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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) Takaaki Kubota (Okayama University) Yuji Kurosaki (Okayama University) Duc Tuan Cao (Hai Phong University of Medicine and Pharmacy) Gehan A. Rashed (Benha University) Hye-Sook Kim (Okayama University)
저널정보
대한기생충학열대의학회 Parasites, Hosts and Diseases Parasites, Hosts and Diseases Vol.61 No.3
발행연도
2023.8
수록면
282 - 291 (10page)

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Despite the recent progress in public health measures, malaria remains a troublesome disease that needs to be eradicated. It is essential to develop new antimalarial medications that are reliable and secure. This report evaluated the pharmacokinetics and antimalarial activity of 1,2,6,7-tetraoxaspiro[7.11]nonadecane (N-89) using the rodent malaria parasite Plasmodium berghei in vivo. After a single oral dose (75 mg /kg) of N-89, its pharmacokinetic parameters were measured, and t<SUB>1/2</SUB> was 0.97 h, T<SUB>max</SUB> was 0.75 h, and bioavailability was 7.01%. A plasma concentration of 8.1 ng/ml of N-89 was maintained for 8 h but could not be detected at 10 h. The dose inhibiting 50% of parasite growth (ED<SUB>50</SUB>) and ED<SUB>90</SUB> values of oral N-89 obtained following a 4-day suppressive test were 20 and 40 mg/kg, respectively. Based on the plasma concentration of N-89, we evaluated the antimalarial activity and cure effects of oral N-89 at a dose of 75 mg/kg 3 times daily for 3 consecutive days in mice harboring more than 0.5% parasitemia. In all the N-89-treated groups, the parasites were eliminated on day 5 post-treatment, and all mice recovered without a parasite recurrence for 30 days. Additionally, administering oral N-89 at a low dose of 50 mg/kg was sufficient to cure mice from day 6 without parasite recurrence. This work was the first to investigate the pharmacokinetic characteristics and antimalarial activity of N-89 as an oral drug. In the future, the following steps should be focused on developing N-89 for malaria treatments; its administration schedule and metabolic pathways should be investigated.

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Abstract
Introduction
Materials and Methods
Results
Discussion
References

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