Abstract：
:Membrane preparations of guinea-pig lung (containing multiple muscarinic receptor subtypes) and heart (containing M2 receptors only) were incubated with either neuraminidase, parainfluenza virus (which contains neuraminidase), or virus plus 2,3-dehydro-2-deoxy-N-acetylneuraminic acid, a neuraminidase inhibitor. None of these treatments affected [3H]quinuclidinyl benzilate [( 3H]QNB) binding. In the lung and heart, carbachol displaced 0.2 nM [3H]QNB from two sites. After treatment with either neuraminidase or virus the high affinity site was shifted to the right, and carbachol displaced QNB from one site with low affinity in the lung. In contrast, neuraminidase or virus decreased the affinity of carbachol for both sites in the heart. The neuraminidase inhibitor completely blocked virus-induced changes in carbachol affinity in both tissues. These results suggest that parainfluenza virus decreases the affinity of agonists for some of the muscarinic receptors in the lung, and for all of the muscarinic receptors in the heart due to its neuraminidase activity, which results in removal of sialic acid. The decreased agonist affinity in the lung may be responsible for the increased vagally induced bronchoconstriction seen in viral respiratory infections.
journal_name
Eur J Pharmacoljournal_title
European journal of pharmacologyauthors
Fryer AD,el-Fakahany EE,Jacoby DBdoi
10.1016/0014-2999(90)90244-zsubject
Has Abstractpub_date
1990-05-31 00:00:00pages
51-8issue
1-2eissn
0014-2999issn
1879-0712pii
0014-2999(90)90244-Zjournal_volume
181pub_type
杂志文章abstract：:Histamine-induced [3H]inositol monophosphate ([3H]IP1) accumulation in slices of rat cerebral cortex and guinea-pig cerebral cortex and cerebellum was inhibited in a concentration-dependent manner by Ni2+ ions. The effect of Ni2+ on the concentration-response curve for histamine in rat cerebral cortex was consistent w...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0922-4106(93)90100-n
更新日期：1993-05-15 00:00:00
abstract：:The regulation of acetylcholine (ACh) lifetime by acetylcholinesterase (AChE, EC 3.1.1.7) and butyrylcholinesterase (BuChE, EC 3.1.1.8) was evaluated in vitro in canine tracheal smooth muscle preparations. Selective inhibition of AChE by low concentrations of 1,5-bis(N-allyl-N,N-dimethyl-4-ammoniumphenyl)-pentane-3-on...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(91)90772-i
更新日期：1991-11-19 00:00:00
abstract：:gamma-Aminobutyric acid B (GABA(B)) receptor is the first discovered G protein-coupled receptor that requires two subunits, GB1 and GB2, to form a functional receptor. Whereas the molecular and functional characteristics of GABA(B) receptors have been recently extensively studied, the mechanisms underlying receptor de...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2003.09.002
更新日期：2003-11-14 00:00:00
abstract：:The action of calcitonin gene-related peptide (CGRP) on the vasodepressor response to adenosine was investigated in anesthetized rats. I.v. bolus injections of adenosine (1-100 microg/kg), acetylcholine (0.05-0.4 microg/kg), isoproterenol (1-30 ng/kg), nitroglycerin (0.3-10 microg/kg) and diltiazem (10-300 microg/kg) ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(97)01566-5
更新日期：1998-03-05 00:00:00
abstract：:The present experiments determined the effects of selective dopamine receptor antagonists on the initiation and expression of sensitization to the locomotor-stimulating effects of morphine in rats. Although both the dopamine D1 receptor antagonist R(+)-7-chloro-8-hydroxy-3-methyl-1-phenyl-2,3,4,5-tetrahydro-1H-3-benza...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(94)00779-7
更新日期：1995-03-14 00:00:00
abstract：:Adriamycin-induced nephrosis in rats is a commonly used experimental model for pharmacological studies of human chronic renal diseases. Adriamycin-induced apoptosis of renal tubular cells has been reported in adriamycin-treated rats. In addition, prostacyclin (PGI(2)) is known to have various protective effects on man...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2005.10.057
更新日期：2006-01-04 00:00:00
abstract：:We have investigated the cardiac and pressor responses to (±)-ephedrine and (-)-ephedrine in pentobarbitone anaesthetized male wistar rats. The tachycardiac responses to (±)- and (-)-ephedrine were similar, but pressor responses to (-)-ephedrine (10 mg/kg) were significantly greater than those to (±)-ephedrine, and fo...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2018.02.021
