Table 1.
Expression of gastrin peptides in normal adult mammalian tissue.a
| Tissue | Total translation product (pmol/g) | Precursor percentage |
|---|---|---|
| Gastrointestinal tract | ||
| Antral mucosa | 10 000 | 5 |
| Duodenal mucosa | 400 | 20 |
| Jejunal mucosa | 40 | 30 |
| Ileal mucosa | 20 | 85 |
| Colonic mucosa | 0.2 | 100 |
| Neuroendocrine tissue | ||
| Cerebellum | 5 | 20 |
| Vagal nerve | 8 | 10 |
| Adenohypophysis | 200 | 98 |
| Neurohypophysis | 30 | 5 |
| Adrenal medulla | 2 | 100 |
| Pancreas | 2 | 95 |
| Genital tract | ||
| Ovaries | 0.5 | 100 |
| Testicles | 6 | 100 |
| Spermatozoa | 2 | 55 |
| Respiratory tract | ||
| Bronchial mucosa | 0.3 | 100 |
a
Orders of magnitude based on examination of different mammalian species.