Related Experiment Video
Updated: Jun 30, 2026

Ileectomy-induced Bile Overaccumulation in Mouse Intestine
Published on: August 21, 2017
[Intestinal protein assimilation and losses in man (author's transl)]
Abstract:
The total quantity of endogenous plus exogenous protein digested and absorbed in the normal gastrointestinal tract in man is in excess of 150 mg per day. Total fecal nitrogen indicates net losses of less than 10% per day in health. Malabsorption and maldigestion both contribute to a decrease in assimilation of exogenous and endogenous proteins. Abnormal serum protein losses across the gastrointestinal tract may be totally recovered if the leak is small and proximal in the intestine. Specific defects in amino acid absorption are often compensated by intact peptide absorption.
Related Concept Videos
Protein Digestion
Proteins: Dietary Sources and Requirements
Overview of Protein Metabolism
Amino acids play various roles in the body once they are absorbed into cells. They are restructured...
Protein Absorption
Metabolic States of the Body: The Absorptive State
Physiology of the Gastrointestinal System II: Digestion and Absorption
Digestion begins in the mouth, where food undergoes mechanical breakdown by chewing and combines with saliva. Salivary amylase, an enzyme in saliva, starts the breakdown of starches into maltose. The food then travels down the esophagus to the stomach.
In the stomach, a...

