Posted by admin on May 1, 2012 in |
Four simple, rapid, precise, economical and accurate spectrophotometric methods have been developed for simultaneous analysis of Metoprolol succinate and Telmisartan in their combined dosage form. Method 1, First derivative simultaneous equation method (Vierodt’s method). It employs formation and solving of simultaneous equation using two wavelengths 230.2 nm (λmax of Metoprolol succinate) and 237 nm (λmax of Telmisartan) in first derivative spectra. Method 2, First derivative Q-Absorbance equation method. It involves, formation of Q-absorbance equation at 231.8 nm (isoabsorptive point) and 237 nm (λmax of Telmisartan) in first derivative spectra. Method 3, Absorbance correction method, involves measurement of absorbance at 296.6 nm for estimation of TEL and measurement of corrected absorbance at 223 nm for estimation of MET. Method 4, Combination of First derivative dual wavelength ,which uses the difference in absorbance at 282.4 nm and 284.6 nm for estimation of MET and zero crossing first derivative spectrophotometry involves measurement of amplitudes at 330 nm for estimation of TEL in first derivative spectra. Developed methods were validated according to ICH...
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Posted by admin on May 1, 2012 in |
Background/Aim: Endosulfan is a pesticide of organochlorine group uses by 55 % of farmers in Bihar. Present study aims to illustrate effect of Endosulfan on biochemical, hormonal and sub cellular anomalies of spermatozoa of mice and their restoration through root extract of Withania somnifera. Materials and Methods: Experimental mice were administered with endosulfan for eight weeks followed by eight weeks administration of Withania somnifera. Results: Endosulfan administered group show degenerated mitochondria and plasmamembrane. Degenerated microtubule were also observed with rudimentary central hub and dynein arm. While eight weeks Withania somnifera 1000 mg/kg/b.w/day administered group show greater degree of sub cellular restoration on mitochondria and nuclear membrane. Microtubules were almost normal in structure. Lipid peroxidation level were also restored toward normal after ashwagandha administration. Conclusion: These combined effect finally leading to restoration in structure of spermatozoa in mice. This is very effective in restoring male fertility by combating endosulfan...
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Posted by admin on May 1, 2012 in |
Lupeol, a pentacyclic triterpene, possesses diverse pharmacological and biochemical activities including anticancer and antioxidant effects. Abnormalities in the status of glycoconjugates and lipids in the cell results in malignant transformation. The aim of the present study was to investigate the protective effect of lupeol on cell surface glycoconjugates and lipids abnormalities during 7,12-dimethylbenz[a]anthracene (DMBA)-induced hamster buccal pouch carcinogenesis. Oral squamous cell carcinoma was developed in the buccal pouches of golden Syrian hamsters by treating with 0.5% DMBA in liquid paraffin, three times a week, for 14 weeks. The status of glycoconjugates and lipids were measured using specific colorimetric methods. We observed 100% tumor formation with marked abnormalities in the status of glycoconjugates and lipids in hamsters treated with DMBA alone. Oral administration of lupeol at a dose of 50mg/kg bw, completely prevented the formation of tumors and restored the status of glycoconjugates and lipids in hamsters treated with DMBA. The results of the present study thus suggest that lupeol has the potential to protect cell surface abnormalities during DMBA-induced...
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Posted by admin on May 1, 2012 in |
Churna preparations are an important and widely used form of Ayurvedic herbal formulations in India. These are prepared by mixing powdered form of single or mixture of several crude drugs meant to be dispensed as such. Since the quality of raw material plays an important role in the overall quality of a herbal formulation due to common practice of collecting and processing medicinal plants from different geographical sources and the fact presence of certain trace elements and heavy metals have a great significance in this matter, the present study is based on the screening of 19 popular herbal Churna preparations sold in the Indian market for the quantitative analysis of essential trace and toxic heavy metals by atomic absorption spectrometry. Heavy metals like Pb, Cd and trace metals like Ca, Mg, Al, Cu, Zn were determined using flame atomic absorption spectrometer (FAAS) and heavy metals such as As and Hg were determined by hydride generation technique (cold vapour atomic absorption spectrometery). The results reveal that among the trace (micronutrients)...
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Posted by admin on May 1, 2012 in |
Macrocyclic complexes of MnII, CoII, NiII and CuII using a macrocyclic ligand derived by the condensation of Trimethoprim and diethyl phthalate have been prepared and characterized by electronic, IR and NMR spectral studies as well as magnetic moment and conductivity. On the basis of spectral studies, an octahedral geometry has been proposed for all the...
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