Abstract:
:In the brain, various neurotransmitters such as noradrenaline and GABA regulate peripheral sympathetic functions. Previously, it has been reported that both β-adrenoceptor activation and GABAB receptor activation in the brain are involved in the elevation of plasma noradrenaline levels. However, it is unknown whether these pathways interact with each other. In the present study, we examined the relationship between the central actions of β-adrenoceptor activation and GABAB receptor activation with regard to plasma noradrenaline responses using urethane-anesthetized rats. Intracerebroventricular pretreatment with the GABAA receptor antagonist bicuculline did not affect the β-adrenoceptor agonist isoproterenol-induced elevation of plasma noradrenaline levels. In contrast, pretreatment with the GABAB receptor antagonist CGP 35348 suppressed the isoproterenol-induced elevation of noradrenaline levels. Intracerebroventricular pretreatment with the β-adrenoceptor antagonist propranolol did not alter the GABAB receptor agonist baclofen-induced elevation of plasma noradrenaline levels. We next examined the central effects of β-adrenoceptor activation on GABA release in the paraventricular hypothalamic nucleus (PVN), the major integrative center for sympathetic regulation in the brain. Intracerebroventricular administration of isoproterenol increased GABA content in PVN dialysates. In addition, baclofen microinjected unilaterally into the PVN resulted in elevated plasma levels of noradrenaline, but not adrenaline. Finally, unilateral blockade of GABAB receptors in the PVN suppressed the isoproterenol-induced elevation of plasma noradrenaline level. Our results suggest that activation of β-adrenoceptors in the brain, likely in the PVN, induces GABA release in the PVN, which in turn activates GABAB receptors in the PVN, leading to elevated plasma noradrenaline.
journal_name
Eur J Pharmacoljournal_title
European journal of pharmacologyauthors
Yamaguchi N,Mimura K,Okada Sdoi
10.1016/j.ejphar.2019.01.029subject
Has Abstractpub_date
2019-04-05 00:00:00pages
88-95eissn
0014-2999issn
1879-0712pii
S0014-2999(19)30046-9journal_volume
848pub_type
杂志文章abstract::The hypothesis that morphine acts on the serotonergic system to produce analgesia is based on the previous observations that (1) lesions and stimulation of midbrain raphe nuclei after the threshold to nociceptive stimuli; (2) morphine alters the turnover of serotonin (5-hydroxytryptamine; 5-HT). Microiontophoretic exp...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(78)90428-4
更新日期:1978-10-15 00:00:00
abstract::Pieces of rat brain incubated in oxygenated Tyrode solution were stimulated with the divalent cation ionophore A 23187. Incubation media were assayed for leukotriene (LT) C4-like immunoreactivity as well as for prostaglandin (PG) D2, 6-keto-PGF1 alpha and thromboxane (TX) B2 using specific and sensitive radioimmunoass...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(84)90431-x
更新日期:1984-03-16 00:00:00
abstract::To define the vasorelaxation mechanism of FK409, we examined the effect of the compound on vascular tension and cyclic nucleotide levels in isolated rat thoracic aorta contracted with norepinephrine, and on activities of guanylate cyclase and cyclic GMP phosphodiesterase prepared from rat or rabbit thoracic aorta. FK4...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0922-4106(93)90032-5
更新日期:1993-08-15 00:00:00
abstract::Transient activation of the outward K+ current caused by a rise in the cytosolic free Ca2+ concentration, [Ca2+]i was the predominant change in plasma membrane ion flux during the first phase of thyrotropin-releasing hormone (TRH) action on pituitary cells. Following the intracellular application of inhibitors of 1,2-...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0922-4106(89)90046-1
更新日期:1989-03-07 00:00:00
abstract::The present study was designed to characterize the vasopressin receptor subtype involved in the vasopressin-induced activation of the central sympatho-adrenomedullary outflow using urethane-anesthetized rats. Intracerebroventricularly (i.c.v.) administered vasopressin (0.1, 0.2 and 0.5 nmol/animal) dose-dependently el...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/s0014-2999(02)02652-3
更新日期:2002-12-13 00:00:00
abstract::Although a number of studies have shown that perivascular adipose tissue (PVAT) attenuates arterial contraction through the release of perivascular-derived relaxation factors (PVRF), the role of PVAT in modulating venous function and its mechanism(s) remained unknown. Here we examined the role of PVAT in the modulatio...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2010.12.028
更新日期:2011-04-25 00:00:00
abstract::Jolkinolide B (JB), which is isolated from the dried root of Euphorbia fischeriana Steud., has been reported to possess various therapeutic effects, such as treatment of edema and abdominal distention and protection against acute lung injury, and it has also been reported to have anti-inflammatory even antitumor prope...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2018.10.025
更新日期:2019-01-05 00:00:00
abstract::The effects of intracerebral microinjections of neurotensin and xenopsin on self-stimulation of the medial prefrontal cortex of the rat were studied. Unilateral microinjections into the medial prefrontal cortex of neurotensin at doses of 0.625, 1.25, 2.5, 5 and 10 nmol produced a dose-related decrease of self-stimulat...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(93)90681-7
更新日期:1993-01-26 00:00:00
abstract::Since the discovery of first antidepressants in mid-1950's, the field has been intensively studied. Several new classes of compounds emerged and several hypotheses on the mechanism of their action were proposed. The novel antidepressants are either selective and reversible monoamine oxidase inhibitors, (e.g., moclobem...
