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I am Intramural Blog

immunology

Data Mining for Dementia Clues

IRP Research Examines Under-Appreciated Factors in Alzheimer’s Disease

Thursday, June 1, 2023

brain with red area in the middle representing inflammation

This June, the observance of Alzheimer’s and Brain Awareness month reminds us just how devastating the impact of Alzheimer’s and other dementias is across the world. About 55 million people are currently living with Alzheimer’s disease or related dementias such as frontotemporal dementia and Lewy body dementia. This includes the estimated 6.7 million people in the U.S. over age 65 with Alzheimer’s disease, a population whose cognitive decline imposes huge financial costs on the American economy and often unrecognized burdens on the unpaid family members who provide care for those patients.

While the disease has been a target of intensive investigation ever since Alois Alzheimer first discovered clumps of amyloid beta protein and tangles of tau in the brain of a deceased patient in 1906, scientists have made only modest progress in treating it. Efforts to design drugs targeting the abnormal globs of amyloid and tau thought to cause Alzheimer’s have met with only limited success. That’s why IRP investigator Keenan Walker, Ph.D., is taking a different approach: exploring the link between dementia risk and the immune system.

Digging Up the Roots of Food Allergies

IRP Research Aims to Explain the Perils of Peanuts and Other Foods

Wednesday, May 17, 2023

foods that can trigger food allergies, including shellfish, peanuts, and eggs

If you are a parent of school-age children, you’ve probably received a list of prohibited lunch foods and bans on birthday cupcakes. Going out to eat or cooking for guests can present a similar minefield of ingredients that many people must avoid. If it seems like food allergies are on the rise, it’s not your imagination. The U.S. Centers for Disease Control and Prevention (CDC) reports that the prevalence of food allergies has increased by 50 percent since the 1990s, making it a serious public health concern.

This May, Food Allergy Awareness Week reminds parents, kids, teachers, food service workers — really all of us — that we must remain vigilant to the risks of reactions to certain foods. These allergies affect nearly 32 million Americans, including 1 in 13 kids. If you think about the average classroom, that could be two or three children with severe allergies in one room. For many, even a tiny amount of an allergen can trigger a serious, even life-threatening response by the body’s immune system. To address this growing concern, IRP senior investigator Pamela A. Guerrerio, M.D., Ph.D., and her colleagues in the Food Allergy Research Section at the National Institute of Allergy and Infectious Diseases (NIAID) are working to unravel how genetics, immune system development, and environmental factors interact to cause food allergies in children.

Mapping the Pathway to an Asthma Attack

IRP Research Breathes New Life into Therapies for Treatment-Resistant Asthma

Tuesday, May 2, 2023

black man using an inhaler

It may start with a wheeze, a cough, or a feeling of tightness in the chest, but the result is the same. Acute asthma attacks make sufferers feel like they’re breathing through a straw while underwater. And even between attacks, having asthma can sometimes feel like your lungs are bound in tight bandages that make it difficult to take a deep breath.

World Asthma Day, observed this year on May 2, raises awareness of asthma, a common inflammatory disease that causes difficulty breathing in more than 260 million people worldwide, including 25 million in the U.S., roughly 8 percent of the country’s population. While many people can control their symptoms by taking medications and limiting certain activities, the condition still causes significant illness and even death.

Dying Tumor Cells Suppress Anti-Cancer Immune Response

IRP Study Points to Strategies to Stop Disease From Spreading

Tuesday, April 4, 2023

T cells (red) attacking cancer cell (white)

Ancient Greek myth describes how the hero Hercules battled the many-headed hydra, which regrew two heads every time Hercules cut one off. This frustrating fight against a seemingly invulnerable opponent would be an apt metaphor for treating cancer, in which tumor cells sometimes die in a particular way that actually helps their brethren multiply and spread to other parts of the body. In a study of that phenomenon using a mouse model of breast cancer, IRP researchers discovered that it occurs because that form of cell death suppresses the immune system’s response to the cancer, a finding that points to several potential ways to improve cancer therapy.

Postdoc Profile: Eavesdropping On Bacterial Banter

Dr. Tiffany Zarrella Examines Communication Between Bacteria to Combat Persistent Infections

Wednesday, October 12, 2022

Dr. Tiffany Zarella

Facebook’s nearly 3 billion users may seem like a huge social network, but it pales in comparison to the conversations among the trillions of microbes that live inside a single human body. Few people know this better than IRP postdoctoral fellow Tiffany Zarrella, Ph.D., who spends her days eavesdropping on the messages bacteria send to one another to improve treatment for stubborn infections.

