메뉴 건너뛰기




Volumn 46, Issue 1, 2017, Pages 143-154

The Gut Microbiota in Inflammatory Bowel Disease

Author keywords

Crohn's disease; Fecal microbial transplantation; Inflammatory bowel disease; Microbiota; Ulcerative colitis

Indexed keywords

PREBIOTIC AGENT; PROBIOTIC AGENT;

EID: 85008502005     PISSN: 08898553     EISSN: 15581942     Source Type: Journal    
DOI: 10.1016/j.gtc.2016.09.011     Document Type: Review
Times cited : (84)

References (50)
  • 1
    • 84898809123 scopus 로고    scopus 로고
    • The microbiome in inflammatory bowel disease: current status and the future ahead
    • 1 Kostic, A.D., Xavier, R.J., Gevers, D., The microbiome in inflammatory bowel disease: current status and the future ahead. Gastroenterology 146 (2014), 1489–1499.
    • (2014) Gastroenterology , vol.146 , pp. 1489-1499
    • Kostic, A.D.1    Xavier, R.J.2    Gevers, D.3
  • 2
    • 84902657697 scopus 로고    scopus 로고
    • Inflammatory bowel disease as a model for translating the microbiome
    • 2 Huttenhower, C., Kostic, A.D., Xavier, R.J., Inflammatory bowel disease as a model for translating the microbiome. Immunity 40 (2014), 843–854.
    • (2014) Immunity , vol.40 , pp. 843-854
    • Huttenhower, C.1    Kostic, A.D.2    Xavier, R.J.3
  • 3
    • 84907557973 scopus 로고    scopus 로고
    • The microbial basis of inflammatory bowel diseases
    • 3 Dalal, S.R., Chang, E.B., The microbial basis of inflammatory bowel diseases. J Clin Invest 124 (2014), 4190–4196.
    • (2014) J Clin Invest , vol.124 , pp. 4190-4196
    • Dalal, S.R.1    Chang, E.B.2
  • 4
    • 84951919076 scopus 로고    scopus 로고
    • Immunopathogenesis of IBD: current state of the art
    • 4 de Souza, H.S., Fiocchi, C., Immunopathogenesis of IBD: current state of the art. Nat Rev Gastroenterol Hepatol 13 (2016), 13–27.
    • (2016) Nat Rev Gastroenterol Hepatol , vol.13 , pp. 13-27
    • de Souza, H.S.1    Fiocchi, C.2
  • 5
    • 84867214356 scopus 로고    scopus 로고
    • The gut microbiota-a clinical perspective on lessons learned
    • 5 Shanahan, F., The gut microbiota-a clinical perspective on lessons learned. Nat Rev Gastroenterol Hepatol 9 (2012), 609–614.
    • (2012) Nat Rev Gastroenterol Hepatol , vol.9 , pp. 609-614
    • Shanahan, F.1
  • 6
    • 84962193496 scopus 로고    scopus 로고
    • Dysbiosis in intestinal inflammation: cause or consequence
    • 6 Buttớ, L.F., Haller, D., Dysbiosis in intestinal inflammation: cause or consequence. Int J Med Microbiol 306:5 (2016), 302–309.
    • (2016) Int J Med Microbiol , vol.306 , Issue.5 , pp. 302-309
    • Buttớ, L.F.1    Haller, D.2
  • 7
    • 84965002935 scopus 로고    scopus 로고
    • How colonization by microbiota in early life shapes the immune system
    • 7 Gensollen, T., Iyer, S.S., Kasper, D.L., et al. How colonization by microbiota in early life shapes the immune system. Science 352:6285 (2016), 539–544.
    • (2016) Science , vol.352 , Issue.6285 , pp. 539-544
    • Gensollen, T.1    Iyer, S.S.2    Kasper, D.L.3
  • 8
    • 50249143099 scopus 로고    scopus 로고
    • Disorders of a modern lifestyle: reconciling the epidemiology of inflammatory bowel diseases
    • 8 Bernstein, C.N., Shanahan, F., Disorders of a modern lifestyle: reconciling the epidemiology of inflammatory bowel diseases. Gut 57:9 (2008), 1185–1191.
