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Cystathionine γ-lyase and hypoxia : implicating hydrogen sulfide in the hypoxic stress response
(2012-11-10)
Hydrogen sulfide (H2 S) has emerged as a novel and important gasotransmitter for the cardiovascular system, where it is generated mainly by cystathionine γ-lyase (CSE). Abnormal metabolism and functions of the H2 S/CSE ...
Chemoreception in invasive rusty crayfish (Orconectes rusticus): learning and adaptation in aquatic ecosystems of Northwestern Ontario
(2012-11-10)
Crayfish utilize chemosensory cues, in addition to other sensory inputs, to mediate a
variety of fundamental life processes. Exotic species, like the rusty crayfish (Orconectes
rusticus), are known to employ a broader ...
The Impacts of forest management practices on mercury contamination in small stream biota
(2012-11-10)
Mercury is a contaminant of global concern as it is present in all biota and ecosystems around the world. Small streams are influenced by the terrestrial systems that feed them. I examined the presence of mercury in small ...
Characterization of rainbow trout (Oncorhynchus mykiss) and fathead minnow (Pimephales promelas) cell lines as models to study pulp and paper effluent effects in fish
(2012-11-10)
The effects of aquatic toxicants on fish growth and development have been well-documented, in contrast to the changes in gene expression that necessarily precede them. Many of these toxicants are exogenous compounds that ...
Aspects of infectious agents and cancer : effects of human Papillomavirus 16 and Escherichia coli on the innate immune defense of human keratinocytes
(2012-11-10)
Persistent human papillomavirus (HPV) is the causative agent of cervical cancer and bacterial vaginosis (BV) caused by Escherichia coli (E. coli ) has been implicated as a contributing factor. The innate immune system is ...
Lignin Degradation by some wood-rot fungi with emphasis on cylindrocladium camelliae
(2012-11-10)
Thirty wood-rot fungi were screened for their ability to grow on media containing Kraft lignin with a limited amount of glucose. Of these fungi, twenty-three were tested for ligninolytic activity judged by decolorization ...
Geochemical and toxicological investigation of the Hogarth and Caland Pit Lakes, former Steep Rock Iron Mine site
(2012-11-10)
The closure of the Steep Rock Iron Mines near Atikokan, Ontario, Canada in the late 1970's left behind an area of severe environmental concern. The subsequent flooding of the pit mines resulted in the formation of two ...
The Influence of wetlands and watershed geology on lake chemistry of five remote lakes in Northwestern Ontario
(2012-11-10)
In chapter 1 of this study the relationship between spatial, chemical, and
biological factors and their influence on mercury concentration s in walleye were
examined. Water, sediment, and fish tissue samples were collected ...
Reconstructing childhood and adulthood diets from a Caribbean population using stable carbon and nitrogen isotope analysis of dentin and bone collagen
(2012-11-10)
The purpose of this study was to establish stable carbon (C) and nitrogen (N) isotope signatures for the 43 individuals in this study population using bone and dentin collagen, and extrapolate the isotopic data to dietary ...
The Role of free- and liposomal-N-acetycysteine in paraquat-induced cytotoxicity
(2012-11-10)
Paraquat (PQ), one of the most commonly used herbicides worldwide, is hightly toxic to humans and exposure can result in severe clinical situations with no effective treatments available. The toxicity of PQ has been ...