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1.
Braz. j. biol ; 84: e250936, 2024. graf
Article in English | LILACS, VETINDEX | ID: biblio-1345557

ABSTRACT

Abstract This study was carried out to evaluate the effect of Glutamine, as a dipeptide or a free amino acid form, on the progression of burn injuries in rats. Thirty male Wistar rats were burned with a comb metal plate heated in boiling water (98 °C) for three minutes, creating four rectangular full-thickness burn areas separated by three unburned interspaces (zone of stasis) in both dorsum sides. The animals were randomized into three groups (n=10): saline solution (G1-Control) and treated groups that orally received Glutamine as dipeptide (G2-Dip) or free amino acid (G3-FreeAA). Two and seven days after burn injury, lesions were photographed for unburned interspaces necrosis evolution assessment. Seven days after injury, glutathione seric was measured and histopathological analysis was performed. By photographs, there was a significant reduction in necrosis progression in G3-Free-AA between days two and seven. Histopathological analysis at day 7 showed a significantly higher stasis zone without necrosis and a higher number of fibroblasts in G2-Dip and G3-FreeAA compared with G1-Control. Also, glutathione serum dosage was higher in G2-Dip. The plasmatic glutathione levels were higher in the G2-Dip than the G1-Control, and there was a trend to higher levels in G3-FreeAA. The reduction in histological lesions, greater production of fibroblasts, and greater amounts of glutathione may have benefited the evolution of burn necrosis, which showed greater preservation of interspaces.


Resumo Este estudo foi realizado para avaliar o efeito da Glutamina, como um dipeptídeo ou forma de aminoácido livre, na progressão de queimaduras em ratos. Trinta ratos Wistar machos foram queimados com um pente de metal aquecido em água fervente (98 °C) por três minutos, criando quatro áreas retangulares queimadas separadas por três interesespaços não queimados (zona de estase) em ambos os lados do dorso. Os animais foram randomizados em três grupos (n = 10): solução salina (G1-Controle) e grupos tratados que receberam glutamina via oral como dipeptídeo (G2-Dip) ou aminoácido livre (G3-FreeAA). Dois e sete dias após a queimadura, as lesões foram fotografadas para avaliação da evolução da necrose entre os espaços não queimados. Sete dias após a lesão, foi dosada a glutationa sérica e realizada análise histopatológica. Pelas fotografias, houve uma redução significativa na progressão da necrose no G3-Free-AA entre os dias dois e sete. A análise histopatológica no dia 7 mostrou uma zona de estase significativamente maior sem necrose e número mais elevado de fibroblastos em G2-Dip e G3-FreeAA em comparação com G1-Controle. Os níveis plasmáticos de glutationa foram maiores no G2-Dip em relação ao G1-Controle, e houve tendência a níveis mais elevados no G3-FreeAA. A redução das lesões histológicas, maior produção de fibroblastos, maior quantidade de glutationa podem ter beneficiado a evolução da necrose da queimadura, que mostrou maior preservação dos interespaços.


Subject(s)
Animals , Male , Rats , Burns/drug therapy , Glutamine , Rats, Wistar , Dipeptides , Disease Models, Animal , Amino Acids
2.
Braz. j. biol ; 83: e249209, 2023.
Article in English | LILACS, VETINDEX | ID: biblio-1339360

ABSTRACT

Abstract Alo vera is a centenary remedy use for minor wounds and burns, but its mechanism of wound healing has not been know since. This article will evaluate and gather evidence of the effectiveness and safety of the use of aloe vera in the treatment of burns. A systematic review was carried out on the databases: MEDLINE, LILACS, DECS, SCIELO, in the last 7 years, with the descriptors: "Aloe", "Burns" and "treatment". 16 articles were found. After using the exclusion criteria; research in non-humans and literature review; 5 articles were selected. The article Teplick et al. (2018) performed an in vitro clinical experiment in A. Vera solution, and demonstrated that there was proliferation and cell migration of human skin fibroblasts and keratinocytes, in addition to being protective in the death of keratonocytes. That is, it accelerates the healing of wounds. Muangman et al. (2016), evaluated 50 patients with 20% of the total body surface area burned with second-degree burns, between 18-60 years old, with half of the group receiving gauze dressings with soft paraffin containing 0.5% chlorhexidine acetate and the other half receiving polyester dressings containing extracts of medicinal plants mainly Aloe Vera. It had positive results, a higher healing speed and shorter hospital stay compared to the control group. Hwang et al. (2015) investigated the antioxidant effects of different extracts from 2,4,6,8,12 months of Aloe Vera. And the 6-month concentrated extract of 0.25 mg / mL had a higher content of flavonoids (9.750 mg catechin equivalent / g extract) and polyphenols (23.375 mg gallic acid equivalent / g extract) and the greater ferric reducing antioxidant power (0.047 mM equivalent ferrous sulfate / mg extract), that is, greater potential for free radical scavenging and also a protective effect against oxidative stress induced by tert-butyl hydroperoxide (t-BHP), suggesting evidence of a bioactive potential of A. vera . However, in the article Kolacz et al. (2014) suggested as an alternative treatment the use of Aloe Vera dressing in combination with honey, lanolin, olive oil, wheat germ oil, marshmallow root, wormwood, comfrey root, white oak bark, lobelia inflata, glycerin vegetable oil, beeswax and myrrh, without obtaining significant and conclusive results that would allow the conventional treatment of burns to be subsidized. Finally, in the article by Zurita and Gallegos (2017), it carried out a descriptive cross-sectional study with 321 people, both sexes between 17-76 years of age, of an inductive nature, exploring the experience of this population and their behavioral attitudes regarding the treatment of dermatoses. Aloe vera had 13.8% cited by individuals in the treatment of acne and 33.6% in the treatment of burns. Even with evidence that suggests the efficacy in the treatment of burns with the use of Aloe Vera extract, further clinical trials with larger sample space on the use of Aloe vera dressings in medium burns are suggested for further conclusions.


Resumo Alo vera é um remédio centenário usado para pequenas feridas e queimaduras, mas seu mecanismo de cicatrização de feridas não foi conhecido desde então. Este artigo avaliará e reunirá evidências da eficácia e segurança do uso de aloe vera no tratamento de queimaduras. Realizada revisão Sistemática nas bases de dados: MEDLINE, LILACS, DECS, SCIELO, nos últimos 7 anos, com os descritores: "Aloe", "Burns" and "treatment". Foram encontrados 16 trabalhos. Após utilizarmos os critérios de exclusão; pesquisa em nao humanos e revisão da literatura ; foram selecionados 5 artigos. O artigo Teplick et al. (2018) realizou um experimento clinico in vitro em solução de A. Vera, e demonstrou que houve proliferação e migração celular de fibroblastos e queratinócitos de pele humana, além de ser protetor na morte de queratonócitos. Ou seja, acelera a cicatrização das feridas. Já Muangman et al. (2016), avaliou 50 pacientes com 20% do total da área superficial corporal queimada com queimaduras de segundo grau, entre 18-60 anos, tendo metade do grupo como controle recebendo curativos de gaze com parafina mole contendo 0,5% acetado de clorexidina e a outra metade recebendo curativos com poliéster contendo extratos de plantas medicinais principalmente Aloe Vera. Teve resultados positivos, uma maior velocidade de cicatrização e menor tempo de internação comparado ao grupo controle. Já Hwang et al. (2015) investigou os efeitos antioxidante de diferentes extratos de 2,4,6,8,12 meses da Aloe Vera. E o extrato com 6 meses concentrado de 0,25 mg/mL teve maior teor de flavanóides (9,750 mg equivalente catequina / g extrato) e polifenóis (23,375 mg equivalente ácido gálico / g extrato) e o maior poder antioxidante redutor férrico (0,047 mM de sulfato ferroso equivalente / extrato mg), ou seja, maior potencial de eliminação de radicais livres e também efeito proteror contra o estresse oxidativo induzido por hidroperóxido de terc-butila (t-BHP), sugerindo indícios de um potencial bioativo da A. vera. Porém, no artigo Kolacz et al. (2014) sugeriu como tratamento alternativo o uso do curativo com Aloe Vera em conjunto de mel, lanolina, azeite de oliva, óleo de gérmen de trigo, raiz de marshmallow, absinto, raiz de confrei, casca de carvalho branco, lobelia inflata, glicerina vegetal, cera de abelha e mirra, não obtendo resultados significativos e conclusivos que permitam subsidiar o tratamento convencional das queimaduras. Por fim, no artigo de Zurita and Gallegos (2017), realizou um estudo descritivo transversal com 321 pessoas, ambos os sexos entre 17-76 anos, de natureza indutiva, explorando a vivência dessa população e suas atitudes comportamentais quanto ao tratamento de dermatoses. Aloe vera teve 13,8% citada pelos indivíduos no tratamento de acne e 33,6% no tratamento de queimaduras. Mesmo tendo evidências que sugerem a eficácia no tratamento de queimaduras com o uso do extrato da Aloe Vera, sugere-se mais ensaios clínicos com espaço amostral maior sobre o uso de curativos de Aloe vera em médio queimados para maiores conclusões.


