Abstract:
:Melatonin (N-acetyl-5-methoxytryptamine) is the chief secretory product of the pineal gland and synthesized enzymatically from serotonin (5-hydroxytryptamine). These indoleamine derivatives play an important role in the prevention of oxidative damage. In the present study, DMPD radical scavenging and cupric ion (Cu(2+)) reducing ability of melatonin and serotonin as trolox equivalent antioxidant activity (TEAC) was investigated. Melatonin and serotonin demonstrated 73.5 and 127.4 microg/mL trolox equivalent DMPD( radical+) scavenging activity at the concentration of 100 microg/mL. Also, at the same concentration, melatonin and serotonin showed 14.41 and 116.09 microg/mL trolox equivalent cupric ion (Cu(2+)) reducing ability. These results showed that melatonin and serotonin had marked DMPD(radical+) radical scavenging and cupric ions (Cu(2+)) reducing ability. Especially, serotonin had higher DMPD radical scavenging and cupric ions (Cu(2+)) reducing activity than melatonin because of its phenolic group.
journal_name
J Enzyme Inhib Med Chemjournal_title
Journal of enzyme inhibition and medicinal chemistryauthors
Gulçin Idoi
10.1080/14756360701626223subject
Has Abstractpub_date
2008-12-01 00:00:00pages
871-6issue
6eissn
1475-6366issn
1475-6374pii
793644130journal_volume
23pub_type
杂志文章abstract::Di(2-ethylhexyl) phthalate (DEHP) is the most widely plasticizer for polyvinyl chloride (PVC) that is used in plastic tubes, in medical and paramedical devices as well as in food storage packaging. The toxicological profile of DEHP has been evaluated in a number of experimental animal models and has been extensively d...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.1080/14756360802205059
更新日期:2008-10-01 00:00:00
abstract::A series of quinazoline derivatives with benzylidene hydrazine carboxamide were designed and synthesised as EGFR inhibitors. Most compounds exhibited exceptional anti-proliferative activity against A549, HepG2, MCF-7 and H1975 cells. Furthermore, six compounds demonstrated excellent inhibition activity against EGFRWT ...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.1080/14756366.2018.1518957
更新日期:2019-12-01 00:00:00
abstract::In the presence of the anionic surfactant sodium n-dodecyl sulphate (SDS), horseradish peroxidase (HRP) undergoes a deactivation process. Suicide inactivation of horseradish peroxidase by hydrogen peroxide(3 mM) was monitored by the absorbance change in product formation in the catalytic reaction cycle. The progress c...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.1080/14756360500042846
更新日期:2005-06-01 00:00:00
abstract::Two carbonic anhydrase IX (CA IX) inhibitors were radiolabeled with (18)F, and evaluated for imaging CA IX expression. Despite good affinity for CA IX and excellent plasma stability, uptake of both tracers in CA IX-expressing HT-29 tumor xenografts in mice was low. (18)F-FEC accumulated predominately in the liver and ...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.3109/14756366.2013.773994
更新日期:2014-04-01 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
pub_type: 杂志文章
doi:10.1080/1475636031000080207
更新日期:2003-06-01 00:00:00
abstract::Corticosteroids are anti-inflammatory drugs that are similar to the natural corticosteroid hormones produced by the cortex of the adrenal glands. The objective of this study was to scrutinize effects of some corticosteroids on glucose-6-phosphate dehydrogenase (G6PD) and some antioxidant enzymes. Initially, G6PD was p...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.1080/14756360412331295026
更新日期:2005-02-01 00:00:00
abstract::Isocitrate dehydrogenase (IDH) gene from Staphylococcus aureus ATCC12600 was cloned, sequenced and characterized (HM067707). PknB site was observed in the active site of IDH; thus, it was predicted as IDH may be regulated by phosphorylation. Therefore, in this study, PknB, alkaline phosphatase III (SAOV 2675) and IDH ...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.3109/14756366.2014.959945
更新日期:2015-01-01 00:00:00
abstract::Starting from a simple general reaction mechanism of activation of aspartic proteinases zymogens involving a uni- and a bimolecular simultaneous activation route and a reversible inhibition step, the time course equation of the zymogen, inhibitor and activated enzyme concentrations have been derived. Likewise, express...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.1080/14756360601114601
更新日期:2007-04-01 00:00:00
