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You are here: Home / About / News

Welsh wins 2022 Shaw Prize in Life Sciences and Medicine

June 6, 2022 By Curnick, Jacqueline A

University of Iowa professor and EHSRC Member Michael J. Welsh, MD, has won the 2022 Shaw Prize in Life Science and Medicine together with Paul A. Negulescu, senior vice president and site head for San Diego research with Vertex Pharmaceuticals Inc.

The prize was awarded for landmark discoveries of the molecular, biochemical, and functional defects underlying cystic fibrosis and the identification and development of medicines that reverse those defects and can treat most people affected by this disorder.

The Shaw Prize is considered one of the most internationally prestigious awards in science and its application, and it carries a shared monetary award of $1.2 million. It honors individuals who have made “discoveries in the biomedical sciences and innovations in clinical medicine that have led to significant victories in our longstanding war against illness and suffering.” Welsh and Negulescu will receive the prize in fall 2022.

Welsh is a professor in the UI Department of Internal Medicine and its pulmonary, critical care, and occupational medicine division. He also is a professor in the neurosurgery, neurology, and molecular physiology and biophysics departments. Welsh also serves as director of the Pappajohn Biomedical Institute at Iowa. He has been leading groups of scientists studying lung biology and cystic fibrosis (CF) for 40 years.

Brooks Jackson, MD, vice president for medical affairs and the Tyrone D. Artz Dean of the UI Roy J. and Lucille A. Carver College of Medicine, says Welsh’s steadfast pursuit of answers to the fundamental questions underlying cystic fibrosis disease has never wavered in that time.

“As a physician-scientist, Dr. Welsh has remained focused on how his work in the lab would improve the medical care he and colleagues could offer their patients,” Jackson says. “His commitment to discovery and innovation has dramatically changed the lives of people with CF.”

Working with colleagues from the University of California, San Francisco, in the mid-1980s, Welsh first demonstrated that CF disrupts chloride ion movement across the sheet of cells that line the lung’s airways. Chloride, a component of salt, is present in secreted body fluids such as sweat, saliva and mucus, which are vital for the proper function of organs. In the lungs of people with CF, these secretions become thick and elastic and, rather than acting to clear inhaled matter from the lungs, they clog the passageways. Affecting more than 80,000 people worldwide, CF was long considered a lethal disease in childhood. Today, Welsh can point to young people with CF who compete in varsity-level athletics. Life expectancy and health have increased dramatically thanks in part to discoveries made by Welsh and Negulescu.

After the identification of the cystic fibrosis transmembrane conductance regulator (CFTR) gene in 1989, Welsh and his team made key discoveries toward understanding the role the product of this gene—the CFTR protein—plays in allowing chloride to move in and out of cells. They showed how mutations in the gene and the CFTR protein cause cells to malfunction and fuel disease development. Importantly, they showed that defects in the mutated CFTR can be repaired in cells. These insights provided a roadmap for the subsequent quest toward targeted therapies to repair the function of the CFTR protein.

Building on these key discoveries, a team of scientists at Vertex, led by Negulescu, initiated research in 1998 into compounds that modulate the function of the CFTR protein. The research led to the development in 2012 of the first compound that corrects the underlying protein defect responsible for disease symptoms. The drug restored cells’ ability to transport chloride and ushered in a new era of CF treatment, sparking the development of combination-drug therapies.

“The combined contributions of Welsh and Negulescu represent the complete biomedical arc from basic discovery to application to the saving of lives,” said the Shaw Prize in Life Science and Medicine selection committee in announcing the shared award.

Welsh was quick to share the credit for this work.

“I am honored to receive this award, which would not have been possible without so many other people who contributed: terrific mentors, talented and creative students and trainees, my tireless and innovative assistants, my cherished colleagues,” he says. “The support and environment of the University of Iowa made this possible. The Cystic Fibrosis Foundation, National Institutes of Health, Howard Hughes Medical Institute, Carver Trust, and Pappajohn Biomedical Institute provided crucial support along the way. I am deeply grateful.”

The Shaw Prize consists of three annual awards: the Prize in Astronomy, the Prize in Life Science and Medicine, and the Prize in Mathematical Sciences. The award is managed and administered by The Shaw Prize Foundation, based in Hong Kong.

