Posted by admin on Jun 30, 2017 in |
Ascidians are rich source of novel bioactive agents as potential source of therapeutic drugs. Evaluation of antioxidant potential of ascidians, Eudistoma viride and Didemnum psammathodes extracts was undertaken. In DPPH radical scavenging assay E. viride II showed 34% to 93% scavenging activity and D. psammathodes II showed 45% to 96% scavenging activity in different ascidian concentrations. In reducing power assay the ascidian fraction E. viride II and D. psammathodes II showed 2.3 and 2.23 reducing power in 100µgmL-1. In Hydroxyl (OH) radicals scavenging activities the ascidian E. viride II and D. psammathodes II showed high radical scavenging activity 96% and 98% at 100 µgmL-1 concentration. In H2O2 scavenging assay the ascidians fractions E. viride II and D. psammathodes II showed 78% and 89% of at 100µgmL-1 concentration. In nitric oxide radical scavenging activity, the ascidians fractions E. viride II showed 64% at 100µgmL-1 and D. psammathodes II showed 72% at 100µgmL-1 concentration. The finding throws light on the higher efficiency of scavenging activity of natural products improved to synthetic...
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Posted by admin on Jun 30, 2017 in |
Metronidazole is a class I drug in biopharmaceutics classification system (BCS) and widely used in Pakistan, various available brands in local markets along with innovator brand to serve a large population. In-vitro dissolution testing can be used as waiver for in-vivo bioequivalence studies of generic brand interchangeability for Class I drugs i.e., highly soluble and highly permeable. The objective of the study was to determine immediate release tablet dosage form of metronidazole to fulfil the requirements of 85% drug release in pH 1.2, 4.5 and 6.8 recommended by WHO. In this study physicochemical quality attributes, price comparison and dissolution studies were performed on three available brands of metronidazole 400 mg, one of them is innovator brand and the two others are test brands. The dissolution profiles were compared by using similarity factor (f2) that were analyzed by UV spectrophotometer at 278 nm wavelength. The test brands were very cheap in cost as compared to innovator brand but both the test brand were failed the dissolution test in all mediums...
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Posted by admin on Jun 30, 2017 in |
An approach to determine the relationship between independent process variables and their two level four factor partial factorial design was adopted, composite of experiment design was applied to optimize a tablet formulation of Tetrabenazine (TBZ) Tablets 25mg containing high percentage of Lactose Anhydrous, Sodium starch Glycolate, Magnesium Stearate and Starch / Lactose Ratio. The particle size distribution of Lactose Anhydrous is used as dependent variable and Sodium starch Glycolate, Magnesium Stearate and Starch / Lactose Ratio were used as independent variables for optimizing some tablets response parameters. Response parameters for final TBZ Tablets were percentage of TBZ dissolve at thirty minutes. Design of Experiments (DOE) is an organized effect on the response variable. 24 partial factorial designs were applied in this research work. The models were validated for accurate prediction of response characteristics and use to identify the optimum formulation. The results that an optimum TBZ 25mg tablets having a volume similar to commercial products can be produced by dry granulation process utilizing Lactose...
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Posted by admin on Jun 30, 2017 in |
Diabetes mellitus (DM) is one of the principal causes of death in the world. DM causes many diseases with different pathogenesis disturbing glucose, protein and lipid metabolism. The primary characteristic is elevated glucose, blood level, which may be due to deficiency in the secretion of insulin and / act. Fenugreek oil is covered to recover glucose levels, intolerance, and insulin sensitivity as compared to the diabetic group. It is claimed that there is less damage of β-cell of pancreatic islet after dosing of fenugreek oil in diabetic rats. The objective of the study was to formulate a nano formulation of fenugreek oil, so as to enhance the effectiveness of fenugreek oil in treating induced diabetes by intraperitoneal (IP) injection of streptozocin (45 mg / kg) in Wistar albino rats, since nano formulation is claimed to enhance the bioavailability of bioactive compounds. A nano-emulsion was developed by adopting emulsion phase inversion and emulsion titration technique. The nano-emulsion with droplet size with less than 100 nm in diameter was stabilized by...
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Posted by admin on Jun 30, 2017 in |
Perinatal hypoxia results in poor circulation in internal organs, causing damage to the intestinal mucosa. Here, we aimed to evaluate the role of endothelial vasoconstrictor function in the formation of the intestinal mucous barrier in low-birth-weight neonates with hypoxic-ischemic encephalopathy (HIE). We comparatively analysed the concentrations of specific intestinal protective markers, i.e., serum mucin 2 (MUC2), serum intestinal trefoil factor (ITF), and faecal human β-defensin 2 (HBD2), and a marker of endothelial activity, i.e., serum endothelin-1 (ET-1), in early of postnatal life in 8 infants with moderate/severe HIE (group 1), 14 neonates with mild HIE (group 2), and 20 control infants using standard enzyme-linked immunosorbent assays. Markers of intestinal mucosa activity were not differentially expressed between infants in groups 1 and 2. Mean total concentrations of ITF and HBD2 were higher in groups 1 and 2 than in the control group (p < 0.05). In contrast, MUC2 concentrations were lower in infants of groups 1 and 2 than in the control infants. ET-1 expression was higher in group 2...
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