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Volumn 335, Issue 1-2, 2010, Pages 119-125

Increased liver oxidative stress and altered PUFA metabolism precede development of non-alcoholic steatohepatitis in SREBP-1a transgenic spontaneously hypertensive rats with genetic predisposition to hepatic steatosis

Author keywords

Fatty acid composition; Hepatic steatosis; Non alcoholic steatohepatitis; Oxidative stress; SREBP 1a transgenic spontaneously hypertensive rat

Indexed keywords

ALKADIENE; ALPHA TOCOPHEROL; GAMMA TOCOPHEROL; GLUTATHIONE; OMEGA 3 FATTY ACID; OMEGA 6 FATTY ACID; SATURATED FATTY ACID; STEROL REGULATORY ELEMENT BINDING PROTEIN 1A; THIOBARBITURIC ACID REACTIVE SUBSTANCE;

EID: 75949129512     PISSN: 03008177     EISSN: 15734919     Source Type: Journal    
DOI: 10.1007/s11010-009-0248-5     Document Type: Article
Times cited : (26)

References (36)
  • 1
    • 33747517955 scopus 로고    scopus 로고
    • The epidemiology of nonalcoholic fatty liver disease in adults
    • 16540768
    • JM Clark 2006 The epidemiology of nonalcoholic fatty liver disease in adults J Clin Gastroenterol 40 3 Suppl 1 S5 S10 16540768
    • (2006) J Clin Gastroenterol , vol.40 , Issue.3 SUPPL. 1
    • Clark, J.M.1
  • 2
    • 39849099669 scopus 로고    scopus 로고
    • Non-alcoholic fatty liver disease and the metabolic syndrome: An update
    • DOI 10.3748/wjg.14.185
    • RS Rector JP Thyfault Y Wei JA Ibdah 2008 Non-alcoholic fatty liver disease and the metabolic syndrome: an update World J Gastroenterol 14 185 192 10.3748/wjg.14.185 1:CAS:528:DC%2BD1cXjsFyksbY%3D 18186553 (Pubitemid 351314297)
    • (2008) World Journal of Gastroenterology , vol.14 , Issue.2 , pp. 185-192
    • Rector, R.S.1    Thyfault, J.P.2    Wei, Y.3    Ibdah, J.A.4
  • 3
    • 47849087880 scopus 로고    scopus 로고
    • Nonalcoholic fatty liver disease: An overview of current insights in pathogenesis, diagnosis and treatment
    • DOI 10.3748/wjg.14.2474
    • TC Schreuder BJ Verwer CM van Nieuwkerk CJ Mulder 2008 Nonalcoholic fatty liver disease: an overview of current insights in pathogenesis, diagnosis and treatment World J Gastroenterol 14 2474 2486 10.3748/wjg.14.2474 1:CAS:528:DC%2BD1cXptlWgs7s%3D 18442193 (Pubitemid 352037734)
    • (2008) World Journal of Gastroenterology , vol.14 , Issue.16 , pp. 2474-2486
    • Schreuder, T.C.M.A.1    Verwer, B.J.2    Van Nieuwkerk, C.M.J.3    Mulder, C.J.J.4
  • 4
    • 0031947715 scopus 로고    scopus 로고
    • Steatohepatitis: A tale of two 'Hits'?
