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

23 hours 34 minutes 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

23 hours 34 minutes 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

23 hours 34 minutes 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"

23 hours 34 minutes 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

1 day 23 hours 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

1 day 23 hours 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

1 day 23 hours 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

1 day 23 hours 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 days 23 hours 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 days 23 hours 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 days 23 hours 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 days 23 hours 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

Development of a multimorbidity health conditions outcome index for caloric restriction interventional studies in older adults: a preliminary investigation in an observational cohort study

2 days 23 hours ago
Using multiple sources, we provide the conceptual justification and statistical support for a multimorbidity outcome associated with obesity-related conditions, which we term the Health Conditions Index (HCI). This index was designed to capture the health effects of multi-year studies of caloric restriction for older adults with BMIs in the overweight or obesity classification. We used a subset of participants in the Health, Aging and Body Composition Cohort Study to evaluate multiple aspects of...
Michael E Miller

Ambulance clinicians' perspectives on interprofessional collaboration in prehospital emergency care for older patients with complex care needs: a mixed-methods study

2 days 23 hours ago
CONCLUSION: Addressing deficiencies in nighttime care coordination, improving access to comprehensive patient information, and strengthening communication pathways between healthcare providers are essential steps in improving interprofessional collaboration to strengthen prehospital care of older patients with complex care needs.
Ann-Therese Hedqvist

Proteomic signatures of corona and herpes viral antibodies identify IGDCC4 as a mediator of neurodegeneration

2 days 23 hours ago
Mechanisms underlying the dynamic relationships of viral infections and neurodegeneration warrant examination. Using a community-based cohort of older adults, the current study characterized the neurocognitive (cognitive functioning, brain volumes, Alzheimer's disease positron emission tomography, and plasma biomarkers) and plasma proteomic (7268 proteins) profiles of four common coronavirus and six herpesvirus antibody titers. Genetic inference techniques demonstrated the associations between...
Michael R Duggan

DNMT3A-dependent DNA methylation shapes the endothelial enhancer landscape

2 days 23 hours ago
DNA methylation plays a fundamental role in regulating transcription during development and differentiation. However, its functional role in the regulation of endothelial cell (EC) transcription during state transition, meaning the switch from an angiogenic to a quiescent cell state, has not been systematically studied. Here, we report the longitudinal changes of the DNA methylome over the lifetime of the murine pulmonary vasculature. We identified prominent alterations in hyper- and...
Stephanie Gehrs

Does Frailty Predict Cognitive and Functional Deficits After Nine Years?

2 days 23 hours ago
CONCLUSIONS: Higher age and lower education at baseline were predictors of cognitive and functional deficits after 9 years, whereas frailty was not. Further longitudinal studies should be conducted to elucidate the factors predicting cognitive and functional decline in low-and middle-income countries.
Beatriz Raz Franco de Santana

Molecular landscape of sex- and modality-specific exercise adaptation in human skeletal muscle through large-scale multi-omics integration

2 days 23 hours ago
We investigated the molecular mechanisms of exercise adaptations in human muscle by integrating genome, methylome, transcriptome, and proteome data from over 1,000 participants (2,340 muscle samples). We identified distinctive signatures associated with maximal oxygen consumption (VO(2max)), and multi-omics integration uncovered five key genes as robust exercise markers across layers, with transcription factors functioning as activators, synergizing with DNA methylation to regulate gene...
Macsue Jacques