Abstract
We have localized secretin in a morphologically distinctive endocrine cell scattered in the epithelium covering the villi and uppermost crypts of the human duodenum and jejunum. The human secretin cell was characterized by relatively large (mean diameter 299 nm±69 SD), fairly irregular granules, the majority of which showed homogeneous distribution of secretin and chromogranin A immunolabelling in a structurally homogeneous core. Other granules had a targetoid pattern due to an inner, argyrophobe, secretin-immunoreactive body surrounded by an argyrophil, chromogranin A immunoreactive mantle. These targetoid granules represent a distinctive ultrastructural marker of the secretin cell. Secretin cell granules have been shown to react with chromogranin A antibodies and Grimelius' silver, while lacking chromogranin B immunoreactivity. About 1/3 of secretin cells also showed serotonin immunostaining.
| Original language | English |
|---|---|
| Pages (from-to) | 113-120 |
| Number of pages | 8 |
| Journal | Histochemistry |
| Volume | 94 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Jun 1990 |
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ASJC Scopus subject areas
- Anatomy
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Ultrastructural identification of human secretin cells by the immunogold technique. Their costorage of chromogranin A and serotonin. / Usellini, L.; Finzi, G.; Riva, C.; Capella, C.; Mochizuki, T.; Yanaihara, C.; Yanaihara, N.; Solcia, E.
In: Histochemistry, Vol. 94, No. 2, 06.1990, p. 113-120.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Ultrastructural identification of human secretin cells by the immunogold technique. Their costorage of chromogranin A and serotonin
AU - Usellini, L.
AU - Finzi, G.
AU - Riva, C.
AU - Capella, C.
AU - Mochizuki, T.
AU - Yanaihara, C.
AU - Yanaihara, N.
AU - Solcia, E.
PY - 1990/6
Y1 - 1990/6
N2 - We have localized secretin in a morphologically distinctive endocrine cell scattered in the epithelium covering the villi and uppermost crypts of the human duodenum and jejunum. The human secretin cell was characterized by relatively large (mean diameter 299 nm±69 SD), fairly irregular granules, the majority of which showed homogeneous distribution of secretin and chromogranin A immunolabelling in a structurally homogeneous core. Other granules had a targetoid pattern due to an inner, argyrophobe, secretin-immunoreactive body surrounded by an argyrophil, chromogranin A immunoreactive mantle. These targetoid granules represent a distinctive ultrastructural marker of the secretin cell. Secretin cell granules have been shown to react with chromogranin A antibodies and Grimelius' silver, while lacking chromogranin B immunoreactivity. About 1/3 of secretin cells also showed serotonin immunostaining.
AB - We have localized secretin in a morphologically distinctive endocrine cell scattered in the epithelium covering the villi and uppermost crypts of the human duodenum and jejunum. The human secretin cell was characterized by relatively large (mean diameter 299 nm±69 SD), fairly irregular granules, the majority of which showed homogeneous distribution of secretin and chromogranin A immunolabelling in a structurally homogeneous core. Other granules had a targetoid pattern due to an inner, argyrophobe, secretin-immunoreactive body surrounded by an argyrophil, chromogranin A immunoreactive mantle. These targetoid granules represent a distinctive ultrastructural marker of the secretin cell. Secretin cell granules have been shown to react with chromogranin A antibodies and Grimelius' silver, while lacking chromogranin B immunoreactivity. About 1/3 of secretin cells also showed serotonin immunostaining.
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U2 - 10.1007/BF02440176
DO - 10.1007/BF02440176
M3 - Article
VL - 94
SP - 113
EP - 120
JO - Histochemistry and Cell Biology
JF - Histochemistry and Cell Biology
SN - 0948-6143
IS - 2
ER -