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Volumn 68, Issue 8, 2013, Pages 877-891

Aging-induced dysregulation of Dicer1-dependent microRNA expression impairs angiogenic capacity of rat cerebromicrovascular endothelial cells

Author keywords

Angiogenesis; Capillary density; Cardiovascular aging; Cerebrovascular; Epigenetics; Vascular aging

Indexed keywords

DEAD BOX PROTEIN; DICER1 PROTEIN, RAT; MICRORNA; REACTIVE OXYGEN METABOLITE; RIBONUCLEASE III;

EID: 84880569509     PISSN: 10795006     EISSN: 1758535X     Source Type: Journal    
DOI: 10.1093/gerona/gls242     Document Type: Article
Times cited : (120)

References (111)
  • 1
    • 80052400687 scopus 로고    scopus 로고
    • Vascular contributions to cognitive impairment and dementia: A statement for healthcare professionals from the American heart association/American stroke association
    • Gorelick PB, Scuteri A, Black SE, et al. Vascular contributions to cognitive impairment and dementia: a statement for healthcare professionals from the American Heart Association/American Stroke Association. Stroke. 2011;42:2672-2713.
    • (2011) Stroke , vol.42 , pp. 2672-2713
    • Gorelick, P.B.1    Scuteri, A.2    Black, S.E.3
  • 2
    • 81555200043 scopus 로고    scopus 로고
    • Neurovascular pathways to neurodegeneration in alzheimer's disease and other disorders
    • Zlokovic BV. Neurovascular pathways to neurodegeneration in Alzheimer's disease and other disorders. nat Rev neurosci. 2011;12: 723-738.
    • (2011) Nat Rev Neurosci. , vol.12 , pp. 723-738
    • Zlokovic, B.V.1
  • 3
    • 70350707602 scopus 로고    scopus 로고
    • Basal and hypercapnia-altered cerebrovascular perfusion predict mild cognitive impairment in aging rodents
    • Mitschelen M, Garteiser P, Carnes BA, et al. Basal and hypercapnia-altered cerebrovascular perfusion predict mild cognitive impairment in aging rodents. neuroscience. 2009;164:918-928.
    • (2009) Neuroscience , vol.164 , pp. 918-928
    • Mitschelen, M.1    Garteiser, P.2    Carnes, B.A.3
  • 4
    • 0141723587 scopus 로고    scopus 로고
    • Microvascular plasticity in aging
    • DOI 10.1016/S1568-1637(02)00064-8, PII S1568163702000648
    • Riddle DR, Sonntag WE, Lichtenwalner RJ. Microvascular plasticity in aging. ageing Res Rev. 2003;2:149-168. (Pubitemid 37443910)
    • (2003) Ageing Research Reviews , vol.2 , Issue.2 , pp. 149-168
    • Riddle, D.R.1    Sonntag, W.E.2    Lichtenwalner, R.J.3
  • 6
    • 0032831782 scopus 로고    scopus 로고
    • Effects of moderate caloric restriction on cortical microvascular density and local cerebral blood flow in aged rats
    • DOI 10.1016/S0197-4580(99)00032-9, PII S0197458099000329
    • Lynch CD, Cooney PT, Bennett SA, et al. Effects of moderate caloric restriction on cortical microvascular density and local cerebral blood flow in aged rats. neurobiol aging. 1999;20:191-200. (Pubitemid 29488729)
    • (1999) Neurobiology of Aging , vol.20 , Issue.2 , pp. 191-200
    • Lynch, C.D.1    Cooney, P.T.2    Bennett, S.A.3    Thornton, P.L.4    Khan, A.S.5    Ingram, R.L.6    Sonntag, W.E.7
  • 7
    • 0030795556 scopus 로고    scopus 로고
    • Decreases in cerebral microvasculature with age are associated with the decline in growth hormone and insulin-like growth factor 1
    • DOI 10.1210/en.138.8.3515
    • Sonntag WE, Lynch CD, Cooney PT, Hutchins PM. Decreases in cerebral microvasculature with age are associated with the decline in growth hormone and insulin-like growth factor 1. endocrinology. 1997;138:3515-3520. (Pubitemid 27345707)
    • (1997) Endocrinology , vol.138 , Issue.8 , pp. 3515-3520
    • Sonntag, W.E.1    Lynch, C.D.2    Cooney, P.T.3    Hutchins, P.M.4
  • 10
    • 0035047718 scopus 로고    scopus 로고
    • Cerebral microvascular pathology in aging and Alzheimer's disease
    • DOI 10.1016/S0301-0082(00)00068-X, PII S030100820000068X
    • Farkas E, Luiten PG. Cerebral microvascular pathology in aging and Alzheimer's disease. Prog neurobiol. 2001;64:575-611. (Pubitemid 32304447)
    • (2001) Progress in Neurobiology , vol.64 , Issue.6 , pp. 575-611
    • Farkas, E.1    Luiten, P.G.M.2
  • 12
    • 0032958718 scopus 로고    scopus 로고
    • Transcranial color Doppler sonography of basal cerebral arteries in 182 healthy subjects: Age and sex variability and normal reference values for blood flow parameters
    • Krejza J, Mariak Z, Walecki J, Szydlik P, Lewko J, Ustymowicz A. Transcranial color Doppler sonography of basal cerebral arteries in 182 healthy subjects: age and sex variability and normal reference values for blood flow parameters. aJR Am J Roentgenol. 1999;172: 213-218. (Pubitemid 29028460)
    • (1999) American Journal of Roentgenology , vol.172 , Issue.1 , pp. 213-218
    • Krejza, J.1    Mariak, Z.2    Walecki, J.3    Szydlik, P.4    Lewko, J.5    Ustymowicz, A.6
  • 14
    • 0034544570 scopus 로고    scopus 로고
    • Comparison of regional cerebral blood flow and glucose metabolism in the normal brain: Effect of aging
    • Bentourkia M, Bol A, Ivanoiu A, et al. Comparison of regional cerebral blood flow and glucose metabolism in the normal brain: effect of aging. J neurol Sci. 2000;181:19-28.
    • (2000) J Neurol Sci. , vol.181 , pp. 19-28
    • Bentourkia, M.1    Bol, A.2    Ivanoiu, A.3
  • 15
    • 0024670484 scopus 로고
    • Regional cerebral blood flow characteristics and variations with age in resting normal subjects
    • Hagstadius S, Risberg J. Regional cerebral blood flow characteristics and variations with age in resting normal subjects. Brain cogn. 1989;10:28-43.
