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1.
Arq. ciências saúde UNIPAR ; 26(1): 1-12, Jan-Abr. 2022.
Article in Portuguese | LILACS | ID: biblio-1362657

ABSTRACT

Mesmo com a evolução do conhecimento científico, a utilização de plantas medicinais é uma das práticas mais antigas ainda realizadas pelo homem, especialmente pelos habitantes de comunidades e municípios do interior do Brasil, principalmente em regiões com baixos índices de desenvolvimento humano. O objetivo deste trabalho foi realizar um estudo etnobotânico sobre as plantas medicinais utilizadas pelos moradores de um bairro localizado em um município ribeirinho do interior do estado do Amazonas. Participaram do estudo cem indivíduos, e os dados obtidos pela pesquisa foram compilados por meio de um formulário, contendo 14 questões (objetivas e discursivas). Os resultados demonstraram que 95% dos moradores faziam uso de plantas medicinais. Foram citadas 89 espécies, pertencentes a 48 famílias botânicas, com destaque para a Lamiaceae. As plantas mais citadas foram: Plectranthus barbatus (boldo) ­ 6,1%, Citrus sinensis (laranjeira) ­ 5,8% e Allium sativum (alho) ­ 4,7%. No entanto, quando analisado o índice de concordância (porcentagem de uso principal = CUP), a Citrus sinensis (laranjeira) apresentou um CUP de 80,9%, seguida por Plectranthus barbatus (boldo) e Disphania ambrosioides (mastruz), com 68,1% e 61,5%, respectivamente. Com relação ao modo de preparo, 61,1% citaram infusão, e as principais enfermidades tratadas foram as dores de estômago, com 13,1%. É importante enfatizar a necessidade de mais estudos acerca dos reais benefícios dessas ervas, a fim de que a divulgação de tais informações possa complementar o conhecimento empírico já difundido entre a população local. Dessa forma, será possível ampliar o conhecimento etnobotânico como um todo e, consequentemente, promover saúde e bem-estar.


Despite the evolution of scientific knowledge, the use of medicinal plants is one of the oldest practices still used by men and, especially by the inhabitants of communities and municipalities of the interior of Brazil, mainly in regions with low human development rates. The purpose of this work was to perform an ethnobotanical study on medicinal plants used by residents of a neighborhood located in a riverside city in the interior of the state of Amazonas. A total of 100 individuals participated in the study, with data being obtained through the use of a form containing 14 open and closed-ended questions. The results showed that 95% of the residents used medicinal plants. A total of 89 species, belonging to 48 botanical families were mentioned, with emphasis to Lamiaceae. The plants that were most frequently mentioned were Plectranthus barbatus (locally known as boldo) ­ 6.1%; Citrus sinensis (orange tree) ­ 5.8%; and Allium sativum (garlic) ­ 4.7%. However, when analyzing the agreement index (percentage of main use = CUP), Citrus sinensis (orange tree) presented a CUP of 80.9%, followed by Plectranthus barbatus (boldo) and Disphania ambrosioides (Mexican tea), with 68.1 and 61.5%, respectively. In relation to the method of preparation, 61.1% cited infusion, with the main disorder treated being stomachache, with 13.1%. It is important to emphasize the need for further studies on the actual benefits of these herbs so that the dissemination of the information can complement the already widespread empirical knowledge among the local population. Thus, it will be possible to expand the ethnobotanical knowledge as a whole and, consequently, promote health and well-being.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Aged , Plants, Medicinal/adverse effects , Ethnobotany , Tea/adverse effects , Agricultural Cultivation , Lamiaceae/adverse effects , Peumus/adverse effects , Citrus sinensis/adverse effects , Diarrhea/prevention & control , Influenza, Human/therapy , Juices , Inflammation/prevention & control , Phytotherapy
2.
Braz. j. med. biol. res ; 53(1): e8621, Jan. 2020. tab, graf
Article in English | LILACS | ID: biblio-1055482

ABSTRACT

The use of specially designed wound dressings could be an important alternative to facilitate the healing process of wounds in the hyperglycemic state. Biocompatible dressings combining chitosan and alginate can speed up wound healing by modulating the inflammatory phase, stimulating fibroblast proliferation, and aiding in remodeling phases. However, this biomaterial has not yet been explored in chronic and acute lesions of diabetic patients. The aim of this study was to evaluate the effect of topical treatment with a chitosan-alginate membrane on acute skin wounds of hyperglycemic mice. Diabetes mellitus was induced by streptozotocin (60 mg · kg-1 · day-1 for 5 days, intraperitoneally) and the cutaneous wound was performed by removing the epidermis using a surgical punch. The results showed that after 10 days of treatment the chitosan and alginate membrane (CAM) group exhibited better organization of collagen fibers. High concentrations of interleukin (IL)-1α, IL-1β, granulocyte colony-stimulating factor (G-CSF), and tumor necrosis factor-alpha (TNF-α) were detected in the first and second days of treatment. G-CSF and TNF-α level decreased after 5 days, as well as the concentrations of TNF-α and IL-10 compared with the control group (CG). In this study, the inflammatory phase of cutaneous lesions of hyperglycemic mice was modulated by the use of CAM, mostly regarding the cytokines IL-1α, IL-1β, TNF-α, G-CSF, and IL-10, resulting in better collagen III deposition. However, further studies are needed to better understand the healing stages associated with CAM use.


Subject(s)
Animals , Male , Rabbits , Bandages , Wound Healing/drug effects , Chitosan/administration & dosage , Cell Proliferation/drug effects , Diabetes Mellitus, Experimental/physiopathology , Alginates/administration & dosage , Time Factors , Biocompatible Materials/administration & dosage , Biomarkers/blood , Collagen/drug effects , Inflammation/prevention & control , Mice, Inbred C57BL
3.
Braz. j. med. biol. res ; 53(7): e9628, 2020. tab, graf
Article in English | ColecionaSUS, LILACS, ColecionaSUS | ID: biblio-1132530

ABSTRACT

Ophiopogonin D (OP-D) is the principal pharmacologically active ingredient from Ophiopogon japonicas, which has been demonstrated to have numerous pharmacological activities. However, its protective effect against renal damage in streptozotocin (STZ)-induced diabetic nephropathy (DN) rats remains unclear. The present study was performed to investigate the protective effect of OP-D in the STZ-induced DN rat model. DN rats showed renal dysfunction, as evidenced by decreased serum albumin and creatinine clearance, along with increases in serum creatinine, blood urea nitrogen, TGF-β1, and kidney hypertrophy, and these were reversed by OP-D. In addition, STZ induced oxidative damage and inflammatory response in diabetic kidney tissue. These abnormalities were reversed by OP-D treatment. The findings obtained in the present study indicated that OP-D might possess the potential to be a therapeutic agent against DN via inhibiting renal inflammation and oxidative stress.


