Antileishmanial Activity of Pyrazolopyridine Derivatives and Their Potential as an Adjunct Therapy with Miltefosine
作者:Devireddy Anand、Pawan Kumar Yadav、Om P. S. Patel、Naveen Parmar、Rahul K. Maurya、Preeti Vishwakarma、Kanumuri S. R. Raju、Isha Taneja、M. Wahajuddin、Susanta Kar、Prem P. Yadav
DOI:10.1021/acs.jmedchem.6b01447
日期:2017.2.9
against Leishmania donovani/BALB/c mice via the intraperitoneal route for 5 days and displayed >91 and >93% clearance of splenic and liver parasitic burden, respectively. Combination treatment of 6j with a subcurative dose of miltefosine (5 mg/kg) in BALB/c mice almost completely ameliorated the disease (>97% inhibition) by augmenting nitric oxide generation and shifting the immune response toward Th1
合成了一系列吡唑并(二氢)吡啶,并评估了其抗实验内脏利什曼病(VL)的抗疟药功效。在所有化合物中,6d和6j的抗细胞内amastigotes的活性均优于米非福星。通过腹膜内途径进一步研究了化合物6j(50 mg / kg / day)对抗腹腔利什曼原虫/ BALB / c小鼠5天,分别显示脾脏和肝脏寄生虫负担的清除率分别大于91%和93%。6j的联合治疗在BALB / c小鼠中亚有效剂量的亚甲福辛(5 mg / kg)几乎可以通过增加一氧化氮的产生并将免疫反应移向Th1来完全改善疾病(抑制率> 97%)。此外,研究6j对利什曼原虫前鞭毛体的影响后发现,它诱导了分子事件,例如线粒体膜电位的丧失,磷脂酰丝氨酸的外在化和DNA片段化,最终导致了该寄生虫的程序性细胞死亡。这些结果以及药代动力学研究表明6j可能是将VL作为米替福辛的辅助疗法治疗VL的有前途的先导。