    • (1989) Brain Cogn. , vol.10 , pp. 28-43
    • Hagstadius, S.1    Risberg, J.2
  • 17
    • 0036216215 scopus 로고    scopus 로고
    • Growth hormone, insulin-like growth factor-1 and the aging cardiovascular system
    • Khan AS, Sane DC, Wannenburg T, Sonntag WE. Growth hormone, insulin-like growth factor-1 and the aging cardiovascular system. cardiovasc Res. 2002;54:25-35.
    • (2002) Cardiovasc Res. , vol.54 , pp. 25-35
    • Khan, A.S.1    Sane, D.C.2    Wannenburg, T.3    Sonntag, W.E.4
  • 18
    • 78651084322 scopus 로고    scopus 로고
    • Review: Cerebral microvascular pathology in ageing and neurodegeneration
    • Brown WR, Thore CR. Review: cerebral microvascular pathology in ageing and neurodegeneration. neuropathol appl neurobiol. 2011;37:56-74.
    • (2011) Neuropathol Appl Neurobiol. , vol.37 , pp. 56-74
    • Brown, W.R.1    Thore, C.R.2
  • 20
    • 13944274915 scopus 로고    scopus 로고
    • Defects in activation of nitric oxide synthases occur during delayed angiogenesis in aging
    • DOI 10.1016/j.mad.2004.10.005
    • Bach MH, Sadoun E, Reed MJ. Defects in activation of nitric oxide synthases occur during delayed angiogenesis in aging. Mech ageing Dev. 2005;126:467-473. (Pubitemid 40269290)
    • (2005) Mechanisms of Ageing and Development , vol.126 , Issue.4 , pp. 467-473
    • Bach, M.H.M.1    Sadoun, E.2    Reed, M.J.3
  • 21
    • 0042320670 scopus 로고    scopus 로고
    • Impaired angiogenesis in aging is associated with alterations in vessel density, matrix composition, inflammatory response, and growth factor expression
    • Sadoun E, Reed MJ. Impaired angiogenesis in aging is associated with alterations in vessel density, matrix composition, inflammatory response, and growth factor expression. J Histochem cytochem. 2003;51: 1119-1130. (Pubitemid 37059523)
    • (2003) Journal of Histochemistry and Cytochemistry , vol.51 , Issue.9 , pp. 1119-1130
    • Sadoun, E.1    Reed, M.J.2
  • 23
    • 84855752881 scopus 로고    scopus 로고
    • Activation of the metabolic sensor-AMP activated protein kinase reverses impairment of angiogenesis in aging myocardial microvascular endothelial cells. Implications for the aging heart
    • Ahluwalia A, Tarnawski AS. Activation of the metabolic sensor-AMP activated protein kinase reverses impairment of angiogenesis in aging myocardial microvascular endothelial cells. Implications for the aging heart. J Physiol Pharmacol. 2011;62:583-587.
    • (2011) J Physiol Pharmacol. , vol.62 , pp. 583-587
    • Ahluwalia, A.1    Tarnawski, A.S.2
  • 24
    • 84861087862 scopus 로고    scopus 로고
    • The emerging role of IGF-1 deficiency in cardiovascular aging: Recent advances
    • Ungvari Z, Csiszar A. The emerging role of IGF-1 deficiency in cardiovascular aging: recent advances. J Gerontol a Biol Sci Med Sci. 2012;67: 599-610.
    • (2012) J Gerontol a Biol Sci Med Sci. , vol.67 , pp. 599-610
    • Ungvari, Z.1    Csiszar, A.2
  • 25
    • 84858342300 scopus 로고    scopus 로고
    • Brain regional angiogenic potential at the neurovascular unit during normal aging
    • Murugesan N, Demarest TG, Madri JA, Pachter JS. Brain regional angiogenic potential at the neurovascular unit during normal aging. neurobiol aging. 2012;33:1004.e1-1004.16.
    • (2012) Neurobiol Aging , vol.33
    • Murugesan, N.1    Demarest, T.G.2    Madri, J.A.3    Pachter, J.S.4
  • 26
    • 79955483643 scopus 로고    scopus 로고
    • Hypoxia-induced angiogenesis is delayed in aging mouse brain
    • Benderro GF, Lamanna JC. Hypoxia-induced angiogenesis is delayed in aging mouse brain. Brain Res. 2011;1389:50-60.
    • (2011) Brain Res. , vol.1389 , pp. 50-60
    • Benderro, G.F.1    Lamanna, J.C.2
  • 28
    • 67649998366 scopus 로고    scopus 로고
    • MicroRNA-92a controls angiogenesis and functional recovery of ischemic tissues in mice
    • Bonauer A, Carmona G, Iwasaki M, et al. MicroRNA-92a controls angiogenesis and functional recovery of ischemic tissues in mice. Science. 2009;324:1710-1713.
    • (2009) Science , vol.324 , pp. 1710-1713
    • Bonauer, A.1    Carmona, G.2    Iwasaki, M.3
  • 29
    • 77954697250 scopus 로고    scopus 로고
    • Members of the micro-RNA-17-92 cluster exhibit a cell-intrinsic antiangiogenic function in endothelial cells
    • Doebele C, Bonauer A, Fischer A, et al. Members of the micro-RNA-17-92 cluster exhibit a cell-intrinsic antiangiogenic function in endothelial cells. Blood. 2010;115:4944-4950.
