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In vivo antimalarial activity and pharmacokinetics of artelinic acid-choline derivative liposomes in rodents

  • Shuai Duan (a1), Ruili Wang (a1), Rongrong Wang (a1), Jiaqi Tang (a1), Xiaoyang Xiao (a1), Ning Li (a1), Wenju Guo (a1), Qingshan Yang (a1), Guolian Ren (a1) and Shuqiu Zhang (a1)...

Abstract

It is urgent to develop new antimalarial drugs with good therapeutic effects to address the emergence of drug resistance. Here, the artelinic acid-choline derivative (AD) was synthesized by dehydration reaction and esterification reaction, aimed to avoid the emergence of drug resistance by synergistic effect of artemisinins and choline derivative, which could compete with choline for rate-limiting enzymes in the phosphatidylcholine (PC) biosynthetic pathway. AD was formulated into liposomes (ADLs) by the thin-film hydration method. Efficacy of ADLs was evaluated by Peters 4-day suppression test. The suppression percentage against Plasmodium yoelii BY265 (PyBY265) in ADLs group was higher than those of positive control groups (dihydroartemisinin liposomes, P < 0.05) and other control groups (P ⩽ 0.05) at the doses of 4.4, 8.8, 17.6 µmol (kg·d)−1, respectively. The negative conversion fraction, recrudescence fraction and survival fraction of ADLs group were superior to other control groups. Pharmacokinetics in rats after intravenous injection suggested that ADLs exhibited higher exposure levels (indexed by area under concentration-time curve) than that of AD solution, artelinic acid liposomes or artelinic acid solution (P < 0.01). Taken together, ADLs exhibited promising antimalarial efficacy and pharmacokinetic characteristics.

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Authors for correspondence: Shuqiu Zhang, E-mail: shuqiu.zhang@sxmu.edu.cn; Guolian Ren, E-mail: glren2007@126.com

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Both authors had contributed equally to this work.

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In vivo antimalarial activity and pharmacokinetics of artelinic acid-choline derivative liposomes in rodents

  • Shuai Duan (a1), Ruili Wang (a1), Rongrong Wang (a1), Jiaqi Tang (a1), Xiaoyang Xiao (a1), Ning Li (a1), Wenju Guo (a1), Qingshan Yang (a1), Guolian Ren (a1) and Shuqiu Zhang (a1)...

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