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A portrait of a gray haired man

Howard S. Ramsdell
Associate Professor

Phone: (970) 491-5698
Fax: (970) 491-7569
Office: 114 Physiology Building



Research Interests

Dr. Ramsdell's research involves the use of biochemical approaches for the study of toxic chemical exposures and effects. Processes responsible for the bioactivation and detoxification of toxic chemicals as well as the biochemical changes caused by toxic chemical exposure are among his interests. A major research area is the use of biochemical end points as biomarkers of exposure and effects of environmental toxicants. Recent and ongoing projects include field and laboratory biomarker studies of wildlife species (mammalian, avian, amphibian) and humans potentially exposed to environmental contaminants. Another area of research active in Dr. Ramsdell's labs is the use of planaria, an invertebrate flatworm, as a model for toxicology studies.

Dr. Ramsdell currently teaches an advanced graduate level toxicology course that covers the role of biotransformation in the fate of xenobiotics and the cellular effects of toxic chemicals and their metabolites. This course provides a basis for understanding biochemical and celluar mechanisms of toxicity. Another course that he teaches is an introductory graduate course that helps new Environmental Health graduate students learn about the broad scope of environmental health sciences. This course has an emphasis on developing an awareness of the societal and political mandates for environmental health protection, describing the role of environmental health scientists.

Selected Publications

  • S.M. Strom, Ramsdell, H.S. and Archuleta A.S. Inhibition of aminolevulinic acid dehydratase activity in American dippers (Cinclus mexicanus) from a metal-impacted stream. Environmental Toxicology and Chemistry, 21,115-120 (2002).
  • C.L. Fordham, J.D. Tessari, Ramsdell, H.S. and T.J. Keefe. Effects of malathion on survival, growth, development, and equilibrium posture of bullfrog tadpoles (Rana catesbeiana). Environmental Toxicology and Chemistry, 20, 179-184 (2001).
  • Ramsdell, H.S., Foster, S.D., Newell, P.G., Perkins, C.A., and Strom, S.M. Copper Exposure and Biomarker Responses in Terrestrial Receptors. Fundamental and Applied Toxicology 42(15):338. (1998)
  • Blandin, B.A., Ramsdell, H.S., Stubblefield, W.A., and Garrison, T.D. Developmental Effects of Atrazine and Nonylphenol in Tadpoles. Fundamental and Applied Toxicology 30(1, Part 2):142. (1996)
  • Mailing Address

    Environmental & Radiological Health Sciences
    1681Campus Delivery
    Colorado State University
    Fort Collins, CO 80523
    Phone: (970) 491-7038
    Fax: (970) 491-2940
    Email: ERHSDepartment