Elucidating the molecular basis of action of a classic drug: guanidine compounds as inhibitors of voltage-gated potassium channels.

abstract：:By limiting unrestricted activation of intracellular effectors, compartmentalised signalling of cyclic nucleotides confers specificity to extracellular stimuli and is critical for the development and health of cells and organisms. Dissecting the molecular mechanisms that allow local control of cyclic nucleotide signal...

journal_title：Molecular pharmacology

authors： Schleicher K,Zaccolo M

更新日期：2020-02-28 00:00:00

abstract：:Retina from 1-day-old chicks is a valuable tissue model for studying neuronal nicotinic receptors because it expresses a large number of the developmentally regulated high affinity [(3)H]epibatidine labeled nicotinic receptors. Most of these receptors contain the beta4 subunit associated with different alpha subunits....

journal_title：Molecular pharmacology

authors： Barabino B,Vailati S,Moretti M,McIntosh JM,Longhi R,Clementi F,Gotti C

更新日期：2001-06-01 00:00:00

abstract：:n-Dodecylguanidine (C12-G) is an amphipathic compound with a guanidine moiety, which is positively charged at physiological pH, and a hydrophobic side chain. Its effects on an A-type K+ channel clone (rKv1.4) expressed in Xenopus oocytes were examined. C12-G caused a concentration-dependent (1-20 microM) positive shif...

journal_title：Molecular pharmacology

authors： Yao JA,Saxena NC,Ziai MR,Ling S,Tseng GN

更新日期：1995-07-01 00:00:00

abstract：:[This corrects the article on p. 21 in vol. 81, PMID: 21984254.]. ...

journal_title：Molecular pharmacology

authors：

更新日期：2016-01-01 00:00:00

abstract：:The binding kinetics of [3H]Ro 15-1788, a selective benzodiazepine receptor antagonist, to synaptosomal membranes of rat cerebral cortices was studied. [3H]Ro 15-1788 binds with high affinity (dissociation constant, 0.53 nM) to a single class of binding sites (maximal binding capacity, 1.97 pmoles/mg of protein). Equi...

journal_title：Molecular pharmacology

authors： Chiu TH,Rosenberg HC

更新日期：1983-03-01 00:00:00

abstract：:Intracellular recordings of membrane potassium current were made from rat locus coeruleus in vitro. The effects of agonists at mu-opioid receptors were studied on neurons from rats that had been chronically treated with morphine; these were compared with actions on neurons from control rats. Tolerance to the opioid-in...

journal_title：Molecular pharmacology

authors： Christie MJ,Williams JT,North RA

更新日期：1987-11-01 00:00:00

abstract：:Barbiturate-induced anesthesia is a complex mechanism that probably involves several ligand-gated ion channel superfamilies. One of these superfamilies includes the archetypical nicotinic acetylcholine receptor (nAChR), in which barbiturates act as noncompetitive antagonists. In this regard, we used the Torpedo califo...

journal_title：Molecular pharmacology

authors： Arias HR,McCardy EA,Gallagher MJ,Blanton MP

更新日期：2001-09-01 00:00:00

abstract：:The UGT1 locus is felt to be highly conserved between species, as is evident from the characterization of the locus in rodents and humans. In rabbits, cDNAs encoding proteins homologous to human UGT1A4, UGT1A6, and UGT1A7 have previously been identified. Here we demonstrate by Southern blot analysis, using exon 1 dive...

journal_title：Molecular pharmacology

authors： Li Q,Lamb G,Tukey RH

更新日期：2000-07-01 00:00:00

abstract：:The mechanisms underlying mastoparan-induced elevation of the intracellular free calcium concentration ([Ca2+]i) were investigated in the insulin-secreting cell lines RINm5F and HIT. In both cell types, micromolar concentrations of mastoparan induced a prompt increase of [Ca2+]i, measured as an increase in fura-2 fluo...

journal_title：Molecular pharmacology

authors： Eddlestone GT,Komatsu M,Shen L,Sharp GW

更新日期：1995-04-01 00:00:00

abstract：:The membrane-permeable, noncompetitive inositol 1,4,5-trisphosphate (IP3)-receptor inhibitor 2-aminoethoxydiphenyl borane (2-APB) has been widely used to probe for IP3-receptor involvement in calcium signaling pathways. However, a number of recent studies in different cell types revealed other sites of action of 2-APB...

journal_title：Molecular pharmacology

authors： Braun FJ,Aziz O,Putney JW Jr

更新日期：2003-06-01 00:00:00

abstract：:Smad4, a key transcription factor in the transforming growth factor-β signaling pathway, is involved in a variety of cell physiologic and pathologic processes. Here, we characterized megakaryocyte/platelet-specific Smad4 deficiency in mice to elucidate its effect on platelet function. We found that megakaryocyte/plate...

