BACKGROUND: Malaria and human immunodeficiency virus (HIV) infection during pregnancy affect the transplacental transfer of antibodies against several pathogens from mother to fetus, although the effect of malaria and HIV infection on the transfer of antimalarial antibodies remains unclear. METHODS: Levels of total immunoglobulin G (IgG), immunoglobulin M (IgM), and IgG subtypes against the following Plasmodium falciparum antigens were measured in 187 pairs of mother-cord plasma specimens from Mozambique: 19-kDa fragment of merozoite surface protein 1 (MSP119), erythrocyte binding antigen 175 (EBA175), apical membrane antigen 1 (AMA1), and parasite lysate. Placental antibody transfer was defined as the cord-to-mother ratio (CMR) of antibody levels. RESULTS: Maternal malaria was associated with reduced CMR of EBA175 IgG (P = .014) and IgG1 (P = .029), AMA1 IgG (P = .002), lysate IgG1 (P = .001), and MSP1 IgG3 (P = .01). Maternal HIV was associated with reduced CMR of MSP1 IgG1 (P = .022) and IgG3 (P = .023), lysate IgG1 (P = .027) and IgG3 (P = .025), AMA1 IgG1 (P = .001), and EBA175 IgG3 (P = .001). Decreased CMR was not associated with increased adverse pregnancy outcomes or augmented risk of malaria in the infant during the first year of life. CONCLUSIONS: Placental transfer of antimalarial antibodies is reduced in pregnant women with malaria and HIV infection. However, this decrease does not contribute to an increased risk of malaria-associated morbidity during infancy.
BACKGROUND:Malaria and human immunodeficiency virus (HIV) infection during pregnancy affect the transplacental transfer of antibodies against several pathogens from mother to fetus, although the effect of malaria and HIV infection on the transfer of antimalarial antibodies remains unclear. METHODS: Levels of total immunoglobulin G (IgG), immunoglobulin M (IgM), and IgG subtypes against the following Plasmodium falciparum antigens were measured in 187 pairs of mother-cord plasma specimens from Mozambique: 19-kDa fragment of merozoite surface protein 1 (MSP119), erythrocyte binding antigen 175 (EBA175), apical membrane antigen 1 (AMA1), and parasite lysate. Placental antibody transfer was defined as the cord-to-mother ratio (CMR) of antibody levels. RESULTS:Maternal malaria was associated with reduced CMR of EBA175 IgG (P = .014) and IgG1 (P = .029), AMA1 IgG (P = .002), lysate IgG1 (P = .001), and MSP1 IgG3 (P = .01). Maternal HIV was associated with reduced CMR of MSP1 IgG1 (P = .022) and IgG3 (P = .023), lysate IgG1 (P = .027) and IgG3 (P = .025), AMA1 IgG1 (P = .001), and EBA175 IgG3 (P = .001). Decreased CMR was not associated with increased adverse pregnancy outcomes or augmented risk of malaria in the infant during the first year of life. CONCLUSIONS: Placental transfer of antimalarial antibodies is reduced in pregnant women with malaria and HIV infection. However, this decrease does not contribute to an increased risk of malaria-associated morbidity during infancy.
Authors: Sarah Boudová; Jenny A Walldorf; Jason A Bailey; Titus Divala; Randy Mungwira; Patricia Mawindo; Jozelyn Pablo; Algis Jasinskas; Rie Nakajima; Amed Ouattara; Matthew Adams; Philip L Felgner; Christopher V Plowe; Mark A Travassos; Miriam K Laufer Journal: Clin Vaccine Immunol Date: 2017-10-05
Authors: Sarah C Charnaud; Rose McGready; Asha Herten-Crabb; Rosanna Powell; Andrew Guy; Christine Langer; Jack S Richards; Paul R Gilson; Kesinee Chotivanich; Takafumi Tsuboi; David L Narum; Mupawjay Pimanpanarak; Julie A Simpson; James G Beeson; François Nosten; Freya J I Fowkes Journal: Sci Rep Date: 2016-02-10 Impact factor: 4.379
Authors: Anna Babakhanyan; Gabriel Loni Ekali; Arlene Dent; James Kazura; John Tamo Nguasong; Barriere Airy Yetgang Fodjo; Emile Keming Yuosembom; Livo Forgu Esemu; Diane Wallace Taylor; Rose Gana Fomban Leke Journal: Open Forum Infect Dis Date: 2016-05-10 Impact factor: 3.835