Search results for "intestinal motility"

A1 ADENOSINE RECEPTOR MODULATION OF CONTRACTILITY IN MOUSE DUODENUM LONGITUDINAL MUSCLE.

2010

Experimental evidence suggests that adenosine is involved in the regulation of gastrointestinal functions. In the present study we examined the influence of adenosine on the contractile activity of mouse duodenum longitudinal muscle. Reverse transcription-polymerase chain reaction revealed the expression of all the adenosine receptors in whole thickness duodenum, being the A2B receptors expressed only in the neuromuscular layer. Mechanical activity of longitudinally oriented duodenal segments was recorded in vitro as changes in isometric tension. Adenosine produced concentration-dependent relaxation, markedly reduced by DPCPX, A1 receptor antagonist, but unaffected by DMPX or MRS 1220, A2 a…

Interplay between cannabinoids and purines in the modulation of the spontaneous mechanical activity of mouse ileum.

2008

Review article: a comparison of glucagon-like peptides 1 and 2.

2013

Summary Background Recent advancements in understanding the roles and functions of glucagon-like peptide 1 (GLP-1) and 2 (GLP-2) have provided a basis for targeting these peptides in therapeutic strategies. Aim To summarise the preclinical and clinical research supporting the discovery of new therapeutic molecules targeting GLP-1 and GLP-2. Methods This review is based on a comprehensive PubMed search, representing literature published during the past 30 years related to GLP-1 and GLP-2. Results Although produced and secreted together primarily from L cells of the intestine in response to ingestion of nutrients, GLP-1 and GLP-2 exhibit distinctive biological functions that are governed by t…

Glucagon-like peptide-1 relaxes gastric antrum through nitric oxide in mice.

2010

Abstract Glucagon-like-peptide-1 (GLP-1) is a proglucagon-derived peptide expressed in the intestinal enteroendocrine-L cells and released after meal ingestion. GLP-1 reduces postprandial glycemia not only by its hormonal effects, but also by its inhibitory effects on gastrointestinal motility. Recently, we showed that GLP-1 acts in the enteric nervous system of mouse intestine. Therefore our working hypothesis was that GLP-1 may have also a direct influence on the gastric mechanical activity since the major part of experimental studies about its involvement in the regulation of gastric motility have been conducted in in vivo conditions. The purposes of this study were (i) to examine exogen…

GABA and its receptors in the enteric nervous system of the gastrointestinal tract.

2009

GLP-2 receptor expression in excitatory and inhibitory enteric neurons and its role in mouse duodenum contractility.

2011

Background. Glucagon-like peptide 2 (GLP-2), a nutrient-responsive hormone, exerts various actions in the gastrointestinal tract that are mediated by a G-protein coupled receptor called GLP-2R. A little information is available on GLP-2R expression in enteric neurons and nothing on the interstitial cells of Cajal (ICC). Methods. We investigated presence and distribution of the GLP-2R in the mouse duodenum by immunohistochemistry and the potential motor effects of GLP-2 on the spontaneous and neurally evoked mechanical activity. Key Results. The GLP-2R was expressed by the myenteric and submucosal neurons. Labelling was also present in nerve varicosities within the circular muscular layer an…

Influence of glucagon-like peptide-2 on mouse proximal colon motility.

2010

Influence by glucagon-like peptide-2 (GLP-2) on spontaneous mechanical activity and electrically-evoked cholinergic contractions in mouse proximal co…

2010

Mechanism of action of the betalain pigment indicaxanthin, purified from fruits of Opuntia ficus-indica, on mouse ileal motility in vitro.

2010

Functional gastrointestinal disorders: Dynamic observation of pediatric cases

2015

Introduction: Functional gastrointestinal disorders (FGID) are a variable set of clinical cases characterized by recurrent/chronic symptoms not associated with an organic pathology. These disorders are classified using the Rome III criteria. Objective: The study wanted to evaluate the prevalence by gender and age of FGIDs in a pediatric population recruited on the basis of recurrent/chronic abdominal pain, and to follow up patients for six months by administering questionnaires aimed at verifying any changes in symptoms. We also evaluated the possible involvement of factors responsible for these changes. Results: 62 patients between 4 and 17 years of age (27 males and 35 females) were inclu…