Neonatal administration of quinpirole produces significant increases in D2 receptor sensitivity that persists into adulthood. This phenomenon, known as D2 receptor priming, is consistent with pathology in schizophrenia. Rats were administered quinpirole or saline postnatally and raised to adulthood. In adulthood, rats were administered d-amphetamine sulfate or saline every other day and were placed in a locomotor arena where activity was measured over 7 trials. Results showed that D2-primed rats receiving amphetamine were higher in locomotor activity across all days of testing compared to other groups. This effect was more prominent in males than in females. After sensitization, cerebrospinal fluid was taken via microdialysis from the nucleus accumbens core and was analyzed for dopamine content. Analysis revealed D2 priming produced a 300% increase of dopamine release in the nucleus accumbens core in response to amphetamine compared to controls. These results suggest that increases in D2 sensitivity may lead to increased reaction to amphetamine in psychotic individuals.
","abstract_html":"<p>Neonatal administration of quinpirole produces significant increases in D<sub>2</sub> receptor sensitivity that persists into adulthood. This phenomenon, known as D<sub>2</sub> receptor priming, is consistent with pathology in schizophrenia. Rats were administered quinpirole or saline postnatally and raised to adulthood. In adulthood, rats were administered d-amphetamine sulfate or saline every other day and were placed in a locomotor arena where activity was measured over 7 trials. Results showed that D<sub>2</sub>-primed rats receiving amphetamine were higher in locomotor activity across all days of testing compared to other groups. This effect was more prominent in males than in females. After sensitization, cerebrospinal fluid was taken via microdialysis from the nucleus accumbens core and was analyzed for dopamine content. Analysis revealed D<sub>2</sub> priming produced a 300% increase of dopamine release in the nucleus accumbens core in response to amphetamine compared to controls. These results suggest that increases in D<sub>2</sub> sensitivity may lead to increased reaction to amphetamine in psychotic individuals.</p>","abstract_has_math":false,"creators":["Cope, Zackary Adam"],"institution":null,"degree_name":"MA (Master of Arts)","degree_level":"Thesis - unrestricted","degree_discipline":"Psychology","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2008,"date_issued":"2008-08-12T07:00:00Z","date_published":"2008-08-12T07:00:00Z","updated_at":"2026-07-24T02:21:11Z","subjects":["D2 Priming","Quinpirole","Schizophrenia","Amphetamine","Psychostimulant","Microdialysis","Sensitization","Sex Differences","Life Sciences","Molecular and Cellular Neuroscience","Neuroscience and Neurobiology"],"languages":[],"rights":["Copyright by the authors."],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://dc.etsu.edu/etd/1953","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Cope, Zackary Adam"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.issued","label":"Date","values":["2008-08-12T07:00:00Z"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Psychology"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis - unrestricted"]},{"key":"thesis:degree_name","label":"Degree Name","values":["MA (Master of Arts)"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["D2 Priming","Quinpirole","Schizophrenia","Amphetamine","Psychostimulant","Microdialysis","Sensitization","Sex Differences","Life Sciences","Molecular and Cellular Neuroscience","Neuroscience and Neurobiology"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:rights","label":"Dc Rights","values":["Copyright by the authors."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://dc.etsu.edu/context/etd/article/3305/viewcontent/CopeZ061908f.pdf","https://dc.etsu.edu/etd/1953"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Neonatal administration of quinpirole produces significant increases in D2 receptor sensitivity that persists into adulthood. This phenomenon, known as D2 receptor priming, is consistent with pathology in schizophrenia. Rats were administered quinpirole or saline postnatally and raised to adulthood. In adulthood, rats were administered d-amphetamine sulfate or saline every other day and were placed in a locomotor arena where activity was measured over 7 trials. Results showed that D2-primed rats receiving amphetamine were higher in locomotor activity across all days of testing compared to other groups. This effect was more prominent in males than in females. After sensitization, cerebrospinal fluid was taken via microdialysis from the nucleus accumbens core and was analyzed for dopamine content. Analysis revealed D2 priming produced a 300% increase of dopamine release in the nucleus accumbens core in response to amphetamine compared to controls. These results suggest that increases in D2 sensitivity may lead to increased reaction to amphetamine in psychotic individuals.
"]},{"key":"dc:title","label":"Title","values":["Amphetamine Sensitization and in vivo Microdialysis of the Nucleus Accumbens Core of Adult Male and Female Rats D2-Primed as Neonates."]}]}],"canonical_facts":{"dc:creator":["Cope, Zackary Adam"],"dc:date.issued":["2008-08-12T07:00:00Z"],"dc:description.abstract":["Neonatal administration of quinpirole produces significant increases in D2 receptor sensitivity that persists into adulthood. This phenomenon, known as D2 receptor priming, is consistent with pathology in schizophrenia. Rats were administered quinpirole or saline postnatally and raised to adulthood. In adulthood, rats were administered d-amphetamine sulfate or saline every other day and were placed in a locomotor arena where activity was measured over 7 trials. Results showed that D2-primed rats receiving amphetamine were higher in locomotor activity across all days of testing compared to other groups. This effect was more prominent in males than in females. After sensitization, cerebrospinal fluid was taken via microdialysis from the nucleus accumbens core and was analyzed for dopamine content. Analysis revealed D2 priming produced a 300% increase of dopamine release in the nucleus accumbens core in response to amphetamine compared to controls. These results suggest that increases in D2 sensitivity may lead to increased reaction to amphetamine in psychotic individuals.
"],"dc:identifier":["https://dc.etsu.edu/context/etd/article/3305/viewcontent/CopeZ061908f.pdf","https://dc.etsu.edu/etd/1953"],"dc:rights":["Copyright by the authors."],"dc:subject":["D2 Priming","Quinpirole","Schizophrenia","Amphetamine","Psychostimulant","Microdialysis","Sensitization","Sex Differences","Life Sciences","Molecular and Cellular Neuroscience","Neuroscience and Neurobiology"],"dc:title":["Amphetamine Sensitization and in vivo Microdialysis of the Nucleus Accumbens Core of Adult Male and Female Rats D2-Primed as Neonates."],"thesis:degree_discipline":["Psychology"],"thesis:degree_level":["Thesis - unrestricted"],"thesis:degree_name":["MA (Master of Arts)"]},"updated_at":"2026-07-24T02:21:11Z"}