    • DOI 10.1016/S0016-5085(98)70599-2
    • CP Day OFW James 1998 Steatohepatitis: a tale of two ''hits''? Gastroenterology 114 842 845 10.1016/S0016-5085(98)70599-2 1:STN:280: DyaK1c3htFartQ%3D%3D 9547102 (Pubitemid 28160420)
    • (1998) Gastroenterology , vol.114 , Issue.I4 , pp. 842-845
    • Day, C.P.1    James, O.F.W.2
  • 5
    • 12144284997 scopus 로고    scopus 로고
    • Oxidative stress in nonalcoholic fatty liver disease: Pathogenesis and antioxidant therapies
    • 1:CAS:528:DC%2BD2MXhsFaisLY%3D 15682682
    • S Gawrieh EC Opara TR Koch 2004 Oxidative stress in nonalcoholic fatty liver disease: pathogenesis and antioxidant therapies J Investig Med 52 506 514 1:CAS:528:DC%2BD2MXhsFaisLY%3D 15682682
    • (2004) J Investig Med , vol.52 , pp. 506-514
    • Gawrieh, S.1    Opara, E.C.2    Koch, T.R.3
  • 6
    • 33751193496 scopus 로고    scopus 로고
    • Insulin resistance and oxidative stress interdependency in non-alcoholic fatty liver disease
    • DOI 10.1016/j.molmed.2006.10.001, PII S147149140600222X
    • LA Videla R Rodrigo J Araya J Poniachik 2006 Insulin resistance and oxidative stress interdependency in non-alcoholic fatty liver disease Trend Mol Med 12 555 558 10.1016/j.molmed.2006.10.001 1:CAS:528:DC%2BD28Xht1CqtbvL (Pubitemid 44780196)
    • (2006) Trends in Molecular Medicine , vol.12 , Issue.12 , pp. 555-558
    • Videla, L.A.1    Rodrigo, R.2    Araya, J.3    Poniachik, J.4
  • 7
    • 0025260531 scopus 로고
    • Fatty liver hepatitis (steatohepatitis) and obesity: An autopsy study with analysis of risk factors
    • 10.1002/hep.1840120505 1:STN:280:DyaK3M%2FjtlGqsQ%3D%3D 2227807
    • IR Wanless JS Lentz 1990 Fatty liver hepatitis (steatohepatitis) and obesity: an autopsy study with analysis of risk factors Hepatology 12 1106 1110 10.1002/hep.1840120505 1:STN:280:DyaK3M%2FjtlGqsQ%3D%3D 2227807
    • (1990) Hepatology , vol.12 , pp. 1106-1110
    • Wanless, I.R.1    Lentz, J.S.2
  • 9
    • 2942706241 scopus 로고    scopus 로고
    • Increase in long-chain polyunsaturated fatty acid n-6/n-3 ratio in relation to hepatic steatosis in patients with non-alcoholic fatty liver disease
    • DOI 10.1042/CS20030326
    • J Araya R Rodrigo LA Videla L Thielemann M Orellana P Pettinelli J Poniachik 2004 Increase in long-chain polyunsaturated fatty acid n-6/n-3 ratio in relation to hepatic steatosis in patients with non-alcoholic fatty liver disease Clin Sci (Lond) 106 635 643 10.1042/CS20030326 1:CAS:528: DC%2BD2cXksFyht7Y%3D (Pubitemid 38797577)
    • (2004) Clinical Science , vol.106 , Issue.6 , pp. 635-643
    • Araya, J.1    Rodrigo, R.2    Videla, L.A.3    Thielemann, L.4    Orellana, M.5    Pettinelli, P.6    Poniachik, J.7
  • 10
    • 48649110854 scopus 로고    scopus 로고
    • The role of fatty acids in the development and progression of nonalcoholic fatty liver disease
    • 10.1016/j.jnutbio.2007.10.001 1:CAS:528:DC%2BD1cXps12isLo%3D 18430557
    • CL Gentile MJ Pagliassotti 2008 The role of fatty acids in the development and progression of nonalcoholic fatty liver disease J Nutr Biochem 19 567 576 10.1016/j.jnutbio.2007.10.001 1:CAS:528:DC%2BD1cXps12isLo%3D 18430557
    • (2008) J Nutr Biochem , vol.19 , pp. 567-576
    • Gentile, C.L.1    Pagliassotti, M.J.2
  • 11
    • 18244385206 scopus 로고    scopus 로고
    • A new transgenic rat model of hepatic steatosis and the metabolic syndrome
