Modulation of humoral immune response through probiotic intake.

H Fang, T Elina, A Heikki, S Seppo

Journal: FEMS immunology and medical microbiology 2001;29(1):47-52

PMID: 10967260

Abstract

Thirty healthy volunteers were randomised into three different treatment groups and consumed Lactobacillus GG, Lactococcus lactis or placebo (ethyl cellulose) for 7 days. On days 1, 3 and 5, an attenuated Salmonella typhi Ty21a oral vaccine was given to all subjects to mimic an enteropathogenic infection. All subjects responded well to the vaccine, but no significant differences were observed in numbers of IgA-, IgG- and IgM-secreting cells among the different groups. There was a trend towards a greater increase in specific IgA among the subjects receiving the vaccine in combination with Lactobacillus GG. Those receiving L. lactis with their vaccine evinced significantly higher CR3 receptor expression on neutrophils than those receiving either the placebo or Lactobacillus GG. These results indicate that probiotics may influence differently the immune response to oral S. typhi vaccine and that the immunomodulatory effect of probiotics is strain-dependent.

Address: Department of Biochemistry and Food Chemistry, University of Turku, Finland.

DOI: 10.1111/j.1574-695X.2000.tb01504.x

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MeSH Terms: Adult, Antibodies, Bacterial, Antibody-Producing Cells, Enzyme-Linked Immunosorbent Assay, Female, Humans, Immunoglobulins, Lactobacillus, Lactococcus lactis, Male, Middle Aged, Probiotics, Receptors, Complement, Receptors, IgG, Salmonella Vaccines, Salmonella typhi, Vaccination