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Med."],"published-print":{"date-parts":[[2019,1]]},"abstract":"<jats:p> Artemisinin and its analogues (ARTs) are currently the most effective anti-malarial drugs, but the precise mechanism of action is still highly controversial. Effects of ARTs on Plasmodium genes expression are studied in our Lab. The overexpression of an interesting amidotransferase, NADH-dependent glutamate synthase (NADH-GltS) was found in treated by dihydroartemisinin (DHA). The increased expression occurred not only from global transcriptomics analysis on the human malaria parasite Plasmodium falciparum (P.\u00a0falciparum) 3D7 and gene expression screening on all of iron-sulphur cluster proteins from [Formula: see text]. 3D7 in\u00a0vitro but also from Plasmodium berghei (P.\u00a0berghei) ANKA in mice. Influence of DHA on NADH-GltS was specifically at trophozoite stage of P.\u00a0falciparum and in a dose-dependent manner below the effective doses. L-glutamine (Gln) and L-glutamate (Glu) are the substrate and product of NADH-GltS respectively. Azaserine (Aza) is specific inhibitor for NADH-GltS. Experimental data showed that Glu levels were significantly decreasing with DHA dose increasing but NADH-GltS enzyme activities were still remained at higher levels in parasites, and appropriate amount of exogenous Glu could significantly reduce anti-malarial action of DHA but excessive amount lost the above effect. Aza alone could inhibit proliferation of P. falciparum and had an additive effect in combination with DHA. Those results could suggest that: Glutamate depletion is one of the anti-malarial actions of DHA; overexpression of NADH-GltS would be a feedback pattern of parasite itself due to glutamate depletion, but not a direct action of DHA; the \u201cfeedback pattern\u201d is one of protective strategies of Plasmodium to interfere with the anti-malarial actions of DHA; and specific inhibitor for NADH-GltS as a new type of anti-malarial agents or new partner in ACT might provide a potential. <\/jats:p>","DOI":"10.1142\/s0192415x1950068x","type":"journal-article","created":{"date-parts":[[2019,9,5]],"date-time":"2019-09-05T22:50:17Z","timestamp":1567723817000},"page":"1325-1343","source":"Crossref","is-referenced-by-count":3,"title":["Effect of Dihydroartemisinin on <i>Plasmodium<\/i> NADH-Dependent Glutamate Synthase: The Implication in Malaria Management"],"prefix":"10.1142","volume":"47","author":[{"given":"Wenhui","family":"Xu","sequence":"first","affiliation":[{"name":"Research Center of 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