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I am Intramural Blog

liver

Simple Blood Test May Thwart a Complicated Cancer

Signs of Past Viral Exposure Predict Liver Cancer Risk

Monday, October 24, 2022

vials containing blood samples

The liver has a difficult but important job. It serves as the central processing plant for all the food, drinks, and drugs we take in, separating and breaking them down into usable nutrients and toxic wastes that need to be removed from the body. It’s no surprise, then, that diseases affecting the liver can have life-threatening consequences. In particular, infections like hepatitis B and C and liver damage caused by alcohol, drugs, or fatty liver disease can all lead to liver cancer. Unfortunately, even though the presence of these conditions are harbingers of possible liver cancer, the disease often passes unnoticed until it is at an advanced, less treatable stage.

IRP senior investigator Xin Wei Wang, Ph.D., and his NIH research team are developing ways to detect liver cancers much earlier, when existing treatments are much more likely to stop their growth. In honor of Liver Cancer Awareness Month this October, I talked to Dr. Wang about his research and the novel blood test his lab has developed to predict liver cancer risk.

Three-Minute Talks Showcase Smooth-Talking Scientists

IRP Researchers Engage and Educate at Competition Finals

Wednesday, July 13, 2022

Three-Minute Talks poster

English is generally considered the ‘international language of science,’ since nearly all scientific papers are published in English. Yet, even to a native English speaker, scientists seem to be using another language entirely to talk about their research. Most Americans, after all, don’t know an ‘autophagosome’ from a ‘lysosome’ and would be hard-pressed to explain the difference between an ‘oocyst’ and a ’sporozoite.’

Fortunately, efforts like NIH’s annual Three-Minute Talks (TmT) competition are helping scientists learn how to communicate about their research in a manner that is much easier to understand. On June 30, after months spent whittling down dozens of competitors from across the IRP, 10 finalists raced against the clock to explain their work and its importance in a clear and compelling way.

Award Honors Promising Female Scientists

Women Scientists Advisors Select Three Young Researchers for Recognition

Thursday, May 19, 2022

Dr. Sally Chang

While women have now overtaken men in terms of admission and enrollment in undergraduate education, they remain underrepresented in the sciences. This includes at NIH, where 74 percent of senior investigators and 54 percent of tenure-track investigators are male, according to the most recent statistics available. Consequently, NIH is putting considerable effort into supporting women scientists at all stages of their careers.

One NIH entity dedicated to this important work is the NIH Women Scientists Advisors (WSA), a group of women elected to represent the interests of women scientists in the IRP. Among its many initiatives, each year the WSA chooses several female postdoctoral fellows or graduate students in the IRP to receive the WSA Scholar Award in recognition of their outstanding scientific achievements. The awardees present their research at the annual WSA Scholars Symposium, which this year was held on April 25 and recognized young women leading efforts to better understand how disease-related genes evolved, an investigation of how a fatty liver can give rise to liver cancer, and the evaluation of a way to deliver gene therapy for a rare genetic disease. Read on to learn more about this year’s WSA Scholars and the impressive discoveries they have made during their time in the IRP.

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.

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.

Ketogenic Diet May Soothe Alcohol Withdrawal

Human and Animal Studies Point to New Treatment Strategy

Tuesday, June 8, 2021

steak and vegetables meal

Interest in the low-carb ‘ketogenetic’ diet has exploded in recent years, with legions of enthusiasts jumping on the bandwagon. The popular dietary regimen has even caught the attention of scientists seeking new treatments for an array of health conditions. For instance, a recent IRP study suggests that a ketogenic diet might make it easier for people with alcohol use disorder to stop drinking.

Medical Research Scholars Reflect on Their NIH Journeys

Future Physician-Scientists Spent a Year in IRP Labs

Monday, September 21, 2020

MRSP participant working in the lab

Many doctors not only treat patients directly, but also make valuable contributions to research that will improve medical care in the future. Each one of these talented ‘physician-scientists’ began his or her research career under the guidance of a more senior scientist. At the NIH, the Medical Research Scholars Program (MRSP) provides just such an experience to promising young medical students from all across the United States.

Research Symposium Celebrates Graduate Student Science

Event Spotlights Students Completing Their Ph.D. Research in IRP Labs

Tuesday, February 25, 2020

NIH graduate student John Fenimore

The NIH provides an extraordinarily rich environment for learning and honing the skills needed to pursue a scientific career. It’s no wonder, then, that Ph.D. students from institutions all across the United States and the rest of the world come here to conduct their dissertation research under the mentorship of the IRP’s many renowned investigators.

Nearly 150 of those students presented the fruits of their scientific work at the NIH’s 16th annual Graduate Student Research Symposium on Thursday, February 20. The insights they have produced on topics from cancer to autoimmune disease to environmental contaminants were supremely impressive and will likely contribute to important improvements in medical care in the future. For anyone who missed this exciting event, read on to learn about a few of the many research projects that were on display.

Antibiotics Could Assist Liver Cancer Care

Four Questions with Dr. Tim Greten

Tuesday, November 19, 2019

medications

There are over 100 different types of cancer, with liver, breast, and colon cancers among the most common. At the NIH, researchers across the organization have long been committed to furthering cancer research in an effort to increase the number of cancer survivors. They consistently push the boundaries of this field each day in the hopes that their work could lead to better diagnoses, better treatment, and better outcomes for cancer patients.

A 2018 study by IRP senior investigator Tim Greten, M.D., and his IRP colleagues did just that and more. Their research pushed the norms of cancer research by studying how a treatment as simple as antibiotics affects cancerous liver tumors. By utilizing antibiotics to wipe out the collection of microorganisms living in the digestive tracts of mice — known as the gut microbiome — the team identified a link between the gut microbiome and the behavior of the liver’s immune cells, which play a role in defending the organ against cancer. The IRP team ultimately showed that antibiotic treatment reduced the development of liver tumors in these ‘germ-free’ mice, and it also reduced the likelihood that tumors in other areas of the body would metastasize — or spread — to the animals’ livers, a finding that could one day prove beneficial to future cancer patients.

Ebola Virus: Lessons from a Unique Survivor

Wednesday, May 31, 2017

Reblogged from The NIH Director's Blog.

Ebola virus (green) is shown on cell surface

There are new reports of an outbreak of Ebola virus disease in the Democratic Republic of Congo. This news comes just two years after international control efforts eventually contained an Ebola outbreak in West Africa, though before control was achieved, more than 11,000 people died—the largest known Ebola outbreak in human history. Many questions remain about why some people die from Ebola and others survive. Now, some answers are beginning to emerge thanks to a new detailed analysis of the immune responses of a unique Ebola survivor, a 34-year-old American health-care worker who was critically ill and cared for at the NIH Special Clinical Studies Unit in 2015.

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