Formulation And Development articles list

Dry powder injection of spironolactone was developed using lyophilization and hydrotropic solubilization method. It is fast acting medication in emergencies like refractory edema associated with heart failure and hepatic cirrhosis. The ultimate aqueous based powder prepared showed 892.85 and 378.57 times increased solubility of spironolactone with sodium salicylate and sodium benzoate as compared to its water solubility. Amongst six hydrotropic agents, the solubility was increased in the order sodium salicylate > sodium benzoate > nicotinamide > sodium ascorbate > urea > sodium acetate. IR graph showed shift of wavenumber of characteristic peaks. Lyophilization technique produced more stable product against different temperature cycles and stability parameters. Degradation was only about 0.45% at room temperature and it was more about 1.3% at higher temperatures. Haemolytic activities of lyophilized formulations observed were 8.54% to 96.85% for sodium salicylate based hydrotropic lyophilized system and 3.50 to 88.17% for sodium salicylate based hydrotropic lyophilized system.

Archana Mehrotra

In the present study nanoparticles of lomustine were fabricated using chitosan polymer crosslinked with different crosslinking agents like sodium tripolyphosphate and sodium hexametaphosphate. Different formulations of nanoparticles were prepared using different concentrations of crosslinking agents and polyethylene glycol 6000. The average particle size ranged between 112 nm to 942 nm. Zeta potential of nanoparticles ranged between 29.0 mV up to 56.0 mV. Encapsulation efficiency was variable from 58%-96%. The nanoparticles were solid spherical. In vitro drug release study was carried out in phosphate buffered saline solution pH 7.4 for 10 h. The analysis of regression values of Higuchi plot suggested diffusional mechanism and follows Fick's law of diffusion. Drug polymer interaction was absent as evidenced by FT-IR spectra and DSC thermograms. With polyethylene glycol inclusion shows interaction between lomustine and PEG. Cell viability assay (MTT Assay) showed that the lomustine nanoparticles were able to reduce the tumour cell proliferation and increased cell viability significantly (p< 0.05) as compared to pure drug in L 132 human lung cancer cell line

Archana Mehrotra