Proadrenomedullin N‐terminal 20 peptide (PAMP) elevates blood glucose levels via bombesin receptor in mice

Proadrenomedullin N‐terminal 20 peptide (PAMP) elevates blood glucose levels via bombesin receptor in mice
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肾上腺髓质素原 N 末端 20 肽 (PAMP) 通过小鼠铃蟾肽受体提高血糖水平

DOI:
10.1016/s0014-5793(00)01529-5
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发表时间:
2000
期刊:
影响因子:
3.5
通讯作者:
M. Yoshikawa
M. Yoshikawa
中科院分区:
生物学3区
文献类型:
--
作者:
Kousaku Ohinata;A. Inui;A. Asakawa;K. Wada;Estuko Wada;M. Yoshikawa

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我们发现,在禁食小鼠的第三脑室内注射 10 nmol 剂量后,肾上腺髓质素原 N 末端 20 肽 (PAMP) 具有有效的高血糖作用。 PAMP 与铃蟾肽 (BN)(一种高血糖肽)有四个同源残基。 PAMP 对胃泌素释放肽偏好受体 (GRP-R) 和神经调节肽 B 偏好受体具有亲和力。 PAMP 诱导的高血糖效应被 GRP-R 特异性拮抗剂 [D-Phe6、Leu-NHEt13、des-Met14]-BN (6-14) 抑制,表明高血糖效应至少部分是通过 GRP-R 介导的。此外,α-肾上腺素能阻滞剂的预处理抑制了 PAMP 诱导的高血糖和高胰高血糖素血症,表明通过 α-肾上腺素能激活增加胰高血糖素分泌与 PAMP 的高血糖作用有关。
We found a potent hyperglycemic effect of proadrenomedullin N‐terminal 20 peptide (PAMP) after intra‐third cerebroventricular administration at a dose of 10 nmol in fasted mice. PAMP has four homologous residues with bombesin (BN), a hyperglycemic peptide. PAMP showed affinity for gastrin‐releasing peptide preferring receptor (GRP‐R) and neuromedin B preferring receptor. The PAMP‐induced hyperglycemic effect was inhibited by [D‐Phe6, Leu‐NHEt13, des‐Met14]‐BN (6–14), GRP‐R specific antagonist, indicating that the hyperglycemic effect is mediated at least in part via GRP‐R. Furthermore, pretreatment of α‐adrenergic blocker inhibited the PAMP‐induced hyperglycemia and hyperglucagonemia, suggesting that the increase of glucagon secretion through α‐adrenergic activation is involved in this hyperglycemic effect of PAMP.
DOI: 10.1210/mend-4-12-1956
发表时间: 1990-12
影响因子: --
作者:
E. Spindel;E. Giladi;Paul Brehm;Richard H. Goodman;Thomas P. Segerson
通讯作者: E. Spindel;E. Giladi;Paul Brehm;Richard H. Goodman;Thomas P. Segerson
两种哺乳动物铃蟾肽受体亚型之间的拮抗作用的肽结构要求不同。
DOI: --
发表时间: 1995
期刊: The Journal of pharmacology and experimental therapeutics.
影响因子: --
作者:
Lin,JT;Coy,DH;Mantey,SA;Jensen,RT
通讯作者: Jensen,RT