Oxidative DNA damage in vivo: relationship to age, plasma antioxidants, drug metabolism, glutathione-S-transferase activity and urinary creatinine excretion.

abstract：:Levels of certain antioxidants namely reduced glutathione (GSH), ascorbic acid (Vit C), alpha-tocopherol (Vit E) and antioxidant enzymes, superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx) and glutathione reductase (GR) were compared in monkey and rat brain microvessels which constitute the blood...

journal_title：Free radical research

authors： Shukla A,Dikshit M,Srimal RC

更新日期：1995-04-01 00:00:00

abstract：:The synproportionation reaction between ferryl leghemoglobin and oxyleghemoglobin does not occur, at least under conditions where this process could be clearly demonstrated with myoglobin and hemoglobin. In contrast, a cross synproportionation can occur between oxyleghemoglobin and ferryl myoglobin or between ferryl l...

journal_title：Free radical research

authors： Mathieu C,Swaraj K,Davies MJ,Trinchant JC,Puppo A

更新日期：1997-08-01 00:00:00

abstract：:Oxidative stress may initiate lipid peroxidation that generates ethane. Ethane, at low concentrations, is eliminated by pulmonary exhalation. Previous methods have not allowed frequent sampling, thus ethane kinetics has not been studied in man. A validated method over the range 3.8-100,000 ppb with a limit of quantita...

journal_title：Free radical research

authors： Dale O,Bergum H,Lund T,Nilsen T,Aadahl P,Stenseth R

更新日期：2003-08-01 00:00:00

abstract：:Ribonucleotide reductases catalyze the irreversible reductive formation of 2'-deoxyribonucleotides required for DNA replication and cell proliferation, and a radical mechanism was assumed to be involved in this reaction. In order to search for a radical in the aerobic manganese ribonucleotide reductase (Mn-RRase) by e...

journal_title：Free radical research

authors： Griepenburg U,Lassmann G,Auling G

更新日期：1996-06-01 00:00:00

abstract：:The cyanidin-3-O-beta-glucopyranoside (C-3-G) antioxidant capacity towards reactive oxygen species (ROS)-mediated damages was assessed in tissue and cells submitted to increased oxidative stress. In the isolated ischemic and reperfused rat heart, 10 or 30 degreesM C-3-G protected from both lipid peroxidation (66.7 and...

journal_title：Free radical research

authors： Amorini AM,Lazzarino G,Galvano F,Fazzina G,Tavazzi B,Galvano G

更新日期：2003-04-01 00:00:00

abstract：:The oxidized intermediates generated upon exposure of Aspergillus niger catalase to hydrogen peroxide and superoxide radical fluxes were examined with UV-visible spectrophotometry. Hydrogen peroxide and superoxide radical were generated by means of glucose/glucose oxidase and xanthine/xanthine oxidase systems. Serial ...

journal_title：Free radical research

authors： Lardinois OM,Rouxhet PG

更新日期：1994-01-01 00:00:00

abstract：:Oxidative stress has been consistently linked to ageing-related neurodegenerative diseases. Neurodegenerative diseases are characterized by progressive dysfunction and death of neurons. Oxidative stress is associated with dysfunction of the mitochondria and endoplasmic reticulum, inducing apoptosis and protein misfold...

journal_title：Free radical research

authors： Ghosh N,Ghosh R,Mandal SC

更新日期：2011-08-01 00:00:00

abstract：:Aging is a multifold process affected by many genes and thus many biochemical pathways. This conclusion is underscored by the failure to find simple central controls for the aging process during the 20th Century. This situation poses a fundamental challenge to anti-aging medicine: how to develop effective therapies fo...

journal_title：Free radical research

authors： Rose MR,Mueller LD,Long AD

更新日期：2002-12-01 00:00:00

abstract：:Several papers have claimed that mitochondria contain nitric oxide synthase (NOS) and make nitric oxide (NO*) in amounts sufficient to affect mitochondrial respiration. However, we found that the addition of L-arginine or the NOS inhibitor L-NMMA to intact rat liver mitochondria did not have any effect on the respirat...

journal_title：Free radical research

authors： Tay YM,Lim KS,Sheu FS,Jenner A,Whiteman M,Wong KP,Halliwell B

更新日期：2004-06-01 00:00:00

abstract：PURPOSE:Ionizing radiation generates free radicals and reactive oxygen species that induce DNA damage in vivo. This study aimed to determine the relationship between serum reactive oxygen metabolite (ROM) levels and skin reaction after irradiation in a rat model. METHODS AND MATERIALS:I. Female Wistar rats were classi...

