BACKGROUND & AIMS Colonic transit time (CTT) traditionally is assessed with radiopaque markers (ROMs), which requires radiation and is hindered by lack of standardization and compliance. We assessed regional and CTT with the SmartPill (SmartPill Corporation, Buffalo, NY), a new wireless pH and pressure recording capsule, in constipated and healthy subjects and compared this with ROM. METHODS ...

BACKGROUND Feeding related peptides have been shown to be additionally involved in the central autonomic control of gastrointestinal functions. Recent studies have shown that ghrelin, a stomach-derived orexigenic peptide, is involved in the autonomic regulation of GI function besides feeding behavior. Pharmacological evidence indicates that ghrelin effects on food intake are mediated by neurope...

AIMS/BACKGROUND Nuclear transit studies (NTS) allow us to follow transit through the stomach and the small and large intestines. We identified children with chronic constipation with rapid proximal colonic transit and characterized their clinical features. METHODS We reviewed NTS from 1998 to 2009 to identify patients with chronic constipation and rapid proximal colonic transit, defined as gr...

Viramontes, Blanca E., Allison Malcolm, Michael Camilleri, Lawrence A. Szarka, Sanna McKinzie, Duane D. Burton, and Alan R. Zinsmeister. Effects of an a2adrenergic agonist on gastrointestinal transit, colonic motility, and sensation in humans. Am J Physiol Gastrointest Liver Physiol 281: G1468–G1476, 2001.—To characterize a2-adrenergic control of motor and sensory functions of gastrointestinal ...

Acupuncture is useful for functional bowel diseases, such as constipation and diarrhea. However, the mechanisms of beneficial effects of acupuncture on colonic function have scarcely ever been investigated. We tested the hypothesis that electroacupuncture (EA) at ST-36 stimulates colonic motility and transit via a parasympathetic pathway in conscious rats. Hook-shaped needles were inserted at b...

BACKGROUND Watery stools are equated with rapid and hard stools with slow intestinal transit; however, the relation between stool form and transit through specific regions of the gut is not clear cut. In addition, more information is needed on interindividual variability of these measurements. AIM To examine the relations between stool form and gastric emptying, small bowel and colonic transi...

OBJECTIVE The aims of this study were to assess the usefulness of functional magnetic stimulation in controlling neurogenic bowel dysfunction in spinal cord injured patients with supraconal and conal/caudal lesions, and to investigate the efficacy of this regimen with a 3-month follow-up. DESIGN A longitudinal, prospective before-after trial. SUBJECTS A total of 22 patients with chronic spi...

We studied whether physiological concentration of short-chain fatty acids (SCFAs) affects colonic transit and colonic motility in conscious rats. Intraluminal administration of SCFAs (100-200 mM) into the proximal colon significantly accelerated colonic transit. The stimulatory effect of SCFAs on colonic transit was abolished by perivagal capsaicin treatment, atropine, hexamethonium, and vagoto...

Proximal faecal stasis may occur when faecal matter accumulates in the uninflamed colon above an area of active ulcerative colitis. This phenomenon is thought to be the cause of symptoms in some patients with distal disease. It is not known, however, how often patients with active distal colitis exhibit slow colonic transit. Fifty two consecutive patients with active ulcerative colitis each ing...