    • (2010) Blood , vol.115 , pp. 4944-4950
    • Doebele, C.1    Bonauer, A.2    Fischer, A.3
  • 30
    • 34447632218 scopus 로고    scopus 로고
    • Role of Dicer and Drosha for endothelial microRNA expression and angiogenesis
    • DOI 10.1161/CIRCRESAHA.107.153916, PII 0000301220070706000008
    • Kuehbacher A, Urbich C, Zeiher AM, Dimmeler S. Role of Dicer and Drosha for endothelial microRNA expression and angiogenesis. Circ Res. 2007;101:59-68. (Pubitemid 47094624)
    • (2007) Circulation Research , vol.101 , Issue.1 , pp. 59-68
    • Kuehbacher, A.1    Urbich, C.2    Zeiher, A.M.3    Dimmeler, S.4
  • 31
    • 34247554263 scopus 로고    scopus 로고
    • Dicer dependent microRNAs regulate gene expression and functions in human endothelial cells
    • DOI 10.1161/01.RES.0000265065.26744.17
    • Suárez Y, Fernández-Hernando C, Pober JS, Sessa WC. Dicer dependent microRNAs regulate gene expression and functions in human endothelial cells. Circ Res. 2007;100:1164-1173. (Pubitemid 46684129)
    • (2007) Circulation Research , vol.100 , Issue.8 , pp. 1164-1173
    • Suarez, Y.1    Fernandez-Hernando, C.2    Pober, J.S.3    Sessa, W.C.4
  • 32
    • 52949090784 scopus 로고    scopus 로고
    • Dicer-dependent endothelial microRNAs are necessary for postnatal angiogenesis
    • Suárez Y, Fernández-Hernando C, Yu J, et al. Dicer-dependent endothelial microRNAs are necessary for postnatal angiogenesis. Proc natl acad Sci USa. 2008;105:14082-14087.
    • (2008) Proc Natl Acad Sci USa. , vol.105 , pp. 14082-14087
    • Suárez, Y.1    Fernández-Hernando, C.2    Yu, J.3
  • 34
    • 29344467120 scopus 로고    scopus 로고
    • Physiology: A developmental timing microRNA and its target regulate life span in C. elegans
    • DOI 10.1126/science.1115596
    • Boehm M, Slack F. A developmental timing microRNA and its target regulate life span in C. elegans. Science. 2005;310:1954-1957. (Pubitemid 43005988)
    • (2005) Science , vol.310 , Issue.5756 , pp. 1954-1957
    • Boehm, M.1    Slack, F.2
  • 35
    • 77649338690 scopus 로고    scopus 로고
    • Novel modulators of senescence, aging, and longevity: Small non-coding RNAs enter the stage
    • Grillari J, Grillari-Voglauer R. Novel modulators of senescence, aging, and longevity: small non-coding RNAs enter the stage. exp Gerontol. 2010;45:302-311.
    • (2010) Exp Gerontol. , vol.45 , pp. 302-311
    • Grillari, J.1    Grillari-Voglauer, R.2
  • 36
    • 33744485559 scopus 로고    scopus 로고
    • Modulated microRNA expression during adult lifespan in Caenorhabditis elegans
    • DOI 10.1111/j.1474-9726.2006.00210.x
    • Ibáñez-Ventoso C, Yang M, Guo S, Robins H, Padgett RW, Driscoll M. Modulated microRNA expression during adult lifespan in Caenorhabditis elegans. aging cell. 2006;5:235-246. (Pubitemid 43805613)
    • (2006) Aging Cell , vol.5 , Issue.3 , pp. 235-246
    • Ibanez-Ventoso, C.1    Yang, M.2    Guo, S.3    Robins, H.4    Padgett, R.W.5    Driscoll, M.6
  • 37
    • 76249107865 scopus 로고    scopus 로고
    • MicroRNA regulation in ames dwarf mouse liver may contribute to delayed aging
    • Bates DJ, Li N, Liang R, et al. MicroRNA regulation in Ames dwarf mouse liver may contribute to delayed aging. aging cell. 2010;9:1-18.
    • (2010) Aging Cell , vol.9 , pp. 1-18
    • Bates, D.J.1    Li, N.2    Liang, R.3
  • 38
    • 46649098396 scopus 로고    scopus 로고
    • Murine microRNAs implicated in liver functions and aging process
    • Maes OC, An J, Sarojini H, Wang E. Murine microRNAs implicated in liver functions and aging process. Mech ageing Dev. 2008;129:534-541.
    • (2008) Mech Ageing Dev. , vol.129 , pp. 534-541
    • Maes, O.C.1    An, J.2    Sarojini, H.3    Wang, E.4
  • 39
    • 80051484050 scopus 로고    scopus 로고
    • Age-associated vascular oxidative stress, nrf2 dysfunction, and NF-{kappa}B activation in the nonhuman primate macaca mulatta
    • Ungvari Z, Bailey-Downs L, Gautam T, et al. Age-associated vascular oxidative stress, Nrf2 dysfunction, and NF-{kappa}B activation in the nonhuman primate Macaca mulatta. J Gerontol a Biol Sci Med Sci. 2011;66:866-875.
    • (2011) J Gerontol a Biol Sci Med Sci. , vol.66 , pp. 866-875
    • Ungvari, Z.1    Bailey-Downs, L.2    Gautam, T.3
  • 40
    • 84866426621 scopus 로고    scopus 로고
    • Testing the oxidative stress hypothesis of aging in primate fibroblasts: Is there a correlation between species longevity and cellular ROS production?
    • Csiszar A, Podlutsky A, Podlutskaya N, et al. Testing the oxidative stress hypothesis of aging in primate fibroblasts: Is there a correlation between species longevity and cellular ROS production? J Gerontol a Biol Sci Med Sci. 2012;67:841-852.
    • (2012) J Gerontol a Biol Sci Med Sci. , vol.67 , pp. 841-852
    • Csiszar, A.1    Podlutsky, A.2    Podlutskaya, N.3
  • 41
    • 79958292245 scopus 로고    scopus 로고
    • Free radical production, antioxidant capacity, and oxidative stress response signatures in fibroblasts from lewis dwarf rats: Effects of life span-extending peripubertal GH treatment
    • Ungvari Z, Sosnowska D, Podlutsky A, Koncz P, Sonntag WE, Csiszar A. Free radical production, antioxidant capacity, and oxidative stress response signatures in fibroblasts from Lewis dwarf rats: effects of life span-extending peripubertal GH treatment. J Gerontol a Biol Sci Med Sci. 2011;66:501-510.
    • (2011) J Gerontol a Biol Sci Med Sci. , vol.66 , pp. 501-510
    • Ungvari, Z.1    Sosnowska, D.2    Podlutsky, A.3    Koncz, P.4    Sonntag, W.E.5    Csiszar, A.6
  • 43
    • 67650659852 scopus 로고    scopus 로고
    • Anti-oxidative and anti-inflammatory vasoprotective effects of caloric restriction in aging: Role of circulating factors and SIRT1
    • Csiszar A, Labinskyy N, Jimenez R, et al. Anti-oxidative and anti-inflammatory vasoprotective effects of caloric restriction in aging: role of circulating factors and SIRT1. Mech ageing Dev. 2009;130:518-527.
