Abstract：
:Cardiovascular and behavioral responses induced by intravenous administration of the serotonin (5-HT)1A receptor agonist, 8-hydroxy-2-(di-n-propylamino)tetralin (8-OH-DPAT), were studied in conscious normotensive rats either after a single administration, after repeated subcutaneous treatments (1 mg/kg daily for 3 days), or after chronic intravenous infusion (200 micrograms/kg per h for 72 h). In naive rats, a single intravenous treatment with 10, 30 or 100 micrograms/kg 8-OH-DPAT produced a blood pressure reduction of approximately 10% and a heart rate reduction of 15-20%. The duration of blood pressure and heart rate reduction was dose-dependent. Behavioral responses were observed (i.e. reciprocal forepaw treading, flat body posture, hind limb abduction and headweaving), the severity and duration of which were also dose-dependent. Subcutaneous pretreatment with 8-OH-DPAT greatly reduced the behavior responses but did not alter the hypotensive or the heart rate response to a single intravenous administration of 8-OH-DPAT. Blood pressure and behavior were not monitored during the subcutaneous pretreatment period. Intravenous infusion of 8-OH-DPAT attenuated both the cardiovascular and behavioral effects to post-infusion intravenous treatment. The differential tolerance development to these responses suggests that 8-OH-DPAT may exert its blood pressure response and its behavior response through two distinct mechanisms.
journal_name
Eur J Pharmacoljournal_title
European journal of pharmacologyauthors
Kolbasa KP,McCall RB,Ludens JHdoi
10.1016/0014-2999(91)90140-lsubject
Has Abstractpub_date
1991-02-14 00:00:00pages
275-81issue
3eissn
0014-2999issn
1879-0712pii
0014-2999(91)90140-Ljournal_volume
193pub_type
杂志文章abstract：:Clinical use of gentamicin over prolonged periods is limited because of dose- and time-dependent nephrotoxicity. Primarily, lysosomal phospholipidosis, intracellular oxidative stress and heightened inflammation have been implicated. Hydrogen sulphide is an endogenously produced signal transduction molecule with strong...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2012.04.030
更新日期：2012-06-15 00:00:00
abstract：:We show that cisplatin resistance in certain lung cancer cell lines can be reversed through inhibition of mTOR (mammalian Target of Rapamycin). These cell lines appear to possess high levels of phospho-mTOR, phospho-AKT and other growth-related proteins, such as hTERT (human telomerase reverse transcriptase), and Cycl...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2008.06.028
更新日期：2008-09-04 00:00:00
abstract：:d-Lysergic acid diethylamide (LSD) produced dose-dependent contractions (EC50, 17.9 +/- 2.1 nM) on isolated ovine uterine artery of late pregnancy, which were competitively antagonized by ketanserin. The maximal contraction to LSD was 51% of the 5-HT response. LSD competitively antagonized (pA2 9.21) contractions prod...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(93)90420-m
更新日期：1993-01-05 00:00:00
abstract：:Ifoxetine (CGP 15210 G; (+/-)-bis-[cis-3-hydroxy-4-(2,3-dimethyl-phenoxy)]-piperidine sulfate) prevented the depletion of serotonin (5-HT) induced by H 75/12 and p-chloromethamphetamine in the rat brain, and that caused by endogenously released dopamine after the combined administration of haloperidol and amfonelic ac...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(86)90177-9
更新日期：1986-10-14 00:00:00
abstract：:The administration of high doses of methamphetamine causes the degeneration of striatal dopaminergic fibers in the brains of rodents, and oxidative stress appears to be one of the main factors of neurotoxicity. This study examined whether edaravone, a radical scavenger, protects against methamphetamine-induced neuroto...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2006.05.012
更新日期：2006-08-07 00:00:00
abstract：:As there are significant amounts of functional endothelin receptors in the mammalian urinary tract, we examined the effect of experimental diabetes on the expression of endothelin receptors and their mRNAs in the rat bladder dome. The density of endothelin receptors in the rat bladder dome was higher (8 and 16 weeks f...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(99)00753-0
更新日期：2000-01-17 00:00:00
abstract：:Uptake blockers and substrates are likely to recognise a common binding domain on the dopamine neuronal transporter (DAT). Among cations that form ionic gradients at the level of the cellular plasma membrane, Na+ is the only one that can stimulate their binding. The binding stimulation appears over Na+ concentrations ...
