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El-Gendy AA, Elsaed WM, Abdallah HI. Potential role of estradiol in ovariectomy-induced derangement of renal endocrine functions. Ren Fail 2019; 41:507-520. [PMID: 31216906 PMCID: PMC6586115 DOI: 10.1080/0886022x.2019.1625787] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Menopause is an important physiological event associated with structural and functional changes in the kidneys. An animal model of bilateral ovariectomy was used to study the effects of estrogen depletion, replacement and antiestrogen on renal structure and endocrine function. Sixty female rats were divided into six groups; group I was the control group, the remaining five groups underwent ovariectomy: group II received no treatment. The other groups received estradiol in group III, tamoxifen in group IV, estradiol followed by tamoxifen in group V and tamoxifen followed by estradiol in group VI. Serum creatinine, blood urea nitrogen, and endocrine functions of kidney were measured. Tissue samples were examined both microscopically for beta estrogen receptors and ultrastructurally for cell changes. Groups II, IV & VI showed a significant increase in creatinine, blood urea nitrogen, renal malondialdehyde, renal erythropoietin, plasma renin and plasma prostaglandin E2 and a significant decrease in renal antioxidants and serum vitamin D3. Groups III &V had a significant decrease in creatinine, blood urea nitrogen, renal malondialdehyde and renal erythropoietin with an increase in renal antioxidants, plasma prostaglandin E2 and serum vitamin D3. Histopathological and ultrastructural examinations revealed atrophic tubular changes in group II. The changes were less marked in groups III &V and more extensive in groups IV & VI. Estrogen receptor beta staining showed progressively increased expression in the absence of estrogen. Structural and most endocrine functions of the kidney were significantly affected by estradiol deficiency. Estradiol replacement exhibited a protective effect on renal tissue and endocrine functions.
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Affiliation(s)
- Ahmed A El-Gendy
- a Department of Medical Physiology, Faculty of Medicine , Taibah University , Madinah , Saudi Arabia.,b Department of Medical Physiology, Faculty of Medicine , Mansoura University , Mansoura , Egypt
| | - Wael M Elsaed
- c Department of Anatomy & Embryology, Faculty of Medicine , Taibah University , Madinah , Saudi Arabia.,d Department of Anatomy & Embryology, Faculty of Medicine , Mansoura University , Mansoura , Egypt
| | - Hesham I Abdallah
- c Department of Anatomy & Embryology, Faculty of Medicine , Taibah University , Madinah , Saudi Arabia.,e Department of Anatomy & Embryology, Faculty of Medicine , Ain Shams University , Cairo , Egypt
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2
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Muscle fatigue: general understanding and treatment. Exp Mol Med 2017; 49:e384. [PMID: 28983090 PMCID: PMC5668469 DOI: 10.1038/emm.2017.194] [Citation(s) in RCA: 272] [Impact Index Per Article: 38.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2017] [Revised: 05/20/2017] [Accepted: 05/23/2017] [Indexed: 12/19/2022] Open
Abstract
Muscle fatigue is a common complaint in clinical practice. In humans, muscle fatigue can be defined as exercise-induced decrease in the ability to produce force. Here, to provide a general understanding and describe potential therapies for muscle fatigue, we summarize studies on muscle fatigue, including topics such as the sequence of events observed during force production, in vivo fatigue-site evaluation techniques, diagnostic markers and non-specific but effective treatments.
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Destructive effect of non-enzymatic glycation on catalase and remediation via curcumin. Arch Biochem Biophys 2017; 630:81-90. [PMID: 28668706 DOI: 10.1016/j.abb.2017.06.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Revised: 06/25/2017] [Accepted: 06/26/2017] [Indexed: 01/09/2023]
Abstract
Non-enzymatic glycation of proteins is a post-translational modification that is produced by a covalent binding between reducing sugars and amino groups of lysine and arginine residues. In this paper the effect of pathological conditions, derived from hyperglycemia on bovine liver catalase (BLC) as a model protein was considered by measuring enzyme activity, reactive oxygen species (ROS) generation, and changes in catalase conformational properties. We observed that in the presence of glucose, the catalase activity gradually decreased. ROS generation was also involved in the glycation process. Thus, decreased BLC activity was partly considered as a result of ROS generation through glycation. However, in the presence of curcumin the amount of ROS was reduced resulting in increased activity of the glycated catalase. The effect of high glucose level and the potential inhibitory effect of curcumin on aggregation and structural changes of catalase were also investigated. Molecular dynamic simulations also showed that interaction of catalase with curcumin resulted in changes in accessible surface area (ASA) and pKa, two effective parameters of glycation, in potential glycation lysine residues. Thus, the decrease in ASA and increase in pKa of important lysine residues were considered as predominant factors in decreased glycation of BLC by curcumin.
