Differential Antibody Responses to P. falciparum Glycosylphosphatidylinositol Anchors in Patients With Cerebral and Mild Malaria Running title: IgG to GPI and cerebral malaria
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The Use of Crude Plasmodium falciparum Antigens for Comparison of Antibody Responses in Patients with Mild Malaria vs. Cerebral Malaria
Background: Cerebral malaria (CM) is one of the major causes of death in African populations infected with Plasmodium falciparum. Only 1% of infected subjects develop CM. The reasons for these differences are not fully understood, but it is likely that the host humoral response against blood-stage antigens plays a role in protection from malaria, although the precise targets and mechanisms medi...
متن کاملAge-dependent impairment of IgG responses to glycosylphosphatidylinositol with equal exposure to Plasmodium falciparum among Javanese migrants to Papua, Indonesia.
Immune responses directed at glycosylphosphatidylinositol (GPI) anchors of Plasmodium falciparum may offer protection against symptomatic malaria. To independently explore the effect of age on generation of the anti-GPI IgG response, we measured serum anti-GPI IgGs in a longitudinal cohort of migrant Javanese children (6-12 years old) and adults (> or = 20 years old) with equivalent numbers of ...
متن کاملNeutralization of malaria glycosylphosphatidylinositol in vitro by serum IgG from malaria-exposed individuals.
Parasite-derived glycosylphosphatidylinositol (GPI) is believed to be a major inducer of the pathways leading to pathology and morbidity during Plasmodium falciparum infection and has been termed a malaria "toxin." The generation of neutralizing anti-GPI ("antitoxic") antibodies has therefore been hypothesized to be an important step in the acquisition of antidisease immunity to malaria; howeve...
متن کاملGlycosylphosphatidylinositol Anchors of Plasmodium falciparum : Molecular Characterization and Naturally Elicited Antibody Response That May Provide Immunity to Malaria Pathogenesis
Induction of proinflammatory cytokine responses by glycosylphosphatidylinositols (GPIs) of intraerythrocytic Plasmodium falciparum is believed to contribute to malaria pathogenesis. In this study, we purified the GPIs of P. falciparum to homogeneity and determined their structures by biochemical degradations and mass spectrometry. The parasite GPIs differ from those of the host in that they con...
متن کاملLack of an association between antibodies to Plasmodium falciparum glycosylphosphatidylinositols and malaria-associated placental changes in Cameroonian women with preterm and full-term deliveries.
Sequestration of Plasmodium falciparum parasites within the placenta often leads to an accumulation of macrophages within the intervillous space and increased production of tumor necrosis factor alpha (TNF-alpha), a cytokine associated with placental pathology and poor pregnancy outcomes. P. falciparum glycosylphosphatidylinositol (GPI) anchors have been shown to be the major parasite component...
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تاریخ انتشار 2010