Neurotensin increases colonic motility

Area of Science:

• Gastroenterology
• Neuroendocrinology
• Physiology

Background:

• Neurotensin is a neuropeptide found in the gastrointestinal tract.
• Its role in regulating colonic motility is not fully understood.

Purpose of the Study:

• To investigate the effects of intravenous neurotensin on colonic motility in healthy volunteers and patients.

Main Methods:

• Neurotensin was infused intravenously at 12 pmol/kg/min for 30 minutes.
• Colonic motility was measured in the ascending colon, rectosigmoid area, and at the splenic flexure.
• Motility index and contraction duration were analyzed.

Main Results:

• Neurotensin increased contraction duration in the ascending colon (76%) and rectosigmoid area (46%).
• Motility index significantly rose in the ascending colon and rectosigmoid area.
• Increased sensation of intestinal movement and bowel content discharge were reported.

Conclusions:

• Neurotensin enhances colonic motility, particularly in the ascending colon of patients and the rectosigmoid area of healthy subjects after a delay.
• The peptide plays a role in regulating gastrointestinal transit.