Subject(s)
Humans , Plants, Medicinal , Burns/drug therapy , Aloe , Wound Healing , Plant Extracts/therapeutic use , Plant Extracts/pharmacology , Cross-Sectional Studies
3.
Chinese Journal of Burns ; (6): 640-649, 2022.
Article in Chinese | WPRIM | ID: wpr-940970

ABSTRACT

Objective: To investigate the effects of methacrylic anhydride gelatin (GelMA) hydrogel loaded with silver and recombinant human basic fibroblast growth factor (rh-bFGF) on deep partial-thickness burn wounds in rabbits. Methods: The experimental research method was adopted. Low-concentration GelMA materials, medium-concentration GelMA materials and high-concentration GelMA materials containing different concentrations of methacrylic anhydride (MA) were prepared, after adding photoinitiator, low-concentration GelMA hydrogels, medium-concentration GelMA hydrogels, and high-concentration GelMA hydrogels were obtained, respectively. The nuclear magnetic resonance spectroscopy was performed to detect the hydrogen nuclear magnetic resonance spectra of the above-mentioned three concentrations of GelMA materials, and to calculate the degree of substitution according to the spectrum diagram. The three-dimensional microstructure and pore size of 3 types of above-mentioned GelMA hydrogels were detected by field emission scanning electron microscopy (FESEM), with 9 samples measured. According to the selected concentration of MA, ten kinds of solutions of GelMA with different concentration of silver (silver-containing GelMA) were synthesized, and the silver-containing GelMA solution of each concentration was divided into three parts, and then exposed to ultraviolet light lasting for 20, 25, and 35 s, respectively. After adding photoinitiator,the corresponding silver-containing GelMA hydrogels were obtained. The residual degradation rate of silver-containing GelMA hydrogel with different photocrosslinking times was detected by collagenase degradation method at degradation of 12, 24, 36, and 48 h; and the time required for complete degradation was detected, and the sample number was 5. The inhibition zone diameter of GelMA hydrogel under above screened photocrosslinking times containing 10 concentrations of silver against Staphylococcus aureus was measured to reflect its antibacterial ability, and the sample numbers were all 5. The silver-containing GelMA hydrogel with statistical significance compared with the antibacterial circle diameter of the silver-containing GelMA hydrogel containing the lowest concentration (no silver) was considered as having antibacterial activity. The three-dimensional microstructure and pore size of the silver-containing GelMA hydrogels with antibacterial activity and the lowest drug concentration selected were detected by FESEM, and the sample numbers were all 9. The freeze-dried alone GelMA hydrogel and the freeze-dried silver-containing GelMA hydrogel were soaked in phosphate buffer solution for 24 h, respectively, then the swelling rate of the two GelMA hydrogel were calculated and compared by weighing method, and the sample number was 5. GelMA hydrogel containing silver and rh-bFGF, namely compound hydrogel for short, was prepared according to the preliminary experiment and the above experimental results. The appearance of the composite hydrogel was observed in general, and its three-dimensional microstructure and pore size were detected by FESEM. The deep partial-thickness burn wound was made on the back of 30 rabbits (aged 4-6 months, female half and half). Meanwhile, with the rabbit head as the benchmark, the wounds on the left side of the spine were treated as composite hydrogel treatment group, and the wounds on the right side were treated as gauze control group, and which were treated accordingly. On post injury day (PID) 3, 7, 14, 21, and 28, the healing of wounds in the two groups was observed. On PID 7, 14, 21, and 28, the wound healing area was recorded and the healing rate was calculated, with a sample number of 30. Data were statistically analyzed with analysis of variance for repeated measurement, one-way analysis of variance, and independent sample t test. Results: The substitution degree among low-concentration GelMA materials, medium-concentration GelMA materials, and high-concentration GelMA materials was significantly different (F=1 628.00, P<0.01). The low-concentration GelMA hydrogel had a loose and irregular three-dimensional spatial network structure with a pore size of (60±17) μm; the medium-concentration GelMA hydrogel had a relatively uniform three-dimensional spatial network and pore size with a pore size of (45±13) μm; the high-concentration GelMA hydrogel had the dense and disordered three-dimensional spatial network with a pore size of (25±15) μm, the pore sizes of 3 types of GelMA hydrogels were significantly differences (F=12.20, P<0.01), and medium concentration of MA was selected for the concentration of subsequent materials. The degradability of silver-containing GelMA hydrogels with different concentrations of the same photocrosslinking time was basically same. The degradation residual rates of silver-containing GelMA hydrogels with 20, 25, and 35 s crosslinking time at 12 h were (74.2±1.7)%, (85.3±0.9)%, and (93.2±1.2)%, respectively; the residual rates of degradation at 24 h were (58.3±2.1)%, (65.2±1.8)%, and (81.4±2.6)%, respectively; the residual rates of degradation at 36 h were (22.4±1.9)%, (45.2±1.7)%, and (68.1±1.4)%, respectively; the residual rates of degradation at 48 h were (8.2±1.7)%, (32.4±1.3)%, and (54.3±2.2)%, respectively, and 20, 25, and 30 s photocrosslinking time required for complete degradation of silver-containing GelMA hydrogels were (50.2±2.4), (62.4±1.4), and (72.2±3.2) h, and the difference was statistically significant (F=182.40, P<0.01), 25 s were selected as the subsequent photocrosslinking time. The antibacterial diameters of 10 types of silver-containing GelMA hydrogels against Staphylococcus aureus from low to high concentrations were (2.6±0.4), (2.5±0.4), (3.2±0.4), (12.1±0.7), (14.8±0.7), (15.1±0.5), (16.2±0.6), (16.7±0.5), (16.7±0.4), and (16.7±0.6) mm, respectively, and which basically showed a concentration-dependent increasing trend, and the overall difference was statistically significant (F=428.70, P<0.01). Compared with the silver-containing GelMA hydrogel with the lowest concentration, the antibacterial circle diameters of other silver-containing GelMA hydrogels with antibacterial ability from low to high concentration were significantly increased (with t values of 26.35, 33.84, 43.65, 42.17, 49.24, 55.74, and 43.72, respectively, P<0.01). The silver-containing GelMA hydrogel with the antibacterial diameter of (12.1±0.7) mm had the lowest antibacterial activity against Staphylococcus aureus and the lowest drug loading concentration, and the concentration of silver was selected for the concentration of subsequent materials. The microscopic morphology of the silver-containing GelMA hydrogel containing silver element with a pore size of (45±13) μm had a regular and linear strip-like structure. After soaking for 24 h, the swelling ratio of silver-containing GelMA hydrogel was similar to that of alone GelMA hydrogel. The composite hydrogel was colorless, clear and transparent, and its three-dimensional microstructure was a regular and uniform grid, with a filament network structure inside, and the pore size of (40±21) μm. On PID 3, a large amount of necrotic tissue and exudate of rabbit wound in composite hydrogel group were observed, and scattered scabs, a small amount of necrotic tissue and exudate of rabbit wound in gauze control group were observed. On PID 7, the area of rabbit wound in composite hydrogel group was significantly reduced, and adhesion of rabbit wound and gauze in gauze control group was observed. On PID 14, In composite hydrogel group, the rabbit wound surface was ruddy, and the growth of granulation tissue was observed, and in gauze control group, the rabbit wound base was pale, and the blood supply was poor. On PID 21, the rabbit wounds in composite hydrogel group healed completely, and rabbit wound in gauze control group had healing trend. On PID 28, new hair could be seen on rabbit wound surface in composite hydrogel group; oval wound of rabbit in gauze control group still remained. On PID 7, 14, 21, and 28, the wound healing areas of rabbit in composite hydrogel group were significantly larger than those in gauze control group (with t values of 2.24, 4.43, 7.67, and 7.69, respectively, P<0.05 or P<0.01). Conclusions: The medium-concentration GelMA hydrogel has good physical and chemical properties in terms of swelling and degradability. The screened silver-containing GelMA hydrogels had the lowest antibacterial activity and the lowest drug loading concentration. Composite hydrogel can significantly shorten the healing time of deep partial-thickness burn wounds in rabbits.


