Abstract:
:1. Superoxide dismutase (SOD, 60 u ml-1) or ferricytochrome c (70 microM) significantly inhibited thrombin-stimulated platelet adhesion to gelatin-coated plastic, whereas catalase (1000 u ml-1) or mannitol (1 mM) had no effect. 2. The platelet aggregation induced by low concentrations of thrombin (causing less than 45% maximal change in light transmission) was inhibited by SOD. Catalase or mannitol had no effect on platelet aggregation. 3. Pyrogallol (an O2- generator) enhanced both platelet adhesion to gelatin-coated plastic and platelet aggregation induced by thrombin; this enhancement was neutralized by SOD. 4. These results indicate that O2- increase both platelet adhesion and aggregation, whereas other free radicals such as hydrogen peroxide or hydroxyl radicals are not involved.
journal_name
Br J Pharmacoljournal_title
British journal of pharmacologyauthors
Salvemini D,de Nucci G,Sneddon JM,Vane JRdoi
10.1111/j.1476-5381.1989.tb12572.xsubject
Has Abstractpub_date
1989-08-01 00:00:00pages
1145-50issue
4eissn
0007-1188issn
1476-5381journal_volume
97pub_type
杂志文章abstract::1. Measurements were made of the in vivo formation of inositol phosphates in the brains of C57/B1/601a mice treated acutely or chronically with lithium chloride (LiCl). 2. A single injection of LiCl (10 mEquiv kg-1, s.c.) 18 h before death increased the accumulation of [3H]-inositol phosphates ([3H]-Ins P's) in the br...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1990.tb12085.x
更新日期:1990-09-01 00:00:00
abstract::1. The pharmacological features of rat white adipocyte beta-adrenoceptor subtypes were investigated by saturation and beta-agonist competition studies with [3H]-CGP 12177 and by lipolysis induced by beta-agonists as well as their inhibition by CGP 20712A (selective beta 1-antagonist) and ICI 118551 (selective beta 2-a...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1038/sj.bjp.0700885
更新日期:1997-01-01 00:00:00
abstract::1. In the zymosan rat air pouch model of inflammation we have assessed the time dependence of phospholipase A2 (PLA2) accumulation in the inflammatory exudates as well as cell migration, myeloperoxidase activity, prostaglandin E2 (PGE2) and leukotriene B4 (LTB4) levels. 2. A significant increase in PLA2 activity was d...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1996.tb15353.x
更新日期:1996-04-01 00:00:00
abstract::1. Enprostil is composed, in approximately equal proportions, of 4 allenic isomers which are prostanoids structurally related to prostaglandin E2 (PGE2). The isomers are denoted as RS-86505-007, RS-86812-007 which are in the 'natural' R and S configuration (with respect to PGE2) and RS-86505-008 and RS-86812-008 which...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1989.tb12682.x
更新日期:1989-12-01 00:00:00
abstract::Myoclonus induced by catechol in the guinea-pig is not altered by manipulation of cerebral 5-hydroxytryptamine (5-HT). The administration of catechol does not alter brain levels of 5-HT or its metabolite 5-hydroxyindole acetic acid. This form of myoclonus therefore is not of relevance to the 5-HT-sensitive post-anoxic...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1979.tb10837.x
更新日期:1979-07-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Substance P (SP) and calcitonin gene-related peptide (CGRP) released from capsaicin-sensitive sensory nerves induce local neurogenic inflammation; somatostatin exerts systemic anti-inflammatory actions presumably via sst4/sst1 receptors. This study investigates the effects of a high affinity, sst...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1038/sj.bjp.0706876
更新日期:2006-10-01 00:00:00
abstract::1. Chronic treatment with a combined ETA/ETB endothelin receptor antagonist has been shown to reduce blood pressure in experimental rat models of hypertension in which endothelin-1 gene overexpression occurs in the walls of blood vessels, particularly small, resistance-sized arteries, but not in those genetic or exper...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1038/sj.bjp.0701224
更新日期:1997-07-01 00:00:00