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Lazarte SS, Mónaco ME, Terán MM, Haro AC, Achem MEL, Issé BA. Foxo3 gene expression and oxidative status in beta-thalassemia minor subjects. Rev Bras Hematol Hemoter 2017; 39:115-121. [PMID: 28577647 PMCID: PMC5457465 DOI: 10.1016/j.bjhh.2017.01.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Revised: 12/13/2016] [Accepted: 01/05/2017] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Oxidative stress may aggravate symptoms of hemolytic anemias such as beta-thalassemia. FoxO3 activation results in resistance to oxidative stress in fibroblasts and neuronal cell cultures. OBJECTIVE The purpose of this research was to study FoxO3 gene expression and oxidative status in beta-thalassemia minor individuals. METHODS Sixty-three subjects (42 apparently healthy individuals and 21 with beta-thalassemia minor) were analyzed at the Universidad Nacional de Tucumán, Argentina, between September 2013 and June 2014. A complete blood count, hemoglobin electrophoresis in alkaline pH and hemoglobin A2 levels were quantified. Moreover, thiobarbituric acid reactive species, erythrocyte catalase activity and iron status were evaluated. Beta-thalassemia mutations were determined by real-time polymerase chain reaction. FoxO3 gene expression was investigated by real-time reverse transcription-polymerase chain reaction using mononuclear cells from peripheral blood. RESULTS Subjects were grouped as children (≤12 years), and adult women and men. The analysis of erythrocyte catalase activity/hemoglobin ratio revealed a significant difference (p-value <0.05) between healthy and beta-thalassemia minor adults, but no significant difference was observed in the thiobarbituric acid reactive species levels and FoxO3 gene expression (p-value >0.05). Thiobarbituric acid reactive species and the erythrocyte catalase activity/hemoglobin ratio were not significantly different on comparing the type of beta-thalassemia mutation (β0 or β+) present in carriers. CONCLUSIONS The lack of systemic oxidative imbalance demonstrated by thiobarbituric acid reactive species is correlated to the observation of normal FoxO3 gene expression in mononuclear cells of peripheral blood. However, an imbalanced antioxidant state was shown by the erythrocyte catalase activity/hemoglobin ratio in beta-thalassemia minor carriers. It would be necessary to study FoxO3 gene expression in reticulocytes to elucidate the role of FoxO3 in this pathology.
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Affiliation(s)
| | | | | | - Ana Cecilia Haro
- Universidad Nacional de Tucumán, San Miguel de Tucumán, Argentina
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Erythrocyte Catalase Activity in More Frequent Microcytic Hypochromic Anemia: Beta-Thalassemia Trait and Iron Deficiency Anemia. Adv Hematol 2015; 2015:343571. [PMID: 26527217 PMCID: PMC4615862 DOI: 10.1155/2015/343571] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 09/10/2015] [Accepted: 09/16/2015] [Indexed: 01/02/2023] Open
Abstract
Most common microcytic hypochromic anemias are iron deficiency anemia (IDA) and β-thalassemia trait (BTT), in which oxidative stress (OxS) has an essential role. Catalase causes detoxification of H2O2 in cells, and it is an indispensable antioxidant enzyme. The study was designed to measure erythrocyte catalase activity (ECAT) in patients with IDA (10) or BTT (21), to relate it with thalassemia mutation type (β0 or β+) and to compare it with normal subjects (67). Ninety-eight individuals were analyzed since September 2013 to June 2014 in Tucumán, Argentina. Total blood count, hemoglobin electrophoresis at alkaline pH, HbA2, catalase, and iron status were performed. β-thalassemic mutations were determined by real-time PCR. Normal range for ECAT was 70,0–130,0 MU/L. ECAT was increased in 14% (3/21) of BTT subjects and decreased in 40% (4/10) of those with IDA. No significant difference (p = 0,245) was shown between normal and BTT groups, while between IDA and normal groups the difference was proved to be significant (p = 0,000). In β0 and β+ groups, no significant difference (p = 0,359) was observed. An altered ECAT was detected in IDA and BTT. These results will help to clarify how the catalase activity works in these anemia types.
