Posted by admin on Nov 1, 2011 in |
Spectrophotometric methods have been developed for the assay of trazodone hydrochloride (TRH) in pure and pharmaceutical formulations. These method based on the formation of chloroform soluble ion-association complexes of TRH with bromphenol blue (BPB) and with chlorophenol red (CPR) in buffer of pH 2.0 (for BPB) and buffer of pH of 4 (for CPR) with absorption maximum at 420 nm and at 410 nm for BPB and CPR, respectively. Reaction conditions were optimized to obtain the maximum color intensity. The absorbance was found to increase linearly with increase in concentration of TRH, which was corroborated by the calculated correlation coefficient values (0.9996, 0.9945). The systems obeyed Beer’s law in the range of 0.2-14.5 and 0.2-14.1m g/ml for (BPB) and (CPR), respectively. Various analytical parameters have been evaluated and the results have been validated by statistical data. No interference was observed from common excipients present in pharmaceutical formulations. The proposed methods are simple, accurate and suitable for quality control...
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Posted by admin on Nov 1, 2011 in |
Mimusops elengi Linn. (Family: Sapotaceae) is a tree which is traditionally used against a number of diseases including ulcers, headache, dental diseases, wound and fever. In the present study crude methanolic extract of Mimusops elengi Linn. leaf was investigated for possible antioxidant, analgesic and cytotoxic activity. The extract exhibited statistically significant antioxidant activity in DPPH free radical scavenging and Nitric oxide scavenging test. The analgesic activity of the sample was studied using acetic acid induced writhing of white albino mice and hot plate test. The extract produced 45.61% and 63.85% (P<0.001) writhing inhibition at the doses of 250mg/kg and 500 mg/kg body weight respectively which is comparable to the standard drug diclofenac sodium was found to be 76.69% at a dose of 25 mg/kg body weight. In hot plate test the extract exerted significant (P<0.001) prolongation in the response of latency time to the heat stimulus. The cytotoxic activity of the extract was assessed by brine shrimp lethality bioassay as an indicator of toxicity in which LC50= 80μg/ml and...
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Posted by admin on Nov 1, 2011 in |
The Plant Flacourtia jangomas have shown considerable antibacterial and cytotoxicity properties. The extracts were found to have different levels of cytotoxicity properties in different concentration. The crude extract of the plant Flacourtia jangomas was subjected to in vitro microbiological screening for studying anti-microbial activity of the extract against a wide of Gram-positive and Gram- negative bacteria by disc diffusion method. The result so obtained was compared with that of a standard antibiotic, Amoxicillin. The extract shows good activity against Shigella shiga and Bacillus megaterium and moderate activity against Bacillus cerus and poor activity against E. coli. The Minimum Inhibitory Concentration (MIC) values of the plant extract investigated was 31.25 mg/ml and 125 mg/ml for Bacillus megaterium and E. coli respectively. For Cytotoxicity, brine shrimp lethality bioassay was used. We used Vincristine sulfate as a standard reference. The LC50 value of standard was 12.58...
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Posted by admin on Nov 1, 2011 in |
Solid lipid nanoparticles (SLNs) have been proposed as suitable colloidal carriers for delivery of drugs with poor bioavailability. The objective of this study was to develop and evaluate solid lipid nanoparticles of Cefpodoxime Proxetil (CP) for enhancement of bioavailability via its lymphatic absorption. Solvent evaporation technique was adopted to prepare Cefpodoxime Proxetil loaded SLN with Precirol ATO 5 as a carrier with narrow size distribution. The mean particle size, drug entrapment efficiency (%), zeta potential and long term physical stability were investigated in detail. Drug release from Cefpodoxime Proxetil- Solid lipid nanoparticles (CP-SLN) was studied using a Franz diffusion cell. A pharmacokinetic study was conducted on male rats after oral administration of CP and CP-SLN. It was found that the relative bioavailability of CP with SLNs was significantly increased as compared with oral CP suspension. FTIR and DSC study revealed that drug is completely encapsulated in lipid matrix. Dry powder for reconstitution was selected as dosage form for the oral administration of CP-SLNs. These results indicated that bioavailability of...
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Posted by admin on Nov 1, 2011 in |
The objective of the present study was to prepare and evaluate matrix microspheres system for simultaneous and sustained release of candesartan cilexetil and captopril for the management of nephritic syndrome, Ethyl cellulose was used as a retardant polymer and IR study showed better compatibility of it with both the drugs, the matrix microspheres were prepared by emulsion solvent evaporation method and the prepared microspheres were characterized for morphology, drug loading and micromeretical properties. The drug release was performed in pH-6.8. The prepared microspheres were spherical in shape and free flowing in nature, the drug loading capacity ranges from 62-86%, the matrix microspheres show extended release up to 6-8 h, thus, the matrix microspheres have a potential for the prolongation and simultaneous release of candesartan cilexetil and captopril for mitigation of nephritic...
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