brain

An Unlikely Target in the Fight Against Alzheimer’s

IRP Researchers Find Link Between Dementia and Byproducts of Cholesterol Breakdown

old man in nursing home

When most people think about Alzheimer’s disease, the liver is probably the organ least likely to come to mind. Yet recent IRP research suggests that molecules called bile acids, which are synthesized in the liver, may influence the development of Alzheimer’s disease. In honor of Brain Awareness Week this week, we’re diving into that work to learn how such an unlikely target could help lead to new treatments for Alzheimer’s and other forms of dementia.

To date, efforts to develop therapies for Alzheimer’s disease, which affects more than 6 million Americans over the age of 65, have achieved little success. Many scientists are focused on proteins in the brain as potential treatment targets, including the ‘amyloid-beta’ protein now infamous amongst Alzheimer’s researchers. In contrast, IRP senior investigator Madhav Thambisetty, M.D., Ph.D., has been exploring the role that cholesterol might play in the development of Alzheimer’s and vascular dementia, which is marked by microscopic bleeding and blood vessel blockage and is the second most common form of dementia.

Graduate Student Symposium Spotlights Future Scientists

IRP’s Ph.D. and Medical Students Present Research at Virtual Event

Khiem Lam

The IRP isn’t concerned only with discovering the secrets of how our bodies work and developing new therapies to treat disease. Senior scientists and many other employees at NIH also are actively involved in training the next generation of researchers. One place where the benefits of those efforts is strikingly clear is at NIH’s annual Graduate Student Research Symposium, where graduate students performing research in NIH labs show of the fruits of their partnerships with IRP researchers.

On February 16 and 17, more than 100 of the IRP’s graduate students presented their work virtually at the 18th edition of the event. These young scientists discussed the results of studies on a huge range of topics, from how hunger changes during pregnancy to how viruses cause cancer. Read on to learn about a small sampling of the projects they’ve been hard at work on.

New Lasker Scholars Begin Breaking New Ground

Early-Career Scientists Power Through Pandemic to Launch Labs

NIH’s 2021 Lasker Clinical Research Scholars

NIH has long prided itself on its ability to accelerate the careers of the brightest young physicians and scientists in the country. One of these many efforts is the Lasker Clinical Research Scholars Program, which provides a select group of individuals relatively early in their scientific careers with the funding and institutional support to start their own labs at NIH. After five to seven years of independent research in the IRP, Lasker Scholars are given the option to apply for three years of funding for work outside of NIH or to remain as investigators at NIH.

While launching a lab in the midst of a global pandemic is no easy task, five Lasker Scholars have done just that over the past year. Their research on cancer, Parkinson’s disease, childhood blindness, and inflammatory conditions is now well underway and promises to eventually improve the lives of many patients. Keep reading to learn more about how NIH’s newest Lasker Scholars are changing the way we treat those illnesses.

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.

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.

Wearable Tech Tracks Ebbs and Flows of Bipolar Disorder

Research Suggests Sleep- and Activity-Based Approaches to Treatment

women wearing a fitness tracker

Mental Illness Awareness Week, observed this year from October 3 through 9, brings attention and support to the many patients and families who are coping with a variety of psychological conditions. Although an estimated 20 percent of U.S. adults and nearly 17 percent of youth have some type of mental health ailment, these conditions are still not well understood. However, research conducted at the National Institute of Mental Health (NIMH) is transforming our knowledge of one such mental health condition that affects more than two million Americans: bipolar disorder.

NIH Summer Interns Show Off in Poster Exhibitions

Budding Scientists Present Their Research During Three-Day Virtual Event

Deeya Garg

Although NIH’s 2021 Summer Internship Program (SIP) was fully virtual this year, that didn’t stop the hundreds of participating high school, college, and graduate students from contributing to a variety of important IRP research projects. More than 500 students who worked in NIH labs this summer presented their work during this year’s Summer Presentation Week, which took place August 3-5.

I sifted through the lengthy list of presenters at the event and spoke with a diverse group of young men and women who spent their summers expanding our knowledge of human health and biology. Read on to learn about these promising future scientists and doctors and the research they completed this summer.

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.

Global Scientists Come Together at the National Institutes of Health

Individuals From Around the World Drive IRP Breakthroughs

Dr. Flossie Wong-Staal

Come to NIH and you’ll hear many accents. Scientists from around the world have always contributed significantly to the NIH mission. The resulting diversity of backgrounds and perspectives makes the NIH Intramural Research Program an extremely stimulating and productive environment. Read on to learn about some of the many scientists of the past and present who brought their talents from abroad to one of the world’s leading institutions for biomedical research.

Rare Genetic Mutation Links Two Neurological Diseases

Globe-Spanning Collaboration Connected ‘Viking Gene’ to Dementia and ALS

A man with ALS uses a head-mounted laser pointer to communicate with his wife by pointing to letters and words on a communication board

June was an important month in the life of baseball great Lou Gehrig. It was the month he was born and the month he was first picked for the Yankees’ starting lineup. Sadly, it was also the month in 1939 when he was diagnosed with the neurological disease that bears his name — Lou Gehrig’s disease, also known as amyotrophic lateral sclerosis (ALS) — and the month he died of that disease two years later. It is appropriate then that ALS Awareness Day is observed on June 21 as a day of hope for those searching for effective treatments and, ultimately, a cure.

IRP senior investigator Bryan J. Traynor, M.D., Ph.D., a neurologist at the National Institute on Aging (NIA), is one of the people leading that search. Best known for his work unraveling the genetic causes of ALS and frontotemporal dementia (FTD), he led an international consortium of researchers that uncovered a mutation on chromosome 9 that is the most common ‘familial’ cause of both ALS and FTD. In fact, this mutation, which disrupts the function of the C90RF72 gene, is responsible for 40 percent of all familial cases of ALS and FTD in European and North American populations, meaning cases in which a family member also has the disease. The discovery, published in 2011, revolutionized the scientific understanding of neurodegenerative diseases and the relationships between them. It also suggested a potential target for future gene therapies.