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M9650125.TXT
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1996-03-09
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Document 0125
DOCN M9650125
TI Haemophilus ducreyi elicits a cutaneous infiltrate of CD4 cells during
experimental human infection.
DT 9605
AU Spinola SM; Orazi A; Arno JN; Fortney K; Kotylo P; Chen CY; Campagnari
AA; Hood AF; Department of Medicine, Indiana University, Indianapolis,
USA.
SO J Infect Dis. 1996 Feb;173(2):394-402. Unique Identifier : AIDSLINE
MED/96162098
AB Human subjects were experimentally infected with Haemophilus ducreyi for
up to 2 weeks. Bacterial suspensions were delivered into the epidermis
and dermis through puncture wounds made by an allergy-testing device.
Subjects developed papular lesions that evolved into pustules resembling
natural disease. Some papular lesions resolved spontaneously, indicating
that host responses may clear infection. Bacteria were shed
intermittently from lesions, suggesting that H. ducreyi may be
transmissible before ulceration. Host responses to infection consisted
primarily of cutaneous infiltrate of polymorphonuclear leukocytes,
Langerhans cells, macrophages, and CD4 T cells of alpha beta lineage.
Expression of HLA-DR by keratinocytes was associated with the presence
of interferon-gamma mRNA in the skin. There was little evidence for
humoral or peripheral blood mononuclear cell responses to bacterial
antigens. The cutaneous infiltrate of CD4 cells and macrophages provides
a mechanism that facilitates transmission of human immunodeficiency
virus by H. ducreyi.
DE Adult Chancroid/*IMMUNOLOGY/MICROBIOLOGY/PATHOLOGY Chemotaxis,
Leukocyte/*IMMUNOLOGY CD4-Positive T-Lymphocytes/*IMMUNOLOGY
Enzyme-Linked Immunosorbent Assay Female Haemophilus
ducreyi/*IMMUNOLOGY/ISOLATION & PURIF Human HLA-DR Antigens/METABOLISM
Interferon Type II/METABOLISM Keratinocytes/METABOLISM Langerhans
Cells/IMMUNOLOGY Lymphocyte Subsets Lymphocyte Transformation
Macrophages/IMMUNOLOGY Male Middle Age Neutrophils/IMMUNOLOGY
Polymerase Chain Reaction RNA, Messenger/METABOLISM
Skin/*IMMUNOLOGY/MICROBIOLOGY/PATHOLOGY Support, U.S. Gov't, P.H.S.
JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).