Subject(s)
Animals , Male , Rats , Saponins/therapeutic use , Oxidative Stress/drug effects , Ophiopogon/chemistry , Diabetes Mellitus, Experimental/drug therapy , Diabetic Nephropathies/drug therapy , Inflammation/prevention & control , Spirostans/therapeutic use , Rats, Sprague-Dawley , Streptozocin
4.
São Paulo; s.n; s.n; 2020. 75 p. graf, tab.
Thesis in Portuguese | LILACS | ID: biblio-1290802

ABSTRACT

O kombucha é uma bebida fermentada tradicional, originária da China, preparada pela fermentação de chá preto adoçado com cultura mista de bactérias e leveduras chamada Simbiotic Culture of Bacteria and Yeast (SCOBY). Tem sido alegado que o mesmo possui propriedades funcionais, tais como recuperação ou manutenção de peso corporal, atividade antihiperglicêmica, entre outras. Por não existirem estudos suficientes que as comprovem, este trabalho teve por objetivo avaliar a influência do consumo de kombucha como tratamento alternativo para amenizar e/ou retardar sintomas e complicações do Diabetes Mellitus e identificar as possíveis modificações metabólicas, morfológicas e imunológicas ocorridas em camundongos com diabetes tipo 1. De acordo com os resultados obtidos, observou-se que, apesar de ter havido recuperação de massa corpórea próxima daquela que se tinha antes da indução da diabetes, esse efeito não foi exclusivo do kombucha e, embora a influência no controle glicêmico tenha sido maior nos camundongos normoglicêmicos que diabéticos, acredita-se que a administração por um período prolongado pudesse indicar melhores resultados, uma vez que as avaliações histológicas e morfométricas do intestino demonstraram resultados satisfatórios quanto ao aumento da superfície de mucosa e diminuição do infiltrado inflamatório, favorecendo a modulação imunológica. Logo, considera-se necessária a realização de mais trabalhos para comprovação da capacidade funcional do kombucha e elucidação de sua eficácia enquanto tratamento exclusivo e/ou complementar do diabetes


Kombucha is a traditional Chinese fermented beverage prepared by fermenting sweetened black tea with mixed bacterial and yeast culture called Simbiotic Culture of Bacteria and Yeast (SCOBY). It has been claimed that it has functional properties such as body weight recovery or maintenance, antihyperglycemic activity, among others. Because there are not enough studies to prove them, this study aimed to evaluate the influence of kombucha consumption as an alternative treatment to alleviate and/or delay symptoms and complications of Diabetes Mellitus and to identify possible metabolic, morphological and immunological changes in mice with type 1 diabetes. According to the results obtained, it was observed that, although there was a recovery of body mass close to the one obtained before diabetes induction, this effect was not unique to kombucha, and although the influence on glycemic control was greater in normoglycemic rather than diabetic mice, it is believed that administration over a prolonged period could indicate better results, since histological and morphometric evaluations of the intestine showed satisfactory results in terms of mucosal surface enlargement and decreased inflammatory infiltrate, favoring immune modulation. . Therefore, further work is considered necessary to prove the functional capacity of kombucha and to elucidate its effectiveness as an exclusive and / or complementary treatment of diabetes


Subject(s)
Animals , Mice , Diabetes Mellitus, Type 1/diagnosis , Kombucha Tea/analysis , Efficacy/classification , Diabetes Complications/complications , Functional Food/analysis , Fermented Foods and Beverages/adverse effects , Hypoglycemic Agents , Inflammation/prevention & control , Maintenance
5.
Rev. Soc. Bras. Med. Trop ; 53: e20200016, 2020. tab, graf
Article in English | LILACS | ID: biblio-1101450

ABSTRACT

Abstract INTRODUCTION: Sepsis is an important cause of mortality and morbidity, and inflammatory response and oxidative stress play major roles underlying its pathophysiology. Here, we evaluated the effect of intraperitoneal etanercept administration on oxidative stress and inflammation indicators in the kidney and blood of experimental sepsis-induced rats. METHODS: Twenty-eight adult Sprague Dawley rats were classified into Control (Group 1), Sepsis (Group 2), Sepsis+Cefazolin (Group 3), and Sepsis+Cefazolin+Etanercept (Group 4) groups. Kidney tissue and serum samples were obtained for biochemical and histopathological investigations and examined for the C reactive protein (CRP), tumor necrosis factor-alpha (TNF-α), triggering receptor expressed on myeloid cells (TREM), and malondialdehyde (MDA) levels. RESULTS: The levels of TNF-α, TREM, and MDA in serum and kidney samples were significantly higher in rats from sepsis group than in rats from control group (p < 0.05). Group 3 showed a significant reduction in serum levels of TNF-α, CRP, and TREM as compared with Group 2 (p < 0.05). Serum TNF-α, CRP, TREM, and MDA levels and kidney TNF-α and TREM levels were significantly lower in Group 4 than in Group 2 (p < 0.05). Serum TNF-α and TREM levels in Group 4 were significantly lower than those in Group 3, and histopathological scores were significantly lower in Group 3 and Group 4 than in Group 2 (p < 0.05). Histopathological scores of Group 4 were significantly lower than those of Group 3 (p < 0.05). CONCLUSIONS: Etanercept, a TNF-α inhibitor, may ameliorate sepsis-induced oxidative stress, inflammation, and histopathological damage.


Subject(s)
Animals , Rats , Anti-Inflammatory Agents, Non-Steroidal/administration & dosage , Tumor Necrosis Factor-alpha/blood , Sepsis/pathology , Oxidative Stress/drug effects , Etanercept/administration & dosage , Inflammation/prevention & control , Kidney/drug effects , Anti-Inflammatory Agents, Non-Steroidal/pharmacology , Rats, Sprague-Dawley , Sepsis/blood , Disease Models, Animal , Etanercept/pharmacology , Inflammation/pathology , Injections, Intraperitoneal
6.
Rev. ADM ; 76(5): 267-271, sept.-oct. 2019. ilus, tab
Article in Spanish | LILACS | ID: biblio-1053026

