ELISA HTLV retrovirus antibody reactivity associated with malaria and immune complexes in healthy Africans. 1985

R J Biggar, and P L Gigase, and M Melbye, and L Kestens, and P S Sarin, and A J Bodner, and P Demedts, and W J Stevens, and L Paluku, and C Delacollette

A serological survey of 250 outpatients in rural Zaire showed that the prevalence of antibody against HTLV-I, HTLV-II, and HTLV-III, as detected by enzyme-linked immunosorbent assay, correlated strongly with level of antibodies against Plasmodium falciparum. The age curve for the prevalence of antibody against these retroviruses and high titres of antibodies against P falciparum were similar. Tests with control sera obtained from HTLV-III seropositive homosexual men and American subjects repeatedly infected with malaria who had high antibody titres against P falciparum indicated that there was no cross-reactivity between P falciparum and these retroviruses. Immune-complex levels, but not IgG, IgM, or IgE levels, also correlated strongly with seropositivity in the ELISA HTLV-I and HTLV-III assay, although immune-complex-positive control samples were negative. Possible explanations include coincidental distribution paralleling malaria; similar mode of transmission; virus activation and/or enhanced antibody production due to the effect of malaria on the immune system; and false-positive reactivity in the ELISA assay due to cross-reactive antibodies or other unknown factors.

UI MeSH Term Description Entries
D008288 Malaria A protozoan disease caused in humans by four species of the PLASMODIUM genus: PLASMODIUM FALCIPARUM; PLASMODIUM VIVAX; PLASMODIUM OVALE; and PLASMODIUM MALARIAE; and transmitted by the bite of an infected female mosquito of the genus ANOPHELES. Malaria is endemic in parts of Asia, Africa, Central and South America, Oceania, and certain Caribbean islands. It is characterized by extreme exhaustion associated with paroxysms of high FEVER; SWEATING; shaking CHILLS; and ANEMIA. Malaria in ANIMALS is caused by other species of plasmodia. Marsh Fever,Plasmodium Infections,Remittent Fever,Infections, Plasmodium,Paludism,Fever, Marsh,Fever, Remittent,Infection, Plasmodium,Plasmodium Infection
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D010963 Plasmodium falciparum A species of protozoa that is the causal agent of falciparum malaria (MALARIA, FALCIPARUM). It is most prevalent in the tropics and subtropics. Plasmodium falciparums,falciparums, Plasmodium
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D004797 Enzyme-Linked Immunosorbent Assay An immunoassay utilizing an antibody labeled with an enzyme marker such as horseradish peroxidase. While either the enzyme or the antibody is bound to an immunosorbent substrate, they both retain their biologic activity; the change in enzyme activity as a result of the enzyme-antibody-antigen reaction is proportional to the concentration of the antigen and can be measured spectrophotometrically or with the naked eye. Many variations of the method have been developed. ELISA,Assay, Enzyme-Linked Immunosorbent,Assays, Enzyme-Linked Immunosorbent,Enzyme Linked Immunosorbent Assay,Enzyme-Linked Immunosorbent Assays,Immunosorbent Assay, Enzyme-Linked,Immunosorbent Assays, Enzyme-Linked
D005260 Female Females
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000293 Adolescent A person 13 to 18 years of age. Adolescence,Youth,Adolescents,Adolescents, Female,Adolescents, Male,Teenagers,Teens,Adolescent, Female,Adolescent, Male,Female Adolescent,Female Adolescents,Male Adolescent,Male Adolescents,Teen,Teenager,Youths
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults

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