Abstract:
:The ability of chemically detoxified E. coli endotoxins and membrane-active agents to modify the toxicity of native E. coli endotoxin in vivo was examined. The time- and dose-dependent increase in plasma acid phosphatase activity following toxin administration to rats provided a convenient quantitative measure of in vivo toxicity under various experimental conditions. Treatment of endotoxin with either sodium hydroxide or sodium periodate produced substances which, when injected alone, failed to cause an increase in plasma acid phosphatase activity. When given before native endotoxin, periodate-detoxified toxin produced a dose-dependent reduction in the elevation of plasma enzyme activity caused by unmodified toxin. Pretreatment with pranolium, hydrocortisone or (+)-propranolol also reduced the in vivo toxicity of endotoxin. Mortality studies in mice provided further independent support for the effectiveness of periodate-detoxified endotoxin and membrane-active drugs as endotoxin antagonists. Evidence has been found that under certain conditions gentamicin may act synergistically with bacterial endotoxins in vivo.
journal_name
Br J Pharmacoljournal_title
British journal of pharmacologyauthors
Godin DV,Tuchek JMdoi
10.1111/j.1476-5381.1983.tb11015.xsubject
Has Abstractpub_date
1983-06-01 00:00:00pages
421-8issue
2eissn
0007-1188issn
1476-5381journal_volume
79pub_type
杂志文章abstract::Mutations in the human melanocortin (MC)4 receptor have been associated with obesity, which underscores the relevance of this receptor as a drug target to treat obesity. Infusion of MC4R agonists decreases food intake, whereas inhibition of MC receptor activity by infusion of an MC receptor antagonist or with the inve...
journal_title:British journal of pharmacology
pub_type: 杂志文章,评审
doi:10.1038/sj.bjp.0706929
更新日期:2006-12-01 00:00:00
abstract::1 Morphine, Met-enkephalin, kyotorphin and D-phenylalanine have been applied by microiontophoresis to neurones in the globus pallidus and cerebral cortex of rats anaesthetized with urethane. 2 In the pallidum, most cells were inhibited by all the agonists, with a high correspondence between cells inhibited by Met-enke...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1983.tb10525.x
更新日期:1983-05-01 00:00:00
abstract::The effect of docosahexaenoic acid (DHA) on nitric oxide (NO) production and inducible NO synthase (iNOS) expression induced by interleukin (IL)-1beta, and whether the effect of DHA is related to its effect on mitogen-activated protein kinase (MAPK) activation were investigated in cultured rat vascular smooth muscle c...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1038/sj.bjp.0704768
更新日期:2002-06-01 00:00:00
abstract:BACKGROUND AND PURPOSE:The anti-cancer agent [Arg(6), D-Trp(7,9), N(me)Phe(8)]-substance P (6-11) (SP-G) modulates gastrin releasing peptide (GRP) and arginine vasopressin signalling in small cell lung cancer cells leading to growth arrest and apoptosis. We have shown that SP-G acts as a biased agonist at GRP receptors...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.2008.00003.x
更新日期:2009-01-01 00:00:00
abstract::1. The effects of a number of Ca2+ channel blockers on the transmural electrical stimulation or receptor agonist-elicited contractile responses of guinea-pig ileum were compared. 2. omega-Conotoxins (MVIIA, GVIA, SVIB and MVIIC), but not omega-agatoxin IVA, completely blocked the twitch responses evoked by low frequen...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1996.tb15470.x
更新日期:1996-06-01 00:00:00
abstract::1. Voltage-operated calcium channel (VOCC) antagonists are effective antihypertensive and antianginal agents but they also depress myocardial contractility. 2. We compared four L-type calcium channel antagonists, felodipine, nifedipine, amlodipine and verapamil and a relatively T-type selective calcium channel antagon...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1038/sj.bjp.0702045
更新日期:1998-09-01 00:00:00
abstract::1. The role of endogenous ADP in platelet aggregation in vivo remains unclear due to the lack of suitable P2T-antagonist probes. This paper describes the potency, selectivity and specificity of the novel P 2T-purinoceptor antagonist, FPL 67085 (2-propylthio-D-beta,gamma-dichloromethylene ATP) both in vitro and in the ...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1995.tb15925.x
更新日期:1995-07-01 00:00:00
abstract::1. Magnesium sulphate was studied for its effects on diarrhoea, fluid secretion, gastrointestinal transit and nitric oxide (NO) synthase activity in rats. 2. At a dose of 2 g kg-1 orally magnesium sulphate produced diarrhoea that was delayed in onset and intensity in a dose-related manner by the NO synthase inhibitor ...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1994.tb16198.x
