Twenty-kilodalton human growth hormone (20K hGH) secretion from growth hormone-secreting pituitary adenoma cells in vitro.

Twenty-kilodalton human growth hormone (20K hGH) secretion from growth hormone-secreting pituitary adenoma cells in vitro.
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体外生长激素分泌垂体腺瘤细胞分泌二十千道尔顿人类生长激素 (20K hGH)。

DOI:
10.1507/endocrj.47.563
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发表时间:
2000
期刊:
影响因子:
2
通讯作者:
Y. Kato
Y. Kato
中科院分区:
医学4区
文献类型:
--
作者:
Y. Murakami;T. Mori;K. Koshimura;M. Kurosaki;A. Takenobu;Y. Hashimoto;Y. Kato

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循环中的人类生长激素 (GH) 由多种分子亚型组成。据报道,活动性肢端肥大症中循环非 22K hGH 和 20K hGH 的比例增加。在这项研究中,我们研究了体外培养的产生 GH 的人垂体腺瘤细胞释放 20K 和 22K hGH 的情况。培养取自 6 名肢端肥大症患者的垂体腺瘤细胞并进行灌注实验。通过最近开发的特定酶联免疫吸附测定法测定血清和灌注流出物中 20K 和 22K hGH 的浓度。体外%20K值变化范围较宽,从3.58%到8.72%,低于血清中的值(平均值+/-SD:6.57+/-1.88% vs 9.08+/-2.12%,P<0.05)。体外和体内%20K值之间无相关性(r=0.31,P>0.05)。 20K和22K hGH体外分泌量平行且强相关(r=0.953,P<0.001)。这些发现表明,不同的产生 GH 的垂体腺瘤细胞分泌不同量的 20K hGH,并且血清中 20K hGH 的比例可能受到 hGH 同工型代谢清除的影响。也有人提出,20K 和 22K hGH 可能是由产生 GH 的人垂体腺瘤细胞分泌的。
Circulating human growth hormone (GH) consists of several molecular isoforms. Increased proportion of circulating non-22K hGH and 20K hGH was reported in active acromegaly. In this study, we studied the release of 20K and 22K hGH from cultured GH-producing human pituitary adenoma cells in vitro. Pituitary adenoma cells obtained from 6 acromegalic patients were cultured and submitted to perifusion experiments. Concentrations of 20K and 22K hGH in the serum and the perifusion effluent were determined by specific enzyme-linked immunosorbent assays recently developed. The %20K value varied in a wide range from 3.58 to 8.72% in vitro and was lower than in the serum (mean+/-SD: 6.57+/-1.88% vs 9.08+/-2.12%, P<0.05). There was no correlation between the %20K values in vitro and in vivo (r=0.31, P>0.05). The in vitro secretions of 20K and 22K hGH were in parallel and strongly correlated (r=0.953, P<0.001). These findings suggest that different GH-producing pituitary adenoma cells secrete 20K hGH in variable amounts and that the proportion of 20K hGH in the serum might be affected by metabolic clearance of hGH isoforms. It was also suggested that 20K and 22K hGH might be secreted in toto from GH-producing human pituitary adenoma cells.
自发分泌期间和基础状态下循环生长激素的分子形式。
DOI: 10.1210/jcem-60-6-1216
发表时间: 1985
期刊: The Journal of clinical endocrinology and metabolism
影响因子: --
作者:
Baumann,G;Stolar,MW;Amburn,K
通讯作者: Amburn,K
20,000 道尔顿人类生长激素变体的缓慢代谢清除率:对生物活性的影响。
DOI: 10.1210/endo-117-4-1309
发表时间: 1985
期刊: Endocrinology
影响因子: 4.8
作者:
Baumann,G;Stolar,MW;Buchanan,TA
通讯作者: Buchanan,TA
体内分泌的人类生长激素的分子形式:分泌刺激的非特异性。
DOI: 10.1210/jcem-62-4-789
发表时间: 1986
期刊: The Journal of clinical endocrinology and metabolism
影响因子: --
作者:
Baumann,G;Stolar,MW
通讯作者: Stolar,MW
人类生长激素 DNA 序列和 mRNA 结构:可能的选择性剪接。
DOI: 10.1093/nar/9.15.3719
发表时间: 1981
影响因子: 14.9
作者:
DeNoto,FM;Moore,DD;Goodman,HM
通讯作者: Goodman,HM