Structural basis for ether-a-go-go-related gene K+ channel subtype-dependent activation by niflumic acid.

abstract：:Newly synthesized tocainide analogs were tested for their state-dependent affinity and use-dependent behavior on sodium currents (INa) of adult skeletal muscle fibers by means of the Vaseline-gap voltage clamp method. The drugs had the pharmacophore amino group constrained in position alpha [N-(2,6-dimethylphenyl)pyrr...

journal_title：Molecular pharmacology

authors： De Luca A,Talon S,De Bellis M,Desaphy JF,Lentini G,Corbo F,Scilimati A,Franchini C,Tortorella V,Camerino DC

更新日期：2003-10-01 00:00:00

abstract：:Iron is a biologically essential metal, but excess iron can cause damage to the cardiovascular and nervous systems. We examined the effects of extracellular Fe²⁺ on permeation and gating of Ca(V)3.1 channels stably transfected in HEK293 cells, by using whole-cell recording. Precautions were taken to maintain iron in t...

journal_title：Molecular pharmacology

authors： Lopin KV,Gray IP,Obejero-Paz CA,Thévenod F,Jones SW

更新日期：2012-12-01 00:00:00

abstract：:The binding of agonists and antagonists to alpha 2-adrenergic receptors of human platelets was studied. The receptors showed homogeneous affinities for antagonists but two affinity states for the agonist (-)-epinephrine, which were modulated by guanine nucleotides. Van't Hoff plots of antagonist binding had a break po...

journal_title：Molecular pharmacology

authors： Lohse MJ,Klotz KN,Schwabe U

更新日期：1986-03-01 00:00:00

abstract：:The presence of DNA damage initiates signaling through the ataxia-telangiectasia mutated kinase (ATM) and the ATM- and the Rad3-related kinase (ATR), which phosphorylate, thus activating, the checkpoint kinases (Chk) 1 and 2, which leads to cell cycle arrest. The bifunctional DNA alkylator 1,3-bis(2-chloroethyl)-1-nit...

journal_title：Molecular pharmacology

authors： Cui B,Johnson SP,Bullock N,Ali-Osman F,Bigner DD,Friedman HS

更新日期：2009-06-01 00:00:00

abstract：:Interleukin 6 (IL-6), which is elevated in patients with congestive heart failure and acts as both a chronic marker of inflammation and an acute-phase reactant, is associated with myocardial damage. Circulating levels of arginine vasopressin (AVP) are elevated during cardiac stress and could be a factor for cardiac in...

journal_title：Molecular pharmacology

authors： Xu F,Sun S,Wang X,Ni E,Zhao L,Zhu W

更新日期：2017-09-01 00:00:00

abstract：:Studies of the biochemical mechanisms evoked by conventional treatments for neoplastic diseases point to apoptosis as a key process for elimination of unwanted cells. Although the pathways through which chemotherapeutics promote cell death remain largely unknown, caspase proteases play a central role in the induction ...

journal_title：Molecular pharmacology

authors： Benjamin CW,Hiebsch RR,Jones DA

更新日期：1998-03-01 00:00:00

abstract：:The aim of this study was to use pharmacological inhibition of protein kinase A and mutation of potential protein kinase A phosphorylation sites to determine the role of protein kinase A-catalyzed phosphorylation of the dopamine D(1) receptor in agonist-stimulated desensitization and internalization of the receptor. T...

journal_title：Molecular pharmacology

authors： Mason JN,Kozell LB,Neve KA

更新日期：2002-04-01 00:00:00

abstract：:Chronic morphine treatment has been shown to produce constitutive activation of mu-opioid receptors, and this transition might contribute to the development of tolerance and dependence. The apparent ability of chronic morphine to increase the spontaneous, agonist-independent activation of mu-opioid receptors may be un...

journal_title：Molecular pharmacology

authors： Liu JG,Prather PL

更新日期：2001-07-01 00:00:00

abstract：:A nonnaturally occurring L-configuration nucleoside analog, L-beta-5-bromovinyl-(2-hydroxymethyl)-1,3-(dioxolanyl)uracil (L-BVOddU) selectively inhibited varicella-zoster virus growth in human embryonic lung (HEL) 299 cell culture with an EC(50) of 0.055 microM, whereas no inhibition of CEM and HEL 299 cell growth or ...

journal_title：Molecular pharmacology

authors： Li L,Dutschman GE,Gullen EA,Tsujii E,Grill SP,Choi Y,Chu CK,Cheng YC

更新日期：2000-11-01 00:00:00

abstract：:The aryl hydrocarbon receptor (AhR) is a transcriptional enhancer that is activated by the binding of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and related toxic xenobiotics, as well as some naturally occurring compounds. Ligand binding initiates 1) dissociation of the ligand-bound monomeric AhR from the ligand-unocc...

