Reduction and enhancement of Plasmodium falciparum transmission by endemic human sera.
Transmission of Plasmodium falciparum from man to mosquito can be affected by human sera. Whereas serum-dependent reduction of transmission has been shown to be reproducible, there is limited evidence for enhancement of transmission. We aimed to assess the prevalence and reproducibility of transmission enhancement (TE) by human sera from different geographic areas (n = 642), in comparison with the capacity for transmission reduction (TR). The overall prevalence of TE (7%) was lower than that of TR (48%) and its effect generally weaker but reproducible in repeated measurements. TR but not TE showed a significant association with the presence of serum antibodies against Pfs48/45 and a non-significant trend to the presence of anti-Pfs230 antibodies.
van der Kolk
Mike
M
Radboud University Nijmegen Medical Centre, MMB 268, P.O. Box 9101, 6500 HB Nijmegen, The Netherlands. mikevanderkolk@tele2.nl
de Vlas
Sake J
SJ
Sauerwein
Robert W
RW
D000293:Adolescent; D000328:Adult; D000368:Aged; D000818:Animals; D000852:Anopheles / Q000469:parasitology*; D000913:Antibodies, Protozoan / Q000276:immunology*; D000953:Antigens, Protozoan / Q000276:immunology*; D002163:Cameroon; D002353:Carrier State / Q000276:immunology; D002648:Child; D002675:Child, Preschool; D005247:Feeding Behavior; D005260:Female; D006801:Humans; D007106:Immune Sera / Q000494:pharmacology*; D016778:Malaria, Falciparum / Q000517:prevention & control* / Q000635:transmission; D008297:Male; D008875:Middle Aged; D010963:Plasmodium falciparum / Q000276:immunology*; D013636:Tanzania
D000913:Antibodies, Protozoan; D000953:Antigens, Protozoan; D007106:Immune Sera