Posted by admin on Oct 31, 2021 in |
Esmolol Hydrochloride belongs to the class II anti-arrhythmic drugs. Due to composite compositions and low reproducibility, challenges are still warranted for the systematic method development for related substances and identification of its acid degradation products. Development, validation and characterization of RP-HPLC stability-indicating method for the quantitative analysis of two impurities in Esmolol hydrochloride and its stress degradants. The validation of this method was achieved as per ICH Q2 (R1) guidelines with the optimized experimental conditions. To achieve the proposed method on C18 (250 mm × 4.6 mm, 5µ) column and the temperature was sustained at 30°C and run time was 12 min. The mobile phase consists of A–Acetonitrile, B–0.01N Potassium dihydrogen orthophosphate in water (pH=4.8). The injection volume of samples was 10μL, and UV detection was carried out at 221nm. Linearity ranges were covered 0.25-1.5 ppm for ASL-8123, ACC-9675 and Esmolol Hydrochloride. The newly developed method for separation of impurities along with the pure drugs was found to be capable of giving swift retention times while still preserving good...
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Posted by admin on Oct 31, 2021 in |
A reverse-phase liquid chromatography (LC) method was developed for the simultaneous estimation of enrofloxacin and its active metabolite ciprofloxacin residues in chicken meat. These two fluoroquinolones were extracted from homogenized tissues with phosphate buffer under acidic conditions, followed by acetonitrile. The isocratic LC analysis was performed on Phenonmenax, C18 RP column (250 × 4.6 mm, 5 μ) using a mobile phase composed of 0.025M potassium phosphate solution (pH 3.25) and acetonitrile in the ratio of 75:25 (v/v), at a flow rate of 0.500 ml/ min. Quantitation of enrofloxacin and its metabolite were performed using a PDA detector set at the wavelength of 277 nm. The temperature of the column was 300C, and the total run time was 20 min for the analysis of both drugs. The retention time was found to be 10 min for ciprofloxacin and 13 min for enrofloxacin. The r2 values for linearity studies were greater than 0.98, and the accuracy (% recovery) was greater than 88% for both the drugs. The linearity was observed in...
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Posted by admin on Oct 31, 2021 in |
Berberine, an isoquinoline alkaloid that has better anticonvulsant and antioxidant activities, results in less efficacy due to poor solubility, poor permeability, poor stability and poor drug delivery to the brain. Hence, this study aim at improving Anticonvulsant and Antioxidant activities of Berberine by formulating nanoparticles with three-factor two-level boxbehnken with design expert software 6.1. In this study, the particle size and drug release percentage were considered as dependent variables, whereas the concentration of HPMC, PEG and Sonication time was considered as independent variables. Similarly, sodium caprate was separately optimized by Franz diffusion study to enhance the permeability, and thus nanoparticles were formulated with solvent evaporation method. Prepared nanoparticles were characterized and evaluated. FTIR, DSC and the Computer-based drug interaction revealed that drug encapsulated with HPMC and PEG was compatible with each other. Developed nanoparticles were found to be below 500nm. Zeta potential of nanoparticles was -35.9mV which indicated that the nanoparticles were stable; MES study, Rotarod study, and biochemical study results revealed that the anticonvulsant activity and antioxidant activity...
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Posted by admin on Oct 31, 2021 in |
Introduction: In this present study, the heaptoprotective effect of an optimized herbal formula (HF) was evaluated against carbon tetrachloride (CCl4)-induced liver injuries in rats. Methods: In-vitro antioxidant activity of the HF was evaluated by reducing power, lipid peroxidation, and DPPH scavenging assays. Hepatoprotective activity of HF (100, 200 and 400 mg/kg b.w) was evaluated against CCl4-induced hepatic damage in rats. Serum enzymatic levels of serum glutamate oxaloacetate transaminase (AST), serum glutamate pyruvate transaminase (ALT), serum alkaline phosphatase (ALP), and Gamma-glutamyltransferase (γ-GT) were estimated along with an estimation of catalase (CAT), superoxide dismutase (SOD), Glutathione (GSH) and TBARS levels in liver tissues. The lipid profile was also examined. Furthermore, histopathological examination of the liver sections and p53 expression assay were performed to confirm and advocate the induction of hepatotoxicity as well as hepatoprotective efficacy. RESULTS: The HF exhibited strong in-vitro antioxidant activities in terms of reducing power, inhibition of lipid peroxidation, and DPPH radical scavenging. HF restored the significantly elevated serum enzymatic levels of AST, ALT, ALP and γ-GT in...
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Posted by admin on Oct 31, 2021 in |
Most lipids used in solubilizing poorly soluble drugs are synthetic or semi-synthetic. In this study, the African Baobab seed oil (natural oil) was investigated for its potential in solubilizing poorly soluble drugs in a microemulsion formulation. Oil was extracted from untreated seeds by hydraulic pressing. Physicochemical characteristics of the oil were determined. The solubility of Furosemide, Griseofulvin, Ibuprofen, and Mebendazole was determined in the seed oil, surfactants, and co-surfactants. The miscibility of the oil, surfactants, and co-surfactants was assessed. A ternary phase diagram was developed to determine the microemulsion zone. Formulations of drug incorporated microemulsions were prepared using the seed oil. The microemulsions were characterized by droplet size, pH, transmittance, in-vitro drug release, and stability. The oil from the seeds was golden yellow in appearance. It was free from disease-causing pathogens. Analysis of the oil constants revealed that the oil was good for use as a pharmaceutical excipient. Optimised composition of 15% oil, 75% surfactant and 10% water formed a clear and stable microemulsion which solubilised Furosemide (30 mg/ml),...
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