Subject(s)
Anhydrides , Animals , Anti-Bacterial Agents , Burns/drug therapy , Female , Fibroblast Growth Factor 2 , Gelatin/pharmacology , Humans , Hydrogels/pharmacology , Rabbits , Recombinant Proteins , Staphylococcal Infections , Staphylococcus aureus
4.
Chinese Journal of Burns ; (6): 538-548, 2022.
Article in Chinese | WPRIM | ID: wpr-940957

ABSTRACT

Objective: To assess the current situation of early treatment of partial-thickness burn wounds by professional burn medical staff in China, and to further promote the standardized early clinical treatment of partial-thickness burn wounds. Methods: A cross-sectional investigation was conducted. From November 2020 to February 2021, the self-designed questionnaire for the early treatment of partial-thickness burn wounds was published through the "questionnaire star" website and shared through WeChat to conduct a convenient sampling survey of domestic medical staff engaged in burn specialty who met the inclusion criteria. The number, region, and grade of the affiliated hospital, the age, gender, occupation, and seniority of the respondents were recorded. The respondents were divided into physician group and nurse group, senior group and junior group, eastern region group and non-eastern region group, primary and secondary hospital group and tertiary hospital group. Then the seniority, grade of the affiliated hospital, region of the affiliated hospital of the respondents in physician group and nurse group, conventional treatment of partial-thickness burn blisters, reasons for retaining vesicular skin, reasons for removing vesicular skin, and the conventional selection and optimal solution recommendation of topical drugs or dressings for partial-thickness burn wounds in the early stage of respondents in each of all the groups were recorded. Data were statistically analyzed with chi-square test. Results: The survey covered 31 provinces, municipalities, and autonomous regions in China (except for Hong Kong, Macau, and Taiwan regions). A total of 979 questionnaires were recovered, which were all valid. The 979 respondents came from 449 hospitals across the country, including 203 hospitals in the eastern region, 116 hospitals in the western region, 99 hospitals in the central region, and 31 hospitals in the northeast region, 348 tertiary hospitals, 79 secondary hospitals, and 22 primary hospitals. The age of the respondents was (39±10) years. There were 543 males and 436 females, 656 physicians and 323 nurses, 473 juniors and 506 seniors, 460 in the eastern regions and 519 in the non-eastern regions, 818 in tertiary hospitals and 161 in primary and secondary hospitals. There were statistically significant differences in the composition of different seniority in the respondents between physician group and nurse group (χ2=44.32, P<0.01), while there were no statistically significant differences in grade or region of the affiliated hospital of the respondents between physician group and nurse group (P>0.05). There were no statistically significant differences in the conventional treatment of partial-thickness burn blisters among respondents between different occupational groups, seniority groups, and region of the affiliated hospital groups (P>0.05).The respondents in different grade of the affiliated hospital groups differed significantly in the conventional treatment of partial-thickness burn blisters (χ2=6.24, P<0.05). Compared with respondents in nurse group, larger percentage of respondents in physician group chose to retain vesicular skin for protecting the wounds and providing a moist environment, and alleviating the pain of dressing change (with χ2 values of 21.22 and 19.96, respectively, P values below 0.01), and smaller percentage of respondents in physician group chose to retain vesicular skin for prevention of wound infection (χ2=23.55, P<0.01). The reasons for retaining vesicular skin of respondents between physician group and nurse group were similar in accelerating wound healing, alleviating pigmentation and scar hyperplasia post wound healing (P>0.05). Compared with respondents in junior group, larger percentage of respondents in senior group chose to retain vesicular skin for protecting the wounds and providing a moist environment and alleviating the pain of dressing change (with χ2 values of 10.36 and 4.60, respectively, P<0.05 or P<0.01), and smaller percentage of respondents in senior group chose to retain vesicular skin for prevention of wound infection (χ2=8.20, P<0.01). The reasons for retaining vesicular skin of respondents in senior group and junior group were similar in accelerating wound healing, alleviating pigmentation and scar hyperplasia post wound healing (P>0.05). The 5 reasons for the respondents between eastern region group and non-eastern region group, primary and secondary hospital group and tertiary hospital group chose to retain vesicular skin were all similar (P>0.05). Compared with those in physician group, significantly higher percentage of respondents in nurse group were in favor of the following 6 reasons for removing the vesicular skin, including convenience for using more ideal dressings to protect the wounds, prevention of wound infection, facilitating the effect of topical drugs on the wounds, the likely rupture of blisters and wound contamination, accelerating wound healing, and alleviating pigmentation and scar hyperplasia post wound healing (with χ2 values of 4.35, 25.59, 11.83, 16.76, 46.31, and 17.54, respectively, P<0.05 or P<0.01). Compared with respondents in senior group, larger percentage of respondents in junior group chose to remove vesicular skin for the reasons such as the likely blister rupture and wound contamination, preventing wound infection, accelerating wound healing, and alleviating pigmentation and scar hyperplasia post wound healing (with χ2 values of 17.25, 18.63, 14.83, and 10.23, respectively, P values below 0.01). Compared with respondents in non-eastern region group, larger percentage of respondents in eastern region group chose to remove vesicular skin for preventing wound infection and the likely rupture of blisters and wound contamination (with χ2 values of 9.30 and 8.65, respectively, P values below 0.01). The 6 reasons for the respondents between tertiary hospital group and primary and secondary hospital group choose to remove vesicular skin were similar (P>0.05). Compared with respondents in physician group, larger percentage of respondents in nurse group chose to use moisturizing materials for partial-thickness burn wounds in the early stage (χ2=6.18, P<0.05), and smaller percentage of respondents in nurse group chose other topical drugs or dressings (χ2=5.20, P<0.05). Compared with respondents in junior group, larger percentage of respondents in senior group chose to use moisturizing materials and other topical drugs or dressings for partial-thickness burn wounds in the early stage (with χ2 values of 4.97 and 21.80, respectively, P<0.05 or P<0.01). Compared with respondents in non-eastern region group, larger percentage of respondents in eastern region group chose to use topical antimicrobial drugs for partial-thickness burn wounds in the early stage (χ2=4.09, P<0.05), and smaller percentage of respondents in eastern region group chose to use other topical drugs or dressings for the partial-thickness burn wounds in the early stage (χ2=5.63, P<0.05). Compared with respondents in primary and secondary hospital group, larger percentage of respondents in tertiary hospital group chose to use biological dressings for partial-thickness burn wounds in the early stage (χ2=9.38, P<0.01). The optimal solution recommendation of topical drugs or dressings for partial-thickness burn wounds in the early stage varied significantly among the respondents between different occupational groups and seniority groups (with χ2 values of 39.58 and 19.93, respectively, P values below 0.01). There were no statistically significant differences between eastern and non-eastern region groups, tertiary hospital group and primary and secondary hospital groups in optimal solution recommendation of topical drugs or dressings for partial-thickness burn wounds in the early stage (P>0.05). Conclusions: The conventional treatment measures of partial-thickness burn blisters and reasons for preserving blister skin by professional burn medical staff in China are relatively consistent, but there are great differences in the selection of reasons for removing blister skin, the conventional selection and optimal solution recommendation of topical drugs or dressings for partial-thickness burn wounds in the early stage. Therefore, it is urgent to establish a clinical treatment standard for partial-thickness burn wounds.


Subject(s)
Adult , Blister , Burns/drug therapy , Cicatrix/pathology , Cross-Sectional Studies , Female , Humans , Hyperplasia , Male , Medical Staff , Middle Aged , Occupations , Pain , Soft Tissue Injuries , Wound Infection
5.
Chinese Journal of Burns ; (6): 378-384, 2022.
Article in Chinese | WPRIM | ID: wpr-936022

ABSTRACT

With the aging of population and the development of social economy, the incidence of chronic wounds is increasing day by day, while the incidence of burns and trauma remains at a high level, making wound repair an increasingly concerned area in clinical practice. Thymosin β4 is a naturally occurring small molecule protein in vivo, which is widely distributed in a variety of body fluids and cells, especially in platelets. Thymosin β4 has biological activities of promoting angiogenesis, anti-inflammation, anti-apoptosis, and anti-fibrosis, and has many important functions in wound repair. Thymosin β4 has been observed to promote the healing of various wounds, such as burns, diabetic ulcers, pressure ulcers. This paper will review the molecular structure, mechanism of wound healing promotion, pharmacokinetics, and clinical application of thymosin β4, aiming to introduce its potential in wound treatment and the shortcomings of current researches.