journal_title:European journal of pharmacology
pub_type: 杂志文章,评审
doi:10.1016/s0014-2999(00)00565-3
更新日期:2000-09-29 00:00:00
abstract::Several lines of evidence point to the association of vitamin D deficiency with the different components of metabolic syndrome. Yet, the effect of vitamin D supplementation on metabolic syndrome is not clearly elucidated. Herein, we tested the hypothesis that administration of vitamin D, either alone or in combination...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2016.10.031
更新日期:2016-12-05 00:00:00
abstract::Increasing concentrations of the functional antagonist carbachol resulted in a shift to the right of the dose-response curves for (--)-isoproterenol-induced positive chronotropic and inotropic responses and a reduction of the maximum degree of response that could be produced relative to that produced by theophylline. ...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(78)90233-9
更新日期:1978-02-01 00:00:00
abstract::While there is evidence to suggest that endothelin-1 is involved in regulation of kidney function and blood pressure, the importance of endothelin ETA receptors in this area has not been clearly defined. The novel, non-peptide endothelin ETA receptor antagonist, BMS-182874, (5-(dimethylamino)-N-(3,4- dimethyl-5-isoxaz...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(95)00537-4
更新日期:1995-12-27 00:00:00
abstract::Osteoporosis is a high mortality and morbidity ranged skeletal disease and results in high costs of medical care in the European Union. We evaluated the possible protective effect of alpha-lipoic acid (ALA) on rat bone metabolism in ovariectomy and inflammation-mediated osteoporosis models. Groups were designed as: (1...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2013.07.033
更新日期:2013-10-15 00:00:00
abstract::A possible cross-competition between vasoactive intestinal peptide (VIP) and somatostatin (somatotropin release inhibiting factor; SRIF) and their respective receptors, was investigated at native or recombinant SRIF and VIP/pituitary adenylate cyclase-activating polypeptide (PACAP) receptors. The activity of VIP was e...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/s0014-2999(01)01223-7
更新日期:2001-08-31 00:00:00
abstract::A single electroconvulsive shock produced analgesia (expressed as prolongation of hot-plate latency) in Wistar rats 45 min after the shock. The analgesic action was prevented by administration of nifedipine, 5 mg/kg i.p., 15 min before the electroconvulsive shock, while nifedipine injection after electroconvulsive sho...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(94)90363-8
更新日期:1994-03-11 00:00:00
abstract::The effects of two predominant dopamine D2-like receptor agonists, talipexole (6-allyl-2-amino-5,6,7,8-tetrahydro-4H-thiazolo [4,5-d]-azepine dihydrochloride, B-HT 920 CL2) and pramipexole (S(-)2-amino-4,5,6,7-tetrahydro-6-propyl-aminobenzothiazole dihydrochloride, SND 919 CL2Y), were studied alone and in combination ...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/s0014-2999(97)00129-5
更新日期:1997-05-01 00:00:00
abstract::Ulcerative colitis (UC), as an autoimmune disease, has been troubling human health for many years. Up to now, the available treatments remain unsatisfactory. Rhizoma Coptidis has been widely applied to treat gastrointestinal diseases in China for a long time, and coptisine (COP) is identified as one of its major activ...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2021.173912
更新日期:2021-01-25 00:00:00
abstract::The inclusion of antioxidant for the treatment of arthritis, especially under the therapy with immunosuppressant, is motivated because antioxidant plays an essential role in disease progression and moreover, immunosuppressive treatment suffers redox homeostasis balance of the organism. The aim of the present study was...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2012.11.004
更新日期:2013-01-05 00:00:00
abstract::Brefelamide is an aromatic amide isolated from Dictyostelium cellular slime molds. We found that brefelamide has a potent inhibitory growth effect measured by MTT assay in 1321N1 human astrocytoma cells. The inhibition was associated with reduced phosphorylation of extracellular signal-regulated kinase (ERK). Brefelam...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2009.06.030
