Thymalfasin
未知生产厂商
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.
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.
The mechanism of action of thymalfasin is not completely understood but is thought to be related to its immunomodulating activities, centered primarily around augmentation of T-cell function. In various in vitro assays, thymosin alpha 1 has been shown to promote T-cell differentiation and maturation; for example, CD4+, CD8+, and CD3+ cells have all been shown to be increased. Thymosin alpha 1 has also been shown to increase production of IFN-g, IL-2, IL-3, and expression of IL-2 receptor following activation by mitogens or antigens, increase NK cell activity, increase production of migratory inhibitory factor (MIF), and increase antibody response to T-cell dependent antigens. Thymosin alpha 1 has also been shown to antagonize dexamethasone-induced apoptosis of thymocytes in vitro. In vivo administration of thymosin alpha 1 to animals immunosuppressed by chemotherapy, tumor burden, or irradiation showed that thymosin alpha 1 protects against cytotoxic damage to bone marrow, tumor progression and opportunistic infections, thereby increasing survival time and number of survivors. Many of the in vitro and in vivo effects of thymosin alpha 1 have been interpreted as influences on either differentiation of pluripotent stem cells to thymocytes or activation of thymocytes into activated T-cells. Thymalfasin also has been shown in vitro to upregulate expression of toll like receptors (TLR) including TLR2 and TLR9 in mouse and human dendritic cells, as well as activate NF-kB and JNK/P38/AP1 pathways. Thymalfasin's activation of dendritic cells provides another possible pathway explaining thymalfasin's immunomodulatory and antiviral effects.
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。
每项发明一条，涵盖美国、欧洲、PCT 与中国的同族专利。
