Immunohistochemical localization of growth factor-regulated channel (GRC) in human tissues.

Abstract:

:Insulin-like growth factor-I activates a calcium-permeable cation channel GRC (growth factor-regulated channel). In the present study, we investigated the immunohistochemical localization of GRC in human tissues using a polyclonal anti-GRC antibody. Immunoreactive GRC was detected in the stomach, duodenum, large intestine and prostate. In these tissues, GRC-expressing cells were distributed solitarily in the epithelium and coexpressed chromogranin-A, a marker of neuroendocrine cells. GRC was also expressed in the epithelium of the pancreatic duct, mammary gland, parotid gland, and submandibular gland. Epithelial cells of the renal tubule and the tracheal gland were also stained with anti-GRC antibody. In the lung, alveolar macrophages expressed GRC. In the brain, Purkinje cells of the cerebellum and arachnoid cells of the meningitis expressed GRC. These results indicate that GRC is expressed in restricted types of cells in particular tissues, and that GRC may modulate calcium entry in these cells.

journal_name

Endocr J

journal_title

Endocrine journal

authors

Kowase T,Nakazato Y,Yoko-O H,Morikawa A,Kojima I

doi

10.1507/endocrj.49.349

subject

Has Abstract

pub_date

2002-06-01 00:00:00

pages

349-55

issue

3

eissn

0918-8959

issn

1348-4540

journal_volume

49

pub_type

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