Lack of association between perlecan gene intron 6 BamHI polymorphism and risk of mitral valve prolapse in Taiwan Chinese

中國醫藥大學機構典藏 China Medical University Repository, Taiwan > 台中附設醫院 > 期刊論文 > Item 310903500/29047

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题名:	Lack of association between perlecan gene intron 6 BamHI polymorphism and risk of mitral valve prolapse in Taiwan Chinese
作者:	Chou, HT;Chen, YT;Wu, JY;Tsai, FJ
贡献者:	附設醫院內科部心臟科;China Med Coll Hosp, Dept Med, Div Cardiol, Taichung 404, Taiwan;China Med Coll Hosp, Dept Pediat, Taichung 404, Taiwan
日期:	2004
上传时间:	2010-09-24 14:19:44 (UTC+8)
出版者:	JAPAN HEART JOURNAL, SECOND DEPT OF INTERNAL MED
摘要:	In the present study, we use agmatine, an endogenous ligand, to investigate the role of imidazoline receptor in plasma glucose regulation in streptozotocin-induced diabetic rats (STZ-diabetic rats). After injection into the central lateral ventral (i.c.v.) of fasting STZ-diabetic rats for 30 min, agmatine produced plasma glucose lowering action in a concentration-dependent manner without alteration the mean arterial pressure (MAP). However, the plasma glucose was markedly raised in STZ-diabetic rats receiving similar injection of clonidine at dose (1 mumol/rat, i.c.v.) sufficient to lower MAP. Mediation of alpha(2)-adrenoceptor in this action of agmatine seems unlikely. The plasma glucose lowering action of agmatine (1 mumol/rat, i.c.v.) was abolished by the pretreatment with BU-224 at concentration (100 nmol/rat) sufficient to block cerebral I-2-imidazoline receptors. Also, this action of agmatine in STZ-diabetic rats disappeared by spinal cord truncation between C6 and C7. Activation of cerebral I-2-imidazoline receptor by agmatine can thus be considered for the lowering of plasma glucose. In conclusion, we suggest that an activation of I-2-imidazoline receptors in the brain may lower plasma glucose without insulin in animal. (C) 2004 Elsevier Ireland Ltd. All rights reserved.
關聯:	JAPANESE HEART JOURNAL 45(1):109-118
显示于类别:	[台中附設醫院] 期刊論文

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