Posted by admin on Jul 31, 2020 in |
The present investigation deals with the assessment of neuroprotective effect Leucas aspera in streptozotocin (STZ) induced Alzheimer’s disease (AD) in rats. AD was induced by administering STZ (3 mg/kg, ICV) on day one and 3rd day after surgery. Surgery was performed on anesthetized rats with the help of the stereotaxic apparatus. STZ induced AD rats were treated with ethanolic extract of Leucas aspera (100, 200, and 400 mg/kg, p.o.) for 28 days. Effect of Leucas aspera root in AD rats was assessed by estimating the alteration in the behavior (Y maze apparatus and single trail passive avoidance) and biochemical parameter in the brain tissue {Oxidative stress parameters (SOD, CAT, and LPO), amyloid β peptide (Aβ) and acetylcholinesterase (AchE). Treatment with Leucas aspera shows significant (P<0.01) increased in the % of alteration in the behavior and step-through latency in Y maze task and single-trial passive avoidance test compared to AD rats. Leucas aspera significantly (P<0.01) decreases the AchE in the brain tissue compared to AD rats, whereas treatment with Leucas...
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Posted by admin on Jul 31, 2020 in |
Current investigation was aimed at designing a Rosuvastatin calcium loaded drug- in- adhesive patch (DIAP) to overcome the problems associated with the daily oral administration of the drug. The patches were prepared by solvent casting method using acrylate emulsion polymers like Covinax 525-78, Mowinyl 461 and Novacryl PSR 32, which served as sustained release matrix polymer and adhesive. Methocel K100M was added as a solubilizer whereas propylene glycol (PG), labrasol, transcutol, and polyethylene glycol 400 (PEG400) were tried as permeation enhancers for the drug- in- adhesive film. The combination of Novacryl –PEG 400 and Novacryl-Transcutol was further optimized by 32 factorial design to study the effect of two independent variables i.e. concentration of solubilizer and permeation enhancer on responses i.e. % drug release, tensile strength and peel adhesion strength. The effect of the solubilizer and permeation enhancer on the final formulation was studied. The % cumulative release of drug at the end of 24 h was found to be between 90-93%. The formulations also show tensile strength in the...
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Posted by admin on Jul 31, 2020 in |
In the present work, the aim was to prepare a self-emulsifying drug delivery system of poorly soluble analgesic, mefenamic acid to improve its solubility with a view to enhance its oral bioavailability. From the solubility studies the selected oil, surfactant and co-surfactant was soyabean oil; tween 80, span 20; glycerol. Blends of surfactant mixtures containing tween 80, span 20, and glycerol were prepared. Three ratios of Smix containing tween 80: span 20: glycerol viz. 1:0.25:1, 1:1:1, 2:2:1; were used to construct pseudo ternary phase diagram to select nine formulation composition. Nine self-emulsifying formulations of mefenamic were prepared and evaluated for optical transparency, low refractive index, uniformity index, low viscosity, and drug release. The best formulations in all aspects of the evaluation were subjected to stability testing. The optimized formulation has been found to have good physical stability and longest shelf life of 13.45 months under accelerated storage conditions with degradation rate constant 1.38 × 10-3...
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Posted by admin on Jul 31, 2020 in |
Dorzolamide is commonly used to treat glaucoma, damage in the eye often caused by abnormally high pressure in the eye. It is one of the carbonic anhydrase inhibitors which is effective in decreasing intraocular pressure by decreasing the production of the aqueous humor. The main objective of the study was to entrap dorzolamide in a novel nanovesicular carrier system (spanlastics) to ensure sustained and intravitreal delivery in eye to overcome the problem of frequent dosing. The Dorzolamide spanlastics prepared were checked on three factors, i.e., the ratio of Span 60: Tween 80, sonication time and stirring speed. The formulation was evaluated for various parameters such as the size of nano-vesicles, Polydispersity index, zeta potential, and entrapment efficiency. The mechanism involved destabilization of lipid bilayer of the cell, which in turn facilitates diffusion of a drug within the cell and increased bio-availability. Hence, Dorzolamide spanlastics may prove to be an effective formulation in...
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Posted by admin on Jul 31, 2020 in |
In Asian countries, roots, barks, stems, leaves, and fruits of plants belonging to the Morinda species are considered as valuable traditional herbs. They are used in folk medicine for the treatment of many diseases, including diabetes, high blood pressure, and cancer. Anti-tubercular and cytotoxic activities of Morinda citrifolia (noni) have been reported, but Morinda coreia has not been explored for these two activities to date. In the present study, a systematic investigation was carried out with the air-dried leaves of M. coreia by bio-assay guided fractionation by three different extraction methods including conventional solvent extraction (SE), microwave-assisted extraction (MAE) and ultrasound-assisted extraction (UAE) methods to identify the best method for extraction for bioactive fractions responsible for anti-mycobacterium and anticancer activities. The n-hexane fraction of M. coreia was found to be most with MIC values ranging from 125 µg/L for SE and to 62.5 µg/mL for UAE against Mycobacterium H37Rv. Similar results were obtained against MCF-7 cells with IC50 values 33.78 µg/mL for SE and 22.22 µg/mL for UAE. In...
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