Adverse Reactions – Détails, épisodes et analyse

As the foremost experts on the effects of chemicals, biological substances, and more, toxicologists are key contributors to health regulation and laws. Law Professor and lawyer Claudia Polsky, University of California Berkeley, discusses how science can influence environmental health law, as well as environmental justice, with co-hosts Anne Chappelle and David Faulkner and reveals legal gaps in protecting public health.

About the Guest
Claudia Polsky, JD, MAS, is a Clinical Professor of Law and the founding Director of the Environmental Law Clinic.

Before launching the Clinic, Ms. Polsky spent 18 years as a public sector and public interest environmental litigator: 14 as a Deputy Attorney General in the Environment Section of the California Department of Justice and four at Earthjustice and Public Citizen Litigation Group. She has litigated cases in trial and appellate courts, including the US Supreme Court; testified before Congress and the California legislature; and drafted and successfully defended environmental regulations.

Ms. Polsky also served as Deputy Director for Pollution Prevention and Green Technology at California’s Department of Toxic Substances Control. There, she managed a program that addressed an area of ongoing professional focus: reducing exposure to toxic chemicals throughout the supply chain, from workers to consumers and communities impacted by toxic waste.  The Environmental Law Clinic handles many toxics-reduction matters, ranging from pesticide exposure cases to the regulation of hazardous ingredients in consumer products. It also addresses other issues of environmental health and environmental justice, including climate justice and access to safe drinking water for all.

Ms. Polsky’s past environmental advocacy work has encompassed negotiating conservation easements for The Nature Conservancy; protecting threatened Pacific salmon populations through dam removal; obtaining an injunction to save 50 million national forest acres from logging and roadbuilding; and serving as a volunteer park ranger in Yosemite, Grand Canyon, and Great Smoky Mountains National Parks.

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While pharmaceuticals provide positive benefits for patients, what about workers that may be exposed during production? Elizabeth M. Vancza, Merck & Co. Inc., reveals to co-hosts Anne Chappelle and David Faulkner the role of occupational toxicologists in understanding the exposure risks of pharmaceuticals, chemicals, and other substances that may affect worker health, as well as how to protect them from these exposures.

About the Guest
Elizabeth M. Vancza, PhD, DABT, is currently an Associate Director of Occupational Toxicology at Merck & Co. Inc., where she assists business operations in the areas of occupational toxicology, potent compound safety evaluation and awareness, product quality/safety, and hazard/risk assessment. Before joining Merck in 2021, she worked as an occupational toxicologist for SafeBridge Consultants for over 10 years, serving clients worldwide, primarily from the pharmaceutical and biotechnology industries.

Dr. Vancza earned her PhD and MS degrees from New York University, with respective concentrations in inhalation toxicology and immunotoxicology, and she remains a guest lecturer for the graduate program in the areas of risk assessment and genomics. She also is an Associate Member of the Occupational Alliance for Risk Science (OARS) Workplace Environmental Exposure Level (WEEL) Committee.  

Dr. Vancza joined the Society of Toxicology (SOT) in 2004 and has remained an active member through her involvement on various committees and student outreach efforts for several Specialty Sections, Regional Chapters, and Special Interest Groups. She most recently completed a three-year term as Vice President (year one), President (year two), and Past President (year three) for the SOT Northeast Regional Chapter in 2021.

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How human activity, chemical exposures, and environmental factors combine to contribute to wildlife population declines is at the forefront of the research by Dr. Caroline Moore and other teams at the San Diego Zoo Wildlife Alliance. Dr. Moore unravels the role of toxicology in wildlife conservation with co-hosts Anne Chappelle and David Faulkner.

About the Guest
Caroline Moore, PhD, DVM, serves the San Diego Zoo Wildlife Alliance as a Scientist in Disease Investigations. In this role, she works as a veterinary toxicology researcher, providing molecular and diagnostic toxicology support. She uses toxicology, pathology, molecular diagnostics, and epidemiology to better understand how environmental contaminants, such as heavy metals, pesticides, and harmful algal blooms, create roadblocks to wildlife conservation and how to prevent them.

Dr. Moore is working on developing and applying environmental and diagnostic toxicology in Kenya, where pesticides are used indiscriminately; in Peru, where mining activities release mercury into the environment, impacting birds, bats, nonhuman primates, ocelots, and more; and in Zimbabwe, where harmful algal blooms may be an increasing threat. She is especially interested in developing noninvasive in situ diagnostic tests to better understand the challenges to endangered species and how toxicant exposures may impact future generations through altered epigenetics.