Subject(s)
Burns/drug therapy , Humans , Pressure Ulcer , Thymosin/therapeutic use , Wound Healing/physiology
6.
Acta cir. bras ; 36(3): e360303, 2021. tab, graf
Article in English | LILACS, VETINDEX | ID: biblio-1284909

ABSTRACT

ABSTRACT Purpose This study aimed to elaborate a hydrogel constituted by carboxymethyl chitosan (CMC), hyaluronic acid (HA) and silver (Ag) and to evaluate its healing effect on partial-thickness burn wounds experimentally induced in rats. Methods CMC was obtained by chitosan reacting with monochloroacetic acid. The carboxymethylation was confirmed by Fourier-transform infrared spectroscopy and hydrogen nuclear magnetic resonance (NMR). Scanning electron microscopy was used to determine the morphologicalcharacteristics of chitosan and CMC. After the experimental burn wound induction, the animals (n = 126) were treated with different CMC formulations, had their occlusive dressings changed daily and were followed through 7, 14 and 30 days. Morphometric, macroscopic and microscopic aspects and collagen quantification were evaluated. Results Significative wound contraction, granulation tissue formation, inflammatory infiltration and collagen fibers deposit throughout different phases of the healing process were observed in the CMC hydrogels treated groups. Conclusions The results showed that, in the initial phase of the healing process, the most adequate product was the CMC/HA/Ag association, while in the other phases the CMC/HA association was the best one to promote the healing of burn wounds.


Subject(s)
Burns/drug therapy , Chitosan , Wound Healing , Collagen , Hydrogels
7.
Braz. j. med. biol. res ; 54(9): e10700, 2021. tab, graf
Article in English | LILACS | ID: biblio-1249336

ABSTRACT

It was previously demonstrated that the methanol fraction of Sideroxylon obtusifolium (MFSOL) promoted anti-inflammatory and healing activity in excisional wounds. Thus, the present work investigated the healing effects of MFSOL on human keratinocyte cells (HaCaT) and experimental burn model injuries. HaCaT cells were used to study MFSOL's effect on cell migration and proliferation rates. Female Swiss mice were subjected to a second-degree superficial burn protocol and divided into four treatment groups: Vehicle, 1.0% silver sulfadiazine, and 0.5 or 1.0% MFSOL Cream (CrMFSOL). Samples were collected to quantify the inflammatory mediators, and histological analyses were performed after 3, 7, and 14 days. The results showed that MFSOL (50 μg/mL) stimulated HaCaT cells by increasing proliferation and migration rates. Moreover, 0.5% CrMFSOL attenuated myeloperoxidase (MPO) activity and also stimulated the release of interleukin (IL)-1β and IL-10 after 3 days of treatment. CrMFSOL (0.5%) also enhanced wound contraction, promoted improvement of tissue remodeling, and increased collagen production after 7 days and VEGF release after 14 days. Therefore, MFSOL stimulated human keratinocyte (HaCaT) cells and improved wound healing via modulation of inflammatory mediators of burn injuries.


Subject(s)
Humans , Female , Burns/drug therapy , Sapotaceae , Proline , Keratinocytes , Plant Leaves , Methanol
8.
s.l; RedARETS; ene. 2020.
Non-conventional in Spanish | LILACS, BRISA | ID: biblio-1095210

ABSTRACT

INTRODUCCIÓN: Se puede formar tejido cicatricial después de una cirugía, trauma o diversas afecciones inflamatorias. Las cicatrices pueden crear muchas funciones adversas, efectos cosméticos y estructurales, y a veces efectos psicológicos, eso puede afectar la vida diaria de los pacientes (Kerwin et al., 2014). El mecanismo de reparación de cicatrices a nivel molecular no es bien comprendido (Gladstone et al., 2010). BÚSQUEDA: Ensayos randomizados controlados o ensayos no randomizados, meta-análisis y evaluaciones de tecnologías que evalúen el uso de toxina botulínica en el tratamiento de las heridas y/o cicatrices cutáneas. MÉTODOS: De las 3 revisiones sistemáticas con metaanálisis encontradas se seleccionaron dos con alto nivel de confianza de acuerdo con la herramienta AMSTAR-2 que evaluaron Toxina botulínica A frente a placebo. Se evaluó el sesgo de los estudios incluidos y se realizaron perfiles de evidencia utilizando la metodología GRADE con el programa GRADE-PRO GDT teniendo en cuenta los desenlaces seleccionados como criticos o importantes. RESULTADOS: a. Evaluado en postquirúrgico de cirugía reciente, sobre piel previamente sana. b. Heterogeneidad entre estudios I2 27% y p 0,10. c. Evaluado en cocatriz hipertrófica o queloide.


Subject(s)
Humans , Wounds and Injuries/drug therapy , Burns/drug therapy , Botulinum Toxins, Type A/therapeutic use , Technology Assessment, Biomedical , Cost-Benefit Analysis
9.
Rev. bras. queimaduras ; 19(1): 24-29, 2020.
Article in Portuguese | LILACS | ID: biblio-1361378

ABSTRACT

OBJETIVO: Esse estudo tem por objetivo analisar as interações medicamentosas em prescrições de pacientes pediátricos do Centro de Tratamento de Queimados. MÉTODO: Trata-se de um estudo analítico de orientação retrospectiva, com análise das prescrições quanto à segurança e interações medicamentosas. As interações medicamentosas foram classificadas de acordo com a gravidade da interação. Das interações classificadas como contraindicadas, foi analisado o prontuário para avaliar a ocorrência de relato de alteração clínica devido à interação medicamentosa. RESULTADOS: Das 805 prescrições analisadas, 435 (54,04%) continham pelo menos uma interação medicamentosa, apresentando média de quatro interações por prescrição. Foram encontradas 1828 interações com medicamentos, que corresponderam a 84 combinações entre 43 fármacos. A classificação de gravidade encontrada foi: 96 (5,25%) contraindicadas, 1077 (58,92%) importantes, 452 (24,73%) moderadas e 203 (11,11%) secundárias. As interações contraindicadas estavam presentes em prescrições de cinco pacientes. Em apenas um prontuário foi encontrado relato de evento adverso compatível com a interação medicamentosa encontrada. Com relação à avaliação da prescrição, os itens identificação do paciente, instituição e prescritor estavam presentes em mais de 80%. Observou-se média de 9,5 medicamentos por prescrição. CONCLUSÃO: A maioria das prescrições dos pacientes pediátricos internados no centro de tratamento de queimados apresentaram interações medicamentosas. Isso provavelmente ocorreu devido ao grande número de medicamentos prescritos.


OBJECTIVE: This study aims to analyze the drug interactions in prescriptions of pediatric patients from the Center for the Burn Treatment. METHODS: It is an analytical retrospective study that analyzed prescriptions regarding safety and drug interactions. The drug interactions were classified according to interaction severity. From drug interactions classified as contraindicated, the patients chart was evaluated to assess whether there was clinical change due to drug interaction found. RESULTS: Of the 805 prescriptions analyzed, 435 (54.04%) contained at least one drug interaction, presenting an average of four interactions per prescription. One thousand eight hundred twenty-eight drug interactions were found, which corresponded to 84 combinations between 43 drugs. The severity classification was: 96 (5.25%) contraindicated, 1077 (58.92%) important, 452 (24.73%) moderate and 203 (11.11%) secondary. The contraindicated interactions were present in the prescriptions of five patients. Only one chart was found, an adverse event report compatible with the drug interaction found. Regarding the evaluation of the prescription, the items related to identifying the patient, institution and prescriber were present in more than 80%. It was observed an average of 9.54 drugs per prescription. CONCLUSION: Most of the prescriptions for pediatric patients admitted to the burn treatment center presented drug interactions; this probably occurred due to many prescribed drugs.


