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首页> 外文期刊>The European Journal of Neuroscience >GABA receptors in Schwann cells influence proliferation and myelin protein expression.
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GABA receptors in Schwann cells influence proliferation and myelin protein expression.

机译:雪旺细胞中的GABA受体影响增殖和髓磷脂蛋白表达。

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Abstract The location and the role of gamma-aminobutyric acid type B (GABA(B)) receptors in the central nervous system have recently received considerable attention, whilst relatively little is known regarding the peripheral nervous system. In this regard, here we demonstrate for the first time that GABA(B) receptor isoforms [i.e. GABA(B(1)) and GABA(B(2))] are specifically localized in the rat Schwann cell population of the sciatic nerve. Using the selective GABA(B) agonist [i.e. (-)-baclofen] and the antagonists (i.e. CGP 62349, CGP 56999 A, CGP 55845 A), such receptors are shown to be functionally active and negatively coupled to the adenylate cyclase system. Furthermore, exposure of cultured Schwann cells to (-)-baclofen inhibits their proliferation and reduces the synthesis of specific myelin proteins (i.e. glycoprotein Po, peripheral myelin protein 22, myelin-associated glycoprotein, connexin 32), providing evidence for a physiological role of GABA(B) receptors in the glial cells of the peripheral nervous system.
机译:摘要γ-氨基丁酸B型(GABA(B))受体在中枢神经系统中的位置和作用最近受到了相当大的关注,而对周围神经系统的了解却很少。在这方面,我们首次证明GABA(B)受体同工型[即GABA(B(1))和GABA(B(2))]具体位于大鼠坐骨神经雪旺细胞群体中。使用选择性GABA(B)激动剂[即(-)-baclofen]和拮抗剂(即CGP 62349,CGP 56999 A,CGP 55845 A),这些受体显示具有功能活性,并且与腺苷酸环化酶系统负相关。此外,将培养的施万氏细胞暴露于(-)-baclofen会抑制其增殖并减少特定髓磷脂蛋白(即糖蛋白Po,外周髓磷脂蛋白22,髓磷脂相关糖蛋白,连接蛋白32)的合成,从而提供了生理作用的证据。周围神经系统神经胶质细胞中的GABA(B)受体。

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