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肝性脑病发病机制的新进展 被引量:11

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摘要 肝性脑病的发病机制较复杂,在氨中毒、氨基酸失衡、假性神经递质、γ-氨基丁酸(GABA)等学说基础上,在氧化应激等方面又有了新进展。现简述如下。一、星形细胞的肿胀和轻微脑水肿体外研究发现,当脑细胞暴露于氨中.星形细胞水肿,表现出类似于所谓的AlzheimerⅡ型细胞的形态学改变。谷氨酰胺合成酶主要存在于星形细胞。肝硬化和其他高血氨状态下,星形细胞中聚集的具有渗透活性的谷氨酰胺导致轻微脑水肿的发生。
作者 刘厚钰 石虹
出处 《现代消化及介入诊疗》 2009年第2期92-94,共3页 Modern Interventional Diagnosis and Treatment in Gastroenterology
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