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The Aging Microenvironment Shapes Angiogenic Remodeling in IBD-Associated Colorectal Carcinogenesis
Chronic intestinal inflammation establishes a pro-senescent microenvironment that fuels the stepwise evolution from inflammatory bowel disease (IBD) to colorectal cancer. Although cellular senescence initially functions as a tumor-suppressive barrier, the persistent accumulation of senescent cells can promote disease progression through the senescence-associated secretory phenotype (SASP). Key SASP mediators, including VEGF, IL-8/CXCL8, and matrix metalloproteinases (MMPs), reprogram endothelial...
Intracerebroventricular infusion of exercise donor plasma exosomes induces molecular changes indicating exercise-like adaptations in basal ganglia cells of older male rats
Chronic moderate aerobic exercise promotes health in older adults and provides neuroprotection to patients with neurodegenerative diseases, most notably Parkinson's disease (PD). Exosomes are small extracellular vesicles that facilitate interorgan communication. During exercise, they are selectively packaged with bioactive molecules termed "exerkines" and released into the blood. Exosomes protect their exerkine cargo, including DNA, RNA, and proteins, and facilitate their interorgan transit....
Gerobiotics and neuroprotection: effects on the gut-brain axis in age-related neurodegenerative diseases
As the global population ages, effective strategies to attenuate or prevent neurodegenerative processes are becoming increasingly important. Gerobiotics, an emerging class of probiotic strains and their derived postbiotics, are considered promising geroprotective agents because of their potential to target fundamental mechanisms of aging, modulate the gut-brain axis, and attenuate age-related cognitive and functional decline. This review aims to synthesize existing evidence from preclinical and...
SVIP in plasma: a candidate blood-based biomarker for early detection of amnestic mild cognitive impairment
CONCLUSION: Plasma SVIP demonstrates significantly higher diagnostic accuracy than VCP for the detection of aMCI, suggesting its potential as a candidate blood-based biomarker pending large-scale pathophysiological validation.
Nuclear Enlargement as a Histological Hallmark of Skeletal Muscle Aging, Revealed by Deep Learning-Driven Analysis and Validated in Inflammatory Myopathies
Aging reshapes the architecture of human skeletal muscle, yet objective tissue-level markers that capture this process remain limited. We combined large-scale histology with deep learning to identify reproducible features of muscle aging and to test their biological relevance. We analyzed 974 hematoxylin-eosin whole-slide images from a population resource using a dual-attention convolutional neural network and an independent Mask R-CNN model to quantify nuclear size and density, verified by...
Unlocking the aging brain: mTORC1 as a convergent integrator for neurodegeneration and therapeutic intervention
Aging is the primary risk factor for neurodegenerative diseases, characterized by a progressive decline in cellular homeostasis. Central to this process is the mammalian target of rapamycin complex 1 (mTORC1), a convergent integrator regulator of metabolism that integrates nutrient sensing with cellular growth. While essential for development, chronic mTORC1 hyperactivity, termed mTORopathy, emerges during aging, driving a deleterious cycle of mitochondrial dysfunction, neuroinflammation, and...
New GLP-1 diabetes pill delivers major weight loss and blood sugar control
A new oral GLP-1 medication helped people with type 2 diabetes dramatically improve blood sugar control and lose weight in a major clinical trial. The results suggest that highly effective diabetes treatments may soon become available in a much more convenient pill form.
Scientists turned red lettuce green and something surprising happened
Researchers used genome editing to block the production of red pigments in lettuce, causing other beneficial plant compounds to build up instead. The lettuce continued to grow normally, pointing toward a new way to create crops with customized nutritional profiles.
Copper drug clears toxic Alzheimer’s proteins and restores memory
A copper-based compound restored the brain’s ability to clear toxic Alzheimer’s proteins, dramatically reducing amyloid buildup and improving memory in laboratory experiments. The findings point to a potentially fast-tracked new treatment strategy because the drug has already been tested in humans for other neurological conditions.
Daily briefing: Iron-Age human bones were made into tools before interment
‘Every box has been opened’: London botanic gardens digitizes 7 million specimens
In the field — and in the lab — sometimes the simplest tool is best
At-home brain implant gives man with motor neuron disease his daily life back
Why people should work together to shape the economy
The latest benefit of obesity drugs: boosting testosterone and sperm quality
Nanocrystal-tailored recombination for all-perovskite tandem solar modules
A need for pragmatism in preclinical aging and longevity research
How AI is revealing the secret lives of animals from hummingbirds to pumas
Bones of Iron Age skeleton were whittled into tools
AI models have a troubling knack for discovering legal loopholes
AIs on their own found ways to exploit regulations and evade current safeguards