Kinetic studies of [3H]-N-methylscopolamine binding to muscarinic receptors in the rat central nervous system: evidence for the existence of three classes of binding sites.

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：:Angiotensin II (AII) stimulates rapid increases in cytosolic Ca2+ concentrations in Xenopus laevis oocytes after binding to specific receptors located in the surrounding follicular cells. In follicular oocytes, the peptide AII receptor antagonists saralasin (IC50 = 25 nM) and CGP 42112A (IC50 = 400 nM) were orders of ...

journal_title：Molecular pharmacology

authors： Ji H,Sandberg K,Catt KJ

更新日期：1991-02-01 00:00:00

abstract：:The chemical reaction of 1,4-benzoquinone with glutathione results in the formation of adducts that exhibit increasing degrees of glutathione substitution. Purification of these adducts and analysis by 1H and 13C nuclear magnetic resonance spectroscopy revealed the products of the reaction to be 2-(glutathion-S-yl)hyd...

journal_title：Molecular pharmacology

authors： Lau SS,Hill BA,Highet RJ,Monks TJ

更新日期：1988-12-01 00:00:00

abstract：:The class III antiarrhythmic drugs amiodarone and bretylium tosylate are cationic/amphiphilic, and various substances with these physico-chemical properties are known to directly activate heterotrimeric regulatory G proteins. We asked the question of whether class III antiarrhythmic drugs are also direct G protein act...

journal_title：Molecular pharmacology

authors： Hagelüken A,Nürnberg B,Harhammer R,Grünbaum L,Schunack W,Seifert R

更新日期：1995-02-01 00:00:00

abstract：:Voltage-gated sodium (Na(V)1) channels play a critical role in modulating the excitability of sensory neurons, and human genetic evidence points to Na(V)1.7 as an essential contributor to pain signaling. Human loss-of-function mutations in SCN9A, the gene encoding Na(V)1.7, cause channelopathy-associated indifference ...

journal_title：Molecular pharmacology

authors： Schmalhofer WA,Calhoun J,Burrows R,Bailey T,Kohler MG,Weinglass AB,Kaczorowski GJ,Garcia ML,Koltzenburg M,Priest BT

更新日期：2008-11-01 00:00:00

abstract：:The effects of ethanol on a number of electrophysiological parameters were examined in 10 different voltage-gated potassium channels expressed in Xenopus oocytes. None of the channels examined was highly sensitive to ethanol, but there was significant variability among the channels tested at concentrations of ethanol ...

journal_title：Molecular pharmacology

authors： Anantharam V,Bayley H,Wilson A,Treistman SN

更新日期：1992-09-01 00:00:00

abstract：:1-[6-[[(17beta)-3-methoxyestra-1,3,5(10)-trien-17-yl]amino]hexyl]-1H-pyrrole-2,5-dione (U73122) is widely used to inhibit phospholipase C (PLC)-mediated signaling, but we and others have also reported a PLC-independent block of Kir3 channels in native cells. To elaborate on this major side effect, we examined the acti...

journal_title：Molecular pharmacology

authors： Klose A,Huth T,Alzheimer C

更新日期：2008-11-01 00:00:00

abstract：:The effect of lysosomotropic agents and secretory inhibitors were compared with verapamil for their effect on the activity of doxorubicin (DOX) in multiple drug-resistant (MDR) P388 leukemia cells (P388R) and in blocking anthracycline efflux from these cells. Agents known to interact with the plasma membrane did not p...

journal_title：Molecular pharmacology

authors： Klohs WD,Steinkampf RW

更新日期：1988-08-01 00:00:00

abstract：:We demonstrated previously that nonsteroidal anti-inflammatory drugs (NSAIDs) increased p27(Kip1) by inhibiting protein degradation to suppress the proliferation of human lung cancer cells. In this study, we elucidate the molecular mechanism by which NSAIDs modulate p27(Kip1) proteolysis. Immunoblotting and in vitro u...

journal_title：Molecular pharmacology

authors： Huang YC,Chuang LY,Hung WC

更新日期：2002-12-01 00:00:00

abstract：:Benzamide riboside (BR) and tiazofurin (TR) are converted to analogs of NAD that inhibit IMP dehydrogenase (IMPDH), resulting in cellular depletion of GTP and dGTP and inhibition of proliferation. The current work was undertaken to identify the human nucleoside transporters involved in cellular uptake of BR and TR and...

journal_title：Molecular pharmacology

authors： Damaraju VL,Visser F,Zhang J,Mowles D,Ng AM,Young JD,Jayaram HN,Cass CE

更新日期：2005-01-01 00:00:00

abstract：:Thiourea, phenylthiourea, and methimazole perfused into rat liver stimulated the biliary efflux of GSSG without affecting the excretion of GSH into either the bile or the caval perfusate. The thiocarbamide moiety appears essential, since perfusion with urea, phenylurea, or N-methylimidazole did not stimulate GSSG rele...

