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Metabotropic glutamate receptor subtype 5 antagonists MPEP and MTEP.

机译:代谢型谷氨酸受体亚型5拮抗剂MPEP和MTEP。

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摘要

Glutamate regulates the function of central nervous system (CNS), in part, through the cAMP and/or IP3/DAG second messenger-associated metabotropic glutamate receptors (mGluRs). The mGluR5 antagonist 2-methyl-6-(phenylethynyl)-pyridine (MPEP) has been extensively used to elucidate potential physiological and pathophysiological functions of mGluR5. Unfortunately, recent evidence indicates significant non-specific actions of MPEP, including inhibition of NMDA receptors. In contrast, in vivo and in vitro characterization of the newer mGluR5 antagonist 3-[(2-methyl-1,3-thiazol-4-yl)ethynyl]pyridine (MTEP) indicates that it is more highly selective for mGluR5 over mGluR1, has no effect on other mGluR subtypes, and has fewer off-target effects than MPEP. This article reviews literature on both of these mGluR5 antagonists, which suggests their possible utility in neurodegeneration, addiction, anxiety and pain management.
机译:谷氨酸部分地通过cAMP和/或IP3 / DAG第二信使相关的代谢型谷氨酸受体(mGluRs)来调节中枢神经系统(CNS)的功能。 mGluR5拮抗剂2-甲基-6-(苯基乙炔基)-吡啶(MPEP)已被广泛用于阐明mGluR5的潜在生理和病理生理功能。不幸的是,最近的证据表明,MPEP具有明显的非特异性作用,包括抑制NMDA受体。相比之下,较新的mGluR5拮抗剂3-[((2-甲基-1,3-噻唑-4-基)乙炔基]吡啶(MTEP)的体内和体外表征表明,它对mGluR5的选择性高于对mGluR1的选择性,对其他mGluR亚型没有影响,并且脱靶效应比MPEP少。本文回顾了有关这两种mGluR5拮抗剂的文献,这表明它们在神经退行性疾病,成瘾,焦虑和疼痛管理中的可能用途。

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