    • (2009) Mech Ageing Dev. , vol.130 , pp. 518-527
    • Csiszar, A.1    Labinskyy, N.2    Jimenez, R.3
  • 44
    • 77953741269 scopus 로고    scopus 로고
    • Resveratrol confers endothelial protection via activation of the antioxidant transcription factor nrf2
    • Ungvari Z, Bagi Z, Feher A, et al. Resveratrol confers endothelial protection via activation of the antioxidant transcription factor Nrf2. Am J Physiol Heart circ Physiol. 2010;299:H18-H24.
    • (2010) Am J Physiol Heart Circ Physiol. , vol.299
    • Ungvari, Z.1    Bagi, Z.2    Feher, A.3
  • 45
    • 79955068967 scopus 로고    scopus 로고
    • Adaptive induction of NF-E2-related factor-2-driven antioxidant genes in endothelial cells in response to hyperglycemia
    • Ungvari Z, Bailey-Downs L, Gautam T, et al. Adaptive induction of NF-E2-related factor-2-driven antioxidant genes in endothelial cells in response to hyperglycemia. Am J Physiol Heart circ Physiol. 2011;300:H1133-H1140.
    • (2011) Am J Physiol Heart Circ Physiol. , vol.300
    • Ungvari, Z.1    Bailey-Downs, L.2    Gautam, T.3
  • 46
    • 57049148002 scopus 로고    scopus 로고
    • Molecular characterization of human argonaute-containing ribonucleoprotein complexes and their bound target mRNAs
    • Landthaler M, Gaidatzis D, Rothballer A, et al. Molecular characterization of human Argonaute-containing ribonucleoprotein complexes and their bound target mRNAs. Rna. 2008;14:2580-2596.
    • (2008) RNA , vol.14 , pp. 2580-2596
    • Landthaler, M.1    Gaidatzis, D.2    Rothballer, A.3
  • 47
    • 84859077841 scopus 로고    scopus 로고
    • Liver-specific knockdown of IGF-1 decreases vascular oxidative stress resistance by impairing the nrf2-dependent antioxidant response: A novel model of vascular aging
    • Bailey-Downs LC, Mitschelen M, Sosnowska D, et al. Liver-specific knockdown of IGF-1 decreases vascular oxidative stress resistance by impairing the Nrf2-dependent antioxidant response: a novel model of vascular aging. J Gerontol a Biol Sci Med Sci. 2011;67:313-329.
    • (2011) J Gerontol a Biol Sci Med Sci. , vol.67 , pp. 313-329
    • Bailey-Downs, L.C.1    Mitschelen, M.2    Sosnowska, D.3
  • 48
    • 84861059895 scopus 로고    scopus 로고
    • Growth hormone and IGF-1 deficiency exacerbate high-fat diet-induced endothelial impairment in obese lewis dwarf rats: Implications for vascular aging
    • Bailey-Downs LC, Sosnowska D, Toth P, et al. Growth hormone and IGF-1 deficiency exacerbate high-fat diet-induced endothelial impairment in obese Lewis dwarf rats: implications for vascular aging. J Gerontol a Biol Sci Med Sci. 2012;67:553-564.
    • (2012) J Gerontol a Biol Sci Med Sci. , vol.67 , pp. 553-564
    • Bailey-Downs, L.C.1    Sosnowska, D.2    Toth, P.3
  • 49
    • 84861865625 scopus 로고    scopus 로고
    • Age-associated proinflammatory secretory phenotype in vascular smooth muscle cells from the non-human primate macaca mulatta: Reversal by resveratrol treatment
    • Csiszar A, Sosnowska D, Wang M, Lakatta EG, Sonntag WE, Ungvari Z. Age-associated proinflammatory secretory phenotype in vascular smooth muscle cells from the non-human primate Macaca mulatta: reversal by resveratrol treatment. J Gerontol a Biol Sci Med Sci. 2012; 67:811-820.
    • (2012) J Gerontol a Biol Sci Med Sci. , vol.67 , pp. 811-820
    • Csiszar, A.1    Sosnowska, D.2    Wang, M.3    Lakatta, E.G.4    Sonntag, W.E.5    Ungvari, Z.6
  • 50
    • 77958061482 scopus 로고    scopus 로고
    • Vasoprotective effects of life span-extending peripubertal GH replacement in lewis dwarf rats
    • Ungvari Z, Gautam T, Koncz P, et al. Vasoprotective effects of life span-extending peripubertal GH replacement in Lewis dwarf rats. J Gerontol a Biol Sci Med Sci. 2010;65:1145-1156.
    • (2010) J Gerontol a Biol Sci Med Sci. , vol.65 , pp. 1145-1156
    • Ungvari, Z.1    Gautam, T.2    Koncz, P.3
  • 51
    • 84866346444 scopus 로고    scopus 로고
    • Disruption of nrf2 signaling impairs angiogenic capacity of endothelial cells: Implications for microvascular aging
    • Valcarcel-Ares MN, Gautam T, Warrington JP, et al. Disruption of Nrf2 signaling impairs angiogenic capacity of endothelial cells: implications for microvascular aging. J Gerontol a Biol Sci Med Sci. 2012;67:821-829.
    • (2012) J Gerontol a Biol Sci Med Sci. , vol.67 , pp. 821-829
    • Valcarcel-Ares, M.N.1    Gautam, T.2    Warrington, J.P.3
  • 53
    • 79961043903 scopus 로고    scopus 로고
    • Vascular oxidative stress in aging: A homeostatic failure due to dysregulation of NRF2-mediated antioxidant response
    • Ungvari Z, Bailey-Downs L, Sosnowska D, et al. Vascular oxidative stress in aging: a homeostatic failure due to dysregulation of NRF2-mediated antioxidant response. Am J Physiol Heart circ Physiol. 2011;301:H363-H372.
    • (2011) Am J Physiol Heart Circ Physiol. , vol.301
    • Ungvari, Z.1    Bailey-Downs, L.2    Sosnowska, D.3
  • 55
    • 67649878155 scopus 로고    scopus 로고
    • Tie2cre-induced inactivation of the miRNA-processing enzyme dicer disrupts invariant NKT cell development
    • Zhou L, Seo KH, He HZ, et al. Tie2cre-induced inactivation of the miRNA-processing enzyme Dicer disrupts invariant NKT cell development. Proc natl acad Sci USa. 2009;106:10266-10271.
