Abstract:
:Ceruloplasmin (CP) is a blue copper glycoprotein with multiple physiological functions including ferroxidase and oxidase activities. CP is also an important serum oxygen free radical (OFR) scavenger and antioxidant, exerting cardioprotective and antifibrillatory actions. Although it has been reported that CP activities can be inhibited by OFR, the intimate mechanism of this inactivation is still not clear. Exposure of bovine CP to H2O2 induced inactivation of the protein as well as structural alterations as indicated by loss of protein bands by SDS-PAGE. Both phenomena were H2O2 concentration and time dependent. HPLC gel filtration and capillary electrophoresis analysis of CP treated with H2O2 revealed an aggregation of the protein. Quantification of dityrosine formation by fluorescence indicated the involvement of dityrosine bridging, which could be responsible for aggregation of CP under oxidative attack. Oxidative damage to CP under H2O2 treatment was completely prevented by pyruvate, suggesting that the association of CP with antioxidants could extend the range of the protective action of this protein.
journal_name
Free Radic Resjournal_title
Free radical researchauthors
Aouffen M,Paquin J,Furtos A,Waldron KC,Mateescu MAdoi
10.1080/10715760310001624079keywords:
subject
Has Abstractpub_date
2004-01-01 00:00:00pages
19-26issue
1eissn
1071-5762issn
1029-2470journal_volume
38pub_type
杂志文章abstract::Amphotericin B has been the gold standard for the treatment of invasive mycosis for many years. Its resistance mechanisms are reported to be mainly related to the decrease of ergosterol content or the changes of cell wall. Previous study has shown that Saccharomyces cerevisiae strain lack of BSC2 was sensitive signifi...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715762.2020.1751151
更新日期:2020-04-01 00:00:00
abstract::Rabbits were fed a diet containing 1% cholesterol for 8 weeks and the levels of iron and oxidized lipids in liver analysed using atomic absorption spectroscopy and gas chromatography-mass spectrometry. A non-significant trend to an increase in iron level, but significant increases in the lipid peroxidation products, F...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715760802691455
更新日期:2009-03-01 00:00:00
abstract::Resorcinols (pentadecylresorcinol, olivetol, orcinol and resorcinol) exhibit antioxidant properties in liposomal systems. Antioxidant potency depends on the length of the alkyl chain. Pentadecylresorcinol has been demonstrated to be the most active antioxidant, indicating significance of its alkyl chain in a lipid bil...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.3109/10715769809070804
更新日期:1998-04-01 00:00:00
abstract::Oxidative stress is associated with many cardiovascular diseases, such as hypertension and arteriosclerosis. Oxidative stress reportedly activates the L-type voltage-gated calcium channel (VDCCL) and elevates [Ca2+]i in many cells. However, how oxidative stress activates VDCCL under clinical setting and the consequenc...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715762.2018.1556394
更新日期:2019-01-01 00:00:00
abstract::Hypoxia is a well-known threat to neuronal cells and triggers the pathophysiological syndromes in extreme environments such as high altitudes and traumatic conditions such as stroke. Among several prophylactic molecules proven suitable for ameliorating free radical damage, NAP (an octapeptide with initial amino acids:...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.3109/10715762.2015.1011153
更新日期:2015-04-01 00:00:00
abstract::The radiation-induced reactions of a water-soluble coumarin derivative, coumarin-3-carboxyl acid (C3CA), have been investigated in aqueous solutions by pulse radiolysis with a 35 MeV electron beam, final product analysis following (60)Co γ-irradiations and deterministic model simulations. Pulse radiolysis revealed tha...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.3109/10715762.2012.684879
更新日期:2012-07-01 00:00:00
abstract::Neopterin and the reduced form, 7,8-dihydroneopterin (78NP) are pteridines released from macrophages when stimulated with gamma-interferon in vivo. The role of 78NP in inflammatory response is unknown though neopterin has been used clinically as a marker of immune cell activation, due to its very fluorescent nature. U...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715760100300121
更新日期:2001-02-01 00:00:00
abstract::Stichodactyla heliantus II (St II) is a haemolytic toxin whose activity depends of the characteristics of red blood cells (RBC). Among the factors that may tune the response of the RBC to the toxin activity stand the oxidative status of the cell. This study investigates how pre-oxidation of RBC modifies St II activity...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.3109/10715762.2010.536838
更新日期:2011-04-01 00:00:00
