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Long-lived mammals contain more phosphorylation sites in the SIRT6 C-terminus that enhance PARP1 interaction and resistance to oxidative stress
Sirtuin 6 (SIRT6) is a protein deacetylase and ribosyltransferase that is a vital hub for maintaining epigenetic homeostasis, regulating the transcriptome, and repairing DNA double stranded breaks (DSBs). Comprehensive proteomic profiling of the SIRT6 posttranslational landscape, however, remains elusive. The SIRT6 C-terminal domain contains multiple phosphorylation sites. We find that the presence and the use of these sites are strongly correlated with maximum lifespan across mammals....
Depressive symptoms and multiple markers of brain aging in community-dwelling older adults
Late-life depressive symptoms have been associated with structural brain changes and cognitive impairment, but prior studies have typically examined individual markers of brain aging in isolation. This study examined the associations between depressive symptoms and multiple markers of brain aging in a population-based cohort of community-dwelling older adults. Baseline data from 2,746 participants with complete data on depressive symptoms, neuroimaging measures, cognitive assessment, and...
Klotho deficiency and cognitive impairment in dialysis patients: mechanisms, clinical evidence, and therapeutic implications
Cognitive impairment is highly prevalent among patients with end-stage renal disease (ESRD), particularly those undergoing dialysis, and is associated with poor clinical outcomes and reduced quality of life. Emerging evidence suggests that Klotho, an anti-aging protein predominantly expressed in the kidney, plays a critical role in the pathophysiology of uremia-related cognitive dysfunction. This review summarizes current clinical and experimental evidence regarding Klotho deficiency in dialysis...
Creatine doesn't just build muscle. It may also help fight cancer
Scientists have discovered that creatine may strengthen one of the immune system's most important cancer-fighting pathways by energizing dendritic cells that activate killer T cells. The promising results could eventually help make immunotherapy more effective, but they have not yet been tested in human patients.
Can't stick to a diet? Intermittent fasting may be easier than counting calories for weight loss
Intermittent fasting helped people lose as much weight as calorie restriction, but without the same feeling of constantly controlling their food intake. Researchers say that difference could make fasting a more sustainable option for people who struggle with traditional diets.