P A Wright

Summary

Country: Canada

Publications

  1. ncbi Lactation during hibernation in wild black bears: effects on plasma amino acids and nitrogen metabolites
    P A Wright
    Department of Zoology, University of Guelph, Guelph, Ontario N1G 2W1, Canada
    Physiol Biochem Zool 72:597-604. 1999
  2. ncbi Correlations of plasma lipid metabolites with hibernation and lactation in wild black bears Ursus americanus
    P J LeBlanc
    Department of Zoology, University of Guelph, Ontario, Canada
    J Comp Physiol B 171:327-34. 2001
  3. ncbi Effects of exercise on nitrogen excretion, carbamoyl phosphate synthetase III activity and related urea cycle enzymes in muscle and liver tissues of juvenile rainbow trout (Oncorhynchus mykiss)
    A E Todgham
    Department of Zoology, University of Guelph, Guelph, Ontario N1G 2W1, Canada
    Comp Biochem Physiol A Mol Integr Physiol 129:527-39. 2001
  4. ncbi Induction of four glutamine synthetase genes in brain of rainbow trout in response to elevated environmental ammonia
    P A Wright
    Department of Integrative Biology, University of Guelph, Guelph, ON, N1G 2W1 Canada
    J Exp Biol 210:2905-11. 2007
  5. ncbi Nitrogen metabolism and excretion in the mangrove killifish Rivulus marmoratus II. Significant ammonia volatilization in a teleost during air-exposure
    N T Frick
    Department of Zoology, University of Guelph, Guelph, Ontario, Canada N1G 2W1
    J Exp Biol 205:91-100. 2002
  6. doi Inhibition of glutamine synthetase during ammonia exposure in rainbow trout indicates a high reserve capacity to prevent brain ammonia toxicity
    L A Sanderson
    Department of Integrative Biology, University of Guelph, 488 Gordon Street, Guelph, ON, Canada, N1G 2W1
    J Exp Biol 213:2343-53. 2010
  7. ncbi Urea production and transport in teleost fishes
    P A Wright
    Department of Zoology, University of Guelph, Ontario, Canada
    Comp Biochem Physiol A Mol Integr Physiol 119:47-54. 1998
  8. doi Cutaneous vasoregulation during short- and long-term aerial acclimation in the amphibious mangrove rivulus, Kryptolebias marmoratus
    C A Cooper
    Department of Integrative Biology, University of Guelph, Guelph, Ontario, Canada N1G 2W1
    Comp Biochem Physiol B Biochem Mol Biol 161:268-74. 2012
  9. ncbi Ammonia detoxification and localization of urea cycle enzyme activity in embryos of the rainbow trout (Oncorhynchus mykiss) in relation to early tolerance to high environmental ammonia levels
    S L Steele
    Department of Zoology, University of Guelph, Guelph, Ontario, Canada N1G 2W1
    J Exp Biol 204:2145-54. 2001
  10. ncbi Dogmas and controversies in the handling of nitrogenous wastes: osmoregulation during early embryonic development in the marine little skate Raja erinacea; response to changes in external salinity
    S L Steele
    Department of Zoology, University of Guelph, Guelph, ON N1G 2W1, Canada
    J Exp Biol 207:2021-31. 2004