ABSTRACT

Introducción: La odontectomía del tercer molar produce una respuesta metabólica al trauma quirúrgico caracterizada por una importante infl amación del área, por lo que para su control se cuenta con diferentes opciones terapéuticas como la farmacoterapia, crioterapia y laserterapia, así como otras alternativas como la compresión de la región, cuya propuesta presentada en este trabajo es a través de la utilización de un apósito adhesivo facial. Objetivo: Evaluar la efi cacia de la aplicación de un apósito adhesivo facial para el control de la infl amación postquirúrgica de la odontectomía del tercer molar. Material y métodos: Se realizó un ensayo clínico controlado de fase I multicéntrico. Se conformó un grupo de estudio experimental y de control con 10 participantes en cada uno, de ambos sexos, de 18-30 años de edad, sanos y que presentaron un tercer molar inferior izquierdo retenido vertical o mesioangular, clase I o II, posición A o B (Pell y Gregory). Se efectuaron las odontectomías bajo anestesia local y sólo en el grupo experimental se utilizó un apósito adhesivo transparente marca Tegaderm® de 3M, el cual se colocó sobre la mejilla de los pacientes durante 48 horas. La evaluación de la infl amación se realizó con el método de Laskin modifi cado previo al procedimiento, a las 48 horas y en el quinto día postoperatorio. Resultados: El promedio de la longitud de la línea 1 a las 48 horas y al quinto día postoperatorio en el grupo experimental fue menor que en el grupo control siendo las diferencias estadísticamente signifi cativas. En el resto de las líneas, la longitud promedio también fue menor en el grupo experimental; sin embargo, no se encontraron diferencias estadísticamente signifi cativas. Conclusión: Este ensayo clínico no es concluyente respecto a la efi cacia del apósito adherible facial para reducir la infl amación postquirúrgica de la odontectomía del tercer molar (AU)


Introduction: The third molar odontectomy produces a metabolic response to surgical trauma characterized by an important infl ammation of the area, so that, for its control, it has diff erent therapeutic options as the pharmacotherapy, cryotherapy and laser therapy, as well as other alternatives such as compression of the region, whose proposal presented in this work is using a facial adhesive dressing. Objective: Evaluate the eff ectiveness of the implementation of a facial adhesive dressing for the control of postsurgical infl ammation of the third molar odontectomy. Material and methods: It has been made a controlled clinical trial of phase I multicentric. It formed a group of experimental and control study with 10 participants in each one, of both sexes, 18- 30 years of age, healthy and that presented a lower left third molar retained vertical or mesioangular, class I or II, position A or B (Pell and Gregory). Odontectomy were performed under local anesthesia and only in the experimental group used a transparent fi lm dressing Tegaderm® by 3M which was placed on the cheek of the patients for 48 hours. The evaluation of the infl ammation was performed with the method of Laskin modifi ed prior to the procedure, at 48 hours and on the 5th postoperative day. Results: The average of the length of the line 1 to 48 hours and at the 5th postoperative day was lower in the experimental group than in the control group, the diff erences being statistically signifi cant. In the rest of the lines, the average length was also lower in the experimental group, however, there were no statistically signifi cant diff erences. Conclusion: This trial is not conclusive as to the eff ectiveness of the dressing stick coating facial to reduce the postsurgical infl ammation of the third molar odontectomy (AU)


Subject(s)
Humans , Male , Female , Adolescent , Adult , Osteotomy , Pain, Postoperative/prevention & control , Bandages , Inflammation/prevention & control , Molar, Third/surgery , Postoperative Complications/prevention & control , Statistical Analysis , Mexico
7.
An. bras. dermatol ; 94(2): 164-171, Mar.-Apr. 2019. tab, graf
Article in English | LILACS | ID: biblio-1001151

ABSTRACT

Abstract BACKGROUND: Tacrolimus, for its activity on modulation of collagen production and fibroblast activity, may have a role in the prevention of hypertrophic scars. OBJECTIVES: Evaluate macroscopic, microscopic, metabolic, laboratory effects and side effects of the use of topical tacrolimus ointment, in different concentrations, in the prevention of hypertrophic scars. METHODS: Twenty-two rabbits were submitted to the excision of 2 fragments of 1 cm of each ear, 4 cm apart, down to cartilage. The left ear of the animals was standardized as control and Vaseline applied twice a day. The right ear received tacrolimus ointment, at concentrations of 0.1% on the upper wound and 0.03% on the lower wound, also applied twice a day. Macroscopic, microscopic, laboratory criteria and the animals' weight were evaluated after 30 days of the experiment. RESULTS: Wounds treated with tacrolimus, at concentrations of 0.1% and 0.03%, when compared to control, showed a lower average degree of thickening (p = 0.048 and p <0.001, respectively). The average of scar thickness and lymphocyte, neutrophil and eosinophil concentrations are lower in the treated wounds compared to the control (p <0.001, p=0.022, p=0.007, p=0.044, respectively). The mean concentration of lymphocytes is lower in wounds treated with a higher concentration of the drug (p=0.01). STUDY LIMITATIONS: experiment lasted only 30 days. CONCLUSIONS: Tacrolimus at the 2 concentrations evaluated reduced the severity of inflammatory changes and positively altered the macroscopic aspect of the scar in the short term. Its use was shown to be safe, with no evidence of systemic or local adverse effects.


Subject(s)
Animals , Male , Rabbits , Tacrolimus/therapeutic use , Calcineurin Inhibitors/therapeutic use , Ointments , Urea/blood , Serum Albumin/analysis , Serum Albumin/drug effects , Administration, Topical , Tacrolimus/administration & dosage , Tacrolimus/pharmacology , Cicatrix, Hypertrophic/pathology , Cicatrix, Hypertrophic/prevention & control , Lymphocyte Count , Creatinine/blood , Alanine Transaminase/drug effects , Alanine Transaminase/blood , Disease Models, Animal , Ear, External/pathology , Erythema/pathology , Calcineurin Inhibitors/administration & dosage , Calcineurin Inhibitors/pharmacology , Inflammation/pathology , Inflammation/prevention & control
8.
Rev. Assoc. Med. Bras. (1992) ; 65(3): 388-393, Mar. 2019. graf
Article in English | LILACS | ID: biblio-1003032

