We evaluated the immunomodulatory activity of type-4 resistant starch (RS) in mesenteric lymph nodes (MLNs) using a rat model. Sixteen male Sprague-Dawley rats were fed either a cellulose diet or an RS diet (RSD) for 4 weeks. Serum immunoglobulin A levels, as well as the CD4(+) T cell population and the ratio of CD4(+)/CD8(+) T cells in the MLNs of rats, were significantly elevated by replacing cellulose with RS in the diet. The survival rate of concanavalin A (Con A)-stimulated MLN lymphocytes and interleukin-4 secretion from the Con A-stimulated MLN lymphocytes were significantly increased in rats fed RSD. These results indicate that type-4 RS might ameliorate allergic inflammation in the MLNs of rats through an increased CD4(+) T cell population and enhanced differentiation of MLN lymphocytes into type-2 T cells.
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http://dx.doi.org/10.1089/jmf.2009.1170 | DOI Listing |
J Immunother Cancer
January 2025
Department of Thoracic, Head and Neck Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
Background: Human papillomavirus (HPV)-driven cancers include head and neck squamous cell carcinoma and cervical cancer and represent approximately 5% of all cancer cases worldwide. Standard-of-care chemotherapy, radiotherapy, and immune checkpoint inhibitors (ICIs) are associated with adverse effects and limited responses in patients with HPV-driven cancers. The integration of targeted therapies with ICIs may improve outcomes.
View Article and Find Full Text PDFFront Cell Infect Microbiol
November 2024
División de Inmunología, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, San Luis, Argentina.
Introduction: (Ye) is a Gram-negative bacterium that causes gastrointestinal infections. The myeloid-derived suppressor cells (MDSCs) constitute a cellular population with the capacity of inducing the specific suppression of T cells. Although there is evidence supporting the role of MDSCs in controlling the immune responses in several bacterial infections, its role during Ye infection has not yet been reported.
View Article and Find Full Text PDFNutrients
October 2024
Facultad de Medicina, Centro de Investigación e Innovación Biomédica, Universidad de los Andes, Santiago 755000, Chile.
Background: IL-33, a pleiotropic cytokine, has been associated with a plethora of immune-related processes, both inflammatory and anti-inflammatory. T regulatory (Treg) cells, the main leukocyte population involved in immune tolerance, can be induced by the administration of IL-33, the local microbiota, and its metabolites. Here, we demonstrate that IL-33 drastically induces the production of intestinal metabolites involved on tryptophan (Trp) metabolism.
View Article and Find Full Text PDFSci Adv
November 2024
State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases and Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, China.
PLoS One
October 2024
School of Basic Medicine, Guangxi University of Chinese Medicine, Nanning, Guangxi, China.
Background: The T cell-mediated delayed-type hypersensitivity (DTH) response is critical for elucidating cellular immune mechanisms, especially the role of memory T cells upon antigen re-exposure. This study aimed to investigate the specific effects of the immunosuppressive drugs Cyclophosphamide (CY) and Dexamethasone (DEX) on intestinal immunity and microbiota in a DTH mouse model, contributing to a more nuanced understanding of their immunomodulatory mechanisms.
Methods: Female BALB/c mice were sensitized to 2,4-dinitrofluorobenzene (DNFB) and randomly allocated into control, CY, and DEX groups.
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