In:
The Journal of Immunology, The American Association of Immunologists, Vol. 204, No. 1_Supplement ( 2020-05-01), p. 158.18-158.18
Abstract:
The intestinal mucosa consists of a simple layer of epithelial tissue and loose connective tissue called the lamina propria that is formed by several immune cells mainly T cells that play important roles in local tolerance to microorganisms of the microbiota and food antigens. In addition to mucosa the small and large intestines also present the submucosal and the muscular layers that present ganglionic enteric plexuses formed by networks of interconnection between autonomic neurons of the enteric nervous system. These neurons secrete various neurotransmitters including glutamate and their innervations reach the lamina propria. It is known that T cells have receptors for neurotransmitters even the ionotropic glutamate receptor NMDAR. Thus, the present study intends to evaluate the role of NMDAR in αβ T cells from intestinal mucosa. C57BL/6 Grin1f/f and CD4crexGrin1flox mice of both sexes were used at 8 weeks of age. CD4+ T cells, CD8+ T cells, γδT cells, dendritic cells and macrophages present in mesenteric lymph nodes and at intraepithelial compartment of small intestine were evaluated. We found that CD8+ T cells were decreased and γδT cells were increased in mesenteric lymph nodes of CD4crexGrin1flox mice in comparison to the control group. Thus, intraepithelial CD4+ T cells and macrophages were increased, but intraepithelial CD8+ T cells were decreased in small intestine of CD4crexGrin1flox mice compared to the control group. Our preliminary results shows that the absence of NMDAR exclusively in αβ T cells alters the percentage of immune cells present both in mesenteric lymph nodes and intraepithelial compartment of small intestine suggesting a modulation by glutamate. New evaluations are still in progress to better understand that.
Type of Medium:
Online Resource
ISSN:
0022-1767
,
1550-6606
DOI:
10.4049/jimmunol.204.Supp.158.18
Language:
English
Publisher:
The American Association of Immunologists
Publication Date:
2020
detail.hit.zdb_id:
1475085-5
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