Gregg T Tomy

Summary

Affiliation: Fisheries and Oceans Canada
Country: Canada

Publications

  1. ncbi Enantioselective bioaccumulation of hexabromocyclododecane and congener-specific accumulation of brominated diphenyl ethers in an eastern Canadian Arctic marine food web
    Gregg T Tomy
    Department of Fisheries and Oceans, Arctic Aquatic Research Division, Winnipeg, MB R3T 2N6, Canada
    Environ Sci Technol 42:3634-9. 2008
  2. ncbi Trophodynamics of some PFCs and BFRs in a western Canadian Arctic marine food web
    Gregg T Tomy
    Fisheries and Oceans, Canada, Arctic Aquatic Research Division, Winnipeg, Manitoba R3T 2N6, Canada
    Environ Sci Technol 43:4076-81. 2009
  3. ncbi Examination of isomer specific bioaccumulation parameters and potential in vivo hepatic metabolites of syn- and anti-Dechlorane Plus isomers in juvenile rainbow trout (Oncorhynchus mykiss)
    Gregg T Tomy
    Department of Fisheries and Oceans, Arctic Aquatic Research Division, Winnipeg, MB R3T 2N6, Canada
    Environ Sci Technol 42:5562-7. 2008
  4. ncbi Fluorinated organic compounds in an eastern Arctic marine food web
    Gregg T Tomy
    Department of Fisheries and Oceans Canada, 501 University Crescent, Winnipeg, Manitoba R3T2N6, Canada
    Environ Sci Technol 38:6475-81. 2004
  5. ncbi Biotransformation enzymes and thyroid axis disruption in juvenile rainbow trout (Oncorhynchus mykiss) exposed to hexabromocyclododecane diastereoisomers
    Vince P Palace
    Department of Fisheries and Ocean, Freshwater Institute, Winnipeg, Manitoba, R3T 2N6, Canada
    Environ Sci Technol 42:1967-72. 2008
  6. doi Dechlorane plus monoadducts in a Lake Ontario (Canada) food web and biotransformation by lake trout (Salvelinus namaycush) liver microsomes
    Gregg T Tomy
    Fisheries and Oceans Canada, Arctic Aquatic Research Division, Winnipeg, Manitoba, Canada
    Environ Toxicol Chem 32:1376-81. 2013
  7. ncbi Isomers of dechlorane plus in Lake Winnipeg and Lake Ontario food webs
    Gregg T Tomy
    Department of Fisheries and Oceans, Winnipeg, Manitoba, R3T 2N6 Canada
    Environ Sci Technol 41:2249-54. 2007
  8. ncbi Dietary accumulation of hexabromocyclododecane diastereoisomers in juvenile rainbow trout (Oncorhynchus mykiss) I: bioaccumulation parameters and evidence of bioisomerization
    Kerri Law
    Department of Fisheries and Ocean, Freshwater Institute, 501 University Crescent, Winnipeg, Manitoba R3T 2N6, Canada
    Environ Toxicol Chem 25:1757-61. 2006
  9. ncbi Dietary exposure of juvenile rainbow trout (Oncorhynchus mykiss) to 1,2-bis(2,4,6-tribromophenoxy)ethane: bioaccumulation parameters, biochemical effects, and metabolism
    Gregg T Tomy
    Department of Fisheries and Oceans, Freshwater Institute, Winnipeg, Manitoba R3T 2N6, Canada
    Environ Sci Technol 41:4913-8. 2007
  10. ncbi Refinements to the diastereoisomer-specific method for the analysis of hexabromocyclododecane
    Gregg T Tomy
    Department of Fisheries and Oceans, Freshwater Institute, 501 University Crescent, Winnipeg, Manitoba, R3T 2N6 MB Canada
    Rapid Commun Mass Spectrom 19:2819-26. 2005

