Glucosylceramide in humans.

Glucosylceramide in humans.
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人类中的葡萄糖神经酰胺。

DOI:
10.1007/978-1-4419-6741-1_11
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发表时间:
2010
影响因子:
--
通讯作者:
Cabot,MylesC
Cabot,MylesC
中科院分区:
医学4区
文献类型:
--
作者:
Messner,MariaC;Cabot,MylesC

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葡萄糖神经酰胺在哺乳动物细胞中具有独特而又不明确的作用。葡萄糖神经酰胺合成酶是一种将葡萄糖基片段置于神经酰胺上的酶,它的激活是产生更复杂的鞘糖脂(如乳糖神经酰胺和神经节苷)的第一步。在心血管疾病、糖尿病、皮肤病和癌症的反应中,细胞和组织中葡萄糖神经酰胺水平的改变被注意到。总的来说,葡萄糖神经酰胺的上调提供了细胞保护,并为某些细胞的增殖提供了条件。然而,长期过量的葡萄糖神经酰胺是有害的,如在人类戈谢病中所见。
Glucosylceramide has a unique and often ambiguous role in mammalian cells. Activation of glucosylceramide synthase, the enzyme that places a glucosyl moiety onto ceramide, is the first pathway-committed step to the production of more complex glycosphingolipids such as lactosylceramide and gangliosides. Alterations in the level of glucosylceramide are noted in cells and tissues in response to cardiovascular disease, diabetes, skin disorders and cancer. Overall, upregulation of glucosylceramide offers cellular protection and primes certain cells for proliferation. However, prolonged overabundance of glucosylceramide is detrimental, as seen in Gaucher disease in humans.
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