Ion activated in situ gel system for ophthalmic delivery of moxifloxacin hydrochloride

Rapid precorneal elimination of drug is a major limitation of conventional ophthalmic formulations. An ion activated in situ gel forming systems of an antibacterial agent moxifloxacin hydrochloride for instillation as drops into eye undergoing a sol to gel transition in the cul-de-sac was formulated. Sodium alginate was used as the gelling agent in combination with hydroxypropylmethyl cellulose. Formulations were evaluated for gelling capacity, pH, in vitro release, rheological study, Draize eye irritation test and storage stability. Systems exhibited pseudoplastic rheology, evidenced by shear thinning with increase in shear stress and increased angular velocity. The in vitro release rate of moxifloxacin hydrochloride from gel decreased as an inverse function of polymer concentration. The optimized products were stable and non irritant. Equal amounts of sodium alginate and hydroxypropylmethyl cellulose exhibit encouraging rheological properties with therapeutically effective and non-irritant product. This in situ gel system can be a viable alternative to conventional eye drops.Colegio de Farmacéuticos de la Provincia de Buenos Aire

Vacuum foam dried sugar-phosphate amorphous mixtures for stabilization of doxorubicin hydrochloride

The objective of the present study was to stabilize doxorubicin hydrochloride in sugar-phosphate amorphous mixtures at ambient temperature by drying it with vacuum foam drying. Finished products were evaluated for foam characteristic, residual moisture content, reconstitution time, percent drug recovery and drug-excipient interactions. FTIR studies revealed existence of physical interaction of drug with sugar. Light microscopy showed formation of amorphous glass which was supported by the observations of XRPD analyses. The optimized composition in vacuum foam drying was processed by lyophilization and their stability was compared. Storage at ambient temperature for 6 months showed that stability of vacuum foam dried product was better than lyophilized products. The amount of residual moisture affected the stability of drug. The detailed study revealed lactose and sodium dihydrogen phosphate is best suited for stabilization of doxorubicin hydrochloride at room temperature.Colegio de Farmacéuticos de la Provincia de Buenos Aire

Design, development, and evaluation of docetaxel-loaded niosomes for the treatment of breast cancer

Abstract Background Docetaxel (DTX) has been used to treat numerous types of cancers. Poor solubility, lower bioavailability, and serious side effects limit its use in cancer treatment. The objective of the present research work was to develop DTX-loaded niosomes to overcome these issues and investigate the anticancer effect on breast cancer. Niosomes of DTX were prepared and evaluated to estimate particle size, surface potential, morphology by TEM, %EE, in vitro drug release, %hemolysis, in vitro cytotoxicity, and stability. The cytotoxicity effect of plain DTX and DTX-loaded niosomes was performed on MCF-7 cell lines. Results The mean particle size, zeta potential, and %EE of DTX-loaded niosomes were 244.9 nm, − 7.1 mV, and 97.43%, respectively. Besides, combining the DTX with polymers enhanced drug loading capacity. The TEM images confirmed spherical-shaped niosomes. The IR, DSC, and P-XRD studies indicate no chemical interaction between drug and excipients. The developed DTX niosomes showed a sustained release behavior and lower in vitro cytotoxicity when compared to plain DTX. Conclusion The current research work demonstrates the suitability of co-loading of DTX in niosomes as a promising approach to enhance the efficiency of DTX. Graphical Abstrac

Expulsion by Ionic Complexation: Benchmark Therapy for Atherosclerosis A Review

Ethylenediamine tetraacetic acid (EDTA) chelation therapy has been practiced since longtime for the treatment of cardiovascular diseases, alone or in combination with other treatments. It has been recommended as a harmless, relatively inexpensive and non-surgical method of restoring blood flow in atherosclerotic vessels. Ability of EDTA to form complex with heavy metals like calcium, lead, copper is used to remove calcium from arthrosclerosis plaques which ultimately improves the condition. It can be concluded that chelation therapy is emerging form of complementary or alternative medicine to surgery and can be used in safe manner. Still there is insufficient evidence to decide on the effectiveness or ineffectiveness of chelation therapy in improving clinical outcomes of patients with atherosclerotic cardiovascular disease