abstract：:Bryostatin 1 and phorbol-12-myristate-13-acetate (PMA) are both potent activators of protein kinase C (PKC), although in primary mouse keratinocytes bryostatin 1 does not induce differentiation and blocks PMA-induced differentiation. We report here that in primary mouse keratinocytes PMA caused translocation of PKC-ep...

journal_title：Molecular pharmacology

authors： Szallasi Z,Denning MF,Smith CB,Dlugosz AA,Yuspa SH,Pettit GR,Blumberg PM

更新日期：1994-11-01 00:00:00

abstract：:The cDNAs for the four murine aryl hydrocarbon (Ah) receptor alleles were cloned and sequenced, and the deduced amino acid sequences were compared. The Ahb-1 allele encodes a protein of 805 amino acids, the Ahd and Ahb-2 alleles encode proteins of 848 amino acids, and the Ahb-3 allele encodes a protein of 883 amino ac...

journal_title：Molecular pharmacology

authors： Poland A,Palen D,Glover E

更新日期：1994-11-01 00:00:00

abstract：:Reuptake of glutamate in astrocytes, a critical mechanism involved in the maintenance of physiological excitatory amino acid neurotransmission, is inhibited by both arachidonic acid (AA) and reactive oxygen species (ROS), via incompletely defined molecular mechanisms. Because ROS are generated during AA metabolism and...

journal_title：Molecular pharmacology

authors： Volterra A,Trotti D,Racagni G

更新日期：1994-11-01 00:00:00

abstract：:Previous studies have shown that exposure of phenobarbital-pretreated rats to halothane in 10% O2 causes centrilobular necrosis, induces expression of the 72-kDa heat shock protein (HSP72), and produces several trifluoroacetylated adducts. In the present study the time course of development of the centrilobular lesion...

journal_title：Molecular pharmacology

authors： Lin WQ,van Dyke RA,Marsh HM,Trudell JR

更新日期：1994-10-01 00:00:00

abstract：:Purified assembly-competent vimentin, an intermediate filament protein, was obtained from bovine lens in this study. The effects of withangulatin A on vimentin assembly with or without phosphorylation were examined by negative-stain electron microscopy. Soluble tetrameric vimentin was assembled into irregular fibrils ...

journal_title：Molecular pharmacology

authors： Perng MD,Cheng TJ,Chen CM,Lai YK

更新日期：1994-10-01 00:00:00

abstract：:2-Methyl-2-nitrosopropane (MNP) has long been known to undergo photochemical and thermal decomposition, generating di-tert-butyl nitroxide, in organic solvent. The present study was undertaken to demonstrate that MNP can be used as a caged-nitric oxide (NO), which can liberate NO upon illumination. Photolysis of MNP l...

journal_title：Molecular pharmacology

authors： Pou SJ,Anderson DE,Surichamorn W,Keaton LL,Tod ML

更新日期：1994-10-01 00:00:00

abstract：:Iodonium inhibition of the flavoenzymes neutrophil NADPH oxidase and cytochrome P450 reductase has been suggested to require reductive metabolism of the inhibitor to a phenyl radical. Inhibition would ultimately result from covalent attachment of phenyl radicals to either the flavin cofactor or adjacent amino acid sid...

journal_title：Molecular pharmacology

authors： O'Donnell VB,Smith GC,Jones OT

更新日期：1994-10-01 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：:Consequent to agonist exposure, many G protein-coupled receptors undergo sequestration or internalization. Results with receptors linked to adenylate cyclase, such as the beta 2-adrenergic receptor, or receptors linked to phospholipase C (PLC) have provided conflicting results regarding the role of second messenger-de...

journal_title：Molecular pharmacology

authors： Benya RV,Akeson M,Mrozinski J,Jensen RT,Battey JF

更新日期：1994-09-01 00:00:00

abstract：:Bufuralol 1'-hydroxylation is a prototypical reaction catalyzed by cytochrome P450 (P450) 2D6, an enzyme known to show debrisoquine/sparteine-type genetic polymorphism in humans. In the present study we further examined the roles of several human P450 enzymes, as well as P450 2D6, in the hydroxylation of (+/-)-bufural...

