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Article type: Review Article
Authors: Johnson, Carrie E.a | Duncan, Marilyn J.b | Murphy, M. Paula; c; *
Affiliations: [a] University of Kentucky, College of Medicine, Department of Molecular and Cellular Biochemistry, Lexington, KY, USA | [b] University of Kentucky, College of Medicine, Department of Neuroscience, Lexington, KY, USA | [c] University of Kentucky, Sanders-Brown Center on Aging, Lexington, KY, USA
Correspondence: [*] Correspondence to: M. Paul Murphy, MA, PhD, Professor of Molecular and Cellular Biochemistry, Associate Director for Education, Sanders-Brown Center on Aging, 541 Lee Todd Jr. Building, 789 South Limestone Street, Lexington, KY 40536-0596, USA. Tel.: +1 859 218 3811; E-mail: michael.murphy@uky.edu.
Abstract: Alzheimer’s disease (AD) affects more women than men, with women throughout the menopausal transition potentially being the most under researched and at-risk group. Sleep disruptions, which are an established risk factor for AD, increase in prevalence with normal aging and are exacerbated in women during menopause. Sex differences showing more disrupted sleep patterns and increased AD pathology in women and female animal models have been established in literature, with much emphasis placed on loss of circulating gonadal hormones with age. Interestingly, increases in gonadotropins such as follicle stimulating hormone are emerging to be a major contributor to AD pathogenesis and may also play a role in sleep disruption, perhaps in combination with other lesser studied hormones. Several sleep influencing regions of the brain appear to be affected early in AD progression and some may exhibit sexual dimorphisms that may contribute to increased sleep disruptions in women with age. Additionally, some of the most common sleep disorders, as well as multiple health conditions that impair sleep quality, are more prevalent and more severe in women. These conditions are often comorbid with AD and have bi-directional relationships that contribute synergistically to cognitive decline and neuropathology. The association during aging of increased sleep disruption and sleep disorders, dramatic hormonal changes during and after menopause, and increased AD pathology may be interacting and contributing factors that lead to the increased number of women living with AD.
Keywords: Alzheimer’s disease, hormones, menopause, sex differences, sleep, women
DOI: 10.3233/JAD-230527
Journal: Journal of Alzheimer's Disease, vol. 97, no. 1, pp. 31-74, 2024
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