Discovery of novel diarylamides as orally active diuretics targeting urea transporters

Urea transporters (UT) play a vital role in the mechanism of urine concentration and are recognized as novel targets for the development of salt-sparing diuretics. Thus, UT inhibitors are promising for development as novel diuretics. In the present study, a novel UT inhibitor with a diarylamide scaffold was discovered by high-throughput screening. Optimization of the inhibitor led to the identification of a promising preclinical candidate,

Three-dimensional bioprinting of osteochondral composite tissue with innovative bio-ink and PCL to repair articular cartilage defects / 中华骨科杂志

Objective:A new type of bio-ink and polycaprolactone (PCL) were used to construct an integrated osteochon-dral composite tissue block by multi-nozzle 3D bioprinter. And the repair results to osteochondral defects were evaluated.Methods:In freeze-drying group: Freeze-dried composite scaffold made by silk fibroin (SF) and β-tricalcium phosphate was used to repair osteochondral defects, as control. In the 3D printing group: PCL was used to printed a hollow multi-layer cylinder frame by 3D biological printer. Extracellular matrix, SF and bone marrow mesenchymal stem cells were used as chondral bio-ink. Then, chon-dral bio-ink was used to print tissue-engineered cartilage on top of PCL frame. Before implantation of cartilage defect, autogenous cancellous bone was filled in PCL frame, then the tissue-engineered osteochondral composite was used to repair osteochondral defects. In mosaic group: Autologous osteochondral transplantation was performed. The repair results of the above three groups were compared by histological score, biochemical analysis and biomechanical test to evaluate the effect of repairing rabbit cartilage defects.Results:The compression modulus of neo-cartilage in the 3D print group 2.56±0.30 MPa was close to that of the mosaic group 2.51±0.13 MPa ( P>0.05), and significantly higher than that of freeze-dried group 1.37±0.14 MPa ( F=11.058, P<0.05). The sGAG contents in the 3D print group 14.49±0.7 μg/mg was close to that of the mosaic group 14.98±0.81 μg/mg ( P>0.05), and significantly higher than that of freeze-dried group 8.72±0.73 μg/mg ( F=20.973, P<0.05). However, there was no significant difference in collagen content between the three groups ( P>0.05). The results of ICRS cartilage repair histology score showed that the scores of the 3D print group were close to those of the mosaic group in the matrix, cell distribution, cell viability and subchondral bone ( P>0.05), and were significantly higher than those of freeze-dried group in the surface and cartilage mineralization scores ( F=19.544, P<0.05). Conclusion:Using the new bio-ink to make bone cartilage composite scaffold by 3D bio printing can simplify the construction of tissue-engineered bone cartilage composite tissue in vitro, and can repair cartilage defects in vivo.

Quality consistency evaluation and intelligent visualization of performance parameters of carboxymethylcellulose sodium / 药学学报

In this study, physical fingerprint and multivariate statistical analysis was applied to characterize the quality consistency of different sources of carboxymethylcellulose sodium, and the visualization of R language was used to explore the intrinsic correlation on its performances, and we drew contour maps between independent variables and flowability of powder to find the design space. Through the physical fingerprint and multivariate statistical analysis, it was found that there were differences in the powder properties of carboxymethylcellulose sodium from different sources, and its moisture content, bulk density and tapped density have a great influence on the fluidity. The fillibility was positively correlated with flowability, both negatively correlated with compressibility by R intelligent visualization analysis, which was statistically significant (P < 0.01). When the angle of repose is 30° - 40°, the appropriate design space was found as 5.092 2% < moisture content < 7.006 7%, 0.560 2 g·cm-3 < bulk density < 0.579 9 g·cm-3, and 0.646 3 g·cm-3 < tapped density < 0.816 5 g·cm-3. The results show that it is scientific and feasible to evaluate the quality consistency of pharmaceutical excipients by using the physical fingerprint, multivariate statistical analysis and visualization methods, which provides new ideas for the production and quality evaluation of excipients and the development of generic prescriptions.

Elaboración de productos tipo tallarín libres de gluten y evaluación de sus propiedades fisicoquímicas / Elaboration of gluten free noodle products and evaluation of its physicochemical properties

RESUMEN La creciente demanda de productos libres de gluten ha dado lugar al estudio y desarrollo de alimentos que suplan las necesidades de los consumidores. El objetivo de esta investigación fue elaborar productos libres de gluten tipo tallarín y evaluar sus propiedades fisicoquímicas. Para ello, se empleó plátano o yuca como fuentes alternativas a la harina de trigo. Se determinaron sus propiedades fisicoquímicas. Se extrajeron harina y almidones y, a partir de ellas, se evaluaron sus propiedades térmicas, empleando calorimetría de barrido diferencial y termogravimetría. Se formularon y elaboraron productos similares a los tallarines empleando las harinas y se analizaron sus propiedades fisicoquímicas, microbiológicas y sensoriales, usando, como control, un producto comercial de trigo. La yuca presentó mayor humedad que el plátano, lo que está relacionado con su susceptibilidad a la degradación. En el análisis termogravimétrico, los productos de yuca mostraron mayor reducción de peso en la zona de alta volatilidad, asociado a la pérdida de humedad. Las harinas y los almidones de plátano presentaron temperaturas de gelatinización mayores que las registradas para los productos de yuca. La humedad y acidez de los tallarines elaborados presentaron valores dentro de la norma (NTC 1055-2014). En ambos casos, su contenido de cenizas fue superior al fideo comercial. Los tallarines elaborados, se pueden considerar inocuos, con buenos parámetros de aceptación sensorial. Estos resultados constituyen un punto de partida en el estudio y aplicación de fuentes de harinas y almidones no tradicionales, permitiendo la generación de valor agregado a cultivos de importancia en la región.

