Antibodies against Vibrio cholerae lipopolysaccharide, cell-bound haemagglutinin and toxin in the intestinal fluid during convalescence.
Specific antibodies to V. cholerae lipopolysaccharide (LPS), cell-bound haemagglutinin (CHA) and toxin (CT) in the intestinal lavages of healthy Thais and Thai cholera patients during the convalescence period were determined by enzyme-linked immunosorbent assay. Only IgM and IgA specific antibodies were detectable in the specimens. All of the persons who were just recovered from cholera had IgA anti-CT and IgA anti-LPS and 82.4% had IgA anti-CHA. The IgA anti-CT, anti-LPS and anti-CHA were detected also in the gut fluids of 70.6%, 94.1% and 88.2%, respectively, of the healthy controls. The mean levels of the IgA antibodies of all specificities between the two groups of individuals were not different. However, the IgM anti-CT and IgM anti-LPS of the cholera patients increased during the convalescence period. The levels, therefore, were significantly higher than those of the controls. The ratios of IgA anti-CT: IgM anti-CT and IgA anti-LPS: IgM anti-LPS among the patients were 2.93:1 and 2.02:1, respectively while those of the controls were 10:1 and 34:1, respectively. IgA antibodies predominated in the lavages of both groups of the individuals.
Chongsa-Nguan
M
M
Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.
Chaicumpa
W
W
Kalambaheti
T
T
Surachedchai
Y
Y
Thanungkul
B
B
D000907:Antibodies, Bacterial / Q000032:analysis*; D002771:Cholera / Q000276:immunology*; D002772:Cholera Toxin / Q000276:immunology*; D006388:Hemagglutinins / Q000276:immunology*; D006801:Humans; D007070:Immunoglobulin A / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D007422:Intestines / Q000276:immunology; D008070:Lipopolysaccharides / Q000276:immunology*; D008297:Male; D013997:Time Factors; D014734:Vibrio cholerae / Q000276:immunology*
D000907:Antibodies, Bacterial; D006388:Hemagglutinins; D007070:Immunoglobulin A; D007075:Immunoglobulin M; D008070:Lipopolysaccharides; D002772:Cholera Toxin