Test Tube Tuesday

Mouse Study Links Anxiety to Neuronal Power Failure

Chronic Stress Diminishes Energy Production in the Brain

unplugged power cord

When power lines come down and the electricity shuts off, it’s understandably a worrying situation. As it turns out, people may become anxious not just when their homes are cut off from energy, but also when their brains find themselves short on power, according to recent IRP research done in mice.

While the misfortune of a blackout is temporary, many people experience chronic stress that bothers them continuously. In some individuals, repetitive stressors can contribute to the development of debilitating anxiety that interferes with everyday life. Intriguingly, past research has found evidence that problems with the biological batteries that power our cells, called mitochondria, might be involved in anxiety disorders, as well as some other psychiatric illnesses.

Inflammation Contributes to Cancer-Related Fatigue

Mouse Study Suggests Approach to Combat Patients’ Debilitating Tiredness

exhausted person in bed

The human body is like any delicate ecosystem — disrupting just one part of it can have unexpected, widespread repercussions. Cancer patients know this well, not just because a tumor confined to one organ can cause a range of symptoms, but also because radiation treatment aimed specifically at the tumor sometimes leaves patients feeling utterly exhausted. New IRP research suggests that an inflammatory response to targeted radiation therapy is responsible for this common side effect of the treatment.

To Boost Learning, Timing May Be Everything

New Strategy Could Enhance Benefits of Therapeutic Brain Stimulation

person holding a stopwatch

Electricity can do crazy things to the brain. While it can’t bring back the dead à la Frankenstein or give you new memories like in Total Recall, many scientists believe electrical stimulation could one day help patients with movement or memory problems regain those capabilities. New IRP research bolsters this idea by showing that a brain stimulation technology called transcranial magnetic stimulation (TMS) significantly boosts motor skill learning when precisely administered during specific periods of brain activity.

Study Explores Sex Differences in Flu

Differences in Flu-Fighting Antibodies Could Explain Women’s Greater Susceptibility

sick woman and man

It is well-known that COVID-19 infections are more often life-threatening in the elderly and individuals with chronic medical conditions like obesity, but the novel coronavirus isn’t the only infectious disease that more severely affects certain groups of people. A new IRP study explored a possible biological reason why women tend to experience worse flu infections and suggests a way to potentially improve the effectiveness of flu vaccines for everyone.

Older Cells Make for Riskier Transplants

Examining Molecular Markers of Aging Could Improve Patient Outcomes

old clock

In 2003, 92-year-old Fauja Singh ran the Toronto Waterfront Marathon in slightly under six hours, a feat that many people decades younger could not accomplish. Such examples reveal the problems with making assumptions about a person’s health based solely on age. Similarly, new IRP research suggests that assessing cellular characteristics associated with aging, rather than a person’s chronologic age in years, could improve outcomes for the more than 20,000 patients who receive bone marrow or blood stem cell transplants each year.

Tiny Molecules Have Big Potential for Treating Eye Diseases

Approach Could Protect or Even Regenerate Neurons in Eye and Spinal Cord

eye

At the end of Aesop’s fable The Lion and the Mouse, the titular rodent saves his much larger friend from a hunter’s trap. Just like Aesop, scientists know well that even something tiny and often overlooked can lend a helping hand. Extremely short strands of genetic material called microRNAs, for instance, could make for useful therapeutic targets for glaucoma and other degenerative eye ailments, according to new IRP research.

Explosive Blasts Wreak Havoc in Inner Ear

New Study Hones in on Causes of Hearing and Balance Problems

explosion

The US military presence in Afghanistan is coming to an end, yet the soldiers involved in the conflict will continue to experience its repercussions well into the future. Among other health effects, encountering the explosive devices widely deployed in the conflict can cause long-lasting hearing and balance difficulties. A recent collaboration between IRP researchers and scientists at the Walter Reed Army Institute of Research has produced important insights into the biological basis of those disabilities, which could eventually lead to better methods of preventing and treating them.

Experimental Compound Supercharges Cellular Power Plants

Treatment Approach Could Combat Obesity and Its Consequences

light bulb

When your phone or laptop is low on power, you simply connect it to a charger and find the nearest electrical outlet, but the process of restoring lagging energy production in our cells is not nearly as simple. However, a new IRP study has identified a promising approach for doing just that, which could lead to new treatments for obesity and related metabolic ailments like heart disease and diabetes.

Dog Genome Yields Clues to Human Cancer

IRP Research Identifies Genetic Risk Factors for Highly Lethal Disease

flat-coated retriever

We may share our food and even our beds with them, but despite what many dog lovers might like to believe, our canine companions are not humans who just happen to walk on four legs. One thing we do have in common, though, is the array of genetic diseases that afflict both man and man’s best friend. As a result, scientists can learn a great deal about human illnesses by studying dogs. Using this approach, IRP researchers recently discovered genetic variants that likely play an important role in a rare and poorly understood form of cancer.

Ketogenic Diet May Soothe Alcohol Withdrawal

Human and Animal Studies Point to New Treatment Strategy

steak and vegetables meal

Interest in the low-carb ‘ketogenetic’ diet has exploded in recent years, with legions of enthusiasts jumping on the bandwagon. The popular dietary regimen has even caught the attention of scientists seeking new treatments for an array of health conditions. For instance, a recent IRP study suggests that a ketogenic diet might make it easier for people with alcohol use disorder to stop drinking.