Early, but not late onset estrogen replacement therapy prevents oxidative stress and metabolic alterations caused by ovariectomy.

Abstract:

AIMS:The usefulness of estrogen replacement therapy (ERT) in preventing oxidative stress associated with menopause is controversial. We aimed to study if there is a critical time window for effective treatment of the effects of ovariectomy with estrogens at the molecular, metabolic, and cellular level. RESULTS:Our main finding is that early, but not late onset of ERT prevents an ovariectomy-associated increase in mitochondrial hydrogen peroxide levels, oxidative damage to lipids and proteins, and a decrease in glutathione peroxidase and catalase activity in rats. This may be due to a change in the estrogen receptor (ER) expression profile: ovariectomy increases the ER α/β ratio and immediate estrogen replacement prevents it. Positron emission tomography analysis shows that ovariectomy decreases the brain glucose uptake in vivo and that estrogen administration is beneficial, but only if administered immediately after deprivation. Ovariectomy decreases GLUT-1 and 3 glucose transporters in the brain, and only early onset estrogen administration prevents it. Plasma from rats treated with estrogens immediately after ovariectomy show similar metabolomics profiles as controls. INNOVATION:We provide molecular basis for the recommendation of early onset ERT and explain its lack of effectiveness if a significant time period elapses after ovariectomy and probably after the onset of menopause. CONCLUSION:Only early, but not late onset administration of estrogens after ovariectomy has beneficial effects at molecular levels on oxidative stress, brain glucose uptake, and metabolomic profiles.

journal_name

Antioxid Redox Signal

authors

López-Grueso R,Gambini J,Abdelaziz KM,Monleón D,Díaz A,El Alami M,Bonet-Costa V,Borrás C,Viña J

doi

10.1089/ars.2012.5112

subject

Has Abstract

pub_date

2014-01-10 00:00:00

pages

236-46

issue

2

eissn

1523-0864

issn

1557-7716

journal_volume

20

pub_type

杂志文章
  • The actin cytoskeleton reorganization induced by Rac1 requires the production of superoxide.

    abstract::The small GTPase rac1 controls actin redistribution to membrane ruffles in fibroblasts and other cell types, as well as the activation of the NADPH oxidase in phagocytes. We explored the possibility that these two processes could be related. We used a replication-deficient adenoviral vector to overexpress the constitu...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章

    doi:10.1089/ars.1999.1.1-29

    authors: Moldovan L,Irani K,Moldovan NI,Finkel T,Goldschmidt-Clermont PJ

    更新日期:1999-04-01 00:00:00

  • Redox Pioneer: Professor Gregg L. Semenza.

    abstract::Dr. Gregg L. Semenza is recognized here as a Redox Pioneer because he has published three articles that have been cited more than 1,000 times, and 74 articles that have each been cited more than 100 times. Dr. Semenza is known for his seminal discovery of hypoxia-inducible factor-1 (HIF-1) and for identifying molecula...

    journal_title:Antioxidants & redox signaling

    pub_type: 传,历史文章,杂志文章

    doi:10.1089/ars.2010.3155

    authors: Prabhakar NR

    更新日期:2010-08-15 00:00:00

  • NADPH oxidase drives cytokine and neurotoxin release from microglia and macrophages in response to HIV-Tat.

    abstract::Previous reports have shown that the human immunodeficiency virus (HIV) regulatory protein Tat has both pro-oxidant and pro-inflammatory properties, suggesting that Tat might contribute to the neurological complications of HIV. However, the intracellular mechanisms whereby Tat triggers free radical production and infl...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章

    doi:10.1089/ars.2008.2097

    authors: Turchan-Cholewo J,Dimayuga VM,Gupta S,Gorospe RM,Keller JN,Bruce-Keller AJ

    更新日期:2009-02-01 00:00:00

  • Role of the inducible nitric oxide synthase in the onset of fructose-induced steatosis in mice.

