Dewan Mitali, Sarkar Gunjan, Bhowmik Manas, Das Beauty, Chattoapadhyay Atis Kumar, Rana Dipak, Chattopadhyay Dipankar
Department of Polymer Science and Technology, University College of Science and Technology, University of Calcutta, 92 A.P.C. Road, Kolkata 700 009, India; Department of Chemistry, Shahid Matangini Hazra Govt. College for Women, Chakshrikrishnapur, Kulberia, Purba Medinipur, West Bengal -721649, India.
Department of Polymer Science and Technology, University College of Science and Technology, University of Calcutta, 92 A.P.C. Road, Kolkata 700 009, India.
Int J Biol Macromol. 2017 Sep;102:258-265. doi: 10.1016/j.ijbiomac.2017.03.194. Epub 2017 Apr 5.
The effect of gellan gum on the gelation behavior and in-vitro release of a specific drug named pilocarpine hydrochloride from different ophthalmic formulations based on poloxamer 407 is examined. The mixture of 0.3wt% gellan gum and 18wt% poloxamer (PM) solutions show a considerable increase in gel strength in physiological condition. Gel dissolution rate from PM based formulation is significantly decreased due to the addition of gellan gum. FTIR spectra analysis witnesses an interaction in between OH groups of two polymers which accounts for lowering in gelation temperature of PM-gellan gum based formulations. It is also observed from the cryo-SEM study that the pore size of PM gel decreases with an addition of gellan gum and in-vitro release studies indicate that PM-gellan gum based formulation retain drug better than the PM solution alone. Therefore, the developed formulation has the potential to be utilized as an in-situ ophthalmic drug carrier.
研究了结冷胶对基于泊洛沙姆407的不同眼科制剂中特定药物盐酸毛果芸香碱的凝胶化行为和体外释放的影响。0.3wt%结冷胶和18wt%泊洛沙姆(PM)溶液的混合物在生理条件下显示出凝胶强度显著增加。由于添加了结冷胶,基于PM的制剂的凝胶溶解速率显著降低。傅里叶变换红外光谱(FTIR)分析表明两种聚合物的羟基之间存在相互作用,这导致基于PM-结冷胶的制剂的凝胶化温度降低。低温扫描电子显微镜(cryo-SEM)研究还观察到,添加结冷胶后PM凝胶的孔径减小,体外释放研究表明,基于PM-结冷胶的制剂比单独的PM溶液能更好地保留药物。因此,所开发的制剂有潜力用作原位眼科药物载体。