ABSTRACT

SUMMARY OBJECTIVES: We examined the effects of tadalafil, one of the phosphodiesterase type 5 (PDE5) inhibitors, in a rat model of with partial and complete unilateral ureteral obstruction (UUO). METHODS: The rats were divided into 5 groups: sham (n=6), partial unilateral ureteral obstruction (PUUO, n=6), PUUO with tadalafil treatment (PUUO+T; Cialis, 10 mg/72 h, intragastric; Lilly, Indianapolis, Indiana, USA), complete unilateral ureteral obstruction (CUUO, n=6), and CUUO with tadalafil treatment (CUUO+T). RESULTS: Fifteen days after the UUO, the ureter presented changes in the layers of urothelium and significant infiltration of inflammatory cells in the PUUO and CUUO groups. Compared with the sham, PUUO and CUUO groups had severe increased inflammatory cell infiltration. The urothelial epithelium exhibited cell degeneration and loss because of the swollen, atrophic, and denuded epithelial cells in the PUUO and CUUO groups. In the PUUO+T and CUUO+T groups, the urothelium revealed less epithelial cell degeneration and loss. The expressions of α-smooth muscle actin (α-SMA) and transforming growth factor-β (TGF-β) exhibited up-regulation in the PUUO and CUUO groups. The expression of TGF-β decreased positively correlated with that of α-SMA in the tadalafil therapy groups, PUUO+T and CUUO+T. CONCLUSION: The phosphodiesterase type 5 inhibitor's tadalafil reduced expressions of α-SMA and TGF-β in the obstructed ureters, measured by biochemical examinations. In addition, tadalafil decreased urothelium degeneration due to the decreased epithelial cell loss and inflammatory cell infiltration. Our results show that tadalafil prevents or slows down the onset of ureter inflammation and urothelial degeneration in rats with UUO.


RESUMO OBJETIVOS: Examinamos os efeitos do tadalafil em um dos inibidores da fosfodiesterase tipo 5 (PDE5) em um modelo de rato com obstrução ureteral unilateral parcial e completa (UUO). MÉTODOS: Os ratos foram divididos em cinco grupos: sham (n = 6), obstrução ureteral unilateral parcial (PUUO, n = 6), PUUO com tadalafil (PUUO T; Cialis, 10 mg/72 h, intragástrica; Lilly, Indianapolis, Indiana, EUA), completa obstrução ureteral unilateral (CUUO, n = 6) e CUUO com tratamento com tadalafil (CUUO T). RESULTADOS: Quinze dias após a UUO, o ureter apresentou alterações nas camadas de urotélio e infiltração significativa de células inflamatórias nos grupos PUUO e CUUO. Em comparação com os grupos sham, PUUO e CUUO, houve um aumento grave da infiltração de células inflamatórias. O epitélio urotelial exibiu degeneração e perda celular devido às células epiteliais inchadas, atróficas e desnudas nos grupos PUUO e CUUO. Nos grupos PUUO T e CUUO T, o urotélio revelou menor degeneração e perda de células epiteliais. Nós mostramos que a expressão da actina do músculo liso-α (α-SMA) e do fator de crescimento transformador-β (TGF-β) foram exibidas como sub-regulação nos grupos PUUO e CUUO. A expressão do TGF-β foi diminuída positivamente correlacionada com a da α-SMA nos grupos de terapia com tadalafil, PUUO T e CUUO T. CONCLUSÃO: O tadalafil do inibidor da fosfodiesterase tipo 5 reduziu as expressões α-SMA e TGF-β nos ureteres obstruídos, medidos por exames bioquímicos. Além disso, o tadalafil diminuiu a degeneração do urotélio devido à diminuição da perda de células epiteliais e da infiltração de células inflamatórias. Nossos resultados mostram que o tadalafil previne ou retarda o início da inflamação do ureter e degeneração urotelial em ratos com UUO.


Subject(s)
Animals , Male , Ureteral Obstruction/pathology , Ureteral Obstruction/drug therapy , Phosphodiesterase 5 Inhibitors/pharmacology , Tadalafil/pharmacology , Reference Values , Ureter/drug effects , Ureter/pathology , Enzyme-Linked Immunosorbent Assay , Up-Regulation , Reproducibility of Results , Transforming Growth Factor beta/analysis , Actins/analysis , Rats, Sprague-Dawley , Inflammation/pathology , Inflammation/prevention & control
9.
Braz. j. med. biol. res ; 52(3): e8251, 2019. tab, graf
Article in English | LILACS | ID: biblio-984035

ABSTRACT

Oral mucositis (OM) is a common and dose-limiting side effect of cancer treatment, including 5-fluorouracil (5-FU) and radiotherapy. The efficacy of the therapeutic measures to prevent OM is limited and disease prevention is not fully observable. Amifostine is a cytoprotective agent with a described anti-inflammatory potential. It is clinically used to reduce radiotherapy and chemotherapy-associated xerostomia. This study investigated the protective effect of amifostine on an experimental model of OM. Hamsters were divided into six groups: saline control group (5 mL/kg), mechanical trauma (scratches) of the right cheek pouch; 5-FU (60 and 40 mg/kg, ip, respectively, administered on days 1 and 2); amifostine (12.5, 25, or 50 mg/kg) + 5-FU + scratches. Salivation rate was assessed and the animals were euthanized on day 10 for the analysis of macroscopic and microscopic injury by scores. Tissue samples were harvested for the measurement of neutrophil infiltration and detection of inflammatory markers by ELISA and immunohistochemistry. 5-FU induced pronounced hyposalivation, which was prevented by amifostine (P<0.05). In addition, 5-FU injection caused pronounced tissue injury accompanied by increased neutrophil accumulation, tumor necrosis factor-alpha (TNF-α), and interleukin-1 beta (IL-1β) tissue levels, and positive immunostaining for TNF-α, IL-1β, and inducible nitric oxide synthase (iNOS). Interestingly, amifostine prevented the inflammatory reaction and consequently improved macroscopic and microscopic damage (P<0.05 vs 5-FU group). Amifostine reduced inflammation and protected against 5-FU-associated oral mucositis and hyposalivation.


Subject(s)
Animals , Male , Stomatitis/prevention & control , Xerostomia/prevention & control , Amifostine/therapeutic use , Protective Agents/therapeutic use , Fluorouracil/adverse effects , Inflammation/prevention & control , Stomatitis/chemically induced , Stomatitis/pathology , Xerostomia/chemically induced , Xerostomia/pathology , Cricetinae , Disease Models, Animal , Inflammation/chemically induced , Inflammation/pathology
10.
Braz. j. med. biol. res ; 52(6): e8273, 2019. tab, graf
Article in English | LILACS | ID: biblio-1001536

ABSTRACT

Excessive pro-inflammatory cytokines result in adverse pregnancy outcomes, including preeclampsia-like phenotypes, and fetal growth restriction. Anti-inflammation might be an effective therapy. The aim of this research was to investigate whether Uncaria rhynchophylla alkaloid extract (URE), a highly safe anti-inflammation constituent of the herb, can inhibit inflammation and improve clinical characteristics of preeclampsia in a lipopolysaccharide (LPS)-induced preeclampsia rat model. The rat model was established by daily administration of LPS (1 μg/kg body weight per day) from gestational day (GD) 14 to 19. Different doses of URE (35, 70, and 140 mg/kg body weight per day) were administered from GD 14 to GD 19. The effects of URE on proteinuria, maternal hypertension, pregnancy outcomes, as well as pro-inflammatory cytokines levels in serum and placenta were measured. High-dose URE (HURE) treatment decreased LPS-induced mean 24-h proteinuria and systolic blood pressure, and increased fetal weight, placental weight, and the number of live pups (P<0.05). Moreover, increased serum and placental levels of interleukin (IL)-6, IL-1β, tumor necrosis factor-α, and interferon-γ in the LPS-treated group were obviously inhibited after HURE administration (P<0.01). URE improved preeclampsia symptoms and mitigated inflammatory responses in the LPS-induced preeclampsia rat model, which suggests that the anti-inflammation effect of URE might be an alternative therapy for preeclampsia.