ABSTRACT The growing demand of free gluten products has shown the necessity to study and develop new products in order to supply the consumer request. The objective of this research was to elaborate gluten-free products similar to noodles and to evaluate their physicochemical properties. Plantain or cassava were employed to replace wheat flour. Physical and chemical properties were determined in plantain and cassava samples. Both, Plantain and Cassava Flour and their starches were extracted. Thermal characteristics of flour and starch were evaluated employing differential scanning calorimetry and thermal gravimetric analysis. Products similar to noodle were formulated and elaborated employing plantain or cassava flour. Noodle physicochemical, microbiological and sensorial characteristics were analyzed, employing a commercial product as a control. Cassava presented higher humidity values than plantain, it is related to their susceptibility to degradation. In thermogravimetric analysis, cassava products shown upper weight reduction in high volatility zone associated to humidity lost. Plantain flours and starches presented gelatinization temperatures higher than registered for cassava products. Both plantain and cassava noodles presented humidity and acidity values according to the legal legislation (NTC 1055-2014). Developed products showed ash content higher than commercial noodles. According to microbiological and sensorial analyses, the plantain and cassava products could be considered innocuous with good consumer acceptation. These results could constitute a starting point in the study and application of different flours and starches from non-traditional sources, which allow to increase the value of crops in the region.

Effectiveness of Polyvinyl Acetate Sheeted with Carboxymethyl Cellulose as a Packing Material after Septoplasty

BACKGROUND AND OBJECTIVES: Although polyvinyl acetate (Merocel®) has been widely used as a packing material after septoplasty, removable nasal packing can increase patient discomfort, local pain, and pressure. Furthermore, the removal of nasal packing has been described as the most uncomfortable and distressing feature associated with septoplasty. The purpose of this study was to investigate the efficacy of polyvinyl acetate with carboxymethyl cellulose sheet (Rhinocel®) nasal packing on patient subjective symptoms, degree of bleeding, hemostasis, and wound healing following septoplasty. SUBJECTS AND METHOD: Forty patients with nasal septum deviation requiring septoplasty were included. Following surgery, one nasal cavity was packed with Rhinocel® and the other one with Merocel®. Patient subjective symptoms while the packing was in situ, hemostatic properties, pain on removal, degree of bleeding on removal, duration of hemostasis after removal, postoperative wound healing, and the cost of the pack were evaluated. RESULTS: Although the two types of packing materials were equally effective in controlling postoperative bleeding after septoplasty, Rhinocel® was significantly more comfortable while in situ and less painful on removal than Merocel®, which was associated with significantly more bleeding on removal and so more time was needed to control hemorrhage. There was no significant difference in postoperative wound healing or pack cost. CONCLUSIONS: The use of Rhinocel® after septoplasty has less discomfort, greater patient satisfaction, and less bleeding on removal with no adverse reactions compared to Merocel® packing. Therefore, Rhinocel® may be a useful packing material after septoplasty.

Vitamin A palmitate eye gel and carboxymethylcellulose sodium eye drops on prevention of dry eye after cataract surgery / 国际眼科杂志(Guoji Yanke Zazhi)

·AIM: To observe the efficacy of vitamin A palmitate eye gel and carboxymethylcellulose sodium eye drops on prevention of dry eye after phacoemulsification. ·METHODS: Ninety patients ( ninety eyes ) with age-related cataract enrolled in our hospital from March 2016 to August 2017 were performed phacoemulsification with intraocular lens implantation. They were randomly divided into three groups as control group ( n = 30 ), treated group Ⅰ ( n=30) and treated group Ⅱ ( n=30). The control group was administered with tobramycin and dexamethasone eye drops for 15d as the basis therapy. In treated group Ⅰ, patients were administered with carboxymethylcellulose sodium eye drops for 30d based on the treatment of the control group. The treated groupⅡ was administered with vitamin A palmitate eye gel for 30d on the basis of the treated group Ⅰ. The dry eye symptom score, corneal fluorescence ( FL ) staining scores, breakup time of tear film ( BUT) and Schirmer Ⅰtest ( SⅠt) without topical anesthesia were examined in 1d before operation and 15d and 30d after operation. · RESULTS: There were no statistically significant differences in subjective symptom scores of dry eye, BUT values, FL scores, and SⅠt values among the three groups before treatment (P>0. 05). After treatment, dry eye symptom scores, FL scores, and S Ⅰ t values increased at first and then decreased with time. BUT values decreased at first and then increased. Fifteen and thirty days after surgery, dry eye symptom scores, FL scores, and SⅠt values were significantly lower in the treated group Ⅰ and the treated group Ⅱ than in the control group. While BUT values were significantly higher than that in the control group. The dry eye symptom scores and S Ⅰ t value of treated group Ⅱ were significantly lower than the treated groupⅠ, and the BUT value was significantly higher than that of the treated group Ⅰ(P<0. 05). · CONCLUSION: Phacoemulsification combined with intraocular lens implantation has a certain damage of ocular surface tissue on the initial stage. The application of vitamin A palmitate eye gel combined carboxymethylcellulose sodium eye drops can improve the dry eye symptoms.