    • DOI 10.1161/01.HYP.0000161995.64192.2b
    • NR Qi J Wang V Zidek V Landa P Mlejnek L Kazdová M Pravenec TW Kurtz 2005 A new transgenic rat model of hepatic steatosis and the metabolic syndrome Hypertension 45 1004 1011 10.1161/01.HYP.0000161995.64192.2b 1:CAS:528:DC%2BD2MXjtlymu7g%3D 15809359 (Pubitemid 40628951)
    • (2005) Hypertension , vol.45 , Issue.5 , pp. 1004-1011
    • Qi, N.R.1    Wang, J.2    Zidek, V.3    Landa, V.4    Mlejnek, P.5    Kazdova, L.6    Pravenec, M.7    Kurtz, T.W.8
  • 12
    • 0017067684 scopus 로고
    • Superoxide dismutase in red blood cells: Method of assay and enzyme content in normal subjects and in patients with beta-thalassemia (major and intermedia)
    • 1:CAS:528:DyaE28XksValu70%3D 932520
    • A Concetti P Massei G Rotilio M Brunori EA Rachmilewitz 1976 Superoxide dismutase in red blood cells: method of assay and enzyme content in normal subjects and in patients with beta-thalassemia (major and intermedia) J Lab Clin Med 87 1057 1064 1:CAS:528:DyaE28XksValu70%3D 932520
    • (1976) J Lab Clin Med , vol.87 , pp. 1057-1064
    • Concetti, A.1    Massei, P.2    Rotilio, G.3    Brunori, M.4    Rachmilewitz, E.A.5
  • 13
    • 0021318441 scopus 로고
    • Catalase in vitro
    • 10.1016/S0076-6879(84)05016-3 1:CAS:528:DyaL2cXltVKis7s%3D 6727660
    • H Aebi 1984 Catalase in vitro Methods Enzymol 105 121 126 10.1016/S0076-6879(84)05016-3 1:CAS:528:DyaL2cXltVKis7s%3D 6727660
    • (1984) Methods Enzymol , vol.105 , pp. 121-126
    • Aebi, H.1
  • 14
    • 0032064034 scopus 로고    scopus 로고
    • Immunohistochemical localization of apolipoprotein B-100 (ApoB-100) and expression of glutathione peroxidase (GSH-PO) in canine atherosclerotic lesions
    • 1:CAS:528:DyaK1cXjtFygsL0%3D 9598588
    • Y Kagawa E Uchida H Yokota M Yamaguchi H Taniyama 1998 Immunohistochemical localization of apolipoprotein B-100 (ApoB-100) and expression of glutathione peroxidase (GSH-PO) in canine atherosclerotic lesions Vet Pathol 35 227 229 1:CAS:528:DyaK1cXjtFygsL0%3D 9598588
    • (1998) Vet Pathol , vol.35 , pp. 227-229
    • Kagawa, Y.1    Uchida, E.2    Yokota, H.3    Yamaguchi, M.4    Taniyama, H.5
  • 15
    • 0014428865 scopus 로고
    • Estimation of total, protein-bound, and non-protein sulfhydryl groups in tissue with Elman's reagent
    • 10.1016/0003-2697(68)90092-4 1:CAS:528:DyaF1MXhslCktA%3D%3D 4973948
    • J Sedlak RH Lindsay 1968 Estimation of total, protein-bound, and non-protein sulfhydryl groups in tissue with Elman's reagent Anal Biochem 25 192 205 10.1016/0003-2697(68)90092-4 1:CAS:528:DyaF1MXhslCktA%3D%3D 4973948
    • (1968) Anal Biochem , vol.25 , pp. 192-205
    • Sedlak, J.1    Lindsay, R.H.2
  • 16
    • 0021961166 scopus 로고
    • Systemic complement activation, lung injury and products of lipid peroxidation
    • 10.1172/JCI112001 1:CAS:528:DyaL2MXlsFyrsr8%3D 4031060
    • PJ Ward GO Pill JR Hatherill 1985 Systemic complement activation, lung injury and products of lipid peroxidation J Clin Invest 76 517 527 10.1172/JCI112001 1:CAS:528:DyaL2MXlsFyrsr8%3D 4031060
    • (1985) J Clin Invest , vol.76 , pp. 517-527
    • Ward, P.J.1    Pill, G.O.2    Hatherill, J.R.3
  • 17
    • 0023835142 scopus 로고
    • Stimulated arachidonate metabolism during foam cell transformation of mouse peritoneal macrophages with oxidized low density lipoprotein
    • 10.1172/JCI113377 1:CAS:528:DyaL1cXitF2ktb4%3D 3125226