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Hall MD, Marshall TS, Kwit ADT, Miller Jenkins LM, Dulcey AE, Madigan JP, Pluchino KM, Goldsborough AS, Brimacombe KR, Griffiths GL, Gottesman MM. Inhibition of glutathione peroxidase mediates the collateral sensitivity of multidrug-resistant cells to tiopronin. J Biol Chem 2014; 289:21473-89. [PMID: 24930045 DOI: 10.1074/jbc.m114.581702] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Multidrug resistance (MDR) is a major obstacle to the successful chemotherapy of cancer. MDR is often the result of overexpression of ATP-binding cassette transporters following chemotherapy. A common ATP-binding cassette transporter that is overexpressed in MDR cancer cells is P-glycoprotein, which actively effluxes drugs against a concentration gradient, producing an MDR phenotype. Collateral sensitivity (CS), a phenomenon of drug hypersensitivity, is defined as the ability of certain compounds to selectively target MDR cells, but not the drug-sensitive parent cells from which they were derived. The drug tiopronin has been previously shown to elicit CS. However, unlike other CS agents, the mechanism of action was not dependent on the expression of P-glycoprotein in MDR cells. We have determined that the CS activity of tiopronin is mediated by the generation of reactive oxygen species (ROS) and that CS can be reversed by a variety of ROS-scavenging compounds. Specifically, selective toxicity of tiopronin toward MDR cells is achieved by inhibition of glutathione peroxidase (GPx), and the mode of inhibition of GPx1 by tiopronin is shown in this report. Why MDR cells are particularly sensitive to ROS is discussed, as is the difficulty in exploiting this hypersensitivity to tiopronin in the clinic.
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Affiliation(s)
- Matthew D Hall
- From the Laboratory of Cell Biology, Center for Cancer Research, NCI, National Institutes of Health, Bethesda, Maryland 20892 and
| | - Travis S Marshall
- From the Laboratory of Cell Biology, Center for Cancer Research, NCI, National Institutes of Health, Bethesda, Maryland 20892 and
| | - Alexandra D T Kwit
- From the Laboratory of Cell Biology, Center for Cancer Research, NCI, National Institutes of Health, Bethesda, Maryland 20892 and
| | - Lisa M Miller Jenkins
- From the Laboratory of Cell Biology, Center for Cancer Research, NCI, National Institutes of Health, Bethesda, Maryland 20892 and
| | - Andrés E Dulcey
- the Imaging Probe Development Center, NHLBI, National Institutes of Health, Rockville, Maryland 20850
| | - James P Madigan
- From the Laboratory of Cell Biology, Center for Cancer Research, NCI, National Institutes of Health, Bethesda, Maryland 20892 and
| | - Kristen M Pluchino
- From the Laboratory of Cell Biology, Center for Cancer Research, NCI, National Institutes of Health, Bethesda, Maryland 20892 and
| | - Andrew S Goldsborough
- From the Laboratory of Cell Biology, Center for Cancer Research, NCI, National Institutes of Health, Bethesda, Maryland 20892 and
| | - Kyle R Brimacombe
- From the Laboratory of Cell Biology, Center for Cancer Research, NCI, National Institutes of Health, Bethesda, Maryland 20892 and
| | - Gary L Griffiths
- the Imaging Probe Development Center, NHLBI, National Institutes of Health, Rockville, Maryland 20850
| | - Michael M Gottesman
- From the Laboratory of Cell Biology, Center for Cancer Research, NCI, National Institutes of Health, Bethesda, Maryland 20892 and
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Finsterer J. Biomarkers of peripheral muscle fatigue during exercise. BMC Musculoskelet Disord 2012; 13:218. [PMID: 23136874 PMCID: PMC3534479 DOI: 10.1186/1471-2474-13-218] [Citation(s) in RCA: 157] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Accepted: 10/10/2012] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Biomarkers of peripheral muscle fatigue (BPMFs) are used to offer insights into mechanisms of exhaustion during exercise in order to detect abnormal fatigue or to detect defective metabolic pathways. This review aims at describing recent advances and future perspectives concerning the most important biomarkers of muscle fatigue during exercise. RESULTS BPMFs are classified according to the mechanism of fatigue related to adenosine-triphosphate-metabolism, acidosis, or oxidative-metabolism. Muscle fatigue is also related to an immunological response. impaired calcium handling, disturbances in bioenergetic pathways, and genetic responses. The immunological and genetic response may make the muscle susceptible to fatigue but may not directly cause muscle fatigue. Production of BPMFs is predominantly dependent on the type of exercise. BPMFs need to change as a function of the process being monitored, be stable without appreciable diurnal variations, correlate well with exercise intensity, and be present in detectable amounts in easily accessible biological fluids. The most well-known BPMFs are serum lactate and interleukin-6. The most widely applied clinical application is screening for defective oxidative metabolism in mitochondrial disorders by means of the lactate stress test. The clinical relevance of most other BPMFs, however, is under debate, since they often depend on age, gender, physical fitness, the energy supply during exercise, the type of exercise needed to produce the BPMF, and whether healthy or diseased subjects are investigated. CONCLUSIONS Though the role of BPMFs during fatigue is poorly understood, measuring BPMFs under specific, standardised conditions appears to be helpful for assessing biological states or processes during exercise and fatigue.