Subject(s)
Child, Preschool , Child , Adolescent , Drug Prescriptions , Burn Units , Burns/drug therapy , Child Health , Cross-Sectional Studies/instrumentation , Retrospective Studies , Drug Interactions , Observational Study
10.
An. bras. dermatol ; 94(2): 204-210, Mar.-Apr. 2019. tab, graf
Article in English | LILACS | ID: biblio-1001128

ABSTRACT

Abstract This study aims to evaluate tissue healing efficacy in burn patients treated with 1% silver sulfadiazine versus other treatments. This is a systematic literature review and meta-analysis of randomized clinical trials performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyzes (PRISMA) and PICO strategy, registered in the International Prospective Register of Systematic Reviews (PROSPERO) under the number CRD42017081057. The review found 71 studies in MEDLINE/Pubmed, 1 in Clinical Trials, 19 in the Cochrane Library, and 4 in LILACS in five manual searches. Of these, 81 studies were pre-selected. After independent analysis by two reviewers, only 11 studies met the inclusion criteria for the review. All studies (n = 11) using alternative treatments to silver sulfadiazine were shown to be superior in the mean time for complete wound healing, with statistically significant differences between experimental and control groups (p <0.00001); mean difference (- 4.26), 95% CI [- 5.96, - 2.56].


Subject(s)
Humans , Silver Sulfadiazine/therapeutic use , Wound Healing/drug effects , Burns/drug therapy , Anti-Infective Agents, Local/therapeutic use , Silver Sulfadiazine/pharmacology , Time Factors , Randomized Controlled Trials as Topic , Treatment Outcome , Hospitalization , Anti-Infective Agents, Local/pharmacology
11.
São Paulo; s.n; s.n; 2019. graf, tab.
Thesis in Portuguese | LILACS | ID: biblio-1015315

ABSTRACT

O meropenem é um carbapenêmico de amplo espectro e alta potência, largamente prescrito para tratamento de infecções graves causadas por bactérias sensíveis gram-negativas em pacientes críticos internados em Unidades de Terapia Intensiva. O objetivo do presente estudo foi avaliar a efetividade do antimicrobiano em pacientes grandes queimados, recebendo a dose recomendada 1 g q8h através da infusão intermitente de 0,5 hora que ocorreu até 2014 (grupo 1) comparada a infusão estendida de 3 horas que ocorreu após esse período (grupo 2). Investigaram-se 25 pacientes sépticos de ambos os sexos (6F/19M), 26 (21-34) anos, medianas (interquartil), 70 (60-75) kg, superfície corporal total queimada (SCTQ) 35 (16-42)%, SAPS 3: 55 (45-59) e Clcr 129 (95-152) ml/min que foram distribuídos em dois grupos. Registrou-se trauma térmico pelo fogo em 19/25 e trauma elétrico no restante dos pacientes (6/25), lesão inalatória (17/25), intubação orotraqueal e a necessidade de vasopressores em 18/25 pacientes. Duas amostras de sangue foram coletadas (3ª e 5ª horas) para dosagem sérica do meropenem por cromatografia líquida no período precoce do choque séptico. A farmacocinética foi investigada pela aplicação do modelo aberto de um compartimento e a abordagem PK/PD foi realizada com base no novo índice recomendado 100%fΔT>CIM. Evidenciou-se aumento do PCR 224 (179-286) versus 300 (264-339) mg/L, p=0,0411 e neutrofilia: 12 (8-17) versus 8 (2-15) células/mm3, p=0,1404, respectivamente nos grupos de infusão estendida versus infusão intermitente. Os níveis séricos obtidos mostraram diferença significativa entre grupos (p<0,0001) tanto para o pico 21 (21-22) mg/L versus 44 (42-45) mg/L, como para o vale 7,8 (7,3-9,5) mg/L versus 3,0 (2,6-3,7) mg/L. A farmacocinética mostrou-se alterada nos dois grupos frente aos dados de referência reportados em voluntários sadios. Significativa alteração ocorreu em diferentes proporções pela comparação entre os grupos relativamente à constante de eliminação 0,190 (0,157-0,211) versus 0,349 (0,334-0,382) h-1; meia-vida biológica 3,6 (3,3-4,4) versus 2,0 (1,8-2,1) h; depuração total corporal 8,6 (8,2-8,9) versus 5,3 (5,2-5,4) L/h; volume de distribuição 41,8 (39,9-44,5) versus 15,4 (14,1-16,2) L (p<0,0001). A infecção de ferida foi a mais prevalente nos dois grupos com 47% versus 38% dos isolados, sendo a Klebsiella pneumoniae, a principal enterobactéria. A abordagem PK/PD para patógenos CIM 1 a 4 mg/L mostrou cobertura até CIM 4 mg/L para a infusão estendida e até CIM 2 mg/L para infusão intermitente. Em conclusão, demonstrou-se a superioridade da infusão estendida decorrente de alterações na farmacocinética do meropenem em pacientes grandes queimados. O aumento do volume de distribuição contribuiu para o prolongamento da meia-vida e dos altos níveis de vale registrados, o justifica o impacto na cobertura antimicrobiana após infusão estendida e controle das infecções com cura desses pacientes


Meropenem is a broad-spectrum agent widely prescribed for the treatment of septic shock caused by gram-negative susceptible strains in critically ill patients from the Intensive Care Units. Subject of the present study was to evaluate the drug effectiveness in critically ill septic burn patients in SIRS at the early period of septic shock receiving the recommended dose of Meropenem 1 g q8h by intermittent 0.5 hour infusion or the extended 3 hour infusion. Twenty-five septic patients were: (6F/19M), 26 (21-34) years, medians (quartiles), 70 (60-75) kg, total burn body surface (SCTQ) 35 (16-42) %, SAPS 3: 55 (45-59) and Clcr 129 (95-152) ml/min. Thermal trauma was registered in 19/25 and electrical trauma in the remaining patients (6/25), inhalation injury (17/25), orotracheal intubation and vasopressor requirement in 18/25 patients. Patients were distributed in two groups on the basis of the duration of drug infusion that occurred for the patients of group 1 (1g q8h 0.5 hr) until 2014, December in the hospital. In addition, the extended 3 hours infusion occurred after that period for patients enrolled afterwards (group 2). Pharmacokinetics was investigated after blood sampling at the third (3rd) hour and the fifth (5th) hour of starting the meropenem infusion. Serum drug measurement was done by liquid chromatography. A one compartment open model was applied and kinetic parameters were estimated. PK/PD approach based on the new recommended index of drug effectiveness 100% fΔT>MIC was performed, on the basis on PK parameters and the minimum inhibitory concentration, PD parameter. It was demonstrated a significant difference between groups (p <0.0001) related to the trough levels 7.8 (7.3-9.5) mg/L versus 3.0 (2.6-3.7) mg/L, respectively after extended infusion or intermittent infusion. Concerning the pharmacokinetics, it was shown profound changes on meropenem kinetic parameters in both groups of burn patients by comparison with the reference data reported in healthy volunteers. In addition, it is important to highlight that significant changes occurred also by comparison of PK data between groups of patients related to the parameters: elimination constant 0.190 (0.157-0.211) versus 0.349 (0.334-0.382) h-1; biological half-life 3.6 (3.3-4.4) versus 2.0 (1.8-2.1) hr; total body clearance 8.6 (8.2-8.9) versus 5.3 (5.2-5.4) L/hr; volume of distribution 41.8 (39.9-44.5) versus 15.4 (14.1-16.2) L. Concerning the inflammatory biomarker an increase of C-reactive protein was registered in both groups of septic patients in SIRS: 224 versus 300 mg/L, p = 0.0411, after the extended infusion versus intermittent infusion, respectively. Wound and bone were the most prevalent sites of infection in those patients of both groups. It was shown in the isolates the prevalence of Gram-negative strains 54/83 (65%) that were distributed in Enterobacteriaceae, K. pneumoniae 7/30 (23%), and Non-Enterobacteriaceae, P. aeruginosa 13/54 (24%) followed by Acinetobacter baumannii 11/54 (20%). Drug effectiveness against susceptible strains was demonstrated by PK/PD approach up to 4 mg/L over 2 mg/L, after the extended infusion or after intermittent infusion, respectively. In conclusion, the superiority of the extended infusion in septic burn patients at the earlier period of septic shock was demonstrated, once considerable increases on volume of distribution impacted the drug effectiveness of these patients. Cure was obtained by meropenem monotherapy in 22/25 patients; only three patients (3/25) received meropenem - colistine combined therapy due to Acinetobacter baumannii isolated


Subject(s)
Humans , Male , Female , Adult , Shock, Septic/classification , Wounds and Injuries/drug therapy , Burns/drug therapy , Meropenem/analysis , Pharmacokinetics , Pharmacologic Actions
12.
Rev. bras. queimaduras ; 17(2): 1-9, maio. ago. 2018.
Article in Portuguese | LILACS | ID: biblio-1007855

ABSTRACT

A dor e o sofrimento estão associados com queimaduras, trazem efeitos fisiológicos e emocionais adversos, principalmente em crianças. O controle adequado da dor é um fator importante na melhora dos resultados clínicos. Este estudo tem como objetivo identificar na literatura os princípios ativos mais utilizados para a analgesia em crianças vítimas de queimaduras. Foi realizada uma revisão com um período de busca entre 2008 e 2018, consultando as bases de dados LILACS, Scielo e Medline/PubMed. Duzentas e vinte e cinco publicações foram encontradas e, após a aplicação dos critérios de inclusão e exclusão, 12 artigos relatavam os princípios ativos medicamentosos utilizados para analgesia em crianças queimadas. Os medicamentos mais encontrados foram paracetamol, morfina, ketamina, propofol, AINEs e fentanil. Os profissionais de saúde precisam reconhecer o significado da dor relacionada às crianças queimadas e estar atualizados sobre as várias opções farmacológicas disponíveis. Assim, ter aprofundamento sobre dosagem e via de administração, bem como o conhecimento com queimaduras pediátricas, pode romper barreiras para beneficiar o paciente com o início precoce da administração de analgésicos.