Exuberant pyoderma gangrenosum in a patient with autoimmune hepatitis

Abstract: Pyoderma gangrenosum is a rare neutrophilic dermatosis, which usually presents as ulcers with erythematous-violaceous undermined edges and a rough base with purulent or sanguinous exudate. It can be primary or associated with an underlying disease. However, rare cases of its association with autoimmune hepatitis have been described in the literature. Diagnosis is based on a characteristic clinical picture and ruling out other causes of ulcers. This paper aims to discuss the management of corticosteroid therapy and the importance of local treatment. We report a case with torpid evolution, presented with multiple and deep ulcers in a young patient with autoimmune hepatitis, causing pain and significant disability. We observed complete healing of lesions after two months of successful treatment.

Combinatorial protective effects of α-melanocyte-stimulating hormone and carboxymethylcellulose on ocular surface in dry eye rat models / 中华实验眼科杂志

Background Reasearches showed that α-melanocyte-stimulating hormone (α-MSH) inhibits inflammation and ameliorates the ocular surface abnormalities in a scopolamine-induced dry eye rat model,and the managing effect of sodium carboxymethylcellulose (CMC) on dry eyes also has been determined.However,whether α-MSH can enhance the therapeutic effects of CMC remains to be investigated.Objective This study was to investigate the protective effects of α-MSH combined with CMC on ocular surface in a scopolamine-induced dry eye rat model.Methods Sixty clean female Wistar rats were randomly divided into normal control group,model control group,NaCl group,CMC group,α-MSH group and α-MSH+CMC group,and 10 rats for each group.The dry eye models were established by subcutaneous injection of scopolamine hydrobromide at 9:00,12:00,15:00 and 18:00 per day for 28 days.0.9％ NaCl solution,1×10 3 mg/ml α-MSH solution,0.5％ CMC eye drop,and 1 ×10-3 mg/ml α-MSH+0.5％ CMC solution were topically administered twice a day (8:00,17:00) since the initial day of modeling according to grouping.Shirmer Ⅰ test (S Ⅰ t),breakup time of tear film (BUT) and corneal fluorescence staining were performed before and 7,14,21,28 days after the application of drugs.At 28 days following the administration of drugs,the eyeballs of the rats were collected.Hemotoxylin and eosin staining was employed to examine the morphology of corneas,and periodic acid schiff (PAS) staining was used to count the conjunctival goblet cells.This study protocol was approved by Experimental Animal Ethic Committee of Tianjin Medical University (SYXK 2009-0001),and the use and care of the rats complied with ARVO Statement.Results The S Ⅰ t and BUT values were significantly reduced,and the corneal fluorescence staining scores were significantly increased over time following modeling in the model control group (all at P＜0.01).No significant differences were found in the S Ⅰ t,BUT and corneal fluorescence staining scores between model control group and NaCl group at various time points (all at P＞0.05).At 7,14 and 21 days after intervention,the S Ⅰ t values were (4.800±0.789),(4.100±0.516) and (4.300±0.856) mm in the α-MSH+CMC group,which were considerably higher than (2.875 ±0.719),(2.375 ±0.619) and (2.532±0.957)mm in the NaCl group (all at P＜0.01).At 7 days after intervention,the BUT values were (4.938± 1.843) seconds and (5.000±1.491) seconds in the α-MSH group and α-MSH+CMC group,which were significantly higher than (3.250±1.000) seconds in the NaCl group (both at P＜0.01).The corneal fluorescence staining scores in the CMC group,α-MSH group and α-MSH+CMC group were significantly lower than that in the NaCl group,with the lowest score in the α-MSH +CMC group (all at P＜0.05).The thickening of corneal epithelial layer,corneal edema and arrangement disorder of corneal stroma were found in the model control group and NaCl group;while slight corneal edema and epithelial cell proliferation were exhibited in the α-MSH+CMC group by hemotoxylin and eosin staining.PAS staining showed that the number of goblet cells was much more in the CMC group,α-MSH group and α-MSH+ CMC group than that in the model control group and NaCl group (all at P ＜ 0.01).Conclusions The sole application of α-MSH or CMC alleviates ocular surface damage and morphological abnormality to certain extent,and the combination of α-MSH and CMC generates more effective protection in comparison with sole administration of α-MSH or CMC.The early application of the drugs plays an improvement role in tear secretion and tear film stability in dry eyes.

