A study in mice concluded that memory problems associated with age may be driven by our gut microbiome and that the vagus nerve may be key to reversing it.
Category: biotech/medical – Page 7
Pathway-Specific Ultrastructure of Thalamocortical Synapses in Mouse Somatosensory Area S2
JNeurosci: Martin-Correa et al. combined high-end volumetric electron microscopy and axon labeling methods to measure the synapses established in adult mouse somatosensory area 2 by specific thalamic cell populations.
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The synaptic circuits established by thalamocortical axons from the ventral posteromedial (VPM) and posterior (Po) nuclei in the first somatosensory cortex have been mapped in high detail as they are a prime model in functional and modeling studies of the interactions between the thalamus and cerebral cortex. In addition, VPM and Po neurons innervate the second somatosensory area (S2), but the synaptic organization of their axons in this area remained essentially unknown. On adult male mice, we combined axon labeling with serial section transmission electron microscopy and focused ion beam-scanning electron microscopy to measure and compare functionally relevant structural parameters of synaptic boutons (SBs), e.g., bouton and mitochondrial volume, vesicle pool size, as well as postsynaptic density (PSD) distribution and size.
Faster cancer screening? New AI system offers a better way to detect abnormal cells
One way cancer specialists detect the disease is by examining cells and bodily fluids under a microscope, a time-consuming and labor-intensive process called cytology. It involves visually inspecting tens of thousands to one million cells per slide for subtle 3D morphological changes that might signal the onset of cancer. But AI offers an approach that is potentially faster and more accurate.
In a new study published in the journal Nature, researchers demonstrate an AI-powered 3D scanning system that can automatically sort through samples and identify abnormal cells with performance approaching that of human experts.
Building digital models The team developed a system called Whole-Slide Edge Tomography, which uses a scanner to capture a series of images at different depths to create a 3D digital model of every cell on a slide.
New research identifies fatty acids that selectively induce death in senescent cells, opening new avenues for age-related therapies
A research team from the University of Minnesota has discovered that certain polyunsaturated lipids (fatty acids) can selectively eliminate senescent cells — aged, dysfunctional cells that accumulate in the body over time and contribute to chronic disease and aging. The mechanism involves triggering ferroptosis, a regulated form of cell death, which senescent cells are particularly vulnerable to due to their elevated iron levels and heightened oxidative stress. This marks the first demonstration that fatty acids can act as senolytics (agents that clear senescent cells). While clinical application remains premature — further testing on animal models of age-related diseases is still needed — the findings open a promising new avenue for developing senolytic therapies targeting aging and its associated conditions.
MINNEAPOLIS/ST. PAUL (03/12/2026) —New research from the University of Minnesota Medical School has identified fatty acids that selectively induce death in senescent cells — the culprits behind aging and many chronic diseases, opening new avenues for age-related therapies. The findings were recently published in Cell Press Blue.
The research team discovered certain naturally occurring polyunsaturated lipids can selectively remove senescent cells. Senescent cells are old, damaged cells that accumulate with age and contribute to aging and many age-related diseases like pulmonary fibrosis, osteoarthritis and loss of resilience to infections.
These lipids cause senescent cells to die through a process called ferroptosis, which is a regulated form of cell death that occurs when iron in the cell triggers damaging reactions in its fats. The study also showed that these aging cells have high levels of iron and oxidative stress, which makes them uniquely susceptible to this process. Since lowering the number of senescent cells is associated with better health in old age, these natural, active fats could be used as a treatment for age-related illnesses caused by cellular senescence.
Targeted Multidomain Treatment for Mild Traumatic Brain Injury: A Randomized Clinical Trial
RCT: Among adults with mTBI, targeted multidomain interventions and usual care behavioral management resulted in similar improvements in overall symptom severity and patient-perceived recovery over 4 weeks.
Question Is a targeted multidomain (T-MD) intervention more effective than a standardized behavioral management intervention in adults with mild traumatic brain injury (mTBI)?
Findings In this randomized clinical trial of 162 patients, both the T-MD and behavioral management groups experienced similar improvements in mTBI symptom severity and perceived improvement in primary outcomes over 4 weeks.
Meaning The findings suggest that both T-MD and behavioral management are effective for improving global mTBI symptoms.
The transcriptional regulator BRD4 is an emerging target for cancer and other diseases in adults and children; however, its role in development is not well understood
David B. Frank & team now report BRD4 regulates gene expression and cell differentiation of lung endodermal progenitors into epithelial cells of the lung airways:
The figure shows mutant lungs exhibit fewer and dilated airways with diminished SOX2 expression in distal airways in addition to the formation of cystic distal airway structures.
1Department of Pediatrics, Division of Cardiology, Perelman School of Medicine, University of Pennsylvania, and.
2CHOP Cardiovascular Institute, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania, USA.
3Penn Cardiovascular Institute.
4Penn-CHOP Lung Biology Institute, and.
CRISPR the emergence of TIGR systems Rewriting DNA
Delve into the groundbreaking world of CRISPR gene editing – a technology rapidly reshaping medicine and offering unprecedented hope for treating previously incurable diseases. This video explores the remarkable journey from basic scientific curiosity about bacterial defense mechanisms to the first-ever personalized gene therapies being administered in Germany and beyond.
Discover how scientists uncovered CRISPR, an ancient bacterial immune system that functions as a precise molecular “cut-and-paste” tool for DNA. Learn about the astonishing speed at which this discovery transitioned from laboratory research to clinical applications, culminating in FDA approval of treatments for sickle cell disease and beta thalassemia – conditions once considered devastatingly difficult to manage.
We’ll examine the details of these revolutionary therapies, including how they work to correct genetic defects and provide lasting relief for patients. Beyond current successes, explore the exciting potential of CRISPR to address a wide range of inherited disorders, from hereditary angioedema to various cancers.
The video highlights the extraordinary case of KJ, an infant who received a custom-designed CRISPR base editing therapy to treat a rare metabolic disorder – demonstrating the feasibility of truly personalized medicine tailored to individual genetic profiles. Understand how this breakthrough compresses years of research into mere months, paving the way for treating countless other rare diseases.
Finally, look ahead to the future with the emergence of TIGR systems, an even more advanced class of gene-editing tools discovered in viruses that infect bacteria. These next-generation technologies promise enhanced precision, broader targeting capabilities, and potentially safer therapeutic applications. Join us as we unpack this complex science and reveal how fundamental research continues to unlock the secrets of life and offer hope for a healthier future.
#genetherapy.
Decoding tumor heterogeneity: A spatially informed pan-cancer analysis of the tumor microenvironment
Lodi et al. create a pan-cancer single-cell atlas characterizing immune cell heterogeneity within the tumor microenvironment (TME). They identify 70 shared cell subtypes, some of which are spatially co-localized to form two distinct immune reactive TME hubs. Both hubs associate with improved checkpoint immunotherapy outcome across different cancer types.
‘Tour de force’ mouse study shows a gut microbe can promote memory loss
Scientists have plenty of ideas about why aging impairs memory. Reductions in blood flow in the brain, shrinking brain volume, and malfunctioning neural repair systems have all been blamed. Now, new research in mice points to another possible culprit: microbes in the gut.
In a new study, scientists show how a bacterium that is particularly common in older animals can drive memory loss. This microbe makes compounds that impair signaling along neurons connecting the gut with the brain, dampening activity in brain regions associated with learning and memory, the team found.
Research suggests the microbiome may contribute to cognitive decline—but its relevance in humans is unclear.