Abstract：
:In guinea pig papillary muscle, the rate of electrical stimulation (0.1-2 Hz) strongly influenced the effects of the Anemonia sulcata toxin ATX II on action potential duration (APD) and contractile force. In the concentration range studied (10-8-10-7 M), ATX II always produced a larger prolongation in APD at low rates of stimulation. At 0.1 Hz there was a temporal dissociation between the onset of the APD-prolonging and the positive inotropic effect. However, under equilibrium conditions there was a positive relationship between the APD expressed as a fraction of the time during which the membrane was depolarized, and the contractile force irrespective of the change in experimental conditions being variation of stimulation frequency or the addition of ATX II. The results suggest that the positive inotropic effects of both ATX II and increased stimulation frequency could be induced by a similar mechanism, e.g. an increase in sodium of the heart muscle.
journal_name
Eur J Pharmacoljournal_title
European journal of pharmacologyauthors
Beress L,Ritter R,Ravens Udoi
10.1016/0014-2999(82)90632-xsubject
Has Abstractpub_date
1982-04-23 00:00:00pages
265-72issue
3-4eissn
0014-2999issn
1879-0712pii
0014-2999(82)90632-Xjournal_volume
79pub_type
杂志文章abstract：:Phenylalanine and tyrosine reportedly decrease blood pressure in conscious restrained rats. However, tyrosine has recently been found to increase blood pressure in anesthetized animals, questioning the generality of findings obtained in restrained animals. The present study therefore evaluated the effects of phenylala...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(89)90494-9
更新日期：1989-01-31 00:00:00
abstract：:Subcutaneous (s.c.) administration of compound 48/80 (3.0 mg/kg) to conscious rats produced a time-dependent long-lasting increase of plasma renin activity (PRA). A dose-related increase of the hematocrit was also observed after injection of compound 48/80. The onset of the hematocrit increase preceded that of PRA inc...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(85)90426-1
更新日期：1985-02-26 00:00:00
abstract：:The thromboxane A2/prostaglandin endoperoxide (TXA2/PGH2) receptor antagonist activity of CV-4151, a potent TXA2 synthetase inhibitor, was examined. CV-4151 inhibited guinea pig and human platelet aggregation induced by U-44069 with IC50 values of 1.2 +/- 0.3 X 10(-5) and 1.9 +/- 0.4 X 10(-5) M, respectively, and inhi...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(88)90169-0
更新日期：1988-03-15 00:00:00
abstract：:Binding of the radioligand [125I]iodoclonazepam to three different areas of rat brain (cerebellum, hippocampus and striatum) has been characterised. In all three regions binding is rapid, saturable and of high affinity (cerebellum Bmax = 1.49 +/- 0.3 pmol/mg of protein, Kd = 0.39 +/- 0.06 nM; hippocampus Bmax = 1.5 +/...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(91)90484-8
更新日期：1991-04-03 00:00:00
abstract：:After chronic exposure to neurokinin A, a time-dependent and recoverable desensitization of inositol monophosphate accumulation occurred in B82 fibroblasts transfected with cDNAs encoding for the bovine stomach NK2 receptor. Desensitized cells also showed decreased Ca2+ mobilization. While NK2 receptor antagonists had...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0922-4106(93)90172-6
更新日期：1993-03-15 00:00:00
abstract：:Dinitrosyl iron complexes (DNIC) with glutathione exert a cytotoxic effect on endometrioid tumours in rats with surgically induced experimental endometriosis. Intraperitoneal treatment of rats (Group 1) with DNIC (12.5μmoles/kg, daily, for 12 days), beginning with day 4 after the surgical operation (implantation of tw...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2014.01.002
更新日期：2014-03-15 00:00:00
abstract：:Right ventricular kitten papillary muscles were incubated with dibutyryl adenosine 3',5'-monophosphate (dbcAMP) at varying concentrations as low as 1 X 10(-4)M. A positive inotropic effect was observed with all concentrations of dbcAMP. Concomitant administration of 5 X 10(-4)M monobutyryl guanosine 3',5'-monophosphat...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(76)90280-6
更新日期：1976-03-01 00:00:00
abstract：:Acid-sensing ion channels (ASICs), a family of proton-gated cation channels, are believed to mediate pain caused by extracellular acidification. Gastrodin is a main bioactive constituent of the traditional herbal Gastrodia elata Blume, which has been widely used in Oriental countries for centuries. As an analgesic, ga...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2014.02.044
