Abstract:
:In superfusion experiments with a crude synaptosomal fraction from the nucleus accumbens of rats, lysergic acid diethylamide, mescaline and N,N-dimethyltryptamine (representing different chemical classes of psychotomimetics) produced a concentration-related inhibition of K+-evoked [3H]dopamine release whereas spontaneous release remained unchanged. The nonpsychotomimetic ergoline lisuride tested at the same concentration range did not modulate spontaneous or K+-evoked [3H]dopamine release. The inhibitory effects of the psychotomimetics tested were antagonized by equal concentrations of haloperidol or methiothepine. It is postulated that the effects of psychotomimetics on DA release were triggered via simultaneous action at presynaptic dopamine and 5-hydroxytryptamine receptors which are located at dopamine nerve endings in the nucleus accumbens.
journal_name
Eur J Pharmacoljournal_title
European journal of pharmacologyauthors
Hetey L,Schwitzkowsky R,Oelssner Wdoi
10.1016/0014-2999(83)90140-1subject
Has Abstractpub_date
1983-09-30 00:00:00pages
213-20issue
3-4eissn
0014-2999issn
1879-0712pii
0014-2999(83)90140-1journal_volume
93pub_type
杂志文章abstract::Choline acetyltransferase activity was measured in rats treated with daily injections of ethanol (0.1 g/kg body wt) and or dexamethasone (1 mg/kg body wt) for 5 consecutive days. Ethanol produced a biphasic reduction of choline acetyltransferase activity in rat cerebral cortex, which at most time points was further de...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(96)00601-2
更新日期:1996-10-10 00:00:00
abstract::The bisquaternary compound dequalinium has been tested for its ability to inhibit the loss of K+ which angiotensin II causes in guinea-pig hepatocytes and which occurs through apamin-sensitive Ca(2+)-activated K+ (SKCa) channels. Dequalinium blocked angiotensin II-evoked K+ loss with an IC50 of 1.5 +/- 0.1 microM and ...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(93)90590-e
更新日期:1993-05-19 00:00:00
abstract::In adult male rats, injection of TRH into a lateral ventricle of the brain 5 min prior to pentobarbital (PB) administration caused a significant dose-related inhibition of prolactin (PRL) release, in doses ranging from 500 to 5 ng. Among 8 TRH analogues devoid of thyrotropin-releasing activity, 6 were found to signifi...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(77)90276-x
更新日期:1977-10-15 00:00:00
abstract::Observations of sigma (sigma) receptor heterogeneity have prompted interest in identifying ligands for sigma receptor subtypes. Selective ligands for the sigma-2 are unavailable, but [3H]ifenprodil labels sigma-2 sites. Therefore, isomers and analogues of ifenprodil were compared as potential sigma-2 ligands. Threo-if...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(94)00763-w
更新日期:1995-02-06 00:00:00
abstract::Blood pressure responses to intrathecal (i.t.) injection of neurochemicals were examined in the fructose-fed rat, an experimental model of metabolic syndrome.Sprague-Dawley rats receiving either tap water or water containing 10% fructose during 8 weeks were anesthetized with sodium pentobarbital. The endocannabinoid a...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2013.02.037
更新日期:2013-04-15 00:00:00
abstract::We have recently demonstrated that hyperthermia induced by 1-(2,5-dimethoxy-4-iodophenyl)-2-aminopropane (DOI) and m-chlorophenylpiperazine (m-CPP) are separately mediated by selective stimulation of 5-HT2A and 5-HT2C receptors, respectively in Wistar rats. Furthermore, hyperthermia induced by either DOI or m-CPP was ...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(95)00279-t
更新日期:1995-08-25 00:00:00
abstract::The anxiogenic activity of N-methyl-beta-carboline-3-carboxamide (FG 7142) is sometimes difficult to observe in rats. As the open field has recently been applied successfully to test the anxiogenic potential of n-butyl-beta-carboline-3-carboxylate (beta-CCB) in mice, a comparable experiment was performed with FG 7142 ...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(91)90685-j
更新日期:1991-07-23 00:00:00
abstract::This study compares the antimitogenic effects of iloprost and prostaglandin E1 on platelet-derived growth factor-BB stimulated DNA synthesis ([3H]thymidine incorporation) in bovine coronary artery smooth muscle cells. When added 20-24 h after stimulation with platelet-derived growth factor-BB (20 ng/ml), both iloprost...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/s0014-2999(98)00022-3
更新日期:1998-03-19 00:00:00
abstract::We previously reported the synthesis of three new opioid agonists as well as their in vitro and in vivo activity [Girón, R., Abalo, R., Goicoechea, C., Martín, M.I., Callado, L.F., Cano, C., Goya, P., Jagerovic, N. 2002. Synthesis and opioid activity of new fentanyl analogs. Life Sci. 71, 1023-1034]. One of them, N-[1...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2008.07.052
更新日期:2008-10-24 00:00:00