journal_title：Molecular pharmacology

authors： Krieter PA,Ziegler DM,Hill KE,Burk RF

更新日期：1984-07-01 00:00:00

abstract：:Airway smooth muscle (ASM) cells can act as effector cells in the initiation and/or perpetuation of airway inflammation in asthma by producing various inflammatory chemokines or cytokines. Previous studies from our laboratory and others showed that the combination of tumor necrosis factor-alpha (TNFalpha) and interfer...

journal_title：Molecular pharmacology

authors： Keslacy S,Tliba O,Baidouri H,Amrani Y

更新日期：2007-02-01 00:00:00

abstract：:We have, in the accompanying work, demonstrated the coexistence of M2 and M3 muscarinic receptors in the circular smooth muscle of canine colon. In the present study, the effects of muscarinic receptor stimulation on phosphoinositide turnover and adenylate cyclase activity were examined. In myo-[3H]inositol-labeled ci...

journal_title：Molecular pharmacology

authors： Zhang LB,Buxton IL

更新日期：1991-12-01 00:00:00

abstract：:It is established that agmatine, an endogenously formed decarboxylated arginine, is a weak competitive inhibitor of neuronal nitric-oxide synthase (nNOS) with an apparent Ki value of 660 microM [Biochem J 316:247-249, 1996]. Although agmatine is known to bind to alpha-adrenergic and imidazoline receptors, it has been ...

journal_title：Molecular pharmacology

authors： Demady DR,Jianmongkol S,Vuletich JL,Bender AT,Osawa Y

更新日期：2001-01-01 00:00:00

abstract：:Drug-induced plasticity of excitatory synapses has been proposed to be the cellular mechanism underlying the aberrant learning associated with addiction. Exposure to various drugs of abuse causes both morphological plasticity of dendritic spines and functional plasticity of excitatory synaptic transmission. Chronic ac...

journal_title：Molecular pharmacology

authors： Miller EC,Zhang L,Dummer BW,Cariveau DR,Loh H,Law PY,Liao D

更新日期：2012-08-01 00:00:00

abstract：:The MUC1 C-terminal transmembrane subunit (MUC1-C) oncoprotein is a direct activator of the canonical nuclear factor-kappaB (NF-kappaB) RelA/p65 pathway and is aberrantly expressed in human multiple myeloma cells. However, it is not known whether multiple myeloma cells are sensitive to the disruption of MUC1-C functio...

journal_title：Molecular pharmacology

authors： Yin L,Ahmad R,Kosugi M,Kufe T,Vasir B,Avigan D,Kharbanda S,Kufe D

更新日期：2010-08-01 00:00:00

abstract：:Nefiracetam (DM-9384) is a new pyrrolidone nootropic drug being developed for the treatment of Alzheimer's type and poststroke vascular-type dementia. Because the cholinergic system plays an important role in cognitive functions and Alzheimer's disease dementia, the present study was conducted to elucidate the mechani...

journal_title：Molecular pharmacology

authors： Zhao X,Kuryatov A,Lindstrom JM,Yeh JZ,Narahashi T

更新日期：2001-04-01 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：:Pertussis toxin (PTX) ADP-ribosylates alpha subunits of GTP-binding proteins (G proteins) when they are in association with beta gamma dimers, and free alpha subunits are thought not to be substrates under standard assay conditions. We now report the rather unexpected discovery that synthetic peptides encompassing the...

journal_title：Molecular pharmacology

authors： Graf R,Codina J,Birnbaumer L

更新日期：1992-11-01 00:00:00

abstract：:To enable the detailed pharmacological characterization of five bombesin (BN) analogs with respect to the human gastrin-releasing peptide (GRP) receptor, we ectopically expressed the receptor in BALB/3T3 cells. In such cells (termed GR1 cells), GRP stimulated DNA synthesis and Ca2+ mobilization. Two of these analogs, ...

journal_title：Molecular pharmacology

authors： Wu JM,Hoang DO,Feldman RI

更新日期：1995-04-01 00:00:00

abstract：:The cDNA for the rat alpha 1c-adrenergic receptor (AR) has been cloned using a probe derived from the bovine alpha 1c-AR sequence. Clone rB7a has a 2.6-kilobase insert with a 1390-base pair open reading frame and encodes a receptor of 466 amino acids. The cloned receptor has 91% amino acid identity with the bovine alp...