abstract:BACKGROUND AND PURPOSE:There is increasing evidence that potassium channels are involved in the cardiovascular dysfunction of sepsis. This evidence was obtained after the systemic inflammation, cardiovascular dysfunction and organ damage had developed. Here we have studied the consequences of early interference with po...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.2011.01324.x
更新日期:2011-07-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Suramin is a clinically prescribed drug for treatment of human African trypanosomiasis, cancer and infection. It is also a well-known pharmacological antagonist of P2 purinoceptors. Despite its clinical use and use in research, the biological actions of this molecule are still incompletely unders...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/bph.12693
更新日期:2014-07-01 00:00:00
abstract::1 The effect of phenoxybenzamine on the efflux of [3H]-noradrenaline and the mechanical response to single pulse excitation of superfused guinea-pig vas deferens was determined to examine the validity of the currently accepted hypothesis of a presynaptic negative feedback system on adrenergic nerve terminals. 2 The ad...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1979.tb13686.x
更新日期:1979-06-01 00:00:00
abstract::The effects of carboxy-PTIO and hydroxocobalamin were studied on nitrergic transmission in anococcygeus and retractor penis muscles taken during post mortem examination from young male pigs. In both muscles under resting conditions, electrical field stimulation (EFS) caused contractions that were sensitive to tetrodot...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1038/sj.bjp.0702496
更新日期:1999-05-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Inhibitory junction potentials (IJP) are responsible for smooth muscle relaxation in the gastrointestinal tract. The aim of this study was to pharmacologically characterize the neurotransmitters [nitric oxide (NO) and adenosine triphosphate (ATP)] and receptors involved at the inhibitory neuromus...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.2009.00454.x
更新日期:2009-11-01 00:00:00
abstract:BACKGROUND AND PURPOSE:GoSlo-SR compounds are efficacious BK (KCa 1.1) channel openers, but little is known about their mechanism of action or effect on bladder contractility. We examined the effects of two closely related compounds on BK currents and bladder contractions. EXPERIMENTAL APPROACH:A combination of electr...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/bph.13085
更新日期:2015-05-01 00:00:00
abstract:BACKGROUND AND PURPOSE:JNJ-Q2, a novel broad-spectrum fluoroquinolone with anti-methicillin-resistant Staphylococcus aureus activity, was evaluated in a comprehensive set of non-clinical and clinical cardiovascular safety studies. The effect of JNJ-Q2 on different cardiovascular parameters was compared with that of mox...
journal_title:British journal of pharmacology
pub_type: 杂志文章,随机对照试验
doi:10.1111/j.1476-5381.2012.01874.x
更新日期:2012-07-01 00:00:00
abstract::1 Acetylcholine-induced contractions of the isolated chronically denervated soleus muscle of the mouse consist of two phases, but both phases are equivalent to the contracture phase seen in vivo.2 Low [Ca(2+)](0) (0.5-1.5 mM) augmented peak tension, as well as the rate of relaxation, of the first phase, but inhibited ...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1977.tb07556.x
更新日期:1977-12-01 00:00:00
abstract::The cardiovascular actions of cannbinoids are complex. In general they cause vasorelaxation in isolated blood vessels, while in anaesthetised animals they cause multiphasic responses which involve an early bradycardia and long-lasting hypotension. However, in conscious animals, the picture is one of bradycardia follow...
journal_title:British journal of pharmacology
pub_type: 杂志文章,评审
doi:10.1038/sj.bjp.0705725
更新日期:2004-05-01 00:00:00
abstract::1. We studied the effects of intracerebroventricular (i.c.v.) administration of prostanoid EP receptor ligands on vagally stimulated gastric acid secretion in rats anaesthetized with urethane. 2. Administration of misoprostol (EP3/EP2 receptor agonist) and sulprostone (EP3/EP1 receptor agonist) reduced vagally mediate...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1996.tb15240.x
更新日期:1996-02-01 00:00:00
abstract::[This retracts the article on p. 3702 in vol. 171, PMID: 24758388.]. ...
