Sexually dimorphic age‐related molecular differences in the entorhinal cortex of cognitively intact elderly: Relation to early Alzheimer's changes

内嗅皮质 雌激素 心理学 性二态性 认知 海马体 内科学 阿尔茨海默病 内分泌学 皮质(解剖学) 胆碱能的 神经科学 生物 疾病 医学
作者
Xinlu Chen,Luuk E de Vries,Yuandong Hu,Juliet van Iersel,Kai He,Joop van Heerikhuize,Rawien Balesar,D.F. Swaab,Ai‐Min Bao
出处
期刊:Alzheimers & Dementia [Wiley]
卷期号:19 (9): 3848-3857 被引量:3
标识
DOI:10.1002/alz.13037
摘要

Women are more vulnerable to Alzheimer's disease (AD) than men. The entorhinal cortex (EC) is one of the earliest structures affected in AD. We identified in cognitively intact elderly different molecular changes in the EC in relation to age.Changes in 12 characteristic molecules in relation to age were determined by quantitative immunohistochemistry or in situ hybridization in the EC. They were arbitrarily grouped into sex steroid-related molecules, markers of neuronal activity, neurotransmitter-related molecules, and cholinergic activity-related molecules.The changes in molecules indicated increasing local estrogenic and neuronal activity accompanied by a higher and faster hyperphosphorylated tau accumulation in women's EC in relation to age, versus a mainly stable local estrogenic/androgenic and neuronal activity in men's EC.EC employs a different neurobiological strategy in women and men to maintain cognitive function, which seems to be accompanied by an earlier start of AD in women.Local estrogen system is activated with age only in women's entorhinal cortex (EC). EC neuronal activity increased with age only in elderly women with intact cognition. Men and women have different molecular strategies to retain cognition with aging. P-tau accumulation in the EC was higher and faster in cognitively intact elderly women.
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