abstract::Kinins are known to be potent releasers of histamine. In the present study, the B2 antagonist analogues of bradykinin (BK) and kallidin (KD): [( Thi6,9,D-Phe8]KD, [Thi5,8,D-Phe7]BK) were also found to be potent releasers of histamine from rat mast cells and not to exert any antagonistic effect. Similarly, two B1 recep...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(88)90051-9
更新日期:1988-04-27 00:00:00
abstract::We have previously proposed that pro-inflammatory cytokines and nitric oxide (NO) contributed to reversible myocardial depression in patients with sepsis and congestive heart failure. Sepsis and heart failure are also associated with refractoriness to beta-adrenoceptor agonists. Therefore, the chronotropic effects of ...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/s0014-2999(96)00912-0
更新日期:1997-02-12 00:00:00
abstract::We have investigated the possible mechanisms underlying the antihyperglycaemic effect of the imidazoline derivative S-22068. In vitro, in the presence of 5 mmol/l glucose, S-22068 (100 micromol/l) induced a significant and sustained increase in insulin secretion from isolated, perifused, rat islets and a marked sensit...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/s0014-2999(99)00395-7
更新日期:1999-07-14 00:00:00
abstract::The pharmacological profiles of tachykinin receptors mediating the release of acetylcholine were examined in the isolated spinal cord of the neonatal rat. The acetylcholine release evoked by neurokinin A or acetyl-[Arg6,Pro9]substance P-(6-11) was depressed by the tachykinin antagonists, spantide and GR71251 at 10 mic...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(93)90939-f
更新日期:1993-09-07 00:00:00
abstract::Acute (-)-nicotine administration (0.4 and 0.8 mg/kg s.c.) produced a regionally specific increase in the rate of catecholamine synthesis in the rat nucleus accumbens, hypothalamus and hippocampus but not elsewhere, including the caudate-putamen. In all regions rates of 5-hydroxytryptamine synthesis were unaffected. (...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(89)90440-8
更新日期:1989-08-29 00:00:00
abstract::The functional characteristics of purinoceptors in Chinese hamster ovary (CHO) cells were investigated using a microphysiometer which detects small metabolic changes to living cells in real-time as variations of pH in the extracellular microenvironment. Uridine 5'-triphosphate (UTP) increased the extracellular acidifi...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/s0014-2999(02)02556-6
更新日期:2002-11-22 00:00:00
abstract::As calcium (Ca2+) channel blockers are effective against the vasoconstrictor responses to 5-hydroxytryptamine (5-HT) in vitro, and a favourable response is claimed for these drugs in migraine prophylaxis, we studied the interaction between nimodipine or nifedipine, and 5-HT for effects on carotid haemodynamics in the ...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(87)90773-4
更新日期:1987-04-07 00:00:00
abstract::Liver failure altered P-glycoprotein (P-gp) function and expression at blood-brain barrier (BBB), partly owing to hyperammonemia. We aimed to examine the effects of partial portal vein ligation (PVL) plus chronic hyperammonemia (CHA) on P-gp function and expression at rat BBB. Experimental rats included sham-operation...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2019.01.005
更新日期:2019-03-05 00:00:00
abstract::The actions of dequalinium have been investigated in cultured rat sympathetic neurones. It produced a rapid and reversible inhibition of the slow apamin-sensitive component of the afterhyperpolarization (AHP) which follows a single action potential in these cells. The IC50 for this effect was 1.1 microM and in voltage...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(94)90596-7
更新日期:1994-02-03 00:00:00
abstract::In vitro studies have provided evidence that Cl(-) ion currents are important for activation of vascular smooth muscle contraction. The stilbene, 4,4'-diisothiocyanatostilbene-2,2'-disulfonic acid (DIDS), disrupts Cl(-) metabolism by blocking Cl(-) channels and by inhibiting Cl(-) bicarbonate exchange. The aims of thi...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/s0014-2999(00)00471-4
更新日期:2000-08-11 00:00:00
abstract::Given the differences in the dopamine neurotransmission between the shell and the core of the nucleus accumbens, as well as the differential involvement of these two domains in oral behaviour of rats, it was decided to determine whether or not dopamine D1 and/or dopamine D2 receptors differentially direct oral behavio...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(95)00428-n
更新日期:1995-11-03 00:00:00
abstract::Toluene diisocyanate (TDI)-induced asthma is a frequent occupational airway disease. To determine whether a calibrated dosage of oral slow-release theophylline inhibits asthmatic reactions and the associated increase of airway responsiveness to methacholine induced by TDI, we examined six asthmatic subjects who develo...
