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Behavioural Brain Research
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Abstract 3,4-methylenedioxymethamphetamine (MDMA) recently achieved breakthrough status from the Food and Drug Administration (FDA) for post-traumatic stress disorder (PTSD). However, evidence indicates that exposure to toxic doses of 3,4-methylenedioxymethamphetamine (MDMA) can lead to long-lasting dysregulation of brain monoaminergic neurotransmitters, primarily from studies conducted in young adult rodents. To date, there is a paucity of data on whether toxic doses of MDMA can differentially ...
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Abstract Exposure to prenatal maternal stress impacts adult behavioral outcomes and has been suggested as a risk factor for chronic pain. However, the neurobiological mechanisms implicated are not well-characterized. In this study, we analyzed the effect of a prenatal maternal stress on the development of neuropathic pain-related behaviours and gene expression in the frontal cortex and hippocampus in adult offspring following chronic constriction injury of the sciatic nerve in male and female CD...
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Abstract Ischemic stroke (IS) caused by cerebral arterial embolism remains the leading cause of disability and death worldwide. Cerebral ischemia / reperfusion (CI / R) injury is one of the common complications of ischemic stroke. Growth arrest specific transcript 5 (GAS5) has been found to be abnormally expressed in various tumors. However, the role and potential molecular mechanisms of GAS5 in CI / R-induced injury remain unknown. This study established a CI / R injury model in vivo and in vit...
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Abstract Mental imagery related to the recent death of a loved one is associated with intense sadness and distress. Social relations, such as with one’s significant other, can regulate negative emotions and provide comfort, but the neural correlates of social comfort are largely unknown. In this functional magnetic resonance imaging study, we examined brain responses to sad mental imagery and how these are modulated by holding hands with one’s romantic partner. We found that mental imagery of a ...
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Abstract Objective Impulsivity is a key, trait-like feature of the decision-making process. As personality traits are stable over time, we hypothesized that resting-state (RS) neural activity would predict individual impulsivity. Methods Thirty-five healthy individuals underwent fMRI scan during RS and subsequently performed the Balloon Analogue Risk Task (BART). In BART, impulsivity was inversely correlated to monetary earnings. A group-level whole-brain regression assessed the relationship bet...
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Abstract Ferric chloride-induced distal middle cerebral artery occlusion (MCAO) model of stroke was described in mice several years ago, however it lacked in-depth evaluation of the post-stroke functional outcomes in the animals. In this study, we reproduced the recently developed model and expanded its characterization by thorough evaluation of blood supply, cerebral infarction, and motor function in adult male and female mice up to 14 days after stroke. Our observations indicate near complete ...
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Abstract The development of sensitization is one of the hallmarks of addictive drugs. Consistent with this relationship many studies have demonstrated that the highly addictive opioid agonist morphine induces sensitization effects. In this study, we administered morphine (10 mg/kg) (MOR) to induce sensitization. In that sensitization is considered to involve associative processes and that dopamine activity is an important contributor to learning and memory processes, we administered a dopamine i...
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ABSTRACT The hippocampus plays a fundamental role in spatial learning and memory. Dentate gyrus (DG) granular neurons project mainly to proximal apical dendrites of neurons in the CA3 stratum lucidum and also, to some extent, to the basal dendrites of CA3 pyramidal cells in the stratum oriens. The terminal specializations of DG neurons are the mossy fibers (MF), and these huge axon terminals show expansion in the CA3 stratum oriens after the animals undergo overtraining in the Morris Water Maze ...
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Abstract Physical exercise is well-established paradigm for improving adult neurogenesis and brain functions. As considered as an alternative therapeutic strategy, treadmill running could reduce cognitive impairment and psychiatric abnormalities associating post-traumatic stress disorder (PTSD), which might associate with the promote effects to adult neurogenesis. In current study, we aimed to address how treadmill exercise benefit adult hippocampal neurogenesis in PTSD model and the underlying ...
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Abstract Clinical findings show that a single subanesthetic dose of ketamine elicits rapid antidepressant effects. Accumulating data suggests that ketamine blocks the N-methyl-D-aspartate receptor and results in specific effects on intracellular signaling including increased brain-derived neurotrophic factor (BDNF) protein expression, which augments synaptic responses required for rapid antidepressant effects. To further investigate this potential mechanism for ketamine’s antidepressant action, ...
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