journal_title：Molecular pharmacology

authors： Laz TM,Forray C,Smith KE,Bard JA,Vaysse PJ,Branchek TA,Weinshank RL

更新日期：1994-09-01 00:00:00

abstract：:Direct gastric mucosal cell damage mediated by nonsteroidal anti-inflammatory drugs (NSAIDs) is involved in the formation of NSAID-induced gastric lesions. We recently suggested that this direct cytotoxicity of NSAIDs is caused by their membrane-permeabilization activity. Geranylgeranylacetone (GGA), a clinically used...

journal_title：Molecular pharmacology

authors： Ushijima H,Tanaka K,Takeda M,Katsu T,Mima S,Mizushima T

更新日期：2005-10-01 00:00:00

abstract：:In cervical cancer, the p53 and retinoblastoma (pRb) tumor suppressor pathways are disrupted by the human papilloma virus (HPV) E6 and E7 oncoproteins, because E6 targets p53 and E7 targets pRb for rapid proteasome-mediated degradation. We have investigated whether E6 suppression with small interfering RNA (siRNA) res...

journal_title：Molecular pharmacology

authors： Tan S,Hougardy BM,Meersma GJ,Schaap B,de Vries EG,van der Zee AG,de Jong S

更新日期：2012-05-01 00:00:00

abstract：:Multidrug resistance-associated protein 1 (Mrp1; Abcc1) is expressed in sarcolemma of murine heart, where it probably protects the cardiomyocyte by mediating efflux of endo- and xenobiotics. We used doxorubicin (DOX), a chemotherapeutic drug known to induce oxidative stress and thereby cardiac injury, as a model cardi...

journal_title：Molecular pharmacology

authors： Jungsuwadee P,Nithipongvanitch R,Chen Y,Oberley TD,Butterfield DA,St Clair DK,Vore M

更新日期：2009-05-01 00:00:00

abstract：:Our previous studies suggested that the dNTP/dNDP transporter systems that exist in mitochondria for transporting dNTP/dNDP from the cytoplasm to the mitochondria for mitochondrial DNA (mtDNA) synthesis play a critical role in delayed cytotoxicity of anti-human immunodeficiency virus (HIV) dideoxynucleoside analogs in...

journal_title：Molecular pharmacology

authors： Lam W,Chen C,Ruan S,Leung CH,Cheng YC

更新日期：2005-02-01 00:00:00

abstract：:Recombinant interferon-alpha (IFN) enhances the cytotoxic effects of the fluorinated pyrimidine, 5-fluorouracil (5FU), against two human colon cancer cell lines. The aspartate transcarbamylase (ATCase) inhibitor, N-(phosphonacetyl)-L-aspartate (PALA), was studied in combination with 5FU/IFN to determine whether furthe...

journal_title：Molecular pharmacology

authors： Wadler S,Mao X,Bajaj R,Hallam S,Schwartz EL

更新日期：1993-11-01 00:00:00

abstract：:Multidrug resistance-associated protein 2 (MRP2) transports glutathione conjugates, glucuronide conjugates, and sulfated conjugates of bile acids. In the present study, we examined the role of charged amino acids in the transmembrane domains of rat Mrp2, conserved among MRP families, using the isolated membrane vesicl...

journal_title：Molecular pharmacology

authors： Ito K,Suzuki H,Sugiyama Y

更新日期：2001-05-01 00:00:00

abstract：:We studied the mechanism by which the peptide omega-grammotoxin-SIA inhibits voltage-dependent calcium channels. Grammotoxin at concentrations of > 50 nM completely inhibited inward current carried by 2 mM barium through P-type channels in rat cerebellar Purkinje neurons when current was elicited by depolarizations up...

journal_title：Molecular pharmacology

authors： McDonough SI,Lampe RA,Keith RA,Bean BP

更新日期：1997-12-01 00:00:00

abstract：:We previously described the development of genetic models to study the in vivo functions of the hepatic cytochrome P450 (P450) system, through the hepatic deletion of either cytochrome P450 oxidoreductase [POR; HRN (hepatic reductase null) line] or cytochrome b(5) [HBN (hepatic cytochrome b(5) null) line]. However, HR...

journal_title：Molecular pharmacology

authors： Henderson CJ,McLaughlin LA,Wolf CR

更新日期：2013-06-01 00:00:00

abstract：:Binding of [3H](d)-N-allylnormetazocine ([3H](d)-NANM) to rat brain membranes is stereospecific, reversible, and saturable (Bmax = 260 fmol/mg of protein) and manifests moderately high affinity (Kd = 20 nM). The rank order of potency among opioidbenzomorphans and phencyclidine (PCP) analogs for competition for [3H](d)...

journal_title：Molecular pharmacology

authors： Itzhak Y,Hiller JM,Simon EJ

更新日期：1985-01-01 00:00:00