更新日期:2009-08-15 00:00:00
abstract::The effects of endothelin-1 on normal and everted rabbit aorta rings and on cultured rat aortic smooth muscle cells were studied. Endothelin-1 (40 nM) contracted both normal and everted rings, and was still able to induce a prolonged contraction in Ca2(+)-free medium. Treatment of cultured cells with 100 nM endothelin...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(90)90412-y
更新日期:1990-04-10 00:00:00
abstract::Studies were designed to examine the influence of endothelin type A receptor (ETA) blockade on the hypertensive and renal response to 4 day treatment with the nitric oxide (NO) synthase inhibitor, L-nitroarginine methyl ester (L-NAME), and cyclosporine. In the first series of experiments, male Sprague-Dawley rats main...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/s0014-2999(98)00043-0
更新日期:1998-04-03 00:00:00
abstract::Cocaine is eliminated and detoxified principally through the metabolism of nonspecific plasma and tissue esterases. Microsomal oxidative metabolism is of importance in cocaine N-demethylation, this being a principal pathway of cocaine bioactivation and hepatotoxicity. The contribution of different cytochrome P450 (CYP...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0926-6917(94)90078-7
更新日期:1994-01-03 00:00:00
abstract::The high-level production of nitric oxide (NO) induced by inflammatory cytokines has been shown to play a key role in the pathogenesis of inflammation-mediated osteoporosis. In the present work, we observed that 1mM of the NO donor sodium nitroprusside (SNP) induced an increase of the cytosolic calcium concentration (...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2013.05.009
更新日期:2013-09-05 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::We recently observed that the 5-hydroxytryptamine (5-HT)(1A) receptor antagonist N-[2-[4-(2-methoxyphenyl)-1-piperazinyl]ethyl]-N-(2-pyridinyl)-cycloh exanecarboxamide (WAY 100635) enhanced antipsychotic-induced catalepsy, which we hypothesized to be due to a blockade of tonic 5-HT(1A) receptor activation. Here, we ex...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/s0014-2999(00)00178-3
更新日期:2000-04-28 00:00:00
abstract::Breast cancer comes second among the causes of cancer deaths of women. Although new generation hormone therapy is a promising strategy, re-occurrence or emergence of drug resistance limits the success. According to the theory of cancer stem cells (CSCs); CSCs are immortal, tumor inducing and self renewing pluripotent ...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2019.01.052
更新日期:2019-04-05 00:00:00
abstract::Calcitonin gene-related peptide (CGRP) is extensively distributed in primary afferent sensory nerves, including those innervating the genitourinary tract. Capsaicin can stimulate the release of CGRP from intracellular stores of these nerves, but this phenomenon has not been investigated in-depth in isolated preparatio...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2011.06.031
更新日期:2011-09-30 00:00:00
abstract::The experiments concerned the effect of parenteral administration of GM1 monosialoganglioside inner ester on the uptake of [3H]dopamine ([3H]DA) in synaptosomes prepared from the corpus striatum of rats with a unilateral lesion of the nigrostriatal pathway. In the animals treated with the ganglioside, starting on the ...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(85)90146-3
更新日期:1985-12-03 00:00:00
abstract::Myocardial pH was measured continuously with a micro pH electrode inserted into the left ventricular wall in dogs. Anterior descending coronary flow was reduced to about 1/3 of the original flow by partial occlusion of the coronary artery. Myocardial pH decreased from 7.50--7.60 to 7.06--7.24 after partial occlusion. ...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(80)90231-9
更新日期:1980-06-27 00:00:00
abstract::Mouse peritoneal inflammatory macrophages have a saturable binding site for [3H]flunitrazepam with a KD of 43 +/- 7 nM and Bmax of 391 +/- 58 fmol per 10(6) cells, which corresponds to 250 000 sites per cell. The IC50 values for PK 11195, Ro 5-4864, diazepam, flunitrazepam, clonazepam, ethyl-beta carboline 3-carboxyla...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(84)90059-1
更新日期:1984-11-27 00:00:00