journal_title：Molecular pharmacology

authors： Yamazaki H,Guo Z,Persmark M,Mimura M,Inoue K,Guengerich FP,Shimada T

更新日期：1994-09-01 00:00:00

abstract：:The role of the cGMP-dependent protein kinase (cGK) and one of its major substrates, the vasodilator-stimulated phosphoprotein (VASP), in the regulation of a receptor-evoked calcium response was investigated. The human type I beta cGK was stably transfected in human embryonic kidney 293 cells and Swiss mouse 3T6 fibro...

journal_title：Molecular pharmacology

authors： Meinecke M,Geiger J,Butt E,Sandberg M,Jahnsen T,Chakraborty T,Walter U,Jarchau T,Lohmann SM

更新日期：1994-08-01 00:00:00

abstract：:Recently, inositol hexakisphosphate (phytic acid) was shown to bind to photoreceptor arrestin and block its interaction with rhodopsin. Such an interaction might predict that inositol polyphosphates could alter G protein-coupled receptor desensitization. To investigate the possible roles of higher inositol polyphospha...

journal_title：Molecular pharmacology

authors： Sasakawa N,Ferguson JE,Sharif M,Hanley MR

更新日期：1994-08-01 00:00:00

abstract：:The dopamine D3 receptor, although structurally similar to the dopamine D2 receptor, has 100-fold higher affinity for agonists such as dopamine and quinpirole, when these receptors are expressed in 293 cells. Additionally, the D3 receptor has generally lower affinity for several antagonists than does the D2 receptor. ...

journal_title：Molecular pharmacology

authors： Robinson SW,Jarvie KR,Caron MG

更新日期：1994-08-01 00:00:00

abstract：:Stimulatory effects of spermine at heteromeric N-methyl-D-aspartate (NMDA) receptors expressed from cloned subunits were studied by voltage-clamp recording in Xenopus oocytes. At NR1A/NR2B receptors, in the presence of a saturating concentration of glycine, the magnitude of spermine stimulation was dependent on the co...

journal_title：Molecular pharmacology

authors： Williams K

更新日期：1994-07-01 00:00:00

abstract：:Cytochrome P450 2C6 (CYP2C6) is a developmentally regulated, constitutively expressed form of rat liver microsomal cytochrome P450 that in the liver of adult male rats is induced to a limited extent by phenobarbital. The gene is not expressed at detectable levels in the lung, kidney, or brain. It is expressed and indu...

journal_title：Molecular pharmacology

authors： Shaw PM,Weiss MC,Adesnik M

更新日期：1994-07-01 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：:Guinea pig lung microsomes converted arachidonic acid (AA) to two classes of cytochrome P450 (P450)-dependent metabolites, 16- through 20-hydroxyeicosatetraenoic acids [(16-20)-OH-AA] and epoxyeicosatrienoic acids (EETs). The rate of formation of (16-20)-OH-AA was approximately 3-fold higher in microsomes from beta-na...

journal_title：Molecular pharmacology

authors： Knickle LC,Bend JR

更新日期：1994-06-01 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：:Effects of ethanol on the function of Ca(2+)-activated Cl- channels activated by G protein-coupled serotonin (5-hydroxytryptamine, (5-HT)1c) and muscarinic M1 cholinergic receptors were studied in Xenopus oocytes expressing mouse whole-brain mRNA. Ethanol (25-200 mM) inhibited currents evoked by both 5-HT and acetylch...

journal_title：Molecular pharmacology

authors： Sanna E,Dildy-Mayfield JE,Harris RA

更新日期：1994-05-01 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：:Cultured murine hepatoma 1c1c7 cells were treated with either the actin filament-disrupting drug cytochalasin D or the microtubule inhibitors colchicine and nocadazole (NOC) to assess the role of the cytoskeleton in the process of cytochrome P450 Cyp1a-1 induction. Indirect fluorescence analyses demonstrated that micr...

