The guanylate cyclase-C signaling pathway is down-regulated in inflammatory bowel disease

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The guanylate cyclase-C signaling pathway is down-regulated in inflammatory bowel disease

OBJECTIVE Activation of membrane receptor guanylate cyclase-C (GC-C) is implicated in gastrointestinal fluid and electrolyte balance, preservation of intestinal barrier integrity, anti-trophic effects and inhibition of pain sensation. To evaluate GC-C signaling, we examined the regulation of GC-C (GUCY2C/Gucy2c) and its endogenous ligands guanylin (GN/GUCA2A/Guca2a) and uroguanylin (UGN/GUCA2B/...

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Guanylate cyclase-C signaling pathway regulates intestinal inflammatory injury and epithelial barrier function in Caco-2 cells

Background: Guanylate cyclase-C (GC-C) signaling pathway via guanylin (Gn) and uroguanylin (Ugn) activation regulates intestinal fluid and electrolyte homeostasis. It is down-regulated in the patients of inflammatory bowel diseases (IBD). However, studies on the role of GC-C signaling in murine models of colitis are controversial. Here, we investigated the effect of GC-C on intestinal inflammat...

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Activation of guanylate cyclase C signaling pathway protects intestinal epithelial cells from acute radiation-induced apoptosis.

Uroguanylin (UGN) is a peptide hormone that binds to and activates the intestinal epithelial cell (IEC) transmembrane receptor guanylate cyclase C (GC-C), which in turn increases intracellular cGMP. Gene targeting of murine UGN or GC-C results in significantly lower levels of cGMP in IECs. On the basis of effects of cGMP in nonintestinal systems, we hypothesized that loss of GC-C activation wou...

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Neonatal Presentation of Unremitting Inflammatory Bowel Disease

Very-early-onset inflammatory bowel disease (VEO-IBD) has a distinct phenotype and should be considered a specific entity. VEO-IBD presents with very severe clinical pictures and is frequently known by an indeterminate colitis whose clinical remission is unmanageable. This study examines the case of a neonate with VEO-IBD, not responding to medical and surgical treatment. A 7-day-old Iranian fe...

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Guanylate cyclase-C/cGMP: an emerging pathway in the regulation of visceral pain

Activation of guanylate cyclase-C (GC-C) expressed predominantly on intestinal epithelial cells by guanylin, uroguanylin or the closely related GC-C agonist peptide, linaclotide, stimulates generation, and release of cyclic guanosine-3',5'-monophosphate (cGMP). Evidence that the visceral analgesic effects of linaclotide are mediated by a novel, GC-C-dependent peripheral sensory mechanism was fi...

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ژورنال

عنوان ژورنال: Scandinavian Journal of Gastroenterology

سال: 2015

ISSN: 0036-5521,1502-7708

DOI: 10.3109/00365521.2015.1038849