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Affiliation(s)
- Josef Finsterer
- Krankenanstalt Rudolfstiftung, Postfach 20, 1180, Vienna, Austria.
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Góth L, Nagy T. Acatalasemia and diabetes mellitus. Arch Biochem Biophys 2012; 525:195-200. [DOI: 10.1016/j.abb.2012.02.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2011] [Revised: 02/01/2012] [Accepted: 02/03/2012] [Indexed: 01/08/2023]
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Góth L, Nagy T, Kósa Z, Fejes Z, Bhattoa HP, Paragh G, Káplár M. Effects of rs769217 and rs1001179 polymorphisms of catalase gene on blood catalase, carbohydrate and lipid biomarkers in diabetes mellitus. Free Radic Res 2012; 46:1249-57. [DOI: 10.3109/10715762.2012.702899] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Nagy T, Csordás M, Kósa Z, Góth L. A simple method for examination of polymorphisms of catalase exon 9: rs769217 in Hungarian microcytic anemia and beta-thalassemia patients. Arch Biochem Biophys 2012; 525:201-6. [PMID: 22286031 DOI: 10.1016/j.abb.2012.01.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Revised: 01/04/2012] [Accepted: 01/10/2012] [Indexed: 01/02/2023]
Abstract
Catalase decreases the high, toxic concentrations of hydrogen peroxide but it lets the physiological, low concentrations in the cells mainly for signaling purposes. Its decreased activity may contribute to development of several pathological conditions. Catalase mutations occur frequently in exon 9, these were examined with different, complicated and costly methods. The aim of the current study was to evaluate a method for screening of polymorphisms in catalase exon 9. We used the slab gel electrophoresis of PCR amplicons without denaturation and silver staining for visualization of the DNA bands. We detected extra DNA bands in the 400-800 bp region of the catalase exon 9. Their single stranded nature was proved with nucleotide sequence analyses, comparison with the standard SSCP, staining with Sybr Green II and Sybr Green I, ethidium bromide, no digestion with RFLP (BstX I), and digestion with plant nuclease. We used this method for examination of polymorphisms of catalase exon 9 in microcytic anemia and beta-thalassemia patients. The lowest blood catalase activities were detected in microcytic anemia and beta-thalassemia patients with the TT genotypes of the C111T polymorphism. This method was sensitive for detection of G113A acatalasemia mutation, but poorly detected C37T and G5A acatalasemia mutations.
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Affiliation(s)
- Teréz Nagy
- Department of Biomedical Laboratory and Imaging Science, Medical and Health Science Center, University of Debrecen, P.O. Box 55, Debrecen H-4012, Hungary
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Kósa Z, Nagy T, Nagy E, Fazakas F, Góth L. Decreased blood catalase activity is not related to specific beta-thalassemia mutations in Hungary. Int J Lab Hematol 2011; 34:172-8. [PMID: 21985133 DOI: 10.1111/j.1751-553x.2011.01377.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
INTRODUCTION Thalassemia erythrocytes are exposed to oxidative stress especially to hydrogen peroxide, which is regulated with the enzyme catalase. The aim of this study was to examine blood catalase activity and the relationship of blood catalase and beta-thalassemia gene mutations. METHODS Blood catalase activity, hemoglobin, HbA(2) , HbF, and beta-globin gene mutations were determined in 43 Hungarian patients with beta-thalassemia trait. RESULTS Compared to controls, the beta-thalassemia trait patients showed a low mean (P < 0.001) of blood catalase (men: 84 ± 29 MU/L vs. sex-matched controls: 118 ± 18 MU/L and women: 74 ± 18 MU/L vs. 108 ± 114 MU/L) and a low mean of blood catalase-to-blood hemoglobin ratio (men: 0.72 ± 0.22 MU/g vs. 0.85 ± 0.12 MU/g, women: 0.77 ± 0.26 MU/g vs. 0.84 ± 0.11 MU/g). The HbA(2) determination showed high sensitivity and specificity for the detection of beta-thalassemia trait patients. Mutation analyses revealed 13 beta-thalassemia trait mutations, of which six have not been reported before in Hungarian beta-thalassemia trait patients. Each group of mutations revealed decreased (P < 0.01) mean of blood catalase and catalase-to-hemoglobin ratio. Acatalasemia mutations were not found in beta-thalassemia trait patients. CONCLUSION The decrease in blood catalase activity might be due to the damaging effects of free radicals on the catalase protein. Consequently, these beta-thalassemia trait patients may be relatively susceptible to damage caused by oxidative stress.
