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Related Experiment Videos

Amino acid absorption after intestinal bypass procedures

S Bark

    International Journal of Obesity
    |January 1, 1981
    PubMed
    Summary

    Intestinal bypass surgery for obesity can reduce branched-chain amino acid absorption, potentially impacting liver health. Further research is needed to understand these changes and their clinical significance.

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    Area of Science:

    • Gastroenterology
    • Nutritional Science
    • Bariatric Surgery

    Background:

    • Intestinal bypass surgery for obesity is associated with hepatic damage.
    • Protein malnutrition is linked to liver dysfunction.
    • Understanding amino acid absorption is crucial for managing post-surgical complications.

    Purpose of the Study:

    • To review investigations on amino acid absorption before and after intestinal bypass.
    • To explore the relationship between altered amino acid absorption and hepatic complications.

    Main Methods:

    • Review of existing studies on amino acid and peptide absorption.
    • Correlation analysis of branched-chain amino acid uptake with specific protein levels.

    Main Results:

    • Postoperative reduction in plasma concentrations and absorption of branched-chain amino acids (leucine, isoleucine, valine).
    • Dipeptide absorption appears less affected than individual amino acid absorption.
    • Changes in amino acid uptake correlate with plasma levels of thyroxine-binding pre-albumin and retinol-binding protein.

    Conclusions:

    • Impaired branched-chain amino acid uptake is a consistent finding after intestinal bypass.
    • The clinical significance of impaired branched-chain amino acid uptake requires further investigation.
    • While some amino acid levels increase post-surgery, direct liver damage evidence is lacking.

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