Antagonist conformations with the beta(2)-adrenergic receptor ligand binding pocket.

abstract：:Glioma cells with stem cell properties, termed glioma stem-like cells (GSCs), have been linked to tumor formation, maintenance, and progression and are responsible for the failure of chemotherapy and radiotherapy. Because conventional glioma treatments often fail to eliminate GSCs completely, residual surviving GSCs a...

journal_title：Molecular pharmacology

authors： Kim RK,Kim MJ,Yoon CH,Lim EJ,Yoo KC,Lee GH,Kim YH,Kim H,Jin YB,Lee YJ,Cho CG,Oh YS,Gye MC,Suh Y,Lee SJ

更新日期：2012-09-01 00:00:00

abstract：:Smooth muscle preparations of human aorta or pig coronary arteries contain nearly equal amounts of cGMP-dependent protein kinase isozymes (cGMP kinase I alpha and I beta). In order to understand the roles of these isozymes in relaxing vascular smooth muscle, several new cGMP analogs were synthesized and tested for pot...

journal_title：Molecular pharmacology

authors： Sekhar KR,Hatchett RJ,Shabb JB,Wolfe L,Francis SH,Wells JN,Jastorff B,Butt E,Chakinala MM,Corbin JD

更新日期：1992-07-01 00:00:00

abstract：:The dissociation constants (Kd values) of substance P (SP), physalaemin, kassinin, and SP analogues acting on SP receptors in guinea pig ileal longitudinal muscle strips were determined by the pharmacological procedures of Furchgott [Adv. Drug Res. 3:21-55 (1966)]. This method involves analysis of the concentration-re...

journal_title：Molecular pharmacology

authors： Lin CW,Musacchio JM

更新日期：1983-05-01 00:00:00

abstract：:Diarylsulfonylurea (DSU) antitumor agents represent a new class of oncolytic compounds with an unknown, potentially novel, mechanism of action. At high concentrations of several of these agents, cytotoxicity appears to be a consequence of uncoupling of mitochondria. However, the mechanism of action at pharmacologicall...

journal_title：Molecular pharmacology

authors： Sosinski J,Thakar JH,Germain GS,Dias P,Harwood FC,Kuttesch JF,Houghton PJ

更新日期：1994-05-01 00:00:00

abstract：:Reconstitution experiments with purified components reproduce the basic characteristics of receptor/G protein coupling, i.e., GTP-sensitive high affinity agonist binding and receptor-promoted GTP binding. However, the interaction of agonists with the A1 adenosine receptor in rat and bovine but not human brain membrane...

journal_title：Molecular pharmacology

authors： Nanoff C,Mitterauer T,Roka F,Hohenegger M,Freissmuth M

更新日期：1995-11-01 00:00:00

abstract：:Comparative molecular field analysis (CoMFA) predicts that the large electrostatic field around the phosphate groups of ATP plays a crucial role in stabilizing the open state of the cardiac ryanodine receptor (RyR) channel. We therefore investigated the effects of adenosine-5'-(beta,gamma-methylenetriphosphate) (AMP-P...

journal_title：Molecular pharmacology

authors： Chan WM,Welch W,Sitsapesan R

更新日期：2003-01-01 00:00:00

abstract：:P-glycoprotein, an ATP-driven efflux pump, regulates permeability of the blood-brain barrier (BBB). Sphingolipids, endogenous to brain tissue, influence inflammatory responses and cell survival in vitro. Our laboratory has previously shown that sphingolipid signaling by sphingosine 1-phosphate decreases basal P-glycop...

journal_title：Molecular pharmacology

authors： Mesev EV,Miller DS,Cannon RE

更新日期：2017-04-01 00:00:00

abstract：:Monoamine oxidases (MAOs) A and B, flavin-containing enzymes found in the outer mitochondrial membrane, oxidize many important biogenic and xenobiotic amines. The two enzymes are expressed in many tissues, with some tissues containing primarily one form and others containing both. Although MAO in placental mitochondri...

journal_title：Molecular pharmacology

authors： Riley LA,Waguespack MA,Denney RM

更新日期：1989-07-01 00:00:00

abstract：:Chronic stimulation of beta-adrenoceptors leads to increased mRNA and protein levels of pertussis toxin (PTX)-sensitive guanine nucleotide-binding proteins (G proteins) in the heart. In the present study the time course is reported of the effect of isoprenaline infusions on myocardial mRNA levels of Gi alpha-2, Gi alp...

