首页> 外国专利> ENHANCEMENT OF TRANSCORNEAL PERMEATION AND SUSTAINED RELEASE OF TIMOLOL MALEATE FROM DEVELOPED AND OPTIMIZED IN SITU GEL WITH BETTER SAFETY PROFILE

ENHANCEMENT OF TRANSCORNEAL PERMEATION AND SUSTAINED RELEASE OF TIMOLOL MALEATE FROM DEVELOPED AND OPTIMIZED IN SITU GEL WITH BETTER SAFETY PROFILE

机译:安全性更佳的原位胶体经优化制造后透皮的透皮渗透和持续释放的马来酸替莫洛尔

摘要

In the present invention, we have prepared pH triggered in situ gel of Timolol Maleate for the glaucoma treatment. The carbopol 974 P in a range of 0.15 - 0.45 % w/v effectively formed gel at physiological pH 7.4 where as HPMC K 15 M responsible for effectively viscosity enhancement in the range of 0.25-0.75 % w/v. The developed Timolol Maleate in situ gel contains 0.125 % w/v Timolol Maleate which is l/4 th dose of marketed formulation. The developed in situ gel showed effectively diffused drug upto 8 h whereas ex vivo transcorneal permeation study showed 0.5 % w/w EDTA as an effective permeation enhancer in Timolol Maleate permeability. The histolpathological study confirmed safety and non irritant profile of developed in situ gel. Table 1 : Composition of developed formulation Different batches of Timolol Maleate in situ gel Name of (%w/v) excipients Fl F2 F3 F4 F5 F6 F7 F8 F9 Timolol Maleate 0.125 0.125 0.125 0.125 0.125 0.125 0.125 0.125 0.125 Sodium Chloride 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.80 Carbopol 974P 0.15 0.15 0.15 0.30 0.30 0.30 0.45 0.45 0.45 HPMCK15M 0.25 0.50 0.75 0.25 0.50 0.75 0.25 0.50 0.75 Benzalkonium 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 chloride Water q.s. 100 100 100 100 100 100 100 100 100
机译:在本发明中,我们已经制备了马来酸替莫洛尔的pH触发原位凝胶用于青光眼治疗。浓度为0.15-0.45%w / v的carbopol 974 P在生理pH 7.4时有效地形成凝胶,其中HPMC K 15 M可有效地提高0.25-0.75%w / v的粘度。发达的马来酸Timolol原位凝胶包含0.125%w / v的马来酸Timolol,是市售制剂的1/4剂量。发达的原位凝胶显示药物可长达8小时有效扩散,而离体经角膜渗透研究显示0.5%w / w EDTA是马来酸Timolol渗透性的有效渗透促进剂。组织病理学研究证实了已开发的原位凝胶的安全性和无刺激性。表1:开发的制剂的组成不同批次的马来酸替莫洛尔原位凝胶赋形剂的名称(%w / v)F1 F2 F3 F4 F5 F6 F7 F8 F9马来酸替莫洛尔0.125 0.125 0.125 0.125 0.125 0.125 0.125 0.125 0.125氯化钠0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.80 0.80 Carbopol 974P 0.15 0.15 0.15 0.30 0.30 0.30 0.45 0.45 0.45 HPMCK15M 0.25 0.50 0.75 0.25 0.50 0.75 0.25 0.50 0.75苯扎氯铵0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02氯水100100100100100100100100100

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