Abstract：
:In previous studies using Fos expression as a marker of neuronal activation, we showed that nitrous oxide (N(2)O) activates bulbospinal noradrenergic neurons in rats and that destruction of these neuronal pathways leads to loss of N(2)O antinociceptive action. Based on previous rat studies it has been proposed that these noradrenergic neurons are activated through opioid receptors through the release of endogenous opioid ligands in the periaqueductal gray. Using mice with a disrupted preproenkephalin gene (Penk2 -/-) and the opioid receptor antagonist naltrexone, we investigated the role of enkephalinergic mechanisms and opioid receptor activation in the behavioral and bulbospinal neuron responses to N(2)O in mice. The antinociceptive response to N(2)O was investigated using the tail-flick, hot-plate, and von Frey assays, the sedative/hypnotic response was measured using rotarod and loss of righting reflex, and bulbospinal neuronal activation was assessed with pontine Fos immunostaining. No differences were observed between wild-type and Penk2 -/- mice for the antinociceptive, sedative/hypnotic, and pontine neuronal activation effects of N(2)O. Similarly, naltrexone did not block N(2)O-induced antinociception, sedation, or hypnosis. We conclude that neither enkephalin nor opioid receptors participate in either the antinociceptive or the sedative/hypnotic actions of N(2)O in mice.
journal_name
Eur J Pharmacoljournal_title
European journal of pharmacologyauthors
Kingery WS,Sawamura S,Agashe GS,Davies MF,Clark JD,Zimmer Adoi
10.1016/s0014-2999(01)01193-1keywords:
subject
Has Abstractpub_date
2001-09-07 00:00:00pages
27-35issue
1eissn
0014-2999issn
1879-0712pii
S0014-2999(01)01193-1journal_volume
427pub_type
杂志文章abstract：:18-Methoxycoronaridine, a novel iboga alkaloid congener that decreases drug self-administration in several animal models, may be a potential treatment for multiple forms of drug abuse. In previous work, 18-methoxycoronaridine was found to be a somewhat selective antagonist at alpha3beta4 nicotinic receptors; and low d...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(02)01944-1
更新日期：2002-07-19 00:00:00
abstract：:In isolated rabbit aortae, imidazole (10(-4)M) caused a unique nonspecific potentiation of the contractile responses to prostaglandins, norepinephrine, 5-hydroxytryptamine, histamine and potassium only at low concentrations. Imidazole had no effect on the dose-response relationship for Ca2+ in the presence of potassiu...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(82)90255-2
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abstract：:The interaction of etamicastat, a novel peripherally acting dopamine-β-hydroxylase (DBH) inhibitor, with the enzyme was studied using a classical kinetic approach and the pharmacodynamics effect of the compound upon administration to rats was also evaluated. SK-N-SH cell homogenates convert tyramine into octopamine wi...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2015.01.034
更新日期：2015-03-15 00:00:00
abstract：:To evaluate the possible role of 5-HT 1A and 5-HT 2A receptors in the anticonvulsant effect of swim stress, mice were pre-treated with agonists and antagonists of these receptors prior to exposure to stress and the intravenous infusion of picrotoxin. 8-OH-DPAT ((+/-)-8-hydroxy-2-(di-n-propylamino) tetralin) and WAY-10...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2005.10.021
更新日期：2005-12-19 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(91)90375-z
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2004.03.057
更新日期：2004-05-10 00:00:00
abstract：:We have investigated the role of tyrosine kinase in the antiarrhythmic effects of peroxynitrite preconditioning in rat isolated heart by using a tyrosine phosphatase inhibitor, sodium orthovanadate, and tyrosine kinase inhibitors, genistein and tyrphostin. Rat hearts were preconditioned by peroxynitrite administration...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(03)01377-3
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abstract：:Honokiol and magnolol, two major phenolic constituents of Magnolia sp., have been known to exhibit antibacterial activities. However, until now, their antibacterial activity against Propionibacterium sp. has not been reported. To this end, the antibacterial activities of honokiol and magnolol were detected using the d...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2004.05.047
更新日期：2004-08-02 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2016.03.041
更新日期：2016-06-05 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(84)90617-4
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(99)00517-8
更新日期：1999-09-03 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(98)00197-6
更新日期：1998-05-22 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(95)00009-a
更新日期：1995-03-24 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章,评审
doi：10.1016/j.ejphar.2015.04.017
更新日期：2015-08-05 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2017.12.007
更新日期：2018-01-15 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(79)90421-7
更新日期：1979-02-15 00:00:00
abstract：:The binding of [3H]LSD to serotonergic sites in human brain was studied. The pharmacological profile of [3H]LSD binding in frontal cortex differed to that in hippocampus. Analysis of the inhibition of [3H]LSD binding by serotonin and spiperone was consistent with the presence of two binding sites, which differed in ph...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(82)90555-6
更新日期：1982-08-13 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(88)90559-6
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(81)90185-0
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(97)01281-8
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abstract：:Ro5-4864, diazepam and chlordiazepoxide inhibited the concanavalin A-induced [14C]serotonin release from rat mast cells dose dependently with IC30 values 38, 115 and 160 microM, respectively. They also inhibited concanavalin A-induced 45Ca uptake, with IC50 values 180, 860 and 1800 microM, respectively. Clonazepam sli...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(89)90749-8
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/0014-2999(90)90566-o
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abstract：:Behavioral interactions between ethanol and GABA-mimetic and GABA antagonist drugs were evaluated by duration of narcosis and motor incoordination (inhibition of bar holding) in mice. Aminooxyacetic acid (AOAA), baclofen, and tetrahydroisoxazolopyridineol (THIP) (GABA mimetics) lengthened ethanol narcosis, while picro...
journal_title：European journal of pharmacology
pub_type： 杂志文章
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journal_title：European journal of pharmacology
pub_type： 杂志文章
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更新日期：2012-09-15 00:00:00
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journal_title：European journal of pharmacology
pub_type： 杂志文章
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journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2010.08.017
更新日期：2010-12-01 00:00:00
abstract：:Identification of natural products that have antitumor activity is invaluable to the chemoprevention and therapy of cancer. The embryos of lotus (Nelumbo nucifera) seeds are consumed in beverage in some parts of the world for their presumed health-benefiting effects. In this report we studied the effects of neferine, ...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2011.12.035
更新日期：2012-02-29 00:00:00
abstract：:The mechanisms underlying the capsaicin-induced relaxation of the acetylcholine- as well as KCl-contraction were studied by measuring isometric force and phosphorylation of 20-kDa regulatory light chain subunit of myosin (MLC(20)) in ileal longitudinal smooth muscles of rats. Capsaicin relaxed acetylcholine- and KCl-s...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2004.01.014
更新日期：2004-03-08 00:00:00
abstract：:Nanomolar concentrations of atropine have been considered up to now to be selective for blockade of muscarinic receptors for acetylcholine. A collateral finding indicated to us that these low concentrations of atropine could also target the neuronal nicotinic receptors. We report here a detailed study on this novel pr...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/j.ejphar.2006.01.057
更新日期：2006-03-27 00:00:00
abstract：:The effects of four fluoroquinolones (sparfloxacin, fleroxacin, ofloxacin and levofloxacin) on K(+) currents were investigated in pyramidal neurons acutely isolated from rat hippocampus, to evaluate their relative potencies for inhibiting these channels. Using patch-clamp electrophysiological techniques, we found that...
journal_title：European journal of pharmacology
pub_type： 杂志文章
doi：10.1016/s0014-2999(03)01316-5
更新日期：2003-02-21 00:00:00