    • (2008) Gut , vol.57 , Issue.9 , pp. 1185-1191
    • Bernstein, C.N.1    Shanahan, F.2
  • 9
    • 84964330988 scopus 로고    scopus 로고
    • Microbial contributions to chronic inflammation and metabolic disease
    • 9 Shanahan, F., Sheehan, D., Microbial contributions to chronic inflammation and metabolic disease. Curr Opin Clin Nutr Metab Care 19 (2016), 257–262.
    • (2016) Curr Opin Clin Nutr Metab Care , vol.19 , pp. 257-262
    • Shanahan, F.1    Sheehan, D.2
  • 10
    • 84976347278 scopus 로고    scopus 로고
    • Time to abandon the hygiene hypothesis: new perspectives on allergic disease, the human microbiome, infectious disease prevention and the role of targeted hygiene
    • 10 Bloomfield, S.F., Rook, G.A., Scott, E.A., et al. Time to abandon the hygiene hypothesis: new perspectives on allergic disease, the human microbiome, infectious disease prevention and the role of targeted hygiene. Perspect Public Health 136 (2016), 213–224.
    • (2016) Perspect Public Health , vol.136 , pp. 213-224
    • Bloomfield, S.F.1    Rook, G.A.2    Scott, E.A.3
  • 11
    • 84960373289 scopus 로고    scopus 로고
    • Identification of an anti-inflammatory protein from Faecalibacterium prausnitzii, a commensal bacterium deficient in Crohn's disease
    • 11 Quévrain, E., Maubert, M.A., Michon, C., et al. Identification of an anti-inflammatory protein from Faecalibacterium prausnitzii, a commensal bacterium deficient in Crohn's disease. Gut 65 (2016), 415–425.
    • (2016) Gut , vol.65 , pp. 415-425
    • Quévrain, E.1    Maubert, M.A.2    Michon, C.3
  • 12
    • 84966293351 scopus 로고    scopus 로고
    • Gene-microbiota interactions contribute to the pathogenesis of inflammatory bowel disease
    • 12 Chu, H., Khosravi, A., Kusumawardhani, I.P., et al. Gene-microbiota interactions contribute to the pathogenesis of inflammatory bowel disease. Science 352 (2016), 1116–1120.
    • (2016) Science , vol.352 , pp. 1116-1120
    • Chu, H.1    Khosravi, A.2    Kusumawardhani, I.P.3
  • 13
    • 56249135538 scopus 로고    scopus 로고
    • A key role for autophagy and the autophagy gene Atg16l1 in mouse and human intestinal Paneth cells
    • 13 Cadwell, K., Liu, J.Y., Brown, S.L., et al. A key role for autophagy and the autophagy gene Atg16l1 in mouse and human intestinal Paneth cells. Nature 456 (2008), 259–263.
    • (2008) Nature , vol.456 , pp. 259-263
    • Cadwell, K.1    Liu, J.Y.2    Brown, S.L.3
  • 14
    • 84866436436 scopus 로고    scopus 로고
    • Acute gastrointestinal infection induces long-lived microbiota-specific T cell responses
    • 14 Hand, T.W., Dos Santos, L.M., Bouladoux, N., et al. Acute gastrointestinal infection induces long-lived microbiota-specific T cell responses. Science 337:6101 (2012), 1553–1556.
    • (2012) Science , vol.337 , Issue.6101 , pp. 1553-1556
    • Hand, T.W.1    Dos Santos, L.M.2    Bouladoux, N.3
  • 15
    • 84943653785 scopus 로고    scopus 로고
    • Microbiota-dependent sequelae of acute infection compromise tissue-specific immunity
    • 15 Fonseca, D.M., Hand, T.W., Han, S.J., et al. Microbiota-dependent sequelae of acute infection compromise tissue-specific immunity. Cell 163:2 (2015), 354–366.
    • (2015) Cell , vol.163 , Issue.2 , pp. 354-366
    • Fonseca, D.M.1    Hand, T.W.2    Han, S.J.3
  • 16
    • 84898835480 scopus 로고    scopus 로고
    • Manipulation of the microbiota for treatment of IBS and IBD-challenges and controversies
    • 16 Shanahan, F., Quigley, E.M., Manipulation of the microbiota for treatment of IBS and IBD-challenges and controversies. Gastroenterology 146 (2014), 1554–1563.
