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논문 기본 정보

자료유형
학술저널
저자정보
Nagwa S. M. Aly (Okayama University) Hiroaki Matsumori (Okayama University) Thi Quyen Dinh (Okayama University) Akira Sato (Okayama University) Shin-Ichi Miyoshi (Okayama University) Kyung-Soo Chang (Catholic University of Pusan) Hak Sun Yu (Pusan National University) Fumie Kobayashi (Azabu University) Hye-Sook Kim (Okayama University)
저널정보
대한기생충학열대의학회 Parasites, Hosts and Diseases Parasites, Hosts and Diseases Vol.61 No.1
발행연도
2023.2
수록면
33 - 41 (9page)

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The discovery of new antimalarial drugs can be developed using asynchronized Plasmodium berghei malaria parasites in vivo in mice. Studies on a particular stage are also required to assess the effectiveness and mode of action of drugs. In this report, we used endoperoxide 6-(1,2,6,7-tetraoxaspiro [7.11] nonadec-4-yl) hexan-1-ol (N-251) as a model antimalarial compound on P. chabaudi parasites. We examined the antimalarial effect of N-251 against ring-stage- and trophozoite-stage-rich P. chabaudi parasites and asynchronized P. berghei parasites using the 4-day suppressive test. The ED50 values were 27, 22, and 22 mg/kg, respectively, and the antimalarial activity of N-251 was verified in both rodent malaria parasites. To assess the stage-specific effect of N-251 in vivo, we evaluated the change of parasitemia and distribution of parasite stages using ring-stage- and trophozoite-stage-rich P. chabaudi parasites with one-day drug administration for one life cycle. We discovered that the parasitemias decreased after 13 and 9 hours post-treatment in the ring-stage- and trophozoite-stage-rich groups, respectively. Additionally, in the ring-stage-rich N-251 treated group, the ring-stage parasites hindered trophozoite parasite development. For the trophozoite-stage-rich N-251 treated group, the distribution of the trophozoite stage was maintained without a change in parasitemia until 9 hours. Because of these findings, it can be concluded that N-251 suppressed the trophozoite stage but not the ring stage. We report for the first time that N-251 specifically suppresses the trophozoite stage using P. chabaudi in mice. The results show that P. chabaudi is a reliable model for the characterization of stage-specific antimalarial effects.

목차

Abstract
Introduction
Materials and Methods
Results
Discussion
References

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