This article was first published by the University of Iowa College of Medicine

Filed Under: Research Awards

Thorne recipient of 2022 University of Iowa Distinguished Chair

May 26, 2022 By Curnick, Jacqueline A

Peter Thorne, professor of occupational and environmental health in the College of Public Health and deputy director of EHSRC, has been named a recipient of the 2022 University of Iowa Distinguished Chair.

The award is one of the highest bestowed on Iowa faculty. It recognizes tenured scholars of national and international distinction who are making a significant positive impact within the university, state of Iowa, and beyond through teaching, research, and/or scholarship.

“The University of Iowa Distinguished Chair rewards and recognizes some of the most exceptional members of our community of scholars, who have earned national and international distinction,” says Kevin Kregel, executive vice president and provost.

Thorne, who also serves as the director of the Human Toxicology Program within the Graduate College, joined the Iowa faculty in 1988. His pioneering research is focused on environmental risk factors for inflammatory lung diseases, the toxicity of engineered nanomaterials and persistent chemical pollutants, and the health effects of climate change.

Thorne is working with the U.S. Environmental Protection Agency (EPA) and the National Academy of Sciences in translating complex environmental health science to public policy. He is serving a third, three-year term on the EPA’s Science Advisory Board and served two years as chair. Thorne was a member of the National Academy of Sciences Board on Environmental Studies and Toxicology for six years. He is the current chair of the academy’s Committee on Toxicology.

At Iowa, Thorne directed the Environmental Health Sciences Research Center for 20 years and served as head of the Department of Occupational and Environmental Health for 12 years. He has led the Pulmonary Toxicology Facility core since 1993. Thorne was awarded the 2017 UI Scholar of the Year and the 2018 Iowa Board of Regents Award for Faculty Excellence. He teaches courses on health effects of climate change, global environmental health, and human toxicology. He has mentored 25 PhD students, 30 master’s students, and 18 postdoctoral fellows. With his students and staff, he has published more than 290 peer-reviewed publications.

 

This post first appeared on the College of Public Health website and was adapted from an Iowa Now story. 

Filed Under: News

David Cwiertny comments on presences of PFAS in Central City drinking water

April 5, 2022 By Riepe, Patrick J

Environmental Health Sciences Research Center Member David Cwiertny, a professor of civil and environmental engineering at the University of Iowa, commented recently on the elevates levels of PFAS in the drinking water of Central City, Iowa.

See the video from KCRG-TV

Filed Under: News

Keri Hornbuckle discusses airborne PCBs in Keystone Science Lecture

March 2, 2022 By Curnick, Jacqueline A

Approaches for studying airborne exposure to polychlorinated biphenyls (PCBs) — and helping communities reduce such exposure — were discussed by Iowa Superfund Research Program (ISRP) Director Keri Hornbuckle, Ph.D., during her Feb. 4 Keystone Science Lecture. The NIEHS-funded program is housed at the University of Iowa.

PCBs are a large group of chemicals that persist in the environment. They have been associated with conditions such as diabetes, liver toxicity, skin ailments, and immune, neurological, and respiratory issues. The substances can be found in products ranging from adhesives and paints to insulation and electrical equipment. Although the chemicals were banned in the U.S. in 1979, potentially harmful exposure to PCBs is an ongoing concern, according to Hornbuckle.

Potentially dangerous byproducts

A group of 209 PCB mixtures known as Aroclors were produced by the company Monsanto in the middle of the 20th century for use in electrical transformers, fluorescent light ballasts, hydraulic fluid additives, building materials, and flame retardants. Sale of Aroclors was banned by the U.S. Environmental Protection Agency in 1975. However, non-Aroclor PCBs continue to be manufactured, largely as byproducts of certain industrial processes, noted Hornbuckle.

She explained that exposures are ubiquitous in the U.S. because of how the substances vaporize into the air, especially on hot days. Although it has been assumed that exposure comes primarily through diet because of how PCBs bioaccumulate in fish and other animals, it is now known that inhalation is another important route of exposure. Hornbuckle, who leads the ISRP Analytical Core, discussed how research methods optimized for assessment of the chemicals have provided new insights about sources of airborne PCBs, exposures, and potential for remediation.

Quantifying exposure

Hornbuckle’s team developed a set of sampling and analytical methods to provide the highest quality PCB data. For example, they use an instrumental method for detection and quantification of the chemicals that uses triple quadrupole mass spectrometry. The approach allows scientists to measure PCBs with a level of accuracy and precision comparable to that provided by high-resolution mass spectrometry but at lower cost.

