Interferon gamma production by human intestinal mucosal mononuclear cells. Decreased levels in inflammatory bowel disease - PubMed (original) (raw)

. 1988 Oct;33(10):1297-304.

doi: 10.1007/BF01536683.

Affiliations

• PMID: 3139380
• DOI: 10.1007/BF01536683

Interferon gamma production by human intestinal mucosal mononuclear cells. Decreased levels in inflammatory bowel disease

B Y Lieberman et al. Dig Dis Sci. 1988 Oct.

Abstract

Immune (gamma) interferon is a substance produced by immunologically activated mononuclear cells. Besides its antiviral activity, interferon gamma has a crucial role in immunoregulation, by acting directly upon lymphocytes and monocytes, and interacting with other soluble mediators of the immune response. Studies of the interferons system in inflammatory bowel disease have been limited, and little information is available on the generation of interferon during immunological events occurring in the human gut. To investigate the capacity of intestinal mucosal mononuclear cells to produce interferon gamma, lamina proprial mononuclear cells, isolated from Crohn's disease, ulcerative colitis, and control patients, were incubated with interleukin 2 or phytohemagglutinin, and the amounts of interferon gamma present in the culture supernatants were measured by a virus cytopathic effect inhibition assay. Under identical stimulatory conditions, culture supernatants of cells derived from actively involved mucosa of inflammatory bowel disease specimens contained two- to fivefold less interferon gamma than those of cells from control tissue. However, the amount of interferon gamma present in supernatants of cells from uninvolved inflammatory bowel disease mucosa was similar to that found in control supernatants. These results indicate that, in patients with active Crohn's disease and ulcerative colitis, mononuclear cells produce decreased amounts of interferon gamma in the intestinal mucosa. The exact significance of these findings is unclear, but because of the importance of interferon gamma in a variety of cell-mediated immune phenomena, its impaired availability might be relevant to the pathogenesis of inflammatory bowel disease.

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