Structure-activity relationships in the ansamycins. Molecular structure and activity of 3-carbomethoxy rifamycin S.

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：: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：:All five (m1-m5) muscarinic receptors are sensitive to allosteric regulation, but gallamine is considerably more potent in slowing the dissociation of N-[3H]methylscopolamine (NMS) from the m2 subtype than from the m3 or m5 subtypes. To study the structural basis for the preference of gallamine for the m2 subtype, we ...

journal_title：Molecular pharmacology

authors： Ellis J,Seidenberg M,Brann MR

更新日期：1993-09-01 00:00:00

abstract：:Fusion proteins were generated between the human 5-hydroxytryptamine (5-HT)(1A) receptor and both wild-type (Cys(351)) and pertussis toxin-resistant (Gly(351) and Ile(351)) forms of G(i1). These were expressed stably. Pertussis toxin treatment substantially reduced basal high-affinity GTPase activity in clones express...

journal_title：Molecular pharmacology

authors： Kellett E,Carr IC,Milligan G

更新日期：1999-10-01 00:00:00

abstract：:The c-Myc (MYC) transcription factor is a major cancer driver and a well-validated therapeutic target. However, directly targeting MYC has been challenging. Thus, identifying proteins that interact with and regulate MYC may provide alternative strategies to inhibit its oncogenic activity. In this study, we report the ...

journal_title：Molecular pharmacology

authors： Mo X,Qi Q,Ivanov AA,Niu Q,Luo Y,Havel J,Goetze R,Bell S,Moreno CS,Cooper LA,Johns MA,Khuri FR,Du Y,Fu H

更新日期：2017-04-01 00:00:00

abstract：:The pharmacological preservation of bone in the ovariectomized rat by estrogen, selective estrogen receptor modulators (SERMs), and bisphosphonates has been well described. However, comprehensive molecular analysis of the effects of these pharmacologically diverse antiresorptive agents on gene expression in bone has n...

journal_title：Molecular pharmacology

authors： Helvering LM,Liu R,Kulkarni NH,Wei T,Chen P,Huang S,Lawrence F,Halladay DL,Miles RR,Ambrose EM,Sato M,Ma YL,Frolik CA,Dow ER,Bryant HU,Onyia JE

更新日期：2005-11-01 00:00:00

abstract：:The heptadecapeptide orphanin FQ (OFQ) has been identified as the endogenous ligand for a G protein-coupled receptor (OFQ-R), which, despite its high degree of sequence similarity to opioid receptors, fails to bind opioid ligands. We developed two radioligands for the OFQ-R: a tritiated native OFQ peptide ([3H]OFQ) an...

journal_title：Molecular pharmacology

authors： Ardati A,Henningsen RA,Higelin J,Reinscheid RK,Civelli O,Monsma FJ Jr

更新日期：1997-05-01 00:00:00

abstract：:The effect of cyanomorpholinyldoxorubicin, morpholinyldoxorubicin, doxorubicin, and Actinomycin D were studied on purified mouse leukemia (L1210) DNA topoisomerases I and II. DNA unwinding and cross-linking were also studied. It was found that 1) morpholinyldoxorubicin, cyanomorpholinyldoxorubicin, and Actinomycin D (...

journal_title：Molecular pharmacology

authors： Wassermann K,Markovits J,Jaxel C,Capranico G,Kohn KW,Pommier Y

更新日期：1990-07-01 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：:Metallothioneins (MTs) are low molecular weight, thiol-rich, metal-binding proteins. Auranofin (AF) is a gold compound active in the treatment of rheumatoid arthritis. The effects of AF on regulation of MT gene expression in Chinese hamster ovary cells were studied. AF-resistant cells accumulated substantial amounts o...

journal_title：Molecular pharmacology

authors： Monia BP,Butt TR,Mirabelli CK,Ecker DJ,Sternberg E,Crooke ST

更新日期：1987-01-01 00:00:00

abstract：:Herpes simplex virus type 1 (HSV-1) encodes a thymidine kinase (TK) that markedly differs from mammalian nucleoside kinases in terms of substrate specificity. It recognizes both pyrimidine 2'-deoxynucleosides and a variety of purine nucleoside analogs. Based on a computer modeling study and in an attempt to modify thi...

