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J Virol, February 1998, p. 1108-1114, Vol. 72, No. 2
Section of Infectious Diseases,
Received 17 June 1997/Accepted 23 October 1997
Adult BALB/c mice were orally inoculated with murine (strain EDIM),
simian (strain RRV), or bovine (strain WC3) rotavirus. Six or 16 weeks
after inoculation, mice were challenged with EDIM. At the time of
challenge and in the days immediately following challenge, production
of rotavirus-specific immunoglobulin A (IgA), IgG, and IgM by small
intestinal lamina propria lymphocytes (LPL) was determined by fragment
culture, and quantities of virus-specific antibodies at the intestinal
mucosal surface were determined by intestinal lavage. Mice immunized
with EDIM were completely protected against EDIM challenge both 6 and
16 weeks after immunization. Protection was associated with production
of high levels of IgA by LPL and detection of virus-specific IgA at the
intestinal mucosal surface. In addition, animals immunized and later
challenged with EDIM did not develop a boost in antibody responses,
suggesting that they were also not reinfected. We also found that in
mice immunized with nonmurine rotaviruses, (i) quantities of
virus-specific IgA generated following challenge were greater 16 weeks
than 6 weeks after immunization, (ii) immunization enhanced the
magnitude but did not hasten the onset of production of high quantities of virus-specific IgA by LPL after challenge, and (iii) immunization induced partial protection against challenge; however, protection was
not associated with either production of virus-specific antibodies by
LPL or detection of virus-specific antibodies at the intestinal mucosal
surface.
0022-538X/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.
Relative Importance of Rotavirus-Specific Effector
and Memory B Cells in Protection against Challenge
*
Corresponding author. Mailing address: Section of
Infectious Diseases, Abramson Research Center, The Children's Hospital
of Philadelphia, Room 1205A, 34th St. and Civic Center Blvd.,
Philadelphia, PA 19104. Phone: (215) 590-5152 or (215) 590-2186. Fax:
(215) 590-2025. E-mail: Moser{at}chop.email.edu.
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