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Volumn 298, Issue 3, 2010, Pages

Hexosamine biosynthesis pathway flux promotes endoplasmic reticulum stress, lipid accumulation, and inflammatory gene expression in hepatic cells

Author keywords

Atherosclerosis; Diabetes mellitus; Fructose 6 phosphate amidotransferase; Glucosamine; Glutamine

Indexed keywords

6 DIAZO 5 OXONORLEUCINE; CALRETICULIN; CHOLESTEROL; GLUCOSAMINE; GLUCOSE REGULATED PROTEIN 78; GLUCOSE REGULATED PROTEIN 94; GLUTAMINE FRUCTOSE 6 PHOSPHATE AMINOTRANSFERASE; GROWTH ARREST AND DNA DAMAGE INDUCIBLE PROTEIN 153; HEXOSAMINE; MARKER;

EID: 77349122076     PISSN: 01931849     EISSN: 15221555     Source Type: Journal    
DOI: 10.1152/ajpendo.00507.2009     Document Type: Article
Times cited : (72)

References (54)
  • 2
    • 0242609973 scopus 로고    scopus 로고
    • Impact of endoplasmic reticulum stress pathway on pancreatic beta-cells and diabetes mellitus
    • Araki E, Oyadomari S, Mori M. Impact of endoplasmic reticulum stress pathway on pancreatic beta-cells and diabetes mellitus. Exp Biol Med (Maywood) 228: 1213-1217, 2003.
    • (2003) Exp Biol Med (Maywood) , vol.228 , pp. 1213-1217
    • Araki, E.1    Oyadomari, S.2    Mori, M.3
  • 3
    • 40649092372 scopus 로고    scopus 로고
    • Expression of K6W-ubiquitin in lens epithelial cells leads to upregulation of a broad spectrum of molecular chaperones
    • Bian Q, Fernandes AF, Taylor A, Wu M, Pereira P, Shang F. Expression of K6W-ubiquitin in lens epithelial cells leads to upregulation of a broad spectrum of molecular chaperones. Mol Vision 14: 403-412, 2008.
    • (2008) Mol Vision , vol.14 , pp. 403-412
    • Bian, Q.1    Fernandes, A.F.2    Taylor, A.3    Wu, M.4    Pereira, P.5    Shang, F.6
  • 4
    • 58249112749 scopus 로고    scopus 로고
    • Valproate attenuates accelerated atherosclerosis in hyperglycemic apoE-deficient mice: Evidence in support of a role for endoplasmic reticulum stress and glycogen synthase kinase-3 in lesion development and hepatic steatosis
    • Bowes AJ, Khan MI, Shi Y, Robertson L, Werstuck GH. Valproate attenuates accelerated atherosclerosis in hyperglycemic apoE-deficient mice: evidence in support of a role for endoplasmic reticulum stress and glycogen synthase kinase-3 in lesion development and hepatic steatosis. Am J Pathol 174: 330-342, 2009.
    • (2009) Am J Pathol , vol.174 , pp. 330-342
    • Bowes, A.J.1    Khan, M.I.2    Shi, Y.3    Robertson, L.4    Werstuck, G.H.5
  • 5
    • 33644873810 scopus 로고    scopus 로고
    • Hexosamines, insulin resistance, and the complications of diabetes: Current status
    • Buse MG. Hexosamines, insulin resistance, and the complications of diabetes: current status. Am J Physiol Endocrinol Metab 290: E1-E8, 2006.
    • (2006) Am J Physiol Endocrinol Metab , vol.290
    • Buse, M.G.1
  • 7
    • 0027324844 scopus 로고
    • Transcriptional induction of genes encoding endoplasmic reticulum resident proteins requires a transmembrane protein kinase
    • Cox JS, Shamu CE, Walter P. Transcriptional induction of genes encoding endoplasmic reticulum resident proteins requires a transmembrane protein kinase. Cell 73: 1197-1206, 1993.
    • (1993) Cell , vol.73 , pp. 1197-1206
    • Cox, J.S.1    Shamu, C.E.2    Walter, P.3
  • 8
    • 0035516185 scopus 로고    scopus 로고
    • A novel variant of glutamine:fructose-6-phosphate amidotransferase-1 (GFAT1) mRNA is selectively expressed in striated muscle
    • DeHaven JE, Robinson KA, Nelson BA, Buse MG. A novel variant of glutamine:fructose-6-phosphate amidotransferase-1 (GFAT1) mRNA is selectively expressed in striated muscle. Diabetes 50: 2419-2424, 2001.
