The invention provides the use of an optionally hydroxy-protected 4-hydroxy or hydroperoxy-3,5-dioxopyrazolidine or an equivalent wherein a pyrazolidine ring attached oxygen is replaced by a sulphur, or a physiologically acceptable salt thereof, for the manufacture of a medicament for use in therapy or prophylaxis. Additionally, the invention provides a method of combatting HIV infection which comprises administering to an HIV-infected patient a T-lymphocyte growth suppressing agent, preferably a pyrazolidinol, in an amount sufficient to suppress T-lymphocyte growth in said patient for a period sufficient to reduce the T-lymphocyte concentration in lymph nodes in said patient by at least 25 % said administration being repeated at intervals of at least 3 months.
本发明提供了使用可选的羟基保护的
4-羟基或羟过氧基-3,5-二氧代
吡唑烷或等效物(其中连接氧原子的
吡唑烷环被
硫代替),或其生理上可接受的盐,用于制备用于治疗或预防的药物。此外,本发明提供了一种抗击HIV感染的方法,该方法包括向HIV感染的患者施用T淋巴细胞生长
抑制剂,优选为
吡唑烷醇,其量足以在该患者中抑制T淋巴细胞生长,以使得至少25%的T淋巴细胞浓度在该患者的淋巴结中减少,该施用在至少3个月的间隔重复进行。