Abstract：
:Adenosine relaxes the coronary arteries of various species through A2 receptors. The mechanism(s) by which adenosine causes relaxation of the coronary smooth muscle through changes in intracellular Ca levels is not understood. Therefore, the aim of this study was to evaluate the vasodilatory action of adenosine in normal and in Ca-free medium and the effect of adenosine on 45Ca efflux in Ca-free medium. Prostaglandin F2 alpha (10(-5) M) was used to induce tone in bovine coronary artery rings both in the presence and absence of Ca. Adenosine, 5'-N-ethyl-carboxamide adenosine (NECA) and N6-L-phenyl-isopropyl adenosine (L-PIA) produced concentration-dependent relaxation of the coronary artery rings when precontracted with prostaglandin F2 alpha. Both in normal and Ca-free medium, the order of potency for adenosine analogs (NECA greater than L-PIA greater than adenosine) was similar and 8-phenyltheophylline antagonized the relaxation response to adenosine and its analogs. In Ca-free medium, the concentration-response curves for adenosine and its analogs were shifted to the right, in a parallel fashion, from the curves obtained in Ca-containing solution. Removal of extracellular Ca reduced the maximum responses and slowed the rate of relaxation of adenosine and its analogs and the KB values for 8-phenyltheophylline were significantly increased. In Ca-free medium, adenosine was without an effect on 45Ca efflux in the presence of prostaglandin F2 alpha. The data suggest that the coronary vasodilatory action of adenosine has both extracellular Ca-dependent and -independent components.
journal_name
Eur J Pharmacoljournal_title
European journal of pharmacologyauthors
Ramagopal MV,Nakazawa M,Mustafa SJdoi
10.1016/0014-2999(89)90040-xsubject
Has Abstractpub_date
1989-01-02 00:00:00pages
33-40issue
1eissn
0014-2999issn
1879-0712pii
0014-2999(89)90040-Xjournal_volume
159pub_type
杂志文章abstract：:Ebselen, 2-phenyl-1,2-benzisoselenazole-3(2H)-one can preferentially inhibit the activity of inducible nitric oxide (NO) synthase with little inhibition of endothelial constitutive NO synthase within a certain concentration range. This suggests that ebselen deserves further in vivo studies to examine its possible appl...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0922-4106(94)90179-1
更新日期：1994-04-15 00:00:00
abstract：:We tested if discontinuation of cocaine self-administration can lead to the development of depressive-like symptoms in the forced swim test expressed as changes in immobility, swimming and climbing behaviors in rats. A "yoked" procedure in which rats were run simultaneously in groups of three, with two rats received t...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2009.10.049
更新日期：2010-02-10 00:00:00
abstract：:The effects of N-(aminoiminomethyl)-1, 4-dimethyl-1H-indole-2-carboxamide methanesulfonic acid (SM-20550), a novel potent Na(+)/H(+) exchanger, and nicorandil, a K(+) channel opener with nitrate-like activity, were studied in a myocardial ischemia and reperfusion injury model. Anesthetized rabbits underwent occlusion ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(00)00610-5
更新日期：2000-09-15 00:00:00
abstract：:In Ca-free solution norepinephrine (NE) produced only a phasic contraction in the media-intima layer of rabbit aorta. The second application of NE was almost ineffective. Incubation of the muscle with Ca for a short period (Ca loading) restored the ability to produce a phasic contraction in Ca-free solution. Various i...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(79)90176-6
更新日期：1979-06-15 00:00:00
abstract：:The intravenous injection of loperamide induced an immediate fall in blood pressure and heart rate in anaesthetized rats. Both effects were inhibited by the opiate antagonists naloxone and MRZ 2266 BS. Bilateral vagotomy also inhibited both effects whereas atropine only reduced the bradycardia, but the combination of ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(85)90054-8
更新日期：1985-01-02 00:00:00
abstract：:Cancer is the second leading cause of mortality worldwide. Therapeutic approach to cancer is a multi-faceted one, whereby many cellular/enzymatic pathways have been discovered as important drug targets for the treatment of cancer. A major disadvantage of most of the currently available anticancer drugs is their non-se...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2018.05.011
更新日期：2018-08-05 00:00:00
abstract：:The binding of atrial natriuretic peptide (ANP) to olfactory bulb, pituitary anterior lobe and thymus gland membranes was examined. [125I]ANP (rat, 99-126) bound specifically to the three types of membranes. However, the affinity for ANP receptor in olfactory bulb was much higher than those in either pituitary or thym...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(89)90293-8