According to Hornbuckle, the method enables her team to better understand sources of airborne PCB exposure. She noted that the scientists study the release of the substances in cities, rural areas, and school classrooms.

Beginning in 2009, ISRP Project 4 began sampling for airborne PCBs in Chicago, and researchers discovered the prevalence of airborne non-Aroclor PCBs. The scientists determined that past systems for measuring the chemicals had been developed using Monsanto mixtures, which meant that modern PCBs produced as byproducts of manufacturing had gone unnoticed.

Interestingly, one driver of PCBs being emitted into the air involves the heat of the day, not proximity to manufacturing sites.

“The variability of PCBs across the city of Chicago is mostly driven by temperature,” Hornbuckle explained. “The hotter it is, the more they’re released into the air.”

Another surprising finding is that living in rural areas does not equate to lower levels of PCB exposure. In addition, some children experience the highest levels of PCBs in their classrooms.

Reducing health risks

“Many American schools were built in the middle part of the last century, and PCBs were widely added to building materials because they do make resilient materials that don’t need replacement — think lighting, window caulking, masonry joints, paint, and carpets,” Hornbuckle said.

Mitigating the risk of exposure in schools is challenging, she noted. There is no federal program to remove PCB contamination once it is discovered, and schools with resources to address the problem are likely in high-income areas. Because expensive remediation — removal of the substances — is often not feasible in low-income districts, more vulnerable populations can experience the most exposures.

Hornbuckle suggested that school districts can target the worst exposure areas by testing for PCBs on a room-by-room basis.

She said that the state of Vermont is undertaking such a campaign in its schools — combing for sources of PCB exposure, room by room. And a side benefit of many schools around the country updating their ventilation and air filtration systems to slow the spread of COVID-19 is that these measures lower exposure to PCBs as well.

“When you’re trying to determine toxicological risk and opportunities for remediation, some level of focus is needed,” Hornbuckle said. “It’s important to create a strategy for remediation that is cost-effective and that allows for [exposure] measurement when you’re done.”

During a lively Q&A discussion, NIEHS and National Toxicology Program Director Rick Woychik, Ph.D., noted that he grew up in northeastern Wisconsin on the Fox River, which became contaminated with PCBs.

“It is rather sobering to realize just how contaminated that area was,” he said, adding that in many places, PCBs are just one set of chemicals to which people are exposed.

“A major research challenge is to better understand how all of these exposures can influence health and disease,” noted Woychik.

Citations:
Jahnke JC, Martinez A, Hornbuckle KC. 2022. Distinguishing Aroclor and non-Aroclor sources to Chicago air. Sci Total Environ; doi:10.1016/j.scitotenv.2022.153263 [Online 20 January 2022].

Bannavti MK, Jahnke JC, Marek RF, Just CL, Hornbuckle KC. 2021. Room-to-room variability of airborne polychlorinated biphenyls in schools and the application of air sampling for targeted source evaluation. Environ Sci Technol 55(14):9460–9468.

By Kelley Christensen. Kelley Christensen is a contract writer and editor for the NIEHS Office of Communications and Public Liaison.

This article was originally published in Environmental Factor, published by the National Institute for Environmental Health Sciences.

Filed Under: News

Dr. Field recognized as National Radon Hero

February 18, 2022 By Curnick, Jacqueline A

The Conference of Radiation Control Program Directors (CRCPD) has selected Bill Field, University of Iowa professor emeritus of occupational and environmental health and member of the EHSRC, to receive the organization’s 2022 Radon Hero Award. The award recognizes an individual who has demonstrated leadership in reducing the health effects of radon exposure, the second leading cause of lung cancer in the United States. The award is based on the recipient’s contributions to this effort, the breadth and scope of their services, and sustained commitment to mitigating radon risk.  He was previously awarded Honorary Membership to CRCPD in 2010.

Official presentation of the CRCPD Radon Hero Award will occur during the organization’s annual radon meeting in October 2022.

Field is recognized as one of the foremost authorities on radon, not only for his research into the radioactive gas, but because of his advocacy and outreach efforts. He helped identify radon as the leading environmental cause of cancer deaths in the United States, and remains dedicated to educating the public about the health risks of radon and ways to reduce exposure in homes, schools and at work.

 

This post was originally posted on the UI College of Public Health website. 

Filed Under: News, Research Awards

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