更新日期:1994-09-01 00:00:00
abstract::Allergic inflammatory responses contribute to the symptoms of a number of diseases including atopic dermatitis, asthma and rhinitis. Cationic proteins are released from inflammatory cells and levels are known to be raised in disease states. Using an in vivo model of acute inflammation, we investigated the characterist...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1038/sj.bjp.0704172
更新日期:2001-08-01 00:00:00
abstract::1 Urocortin is a vasodilator peptide related to corticotrophin-releasing factor, which may protect endothelial function during coronary ischemia-reperfusion (I-R). The aim of this study was to study the mechanisms of this protective effect. 2 Hearts from Sprague-Dawley rats were isolated and perfused at constant flow ...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1038/sj.bjp.0706208
更新日期:2005-06-01 00:00:00
abstract::Glucagon-like peptide 1 (GLP-1) is a relatively recently discovered molecule originating in the so-called L-cells of the intestine. The peptide has insulinotrophic properties and it is this characteristic that has predominantly been investigated. This has led to the use of the GLP-1-like peptide exendin-4 (EX-4), whic...
journal_title:British journal of pharmacology
pub_type: 杂志文章,评审
doi:10.1111/j.1476-5381.2009.00486.x
更新日期:2010-02-01 00:00:00
abstract:BACKGROUND AND PURPOSE:In the sensorimotor (SM) and medial prefrontal (mPF) basal ganglia (BG) circuits, the cortical information is transferred to the substantia nigra pars reticulata (SNr) through the hyperdirect trans-subthalamic pathway and through the direct and indirect trans-striatal pathways. The cannabinoid CB...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/bph.14613
更新日期:2019-04-01 00:00:00
abstract::1. Arachidonic acid caused larger contractions to indomethacin-tested guinea-pig trachea than in control tracheae. 2. No change in contractions was obtained in tracheae treated with 5,8, 11, 14, eicosatetraynoic acid (ETYA 10 micro M). 3. ETYA (100 micro M) blocked the effect of indomethacin on arachidonic acid-induce...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1982.tb09250.x
更新日期:1982-08-01 00:00:00
abstract::1. We have examined the mechanisms of local oedema formation in the passive cutaneous anaphylactic (PCA) reaction in the rabbit. 2. IgE-containing antiserum was injected i.d. and allowed to sensitize skin sites for periods up to 240 h. Antigen (bovine gamma globulin) was injected i.d. or i.v. and local oedema formatio...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1992.tb13424.x
更新日期:1992-12-01 00:00:00
abstract::1 Both phasic and tonic responses to KCl 160 mM were reduced by Ca2+ deprivation. After 90 min, the phasic response was abolished but 13 +/- 1.5% of the tonic response remained. This resistant component was still present if the Ca2+-free solution contained EGTA 0.1 mM. The tonic response was more resistant to deprivat...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1982.tb09195.x
更新日期:1982-05-01 00:00:00
abstract:BACKGROUND AND PURPOSE:The ω-3 polyunsaturated fatty acids (PUFAs) mediate protective effects on several metabolic disorders. However, the functions of their metabolites in the early stage of nonalcoholic fatty liver disease (NAFLD) are largely unknown. EXPERIMENTAL APPROACH:Mice were fed a control diet, high-fat diet...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/bph.13844
更新日期:2017-07-01 00:00:00
abstract::1. We investigated the hypothesis that, as in some other large human arteries, 5-HT-induced contraction of the temporal artery is mediated through two co-existing receptor populations, 5-HT1-like- and 5-HT2A. Temporal arterial segments were obtained from patients undergoing brain surgery and rings prepared set up to c...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1996.tb15188.x
更新日期:1996-01-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Cerebrovascular remodelling is one of the important risk factors of stroke. The underlying mechanisms are unclear. Integrin β3 and volume-regulated ClC-3 Cl(-) channels have recently been implicated as important contributors to vascular cell proliferation. Therefore, we investigated the role of i...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/bph.12654
更新日期:2014-07-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Acute activation of κ opioid (KOP) receptors results in anticocaine-like effects, but adverse effects, such as dysphoria, aversion, sedation and depression, limit their clinical development. Salvinorin A, isolated from the plant Salvia divinorum, and its semi-synthetic analogues have been shown t...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/bph.12692