Collaborators

Detail Information

Publications18

  1. ncbi Lactation during hibernation in wild black bears: effects on plasma amino acids and nitrogen metabolites
    P A Wright
    Department of Zoology, University of Guelph, Guelph, Ontario N1G 2W1, Canada
    Physiol Biochem Zool 72:597-604. 1999
    ....
  2. ncbi Correlations of plasma lipid metabolites with hibernation and lactation in wild black bears Ursus americanus
    P J LeBlanc
    Department of Zoology, University of Guelph, Ontario, Canada
    J Comp Physiol B 171:327-34. 2001
    ..These findings indicate a strong correlation between plasma lipid metabolites and the denning period in a wild population of black bears...
  3. ncbi Effects of exercise on nitrogen excretion, carbamoyl phosphate synthetase III activity and related urea cycle enzymes in muscle and liver tissues of juvenile rainbow trout (Oncorhynchus mykiss)
    A E Todgham
    Department of Zoology, University of Guelph, Guelph, Ontario N1G 2W1, Canada
    Comp Biochem Physiol A Mol Integr Physiol 129:527-39. 2001
    ..Furthermore, these results indicate that urea cycle enzyme activities in skeletal muscle tissue can account for a significant portion of total urea excretion in juvenile and adult trout...
  4. ncbi Induction of four glutamine synthetase genes in brain of rainbow trout in response to elevated environmental ammonia
    P A Wright
    Department of Integrative Biology, University of Guelph, Guelph, ON, N1G 2W1 Canada
    J Exp Biol 210:2905-11. 2007
    ..Moreover, elevation of GSase activities in fore-, mid- and hindbrain in response to environmental ammonia underlines the importance of brain GSase in the ammonia-stress response...
  5. ncbi Nitrogen metabolism and excretion in the mangrove killifish Rivulus marmoratus II. Significant ammonia volatilization in a teleost during air-exposure
    N T Frick
    Department of Zoology, University of Guelph, Guelph, Ontario, Canada N1G 2W1
    J Exp Biol 205:91-100. 2002
    ..Rather, we propose that R. marmoratus are able to survive on land for extended periods without significant ammonia accumulation because they continuously release ammonia, partially by NH(3) volatilization...
  6. doi Inhibition of glutamine synthetase during ammonia exposure in rainbow trout indicates a high reserve capacity to prevent brain ammonia toxicity
    L A Sanderson
    Department of Integrative Biology, University of Guelph, 488 Gordon Street, Guelph, ON, Canada, N1G 2W1
    J Exp Biol 213:2343-53. 2010
    ..These findings indicate that rainbow trout possess a relatively large reserve capacity for ammonia detoxification and for preventing glutamate accumulation during hyperammonaemic conditions...
  7. ncbi Urea production and transport in teleost fishes
    P A Wright
    Department of Zoology, University of Guelph, Ontario, Canada
    Comp Biochem Physiol A Mol Integr Physiol 119:47-54. 1998
    ..Molecular studies have revealed that a specialised urea transport protein is present in kidney tissue of elasmobranchs, similar to the facilitated urea transporter found in the mammalian inner medulla of the kidney...
  8. doi Cutaneous vasoregulation during short- and long-term aerial acclimation in the amphibious mangrove rivulus, Kryptolebias marmoratus
    C A Cooper
    Department of Integrative Biology, University of Guelph, Guelph, Ontario, Canada N1G 2W1
    Comp Biochem Physiol B Biochem Mol Biol 161:268-74. 2012
    ....
  9. ncbi Ammonia detoxification and localization of urea cycle enzyme activity in embryos of the rainbow trout (Oncorhynchus mykiss) in relation to early tolerance to high environmental ammonia levels
    S L Steele
    Department of Zoology, University of Guelph, Guelph, Ontario, Canada N1G 2W1
    J Exp Biol 204:2145-54. 2001
    ..The data indicate that trout embryos have an efficient system to prevent ammonia accumulation in embryonic tissue, by conversion of ammonia to urea in embryonic tissues and through elevation of ammonia levels in the yolk...
  10. ncbi Dogmas and controversies in the handling of nitrogenous wastes: osmoregulation during early embryonic development in the marine little skate Raja erinacea; response to changes in external salinity
    S L Steele
    Department of Zoology, University of Guelph, Guelph, ON N1G 2W1, Canada
    J Exp Biol 207:2021-31. 2004
    ..Interestingly, these ureosmotic mechanisms are in place as early as 4 months, around the time at which the egg capsule opens and the embryo is in more direct contact with the external environment...
  11. doi Carrier-mediated urea transport across the mitochondrial membrane of an elasmobranch (Raja erinacea) and a teleost (Oncorhynchus mykiss) fish
    T M Rodela
    Department of Zoology, University of Guelph, Guelph, Ontario, Canada
    Am J Physiol Regul Integr Comp Physiol 294:R1947-57. 2008
    ..Rapid equilibration of urea across the mitochondrial membrane may be vital for cell osmoregulation (elasmobranch) or nitrogen waste excretion (teleost)...
  12. ncbi Gill morphology of the mangrove killifish (Kryptolebias marmoratus) is plastic and changes in response to terrestrial air exposure
    K J Ong
    Department of Integrative Biology, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
    J Exp Biol 210:1109-15. 2007
    ..marmoratus to thrive in both aquatic and terrestrial habitats...
  13. doi Water chemistry in the microenvironment of rainbow trout Oncorhynchus mykiss embryos is affected by development, the egg capsule and crowding
    H A Dhiyebi
    Department of Integrative Biology, University of Guelph, Guelph, ON, Canada
    J Fish Biol 82:444-57. 2013
    ....
  14. ncbi The mechanisms of urea transport by early life stages of rainbow trout (Oncorhynchus mykiss)
    C M Pilley
    Department of Zoology, University of Guelph, Guelph, Ontario, Canada N1G 2W1
    J Exp Biol 203:3199-207. 2000
    ..These results indicate that urea excretion in trout embryos is dependent, in part, on a phloretin-sensitive facilitated urea transporter similar to that reported in mammalian inner medullary collecting ducts and elasmobranch kidney...
  15. ncbi Rapid increase in the partial pressure of NH3 on the cutaneous surface of air-exposed mangrove killifish, Rivulus marmoratus
    S L Litwiller
    Department of Integrative Biology, University of Guelph, Guelph, Ontario N1G 2W1, Canada
    J Exp Biol 209:1737-45. 2006
    ..Together, these data indicate that during air exposure, R. marmoratus utilize the cutaneous surface as a key site of NH(3) volatilization...
  16. ncbi Rhesus glycoprotein gene expression in the mangrove killifish Kryptolebias marmoratus exposed to elevated environmental ammonia levels and air
    C Y C Hung
    Department of Integrative Biology, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
    J Exp Biol 210:2419-29. 2007
    ..Furthermore, the findings support earlier studies demonstrating that the skin is an important site of ammonia excretion in K. marmoratus...
  17. ncbi Genome organization of glutamine synthetase genes in rainbow trout (Oncorhynchus mykiss)
    K Gharbi
    Department of Integrative Biology, University of Guelph, Guelph, Canada
    Cytogenet Genome Res 116:113-5. 2007
    ..In contrast, there is at present no further evidence that RT-24 and RT-08 share ancestrally homologous segments and additional genomic studies will be needed to clarify the evolutionary origin of genes coding for GS01 and GS03...
  18. ncbi Nitrogen metabolism and excretion in the mangrove killifish Rivulus marmoratus I. The influence of environmental salinity and external ammonia
    N T Frick
    Department of Zoology, University of Guelph, Guelph, Ontario, Canada N1G 2W1
    J Exp Biol 205:79-89. 2002
    ..The data suggest that killifish continue to eliminate ammonia despite an unfavourable blood-to-water gradient, thereby avoiding accumulation of ammonia...