更新日期：2018-04-15 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：:There is now clinical evidence that l-sulpiride has antidepressant effects when administered at low, non-neuroleptic doses. Down-regulation of beta-receptor-linked adenylate cyclase is a well-documented adaptive response to chronic administration of antidepressant drugs. In this study, we investigated dopamine recepto...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(91)90465-3
更新日期：1991-06-25 00:00:00
abstract：:The effect of dimethyl sulfoxide (DMSO) on the slow ventral root potential, which is related to nociceptive transmission, was investigated in the isolated spinal cord of a newborn rat. DMSO at 0.3-1% (v/v) enhanced the slow ventral root potential, but not mono- and polysynaptic reflex discharges. DMSO at 1% also enhan...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(98)00313-6
更新日期：1998-06-19 00:00:00
abstract：:Oxygen free radicals have been involved in the pathophysiology of cerebral ischemia, especially after spontaneous or thrombolytic reperfusion. In this study with rats, we have combined a severe focal ischemic insult (2 h) and a prolonged reperfusion time (7 days) to assess the possible sustained neuroprotective effect...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2004.05.024
更新日期：2004-07-08 00:00:00
abstract：:Developmental changes in sensitivity of the isolated expansor sedumdariorum muscle of posthatching chicks to noradrenaline (NA), Acetylcholine (ACh) and some other drugs were investigated. This muscle responded to both NA and ACh in early life. The sensitivity to ACh decreased progressively with increasing age and dis...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(75)90135-1
更新日期：1975-08-01 00:00:00
abstract：:Our previous studies demonstrated that light-induced vascular relaxation (photorelaxation) was mediated by a tissue source of nitric oxide that was independent of endothelial nitric oxide synthase (eNOS), but sensitive to inhibitors of soluble guanylate cyclase, extracellular nitric oxide scavengers and possessed the ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2007.01.016
更新日期：2007-04-10 00:00:00
abstract：:The zebrafish (Danio rerio) has recently become a powerful animal model for cardiovascular research and drug discovery due to its ease of maintenance, genetic manipulability and ability for high-throughput screening. Recent advances in imaging techniques and generation of transgenic zebrafish have greatly facilitated ...
journal_title：European journal of pharmacology
pub_type： 杂志文章,评审
doi：10.1016/j.ejphar.2015.10.031
更新日期：2015-12-05 00:00:00
abstract：:The pH dependence of the facilitation by dopamine (10 microM), 5-hydroxytryptamine (10 microM), adenosine (1 and 100 microM), Zn2+ (10 microM) and Cd2+ (1 mM) of P2X2 purinoceptor/channels was tested by expressing these channels in Xenopus oocytes. In a pH range between 6.0 and 8.5, concentration-response curves for a...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(97)01293-4
更新日期：1997-10-22 00:00:00
abstract：:The response of convergent dorsal horn cells to tonic and phasic noxious heating and to noxious pinching was studied before and after topical application of a solution (30 nmol) of the kappa agonist U-50,488H to the dorsal surface of the spinal cord. U-50,488H depressed the discharge of convergent units evoked by ther...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(90)90453-d
更新日期：1990-09-21 00:00:00
abstract：:The present study aimed to determine whether nefiracetam, N-(2,6-dimethylphenyl)-2-(2-oxo-1-pyrrolidinyl) acetamide, a cognition enhancer, has an effect on learning and memory function in sustained cerebral ischemia, and whether the effect, if any, may accompany modification of the cholinergic or gamma-aminobutyric ac...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(02)02360-9
更新日期：2002-10-18 00:00:00
abstract：:With age an increase in prostatic smooth muscle tone mediated by α1L-adrenoceptors contributes to the lower urinary tract symptoms associated with benign prostatic hyperplasia. Current treatments for benign prostatic hyperplasia include α1-adrenoceptor antagonists which inhibit smooth muscle contraction. However, musc...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2013.09.012
更新日期：2013-12-05 00:00:00
abstract：:Multidrug resistance phenotype in mammalian cells is often correlated with overexpression of P-glycoprotein or Multidrug Resistance-Associated protein (MRP(1)). Both proteins are energy-dependent drug efflux pumps that efficiently reduce the intracellular accumulation and hence the cytotoxicity of many natural cytotox...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(00)00047-9
更新日期：2000-03-17 00:00:00