更新日期:2015-01-01 00:00:00
abstract::The prejunctional effects of clonidine and phenylephrine were studied in guinea-pig isolated atria by means of field stimulation of the sympathetic nerve terminals during the cardiac refractory period, in the presence of 1 microM atropine. Clonidine (10-100 nM) produced a dose-dependent decrease in the stimulus-inotro...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1984.tb10102.x
更新日期:1984-03-01 00:00:00
abstract::1. A pentobarbitone-anaesthetized canine model of myocardial conduction was developed to evaluate drug effects on intra-atrial (I-A), intra-ventricular (I-V) and atrioventricular (A-V) conduction parameters, both at rest and during electrical pacing of the right atrium or ventricle. Drug effects on the ability of the ...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1988.tb11444.x
更新日期:1988-02-01 00:00:00
abstract::1. Nine non-steroidal anti-inflammatory drugs were tested for antagonism of bradykinin-induced bronchoconstriction in guinea-pig lungs in vivo. Only one, benzydamine, was inactive.2. The descending order of potency of the active anti-inflammatory drugs was meclofenamate = Scha 306>Scha 87/2>indoxole>Mi85>indomethacin>...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1968.tb07952.x
更新日期:1968-09-01 00:00:00
abstract::1. This study examined the impact of allopurinol on the renal functional responses to a 30 min period of ischaemia in anaesthetized rats. 2. Immediately on reperfusion, blood pressure rose transiently, while renal blood flow remained stable throughout at control values. Glomerular filtration rate was decreased by some...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1038/sj.bjp.0702789
更新日期:1999-09-01 00:00:00
abstract::1 Because normal human blood platelets contain higher concentrations of taurine than any other amino acid, and have a platelet: plasma concentration gradient exceeding 400: 1, we isolated the cells in vitro and incubated them with radioactively labelled taurine in order to investigate the existence of a metabolically-...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1974.tb09707.x
更新日期:1974-10-01 00:00:00
abstract::1 The venom of the green mamba, Dendroaspis angusticeps, was tested for effects on neuromuscular transmission and skeletal muscle contractility in isolated phrenic nerve-hemidiaphragm preparations of the rat and mouse, chick biventer cervicis muscle preparations and in aneural cultures of embryonic chick skeletal musc...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/j.1476-5381.1979.tb08667.x
更新日期:1979-10-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Pancreatic cancer is characterized by alterations in several key signalling proteins, including increased expression and activity of the Src tyrosine kinase and focal adhesion kinase (FAK), which have been linked to its chemoresistance. Sustained Src inhibition reactivates survival pathways regul...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/bph.12855
更新日期:2015-01-01 00:00:00
abstract::1. Imidazoline binding sites have been reported to be present in the locus coeruleus (LC). To investigate the role of these sites in the control of LC neuron activity, we studied the effect of imidazolines using in vivo and in vitro single-unit extracellular recording techniques. 2. In anaesthetized rats, local (27 pm...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1038/sj.bjp.0702255
更新日期:1998-12-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Two of the most relevant unmet needs in epilepsy are represented by the development of disease-modifying drugs able to affect epileptogenesis and/or the study of related neuropsychiatric comorbidities. No systematic study has investigated the effects of chronic treatment with antipsychotics or an...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/bph.13121
更新日期:2015-06-01 00:00:00
abstract::Electrical field stimulation (EFS)-induced non-adrenergic non-cholinergic (NANC) relaxation responses in the rabbit vaginal wall were investigated. These NANC responses were partially inhibited with the nitric oxide synthase (NOS) inhibitors N(G)-nitro-L-arginine methyl ester (L-NAME; 500 microM), N(G)-nitro-L-arginin...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1038/sj.bjp.0704481
更新日期:2002-01-01 00:00:00
abstract:BACKGROUND AND PURPOSE:The chemokine receptor CXCR3 is implicated in a variety of clinically important diseases, notably rheumatoid arthritis and atherosclerosis. Consequently, antagonists of CXCR3 are of therapeutic interest. In this study, we set out to characterize binding sites of the specific low MW CXCR3 antagoni...
journal_title:British journal of pharmacology
pub_type: 杂志文章
doi:10.1111/bph.13027
更新日期:2015-04-01 00:00:00