更新日期：2014-05-15 00:00:00
abstract：:Alzheimer's disease is the most common form of dementia, causing progressive cognitive dysfunction, particularly memory loss. Recently, modulation of beta-amyloid (Abeta) toxicity, one of the major potential causes of Alzheimer's disease, has emerged as a possible therapeutic approach to control the onset of Alzheimer...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2009.09.007
更新日期：2009-11-10 00:00:00
abstract：:The activation of adenosine A(2B) receptors in human mast cells causes pro-inflammatory responses such as the secretion of interleukin-8. There is evidence for an inhibitory effect of benzodiazepines on mast cell mediated symptoms in patients with systemic mast cell activation disease. Therefore, we investigated the e...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2012.12.003
更新日期：2013-01-30 00:00:00
abstract：:Skeletal myogenesis comprises myoblast replication and differentiation into striated multinucleated myotubes. Agents that interfere with myoblast replication are important tools for the understanding of myogenesis. Recently, we showed that cholesterol depletion by methyl-β-cyclodextrin (MCD) enhances the differentiati...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2012.07.035
更新日期：2012-11-05 00:00:00
abstract：:In male Swiss mice, muscimol produced myoclonic jerks. A 3 mg/kg (i.p.) dose induced this response in all of the mice tested and the peak response of 73 jerks per min was observed between 27 and 45 min. Increasing the brain serotonin levels by the administration of 5-hydroxytryptophan (80-160 mg/kg) in combination wit...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(81)90087-x
更新日期：1981-07-17 00:00:00
abstract：:Rovatirelin ([1-[-[(4S,5S)-(5-methyl-2-oxo oxazolidin-4-yl) carbonyl]-3-(thiazol-4-yl)-l-alanyl]-(2R)-2-methylpyrrolidine) is a novel synthetic agent that mimics the actions of thyrotropin-releasing hormone (TRH). The aim of this study was to investigate the electrophysiological and pharmacological effects of rovatire...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2015.05.047
更新日期：2015-08-15 00:00:00
abstract：:Coagulopathy is the major cause of organ injury as well as a strong predictor of mortality in septic patients. Systemic inflammatory response and redox imbalance are regarded as the major causes of sepsis-induced coagulopathy. There is growing evidence that a vasodilator hydralazine has beneficial effects on heart fai...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2020.173279
更新日期：2020-09-05 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：:Inhaled corticosteroids (ICS) are recommended treatments for all degrees of asthma severity and in combination with bronchodilators are indicated for COPD patients with a history of frequent exacerbations. However, the long-term side effects of glucocorticoids (GCs) may include increased risk of respiratory infections...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2020.173839
更新日期：2021-02-15 00:00:00
abstract：:Previous investigations in our laboratory revealed subsensitivity of right ventricular tissue, isolated from one month STZ-diabetic rats, to the inotropic effects of isoproterenol. The present study was concerned with the characterization of this subsensitivity phenomenon. Observations of supersensitivity to methoxami...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(87)90311-6
更新日期：1987-04-29 00:00:00
abstract：:(+/-)3,4-Methylenedioxymethamphetamine (MDMA) was administered to rats as a single 40 mg/kg injection s.c. or 40 mg/kg s.c. every second day for 4 injections. Sixteen days following the last injection rats were killed. MDMA produced significant depletions of 5-HT and its metabolite 5-HIAA in the hippocampus and the fr...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(87)90441-9
更新日期：1987-06-19 00:00:00
abstract：:Vasoactive intestinal polypeptide (VIP) and nitric oxide (NO) have been proposed as inhibitory non-adrenergic non-cholinergic (NANC) neurotransmitters in the rat gastric fundus. The smooth muscle relaxant actions of VIP and NO are medaited by cAMP and cGMP, respectively; therefore the effect of inhibitors of phosphodi...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(92)90421-y
更新日期：1992-01-21 00:00:00