Pain and suffering are associated with burns, they bring adverse physiological and emotional effects mainly on children. Adequate pain control is an important factor in improving clinical outcomes. This study aims to identify in the literature the active principles most used for analgesia in children victims of burns. A review was conducted with a search period between 2008 and 2018, consulting the LILACS, Scielo and Medline / PubMed databases. Two hundred and twenty five publications were found and, after the application of the inclusion and exclusion criteria, 12 articles reported the active drug principles used for analgesia in burned children. The most commonly found drugs were paracetamol, morphine, ketamine, propofol, NSAIDs and fentanyl. Health professionals need to recognize the meaning of pain related to burned children and be up to date on the various pharmacological options available. Thus, having in-depth dosing and route of administration as well as knowledge with pediatric burns can break down barriers to benefit the patient with the early onset of analgesic administration.


El dolor y el sufrimiento están asociados con quemaduras, traen efectos fisiológicos y emocionales adversos principalmente en los niños. El control adecuado del dolor es un factor importante en la mejora de los resultados clínicos. Este estudio tiene como objetivo identificar en la literatura los principios activos más utilizados para la analgesia en niños víctimas de quemaduras. Se realizó una revisión con un período de búsqueda entre 2008 y 2018, consultando las bases de datos LILACS, Scielo y Medline / PubMed. Se encontraron doscientas veinticinco publicaciones y, después de la aplicación de los criterios de inclusión y exclusión, 12 artículos relataban los principios activos medicamentosos utilizados para la analgesia en niños quemados. Los medicamentos más encontrados fueron paracetamol, morfina, ketamina, propofol, AINES y fentanil. Los profesionales de la salud deben reconocer el significado del dolor relacionado con los niños quemados y estar al día sobre las diversas opciones farmacológicas disponibles. Así, tener profundización sobre dosificación y vía de administración, así como el conocimiento con quemaduras pediátricas pueden romper barreras para beneficiar al paciente con el inicio precoz de la administración de analgésicos.


Subject(s)
Humans , Child, Preschool , Pain/drug therapy , Burns/drug therapy , Pain Management/methods , Analgesics, Opioid/therapeutic use
13.
Acta cir. bras ; 33(8): 703-712, Aug. 2018. tab, graf
Article in English | LILACS | ID: biblio-949375

ABSTRACT

Abstract Purpose: To assess the action of vitamin C on the expression of 84 oxidative stress related-genes in cultured skin fibroblasts from burn patients. Methods: Skin samples were obtained from ten burn patients. Human primary fibroblasts were isolated and cultured to be distributed into 2 groups: TF (n = 10, fibroblasts treated with vitamin C) and UF (n = 10, untreated fibroblasts). Gene expression analysis using quantitative polymerase chain reaction array was performed for comparisons between groups. Results: The comparison revealed 10 upregulated genes as follows: arachidonate 12-lipoxygenase (ALOX12), 24-dehydrocholesterol reductase (DHCR24), dual oxidase 1 (DUOX1), glutathione peroxidase 2 (GPX2), glutathione peroxidase 5 (GPX5), microsomal glutathione S-transferase 3 (MGST3), peroxiredoxin 4 (PRDX4), phosphatidylinositol-3,4,5-trisphosphate dependent Rac exchange factor 1 (P-REX1), prostaglandin-endoperoxide synthase 1 (PTGS1), and ring finger protein 7 (RNF7). Conclusion: Cultured fibroblasts obtained from burn patients and treated with vitamin C resulted in 10 differentially expressed genes, all overexpressed, with DUOX1, GPX5, GPX2 and PTGS1 being of most interest.


Subject(s)
Humans , Male , Female , Adult , Young Adult , Ascorbic Acid/pharmacology , Burns/pathology , Gene Expression/drug effects , Oxidative Stress/drug effects , Fibroblasts/drug effects , Fibroblasts/pathology , Reference Values , Skin/pathology , Arachidonate 12-Lipoxygenase/analysis , Arachidonate 12-Lipoxygenase/drug effects , Burns/drug therapy , Cells, Cultured , Cross-Sectional Studies , Statistics, Nonparametric , Ubiquitin-Protein Ligases/analysis , Oxidoreductases Acting on CH-CH Group Donors/analysis , Cyclooxygenase 1/analysis , Cyclooxygenase 1/drug effects , Peroxiredoxins/analysis , Real-Time Polymerase Chain Reaction , Dual Oxidases/analysis , Dual Oxidases/drug effects , Glutathione Peroxidase/analysis , Glutathione Peroxidase/drug effects
14.
Medicentro (Villa Clara) ; 21(3): 253-256, jul.-set. 2017.
Article in Spanish | LILACS | ID: biblio-894388

ABSTRACT

Se presenta a un paciente de 31 años, piel blanca, con antecedentes de salud, que sufrió quemadura dérmica profunda del 3 % de su superficie corporal en la región infraumbilical. Al cuarto día de tratamiento con sulfadiazina argéntica, presentó signos de sepsis local, por lo cual se le realizó toma de secreciones para cultivo por método de hisopado y se le aplicó antibioticoterapia local con nitrofurazona en crema. Tres días más tarde se confirmó el diagnóstico de sepsis, se aisló Cronobacter sakazakii, resistente a sulfametoxazol y al cloranfenicol; al no lograrse el control de la infección, se sustituyó el tratamiento anterior por dermofural en ungüento, con lo que desaparecieron los signos clínicos y el cultivo microbiológico resultó negativo a las 72 horas de evolución. El tratamiento se mantuvo hasta la completa cicatrización. No se informaron efectos adversos durante la terapia.


Subject(s)
Anti-Bacterial Agents/therapeutic use , Burns/drug therapy
15.
Rev. bras. queimaduras ; 16(1): 53-57, jan.-mar. 2017. ilus
Article in Portuguese | LILACS | ID: biblio-915069

ABSTRACT

OBJETIVO: Este artigo tem por objetivo relatar as possíveis vantagens de curativos na forma de lâminas impregnadas com prata iônica (Atrauman®, Mepilex border Ag®, Mepilex-Ag® e Silvercel não aderente®) como agentes tópicos substitutos do creme de sulfadiazina de prata 1% nas queimaduras profundas. RELATO DOS CASOS: Foram tratados 31 pacientes. O Atrauman-Ag® foi empregado em 15 pacientes, o Mepilex border Ag® em três, Mepilex-Ag® em quatro e o Silvercel não aderente® em nove pacientes. Do total, relatamos a utilização destes novos curativos em dois pacientes do estudo com diagnóstico inicial de queimadura profunda. Em nenhum caso foram observados sinais de infecção nas feridas, apesar das trocas de curativos terem sido realizadas entre 4 a 7 dias, mesmo nas queimaduras de espessura total. O conforto propiciado por estes curativos foi evidente, minimizando o estresse e dor e as feridas de espessura parcial se apresentaram com sinais evidentes de rápida epitelização. CONCLUSÃO: Neste estudo preliminar, notamos que todos pacientes se beneficiaram de modo significativo do uso de curativos modernos com lâminas impregnadas por prata iônica quando comparados ao curativo convencional de sulfadiazina. Além da proteção contra infecção, mesmo nas queimaduras de espessura total, eles oferecem a enorme vantagem de as trocas serem espaçadas entre 4 a 7 dias, quando comparados à sulfadiazina, que exige a troca diária dos curativos, minimizando dor e desconforto aos pacientes e também o estresse da equipe de saúde envolvida nos Centros de Tratamento de Queimados.(AU)