journal_title：Molecular pharmacology

authors： Degrève B,Esnouf R,De Clercq E,Balzarini J

更新日期：2000-12-01 00:00:00

abstract：:The epithelial sodium channel (ENaC) is believed to represent the rate-limiting step for sodium absorption in the renal collecting duct. Consequently, ENaC is a central effector affecting systemic blood volume and pressure. Sodium and water transport are dysregulated in diabetes mellitus. Peroxisome proliferator-activ...

journal_title：Molecular pharmacology

authors： Pavlov TS,Levchenko V,Karpushev AV,Vandewalle A,Staruschenko A

更新日期：2009-12-01 00:00:00

abstract：:Pharmacological studies suggest a role for CB1 cannabinoid receptors (CB1R) in regulating neurogenesis in the adult brain. To investigate this possibility, we measured neurogenesis by intraperitoneal injection of bromodeoxyuridine (BrdU), which labels newborn neurons, in wild-type and CB1R-knockout (CB1R-KO) mice. CB1...

journal_title：Molecular pharmacology

authors： Jin K,Xie L,Kim SH,Parmentier-Batteur S,Sun Y,Mao XO,Childs J,Greenberg DA

更新日期：2004-08-01 00:00:00

abstract：:Combining chemotherapeutics to treat malignant tumors has been shown to be effective in preventing drug resistance, tumor recurrence, and reducing tumor size. We modeled combination drug therapy in PC-3 human prostate cancer cells using mixture design response surface methodology (MDRSM), a statistical technique desig...

journal_title：Molecular pharmacology

authors： Oblad R,Doughty H,Lawson J,Christensen M,Kenealey J

更新日期：2018-08-01 00:00:00

abstract：:The ADP-sensitive and K+ -sensitive phosphorylated forms of Na,K-ATPase (E1P and E2P, respectively) are believed to be the main phosphorylated intermediates of Na,K-ATPase. In the presence of 100 mM Na+, E2P is the major component of the phosphorylated form in all native Na,K-ATPase preparations known, including the m...

journal_title：Molecular pharmacology

authors： Yoda A,Yoda S

更新日期：1982-11-01 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：:The powerful analgesic effects of opioid drugs have captivated the interest of physicians and scientists for millennia, and the ability of opioid drugs to produce serious undesired effects has been recognized for a similar period of time (Kieffer and Evans, 2009). Many of these develop progressively with prolonged or ...

journal_title：Molecular pharmacology

authors： Jullié D,Gondin AB,von Zastrow M,Canals M

更新日期：2020-10-01 00:00:00

abstract：:In this work, we evaluate the structural differences of transmembrane helix 3 in rhodopsin and the 5-hydroxytryptamine 1A (5-HT1A) receptor caused by their different amino acid sequence. Molecular dynamics simulations of helix 3 in the 5-HT1A receptor tends to bend toward helix 5, in sharp contrast to helix 3 in rhodo...

journal_title：Molecular pharmacology

authors： López-Rodríguez ML,Vicente B,Deupi X,Barrondo S,Olivella M,Morcillo MJ,Behamú B,Ballesteros JA,Sallés J,Pardo L

更新日期：2002-07-01 00:00:00

abstract：:The availability of high-affinity agonists for peroxisome proliferator-activated receptor-beta/delta (PPARbeta/delta) has led to significant advances in our understanding of the functional role of PPARbeta/delta. In this study, a new PPARbeta/delta antagonist, 4-chloro-N-(2-{[5-trifluoromethyl)-2-pyridyl]sulfonyl}ethy...

journal_title：Molecular pharmacology

authors： Palkar PS,Borland MG,Naruhn S,Ferry CH,Lee C,Sk UH,Sharma AK,Amin S,Murray IA,Anderson CR,Perdew GH,Gonzalez FJ,Müller R,Peters JM

更新日期：2010-09-01 00:00:00

abstract：:We tested several histamine H(1) receptor (H(1)R) and antagonists for their differences in agonists binding affinities between human and guinea pig H(1)Rs transiently expressed in African green monkey kidney (COS-7) cells. Especially, the bivalent agonist histaprodifen-histamine dimer (HP-HA) shows a higher affinity f...