Subject(s)
Animals , Female , Pregnancy , Rats , Pre-Eclampsia/prevention & control , Plant Extracts/administration & dosage , Uncaria/chemistry , Inflammation/prevention & control , Anti-Inflammatory Agents/administration & dosage , Pre-Eclampsia/chemically induced , Lipopolysaccharides , Cytokines/drug effects , Cytokines/blood , Disease Models, Animal
11.
Braz. j. med. biol. res ; 52(6): e7628, 2019. tab, graf
Article in English | LILACS | ID: biblio-1001534

ABSTRACT

This study aimed to explore the influence of gut microbiota alterations induced by Linderae radix ethanol extract (LREE) on alcoholic liver disease (ALD) in rats and to study the anti-inflammatory effect of LREE on ALD through the lipopolysaccharide (LPS) toll-like receptor 4 (TLR4)-nuclear factor kappa B (NF-κB) pathway. ALD rat models were established by intragastric liquor [50% (v/v) ethanol] administration at 10 mL/kg body weight for 20 days. Rats were divided into six groups: normal group (no treatment), model group (ALD rats), Essentiale group (ALD rats fed with Essentiale, 137 mg/kg), and LREE high/moderate/low dose groups (ALD rats fed with 4, 2, or 1 g LREE/kg). NF-κB and LPS levels were evaluated. Liver pathological changes and intestinal ultrastructure were examined by hematoxylin and eosin staining and transmission electron microscopy. The gut microbiota composition was evaluated by 16S rDNA sequencing. Expression levels of TLR4 and CD68 in liver tissue, and occludin and claudin-1 in intestinal tissue were measured. LREE treatment significantly reduced NF-κB and LPS levels, improved liver pathological changes, and ameliorated intestinal ultrastructure injury. Meanwhile, LREE-fed groups showed a higher abundance of Firmicutes and a lower abundance of Bacteroidetes than the rats in the model group. Administration of LREE suppressed TLR4 overexpression and promoted the expression of occludin and claudin-1 in intestine tissue. Thus, LREE could partly ameliorate microflora dysbiosis, suppress the inflammatory response, and attenuate liver injury in ALD rats. The protective effect of LREE might be related to the LPS-TLR4-NF-κB pathway.


Subject(s)
Animals , Male , Rats , Plant Extracts/pharmacology , Lindera/chemistry , Gastrointestinal Microbiome/drug effects , Inflammation/prevention & control , Liver/ultrastructure , Liver Diseases, Alcoholic/prevention & control , Lipopolysaccharides/blood , Cytokines/blood , Rats, Sprague-Dawley , Protein-Serine-Threonine Kinases/blood , Plant Roots/chemistry , Disease Models, Animal , Toll-Like Receptor 4/blood , Liver Diseases, Alcoholic/diagnostic imaging
12.
Acta cir. bras ; 34(9): e201900903, 2019. tab, graf
Article in English | LILACS | ID: biblio-1054692

ABSTRACT

Abstract Purpose: To investigate the effect of mesenteric lymph drainage on the spleen injury and the expressions of inflammatory cytokines in splenic tissue in mice following hemorrhagic shock. Methods: Male C57 mice were randomly divided into the sham shock, shock and shock+drainage groups. The mice in both shock and shock+drainage groups suffered femoral artery bleeding, maintained mean arterial pressure (MAP) of 40±2 mmHg for 90 min, and were resuscitated. And mesenteric lymph drainage was performed in the shock+drainage group at the time of resuscitation. After three hours of resuscitation, the splenic tissues were harvested for the histological observation and protein and mRNA expression analysis of cytokines. Results: The spleen in the shock group revealed a significantly structural damage and increased mRNA expressions of MyD88 and TRAF6 and protein expressions of TIPE2, MyD88, TRIF and TRAF3 compared to the sham group. By contrast, the splenic pathological injury in the shock+drainage group was alleviated significantly, and the mRNA and protein expressions of TIPE2, MyD88, TRIF, TRAF3 and TRAF6 were significantly lower than those in the shock group. Conclusion: These results indicate that post-hemorrhagic shock mesenteric lymph drainage alleviates hemorrhagic shock-induced spleen injury and the expressions of inflammatory cytokines.


Subject(s)
Animals , Male , Rats , Shock, Hemorrhagic/complications , Spleen/injuries , Lymphatic Vessels/surgery , Inflammation/prevention & control , Mesentery , Resuscitation , Drainage/methods , Disease Models, Animal , Inflammation/etiology , Mice, Inbred C57BL
13.
Acta cir. bras ; 33(12): 1095-1102, Dec. 2018. tab
Article in English | LILACS | ID: biblio-973485

ABSTRACT

Abstract Purpose: To investigate the gene expression related to inflammation on mice subjected to intestinal ischemia and reperfusion (I/R) and treated with ischemic preconditioning (IPC). Methods: Thirty rats (EPM-Wistar), distributed in five groups of six animals each, were underwent anesthesia and laparotomy. The ischemia time was standardized in 60 minutes and the reperfusion time 120 minutes. IPC was standardized in 5 minutes of ischemia followed by 10 minutes of reperfusion accomplished before I/R. The control group was submitted only to anesthesia and laparotomy. The other groups were submitted to ischemia, I/R, ischemia + IPC and I/R + IPC. It was collected a small intestine sample to analyses by Quantitative Polymerase Chain Reaction in real Time (RT-qPCR) and histological analyses. It was studied 27 genes. Results: The groups that received IPC presented downregulation of genes, observed in of genes in IPC+ischemia group and IPC+I/R group. Data analysis by clusters showed upregulation in I/R group, however in IPC groups occurred downregulation of genes related to inflammation. Conclusion: The ischemia/reperfusion promoted upregulation of genes related to inflammation, while ischemic preconditioning promoted downregulation of these genes.