journal_title：Molecular pharmacology

authors： Eschenhagen T,Mende U,Diederich M,Nose M,Schmitz W,Scholz H,Schulte am Esch J,Warnholtz A,Schäfer H

更新日期：1992-11-01 00:00:00

abstract：:We describe here an approach to characterize various lesions induced in DNA by drug treatments, using three parameters: (a) release of single-stranded DNA fragments by cell lysis in dilute alkali, which result from enzymatic strand scission during DNA repair or chemical alterations of DNA; (b) the presence of high mol...

journal_title：Molecular pharmacology

authors： Lönn U,Lönn S

更新日期：1987-07-01 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：:Cytochrome P450 (P450) enzymes are responsible for metabolizing drugs. Expression of P450s can directly affect drug metabolism, resulting in various outcomes in therapeutic efficacy and adverse effects. Several nuclear receptors are transcription factors that can regulate expression of P450s at both basal and drug-ind...

journal_title：Molecular pharmacology

authors： Chen L,Bao Y,Piekos SC,Zhu K,Zhang L,Zhong XB

更新日期：2018-07-01 00:00:00

abstract：:Aflatrem, a mycotoxin from Aspergillus flavus, potentiates the gamma-aminobutyric acid (GABA)-induced chloride current. This positive allosteric regulatory action of aflatrem was quantitatively studied on the GABAA receptor channel expressed in Xenopus oocytes after injection with chick brain mRNA under voltage-clamp ...

journal_title：Molecular pharmacology

authors： Yao Y,Peter AB,Baur R,Sigel E

更新日期：1989-03-01 00:00:00

abstract：:Cytotoxic effects of quinones are thought to be mediated by redox cycles between quinones and quinols whereby reactive oxygen species are generated. The role of glucuronidation in preventing these toxic redox cycles was investigated by using benzo(a)pyrene-3,6-quinone and isolated rat hepatocytes or Reuber hepatoma ce...

journal_title：Molecular pharmacology

authors： Lilienblum W,Bock-Hennig BS,Bock KW

更新日期：1985-04-01 00:00:00

abstract：:Rapid activation of guanine nucleotide-binding protein (G protein)-mediated signal transduction mechanisms occurs in many tissues. The human neutrophil provides a useful model for studying the mechanisms of these fast processes. Fluorescent chemotactic tetrapeptide and pentapeptide exhibit 30-50% quenching of fluoresc...

journal_title：Molecular pharmacology

authors： Neubig RR,Sklar LA

更新日期：1993-05-01 00:00:00

abstract：:Ubiquitination plays a crucial role in regulating protein turnover. Here we show that ubiquitination regulates the stability of the MDR1 gene product, P-glycoprotein, thereby affecting the functions of this membrane transporter that mediates multidrug resistance. We found that P-glycoprotein was constitutively ubiquit...

journal_title：Molecular pharmacology

authors： Zhang Z,Wu JY,Hait WN,Yang JM

更新日期：2004-09-01 00:00:00

abstract：:Of four monoclonal antibodies to purified rat liver cytochrome P450s, including those from 3-methylcholanthrene-, phenobarbital-, ethanol-, and pregnenolone-16-alpha-carbonitrile-treated rats, only the monoclonal antibody against pregnenolone-16-alpha-carbonitrile-inducible P450 immunodetected proteins in chicken live...

journal_title：Molecular pharmacology

authors： Lorr NA,Bloom SE,Park SS,Gelboin HV,Miller H,Friedman FK

更新日期：1989-05-01 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：:Ca2-dependent protein phosphorylations activated by calmodulin or phospholipid were studied using selective inhibitors. Both protein phosphorylations were inhibited by N-(6-aminohexyl)-5-chloro-1-naphthalenesulfonamide (W-7) and its derivatives. Kinetic analysis indicated that the primary effect of these agents was me...

journal_title：Molecular pharmacology

authors： Tanaka T,Ohmura T,Yamakado T,Hidaka H

更新日期：1982-09-01 00:00:00

abstract：:Inhibitors of the proteasome, a multicatalytic proteinase complex responsible for intracellular proteolysis, activate programmed cell death in part through the c-Jun-N-terminal kinase (JNK). Proteasome inhibitors also induce mitogen-activated protein kinase phosphatase-1 (MKP-1), however, which can inactivate JNK, and...