Efficacy of Carboxymethylcellulose and Hyaluronate in Dry Eye Disease: A Systematic Review and Meta-Analysis / 가정의학회지

BACKGROUND: The efficacy of two artificial tears, carboxymethylcellulose (CMC) and hyaluronate (HA), was compared in the treatment of patients with dry eye disease. METHODS: We conducted a systematic review and meta-analysis on randomized controlled trials in the PubMed, Embase, Cochrane Library, and ClinicalTrials.gov databases. The efficacy was compared in terms of the mean change from baseline in tear break-up time. The meta-analysis was conducted using both random and fixed effect models. The quality of the selected studies was assessed for risk of bias. RESULTS: Five studies were included involving 251 participants. Random effect model meta-analysis showed no significant difference between CMC and HA in treating dry eye disease (pooled standardized mean difference [SMD]=-0.452; 95% confidence interval [CI], -0.911 to 0.007; P=0.053). In contrast, fixed effect model meta-analysis revealed significant improvements in the CMC group when compared to the HA group (pooled SMD=-0.334; 95% CI, -0.588 to -0.081; P=0.010). CONCLUSION: The efficacy of CMC appeared to be better than that of HA in treating dry eye disease, although meta-analysis results were not statistically significant. Further research is needed to better elucidate the difference in efficacy between CMC and HA in treating dry eye disease.

Clinical Application and Effects of Sodium Hyaluronate-Carboxymethylcellulose (Guardix®) in Surgery of Ankle Fractures / 대한족부족관절학회지

PURPOSE: Reducing tenderness or pain on the ankle joint and improving the range of motion are thought to be possible using hyaluronate-based anti-adhesive agents. On the other hand, there are more aspects to be studied regarding the incidence of complications, such as resting pain, tenderness, and stiffness, after surgery. Therefore, the aim of this study was to prove the effectiveness of the agents after ankle fracture surgery. MATERIALS AND METHODS: Patients, who underwent open reduction and internal fixation surgery due to ankle joint fractures from June 2015 to May 2016, were studied prospectively. Thirty patients of them received a Guardix® injection during their surgeries and were included in the injection group. The other 30 patients were included in the control group. Postoperatively, tenderness on the scar, a delay in wound healing, and the active range of motion were evaluated at 2, 6, and 12 weeks after surgery. RESULTS: A significant difference in tenderness on the scar was observed 2 weeks after surgery. On the other hand, there was no significant difference at 6 and 12 weeks after the surgery. The agent-using group showed a 6.7% delay in wound healing and a 93.3% non-delaying. In the non-using group, the delay was 63.3%, while non-delay was 36.7% (p < 0.001). The group that underwent Guardix® usage showed an effective result in the visual analogue scale, which was statistically significant (p < 0.001). The result at 6 and 12 weeks after surgery showed a significant difference. CONCLUSION: Improvement was observed in the patients who underwent a Guardix® injection, regarding the range of motion, visual analog scale, and healing of the wound postoperatively.

Evaluation of treatment with carboxymethylcellulose on chronic venous ulcers

Abstract BACKGROUND: Among the chronic leg ulcers, venous ulcers are the most common and constitute a major burden to public health. Despite all technology available, some patients do not respond to established treatments. In our study, carboxymethylcellulose was tested in the treatment of refractory chronic venous ulcers. OBJECTIVE: To evaluate the efficacy of carboxymethylcellulose 20% on the healing of chronic venous ulcers refractory to conventional treatments. METHODS: This is an analytical, pre-experimental study. Thirty patients were included with refractory venous ulcers, and applied dressings with carboxymethylcellulose 20% for 20 weeks. The analysis was based on measurement of the area of ulcers, performed at the first visit and after the end of the treatment. RESULTS: There was a reduction of 3.9 cm2 of lesion area (p=0.0001), corresponding to 38.8% (p=0.0001). There was no interruption of treatment and no increase in lesion area in any patient. CONCLUSIONS: Carboxymethylcellulose 20% represents a low cost and effective therapeutic alternative for the treatment of refractory chronic venous ulcers. However, controlled studies are necessary to prove its efficacy.

Avaliação tecnológica em saúde: uso da carboximetilcelulose a 2% no tratamento das úlceras de perna / Health technology assessment: use of carboxymethylcellulose 2% in treating leg ulcers / Evaluación de tecnologías en salud: uso de la carboximetilcelulosa al 2% en tratamiento de las úlceras de pierna

Estudo de intervenção terapêutica do tipo ensaio clínico não controlado. Objetivou avaliar o custo e a efetividade da carboximetilcelulose 2% no tratamento das úlceras de perna. Foi aplicado instrumento de avaliação clínica em 20 pacientes de hospital universitário (Niterói-Rio de Janeiro), entre janeiro e outubro de 2010. Após 90 dias de tratamento, os resultados evidenciaram que no grupo A, feridas maiores que 100cm², houve redução de 15% da área lesional. No grupo B, feridas menores que 100cm², houve cicatrização total em 33,3% dos casos. Os custos foram proporcionais à área lesional; quanto maior a área, maior o custo do tratamento. Ao comparar o produto com outros géis do mercado nacional, identificou-se significativa redução do preço da carboximetilcelulose 2% (p<0,01) produzida na universidade. Conclui-se que a carboximetilcelulose 2% foi efetiva na redução do tamanho das úlceras, no aumento do tecido de granulação e na diminuição dos custos do tratamento.

