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Isolation, localization, and characterization of gastrointestinal peptides
Clinical Biochemistry
|April 1, 1984
Summary
Gastrointestinal peptides are increasingly identified, acting as hormones or neurotransmitters. Their isolation relies on bioassays and amino-acid analysis, revealing distinct biological actions and peptide families.
Area of Science:
- Gastroenterology
- Endocrinology
- Neuroscience
Background:
- The gastrointestinal tract hosts a growing number of identified peptides.
- These peptides function as circulating hormones (e.g., gastrin, insulin) or neurotransmitters/neuromodulators (e.g., VIP).
Purpose of the Study:
- To summarize the current understanding of gastrointestinal peptides.
- To highlight their diverse origins, functions, and isolation methods.
Main Methods:
- Review of existing literature on gastrointestinal peptides.
- Discussion of isolation techniques including bioassays and amino-acid composition analysis.
Main Results:
- Peptides are found in gastrointestinal endocrine cells and nerve cells.
- Distinct chemical structures correlate with specific biological actions.
- Several related peptide families have been recognized.
Conclusions:
- Gastrointestinal peptides play crucial roles as hormones and neurotransmitters.
- Advances in isolation techniques facilitate the study of these peptides.
- Understanding peptide families aids in elucidating their biological functions.