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I am Intramural Blog

accomplishments

Treating Parkinson’s Disease with Pinpoint Precision

Drug Candidate Could Slow Progression and Reduce Side Effects

Wednesday, June 15, 2022

dartboard with dart in the bullseye

If you know someone with Parkinson’s disease, you’re probably familiar with the progressive tremors and movement difficulties it causes. Unfortunately, the most common treatment for the disease — a drug called levodopa, or L-DOPA for short — can make some movement problems worse when taken for long periods of time. That’s why IRP senior investigator David R. Sibley, Ph.D., and postdoctoral fellow Amy Moritz, Ph.D., have taken on the challenge of discovering new drugs that could be given to patients in conjunction with existing treatments to more effectively slow the disease’s progression while reducing side effects.

Researchers Delve Into New Moms’ Depression

Researchers Delve Into New Moms’ Depression

Tuesday, May 10, 2022

black and white photo of a mother holding her baby

Fresh off celebrating Mother’s Day this past Sunday, as well as Women’s Health Week this week, it’s important to acknowledge that being a new mom isn’t easy. As joyful and exciting as a new baby might be, it can be exhausting and worrisome, too. Many new moms experience some level of baby blues, but for some women, those blues can take a downward turn into symptoms of more serious depression.

Approximately one out of every eight women in the U.S. experiences symptoms of postpartum depression, according to the U.S. Centers for Disease Control and Prevention. What’s more, a recent study led by IRP staff scientist Diane Putnick, Ph.D., has shown that the course of postpartum depression can differ significantly among women. The study of nearly 5,000 women not only showed that 25 percent of them experienced symptoms of postpartum depression, but it also found that depression symptoms followed several different patterns and could persist for at least three years after giving birth. Understanding these different patterns of symptoms and some of the risk factors associated with them may help physicians recognize and monitor mothers who are at higher risk for persistent depression.

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.

Restoring the Flow of Precious Saliva

IRP Researchers Aim to Regenerate Damaged Salivary Glands

Friday, March 18, 2022

open mouth showing tongue

It’s easy to take our saliva for granted. Most people have so much of it that they think nothing of spitting it out into a trash can when they finish chewing a stick of gum. Perhaps only people who have lived without it truly understand the great gift that is a perpetually moist mouth.

“Persistent dry mouth causes lots of problems with quality of life, and people forget how important saliva is until they lose it,” says IRP senior investigator Matthew Hoffman, B.D.S., Ph.D.

In honor of World Oral Health Day on March 20, a celebration of scientific efforts to reduce the burden of oral disease, I talked with Dr. Hoffman about his lab’s efforts to understand the biology of salivary gland dysfunction and translate that knowledge into treatments that bring relief to the many people suffering from it.

An Unlikely Target in the Fight Against Alzheimer’s

IRP Researchers Find Link Between Dementia and Byproducts of Cholesterol Breakdown

Monday, March 14, 2022

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.

Mislabeled Proteins Linked to Birth Defects

IRP Researchers Discover Genetic Disorder Affecting the Brain and Skull

Thursday, March 3, 2022

baby

A baby is born with a birth defect every four and a half minutes in the United States, adding up to one in every 33 babies born each year in this country. While some birth defects can be corrected or treated, many result in life-altering disabilities, and sometimes the child doesn’t survive. In fact, birth defects account for about 20 percent of infant deaths in the U.S. World Birth Defects Day, celebrated on March 3 each year, honors the people and organizations who are working to understand, prevent, and treat birth defects.

One of these organizations is the Undiagnosed Diseases Program (UDP) at NIH, which connects experts across the IRP’s 23 Institutes and Centers in a joint effort to find explanations for the “most puzzling medical cases" referred to the NIH Clinical Center.

Wearable Tech Tracks Ebbs and Flows of Bipolar Disorder

Research Suggests Sleep- and Activity-Based Approaches to Treatment

Tuesday, October 5, 2021

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.

Old Drugs Find New Potential Against Hepatitis C

IRP Research Highlights a Novel Target to Stop Viral Infections

Wednesday, July 28, 2021

drug-screening robot

On July 28, health providers, researchers, patients, advocates, and governments across the globe observe World Hepatitis Day. Like this year’s theme, ‘Hepatitis Can’t Wait,’ IRP researchers are wasting no time utilizing the unique resources at the National Institutes of Health to identify innovative ways to combat the virus.

IRP Distinguished Investigator T. Jake Liang, M.D., for example, has focused his life’s work on understanding how hepatitis viruses infect, replicate, and persist in cells. The viruses he studies, hepatitis B and C, together affect more than 10 percent of the worlds’ population and are the most common causes of chronic liver disease and liver cancer. The two viruses were originally discovered in the 1980s by another IRP scientist, Harvey J. Alter, M.D., who shared the Nobel Prize in Medicine for that work in 2020. Nearly three decades later, Dr. Liang’s lab at the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) worked with scientists at the National Center for Advancing Translational Sciences (NCATS) to develop a novel test to screen thousands of molecules using a technology called high-throughput screening, which led to the discovery of several compounds with the potential to block hepatitis C infection.

Rare Genetic Mutation Links Two Neurological Diseases

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

Monday, June 21, 2021

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.

A Ray of Hope for a Rare and Deadly Skin Cancer

IRP Research Leads to First FDA-Approved Therapy for Merkel Cell Carcinoma

Tuesday, May 4, 2021

Dr. James Gulley talking with a patient

May is Skin Cancer Awareness Month. Skin cancers are the most common cancer in the U.S., affecting as many as five million people every year. Yet the rarest of these cancers is also one of the deadliest. Merkel cell carcinoma affects about 3,000 Americans each year, and until recently a lack of effective treatments meant only half of patients survived five years or longer after diagnosis. The median survival was nine months.

This bleak outlook changed radically in 2017 with the US Food and Drug Administration (FDA) approval of a new immunotherapy drug called avelumab. Developed through a collaboration between IRP researchers and the pharmaceutical company EMD Serono, Inc., and marketed as Bavencio, avelumab was the first treatment approved specifically for Merkel cell carcinoma.

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