This therapeutic intervention study took the form of an uncontrolled clinical trial. It aimed to evaluate the cost and effectiveness of carboxymethylcellulose 2% in treating leg ulcers. A clinical evaluation instrument was applied to twenty volunteers at a university hospital in Niteroi, Rio de Janeiro State, between January and October 2010. After ninety days of treatment, the results of group A (lesions larger than 15.5 sq.in.) showed 15% reduction in lesion area. In group B (wounds smaller than 15.5 sq.in.), healing was total in 33.3% of cases. The costs were proportional to ulcer area: larger areas entailed higher costs. When this product was compared with other gels on the Brazilian market, the carboxymethylcellulose 2% produced at the university was observed to yield significant cost reductions (p<0.01). In conclusion, carboxymethylcellulose 2% was effective in reducing leg ulcers, increasing tissue granulation area and lowering treatment costs.

Estudio de intervención terapéutica del tipo ensayo clínico no controlado. Objetivo: evaluar el costo y la eficacia de la carboximetilcelulosa 2% en el tratamiento de úlceras de piernas. Se utilizó un instrumento de evaluación clínica junto a 20 pacientes de un hospital universitario (Niterói, Río de Janeiro), entre enero y octubre de 2010. Después de 90 días de tratamiento, los resultados mostraron que, en el grupo A, de los que tenían heridas más grandes que 100 cm², hubo una reducción de un 15% de la zona lesionada. En el grupo B, de personas cuyas heridas eran menores que 100 cm², la cicatrización completa se observó en el 33,3% de los casos. Los costos fueron proporcionales a la zona lesionada, cuanto más extensa el área lesionada, más alto el costo del tratamiento. Cuando se comparan el producto con otros geles del mercado nacional, se reveló una reducción significativa del precio de la carboximetilcelulosa 2% (p<0,01) producida en la universidad. En conclusión, la carboximetilcelulosa 2% fue eficaz en la reducción del tamaño de las úlceras, en el aumento del tejido de granulación y en la reducción de los costos de tratamiento.

Effectiveness of papain gel in venous ulcer treatment: randomized clinical trial / Efetividade do gel de papaína no tratamento de úlceras venosas: ensaio clínico randomizado / Efectividad del gel de papaína en el tratamiento de úlceras venosas: ensayo clínico aleatorio

to assess the effectiveness of 2% papain gel compared to 2% carboxymethyl cellulose in the treatment of chronic venous ulcer patients.

avaliar a efetividade do gel de papaína a 2% comparado ao gel de carboximetilcelulose a 2% no tratamento de pacientes com úlceras venosas crônicas.

evaluar la efectividad del gel de papaína a 2% comparado con el gel de carboximetilcelulosa a 2% en el tratamiento de pacientes con úlceras venosas crónicas.

Comparative evaluation of effi cacy and safety of carboxymethylcellulose either alone or in combination with non-steroidal anti-infl ammatory drug in the treatment of dry eye in a tertiary care teaching hospital.

Background: Dry eye produces discomfort and reduced vision. The treatment of dry eyes has traditionally involved hydrating and lubricating artifi cial tears. The newer medications include non-steroidal anti-infl ammatory drugs (NSAIDs) for the treatment of dry eye disorders. This study was designed to compare the effect of topical carboxymethylcellulose (CMC) alone or in combination with topical NSAID for the treatment of dry eye in a tertiary care teaching hospital. Methods: A total of 60 patients diagnosed with dry eye were enrolled for a study period of 1 year. Patient of either sex (male/female), age between 18 and 70 years, and all diagnosed cases of dry eye in ophthalmology outpatient department were selected. Patients (n=60) were stabilized on CMC for 2 weeks and thereafter divided into two groups. Group I (n=30) received only topical CMC; Group II (n=30) received CMC+NSAID. The patients were followed up to 12 weeks. Diagnostic tests included Schirmer’s test and tear break up time (TBUT). Ocular Surface Disease Index (OSDI) was used for assessing the Quality of Life. Analysis was done using GraphPad InStat software. p<0.05 was considered signifi cant. Results: This was an open-label study revealing a mean age of 46.0±1.79 years. Females (56.67%) showed a signifi cantly higher prevalence of dry eye symptoms compared to males (43.33%). The mean duration of illness was 1.95±0.16 years. Schirmer’s test, TBUT test values and OSDI score in Group I and Group II at 0 and 12 weeks revealed signifi cant intragroup difference (p<0.0001). At 12 weeks intergroup comparison in Schirmer’s test value (p>0.05) and TBUT test value (p>0.05) showed no signifi cant difference while OSDI score revealed signifi cant difference (p<0.05). Burning, stinging, blurring of vision, photophobia, and hyperemia were among the common adverse effects seen. Conclusion: Both groups showed signifi cant improvement in Schirmer’s test and TBUT test value and OSDI score at the end of the study. Intergroup comparison showed a signifi cant difference with reference to OSDI score. Patients receiving NSAID reported more adverse effects.