    • (2009) Proc Natl Acad Sci USa. , vol.106 , pp. 10266-10271
    • Zhou, L.1    Seo, K.H.2    He, H.Z.3
  • 56
    • 84857708170 scopus 로고    scopus 로고
    • Atheroprotective communication between endothelial cells and smooth muscle cells through miRNAs
    • Hergenreider E, Heydt S, Tréguer K, et al. Atheroprotective communication between endothelial cells and smooth muscle cells through miRNAs. Nat Cell Biol. 2012;14:249-256.
    • (2012) Nat Cell Biol. , vol.14 , pp. 249-256
    • Hergenreider, E.1    Heydt, S.2    Tréguer, K.3
  • 57
    • 61949361268 scopus 로고    scopus 로고
    • MicroRNAs as novel regulators of angiogenesis
    • Suárez Y, Sessa WC. MicroRNAs as novel regulators of angiogenesis. Circ Res. 2009;104:442-454.
    • (2009) Circ Res. , vol.104 , pp. 442-454
    • Suárez, Y.1    Sessa, W.C.2
  • 58
    • 80051518362 scopus 로고    scopus 로고
    • Age-dependent increases in apoptosis/necrosis ratios in human lymphocytes exposed to oxidative stress
    • Behrens MI, Silva M, Schmied A, et al. Age-dependent increases in apoptosis/necrosis ratios in human lymphocytes exposed to oxidative stress. J Gerontol a Biol Sci Med Sci. 2011;66:732-740.
    • (2011) J Gerontol a Biol Sci Med Sci. , vol.66 , pp. 732-740
    • Behrens, M.I.1    Silva, M.2    Schmied, A.3
  • 59
    • 84859090919 scopus 로고    scopus 로고
    • The delayed impact of parental age on offspring mortality in mice
    • Carnes BA, Riesch R, Schlupp I. The delayed impact of parental age on offspring mortality in mice. J Gerontol a Biol Sci Med Sci. 2012;67:351-357.
    • (2012) J Gerontol a Biol Sci Med Sci. , vol.67 , pp. 351-357
    • Carnes, B.A.1    Riesch, R.2    Schlupp, I.3
  • 60
    • 80053526646 scopus 로고    scopus 로고
    • Aloe vera or resveratrol supplementation in larval diet delays adult aging in the fruit fly, drosophila melanogaster
    • Chandrashekara KT, Shakarad MN. Aloe vera or resveratrol supplementation in larval diet delays adult aging in the fruit fly, Drosophila melanogaster. J Gerontol a Biol Sci Med Sci. 2011;66:965-971.
    • (2011) J Gerontol a Biol Sci Med Sci. , vol.66 , pp. 965-971
    • Chandrashekara, K.T.1    Shakarad, M.N.2
  • 61
    • 81055144367 scopus 로고    scopus 로고
    • Effect of aging on power output properties in rat skinned cardiac myocytes
    • Chung E, Diffee GM. Effect of aging on power output properties in rat skinned cardiac myocytes. J Gerontol a Biol Sci Med Sci. 2011;66:1267-1273.
    • (2011) J Gerontol a Biol Sci Med Sci. , vol.66 , pp. 1267-1273
    • Chung, E.1    Diffee, G.M.2
  • 62
    • 84860124221 scopus 로고    scopus 로고
    • Chronic inhibition of the respiratory chain in human fibroblast cultures: Differential responses related to subject chronological and biological age
    • Dekker P, van Baalen LM, Dirks RW, et al. Chronic inhibition of the respiratory chain in human fibroblast cultures: differential responses related to subject chronological and biological age. J Gerontol a Biol Sci Med Sci. 2012;67:456-464.
    • (2012) J Gerontol a Biol Sci Med Sci. , vol.67 , pp. 456-464
    • Dekker, P.1    Van Baalen, L.M.2    Dirks, R.W.3
  • 63
    • 84866384631 scopus 로고    scopus 로고
    • Age- and sex-associated plasma proteomic changes in growth hormone receptor gene-disrupted mice
    • Ding J, Berryman DE, Jara A, Kopchick JJ. Age- and sex-associated plasma proteomic changes in growth hormone receptor gene-disrupted mice. J Gerontol a Biol Sci Med Sci. 2012;67:830-840.
    • (2012) J Gerontol a Biol Sci Med Sci. , vol.67 , pp. 830-840
    • Ding, J.1    Berryman, D.E.2    Jara, A.3    Kopchick, J.J.4
  • 64
    • 84856206761 scopus 로고    scopus 로고
    • Age-related neointimal hyperplasia is associated with monocyte infiltration after balloon angioplasty
    • Eghbalieh SD, Chowdhary P, Muto A, et al. Age-related neointimal hyperplasia is associated with monocyte infiltration after balloon angioplasty. J Gerontol a Biol Sci Med Sci. 2012;67:109-117.
    • (2012) J Gerontol a Biol Sci Med Sci. , vol.67 , pp. 109-117
    • Eghbalieh, S.D.1    Chowdhary, P.2    Muto, A.3
  • 65
    • 80054878618 scopus 로고    scopus 로고
    • Parental longevity and diabetes risk in the diabetes prevention program
    • Florez H, Ma Y, Crandall JP, et al. Parental longevity and diabetes risk in the Diabetes Prevention Program. J Gerontol a Biol Sci Med Sci. 2011;66:1211-1217.
    • (2011) J Gerontol a Biol Sci Med Sci. , vol.66 , pp. 1211-1217
    • Florez, H.1    Ma, Y.2    Crandall, J.P.3
  • 66
    • 80051529660 scopus 로고    scopus 로고
    • Effect of a combined treatment with growth hormone and melatonin in the cardiological aging on male SAMP8 mice
    • Forman K, Vara E, García C, et al. Effect of a combined treatment with growth hormone and melatonin in the cardiological aging on male SAMP8 mice. J Gerontol a Biol Sci Med Sci. 2011;66:823-834.
    • (2011) J Gerontol a Biol Sci Med Sci. , vol.66 , pp. 823-834
    • Forman, K.1    Vara, E.2    García, C.3
  • 67
    • 80052912001 scopus 로고    scopus 로고
    • Expression of key regulators of mitochondrial biogenesis in growth hormone receptor knockout (GHRKO) mice is enhanced but is not further improved by other potential life-extending interventions
    • Gesing A, Masternak MM, Wang F, et al. Expression of key regulators of mitochondrial biogenesis in growth hormone receptor knockout (GHRKO) mice is enhanced but is not further improved by other potential life-extending interventions. J Gerontol a Biol Sci Med Sci. 2011;66:1062-1076.