abstract::Several (thiazol-2-yl)hydrazone derivatives from 2-, 3- and 4-acetylpyridine were synthesized and tested against human monoamine oxidase (hMAO) A and B enzymes. Most of them had an inhibitory effect in the low micromolar/high nanomolar range, being derivatives of 4-acetylpyridine selective hMAO-B inhibitors also at lo...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.3109/14756366.2014.987138
更新日期:2015-12-01 00:00:00
abstract::Indoleamine 2,3-dioxygenase 1 (IDO1) activity links to immune escape of cancers. Inhibition of IDO1 provides a new approach for cancer treatment. Most clinical IDO1 drugs show marginal efficacy as single agents. On basis of molecular docking and pharmacophore modelling, a novel inhibitor Roxyl-WL was discovered with a...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.1080/14756366.2018.1471688
更新日期:2018-12-01 00:00:00
abstract::Tetrahydrocannabinol and other mixed cannabinoid (CB) receptors CB(1)/CB(2) receptor agonists are well established to elicit antinociceptive effects and psychomimetic actions, however, their potential for abuse have dampened enthusiasm for their therapeutic development. In an effort to refine a semi-rigid structural f...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.3109/14756366.2011.645241
更新日期:2013-06-01 00:00:00
abstract::The activation of the β-class carbonic anhydrases (CAs, EC 4.2.1.1) from the bacteria Brucella suis and Francisella tularensis with amine and amino acids was investigated. BsuCA 1 was sensitive to activation with amino acids and amines, whereas FtuCA was not. The most effective BsuCA 1 activators were L-adrenaline and...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.1080/14756366.2019.1630617
更新日期:2019-12-01 00:00:00
abstract::Phthalates, used in medical devices (MDs), have been identified as reproductive and developmental toxicants. Their toxicity varies somewhat depending on the specific phthalate and is in part linked to the activation of Peroxisome Proliferating-Activated Receptors (PPARs). So, the use of MDs containing targeted phthala...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.3109/14756366.2015.1037748
更新日期:2016-01-01 00:00:00
abstract::The acetylcholinesterase inhibitory and/or antitumour activities of amino-, thio- and ester-derivatives of avarol selected were evaluated for the first time at in vitro conditions. Avarol-3',4'-dithioglycol (1) and avarol-4'-(3)mercaptopropionic acid (3) were shown to be the best inhibitors of the enzyme tested (0.50 ...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章,收录出版
doi:10.3109/14756366.2015.1057724
更新日期:2016-08-01 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
pub_type: 杂志文章
doi:10.1080/14756360310001650219
更新日期:2004-02-01 00:00:00
abstract::Previous investigations into the binding of substrates/cofactors to the PAH active site have only concentrated on Phe, thienylalanine and BH(4). This is the first reported investigation to model aliphatic thioether amino acid substrates to PAH. The clearance of the thioether substrates (4.82-79.09% of Phe) in the rat ...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.1080/14756360701810280
更新日期:2008-12-01 00:00:00
abstract::The present study describes the synthesis of a series of new 4-aminoquinoline-derived thiazolidines and evaluation of their antimalarial activity against a NF-54 strain of Plasmodium falciparum in vitro and N-67 strain of Plasmodium yoelii in vivo. Among the series, two compounds, 2-(4-chloro-phenyl)-thiazolidine-4-ca...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.3109/14756366.2012.666537
更新日期:2013-06-01 00:00:00
abstract::New ureido benzenesulfonamides incorporating a GABA moiety as a linker between the ureido and the sulfonamide functionalities were synthesized and their inhibition potency determined against both the predominant cytosolic (hCA I and II) and the transmembrane tumor-associated (hCA IX and XII) isoforms of the metalloenz...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.3109/14756366.2015.1014477
更新日期:2016-01-01 00:00:00
abstract::The inhibition of neuraminidase from Clostridium chauvoei (jakari strain) with partially purified methanolic extracts of some plants used in Ethnopharmacological practice was evaluated. Extracts of two medicinal plants, Tamarindus indicus and Combretum fragrans at 100-1000 microg/ml, both significantly reduced the act...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.1080/14756360409162447
更新日期:2004-08-01 00:00:00
abstract::The bromodomain and extra-terminal (BET) bromodomains, particularly BRD4, have been identified as promising therapeutic targets in the treatment of many human disorders such as cancer, inflammation, obesity, and cardiovascular disease. Recently, the discovery of novel BRD4 inhibitors has garnered substantial interest....