    • (2014) Gastroenterology , vol.146 , pp. 1554-1563
    • Shanahan, F.1    Quigley, E.M.2
  • 17
    • 0026715041 scopus 로고
    • The role of gastrointestinal microflora in postsurgical adhesion formation–a study in germfree rats
    • 17 Bothin, C., Midtvedt, T., The role of gastrointestinal microflora in postsurgical adhesion formation–a study in germfree rats. Eur Surg Res 24 (1992), 309–312.
    • (1992) Eur Surg Res , vol.24 , pp. 309-312
    • Bothin, C.1    Midtvedt, T.2
  • 18
    • 0031889086 scopus 로고    scopus 로고
    • Stimulation of transforming growth factor beta1 by enteric bacteria in the pathogenesis of rat intestinal fibrosis
    • 18 Mourelle, M., Salas, A., Guarner, F., et al. Stimulation of transforming growth factor beta1 by enteric bacteria in the pathogenesis of rat intestinal fibrosis. Gastroenterology 114 (1998), 519–526.
    • (1998) Gastroenterology , vol.114 , pp. 519-526
    • Mourelle, M.1    Salas, A.2    Guarner, F.3
  • 19
    • 0032782852 scopus 로고    scopus 로고
    • Bacterial cell wall polymers promote intestinal fibrosis by direct stimulation of myofibroblasts
    • 19 Van Tol, E.A.F., Holt, L., Ling Li, F., et al. Bacterial cell wall polymers promote intestinal fibrosis by direct stimulation of myofibroblasts. Am J Physiol 277 (1999), G245–G255.
    • (1999) Am J Physiol , vol.277 , pp. G245-G255
    • Van Tol, E.A.F.1    Holt, L.2    Ling Li, F.3
  • 20
    • 67650239557 scopus 로고    scopus 로고
    • A new animal model of postsurgical bowel inflammation and fibrosis: the effect of commensal microflora
    • 20 Rigby, R.J., Hunt, M.R., Scull, B.P., et al. A new animal model of postsurgical bowel inflammation and fibrosis: the effect of commensal microflora. Gut 58 (2009), 1104–1112.
    • (2009) Gut , vol.58 , pp. 1104-1112
    • Rigby, R.J.1    Hunt, M.R.2    Scull, B.P.3
  • 21
    • 84871633923 scopus 로고    scopus 로고
    • The colonic microbiota in health and disease
    • 21 Shanahan, F., The colonic microbiota in health and disease. Curr Opin Gastroenterol 29 (2013), 49–54.
    • (2013) Curr Opin Gastroenterol , vol.29 , pp. 49-54
    • Shanahan, F.1
  • 22
    • 84896092821 scopus 로고    scopus 로고
    • The treatment-naive microbiome in new-onset Crohn's disease
    • 22 Gevers, D., Kugathasan, S., Denson, L.A., et al. The treatment-naive microbiome in new-onset Crohn's disease. Cell Host Microbe 15 (2014), 382–392.
    • (2014) Cell Host Microbe , vol.15 , pp. 382-392
    • Gevers, D.1    Kugathasan, S.2    Denson, L.A.3
  • 23
    • 4143069158 scopus 로고    scopus 로고
    • High prevalence of adherent-invasive Escherichia coli associated with ileal mucosa in Crohn's disease
    • 23 Darfeuille-Michaud, A., Boudeau, J., Bulois, P., et al. High prevalence of adherent-invasive Escherichia coli associated with ileal mucosa in Crohn's disease. Gastroenterology 127 (2004), 412–421.
    • (2004) Gastroenterology , vol.127 , pp. 412-421
    • Darfeuille-Michaud, A.1    Boudeau, J.2    Bulois, P.3
  • 24
    • 84866549438 scopus 로고    scopus 로고
    • Dysfunction of the intestinal microbiome in inflammatory bowel disease and treatment
    • 24 Morgan, X.C., Tickle, T.L., Sokol, H., et al. Dysfunction of the intestinal microbiome in inflammatory bowel disease and treatment. Genome Biol, 13, 2012, R79.