journal_title：European journal of pharmacology
pub_type： 杂志文章,评审
doi：10.1016/j.ejphar.2003.08.069
更新日期：2003-10-31 00:00:00
abstract：:Forskolin, a potent activator of adenylate cyclase, and isoprenaline, an unselective beta-adrenoceptor agonist, were studied in vitro on tissues from guinea-pig with respect to relaxation of the carbachol-contracted trachea, increase in the force of contraction of the papillary muscle and depression of subtetanic cont...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(85)90780-0
更新日期：1985-06-19 00:00:00
abstract：:Excessive proliferation of epidermal keratinocytes is a typical aspect of chronic skin diseases such as psoriasis. In the present study, the effect of phosphodiesterase 7A (PDE7A) inhibitor ASB16165 on proliferation of keratinocytes was investigated to examine the role of PDE7A in keratinocyte proliferation and the po...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2010.01.024
更新日期：2010-05-10 00:00:00
abstract：:We have studied the effects of selective and non-selective adenosine receptor agonists and antagonists in audiogenic-seizure-sensitive DBA/2 mice, an animal model of generalized reflex epilepsy. With the exception of the adenosine A3 receptor agonist, N6-(3-iodobenzyl)-5'-N-methylcarboxamidoadenosine (IB-MECA), all th...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(99)00132-6
更新日期：1999-04-29 00:00:00
abstract：:The humanized anti-CD52 antibody alemtuzumab is successfully used in the treatment of multiple sclerosis (MS) and is thought to exert most of its therapeutic action by depletion and repopulation of mainly B and T lymphocytes. Although neuroprotective effects of alemtuzumab have been suggested, direct effects of anti-C...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2020.172923
更新日期：2020-03-15 00:00:00
abstract：:The aim of the present study was to find out the mechanism by which the inflammatory mediator, bradykinin, induces an increase of the cytosolic Ca(2+) concentration ([Ca(2+)](i)) in enteric neurons. For this purpose, ganglia in the isolated submucosa from rat colon were loaded with the Ca(2+)-sensitive dye, fura-2, an...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2012.02.001
更新日期：2012-04-15 00:00:00
abstract：:Fenfluramine + phentermine was a widely used combination for weight loss. Fenfluramine and phentermine are believed to act via serotonin and catecholamines, respectively. To what extent these drugs interact has not been well-established. We compared the anorectic efficacy of a range of doses of the combination (using ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(99)00235-6
更新日期：1999-06-04 00:00:00
abstract：:CPP has a potent anticonvulsant effect against sound-induced seizures in audiogenic DBA/2 mice. Pretreatment with CPP (0.01-10 nmol i.c.v., 45 min) protects against successive phases of sound-induced seizures in a dose-dependent fashion (ED50, tonic phase, 0.023 nmol; clonic phase, 0.039 nmol; wild running, 0.17 nmol)...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(87)90501-2
更新日期：1987-07-02 00:00:00
abstract：:Polygonum tinctorium Lour. (P. tinctorium) is known to have the ability to suppress inflammation. We attempted to isolate the active compounds from P. tinctorium based on their inhibitory effects on the production of interferon-gamma, which is a well-known inflammatory cytokine. We thus isolated indirubin, an isomer o...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(00)00879-7
更新日期：2000-12-20 00:00:00
abstract：:Troxypyrrolidinium, a choline uptake inhibitor, reduced but failed to abolish responses of the rat urinary bladder to electrical stimulation at 1-100 Hz although it reduced acetylcholine output during stimulation at 10 Hz to a level similar to that of spontaneous release. Inhibition of the response to stimulation was ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(80)90131-4
更新日期：1980-02-08 00:00:00
abstract：:Most currently prescribed antidepressants act by selectively increasing the synaptic availability of serotonin or norepinephrine, or through action on both serotonin and norepinephrine. However, most therapies require several weeks of treatment before improvement of symptoms is observed and not all patients respond to...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2006.10.004
更新日期：2007-01-19 00:00:00
abstract：:Anorexia and muscle wasting are frequently observed in cancer patients and influence their clinical outcome. The better understanding of the mechanisms underlying behavioral changes and altered metabolism yielded to the development of specialized nutritional support, which enhances utilization of provided calories and...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2011.06.060
更新日期：2011-09-01 00:00:00
