1. Efficacy of antiretroviral compounds against Toxoplasma gondii in vitro.
- Author
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Wang, Jin-Lei, Elsheikha, Hany M., Li, Ting-Ting, He, Jun-Jun, Bai, Meng-Jie, Liang, Qin-Li, Zhu, Xing-Quan, and Cong, Wei
- Subjects
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TOXOPLASMA gondii , *ANTIRETROVIRAL agents , *HIV protease inhibitors , *SULFADIAZINE , *ANTIPARASITIC agents , *DRUG interactions , *HIV infections - Abstract
• Most antiretroviral compounds had no toxic effect on human foreskin fibroblast cells at 30 µM. • Of 44 tested antiretroviral compounds, 14 showed potency against Toxoplasma gondii. • Antiretroviral compounds did not affect the anti- T. gondii activity of sulfadiazine or pyrimethamine. The obligate intracellular parasite Toxoplasma gondii can infect nearly all warm-blooded animals, including humans. Although infection with this parasite is generally benign, severe illness may occur in infected individuals if their immunity becomes less competent, such as in human immunodeficiency virus (HIV)-infected patients. In this study, the inhibitory activity of 44 commonly used antiretroviral compounds was determined against T. gondii in vitro. Of the 44 tested antiretroviral compounds, 14 showed potency against T. gondii at IC 50 concentrations (concentration inhibiting T. gondii tachyzoite growth by 50%) ranging from 1.18 ± 2.21 µM (nelfinavir) to 18.89 ± 1.87 µM (trovirdine). Of the 14 potent antiretroviral compounds, 7 are HIV-1 protease inhibitors. This study also investigated whether co-administration of these 14 antiretroviral compounds interferes with the anti- T. gondii activity of existing anti- T. gondii drugs, namely sulfadiazine and pyrimethamine. The results showed no significant interaction between any of the 14 tested antiretroviral compounds and pyrimethamine or sulfadiazine. These results warrant investigation of whether administration of the lead antiretroviral drugs with highly potent anti- T. gondii activity to HIV patients may help to limit the occurrence of toxoplasmic encephalitis. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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