Subject(s)
Animals , Male , Reperfusion Injury/prevention & control , Gene Expression/physiology , Ischemic Preconditioning/methods , Inflammation/prevention & control , Intestine, Small/blood supply , Reference Values , Time Factors , Reperfusion Injury/genetics , Down-Regulation/physiology , Up-Regulation/physiology , Reproducibility of Results , Treatment Outcome , Rats, Wistar , Real-Time Polymerase Chain Reaction , Mesenteric Ischemia/genetics , Mesenteric Ischemia/prevention & control , Inflammation/genetics
14.
J. bras. pneumol ; 44(5): 378-382, Sept.-Oct. 2018. tab, graf
Article in English | LILACS | ID: biblio-975946

ABSTRACT

ABSTRACT Objective: To evaluate whether methylene blue (MB) could minimize the effects of ischemia-reperfusion injury in the nonischemic lung on a lung transplantation rodent model. Methods: Forty female Sprague-Dawley rats were divided into 20 donors and 20 recipients. The 20 recipient rats were divided into two groups (n = 10) according to the treatment (0.9% saline vs. 1% MB solutions). All animals underwent unilateral lung transplantation. Recipients received 2 mL of saline or MB intraperitoneally prior to transplantation. After 2 h of reperfusion, the animals were euthanized and histopathological and immunohistochemical analyses were performed in the nonischemic lung. Results: There was a significant decrease in inflammation-neutrophil count and intercellular adhesion molecule-1 (ICAM-1) expression in lung parenchyma were higher in the saline group in comparison with the MB group-and in apoptosis-caspase-3 expression was higher in the saline group and Bcl-2 expression was higher in MB group. Conclusions: MB is an effective drug for the protection of nonischemic lungs against inflammation and apoptosis following unilateral lung transplantation in rats.


RESUMO Objetivo: Avaliar se o azul de metileno (AM) pode minimizar os efeitos da lesão de isquemia-reperfusão sobre o pulmão não isquêmico em um modelo de transplante pulmonar em roedores. Métodos: Quarenta ratas Sprague-Dawley foram divididas em 20 doadoras e 20 receptoras. As 20 ratas receptoras foram divididas em dois grupos (n = 10) de acordo com o tratamento (solução salina a 0,9% vs. AM a 1%). Todos os animais foram submetidos a transplante pulmonar unilateral. As receptoras receberam 2 ml de solução salina ou de AM por via intraperitoneal antes do transplante. Após 2 h de reperfusão, os animais foram sacrificados, e foram realizadas análises histopatológicas e imuno-histoquímicas no pulmão não isquêmico. Resultados: Houve diminuição significativa da inflamação - a contagem de neutrófilos e a expressão de intercellular adhesion molecule-1 (ICAM-1, molécula de adesão intercelular-1) foram maiores no grupo salina em comparação com o grupo AM - e da apoptose - a expressão de caspase-3 foi maior no grupo salina, e a expressão de Bcl-2 foi maior no grupo AM. Conclusões: O AM é uma droga eficaz para a proteção de pulmões não isquêmicos contra inflamação e apoptose após transplante pulmonar unilateral em ratos.


Subject(s)
Animals , Female , Rats , Reperfusion Injury/prevention & control , Lung Transplantation/methods , Methylene Blue/therapeutic use , Immunohistochemistry , Rats, Sprague-Dawley , Apoptosis , Inflammation/prevention & control
15.
Braz. dent. j ; 29(2): 140-149, Mar.-Apr. 2018. tab, graf
Article in English | LILACS | ID: biblio-951530

ABSTRACT

Abstract In view of the gastrointestinal problems generated by the ketoprofen use, the ketoprofen association with omeprazole is available on the market. However, this association efficacy in acute pain control has not been established. Bilateral extraction of lower third molars in similar positions is currently the most used model for the evaluation and investigation of the efficacy and pharmacological effects of new compounds for the treatment of acute postoperative pain. The randomized and crossover study consisted in evaluating the clinical efficacy of therapy performed by ketoprofen 100 mg (twice daily-b.i.d.) versus ketoprofen 200 mg + omeprazole 20 mg (once daily-q.d.) to pain, swelling and trismus control in the bilateral extraction model of lower third molars in similar positions in two different appointments, in 50 volunteers. Volunteers reported significantly less postoperative pain at various post-operative periods and consumed less rescue analgesic medication (acetaminophen 750 mg) throughout the study when they took the combination of ketoprofen 200 mg + omeprazole 20 mg (q.d.). Following administration of both study drugs, no gastrointestinal adverse reactions were reported by volunteers. Furthermore, the evaluations of the drugs in pain control by the volunteers were significantly favorable to ketoprofen 200 mg + omeprazole 20 mg (q.d.). For swelling and trismus control, the treatments presented similar results. In conclusion, when volunteers took ketoprofen 200 mg + omeprazole 20 mg (q.d.), they reported significantly less postoperative pain at various post-surgical periods and consumed less rescue analgesic medication throughout the study compared with ketoprofen 100 mg (b.i.d).


Resumo Em vista dos problemas gastrointestinais gerados pelo uso do cetoprofeno, a associação do cetoprofeno com o omeprazol está disponível no mercado. No entanto, esta eficácia de associação no controle da dor aguda não foi estabelecida. A extração bilateral de terceiros molares inferiores em posições semelhantes é atualmente o modelo mais utilizado para a avaliação e investigação da eficácia e efeitos farmacológicos de novos compostos para o tratamento da dor aguda pós-operatória. O estudo randomizado e cruzado consistiu na avaliação da eficácia clínica da terapia com cetoprofeno 100 mg (duas vezes ao dia-b.i.d.) versus cetoprofeno 200 mg + omeprazol 20 mg (uma vez ao dia-q.d.) para o controle da dor, do edema e do trismo no modelo bilateral de terceiros molares inferiores em posições semelhantes em duas consultas diferentes, em 50 voluntários. Os voluntários relataram significativamente menos dor pós-operatória em vários períodos pós-operatórios e consumiram menos medicação analgésica de socorro (acetaminofeno 750 mg) durante todo o estudo quando tomaram a combinação de 200 mg de cetoprofeno + 20 mg de omeprazol (q.d.). Após a administração de ambas as drogas do estudo, nenhuma reação adversa gastrointestinal foi relatada pelos voluntários. Além disso, as avaliações das drogas no controle da dor pelos voluntários foram significativamente favoráveis ​​ao cetoprofeno 200 mg + omeprazol 20 mg (q.d.). Para o controle do edema e do trismo, os tratamentos apresentaram resultados semelhantes. Em conclusão, quando os voluntários tomaram 200 mg de cetoprofeno + 20 mg de omeprazol (q.d.), eles relataram significativamente menos dor pós-operatória em vários períodos pós-cirúrgicos e consumiram menos medicação analgésica de socorro durante o estudo comparado com 100 mg de cetoprofeno (b.i.d).