abstract：:Langendorff preparations of Sprague-Dawley rat hearts were perfused with calcium-free Krebs solution of pH 7.48 (control), 7.26 (acidosis) or 7.69 (alkalosis) containing either adrenaline or potassium. The responses of the force of contraction, coronary perfusion pressure and heart rate to graded doses of calcium prec...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(91)90411-i
更新日期：1991-04-10 00:00:00
abstract：:It is known that low-dose aspirin is effective in coronary artery therapy, although it has not yet been clarified how it exerts its action. Here, we report that treatment of coronary artery patients with 100 mg/day of aspirin does not attenuate thrombin generation, but reduces free thrombin by favouring the formation ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(02)02925-4
更新日期：2003-01-26 00:00:00
abstract：:The neuronal nicotinic acetylcholine receptor alpha4 and beta2 subunits expressed in heterologous expression systems assemble into at least two distinct subunit stoichiometries of alpha4beta2 receptor. The (alpha4)2(beta2)3 stoichiometry is about 100-fold more sensitive to acetylcholine than the (alpha4)3(beta2)2 stoi...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2006.03.077
更新日期：2006-06-06 00:00:00
abstract：:Rats were trained to discriminate between the stimulus properties of intraperitoneal 0.16 mg/kg apomorphine and saline in a two-lever, food-motivated operant task. Once trained, the rats were tested with the ED50 of apomorphine (0.02 mg/kg) or saline before and 1-22 days after a ten-day regimen of daily 2.0 mg/kg admi...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(81)90053-4
更新日期：1981-09-24 00:00:00
abstract：:The interaction of phencyclidine, dexoxadrol, their analogs and stereoisomers with phencyclidine receptors was compared to their ability to induce stereotyped behavior and ataxia after i.c.v. administration to rats. The order of potency for binding to phencyclidine receptors revealed that among the stereoisomers of ph...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(86)90386-9
更新日期：1986-02-11 00:00:00
abstract：:Acute administration of fluoxetine (1, 10 and 20 mg/kg i.p.) increased extracellular levels of serotonin (5-hydroxytryptamine, 5-HT) in the frontal cortex, ventral hippocampus and raphe nuclei as measured by in vivo microdialysis in anaesthetized rats. In the frontal cortex, fluoxetine showed a marked dose-response ef...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(95)00573-4
更新日期：1995-11-14 00:00:00
abstract：:[14C]Guanidinium ion influx into Na+ channel preparations from mouse and rat cerebral cortex (purified synaptosomes, and synaptoneurosomes) was characterized and its properties were compared with those for 22Na+ influx. Tetrodotoxin-sensitive influx of [14C]guanidinium ion was stimulated by aconitine, veratridine, and...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0922-4106(90)90245-s
更新日期：1990-01-23 00:00:00
abstract：:Disturbances in oxidative metabolism are involved in many acute and chronic diseases, as well as in several other conditions. The objective of the present study was to examine the relationship between the level of intracellular reactive oxygen species in the peripheral blood granulocytes of mice, as evaluated by 2',7'...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2009.11.001
更新日期：2010-02-10 00:00:00
abstract：:DSP-4 (N-(2-chloroethyl)-ethyl-2-bromobenzylamine) a novel neurotoxin which destroys central noradrenaline neurones after peripheral injection was administered to rats (50 mg/kg X 2). This procedure did not alter activity responses to quipazine (7.5 mg/kg) or apomorphine (0.2 mg/kg) but prevented their enhancement by ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(85)90593-x
更新日期：1985-09-10 00:00:00
abstract：:Growing evidence supports involvement of low-affinity/high-capacity organic cation transporters (OCTs) and plasma membrane monoamine transporter (PMAT) in regulating clearance of monoamines. Currently decynium-22 (D22) is the best pharmacological tool to study these transporters, however it does not readily discrimina...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2018.10.028
更新日期：2019-01-05 00:00:00
abstract：:The effect of adrenaline on the electrically evoked noradrenaline overflow in the portal vein of adrenal demedullated freely moving rats was studied. Adrenaline (100 ng/min) was infused for 2 h into the portal vein. After a 1-h interval when plasma adrenaline had returned to pre-infusion undetectable levels, the porta...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(93)90185-k
更新日期：1993-10-26 00:00:00
abstract：:The mechanisms of ryanodine-induced contractions were studied in strips of femoral arteries from spontaneously hypertensive rats (SHR) and normotensive Wistar-Kyoto rats (WKY). Ryanodine (30 nM to 30 microM) alone contracted arterial strips in a dose-dependent manner. The maximum contraction in SHR was about 5 times g...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(94)90383-2
更新日期：1994-03-11 00:00:00