更新日期：1989-03-21 00:00:00
abstract：:One of the best known bioactive triterpenoids is oleanolic acid, a widespread 3-hydroxy-17-carboxy oleanane-type compound. In order to determine whether further oxidation of carbon 3 affects anti-inflammatory activity in mice, different tests were carried out on oleanolic acid and its 3-oxo-analogue oleanonic acid, wh...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(01)01290-0
更新日期：2001-09-28 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：:We investigated the relaxant mechanisms of the cyclic AMP (cAMP)-increasing agents, isoproterenol, T-0509, forskolin and 3-isobutyl-1-methylxanthine (IBMX), on porcine coronary arteries contracted with U46619 (300 nM), a thromboxane A2 analogue, or 30 mM KCl, by measuring force simultaneously with intracellular Ca2+ c...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(94)90407-3
更新日期：1994-01-14 00:00:00
abstract：:Experiments were performed on 39 male albino rats anaesthetized with pentobarbitone sodium and paralyzed with gallamine triethiodide. Facial motoneurones consistently showed a progressive alteration of spike shape and decrease in spike firing frequency during the continuous microelectrophoretic application of the exci...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(77)90296-5
更新日期：1977-04-07 00:00:00
abstract：:In isolated, perfused rabbit ear artery bradykinin, like [Met5]enkephalin and angiotensin II, inhibited neurogenic constrictions in concentrations lower than 10(-8) M without affecting the responses to exogenous norepinephrine. The IC50 value of bradykinin was 1.95 x 10(-10) M. The inhibitory action of bradykinin and ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(91)90567-a
更新日期：1991-05-30 00:00:00
abstract：:[D-Ala2,Met5]enkephalinamide (DAME), [D-Ala2,Leu5]enkephalinamide (DALE) and morphine sulfate (MS) increase activity in the recurrent laryngeal nerve (RLN) within 1 s subsequent to right atrial administration. The activation of the RLN was correlated with a large increase in the resistance to airflow in the in situ is...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(82)90177-7
更新日期：1982-05-07 00:00:00
abstract：:Propentofylline is an atypical xanthine derivative that blocks adenosine uptake and has been shown to protect against ischemia-induced cerebral damage. We have studied the effect of propentofylline on recruitment of polymorphonuclear leukocytes during acute peritonitis induced by zymosan in mice. Following i.p. inject...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(96)00523-7
更新日期：1996-10-17 00:00:00
abstract：:Although carbetapentane produces skin (peripheral) infiltrative analgesia, the underlying mechanism of carbetapentane in local anesthesia is not well understood. The purpose of the study was to examine the effect of carbetapentane on voltage-gated Na(+) channels and its efficacy on spinal (central) anesthesia. We eval...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2013.07.013
更新日期：2013-08-15 00:00:00
abstract：:Fluoxetine has been shown to induce anti-tumour activity. The aim of this study was to determine the effect of fluoxetine on HCT116+/+ and p53 gene-depleted HCT116-/- human colorectal cancer cells and the mechanisms, including potential p53-dependence, of its action. Fluoxetine-induced apoptosis was investigated by mi...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2019.172441
更新日期：2019-08-15 00:00:00
abstract：:Previous results indicated that the rabbit could represent a suitable model for investigations on the functional role of alpha 2-adrenoceptors in fat cells, but the characterization of these receptors was not resolved yet. In the present report, imidazoline compounds were used to attempt a better definition of rabbit ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0922-4106(90)90010-u
更新日期：1990-04-25 00:00:00
abstract：:The Langendorff-perfused rabbit heart preparation has been used to study the interaction of isolated rabbit neutrophils with regionally ischaemic myocardium. Short durations of regional ischaemia (10-60 min) and subsequent reperfusion (30 min) of the hearts with neutrophils resulted in a significant time-dependent acc...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(92)94835-j
更新日期：1992-11-17 00:00:00
abstract：:The involvement of spinal glial cells in the nociceptive behaviors induced by 1600 pmol of histamine was determined in mice. Histamine injected intrathecally (i.t.) produced nociceptive behaviors, consisting of scratching, biting and licking. The nociceptive behaviors induced by histamine were significantly suppressed...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2010.10.096
