title: Adenosine A2A, 5-HT1A and 5-HT7 receptor in neonatally pregnenolone-treated rats.
abstract: Steroid hormones synthesized in the brain, called 'neurosteroids', modulate neuronal activity. We treated neonatal rats with a main precursor of the neurosteroidogenesis, pregnenolone, and examined adenosine A2A receptor, 5- hydroxytryptamine (5-HT)1A and 5-HT7 receptor densities in the front-parietal cortex in juvenile and adult rats. In receptor binding assay using [3H]CGS21680 and [3H]8-OH-DPAT, it was shown that neonatal pregnenolone-treatment induced a significant decrease in the adenosine A2A receptor density with no significant effects on the 5-HT1A and 5-HT7 receptor densities.
authors.affiliation: Division of Cortical Function Disorder, National Institute of Neuroscience, National Center of Neurology and Psychiatry (NCNP), Kodaira, Tokyo, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Shirayama
authors.forename: K T
authors.initials: KT
authors.lastname: Muneoka
authors.forename: M
authors.initials: M
authors.lastname: Takigawa
authors.forename: Y
authors.initials: Y
authors.lastname: Minabe
mesh_terms: D017371:8-Hydroxy-2-(di-n-propylamino)tetralin / Q000378:metabolism; D000241:Adenosine / Q000031:analogs & derivatives* / Q000378:metabolism; D000375:Aging / Q000187:drug effects / Q000502:physiology; D000818:Animals; D000831:Animals, Newborn; D000959:Antihypertensive Agents / Q000378:metabolism; D001667:Binding, Competitive / Q000187:drug effects; D002540:Cerebral Cortex / Q000187:drug effects / Q000254:growth & development* / Q000378:metabolism; D004195:Disease Models, Animal; D004298:Dopamine / Q000378:metabolism*; D005260:Female; D008297:Male; D001523:Mental Disorders / Q000378:metabolism / Q000503:physiopathology; D010627:Phenethylamines / Q000378:metabolism; D011247:Pregnancy; D011284:Pregnenolone / Q000378:metabolism* / Q000494:pharmacology; D011869:Radioligand Assay; D051381:Rats; D017207:Rats, Sprague-Dawley; D043705:Receptor, Adenosine A2A; D018047:Receptors, Purinergic P1 / Q000187:drug effects / Q000378:metabolism*; D011985:Receptors, Serotonin / Q000187:drug effects / Q000378:metabolism*; D044263:Receptors, Serotonin, 5-HT1; D012701:Serotonin / Q000378:metabolism*; D017366:Serotonin Receptor Agonists / Q000378:metabolism; D012727:Sex Characteristics; D009435:Synaptic Transmission / Q000502:physiology
chemical_list: D000959:Antihypertensive Agents; D010627:Phenethylamines; D043705:Receptor, Adenosine A2A; D018047:Receptors, Purinergic P1; D011985:Receptors, Serotonin; D044263:Receptors, Serotonin, 5-HT1; D017366:Serotonin Receptor Agonists; C104425:serotonin 7 receptor; C061282:2-(4-(2-carboxyethyl)phenethylamino)-5'-N-ethylcarboxamidoadenosine; D012701:Serotonin; D011284:Pregnenolone; D017371:8-Hydroxy-2-(di-n-propylamino)tetralin; D000241:Adenosine; D004298:Dopamine