Cited by 177Gastrointestinal motility and disordersCongenital gastrointestinal and neural anomaliesUrinary Bladder and Prostate Research

Adrenergic modulation of human colonic motor and sensory function

Bharucha, Adil E., Camilleri, Michael, Zinsmeister, Alan R., Hanson, Russell B.·1997·American Journal of Physiology-Gastrointestinal and Liver Physiology

Abstract

The effects of pharmacological modulation of adrenergic receptors on colonic motor and sensory function are unclear. We studied 40 healthy volunteers in a single-blind design; 12 received saline, and the remaining 28 received either clonidine, yohimbine, phenylephrine, or ritodrine. A barostat-manometric assembly in the left colon recorded drug effects on fasting and postprandial motor function, compliance, and sensation in response to standardized phasic balloon distensions delivered in random order. Clonidine reduced and yohimbine increased fasting, but not postprandial tone, by 63.2 ± 22.3% and 24.8 ± 8.8% (SE), respectively. Clonidine tended to reduce fasting phasic activity in the descending and sigmoid colon. A power exponential model provided the best fit to the compliance curve. Clonidine significantly increased colonic compliance. Clonidine reduced and yohimbine increased colonic perception of pain but not gas sensation during distension. Phenylephrine and ritodrine did not influence colonic motor or sensory function in the present studies. Thus α 2-receptors modulate fasting colonic tone and compliance and alter perception of pain but not gas during mechanical stimulation of the colon.

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Crossref · 10.1152/ajpgi.1997.273.5.g997

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Authors
Bharucha, A. E., Camilleri, M., Zinsmeister, A. R., & Hanson, R. B.
Affiliations
  • Gastroenterology Research Unit and
  • Mayo Clinic (US)
Venue
American Journal of Physiology-Gastrointestinal and Liver Physiology
Published
1997-11-01
Volume
273
Issue
5
Pages
G997-G1006
ISSN
  • 0193-1857 (ISSN-L)
  • 1522-1547
OpenAlex
W2175762975
Cited by
177
References
34
Citations by year
2025: 3 · 2023: 1 · 2022: 1 · 2020: 2 · 2019: 2 · 2018: 3 · 2017: 3 · 2016: 12 · 2015: 3 · 2014: 4 · 2013: 9 · 2012: 4
FWCI
5.49
Type
journal article
Language
en
Open access
closed
Locations
  • American Journal of Physiology-Gastrointestinal and Liver Physiology (publishedVersion)
  • PubMed (publishedVersion)
Funders
U.S. Public Health Service (00585)
Topics
  • Health Sciences › Medicine › Gastroenterology › Gastrointestinal motility and disorders
  • Health Sciences › Medicine › Surgery › Congenital gastrointestinal and neural anomalies
  • Health Sciences › Medicine › Urology › Urinary Bladder and Prostate Research
Keywords
adrenergic receptors, colonic motility, clonidine, yohimbine, phenylephrine, ritodrine, alpha2-adrenoceptors, colonic compliance, colonic tone, balloon distension, postprandial motility
MeSH terms
Adult, Anxiety, Blood Pressure, Clonidine, Colon, Depression, Female, Gastrointestinal Motility, Heart Rate, Humans, Male, Muscle Contraction, Muscle Tonus, Muscle, Smooth, Phenylephrine, Pressure, Ritodrine, Sensation, Stress, Psychological, Yohimbine, Single-Blind Method, Adrenergic Agents, Postprandial Period

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