Abstract：
:Oxidized low density lipoproteins (oxLDL) are thought to play a major role in atherosclerosis. OxLDL act in part through alteration of intracellular signalling pathways in cells of the vascular wall. We recently reported that the EGF receptor (EGFR) signalling pathway is activated by lipid peroxidation products (among them 4-hydroxynonenal, 4-HNE) contained in oxLDL. The use of phenolic antioxidants, such as trolox, alpha-tocopherol, caffeic acid and tyrphostins A-25, A-46 or A-1478, showed that the oxLDL-induced EGFR activation is constituted by two separate components, the first (early) one being antioxidant-insensitive, the second (late) being antioxidant-sensitive. 4-HNE derivatization of EGFR and EGFR activation induced by exogenous 4-HNE, suggest that the early (0.5 - 3 h) component of oxLDL-induced EGFR activation is mediated (at least in part) by 4-HNE (and possibly by other oxidized lipids). This early component is antioxidant-insensitive. The second component (4 - 5 h) of the oxLDL-induced EGFR activation is antioxidant-sensitive, since it is blocked by antioxidants such as trolox, caffeic acid or PDTC, which act by blocking the cellular oxidative stress (H(2)O(2) generation) evoked by oxLDL. Conversely, exogenous H(2)O(2) induced EGFR autophosphorylation (thus mimicking the second component) and was also inhibited by antioxidants. This effect is mediated in part through inhibition by oxidative stress of protein tyrosine phosphatases involved in EGFR dephosphorylation.
journal_name
Br J Pharmacoljournal_title
British journal of pharmacologyauthors
Vacaresse N,Vieira O,Robbesyn F,Jürgens G,Salvayre R,Negre-Salvayre Adoi
10.1038/sj.bjp.0703981subject
Has Abstractpub_date
2001-04-01 00:00:00pages
1777-88issue
8eissn
0007-1188issn
1476-5381journal_volume
132pub_type
杂志文章abstract：:1. Inositol phospholipid hydrolysis was examined in human cerebral cortex slices by a [3H]-inositol prelabelling assay. 2. Enhancement of [3H]-inositol phosphates accumulation was observed in the presence of carbachol, noradrenaline, histamine, 5-hydroxytryptamine (5-HT) and depolarizing concentrations of KCl. 3. Desp...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1990.tb12048.x
更新日期：1990-05-01 00:00:00
abstract：:1. The relationship between the capacity of the chick biventer preparation, both intact tissue and homogenate, to inactivate acetylcholine and the ability of eserine to increase the sensitivity of the tissue to acetylcholine have been investigated.2. At concentrations of eserine of 2.69 x 10(-9)M and 2.69 x 10(-8)M th...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1971.tb07126.x
更新日期：1971-07-01 00:00:00
abstract：:The effects of 5-hydroxytryptamine (5-HT) on the release of gamma-aminobutyric acid (GABA) were examined in the longitudinal muscle-myenteric plexus (LM-MP) preparation of guinea-pig ileum. 5-HT increased the spontaneous release and inhibited the electrically-evoked release of [3H]-GABA. The 5-HT-evoked release was Ca...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1989.tb12601.x
更新日期：1989-10-01 00:00:00
abstract：:1. In the present study the effect of N-methyl-D-aspartate (NMDA) on thromboxane B2 synthesis and on [Ca2+]i was studied in human platelets. 2. NMDA (10(-7) M) completely inhibited the synthesis of thromboxane B2 from exogenous arachidonic acid (AA), while it did not interfere with the aggregating effect of the thromb...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1038/sj.bjp.0701790
更新日期：1998-05-01 00:00:00
abstract：:Tannins are a heterogeneous group of high MW, water-soluble, polyphenolic compounds, naturally present in cereals, leguminous seeds and, predominantly, in many fruits and vegetables, where they provide protection against a wide range of biotic and abiotic stressors. Tannins exert several pharmacological effects, inclu...