    abstract::To test the hypothesis that the inducible nitric oxide synthase (iNOS) is involved in mediating the toll-like receptor 4-dependent effects on the liver in the onset of fructose-induced steatosis, wild-type and iNOS knockout (iNOS(-/-)) mice were either fed tap water or 30% fructose solution for 8 weeks. Chronic consum...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章

    doi:10.1089/ars.2010.3263

    authors: Spruss A,Kanuri G,Uebel K,Bischoff SC,Bergheim I

    更新日期:2011-06-01 00:00:00

  • A novel ER stress transducer, OASIS, expressed in astrocytes.

    abstract::Secretory and transmembrane proteins are correctly folded or processed in the endoplasmic reticulum (ER). Various stresses disturb ER function and provoke the accumulation of unfolded proteins in the ER lumen. This condition is termed ER stress. Recently, ER stress has been linked to neuronal death in various neurodeg...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章,评审

    doi:10.1089/ars.2006.1520

    authors: Saito A,Hino S,Murakami T,Kondo S,Imaizumi K

    更新日期:2007-05-01 00:00:00

  • Immunohistochemical localization of thioredoxin and glutaredoxin in mouse embryos and fetuses.

    abstract::Although oxygen is essential for promoting energy metabolism and for enhancing cell proliferation, early mouse embryos are very sensitive to high oxygen concentration. Because the tissue-specificity and sequential changes of the expression of antioxidative enzymes in rodent embryos have not been investigated systemati...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章

    doi:10.1089/ars.2000.2.4-653

    authors: Kobayashi M,Nakamura H,Yodoi J,Shiota K

    更新日期:2000-01-01 00:00:00

  • Cardiac stem cells: biology and clinical applications.

    abstract:SIGNIFICANCE:Heart disease is the primary cause of death in the industrialized world. Cardiac failure is dictated by an uncompensated reduction in the number of viable and fully functional cardiomyocytes. While current pharmacological therapies alleviate the symptoms associated with cardiac deterioration, heart transpl...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章,评审

    doi:10.1089/ars.2014.5875

    authors: Goichberg P,Chang J,Liao R,Leri A

    更新日期:2014-11-10 00:00:00

  • Electronic structure studies of quinones and semiquinones: accurate calculation of spin densities and electron paramagnetic resonance parameters.

    abstract::The application of electronic structure methods to the prediction of geometries, spin densities, and hyperfine couplings for biologically relevant quinones and semiquinones is reviewed. It is demonstrated that hybrid-type density functional methods are particularly suitable for such studies. Hydrogen bonding to the se...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章,评审

    doi:10.1089/15230860152665000

    authors: O'Malley PJ

    更新日期:2001-10-01 00:00:00

  • Improved function of diabetic wound-site macrophages and accelerated wound closure in response to oral supplementation of a fermented papaya preparation.

    abstract::Carica papaya Linn is widely known as a medicinal fruit. We sought to study a standardized fermented papaya preparation (FPP) for its effects on wound healing in adult obese diabetic (db/db) mice. FPP blunted the gain in blood glucose and improved the lipid profile after 8 weeks of oral supplementation. However, FPP d...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章

    doi:10.1089/ars.2009.3039

    authors: Collard E,Roy S

    更新日期:2010-09-01 00:00:00

  • Alveolar oxidative stress is associated with elevated levels of nonenzymatic low-molecular-weight antioxidants in patients with different forms of chronic fibrosing interstitial lung diseases.

    abstract::Increasing evidence indicates that disequilibrium of the alveolar oxidant-antioxidant balance may play a role in the pathogenesis of chronic fibrosing lung diseases. Excessive production of oxidants and a differential regulation of antioxidant enzymes have been described under these conditions. We characterized for th...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章

    doi:10.1089/ars.2008.2105

    authors: Markart P,Luboeinski T,Korfei M,Schmidt R,Wygrecka M,Mahavadi P,Mayer K,Wilhelm J,Seeger W,Guenther A,Ruppert C

    更新日期:2009-02-01 00:00:00

  • Non-heme iron sensors of reactive oxygen and nitrogen species.

