Abstract:
:Close contacts between endocrine insular cells and exocrine acinar, centroacinar and ductular cells occur frequently in the rat pancreas as seen by both light and electron microscopy. Islets of Langerhans are surrounded incompletely by a thin connective tissue capsule or mantle but numerous exocrine-endocrine cell contacts occur at the periphery, which is irregular with considerable "intermingling" of the two cell types. Centroacinar and ductular cells are seen to be in contact with all endocrine cell types but most commonly insulin-secreting B-cells. The basal surface of centroacinar cells in the region of contact may be extensive, sometimes with overlap of basal processes of these cells and their lateral extension between acinar and insular cells. The areas of contact contain no connective tissue or basal lamina and show no surface specializations. The presence of both the "open" and "closed" type of enteroendocrine cells within acini is confirmed, some also being in contact with centroacinar cells. The functional significance of these exo-endocrine cell contacts is discussed in terms of the endocrine-acinar portal system, possible direct paracrine secretion, compartmentalization within the islet, and the known effects of islet hormones on exocrine secretion. Also relevant is the developmental origin of islets from ductal tissue and the cellular origin of some tumours, e.g., insulinomas, from duct cells.
journal_name
Histol Histopatholjournal_title
Histology and histopathologyauthors
Leeson TS,Leeson Rsubject
Has Abstractpub_date
1986-01-01 00:00:00pages
33-42issue
1eissn
0213-3911issn
1699-5848journal_volume
1pub_type
杂志文章abstract::Shotgun pellets containing bismuth (Bi) are widely used and may cause a rather intense exposure of some wild animals to Bi. A Bi shotgun pellet was implanted intramuscularly in the triceps surae muscle of 18 adult male Wistar rats. Another group of 9 animals had a Bi shotgun pellet implanted intracranially in the neoc...
journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-18.781
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journal_title:Histology and histopathology
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journal_title:Histology and histopathology
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journal_title:Histology and histopathology
pub_type: 杂志文章
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-18.1115
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journal_title:Histology and histopathology
pub_type: 杂志文章,评审
doi:
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:
更新日期:1993-07-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章,评审
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更新日期:2001-04-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章,评审
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更新日期:2002-01-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章,评审
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:
更新日期:1994-07-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章,评审
doi:10.14670/HH-18-202
更新日期:2020-07-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-19.129
更新日期:2004-01-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
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journal_title:Histology and histopathology
pub_type: 杂志文章
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journal_title:Histology and histopathology
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-25.473
更新日期:2010-04-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-22.399
更新日期:2007-04-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-27.1079
更新日期:2012-08-01 00:00:00
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journal_title:Histology and histopathology
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journal_title:Histology and histopathology
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journal_title:Histology and histopathology
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journal_title:Histology and histopathology
pub_type: 杂志文章,评审
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journal_title:Histology and histopathology
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更新日期:2013-01-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-15.493
更新日期:2000-04-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
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更新日期:1994-01-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章,评审
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更新日期:2000-07-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 临床试验,杂志文章
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更新日期:2003-04-01 00:00:00
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journal_title:Histology and histopathology
pub_type: 杂志文章
doi:10.14670/HH-17.365
更新日期:2002-04-01 00:00:00