Hemostatic effect of a medical polysaccharide hemostatic healing sponge on hemostasis of bleeding from femoral artery in pigs / 解放军医学杂志

Objective To study the effect of polysaccharide hemostatic healing sponge in controlling bleeding from femoral artery in miniature swines. Methods Thirty two miniature pigs were used to reproduce femoral artery hemorrhage model and then divided equally into four groups, and bleeding from femoral artery was treated by Medical Polysaccharide Hemostatic Healing Sponge (MP), carboxymethyl cellulose (CMC), gelatin sponge (GS) or medical gauze (MG), respectively. Hemostasis time, blood loss and vital signs of these pigs were observed and recorded. Results There were no group differences in mean arterial pressure. Hemostasis time was earlier and blood loss was less in MP, CMC and GS groups than in MG group, and the hemostatic effect was superior in CMC group to MP and GS groups and similar between the MP and GS groups. Conclusion MP or CMC dressing could effectively stop femoral artery bleeding, and its hemostatic effect is similar to or slightly better than GS in miniature pigs.

Efficacy and Safety of Sodium Hyaluronate with 1,4-Butanediol Diglycidyl Ether Compared to Sodium Carboxymethylcellulose in Preventing Adhesion Formation after Lumbar Discectomy

OBJECTIVE: Epidural injection of hyaluronic acid may prevent adhesion formation after spine surgery, but the compounds used to stabilize hyaluronidase could interfere with its anti-adhesion effects. The present study was conducted as a clinical trial to evaluate the efficacy and safety of an experimental medical gel in preventing adhesion formation. METHODS: This study was designed as a multicenter, randomized, double-blind, and comparative controlled clinical trial with an observation period of 6 weeks. Subjects were randomly assigned into two groups: group A with sodium hyaluronate + 1,4-butanediol diglycidyl ether (BDDE) and group B with sodium hyaluronate + sodium carboxymethylcellulose (CMC). Visual analogue scale (VAS) of back and leg pain and the Oswestry disability index (ODI) and scar score ratings were assessed after surgery. RESULTS: Mean scar grade was 2.37+/-1.13 in group A and 2.75+/-0.97 in group B, a statistically significant difference (p=0.012). VAS of back and leg pain and ODI scores decreased significantly from baseline to 3 and 6 weeks postoperatively in both groups (p0.3). The number of adverse reactions related to the anti-adhesion gels was not statistically different (p=0.569), but subsequent analysis of nervous adverse reactions showed group B was superior with a statistically difference (p=0.027). CONCLUSION: Sodium hyaluronate with BDDE demonstrated similar anti-adhesion properties to sodium hyaluronate with CMC. But, care should be used to nervous adverse reactions by using sodium hyaluronate with BDDE.

Efetividade do gel de papaína no tratamento de úlceras venosas: um ensaio clínico / Effectiveness of papain gel in the treatment of venous ulcers: a clinical trial

O estudo teve como objetivos avaliar a efetividade do gel de papaína a 2% comparado ao gel de carboximetilcelulose a 2% no tratamento de pacientes com úlceras venosas crônicas e analisar as características sociodemográficas, econômicas e clínicas destes pacientes, atendidos no Ambulatório de Reparo de Feridas do Hospital Universitário Antonio Pedro/UFF. Método: Ensaio clínico controlado e randomizado (ECCR) com tempo de seguimento de 12 semanas. A amostra consecutiva foi composta por 18 voluntários e um total de 28 úlceras venosas. A coleta de dados ocorreu de abril de 2013 a janeiro de 2014. O desfecho primário do estudo foi a redução da área da lesão e os desfechos secundários foram a redução de tecidos desvitalizados no leito da úlcera e a redução da quantidade de exsudato. A pesquisa foi submetida ao Comitê de Ética em Pesquisa da Faculdade de Medicina, do Hospital Universitário Antonio Pedro/UFF e aprovada com o número 196/98, CAAE nº 0154.0.258.000-08. Resultados: Os grupos foram homogêneos quanto às características sociodemográficas, econômicas e clínicas. A idade dos voluntários variou de 45 a 85 anos, com média de 61,94 anos. A maioria dos participantes se declarou casado (55,6%), com escolaridade até o ensino fundamental (66,7%), residente de São Gonçalo (44,4%) e aposentado (66,7%). Todos os voluntários possuíam insuficiência venosa crônica, 61,1% apresentava hipertensão arterial sistêmica e 11,1% diabetes mellitus. A maioria das úlceras venosas lesões teve início há mais de dez anos (53,6%) e a localização mais acometida foi a região maleolar (53,6%). Quanto à evolução das úlceras ao longo de 12 semanas de tratamento, o grupo papaína apresentou redução significativa da área das lesões, especialmente no período entre a 5ª e a 12ª semanas de tratamento, com duas úlceras cicatrizadas e aumento expressivo da quantidade de tecido de epitelização no leito das lesões. Nos dois grupos de tratamento houve redução significativa da quantidade de tecido desvitalizado e aumento de tecido de granulação da 1ª semana para a 12ª semana (p-valor < 0,05). Conclusão: o gel de papaína a 2% apresentou maior efetividade quanto à redução da área das lesões, entretanto se mostrou similar ao gel de carboximetilcelulose a 2% quanto à redução da quantidade de exsudato e de tecido desvitalizado. A partir dos resultados da pesquisa foram destacados os principais cuidados de enfermagem que podem auxiliar a assistência e o tratamento de pacientes com úlceras venosas crônicas