    • (2001) Diabetes , vol.50 , pp. 2419-2424
    • DeHaven, J.E.1    Robinson, K.A.2    Nelson, B.A.3    Buse, M.G.4
  • 10
    • 1342304425 scopus 로고    scopus 로고
    • Adenovirus-mediated gene transfer of glutamine: Fructose-6-phosphate amidotransferase antagonizes the effects of interleukin-1beta on rat chondrocytes
    • Gouze JN, Gouze E, Palmer GD, Kaneto H, Ghivizzani SC, Grodzinsky AJ, Evans CH. Adenovirus-mediated gene transfer of glutamine: fructose-6-phosphate amidotransferase antagonizes the effects of interleukin-1beta on rat chondrocytes. Osteoarthritis Cartilage 12: 217-224, 2004.
    • (2004) Osteoarthritis Cartilage , vol.12 , pp. 217-224
    • Gouze, J.N.1    Gouze, E.2    Palmer, G.D.3    Kaneto, H.4    Ghivizzani, S.C.5    Grodzinsky, A.J.6    Evans, C.H.7
  • 11
    • 0347480402 scopus 로고    scopus 로고
    • Hyperglycemia as a cardiovascular risk factor
    • Haffner SJ, Cassells H. Hyperglycemia as a cardiovascular risk factor. Am J Med 115, Suppl 8A: 6S-11S, 2003.
    • (2003) Am J Med , vol.115 , Issue.SUPPL. 8A
    • Haffner, S.J.1    Cassells, H.2
  • 13
    • 0033590451 scopus 로고    scopus 로고
    • Protein translation and folding are coupled by an endoplasmic-reticulum-resident kinase
    • Harding HP, Zhang Y, Ron D. Protein translation and folding are coupled by an endoplasmic-reticulum-resident kinase. Nature 397: 271-274, 1999.
    • (1999) Nature , vol.397 , pp. 271-274
    • Harding, H.P.1    Zhang, Y.2    Ron, D.3
  • 15
    • 0028198111 scopus 로고
    • How N-linked oligosaccharides affect glycoprotein folding in the endoplasmic reticulum
    • Helenius A. How N-linked oligosaccharides affect glycoprotein folding in the endoplasmic reticulum. Mol Biol Cell 5: 253-265, 1994.
    • (1994) Mol Biol Cell , vol.5 , pp. 253-265
    • Helenius, A.1
  • 17
    • 33846803744 scopus 로고    scopus 로고
    • Characterization of glutamine: Fructose-6-phosphate aminotransferase from the ixodid tick, Haemaphysalis longicornis, and its critical role in host blood feeding
    • Huang X, Tsuji N, Miyoshi T, Motobu M, Islam MK, Alim MA, Fujisaki K. Characterization of glutamine: fructose-6-phosphate aminotransferase from the ixodid tick, Haemaphysalis longicornis, and its critical role in host blood feeding. Int J Parasitol 37: 383-392, 2007.
    • (2007) Int J Parasitol , vol.37 , pp. 383-392
    • Huang, X.1    Tsuji, N.2    Miyoshi, T.3    Motobu, M.4    Islam, M.K.5    Alim, M.A.6    Fujisaki, K.7
  • 20
    • 33244493738 scopus 로고    scopus 로고
    • Saturated fat-induced changes in Sf 60-400 particle composition reduces uptake of LDL by HepG2 cells
    • Jackson KG, Maitin V, Leake DS, Yaqoob P, Williams CM. Saturated fat-induced changes in Sf 60-400 particle composition reduces uptake of LDL by HepG2 cells. J Lipid Res 47: 393-403, 2006.
    • (2006) J Lipid Res , vol.47 , pp. 393-403
    • Jackson, K.G.1    Maitin, V.2    Leake, D.S.3    Yaqoob, P.4    Williams, C.M.5
  • 22
    • 0036231781 scopus 로고    scopus 로고
    • Flux through the hexosamine pathway is a determinant of nuclear factor kappaB- dependent promoter activation
    • James LR, Tang D, Ingram A, Ly H, Thai K, Cai L, Scholey JW. Flux through the hexosamine pathway is a determinant of nuclear factor kappaB- dependent promoter activation. Diabetes 51: 1146-1156, 2002.
