Methods: Solvent casting method was used to prepare
patches using polymethyl methacrylate (PMMA) and Eudragit E100 (EE100) polymers, dimethylsulfoxide (DMSO) penetration enhancer, dibutylphthalate (DBP) plasticizer and Tween 80 surfactant. A 2(3) factorial design was used based on three variables (PMMA, EE100, DMSO). at two levels Second order polynomial equations indicating interplay of ingredients were obtained by factorial design using SigmaTech software for 1, 4, 8 and 20 h release data. so the design was extended to central composite design (CCD). The target formulation was obtained from contour plots and evaluated for various physicochemical parameters. including in-vitro dissolution studies.
Results: Curvature effect was observed in F1 to buy ERK inhibitor F8 formulations, highlighting the interplay of ingredients. The interaction term (X2X3) see more exhibited highest Sum of Squares SS ratio at 1, 4, and 8 h data with positive coefficients indicating interaction; and so extended to CCD. From contour plots target formulation, F19, was identified
and evaluated. The release data, were subjected to kinetic analysis, which followed Higuchi (diffusion) model (R-2 = 0.9886).
Conclusion: F19 yielded release profile nearer to the theoretical predictions with R-2 of 0.9888 and followed Higuchi kinetics. Thus, a diffusion-mediated carvedilol matrix patch was successfully developed.”
“This study investigated the predictors of chronic valvular disease in children with rheumatic carditis. The short- to mid-term follow-up records of 88 patients (mean age, 10.68 +/- A 2.5 years) with chronic
rheumatic heart disease were reviewed. The mean follow-up period was 2.95 +/- A 1.4 years. Valvular involvement completely improved for 24 of the patients (27%) during the follow-up period. The multivariate logistic regression analysis found initial left ventricular dilation to be a significant independent risk factor associated with the persistence of either valvular involvement or mitral regurgitation. Furthermore, persistence of mitral regurgitation was found to be strongly correlated Volasertib ic50 with cardiac murmur at admission. No significant correlation was detected between age, gender, severity of valvular involvements at initial evaluation, and chronic valvular disease. The majority of patients with rheumatic carditis had normal left ventricular systolic function. However, a significant proportion of patients had left ventricular dilation, reported in the medical literature to be associated with the severity of valve involvement. This study found no relation between initial severity of valve involvements and chronic valvular disease. For this reason, increased left ventricular end-diastolic diameter may be secondary to myocardial involvement independent of valvular regurgitation. The findings in this study also suggest that subclinic carditis had a better outcome than clinically evident carditis.