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Affiliation(s)
- Z Kósa
- Department of Biomedical Laboratory and Imaging Science, Faculty of Medicine, Medical and Health Science Center, University of Debrecen, Debrecen, Hungary
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Mudarra Rubio A, Montes-Bayón M, Blanco-González E, Sanz-Medel A. Sample preparation strategies for quantitative analysis of catalase in red blood cells by elemental mass spectrometry. Metallomics 2010; 2:638-45. [DOI: 10.1039/c0mt00003e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Zitta K, Meybohm P, Bein B, Rodde C, Steinfath M, Scholz J, Albrecht M. Hypoxia-induced cell damage is reduced by mild hypothermia and postconditioning with catalase in-vitro: application of an enzyme based oxygen deficiency system. Eur J Pharmacol 2009; 628:11-8. [PMID: 19917279 DOI: 10.1016/j.ejphar.2009.11.023] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2009] [Revised: 10/29/2009] [Accepted: 11/10/2009] [Indexed: 11/30/2022]
Abstract
Mild hypothermia and pharmacological postconditioning are widespread therapeutical treatment options that positively influence the clinical outcome after tissue hypoxia. In the study presented, a two-enzyme based in-vitro oxygen deficiency model in combination with cultured HT-1080 fibrosarcoma cells was employed to mimic the in-vivo situation of hypoxia and to evaluate the influence of mild hypothermia and postconditioning with catalase on hypoxia-mediated cell damage. Using the in-vitro oxygen deficiency model, partial pressure of oxygen was rapidly reduced to levels below 5mmHg in the culture media and cells responded with an increased expression of hypoxia inducible factor-1 on protein level. Hypoxia resulted in significant cell rounding and retraction of cytoplasmic cell extensions. Evaluation of cytotoxicity revealed a 3.5-fold increase in lactate dehydrogenase levels which was accompanied by 40-fold elevated levels of hydrogen peroxide. The hypoxia-induced increase of lactate dehydrogenase was 2.5-fold reduced in the hypothermia group, although morphological correlates of cytotoxicity were still visible. Hypothermia did not significantly influence hydrogen peroxide concentrations in the culture media. Pharmacological postconditioning with catalase however dose-dependently decreased hypoxia-induced lactate dehydrogenase release. This cytoprotective effect was accompanied by a dose-dependent, up to 50-fold reduction of hydrogen peroxide concentrations and retention of normal cell morphology. We suggest that the described in-vitro oxygen deficiency model is a convenient and simple culture system for the investigation of cellular and subcellular events associated with oxygen deficiency. Moreover, our in-vitro results imply that catalase postconditioning may be a promising approach to attenuate hypoxia-induced and hydrogen peroxide-mediated cell and tissue damage.
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Affiliation(s)
- Karina Zitta
- Department of Anesthesiology and Intensive Care Medicine, University Hospital Schleswig-Holstein, Kiel, Germany
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Tarnai I, Csordás M, Sükei E, Shemirani AH, Káplár M, Góth L. Effect of C111T polymorphism in exon 9 of the catalase gene on blood catalase activity in different types of diabetes mellitus. Free Radic Res 2007; 41:806-11. [PMID: 17577741 DOI: 10.1080/10715760701381778] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Hydrogen peroxide plays a major role in the pathomechanism of diabetes mellitus and its main regulator is enzyme catalase. The blood catalase and the C111T polymorphism in exon 9 was examined in type 1, type 2 and gestational diabetes mellitus. Compared to the control group (104.7 +/- 18.5 MU/l) significantly decreased (p < 0.001) blood catalase activities were detected in type 2 (71.2 +/- 14.6 MU/l), gestational (68.5 +/- 12.2 MU/l) diabetes mellitus and without change in type 1 (102.5 +/- 26.9 MU/l). The blood catalase decreased (p = 0.043) with age for type 2 diabetics and did not change (p>0.063) for type 1, gestational diabetic patients and controls. Blood catalase showed a weak association with hemoglobin A1c for type 1 diabetic patients (r = 0.181, increasing). The mutant T allele was increased in type 1 and gestational diabetes mellitus, and CT+TT genotypes showed decreased blood catalase activity for type 1 and increased activities for type 2 diabetic patients. The C111T polymorphism may implicate a very weak effect on blood catalase activity in different types of diabetes mellitus.