    abstract:SIGNIFICANCE:In bacteria, transcriptional responses to reactive oxygen and nitrogen species (ROS and RNS, respectively) are typically coordinated by regulatory proteins that employ metal centers or reactive thiols to detect the presence of those species. This review is focused on the structure, function and mechanism o...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章,评审

    doi:10.1089/ars.2012.4533

    authors: Spiro S,D'Autréaux B

    更新日期:2012-11-01 00:00:00

  • Ascorbic acid and sodium-dependent vitamin C transporters in the peripheral nervous system: from basic science to clinical trials.

    abstract:SIGNIFICANCE:Ascorbic acid and sodium-dependent vitamin C transporters (SVCT) have been shown to have important functions in the peripheral nervous system (PNS). Ascorbic acid is known to promote myelination in vitro in Schwann cell/dorsal root ganglion co-cultures by the formation of a collagen- and laminin-containing...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章,评审

    doi:10.1089/ars.2013.5380

    authors: Gess B,Röhr D,Young P

    更新日期:2013-12-10 00:00:00

  • Parenteral ascorbate as a cancer therapeutic: a reassessment based on pharmacokinetics.

    abstract:SIGNIFICANCE:Ewan Cameron reported that ascorbate, given orally and intravenously at doses of up to 10 g/day, was effective in the treatment of cancer. Double-blind placebo-controlled clinical trials showed no survival advantage when the same doses of ascorbate were given orally, leading the medical and scientific comm...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章,评审

    doi:10.1089/ars.2013.5372

    authors: Parrow NL,Leshin JA,Levine M

    更新日期:2013-12-10 00:00:00

  • The redox-sensitive DNA binding sites responsible for age-related downregulation of SMP30 by ERK pathway and reversal by calorie restriction.

    abstract::It was recently found that age-related changes in SMP30 expression can be modulated by antioxidative action. In the current study, the modulation of SMP30 gene expression was explored by (a) antioxidative calorie restriction (CR), (b) proinflammatory lipopolysaccharide (LPS), in aged rat, (c) oxidative stress promoter...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章

    doi:10.1089/ars.2006.8.671

    authors: Jung KJ,Maruyama N,Ishigami A,Yu BP,Chung HY

    更新日期:2006-03-01 00:00:00

  • Dysregulation of corticostriatal ascorbate release and glutamate uptake in transgenic models of Huntington's disease.

    abstract:SIGNIFICANCE:Dysregulation of cortical and striatal neuronal processing plays a critical role in Huntington's disease (HD), a dominantly inherited condition that includes a progressive deterioration of cognitive and motor control. Growing evidence indicates that ascorbate (AA), an antioxidant vitamin, is released into ...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章

    doi:10.1089/ars.2013.5387

    authors: Rebec GV

    更新日期:2013-12-10 00:00:00

  • The thioredoxin superfamily in oxidative protein folding.

    abstract:SIGNIFICANCE:The thioredoxin (Trx) superfamily proteins, including protein disulfide isomerases (PDI) and Dsb protein family, are major players in oxidative protein folding, which involves native disulfide bond formation. These proteins contain Trx folds with CXXC active sites and fulfill their physiological functions ...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章,评审

    doi:10.1089/ars.2014.5849

    authors: Lu J,Holmgren A

    更新日期:2014-07-20 00:00:00

  • Experimentally Dissecting the Origins of Peroxiredoxin Catalysis.

    abstract:AIMS:Peroxiredoxins (Prxs) are ubiquitous cysteine-based peroxidases involved in oxidant defense and signal transduction. Despite much study, the precise roles of conserved residues remain poorly defined. In this study, we carried out extensive functional and structural characterization of 10 variants of such residues ...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章

    doi:10.1089/ars.2016.6922

    authors: Nelson KJ,Perkins A,Van Swearingen AED,Hartman S,Brereton AE,Parsonage D,Salsbury FR Jr,Karplus PA,Poole LB