Collaborators

Detail Information

Publications19

  1. ncbi Enantioselective bioaccumulation of hexabromocyclododecane and congener-specific accumulation of brominated diphenyl ethers in an eastern Canadian Arctic marine food web
    Gregg T Tomy
    Department of Fisheries and Oceans, Arctic Aquatic Research Division, Winnipeg, MB R3T 2N6, Canada
    Environ Sci Technol 42:3634-9. 2008
    ....
  2. ncbi Trophodynamics of some PFCs and BFRs in a western Canadian Arctic marine food web
    Gregg T Tomy
    Fisheries and Oceans, Canada, Arctic Aquatic Research Division, Winnipeg, Manitoba R3T 2N6, Canada
    Environ Sci Technol 43:4076-81. 2009
    ..04) and in beluga (1.4) and suggests that, in part, there are differences in the efficacy of biotransforming PFOSA by whale and seal top predators that both preferentially feed on Arctic cod...
  3. ncbi Examination of isomer specific bioaccumulation parameters and potential in vivo hepatic metabolites of syn- and anti-Dechlorane Plus isomers in juvenile rainbow trout (Oncorhynchus mykiss)
    Gregg T Tomy
    Department of Fisheries and Oceans, Arctic Aquatic Research Division, Winnipeg, MB R3T 2N6, Canada
    Environ Sci Technol 42:5562-7. 2008
    ..This suggests that if metabolites of DP are detected in fish from aquatic food webs their presence is likely not from in vivo biotransformation of the parent compound...
  4. ncbi Fluorinated organic compounds in an eastern Arctic marine food web
    Gregg T Tomy
    Department of Fisheries and Oceans Canada, 501 University Crescent, Winnipeg, Manitoba R3T2N6, Canada
    Environ Sci Technol 38:6475-81. 2004
    ..The presence of perfluorinated compounds in seabirds and mammals provides evidence that trophic transfer is an important exposure route of these chemicals to Arctic biota...
  5. ncbi Biotransformation enzymes and thyroid axis disruption in juvenile rainbow trout (Oncorhynchus mykiss) exposed to hexabromocyclododecane diastereoisomers
    Vince P Palace
    Department of Fisheries and Ocean, Freshwater Institute, Winnipeg, Manitoba, R3T 2N6, Canada
    Environ Sci Technol 42:1967-72. 2008
    ..Results from these experiments indicate that all isomers have the potential to disrupt thyroid homeostasis...
  6. doi Dechlorane plus monoadducts in a Lake Ontario (Canada) food web and biotransformation by lake trout (Salvelinus namaycush) liver microsomes
    Gregg T Tomy
    Fisheries and Oceans Canada, Arctic Aquatic Research Division, Winnipeg, Manitoba, Canada
    Environ Toxicol Chem 32:1376-81. 2013
    ..The present study also shows that the concentrations of these isomers, which the authors speculate might be unintended impurities or byproducts in some technical DP formulations, exceed that of the intended product in biota...
  7. ncbi Isomers of dechlorane plus in Lake Winnipeg and Lake Ontario food webs
    Gregg T Tomy
    Department of Fisheries and Oceans, Winnipeg, Manitoba, R3T 2N6 Canada
    Environ Sci Technol 41:2249-54. 2007
    ..were also differences in the biomagnification potentials, as measured bythe trophic magnification factor (TMF), between the isomers in the Lake Winnipeg food web; no statistically significant TMFs for either isomer were found for the..
  8. ncbi Dietary accumulation of hexabromocyclododecane diastereoisomers in juvenile rainbow trout (Oncorhynchus mykiss) I: bioaccumulation parameters and evidence of bioisomerization
    Kerri Law
    Department of Fisheries and Ocean, Freshwater Institute, 501 University Crescent, Winnipeg, Manitoba R3T 2N6, Canada
    Environ Toxicol Chem 25:1757-61. 2006
    ..To our knowledge, this is the first report of bioisomerization of a halogenated organic pollutant in biota...
  9. ncbi Dietary exposure of juvenile rainbow trout (Oncorhynchus mykiss) to 1,2-bis(2,4,6-tribromophenoxy)ethane: bioaccumulation parameters, biochemical effects, and metabolism
    Gregg T Tomy
    Department of Fisheries and Oceans, Freshwater Institute, Winnipeg, Manitoba R3T 2N6, Canada