Subject(s)
Humans , Male , Female , Adolescent , Adult , Young Adult , Omeprazole/therapeutic use , Anti-Inflammatory Agents, Non-Steroidal/therapeutic use , Ketoprofen/therapeutic use , Pain Management/methods , Inflammation/prevention & control , Molar, Third/surgery , Trismus/prevention & control , Anti-Inflammatory Agents, Non-Steroidal/administration & dosage , Anti-Inflammatory Agents, Non-Steroidal/pharmacokinetics , Ketoprofen/administration & dosage , Ketoprofen/pharmacokinetics , Cross-Over Studies , Drug Therapy, Combination
16.
Arch. endocrinol. metab. (Online) ; 62(2): 212-220, Mar.-Apr. 2018. tab, graf
Article in English | LILACS | ID: biblio-887651

ABSTRACT

ABSTRACT Objective To observe the effect of short-term insulin intensive treatment on the monocyte chemoattractant protein-1 (MCP-1) as well as on the nuclear factor-kappa B (NF-κB) expression of peripheral blood monocyte. This is also in addition to observing the serum MCP-1 level in newlydiagnosed type 2 diabetic patients and probing its anti-inflammation effects. Subjects and methods Twenty newly-diagnosed type 2 diabetic patients were treated with an insulin intensive treatment for 2 weeks. MCP-1 and NF-κB expression on the monocyte surface were measured with flow cytometry, the serum MCP-1 level was measured by enzyme linked immunosorbent assay (ELISA) during pretreatment and post-treatment. Results After 2 weeks of the treatment, MCP-1 and NF-κB protein expression of peripheral blood monocyte and serum MCP-1 levels decreased significantly compared with those of pre-treatment, which were (0.50 ± 0.18)% vs (0.89 ± 0.26)% (12.22 ± 2.80)% vs (15.53 ± 2.49)% and (44.53 ± 3.97) pg/mL vs (49.53 ± 3.47) pg/mL, respectively (P < 0.01). The MCP-1 expression on monocyte surface had a significant positive relationship with serum MCP-1 levels (r = 0.47, P < 0.01). Conclusions Short-term insulin intensive therapy plays a role in alleviating the increased inflammation reaction in type 2 diabetics.


Subject(s)
Humans , Male , Female , Middle Aged , Monocytes/chemistry , NF-kappa B/adverse effects , Chemokine CCL2/drug effects , Diabetes Mellitus, Type 2/drug therapy , Inflammation/prevention & control , Insulin/administration & dosage , Enzyme-Linked Immunosorbent Assay , Case-Control Studies , NF-kappa B/blood , Chemokine CCL2/blood , Diabetes Mellitus, Type 2/blood , Flow Cytometry
17.
Acta cir. bras ; 33(3): 238-249, Mar. 2018. tab, graf
Article in English | LILACS | ID: biblio-886269

ABSTRACT

Abstract Purpose: To investigate the effect of ozone oxidative preconditioning (OzoneOP) on inflammation and oxidative stress injury in rat model of renal transplantation. Methods: Thirty six male Sprague Dawley (SD) rats were randomly divided into three groups. Sham group: rats were treated with opening and closing abdomen. Kidney transplantation group (KT group): SD rat received the donor's left kidney derived from another SD rat. Ozone oxidative preconditioning and kidney transplantation (OOP+KT group): donor SD rats received OzoneOP treatments by transrectal insufflations before kidney transplantation. After transplantation, parameters of renal function of recipients were determined. Morphology and pathological changes of renal allograft were examined. Expression of NF-κBp65, HMGB-1 were also determined by Western-blot. Results: Compared to KT group, the morphology and pathological damages of renal allograft were less serious in OOP+KT group. Meanwhile, levels of SOD and GSH-Px of renal allograft in OOP+KT group were higher than those in KT group respectively. Western-blot showed that the expressions of NF-κBp65 and HMGB-1 in OOP+KT group were obviously less than those in KT group. Conclusion: Ozone oxidative preconditioning could attenuate the inflammatory reaction and oxidative stress injury in renal allograft, which might be related with the enhancement of anti-oxidative system and suppression of inflammatory reaction.


Subject(s)
Animals , Male , Rats , Ozone/administration & dosage , Kidney Transplantation/methods , Ischemic Preconditioning/methods , Inflammation/prevention & control , Oxidation-Reduction/drug effects , Superoxide Dismutase/metabolism , Reperfusion Injury/prevention & control , Blotting, Western , Kidney Transplantation/adverse effects , Rats, Sprague-Dawley , Oxidative Stress/drug effects , Models, Animal , Inflammation/etiology
18.
Braz. j. otorhinolaryngol. (Impr.) ; 84(2): 206-211, Mar.-Apr. 2018. tab, graf
Article in English | LILACS | ID: biblio-889365

ABSTRACT

Abstract Introduction To manage the complications of irradiation of head and neck tissue is a challenging issue for the otolaryngologist. Definitive treatment of these complications is still controversial. Recently, hyperbaric oxygen therapy is promising option for these complications. Objective In this study, we used biochemical and histopathological methods to investigate the efficacy of hyperbaric oxygen against the inflammatory effects of radiotherapy in blood and laryngeal tissues when radiotherapy and hyperbaric oxygen are administered on the same day. Methods Thirty-two Wistar Albino rats were divided into four groups. The control group was given no treatment, the hyperbaric oxygen group was given only hyperbaric oxygen therapy, the radiotherapy group was given only radiotherapy, and the radiotherapy plus hyperbaric oxygen group was given both treatments on the same day. Results Histopathological and biochemical evaluations of specimens were performed. Serum tumor necrosis factor-α, interleukin-1β, and tissue inflammation levels were significantly higher in the radiotherapy group than in the radiotherapy plus hyperbaric oxygen group, whereas interleukin-10 was higher in the radiotherapy plus hyperbaric oxygen group. Conclusion When radiotherapy and hyperbaric oxygen are administered on the same day, inflammatory cytokines and tissue inflammation can be reduced in an early period of radiation injury.