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.1080/14756366.2019.1587417
更新日期:2019-12-01 00:00:00
abstract::A large number of novel secondary sulfonamides based on the open saccharin scaffold were synthesized and evaluated as selective inhibitors of four different isoforms of human carbonic anhydrase (hCA I, II, IX and XII, EC 4.2.1.1). They were obtained by reductive ring opening of the newly synthesized N-alkylated saccha...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.1080/14756366.2016.1235040
更新日期:2017-12-01 00:00:00
abstract::New coumaryl-carboxamide derivatives with the thiourea moiety as a linker between the alkyl chains and/or the heterocycle nucleus were synthesized and their inhibitory activity against the human carbonic anhydrase (hCA) isoforms hCA I, II, VII and IX were evaluated. While the hCA I, II and VII isoforms were not inhibi...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.1080/14756366.2017.1354857
更新日期:2017-12-01 00:00:00
abstract::This study reports on a preliminary structure-activity relationship exploration of 4-aryliden-2-methyloxazol-5(4H)-one-based compounds as MAGL/FAAH inhibitors. Our results highlight that this scaffold may serve for the development of selective MAGL inhibitors. A 69-fold selectivity against MAGL over FAAH was achieved ...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.3109/14756366.2015.1010530
更新日期:2016-01-01 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
pub_type: 杂志文章
doi:10.1080/14756360290032958
更新日期:2002-06-01 00:00:00
abstract::Human neutrophil elastase (HNE) is an important target for the development of novel and selective inhibitors to treat inflammatory diseases, especially pulmonary pathologies. Here, we report the synthesis, structure-activity relationship analysis, and biological evaluation of a new series of HNE inhibitors with an iso...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.1080/14756366.2017.1326915
更新日期:2017-12-01 00:00:00
abstract::Enzyme inhibition by fullerene derivatives has attracted much attention. In this communication, effects of two water-solube fullerene derivatives, fullerol and trimalonic acid C60 (TMA C60) on polymerase chain reaction (PCR) were investigated by using PCR of beta-actin cDNA derived from HeLa cells as an experimental m...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.1080/14756360601114270
更新日期:2007-06-01 00:00:00
abstract::In our endeavour towards the development of effective anticancer therapeutics, a novel series of isoxazole-piperazine hybrids were synthesized and evaluated for their cytotoxic activities against human liver (Huh7 and Mahlavu) and breast (MCF-7) cancer cell lines. Within series, compounds 5l-o showed the most potent c...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.1080/14756366.2018.1504041
更新日期:2018-12-01 00:00:00
abstract::Cobalt (II), copper (II), nickel (II) and zinc (II) complexes with 2-hydroxy-1-naphthaldehyde derived N-substituted sulfonamides have been synthesized and the nature of bonding and structure of compounds have been deduced from physical, analytical and spectral (IR, (1)H NMR, (13)C NMR, Mass and electronic) data. An oc...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.1080/14756360701474913
更新日期:2008-04-01 00:00:00
abstract::Arylsulfatase B (ASB) hydrolyzes the desulfation of N-acetylgalactosamine-4-sulfate at the non-reducing terminal of glycosaminoglycans. This enzyme activity was found to be elevated in mice schistosomiasis. In the present study, the catalytic and immunological properties of purified ASB from the liver of Schistosoma-i...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.1080/14756360500424036
更新日期:2006-02-01 00:00:00
abstract::Glutathione transferase P1-1 is over expressed in some cancer cells and contributes to detoxification of anticancer drugs, leading to drug-resistant tumors. The inhibition of human recombinant GSTP1-1 by natural plant products was investigated using 10 compounds isolated from plants indigenous to Southern and Central ...
journal_title:Journal of enzyme inhibition and medicinal chemistry
pub_type: 杂志文章
doi:10.3109/14756366.2010.526769
更新日期:2011-08-01 00:00:00