Dr. Zarrella was drawn to the bacterial world in microbiology lab courses while earning a biochemistry degree at Syracuse University in New York. After graduation, she obtained a research technician position at Albany Medical College, where she worked on projects centered around infectious bacteria and how they respond to their environments. She continued this thread of research in graduate school, moving on to a new study to discover how Streptococcus pneumoniae bacteria, which often cause ear infections and pneumonia, use a particular signaling molecule to resist antibiotic treatments and evade vaccines.

Leading the Charge Against Infectious Disease

Government Awards Recognize H. Clifford Lane’s Four Decades of Research Achievements

Wednesday, July 27, 2022

Dr. H. Clifford Lane

The remarkable career of H. Clifford Lane, M.D., might have gone very differently if a NIH scientist hadn’t accidentally eavesdropped on Dr. Lane’s conversation with a colleague in 1979. After hearing Dr. Lane mention that he had missed the deadline to apply for a position at NIH, the NIH researcher made some calls and discovered a spot there had just opened up — one that was perfect for Dr. Lane, who would spend the ensuing decades conducting life-saving research to understand and combat some of the world’s most dangerous infectious diseases.

Now the Clinical Director at the National Institute for Allergy and Infectious Disease (NIAID), Dr. Lane has been named a finalist for the 2022 Samuel J. Heyman Service to America Medals’ Career Achievement Award in recognition of his crucial contributions to the fight against HIV/AIDS, Ebola, COVID-19, and other illnesses. Also known as the “Sammies,” the awards recognize federal employees who are “breaking down barriers, overcoming huge challenges, and getting results.”

African Ancestry May Influence Immune Response to Prostate Cancer

IRP Study Could Help Explain Racial Disparities in Disease Outcomes

Tuesday, July 19, 2022

black man getting blood drawn by nurses

Even as advances in therapy are extending the lives of many cancer patients, there are still stark differences in how likely patients of different races and ethnicities are to die from the disease. A recent IRP study suggests that a weaker immune response against cancer could explain the worse clinical outcomes for Black men with prostate cancer, pointing to potential strategies that could help close this gap.

Postdoc Profile: From Bench to Bedside and Back Again

Dr. Stefan Barisic Turns Laboratory Discoveries into Kidney Cancer Treatments

Wednesday, June 22, 2022

Dr. Stefan Barisic

The Laboratory of Transplantation Immunotherapy sits at the heart of the NIH Clinical Center, just down the hallway from the Southeast inpatient unit. Here, IRP postdoctoral research fellow Stefan Barisic, M.D., labors at the bench with the goal of creating practical treatments for kidney cancer patients. Having such proximity to his patients was one of the chief attractions of working at NIH for Dr. Barisic.

“The NIH Clinical Center is an amazing place because it has all the resources you need to go from the bench to the bedside and back to the bench all in one building,” says Dr. Barisic.

NIH Mourns the Passing of Joost J. Oppenheim

Monday, May 16, 2022

Joost J. Oppenheim, M.D.

The IRP community is profoundly saddened by the recent passing of Joost “Joe” Oppenheim, M.D., Senior Investigator and Head of the Cellular Immunology Section in the Cancer Innovation Laboratory at NIH‘s National Cancer Institute (NCI). He died on May 14, 2022, at the age of 87.

Dr. Oppenheim was engaged in cellular immunology research at NIH for five decades and was instrumental in the discovery of cytokines, chemokines, and alarmins, which are substances produced by immune cells that enable them to communicate and act as ‘first responders” to injury or infection.

IRP’s Carolina Barillas-Mury Elected to National Academy of Medicine

NIH Researcher Recognized for Important Insights Into Malaria Transmission

Wednesday, January 5, 2022

Dr. Carolina Barillas-Mury

In many parts of the world, the high-pitched buzz of a mosquito is a harbinger of more than an annoying itch — it’s a warning of possible malaria infection. Malaria, a disease spread by mosquitos that causes high fever and flu-like illness, is a serious risk for nearly half of the world’s population. According to the World Health Organization, there were 241 million cases of malaria and 627,000 deaths in 2020 alone. More than 95 percent of them occurred in Africa.

Efforts to combat malaria using measures like preventative treatments and environmental mitigation have helped to reduce infections and deaths over the past decade, but those improvements have recently plateaued, according to IRP Distinguished Investigator Carolina Barillas-Mury, M.D., Ph.D., section chief in the Laboratory of Malaria and Vector Research in the National Institute of Allergy and Infectious Diseases (NIAID).

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