OBJECTIVES: This article aims to evaluate the efficacy, and possible advantages of dressings in the form of ionic silver impregnated sheets (Atrauman Ag®, Mepilex Border Ag®, Mepilex - Ag® and Silvercel non - adherent®) as a local substitute agents for the cream of silver sulfadiazine-1% on deep burns. CASE REPORTS: 31 patients were treated. Atrauman-Ag® was used in 15 patients, Mepilex Border Ag® in three, Mepilex-Ag® in four and Silvercel non-adherent® in nine patients. Of the total, we report the use of these new dressings in two patients. In no case were signs of wound infection, even though dressing changes were performed between 4 and 7 days, also in total thickness burns. The comfort provided by these dressings was evident, minimizing stress and pain and partial thickness wounds presented with clear signs of rapid epithelization. CONCLUSION: In this preliminary study, we noticed that all patients benefited significantly from the use of new dressings with ionic silver impregnated sheets when compared to the conventional dressing of sulfadiazine cream. In addition to protection against infection, even in full-thickness burns, they offer the significant advantage that the changes of dressings are spaced between 4 and 7 days. Compared to sulfadiazine, which requires the daily exchange of dressings, they minimize pain and discomfort to patients, and also the stress to the health team involved in the treatment of the Burn Treatment Centers.(AU)


Objetivos: Este artículo tiene como objetivo evaluar la eficacia preliminar y los beneficios potenciales de la curación en forma de láminas impregnadas con plata iónica (Atrauman®, Mepilex Border Ag®, Mepilex-Ag® y Silvercel no aderente®) como sustitutos de crema de sulfadiazina de plata al 1% en quemaduras profundas. Casos Clínicos: Se han tratado 31 pacientes. El Atrauman-Ag® se utilizó en 15 pacientes, Mepilex Border Ag® en tres, Mepilex Ag® en cuatro y Silvercel no adherente® en nueve pacientes. Del total, se presenta la utilización de estos nuevos apósitos en dos pacientes. En ningún caso se observaron signos de infección en las heridas, a pesar de los cambios de apósito se llevaron a cabo entre los 4 y 7 días, incluso en quemaduras de espesor total. La comodidad ofrecida por éstos curación era evidente, lo que minimiza el estrés y el dolor y las heridas de espesor parcial se presentan con signos claros de una rápida epitelización. Conclusión: En este estudio preliminar, se observó que todos los pacientes se beneficiaron significativamente del uso de apósitos impregnados con plata iónica en comparación con sulfadiazina. Además de la protección contra la infección, incluso en quemaduras de espesor total, ofrecen la gran ventaja de las cambios están separadas de 4 a 7 días en comparación con sulfadiazina, que requiere el cambio diario de vendajes, minimizando dolor y malestar a los pacientes, e también el estrés del personal de salud de los centros de tratamiento de Queimados.(AU)


Subject(s)
Humans , Silver/therapeutic use , Wound Healing/drug effects , Burns/drug therapy , Occlusive Dressings , Silver Sulfadiazine/therapeutic use , Burn Units , Administration, Topical
16.
Rev. bras. queimaduras ; 16(1): 49-52, jan.-mar. 2017. ilus
Article in Portuguese | LILACS | ID: biblio-915063

ABSTRACT

OBJETIVO: Testar o uso tópico diário e prolongado na cicatrização de queimaduras em idoso, observando-se os parâmetros: tempo de cicatrização, presença ou ausência de cicatrizes hipertróficas e o efeito estético final resultante do tratamento. RELATO DE CASO: Trata-se de um relato de caso realizado em clínicaescola de uma Faculdade de Enfermagem do interior paulista. O estudo descreve o tratamento empregado em lesão por queimadura de segundo grau em uma paciente de 64 anos, que sofreu queimadura de espessura parcial por escaldadura. Foi realizado registro fotográfico e a avaliação da ferida. Inicialmente, a paciente recebeu o tratamento convencional com sulfadiazina de prata 1% durante sete dias. Como não houve resolução, iniciou-se o tratamento com ácido hialurônico (AH) 0,2% diariamente. Com 14 dias de tratamento, observou-se completa reepitelização. Após 27 dias do início do tratamento, a cicatriz apresentou-se com melhora de hiperpigmentação e não havia sinais de hipertrofia. Não foram observados eventos adversos locais ou sistêmicos durante o período de estudo da lesão. CONCLUSÃO: Os dados permitem concluir que a aplicação tópica de AH 0,2% em queimaduras de paciente idoso contribuiu para acelerar a cicatrização, melhorou a evolução do tratamento e o resultado estético.


OBJECTIVE: To test daily and prolonged topical use in the healing of burns in the elderly, considering the parameters: time of healing, presence or absence of hypertrophic scars and the final aesthetic effect resulting from the treatment. CASE REPORT: This is a case report carried out in the clinical school of a School of Nursing at São Paulo state. The study describes the treatment used in second-degree burn injury in a 64-year-old patient who suffered partial thickness burn by scald. Photographic recording and wound evaluation were performed. Initially, the patient received conventional treatment with 1% silver sulfadiazine for seven days. As there was no resolution, treatment with 0.2% hyaluronic acid (HA) was started daily. At 14 days of treatment, complete re-epithelization was observed. After 27 days, the scar presented with improvement of hyperpigmentation and there were no signs of hypertrophy. No local or systemic adverse events were observed during the study period of the lesion. CONCLUSION: The data allow us to conclude that the topical application of AH 0.2% in burns of elderly patients contributed to accelerate healing, improved treatment evolution and aesthetic result.


Subject(s)
Humans , Middle Aged , Wound Healing/drug effects , Burns/drug therapy , Hyaluronic Acid/therapeutic use , Silver Sulfadiazine/therapeutic use , Administration, Topical
17.
Rev. Assoc. Med. Bras. (1992) ; 63(1): 29-34, Jan. 2017. tab, graf
Article in English | LILACS | ID: biblio-842517

ABSTRACT

Summary Objective: To analyze morphological characteristics and organization of the collagen fibers of third degree burns from scalding compared to laser therapy and silver sulfadiazine, the latter considered as the gold standard. Method: Were selected 12 animals (Rattus norvegicus) also divided into three groups (control group [CG] - untreated burns; sulfadiazine group [SG] - burns were treated with silver sulfadiazine at 1%; laser group [LG] - burns were treated with photobiomodulation). The scald burns were carried out by using PVC mold, and the material collected on the 14th day after burn was prepared for morphological and optical retardation analysis for evaluation of inflammatory infiltrates and collagen organization, respectively. Results: On the 14th day, the laser and sulfadiazine groups had mild inflammatory response, while the control group showed an intense inflammatory process, with statistical significance between laser and control groups, but not between sulfadiazine and control groups. Laser and sulfadiazine groups no longer had granulation tissue, opposite to what was seen in the control group. The presence of hair follicles and ulcer did not significantly differ between groups. The optical retardation of collagen fibers was higher in sulfadiazine group, followed by laser and control groups. As for systemic effect, we were able to identify it by simply analyzing the presence or absence of granulation tissue. Conclusion: Morphologically, the laser or silver sulfadiazine treatments were similar and both provided better organization of collagen fibers in relation to the untreated group. However, the sulfadiazine group modulated the deposition of collagen fibers more efficiently than the laser group.


Resumo Objetivo: Analisar características morfológicas e organização das fibras colágenas de queimaduras de terceiro grau provocadas por escaldo em relação à terapia com laser e àquela considerada padrão-ouro, a sulfadiazina de prata. Método: Foram selecionados 12 animais (Rattus norvegicus), divididos igualmente em três grupos (grupo controle [GC] - queimaduras não tratadas; grupo sulfadiazina [GS] - queimaduras tratadas com sulfadiazina de prata 1%; grupo laser [GL] - queimaduras tratadas com fotobiomodulação). As queimaduras foram realizadas por escaldo com a utilização de molde de PVC, e o material coletado no 14º dia pós-queimadura foi preparado para análise morfológica e de retardo óptico, para avaliação do infiltrado inflamatório e da organização do colágeno, respectivamente. Resultados: No 14º dia, os grupos laser e sulfadiazina apresentaram resposta inflamatória leve, enquanto o grupo controle apresentou processo inflamatório intenso, havendo significância estatística entre os grupos laser e controle, mas não entre os grupos sulfadiazina e controle. Enquanto os grupos laser e sulfadiazina não apresentavam mais tecido de granulação, o grupo controle ainda apresentava. A presença de folículo piloso e de úlcera não diferiu significantemente entre os grupos. O retardo óptico das fibras colágenas foi maior no grupo sulfadiazina, seguido dos grupos laser e controle. Apenas a análise da presença ou ausência de tecido de granulação permitiu identificar o efeito sistêmico. Conclusão: Morfologicamente, os tratamentos com laser ou sulfadiazina de prata foram similares e ambos proporcionaram maior organização das fibras colágenas em relação ao grupo não tratado. Entretanto, o grupo sulfadiazina modulou a deposição das fibras colágenas mais eficientemente que o grupo laser.