journal_title：Molecular pharmacology

authors： Henry EC,Rucci G,Gasiewicz TA

更新日期：1994-12-01 00:00:00

abstract：:Using [3H]leukotriene C4 (LTC4) and radioligand-binding techniques, specific leukotriene C4 binding sites have been identified in membranes derived from guinea pig ventricular myocardium. High performance liquid chromatography analyses indicated that, in the presence of the gamma-glutamyl transpeptidase inhibitor L-se...

journal_title：Molecular pharmacology

authors： Hogaboom GK,Mong S,Stadel JM,Crooke ST

更新日期：1985-02-01 00:00:00

abstract：:The anti-arrhythmic quinidine has been reported to be a competitive inhibitor of the catalytic activities of human liver P-450DB, including sparteine delta 2-oxidation and bufuralol 1'-hydroxylation, and we confirmed the observation that submicromolar concentrations are strongly inhibitory. Human liver microsomes oxid...

journal_title：Molecular pharmacology

authors： Guengerich FP,Müller-Enoch D,Blair IA

更新日期：1986-09-01 00:00:00

abstract：:In cells expressing both the insulin receptor isoform A (IRA) and the insulin-like growth factor-1 receptor (IGF1R), the presence of hybrid receptors, made up of an alphabeta-IRA chain associated with an alphabeta-IGF1R chain, has been demonstrated. These heterodimers are found in normal cells, and they also seem to p...

journal_title：Molecular pharmacology

authors： Blanquart C,Gonzalez-Yanes C,Issad T

更新日期：2006-11-01 00:00:00

abstract：:Many Gi-coupled receptors are known to interact with the pertussis toxin (PTX)-insensitive Gz protein. Given that the alpha subunits of Gi and Gz share only 60% identity in their amino acid sequences, their receptor-interacting domains must be highly similar. By swapping the carboxyl termini of alpha i2 and alpha z wi...

journal_title：Molecular pharmacology

authors： Tsu RC,Ho MK,Yung LY,Joshi S,Wong YH

更新日期：1997-07-01 00:00:00

abstract：:Interleukin-2 (IL-2) is an immunoregulatory cytokine whose biological effects are mediated through interaction with specific receptors on the surface of target cells. Due to its presumed role in generating a normal immune response, IL-2 is being evaluated for the treatment of a variety of tumors, in addition to infect...

journal_title：Molecular pharmacology

authors： Chang DZ,Tasayco ML,Ciardelli TL

更新日期：1995-01-01 00:00:00

abstract：:Fusion proteins between the human 5-hydroxytryptamine (5-HT)(1A) receptor and either wild type or certain pertussis toxin-resistant forms of G(o1)alpha and G(i1)alpha display constitutive GTPase activity that can be inhibited by the inverse agonist spiperone. Addition of recombinant regulator of G protein signaling (R...

journal_title：Molecular pharmacology

authors： Welsby PJ,Kellett E,Wilkinson G,Milligan G

更新日期：2002-05-01 00:00:00

abstract：:The CB1 cannabinoid receptor has been implicated in the regulation of bone remodeling and bone mass. A high bone mass (HBM) phenotype was reported in CB1-null mice generated on a CD1 background (CD1(CB1-/-) mice). By contrast, our preliminary studies in cb1-/- mice, backcrossed to C57BL/6J mice (C57(CB1-/-) mice), rev...

journal_title：Molecular pharmacology

authors： Tam J,Ofek O,Fride E,Ledent C,Gabet Y,Müller R,Zimmer A,Mackie K,Mechoulam R,Shohami E,Bab I

更新日期：2006-09-01 00:00:00

abstract：:UDP-glucuronosyltransferase (UGT) 1A1 glucuronidates endogenous metabolites, such as bilirubin, and exogenous substances, and plays a critical role in their detoxification and excretion. In a previous article, we described the phenobarbital response activity to a 290-base pair (bp) distal enhancer sequence (-3499/-321...

journal_title：Molecular pharmacology

authors： Sugatani J,Nishitani S,Yamakawa K,Yoshinari K,Sueyoshi T,Negishi M,Miwa M

更新日期：2005-03-01 00:00:00

abstract：:Organic anion transporter-1 (OAT1) mediates the body disposition of a diverse array of clinically important drugs, including anti-HIV therapeutics, antitumor drugs, antibiotics, antihypertensives, and anti-inflammatories. Therefore, understanding the regulation of OAT1 has profound clinical significance. We previously...

journal_title：Molecular pharmacology

authors： Li S,Zhang Q,You G

更新日期：2013-07-01 00:00:00

abstract：:Sazetidine-A has been recently proposed to be a "silent desensitizer" of alpha4beta2 nicotinic acetylcholine receptors (nAChRs), implying that it desensitizes alpha4beta2 nAChRs without first activating them. This unusual pharmacological property of sazetidine-A makes it, potentially, an excellent research tool to dis...