    • M Yokode T Kita Y Kikawa T Ogorochi S Narumiya C Kawai 1988 Stimulated arachidonate metabolism during foam cell transformation of mouse peritoneal macrophages with oxidized low density lipoprotein J Clin Invest 81 720 729 10.1172/JCI113377 1:CAS:528:DyaL1cXitF2ktb4%3D 3125226
    • (1988) J Clin Invest , vol.81 , pp. 720-729
    • Yokode, M.1    Kita, T.2    Kikawa, Y.3    Ogorochi, T.4    Narumiya, S.5    Kawai, C.6
  • 18
    • 0022558994 scopus 로고
    • An HPLC method for the simultaneous determination of retinol and alpha-tocopherol in plasma or serum
    • 10.1016/S0076-6879(86)23025-6 1:CAS:528:DyaL28XkslGisrk%3D 3702714
    • GL Catignani 1986 An HPLC method for the simultaneous determination of retinol and alpha-tocopherol in plasma or serum Methods Enzymol 123 215 219 10.1016/S0076-6879(86)23025-6 1:CAS:528:DyaL28XkslGisrk%3D 3702714
    • (1986) Methods Enzymol , vol.123 , pp. 215-219
    • Catignani, G.L.1
  • 19
    • 0034989346 scopus 로고    scopus 로고
    • Simultaneous determination of alpha- and gamma-tocopherol and their quinones in rats plasma and tissues using reversed-phase high performance liquid chromatography
    • 1:CAS:528:DC%2BD3MXktlKmtb0%3D 11508699
    • C Kiyose H Saito H Ueda O Igarashi 2001 Simultaneous determination of alpha- and gamma-tocopherol and their quinones in rats plasma and tissues using reversed-phase high performance liquid chromatography J Nutr Sci Vitaminol 47 102 107 1:CAS:528:DC%2BD3MXktlKmtb0%3D 11508699
    • (2001) J Nutr Sci Vitaminol , vol.47 , pp. 102-107
    • Kiyose, C.1    Saito, H.2    Ueda, H.3    Igarashi, O.4
  • 20
    • 70449158340 scopus 로고
    • A simple method for the isolation and purification of total lipides from animal tissues
    • 1:STN:280:DyaG2s%2FnsFCjtw%3D%3D 13428781
    • J Folch M Lees GH Sloane Stanley 1957 A simple method for the isolation and purification of total lipides from animal tissues J Biol Chem 226 497 509 1:STN:280:DyaG2s%2FnsFCjtw%3D%3D 13428781
    • (1957) J Biol Chem , vol.226 , pp. 497-509
    • Folch, J.1    Lees, M.2    Sloane Stanley, G.H.3
  • 21
    • 14844351851 scopus 로고    scopus 로고
    • Levels of serum vitamin A, alpha-tocopherol and malondialdehyde in patients with non-alcoholic steatohepatitis: Relationship with histopathologic severity
    • DOI 10.1111/j.1742-1241.2004.00312.x
    • IH Bahcecioglu M Yalniz N IIhau H Ataseven IH Ozercan 2005 Levels of serum vitamin A, alpha-tocopherol and malondialdehyde in patients with non-alcoholic steatohepatitis: relationship with histopathologic severity Int J Clin Pract 59 318 323 10.1111/j.1742-1241.2004.00312.x 1:CAS:528: DC%2BD2MXivFWhu7w%3D 15857329 (Pubitemid 40352749)
    • (2005) International Journal of Clinical Practice , vol.59 , Issue.3 , pp. 318-323
    • Bahcecioglu, I.H.1    Yalniz, M.2    Ilhan, N.3    Ataseven, H.4    Ozercan, I.H.5
  • 23
    • 36649015221 scopus 로고    scopus 로고
    • Immunomodulation by omega-3 fatty acids
    • DOI 10.1016/j.plefa.2007.10.015, PII S095232780700141X, Proceedings of the 8th Fatty Acid and Cell Signaling (FACS Workshop held in Quebec City on June 26-28, 2007 Polyunsaturates, Inflammation and Brain Function
    • PC Calder 2007 Immunomodulation by omega-3 fatty acids Prostaglandins Leukot Essent Fatty Acids 77 327 335 10.1016/j.plefa.2007.10.015 1:CAS:528:DC%2BD2sXhsVWjtrjK 18032006 (Pubitemid 350198856)
