I am Intramural Blog

IRP Interns Shine at Summer Poster Day

NIH summer intern Ishu Sivakumar at Summer Poster Day

Upon entering the sunny foyer of the NIH’s Natcher Conference Center last Thursday, I was immediately struck by a burst of loud, excited chatter. As it always is on NIH’s annual Summer Poster Day, the building was filled with hundreds of high school and college students and the scientists, families, and friends who had turned out to see what these young men and women had spent the summer doing.

Molecular Factors Underlie Mouth’s Head Start on Healing

magnified image of skin epithelial cells

As an impatient eater, I find myself burning or biting the inside of my mouth more often than I’d like. Fortunately, these injuries tend to heal within a day or two, whereas wounds like nicking my finger with a knife or scraping my knee seem to take a week or longer to disappear. My personal impressions have now been confirmed by a new NIH study that uncovered major differences in the way the mouth and skin repair themselves, pointing to potential therapeutic targets that could speed healing.

Doctor Data: How Computers Are Invading the Clinic

human silhouette surrounding a computer network

For most of their history, computers have been limited to mindlessly executing the instructions their programmers give them. However, recent advances have given rise to the intertwined fields of artificial intelligence (AI) and machine learning, which focus on the creation of computer programs that can operate independently and even teach themselves to perform specific, specialized tasks. In 2013, the online PubMed database listed only 200 research publications related to ‘deep learning,’ a new type of machine learning that has shown success for particularly difficult tasks like object and speech recognition. Just four years later, in 2017, that number exceeded 1,100.

Neuronal Building Block Underlies Alcohol Addiction

3D structure of the NMDA receptor

While many people can easily stop after a beer or two, for others one drink begets many more, ultimately leading to an addiction that drives continuously increasing alcohol consumption over time. New IRP research has identified a specific type of neuronal receptor involved in the development of alcohol dependence in mice, suggesting a possible approach to curbing problematic drinking behaviors in humans addicted to alcohol.

The Nerve to Study CNS Regeneration at the IRP

I knew very little about neuroscience before beginning my graduate studies, but the topic of neurodegeneration looked very interesting. Having applied to several labs, I landed a Ph.D. student position in a neuroscience lab at the Saha Institute of Nuclear Physics, a government research institute in India, that would propel me on my way to the NIH IRP. In the first year of my Ph.D. program, I learned several things about the central nervous system (CNS), but what intrigued me the most was its lack of ability to regenerate after injury.

retinal ganglion cell axons after optic nerve crush injury

Exhausting Tumor Cells Makes Them More Vulnerable to Immunotherapy

an immune cell (red) attacking a cancer cell (white)

The constant combat between cancer and the body’s defenses can wear a tumor out. Unfortunately, cancer cells can pause their life cycle to repair themselves before re-entering the fray with renewed vigor. According to new IRP research, preventing cancer from taking a time-out can make it more susceptible to attack by the immune system.

Remembering Dr. Alan Rabson, a Leader in Cancer Care

Dr. Alan Rabson with journalist and author Katie Couric

The NIH community and cancer scientists around the world were saddened to learn that Alan Rabson, M.D., a prominent former IRP researcher and Deputy Director of the NIH’s National Cancer Institute (NCI), passed away on July 4 at the age of 92.

Dr. Rabson first joined the NIH in 1955 as a pathologic anatomy resident in the NIH Clinical Center, which had opened just two years before, and he began studying cancer-causing viruses in an NCI intramural laboratory a year later. Over the course of his ensuing six decades with NIH, Dr. Rabson accumulated a great many stories, a few of which we have shared in his own words, pulled from a 1997 “NCI Oral History Project” interview.

Perceived Pain Drives Body’s Automatic Nervous System Response

red-hot stove burner

Everyone has a different pain threshold; a plate that’s too hot for one person to touch might be easily handled by someone else, for example. Now, IRP researchers have found the first evidence that a person’s sensation of a painful temperature more strongly influences the body’s automatic response to it than does the actual temperature.

Molecular Marker May Curb Obesity-Related Inflammation

doctor measuring an overweight patient's waist circumference

Hundreds of scientific studies have established that obesity often leads to severe health problems and cuts short many lives. Nevertheless, a significant number of obese people remain healthy despite their excess weight. A new IRP study has now identified a possible molecular marker that distinguishes obese but healthy individuals from those whose weight has negatively affected their health.

Microbes Within Us: A Chat With Science Writer Ed Yong

human silhouettes surrounding microbes

Research into the collection of microorganisms that live in and on our bodies — known as the microbiome — has dramatically expanded in recent years. In fact, the field is one of 12 domains designated as top long-term IRP research priorities. Since the establishment of the NIH’s Human Microbiome Project in 2007, investment in microbiome research across the IRP has increased over forty-fold and now occurs in dozens of labs across more than 20 institutes and centers.

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