journal_title：Molecular pharmacology

authors： Zwart R,Carbone AL,Moroni M,Bermudez I,Mogg AJ,Folly EA,Broad LM,Williams AC,Zhang D,Ding C,Heinz BA,Sher E

更新日期：2008-06-01 00:00:00

abstract：:The effects of 5-hydroxytryptamine (5-HT)2A receptor activation on cAMP formation were studied in a cell line derived from embryonic rat cortex (A1A1). 5-HT (EC50 = 0.87 microM) amplified the amount of cAMP formed in response to 5'-N-ethylcarboxamidoadenosine (an adenosine A2 receptor agonist), cholera toxin, and fors...

journal_title：Molecular pharmacology

authors： Berg KA,Clarke WP,Chen Y,Ebersole BJ,McKay RD,Maayani S

更新日期：1994-05-01 00:00:00

abstract：:The co-transfection assay is a novel functional assay using cells transiently transfected with plasmids encoding intracellular receptors and corresponding reporter genes. Using this assay, natural product extracts were tested to identify compounds that modulate intracellular receptor activity, measured as changes in r...

journal_title：Molecular pharmacology

authors： Pathirana C,Stein RB,Berger TS,Fenical W,Ianiro T,Mais DE,Torres A,Goldman ME

更新日期：1995-03-01 00:00:00

abstract：:The cytolytic ionotropic ATP receptor P2X7 has several important roles in immune cell regulation, such as cytokine release, apoptosis, and microbial killing. Although P2X7 receptors are frequently coexpressed with another subtype of P2X receptor, P2X4, they are believed not to form heteromeric assemblies but to functi...

journal_title：Molecular pharmacology

authors： Guo C,Masin M,Qureshi OS,Murrell-Lagnado RD

更新日期：2007-12-01 00:00:00

abstract：:alpha 1-Adrenergic receptor (alpha 1-AR) agonists elevate the intracellular calcium concentration ([Ca2+]i) in 60-80% of astroglia in vitro. Likewise, 60-70% of astroglia exhibit specific binding sites for the alpha 1-AR-selective antagonist (+-)-125I-[beta-(4-hydroxyphenyl)-ethylaminomethyl]tetralone. The density of ...

journal_title：Molecular pharmacology

authors： Shao Y,McCarthy KD

更新日期：1993-08-01 00:00:00

abstract：:Two forms of the multisubunit gamma-aminobutyric acid (GABA)A receptor were expressed in Xenopus oocytes by injecting mRNA encoding the bovine GABAA receptor subunit cDNAs for alpha 1 beta 1 gamma 2L and alpha 3 beta 1 gamma 2L. The properties of these two combinations were examined by electrophysiological recording o...

journal_title：Molecular pharmacology

authors： Wafford KA,Whiting PJ,Kemp JA

更新日期：1993-02-01 00:00:00

abstract：:TWIK-related K(+) 1 (TREK1) potassium channels are members of the two-pore domain potassium channel family and contribute to background potassium conductances in many cell types, where their activity can be regulated by a variety of physiologic and pharmacologic mediators. Fenamates such as FFA (flufenamic acid; 2-{[3...

journal_title：Molecular pharmacology

authors： Veale EL,Al-Moubarak E,Bajaria N,Omoto K,Cao L,Tucker SJ,Stevens EB,Mathie A

更新日期：2014-05-01 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：:Unlike the majority of G protein-coupled receptors, the prostaglandin E(2) (PGE(2)) E-prostanoid 3 (EP3) receptor binds agonist with high affinity that is insensitive to the presence of guanosine 5[prime]-O-(3-thio)triphosphate (GTPγS). We report the identification of mutations that confer GTPγS sensitivity to agonist...

journal_title：Molecular pharmacology

authors： Natarajan C,Hata AN,Hamm HE,Zent R,Breyer RM

更新日期：2013-01-01 00:00:00

abstract：:Neuromedin U (NmU) is a 25 amino acid peptide prominently expressed in the upper gastrointestinal (GI) tract and central nervous system. It is highly conserved throughout evolution and induces smooth muscle contraction in a variety of species. Our understanding of NmU biology has been limited because the identity of i...

journal_title：Molecular pharmacology

authors： Hedrick JA,Morse K,Shan L,Qiao X,Pang L,Wang S,Laz T,Gustafson EL,Bayne M,Monsma FJ Jr

更新日期：2000-10-01 00:00:00

abstract：:Signaling by G-protein-coupled receptors is often considered a uniform process, whereby a homogeneously activated proportion of randomly distributed receptors are activated under equilibrium conditions and produce homogeneous, steady-state intracellular signals. While this may be the case in some biologic systems, the...

journal_title：Molecular pharmacology

authors： Lohse MJ,Hofmann KP

更新日期：2015-09-01 00:00:00