abstract：:Melatonin protection against in vitro kainic acid-induced oxidative damage in rat brain is shown. Brain disrupted cell homogenates were incubated with different concentrations of kainate and with or without different concentrations of melatonin. The concentration of malonaldehyde and 4-hydroxyalkenals was measured as ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(96)00241-5
更新日期：1996-06-03 00:00:00
abstract：:The action of a novel 5-HT3 receptor antagonist, AS-5370, has been studied on two electrophysiological models for 5-HT3 receptors: whole-cell patch-clamp recordings from mouse neuroblastoma-rat glioma (NG108-15) cells and grease-gap recordings from rat isolated vagus nerve. The 5-hydroxytryptamine (5-HT)-induced fast ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(92)90591-q
更新日期：1992-08-14 00:00:00
abstract：:ICI 169,369 is a chemically novel 5-HT antagonist that has higher affinity for the 5-HT2 binding sites in rat cortex than it has for 5-HT1 sites (Ki 1.79 x 10(-8) and 1.58 x 10(-6) M, respectively). In isolated tissue preparations ICI 169,369 was shown to be a competitive antagonist of 5-HT on the rabbit aorta, pig co...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(88)90005-2
更新日期：1988-06-10 00:00:00
abstract：:We evaluated roles of kinins in allergen-induced nasal blockage and sneezing, and development of nasal hyperresponsiveness to leukotriene D4 in a Japanese cedar pollen-induced allergic rhinitis model of guinea pigs. Sensitised guinea pigs were repeatedly challenged by pollen inhalation once every week. Neither a brady...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(03)02185-x
更新日期：2003-08-29 00:00:00
abstract：:Alzheimer's disease (AD) is a chronic neurodegenerative disorder that leads to disturbances of cognitive functions. Although the primary cause of AD remains unclear, brain acetylcholine deficiency, oxidative stress and neuroinflammation may be considered the principal pathogenic factors. The present study was construc...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2013.11.008
更新日期：2014-01-15 00:00:00
abstract：:Both the gamma-aminobutyric acid (GABA) mimetic, THIP (4,5,6,7-tetrahydroisoxazolo[5,4-c]pyridin-3-ol and the serotonergic agonist, MK 212 (6-chloro-2[ 1-piperazinyl ]pyrazine) are effective analgesic agents in the mouse hot plate assay. Naltrexone, however, fails to reverse the analgesia elicited by either compound. ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(83)90235-2
更新日期：1983-06-03 00:00:00
abstract：:Clonidine and methysergide constrict the rabbit auricular artery by activating smooth muscle alpha-adrenoceptors. Clonidine inhibits and methysergide enhances responses to stimulation of the sympathetic nerves. Both drugs sensitise the artery to a variety of vasoconstrictor stimuli, although not to potassium chloride....
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(76)90264-8
更新日期：1976-03-01 00:00:00
abstract：:Opiates depress the potassium-induced efflux of [3H]noradrenaline from the mouse vas deferens in a concentration-dependent (the IC50 for normorphine was 1.5 microM), stereospecific and naloxone-reversible manner. As the concentration of sodium in the extracellular fluid was reduced, the inhibitory action of opiates wa...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(81)90354-x
更新日期：1981-04-09 00:00:00
abstract：:The effects of serotonin (5-HT) on a beta-adrenergic response were studied, using the voltage clamp technique, in Xenopus laevis oocytes surrounded by their follicular cells. noradrenaline induced marked hyperpolarization, with a specific increase in the permeability of the membrane toward K+. Application of 10 microM...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(93)90901-s
更新日期：1993-08-24 00:00:00
abstract：:The activity of a selective tachykinin NK1 receptor antagonist, PD 154075 ([(2-benzofuran)-CH2OCO]-(R)-alpha-MeTrp-(S)-NHCH(CH3) Ph), was examined in radioligand binding studies, in a [Sar9,Met(O2)11]substance P-induced foot-tapping model in the gerbil, and in cisplatin-induced acute and delayed emesis in the ferret. ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(96)00950-8
更新日期：1997-02-26 00:00:00
abstract：:Clozapine (0.625-10.0 mg kg-1 s.c.), but not the two major clozapine metabolites, N-desmethylclozapine (0.625-10.0 mg kg-1 s.c.) or clozapine-N-oxide (0.625-10.0 mg kg-1 s.c.), caused a dose-dependent decrease in core temperature in the rat. Furthermore, the clozapine-induced hypothermia (2.5 mg kg-1 s.c.) was fully a...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(96)00181-1
更新日期：1996-06-20 00:00:00
