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Lab-grown organoids reproduce some of a kidney’s internal structure and function

Even in athletes without chronic traumatic encephalopathy, brain tissue showed neuron loss and other changes, though their significance isn’t clear

Deep mutational scanning (DMS) assays provide a powerful method to generate large-scale datasets essential for advancing AI-driven predictions in biology. The tripartite β-lactamase assay (TPBLA), in which a protein of interest is inserted between two domains of β-lactamase, has previously been reported as capable of detecting and quantitating the aggregation of proteins and biologics in the oxidizing periplasm of Escherichia coli and used as a platform for identifying small molecule inhibitors...

GLP-1-based therapy is highly effective in combating aging-associated metabolic diseases. However, the metabolic effects of frequent withdrawal from this therapy in aged, obese mice have not been previously studied. In this study, aged obese UM-HET3 mice were assigned to three groups: Group 1 received no liraglutide treatment (Lira OFF); Group 2 underwent 3 cycles of treatment followed by withdrawal (Lira ON/OFF); and Group 3 remained on continuous treatment (Lira ON). As expected, mice in Group...

Considerable amounts of branched chain fatty acids (BCFAs) are present in the human diet from beef and dairy products. BCFAs can also be produced by the human gut microbiota and synthesized from branched chain amino acids. However, the physiological impact of a BCFA-rich diet on lipid metabolism and organismal health is unclear. In this study, by screening a collection of dietary bacteria, we find that the BCFA-rich Microbacterium diet causes the formation of supersized LDs and delays...

The blood-brain barrier (BBB) is critical for maintaining cerebral homeostasis, and its deterioration with age is an important pathogenic factor in the etiology of vascular dementia. Extracellular matrix-integrin interactions play a central role in regulating vascular stability. The αvβ3 integrin is not expressed by brain endothelial cells under stable conditions but is strongly induced by hypoxia. However, it is currently unclear whether αvβ3 integrin exerts a destructive or protective...

Thrombopoietin (TPO), predominantly produced by the liver, is the key regulator for platelet production and the hematopoietic stem cell niche. Our earlier report demonstrated that platelet GPIbα is required for hepatocellular TPO generation, which is the major resource of TPO in the blood circulation. However, how hepatocytes physically contact circulating sinusoidal platelets across the liver endothelium for this process is unknown. Kupffer cells reside in contact with both sinusoidal blood and...

Alzheimer's disease (AD) is one of the most prevalent neurodegenerative disorders, characterized by a progressive decline in cognitive function. Increasing evidence indicates that alpha-ketoglutarate (AKG), a key metabolite in the tricarboxylic acid (TCA) cycle, can extend lifespan and healthspan across various animal models, raising interest in its potential neuroprotective effects in age-related disorders such as AD. Our previous research found that dietary supplementation with calcium...

Neuropathological changes that precede or accompany early cognitive decline in Alzheimer's disease (AD) may also impact pain processing; however, the molecular connection between these domains remains unclear. In this study, we investigated whether a shared causal factor underlies both increased pain susceptibility and AD progression. Analysis of two ethnically distinct cohorts revealed a significant association between pain susceptibility and cognitive decline from cognitively normal (CN)...

Lactate, historically considered a metabolic byproduct, has emerged as a key regulator of muscle physiology and metabolism. This study explores its potential as an exercise mimetic to counteract disuse muscle atrophy (DMA) in aging skeletal muscle using a hindlimb suspension model in senescence-accelerated prone 8 (SAMP8) mice. The mice were divided into four groups: Control, lactate-treated control, hindlimb suspension, and hindlimb suspension with lactate intervention. Lactate administration...

Background: Aging leads to physiological and psychological changes that compromise both mental and physical autonomy, as well as cognitive functions, thereby increasing the risk of anxiety and depression. The sedentary lifestyle typical of older individuals results in a deterioration of the overall quality of life and well-being. Objective: This study aims to evaluate the effectiveness of Hatha yoga in improving cognitive health among older adults. We will specifically examine the impact of this...

Alzheimer's disease (AD) is one of the most prevalent neurodegenerative disorders, characterized by a progressive decline in cognitive function. Increasing evidence indicates that alpha-ketoglutarate (AKG), a key metabolite in the tricarboxylic acid (TCA) cycle, can extend lifespan and healthspan across various animal models, raising interest in its potential neuroprotective effects in age-related disorders such as AD. Our previous research found that dietary supplementation with calcium...