Melissa Y.T. Chan

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Prior high corticosterone exposure reduces activation of immature neurons in the ventral hippocampus in response to spatial and nonspatial memory

Joanna L. Workman, Melissa Y.T. Chan, Liisa A.M. Galea

Chronic stress or chronically high glucocorticoids attenuate adult hippocampal neurogenesis by reducing cell proliferation, survival, and differentiation in male rodents. Neurons are still produced in the dentate gyrus during chronically high glucocorticoids, but it is not known whether these new neurons are appropriately activated in response to spatial memory. Thus, the goal of this study was to...

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Impairment of lithium chloride-induced conditioned gaping responses (anticipatory nausea) following immune system stimulation with lipopolysaccharide (LPS) occurs in both LPS tolerant and LPS non-tolerant rats

Melissa Y.T. Chan, Shelley K. Cross-Mellor, Martin Kavaliers, Klaus-Peter Ossenkopp

Brain Behavior and Immunity > 2013 > 27 > Complete > 123-132

Anticipatory nausea is a classically conditioned response to a context that has been previously paired with toxin-induced nausea and/or vomiting. When injected with a nausea-inducing drug, such as lithium chloride (LiCl), rats will show a distinctive conditioned gaping response that has been suggested to be an index of nausea. Previous studies have found that immune system activation with an endotoxin,...

article

Inhibition of LiCl-induced conditioning of anticipatory nausea in rats following immune system stimulation: Comparing the immunogens lipopolysaccharide, muramyl dipeptide, and polyinosinic: polycytidylic acid

Caylen J. Cloutier, Melinda-Sue Rodowa, Shelley K. Cross-Mellor, Melissa Y.T. Chan, more

Physiology & Behavior > 2012 > 106 > 2 > 243-251

The effects of the bacterial endotoxins, lipopolysaccharide (LPS) and muramyl dipeptide (MDP; Experiment 1), and the viral mimetic, polyinosinic: polycytidylic acid (poly I:C; Experiment 2), on the acquisition of “conditioned gaping” behavior in the rodent model of LiCl-induced anticipatory nausea were examined. Experimentally naïve adult male Long–Evans rats were injected (intraperitoneal, ip) with...

article

Acute corticosterone increases conditioned spontaneous orofacial behaviors but fails to influence dose related LiCl-induced conditioned “gaping” responses in a rodent model of anticipatory nausea

Klaus-Peter Ossenkopp, Elissa Biagi, Caylen J. Cloutier, Melissa Y.T. Chan, more

European Journal of Pharmacology > 2011 > 660 > 2-3 > 358-362

Acute administration of corticosterone has been shown to facilitate learning in a number of associative paradigms, including LiCl-induced conditioned taste aversion learning. The present study examined the effects of acute corticosterone on LiCl-induced conditioned anticipatory nausea in male rats. Anticipatory nausea is produced by pairing a novel distinctive context with the nausea-inducing effects...

article

Lipopolysaccharide (LPS) blocks the acquisition of LiCl-induced gaping in a rodent model of anticipatory nausea

Melissa Y.T. Chan, Shelley K. Cross-Mellor, Martin Kavaliers, Klaus-Peter Ossenkopp

Neuroscience Letters > 2009 > 450 > 3 > 301-305

The effects of systemic treatment with lipopolysaccharide (LPS) on conditioned gaping in a rodent model of anticipatory nausea were examined. Stimulation of the immune system has been found to enhance, impair, or have no effect on various learning and memory tasks. The development of anticipatory nausea is formed through a classically conditioned response to a context that has been paired previously...

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Search results for: Melissa Y.T. Chan

Prior high corticosterone exposure reduces activation of immature neurons in the ventral hippocampus in response to spatial and nonspatial memory

Impairment of lithium chloride-induced conditioned gaping responses (anticipatory nausea) following immune system stimulation with lipopolysaccharide (LPS) occurs in both LPS tolerant and LPS non-tolerant rats

Inhibition of LiCl-induced conditioning of anticipatory nausea in rats following immune system stimulation: Comparing the immunogens lipopolysaccharide, muramyl dipeptide, and polyinosinic: polycytidylic acid

Acute corticosterone increases conditioned spontaneous orofacial behaviors but fails to influence dose related LiCl-induced conditioned “gaping” responses in a rodent model of anticipatory nausea

Lipopolysaccharide (LPS) blocks the acquisition of LiCl-induced gaping in a rodent model of anticipatory nausea

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INFONA - science communication portal

Search results for: Melissa Y.T. Chan

Prior high corticosterone exposure reduces activation of immature neurons in the ventral hippocampus in response to spatial and nonspatial memory

Impairment of lithium chloride-induced conditioned gaping responses (anticipatory nausea) following immune system stimulation with lipopolysaccharide (LPS) occurs in both LPS tolerant and LPS non-tolerant rats

Inhibition of LiCl-induced conditioning of anticipatory nausea in rats following immune system stimulation: Comparing the immunogens lipopolysaccharide, muramyl dipeptide, and polyinosinic: polycytidylic acid

Acute corticosterone increases conditioned spontaneous orofacial behaviors but fails to influence dose related LiCl-induced conditioned “gaping” responses in a rodent model of anticipatory nausea

Lipopolysaccharide (LPS) blocks the acquisition of LiCl-induced gaping in a rodent model of anticipatory nausea

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