Sökning: "VTA"
Visar resultat 1 - 5 av 37 avhandlingar innehållade ordet VTA.
1. Across Borders : A Histological and Physiological Study of the Subthalamic Nucleus in Reward and Movement
Sammanfattning : The basal ganglia are the key circuitry controlling movement and reward behavior. Both locomotion and reward-related behavior are also modified by dopaminergic input from the substantia nigra and the ventral tegmental area (VTA). LÄS MER
2. Importance of endogenous kynurenic acid in brainm catecholaminergic processes and in the pathophysiology of schizophrenia
Sammanfattning : Kynurenic acid is a metabolite of tryptophan and the only known naturally occurring NMethylD-Aspartic acid (NMDA)-receptor antagonist (at the co-agonist glycine site) in the human brain. The aim of the present work was to investigate the physiological and pharmacological significance of endogenous kynurenic acid as well as its putative pathophysiological implications. LÄS MER
3. On natural and drug-induced reward : genetic, biochemical and behavioral comparisons
Sammanfattning : Work in this thesis compares natural and drug- induced reward at genetic, biochemical and behavioral levels with the objective to obtain information about key mechanisms underlying reward and addiction, and improve the understanding of compulsive elements that characterize addiction. Surveys among committed human runners have described running as addictive. LÄS MER
4. Exploring Diversity in the Midbrain Dopamine System with Emphasis on the Ventral Tegmental Area
Sammanfattning : Midbrain dopamine neurons of the substantia nigra pars compacta (SNc) and ventral tegmental area (VTA) are important for motor, cognitive and limbic functions through substantial projections to forebrain structures. Dysfunction of the midbrain dopamine system is associated with several disorders, including Parkinson´s disease (PD) and substance use disorder. LÄS MER
5. Substance P Endopeptidase : Purification and Characterizataion of Enzyme Activity and Evaluation of its Function during Stressful Condition
Sammanfattning : The purification and biochemical characterization of the substance P (SP) hydrolyzing enzyme, substance P endopeptidase (SPE), have been carried out; with subsequent orientation in neurobiological fundamental processes involved in opioid dependence, withdrawal, and heat-stress.SPE was purified from rat spinal cord, human spinal cord and cerebrospinal fluid (CSF), rat ventral tegemental area (VTA), and rat hippocampus. LÄS MER