abstract：:The inhibition effect of metal ions on beta amylase activity was studied. The inhibitor-binding constant (Ki) was determined by spectrophotometric and isothermal titration calorimetric (ITC) methods. The binding of calcium, magnesium and zinc ion as inhibitors at the active site of barley beta amylase was studied at p...

journal_title：Journal of enzyme inhibition and medicinal chemistry

authors： Dahot MU,Saboury AA,Moosavi-Movahedi AA

更新日期：2004-04-01 00:00:00

abstract：:Synthesis of a novel series of structurally related pyrazoloquinoline nucleosides is described. All the newly synthesized compounds were examined for their in vitro antiviral activity against herpes simplex type-1 as shown by two different bioassays, namely; crystal violet staining or the MTS tetrazolium dye measureme...

journal_title：Journal of enzyme inhibition and medicinal chemistry

authors： Bekhit AA,El-Sayed OA,Aboul-Enein HY,Siddiqui YM,Al-Ahdal MN

更新日期：2004-02-01 00:00:00

abstract：:Pig kidney diamine oxidase (DAO) and other semicarbazide-sensitive amine oxidases (SSAO) show clear substrate-inhibition kinetics and a reaction-scheme mechanism based on two substrate binding sites. We evaluated several reaction scheme mechanisms with a non-linear regression program (NCSS), estimating R2, the constan...

journal_title：Journal of enzyme inhibition and medicinal chemistry

authors： Ignesti G

更新日期：2003-12-01 00:00:00

abstract：:Adult male ICR mice were treated by intraperitoneal injection with 250 mg/kg of bodyweight of commercial malathion (a dose corresponding to 1/12 the LD50). After 6 h, acetylcholinesterase (AChE) activity in blood, liver, and six brain regions was determined. A statistically significant inhibition was observed in whole...

journal_title：Journal of enzyme inhibition and medicinal chemistry

authors： Banasik M,Stedeford T,Persad AS,Ueda K,Tanaka S,Muro-Cacho C,Harbison RD

更新日期：2003-12-01 00:00:00

abstract：:Protein phosphatases are signalling molecules that regulate a variety of fundamental cellular processes including cell growth, metabolism and apoptosis. The aim of this work was to correlate the cytotoxicity of pervanadate and okadaic acid on HL60 cells and their effect on the phosphatase obtained from these cells. Th...

journal_title：Journal of enzyme inhibition and medicinal chemistry

authors： Freire AC,Aoyama H,Haun M,Ferreira CV

更新日期：2003-10-01 00:00:00

abstract：:The galangal (the rhizome of Alpinia officinarum, Hance) is popular in Asia as a traditional herbal medicine. The present study reports that the galangal extract (GE) can potently inhibit fatty-acid synthase (FAS, E.C.2.3.1.85). The inhibition consists of both reversible inhibition with an IC50 value of 1.73 microg dr...

journal_title：Journal of enzyme inhibition and medicinal chemistry

authors： Li BH,Tian WX

更新日期：2003-08-01 00:00:00

abstract：:Lignostilbene-alpha,beta-dioxygenase (LSD, EC 1.13.11.43) is involved in oxidative cleavage of the central double bond of lignostilbene to form the corresponding aldehydes by a mechanism similar to those of 9-cis-epoxycarotenoid dioxygenase and beta-carotene 15,15'-dioxygenase, key enzymes in abscisic acid biosynthesi...

journal_title：Journal of enzyme inhibition and medicinal chemistry

authors： Han SY,Inoue H,Terada T,Kamoda S,Saburi Y,Sekimata K,Saito T,Kobayashi M,Shinozaki K,Yoshida S,Asami T

更新日期：2003-06-01 00:00:00

abstract：:The sequence of human urotensin II (UII) has been recently established as H-Glu-Thr-Pro-Asp-Cys-Phe-Trp-Lys-Tyr-Cys-Val-OH, and it has been reported that UII is the most potent mammalian vasoconstrictor peptide identified so far. A series of UII analogues was synthesized, and the contractile activity of each compound ...

journal_title：Journal of enzyme inhibition and medicinal chemistry

authors： Labarrère P,Chatenet D,Leprince J,Marionneau C,Loirand G,Tonon MC,Dubessy C,Scalbert E,Pfeiffer B,Renard P,Calas B,Pacaud P,Vaudry H

