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BioMed Research International
Volume 2016, Article ID 8404156, 8 pages
http://dx.doi.org/10.1155/2016/8404156
Research Article

Immunomodulatory Effects of Lactobacillus plantarum Lp62 on Intestinal Epithelial and Mononuclear Cells

1State University of Feira de Santana, Transnordestina Avenue S/N, 44030-900 Feira de Santana, BA, Brazil
2State University of Santa Cruz, Highway Ilhéus-Itabuna, km 16 S/N, 45662-900 Ilhéus, BA, Brazil

Received 7 March 2016; Revised 3 June 2016; Accepted 14 June 2016

Academic Editor: David Bernardo

Copyright © 2016 Thalis Ferreira dos Santos et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Probiotic lactic acid bacteria are known for their ability to modulate the immune system. They have been shown to inhibit inflammation in experiments with animal models, cell culture, and clinical trials. The objective of this study was to elucidate the anti-inflammatory potential of Lactobacillus plantarum Lp62, isolated from cocoa fermentation, in a cell culture model. Lp62 inhibited IL-8 production by Salmonella Typhi-stimulated HT-29 cells and prevented the adhesion of pathogens to these epithelial cells. The probiotic strain was able to modulate TNF-α, IL1-β, and IL-17 secretion by J774 macrophages. J774 activation was reduced by coincubation with Lp62. PBMC culture showed significantly higher levels of CD4+CD25+ T lymphocytes following treatment with Lp62. Probiotics also induced increased IL-10 secretion by mononuclear cells. L. plantarum Lp62 was able to inhibit inflammatory stimulation in epithelial cells and macrophages and activated a tolerogenic profile in mononuclear cells of healthy donors. These results indicate this strain for a possible application in the treatment or prevention of inflammatory diseases.