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High-frequency repetitive transcranial magnetic stimulation upregulates BDNF expression and promotes synaptogenesis in mouse models of Parkinson's disease

2 months 1 week ago
Synaptic dysfunction exists before symptoms occur in Parkinson's disease, and restoring synaptic function as a promising therapeutic approach. Brain-derived neurotrophic factor serves as a key neuroregulatory factor in regulating synaptic function. Studies have shown that the protein levels of brain-derived neurotrophic factor is low in Parkinson's disease mice. However, repetitive transcranial magnetic stimulation (rTMS) can mitigate this decline. We explored the protective role of rTMS on...
Dongdong Chen

Microglial STING is a central safeguard against neurological decline with age

2 months 1 week ago
Functional decline of the central nervous system (CNS) is driven by the breakdown of the blood-brain barrier (BBB) and attendant inflammation, all hallmarks of age-related neurodegeneration. Despite intense interest in how the cyclic GMP-AMP synthase (cGAS)-stimulator of interferon genes (STING) pathway impacts neurodegenerative processes in aging, its role in shaping these features of CNS fate during physiological aging remains unclear. Here, using physiologically aged mice, we uncovered an...
Katherine B Sulka

Latent Cognitive Profiles and Demographic Determinants in Older Adults without Dementia: A National Cross-Sectional Study

2 months 1 week ago
CONCLUSIONS AND IMPLICATIONS: About half of older adults exhibit domain-specific deficits, suggesting tailored interventions are essential. Profile 5 needs comprehensive strategies, whereas orientation-focused training could benefit profiles 2, 3, and 4. Demographic factors-particularly age, ethnicity, and income-should guide customization to enhance intervention participation and adherence.
Jiaying Li

"Aging and epigenetic implications in radiotherapy: The promise of BNCT"

2 months 1 week ago
Although cancer treatment strategies have made considerable progress in recent decades, the challenge of selectively killing tumor cells while minimizing damage to healthy tissue remains. Radiotherapy (RT) continues to be crucial for tumor growth control when combined with surgery, chemotherapy, and immunotherapy. RT effectiveness depends on factors such as cancer type, tumor features, and the choice of external or internal treatment. Given its non-invasive nature and low systemic toxicity, RT...
Chiara Papulino

Cell-death pathways and tau-associated neuronal vulnerability in Alzheimer's disease

2 months 1 week ago
Neuronal loss is the ultimate driver of neural system dysfunction in Alzheimer's disease (AD). We used single-nucleus RNA sequencing and neuropathological phenotyping to elucidate mechanisms of neurodegeneration in AD by identifying vulnerable neuronal populations and probing for their differentially expressed genes. Evidenced by transcriptomic analyses and quantitative tau immunoassays of human AD and non-AD brain tissue, we identified a neuronal population especially vulnerable to tau...
Gen Lin

Biomarkers of Cellular Senescence in Type 2 Diabetes Mellitus

2 months 1 week ago
Although animal studies have linked cellular senescence to the pathogenesis and complications of type 2 diabetes mellitus (T2DM), there is a paucity of corroborating data in humans. Thus, we measured a previously validated marker for senescent cell burden in humans, T-cell expression of p16 mRNA, along with additional biomarkers, to compare the senescence phenotypes of postmenopausal control (lean, N = 37) and T2DM (N = 27) participants. To control for effects of obesity alone, we included a...
Caroline Hoong

Processivity and BDNF-dependent modulation of signalling endosome axonal transport are impaired in mice with advanced age

2 months 1 week ago
A healthy nervous system is reliant upon an efficient transport network to deliver essential cargoes throughout the extensive and polarised architecture of neurons. The trafficking of cargoes, such as organelles and proteins, is particularly challenging within the long projections of neurons, which, in the case of axons, can be more than four orders of magnitude longer than cell bodies. It is therefore unsurprising that disruptions in axonal transport have been reported across neurological...
David Villarroel-Campos

Evaluating the effectiveness of an exercise program based on the Adapted Utilitarian Judo program by analyzing fall competence in older adults

2 months 1 week ago
Population aging increases the risk of falls, particularly among postmenopausal women, which can negatively impact their quality of life. Research suggests that multifactorial exercise programmes can help reduce this risk. This study evaluates the effectiveness of an exercise program based on Adapted Utilitarian Judo (JUA) in enhancing older adults' ability to safely manage falls; in this study called "fall competence". Fall competence can be defined as having the knowledge how to fall safely,...
Marta Ortiz-Molina

The memory- and cognition-facilitating effects of spermidine in aging and aging-related disorders

2 months 1 week ago
Spermidine is a natural polyamine found in living organisms. In human, the level of spermidine declines with aging. Emerging lines of evidence indicates that supplementation of spermidine favors the improvement of memory performance and cognition function. In this article, recent findings regarding the metabolism of spermidine under pathophysiological conditions are discussed. This review emphasizes the recent mechanistic insights into the memory- and cognition-facilitating effects of...
Mengjie Zou

Senolytic effects of a modified Gingerenone A

2 months 1 week ago
Senescent cells accumulate with aging and are associated with several age-associated diseases and functional declines. Eliminating senescent cells with senolytics improves aging phenotypes in mouse models and may improve the health of people with chronic diseases. To date, very few senotherapeutic (senolytics and senomorphics) compounds have been identified. In a recent study, we reported that gingerenone A (GinA) has a senolytic effect via mechanisms including the activation of caspase-3...
Ruin Moaddel

Ageing is associated with exaggerated overstaying in foraging behaviour

2 months 1 week ago
People constantly decide how much time to invest in rewarding activities. Foraging tasks assess this decision-making by measuring when individuals switch between contexts. People typically perform suboptimally in these tasks, largely due to overstaying, but it remains unclear whether this tendency changes with age independently of cognitive abilities and mental health factors. Previous research showing increased sensitivity to the opportunity cost of time in older adults predicts less...
Noham Wolpe

Citrinin delays muscle aging and extends lifespan in C. elegans and prevents senescence in C2C12 through SKN-1/Nrf2 activation

2 months 1 week ago
Sarcopenia, a condition characterized by the loss of muscle mass and function with aging, is linked to various health issues including diabetes and increased risk of falls and fractures. Currently, there is no FDA-approved treatment exists for sarcopenia. Citrinin, a natural compound present in daily dietary sources such as grains, has not been well characterized for its biological effects on muscle aging. Here, we found that citrinin exhibits beneficial effects in delaying muscle aging in both...
Yejin Cho