journal_title：Molecular pharmacology

authors： Schöller A,Hong NJ,Bischer P,Reiners JJ Jr

更新日期：1994-05-01 00:00:00

abstract：:We have investigated the effect of chronic flurazepam HCl treatment on the gamma-aminobutyric acid (GABA)A receptor complex in cultured mammalian cortical neurons. Chronic flurazepam (1-5 microM, for 1-10 days) treatment did not produce any changes in the morphological appearance or the cell protein content of cortica...

journal_title：Molecular pharmacology

authors： Hu XJ,Ticku MK

更新日期：1994-04-01 00:00:00

abstract：:Kinetics of the interactions between the neuromuscular blocker alcuronium, the specific muscarinic antagonist N-[methyl-3H] methyl scopolamine ([3H]NMS), and muscarinic receptors were investigated in homogenates of rat heart atria. Two effects of alcuronium on the binding of [3H]NMS could be distinguished. (a) Alcuron...

journal_title：Molecular pharmacology

authors： Proska J,Tucek S

更新日期：1994-04-01 00:00:00

abstract：:The ATP signaling mechanism in neuroblastoma x glioma hybrid NG108-15 cells differentiated by exposure to dibutyryl-cAMP was characterized. In cells loaded with fura-2, ATP rapidly raised the cytosolic Ca2+ concentration ([Ca2+]i); the magnitude of the rise was inversely proportional to the extracellular Na+ concentra...

journal_title：Molecular pharmacology

authors： Chueh SH,Hsu LS,Song SL

更新日期：1994-03-01 00:00:00

abstract：:The thiazolidinediones are a class of antidiabetic compounds that increase the sensitivity of target tissues to insulin. An earlier study has shown that these compounds enhance the insulin-stimulated differentiation of 3T3-L1 cells and up-regulate expression of differentiation-dependent genes. We have observed that th...

journal_title：Molecular pharmacology

authors： Harris PK,Kletzien RF

更新日期：1994-03-01 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：:Opioid drugs, such as morphine, and the endogenous opioid peptides, namely the enkephalins, endorphins, and dynorphins, exert a wide spectrum of physiological and behavioral effects, including effects on pain perception, mood, motor control, and autonomic functions. These effects are mediated via membrane-bound recept...

journal_title：Molecular pharmacology

authors： Raynor K,Kong H,Chen Y,Yasuda K,Yu L,Bell GI,Reisine T

更新日期：1994-02-01 00:00:00

abstract：:The hexapeptide [pGlu6,Pro9]substance P (SP)6-11, septide, has been shown to be an agonist as potent as SP in eliciting smooth muscle contraction in several in vitro preparations, while being a poor competitor of labeled SP binding. These results, as well as other pharmacological data, have suggested the existence of ...

journal_title：Molecular pharmacology

authors： Pradier L,Ménager J,Le Guern J,Bock MD,Heuillet E,Fardin V,Garret C,Doble A,Mayaux JF

更新日期：1994-02-01 00:00:00

abstract：:We examined the block of N-methyl-D-aspartate (NMDA) receptors by n-alkyl (straight chain) diamines and related monoamines and triamines using whole-cell voltage clamp recording of NMDA receptor currents in cultured rat hippocampal neurons and [3H] dizocilpine binding to rat forebrain homogenates. At -60 mV, the diami...

journal_title：Molecular pharmacology

authors： Subramaniam S,Donevan SD,Rogawski MA

更新日期：1994-01-01 00:00:00

abstract：:Recombinant rat D3 dopamine receptors heterologously expressed in Chinese hamster ovary (CHO) cells are functionally coupled to endogenous G proteins. The affinity of the receptors for agonists is regulated by guanine nucleotides in the same manner as that of other G protein-linked receptors. The magnitude of the chan...