    更新日期:2018-03-01 00:00:00

  • Reexamining the Function of Glutathione in Oxidative Protein Folding and Secretion.

    abstract:SIGNIFICANCE:Disturbance of glutathione (GSH) metabolism is a hallmark of numerous diseases, yet GSH functions are poorly understood. One key to this question is to consider its functional compartmentation. GSH is present in the endoplasmic reticulum (ER), where it competes with substrates for oxidation by the oxidativ...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章,评审

    doi:10.1089/ars.2017.7148

    authors: Delaunay-Moisan A,Ponsero A,Toledano MB

    更新日期:2017-11-20 00:00:00

  • Cardiac hypertrophy: mechanisms and therapeutic opportunities.

    abstract::Cardiac hypertrophy and heart failure are major causes of morbidity and mortality in Western societies. Many factors have been implicated in cardiac remodeling, including alterations in gene expression in myocytes, cardiomyocytes apoptosis, cytokines and growth factors that influence cardiac dynamics, and deficits in ...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章,评审

    doi:10.1089/ars.2007.1474

    authors: Gupta S,Das B,Sen S

    更新日期:2007-06-01 00:00:00

  • Electrochemical detection of natural antioxidants: principles and protocols.

    abstract::An overview is provided of the use of cyclic voltammetry and electrochemical detectors for HPLC to characterize antioxidants that are active as reducing agents at inert electrodes. Results are presented for cyclic voltammetry at a glassy carbon electrode in 50% methanol, 50% 0.1 M HClO4, a solution typically used in H...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章

    doi:10.1089/152308601317203495

    authors: Kilmartin PA

    更新日期:2001-12-01 00:00:00

  • Free radicals in cross talk between autophagy and apoptosis.

    abstract:SIGNIFICANCE:Oxidative (reactive oxygen species [ROS]) and nitrosative (reactive nitrogen species [RNS]) stress affects many physiological processes, including survival and death. Although high levels of ROS/RNS mainly causes cell death, low levels of free radicals directly modulate the activities of transcriptional fa...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章,评审

    doi:10.1089/ars.2013.5746

    authors: Kaminskyy VO,Zhivotovsky B

    更新日期:2014-07-01 00:00:00

  • Nitrosative stress and pathogenesis of insulin resistance.

    abstract::Insulin resistance is a major causative factor for type 2 diabetes and is associated with increased risk of cardiovascular disease. Despite intense investigation for a number of years, molecular mechanisms underlying insulin resistance remain to be determined. Recently, chronic inflammation has been highlighted as a c...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章,评审

    doi:10.1089/ars.2006.1464

    authors: Kaneki M,Shimizu N,Yamada D,Chang K

    更新日期:2007-03-01 00:00:00

  • Carbon Monoxide Gas Is Not Inert, but Global, in Its Consequences for Bacterial Gene Expression, Iron Acquisition, and Antibiotic Resistance.

    abstract:AIMS:Carbon monoxide is a respiratory poison and gaseous signaling molecule. Although CO-releasing molecules (CORMs) deliver CO with temporal and spatial specificity in mammals, and are proven antimicrobial agents, we do not understand the modes of CO toxicity. Our aim was to explore the impact of CO gas per se, withou...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章

    doi:10.1089/ars.2015.6501

    authors: Wareham LK,Begg R,Jesse HE,Van Beilen JW,Ali S,Svistunenko D,McLean S,Hellingwerf KJ,Sanguinetti G,Poole RK

    更新日期:2016-06-10 00:00:00

  • Nuclear Factor Erythroid 2-Related Factor 2 in Regulating Cancer Metabolism.

    abstract:: Significance: Nuclear factor erythroid 2 (NFE2)-related factor 2 (NFE2L2, or NRF2) is a transcription factor predominantly affecting the expression of antioxidant genes. NRF2 plays a significant role in the control of redox balance, which is crucial in cancer cells. NRF2 a...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章

    doi:10.1089/ars.2020.8024

    authors: Smolková K,Mikó E,Kovács T,Leguina-Ruzzi A,Sipos A,Bai P

    更新日期:2020-11-01 00:00:00

  • The Incomplete Glutathione Puzzle: Just Guessing at Numbers and Figures?