更新日期：2011-02-25 00:00:00
abstract：:We investigated the effects of 7-nitroindazole, a specific inhibitor of neuronal nitric oxide (NO) synthase, on NO concentration and on blood flow in rat hippocampus after transient forebrain ischemia which was induced by 4-vessel occlusion for 10 min. NO concentration was measured directly by an NO-selective electrod...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(99)00555-5
更新日期：1999-09-10 00:00:00
abstract：:The interactions of sulfonylureas and a novel anti-diabetic drug, nateglinide, with rat renal organic anion transporter (rOAT1) expressed in Xenopus laevis oocytes were studied. Uptake of p-aminohippurate via rOAT1 was markedly inhibited by glibenclamide and nateglinide, and moderately by chlorpropamide and tolbutamid...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(00)00324-1
更新日期：2000-06-16 00:00:00
abstract：:5-Hydroxytryptamine (5-HT) mediates intestinal hypersecretion associated with infection and inflammation. We tested the hypothesis that 5-HT-induced anion secretion is mediated by an opioid-sensitive enteric neural circuit. 5-HT, at a contraluminal concentration of 10 microM, increased short-circuit current by 58 +/- ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(02)02249-5
更新日期：2002-09-13 00:00:00
abstract：:The effect of noradrenaline on 5-hydroxytryptamine (5-HT) release from isolated mouse ileal tissues was investigated. Noradrenaline, but not isoprenaline, at 1 microM stimulated 5-HT release, an effect which was inhibited by yohimbine, an alpha(2)-adrenoceptor antagonist, but not by bunazosin, an alpha(1)-adrenoceptor...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(01)01474-1
更新日期：2001-12-07 00:00:00
abstract：:This study assessed the effects of intracerebroventricular administration of selective agonists and antagonists for tachykinin NK1 and NK2 receptors on performance of mice in the elevated plus-maze, an ethological model of anxiety. Mice were treated with either vehicle (5 microliters) or 1, 10, 100 or 500 pmol of subs...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(96)00390-1
更新日期：1996-09-05 00:00:00
abstract：:The relaxant actions of vasoactive intestinal peptide (VIP) and bethanechol were examined on ring segments of intrapulmonary artery (IPA) isolated from cat lung. On a molar basis, VIP was 75 times more potent than bethanechol; however, VIP was less efficacious than bethanechol in reversing phenylephrine induced tone. ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(83)90039-0
更新日期：1983-09-16 00:00:00
abstract：:Increasing evidence indicates that brain inflammation is involved in the pathogenesis of neuropsychiatric diseases. Mast cells (MCs) are located perivascularly close to neurons and microglia, primarily in the leptomeninges, thalamus, hypothalamus and especially the median eminence. Corticotropin-releasing factor (CRF)...
journal_title：European journal of pharmacology
pub_type： 杂志文章,评审
doi：10.1016/j.ejphar.2015.03.086
更新日期：2016-05-05 00:00:00
abstract：:The treatment of alcohol dependence mainly consists of psychological, social, and pharmacotherapeutic interventions aiming to reduce physical withdrawal, craving, and alcohol relapse. During the last years, it has become increasingly clear that adjuvant pharmacotherapy is efficacious especially in rehabilitation progr...
journal_title：European journal of pharmacology
pub_type： 杂志文章,评审
doi：10.1016/j.ejphar.2005.09.028
更新日期：2005-12-05 00:00:00
abstract：:Inhibition of the thromboxane A2-synthesizing enzyme (DP-1904: [+/-]-6-[1-imidazolylmethyl]-5,6,7,8-tetrahydronaphthalene-2-carbo xylic acid hydrochloride hemihydrate) reportedly suppresses intercellular adhesion molecule-1 (ICAM-1) expression on the surface of stimulated vascular endothelial cells (Ishizuka et al., 1...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(96)00478-5
更新日期：1996-10-03 00:00:00
abstract：:Apoptosis or programmed cell death has been suggested as an important mode of neurodegeneration in Alzheimer's disease pathogenesis. The present study explored the neuroprotective effect of 2-ethoxy-4,5-diphenyl-1,3-oxazine-6-one (EDPOO) against H(2)O(2)-induced cell death in rat pheochromocytoma (PC12) cells. We foun...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2011.02.028
更新日期：2011-05-11 00:00:00
abstract：:Two novel 8 alpha-amino ergolines (CH 29-717 and CU 32-085) have been shown to inhibit secretion of prolactin in rats in vivo. However, when tested for dopaminomimetic potency on pituitary cell culture preparations in vitro, CH 29-717 inhibited prolactin release with an IC50 = 4 X 10(-9) M. In the same model the 1-met...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(84)90167-5
更新日期：1984-06-01 00:00:00