更新日期：2003-04-01 00:00:00

abstract：:The synthesis of 2-isopropenyl-2,3-dihydrobenzofuranic enantioisomers is described. Ortho-(2-hydroxy-3-methyl-but-3-enyl)phenol synthons are used as precursors to these structures. In vitro antitumor activity against a non-small-cell bronchopulmonary carcinoma line (NSCLC-N6) of these enantioisomers has been investiga...

journal_title：Journal of enzyme inhibition and medicinal chemistry

authors： Hélesbeux JJ,Duval O,Séraphin D,Roussakis C,Richomme P

更新日期：2003-04-01 00:00:00

abstract：:Initial velocity enzyme kinetics was used to study the inhibition mechanism of guanidine hydrochloride (Gdm.Cl) on catalytic activity of recombinant human protein disulfide isomerase (rhPDI) in protein folding. Reduced C125A recombinant human interleukin 2 (C125A rhIL-2), the substrate, was dissolved in 8 M Gdm.Cl bef...

journal_title：Journal of enzyme inhibition and medicinal chemistry

authors： Du C,Wolfe JL

更新日期：2003-02-01 00:00:00

abstract：:The reactivity of [1,2,3]triazolo[1,5-a]pyridines 1 is described. Triazolopyridines react with electrophiles in two contrasting ways, giving 3-substituted triazolopyridines 2, or products 3, resulting from triazolo ring opening with loss of molecular nitrogen. The triazolopyridines can be lithiated at -40 degrees C by...

journal_title：Journal of enzyme inhibition and medicinal chemistry

authors： Abarca-González B

更新日期：2002-12-01 00:00:00

abstract：:The synthesis of 1,2-dioxolane derivatives in two different acetophenone series, as simplified models of natural coumarins is described. 2-Acetyl-3-acetoxy-4-(3-hydroperoxy-3-methylbut-1-enyl)phenyl acetate and 2-acetyl-5-acetoxy4-(3-hydroperoxy-3-methylbut-1-enyl) phenyl acetate synthons are used as precursors to the...

journal_title：Journal of enzyme inhibition and medicinal chemistry

authors： Helesbeux JJ,Peyronnet D,Labaïed M,Grellier P,Frappier F,Seraphin D,Richomme P,Duval O

更新日期：2002-12-01 00:00:00

abstract：:Reaction of thiophosgene with 4-aminomethyl-benzenesulfonamide afforded 4-isothiocyanatomethyl-benzenesulfonamide, which by reaction with amines, amino acids and oligopeptides, lead to a series of new sulfonamides incorporating a 4-sulfamoylphenylmethylthiourea scaffold. These new thioureas showed strong affinities to...

journal_title：Journal of enzyme inhibition and medicinal chemistry

authors： Casini A,Scozzafava A,Mincione F,Menabuoni L,Supuran CT

更新日期：2002-10-01 00:00:00

abstract：:The present study investigated the ability of the arginine analog L-NAME (N(omega)-Nitro-L-arginine methyl ester) to modulate the activity of arginase. L-NAME inhibited the activity of arginase in lysates from rat colon cancer cells and liver. It also inhibited the arginase activity of tumor cells in culture. Furtherm...

journal_title：Journal of enzyme inhibition and medicinal chemistry

authors： Reisser D,Onier-Cherix N,Jeannin JF

更新日期：2002-08-01 00:00:00

abstract：:Exposure of the N-methoxycarbonyl-bicyclic-keto-acid 5 (improved preparation) to the Barnick beta-keto-acid synthesis yielded an aqueous solution of the sodium salts of the beta-keto-acids 26 and 27 which on heating at 60-65 degrees C furnished the N-methoxycarbonyl-tricyclic-ketone 9 (55%) plus the hydroxy-ketone 28 ...

journal_title：Journal of enzyme inhibition and medicinal chemistry

authors： Bowman MA,Bowman RE,Davies RV,Haran G,Harris PJ,Smith HJ,Steele RW,Walker N,Whiting K

更新日期：2002-06-01 00:00:00

abstract：:The purpose of this study was the evaluation of the xanthine oxidase (XO) inhibition produced by some synthetic 2-styrylchromones. Ten polyhydroxylated derivatives with several substitution patterns were synthesised, and these and a positive control, allopurinol, were tested for their effects on XO activity by measuri...

journal_title：Journal of enzyme inhibition and medicinal chemistry

authors： Fernandes E,Carvalho F,Silva AM,Santos CM,Pinto DC,Cavaleiro JA,Bastos Mde L

更新日期：2002-02-01 00:00:00