首页> 美国卫生研究院文献>Current Developments in Nutrition >Warfarin Treatment Alters Gas6 and Protein S Activity and Their Downstream Signaling Pathways in Brain and Stimulates Microglial Activity (P24-002-19)
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Warfarin Treatment Alters Gas6 and Protein S Activity and Their Downstream Signaling Pathways in Brain and Stimulates Microglial Activity (P24-002-19)

机译:华法林治疗可改变Gas6和Protein S活性及其在大脑中的下游信号通路并刺激小胶质细胞活性(P24-002-19)

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摘要

ObjectivesThere is now convincing evidence that vitamin K (VK) has important actions in the nervous system and cognition. Two VK-dependent proteins are closely linked to the brain namely Gas6 and protein S (PS). Functionally, both proteins are ligands for receptors of tyrosine kinases Tyro3, Axl, and Mer. In vitro, Gas6 and PS have been shown to possess pro-survival activity towards neurons and glia through stimulation of the extracellular signal-regulated (ERK) and serine-threonine (Akt) kinases pathways. In a previous study, targeted depletion of VK in brain induced by warfarin (W) treatment, a VK antagonist, resulted in cognitive and behavioral impairment. In the present study, we aimed to characterize the role of Gas6 and PS and their signaling pathways in W-treated rats fed or not with supplemental menaquinone-4 (MK-4), the principal K vitamer in brain.
机译:目标现在有令人信服的证据表明维生素K(VK)在神经系统和认知中具有重要作用。两种VK依赖性蛋白即Gas6和蛋白S(PS)与大脑紧密相连。在功能上,两种蛋白质都是酪氨酸激酶Tyro3,Axl和Mer受体的配体。在体外,Gas6和PS已显示出通过刺激细胞外信号调节(ERK)和丝氨酸-苏氨酸(Akt)激酶途径对神经元和神经胶质细胞具有促存活活性。在先前的研究中,由华法林(W)治疗(一种VK拮抗剂)诱导的脑中VK的定向耗竭导致认知和行为受损。在本研究中,我们旨在表征Gas6和PS在补充或不补充脑中主要K维生素Manaquinone-4(MK-4)的W治疗大鼠中的作用。

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