Thymalfasin is a chemically synthesized version of thymosin alpha 1 that is identical to human thymosin alpha 1. Thymosin alpha 1 is an acetylated polypeptide. Thymosin alpha 1 is now approved in 35 developing countries for the treatment of Hepatitis B and C. It is also used to boost the immune response in the treatment of other diseases.
⑴慢性乙型肝炎(简称乙肝)。本品是用来治疗那些18岁或以上的慢性乙型肝炎患者,患者的肝病有代偿性,和有乙型肝炎病毒复制(血清HBV-DNA阳性),在那些血清乙肝表面抗原(HBsAg)阳性最少6个月,且有ALT升高的患者所做的研究显示,本品治疗可以产生病毒性缓解(血清HBV-DNA失去)和ALT水平复常,在一些做出应答的患者,本品治疗可除去血清表面抗原。本品与α-干扰素联用时可能比单用本品或单用干扰素增加应答率。
⑵作为免疫损害患者的疫苗增强剂。免疫系统功能受到抑制者,包括接受慢性血液透析和老年病患者,本品增强患者对病毒性疫苗,例如流感疫苗或乙肝疫苗的免疫应答。血液透析患者在接种流感疫苗后,应用本品作为佐剂者有65%患者产生抗流感病毒抗体,滴度水平增加4倍以上,安慰剂组只有24%患者做出此反应。
Stanford Univ Med Ctr, Stanford, California, United States
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