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Hold your breath: Air pollution plays role in cardiac, metabolic diseases

EAST LANSING, Mich. To explore one of the most critical health/environment intersections how the very air we breathe can cause heart disease and diabetes and contribute to the problems of obesity Michigan State University has been named a Clean Air Research Center by the Environmental Protection Agency.

A five-year, $8 million grant led by MSU's Jack Harkema, a University Distinguished Professor of pathobiology and diagnostic investigation in the College of Veterinary Medicine will fund three major research projects with the creation of the Great Lakes Air Center for Integrative Environmental Research. The research team will study the exact role air pollutants, most notably fine particles and ozone, have on cardiometabolic syndrome, a collection of interrelated risk factors leading to cardiovascular and metabolic diseases that affect about one third of adult Americans.

Signs of cardiometabolic syndrome include high blood pressure and sugar levels, abnormal triglycerides and cholesterol as well as obesity; all warning signs for the development of chronic diseases such as diabetes and atherosclerosis, Harkema said.

"In tandem, the cardiometabolic syndrome and air pollution threaten human health worldwide," he said. "We propose that not only are individuals with pre-existing abnormalities at greater risk for the health effects of air pollution exposure but that air pollution itself may promote the development of cardiometabolic syndrome."

MSU was one of four Clean Air Research Centers named by the EPA; Harvard University, the University of Washington in Seattle and Emory University/Georgia Institute of Technology in Atlanta were the other recipients. The $32 million federal effort aims to study a range of exposures to air pollution sources and their health effects across different life stages, among susceptible and vulnerable populations, and across communities where exposures may be of greater health risk.

"Air pollution in the Great Lakes region is complex due to a large diversity of multipollutant 'airsheds' (the atmospheric equivalent of watersheds)," said Harkema, whose research team includes investigators from MSU, the University of Michigan and Ohio State University. "This complexity is due to a large assortment of emission sources, including heavy industry, dense motor vehicle traffic and high concentrations of coal-fired power plants.

"The health effects of these multipollutant airsheds are complex and understudied."

The newly established Clean Air Research Center at MSU will specifically:

  • Explore how air pollution, specifically fine particulate matter and ozone, causes adverse cardiovascular effects (such as increased blood pressure) and other facets of the cardiometabolic syndrome (such as insulin resistance). Led by Harkema, the project will explore how exposure to multipollutant atmospheres in the Great Lakes may contribute to cardiovascular and metabolic disorders in laboratory rodents that mimic susceptible individuals.

  • Investigate whether short-term exposure to air pollution in humans instigate insulin resistance and elevate blood pressure. These studies will be led by Robert Brook at the University of Michigan.

  • Determine the long-term impacts of chronic exposure to air pollution and fine particulate matter. Led by Sanjay Rajagopalan from Ohio State University, the project will also use rodent models to study the correlation between air pollution and diet and genetics.

In addition to the three main projects, researchers at the new center will collect and characterize air pollution data for use by all the investigators

"Results from this important environmental health research will provide much needed information to protect human health and to safeguard the natural environment," said Paul Anastas, EPA's assistant administrator in the Office of Research and Development.


Contact: Jason Cody
Michigan State University

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Hold your breath: Air pollution plays role in cardiac, metabolic diseases
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