期刊
JOURNAL OF INFECTIOUS DISEASES
卷 186, 期 10, 页码 1530-1534出版社
UNIV CHICAGO PRESS
DOI: 10.1086/344733
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资金
- NIAID NIH HHS [AI-30639] Funding Source: Medline
Antibody responses to salivary gland sonicate (SGS) from Lutzomyia longipalpis were investigated using serum samples from individuals living in an area where visceral leishmaniasis is endemic. Individuals were classified into 2 groups, according to the alteration of their responses to Leishmania chagasi antigen over the course of 6 months. Group 1 included children who experienced anti-L. chagasi seroconversion from negative to positive; group 2 included children who experienced delayed-type hypersensitivity (DTH) response to L. chagasi antigen conversion from negative to positive. Individuals who experienced seroconversion against L. chagasi antigens did not have increased anti-saliva antibody response, whereas those who developed a positive anti-L. chagasi DTH response had increased immunoglobulin (Ig) G, IgG1 and IgE anti-SGS antibody levels. Despite wide variation, serum samples from individuals in group 2 recognized more bands in SGS than did those from individuals in group 1. This simultaneous appearance of anti-saliva humoral response and anti-L. chagasi cell-mediated immunity supports the hypothesis that induction of immune response against SGS can facilitate induction of a protective response against leishmaniasis.
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