    • (2002) Diabetes , vol.51 , pp. 1146-1156
    • James, L.R.1    Tang, D.2    Ingram, A.3    Ly, H.4    Thai, K.5    Cai, L.6    Scholey, J.W.7
  • 23
    • 66449137379 scopus 로고    scopus 로고
    • GRP78 expression inhibits insulin and ER stress-induced SREBP-1c activation and reduces hepatic steatosis in mice
    • Kammoun HL, Chabanon H, Hainault I, Luquet S, Magnan C, Koike T, Ferre P, Foufelle F. GRP78 expression inhibits insulin and ER stress-induced SREBP-1c activation and reduces hepatic steatosis in mice. J Clin Invest 119: 1201-1215, 2009.
    • (2009) J Clin Invest , vol.119 , pp. 1201-1215
    • Kammoun, H.L.1    Chabanon, H.2    Hainault, I.3    Luquet, S.4    Magnan, C.5    Koike, T.6    Ferre, P.7    Foufelle, F.8
  • 24
    • 0033562966 scopus 로고    scopus 로고
    • Stress signaling from the lumen of the endoplasmic reticulum: Coordination of gene transcriptional and translational controls
    • Kaufman RJ. Stress signaling from the lumen of the endoplasmic reticulum: coordination of gene transcriptional and translational controls. Genes Devel 13: 1211-1233, 1999.
    • (1999) Genes Devel , vol.13 , pp. 1211-1233
    • Kaufman, R.J.1
  • 25
    • 14044261099 scopus 로고    scopus 로고
    • Valproate protects cells from ER stress-induced lipid accumulation and apoptosis by inhibiting glycogen synthase kinase-3
    • Kim AJ, Shi Y, Austin RC, Werstuck GH. Valproate protects cells from ER stress-induced lipid accumulation and apoptosis by inhibiting glycogen synthase kinase-3. J Cell Sci 118: 89-99, 2005.
    • (2005) J Cell Sci , vol.118 , pp. 89-99
    • Kim, A.J.1    Shi, Y.2    Austin, R.C.3    Werstuck, G.H.4
  • 27
    • 7244221504 scopus 로고    scopus 로고
    • Proteolytic activation of sterol regulatory element-binding protein induced by cellular stress through depletion of Insig-1
    • Lee JN, Ye J. Proteolytic activation of sterol regulatory element-binding protein induced by cellular stress through depletion of Insig-1. J Biol Chem 279: 45257-45265, 2004.
    • (2004) J Biol Chem , vol.279 , pp. 45257-45265
    • Lee, J.N.1    Ye, J.2
  • 28
    • 34748861521 scopus 로고    scopus 로고
    • An enzyme-coupled assay for amidotransferase activity of glucosamine-6-phosphate synthase
    • Li Y, Lopez P, Durand P, Ouazzani J, Badet B, Badet-Denisot MA. An enzyme-coupled assay for amidotransferase activity of glucosamine-6-phosphate synthase. Anal Biochem 370: 142-146, 2007.
    • (2007) Anal Biochem , vol.370 , pp. 142-146
    • Li, Y.1    Lopez, P.2    Durand, P.3    Ouazzani, J.4    Badet, B.5    Badet-Denisot, M.A.6
  • 29
    • 45449087963 scopus 로고    scopus 로고
    • Apoptosis induced by endoplasmic reticulum stress involved in diabetic kidney disease
    • Liu G, Sun Y, Li Z, Song T, Wang H, Zhang Y, Ge Z. Apoptosis induced by endoplasmic reticulum stress involved in diabetic kidney disease. Biochem Biophys Res Commun 370: 651-656, 2008.
    • (2008) Biochem Biophys Res Commun , vol.370 , pp. 651-656
    • Liu, G.1    Sun, Y.2    Li, Z.3    Song, T.4    Wang, H.5    Zhang, Y.6    Ge, Z.7
  • 30
    • 46449131992 scopus 로고    scopus 로고
    • Is liver fat detrimental to vessels? Intersections in the pathogenesis of NAFLD and atherosclerosis
    • Loria P, Lonardo A, Targher G. Is liver fat detrimental to vessels? Intersections in the pathogenesis of NAFLD and atherosclerosis. Clin Sci (Lond) 115: 1-12, 2008.