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MESH Headings
- Adult
- Catalase/blood
- Catalase/genetics
- Cytosine
- Diabetes Mellitus, Type 1/blood
- Diabetes Mellitus, Type 1/enzymology
- Diabetes Mellitus, Type 1/genetics
- Diabetes Mellitus, Type 2/blood
- Diabetes Mellitus, Type 2/enzymology
- Diabetes Mellitus, Type 2/genetics
- Diabetes, Gestational/blood
- Diabetes, Gestational/enzymology
- Diabetes, Gestational/genetics
- Exons
- Female
- Glycated Hemoglobin/metabolism
- Humans
- Male
- Polymorphism, Single Nucleotide
- Pregnancy
- Reference Values
- Thymine
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Affiliation(s)
- I Tarnai
- Department of Clinical Analytical Chemistry, Medical and Health Science Center, University of Debrecen, Debrecen, Hungary
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Góth L, Tóth Z, Tarnai I, Bérces M, Török P, Bigler WN. Blood catalase activity in gestational diabetes is decreased but not associated with pregnancy complications. Clin Chem 2006; 51:2401-4. [PMID: 16306111 DOI: 10.1373/clinchem.2005.055517] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Laszlo Góth
- Department of Clinical Biochemistry, Molecular Pathology, and Clinical Analytical Chemistry, Neonatal Intensive Care Unit, Medical and Health Science Center, University of Debrecen, Hungary.
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Góth L, Vitai M, Rass P, Sükei E, Páy A. Detection of a novel familial catalase mutation (Hungarian type D) and the possible risk of inherited catalase deficiency for diabetes mellitus. Electrophoresis 2005; 26:1646-9. [PMID: 15800961 DOI: 10.1002/elps.200410384] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The enzyme catalase is the main regulator of hydrogen peroxide metabolism. Recent findings suggest that a low concentration of hydrogen peroxide may act as a messenger in some signalling pathways whereas high concentrations are toxic for many cells and cell components. Acatalasemia is a genetically heterogeneous condition with a worldwide distribution. Yet only two Japanese and three Hungarian syndrome-causing mutations have been reported. A large-scale (23 130 subjects) catalase screening program in Hungary yielded 12 hypocatalasemic families. The V family with four hypocatalasemics (60.6 +/- 7.6 MU/L) and six normocatalasemic (103.6 +/- 23.5 MU/L) members was examined to define the mutation causing the syndrome. Mutation screening yielded four novel polymorphisms. Of these, three intron sequence variations, namely G-->A at the nucleotide 60 position in intron 1, T-->A at position 11 in intron 2, and G-->T at position 31 in intron 12, are unlikely to be responsible for the decreased blood catalase activity. However, the novel G-->A mutation in exon 9 changes the essential amino acid Arg 354 to Cys 354 and may indeed be responsible for the decreased catalase activity. This inherited catalase deficiency, by inducing an increased hydrogen peroxide steady-state concentration in vivo, may be involved in the early manifestation of type 2 diabetes mellitus for the 35-year old proband.
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Affiliation(s)
- László Góth
- Department of Clinical Biochemistry, Molecular Pathology, and Clinical Analytical Chemistry, University of Debrecen, Medical and Health Science Center, H-4012 Debrecen, Hungary.
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Abstract
Enzyme catalase seems to be the main regulator of hydrogen peroxide metabolism. Hydrogen peroxide at high concentrations is a toxic agent, while at low concentrations it appears to modulate some physiological processes such as signaling in cell proliferation, apoptosis, carbohydrate metabolism, and platelet activation. Benign catalase gene mutations of 5' noncoding region (15) and intron 1 (4) have no effect on catalase activity and are not associated with disease. Catalase gene mutations have been detected in association with diabetes mellitus, hypertension, and vitiligo. Decreases in catalase activity in patients with tumors is more likely to be due to decreased enzyme synthesis rather than to catalase mutations.Acatalasemia, the inherited deficiency of catalase has been detected in 11 countries. Its clinical features might be oral gangrene, altered lipid, carbohydrate, homocysteine metabolism and the increased risk of diabetes mellitus. The Japanese, Swiss, and Hungarian types of acatalasemia display differences in biochemical and genetic aspects. However, there are only limited reports on the syndrome causing these mutations. These data show that acatalasemia may be a syndrome with clinical, biochemical, genetic characteristics rather than just a simple enzyme deficiency.
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Affiliation(s)
- László Góth
- Department of Clinical Analytical Chemistry, Medical and Health Science Center, University of Debrecen, Debrecen, Hungary.
