#rodent-models

#rodent-models

These findings reposition the thymus as a central regulator of immune‑ mediated aging and disease susceptibility in adulthood.

Social foraging strategies illustrate the balance between competition and cooperation, where individuals either produce resources or exploit the efforts of others, navigating ecological and social constraints.

The researchers at Eon Systems have taken several pre-existing components: a fruit fly brain scan, a tool for modelling neurons, a model of some of the fly's muscles and body, and a very simple virtual environment, connected them together and ran it. The team claims that the result displays some of the behavior of the real insect.

When mitochondria are exposed to tissue or blood, they lose the electrical gradient across their outer membrane. Mitochondria that lack such a gradient are recognized by a cell's internal machinery as damaged and quickly destroyed. The vast majority of previous studies involved injecting 'naked' mitochondria directly into the bloodstream or tissue sites, but the approach isn't very efficient, so researchers often have to use 'ridiculous' doses of mitochondria.

Young, two-month-old lab mice housed with older, 18-month-old mice showed really impaired cognition. Researchers exposed young mice raised in a sterile, microbe-free environment to gut bacteria from old mice, causing the younger animals to perform worse on cognitive tests, as if they had prematurely aged, just like the cohoused mice.

Anyone living with schizophrenia understands the true limitations of current treatment options. Antipsychotics remain the single leading treatment for the disorder, and they are riddled with undesirable side effects. Weight gain, tardive dyskinesia, and excessive drowsiness are a few. Much research is devoted to expanding the range of medication options, and few academics have pursued other avenues. However, there is a possibility that treatment for schizophrenia can be approached through cellular methods if long-term research validates early signs of hope.

Our results are highly promising, especially since currently there are no approved treatments that address the underlying cause of Dravet syndrome. Since this gene regulation product targets the actual root cause of Dravet syndrome, we observed improvements in other developmental and cognitive symptoms, in addition to seizure control. This is unprecedented.

Scientists in the laboratory of Rendong Yang, PhD, associate professor of Urology, have developed a new large language model that can interpret transcriptomic data in cancer cell lines more accurately than conventional approaches, as detailed in a recent study published in Nature Communications. Long-read RNA sequencing technologies have transformed transcriptomics research by detecting complex RNA splicing and gene fusion events that have often been missed by conventional short-read RNA-sequencing methods.

Fecal transplants from old female mice appear to boost fertility and ovarian health in younger ones. The findings, detailed in a study published Tuesday in the journal Nature Aging, indicate a direct link between gut health and reproductive health in the animals. They could also hold implications for future research into how the microbiome influences ovarian function and fertility in humans.

A groundbreaking study found that adults who sit for 10 or more hours daily face a significantly higher risk of dementia compared to those who sit less. The research, which tracked over 50,000 adults using wearable devices, revealed that the risk increases dramatically after crossing that 10-hour threshold.

Last November, the UK government announced a bold plan to phase out animal testing in some areas of research. Animal tests for skin irritation are scheduled for elimination this year, and some studies on dogs should be slashed by 2030. The long-term vision is 'a world where the use of animals in science is eliminated in all but exceptional circumstances'.

Most people will forget a name, misplace their phone, or lose track of a conversation at some point. Usually, those moments pass without much thought. But for many adults, especially as they age, small lapses can trigger a much deeper fear: Is this the beginning of cognitive decline? As a neurologist, I hear this concern often. And as a researcher, I have learned something important: Worry about cognition and cognitive disease are not the same thing.

Mini 3D 'organoids' are slowly phasing out animal testing in some areas of research. These laboratory-grown tissue structures can model human biology more accurately than traditional animal models, reducing the need for animal experimentation while providing more relevant data for drug development and disease research.

I expect Punch will be under careful observation by the keepers, and it sounds like they are trying various approaches to find a way to keep Punch in the group, which is best practice. If it looks like he is at risk of physical harm he would be removed from the group. As macaques are highly social intelligent primates this would be the last resort, only if he were deemed to be at risk of physical harm.

Before treatment began, participants underwent neuroimaging. Instead of relying on a single modality, the researchers fused structural connectivity (how regions are physically wired) with functional connectivity (how regions co-activate at rest). The goal was not to throw every possible feature at a black box, but to learn a constrained pattern-what the authors call structure-function "covariation"-that carries the most predictive signal for outcome. In other words, the model tries to find the smallest set of connections that meaningfully forecasts symptom change.

At the Winter Olympics, skiers, bobsledders, speedskaters, and many other athletes all have to master one critical moment: when to start. That split second is paramount during competition because when everyone is strong and skilled, a moment of hesitation can separate gold from silver. A competitor who hesitates too much will be left behind -but moving too early will get them disqualified.

Countless millions of nonhuman animals (animals) of all sorts are used in a diverse array of laboratory research. Their treatment varies from being unspeakably inhumanely abused to being treated with kindness, depending on the questions at hand and the values and attitudes of the researchers themselves. The lives of these animals truly are hidden, and most people are incredulous when they learn that laboratory rats and mice still are not considered "animals" under the current federal Animal Welfare Act.

New therapies for Alzheimer's disease should target a particular gene linked to the condition, according to researchers who said most cases would never arise if its harmful effects were neutralised. The call to action follows the arrival of the first wave of drugs that aim to treat Alzheimer's patients by removing toxic proteins from the brain. While the drugs slow the disease down, the benefits are minor,

The team, which is being led by Jülich neurophysics professor Markus Diesmann, will leverage the Joint Undertaking Pioneer for Innovative and Transformative Exascale Research (JUPITER) supercomputer for their simulation. JUPITER is currently the fourth most powerful supercomputer in the world according to the TOP500 list, and features thousands of graphical processing units. The team demonstrated last month that a " spiking neural network " could be scaled up and run on JUPITER, effectively matching the cerebral cortex's 20 billion neurons and 100 trillion connections.

Many researchers are surprised and relieved over an unusual step taken by the US National Institutes of Health (NIH): the agency is rolling back the red tape on a host of basic-science experiments that involved human participants and had been classified as clinical trials. The decision, which was announced on 29 January and is part of a broader NIH effort to reduce administrative burden, should free such research from the heavy bureaucratic requirements that are designed for clinical trials but are sometimes ill-suited to other fields, such as basic psychology and behavioural studies.

Mucopolysaccharidosis type II (MPS II), or Hunter syndrome, is a rare genetic disorder primarily affecting boys, caused by a deficiency in the enzyme needed to break down sugar molecules. This harmful buildup in cells and tissues impacts multiple body systems, causing frequent infections, organ enlargement and developmental disabilities. Management involves supportive care and enzyme replacement therapy, as there is currently no cure,