CN1513473A - 包含阿德福韦和硒化合物的联合用药物 - Google Patents
包含阿德福韦和硒化合物的联合用药物 Download PDFInfo
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Abstract
一种治疗乙型肝炎的包含阿德福韦或其可药用衍生物、修饰物与硒化合物的联合用药物,所选用的硒化合物有亚硒酸钠,硒酸钠,硒酵母和硒蛋白.每单位剂量的配方中含有阿德福韦或其可药用衍生物、修饰物5~200毫克,硒含量为50~500微克的硒化合物。这种组合用药物既有较好的抗HBV病毒的作用,又有较好的保护肝细胞、防治肝纤维化的作用。
Description
技术领域 本发明属于医药技术领域,涉及一种治疗乙型肝炎的联合用药物。
背景技术 据估计全球约有3.5亿人长期感染乙肝病毒,其中75%生活在亚太地区,这些人中至少有四分之一将最终成为乙肝慢性感染及其并发症,如肝硬化,肝功能失代偿和肝癌。
目前在治疗乙肝方面尚无特效药物,抗乙肝病毒药物中使用最广泛的是拉米夫定,它属于核苷类抗病毒药,对乙型肝炎病毒HBV的复制有较强的抑制作用,拉米夫定虽然在治疗慢性乙肝方面疗效较好,但患者长时间使用会产生HBV聚合酶基因变异,而且使用疗程越长,变异发生率越高,从而产生耐药性,使病情反复,加剧和加速了肝纤维化的发生,甚至最终导致肝硬化和肝癌。
阿德福韦是近年来新开发成功的高效抗HBV病毒的核苷类似药物,临床研究表明它不仅对肝炎病毒具有显著的抑制作用,而且对野生型和拉米夫定抗药性HBV病毒株都有显著的治疗作用。
治疗病毒性乙肝要面临的主要问题不仅是要抗乙肝病毒和防止耐药性的发生,而且要保护肝细胞和防治肝纤维化。
发明内容 本发明的目的是提供一种治疗慢性乙肝的联合用药物(复方制剂),这种药物不仅具有高效迅速的抗病毒作用,促使FBVDNA快速转阴,而且还有保护肝细胞和防治肝纤维化作用。
为了达到上述目的,本发明采用新型抗病毒剂阿德福韦与含硒化合物联合用药物。
阿德福韦(adefovir)是一种新的核苷类似物,化学名称为9-[2-(膦酰基甲氧基)乙基]腺嘌呤,临床常使用其亲酯性口服前体药阿德福韦双特戊酰氧甲基酯(adefovir dipivoxil),它是阿德福韦的衍生物,具有广谱的抗病毒活性和更高的生物利用度,在体内可迅速转化为阿德福韦。
硒是人体必需的微量元素,近年来研究发现,慢性活动性肝炎、肝硬化、肝癌患者体内均呈现低硒现象,且硒缺乏程度与肝脏损害病程进展相关。硒是谷光甘肽过氧化酶GHS-Px活性中心的必须成份,GHS-Px在保护肝细胞免遭过氧化损害中起重要作用,研究资料表明,慢性活动性肝炎、肝硬化患者血硒含量显著低于健康者,因此适当补充硒,改善体内硒营养状态可以防止肝脏受到化学物质、急慢性炎症反应的影响时出现氧化应激状态,减轻肝脏损伤,以达到保肝和防治肝纤维化的目的。
本发明采用阿德福韦和硒化合物联合之药物,来达到抗乙肝病毒、保护肝脏细胞、防治肝纤维化的目的。本发明所选用的硒化合物有:亚硒酸钠(分子式Na2SeO3),硒酸钠(分子式Na2SeO4),硒酵母和硒蛋白。
本发明组合用药物的每单位剂量的含量如下:
阿德福韦 5~200毫克,
硒化合物 50~500微克(以硒化合物中硒含量计)。
应当说明以下几点:
(1)“每单位剂量”是指患者在常规用药基础上,每次(或每日)用药的剂量或者是每片(或每粒,每袋,每瓶)的含药剂量。
(2)阿德福韦可用其药物上可以接受的衍生物或修饰物来代替,例如阿德福韦双特戊酰氧甲基酯及其晶体、无定形固体等,以提高阿德福韦的口服生物利用度和制剂方便。
