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Deficits in attention have long been identified as a core feature in schizophrenia and related neuropsychiatric disorders. We have investigated the combined effects of neonatal treatment with domoic acid (DOM) and social isolation rearing (both putative animal models of schizophrenia) on latent inhi...
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Exposing Sprague–Dawley rat pups to very low, sub-convulsant doses of domoic acid (DOM) during perinatal development has been previously shown to result in seizure-like activity in adulthood similar to partial complex epilepsy in humans, and to produce cellular and molecular changes in the dentate...
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Changes in glutamatergic signalling during neonatal development are known to result in long-lasting changes in brain function. Previous work in our laboratory has shown that systemic administration of very low (subconvulsive) doses of the kainate receptor agonist, domoic acid, during the second post...
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Over the last several decades, elders and hunters of the Innu Nation in Labrador, Canada, have expressed concerns over perceived declines in environmental health and the integrity of country food, including caribou. The primary objective of this study was to determine links between specific health p...
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Constraint induced movement therapy (CIMT), which forces use of the impaired arm following stroke, improves functional recovery. The mechanisms underlying recovery are not well understood, necessitating further investigation into how rehabilitation may affect neuroplasticity using animal models. Ani...
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Aim: Constraint-induced movement therapy (CIMT), which forces use of the impaired arm following unilateral stroke, promotes functional recovery in the clinic but animal models of CIMT have yielded mixed results. The aim of this study is to develop a refined endothelin-1 (ET-1) model of focal ischemi...
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Epilepsy research relies heavily on animal models that mimic some, or all, of the clinical symptoms observed. We have previously described a new developmental rat model of epilepsy that demonstrates both behavioural seizures and changes in hippocampal morphology. In the current study we investigated...
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Developing new therapeutants for stroke requires animal models in which typical stroke outcomes can be detected. In rats, temporary occlusion of the middle cerebral artery (MCAo) closely resembles reversible human ischemic stroke, but most neuroprotection studies have used limited, short-term (1-2 w...
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Historically, all commercially available kainic acid has been derived from a single biological source using a consistent method of extraction and purification. That source became unavailable in 1995. Recently, three new commercial suppliers of kainic acid have made the product available, but the sou...
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It is well established that the developing brain is a highly dynamic environment that is susceptible to toxicity produced by a number of pharmacological, chemical and environmental insults. We report herein on permanent behavioural and morphological changes produced by exposing newborn rats to very ...
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We have previously reported that neonatal rats display enhanced sensitivity to domoic acid relative to adults, and that perinatal injections of low doses of domoic acid alter early associational learning in the newborn rat. The current study was designed to further investigate the effects of low dos...
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The pharmacokinetics of single-dose morphine sulphate (MS) administered intravenously (i.v.) and intramuscularly (i.m.) and of oral sustained-release morphine sulphate (OSRMS) were studied in dogs. Beagles (n = 6) were randomly assigned to six treatment groups using a Latin square design. Treatments...
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We have previously reported that serial systemic injections of low-dose (subconvulsive) domoic acid (DOM) during early postnatal development produces changes in both behavior and hippocampal cytoarchitecture in aged rats (17 months) that are similar to those seen in existing animal models of tempora...
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While it is known that glutamate is critical to CNS development and function, less is known about the role of kainate receptors, a subclass of ionotropic glutamate receptors, during ontogeny. This is especially true with respect to the emergence and expression of behaviour. It is also known that the...