abstract::3-Nitrotyrosine (3NT) is known as an important indicator of nitrosative stress and has been linked to various diseases. Our aim was to develop an indirect ELISA (enzyme-linked immunosorbent assay) method suitable for the detection of protein-bound 3NT in clinical plasma and serum samples. Nitrated protein standards an...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.3109/10715762.2011.652627
更新日期:2012-03-01 00:00:00
abstract::Adriamycin (ADR) is nephrotoxic. One component of ADR-induced nephropathy may be oxidative stress. This study used a recently developed line of transgenic mice (Nmt) on the FVB background strain, which over-express the antioxidant protein metallothionein (MT) in podocytes. Cultured podocytes from Nmt mice were resista...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715760802657308
更新日期:2009-02-01 00:00:00
abstract:INTRODUCTION:Nuclear factor, erythroid 2 like 2 (NFE2L2) is an important transcription factor that protects cells from oxidative stress (OS). NFE2L2 deficiency in placentas is associated with pregnancy complications. We have demonstrated that elevated OS existed in placental shares of the smaller fetus in selective int...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715762.2017.1315113
更新日期:2017-04-01 00:00:00
abstract::Asthma is an allergic inflammation driven by the Th2 immune response with release of cytokines such as IL-4 and IL-13, which contribute to the airflow limitations and airway hyperresponsiveness (AHR). The involvement of oxidative stress in this process is well-established, but the specific role of the superoxide anion...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715762.2017.1364377
更新日期:2017-07-01 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
pub_type: 杂志文章
doi:10.3109/10715762.2013.860225
更新日期:2014-02-01 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
pub_type: 杂志文章
doi:10.1080/10715760400017376
更新日期:2004-11-01 00:00:00
abstract::Of all the aerobic respiration by-products, cytotoxic superoxide derived from mitochondrial-leaked electrons, is the only one known to be disposed of intracellularly. Is this fate the only destiny for mitochondrial-leaked electrons? When Cynomolgus monkeys were injected intravenously with reactive oxygen species (ROS)...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715762.2019.1677902
更新日期:2019-12-01 00:00:00
abstract::In the present study we tested the ability of different antioxidant agents, used alone or in combination, to reduce the reactive oxygen species (ROS) levels and to increase the glutathione peroxidase (GPx) activity. Moreover, we tested the ability of such antioxidant agents to reduce the serum levels of proinflammator...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715760303849
更新日期:2003-02-01 00:00:00
abstract::In this study, we studied whether chronic oral administration of the natural antioxidant, malabaricone C (mal C) can reduce blood pressure (BP) and attenuate cardio-vascular remodeling in deoxycorticosterone acetate (DOCA)-salt hypertensive rats. The dose of mal C for its anti-hypertensive action was optimized by meas...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.3109/10715762.2015.1112005
更新日期:2016-01-01 00:00:00
abstract::Autophagy modulation is a potential therapeutic strategy for breast cancer, and a previous study indicated that metformin exhibits significant anti-carcinogenic activity. However, the ability of metformin to induce autophagy and its role in breast cancer cell death remains unclear. In this study, we exposed MCF-7 cell...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715762.2018.1485075
更新日期:2018-08-01 00:00:00
abstract::It is well known that reactive oxygen species (ROS) attack several living tissues and increase the risk of development and progression of serious diseases. In neuronal level, ROS induce cell death in concentration-dependent fashion. However, little is known about the mechanisms of neuronal changes by ROS prior to indu...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.3109/10715762.2011.647689
更新日期:2012-02-01 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
pub_type: 杂志文章,评审
doi:10.1080/10715762.2016.1248961
更新日期:2016-11-01 00:00:00
abstract::Exposure of dry powder forms of the drugs nitrendipine, nifedipine, felodipine, and nimodipine to gamma-radiation results in the formation of free radicals detected by electron paramagnetic resonance (EPR) spectroscopy. The four structurally related drugs show qualitatively identical EPR spectral features in terms of ...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715769900300791
更新日期:1999-09-01 00:00:00
abstract::Available data on the absorption, metabolism and pharmacokinetics of coenzyme Q10 (CoQ10) are reviewed in this paper. CoQ10 has a fundamental role in cellular bioenergetics. CoQ10 is also an important antioxidant. Because of its hydrophobicity and large molecular weight, absorption of dietary CoQ10 is slow and limited...