    • (2008) Clin Sci (Lond) , vol.115 , pp. 1-12
    • Loria, P.1    Lonardo, A.2    Targher, G.3
  • 31
    • 0037013983 scopus 로고    scopus 로고
    • Glucosamine-6-phosphate synthase-the multi-facets enzyme
    • Milewski S. Glucosamine-6-phosphate synthase-the multi-facets enzyme. Biochim Biophys Acta 1597: 173-192, 2002.
    • (2002) Biochim Biophys Acta , vol.1597 , pp. 173-192
    • Milewski, S.1
  • 33
    • 0036175128 scopus 로고    scopus 로고
    • Targeted disruption of the Chop gene delays endoplasmic reticulum stress-mediated diabetes
    • Oyadomari S, Koizumi A, Takeda K, Gotoh T, Akira S, Araki E, Mori M. Targeted disruption of the Chop gene delays endoplasmic reticulum stress-mediated diabetes. J Clin Invest 109: 525-532, 2002.
    • (2002) J Clin Invest , vol.109 , pp. 525-532
    • Oyadomari, S.1    Koizumi, A.2    Takeda, K.3    Gotoh, T.4    Akira, S.5    Araki, E.6    Mori, M.7
  • 36
    • 0032779694 scopus 로고    scopus 로고
    • Signal transduction from the endoplasmic reticulum to the cell nucleus
    • Pahl HL. Signal transduction from the endoplasmic reticulum to the cell nucleus. Physiol Rev 79: 683-701, 1999.
    • (1999) Physiol Rev , vol.79 , pp. 683-701
    • Pahl, H.L.1
  • 37
    • 33747144535 scopus 로고    scopus 로고
    • Mechanisms of glucosamine-induced suppression of the hepatic assembly and secretion of apolipoprotein B-100-containing lipoproteins
    • Qiu W, Avramoglu RK, Rutledge AC, Tsai J, Adeli K. Mechanisms of glucosamine-induced suppression of the hepatic assembly and secretion of apolipoprotein B-100-containing lipoproteins. J Lipid Res 47: 1749-1761, 2006.
    • (2006) J Lipid Res , vol.47 , pp. 1749-1761
    • Qiu, W.1    Avramoglu, R.K.2    Rutledge, A.C.3    Tsai, J.4    Adeli, K.5
  • 38
    • 14644405001 scopus 로고    scopus 로고
    • Glucosamine-induced endoplasmic reticulum stress promotes ApoB100 degradation: Evidence for Grp78-mediated targeting to proteasomal degradation
    • Qiu W, Kohen-Avramoglu R, Mhapsekar S, Tsai J, Austin RC, Adeli K. Glucosamine-induced endoplasmic reticulum stress promotes ApoB100 degradation: evidence for Grp78-mediated targeting to proteasomal degradation. Arterioscler Thromb Vasc Biol 25: 571-577, 2005.
    • (2005) Arterioscler Thromb Vasc Biol , vol.25 , pp. 571-577
    • Qiu, W.1    Kohen-Avramoglu, R.2    Mhapsekar, S.3    Tsai, J.4    Austin, R.C.5    Adeli, K.6
  • 39
    • 34247116517 scopus 로고    scopus 로고
    • Glycosylation mediates up-regulation of a potent antiangiogenic and proatherogenic protein, thrombospondin-1, by glucose in vascular smooth muscle cells
    • Raman P, Krukovets I, Marinic TE, Bornstein P, Stenina OI. Glycosylation mediates up-regulation of a potent antiangiogenic and proatherogenic protein, thrombospondin-1, by glucose in vascular smooth muscle cells. J Biol Chem 282: 5704-5714, 2007.
    • (2007) J Biol Chem , vol.282 , pp. 5704-5714
    • Raman, P.1    Krukovets, I.2    Marinic, T.E.3    Bornstein, P.4    Stenina, O.I.5
  • 40
    • 34250899722 scopus 로고    scopus 로고
    • Signal integration in the endoplasmic reticulum unfolded protein response
    • Ron D, Walter P. Signal integration in the endoplasmic reticulum unfolded protein response. Nat Rev 8: 519-529, 2007.
