The sudden emergence of honeybee colony collapse disorder (CCD) in 2005 has raised the concern of losing bees for pollination in agriculture worldwide. Results from recent research have demonstrated the causal link of neonicotinoids, a group of most commonly used insecticides in the world, to the occurrence of CCD. However, the implication of CCD is beyond the losses of bees and other pollinators. The recent findings suggested a shared mechanism of which is responsible for the causation of CCD in bees with mammals. This presentation will highlight the findings in relate to the association of neonicotinoid exposure and CCD, and to discuss the interplay of sub-lethal pesticide exposure, toxicity, and risk assessment that are highly relevant to public health, but have not yet been fully delineated.
Speaker Biography - Chensheng (Alex) Lu, PhD
Chensheng (Alex) Lu, PhD
Associate Professor of Exposure Biology, Department of Environmental Health, Harvard T.H. Chan School of Public Health
Dr. Lu earned his PhD at the School of Public Health, University of Washington, Seattle. His primary research is to use variety of biomarkers for assessing human exposures to environmental chemicals in order to facilitate the identification of risk factors, as well as the formation of hypotheses for potential health effects. One of his current research projects is to integrate exposure biomarkers, physiologically based pharmacokinetic model and cumulative risk assessment tools for quantifying children’s longitudinal exposure to pesticides via dietary intakes, and its risks by comparing to benchmark doses used by the regulatory agencies. He is also interested in developing the protein adduct-base biomarker to assess the health effects from exposures to organophospate pesticides.
Dr. Lu collaborates with researchers on: 1) children’s residential pesticide exposures with Boston Housing Authority and the Committee for Boston Public Housing, 2) dietary pesticide exposures with Food and Drug Administration (FDA) regional labs, 3) biomarkers of pesticide exposure and health effects with Agricultural Health Study, 4) honeybee colonies collapsing disorder (CCD) with Harvard Center for the Environment, 5) community-based farmworker housing, exposures and health with Wake Forest University School of Medicine, and 6) exposure characterization of endocrine disrupting chemicals among custodians using conventional and green cleaning products with University of Connecticut/School of Medicine. He serves as associate editor for Environmental Health Perspectives and the Journal of Exposure Science and Environmental Epidemiology.
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