Resultados: 6

Identifying Immune Correlates of Protection Against Plasmodium falciparum Through a Novel Approach to Account for Heterogeneity in Malaria Exposure

Clin. infect. dis; 66 (4), 2018
Background: A main criterion to identify malaria vaccine candidates is the proof that acquired immunity against them is associated with protection from disease. The age of the studied individuals, heterogeneous malaria exposure, and assumption of the maintenance of a baseline immune response can confound...

Multiplexing detection of IgG against Plasmodium falciparum pregnancy-specific antigens

PLos ONE; 12 (7), 2017
Background: Pregnant women exposed to Plasmodium falciparum generate antibodies against VAR2CSA, the parasite protein that mediates adhesion of infected erythrocytes to the placenta. There is a need of high-throughput tools to determine the fine specificity of these antibodies that can be used to identif...

Impact of age of first exposure to Plasmodium falciparum on antibody responses to malaria in children: a randomized, controlled trial in Mozambique

Malar. j. (Online); 13 (121), 2014
Background: The impact of the age of first Plasmodium falciparum infection on the rate of acquisition of immunity to malaria and on the immune correlates of protection has proven difficult to elucidate. A randomized, double-blind, placebo-controlled trial using monthly chemoprophylaxis with sulphadoxine-...

IgG against Plasmodium falciparum variant surface antigens and growth inhibitory antibodies in Mozambican children receiving intermittent preventive treatment with sulfadoxine-pyrimethamine

Immunobiology (1979); 216 (7), 2011
This study aimed to evaluate whether intermittent preventive treatment in infants with sulfadoxine-pyrimethamine (IPTi-SP) had an effect on the acquisition of IgG against Plasmodium falciparum variant surface antigens (VSA) and growth-inhibitory antibodies in Manhiça, Mozambique. In addition, we assesse...

AAge interactions in the development of naturally acquired immunity to plasmodium falciparum and its clinical presentation

PloS med; 4 (7), 2007
Background Naturally acquired malaria immunity has many determinants and, in the absence of immunological markers of protection, studies assessing malaria incidence through clinical endpoints remain an approach to defining immunity acquisition. We investigated the role of age in disease incidence and th...

RTS, S Vaccination Is Associated With Serologic Evidence of Decreased Exposure to Plasmodium falciparum Liver- and Blood-Stage Parasites

Mol Cell Proteomics; 3 (14), 2002
The leading malaria vaccine candidate, RTS,S, targets the sporozoite and liver stages of the Plasmodium falciparum life cycle, yet it provides partial protection against disease associated with the subsequent blood stage of infection. Antibodies against the vaccine target, the circumsporozoite protein, h...