Antibody hyporesponsiveness in resistant BALB/cJ mice intracorneally infected with Pseudomonas aeruginosa.
Six- to eight-week-old BALB/cJ (and BALB/cPi) mice were found able to restore corneal clarity within 3 to 4 weeks after intracorneal infection with Pseudomonas aeruginosa strain 19660. However, enzyme-linked immunosorbent assay (ELISA) for serum immunoglobulins directed specifically against P. aeruginosa indicated that the mice were initially non- or hypo-responsive for IgG and IgA over the 4-week holding period. Low IgM titers could be detected 1 week after infection, but tended to decrease with time. When the mice were re-infected by using the contralateral control eye, then the serum IgG levels began to gradually increase as the time interval following the secondary infection increased from 1 to 3 weeks. Re-infected mice did not show a significantly increased rate of corneal clarity restoration with time, when compared to the corneas of mice receiving only a primary infection despite the presence of serum antibodies specific to P. aeruginosa. When congenic mice of the BALB/c background carrying the DBA/2N Idh/Pep-3 locus found on chromosome 1 were intracorneally infected, they tended to restore corneal clarity at approximately the same rate as the BALB/cJ mice. However, the congenic mice mounted a faster and substantially greater magnitude of serum IgM and IgG response during the primary infection than BALB/cJ mice receiving either a primary and/or secondary infection. IgG subclass studies with the congenic mice indicated that serum IgG1, and IgG2a to a lesser extent, were the primary immunoglobulins produced and no major shift in subclass was noted with time during the primary infection.(ABSTRACT TRUNCATED AT 250 WORDS)
Berk
R S
RS
Department of Immunology, Wayne State University School of Medicine, Detroit, MI 48201.
Preston
M
M
Montgomery
I N
IN
Hazlett
L D
LD
Tse
H Y
HY
D000818:Animals; D000907:Antibodies, Bacterial / Q000096:biosynthesis*; D003316:Corneal Diseases / Q000276:immunology* / Q000382:microbiology / Q000473:pathology; D004797:Enzyme-Linked Immunosorbent Assay; D015818:Eye Infections, Bacterial / Q000276:immunology*; D005260:Female; D007074:Immunoglobulin G / Q000096:biosynthesis; D007075:Immunoglobulin M / Q000096:biosynthesis; D051379:Mice; D008807:Mice, Inbred BALB C / Q000276:immunology*; D011552:Pseudomonas Infections / Q000276:immunology*; D011550:Pseudomonas aeruginosa / Q000276:immunology*; D013045:Species Specificity
D000907:Antibodies, Bacterial; D007074:Immunoglobulin G; D007075:Immunoglobulin M