The study aimed to evaluate the effectiveness of papain gel at 2% compared to the carboxymethylcellulose gel at 2% in the treatment of patients with chronic venous ulcers and analyze sociodemographic, economic and clinical characteristics of these patients, treated at the Outpatient Wound Repair at Antonio Pedro University Hospital/UFF. Method: Randomized Controlled Trial (RCT) with 12 weeks of follow-up. The consecutive sample consisted of 18 volunteers and a total of 28 venous ulcers. The data collection occurred from April 2013 to January 2014. The primary end point was the decrease of the lesion area and the secondary endpoints were devitalized tissue decrease in the ulcer bed and the reduction of the amount of exudate. The study was submitted to the Ethics Committee of the Faculty of Medicine, University Hospital Antonio Pedro/UFF and approved with the number 196/98, CAAE n. 0154.0.258.000-08. Results: The groups were homogenous regarding sociodemographic, economic and clinical characteristics. The volunteers ages ranged from 45 to 85 years old, with a mean of 61.94 years old. Most participants declared married (55.6%), with schooling up to elementary school (66.7%), resident of São Gonçalo (44.4%) and retired (66.7%). All volunteers had chronic venous insufficiency, 61.1% had hypertension and 11.1% diabetes mellitus. Most venous ulcers injuries began more than ten years ago (53.6%) and the most affected location was the malleolar area (53.6%). Regarding the ulcers evolution over the 12 weeks of treatment, the papain group showed a significant decrease in the lesions area, especially in the period between the 5th and the 12th weeks of treatment, with two healed ulcers and significant increase in the amount of epithelialization tissue. In both treatment groups, there was a significant decrease in the amount of devitalized tissue and an increase of the granulation tissue from 1st week to the 12th week (p <0.05). Conclusion: The papain gel at 2% was more effective in reducing of the lesions area, however it showed similar to the carboxymethylcellulose gel at 2% in reducing the amount of exudate and devitalized tissue. From the results of the research were highlighted the main nursing care that can help the assistance and treatment of patients with chronic venous ulcers

Comparable bone healing capacity of different bone graft matrices in a rabbit segmental defect model

We compared the bone healing capacity of three different demineralized bone matrix (DBM) products applied using different carrier molecules (hyaluronic acid [HA] vs. carboxymethylcellulose [CMC]) or bone compositions (cortical bone vs. cortical bone and cancellous bone) in a rabbit segmental defect model. Overall, 15-mm segmental defects in the left and right radiuses were created in 36 New Zealand White rabbits and filled with HA-based demineralized cortical bone matrix (DBX), CMC-based demineralized cortical bone matrix (DB) or CMC-based demineralized cortical bone with cancellous bone (NDDB), and the wound area was evaluated at 4, 8, and 12 weeks post-implantation. DBX showed significantly lower radiopacity, bone volume fraction, and bone mineral density than DB and NDDB before implantation. However, bone healing score, bone volume fraction, bone mineral density, and residual bone area at 4, 8, and 12 weeks post-implantation revealed no significant differences in bone healing capacity. Overall, three DBM products with different carrier molecules or bone compositions showed similar bone healing capacity.

La saliva y sistemas adhesivos alternativos para prótesis total / Saliva and alternative adhesive systems for complete dentures

Las prótesis totales pueden presentar problemas biomecánicos relacionados con la retención y estabilidad, que pueden originarse a partir de errores del profesional durante la toma de impresión funcional de los tejidos, diseño y confección de las prótesis; además de errores durante la fase de laboratorio a cargo de los técnicos o simplemente a cambios biológicos que experimentan los tejidos subyacentes como la reabsorción ósea, atrofia de los maxilares y disminución del flujo salival. Esta última circunstancia es de principal preocupación, ya que la saliva tiene un papel importante en la retención de las prótesis como “adhesivo natural”, por lo que durante años se han propuesto diversos métodos alternativos de retención, especialmente sistemas adhesivos complementarios cuyas propiedades se han perfeccionado con la inclusión de otros compuestos como algunos polímeros sintéticos, agentes antimicrobianos, colorantes, aditivitos y preservativos; además se encuentran disponibles en diferentes presentaciones comerciales. El objetivo de esta revisión es exaltar las propiedades de la saliva como adhesivo natural y la posibilidad de mejorar la retención de las prótesis, cuando estas no poseen la capacidad de asegurar resultados deseados mediante sistemas adhesivos complementarios, que son una alternativa segura y efectiva, siempre que el odontólogo asuma la responsabilidad y la competencia de prescribir el tipo de adhesivo en relación con condiciones específicas del paciente para evitar situaciones indeseables como efectos sistémicos por la ingesta excesiva y prolongada de sales de zinc incluidas en algunas presentaciones comerciales de adhesivos para prótesis.

