Posted by admin on Sep 1, 2012 in |
In quest of better anti-amoebic agents, quantitative structure-activity relationship (QSAR) studies were performed on a series of pyrazoline & dioxazoles derivatives with the help of PM5 calculations and geometry optimizations using CAChe software. Multiple Linear Regression (MLR) analysis was performed to derive QSAR models using the descriptors, molecular weight (MW), conformation minimum energy (ɛ), HOMO energy (eHOMO), shape index, basic kappa second order (k2), absolute hardness (h), electronegativity (c), electrophilicity index (ω), molar volume (MV), molar refractivity (MR), LogP (LP), parachor (Pc) and solvent accessibility surface area (SASA). The QSAR models equations of anti-amoebic agents have been developed by using maximum of seven descriptors, in which conformation minimum energy, shape index, molar volume and parchor were present have good predictive powers of correlation coefficients. These models can successfully predict the anti-amoebic activity of any newly discovered pyrazoline and dioxazole derivatives which can later be tested in...
Read More
Posted by admin on Aug 31, 2012 in |
Retraction Note : Shokri N, Azizi E, Akbari Javar H, Fouladdel Sh, Khalaj A, Dinarvand R. In vitro and in vivo evaluation of poly (caprolactone fumarate) nanoparticles. International Journal of Pharmaceutical Sciences and Research. 2012; 3(9):3106-3115. It has come to the attention of the IJPSR Editors that there are substantial overlaps between the text of the above article and the following papers. It has been pointed out that the above study appeared to contain a high level of similarity with two articles by the same authors published as below: Shokri N, Akbari Javar H, Fouladdel Sh, Khalaj A, Khoshayand M, Dinarvand R, Atyabi F, Nomani A, Azizi E. Preparation and evaluation of poly (caprolactone fumarate) nanoparticles containing doxorubicin HCI. Daru. 2011;19(1):12-22. PMID: 22615635. and Shokri N, Akbari Javar H, Fouladdel Sh, Khalaj A, Dinarvand R, Azizi E. Preparation and characterization of crosslinked and non-crosslinked polycaprolactone fumarate (PCLF) NPs as carriers for doxorubicin HCl. Afr J Pharm Pharmacol. 2011;5(7):797-805. Following an internal investigation, it was established that the studies were...
Read More
Posted by admin on Aug 1, 2012 in |
A rapid, specific and accurate isocratic HPLC method was developed and validated for the assay of abacavir sulfate in pharmaceutical dosage forms. The assay involved an isocratic – elution of abacavir sulfate in Grace C18 column using mobile phase composition consists of (38:62 v/v) of methanol and 10ml of potassium dihydrogen orthophosphate. The wavelength of detection is 255nm.The method showed good linearity in the range of 10-50.0mg/mL. The runtime of the method is 8 mins. The proposed method can be used for routine quality control samples in industry in bulk and in finished dosage forms. In present study, a rapid specific precise and validated HPLC method for the quantitative estimation of abacavir sulfate in pharmaceutical dosage forms has been reported. The developed method can be applied to directly and easily to the analysis of the pharmaceutical tablet preparations. The percentage recoveries were near 100% for given methods. The method was completely validated and proven to be rugged. The excipients did not interfere in the analysis. The results showed that...
Read More
Posted by admin on Aug 1, 2012 in |
The present manuscript describes simple, sensitive, rapid, accurate, precise and economical dual wavelength spectrophotometric method for the simultaneous determination of Ambroxol Hydrochloride and Desloratadine Hydrochloride in combined tablet dosage form. The principle for dual wavelength method is “the absorbance difference between two points on the mixture spectra is directly proportional to the concentration of the component of interest”. The method was based on determination of Ambroxol Hydrochloride at the absorbance difference between 253.2 nm and 258.5 nm and Desloratadine Hydrochloride at the absorbance difference between 301.2 nm and 314 nm. The linearity was obtained in the concentration range of 5 – 75μg/ml for both Ambroxol Hydrochloride and Desloratadine Hydrochloride. The method was successfully applied to pharmaceutical dosage form because no interference from the tablet excipients was found. The suitability of these methods for the quantitative determination of Ambroxol Hydrochloride and Desloratadine Hydrochloride was proved by validation and recovery study. The proposed methods were found to be simple and sensitive for the routine quality control application of Ambroxol Hydrochloride and...
Read More
Posted by admin on Aug 1, 2012 in |
A total of thirty endophytic fungi were isolated from leaves and twigs of Eucalyptus globulus and Eucalyptus citriodora. Among thirty endophytic fungal isolates, four (P3MT1, P3MT2, OP4MT2 and P7ML2) are consistently producing compounds which are inhibiting Pseudomonas aeroginosa, Mycobacterium smegmatis and Candida albicans even after 10 generations tested under dual culture, well diffusion and disc diffusion methods. P3MT1 and OP4MT2 are inhibiting even a filamentous fungi Penicillium chrysogenum. The fungal isolate OP4MT2 showed highest zone of inhibition (20 mm) against Penicillium chrysogenum among two test fungi. The crude ethyl acetate extract of P3MT1 isolate showed highest zone of inhibition against Candida albicans (19 mm) by both well and disc diffusion method when compared to other fungal isolates. Another four fungal isolates (P3ML1, P6MT1, P5MT1 and P2MT1) from the same set of thirty isolates showed positive for the secretion of amylase, protease and laccase enzymes in agar plate method. Two endophytic fungal isolates (P6MT1 & P2MT1) among thirty are able to oxidize guaiacol indicating the presence of Lignin degrading enzymes....
Read More