journal_title:Free radical research
pub_type: 杂志文章,评审
doi:10.1080/10715760600617843
更新日期:2006-05-01 00:00:00
abstract::The metabolism of paraquat generates oxygen radicals. Paraquat has thus been suggested as a model compound to induce oxidative damage to DNA, lipids and proteins in different cells and tissues, although experimental data are inconsistent. In order to explore the possibilities for an animal model of oxidative DNA damag...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715760000300421
更新日期:2000-05-01 00:00:00
abstract::Proteins constitute the major 'working force' for all forms of biological work. Their exact conformation and pattern of folding are tightly connected to their activity and function. Reactive oxygen and nitrogen species (ROS and RNS) are formed during normal metabolism and in higher fluxes under pathological conditions...
journal_title:Free radical research
pub_type: 杂志文章,评审
doi:
更新日期:2000-11-01 00:00:00
abstract::Free radical oxidation of cholesterol and its precursors contribute significantly to the pathophysiology of a number of human diseases. This review intends to summarize recent developments and provide a perspective on the reactivities of sterols toward free radical oxidation, the free radical reaction mechanism, and t...
journal_title:Free radical research
pub_type: 杂志文章,评审
doi:10.3109/10715762.2014.985219
更新日期:2015-01-01 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
pub_type: 杂志文章
doi:10.1080/10715762.2018.1524578
更新日期:2018-10-01 00:00:00
abstract::The markers 3-nitrotyrosine and 3-chlorotyrosine are measured as surrogates for reactive nitrogen species and hypochlorous acid respectively, which are both elevated in inflamed human tissues. Previous studies reported a loss of 3-nitrotyrosine when exposed to hypochlorous acid, suggesting that observations of 3-nitro...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.3109/10715762.2014.954110
更新日期:2014-11-01 00:00:00
abstract::Weaning mice were fed a diet supplemented with beef tallow (BT) or BT plus docosahexaenoic acid (DHA) containing 100 mg alpha-tocopherol/kg (alpha-Toc100) or 500 mg alpha-tocopherol/kg (alpha-Toc500) for 4 wk to modify membrane fatty acid unsaturation, and then were administered ferric nitrilotriacetate (Fe-NTA). The ...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715769900300221
更新日期:1999-03-01 00:00:00
abstract::APE1/Ref-1, the mammalian ortholog of E. coli Xth, and a multifunctional protein possessing both DNA repair and transcriptional regulatory activities, has dual role in controlling cellular response to oxidative stress. It is rate-limiting in repair of oxidative DNA damage including strand breaks and also has co-transc...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715760701765616
更新日期:2008-01-01 00:00:00
abstract::The increasing knowledge on the participation of free radicals in many diverse clinical and pathological conditions, has consequently expanded the search for new and versatile antioxidants aimed at combating oxidative stress. Our interest in this field concerns aromatic indolinonic aminoxyls (nitroxides) which efficie...
journal_title:Free radical research
pub_type: 杂志文章
doi:10.1080/10715769900301621
更新日期:1999-08-01 00:00:00