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Long-buried layers of saline permafrost seem to be accelerating climate change's transformation of the Arctic

Parkinson's disease (PD) is the second most prevalent neurodegenerative disorder, characterized by the substantial degeneration of nigral dopaminergic neurons, the accumulation of alpha-synuclein, and the intraneuronal formation of Lewy bodies. DJ-1 is a multifaceted protein that has been linked to the pathogenesis of neurodegenerative diseases. Recent research has highlighted a potential role for DJ-1 in PD. This protein plays a critical role in maintaining mitochondrial homeostasis, modulating...

Adult hippocampal neurogenesis in the dentate gyrus is well-defined in rodents, and its role in cognitive functions as well as its potential as a therapeutic target for neurodegenerative diseases such as Alzheimer's disease remain a topic of great scientific interest. In this study, we evaluated the effects of a novel small molecule, OXS-N1, on neurogenesis and behavior in C57Bl/6 wild-type and 5xFAD Alzheimer's disease model mice, which were tested independently at different ages. Modern,...

Ageing is the major risk factor for Alzheimer's disease (AD), the most common neurodegenerative disorder. DNA damage is a hallmark of ageing, particularly when occurring at telomeres, genomic regions vulnerable to oxidative damage and often challenging for the cell to repair. Here, we show that brains of 3xTg-AD mice, an established AD model characterized by amyloid-β (Aβ)-induced pathology, exhibit increased activation of DNA damage response (DDR) pathways at telomeres. Exposure of mouse...

Ageing is the major risk factor for Alzheimer's disease (AD), the most common neurodegenerative disorder. DNA damage is a hallmark of ageing, particularly when occurring at telomeres, genomic regions vulnerable to oxidative damage and often challenging for the cell to repair. Here, we show that brains of 3xTg-AD mice, an established AD model characterized by amyloid-β (Aβ)-induced pathology, exhibit increased activation of DNA damage response (DDR) pathways at telomeres. Exposure of mouse...

Alzheimer's disease (AD) is the most common neurodegenerative condition and continues to pose significant clinical and research challenges due to its complex causes and limited treatment success. Conventional therapies have primarily focused on amyloid-beta (Aβ) and tau proteins, but these efforts have yet to produce optimal results. This review explores emerging interdisciplinary strategies that integrate artificial intelligence (AI), small molecule drugs, and precision treatments to tackle...

Brain arteriolosclerosis, a prominent small vessel pathology in the aging brain, is associated with cognitive impairment. Understanding the link between arteriolosclerosis and neurodegeneration may be crucial towards unravelling pathways by which arteriosclerosis contributes to cognitive impairment. Using a novel magnetic resonance imaging (MRI) in-vivo classifier for ARTerioloSclerosis termed ARTS, we examined cross-sectional associations between ARTS, cortical thickness, and cognition. Data...

Aging is characterized as a process resulting in the structural and functional deterioration of several essential organs and tissues. This study aimed to determine the effects of normal aging on the cerebellum by using histological and histometric techniques. A total of 24 male Wistar albino rats were divided into three groups: young (4-6 weeks), adult (20-22 weeks), and old (22-24 months). Cerebellar tissue samples were treated using histological and immunohistochemical techniques. The slides...

Objective: To comprehensively evaluate the psychometric properties of the relatively new Everyday Ageism Scale. Methods: Data were from the 2021-2023 Experiences of Aging in Society project (N = 237, ages 50+, multiracial/multiethnic, 72.6% female). We assessed the multidimensional structure, reliability, and validity of the Everyday Ageism Scale. Results: Confirmatory factor analysis generally substantiated the three-factor structure of the Everyday Ageism Scale: exposure to ageist messages,...

Pulmonary Fibrosis (PF) is a life-threatening illness that is characterized by progressive scarring in the lung interstitium. There is an urgent need for new PF therapies because current treatments only slow down the progression of fibrosis, and the median life expectancy post-diagnosis is only 4-6 years. Since PF patients frequently exhibit telomere attrition, overexpressing telomerase, the enzyme responsible for synthesizing telomeres, represents a compelling therapeutic option. In this study,...

Sleep deprivation (SD) and aging are linked to chronic inflammation, a contributor to age-associated diseases. Circadian rhythms, governed by suprachiasmatic nucleus (SCN), regulate immune and inflammatory responses. While aging and SD elevate pro-inflammatory cytokines such as IL-1β, TNF-α, and IL-6, their impact on temporal dynamics of inflammation across tissues and age groups remains unclear. This study examines age-dependent effects of chronic total SD on daily expression rhythms of...