journal_title：Free radical research

authors： Nomiya T,Kaneko T,Goto J,Harada M,Akamatsu H,Hagiwara Y,Ota I,Nemoto K

更新日期：2014-05-01 00:00:00

abstract：:Recent findings have suggested that oxidative damage might contribute to the cytotoxicity and carcinogenicity of aflatoxin B1 (AFB1). Salvia miltiorrhiza (Sm), a herbal plant that has been used extensively in traditional Chinese medicine for treating cardiovascular and liver diseases, is believed to have some antioxid...

journal_title：Free radical research

authors： Liu J,Yang CF,Lee BL,Shen HM,Ang SG,Ong CN

更新日期：1999-12-01 00:00:00

abstract：:Thioredoxin-1 (TRX) is a redox-active protein with anti-inflammatory effects. This study investigated the optimal delivery method and the mechanisms of recombinant human TRX (rhTRX) to suppress neutrophil recruitment in a rat bleomycin (BLM)-induced sustained acute lung injury model. In male Wister rats intratracheall...

journal_title：Free radical research

authors： Nakamura T,Hoshino Y,Yamada A,Teratani A,Furukawa S,Okuyama H,Ueda S,Wada H,Yodoi J,Nakamura H

更新日期：2007-10-01 00:00:00

abstract：:The aim of this study was to investigate the effect of HDL oxidation on PON1 paraoxonase activity. Also, we were interested in investigating the mechanism by which PON1 could be inactivated and the correlation between its enzymatic activity and the antioxidant properties of HDL. Three different oxidation systems were ...

journal_title：Free radical research

authors： Jaouad L,Milochevitch C,Khalil A

更新日期：2003-01-01 00:00:00

abstract：:Pyruvate is a well-known scavenger of hydrogen peroxide (H2O2). In addition, it scavenges superoxide radical (O2.-). However, evidence on its intracellular antioxidant function is meager at present. Hence, we have examined the effectiveness of this metabolite and its ethyl ester against intracellular oxidative damage ...

journal_title：Free radical research

authors： Varma SD,Devamanoharan PS,Ali AH

更新日期：1998-02-01 00:00:00

abstract：:Oxidized low density lipoprotein (LDL) has a major impact in the development of atherosclerosis. Risk for oxidative modification of LDL is usually determined indirectly by measuring the capability of LDL to resist radical insult. We compared three different methods quantifying the antioxidative capacity of LDL ex vivo...

journal_title：Free radical research

authors： Malminiemi K,Palomäki A,Malminiemi O

更新日期：2000-11-01 00:00:00

abstract：:The antioxidative activity of hydroxylamines was evaluated for the oxidation of tetralin at 61 degrees C and linoleic acid micelles in an aqueous dispersion at 37 degrees C, induced by an azo initiator. The antioxidative efficacy of the hydroxylamines for the oxidation of tetralin was smaller than that of alpha-tocoph...

journal_title：Free radical research

authors： Nishiyama T,Tamekuni H,Tachibana T,Kitamura H,Saito S

更新日期：2001-12-01 00:00:00

abstract：:Previous studies have shown that glucose-6-phosphate dehydrogenase (G6PD)-deficient cells are under increased oxidative stress and undergo premature cellular senescence. The present study demonstrates that G6PD-deficient cells cultured under 3% oxygen concentration had an extended replicative lifespan, as compared wit...

journal_title：Free radical research

authors： Ho HY,Cheng ML,Cheng PF,Chiu DT

更新日期：2007-05-01 00:00:00

abstract：:Enhanced oxidative stress partly resulting from an over-production of superoxide anion (O(2)(•-)) represents a novel and particular risk factor in chronic kidney disease (CKD) patients. This study was therefore designed to evaluate O(2)(•-) determinants in this population. O(2)(•-) production was evaluated using chemi...

journal_title：Free radical research

authors： Morena M,Patrier L,Jaussent I,Bargnoux AS,Dupuy AM,Badiou S,Leray-Moragues H,Klouche K,Canaud B,Cristol JP

更新日期：2011-06-01 00:00:00

abstract：:The ability of a range of dietary flavonoids to inhibit low-density lipoprotein (LDL) oxidation in vitro was tested using a number of different methods to assess oxidative damage to LDL. Overall quercetin was the most effective inhibitor of oxidative damage to LDL in vitro. On this basis, a diet enriched with onions a...

journal_title：Free radical research

authors： O'Reilly JD,Sanders TA,Wiseman H

更新日期：2000-10-01 00:00:00

abstract：:This work describes the synthesis and characterisation of some novel hybrid molecules which contains in the same molecule a free radical moiety of hydrazyl type and a spin-trap moiety of nitrone type. The new compounds synthesized have multiple and easy to follow spectroscopic properties, making them useful as sensors...