journal_title：Molecular pharmacology

authors： Chio CL,Lajiness ME,Huff RM

更新日期：1994-01-01 00:00:00

abstract：:Prokaryotes produce a variety of toxins that affect genomic function of both eukaryotes and prokaryotes. The 375-base pair bacterial gene Streptoalloteichus hindustanus (Sh) ble encodes a small protein, Streptoalloteichus hindustanus bleomycin resistance protein (BRP), that inhibits in vitro DNA cleavage by the prokar...

journal_title：Molecular pharmacology

authors： Calmels TP,Mistry JS,Watkins SC,Robbins PD,McGuire R,Lazo JS

更新日期：1993-12-01 00:00:00

abstract：:Binding by 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) to the Ah receptor leads to transcriptional activation of several genes and a toxicity syndrome that includes tumor promotion, wasting, hormonal and immune system dysfunction, and death. Recent findings indicate that TCDD may also affect cardiac function. Here, we ...

journal_title：Molecular pharmacology

authors： Canga L,Paroli L,Blanck TJ,Silver RB,Rifkind AB

更新日期：1993-12-01 00:00:00

abstract：:Several novel phenylaminotetralins (PATs) cause functional changes in brain that are associated with binding to saturable, high affinity sites that are not identical to any known central nervous system receptor. These PATs were tested for their ability to cause receptor-mediated functional effects on tyrosine hydroxyl...

journal_title：Molecular pharmacology

authors： Booth RG,Wyrick SD,Baldessarini RJ,Kula NS,Myers AM,Mailman RB

更新日期：1993-12-01 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：:The verapamil-like arylazide (-)-[3H]azidopamil specifically photoaffinity labeled two low molecular mass polypeptides, with apparent molecular masses of 22 and 27 kDa, in the endoplasmic reticulum of guinea pig liver, kidney, adrenal gland, and lung. It was recently shown that the 22-kDa polypeptide binds the anti-is...

journal_title：Molecular pharmacology

authors： Moebius FF,Burrows GG,Hanner M,Schmid E,Striessnig J,Glossmann H

更新日期：1993-11-01 00:00:00

abstract：:Adenosine uptake via nucleoside transporters is inhibited when S49 and NG108-15 cell lines cells are exposed to ethanol. This inhibition leads to an accumulation of extracellular adenosine that binds to adenosine A2 receptors and increases cAMP production. Subsequently, there is a heterologous desensitization of recep...

journal_title：Molecular pharmacology

authors： Krauss SW,Ghirnikar RB,Diamond I,Gordon AS

更新日期：1993-11-01 00:00:00

abstract：:In the search for 1-[(2-hydroxyethoxy)methyl]-6-(phenylthio)thymine derivatives, we have found 6-benzyl-1-(ethoxymethyl)-5-isopropyl-uracil (MKC-442) to be a highly potent and selective inhibitor of human immunodeficiency virus type 1 (HIV-1) reverse transcriptase (RT). The IC50 value of MKC-442 for HIV-1 RT was 8 nM....

journal_title：Molecular pharmacology

authors： Yuasa S,Sadakata Y,Takashima H,Sekiya K,Inouye N,Ubasawa M,Baba M

更新日期：1993-10-01 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：:Two peptides, which have no significant homology with known protein structures, were obtained by microsequencing of a mu-opioid binding protein purified to homogeneity from bovine striatal membranes. Polyclonal antibodies generated against portions of these peptides immunoprecipitated up to 65% of radiolabeled purifie...

journal_title：Molecular pharmacology

authors： Gioannini TL,Yao YH,Hiller JM,Taylor LP,Simon EJ

更新日期：1993-10-01 00:00:00

abstract：:The carbonic anhydrase (CA) isozyme (IV) in microsomes is thought to have a dominant role in secretory processes. Using microsomes from bovine kidney and lung (which had the same activity), we have measured the Km and kcat for CO2 hydration and compared these numbers with those for CA I (red blood cells and gut), CA I...

journal_title：Molecular pharmacology

authors： Maren TH,Wynns GC,Wistrand PJ

更新日期：1993-10-01 00:00:00