    • (2012) Genome Biol , vol.13 , pp. R79
    • Morgan, X.C.1    Tickle, T.L.2    Sokol, H.3
  • 25
    • 67649509224 scopus 로고    scopus 로고
    • Molecular diversity of Escherichia coli in the human gut: new ecological evidence supporting the role of adherent-invasive E. coli (AIEC) in Crohn's disease
    • 25 Martinez-Medina, M., Aldeguer, X., Lopez-Siles, M., et al. Molecular diversity of Escherichia coli in the human gut: new ecological evidence supporting the role of adherent-invasive E. coli (AIEC) in Crohn's disease. Inflamm Bowel Dis 15 (2009), 872–882.
    • (2009) Inflamm Bowel Dis , vol.15 , pp. 872-882
    • Martinez-Medina, M.1    Aldeguer, X.2    Lopez-Siles, M.3
  • 26
    • 79952230127 scopus 로고    scopus 로고
    • Crohn disease–associated adherent-invasive E. coli bacteria target mouse and human Peyer's patches via long polar fimbriae
    • 26 Chassaing, B., Rolhion, N., de Vallee, A., et al. Crohn disease–associated adherent-invasive E. coli bacteria target mouse and human Peyer's patches via long polar fimbriae. J Clin Invest 121 (2011), 966–975.
    • (2011) J Clin Invest , vol.121 , pp. 966-975
    • Chassaing, B.1    Rolhion, N.2    de Vallee, A.3
  • 27
    • 77649194674 scopus 로고    scopus 로고
    • Crohn's disease-associated adherent-invasive E. coli are selectively favoured by impaired autophagy to replicate intracellularly
    • 27 Lapaquette, P., Glasser, A.L., Huett, A., et al. Crohn's disease-associated adherent-invasive E. coli are selectively favoured by impaired autophagy to replicate intracellularly. Cell Microbiol 12 (2010), 99–113.
    • (2010) Cell Microbiol , vol.12 , pp. 99-113
    • Lapaquette, P.1    Glasser, A.L.2    Huett, A.3
  • 28
    • 84941344904 scopus 로고    scopus 로고
    • The ATG16L1-T300A allele impairs clearance of pathosymbionts in the inflamed ileal mucosa of Crohn's disease patients
    • 28 Sadaghian Sadabad, M., Regeling, A., de Goffau, M.C., et al. The ATG16L1-T300A allele impairs clearance of pathosymbionts in the inflamed ileal mucosa of Crohn's disease patients. Gut 64 (2015), 1546–1552.
    • (2015) Gut , vol.64 , pp. 1546-1552
    • Sadaghian Sadabad, M.1    Regeling, A.2    de Goffau, M.C.3
  • 29
    • 55949124035 scopus 로고    scopus 로고
    • Faecalibacterium prausnitzii is an anti-inflammatory commensal bacterium identified by gut microbiota analysis of Crohn disease patients
    • 29 Sokol, H., Pigneur, B., Watterlot, L., et al. Faecalibacterium prausnitzii is an anti-inflammatory commensal bacterium identified by gut microbiota analysis of Crohn disease patients. Proc Natl Acad Sci U S A 105 (2008), 16731–16736.
    • (2008) Proc Natl Acad Sci U S A , vol.105 , pp. 16731-16736
    • Sokol, H.1    Pigneur, B.2    Watterlot, L.3
  • 30
    • 84954099831 scopus 로고    scopus 로고
    • Diet-induced extinctions in the gut microbiota compound over generations
    • 30 Sonnenburg, E.D., Smits, S.A., Tikhonov, M., et al. Diet-induced extinctions in the gut microbiota compound over generations. Nature 529 (2016), 212–215.
    • (2016) Nature , vol.529 , pp. 212-215
    • Sonnenburg, E.D.1    Smits, S.A.2    Tikhonov, M.3
  • 31
    • 84903616167 scopus 로고    scopus 로고
    • Exploiting gut bacteriophages for human health
    • 31 Dalmasso, M., Hill, C., Ross, R.P., Exploiting gut bacteriophages for human health. Trends Microbiol 22 (2014), 399–405.
    • (2014) Trends Microbiol , vol.22 , pp. 399-405
    • Dalmasso, M.1    Hill, C.2    Ross, R.P.3
  • 32
    • 84920929686 scopus 로고    scopus 로고
    • An enteric virus can replace the beneficial function of commensal bacteria
    • 32 Kernbauer, E., Ding, Y., Cadwell, K., An enteric virus can replace the beneficial function of commensal bacteria. Nature 516 (2014), 94–98.
