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YKP1447, A Novel Potential Atypical Antipsychotic Agent
SeonMinDong, YongGilKim, JoonHeo, MiKyungJi, JeongWooCho, ByongSungKwak 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2009, Vol.13 No.2 1 71-78 (8 pages)
In the behavioral studies using mice, YKP1447 antagonized the apomorphine-induced cage climbing (ED50=0.93 mg/kg) and DOI-induced head twitch (ED50=0.18 mg/kg) behavior. In the dextroamphetamine-induced hyperactivity and conditioned avoidance response (CAR) paradigm in rats, YKP1447 inhibited the hyperactivity induced by amphetamine (ED50=0.54 mg/kg) and the avoidance response (ED50=0.48 mg/kg); however, unlike other antipsychotic drugs, catalepsy was observed only at much higher dose (ED50=68.6... -
Roles of Dopaminergic D1 and D2 Receptors in Catecholamine Release from the Rat Adrenal Medulla
YoungJooBaek, YooSeongSeo, DongYoonLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 12 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2008, Vol.12 No.1 3 13-24 (12 pages)
The aim of the present study was designed to establish comparatively the inhibitory effects of D1-like and D2-like dopaminergic receptor agonists, SKF81297 and R(-)-TNPA on the release of catecholamines (CA) evoked by cholinergic stimulation and membrane depolarization from the isolated perfused model of the rat adrenal medulla. SKF81297 (30ՌM) and R-(-)-TNPA (30ՌM) perfused into an adrenal vein for 60 min, produced great inhibition in the CA secretory responses evoked by ACh... -
Influence of SKF81297 on Catecholamine Release from the Perfused Rat Adrenal Medulla
Deok-HoChoi, Jong-HeeCha, Dong-YoonLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2007, Vol.11 No.5 6 197-206 (10 pages)
The aim of the present study was to investigate the effects of 6-chloro-7,8-dihydroxy-1-phenyl-2,3, 4,5-tetrahydro-1H-3-benzazepine (SKF81297), a selective agonist of dopaminergic D1 receptor, on the secretion of catecholamines (CA) evoked by cholinergic stimulation and membrane-depolarization in the isolated perfused rat adrenal gland, and also to elucidate the mechanism involved. SKF81297 (10∼100μM) perfused into an adrenal vein for 60 min produced dose- and time-dependent inhibition of CA... -
Baicalein Protects 6-OHDA-induced Neuronal Damage by Suppressing Oxidative Stress
Heh-InIm, EunjooNam, Eun-sunLee, Yu-jinHwang, YongSikKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2006, Vol.10 No.6 3 309-316 (8 pages)
by apomorphine challenge in lesioned mice. Tyrosine hydroxylase (TH) immunohistochemistry revealed a significant loss of terminals in lesioned striatum and the reduction of the numbers of TH-positive cell in the ipsilateral substantia nigra (SN). In addition, the levels of dopamine (DA) and DA metabolites were reduced and lipid peroxidation was increased in lesioned striatum. However, baicalein treatment reduced apomorphine-induced rotational behavior in 6-OHDA-lesioned mice, and increased TH... -
R-(-)-TNPA, a Dopaminergic D2 Receptor Agonist, Inhibits Catecholamine Release from the Rat Adrenal Medulla
Soon-PyoHong, Hong-JooSeo, Dong-YoonLim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2006, Vol.10 No.5 8 273-282 (10 pages)
The aim of the present study was to investigate the effects of R-()-2,10,11-trihydroxy-N-propylnoraporphine [R-()-TNPA], a selective agonist of dopaminergic D2 receptor and S()-raclopride, a selective antagonist of dopaminergic D2 receptor, on the secretion of catecholamines (CA) evoked by cholinergic stimulation and membrane-depolarization in the isolated perfused model of the rat adrenal gland, and also to establish its mechanism of action. R-()-TNPA (10∼100μM)... -
Differential Effects of Typical and Atypical Antipsychotics on MK- 801-induced EEG Changes in Rats
JeeSookKwon, KiMinKim, SuMinChang, Choong-YoungKim, TaiHoChung, Byung-JuChoi, MaanGeeLee 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2005, Vol.9 No.1 3 17-22 (6 pages)
We examined whether the abnormal EEG state by NMDA receptor blocker MK-801 can be reversed by typical and atypical antipsychotics differentially by comparing their spectral profiles after drug treatment in rats. The spectral profiles produced by typical antipsychotics chlorpromazine (5 mg/kg, i.p.) and haloperidol (0.5 mg/kg, i.p.) were differ from that by atypical antipsychotic clozapine (5 mg/kg, i.p.) in the rats treated with or without MK-801 treatment (0.2 mg/kg, i.p.) which produce... -
Effects of Fetal Mesencephalic Cell Grafts on the Intrastriatal 6-hydroxydoapmine Lesioned Rats
WanSeokJoo, EunjooNam, Heh-InIm, JinAhJung, EunSunLee, Yu-JinHwang, YongSikKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2004, Vol.8 No.5 2 245-252 (8 pages)
by apomorphine-induced rotation. Furthermore, in substantia nigra pars compacta (SNc), the numbers of TH cells and fibers were markedly restored. Dopamine content of ipsilateral SNc was close to that of contralateral SNc (91.9⁑9.8%) in the transplanted animals, while the ratio was approximately 32% in sham-grafted animals. These results indicate that grafted cells restored the activity for the dopaminergic neurons located in SNc, although they were transplanted into striatum. In... -
Dopaminergic Inhibition of Dorsal Horn Cell Activity in the Cat
KyungChulKim, HongKeeShin, KeeSoonKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.6 2 661-670 (10 pages)
Dopamine has been generally known to exert antinociceptive action in behavioral pain test, such as tail flick and hot plate test, but there appears to be a great variance in the reports on the antinociceptive effect of dopamine depending on the dosage and route of drug administration and type of animal preparation. In the present study, the effects of dopamine on the responses of wide dynamic range (WDR) cells to mechanical, thermal and graded electrical stimuli were investigated, and the... -
Effect of Bromocriptine on 6-Hydroxydopamine-induced Lipid Peroxidation and Cytotoxicity in vitro and in vivo
YongSikKim, SunghoMaeng, ChanWoongPark 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 8 Pages
대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.5 4 565-572 (8 pages)
The present study was to evaluate the protective effects of bromocriptine, which is known as D2 dopamine receptor agonist and used for the treatment of patients with Parkinson's disease (PD), on 6-hydroxydopamine (6-OHDA)-induced neurotoxicity in vitro and in vivo. Lipid peroxidation product (malondialdehyde; MDA) produced by the administration of 6-OHDA was profoundly reduced following the treatment of bromocriptine in a dose-dependent manner in rabbit brain homogenate. Quinone formation by...