journal_title:European journal of pharmacology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/0926-6917(92)90010-a
更新日期:1992-05-01 00:00:00
abstract::Chronic administration of amphetamine to cats (twice daily, in doses increasing from 5 to 15 mg/kg over a 10-day period) elicited a number of behaviors e.g., limb flicking, abortive grooming, and excessive head shaking, which were originally proposed as an animal behavioral model for studying the actions of hallucinog...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(84)90138-9
更新日期:1984-04-06 00:00:00
abstract::Unlike classical antipsychotic drugs, clozapine activates the hypothalamo-pituitary-adrenal axis and induces a specific regional pattern of Fos-protein expression in the rat forebrain. Whether corticosterone plays a role in the clozapine-induced Fos response is the subject of this study. Some rats were adrenalectomize...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/s0014-2999(01)00870-6
更新日期:2001-04-06 00:00:00
abstract::Pregabalin, a ligand of alpha(2)delta subunits of voltage-gated calcium channels, reduces visceral hypersensitivity associated with irritable bowel syndrome. However, effects of pregabalin on bowel function are not well described. We investigated the effects of pregabalin on bowel dysfunction and colonic nociceptive t...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2010.06.014
更新日期:2010-09-15 00:00:00
abstract::BAY 41-2272 is a heme-dependent nitric oxide-independent soluble guanylate cyclase (sGC) stimulator, but its relaxant effect in vascular, respiratory and urogenital tissue is only partially dependent on sGC activation. As its mechanism of action has not been studied in the gastrointestinal tract, it was investigated i...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2012.04.049
更新日期:2012-07-05 00:00:00
abstract::Swallowing is a patterned motor activity generated by neurons located within the nucleus tractus solitarii (NTS). Previous experiments have shown that administration of excitatory amino acids within the NTS induces swallowing. The present study was undertaken to identify the receptor subtypes involved in this effect. ...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(91)90323-i
更新日期:1991-08-16 00:00:00
abstract::Renal mesangial cells exposed to inflammatory cytokines produce high concentrations of nitric oxide (NO) which may exert cytotoxic actions. We report here that glomerular mesangial cells, endothelial cells and epithelial cells in culture are themselves targets for NO and undergo apoptotic cell death upon exposure to h...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/s0014-2999(96)00701-7
更新日期:1996-12-12 00:00:00
abstract::The present study was an attempt to answer the question whether the local anesthetic [3H]tetracaine labels sodium channels in mouse brain synaptosomes. Binding of [3H]tetracaine had a Kd of 0.19 microM and a Bmax ranging from 3.7 to 5.2 pmol/mg of protein. Local anesthetics other than tetracaine and cocaine-related co...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(87)90530-9
更新日期:1987-11-10 00:00:00
abstract::The therapeutic potential of cannabidiol, the major non-psychotropic Cannabis constituent, was investigated in rats exposed to ischemia/reperfusion liver injury. Ischemia was induced by clamping the pedicle of the left hepatic lobe for 30 min, and cannabidiol (5mg/kg, i.v.) was given 1h following the procedure and eve...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2011.08.048
更新日期:2011-11-16 00:00:00
abstract::The onset of a therapeutic response to antidepressant treatment exhibits a delay of several weeks. The present study was designed to know whether extracellular serotonin (5-HT) levels need to be increased in territories of 5-HT innervation in order to obtain beneficial effects from a chronic treatment with a serotonin...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2009.11.037
更新日期:2010-02-25 00:00:00