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I am Intramural Blog

I am Intramural Blog

Metabolic Inflexibility Drives Increased Appetite

IRP Research Could Aid Personalized Weight Loss Recommendations

Tuesday, July 9, 2024

person eating an over-sized burger

We all know the stereotype of the picky child who shuns vegetables unless they’re smothered in ranch dressing or cheese. Surprisingly, the human body can also be similarly choosy about how it fuels itself. New IRP research shows that people whose bodies prefer to raid their sugar depots rather than use stored fat during a period without food consume more calories after their fast, suggesting a possible explanation for why some people are more prone to gaining weight over time or have less success with certain weight loss interventions.

IRP’s Marston Linehan Receives HHS Secretary’s Award for Distinguished Service

Honor Recognizes Groundbreaking Advances in Cancer Genetics

Monday, July 1, 2024

Dr. Marston Linehan

As an undergraduate majoring in English, IRP senior investigator W. Marston Linehan, M.D., was fascinated by the complex poetry of 18th-century writer William Blake. But as much as he loved puzzling out the deeper meanings behind literary metaphors and imagery, Dr. Linehan eventually realized he wanted to do work that had more tangible benefits for people. Biology, with its own deep and complex mysteries, fit the bill.

Nearly 40 years later, Dr. Linehan’s pioneering work in the study of genetic forms of kidney cancer has transformed how doctors treat the disease. Over that period, he and his colleagues discovered or co-discovered nine distinct forms of kidney cancer and identified 10 different genes that cause them. These discoveries have provided the basis for targeted therapies and new approaches to treatment and, this year, earned Dr. Linehan the HHS Secretary’s Award for Distinguished Service, the highest honor given by the US government’s Department of Health and Human Services (HHS).

NIH Book Talk Highlights IRP Cancer Research

"A Fatal Inheritance" Author Larry Ingrassia Discusses His New Book

Monday, June 24, 2024

Lawrence Ingrassia at the NIH event

In June 2024, Mr. Lawrence Ingrassia visited NIH to give a talk about his book, A Fatal Inheritance: How a Family Misfortune Revealed a Medical Mystery, which evolved from interviews with current and former IRP researchers, including IRP scientist emeritus Joseph F. Fraumeni, Jr., M.D.

Li-Fraumeni Syndrome (LFS) is an inherited disorder caused by deleterious variants in the TP53 tumor-suppressor gene that lead to very elevated risk of cancers, including sarcomas, brain, breast, and many others. Investigators at NIH have followed families with LFS since the syndrome was first described in 1969 by Dr. Fraumeni and his late collaborator, Dr. Frederick P. Li. Drs. Li and Fraumeni’s seminal discovery was the foundation on which studies of genetic susceptibility to cancer were built.

Med Students Dip Their Toes Into IRP Research

Dozens of Doctors-To-Be Spent a Year Working in IRP Labs

Thursday, June 20, 2024

NIH MRSP participants (clock-wise from top-right): Maame Amoako, Megan Jiao, Brady Greene, and Abhinav Suri

American medical and dental schools do an excellent job of producing caring and knowledgeable medical professionals, but they don’t always provide opportunities for their students to get a taste of life in the lab. For a few dozen of those students each year, NIH’s Medical Research Scholars Program (MRSP) fills in that gap, welcoming a cadre of future physicians to NIH for a year of research in IRP labs. 

Over the past year, 52 medical students have been getting their feet wet in biomedical research under the guidance of experienced IRP scientists. Whether investigating new ways to detect diabetes or trying to improve ADHD treatment, the 2023-2024 class of MRSP participants received a world-class crash course in how to make new discoveries that will improve patients’ lives. Read on to get your own crash course on some of the exciting research they have been conducting over the past year.

Jekyll-and-Hyde Gene Has Dual Influences on Dementia Risk

IRP’s Priyanka Narayan Explores How the ApoE Gene Affects Fat Management in the Brain

Thursday, June 13, 2024

two DNA molecules overlaid on top of a brain

Just as Dr. Jekyll and Mr. Hyde exhibited the extremes of good and bad qualities in a single man, IRP Stadtman Investigator Priyanka Narayan, Ph.D., is showing how a single gene can both protect against and raise the risk for Alzheimer’s disease and other dementias. As we observe Alzheimer’s and Brain Awareness month this June, we talked with Dr. Narayan about her work.

“Our research focuses on understanding fundamental cell biology in brain cells and how genetic factors affecting that biology can predispose individuals to Alzheimer's disease,” Dr. Narayan says. “More recently, we’ve become interested in protective factors that make people more resistant to getting Alzheimer’s disease and other forms of neurodegenerative diseases as well.”