Dr. Moore earned her bachelor’s degree in biochemistry and molecular biology from the University of California Santa Cruz, assisting with necropsies and research on the decline of the southern sea otter. She earned her doctorate in pharmacology and toxicology and her veterinary medical degree at the University of California Davis while on a US Environmental Protection Agency STAR grant investigating how globally present microcystins have toxic effects on the nervous system. She spent the next year as a National Institute of Environmental Health Sciences postdoctoral fellow at the University of California Los Angeles researching how environmental contaminants may cause reproductive toxicity through epigenetics, and the next two years as the SDZWA Steel Endowed Pathology Fellow, establishing successful ways to incorporate more toxicology into conservation field programs. 

Dr. Moore is an active member of the Society of Toxicology, the American College of Toxicology, and the Society of Environmental Toxicology and Chemistry, serving on committees and boards for comparative veterinary toxicology, early career professionals, diversity and inclusion, and regional support for Southern California. As an avid hiker, camper, and wildlife enthusiast, Dr. Moore has always felt the need to support conservation efforts through her research. 

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Even chocolate companies and wineries need toxicologists. Alexandria G. Lau, ToxStrategies Inc., has worked for both and shares her experiences with co-hosts Anne Chappelle and David Faulkner. They also discuss the research and development that goes into new food products and how toxicologists play a role in food safety.

About the Guest
Alexandria G. Lau, PhD, DABT, ToxStrategies Inc., is a toxicologist with a decade of experience in the food and beverage industry. She has extensive knowledge of global regulations related to consumer products, including pesticides (US Environmental Protection Agency), food and packaging (US Food and Drug Administration, European Food Safety Authority), and alcoholic beverages (Alcohol and Tobacco Tax and Trade Bureau). 

 Working for a prominent vineyard/winery, Dr. Lau managed the company’s global quality and food safety efforts, decreasing pesticide use and overseeing growers and vintners to ensure global regulatory compliance and supply chain flexibility. For a major food product manufacturer, she managed a large portfolio of products and food safety initiatives, developing and maintaining global policies, standards, and programs for everything from contaminant/allergen management to labeling and stakeholder communication. Dr. Lau also served at a senior level for a global manufacturer of consumer products, working in safety assessment and regulatory toxicology to support development of pest control products, ensuring regulatory compliance that included California Proposition 65.

 Dr. Lau earned her PhD in toxicology and pharmacology from the University of Arizona, Tucson. She maintains a current and robust body of expertise through frequent continuing education and participation in professional associations and scientific conferences. She is often an invited speaker for association and industry events, and she has published extensively in the scientific literature. She also serves as an invited reviewer for the journals Toxicology Research and Application and Toxicological Sciences.

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Biostatistics or data science for public health—whatever you choose to call it—informs understanding of the health and environmental impacts of exposures. Emory University’s Howard Chang discusses with co-hosts Anne Chappelle and David Faulkner the intricacies of interpreting data, the controversial P value, and the team science involved in studying public health challenges.

About the Guest
Howard Chang, PhD, is a Professor in the Emory University Rollins School of Public Health Department of Biostatistics and Bioinformatics, jointly appointed to the Gangarosa Department of Environmental Health. He also serves as the Director of the Master’s Program in Biostatistics for Emory University.

Dr. Chang received a Bachelor of Science from the University of British Columbia in 2004, followed by a PhD from Johns Hopkins University in 2009. Before joining Emory University, he was a Statistical and Applied Mathematical Sciences Institute (SAMSI) postdoctoral fellow and worked with the North Carolina State University Department of Statistics and Children’s Environmental Health Initiative based at the University of Notre Dame.

Dr. Chang’s primary research interest is in the development and application of statistical methods for analyzing complex spatial-temporal exposure and health data. His current projects focus on two broad areas of population health: (1) exposure assessment for air quality and extreme weather events, especially under a changing climate; and (2) health effect estimation and impact assessment leveraging large databases, such as birth/death certificates, hospital billing records, electronic health records, and disease surveillance systems. Dr. Chang also collaborates with colleagues for studies related to ecology, infectious disease, social epidemiology, and community intervention trials.

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With limited existing research on the effects of medications and exposures on lactation, Christina D. Chambers, University of California San Diego, shares work underway to better assess risks and benefits for mom and baby. Co-hosts Anne Chappelle and David Faulkner also discuss with Dr. Chambers the tricky roles of epidemiology and observational studies.

About the Guest
Christina D. Chambers, PhD, MPH, is a Professor in the Department of Pediatrics and the Department of Family and Preventative Medicine at the University of California San Diego (UC San Diego) and Co-director of the Center for Better Beginnings. She also is a Clinical Professor in the Skaggs School of Pharmacy and Pharmaceutical Sciences at UC San Diego, Vice Chair of Clinical Research in the UC San Diego Department of Pediatrics, Director of the UC San Diego CTRI Center for Life Course Research, and Director of Clinical Research at Rady Children’s Hospital–San Diego.