journal_title：British journal of pharmacology
pub_type： 杂志文章,评审
doi：10.1111/bph.13630
更新日期：2017-06-01 00:00:00
abstract：BACKGROUND AND PURPOSE:The electromechanical window (EMW), the interval between the end of the T-wave and the end of the left ventricular pressure (LVP) curve, has recently been proposed as a predictor of risk of Torsade de Pointes (TdP) in healthy animals, whereby a negative EMW (mechanical relaxation earlier than rep...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/bph.12483
更新日期：2014-02-01 00:00:00
abstract：:1 Plasma noradrenaline concentrations were similar in rats following unilateral renal arterial constriction (two kidney Goldblatt model) and in sham-operated control rats. 2 The development of hypertension was not affected by pretreatment with intracisternal injections of 6-hydroxydopamine. 3 These data suggest that s...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1977.tb08406.x
更新日期：1977-10-01 00:00:00
abstract：:1. U937 cells are a continuous line of human cells of committed monocytic origin which serve as a useful model for studying human monocytic function. The present study investigated the effect of platelet-activating factor (Paf) on intracellular free calcium ion concentration ([Ca2+]i) in U937 cells using the calcium f...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1988.tb11461.x
更新日期：1988-04-01 00:00:00
abstract：:The interaction between nitric oxide (NO) and vasoactive intestinal polypeptide (VIP) was investigated in isolated circular smooth muscle cells and strips of the guinea-pig gastric fundus. VIP induced a concentration-dependent inhibition of carbachol-induced contraction in smooth muscle cells with a maximum at 10(-6) ...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1038/sj.bjp.0703089
更新日期：2000-02-01 00:00:00
abstract：:1. The effects of a series of nine GABAB receptor antagonists of widely varying potencies on electrically stimulated release from cortical slices of [3H]-GABA in the absence or presence of 10 microM of the GABAB agonist, (-)-baclofen and of endogenous glutamate in the presence of (-)-baclofen were compared. 2. The con...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1994.tb17168.x
更新日期：1994-12-01 00:00:00
abstract：:1. The effects of adenosine A1 receptor stimulation on basal and histamine-stimulated levels of intracellular free calcium ion concentration ([Ca2+]i) have been investigated in primary astrocyte cultures derived from neonatal rat forebrains. 2. Histamine (0.1 microM-1 mM) caused rapid, concentration-dependent increase...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1995.tb15004.x
更新日期：1995-07-01 00:00:00
abstract：:1. In pithed rats, preganglionic vagal nerve stimulation (at 5 Hz) elicited a bradycardia. This bradycardia was potentiated by the angiotensin converting enzyme inhibitor, captopril (1 mg kg-1, i.v.) by about 40%. Subsequent angiotensin II infusion (0.03 micrograms kg-1 min-1) reversed this effect. A similar facilitat...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1993.tb13807.x
更新日期：1993-09-01 00:00:00
abstract：:1. The effects of some drugs known to inhibit transmission in the superior cervical ganglion and at the neuromuscular junction were investigated on the cholinergic nerve-smooth muscle junction, using the rat isolated innervated urinary bladder preparation.2. HC-3 and Win 4981 inhibited the indirectly evoked contractio...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1970.tb09900.x
更新日期：1970-08-01 00:00:00
abstract：:1. Mouse islets were used to define the characteristics and study the mechanisms of the stimulation of insulin release by compound AZ-DF 265, 4-[[N-(alpha-phenyl-2-piperidino-benzyl) carbamoyl]methyl] benzoic acid, a substituted benzoic acid with an asymmetric carbon atom. 2. At a non-stimulatory concentration of gluc...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1988.tb11405.x
更新日期：1988-01-01 00:00:00
abstract：:We studied the effects of endothelium-derived relaxing factor (EDRF), bovine retractor penis muscle inhibitory factor and sodium nitroprusside, three stimulants of guanylate cyclase, on the in vitro aggregation of washed human platelets. Platelet aggregation induced either by collagen or by the thromboxane A2 analogue...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1987.tb11221.x
更新日期：1987-04-01 00:00:00
abstract：:1. Intracellular microelectrode recording techniques were performed on mouse spinal cord and cerebral hemisphere neurones grown in primary dissociated cell culture. The effects of several anxiolytics applied by local pressure ejection on responses to gamma-aminobutyric acid (GABA) evoked by iontophoresis were investig...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1988.tb16554.x
更新日期：1988-09-01 00:00:00
abstract：BACKGROUND AND PURPOSE:Highly vascularized ovarian carcinoma secretes the putative endocannabinoid and GPR55 agonist, L-α-lysophosphatidylinositol (LPI), into the circulation. We aimed to assess the involvement of this agonist and its receptor in ovarian cancer angiogenesis. EXPERIMENTAL APPROACH:Secretion of LPI by t...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/bph.13196
更新日期：2015-08-01 00:00:00