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Góth L, Vitai M. The effects of hydrogen peroxide promoted by homocysteine and inherited catalase deficiency on human hypocatalasemic patients. Free Radic Biol Med 2003; 35:882-8. [PMID: 14556852 DOI: 10.1016/s0891-5849(03)00435-0] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Elevated plasma homocysteine can generate oxygen free radicals and hydrogen peroxide. The enzyme catalase is involved in the protection against hydrogen peroxide. We examined the effect of oxidative stress promoted by homocysteine on erythrocyte metabolism (blood hemoglobin, MCV, folate, B12, serum LDH, LDH isoenzymes, haptoglobin) in the oxidative stress sensitive Hungarian patients with inherited catalase deficiency. The plasma homocysteine (HPLC method, Bio-Rad), folate, B12 (capture binding assay, Abbott), blood hemoglobin concentrations, blood catalase activity (spectrophotometric assay of hydrogen peroxide), and MCV values were determined in 7 hypocatalasemic families including hypocatalasemic (male:12, female:18) patients and their results were compared to those of the normocatalasemic (male:17 female: 12) family members. We found decreased (p <.036) folate (ng/ml) concentrations (male hypocatalasemic 5.44 +/- 2.81 vs. normocatalasemic 7.56 +/- 1.97, female 5.01 +/- 1.93 vs. 6.61 +/- 1.91), blood hemoglobin (p <.010, male:140.2 +/- 11.0 vs. 153.6 +/- 11.6 g/l, female: 128.4 +/- 10.9 vs. 139.6 +/- 9.2 g/l). Increased levels of MCV (p <.001) were detected in hypocatalasemic patients (male: 98.6 +/- 3.4 vs. 90.1 +/- 7.5 fl, female: 95.9 +/- 3.9 vs. 90.1 +/- 2.5 fl), plasma homocysteine (p <.049, male: 9.72 +/- 3.61 vs. 7.36 +/- 2.10 umol/l, female: 9.06 +/- 3.10 vs. 6.84 +/- 2.50 umol/l) and not significant (p >.401) plasma B12 (male: 336 +/- 108 vs. 307 +/- 76 pg/ml, female: 373 +/- 180 vs. 342 +/- 75 pg/ml). The serum markers of hemolysis (LDH, LDH isoenzymes, haptoglobin) did not show significant (p >.228) signs of oxidative erythrocyte damage. We report firstly on increased plasma homocysteine concentrations in inherited catalase deficiency. The increased plasma homocysteine and inherited catalase deficiency together could promote oxidative stress via hydrogen peroxide. The patients with inherited catalase deficiency are more sensitive to oxidative stress of hydrogen peroxide than the normocatalasemic family members. This oxidative stress might be responsible for the decreased concentration of the blood hemoglobin via the oxidation sensitive folate and may contribute to the early development of arteriosclerosis and diabetes in these patients.
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Affiliation(s)
- László Góth
- Departments of Clinical Biochemistry and Molecular Pathology and Clinical Analytical Chemistry, Medical and Health Science Center, University of Debrecen, Debrecen, Hungary.
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Góth L. A novel catalase mutation (a G insertion in exon 2) causes the type B of the Hungarian acatalasemia. Clin Chim Acta 2001; 311:161-3. [PMID: 11603354 DOI: 10.1016/s0009-8981(01)00609-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Góth L. A new type of inherited catalase deficiencies: its characterization and comparison to the Japanese and Swiss type of acatalasemia. Blood Cells Mol Dis 2001; 27:512-7. [PMID: 11500062 DOI: 10.1006/bcmd.2001.0415] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Thirteen Hungarian families that exhibited inherited catalase deficiencies have been detected. Differences between the deficiencies reported from Hungary and the previously reported Swiss acatalasemia were characterized using biochemical analysis of the catalase proteins. Molecular biological methods were used to compare the previously reported types of catalase deficiencies in Japan and the Hungarian deficiencies. Three mutations (a GA insertion in exon 2, a G insertion in exon 2, and a T to G substitution in intron 7) are responsible for decreased catalase activity in 7 of the 13 Hungarian kindreds; the other 6 families have not yet been characterized. These are not the mutations observed in Japan. Changes in lipid and carbohydrate metabolism and the high incidence (12.7%) of diabetes mellitus in the Hungarian kindreds suggest that individuals with inherited catalase deficiency are at risk of atherosclerosis and diabetes mellitus. The Hungarian subjects were detected during screening of a large population for catalase activity; no overt disease state was associated with the deficiencies. We hypothesize that the increased risk of disease may be due to prolonged exposure to elevated levels of blood hydrogen peroxide due to the lack of normal removal of hydrogen peroxide by blood catalase.