    • (2011) J Gerontol a Biol Sci Med Sci. , vol.66 , pp. 1062-1076
    • Gesing, A.1    Masternak, M.M.2    Wang, F.3
  • 68
    • 79957833473 scopus 로고    scopus 로고
    • Age-related changes in proliferation, the numbers of mast cells, eosinophils, and cd45-positive cells in human dermis
    • Gunin AG, Kornilova NK, Vasilieva OV, Petrov VV. Age-related changes in proliferation, the numbers of mast cells, eosinophils, and cd45-positive cells in human dermis. J Gerontol a Biol Sci Med Sci. 2011;66:385-392.
    • (2011) J Gerontol a Biol Sci Med Sci. , vol.66 , pp. 385-392
    • Gunin, A.G.1    Kornilova, N.K.2    Vasilieva, O.V.3    Petrov, V.V.4
  • 69
    • 84860193757 scopus 로고    scopus 로고
    • Relationship between serum adiponectin levels and disability-free survival among community-dwelling elderly individuals: The tsurugaya project
    • Hozawa A, Sugawara Y, Tomata Y, et al. Relationship between serum adiponectin levels and disability-free survival among community-dwelling elderly individuals: the Tsurugaya Project. J Gerontol a Biol Sci Med Sci. 2012;67:530-536.
    • (2012) J Gerontol a Biol Sci Med Sci. , vol.67 , pp. 530-536
    • Hozawa, A.1    Sugawara, Y.2    Tomata, Y.3
  • 70
    • 80053471809 scopus 로고    scopus 로고
    • Subclinical vascular disease burden and risk for death and cardiovascular events in older community dwellers
    • Inzitari M, Arnold AM, Patel K V, et al. Subclinical vascular disease burden and risk for death and cardiovascular events in older community dwellers. J Gerontol a Biol Sci Med Sci. 2011;66:986-993.
    • (2011) J Gerontol a Biol Sci Med Sci. , vol.66 , pp. 986-993
    • Inzitari, M.1    Arnold, A.M.2    Patel, K.V.3
  • 71
    • 84856167075 scopus 로고    scopus 로고
    • Metabolic syndrome and cognitive decline among the oldest old in okinawa: In search of a mechanism
    • The KOCOA Project
    • Katsumata Y, Todoriki H, Higashiuesato Y, et al. Metabolic syndrome and cognitive decline among the oldest old in Okinawa: in search of a mechanism. The KOCOA Project. J Gerontol a Biol Sci Med Sci. 2012;67:126-134.
    • (2012) J Gerontol a Biol Sci Med Sci. , vol.67 , pp. 126-134
    • Katsumata, Y.1    Todoriki, H.2    Higashiuesato, Y.3
  • 72
    • 79955125211 scopus 로고    scopus 로고
    • Resveratrol improves insulin resistance hyperglycemia and hepatosteatosis but not hypertriglyc-eridemia, inflammation, and life span in a mouse model for werner syndrome
    • Labbé A, Garand C, Cogger VC, et al. Resveratrol improves insulin resistance hyperglycemia and hepatosteatosis but not hypertriglyc-eridemia, inflammation, and life span in a mouse model for Werner syndrome. J Gerontol a Biol Sci Med Sci. 2011;66:264-278.
    • (2011) J Gerontol a Biol Sci Med Sci. , vol.66 , pp. 264-278
    • Labbé, A.1    Garand, C.2    Cogger, V.C.3
  • 73
    • 79957794634 scopus 로고    scopus 로고
    • Salicylate treatment improves age-associated vascular endothelial dysfunction: Potential role of nuclear factor kappaB and forkhead box O phosphorylation
    • Lesniewski LA, Durrant JR, Connell ML, Folian BJ, Donato AJ, Seals DR. Salicylate treatment improves age-associated vascular endothelial dysfunction: potential role of nuclear factor kappaB and forkhead Box O phosphorylation. J Gerontol a Biol Sci Med Sci. 2011;66:409-418.
    • (2011) J Gerontol a Biol Sci Med Sci. , vol.66 , pp. 409-418
    • Lesniewski, L.A.1    Durrant, J.R.2    Connell, M.L.3    Folian, B.J.4    Donato, A.J.5    Seals, D.R.6
  • 74
    • 84856160485 scopus 로고    scopus 로고
    • Balance between macronutrients affects life span and functional senescence in fruit fly drosophila melanogaster
    • Lushchak OV, Gospodaryov DV, Rovenko BM, et al. Balance between macronutrients affects life span and functional senescence in fruit fly Drosophila melanogaster. J Gerontol a Biol Sci Med Sci. 2012;67:118-125.
    • (2012) J Gerontol a Biol Sci Med Sci. , vol.67 , pp. 118-125
    • Lushchak, O.V.1    Gospodaryov, D.V.2    Rovenko, B.M.3
  • 76
    • 80054938455 scopus 로고    scopus 로고
    • Reduced insulin-like growth factor-I serum levels in formerly obese women subjected to laparoscopic-adjustable gastric banding or diet-induced long-term caloric restriction
    • Mitterberger MC, Mattesich M, Klaver E, Piza-Katzer H, Zwerschke W. Reduced insulin-like growth factor-I serum levels in formerly obese women subjected to laparoscopic-adjustable gastric banding or diet-induced long-term caloric restriction. J Gerontol a Biol Sci Med Sci. 2011;66:1169-1177.
    • (2011) J Gerontol a Biol Sci Med Sci. , vol.66 , pp. 1169-1177
    • Mitterberger, M.C.1    Mattesich, M.2    Klaver, E.3    Piza-Katzer, H.4    Zwerschke, W.5
  • 77
    • 80054943401 scopus 로고    scopus 로고
    • The effects of a higher protein intake during energy restriction on changes in body composition and physical function in older women
    • Mojtahedi MC, Thorpe MP, Karampinos DC, et al. The effects of a higher protein intake during energy restriction on changes in body composition and physical function in older women. J Gerontol a Biol Sci Med Sci. 2011;66:1218-1225.
