[Study on CCK-induced gallbladder emptying with real-time ultrasonography]

Area of Science:

• Gastroenterology
• Hepatobiliary Medicine
• Diagnostic Imaging

Background:

• Gallbladder function is crucial for digestion.
• Cholecystokinin-octapeptide (CCK-OP) stimulates gallbladder contraction.
• Impaired gallbladder emptying is associated with gallstone disease.

Purpose of the Study:

• To investigate the effect of atropine on CCK-OP-induced gallbladder emptying in normal subjects.
• To compare gallbladder emptying between patients with silent gallstones and healthy controls.

Main Methods:

• Real-time ultrasonography was used to assess gallbladder volume and emptying.
• Normal subjects received CCK-OP with and without atropine.
• Gallbladder emptying was measured in patients with silent gallstones and control subjects.

Main Results:

• Atropine significantly reduced CCK-OP-induced gallbladder emptying from 88.7% to 43.4% in normal subjects (P < 0.001).
• Fasting gallbladder volume was larger in silent gallstone patients (26.7 cm3) than controls (19.2 cm3) (P < 0.05).
• Gallbladder emptying was significantly lower in silent gallstone patients (44.0%) compared to controls (53.4%) (P < 0.01).

Conclusions:

• CCK-OP-induced gallbladder emptying is significantly inhibited by atropine.
• Patients with silent gallstones demonstrate impaired gallbladder emptying.
• These findings highlight the role of CCK-OP in gallbladder function and its impairment in gallstone disease.