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I am Intramural Blog

bacteria

Targeting Tuberculosis

IRP’s Clifton Barry Seeks Novel Therapies for an Ancient Foe

Monday, March 24, 2025

Mycobacterium tuberculosis bacteria

March 24 is World Tuberculosis Day, a day to remember that a preventable and curable disease still kills more than a million people each year. Despite every effort to eradicate it, the disease-causing bug, Mycobacterium tuberculosis, keeps coming back stronger and more ready for a fight. As varieties of the bacteria grow more and more resistant to treatment, an evolutionary war is raging between the bacterium and researchers like IRP senior investigator Clifton Barry, Ph.D., who has been seeking solutions for the past 33 years.

A Fight With The Flu Could Help Control COVID-19

IRP Mouse Study Reveals Factors That Influence Pandemic Virus’ Replication in the Lungs

Tuesday, March 4, 2025

a person's lungs surrounded by virus particles

Tuberculosis, the flu, a staph infection, asthma — you’d think all these ailments could only be bad news for the lungs. However, if they don’t get out of control, they might actually turn out to have an unexpected benefit. A new IRP mouse study suggests that a recent bout with these illnesses might prime the lungs to keep a lid on a COVID-19 infection.

One of the most perplexing aspects of the COVID-19 pandemic was the huge variation in individual experiences with the disease. Despite the incredibly infectious nature of the virus that causes it, SARS-CoV-2, many people never got sick at all, or at least never showed symptoms. For those who showed symptoms, they ranged wildly, mild for some and life-threatening for others.

Helping the Heart Stand Up to Sepsis

NIH Researcher Explores Why Some Survive Infection-Induced Organ Damage

Wednesday, February 19, 2025

human body with heart highlighted surrounded by bacteria

“When you have eliminated the impossible, whatever remains, however improbable, must be the truth.” That line from Arthur Conan Doyle’s Sherlock Holmes can be applied to mysteries of all sorts, including the ones scientists toil away in their labs to solve. When it comes to solving the many mysteries of sepsis — a life-threatening immune over-reaction to an uncontrolled infection — the process of elimination is leading us closer to answers, thanks to researchers at the NIH Clinical Center.

Sepsis — also known as septic shock in its most severe form — occurs when the body’s immune system kicks into overdrive to fight a severe infection. Unfortunately, rather than just attacking the harmful invaders, the immune system releases chemicals that, when present in excess, cause intense, tissue-damaging inflammation and impair organ function. In recognition of Sepsis Survivors Week, we spoke with IRP Senior Investigator Charles Natanson, M.D., about two of the great mysteries of sepsis: how does sepsis cause organ failure in the first place, and why do some people survive it while so many others die?

Rooting Out Genetic Risks for Gum Disease

IRP’s Oral Health Experts Explore Why It’s Not Always About Brushing and Flossing

Wednesday, October 30, 2024

illustration of inflammation in the gums

When you dig into that bowl of candy this Halloween, you may want to keep in mind that those sweets are not only fueling your sweet tooth, but also an army of creepy crawlies living in your mouth, busily forming a sticky film of plaque and attacking your gums.

As Dental Hygiene Month comes to a close this October, we spoke with IRP Clinical Research Specialist Laurie Brenchley, R.D.H., a dental hygienist and clinical study coordinator in the laboratory of IRP senior investigator Niki Moutsopoulos, D.D.S., Ph.D. Together, Brenchley and Dr. Moutsopoulos are studying the link between oral health and the immune system, with a specific focus on cases in which genetic factors increase susceptibility to severe gum disease, more formally known as periodontitis.

NIH Mourns the Passing of John Gallin

Thursday, October 17, 2024

Dr. John Gallin

NIH Director Monica M. Bertagnolli, M.D., offered the following tribute to Dr. John I. Gallin, M.D., upon hearing of his passing on Thursday, October 10, 2024.

It is with a heavy heart that I share that John I. Gallin, M.D., the 10th and longest-serving director of the NIH Clinical Center, died at his home today of multiple myeloma at the age of 81 with his wife Elaine Gallin, Ph.D., by his side.