journal_title：Molecular pharmacology

authors： Wang Y,Jiang L,Mo X,Lan Y,Yang X,Liu X,Zhang J,Zhu L,Liu J,Wu X

更新日期：2017-09-01 00:00:00

abstract：:This article describes the expected phenotypic behavior of all types of ligands in constitutively active receptor systems and, in particular, the molecular mechanisms of inverse agonism. The possible physiological relevance of inverse agonism also is discussed. Competitive antagonists with the molecular property of ne...

journal_title：Molecular pharmacology

authors： Kenakin T

更新日期：2004-01-01 00:00:00

abstract：:Metabolism of [3H]-(+/-)-trans-1,2-dihydroxy-1,2-dihydrobenz[a] anthracene by liver microsomes isolated from control, phenobarbital-treated, and 3-methylcholanthrene-treated Long-Evans rats and from 3-methylcholanthrene-treated Sprague-Dawley rats was examined. Liver microsomes from both control and phenobarbital-trea...

journal_title：Molecular pharmacology

authors： Vyas KP,van Bladeren PJ,Thakker DR,Yagi H,Sayer JM,Levin W,Jerina DM

更新日期：1983-07-01 00:00:00

abstract：:The effect of relatively nontoxic levels of HgCl2 on semiconservative DNA synthesis and on DNA repair induced following treatment of intact cells with X-ray or ultraviolet (UV) light has been studied in cultured Chinese hamster ovary cells. In the presence of 1 microM HgCl2 the repair of DNA strand breaks induced by 4...

journal_title：Molecular pharmacology

authors： Christie NT,Cantoni O,Sugiyama M,Cattabeni F,Costa M

更新日期：1986-02-01 00:00:00

abstract：:Vitamin A-derived metabolites act as ligands for nuclear receptors controlling the expression of a number of genes. Stereospecific saturation of the C(13)-C(14) double bond of all-trans-retinol by the enzyme, retinol saturase (RetSat), leads to the production of (R)-all-trans-13,14-dihydroretinol. In liver and adipose...

journal_title：Molecular pharmacology

authors： Moise AR,Alvarez S,Domínguez M,Alvarez R,Golczak M,Lobo GP,von Lintig J,de Lera AR,Palczewski K

更新日期：2009-12-01 00:00:00

abstract：:Previous studies showed that lapatinib and obatoclax interact in a greater-than-additive fashion to cause cell death and do so through a toxic form of autophagy. The present studies sought to extend our analyses. Lapatinib and obatoclax killed multiple tumor cell types, and cells lacking phosphatase and tensin homolog...

journal_title：Molecular pharmacology

authors： Cruickshanks N,Tang Y,Booth L,Hamed H,Grant S,Dent P

更新日期：2012-12-01 00:00:00

abstract：:The exofacial part of transmembrane domain 5 (TMD 5) of the cationic amine-binding subclass of 7-transmembrane receptors is thought to be important in binding the side chain of the agonist. Residues Ile-188 through Ala-196 in TMD 5 of the M(1) muscarinic acetylcholine receptor (mAChR) have been studied by Cys- and Ala...

journal_title：Molecular pharmacology

authors： Allman K,Page KM,Curtis CA,Hulme EC

更新日期：2000-07-01 00:00:00

abstract：:The two forms of pituitary adenylate cyclase-activating polypeptide, PACAP27 and PACAP38, are two neuropeptide hormones related to the vasoactive intestinal peptide/secretin/ glucagon family of peptides. PACAP receptors that are positively coupled to adenylyl cyclase and phospholipase C have been identified in culture...

journal_title：Molecular pharmacology

authors： Cavallaro S,Copani A,D'Agata V,Musco S,Petralia S,Ventra C,Stivala F,Travali S,Canonico PL

更新日期：1996-07-01 00:00:00

abstract：:Receptors from distant species may have conserved functions despite significant differences in protein sequences. Whereas the noncritical residues are often changed in distant species, the amino acids critical in receptor functions are often conserved. Studying the conserved residues between receptors from distant spe...

journal_title：Molecular pharmacology

authors： Kuei C,Yu J,Zhu J,Wu J,Zhang L,Shih A,Mirzadegan T,Lovenberg T,Liu C

更新日期：2011-11-01 00:00:00

abstract：:The fluorogenic sulfhydryl probe 7-diethylamino-3-(4'-maleimidylphenyl)-4-methylcoumarin (CPM) (1-50 nM) is used to characterize the functional role and location of highly reactive thiol groups on the ryanodine-sensitive Ca2+ release channel complex [i.e., ryanodine receptors (RyRs)] of skeletal and cardiac junctional...

journal_title：Molecular pharmacology

authors： Liu G,Abramson JJ,Zable AC,Pessah IN

更新日期：1994-02-01 00:00:00

abstract：:Inhibitors of the serotonin transporter (SERT) are widely used antidepressant agents, but the structural mechanism for inhibitory activity and selectivity over the closely related norepinephrine transporter (NET) is not well understood. Here we use a combination of chemical, biological, and computational methods to de...

