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白物质N-酸酸酶 (NAPSs) 和晚期阿尔茨海默病 (LOAD) 中的髓功能障碍:一个试点研究

Paul L Wood¹, Annika K Lagos¹, Alexis R Kastigar¹

¹Metabolomics Unit, College of Veterinary Medicine, Lincoln Memorial University, 6965 Cumberland Gap Pkwy., Harrogate, TN 37752, USA.

Life (Basel, Switzerland)

|January 28, 2026

概括

在周周结膜白质中,特定的大脑脂质的减少,N-酸酸酶 (NAPSs) 和N-酸酶 (NASer),是晚发性阿尔茨海默病 (LOAD) 中髓干扰的潜在脂质生物标志物.

科学领域:

神经科学是一个神经科学.
生物化学生物化学
利皮多米克 (Lipidomics) 是一种消化剂.

背景情况:

髓干扰是阿尔茨海默病 (AD) 的标志,可以通过组织学,蛋白质学和神经成像检测到.
脂质是重要的髓成分,它们的变化,特别是像N-酸酸胺类 (NAPSs) 这样的独特的大脑脂质,可能表明神经元应激和疾病进展.

研究的目的:

在晚发性阿尔茨海默氏病 (LOAD) 的背景下,调查N-酸酸酶 (NAPS) 和其代谢前体的变化.
为了确定与LOAD中髓破坏相关的潜在脂质生物标志物.

主要方法:

对NAPS 52:1 (PS 36:1-N16:0) 的量化,这是一个占主导地位的NAPS,在LOAD受试者和对照者的灰色和白色物质中.
代谢前体的测量:酸丁胆 (PC) 36:1,酸丁 (PS) 36:1,酸甘油36:1.
评价N-acylserine (NASer) 16:0水平,一个神经保护性的N-acyl氨基酸.

主要成果:

与对照组相比,NAPS 52:1的相对水平在LOAD受试者的灰质和白质中显著降低 (约为50%).
只有氨酸氨酸 (PS) 36:1的水平下降,特别是LOAD受试者的周周结膜白质 (PVWM).
在微量水平发现的N-acylserine (NASer) 16:0在LOAD受试者的PVWM中也有所下降.

结论:

周周结膜白质中NAPSs和NASer的降低水平作为LOAD中髓破坏的脂质生物标志物.
这些发现,以及先前关于改变的以太PS的报道,表明,血清糖脂代谢的综合干扰可能会导致痴呆症中神经元功能障碍.

关键词:

纳基酸酸酶 (NAPSs) 是一种酸酸酶.这种N-acylserines的含量很大.这是一种N-oleoylphosphatidylserine.这是一种N-palmitoylphosphatidylserine.在海马体内,海马体晚期发作的阿尔茨海默氏病 (LOAD)周周状的白质是什么

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