journal_title:British journal of pharmacology
pub_type: 撤回出版物
doi:10.1111/bph.13264
更新日期:2015-09-01 00:00:00
abstract::1 Burimamide injected intravenously in the anaesthetized or conscious cat produced significant increases in gastric acid secretion: in the anaesthetized cat it produced increased gastric mucosal blood flow. 2 Metiamide, in doses which inhibited pentagastrin-stimulated acid secretion, produced no increase in gastric ac...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1975.tb07361.x
更新日期:1975-02-01 00:00:00
abstract::Recent evidence has indicated that the mitogen platelet-derived growth factor (PDGF) can act acutely to regulate arterial tone. In this study we demonstrate that the BB isoform of PDGF (PDGF-BB) can cause endothelium-independent relaxation of rabbit isolated mesenteric arteries. In endothelium-denuded arteries, PDGF-B...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1038/sj.bjp.0703771
更新日期:2000-12-01 00:00:00
abstract::The endoplasmic reticulum (ER) is an important intracellular membranous organelle. Previous studies have demonstrated that the ER is responsible for protein folding and trafficking, lipid synthesis and the maintenance of calcium homeostasis. Interestingly, the morphology and structure of the ER were recently found to ...
journal_title:British journal of pharmacology
pub_type: 杂志文章,评审
doi:10.1111/bph.13651
更新日期:2016-12-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Central anti-nociceptive actions of baclofen involve activation of K+ channels. Here we assessed what types of K+ channel might participate in the peripheral anti-nociception induced by baclofen. EXPERIMENTAL APPROACH:Nociceptive thresholds to mechanical stimulation in rat paws treated with intr...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1038/sj.bjp.0706898
更新日期:2006-11-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Protocatechuic acid (PCA) is plentiful in edible fruits and vegetables and is thus one anti-oxidative component of normal human diets. However, the molecular mechanisms involved in the chemopreventive activity of PCA are poorly understood. Here, we investigated the mechanism(s) underlying the ant...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.2010.01022.x
更新日期:2011-01-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Pancreatic islet transplantation is a promising therapeutic approach for Type 1 diabetes. A major prerequisite for the survival of grafted islets is a rapid revascularization after transplantation. Erythropoietin (EPO), the primary regulator of erythropoiesis, has been shown to promote angiogenes...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/bph.14925
更新日期:2020-04-01 00:00:00
abstract::1 The actions of 4-(2-hydroxy-3-isopropylaminopropoxy) phenyl acetamide (ICI 66082), a new beta-adrenoceptor blocking drug, on the twitch response of the isolated papillary muscle of the rabbit and on dP/dt max and free heart rate of a denervated dog heart preparation, are described.2 ICI 66082 (up to 1 mg/ml) did not...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1974.tb09644.x
更新日期:1974-06-01 00:00:00
abstract::1. Acute moderate hypoxia modifies the catalytic activity and expression of certain isoenzymes of hepatic cytochrome P450 (P450). The aim of this study was to document whether hypoxia affects hepatic P450 directly or through the release of serum mediators. 2. Rabbits were subjected to a FiO(2) of 8% for 48 h, sacrific...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1038/sj.bjp.0704933
更新日期:2002-11-01 00:00:00
abstract::1 Endomorphin-1 and -2 (E-1/E-2) have been proposed as endogenous ligands for the mu-opioid receptor. The aims of this study are to characterize the binding of E-1/E-2 and the subsequent effects on cyclic AMP formation and [Ca2+]i levels in SH-SY5Y and Chinese hamster ovary (CHO) cells expressing endogenous and recomb...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1038/sj.bjp.0702798
更新日期:1999-09-01 00:00:00
abstract::1. The effects of several drugs, including antagonists of vasoactive intestinal peptide (VIP), and antisera to VIP or peptide histidine isoleucine (PHI), on relaxation responses of guinea-pig isolated trachea to electrical field stimulation (EFS) have been examined. 2. beta-Adrenoceptor blockade with propranolol only ...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1989.tb11847.x
更新日期:1989-03-01 00:00:00
abstract::An investigation of the effects of gamma-aminobutyric acid (GABA) and the selective GABAB receptor agonist, baclofen, on basal and stimulated adenosine 3':5'-cyclic monophosphate (cyclic AMP) levels in slices of rat cerebral cortex has been carried out. Neither GABA nor baclofen produced any significant change in basa...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:
更新日期:1985-01-01 00:00:00
abstract::1. The effects of chlorobutanol, a widely used drug preservative, on exocrine response and intracellular Ca2+ dynamics were examined in isolated pancreatic acini of the rat. 2. Chlorobutanol (1 mg ml-1) markedly inhibited the secretory response to cholecystokinin octapeptide (CCK-8), carbamylcholine chloride (carbacho...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1993.tb13628.x
更新日期:1993-07-01 00:00:00