Resumo Introdução O manejo das complicações da irradiação do tecido da cabeça e pescoço é uma questão desafiadora para o otorrinolaringologista. O tratamento definitivo dessas complicações ainda é controverso. Recentemente, a oxigenoterapia hiperbárica tem sido uma opção promissora para essas complicações. Objetivo Nesse estudo foram usados métodos bioquímicos e histopatológicos para investigar a eficácia do oxigênio hiperbárico contra os efeitos inflamatórios da radioterapia no sangue e nos tecidos laríngeos, quando a radioterapia e oxigênio hiperbárico são administrados no mesmo dia. Métodos Trinta e dois ratos Wistar albinos foram divididos em quatro grupos. O grupo controle nao recebeu tratamento, o grupo de oxigenio hiperbarico recebeu apenas oxigenoterapia hiperbarica, o grupo de radioterapia recebeu apenas radioterapia e o grupo de radioterapia com oxigenio hiperbarico recebeu ambos os tratamentos no mesmo dia. Resultados Foram realizadas avaliaçoes histopatologicas e bioquimicas dos especimes. Os niveis sericos de fator de necrose tumoral-α, interleucina-1β e inflamaçao tecidual foram significativamente maiores no grupo de radioterapia do que no grupo de radioterapia mais oxigenio hiperbarico, enquanto que a interleucina-10 foi maior no grupo de radioterapia mais oxigenio hiperbarico. Conclusão Quando a radioterapia e o oxigênio hiperbárico são administrados no mesmo dia, as citocinas inflamatórias e a inflamação tecidual podem ser reduzidas no período inicial da radiação.


Subject(s)
Animals , Female , Rats , Radiation Injuries, Experimental/prevention & control , Hyperbaric Oxygenation , Inflammation/prevention & control , Radiation Injuries, Experimental/pathology , Radiation Injuries, Experimental/blood , Tumor Necrosis Factor-alpha/blood , Interleukin-10/blood , Rats, Wistar , Oxidative Stress , Interleukin-1beta/blood , Inflammation/pathology , Inflammation/blood , Neck
19.
Braz. oral res. (Online) ; 32: e42, 2018. tab, graf
Article in English | LILACS | ID: biblio-889494

ABSTRACT

Abstract: Based on aroeira's (Myracrodruon urundeuva) antimicrobial activity and a future trend to compose intracanal medication, the aim of this study was to assess in vivo inflamatory tissue response to the extracts by edemogenic and histological analysis containing inactivated facultative and anaerobic microorganisms. For edema quantification, eighteen animals were divided into three groups (n = 3, periods: 3 and 6 hours) and 0.2 mL of 1% Evans blue per 100 g of body weight was injected into the penile vein under general anesthesia. After 30 min the animals received a subcutaneous injection in the dorsal region of aqueous or ethanolic extract of aroeira or saline (control) containing inactivated bacteria. Samples were collected, immersed in formamide for 72h, and evaluated by spectrophotometry (630 m). For histological analysis, polyethylene tubes with the extracts were implanted in the dorsal of 30 male rats. Analysis of the fibrous capsule and inflammatory infiltrate were performed after 7 and 30 days. The aqueous extract group induced less edema in both postoperative periods compared to the other groups, but the differences were not significant (p > 0.05). Tissue repair was significantly better after 30 days than after 7 days (p < 0.01). The aqueous solution showed less inflammatory response than the ethanolic solution (p < 0.05), with tendency for better results than control after 7 days. After 30 days, the response to both extracts was similar to control. The aqueous and ethanolic aroeira extracts containing inactivated microorganisms showed a trend for better results than saline, even when associated with microorganisms, and facilitated the tissue repair process.


Subject(s)
Animals , Male , Rats , Anacardiaceae/chemistry , Edema/prevention & control , Gram-Negative Bacteria/drug effects , Gram-Positive Bacteria/drug effects , Inflammation/prevention & control , Plant Extracts/pharmacology , Subcutaneous Tissue/microbiology , Edema/pathology , Gram-Negative Bacteria/classification , Gram-Positive Bacteria/classification , Inflammation/pathology , Rats, Wistar , Subcutaneous Tissue/drug effects , Subcutaneous Tissue/pathology , Time Factors
20.
Clinics ; 73: e150, 2018. tab, graf
Article in English | LILACS | ID: biblio-974929

ABSTRACT

OBJECTIVES: Dietary omega-3 fatty acids have been efficacious in decreasing serum cholesterol levels and reducing the risk of cardiovascular disease. However, the metabolic and molecular changes induced by the omega-3 fatty acid α-linolenic acid (ALA), which is found in linseed oil, are not fully understood. In this study, we showed a correlation between ALA and insulin resistance, inflammation and endoplasmic reticulum stress (ERS). METHODS: We studied 40 male mice (C57/BL6) divided into 4 groups: a control (C) group, a control + omega-3/ALA (CA) group, a high-fat diet (HFD) (H) group and a high-fat diet + omega-3/ALA (HA) group. For 8 weeks, the animals in the H and HA groups were fed a high-fat (60%) diet, while the animals in the C and CA groups received regular chow. The diets of the CA and HA groups were supplemented with 10% lyophilized ALA. RESULTS: ALA supplementation improved glucose tolerance and reduced insulin resistance, as measured by intraperitoneal glucose tolerance tests and the homeostasis model assessment for insulin resistance, respectively. In addition, ALA reduced hepatic steatosis and modified the standard fat concentration in the liver of animals fed an HFD. Dietary ALA supplementation reduced the serum levels of interleukin 6 (IL-6), interleukin 1 beta (IL-1β) and monocyte chemoattractant protein-1 (MCP-1), increased the expression of important chaperones such as binding immunoglobulin protein (BIP) and heat shock protein 70 (HSP70) and reduced the expression of C/EBP-homologous protein (CHOP) and X-box binding protein 1 (XBP1) in hepatic tissues, suggesting an ERS adaptation in response to ALA supplementation. CONCLUSIONS: Dietary ALA supplementation is effective in preventing hepatic steatosis; is associated with a reduction in insulin resistance, inflammation and ERS; and represents an alternative for improving liver function and obtaining metabolic benefits.


Subject(s)
Animals , Male , Mice , Insulin Resistance , Fatty Acids, Omega-3/administration & dosage , alpha-Linolenic Acid/administration & dosage , Fatty Liver/prevention & control , Diet, High-Fat , Inflammation/prevention & control , Fatty Acids, Omega-3/pharmacology , alpha-Linolenic Acid/pharmacology , Dietary Supplements , Endoplasmic Reticulum Stress/drug effects , Glucose Tolerance Test , Mice, Inbred C57BL
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