Adrenocortical Cells are the Site of Secretion and Action of Insulin-Like Growth Factors and TNF-Alpha
Adrenocortical Cells are the Site of Secretion and Action of Insulin-Like Growth Factors and TNF-Alpha
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肾上腺皮质细胞是胰岛素样生长因子和 TNF-α 的分泌和作用场所
DOI:
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发表时间:
1998
期刊:
影响因子:
--
通讯作者:
R. Voutilainen
中科院分区:
文献类型:
--
作者:
R. Voutilainen
Insulin-like growth factors I and/or II are expressed in adrenal cells, and modulate their proliferation and steroid hormone synthesis suggesting that they may function as paracrine/autocrine factors. In some species, at least ACTH induces insulin-like growth factor synthesis. Thus, these peptide growth factors mediate at least some of the effects of ACTH on adrenocortical cell proliferation and differentiation. Human fetal adrenals express insulin-like growth factor II gene abundantly and ACTH-dependently, while in adult adrenals, the expression is low and no ACTH dependent regulation has been demonstrated. Hormonally active adrenocortical carcinomas and virilizing adenomas express insulin-like growth factor II gene abundantly. This phenomenon is associated with reduced expression of two putative tumor suppressor genes (H19 and p57KIP2) locating on the same genomically imprinted locus on human chromosome 11p15.5. Tumor necrosis factor-alpha belongs to the cytokines which modulate hypothalamic-pituitary-adrenal axis. It is a potent inducer of ACTH secretion but, at the adrenal level, it seems to mainly inhibit ACTH-induced steroidogenesis and also insulin-like growth factor II expression. It is produced in adrenocortical steroidogenic cells in addition to macrophages, which suggests that tumor necrosis factor-alpha may have some autocrine/paracrine functions in the adrenal cortex.
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影响因子:
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作者:
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通讯作者:
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DOI:
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发表时间:
1990
期刊:
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影响因子:
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通讯作者:
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期刊:
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DOI:
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期刊:
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影响因子:
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通讯作者:
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