    • (2011) J Gerontol a Biol Sci Med Sci. , vol.66 , pp. 1218-1225
    • Mojtahedi, M.C.1    Thorpe, M.P.2    Karampinos, D.C.3
  • 79
    • 81055144368 scopus 로고    scopus 로고
    • Thioredoxin 1 overexpression extends mainly the earlier Part of life span in mice
    • Pérez VI, Cortez LA, Lew CM, et al. Thioredoxin 1 overexpression extends mainly the earlier part of life span in mice. J Gerontol a Biol Sci Med Sci. 2011;66:1286-1299.
    • (2011) J Gerontol a Biol Sci Med Sci. , vol.66 , pp. 1286-1299
    • Pérez, V.I.1    Cortez, L.A.2    Lew, C.M.3
  • 80
    • 79951631209 scopus 로고    scopus 로고
    • Design and conduct of the CALERIE study: Comprehensive assessment of the long-term effects of reducing intake of energy
    • Rochon J, Bales CW, Ravussin E, et al. Design and conduct of the CALERIE study: comprehensive assessment of the long-term effects of reducing intake of energy. J Gerontol a Biol Sci Med Sci. 2011;66:97-108.
    • (2011) J Gerontol a Biol Sci Med Sci. , vol.66 , pp. 97-108
    • Rochon, J.1    Bales, C.W.2    Ravussin, E.3
  • 81
    • 84859048006 scopus 로고    scopus 로고
    • Discovery of functional gene variants associated with human longevity: Opportunities and challenges
    • Tazearslan C, Cho M, Suh Y. Discovery of functional gene variants associated with human longevity: opportunities and challenges. J Gerontol a Biol Sci Med Sci. 2012;67:376-383.
    • (2012) J Gerontol a Biol Sci Med Sci. , vol.67 , pp. 376-383
    • Tazearslan, C.1    Cho, M.2    Suh, Y.3
  • 82
    • 84856155757 scopus 로고    scopus 로고
    • Mediterranean diet supplemented with coenzyme Q10 modifies the expression of proinflammatory and endoplasmic reticulum stress-related genes in elderly men and women
    • Yubero-Serrano EM, Gonzalez-Guardia L, Rangel-Zuñiga O, et al. Mediterranean diet supplemented with coenzyme Q10 modifies the expression of proinflammatory and endoplasmic reticulum stress-related genes in elderly men and women. J Gerontol a Biol Sci Med Sci. 2012;67:3-10.
    • (2012) J Gerontol a Biol Sci Med Sci. , vol.67 , pp. 3-10
    • Yubero-Serrano, E.M.1    Gonzalez-Guardia, L.2    Rangel-Zuñiga, O.3
  • 83
    • 84861072266 scopus 로고    scopus 로고
    • Aging, synaptic dysfunction, and insulin-like growth factor (IGF)-1
    • Deak F, Sonntag WE. Aging, synaptic dysfunction, and insulin-like growth factor (IGF)-1. J Gerontol a Biol Sci Med Sci. 2012;67:611-625.
    • (2012) J Gerontol a Biol Sci Med Sci. , vol.67 , pp. 611-625
    • Deak, F.1    Sonntag, W.E.2
  • 84
    • 84880556127 scopus 로고    scopus 로고
    • Short-term treatment with rapamycin and dietary restriction have overlapping and distinctive effects in young mice
    • Fok WC, Zhang Y, Salmon AB, et al. Short-term treatment with rapamycin and dietary restriction have overlapping and distinctive effects in young mice. J Gerontol a Biol Sci Med Sci. 2012.
    • (2012) J Gerontol a Biol Sci Med Sci.
    • Fok, W.C.1    Zhang, Y.2    Salmon, A.B.3
  • 85
    • 84861025869 scopus 로고    scopus 로고
    • Oxidative damage, platelet activation, and inflammation to predict mobility disability and mortality in older persons: Results from the health aging and body composition study
    • Cesari M, Kritchevsky SB, Nicklas B, et al. Oxidative damage, platelet activation, and inflammation to predict mobility disability and mortality in older persons: results from the health aging and body composition study. J Gerontol a Biol Sci Med Sci. 2012;67:671-676.
    • (2012) J Gerontol a Biol Sci Med Sci. , vol.67 , pp. 671-676
    • Cesari, M.1    Kritchevsky, S.B.2    Nicklas, B.3
  • 86
    • 84863669043 scopus 로고    scopus 로고
    • Session III: Mechanisms of age-related cognitive change and targets for intervention: Inflammatory, oxidative, and metabolic processes
    • Craft S, Foster TC, Landfield PW, Maier SF, Resnick SM, Yaffe K. Session III: mechanisms of age-related cognitive change and targets for intervention: inflammatory, oxidative, and metabolic processes. J Gerontol a Biol Sci Med Sci. 2012;67:754-759.
    • (2012) J Gerontol a Biol Sci Med Sci. , vol.67 , pp. 754-759
    • Craft, S.1    Foster, T.C.2    Landfield, P.W.3    Maier, S.F.4    Resnick, S.M.5    Yaffe, K.6
  • 87
    • 84866112645 scopus 로고    scopus 로고
    • Review: Quantifying mitochondrial dysfunction in complex diseases of aging
    • Horan MP, Pichaud N, Ballard JW. Review: quantifying mitochondrial dysfunction in complex diseases of aging. J Gerontol a Biol Sci Med Sci. 2012;67:1022-1035.
    • (2012) J Gerontol a Biol Sci Med Sci. , vol.67 , pp. 1022-1035
    • Horan, M.P.1    Pichaud, N.2    Ballard, J.W.3
  • 93
    • 84866414069 scopus 로고    scopus 로고
    • The association of dementia with upper arm and waist circumference in seven low- and middle-income countries: The 10/66 cross-sectional surveys
    • Taylor CL, Albanese E, Stewart R. The association of dementia with upper arm and waist circumference in seven low- and middle-income countries: the 10/66 cross-sectional surveys. J Gerontol a Biol Sci Med Sci. 2012;67:897-904.
    • (2012) J Gerontol a Biol Sci Med Sci. , vol.67 , pp. 897-904
    • Taylor, C.L.1    Albanese, E.2    Stewart, R.3
  • 94
    • 84866097416 scopus 로고    scopus 로고
    • Brain white matter hyperintensities, executive dysfunction, instability, and falls in older people: A prospective cohort study
    • Zheng JJ, Lord SR, Close JC, et al. Brain white matter hyperintensities, executive dysfunction, instability, and falls in older people: a prospective cohort study. J Gerontol a Biol Sci Med Sci. 2012;67:1085-1091.
