backResearcher Profile

Dr. Matt M. Vijayan

Job Title: Assistant Professor
Employer: University of Waterloo, Dept. Biology
Place of Birth: Ponani, Kerala, India
Public School attended: S.M.K.H.S. School
High School attended: S.M.K.H.S. School
Further Education: Tamilnadu Agricultural University (B.Sc.), University of Agricultural Sciences (M.Sc.), University of Guelph (Ph.D.).
Geographic focus of research: Ontario, British Columbia, Japan, Denmark, Norway, Brazil, U.S.

Brief synopsis of current research:
Molecular and biochemical strategies involved in allowing animals to cope with stress. Using fish as a model, studies will involve characterizing the specific and non-specific gene induction and protein synthesis associated with endogenous (eg. Hormones) and/or exogenous (temperature, oxygen, salinity, xenobiotics) signals. Specific projects include:

Stress proteins and their role in the cellular stress response in fish
Environmental effects on hormonal and metabolic regulation
Development of molecular and biochemical probes for stress/toxicant detection


Recent Publications:

Mommsen, T.P., Vijayan, M.M. and Moon, T.W. 1999. Cortisol in teleosts: dynamics, mechanisms of action and metabolic regulation. Rev. Fish Biol. Fisher. (In press.)

Brauner, C.J., Ballentyne, C.L., Vijayan, M.M. and Val, A.L. 1999. Crude oil exposure affects air-breathing fequency, blood phosphate levels and ion regulation in an air-breathing teleost fish, Hopolosternum littorate. Comp. Biochem. Physiol. (In press).

Wang, T., Knudsen, P.K., Brauner, C.J., Busk, M., Vijayan, M.M. and Jensen, F.B. 1998. Copper exposure impairs intra- and extracellular acid-base regulation during hpercapnia in the fresh water rainbow trout (Oncorhynchus mykiss). J. Comp. Physiol. B. 168: 591-599.

Vijayan, M.M., Pereira, C., Kruzynski, G. and Iwama, G.K. 1998. Sublethal concentrations of contaminants induce the expression of hepatic heat shock protein 70 in two salmonids. Aquat. Toxicol. 40: 101-108.

Wilson, J.M., Vijayan, M.M., Kennedy, C.J., Iwama, G.K. and Moon, T.W. 1998. b- napthoflavone abolishes the interrenal sensitivity to ACTH stimulation in rainbow trout. J. Endocrinol. 157: 63-70.

Fish are a great model to study adaptations to the environment. There are fish that live in extreme habitats (such extreme temperatures, high salinity, high pressure, low oxygen etc.), and research using these animals provide important information about the mechanisms that allow cells/animals to cope with such extreme environments.