journal_title：Free radical research

authors： Ionita P

更新日期：2006-01-01 00:00:00

abstract：:It has been reported that haem oxygenase-1 (Hmox1) induction attenuates neointimal thickening. Here we further investigated the potential mechanisms regulating this important pathological process. We revealed that histone deacetylase 2 (HDAC2) was induced following Hmox1 induction under 1% oxygen treatment and this in...

journal_title：Free radical research

authors： Ni J,Yang W,Shen W,Zhang R

更新日期：2018-10-01 00:00:00

abstract：:Reperfusion injury of the liver occurs in liver transplantation and in major hepatectomies. It triggers a severe oxidative stress that leads to increased lipid peroxidation. In our study we examined the effect of parenteral supranutritional administration of alpha-tocopherol, a vitamin that plays a key role in the end...

journal_title：Free radical research

authors： Giakoustidis D,Kontos N,Iliadis S,Papageorgiou G,Tsantilas D,Spyridis C,Papazoglou K,Botsoglou N,Dimitriadou A,Giakoustidis E

更新日期：2001-08-01 00:00:00

abstract：:Copper Fenton systems (Cu(II)/H2O2 and Cu(II)/Asc) inactivated the lipoamide reductase and enhanced the diaphorase activity of pig-heart lipoamide dehydrogenase (LADH). Cupric ions alone were less effective. As a result of Cu(II)/H2O2 treatment, the number of titrated thiols in LADH decreased from 6 to 1 per subunit. ...

journal_title：Free radical research

authors： Gutierrez-Correa J,Stoppani AO

更新日期：1995-03-01 00:00:00

abstract：:Manganese superoxide dismutase (MnSOD) levels have been found to be low in human pancreatic cancer [Pancreas 26, (2003), 23] and human pancreatic cancer cell lines [Cancer Res. 63, (2003), 1297] when compared to normal human pancreas. We hypothesized that stable overexpression of pancreatic cancer cells with MnSOD cDN...

journal_title：Free radical research

authors： Ough M,Lewis A,Zhang Y,Hinkhouse MM,Ritchie JM,Oberley LW,Cullen JJ

更新日期：2004-11-01 00:00:00

abstract：:The use of antioxidants to prevent intracellular free radical damage is an area currently attracting considerable research interest. The compound 2',7'-dichlorofluorescin diacetate (DCFH-DA) is a probe for intracellular peroxide formation commonly used in such studies. During our studies we unexpectedly found that inc...

journal_title：Free radical research

authors： Kalinich JF,Ramakrishnan N,McClain DE

更新日期：1997-01-01 00:00:00

abstract：BACKGROUND:Although cis-diamminedichloroplatinum (II) (cisplatin) is an effective anticancer agent, its clinical use is highly limited predominantly due to its adverse effects on renal functions. The present work examined the therapeutic potential of edaravone, a free radical scavenger, for inhibiting cisplatin-induced...

journal_title：Free radical research

authors： Iguchi T,Nishikawa M,Chang B,Muroya O,Sato EF,Nakatani T,Inoue M

更新日期：2004-04-01 00:00:00

abstract：:The COST Action CM1201 "Biomimetic Radical Chemistry" has been active since December 2012 for 4 years, developing research topics organized into four working groups: WG1 - Radical Enzymes, WG2 - Models of DNA damage and consequences, WG3 - Membrane stress, signalling and defenses, and WG4 - Bio-inspired synthetic stra...

journal_title：Free radical research

authors： Ferreri C,Golding BT,Jahn U,Ravanat JL

更新日期：2016-11-01 00:00:00

abstract：:Radicals from one-electron oxidation of 4-hydroxycinnamate, ferulate and 3,4-dihydroxycinnamate have been formed by reaction with the oxidising triplet state of duroquinone. All three compounds react with triplet duroquinone with second order rate constants close to the diffusion-controlled limit. The identity of the ...

journal_title：Free radical research

authors： Bisby RH,Parker AW

更新日期：2001-07-01 00:00:00

abstract：:The cytologically active secondary lipid peroxidation products, malondialdehyde (MDA) and 4-hydroxy-2-nonenal (HNE) have been detected as their 2,4-dinitrophenylhydrazone (DNP) derivatives in plant tissue cultures using LC-MS. This paper reports, for the first time, the use of LC-MS methodology to definitively identif...

journal_title：Free radical research

authors： Deighton N,Magill WJ,Bremner DH,Benson EE

更新日期：1997-09-01 00:00:00

abstract：:We tested the hypothesis that hypertension associated with polycythemia vera (PV) may be related to hemoglobin released from erythrocytes (cell-free hemoglobin, fHb). We assessed hematocrit, mean arterial pressure (MAP), blood viscosity, and the level of fHb and nitrite/nitrate (NOx) in the plasma of 73 PV patients an...

journal_title：Free radical research

authors： Rusak T,Misztal T,Piszcz J,Tomasiak M

更新日期：2014-02-01 00:00:00