    • (2007) Prostaglandins Leukotrienes and Essential Fatty Acids , vol.77 , Issue.5-6 , pp. 327-335
    • Calder, P.C.1
  • 24
    • 0034086202 scopus 로고    scopus 로고
    • Regulation of hepatic Δ-6 desaturase expression and its role in the polyunsaturated fatty acid inhibition of fatty acid synthase gene expression in mice
    • 1:CAS:528:DC%2BD3cXjsl2huro%3D 10827210
    • MT Nakamura HP Cho SD Clarke 2000 Regulation of hepatic Δ-6 desaturase expression and its role in the polyunsaturated fatty acid inhibition of fatty acid synthase gene expression in mice J Nutr 130 1561 1565 1:CAS:528:DC%2BD3cXjsl2huro%3D 10827210
    • (2000) J Nutr , vol.130 , pp. 1561-1565
    • Nakamura, M.T.1    Cho, H.P.2    Clarke, S.D.3
  • 25
    • 31544471650 scopus 로고    scopus 로고
    • Dietary (n-3) long chain polyunsaturated fatty acids prevent sucrose-induced insulin resistance in rats
    • 1:CAS:528:DC%2BD2MXht1CgtrzL 16253960
    • G Ghafoorunissa A Ibrahim L Rajkumar V Acharya 2005 Dietary (n-3) long chain polyunsaturated fatty acids prevent sucrose-induced insulin resistance in rats J Nutr 135 2634 2638 1:CAS:528:DC%2BD2MXht1CgtrzL 16253960
    • (2005) J Nutr , vol.135 , pp. 2634-2638
    • Ghafoorunissa, G.1    Ibrahim, A.2    Rajkumar, L.3    Acharya, V.4
  • 26
    • 33845490816 scopus 로고    scopus 로고
    • Effects of altering the ratio of dietary n-6 to n-3 fatty acids on insulin sensitivity, lipoprotein size, and postprandial lipemia in men and postmenopausal women aged 45-70 y: The OPTILIP Study
    • 1:CAS:528:DC%2BD28XhtlGrurvM 17158408
    • MD Griffin TA Sanders IG Davies LM Morgan DJ Millward F Lewis S Slaughter JA Cooper GJ Miller BA Griffin 2006 Effects of altering the ratio of dietary n-6 to n-3 fatty acids on insulin sensitivity, lipoprotein size, and postprandial lipemia in men and postmenopausal women aged 45-70 y: the OPTILIP Study Am J Clin Nutr 84 1290 1298 1:CAS:528:DC%2BD28XhtlGrurvM 17158408
    • (2006) Am J Clin Nutr , vol.84 , pp. 1290-1298
    • Griffin, M.D.1    Sanders, T.A.2    Davies, I.G.3    Morgan, L.M.4    Millward, D.J.5    Lewis, F.6    Slaughter, S.7    Cooper, J.A.8    Miller, G.J.9    Griffin, B.A.10
  • 27
    • 37549036315 scopus 로고    scopus 로고
    • Fatty acid desaturases in human adipose tissue: Relationships between gene expression, desaturation indexes and insulin resistance
    • 10.1007/s00125-007-0876-9 18030445
    • P Sjögren J Sierra-Johnson K Gertow M Rosell B Vessby U de Faire A Hamsten ML Hellenius RM Fisher 2008 Fatty acid desaturases in human adipose tissue: relationships between gene expression, desaturation indexes and insulin resistance Diabetologia 51 328 335 10.1007/s00125-007-0876-9 18030445
    • (2008) Diabetologia , vol.51 , pp. 328-335
    • Sjögren, P.1    Sierra-Johnson, J.2    Gertow, K.3    Rosell, M.4    Vessby, B.5    De Faire, U.6    Hamsten, A.7    Hellenius, M.L.8    Fisher, R.M.9
  • 28
    • 10044240590 scopus 로고    scopus 로고
    • Effects of streptozotocin and dietary fructose on delta-6 desaturation in spontaneously hypertensive rat liver
    • DOI 10.1016/j.biochi.2004.10.002, PII S0300908404001786, Recent Advances in Lipid Metabolism and Related Disorders
    • C Comte S Bellenger J Bellenger C Tessier JP Poisson M Narce 2004 Effects of streptozotocin and dietary fructose on delta-6 desaturation in spontaneously hypertensive rat liver Biochimie 86 799 806 10.1016/j.biochi.2004.10.002 1:CAS:528:DC%2BD2cXhtVKksLbJ 15589689 (Pubitemid 39602759)
