Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 40 for “"neurotransmitter systems"”.
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Investigation of Monoaminergic Neurotransmitter Systems as a Method to Study Alzheimer's Disease-Related Neurodegeneration
… analyses of brainstem monoaminergic (MAergic) systems in the APPSwe/PS1ΔE9 was the first to show that Aβ pathology could induce progressive neurodegeneration in vivo [23]. Subsequent studies expanded on these observations showing degeneration initiating at axon terminals and progressing to cell …
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Treatment During Abstinence from Methamphetamine in a Rat Model of Methamphetamine Use Disorder
… with changes to the dopamine and glutamate neurotransmitter systems, as well as inflammation. Phosphodiesterase-4 inhibitors are known to affect cAMP involved in dopaminergic and glutamatergic neurotransmission, as well as having anti-inflammatory action. In pre-clinical models, …
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Habit Formation in a Rodent Model of Alcoholism: Genetic Susceptibility, Alcohol-Specific Effects, and Pharmacological Manipulation
… toward lower neurological mechanisms. While many neurotransmitter systems have a demonstrated involvement in this process, the dopamine system is particularly implicated. Habit formation is assessed through the maintenance of extinction responding for an undesired, or devalued, outcome.
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Cortical Eeg Following Bilateral Lateral Hypothalamic Damage: Effects of Drugs Acting on Some Components of the Reticular Formation (Hippocampus, Animal-Model, Pharmacology)
… normal rat does, may reflect disruption of some neurotransmitter components of the reticular formation known to contribute to cortical LVF-activation. The purpose of this investigation was to find whether drugs which enhance or mimic the action of these reticular neurotransmitter systems …
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Effects of nicotine on content of corticotropin releasing factor (CRF) in rat amygdala, hypothalamus and brain stem
… to stress, fear and anxiety, influences the same neurotransmitter systems as nicotine, a psychoactive component of tobacco. Radioimmunoassays revealed that in macro-dissected hypothalami, 15 minutes treatment with 1.0 mg/kg nicotine significantly increased CRF content compared to no treatment. The …
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Investigation of Carbamathione Pharmacokinetics and Pharmacodynamics by In Vivo Microdialysis and Capillary Electrophoresis
… receptor. The effect of carbamathione on the neurotransmitter systems involved in craving and addiction is unknown. The aim of this research project was to develop analytical methods to determine carbamathione and relevant neurotransmitters in rat brain microdialysis samples in order to …
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Neurochemical Mechanisms in the Hypothalamus and Attenuation of Compensatory Hormone Responses to Recurrent Hypoglycemia
… recurrent hypoglycemia. Moreover, noradrenergic neurotransmitter systems in the hypothalamus are activated to a decrease in ambient glucose, and their responsiveness is preserved after recurrent daily hypoglycemic episodes on three consecutive days. From the present work it became evident that …
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INTRACRANIAL INFUSIONS OF NEUROTENSIN AGONISTS PRODUCE AN ANXIOLYTIC PROFILE IN A RAT ULTRASONIC VOCALIZATION MODEL
<p>Neurotensin (NT) is a peptide neurotransmitter that interacts with brain monoamine neurotransmitter systems. It has been demonstrated that neurotensin type 1 and type 2 receptor agonists influence animal models of psychological disorders and pain regulation, respectively. It has already been …
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Genomic and non genomic effects of elevated concentration of anabolic steroids in human neuronal cells
… can alter the expression and function of neurotransmitter systems and contribute to neuronal cell death. This effect can explain the behavioural changes, drug dependence and neuro degeneration observed in steroid abuser. Nandrolone treatment (10-8M–10-5M) caused a time- and …
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Molecular bases of scouting behavior in honey bees
… dopaminergic, octopaminergic and glutamatergic systems. I found significant brain down- regulation of the D1-type dopamine receptor genes and upregulation of the octopamine receptor genes in scouts compared to non-scouts. Microarray analysis confirmed these findings and further implicated …
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Astrocytic Contribution to the Glutamatergic Transmission in Schizophrenia
… exists for abnormalities within all the main neurotransmitter systems and various cortical and subcortical brain structures, albeit with no unifying/overarching hypothesis connecting the existent knowledge. Moreover, no current animal model or biological construct reproduces the complexity of …
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Opiate Regulation of Lordosis: Neurochemical Evaluation of the Role of Opiate-Serotonergic Interactions
… of lordosis, and to examine the role of other neurotransmitter systems in the actions of opiates. The opiate antagonist naltrexone was found to facilitate lordosis in estrogen-primed rats. Naltrexone facilitated behavior was compared to the facilitation of behavior by progesterone. The medial …
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Regulation of dorsal raphe serotonergic neurons by histamine
… cycle results from the complex interaction of neurotransmitters systems, which arise from anatomically and chemically defined brain structures. Serotonergic neurons located in the dorsal raphe nucleus (DRN) are currently accepted to be wake-promoting however their precise regulation by other …
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Investigating the neurobiology regulating cognitive effort allocation using a rodent model of cost/benefit decision making
… literature investigating the brain regions and neurotransmitter systems guiding these respective forms of decision making, and then carries out a set of experiments to further characterize the neurobiology guiding cognitive effort allocation. These experiments utilize an animal model of decision …
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Functional Organization and Information Processing Within the Suprachiasmatic Nucleus Assessed by Multiunit Recording in Vitro
… drugs was used to test several of the classical neurotransmitter systems present in the SCN. Most treatments elicited both excitatory and inhibitory responses (during separate trials). The majority of MUA responses to pharmacological treatments were consistent with the expected direct effects of …
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Striatal Dopamine Dynamics Upon Manganese Accumulation
… is observed, indicating the involvement of other neurotransmitter systems in the onset of motor deficits following Mn exposure. Finally, by methodically evaluating the quantity and functionality of dopamine vesicles at the axon terminal, we were able to provide evidence against the theory that …
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The Role of CLOCK in Regulation of Dopamine Neurotransmission in the CLOCKdelta19 Mutant Mouse Model
… significant cross-talk with many of the brain’s neurotransmitter systems. The purpose of this dissertation is to characterize the role of CLOCK in regulating dopamine transmission in mood and reward-related circuits. We present a mechanism by which CLOCK regulates dopaminergic activity in the …
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Role of the Serotonin (5-HT) 5-HT2C Receptor (5-HT2CR) in Cocaine Cue Reactivity
… outcomes and extend abstinence. Serotonin (5-HT) neurotransmitter systems play an important role in the behavioral effects of cocaine particularly through the 5-HT2C receptor (5-HT2CR), however, the involvement of this system in incubation of cue reactivity during abstinence from cocaine …
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INDIVIDUAL DIFFERENCES IN IMPULSIVE ACTION AND TEMPORAL ESTIMATION: INTERACTION WITH THE SEROTONIN (5-HT) 5-HT2A RECEPTOR
… pathways (e.g., prefrontal cortex, PFC) and neurotransmitter systems (e.g., serotonin, 5-HT) that regulate impulsive action. Manipulation of the 5-HT2A receptor (5-HT2AR) influences impulsive action and timing functions, suggesting that functional capacity of the 5-HT2AR system may drive the …
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Role of the Serotonin (5-HT) 5-HT2C Receptor (5-HT2CR) in Cocaine Cue Reactivity
… outcomes and extend abstinence. Serotonin (5-HT) neurotransmitter systems play an important role in the behavioral effects of cocaine particularly through the 5-HT2C receptor (5-HT2CR), however, the involvement of this system in incubation of cue reactivity during abstinence from cocaine …
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