Abstract:
:Dermenkephalin (Tyr-D-Met-Phe-His-Leu-Met-AspNH2) is a highly potent and selective delta-opioid peptide isolated from frog skin. It was recently recognized that the C-terminus His4-Leu5-Met6-Asp7NH2 of dermenkephalin was responsible for the addressing of the peptide towards the delta-opioid receptor. In order to investigate the role played by residues 4, 5 and 6 in this 'delta address', we synthesized and evaluated 20 new analogues for their ability to displace tritiated ligands from mu- and delta-opioid sites. Results showed that position 4 of dermenkephalin contributes to delta selectivity independently of delta-opioid receptor binding by preventing a high affinity mu binding. Position 5 requires a hydrophobic side chain to enhance delta affinity. A high delta affinity was obtained with any amino acids introduced in position 6 suggesting that residue 6 serves as a neutral spacer. Thus, the main features responsible for the high delta-opioid selectivity of dermenkephalin are electrostatic repulsions with the mu-opioid receptor, additional hydrophobic interactions with the delta-opioid receptor and folding of the C-terminal domain.
journal_name
Eur J Pharmacoljournal_title
European journal of pharmacologyauthors
Charpentier S,Sagan S,Naim M,Delfour A,Nicolas Pdoi
10.1016/0922-4106(94)90107-4subject
Has Abstractpub_date
1994-01-15 00:00:00pages
175-80issue
2eissn
0014-2999issn
1879-0712journal_volume
266pub_type
杂志文章abstract::The distribution of P2-purinoceptors in pre-capillary resistance vessels was studied in vitro, using Krebs perfused rabbit ears and in vivo, in autoperfused hindquarters, intestinal and renal vasculatures of pentobarbitone anaesthetised cats. ATP (10(-10)-10(-6) mol i.a.) caused dose-dependent vasodilatation which, in...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(89)90834-0
更新日期:1989-02-28 00:00:00
abstract::The effect of progesterone on isolated rabbit coronary arteries and its possible mechanism was investigated by measuring changes of isometric tension. Progesterone (1, 3, 10 and 30 microM) induced significant coronary relaxation in K+ (30 mM)-, prostaglandin F2 alpha (3 microM)- or Bay K 8644 (1 microM plus 15 mM K+)-...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(92)90524-8
更新日期:1992-02-11 00:00:00
abstract::Depression is very common in asthmatic patients and may increases risk for morbidity and mortality. The present work aimed to investigate the protective effect of fluoxetine, on behavioral and biochemical changes, associated with ovalbumin (OVA) - induced bronchial asthma and depression in rats. Rats were sensitized w...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2018.08.026
更新日期:2018-10-15 00:00:00
abstract::(+/-)3,4-Methylenedioxymethamphetamine (MDMA) was administered to rats as a single 40 mg/kg injection s.c. or 40 mg/kg s.c. every second day for 4 injections. Sixteen days following the last injection rats were killed. MDMA produced significant depletions of 5-HT and its metabolite 5-HIAA in the hippocampus and the fr...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(87)90441-9
更新日期:1987-06-19 00:00:00
abstract::Slices of rat kidney cortex were incubated in [3H]noradrenaline, then placed in a flow cell and subjected to electrical field stimulation. At a stimulation frequency of 5 Hz, both the alpha 2-adrenoceptor antagonist idazoxan (0.1 microM) and the alpha 1-adrenoceptor antagonist prazosin (0.1 microM) significantly enhan...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(89)90026-5
更新日期:1989-10-10 00:00:00
abstract::The effects of a thrombin active-site inhibitor on arterial and venous thrombosis, and thrombin-induced thrombocytopenia were determined in anesthetized rats. Desamino D-Phe-Pro-Arg-aldehyde (BMY 44621) was administered before experimental intervention as a loading i.v. dose plus continuous i.v. infusion. Carotid arte...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(94)90506-1
更新日期:1994-07-01 00:00:00
abstract::The functions of the 5-HT(4) receptor in the gastrointestinal tract are complex, depending on the species and anatomical regions, and localization of the receptor was not clear. The present study attempted to examine the localization of the 5-HT(4) receptor in the colon of human for comparison with that in guinea pig ...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/s0014-2999(99)00642-1
更新日期:1999-11-03 00:00:00
abstract::Recent studies have suggested that hydrogen sulfide (H2S), an important endogenous signaling gaseous molecule, participates in relaxation of smooth muscle. Nevertheless, the mechanism of this relaxation effect on respiratory system is still unclear. The present study aims to investigate the physiological function as w...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2014.07.004
更新日期:2014-10-15 00:00:00
abstract::In recent years, the pilocarpine model of temporal lobe epilepsy has become the most popular and widely used rodent model of this common and difficult-to-treat type of epilepsy. In this model, the cholinomimetic convulsant pilocarpine is used to induce a status epilepticus, which is followed by hippocampal damage and ...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2009.07.020
更新日期:2009-10-01 00:00:00
abstract::Hydrogen sulfide (H2S) is a gaseous molecule and is endogenously produced in the brain by cystathionine beta-synthase, 3-mercaptopyruvate-sulfurtransferase, cysteine aminotransferase and cystathionine γ-lyase. Physiologically, H2S acts as a neuromodulator and regulates synaptic activity of neurons and glia to promote ...