journal_title：Molecular pharmacology

authors： Andersen J,Stuhr-Hansen N,Zachariassen LG,Koldsø H,Schiøtt B,Strømgaard K,Kristensen AS

更新日期：2014-05-01 00:00:00

abstract：:Several lines of evidence suggest that G-protein-coupled receptors can adopt different active conformations, but their direct demonstration in intact cells is still missing. Using a fluorescence resonance energy transfer (FRET)-based approach we studied conformational changes in alpha(2A)-adrenergic receptors in intac...

journal_title：Molecular pharmacology

authors： Zürn A,Zabel U,Vilardaga JP,Schindelin H,Lohse MJ,Hoffmann C

更新日期：2009-03-01 00:00:00

abstract：:Microglial activation is an invariant feature of Alzheimer's disease (AD). It is noteworthy that cannabinoids are neuroprotective by preventing β-amyloid (Aβ)-induced microglial activation both in vitro and in vivo. On the other hand, the phytocannabinoid cannabidiol (CBD) has shown anti-inflammatory properties in dif...

journal_title：Molecular pharmacology

authors： Martín-Moreno AM,Reigada D,Ramírez BG,Mechoulam R,Innamorato N,Cuadrado A,de Ceballos ML

更新日期：2011-06-01 00:00:00

abstract：:2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) suppresses many immune responses, both innate and adaptive. Suppression is mediated by the aryl hydrocarbon receptor (AhR), a ligand-activated transcription factor. The AhR mediates TCDD toxicity presumably through the alteration of transcriptional events, either by promoting...

journal_title：Molecular pharmacology

authors： Ruby CE,Leid M,Kerkvliet NI

更新日期：2002-09-01 00:00:00

abstract：:This study demonstrates the presence of a novel endothelin (ET) receptor subtype that displays high affinity for both ETA- and ETB-selective ligands. This subtype has been identified in canine spleen membranes using ETB-selective agonists ET-3, IRL-1620, sarafotoxin 6c (S6c) as well as ETA-selective antagonists BQ123 ...

journal_title：Molecular pharmacology

authors： Nambi P,Pullen M,Kincaid J,Nuthulaganti P,Aiyar N,Brooks DP,Gellai M,Kumar C

更新日期：1997-10-01 00:00:00

abstract：:Cytokines are thought to cause the depression of cytochrome P-450 (CYP)-associated drug metabolism in humans during inflammation and infection. We have examined the role of five cytokines, i.e., interleukin-1 beta, interleukin-4, interleukin-6, tumor necrosis factor-alpha, and interferon-gamma, on the expression of CY...

journal_title：Molecular pharmacology

authors： Abdel-Razzak Z,Loyer P,Fautrel A,Gautier JC,Corcos L,Turlin B,Beaune P,Guillouzo A

更新日期：1993-10-01 00:00:00

abstract：:It is widely accepted that cAMP signaling is compartmentalized within cells. However, our knowledge of how receptors, cAMP signaling enzymes, effectors, and other key proteins form specific signaling complexes to regulate specific cell responses is limited. The multicomponent nature of these systems and the spatiotemp...

journal_title：Molecular pharmacology

authors： Johnstone TB,Agarwal SR,Harvey RD,Ostrom RS

更新日期：2018-04-01 00:00:00

abstract：:Bioassay-guided fractionation was used to isolate the lignan polygamain as the microtubule-active constituent in the crude extract of the Mountain torchwood, Amyris madrensis. Similar to the effects of the crude plant extract, polygamain caused dose-dependent loss of cellular microtubules and the formation of aberrant...

journal_title：Molecular pharmacology

authors： Hartley RM,Peng J,Fest GA,Dakshanamurthy S,Frantz DE,Brown ML,Mooberry SL

更新日期：2012-03-01 00:00:00

abstract：:Previous studies have shown that neural stimulation of brown adipose tissue (BAT) reorganizes the expression and activity of signaling proteins in the beta-adrenergic adenylyl cyclase pathway. Cold stress increases neural stimulation of BAT and increases alpha1-adrenergic receptor number; however, the alpha1 receptor ...

journal_title：Molecular pharmacology

authors： Granneman JG,Zhai Y,Lahners KN

更新日期：1997-04-01 00:00:00

abstract：:Undesired block of human ERG1 potassium channels is the basis for cardiac side effects of many different types of drugs. Therefore, it is important to know exactly why some drugs particularly bind to these channels with high affinity. Upon expression in mammalian cells and Xenopus laevis oocytes, we investigated the i...

journal_title：Molecular pharmacology

authors： Gessner G,Zacharias M,Bechstedt S,Schönherr R,Heinemann SH

更新日期：2004-05-01 00:00:00