Neuroendocrine regulatory peptide-2 stimulates glucose-induced insulin secretion in vivo and in vitro.
Neuroendocrine regulatory peptide-2 stimulates glucose-induced insulin secretion in vivo and in vitro.
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神经内分泌调节肽-2 在体内和体外刺激葡萄糖诱导的胰岛素分泌。
DOI:
10.1016/j.bbrc.2012.10.073
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发表时间:
2012
期刊:
影响因子:
--
通讯作者:
Nakazato M
中科院分区:
文献类型:
--
作者:
Moin AS;Yamaguchi H;Rhee M;Kim JW;Toshinai K;Waise TM;Naznin F;Matsuo T;Sasaki K;Minamino N;Yoon KH;Nakazato M
Neuroendocrine regulatory peptide (NERP)-2, recently identified as a bioactive peptide involved in vasopressin secretion and feeding regulation in the central nervous system, is abundantly expressed in endocrine cells in peripheral tissues. To explore the physiological roles of NERP-2 in the pancreas, we examined its effects on insulin secretion. NERP-2 increased glucose-stimulated insulin secretion (GSIS) in a dose-dependent manner, with a lowest effective dose of 10−7M, from the pancreatic β-cell line MIN6 and isolated mouse pancreatic islets. NERP-2 did not affect insulin secretion under the low-glucose conditions. Neither NERP-1 nor NERP-2–Gly (nonamidated NERP-2) stimulated insulin secretion. NERP-2 significantly augmented GSIS after intravenous administration to anesthetized rats or intraperitoneal injection to conscious mice. We detected NERP-2 in pancreatic islets, where it co-localized extensively with insulin. Calcium-imaging analysis demonstrated that NERP-2 increased the calcium influx in MIN6 cells. These findings reveal that NERP-2 regulates GSIS by elevating intracellular calcium concentrations.
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DOI:
--
发表时间:
1992
期刊:
Brain Research. Molecular Brain Research
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:
2005
期刊:
Acta diabetologia latina
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DOI:
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发表时间:
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DOI:
10.1210/en.2005-0588
发表时间:
2005
期刊:
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通讯作者:
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