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Am. J. Trop. Med. Hyg., 69(5), 2003, pp. 481-483
Copyright © 2003 by The American Society of Tropical Medicine and Hygiene

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SHORT REPORT: REQUIREMENT OF B CELLS FOR DELAYED TYPE HYPERSENSITIVITY–LIKE PATHOLOGY AFTER SECONDARY INFECTION WITH LEISHMANIA MAJOR IN RESISTANT C57BL/6 MICE

GREGORY K. DEKREY, JEREMY J. JONES, M. LAMINE MBOW, CLAUDIA I. BRODSKYN, AND RICHARD G. TITUS
Department of Biological Sciences, University of Northern Colorado, Greeley, Colorado; Department of Pathology, Colorado State University, Fort Collins, Colorado; Centocor, Incorporated, Infectious Diseases, Malvern, Pennsylvania; Centro de Pesquisa Gonçalo Moniz-FIOCRUZ/Bahia, Salvador, Bahia, Brazil

 

ABSTRACT

B cell-deficient C57Bl/6 (µMT) mice were resistant to Leishmania major after both primary and secondary parasite challenge. However, unlike in wild-type mice, secondary infection in µMT mice was not accompanied by a marked delayed type hypersensitivity-like response, and interferon-{gamma} (IFN-{gamma}) levels were approximately half of those in wild-type mice. These results suggest that B cells are involved in IFN-{gamma} production and the pathology of secondary infection.

Received July 10, 2003. Accepted for publication August 22, 2003.

Financial support: These studies were funded by the National Institutes of Health (grant AI-29955).

Authors’ addresses: Gregory K. DeKrey, Department of Biological Sciences, College of Arts and Sciences, University of Northern Colorado, 501 20th Street, Greeley, CO 80639, Telephone: 970-351-2493, Fax: 970-351-2335, E-mail: gregory.dekrey{at}unco.edu. M. Lamine Mbow, Centocor, Incorporated, Infectious Diseases, 200 Great Valley Parkway, Malvern, PA 19355, Telephone: 610-889-4643, Fax: 610-889-4623, E-mail: lmbow{at}cntus.jnj.com. Claudia I. Brodskyn, Centro de Pesquisa Gonçalo Moniz-FIOCRUZ/Bahia, Rua Valdemar Falcão 121, Salvador, Bahia, Brazil 40295-001, Telephone: 55-71-356-8782 Extension 2111, Fax: 55-71-356-2543, E-mail: brodskyn{at}cpqgm.fiocruz.br. Richard G. Titus, and Jeremy J. Jones, Department of Pathology, College of Veterinary and Biomedical Sciences, Colorado State University, Fort Collins, CO 80523-1671, Telephone: 970-491-1607, Fax: 970-491-0603, E-mail: rtitus{at}colostate.edu.




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[Abstract] [Full Text] [PDF]


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Copyright © 2003 by the American Society of Tropical Medicine and Hygiene.