    abstract:SIGNIFICANCE:Glutathione metabolism is comparable to a jigsaw puzzle with too many pieces. It is supposed to comprise (i) the reduction of disulfides, hydroperoxides, sulfenic acids, and nitrosothiols, (ii) the detoxification of aldehydes, xenobiotics, and heavy metals, and (iii) the synthesis of eicosanoids, steroids,...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章,评审

    doi:10.1089/ars.2017.7123

    authors: Deponte M

    更新日期:2017-11-20 00:00:00

  • Axonal mitochondrial clusters containing mutant SOD1 in transgenic models of ALS.

    abstract::We studied the subcellular distribution of mitochondria and superoxide dismutase-1 (SOD1) in whole mounts of microdissected motor axons of rats expressing the ALS-linked SOD1-G93A mutation. The rationale was to determine whether physical interactions between the enzyme and mitochondria were linked to the axonopathy of...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章

    doi:10.1089/ars.2009.2614

    authors: Sotelo-Silveira JR,Lepanto P,Elizondo V,Horjales S,Palacios F,Martinez-Palma L,Marin M,Beckman JS,Barbeito L

    更新日期:2009-07-01 00:00:00

  • Dual involvement of coenzyme Q10 in redox signaling and inhibition of death signaling in the rat heart mitochondria.

    abstract::Coenzyme Q10 (CoQ) has long been utilized as a cardioprotective agent in various heart diseases. One of the most important mechanisms by which CoQ exerts cardioprotection is aerobic ATP production as a mobile electron carrier in the mitochondrial electron transfer chain. The ability of CoQ to afford myocardial protect...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章

    doi:10.1089/152308601750100588

    authors: Yamamura T,Otani H,Nakao Y,Hattori R,Osako M,Imamura H,Das DK

    更新日期:2001-02-01 00:00:00

  • NADPH oxidase-mediated triggering of inflammasome activation in mouse podocytes and glomeruli during hyperhomocysteinemia.

    abstract:AIM:Our previous studies have shown that NOD-like receptor protein (NALP3) inflammasome activation is importantly involved in podocyte dysfunction and glomerular sclerosis induced by hyperhomocysteinemia (hHcys). The present study was designed to test whether nicotinamide adenine dinucleotide phosphate (NADPH) oxidase-...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章

    doi:10.1089/ars.2012.4666

    authors: Abais JM,Zhang C,Xia M,Liu Q,Gehr TW,Boini KM,Li PL

    更新日期:2013-05-01 00:00:00

  • Mitochondrial plasticity in obesity and diabetes mellitus.

    abstract:SIGNIFICANCE:Insulin resistance and its related diseases, obesity and type 2 diabetes mellitus (T2DM), have been linked to changes in aerobic metabolism, pointing to a possible role of mitochondria in the development of insulin resistance. RECENT ADVANCES:Refined methodology of ex vivo high-resolution respirometry and...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章,评审

    doi:10.1089/ars.2012.4910

    authors: Jelenik T,Roden M

    更新日期:2013-07-20 00:00:00

  • Contribution of thioredoxin reductase to T-cell mitogenesis and NF-kappaB DNA-binding promoted by selenite.

    abstract::Although the essential role of selenium for cellular immune responses is obvious, delineation of the functions is lacking because selenium can either promote or inhibit cell growth, cytokine production, and activation of transcription factor nuclear factor-kappaB (NF-kappaB). Studies with human thioredoxin-1 (Trx-1)-t...

    journal_title:Antioxidants & redox signaling

    pub_type: 杂志文章

    doi:10.1089/ars.2007.9.115

    authors: Ueno H,Kajihara H,Nakamura H,Yodoi J,Nakamuro K

    更新日期:2007-01-01 00:00:00