    • (2007) Nat Rev , vol.8 , pp. 519-529
    • Ron, D.1    Walter, P.2
  • 41
    • 0041707658 scopus 로고    scopus 로고
    • Role of hexosamine biosynthesis in glucose-mediated up-regulation of lipogenic enzyme mRNA levels: Effects of glucose, glutamine, and glucosamine on glycerophosphate dehydrogenase, fatty acid synthase, and acetyl-CoA carboxylase mRNA levels
    • Rumberger JM, Wu T, Hering MA, Marshall S. Role of hexosamine biosynthesis in glucose-mediated up-regulation of lipogenic enzyme mRNA levels: effects of glucose, glutamine, and glucosamine on glycerophosphate dehydrogenase, fatty acid synthase, and acetyl-CoA carboxylase mRNA levels. J Biol Chem 278: 28547-28552, 2003.
    • (2003) J Biol Chem , vol.278 , pp. 28547-28552
    • Rumberger, J.M.1    Wu, T.2    Hering, M.A.3    Marshall, S.4
  • 42
    • 10444226462 scopus 로고    scopus 로고
    • ER stress and the unfolded protein response
    • Schroder M, Kaufman RJ. ER stress and the unfolded protein response. Mutat Res 569: 29-63, 2005.
    • (2005) Mutat Res , vol.569 , pp. 29-63
    • Schroder, M.1    Kaufman, R.J.2
  • 43
    • 33847339711 scopus 로고    scopus 로고
    • Translation attenuation by PERK balances ER glycoprotein synthesis with lipid-linked oligosaccharide flux
    • Shang J, Gao N, Kaufman RJ, Ron D, Harding HP, Lehrman MA. Translation attenuation by PERK balances ER glycoprotein synthesis with lipid-linked oligosaccharide flux. J Cell Biol 176: 605-616, 2007.
    • (2007) J Cell Biol , vol.176 , pp. 605-616
    • Shang, J.1    Gao, N.2    Kaufman, R.J.3    Ron, D.4    Harding, H.P.5    Lehrman, M.A.6
  • 44
    • 1942475176 scopus 로고    scopus 로고
    • The role of endoplasmic reticulum stress in nonimmune diabetes: NOD. k iHEL, a novel model of beta cell death
    • Socha L, Silva D, Lesage S, Goodnow C, Petrovsky N. The role of endoplasmic reticulum stress in nonimmune diabetes: NOD. k iHEL, a novel model of beta cell death. Ann NY Acad Sci 1005: 178-183, 2003.
    • (2003) Ann NY Acad Sci , vol.1005 , pp. 178-183
    • Socha, L.1    Silva, D.2    Lesage, S.3    Goodnow, C.4    Petrovsky, N.5
  • 45
    • 34548118605 scopus 로고    scopus 로고
    • Glutamine fructose-6-phosphate amidotransferase (GFAT) gene expression and activity in patients with type 2 diabetes: Inter-relationships with hyperglycaemia and oxidative stress
    • Srinivasan V, Sandhya N, Sampathkumar R, Farooq S, Mohan V, Balasubramanyam M. Glutamine fructose-6-phosphate amidotransferase (GFAT) gene expression and activity in patients with type 2 diabetes: inter-relationships with hyperglycaemia and oxidative stress. Clin Biochem 40: 952-957, 2007.
    • (2007) Clin Biochem , vol.40 , pp. 952-957
    • Srinivasan, V.1    Sandhya, N.2    Sampathkumar, R.3    Farooq, S.4    Mohan, V.5    Balasubramanyam, M.6
  • 46
    • 33746597352 scopus 로고    scopus 로고
    • Influence of hepatic steatosis (fatty liver) on severity and composition of dyslipidemia in type 2 diabetes
    • Toledo FG, Sniderman AD, Kelley DE. Influence of hepatic steatosis (fatty liver) on severity and composition of dyslipidemia in type 2 diabetes. Diabetes Care 29: 1845-1850, 2006.