journal_title:European journal of pharmacology
pub_type: 杂志文章,评审
doi:10.1016/j.ejphar.2019.01.072
更新日期:2019-04-15 00:00:00
abstract::The effect of furosemide on carbohydrate metabolism was studied in ob/ob mice. Intraperitoneal injection of a single dose of furosemide (200 mg/kg body weight) into fasted mice resulted in acute hyperglycaemia and two days after such a single dose, the mice showed fasting hyperglycaemia and glucose intolerance. Pancre...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(88)90175-6
更新日期:1988-03-15 00:00:00
abstract::In cardiac muscle cells both T-and L-type Ca(2+) channels (TTCCs and LTCCs, respectively) are expressed, and the latter are relevant to a process known as excitation-contraction coupling (ECC). Evidence obtained from docking studies suggests that isoindolines derived from α-amino acids bind to the LTCC CaV1.2. In the ...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2016.04.027
更新日期:2016-06-15 00:00:00
abstract::WIN 64338 (phosphonium, [[4-[[2-[[bis(cyclohexylamino) methylene] amino]-3-(2-naphthalenyl) 1-oxopropyl]amino]-phenyl]- tributyl, chloride, monohydrochloride) is the first potent nonpeptide competitive bradykinin B2 receptor antagonist as shown in classical pharmacological preparations with no activity in the rabbit a...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0922-4106(94)90017-5
更新日期:1994-12-15 00:00:00
abstract::Increased O-Linked β-N-acetylglucosamine (O-GlcNAc) is observed in several pathologies, and unbalanced O-GlcNAcylation levels favor endothelial dysfunction. Whether augmented O-GlcNAc impacts the uterine artery (UA) function and how it affects the UA during pregnancy remains to be elucidated. We hypothesized that gluc...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2020.173133
更新日期:2020-08-05 00:00:00
abstract::The breakdown of inositol phospholipid (PI) stimulated by hippocampal noradrenaline in rat miniprisms in vitro was used as an index of alpha 1-adrenoceptor function after selective noradrenergic denervation. Selective denervation was produced by microinjections of 6-hydroxydopamine (6-OHDA) into either the dorsal nora...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(86)90715-6
更新日期:1986-04-29 00:00:00
abstract::Pre- and postjunctional pA2 values of the muscarinic antagonist hexahydrosiladifenidol were determined with guinea-pig ileum and rat heart. Hexahydrosiladifenidol did not discriminate between pre- and postjunctional receptors within the same organ but was more potent on the ileum (20-80 times) than on the heart. It is...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(85)90352-8
更新日期:1985-07-11 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::In prehydrated rats, the administration of kappa-opiate agonists such as bremazocine, ethylketocyclazocine or compound Upjohn-50,488 produced a dose-dependent increase in urine output and decreased the concentration of Na+ and K+ in the urine as compared to that of saline-treated rats. The diuretic effect of bremazoci...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(84)90084-0
更新日期:1984-12-15 00:00:00
abstract::We have investigated the effects of antagonists at functional prejunctional alpha 2-adrenoceptors of rat was deferens and rat submandibular gland and compared potencies with affinities for the alpha 2A-, alpha 2B- and putative alpha 2D-ligand binding sites of human platelet, rat kidney, and rat submandibular gland, re...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(92)90297-h
更新日期:1992-08-25 00:00:00
abstract::Synthesis of the vasoconstrictor peptide endothelin-1 by endothelial and epithelial cells is strongly induced by tumor necrosis factor alpha (TNF-alpha). The actions of TNF-alpha are mediated by two transmembrane receptors of approximately 55 (p55, CD120a) and 75 kDa (p75, CD120b). Reagents activating selectively thes...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/s0014-2999(00)00022-4
更新日期:2000-02-25 00:00:00
abstract::Ca(V)2.1 is highly expressed in the nervous system and plays an essential role in the presynaptic modulation of neurotransmitter release machinery. Recently, the antiepileptic drug levetiracetam was reported to inhibit presynaptic Ca(V)2.1 functions, reducing glutamate release in the hippocampus, although the precise ...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2010.07.029
更新日期:2010-10-25 00:00:00
abstract::The effects of a serotonin (5-HT) releasing drug, p-chloroamphetamine, on plasma glucose levels were investigated in rats. p-Chloroamphetamine elicited a significant hyperglycemia. The hyperglycemic effects of p-chloroamphetamine were completely prevented by the 5-HT synthesis inhibitor, p-chlorophenylalanine. Prior a...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/s0014-2999(98)00639-6
更新日期:1998-10-23 00:00:00
abstract::The testicular capsules of different mammalian species exhibit spontaneous motor activity. In addition, contractions can be mediated by neuronal stimulation or exogenous drug administration. However, the physiological role of testicular capsule motor activity is still not well understood. Nevertheless, there is eviden...