    • (2012) J Gerontol a Biol Sci Med Sci. , vol.67 , pp. 1085-1091
    • Zheng, J.J.1    Lord, S.R.2    Close, J.C.3
  • 95
    • 70350134022 scopus 로고    scopus 로고
    • MicroRNA 217 modulates endothelial cell senescence via silent information regulator 1
    • Menghini R, Casagrande V, Cardellini M, et al. MicroRNA 217 modulates endothelial cell senescence via silent information regulator 1. circulation. 2009;120:1524-1532.
    • (2009) Circulation , vol.120 , pp. 1524-1532
    • Menghini, R.1    Casagrande, V.2    Cardellini, M.3
  • 96
    • 79960686440 scopus 로고    scopus 로고
    • MiR-146a is modulated in human endothelial cell with aging
    • Vasa-Nicotera M, Chen H, Tucci P, et al. miR-146a is modulated in human endothelial cell with aging. atherosclerosis. 2011;217:326-330.
    • (2011) Atherosclerosis , vol.217 , pp. 326-330
    • Vasa-Nicotera, M.1    Chen, H.2    Tucci, P.3
  • 97
    • 80051546031 scopus 로고    scopus 로고
    • Flow-dependent regulation of kruppel-like factor 2 is mediated by MicroRNA-92a
    • Wu W, Xiao H, Laguna-Fernandez A, et al. Flow-Dependent Regulation of Kruppel-Like Factor 2 Is Mediated by MicroRNA-92a. circulation. 2011;124:633-641.
    • (2011) Circulation , vol.124 , pp. 633-641
    • Wu, W.1    Xiao, H.2    Laguna-Fernandez, A.3
  • 98
    • 57349111762 scopus 로고    scopus 로고
    • Downregulation of dicer expression by serum withdrawal sensitizes human endothelial cells to apoptosis
    • Asada S, Takahashi T, Isodono K, et al. Downregulation of Dicer expression by serum withdrawal sensitizes human endothelial cells to apoptosis. Am J Physiol Heart circ Physiol. 2008;295:H2512-H2521.
    • (2008) Am J Physiol Heart Circ Physiol. , vol.295
    • Asada, S.1    Takahashi, T.2    Isodono, K.3
  • 103
    • 40749106180 scopus 로고    scopus 로고
    • Evidence for the involvement of miRNA in redox regulated angiogenic response of human microvascular endothelial cells
    • Shilo S, Roy S, Khanna S, Sen CK. Evidence for the involvement of miRNA in redox regulated angiogenic response of human microvascular endothelial cells. arterioscler thromb vasc Biol. 2008;28:471-477.
    • (2008) Arterioscler Thromb Vasc Biol. , vol.28 , pp. 471-477
    • Shilo, S.1    Roy, S.2    Khanna, S.3    Sen, C.K.4
  • 105
    • 48349144852 scopus 로고    scopus 로고
    • Resveratrol delays age-related deterioration and mimics transcriptional aspects of dietary restriction without extending life span
    • Pearson KJ, Baur JA, Lewis KN, et al. Resveratrol delays age-related deterioration and mimics transcriptional aspects of dietary restriction without extending life span. cell Metab. 2008;8:157-168.
    • (2008) Cell Metab. , vol.8 , pp. 157-168
    • Pearson, K.J.1    Baur, J.A.2    Lewis, K.N.3
  • 106
    • 84858142662 scopus 로고    scopus 로고
    • MicroRNAs and their roles in aging
    • Smith-Vikos T, Slack FJ. MicroRNAs and their roles in aging. J cell Sci. 2012;125:7-17.
    • (2012) J Cell Sci. , vol.125 , pp. 7-17
    • Smith-Vikos, T.1    Slack, F.J.2
  • 107
    • 84859942977 scopus 로고    scopus 로고
    • The expression of microRNA and micro-RNA clusters in the aging heart
    • Zhang X, Azhar G, Wei JY. The expression of microRNA and micro-RNA clusters in the aging heart. PloS one. 2012;7:e34688.
    • (2012) PLoS ONE , vol.7
    • Zhang, X.1    Azhar, G.2    Wei, J.Y.3
  • 108
    • 80255137053 scopus 로고    scopus 로고
    • MicroRNA-29 in aortic dilation: Implications for aneurysm formation
    • Boon RA, Seeger T, Heydt S, et al. MicroRNA-29 in aortic dilation: implications for aneurysm formation. Circ Res. 2011;109:1115-1119.
    • (2011) Circ Res. , vol.109 , pp. 1115-1119
    • Boon, R.A.1    Seeger, T.2    Heydt, S.3
  • 109
    • 84861039990 scopus 로고    scopus 로고
    • Diverse roles of growth hormone and insulin-like growth factor-1 in mammalian aging: Progress and controversies
    • Sonntag WE, Csiszar A, deCabo R, Ferrucci L, Ungvari Z. Diverse roles of growth hormone and insulin-like growth factor-1 in mammalian aging: progress and controversies. J Gerontol a Biol Sci Med Sci. 2012;67:587-598.
    • (2012) J Gerontol a Biol Sci Med Sci. , vol.67 , pp. 587-598
    • Sonntag, W.E.1    Csiszar, A.2    De Cabo, R.3    Ferrucci, L.4    Ungvari, Z.5
  • 110
    • 84858342300 scopus 로고    scopus 로고
    • Brain regional angiogenic potential at the neurovascular unit during normal aging
    • Murugesan N, Demarest TG, Madri JA, Pachter JS. Brain regional angiogenic potential at the neurovascular unit during normal aging. neurobiol aging. 2012;33:1004.e1-1004.16.
    • (2012) Neurobiol Aging , vol.33
    • Murugesan, N.1    Demarest, T.G.2    Madri, J.A.3    Pachter, J.S.4
  • 111
    • 70350561897 scopus 로고    scopus 로고
    • Attenuation of brain response to vascular endothelial growth factor-mediated angiogenesis and neurogenesis in aged mice
    • Gao P, Shen F, Gabriel RA, et al. Attenuation of brain response to vascular endothelial growth factor-mediated angiogenesis and neurogenesis in aged mice. Stroke. 2009;40:3596-3600.
    • (2009) Stroke , vol.40 , pp. 3596-3600
    • Gao, P.1    Shen, F.2    Gabriel, R.A.3


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