Dr. Chambers is a perinatal epidemiologist specializing in environmental causes of adverse pregnancy outcomes, birth defects, and childhood disabilities, with a special focus on human teratogens (environmental agents that cause birth defects or other adverse prenatal outcomes). She is currently conducting research on the prevention of alcohol-related birth defects, the safety in pregnancy of several new medications used for the treatment of maternal health conditions, and the safety of vaccines during pregnancy. Dr. Chambers serves as an advisor to national and international organizations such as the National Institutes of Health, the US Food and Drug Administration, the Centers for Disease Control and Prevention, and the World Health Organization (WHO).

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Studying the effects of metals in whales and alligators, among other species, can offer immense insight into human health, John P. Wise Sr. tells Adverse Reactions co-hosts Anne Chappelle and David Faulkner. Dr. Wise also discusses research on chromosome instability and how you can help people everywhere make connections to the importance of environmental health.

About the Guest
John P. Wise Sr., PhD, is head of the Wise Laboratory of Environmental and Genetic Toxicology and Professor of Pharmacology and Toxicology, Distinguished University Scholar, and Chair of the Center for Environmental and Occupational Health in the University of Louisville School of Medicine. His formal education includes a bachelor's degree in biology with high distinction and recognition from George Mason University and a PhD in pharmacology from the George Washington University. 

Dr. Wise’s postdoctoral training focused on molecular epidemiology under Curtis Harris at the National Cancer Institute, followed by experience with occupational health and risk assessment as a Senior Toxicologist at Jonathan Borak and Company. He served on the faculty of the Yale University School of Medicine and the University of Southern Maine School of Public Health before joining the faculty at the University of Louisville.

Dr. Wise’s research focuses on understanding how environmental toxicants affect health and cause cancer from a “One Environmental Health” perspective, considering cellular and molecular mechanisms in both humans and wildlife. He has earned over $14 million in extramural support and published over 130 peer-reviewed research papers. His work has been featured in numerous articles in local, national, and international press and social media sites, including short documentaries with Alexandra Cousteau and Miles O’Brien.

Dr. Wise has mentored and trained over 200 faculty, postdoctoral fellows, and students in biomedical and environmental health research. He fosters a diverse, supportive, multi-layered mentoring environment and is supported by an engaging and active team of faculty, staff, and students from a diverse array of backgrounds, cultures, and perspectives. For his mentoring efforts, he was awarded the 2022 SOT Toxicologist Mentoring Award. His students have won numerous local, national, and international awards and grants and have gone onto successful careers in academia, government, industry, and nongovernmental organizations. 

Dr. Wise also has earned the Metals Career Achievement Award from the SOT Metals Specialty Section and education awards from both SOT and the Environmental Mutagenesis and Genomics Society (EMGS).

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How do you set exposure limits to protect human health in a closed container floating in space? Valerie Ryder, a toxicologist at the NASA Johnson Space Center, takes co-hosts Anne Chappelle and David Faulkner into the small world of space toxicologists, where they also discuss research involving lunar dust, bone loss, and CO2.

About the Guest
Valerie Ryder, PhD, DABT, is a board-certified toxicologist with the NASA Johnson Space Center. She received a BA in chemistry with a minor in microbiology from Texas A&M University in 2000 and a PhD in pathology from the University of Alabama at Birmingham in 2004.  

As an undergraduate, Dr. Ryder worked in the oceanography department in the laboratory of Dr. Luis Cifuentes. As a graduate student, she supported the dynamically controlled protein crystal growth shuttle flight experiment on STS-105 and studied altered differentiation of adult stem cells in modeled microgravity under the NASA Graduate Student Researcher Program. 

After completing her graduate work, Dr. Ryder worked briefly as a scientific writer before joining the toxicology group at the Texas Commission on Environmental Quality in 2005. In 2008, she accepted a position as a toxicologist with Wyle’s Integrated Science and Engineering Group. In 2010, Dr. Ryder became a NASA Civil Servant and took over as the lead for the toxicology group in 2014. She leads a team of toxicologists who work to ensure that the air and water onboard spacecraft are safe for crew health.

Disclaimer
The viewpoints and information presented in Adverse Reactions represent those of the participating individuals. Although the Society of Toxicology holds the copyright to the production, it does not vet or review the information presented, nor does presenting and distributing the Adverse Reactions podcast represent any proposal or endorsement of any position by the Society.

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From vaping to wildfire smoke to pollutants such as diesel exhaust to airborne diseases, the lungs are the organ most exposed to our external environment, according to Ilona Jaspers of the University of North Carolina at Chapel Hill. Dr. Jaspers also introduces co-hosts Anne Chappelle and David Faulkner to convergence science, a new approach to interdisciplinary work meant to bring disparate experts together.