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Affiliation(s)
- L Góth
- Department of Clinical Biochemistry and Molecular Pathology, University of Debrecen, Hungary.
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Góth L, Rass P, Madarasi I. A novel catalase mutation detected by polymerase chain reaction-single strand conformation polymorphism, nucleotide sequencing, and western blot analyses is responsible for the type C of Hungarian acatalasemia. Electrophoresis 2001; 22:49-51. [PMID: 11197178 DOI: 10.1002/1522-2683(200101)22:1<49::aid-elps49>3.0.co;2-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Polymerase chain reaction-single strand conformation polymorphism (PCR-SSCP) screening was used for searching mutations of the catalase gene in two Hungarian hypocatalasemic families. A syndrome-causing mutation was found in a PCR product containing exon 7 and its boundaries. Nucleotide sequence analyses detected a G to T substitution at position 5 of intron 7. The effect of this splice site mutation was confirmed by Western blot analyses demonstrating a decreased catalase protein level in these patients. These findings represent a novel type (C) of catalase mutations in the Hungarian acatalasemic/hypocatalasemic patients.
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Affiliation(s)
- L Góth
- Department of Clinical Biochemistry and Molecular Pathology, Medical School, University of Debrecen, Debrecen, Hungary.
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Góth L, Gorzsás A, Kalmár T. A Simple PCR-Heteroduplex Screening Method for Detection of a Common Mutation of the Catalase Gene in Hungary. Clin Chem 2000. [DOI: 10.1093/clinchem/46.8.1199] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- László Góth
- Department of Clinical Biochemistry and Molecular Pathology, Medical School, University of Debrecen, PO Box 40, H-4012 Debrecen, Hungary
| | - András Gorzsás
- Department of Clinical Biochemistry and Molecular Pathology, Medical School, University of Debrecen, PO Box 40, H-4012 Debrecen, Hungary
| | - Tibor Kalmár
- Department of Genetics, Biological Research Institute, PO Box 521, H-6701 Szeged, Hungary
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Affiliation(s)
- László Góth
- Department of Clinical Biochemistry and Molecular Pathology, University of Debrecen Medical School, PO Box 40, Debrecen, Hungary H-4012; fax 36-52-451-331, e-mail
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Góth L. Genetic heterogeneity of the 5' uncoding region of the catalase gene in Hungarian acatalasemic and hypocatalasemic subjects. Clin Chim Acta 1998; 271:73-8. [PMID: 9564558 DOI: 10.1016/s0009-8981(97)00243-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The 5' uncoding region (165 bp), exon 1 (63 bp) and part of intron 1 (20 bp) of the catalase gene was amplified by PCR in acatalasemic (2), hypocatalasemic (19) patients and healthy individuals (10). The single strand conformational polymorphism of PCR products showed a highly polymorphic pattern. This polymorphism was supported by nucleotide sequence analyses yielding eight mutations. They are A to T, C to A and C to T at positions -21, -20, -18 of the 5' flanking region, T to C at positions 4, 44, 49 of the non-coding region and C to T and C to A at positions 12, 27 of exon 1. Of these nucleotide substitutions, the fourth, fifth, seventh and eighth are novel mutations. The mutations 1, 3, 6, 8 were present at least at heterozygous level in all acatalasemics and hypocatalasemics. None of these mutations may be the causal mutation(s) of acatalasemia as each of these nucleotide substitutions were detected in healthy subjects with normal blood catalase activity.
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Affiliation(s)
- L Góth
- Department of Clinical Chemistry, University Medical School, Debrecen, Hungary
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Abstract
A T-deletion at position 10 of exon 4 for catalase gene was reported as a novel mutation, causing a new genetic type of acatalasemia in Japan. This mutation, destroying a Hinf1 recognition site, was searched for in Hungarian acatalasemic (2) and hypocatalasemic (22) patients and in controls (27) by Hinf1 digestion and sequence analyses of a 203 bp polymerase chain reaction (PCR) product containing the entire exon 4. The Hinf1 polymorphism did not reveal any difference between controls and hypocatalasemic as well as acatalasemic patients. These results were confirmed by sequence analyses showing the T nucleotide for the two acatalasemic and for one unrelated hypocatalasemic patient, as well as for two controls. These findings represent further evidence that acatalasemia is heterogeneous at the DNA level.
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Affiliation(s)
- L Góth
- Department of Clinical Chemistry, Medical School, University of Debrecen, Hungary.
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