    • (2004) Biochimie , vol.86 , Issue.11 , pp. 799-806
    • Comte, C.1    Bellenger, S.2    Bellenger, J.3    Tessier, C.4    Poisson, J.P.5    Narce, M.6
  • 29
    • 0141446846 scopus 로고    scopus 로고
    • Desaturase Activities in Rat Model of Insulin Resistance Induced by a Sucrose-Rich Diet
    • DOI 10.1007/s11745-003-1121-x
    • RR Brenner OJ Rimoldi YB Lombardo MS González AM Bernasconi A Chicco JC Basabe 2003 Desaturase activities in rat model of insulin resistance induced by a sucrose-rich diet Lipids 38 733 742 10.1007/s11745-003-1121-x 1:CAS:528:DC%2BD3sXntFCjs7Y%3D 14506836 (Pubitemid 37362265)
    • (2003) Lipids , vol.38 , Issue.7 , pp. 733-742
    • Brenner, R.R.1    Rimoldi, O.J.2    Lombardo, Y.B.3    Gonzalez, M.S.4    Bernasconi, A.M.5    Chicco, A.6    Basabe, J.C.7
  • 30
    • 0036295678 scopus 로고    scopus 로고
    • Insulin resistance in the hereditary hypertriglyceridemic rat is associated with an impairment of delta-6 desaturase expression in liver
    • 1:CAS:528:DC%2BD38XlvVOjs7c%3D 12079873
    • D Gasperikova E Demcakova J Ukropec I Klimes E Sebokova 2002 Insulin resistance in the hereditary hypertriglyceridemic rat is associated with an impairment of delta-6 desaturase expression in liver Ann N Y Acad Sci 967 446 453 1:CAS:528:DC%2BD38XlvVOjs7c%3D 12079873
    • (2002) Ann N y Acad Sci , vol.967 , pp. 446-453
    • Gasperikova, D.1    Demcakova, E.2    Ukropec, J.3    Klimes, I.4    Sebokova, E.5
  • 31
    • 0036297756 scopus 로고    scopus 로고
    • Desaturation and elongation of fatty acids and insulin action
    • 1:CAS:528:DC%2BD38XlvVKqu7o%3D 12079847
    • B Vessby IB Gustafsson S Tengblad M Boberg A Andersson 2002 Desaturation and elongation of fatty acids and insulin action Ann N Y Acad Sci 967 183 195 1:CAS:528:DC%2BD38XlvVKqu7o%3D 12079847
    • (2002) Ann N y Acad Sci , vol.967 , pp. 183-195
    • Vessby, B.1    Gustafsson, I.B.2    Tengblad, S.3    Boberg, M.4    Andersson, A.5
  • 34
    • 1442300220 scopus 로고    scopus 로고
    • Oxidative stress and enzymatic antioxidant status in patients with nonalcoholic steatohepatitis
    • 1:CAS:528:DC%2BD2cXislyjurs%3D 15038668
    • M Koruk S Taysi MC Savas 2004 Oxidative stress and enzymatic antioxidant status in patients with nonalcoholic steatohepatitis Ann Clin Lab Sci 34 57 62 1:CAS:528:DC%2BD2cXislyjurs%3D 15038668
    • (2004) Ann Clin Lab Sci , vol.34 , pp. 57-62
    • Koruk, M.1    Taysi, S.2    Savas, M.C.3
  • 35
    • 17044370841 scopus 로고    scopus 로고
    • Glutathione metabolism and antioxidant enzymes in patients affected by nonalcoholic steatohepatitis
    • 10.1016/j.cccn.2004.12.022 1:CAS:528:DC%2BD2MXivFyqt7g%3D 15820484
    • V Nobili A Pastore LM Gaeta G Tozzi D Comparcola MR Sartorelli M Marcellini E Bertini F Piemonte 2005 Glutathione metabolism and antioxidant enzymes in patients affected by nonalcoholic steatohepatitis Clin Chim Acta 355 105 111 10.1016/j.cccn.2004.12.022 1:CAS:528:DC%2BD2MXivFyqt7g%3D 15820484
    • (2005) Clin Chim Acta , vol.355 , pp. 105-111
    • Nobili, V.1    Pastore, A.2    Gaeta, L.M.3    Tozzi, G.4    Comparcola, D.5    Sartorelli, M.R.6    Marcellini, M.7    Bertini, E.8    Piemonte, F.9


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