A Promising Path to Saving Stiffening Livers

IRP Study Could Lead to New Treatments for an Increasingly Prevalent Liver Ailment

Tuesday, June 11, 2024

fatty liver

Experienced bakers know certain ingredients are impossible to work with when they’re not supple enough — just try making cookies with ice-cold butter or rock-hard brown sugar. The same could be said of the liver, which struggles to do its job when high levels of fat accumulate in it and trigger a process that binds the liver up in an inflexible mesh. Recent IRP research has identified a key set of biochemical events responsible for that ailment, pointing the way towards a possible method of treating an increasingly prevalent cause of liver disease.

NIH Remembers Research Pioneer Gary Felsenfeld

Friday, June 7, 2024

Dr. Gary Felsenfeld

“To focus on an experiment and to shut out everything else is one of the great pleasures,” said NIH distinguished investigator Dr. Gary Felsenfeld in his 2020 oral history. 

During his more than 60 years at the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), Felsenfeld’s keen focus and enthusiasm for science never flagged. His long career was marked by monumental, lasting breakthroughs that transformed the field of molecular biology, particularly in relation to chromatin — the complex mixture of DNA and proteins that form chromosomes inside the nucleus of a cell.

Felsenfeld died on May 1 at age 94.

Say Hi to AI

NIH AI Symposium Highlights Potential of New Computational Tools

Wednesday, June 5, 2024

human head made out of computer circuits

The human brain is often compared to a computer. Although scientists and philosophers have long debated the appropriateness of that analogy, there’s no doubt that if our brains are computers, evolution takes its sweet time between software updates. Compare that to the rapid advancement of modern computers and it’s clear why many researchers are turning to software to assist the biological computer nature placed in their own heads.

On May 17, NIH celebrated this remarkable partnership between humans and machines with its first-ever Artificial Intelligence Symposium, a day-long event that brought together researchers from all around the IRP to share the ways their work is taking advantage of artificial intelligence (AI) and machine learning, which aims to create computers that can learn the way we do. Anyone in attendance surely came away in awe of the possibilities for how such technologies could accelerate our investigation into the mysteries of biology and the development of new medical treatments. For those who missed it, read on for a rundown of a few of the many research projects IRP researchers presented at the event.

Picturing Stroke Recovery

IRP’s Larry Latour Peeks Into the Damaged Brain

Tuesday, May 28, 2024

x-ray view of the brain as a person experiences a stroke

The word ‘stroke,’ attributed to the idea of ‘a stroke of God’s hand,’ was first used in 1599 to describe the sudden seizure, paralysis, and brain damage that was previously called ‘apoplexy.’ It was a fitting analogy. Strokes, which affect nearly 800,000 Americans every year, hit suddenly and terrifyingly, with devastating consequences. Speed is critical to good treatment outcomes, but until recently very little could be done. 

May is Stroke Awareness Month, a time to draw attention to the risks and symptoms of stroke and the new treatments that are helping people recover with fewer lasting effects. We recently spoke with IRP senior scientist Lawrence L. Latour, Ph.D., an expert on brain imaging who leads the Acute Cerebrovascular Diagnostics Unit, a unique partnership between the NIH Intramural Research Program and two hospitals in the metro, D.C., area: Suburban Hospital and Medstar Washington Hospital Center. The collaboration, launched in 2000, aimed to incorporate magnetic resonance imaging (MRI) in examinations of patients experiencing symptoms of stroke. This allowed the clinicians to diagnose patients more easily and then, through imaging at later time points, look at how patients responded to their treatments in order to learn ways to improve therapy.

Postbac Poster Day Presents a Buffet of Biology

Young Scientists Demonstrate Fruits of Their IRP Research

Monday, May 20, 2024

IRP postbaccalaureate fellow Monica Mesecar with her poster at Postbac Poster Day

There’s nothing quite like visiting NIH’s Postbac Poster Day to boost your faith that the future of biomedical science is bright. On May 1 and 2, more than a thousand recent college graduates participating in NIH’s Postbac program showed their colleagues, friends, and family the fascinating projects they’re working on in IRP labs. From delving into the aging brain to making sense of the bacteria on our skin, these aspiring researchers demonstrated that they have the passion needed to unravel the most complex mysteries of human biology. Read on to learn about the scientific questions just a few of them have been doggedly investigating over the past year.

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This page was last updated on Friday, January 14, 2022

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