Subject(s)
Animals , Female , Rats , Silver Sulfadiazine/administration & dosage , Burns/drug therapy , Burns/radiotherapy , Low-Level Light Therapy/methods , Time Factors , Wound Healing/physiology , Burns/pathology , Collagen/drug effects , Collagen/radiation effects , Disease Models, Animal
18.
Rev. Esc. Enferm. USP ; 50(3): 522-528, June 2016. graf
Article in English | LILACS, BDENF | ID: lil-792786

ABSTRACT

Abstract OBJECTIVE To evaluate the effectiveness of hyaluronic acid in the healing of partial thickness burns. METHOD Systematic review of randomized controlled trials on the use of hyaluronic acid for the topical treatment of skin burns, based on recommendations of the Cochrane Handbook for Systematic Reviews of Interventions. RESULTS Two randomized controlled trials that analyzed 143 patients with partial thickness burns and/or deep partial thickness burns were selected. They compared the application of hyaluronic acid 0.2% associated to silver sulfadiazine 1% 5g/cm2 versus silver sulfadiazine 1% 5g/cm2 alone for the outcome of complete healing. CONCLUSION This review emphasizes the need for new well-designed randomized controlled trials to establish the therapeutic relevance of hyaluronic acid with respect to the healing of burns of partial thickness or deep partial thickness.


Resumen OBJETIVO Evaluar la efectividad del ácido hialurónico en la cicatrización de quemaduras de espesor parcial. MÉTODO Revisión sistemática de ensayos clínicos randomizados acerca de la utilización de ácido hialurónico en el tratamiento tópico de quemaduras de piel, basada en las recomendaciones del Cochrane Handbook for Systematic Reviews of Interventions. RESULTADOS Fueron recuperados de los ensayos clínicos randomizados que analizaron 143 pacientes portadores de quemaduras de espesor parcial y/o espesor parcial profundo, comparando la aplicación de Ácido Hialurónico al 0,2%, asociado con la Sulfadiazina de Plata al 1% 5g/cm2, versus Sulfadiazina de Plata al 1% 5g/cm2 aislada, para el resultado de una cicatrización completa. CONCLUSIÓN Esta revisión subraya la necesidad de nuevos ensayos clínicos randomizados bien planteados para el establecimiento de la relevancia terapéutica del ácido hialurónico en lo que se refiere a la cicatrización de quemaduras de espesor parcial o espesor parcial profundo.


Resumo OBJETIVO Avaliar a efetividade do ácido hialurônico na cicatrização de queimaduras de espessura parcial. MÉTODO Revisão sistemática de ensaios clínicos randomizados sobre a utilização de ácido hialurônico no tratamento tópico de queimaduras de pele, baseada nas recomendações do Cochrane Handbook for Systematic Reviews of Interventions. RESULTADOS Foram recuperados dois ensaios clínicos randomizados que analisaram 143 pacientes portadores de queimaduras de espessura parcial e/ou espessura parcial profunda, comparando a aplicação de Ácido Hialurônico 0,2% associado à Sulfadiazina de Prata 1% 5g/cm2, versus Sulfadiazina de Prata 1% 5g/cm2 isolada, para o desfecho cicatrização completa. CONCLUSÃO Esta revisão enfatiza a necessidade de novos ensaios clínicos randomizados bem delineados para estabelecimento da relevância terapêutica do ácido hialurônico no que tange à cicatrização de queimaduras de espessura parcial ou espessura parcial profunda.


Subject(s)
Humans , Burns/drug therapy , Hyaluronic Acid/therapeutic use , Wound Healing , Randomized Controlled Trials as Topic , Treatment Outcome
19.
Int. j. morphol ; 34(1): 385-395, Mar. 2016.
Article in Spanish | LILACS | ID: lil-780522

ABSTRACT

Los beneficios de la miel de abeja (Apis mellifera) se conocen desde hace miles de años y ha sido utilizada en la antigüedad por su valor nutritivo y medicinal siendo "redescubierta" por la medicina moderna debido a sus importantes propiedades anti-bacterianas en heridas infectadas. Nuevos estudios han argumentado a favor de la capacidad de la miel para interactuar con la compleja maquinaria celular y llevar a cabo la reparación de los tejidos. Por este motivo, se realizó una revisión de los contenidos actuales de las propiedades de la miel y su rol en los procesos morfofisiológicos de reparación de heridas. De esta manera se abarcó la acción anti-bacteriana, anti-oxidante y anti-inflamatoria de sus componentes. Así mismo, se revisaron las propiedades físicas y de desbridamiento, la importancia del origen floral y ubicación geográfica en el valor medicinal de los diferentes tipos de miel. Los estudios sugieren que los efectos de la miel son el resultado de una actividad combinada, donde sus componentes interactúan de manera sinérgica para lograr su función terapéutica. Su acción la realiza en todas las etapas del proceso morfofisiológico de reparación logrando acelerar la cicatrización de heridas. El origen florar y ubicación geográfica de la miel son factores importantes a considerar, ya que ésta varía en su composición y, por lo tanto, también su valor medicinal.


The benefits of honey bee honey (Apis mellifera) have been known for thousands of years and it has been used since ancient times for its nutritional and medicinal values. It was "rediscovered" by modern medicine as a result of its important anti-bacterial properties in infected wounds. New studies have argued for the ability of honey to interact with the complex cellular machinery and achieve tissue repair. Therefore, a review was carried out of current contents of the properties of honey and their role in the morphophysiological processes of wound repair. Hence, antibacterial action, anti-oxidant and anti-inflammatory components of its properties were evaluated. At the same time, we reviewed physical and wound debridement benefits, the importance of floral origin and geographical location in the medicinal value of different types of honey. The studies suggest that the effects of honey are the result of a combined activity, where its components interact synergistically to achieve therapeutic function. Its action is realized in all stages of the morphophysiological repair process, accomplishing accelerated wound healing. The floral origin and geographical location of the honey are important factors to consider since the composition of honey is variable, as is its medicinal value.


Subject(s)
Anti-Bacterial Agents/pharmacology , Burns/drug therapy , Honey , Wound Healing/drug effects , Anti-Inflammatory Agents/pharmacology , Antioxidants/pharmacology
20.
Acta cir. bras ; 30(6): 430-438, 06/2015. tab, graf
Article in English | LILACS | ID: lil-749640

ABSTRACT

PURPOSE: To examine the effects of the oil mixes (ω-9, ω-6 and ω-3) in rats subjected to thermal burn. It was also aimed to assess whether the sources of ω3 would interfere with the effect of such mixes on the thermal injury. METHODS: Thirty-six rats distributed into five groups: burned + water, burned + isolipid mix, burned + oil mix 1 (ALA), burned + oil mix 2 (ALA + EPA + DHA of fish) and burned + oil mix 3 (ALA + DHA from seaweed). The thermal injury was involving total thickness of skin. After the burns animals received the oil mixes for seven days. The lesions were evaluated by immunohistochemistry. RESULTS: Animals receiving mix 3 showed a smaller extension of the thermal injury as compared to those that were supplemented with other oils mixes. Expression of Ki-67 in the receiving Mix 3 increased as compared to all the other groups. Animals supplemented with mix 3 were able to inhibit NF-κB in injured tissue. CONCLUSION: Rats received oil mix in which the source of ω3 (ALA+DHA of seaweed) showed inhibition of NF-κB, increase in cell proliferation, and reduction the extension of thermal lesion. .


Subject(s)
Animals , Male , Burns/drug therapy , Fatty Acids/pharmacology , /drug effects , NF-kappa B/drug effects , Seaweed/chemistry , Burns/pathology , Cell Proliferation/drug effects , Drug Combinations , /pharmacology , /therapeutic use , /pharmacology , /therapeutic use , Immunohistochemistry , /analysis , NF-kappa B/analysis , Random Allocation , Rats, Wistar , Reproducibility of Results , Time Factors , Treatment Outcome
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