About the Guest

Ilona Jaspers, PhD, is a Professor at the University of North Carolina at Chapel Hill (UNC-CH) in the Department of Pediatrics; Division of Rheumatology, Allergy, and Immunology; and Division of Infectious Diseases, with joint appointments in the Departments of Microbiology and Immunology as well as Environmental Sciences and Engineering. She received her undergraduate degree from Seton Hall University and her PhD in environmental health sciences from New York University. Dr. Jaspers came to UNC-CH to conduct her postdoctoral studies in the Center for Environmental Medicine, Asthma, and Lung Biology. 

Dr. Jaspers has a long-standing interest in the adverse health effects induced by inhaled pollutant exposures, especially how they affect respiratory immune responses. As the Director of the Center for Environmental Medicine, Asthma, and Lung Biology, Dr. Jaspers collaborates extensively with investigators from UNC-CH and the US Environmental Protection Agency to conduct translational studies related to air pollution health effects. Using translational human in vitro and in vivo models, research in Dr. Jaspers’s laboratory focuses on the mechanisms by which exposure to air pollutants such as ozone, woodsmoke, cigarette smoke, and e-cigarettes modifies host defense responses. 

Dr. Jaspers also is the Director of the Curriculum in Toxicology, overseeing the training and mentoring of graduate students as well as postdoctoral fellows. She is passionate about training the next generation of scientists, always encouraging trainees to get involved in non-laboratory events, such as community outreach service, K–12 education, or public health activities. She is an expert on the health effects of vaping and toxicities of e-cigarette components and has been active in the community to educate parents, teachers, health care providers, and teenagers about the dangers of vaping.

Disclaimer

The viewpoints and information presented in Adverse Reactions represent those of the participating individuals. Although the Society of Toxicology holds the copyright to the production, it does not vet or review the information presented, nor does presenting and distributing the Adverse Reactions podcast represent any proposal or endorsement of any position by the Society.

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With pre-print services, data sharing, open access, and the internet rapidly changing the journal publication landscape, Toxicological Sciences Editor-in-Chief Jeffrey M. Peters provides co-hosts Anne Chappelle and David Faulkner with perspective on how journals are adapting to the times. Dr. Peters also details how new training and guidance programs at ToxSci are aiming to enhance submissions and peer reviews.

About the Guest

Jeffrey M. Peters, PhD, is a Distinguished Professor of molecular toxicology and carcinogenesis in the College of Agricultural Sciences and the Huck Institutes of the Life Sciences at the Pennsylvania State University (Penn State). He also serves as Deputy Director of the Penn State Cancer Institute, where his role is to catalyze collaborations among cancer researchers across Penn State’s colleges and campuses.

Dr. Peters has served on many editorial boards, including that of the Journal of Biological Chemistry, and he is the Editor-in-Chief of Toxicological Sciences, the official journal of the Society of Toxicology (SOT).

Dr. Peters joined Penn State in 2000 after completing a postdoctoral fellowship at the National Cancer Institute (NCI) in Bethesda, Maryland. He holds a bachelor’s degree in dietetics and a doctorate in nutrition science, both from the University of California Davis. Dr. Peters also completed postdoctoral fellowships in the Department of Cell Biology and Human Anatomy and the Institute of Toxicology and Environmental Health at UC-Davis.

Dr. Peters holds long-standing NCI funding for his research program related to cancer and lipid metabolism. His laboratory studies the role of the peroxisome proliferator-activated receptors (PPARs) in the regulation of homeostasis, toxicology, and carcinogenesis. PPARs are members of the nuclear receptor superfamily and are critical modulators of environmental and dietary stimuli. The lab is particularly interested in delineating how natural compounds found in dietary constituents can activate PPARs, with the goal of identifying new molecules/proteins that can be targeted with existing approaches to improve the efficacy of chemoprevention and chemotherapy. These studies will likely lead to the identification of specific macronutrients that will effectively activate PPARs so that dietary formulations of agricultural products can be developed that will improve human and animal health and prevent serious diseases.

Dr. Peters also is the Associate Director of the Center for Molecular Toxicology and Carcinogenesis at Penn State and was previously the co-leader of the Cancer Institute’s Mechanisms of Carcinogenesis research program.

Disclaimer

The viewpoints and information presented in Adverse Reactions represent those of the participating individuals. Although the Society of Toxicology holds the copyright to the production, it does not vet or review the information presented, nor does presenting and distributing the Adverse Reactions podcast represent any proposal or endorsement of any position by the Society.

Send SOT thoughts on the episodes, ideas for future topics, and more.