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Title: Cocoa Diet Prevents Antibody Synthesis and Modifies Lymph Node Composition and Functionality in a Rat Oral Sensitization Model
Author: Camps i Bossacoma, Mariona
Abril Gil, Maria del Mar
Saldaña-Ruíz, Sandra
Franch i Masferrer, Àngels
Pérez-Cano, Francisco J.
Castell, Margarida
Keywords: Còlera
Malalties intestinals
Intestinal diseases
Issue Date: 23-Apr-2016
Publisher: MDPI
Abstract: Cocoa powder, a rich source of polyphenols, has shown immunomodulatory properties in both the intestinal and systemic immune compartments of rats. The aim of the current study was to establish the effect of a cocoa diet in a rat oral sensitization model and also to gain insight into the mesenteric lymph nodes (MLN) activities induced by this diet. To achieve this, three-week-old Lewis rats were fed either a standard diet or a diet with 10% cocoa and were orally sensitized with ovalbumin (OVA) and with cholera toxin as a mucosal adjuvant. Specific antibodies were quantified, and lymphocyte composition, gene expression, and cytokine release were established in MLN. The development of anti-OVA antibodies was almost totally prevented in cocoa-fed rats. In addition, this diet increased the proportion of TCR gamma delta+ and CD103+CD8+ cells and decreased the proportion of CD62L+CD4+ and CD62L+CD8+ cells in MLN, whereas it upregulated the gene expression of OX40L, CD11c, and IL-1 beta and downregulated the gene expression of IL-17 alpha. In conclusion, the cocoa diet induced tolerance in an oral sensitization model accompanied by changes in MLN that could contribute to this effect, suggesting its potential implication in the prevention of food allergies.
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It is part of: Nutrients, 2016, vol. 8, num. 4, p. 242
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ISSN: 2072-6643
Appears in Collections:Articles publicats en revistes (Institut de Recerca en Nutrició i Seguretat Alimentària (INSA·UB))
Articles publicats en revistes (Biologia Cel·lular, Fisiologia i Immunologia)
Articles publicats en revistes (Bioquímica i Fisiologia)

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