journal_title:European journal of pharmacology
pub_type: 杂志文章,评审
doi:10.1016/j.ejphar.2020.173345
更新日期:2020-09-15 00:00:00
abstract::The existence of neurogenic mediator candidates apart from noradrenaline and acetylcholine involved in the control of vascular tone has attracted enormous attention during the past few decades. One such mediator is neuropeptide Y (NPY), which is co-localized with noradrenaline in sympathetic perivascular nerves. Stimu...
journal_title:European journal of pharmacology
pub_type: 杂志文章,评审
doi:10.1016/s0014-2999(98)00242-8
更新日期:1998-05-15 00:00:00
abstract::The imidazopyridines EMD 35993 and EMD 41717 antagonized the anticonflict actions of diazepam and chlordiazepoxide in rodent models which are predictive for anxiolytic action in man. In contrast to other described benzodiazepine antagonists, these compounds did not antagonize either the anticonvulsant or muscle relaxa...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(83)90582-4
更新日期:1983-04-08 00:00:00
abstract::In the search for a selective delta-opioid receptor agonist, (-)-(1R,5R,9R)-5,9-dimethyl-2'-hydroxy-2-(6-hydroxyhexyl)-6,7-benzomorphan hydrochloride ((-)-NIH 11082) and the (+)-enantiomer were synthesized and tested. (-)-NIH 11082 displayed antinociceptive activity in the paraphenylquinone test (PPQ test) in male ICR...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2007.03.008
更新日期:2007-07-02 00:00:00
abstract::In this study we demonstrate allograft survival in a rat model of renal transplantation using the delta1-opioid receptor antagonist, 7-(benzospiroindanyl)naltrexone [corrected]. Treatment with 7-(benzospiroindanyl)naltrexone [corrected] caused 50% of the rats to survive longer than 100 days (untreated, 11 +/- 3 days)....
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/s0014-2999(98)00477-4
更新日期:1998-07-31 00:00:00
abstract::The role of protein kinase C in the endothelin-induced contraction was examined in the isolated rabbit saphenous vein in which endothelin-1, endothelin-3, sarafotoxin S6c and IRL 1620 (succinyl-[Glu9,Ala11,15]endothelin-1-(8-21))-induced contraction at the threshold concentrations of 0.1-1 pM. A selective inhibitor of...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(95)00542-0
更新日期:1995-12-27 00:00:00
abstract::In order to identify new atypical antipsychotic drugs which are more selective for the human dopamine D4 receptor than for the human dopamine D2 (long) receptor, we tested enantiomer pairs of dopamine agonists and dopamine antagonists on the expressed proteins of these cloned receptors. The (+)-aporphines ((+)-N-propy...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/0014-2999(93)90365-o
更新日期:1993-03-16 00:00:00
abstract::To obtain further insight into the interactions between the N-methyl-D-aspartate receptor and opioid receptor systems, we have investigated the effects of the acute treatment of morphine on the expression of serine racemase and D-amino acid oxidase mRNAs in several brain areas of rats. The morphine administration prod...
journal_title:European journal of pharmacology
pub_type: 杂志文章
doi:10.1016/j.ejphar.2005.09.001
更新日期:2005-11-21 00:00:00