abstract：:Fat tissue plays an important role in the regulation of inflammatory processes. Increased visceral fat has been associated with a higher production of cytokines that triggers a low-grade inflammatory response, which eventually may contribute to the development of insulin resistance. In the present study, we investigat...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2008.09.047
更新日期：2008-12-03 00:00:00
abstract：:Anthracycline derivatives including 4'-epidoxorubicin are known to cause cardiovascular side effects. In this study we examined the effects of 4'-epidoxorubicin on sympathetic nerves of rat tail artery in vitro. Treatment with 4'-epidoxorubicin at concentrations higher than 10 microM gradually increased the resting te...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(98)00505-6
更新日期：1998-08-28 00:00:00
abstract：:Pretreatment of guinea pigs with 5 microgram/kg isoprenaline or 10 microgram/kg salbutamol s.c. thrice daily for 7 days reduced the responsiveness of lung slice and tracheal ring adenylate cyclase to isoprenaline, but not to prostaglandin E1. Pretreatment of guinea pigs with isoprenaline also reduced the sensitivity o...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(78)90406-5
更新日期：1978-10-01 00:00:00
abstract：:Several reports suggest that enteric cholinergic neurons are subject to a tonic inhibitory modulation, whereas few studies are available concerning the role of facilitatory pathways. Glutamate, the main excitatory neurotransmitter in the central nervous system (CNS), has recently been described as an excitatory neurot...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(03)02147-2
更新日期：2003-08-22 00:00:00
abstract：:Pulmonary hypertension is a progressive disease of various origins that is associated with right ventricular dysfunction. In the present study, the protective effect of diosgenin was investigated in monocrotaline-induced pulmonary hypertension in rats. Pulmonary hypertension was induced by a single subcutaneous inject...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2014.07.026
更新日期：2014-10-05 00:00:00
abstract：:The involvement of delta opioid receptors in supraspinal analgesia was investigated. With this aim, opioids that produced analgesia in the tail immersion test were administered i.c.v. to mice a few minutes before the irreversible antagonist, beta-funaltrexamine (beta-FNA). Protection of the respective analgesic effect...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(89)90038-1
更新日期：1989-01-02 00:00:00
abstract：:Clopidogrel is not safe enough for the gastric mucosa in patients with high risk of peptic ulcer. This study aimed to explore if clopidogrel delays gastric ulcer healing and elucidate the involved mechanisms. Gastric ulcer was induced in rats and the ulcer size, mucosal epithelial cell proliferation of the ulcer margi...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2012.07.054
更新日期：2012-11-15 00:00:00
abstract：:In rat carotid arteries isolated 2 weeks after balloon denudation, a significant neointima developed with little change in medial size. Associated with this neointimal hyperplasia was a marked decrease in contraction to various agents including angiotensins I and II, big endothelin-1, endothelin-1, norepinephrine, phe...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(94)90610-6
更新日期：1994-04-11 00:00:00
abstract：:The inhibitory effects of a hypotensive agent, cadralazine and its metabolite, ISF-2405, on the level of cytosolic Ca2+ ([Ca2+]cyt) and on contractions were examined in isolated vascular smooth muscle. Cadralazine slightly inhibited the transient norepinephrine-induced contraction in rabbit aorta and canine femoral, r...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(90)90472-i
更新日期：1990-03-20 00:00:00
abstract：:Neurodegenerative diseases are the set of progressive, age-related brain disorders, characterized by an excessive accumulation of mutant proteins in the certain regions of the brain. Such changes, collectively identified as causal factors of neurodegeneration, all impact mitochondria, imminently leading to their dysfu...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2015.12.036
更新日期：2016-02-05 00:00:00
abstract：:Closed head injury induces cerebral oxidative stress. The efficacy of a Mn (III) porphyrin catalytic antioxidant was assessed in a mouse closed head injury model. Mice were subjected to closed head injury and treated 15 min later with an i.v. bolus of vehicle or 3 mg/kg MnTE-2-PyP5+. Aconitase activity, Fluoro-Jade st...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2005.12.031
更新日期：2006-02-15 00:00:00
