The instant invention relates to a process for the preparation of a pharmaceutical composition in sustained-release tablet form comprising from 600 milligrams to 2400 milligrams of Pirfenidone (PFD), in such a way that the drug is bioavailable during an extended period of time of 12 hours from its administration. In this way, the anti-fibrotic and anti-inflammatory action of the drug Pirfenidone is optimized. Moreover, the instant invention offers advantages and a higher therapeutic efficacy compared to other pharmaceutical forms of Pirfenidone for oral administration and its therapeutic application in the regression of chronic renal failure secondary to primary glomerulosclerosis; it shows a better activity with regard to the reduction and/or regression of deleterious effects in breast capsular contracture observed after the surgical implantation of breast implants in humans and has an important anti-TNF-α and anti-TGF-β1 action for the treatment of hepatic fibrosis.
本发明涉及一种制备缓释片剂型药物组合物的工艺,该组合物含有 600 毫克至 2400 毫克的
吡非尼酮(PFD),在给药后的 12 小时延长期内,该药物可被
生物利用。这样,药物
吡非尼酮的抗纤维化和抗炎作用就得到了优化。此外,与其他口服
吡非尼酮药剂相比,本发明具有优势和更高的疗效,可用于治疗原发性肾小球硬化症继发的慢性肾功能衰竭;在减少和/或消除乳房植入物手术后观察到的乳房包膜挛缩的有害影响方面,本发明显示出更好的活性;在治疗肝纤维化方面,本发明具有重要的抗肿瘤坏死因子-α和抗肿瘤坏死因子-β1作用。