    • (2014) Nature , vol.516 , pp. 94-98
    • Kernbauer, E.1    Ding, Y.2    Cadwell, K.3
  • 33
    • 1942486000 scopus 로고    scopus 로고
    • Ecology of prokaryotic viruses
    • 33 Weinbauer, M.G., Ecology of prokaryotic viruses. FEMS Microbiol Rev 28 (2004), 127–181.
    • (2004) FEMS Microbiol Rev , vol.28 , pp. 127-181
    • Weinbauer, M.G.1
  • 35
    • 39649093188 scopus 로고    scopus 로고
    • Dysbiosis in inflammatory bowel disease: a role for bacteriophages?
    • 35 Lepage, P., Colombet, J., Marteau, P., et al. Dysbiosis in inflammatory bowel disease: a role for bacteriophages?. Gut 57 (2008), 424–425.
    • (2008) Gut , vol.57 , pp. 424-425
    • Lepage, P.1    Colombet, J.2    Marteau, P.3
  • 36
    • 84884563236 scopus 로고    scopus 로고
    • Bacteriophages in gut samples from pediatric Crohn's disease patients: metagenomic analysis using 454 pyrosequencing
    • 36 Wagner, J., Maksimovic, J., Farries, G., et al. Bacteriophages in gut samples from pediatric Crohn's disease patients: metagenomic analysis using 454 pyrosequencing. Inflamm Bowel Dis 19 (2013), 1598–1608.
    • (2013) Inflamm Bowel Dis , vol.19 , pp. 1598-1608
    • Wagner, J.1    Maksimovic, J.2    Farries, G.3
  • 37
    • 84922245262 scopus 로고    scopus 로고
    • Disease-specific alterations in the enteric virome in inflammatory bowel disease
    • 37 Norman, J.M., Handley, S.A., Baldridge, M.T., et al. Disease-specific alterations in the enteric virome in inflammatory bowel disease. Cell 160 (2015), 447–460.
    • (2015) Cell , vol.160 , pp. 447-460
    • Norman, J.M.1    Handley, S.A.2    Baldridge, M.T.3
  • 38
    • 80053528043 scopus 로고    scopus 로고
    • The human gut virome: inter-individual variation and dynamic response to diet
    • 38 Minot, S., Sinha, R., Chen, J., et al. The human gut virome: inter-individual variation and dynamic response to diet. Genome Res 21 (2011), 1616–1625.
    • (2011) Genome Res , vol.21 , pp. 1616-1625
    • Minot, S.1    Sinha, R.2    Chen, J.3
  • 39
    • 84880509968 scopus 로고    scopus 로고
    • Antibiotic treatment expands the resistance reservoir and ecological network of the phage metagenome
    • 39 Modi, S.R., Lee, H.H., Spina, C.S., et al. Antibiotic treatment expands the resistance reservoir and ecological network of the phage metagenome. Nature 499 (2013), 219–222.
    • (2013) Nature , vol.499 , pp. 219-222
    • Modi, S.R.1    Lee, H.H.2    Spina, C.S.3
  • 41
    • 84863227435 scopus 로고    scopus 로고
    • A tool kit for quantifying eukaryotic rRNA gene sequences from human microbiome samples
    • 41 Dollive, S., Peterfreund, G.L., Sherrill-Mix, S., et al. A tool kit for quantifying eukaryotic rRNA gene sequences from human microbiome samples. Genome Biol, 13, 2012, R60.
    • (2012) Genome Biol , vol.13 , pp. R60
    • Dollive, S.1    Peterfreund, G.L.2    Sherrill-Mix, S.3
  • 42
    • 84879148662 scopus 로고    scopus 로고
    • Archaea and fungi of the human gut microbiome: correlations with diet and bacterial residents
    • 42 Hoffmann, C., Dollive, S., Grunberg, S., et al. Archaea and fungi of the human gut microbiome: correlations with diet and bacterial residents. PLoS One, 8, 2013, e66019.
    • (2013) PLoS One , vol.8 , pp. e66019
    • Hoffmann, C.1    Dollive, S.2    Grunberg, S.3
  • 43
    • 46349085971 scopus 로고    scopus 로고
    • Fungi and inflammatory bowel diseases: alterations of composition and diversity
    • 43 Ott, S.J., Kuhbacher, T., Musfeldt, M., et al. Fungi and inflammatory bowel diseases: alterations of composition and diversity. Scand J Gastroenterol 43 (2008), 831–841.
