期刊
JOURNAL OF INFECTIOUS DISEASES
卷 225, 期 7, 页码 1238-1247出版社
OXFORD UNIV PRESS INC
DOI: 10.1093/infdis/jiab484
关键词
glucose-6-phosphate dehydrogenase (G6PD); malaria; Plasmodium falciparum
资金
- Thailand Research Fund through the Royal Golden Jubilee PhD program, Chulalongkorn University [PHD/0116/2560]
- Thailand Science Research Innovation [RTA6280006]
- Mahidol University [RSA6280102]
- Research Career Development Grant of the Thailand Science Research and Innovation
This study is the first to observe blockage of invasion in long-term culture and potential enhanced removal of parasitized erythrocytes in erythrocytes from Viangchan and Mahidol G6PD-deficient individuals.
Blockage of invasion in long-term culture and potential enhanced removal of parasitized erythrocytes were observed for the first time in erythrocytes from Viangchan and Mahidol G6PD-deficient individuals. Background Protection against Plasmodium falciparum is observed in a population deficient in glucose-6-phosphate dehydrogenase (G6PD), particularly in African and Mediterranean regions. However, such protection remains unknown among G6PD-deficient individuals in Southeast Asia. Methods In this study, we assessed the invasion and maturation of P falciparum K1 in a culture of erythrocytes isolated from Thai subjects carrying Viangchan (871G > A) and Mahidol (487G > A). Results We found that the parasites lost their ability to invade hemizygous and homozygous G6PD-deficient erythrocytes of Viangchan and Mahidol variants in the second and third cycles of intraerythrocytic development. It is interesting to note that P falciparum parasites selectively grew in erythrocytes from hemi- and homozygous genotypes with normal G6PD activity. Moreover, externalization of phosphatidylserine upon P falciparum infection was significantly increased only in Viangchan hemizygous variant cells. Conclusions This study is the first to show that blockage of invasion in long-term culture and potentially enhanced removal of parasitized erythrocytes were observed for the first time in erythrocytes from Viangchan and Mahidol G6PD-deficient individuals.
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