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Infection and Immunity, August 1999, p. 3937-3946, Vol. 67, No. 8
Departments of
Microbiology1 and
Medicine,3 The University of Alabama at
Birmingham, Birmingham, Alabama, and Department of Preventive
Medicine, University of Kansas Medical Center, Kansas City,
Kansas2
Received 16 February 1999/Returned for modification 16 April
1999/Accepted 28 April 1999
Repeated infections with Neisseria gonorrhoeae are
common among patients attending sexually transmitted disease clinics.
We examined whether previous infections or site of infection altered the local and systemic antigonococcal antibody levels in males and
females. Antibodies against N. gonorrhoeae MS11 and the
patients' homologous infecting isolates were measured by enzyme-linked
immunosorbent assay. In general, the local and systemic immune
responses to gonococci were extremely modest. There was a slight
increase in serum immunoglobulin G (IgG) against the MS11 strain and
the homologous isolates in infected males. Levels of serum IgA1
antibodies against MS11 were slightly higher in infected than in
uninfected females. A history of previous infections with N. gonorrhoeae did not alter the antibody levels in patients with a
current infection, suggesting that immunological memory is not induced
by uncomplicated gonococcal infections. Antibody responses to infected
subjects' homologous isolates were observed in cervical mucus; IgA1
levels increased while IgG levels decreased. The decline in mucosal IgG
against the homologous isolates was less common in subjects having both rectal and cervical infections; otherwise, no effect of rectal involvement was observed. The absence of substantially higher antibody
levels to gonococci where there is infection at a site known to contain
organized lymphoid tissue suggests that the low levels of responses to
uncomplicated infections may not be due simply to an absence of
inductive sites in the genital tract. We propose that in addition to
its potential ability to avoid the effects of an immune response,
N. gonorrhoeae does not elicit strong humoral immune
responses during uncomplicated genital infections.
0019-9567/99/$04.00+0
Copyright © 1999, American Society for Microbiology. All rights reserved.
Limited Local and Systemic Antibody Responses to
Neisseria gonorrhoeae during Uncomplicated Genital
Infections
*
Corresponding author. Mailing address: Department of
Microbiology, BBRB Box 1, University of Alabama at Birmingham, 845 19th St. South, Birmingham, AL 35294-2170. Phone: (205) 934-1233. Fax: (205)
934-3894. E-mail: medm136{at}uabdpo.dpo.uab.edu.
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