Posted by admin on Nov 1, 2011 in |
The objective of the paper is to study the effect of a permeation enhancer, sodium taurocholate on permeation of Ondansetron HCl from bioadhesive buccal tablet formulation by performing ex-vivo permeation experiments using porcine buccal mucosa. Optimized formulation has selected based on in-vitro drug release studies of bilayered bioadhesive buccal tablets. To the optimized formulation, 10mM sodium taurocholate was added to increase the permeation of poorly permeable ondansetron HCl. It is well known that natural surfactants like bile salts increase the permeability of drugs by perturbation of intercellular lipids. The results indicated that, from pure drug solution (5 mg/mL) about 88.63% cumulative percentage of drug permeated across porcine buccal mucosa with flux of 0.0235 mg.h-1cm-2. However, the optimized formulation with sodium taurocholate increased flux (0.0523 mg.h-1cm-2) and cumulative amount of drug permeated (65.44%) in comparison to formulation without permeation enhancer (38.45%, 0.0186 mg.h-1cm-2) with enhancement ratio of...
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Posted by admin on Nov 1, 2011 in |
Hypercholesteremia is one of the risk factors for coronary artery disease. The present study highlights the efficacy of Ayurvedic herbal formulation Cynodon dactylon (Bermuda grass) on histopathological study and DNA fragmentation analysis in experimentally induced hypercholesteremic rats. Four groups of rats were employed namely control, hypercholesterolemia rats (4% Cholesterol＋1% cholic acid), Cynodon dactylon treatment in hypercholesteremic rats and Cynodon dactylon alone treated rats. Results of DNA fragmentation was found to be greater in High cholesterol diet fed groups. Lesser fragmentation was found in high cholesterol diet + Cynodon dactylon treated group when compared to the high cholesterol diet group. Cynodon dactylon alone treated group is comparably similar to that of normal group (lesser fragmentation). Histopathological study of thoracic aorta of Cynodon dactylon treated group shows decrease in atherogenicity compared to untreated high cholesterol diet fed rats. The data demonstrated that Cynodon dactylon formulation was associated with hypolipidemic effects on the experimentally induced hypercholesteremic...
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Posted by admin on Nov 1, 2011 in |
In this research work, different blends of superdisintegrants with different ratio in fixed concentration were taken and placebo tablets were formulated and evaluated with a view to optimize a formula and concentration blends of superdisintegrants for Fast Disintegrating Tablets (FDT). In this research work three superdisintegrants, viz. Crosscarmellose, Crospovidone and Sodium Starch Glycolate were used in different ratio (1:1, 1:2, 2:1) in fixed concentration of 4% w/w in combination in each batch. Six blends were prepared and 3 batches of tablets of each formulation code blend were formulated and evaluated for pre-compression parameters like Compressibility, Hausner’s ratio, Bulk density, Tapped density and post-compression parameters like Hardness, Weight variation, Disintegration time, Dispersion time, Friability, Wetting time, Water absorption ratio. Based on results it revealed that the formulation code blend A3 which had Croscarmellose, Crosspovidone in ratio 1:2 (4%w/w) emerged as best blend of superdisintegrants for FDT formulation. To optimize the formula of A3 blend, Paracetamol FDT was formulated and evaluated using the concentration blend of A3; three batches were formulated...
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Posted by admin on Nov 1, 2011 in |
Citrullus colocynthis, belonging to the family of cucurbitaceae. It is a xerophytic desert plant, widely used for its medicinal purpose. In tribal areas it is used for the treatment of constipation, oedema, bacterial infection, cancer, diabetes and abortifacient. Present study is based on developing a protocol for plantlet regeneration from the nodal segment. The sterilized explants were inoculated in different concentrations of cytokinins and auxins. Among the various treatments, MS (1962) medium supplemented with BAP (2.0mg/l) gave the best shooting culture establishment. For shoot elongation MS medium supplemented with IBA (0.1 mg/l) was found to be best. In vitro elongated shoots rooted on MS medium supplemented with IBA (0.1 mg/l). The plantlets were hardened, acclimatized and transplanted in the field, where they showed 60% survival...
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Posted by admin on Nov 1, 2011 in |
The chemical composition of the essential oil of Hyptis suaveolens (L.) leaves from three different regions of Tamil Nadu was analysed by GC – MS method and the constituents of three different localities were compared. In all 12 compounds were identified and they were α-caryophyllene, α-pinene, α-thujene, camphene, D-limonene, sabinene, β-myrcene, 1, 8-cineole, γ-terpinene, α-terpinolene, α-terpineol, phenentherene. It was found that the constituents of the essential oil differed in quantities in the three different populations of Hyptis suaveolens (L.) which may due to local geographical...
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