John’s illustrious career at NIH spanned more than 50 years, but he will be most remembered for leading NIH’s research hospital for 23 years from 1994-2017. He often said that his time at the NIH Clinical Center, which he referred to as the “House of Hope,” was his most special because of the hospital’s partnership with patients to improve health through clinical research. He developed the hospital’s research portfolio, created the Patient Advisory Group, established the Department of Bioethics, and was instrumental in the creation of the Edmond J. Safra Family Lodge for adult patients and their families, a complement to The Children’s Inn. He also led efforts to build the addition to the hospital, the Mark O. Hatfield Clinical Research Center, which opened to patients in 2005. He started the Bench-to-Bedside Awards to integrate the work of basic and clinical investigators. His years of work led to the NIH Clinical Center receiving the 2011 Lasker-Bloomberg Public Service Award.

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.

Bone Marrow Cells Reveal Secret Weapon to Battle Bacteria

Research Could Lead to Cell-Based Therapies for Infections and Autoimmune Reactions

Tuesday, May 7, 2024

bacterial colonies growing in a petri dish

One thing many scientists love about their job is that the topic they study can still surprise them even after decades of research. IRP senior investigator Eva Mezey, M.D., Ph.D., for instance, has spent the last 20 years investigating a particular set of cells in the bone marrow, yet until now she had never uncovered one of their most intriguing tricks. In a recent study, her IRP team and its collaborators discovered that those cells make a substance that can fight infections and tame hyper-active immune responses.

Experimental Antibody Tightens Up Leaky Blood Vessels

Treatment Could Benefit Patients With a Variety of Illnesses

Tuesday, March 12, 2024

blood vessels

Our blood is a miraculous mix of cells and critical fluids that keep our organs running and fight off dangerous infections. Of course, for blood to do its job, it has to stay in our veins and arteries, which is easier said than done for people with certain illnesses. Fortunately, a recent IRP study has demonstrated the promise of a potential new treatment for people with dangerously leaky blood vessels.

Several life-threatening conditions, including Ebola and sepsis due to an uncontrolled infection, cause the fluid component of blood to leak out of blood vessels. IRP senior investigator Kirk Druey, M.D., however, came to study the phenomenon through a very rare ailment called Clarkson disease, which causes patients to periodically experience ‘flares’ or ‘episodes’ when their veins and arteries suddenly and inexplicably start leaking.

Seeking Antibiotic Alternatives to Annihilate Infections

IRP’s Darryl Zeldin Investigates New Ways to Combat Bacterial Pneumonia

Tuesday, November 21, 2023

a pile of pills

Our immune system is supposed to block infections like pneumonia, and in most instances, it does. Even so, nearly 1 million Americans each year become sick enough from pneumonia to require a visit to the hospital, and for about 50,000, the lung infection is deadly.

Multiple types of infectious organisms can cause pneumonia, and doctors use antibiotics to treat cases caused by bacteria. Unfortunately, bacteria are resilient organisms that have waged an evolutionary battle against our antibiotics ever since penicillin was first discovered, leading to alarming rates of antibiotic-resistant infections. It’s no wonder, then, that the public health community calls attention to this life-threatening conundrum each November during Antibiotic Awareness Week.

Postbac Poster Day Returns to NIH Campus

Budding Scientists Assemble for First Time Since 2019

Monday, May 22, 2023

IRP postbac fellow Vernon Kennedy with his poster at Postbac Poster Day

In many ways, working at NIH feels like being at a world-renowned university, complete with a variety of classes, intellectually stimulating lectures, social events, and opportunities for professional development. It’s no wonder, then, that NIH has long been a destination for young people who have just departed from their alma maters with their newly earned undergraduate degrees.

These new graduates come to the IRP to hone their scientific skills in NIH’s Postbac IRTA program, conducting research in IRP labs for one or two years under the expert guidance of the IRP’s seasoned investigators. The program also provides the opportunity once per year for participants to present the fruits of their efforts to all their IRP colleagues at Postbac Poster Day, and this year’s event on April 19 and 20 was the first to include an in-person component since 2019. Read on to learn about a few of the nearly 1,000 postbacs who showed off their research at this year’s event, which spanned fields from neuroscience and cancer to genetics and virtual reality.

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