    • (2006) Diabetes Care , vol.29 , pp. 1845-1850
    • Toledo, F.G.1    Sniderman, A.D.2    Kelley, D.E.3
  • 47
    • 0032918044 scopus 로고    scopus 로고
    • A mutation in the insulin 2 gene induces diabetes with severe pancreatic beta-cell dysfunction in the Mody mouse
    • Wang J, Takeuchi T, Tanaka S, Kubo SK, Kayo T, Lu D, Takata K, Koizumi A, Izumi T. A mutation in the insulin 2 gene induces diabetes with severe pancreatic beta-cell dysfunction in the Mody mouse. J Clin Invest 103: 27-37, 1999.
    • (1999) J Clin Invest , vol.103 , pp. 27-37
    • Wang, J.1    Takeuchi, T.2    Tanaka, S.3    Kubo, S.K.4    Kayo, T.5    Lu, D.6    Takata, K.7    Koizumi, A.8    Izumi, T.9
  • 48
    • 0035846849 scopus 로고    scopus 로고
    • Overexpression of glutamine:fructose-6-phosphate-amidotransferase induces transforming growth factor-beta1 synthesis in NIH-3T3 fibroblasts
    • Weigert C, Brodbeck K, Lehmann R, Haring HU, Schleicher ED. Overexpression of glutamine:fructose-6-phosphate-amidotransferase induces transforming growth factor-beta1 synthesis in NIH-3T3 fibroblasts. FEBS Lett 488: 95-99, 2001.
    • (2001) FEBS Lett , vol.488 , pp. 95-99
    • Weigert, C.1    Brodbeck, K.2    Lehmann, R.3    Haring, H.U.4    Schleicher, E.D.5
  • 49
    • 33644767028 scopus 로고    scopus 로고
    • Glucosamine-induced endoplasmic reticulum dysfunction is associated with accelerated atherosclerosis in a hyperglycemic mouse model
    • Werstuck GH, Khan MI, Femia G, Kim AJ, Tedesco V, Trigatti B, Shi Y. Glucosamine-induced endoplasmic reticulum dysfunction is associated with accelerated atherosclerosis in a hyperglycemic mouse model. Diabetes 55: 93-101, 2006.
    • (2006) Diabetes , vol.55 , pp. 93-101
    • Werstuck, G.H.1    Khan, M.I.2    Femia, G.3    Kim, A.J.4    Tedesco, V.5    Trigatti, B.6    Shi, Y.7
  • 50
    • 5144226319 scopus 로고    scopus 로고
    • Examining the correlations between GSK-3 inhibitory properties and anti-convulsant efficacy of valproate and valproate-related compounds
    • Werstuck GH, Kim AJ, Brenstrum T, Ohnmacht SA, Panna E, Capretta A. Examining the correlations between GSK-3 inhibitory properties and anti-convulsant efficacy of valproate and valproate-related compounds. Bioorg Med Chem Lett 14: 5465-5467, 2004.
    • (2004) Bioorg Med Chem Lett , vol.14 , pp. 5465-5467
    • Werstuck, G.H.1    Kim, A.J.2    Brenstrum, T.3    Ohnmacht, S.A.4    Panna, E.5    Capretta, A.6
  • 52
    • 17144419252 scopus 로고    scopus 로고
    • Activation of the unfolded protein response occurs at all stages of atherosclerotic lesion development in apolipoprotein E-deficient mice
    • Zhou J, Lhotak S, Hilditch BA, Austin RC. Activation of the unfolded protein response occurs at all stages of atherosclerotic lesion development in apolipoprotein E-deficient mice. Circulation 111: 1814-1821, 2005.
    • (2005) Circulation , vol.111 , pp. 1814-1821
    • Zhou, J.1    Lhotak, S.2    Hilditch, B.A.3    Austin, R.C.4
  • 53
    • 38349104578 scopus 로고    scopus 로고
    • Calreticulin expression in the clonal plasma cells of patients with systemic light-chain (AL-) amyloidosis is associated with response to high-dose melphalan
    • Zhou P, Teruya-Feldstein J, Lu P, Fleisher M, Olshen A, Comenzo RL. Calreticulin expression in the clonal plasma cells of patients with systemic light-chain (AL-) amyloidosis is associated with response to high-dose melphalan. Blood 111: 549-557, 2008.
    • (2008) Blood , vol.111 , pp. 549-557
    • Zhou, P.1    Teruya-Feldstein, J.2    Lu, P.3    Fleisher, M.4    Olshen, A.5    Comenzo, R.L.6


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