Posted by admin on Nov 30, 2020 in |
Nigella sativa (N. sativa) (Family Ranunculaceae) is a widely used medicinal plant throughout the world. Seeds and oil have a long history of folklore usage in various systems of medicines and food. Extensive studies of literature has been revealed that N. sativa has to carry antidiabetic, anticancer, immunomodulator, analgesic, antimicrobial, anti-inflammatory, spasmolytic, bronchodilator, hepatoprotective, renal protective, gastro-protective, antioxidant antihypertensive, liver tonics, diuretics, digestive, anti-diarrheal, appetite stimulant, analgesics, anti-bacterial properties, etc. Due to its miraculous power of healing, N. sativa has got a place among the top-ranked evidence-based herbal medicines. In the present study, we are reporting the anti-obesity activity of successive solvent extract by ethanol, Nigella sativa. The ethanolic extract of Nigella sativa was orally administered in high fat, high cholesterol diet (HFHCD) obese rats for about 12-14 weeks. After four weeks of treatment, blood samples were collected for the estimation of serum lipids, glucose, Total Cholesterol, HDL, LDL, and Triglycerides. The treatment with Nigella sativa extracts markedly lowered total cholesterol, triglycerides in blood serum. It also showed positive...
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Posted by admin on Nov 30, 2020 in |
The aim of this study was to prepare a suitable mucoadhesive in-situ gel formulation of clotrimazole for the treatment of vaginal candidiasis. The in-situ gel-forming systems are viscous liquids that turn to a gel phase upon exposure to physiological conditions. The lower retention of conventional formulations in the vagina, mucoadhesive formulations would prolong the retention time. For this study mixture of poloxamer (Plx) 407 and 188 were used. 32 full factorial design was applied for the optimization. Selected independent variables were concentration of carbopol 974 (X1), and Hydroxypropyl methylcellulose (HPMC) E50 (X2) was added to in situ gel for improve the mucoadhesive properties of the formulation, and prolong the residence time in vaginal cavity. Selected dependent variables were viscosity (Y1) release at 1 h (Y2), release at 12 h (Y3). After the preparation of mucoadhesive in-situ gels, gelation temperature/time, viscosity, mucoadhesive strength, spreadability, drug content, in-vitro drug release, and in-vitro antimicrobial efficacy were determined. Based on the obtained results and according to desirability, it was found that gel prepared...
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Posted by admin on Nov 30, 2020 in |
Antimicrobial peptides are considered as promising and potential next-generation antibiotics on account of their broad spectrum of antimicrobial activity and unique mode of microbial killing. For therapeutic application, it is essential to consider the hemolytic or cytotoxic property of AMPs along with antimicrobial function. In the current study, an avian beta-defensin 7 (AvBD7) gene was identified from Corvus splendens. The predicted amino acid sequence showed the presence of β defensin core motif and three disulphide bridges. We analysed the interaction of wild and mutant analogues of mature Corvus AvBD7 dimer with neutral 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine (POPC) that mimics mammalian membranes using molecular dynamics simulation studies. Hydrophobic residues at the N-terminus of each monomer were found to provide stability in the dimeric form. In both monomer and dimer, Asp3 and Asp4 interact with Tyr40 and Ser41 thereby helping in maintaining a claw shape at the C-terminus. During simulation, we found that the C-terminus claw region of wild dimer remained intact than its mutant analogs, and also wild AvBD7 exhibited a greater propensity...
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Posted by admin on Nov 30, 2020 in |
Preparation and evaluation of dikamali gum-based microspheres of Flurbiprofen, needed a suitable bioanalytical method. In this direction, we report the development of a simple RP-HPLC method for the determination of Flurbiprofen in rabbit plasma samples by using the standard internal method. The method was carried out on RP C18 column, with a mixture of the buffer: acetonitrile (60:40) as the mobile phase. The linearity was found to be in the range of 83.90-99.45%. The half-life of drug was 4.7-5.7 h. The developed method was validated as per USFDA guidelines and used in the estimation of Flurbiprofen microspheres on oral administration in rabbits. It was observed that the Tmax and AUC of Flurbiprofen was 3 h, 114.24 mcg.hr/ml for the marketed formulation, and 9 h and 213.03 mcg.hr/ml for test formulation, respectively. The pharmacokinetic parameters of the test formulation showed delayed Tmax, decreased Cmax, and increased area under the curve (AUC) as compared to the reference formulation. This indicated that Flurbiprofen was not released significantly in the stomach and small...
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Posted by admin on Oct 31, 2020 in |
The vertebrate immune system is composed of numerous distinct and interdependent components, and it consists of both systemic and mucosal immune compartments, but the mucosal immune system which protects the body from the first encounter of pathogens. β-defensins are a group of cysteine-rich cationic antimicrobial peptides that play an antimicrobial roles in the immune systems of vertebrates. Vertebrate defensins can be classified into α-, β, and θ-defensins based on their cysteine disulphide bonding. In the present study, we report the expression level of the β-defensin- 3 in the small intestine of the zebrafish after a bacterial challenge with Staphylococcus aureus with 100% and 50% concentrations. The results revealed that the β-defensin-3 was highly upregulated in both 100% and 50% concentration of the bacterial pathogen, and it plays an important role in the innate and mucosal immunity in...
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