    Environ Sci Technol 41:4913-8. 2007
    ..Similar concentrations of circulating thyroid hormones, liver deiodinase enzyme activity, and thyroid glandular histology suggest that BTBPE is not a potent thyroid axis disruptor...
  10. ncbi Refinements to the diastereoisomer-specific method for the analysis of hexabromocyclododecane
    Gregg T Tomy
    Department of Fisheries and Oceans, Freshwater Institute, 501 University Crescent, Winnipeg, Manitoba, R3T 2N6 MB Canada
    Rapid Commun Mass Spectrom 19:2819-26. 2005
    ....
  11. doi Toxicokinetics of tetrabromoethylcyclohexane (TBECH) in juvenile brown trout (Salmo trutta) and effects on plasma sex hormones
    Bonnie Gemmill
    Fisheries and Oceans Canada, Arctic Aquatic Research Division, Winnipeg, Manitoba R3T 2N6, Canada
    Aquat Toxicol 101:309-17. 2011
    ..While there were occasional differences among treatment groups in circulating plasma E2, T and 11-KT levels there was no clear, temporal trend or dose-response...
  12. ncbi Biomagnification of alpha- and gamma-hexabromocyclododecane isomers in a Lake Ontario food web
    Gregg T Tomy
    Department of Fisheries and Oceans, Freshwater Institute, Winnipeg, Manitoba R3T 2N6, Canada
    Environ Sci Technol 38:2298-303. 2004
    ..4 to 10.8 for the alpha-isomer and from 0.2 to 10 for gamma-isomers...
  13. ncbi Identilication of the novel cycloaliphatic brominated flame retardant 1,2-dibromo-4-(1,2-dibromoethyl)cyclohexane in Canadian Arctic beluga (Delphinapterus leucas)
    Gregg T Tomy
    Department of Fisheries and Oceans, Arctic Aquatic Research Division, Winnipeg, MB, R3T 2N6 Canada
    Environ Sci Technol 42:543-9. 2008
    ..Observed concentrations of the beta-isomer as measured by HRMS ranged from 1.1 to 9.3 ng/g (lipid weight)...
  14. ncbi Bioaccumulation, biotransformation, and biochemical effects of brominated diphenyl ethers in juvenile lake trout (Salvelinus namaycush)
    Gregg T Tomy
    Department of Fisheries and Oceans, Freshwater Institute, Winnipeg, Manitoba, R3T 2N6 Canada
    Environ Sci Technol 38:1496-504. 2004
    ....
  15. ncbi Temporal and spatial variation in polychlorinated biphenyl chiral signatures of the Greenland shark (Somniosus microcephalus) and its arctic marine food web
    Zhe Lu
    Department of Chemistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
    Environ Pollut 186:216-25. 2014
    ....
  16. ncbi Fate of PBDEs in juvenile lake trout estimated using a dynamic multichemical fish model
    Satyendra P Bhavsar
    Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, ON, Canada M5S 3G5 Department of Fisheries and Oceans, Freshwater Institute, Winnipeg, MB, Canada, R3T 2N6
    Environ Sci Technol 42:3724-31. 2008
    ....
  17. ncbi Biotransformation of N-ethyl perfluorooctanesulfonamide by rainbow trout (Onchorhynchus mykiss) liver microsomes
    Gregg T Tomy
    Department of Fisheries and Oceans, Winnipeg, Manitoba R3T 2N6, Canada
    Environ Sci Technol 38:758-62. 2004
    ....
  18. ncbi Bioaccumulation and trophic magnification of short- and medium-chain chlorinated paraffins in food webs from Lake Ontario and Lake Michigan
    Magali Houde
    Department of Environmental Biology, University of Guelph, Guelph, Ontario N1G 2W1, Canada, Laval, Qudbec, H7C 2M7, Canada
    Environ Sci Technol 42:3893-9. 2008
    ..Given the prominence of CPs, particularly in lake waters and in lower food web organisms, further investigation is needed to evaluate the magnitude of their distribution and accumulation/magnification in the Great Lakes environment...
  19. ncbi Direct measurement of octanol-water partition coefficients of some environmentally relevant brominated diphenyl ether congeners
    Eric Braekevelt
    Department of Fisheries and Oceans, Freshwater Institute, 501 University Cresent, Winnipeg, Manitoba, Canada R3T 2N6
    Chemosphere 51:563-7. 2003
    ..The tri- and tetrabrominated congeners are in the range of optimum bioaccumulation potential...