- ICH GCP
- Registro de ensaios clínicos dos EUA
- Ensaio Clínico NCT00346346
Analysis of the Immune Response to the Malaria Parasite in Mali, West Africa
Longitudinal Analysis of the B-Cell Immune Response to Plasmodium Falciparum in Mali
This study will examine the immune response to the malaria parasite at the cellular level to better understand why people achieve natural immunity to the parasite only after multiple infections and why immunity diminishes rapidly in the absence of ongoing infection. The results of this study may provide insight into whether and how natural immunity can be improved upon by vaccination.
Healthy people 2-4 and 18-25 years of age who live in the village of Kambila, Mali, may be eligible for this 1-year study. Participants have a small blood sample collected from a vein in the arm and also from two finger pricks at the beginning of the study, then every 2 months for 6 months and at the end of the study (for a total of five samples). People who become ill with malaria are evaluated and treated by a physician. Those recovering from their first episode of malaria during the study period have another blood sample collection and two finger pricks (bringing to six the total number of samples collected).
Visão geral do estudo
Status
Condições
Descrição detalhada
Tipo de estudo
Inscrição (Real)
Contactos e Locais
Locais de estudo
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Bamako, Mali
- Malaria Research and Training Center
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Critérios de participação
Critérios de elegibilidade
Idades elegíveis para estudo
Aceita Voluntários Saudáveis
Gêneros Elegíveis para o Estudo
Descrição
INCLUSION CRITERIA - HEALTHY VOLUNTEERS AT ENROLLMENT:
- Males and females ages 2 to 10 years or 18 to 25 years.
- Will be living in Kambila for one year and available for 12 month follow-up.
- Willing to have blood specimens stored.
- Willingness of adult volunteer to participate in the study as evidenced by the completed informed consent document.
- Willingness of parent or guardian to have his or her child participate in the study as evidenced by the completed informed consent document.
EXCLUSION CRITERIA - HEALTHY VOLUNTEERS AT ENROLLMENT:
- Active bleeding or hematocrit less than or equal to 15 % (for both children and adults).
- Fever greater than 38 degrees C, or systemic illness at enrollment.
- Currently using anti-malarial medications.
- The following two exclusion items may not have occurred in the last 30 days: participation in a vaccine or drug trial, or use of corticosteroid or other immunosuppressive drugs.
- Current pregnancy or a plan to become pregnant during the one year study period. Pregnancy status will be determined at enrollment by urine dipstick, and at subsequent time points by self-report only.
- While on this protocol, if a subject enrolls in another study that requires the administration of experimental therapies (vaccines or medications), he/she may no longer participate in this protocol.
(Presence of P. falciparum parasitemia in the absence of symptoms at the time of screening is not exclusionary).
Plano de estudo
Como o estudo é projetado?
Colaboradores e Investigadores
Investigadores
- Investigador principal: Peter D Crompton, M.D., National Institute of Allergy and Infectious Diseases (NIAID)
Publicações e links úteis
Publicações Gerais
- Achidi EA, Perlmann H, Salimonu LS, Perlmann P, Walker O, Asuzu MC. A longitudinal study of seroreactivities to Plasmodium falciparum antigens in Nigerian infants during their first year of life. Acta Trop. 1995 May;59(2):173-83. doi: 10.1016/0001-706x(95)00076-q.
- ALLISON AC. Protection afforded by sickle-cell trait against subtertian malareal infection. Br Med J. 1954 Feb 6;1(4857):290-4. doi: 10.1136/bmj.1.4857.290. No abstract available.
- ALLISON AC. Glucose-6-phosphate dehydrogenase deficiency in red blood cells of East Africans. Nature. 1960 May 14;186:531-2. doi: 10.1038/186531a0. No abstract available.
Datas de registro do estudo
Datas Principais do Estudo
Início do estudo
Conclusão do estudo
Datas de inscrição no estudo
Enviado pela primeira vez
Enviado pela primeira vez que atendeu aos critérios de CQ
Primeira postagem (Estimativa)
Atualizações de registro de estudo
Última Atualização Postada (Real)
Última atualização enviada que atendeu aos critérios de controle de qualidade
Última verificação
Mais Informações
Termos relacionados a este estudo
Palavras-chave
Termos MeSH relevantes adicionais
Outros números de identificação do estudo
- 999906147
- 06-I-N147
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