title: Intestinal gas retention in patients with idiopathic slow-transit constipation.
abstract: Patients with slow-transit constipation (STC) have delayed colonic transit for solid und liquid bowel contents but intestinal gas handling has not been studied so far. Different nutrients influence motor and sensory gut function. We hypothesized that, in patients with STC, alteration of regulatory mechanisms may result in impaired intestinal gas dynamics. On 3 separate days, validated gas challenge was performed in 10 STC patients and 10 volunteers during duodenal saline, lipids, or intravenous glucose. During saline only 60% +/- 8% of gas was cleared by STC patients after 60-min gas infusion, vs. 91% +/- 2% by controls (P < 0.001). Acute hyperglycemia or lipids did not change intestinal gas dynamics in these patients (saline infusion), but compared to healthy subjects, significant intestinal gas retention occurred. In STC, disturbances of intestinal gas dynamics include basal intestinal gas retention, and this is virtually not affected by acute hyperglycemia or duodenal lipids.
authors: Department of Medicine II (Gastroenterology, Hepatology and Infectious Diseases), University Hospital of Heidelberg at Mannheim, Theodor-Kutzer-Ufer 1-3, D-68167, Mannheim, Germany.
authors: Ana Cristina
authors: AC
authors: Hernando-Harder
authors: Andreas
authors: A
authors: Franke
authors: Thilo
authors: T
authors: Wedel
authors: Martina
authors: M
authors: Böttner
authors: Heinz-Juergen
authors: HJ
authors: Krammer
authors: Manfred Vincenz
authors: MV
authors: Singer
authors: Hermann
authors: H
authors: Harder
mesh_terms: D000328:Adult; D003109:Colonic Diseases, Functional / Q000175:diagnosis / Q000209:etiology* / Q000503:physiopathology; D003113:Colonoscopy; D003248:Constipation / Q000150:complications* / Q000175:diagnosis / Q000503:physiopathology; D003937:Diagnosis, Differential; D004333:Drug Administration Routes; D004386:Duodenum; D005260:Female; D005740:Gases / Q000378:metabolism*; D005769:Gastrointestinal Motility / Q000187:drug effects / Q000502:physiology; D005772:Gastrointestinal Transit / Q000187:drug effects / Q000502:physiology*; D005947:Glucose / Q000008:administration & dosage; D006801:Humans; D008055:Lipids / Q000008:administration & dosage; D008875:Middle Aged; D012677:Sensation; D012965:Sodium Chloride / Q000008:administration & dosage; D013549:Sweetening Agents / Q000008:administration & dosage
chemical_list: D005740:Gases; D008055:Lipids; D013549:Sweetening Agents; D012965:Sodium Chloride; D005947:Glucose