Complete dentures may show biomechanical problems related to retention and stability, which can arise from professional errors during functional tissue impression, as well as during prostheses design and manufacturing, in addition to errors during the laboratory phase by technicians or simply by biological changes of adjacent tissues, such as bone resorption, maxillaries atrophy, and decreased salivary flow. The latter is a circumstance of major concern because saliva plays an important role in prosthesis retention as a “natural adhesive”; therefore, various alternative retention methods have been suggested over time, especially in terms of complementary adhesive systems whose properties have been improved by including other compounds such as synthetic polymers, antimicrobial agents, colorants, additives, and preservatives, which are available in different commercial presentations. The goal of this review is to highlight the properties of saliva as a natural adhesive and the possibility of improving denture retention when it lacks the ability to guarantee the desired results by additional adhesive systems, which are a safe and effective alternative, provided that the dentist is responsible and competent enough to prescribe the right adhesive in relation to specific patient conditions to avoid undesirable situations such as systemic effects due to prolonged and excessive intake of zinc salts included in some commercial presentations of denture adhesives.

Tempo de reepitelização corneana com a instilação de colírio contendo hialuronato de sódio e carboximetilcelulose / Corneal reepithelialization time with instillation of eye drops containing sodium hyaluronate and carboxymethylcellulose

OBJETIVO: Avaliar o tempo de reepitelização corneana pós abrasão usando colírios comercialmente disponíveis, um contendo hialuronato de sódio a 0,4%, outro contendo carboximetilcelulose a 1%, e comparar com a reepitelização sem instilação de colírio. MÉTODOS: Foram utilizados 24 coelhos, nos quais foi feita a abrasão mecânica da córnea nos 8 mm centrais. Esses animais foram divididos em três grupos. O primeiro grupo recebeu um colírio disponível comercialmente contendo hialuronato de sódio 0,4%, o segundo recebeu um colírio contendo carboximetilcelulose 1% e o terceiro não recebeu nenhuma droga. A avaliação foi feita a cada 24 horas por meio da análise de fotografias digitais sob luz azul de cobalto e coramento das córneas com fluoresceína a 2%. O estudo das imagens foi feito pelo sistema de análise de imagens do Autocad 2009®. A análise dos dados foi feita comparando o tempo total de reepitelização da córnea e a cada 24 horas entre os três grupos. RESULTADOS: A velocidade de reepitelização do grupo que usou colírio contendo hialuronato de sódio foi em média 90 horas; o grupo que usou carboximetilcelulose apresentou média de 105 horas; e o grupo que não usou nenhum tipo de lubrificante apresentou média de 108 horas para total reepitelização. Houve uma melhor performance na reepitelização após 96 horas nas córneas dos coelhos que usaram os colírios lubrificantes, sendo essa diferença estatisticamente comprovada. CONCLUSÃO: O colírio contendo hialuronato de sódio 0,4% mostrou índice de eficácia maior que aquele contendo carboximetilcelulose 1%, e este maior eficácia que o controle. Os resultados encontrados neste estudo mostram que o uso de lubrificantes no processo de reepitelização são de extrema valia e devem ser usados de rotina na clínica oftalmológica.

PURPOSE: Evaluate the time of post-abrasion corneal re-epithelialization using commercially available eye drops, one of which containing 0.4% sodium hialuronate, and the other containing 1% carboxymethylcellulose, and compare them to the re-epithelialization without the drops. METHODS: 24 rabbits were used, which had the mechanical abrasion of the central 8 mm of their corneas done. These animals were divided in 3 groups. The first one received the drops containing 0.4% of sodium hialuronate, the second one received the drops containing 1% of carboxymethylcellulose and the third group did not receive any drugs. The evaluations took place every 24 hours through the analysis of digital pictures under cobalt blue light and coloring of the corneas with 2% fluorescein. The pictures were analyzed with the software Autocad 2009®. The data was analyzed through the comparison of the total re-epithelialization time among the three groups RESULTS: The time of total re-epithelialization of the group using sodium hialuronate was on average 90 hours and the group using carboxymethylcellulose 105 hours, while the group using no drugs was 108 hours. There was a better performance of those groups using the drops and this difference can be proved statistically. CONCLUSION: The drops containing 0.4% of sodium hialuronate showed a higher efficiency rate compared to the drops containing 1% of carboxymethylcellulose, which was higher than the control group. The results of the present study show that the use of lubricants in the process of re-epithelialization are extremely valid and must be used frequently in ophthalmologic clinic.