    • (2008) Scand J Gastroenterol , vol.43 , pp. 831-841
    • Ott, S.J.1    Kuhbacher, T.2    Musfeldt, M.3
  • 44
    • 84931469899 scopus 로고    scopus 로고
    • Fecal microbiota transplantation induces remission in patients with active ulcerative colitis in a randomized controlled trial
    • 44 Moayyedi, P., Surette, M.G., Kim, P.T., et al. Fecal microbiota transplantation induces remission in patients with active ulcerative colitis in a randomized controlled trial. Gastroenterology 149 (2015), 102–109.e6.
    • (2015) Gastroenterology , vol.149 , pp. 102-109.e6
    • Moayyedi, P.1    Surette, M.G.2    Kim, P.T.3
  • 45
    • 84931423571 scopus 로고    scopus 로고
    • findings from a randomized controlled trial of fecal transplantation for patients with ulcerative colitis
    • 45 Rossen, N.G., Fuentes, S., van der Spek, M.J., et al. findings from a randomized controlled trial of fecal transplantation for patients with ulcerative colitis. Gastroenterology 149 (2015), 110–118.e4.
    • (2015) Gastroenterology , vol.149 , pp. 110-118.e4
    • Rossen, N.G.1    Fuentes, S.2    van der Spek, M.J.3
  • 46
    • 84923436937 scopus 로고    scopus 로고
    • Fecal microbial transplant effect on clinical outcomes and fecal microbiome in active Crohn's disease
    • 46 Suskind, D.L., Brittnacher, M.J., Wahbeh, G., et al. Fecal microbial transplant effect on clinical outcomes and fecal microbiome in active Crohn's disease. Inflamm Bowel Dis 21 (2015), 556–563.
    • (2015) Inflamm Bowel Dis , vol.21 , pp. 556-563
    • Suskind, D.L.1    Brittnacher, M.J.2    Wahbeh, G.3
  • 47
    • 80054736926 scopus 로고    scopus 로고
    • Systematic review of intestinal microbiota transplantation (fecal bacteriotherapy) for recurrent Clostridium difficile infection
    • 47 Gough, E., Shaikh, H., Manges, A.R., Systematic review of intestinal microbiota transplantation (fecal bacteriotherapy) for recurrent Clostridium difficile infection. Clin Infect Dis 53 (2011), 994–1002.
    • (2011) Clin Infect Dis , vol.53 , pp. 994-1002
    • Gough, E.1    Shaikh, H.2    Manges, A.R.3
  • 48
    • 84931295496 scopus 로고    scopus 로고
    • Update on fecal microbiota transplantation 2015: indications, methodologies, mechanisms, and outlook
    • 48 Kelly, C.R., Kahn, S., Kashyap, P., et al. Update on fecal microbiota transplantation 2015: indications, methodologies, mechanisms, and outlook. Gastroenterology 149 (2015), 223–237.
    • (2015) Gastroenterology , vol.149 , pp. 223-237
    • Kelly, C.R.1    Kahn, S.2    Kashyap, P.3
  • 49
    • 84966293687 scopus 로고    scopus 로고
    • Donor species richness determines faecal microbiota transplantation success in inflamm bowel disease
    • 49 Vermeire, S., Joossens, M., Verbeke, K., et al. Donor species richness determines faecal microbiota transplantation success in inflamm bowel disease. J Crohns Colitis 10 (2016), 387–394.
    • (2016) J Crohns Colitis , vol.10 , pp. 387-394
    • Vermeire, S.1    Joossens, M.2    Verbeke, K.3
  • 50
    • 84877020842 scopus 로고    scopus 로고
    • Stool substitute transplant therapy for the eradication of Clostridium difficile infection: ‘RePOOPulating’ the gut
    • 50 Petrof, E.O., Gloor, G.B., Vanner, S.J., et al. Stool substitute transplant therapy for the eradication of Clostridium difficile infection: ‘RePOOPulating’ the gut. Microbiome, 1, 2013, 3.
    • (2013) Microbiome , vol.1 , pp. 3
    • Petrof, E.O.1    Gloor, G.B.2    Vanner, S.J.3


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.