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Review and CME Lecture
因[42]。T a u蛋白磷酸受到磷酸化酶和蛋白磷酸酶的调节,两 cohort[J]. Anesthesiology,2009, 110(4): 796 -804.
者失衡是导致Tau蛋白磷酸化的主要原因。TAO G等[43]观察连 [5] Singh D, Rath GP, Dash HH,et al. Sevoflurane provides
续3d吸入3%七氟醚(每天2h)的幼鼠,其海马组织中T a u蛋
白发生过度磷酸化,并且G S K3-β活性增高,多项研究[44-46] better recovery as compared with isoflurane in children
都相继提出类似观点。G S K3β是一种重要磷酸化激酶,催化 undergoing spinal surgery[J]. Neurosurg Anesthesi-
T a u蛋白S E R396和404位点发生磷酸化。可见,七氟醚可以通 ol,2009,21(3):202–206.
过激活G S K3β,导致T a u蛋白发生过度磷酸化,形成纤维缠 [6] Istaphanous GK, Howard J, Nan X, , et al. Comparison of
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七氟醚还可通过激活细胞c a s p a s e[44],诱导细胞凋亡, [7] Lin D, Zuo Z. Isoflurane induces hippocampal cell injury and
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总之,七氟醚对认知功能影响的机制十分复杂,在对学 2011,61(8):1354–1359.
习记忆机制完全研究清楚之前,要想阐明七氟醚与学习记忆 [8] Liu W, Xu J, Wang H, et al. Isoflurane-induced spatial mem-
的关系有赖于后续大量体内、外实验和临床研究结果支撑, ory impairment by a mechanism independent of amyloid-
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是记忆形成与巩固的分子与细胞机制,在人类脑组织高度发 [10] Millar K, Asbury AJ, Bowman AW, et al. The effects of brief
育期接触麻醉药可造成不可逆损伤。目前大量研究证实七氟 sevoflurane-nitrous oxide anaesthesia upon children’s
醚会对小儿认知功能造成影响,这种影响随着药物浓度、吸 postoperative cognition and behaviour [J]. Anaesthe-
入时间等存在差异,而影响持续的时间以及是否可逆仍未有 sia,2006,61(6):541-547.
定论。同时,急需大样本、长时间临床来揭示两者的关系。 [11] 朱贵芹,朱霞,郑闽江,等.吸入麻醉药对儿童学习记忆的影响
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免,那么,预防和早期干预措施应成为今后研究的另一热 children[J]. Anesth,2013,27(4):493-499.
点。尽管有报道E P O[47]和姜黄素[48]对幼鼠进行预处理后将减 [13] Conreux F, Best O, Preckel MP,et Al. Electroencephalo-
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