Liver, an important regulator of metabolic homeostasis, is critical for healthy brain function. In particular, age-related neurodegenerative diseases seriously reduce the quality of life for the elderly. As population aging progresses rapidly, unraveling the mechanisms that effectively delay aging has become critical. Appropriate exercise is reported to improve aging-related cognitive impairment. Whereas current studies focused on exploring the effect of exercise on the aging brain itself, ignoring the persistent effects of peripheral organs on the brain through the blood circulation. The aim of this paper is to summarize the communication and aging processes of the liver and brain and to emphasize the metabolic mechanisms of the liver-brain axis about exercise ameliorating aging-related neurodegenerative diseases. A comprehensive understanding of the potential mechanisms about exercise ameliorating aging is critical for improving adaptation to age-related brain changes and formulating effective interventions against age-related cognitive decline.
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http://dx.doi.org/10.1002/jcp.31287 | DOI Listing |
Ann Neurol
January 2025
Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Medical Psychology, Berlin, Germany.
Objective: Despite the overwhelming evidence for profound and longstanding effects of early-life stress (ELS) on inflammation, brain structure, and molecular aging, its impact on human brain aging and risk for neurodegenerative disease is poorly understood. We examined the impact of ELS severity in interaction with age on blood-based markers of neuroinflammation and neurodegeneration, brain volumes, and cognitive function in middle-aged women.
Methods: We recruited 179 women (aged 30-60 years) with and without ELS exposure before the onset of puberty.
Alzheimers Dement
December 2024
Princeton University, Princeton, NJ, USA
Background: Studying brain reserve — the brain’s resilience to age‐related changes or damage — is crucial for understanding protective mechanisms against cognitive decline. The cerebellum may be a key region in brain reserve, but it has been historically understudied. This investigation delves into this critical area within the largest aging multi‐cohort to date.
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December 2024
University of Colorado Boulder, Boulder, CO, USA
Background: Frailty is a complex clinical state that is associated with poorer health outcomes and increased dementia risk in older adults. It is routinely measured using the Frailty Index, which is a proportional score based on the number of ‘deficits’ that an individual has. Whilst such measures are useful for risk assessment, the aggregation of highly heterogeneous deficit profiles in genetic studies may obscure important insights into the underlying biology of frailty.
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December 2024
Division of Geriatrics, Department of Medicine, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA
Background: Non‐Hispanic Black Americans (BA) have increased prevalence of cardiovascular disease (CVD) risk factors and elevated risk for end‐stage renal disease (ESRD). CVD risk factors, and potentially ESRD, heighten dementia risk; however, the association of CVD risk and kidney function to cognition in cognitively unimpaired (CU) BA adults remains understudied. We tested whether global CVD risk, individual CVD risk factors, and less healthy kidney function moderated associations between age and cognitive performance in middle‐aged to older adult BAs who were CU at baseline.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Barcelonaβeta Brain Research Center (BBRC), Pasqual Maragall Foundation, Barcelona, Spain
Background: Leukocyte telomere length (LTL) serves as a proxy for tissue‐specific TL and peripheral immune aging. Its association with aging‐related brain endophenotypes, cognitive functioning, and Alzheimer's disease (AD) risk is established, but the underlying molecular mechanisms remain elusive. Investigating LTL's association with AD biomarkers is crucial for identifying its role in brain resilience and disease progression.
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