abstract：:1. The present study investigated the central effects of the selective serotonin reuptake inhibitor (SSRI) fluoxetine and the role of 5-hydroxytryptamine(3) (5-HT(3)) receptors in the core of the nucleus accumbens (NAc) on cocaine-induced behavioural changes in rats. 2. The 5-HT(3) receptor antagonist ondansetron (1 o...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1038/sj.bjp.0703687
更新日期：2000-12-01 00:00:00
abstract：BACKGROUND AND PURPOSE:Dehydrodiconiferyl alcohol (DHCA), a lignan compound isolated from Cucurbita moschata, has previously been shown to contain anti-adipogenic and antilipogenic effects on 3T3-L1 cells and mouse embryonic fibroblasts. As some of phytochemicals derived from natural plants show anti-inflammatory or an...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/bph.13137
更新日期：2015-07-01 00:00:00
abstract：:1. The pharmacokinetic interaction between phenylbutazone and sulphadoxine has been studied in live sheep.2. Intravenous injection of phenylbutazone causes a rapid fall in the concentration of total sulphadoxine together with a simultaneous rise in the concentration of free sulphadoxine in plasma. Both processes are c...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：
更新日期：1971-10-01 00:00:00
abstract：:1. In this study, we investigated the effects of different drugs (a kappa-opioid receptor agonist U-50,488, a vasopressin receptor antagonist dPTyr(Me)AVP or an N-methyl-D-aspartate (NMDA) receptor antagonist MK-801) on the development of morphine tolerance in rat hippocampal slices. 2. Hippocampal slices (450 microm)...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1038/sj.bjp.0701646
更新日期：1998-02-01 00:00:00
abstract：:1. Alterations in the levels of intracellular calcium ([Ca2+]i) and D-myo-inositol-1,4,5-trisphosphate (InsP3) were measured in the murine neuroblastoma cell line clone, N1E-115, by use of the calcium-sensitive dye, fura-2 and a radioreceptor assay, respectively. 2. Exposure of the cells to ATP (100 microM) elicited r...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1992.tb13410.x
更新日期：1992-12-01 00:00:00
abstract：:1. It has been reported that activation of beta-adrenoceptors may be responsible for the hyperaemic response of the hepatic artery to portal venous blood flow reduction. 2. The effect of beta-adrenoceptor blockade on the hepatic arterial response to portal vein occlusion was investigated in 6 anaesthetized dogs. A sid...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1989.tb11825.x
更新日期：1989-02-01 00:00:00
abstract：:1. In order to explore whether 5-HT4 receptor subtypes exist, we have characterized further the 5-HT4 receptor that mediates tachycardia in the piglet isolated right atrium. All experiments were carried out in the presence of propranolol (400 nM) and cocaine (6 microM). We used tryptamine derivatives, substituted benz...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1993.tb13916.x
更新日期：1993-11-01 00:00:00
abstract：BACKGROUND AND PURPOSE:Calu-3 cells are derived from serous cells of human lung submucosal glands, a prime target for therapy in cystic fibrosis (CF). Calu-3 cells can be cultured to form epithelia capable of transepithelial transport of chloride. A CF Calu-3 cell is not available. EXPERIMENTAL APPROACH:A retroviral v...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1038/sj.bjp.0707175
更新日期：2007-04-01 00:00:00
abstract：:1. Cold storage (2 degrees C) treatment progressively reduced noradrenaline uptake by the taenia caecum of the guinea-pig. After 15 days of cold treatment, [(3)H]-noradrenaline uptake by tissue was reduced to about 10% of control. On the other hand, prolonged cold storage failed to decrease [(3)H]-adenosine uptake by ...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1973.tb08539.x
更新日期：1973-12-01 00:00:00
abstract：BACKGROUND AND PURPOSE:Tobacco smoke represents a relevant risk factor for coronary heart disease (CHD). Although peroxisome proliferator-activated receptor (PPAR)gamma activation reduces inflammation and atherosclerosis, expression of PPARgamma in cells and its modulation by smoking are poorly investigated. We previou...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.2009.00442.x
更新日期：2009-11-01 00:00:00
abstract：:1. The benzodiazepine site of the alpha 6 beta 2 gamma 2 subtype of gamma-aminobutyric acidA (GABAA) receptors is distinguishable from that of the alpha 1 beta 2 gamma 2 subtype by its inability to interact with classical benzodiazepines (i.e., diazepam) and its agonistic response to Ro 15-1788, which behaves as an an...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1038/sj.bjp.0700931
更新日期：1997-02-01 00:00:00
abstract：:The antioestrogen, tamoxifen, blocks volume-regulated chloride channels and reduces transparency in bovine lenses maintained in vitro. In contrast to tamoxifen, the steroidal antioestrogen, ICI 182780, did not block volume-regulated chloride currents in three cultured cell lines and required 10 fold higher concentrati...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1111/j.1476-5381.1995.tb16622.x
更新日期：1995-08-01 00:00:00
abstract：:1. Nociceptin, the endogenous ORL(1) receptor agonist inhibited the motor response to electrical-field stimulation in the rat anococcygeus muscle. This effect was characterized using the peptide ligands acetyl-Arg-Tyr-Tyr-Arg-Trp-Lys-NH(2) (Ac-RYYRWK-NH(2)), acetyl-Arg-Tyr-Tyr-Arg-Ile-Lys-NH(2) (Ac-RYYRIK-NH(2)) and [...
journal_title：British journal of pharmacology
pub_type： 杂志文章
doi：10.1038/sj.bjp.0703583
更新日期：2000-09-01 00:00:00