journal_title：Molecular pharmacology

authors： Small GW,Shi YY,Edmund NA,Somasundaram S,Moore DT,Orlowski RZ

更新日期：2004-12-01 00:00:00

abstract：:Folate receptor-targeted cancer therapies constitute a promising treatment for the approximately one third of human cancers that overexpress the folate receptor (FR). However, the potencies of all folate-receptor targeted therapies depend on 1) the rate of folate-linked drug conjugate binding to the cancer cell surfac...

journal_title：Molecular pharmacology

authors： Paulos CM,Reddy JA,Leamon CP,Turk MJ,Low PS

更新日期：2004-12-01 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 epipodophyllotoxin etoposide is an inhibitor of topoisomerase II. The effects of this agent on gene expression, particularly the transcriptional induction of genes implicated in growth control, are unknown. The present results demonstrate that etoposide induces expression of the c-jun protooncogene in HL-60 myeloi...

journal_title：Molecular pharmacology

authors： Rubin E,Kharbanda S,Gunji H,Kufe D

更新日期：1991-06-01 00:00:00

abstract：:A substantial body of research implicates L-cysteine sulfinic acid (L-CSA) as a neurotransmitter. However, all physiological actions of L-CSA that have been pharmacologically characterized are mediated by cross-activation of glutamate receptors, and no receptor has been identified that is primarily activated by L-CSA....

journal_title：Molecular pharmacology

authors： Boss V,Nutt KM,Conn PJ

更新日期：1994-06-01 00:00:00

abstract：:Metyrapone administration to 21- and 90-day-old male rats causes a transcriptional induction of the hepatic glucocorticoid-inducible CYP3A1 gene within an hour as determined by nuclear run-on experiments. Analyses performed 24 hr after metyrapone administration in both ages of rat demonstrate that the transcriptional ...

journal_title：Molecular pharmacology

authors： Wright MC,Wang XJ,Pimenta M,Ribeiro V,Paine AJ,Lechner MC

更新日期：1996-10-01 00:00:00

abstract：:Capacitative Ca2+ influx, which occurs in response to mobilization of intracellular Ca2+ stores, is a general feature of many cell types. Although the mechanism of capacitative Ca2+ entry is not known, evidence suggests the involvement of small G proteins that are prenylated on a cysteine residue near their carboxyl t...

journal_title：Molecular pharmacology

authors： Xu Y,Gilbert BA,Rando RR,Chen L,Tashjian AH Jr

更新日期：1996-12-01 00:00:00

abstract：:The renal outer medullary potassium channel (ROMK) is expressed in the kidney tubule and critically regulates sodium and potassium balance. The physiological functions of other inward rectifying K(+) (Kir) channels expressed in the nephron, such as Kir7.1, are less well understood in part due to the lack of selective ...

journal_title：Molecular pharmacology

authors： Lewis LM,Bhave G,Chauder BA,Banerjee S,Lornsen KA,Redha R,Fallen K,Lindsley CW,Weaver CD,Denton JS

更新日期：2009-11-01 00:00:00

abstract：:We examined the influence of the molecular structure of four novel adamantane derivatives on their ability to block the channels of nicotinic acetylcholine (ACh) and N-methyl-D-aspartate (NMDA) receptors. The structure of the drugs is Ad-CH2-N+H2-(CH2)5-R, where Ad is adamantane and R was varied from ammonium (IEM-175...

journal_title：Molecular pharmacology

authors： Antonov SM,Johnson JW,Lukomskaya NY,Potapyeva NN,Gmiro VE,Magazanik LG

更新日期：1995-03-01 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：:The D2 dopamine receptor (D2R) was examined for its ability to mediate nuclear factor-kappaB (NF-kappaB) activation through G proteins. Stimulation of D2R-transfected HeLa cells with its agonist quinpirole induced the expression of a NF-kappaB luciferase reporter and formation of NF-kappaB-DNA complex. This response w...

journal_title：Molecular pharmacology

authors： Yang M,Zhang H,Voyno-Yasenetskaya T,Ye RD

更新日期：2003-08-01 00:00:00