Related Experiment Video
Updated: May 6, 2026
08:42
Using Multi-fluorinated Bile Acids and In Vivo Magnetic Resonance Imaging to Measure Bile Acid Transport
Published on: November 27, 2016
10.5K
Interactions between intraluminal bile acids and digestive products on pancreatic and gallbladder function
The Journal of Clinical Investigation
|September 1, 1973
Summary
Bile acids inhibit pancreatic enzyme secretion and gallbladder contraction when mixed with digestive products in the small intestine. This intraluminal effect may regulate digestive processes by reducing cholecystokinin-pancreozymin (CCK-PZ) release.
Area of Science:
- Gastroenterology
- Digestive Physiology
Background:
- Bile acids are crucial for fat digestion and absorption.
- The role of bile acids in regulating pancreatic and gallbladder function is complex.
Purpose of the Study:
- To investigate the intraluminal interactions between bile acids and digestive products.
- To determine the effect of these interactions on pancreatic enzyme secretion and gallbladder contraction.
Main Methods:
- A perfusion method was used in 77 healthy volunteers.
- Essential amino acids (EAA) or monoolein (MO) were perfused, with or without bile acids (TC, TCDC, TDC).
- Pancreatic enzyme output and gallbladder contraction were measured.
Main Results:
- Perfusion of EAA or MO stimulated pancreatic enzyme output and gallbladder contraction.
- Bile acids (TC, TCDC, TDC) significantly reduced pancreatic enzyme output and prevented gallbladder contraction when co-perfused with EAA or MO.
- This inhibitory effect was intraluminal and dose-dependent.
Conclusions:
- High intraluminal concentrations of bile acids inhibit the stimulatory effects of digestive products on pancreatic and gallbladder function.
- This inhibition is likely mediated by reduced cholecystokinin-pancreozymin (CCK-PZ) secretion.
- Bile acids may play a regulatory role in digestion by modulating CCK-PZ release.
Related Concept Videos
01:06Lipid Digestion
73.6K
Lipids are large molecules that are generally not water-soluble. Since most of the digestive enzymes in the human body are water-based, there are specific steps the body must take to break down lipids and make them available for use.
73.6K
01:29Intestinal Phase of Digestion
10.1K
The intestinal phase of digestion is the third and final stage of the digestive process, occurring after the cephalic and gastric phases. It begins when chyme, a partially digested mixture of food and digestive enzymes, enters the small intestine from the stomach. This phase is crucial for nutrient absorption and involves complex hormonal and enzymatic interactions.
The arrival of the chyme in the small intestine distends the duodenum, which triggers the enterogastric reflex. This distension...
The arrival of the chyme in the small intestine distends the duodenum, which triggers the enterogastric reflex. This distension...
10.1K
01:19Bile
6.2K
Bile is a crucial bodily fluid, characterized by its yellow-green color and alkaline nature. Produced in the liver, it is transported through the common hepatic duct into either the cystic duct, leading to the gallbladder, or directly into the common bile duct. The flow of bile is regulated by the sphincter of Oddi located at the entrance of the duodenum. When this sphincter is closed, bile is redirected to the gallbladder for storage and concentration.
Bile is released when dietary fats enter...
Bile is released when dietary fats enter...
6.2K
01:26Pancreatic Juice and Secretion
3.5K
Pancreatic juice is a clear fluid produced by the pancreas, containing water, salts, sodium bicarbonate, and enzymes vital for digestion in the small intestine. It helps break down large molecules, facilitating nutrient absorption.
When acidic chyme from the stomach enters the duodenum, it triggers the release of secretin, a hormone that prompts pancreatic juice secretion. After a fatty meal, cholecystokinin, another hormone, stimulates gallbladder contraction and enhances enzyme-rich...
When acidic chyme from the stomach enters the duodenum, it triggers the release of secretin, a hormone that prompts pancreatic juice secretion. After a fatty meal, cholecystokinin, another hormone, stimulates gallbladder contraction and enhances enzyme-rich...
3.5K
01:27Acute Pancreatitis I: Introduction
1.5K
Pancreatitis is inflammation of the pancreas, an organ located behind the stomach. It can be either acute or chronic.
Acute pancreatitis is characterized by rapid inflammation of the pancreas, often caused by factors like gallstone blockage or excessive alcohol consumption. Chronic pancreatitis, on the other hand, is a slow, progressive inflammation that may result from long-term alcohol abuse, obstructions in the pancreatic duct, or genetic factors.
The causes of acute pancreatitis include:
Acute pancreatitis is characterized by rapid inflammation of the pancreas, often caused by factors like gallstone blockage or excessive alcohol consumption. Chronic pancreatitis, on the other hand, is a slow, progressive inflammation that may result from long-term alcohol abuse, obstructions in the pancreatic duct, or genetic factors.
The causes of acute pancreatitis include:
1.5K
01:25Acute Pancreatitis I: Introduction
26
Acute pancreatitis is the sudden inflammation of the pancreas caused by the early activation of digestive enzymes, leading to the autodigestion of pancreatic tissue. This results in local inflammation and, in severe cases, systemic complications.EtiologyUnderstanding the underlying causes is crucial, as identifying the etiology guides treatment and anticipates complications. Acute pancreatitis can be triggered by various factors, typically grouped into the following clinical categories.Biliary...
26