Background: Taxanes constitute an important class of anti-cancer agents, which are widely prescribed for the management of cancers like breast, lung and ovaries. These agents belong to Biopharmaceutical Classification System (BCS) class IV, which are neither soluble in the aqueous systems nor permeable across the biological membranes. Objectve: Due to these concerns only, the oral bioavailabilities of these drugs are too low. Looking into these concerns, it was envisaged to develop co-crystals of docetaxel with syringic acid. Methods: For the preparation of co-crystals no single method is used. The methods range from spray drying, crystallization, ultrasonication and freeze drying to supercritical fluid methodologies. Results: The novel co-crystal not only improved the solubility and dissolution rates of the drug, but also resulted in improved pharmacokinetic profile. Conclusion: The present findings provide an economic and viable approach to improve the solubility and absorption profile of a drug, which is a vital component of the anticancer chemotherapy. Such studies provide a hope for the development of approaches to improve the solubility and permeability of drugs with challenges.
Over the last decades, cardiovascular diseases (CVD) effect is increasing very fast. This review article discuss the association between low level of 25-hydroxy vitamin and cardiovascular diseases. This review also tells us the direct effect of vitamin D on heart or on cardiovascular system may also be involved. Apart from regulating blood pressure, vitamin D also regulate endothelial and smooth muscle cell muscles, most studies support 25 (OH) vitamin D having protective effects on cardiovascular system. However this association of vitamin D and cardiovascular diseases is based on observation & ecological studies and thus is a matter of controversy. Adequate clinical data are not available to confirm these association. Unopposed activation of RAAS & generation of angiotensin promote arterial stiffing & endothelial dysfunction that proceed & contribute to the development of hypertension & also predictors of CVD risk.
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