Sex differences on tau, astrocytic, and neurodegenerative plasma biomarkers.

IF 3.4 3区 医学 Q2 NEUROSCIENCES
Jacob Labonte, Michael A Sugarman, Erika Pettway, Henrik Zetterberg, Kaj Blennow, Nicholas J Ashton, Thomas K Karikari, Hugo J Aparicio, Brandon Frank, Yorghos Tripodis, Brett Martin, Joseph N Palmisano, Eric G Steinberg, Irene Simkin, Lindsay A Farrer, Gyungah R Jun, Katherine W Turk, Andrew E Budson, Maureen K O'Connor, Rhoda Au, Lee E Goldstein, Robert A Stern, Thor D Stein, Ann C McKee, Wei Qiao Qiu, Jesse Mez, Sarah J Banks, Michael L Alosco
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引用次数: 0

Abstract

BackgroundSex differences have consistently been identified on autopsy, neuroimaging, and cerebrospinal fluid outcomes related to Alzheimer's disease (AD), but the exact mechanisms for these associations are unclear. Blood-based biomarkers are practical alternatives for the investigation of mechanisms of AD, in addition to accurate disease detection and monitoring.ObjectiveThe objective of this study was to examine sex differences across a panel of blood-based plasma biomarkers in participants with and without cognitive impairment due to AD.MethodsPlasma samples were collected from 567 participants from across the AD diagnostic continuum (i.e., normal cognition (NC), mild cognitive impairment (MCI), and dementia) and analyzed for glial fibrillary acidic protein (GFAP), neurofilament light (NfL), phosphorylated tau at threonine 181 (p-tau181), and total tau (t-tau). Baseline and longitudinal analyses evaluated for any significant associations between sex and AD-related plasma biomarkers.ResultsFemales were found to have higher plasma GFAP compared to males at baseline regardless of cognitive diagnosis. Among those with AD dementia, females were also found to have higher NfL levels compared to males. Longitudinal analyses found that higher plasma NfL at baseline was associated with an increased risk of worsening AD dementia status only in females. No significant findings were observed for p-tau181 or t-tau.ConclusionsThis study found significant sex differences in plasma biomarkers of GFAP and NfL. Further research is needed to better understand the underlying mechanisms mediating these differences.

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来源期刊
Journal of Alzheimer's Disease
Journal of Alzheimer's Disease 医学-神经科学
CiteScore
6.40
自引率
7.50%
发文量
1327
审稿时长
2 months
期刊介绍: The Journal of Alzheimer''s Disease (JAD) is an international multidisciplinary journal to facilitate progress in understanding the etiology, pathogenesis, epidemiology, genetics, behavior, treatment and psychology of Alzheimer''s disease. The journal publishes research reports, reviews, short communications, hypotheses, ethics reviews, book reviews, and letters-to-the-editor. The journal is dedicated to providing an open forum for original research that will expedite our fundamental understanding of Alzheimer''s disease.
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