(3)由于硒酵母和硒蛋白中硒的含量是不确定的,硒化合物的配方用量以其中的硒含量为准,硒化合物的用量多少要符合硒含量在50~500微克范围。例如纯净物亚硒酸钠(Na2SeO3)中硒含量为45.66%,即1毫克亚硒酸钠含有456.6微克硒,0.767毫克亚硒酸钠含有350微克硒,0.5毫克亚硒酸钠合有228.3微克硒;再例如硒含量为0.1%的硒酵母中,300毫克硒酵母含有300微克硒;硒含量为0.05%的硒酵母中,600毫克硒酵母含有300微克硒。
(4)签于药物剂型和生产使用的需要,可以在药物配方中合理添加药用填充剂、赋形剂、崩解剂、粘合剂、PH值调节剂、矫味剂、助溶剂、抗氧剂等药用辅料,本发明组合药物可制成片剂、胶囊、颗粒、口服液、水针剂和粉针剂,各剂型的成品药中符合上述组份含量。由于采用了阿德福韦和硒化合物组合,本发明药物不仅具有抗HBV病毒,促使HBVDNA快速转阴,缩短治疗疗程,而且具有保护肝细胞和抗肝纤维化的积极效果。
具体实施方式
实施例一:
按下述方法用几种药用赋形剂配制成每片含阿德福韦双特戊酰氧甲基酯30mg的片剂。
配方:阿德福韦双特戊酰氧甲基酯 30克
亚硒酸钠 0.767克
乳糖 200克
微晶纤维素 50克
羧甲基淀粉钠 13克
乙醇 50ml
微粉硅胶 4克
硬酯酸镁 3克
制成 1000片
制备方法:将阿德福韦双特戊酰氧甲基酯、亚硒酸钠、乳糖、微晶纤维素和羧甲基淀粉钠在制粒机中混合均匀,然后加入乙醇制成软材,真空干燥后,过筛整理,再加入微粉硅胶和硬酯酸镁混合均匀压片即可。
实施例二:
配方:阿德福韦20毫克
亚硒酸钠0.5毫克
按上述配方采用恰当投药比例放大后,添加适当药用辅料可制成胶囊剂、片剂、颗粒剂、口服液等、水针剂和粉针剂等。
Claims (5)
1.包含9-[2-(膦酰基甲氧基)乙基]腺嘌呤或其可药用衍生物、修饰物与硒化合物的联合用药物。
2.根据权利要求1所述的组合用药物,其特征在于每单位剂量的联合用药物中9-[2-(膦酰基甲氧基)乙基]腺嘌呤或其可药用衍生物、修饰物的含量为5~200毫克,硒含量为50~500微克的硒化合物。
3.根据权利要求1所述的联合用药物,其特征在于9-[2-(膦酰基甲氧基)乙基]腺嘌呤衍生物优选阿德福韦双特戊酰氧甲基酯及其晶体、无定形固体,所选用的硒化合物是亚硒酸钠,硒酸钠,硒酵母和硒蛋白,优选亚硒酸钠。
4.根据权利要求1、2所述的组合用药物,其特征在于每单位剂量是指每次或每日的用药剂量,或者是每片,每粒,每包或每瓶的含药剂量。
5.根据权利要求1、2、3所述的组合用药物,其特征在于可根据需要添加药用辅料,将该联合用药物制成片剂、胶囊、颗粒、口服液、水针剂或者粉针剂,作为单一复方制剂施用。
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1895671B (zh) * | 2005-12-08 | 2012-11-28 | 淮北辉克药业有限公司 | 治疗病毒型肝病的复方制剂 |
CN104586882A (zh) * | 2015-02-10 | 2015-05-06 | 康珞生物科技(武汉)有限公司 | 亚硒酸钠在制备治疗或预防乙型肝炎病毒感染药物中的应用 |
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2003
- 2003-08-13 CN CNA031541267A patent/CN1513473A/zh active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1895671B (zh) * | 2005-12-08 | 2012-11-28 | 淮北辉克药业有限公司 | 治疗病毒型肝病的复方制剂 |
CN104586882A (zh) * | 2015-02-10 | 2015-05-06 | 康珞生物科技(武汉)有限公司 | 亚硒酸钠在制备治疗或预防乙型肝炎病毒感染药物中的应用 |
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