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Iran J Microbiol. 2019 Aug;11(4):294-299.

Differences in systemic humoral immune response among Balb/c mice administered with probiotic, LPS Escherichia coli, and probiotic-LPS E. coli.

Author information

1
Department of Pediatrics, Division of Pediatric Emergency and Intensive Care, Saiful Anwar General Hospital, University of Brawijaya, Malang, Indonesia.
2
Department of Pediatrics, Division of Pediatric Gastroenterology and Hepatology, Saiful Anwar General Hospital, University of Brawijaya, Malang, Indonesia.

Abstract

Background and Objectives:

The aim of this study was to compare the systemic humoral immune responses, including IgE, IgA, IgG and IgM levels in Balb/c mice administered a probiotic, LPS derived from Escherichia coli (E.coli), and probiotic-LPS derived from E. coli.

Materials and Methods:

Thirty-two male Balb/c mice, 10-12 weeks of age with body weight ranging from 30-40 g were randomly divided into four experimental groups (n=8). The treatment regimens were as follows: Group 1, mice did not receive LPS or probiotic (control group); Group 2, mice received only LPS on the first day; Group 3, mice received probiotic for 7 days; Group 4, mice received LPS on the first day, and then continued, with probiotic for 7 days. The mice were observed for 8 days, and then, euthanized the next day (day 9). The serum was collected, and the levels of IgE, IgA, IgG and IgM were measured using ELISA.

Results:

The humoral immune response was higher in the presence of a probiotic compared to that in the control; IgE (9.02 ± 0.58 units/ml, p=0.000), IgA (3.26 ± 0.99 units/ml, p=0.316), IgG (7.29 ± 0.24 units/ml, p=0.000), and IgM (4.01 ± 2.98 units/ml, p=0.505). When administered with LPS E. coli along with probiotic, the humoral immune response was the highest; IgE (10.68 ± 1.63 units/ml, p=0.000), IgA (8.34 ± 1.47 units/ml, p=0.000), IgG (9.96 ± 0.98 units/ml, p=0.000), and IgM (4.31 ± 1.05 units/ml, p=0.319) compared to the control group.

Conclusion:

Probiotic-LPS derived from E. coli treatment induced a higher humoral immune response (highest IgE, IgA, IgG and IgM levels) compared to treatment with probiotic only.

KEYWORDS:

Humoral; Immune; Lipopolysaccharide; Probiotic

PMID:
31719960
PMCID:
PMC6829110

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