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I am Intramural Blog

stress

Overturning the Orthodoxy About the Brain’s Stress Chemical

IRP Researchers Discover Unexpected Stress-Blunting Effects of Some Neurons

Wednesday, April 27, 2022

man showing signs of stress

The past few years have not been easy for anyone. With world events like the COVID-19 pandemic and the war in Ukraine causing everyone to worry, it’s no surprise that during this April’s annual Stress Awareness Month observance, so many people experienced high levels of stress and anxiety. While stress management techniques and talk therapy may help some people, nearly 10 million Americans need prescription anti-anxiety drugs to quell those feelings.

One important target for anti-anxiety medications is norepinephrine, a chemical released by certain neurons in the brain. Norepinephrine — also known as noradrenaline — has traditionally been considered to be a ‘stress chemical’ that triggers anxiety. However, drugs designed to target the neurons that produce it don’t always work as predicted. That’s why IRP senior investigator Patricia Jensen, Ph.D., and her colleagues in the Developmental Neurobiology Group at the National Institute of Environmental Health Sciences (NIEHS) are delving deep into the mouse brain to better understand these neurons and what exactly they do.

Mouse Study Links Anxiety to Neuronal Power Failure

Chronic Stress Diminishes Energy Production in the Brain

Tuesday, December 7, 2021

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.

Reducing Stress Boosts Efficiency of Bacterial Factories

Unconventional Genetic Strategy Could Enhance Production of Medical Treatments

Tuesday, March 23, 2021

E. coli bacteria

We all have bad days on the job — your colleague keeps bugging you, your boss yelled at you for an innocent mistake, and you skipped lunch because you have 10 different deadlines coming up. Understandably, many people find it much harder to get their work done under such stressful circumstances. Microbes that produce chemicals for medicine and scientific research experience similar struggles, but a recent IRP study has found that short-circuiting their stress response makes them far more efficient at that task.

Brief Mindfulness Program Reduces Healthcare Workers’ Stress

IRP Study Examines Less Time-Intensive Method for Improving Mental Health

Tuesday, January 5, 2021

people meditating

While working in healthcare can be extremely rewarding, it is also undoubtedly stressful. In particular, the COVID-19 pandemic has had severe repercussions on the mental health of medical professionals, as doctors and nurses struggle to care for unprecedented numbers of sick patients. Fortunately, new NIH research suggests that a relatively brief workplace mindfulness program can reduce stress and anxiety in healthcare workers.

The Social Side of Health

Understanding Social and Behavioral Research in the IRP

Tuesday, December 3, 2019

social and behavioral science diagram

The NIH IRP is world-renowned for its high-risk, high-reward biomedical research. While the NIH may be best known for its clinical and biomedical research on topics from cancer to allergies to addiction, IRP investigators have also produced a rich body of work conducted in the area of social and behavioral research (SBR). In this post, I will describe how SBR furthers the NIH’s goals of improving human health with some examples of the excellent work done by SBR investigators in the IRP.

Stress-Relieving Chemical Could Combat Alcohol Use Disorder

Targeting Brain’s Stress Circuitry Curbs Rats’ Alcohol Consumption

Tuesday, August 6, 2019

chemical structure of the oxytocin molecule

For social drinkers, alcohol brings to mind barbecues and bar-hopping with friends, but for the roughly 16 million Americans with alcohol use disorder (AUD), drinking is a source of significant stress. Unfortunately, those negative emotions — particularly those experienced during withdrawal — drive people with AUD to drink even more. A recent IRP study points to a potential way to curb the desire to drink in people who abuse alcohol by altering the behavior of a brain structure that governs negative emotions.

Medallions and Medicine

Wednesday, July 5, 2017

Mantova front

Medallions and coins are both beautiful artwork and symbols of what achievements and people we value. These are some of the beautiful medallions and coins in the NIH History Office collection—and the stories that go with them.

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