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首页> 外文期刊>Cytokine >The role of ceramide in the modulation of intracellular Ca2+ levels by interleukin 1 beta in rat cortical synaptosomes.
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The role of ceramide in the modulation of intracellular Ca2+ levels by interleukin 1 beta in rat cortical synaptosomes.

机译:神经酰胺在大鼠皮质突触小体中通过白介素1β调节细胞内Ca2 +水平的作用。

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We recently demonstrated that the pro-inflammatory cytokine, interleukin 1beta (IL-1beta) elevates intracellular free Ca2+ levels ([Ca2+]i) in rat cortical synaptosomes in a manner involving activation of the IL-1 receptor and stimulation of p42 mitogen-activated protein (MAP) kinase. We now report that the effects of IL-1beta on [Ca2+]i are mimicked by the sphingolipid metabolite ceramide. In cortical synaptosomes ceramide elevates [Ca2+]i in a p42 MAP kinase-dependent manner, and we conclude that the effects of IL-1beta on Ca2+ homeostasis involve ceramide as an upstream component of the p42 MAP kinase pathway.
机译:我们最近证明,促炎细胞因子白介素1beta(IL-1beta)以涉及激活IL-1受体和刺激p42促分裂原激活的方式升高大鼠皮质突触小体中的细胞内游离Ca2 +水平([Ca2 +] i)。蛋白(MAP)激酶。现在我们报道,鞘脂代谢神经酰胺可模仿IL-1β对[Ca2 +] i的作用。在皮质突触小体中,神经酰胺以p42 MAP激酶依赖性方式升高[Ca2 +] i,我们得出的结论是,IL-1beta对Ca2 +稳态的影响涉及神经酰胺作为p42 MAP激酶途径的上游成分。

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