journal_title：Molecular pharmacology

authors： Bruysters M,Jongejan A,Gillard M,van de Manakker F,Bakker RA,Chatelain P,Leurs R

更新日期：2005-04-01 00:00:00

abstract：:G protein activation by different mu-selective opioid agonists was examined in rat thalamus, SK-N-SH cells, and mu-opioid receptor-transfected mMOR-CHO cells using agonist-stimulated guanosine-5'-O-(gamma-thio)-triphosphate ([35S]GTP gamma S) binding to membranes in the presence of excess GDP. [D-Ala2, N-MePhe4, Gly5-...

journal_title：Molecular pharmacology

authors： Selley DE,Sim LJ,Xiao R,Liu Q,Childers SR

更新日期：1997-01-01 00:00:00

abstract：:Antibodies against synthetic peptides of the D2 dopamine receptor were used, in combination with photoaffinity labeling, to localize the region of ligand binding in the receptor. Specific antibodies to peptide sequences 221-234 and 259-272 and to the carboxyl-terminal peptide 402-415, all corresponding to cytoplasmic ...

journal_title：Molecular pharmacology

authors： David C,Fuchs S

更新日期：1991-11-01 00:00:00

abstract：:Nicotine biotransformation affects the smoking habits of addicted individuals and therefore their health risk. Using an improved analytical method, we have discovered that the human UDP-glucuronosyltransferase (UGT) 2B10, a liver enzyme previously unknown to conjugate nicotine or exhibit considerable activity toward a...

journal_title：Molecular pharmacology

authors： Kaivosaari S,Toivonen P,Hesse LM,Koskinen M,Court MH,Finel M

更新日期：2007-09-01 00:00:00

abstract：:GABAA receptors are predominantly composed of alphabetagamma and alphabetadelta isoforms in the brain. It has been proposed that alphabetagamma receptors mediate phasic inhibition, whereas alphabetadelta receptors mediate tonic inhibition. Propofol (2,6-di-isopropylphenol), a widely used anesthetic drug, exerts its ef...

journal_title：Molecular pharmacology

authors： Feng HJ,Macdonald RL

更新日期：2004-12-01 00:00:00

abstract：:In the present study, we have elucidated the functional characteristics and mechanism of action of methaqualone (2-methyl-3-o-tolyl-4(3H)-quinazolinone, Quaalude), an infamous sedative-hypnotic and recreational drug from the 1960s-1970s. Methaqualone was demonstrated to be a positive allosteric modulator at human α1,2...

journal_title：Molecular pharmacology

authors： Hammer H,Bader BM,Ehnert C,Bundgaard C,Bunch L,Hoestgaard-Jensen K,Schroeder OH,Bastlund JF,Gramowski-Voß A,Jensen AA

更新日期：2015-08-01 00:00:00

abstract：:Controlled inhibition of brain acetyl- and butyrylcholinesterases (AChE and BChE, respectively) and of monoamine oxidase-B (MAO-B) may slow neurodegeneration in Alzheimer's and Parkinson's diseases. It was postulated that certain carbamate esters would inhibit AChE and BChE with the concomitant release in the brain of...

journal_title：Molecular pharmacology

authors： Groner E,Ashani Y,Schorer-Apelbaum D,Sterling J,Herzig Y,Weinstock M

更新日期：2007-06-01 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：:Activators of G protein signaling (AGS), initially discovered in the search for receptor-independent activators of G protein signaling, define a broad panel of biologic regulators that influence signal transfer from receptor to G-protein, guanine nucleotide binding and hydrolysis, G protein subunit interactions, and/o...

journal_title：Molecular pharmacology

authors： Blumer JB,Lanier SM

更新日期：2014-03-01 00:00:00

abstract：:Regulation of beta2-adrenergic receptor (beta2AR) levels by glucocorticoids is a physiologically important mechanism for altering beta2AR responsiveness. Glucocorticoids increase beta2AR density by increasing the rate of beta2AR gene transcription, but the cis-elements involved have not been well characterized. We now...

journal_title：Molecular pharmacology

authors： Cornett LE,Hiller FC,Jacobi SE,Cao W,McGraw DW

更新日期：1998-12-01 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