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Spinal cord injury patients are scrambling for access to the injection, but researchers say preliminary evidence is weak

Parkinson's disease (PD) is a debilitating neurodegenerative condition that results in a loss of mobility and muscle control. A neuropathological hallmark of PD is the presence of aberrant inclusions, known as Lewy pathology, of which α-synuclein (α-Syn) is a major component. The accumulation of α-Syn may be due to an imbalance in the proteostasis system regulating α-Syn. To investigate this hypothesis, we delineated the proteostasis network (PN) of α-Syn in the human substantia nigra at the...

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Glutathione (GSH) is an abundant antioxidant that protects against endogenous and exogenous toxic agents. The evidence over the relationship between GSH and cognitive integrity during aging is still scarce. In this study we investigated the relationship between GSH and cognitive integrity, cognitive effort and sustained cognitive effort. Second, we explored whether GSH modulation is related to other physiological properties such as blood oxygenation (BOLD response) and to brain excitability...

Aging is linked to a higher incidence of gut diseases such as inflammatory bowel disease (IBD), yet the underlying mechanisms remain unclear. We identified an age-related decline in magnesium (Mg) levels specifically in the gut across species, prompting investigation of its role in intestinal health. Functional studies demonstrated that Mg restriction accelerates gut aging in old but not in young mice and aggravates colitis severity. Multi-omics analysis of mouse tissues revealed that dietary Mg...

Cognitive decline during aging may be influenced by peripheral factors, including neuroproteins and pro-inflammatory cytokine levels, body composition, and physical fitness. However, the specific associations between these factors and cognitive performance remain underexplored. A comprehensive assessment, including peripheral cytokine and neuroprotein levels, body composition, physical performance (aerobic fitness and muscle strength), and cognitive function was performed in a cohort of 87 older...

In the absence of telomerase, telomere shortening triggers replicative senescence, a tumor suppressor mechanism that is also associated with oncogenic genomic instability. Yet, the precise mechanism that connects these seemingly opposing forces remains poorly understood. To directly study the complex interplay between senescence, telomere dynamics, and genomic instability, we develop a system in Saccharomyces cerevisiae to generate and track telomeres of precise length in the absence of...

Analysis of Wuhan market map suggests China has not disclosed some of the earliest infections in animals and people

Neolithic seafarers who settled Palau were already a blend of Asian and Papuan peoples

Experiments show the crop can survive in lunar soil—with a lot of help