NDLI: Effects of artemether, artesunate and dihydroartemisinin administered orally at multiple doses or combination in treatment of mice infected with Schistosoma japonicum

Content Provider	Springer Nature Link
Author	Li, Hong Jun Wang, Wei Li, You Zi Qu, Guo Li Xing, Yun Tian Tao, Yong Hui Wei, Jian Ying Dai, Jian Rong Liang, You Sheng
Copyright Year	2011
Abstract	Artemether and artesunate, derivatives of the antimalarial artemisinin, as well as their main metabolite, dihydroartemisinin, all exhibit antischistosomal activities. The purpose of the current study was to compare the effects of artemether, artesunate and dihydroartemisinin administered orally at multiple doses or combination in treatment of mice infected with Schistosoma japonicum. We carried out experiments with mice, infected with 40 cercariae of S. japonicum, and treated with artemether, aretesunate and dihydroartemisinin (all at a single dose of 300 mg/kg, and the dose of the mixed three drugs is also 300 mg/kg) at multiple doses or combination therapy on days 6–8 or 34–36 post-infection. Administration with artemether, artesunate or dihydroartemisinin for 3 successive days reduced total worm burdens by 79.5−86% (30.86 ± 4.98 of mean total worm burden in control), female worm burdens by 79.4−86.7% (11.29 ± 2.63 of mean female worm burden in control) (all P values <0.01 vs. control), depending on different treatment protocols given on days 6–8 post-infection. However, no differences were seen between each treatment group (all P > 0.05). While the same treatment was given on days 34–36 post-infection, total worm burden reductions of 73.8−75.8% were achieved (29.44 ± 3.36 of mean total worm burden in control), which were significant when compared with the untreated control group (all P values <0.01). In all different treatment groups, female worm reductions (ranging from 88.7% to 93.1%, while the mean female worm burden in control is 10.33 ± 1.80) were consistently higher than the total worm reductions, resulting always in significantly lower female worm burdens when compared to the corresponding control (all P values < 0.01). However, there were no significant differences found between each treatment group (all P values >0.05). It is concluded that artemether, artesunate and dihydroartemisinin can be used to control schistosomiasis japonica, as a strategy to prevent S. japonicum infection. Administration with artemether, artesunate and dihydroartemisinin at multiple doses or in combined treatment damages both juvenile and adult S. japonicum, without statistically significant differences among the three drugs at the same dose.
Starting Page	515
Ending Page	519
Page Count	5
File Format	PDF
ISSN	09320113
Journal	Parasitology Research
Volume Number	109
Issue Number	2
e-ISSN	14321955
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-05-28
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Microbiology Medical Microbiology Immunology
Content Type	Text
Resource Type	Article
Subject	Infectious Diseases Veterinary Parasitology Insect Science

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