[Genetic epidemiology in the study of susceptibility/resistance to malaria in the human population].
The development of genetic epidemiology methods using recent human genetic map together with the growing availability of candidate genes have led to substantial advances in the identification of host genes in human malaria. Investigation of these genes has progressed along two complementary ways: 1) The search for genes influencing the severe malaria clinical phenotype by means of population based case-control studies which showed the protective role of several red cell genetic defects (sickle cell anemia, a-thalassaemia ...) and that some polymorphisms of the TNF-alpha promoter region could predispose to cerebral malaria; 2) The investigation of the genetic regulation of malaria-related biological phenotypes (infection levels, immune response) by means of familial studies which underlined the influence of the 5q31-q33 chromosomal region in the control of Plasmodium falciparum blood parasitemia and the role of major histocompatibility complex (MHC) and non-MHC genes in the regulation of humoral and cellular response to various malarial antigens. Ongoing studies will precise the role of these genes and probably reveal the existence of other genes not identified yet. The impact of these findings on the understanding of malaria pathogenesis and on the design of future preventive and therapeutic strategies should be considerable.
Abel
L
L
INSERM Unité 436, CHU Pitié-Salpêtrière, Paris, France. abel@biomath.jussieu.fr
D000755:Anemia, Sickle Cell / Q000235:genetics; D002895:Chromosomes, Human, Pair 5; D020022:Genetic Predisposition to Disease; D006801:Humans; D007113:Immunity, Innate; D008288:Malaria / Q000453:epidemiology* / Q000235:genetics* / Q000276:immunology; D009154:Mutation; D014409:Tumor Necrosis Factor-alpha / Q000235:genetics; D017085:alpha-Thalassemia / Q000235:genetics
D014409:Tumor Necrosis Factor-alpha