HealthMap

The Role of Cholecystokinin (CCK) in Gallbladder Function

Primary Function

• Triggers gallbladder contraction: CCK is a peptide hormone synthesized and secreted by enteroendocrine cells in the duodenum.
• Stimulus for release: The presence of fatty acids and amino acids in the small intestine stimulates the release of CCK into the bloodstream.

Physiological Effects

• Bile release: Upon reaching the gallbladder, CCK causes the smooth muscle wall to contract, forcing stored bile out through the cystic duct and into the common bile duct.
• Sphincter relaxation: Simultaneously, CCK relaxes the Sphincter of Oddi, allowing bile and pancreatic juices to flow freely into the duodenum to aid in the digestion and absorption of fats.

Clinical Significance

• Impaired contractility: In cases of sluggish gallbladder function or sludge accumulation, the response to CCK may be impaired, often linked to nutritional deficiencies or dietary imbalances.
• Nutritional support: Adequate dietary fats and specific supportive nutrients are essential for maintaining normal gallbladder dynamics and preventing stasis.