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2010 Fiscal Year Annual Research Report

動脈硬化プラーク脆弱化の分子機構の解明と急性冠症候群予測因子の同定

Research Project

Project/Area Number 22390159
Research InstitutionThe University of Tokushima

Principal Investigator

佐田 政隆  徳島大学, 大学院・ヘルスバイオサイエンス研究部, 教授 (80345214)

Co-Investigator(Kenkyū-buntansha) 平田 恭信  東京大学, 医学部附属病院, 特任准教授 (70167609)
添木 武  徳島大学, 大学院・ヘルスバイオサイエンス研究部, 講師 (60393211)
黒部 裕嗣  徳島大学, 大学院・ヘルスバイオサイエンス研究部, 助教 (30380083)
Keywords動脈硬化 / 急性冠症候群 / プラーク / 自然免疫 / マクロファージ / サイトカイン / 慢性炎症 / 生活習慣病
Research Abstract

動脈硬化の進展と破綻における心臓周囲脂肪細胞の役割を調べるために、冠動脈バイパス手術を行う患者(CAD群:38例)、および弁形成術を施行する患者(Non-CAD群:40例)において心臓周囲脂肪および皮下脂肪を採取した。mRNAを抽出し、定量的RT-PCRにてサイトカイン発現を調べた。CAD群の心臓周囲脂肪においては、Non-CAD群に比べて、IL-6,TNFαといった炎症性サイトカインの発現が亢進していた。組織学的検討では、CAD群ではnon-CAD群に比較して、T細胞、マクロファージの浸潤が亢進していた。また、脂肪組織中に浸潤したマクロファージのサブタイプを免疫染色で調べたところ、炎症性サイトカインの発現とマクロファージの極性(M1/M2 ratio)は正の相関関係を示した。一方で、M1/M2 ratioと抗炎症性サイトカイン(IL-10,AMAC-1)との間には、負の相関が認められた。また、M1/M2 ratioはGensini scoreと良い相関を示した。さらに、冠動脈疾患患者における心臓周囲脂肪組織における炎症反応は、病原体センサーである、TLR1,TLR2,TLR5,MyD88の発現が亢進していた。また、急性冠症候群患者の末梢血においては、病原体センセーのリガンドであるHMGB-1の濃度が上昇していた。冠動脈における動脈硬化病変の形成には、冠動脈周囲の脂肪組織における炎症性マクロファージの浸潤と、炎症性サイトカインの発現亢進が影響を及ぼしている可能性が示唆された。

  • Research Products

    (25 results)

All 2010 Other

All Journal Article (21 results) (of which Peer Reviewed: 21 results) Presentation (3 results) Remarks (1 results)

  • [Journal Article] Long-term patency of small-diameter vascular graft made from fibroin, a silk-based biodegradable material.2010

    • Author(s)
      S.Enomoto, et al.
    • Journal Title

      J Vasc Surg.

      Volume: 51 Pages: 155-164

    • Peer Reviewed
  • [Journal Article] When EPC says : I2 shall limit neointima formation!2010

    • Author(s)
      J.Sainz, et al.
    • Journal Title

      Arterioscler.Thromb.Vasc.Biol.

      Volume: 30 Pages: 457-458

    • Peer Reviewed
  • [Journal Article] Crucial role of renin-angiotensin system in the pathogenesis of atheroscle rosis.2010

    • Author(s)
      M.Sata, et al.
    • Journal Title

      J Med Invest.

      Volume: 57 Pages: 12-25

    • Peer Reviewed
  • [Journal Article] Ezetimibe ameliorates metabolic disorder and microalbuminuria in patients with hypercholesterolemia.2010

    • Author(s)
      S.Yagi, et al.
    • Journal Title

      J Atheroscler Thromb.

      Volume: 17 Pages: 173-180

    • Peer Reviewed
  • [Journal Article] Is PIGF a plaque growth factor?2010

    • Author(s)
      J.Sainz, et al.
    • Journal Title

      Cardiovasc Research.

      Volume: 86 Pages: 4-5

    • Peer Reviewed
  • [Journal Article] Intake of red wine increases the number and functional capacity of circulating endothelial progenitor cells by_ enhancing nitric oxide bioavailability.2010

    • Author(s)
      PH.Huang, et al.
    • Journal Title

      Arterioscler Thromb Vasc Biol.

      Volume: 30 Pages: 869-877

    • Peer Reviewed
  • [Journal Article] eNOS-independent protective action of statin against angiotensin II-induced atrial remodeling via reduced oxidant injury.2010

    • Author(s)
      S.Yagi, et al.
    • Journal Title

      Hypertension.

      Volume: 55 Pages: 918-923

    • Peer Reviewed
  • [Journal Article] Impact of primitive cells in intracoronary thrombi on lesion prognosis : Temporal analysis of cellular constituents of thrombotic material obtained from patients with acute coronary syndrome.2010

    • Author(s)
      H.Iwata, et al.
    • Journal Title

      Heart.

      Volume: 96 Pages: 748-755

    • Peer Reviewed
  • [Journal Article] Congenital ventricular aneurysm manifesting as monofocal premature vent ricular contractions.2010

    • Author(s)
      S.Yagi, et al.
    • Journal Title

      Intern Med.

      Volume: 49 Pages: 907-912

    • Peer Reviewed
  • [Journal Article] Effects of additional administration of low-dose indapamide on patients with hypertension treated with angiotensin II receptor blocker.2010

    • Author(s)
      H.Yamada, et al.
    • Journal Title

      J Cardiovasc Pharmacol Ther.

      Volume: 15 Pages: 145-150

    • Peer Reviewed
  • [Journal Article] A phoshodiesterase-5 inhibitor vardenafil enhances angiogenesis through a protein kinase G-dependent hypoxia-ipducible factor-1/vascular endothelial growth factor pathway.2010

    • Author(s)
      M.Sahara, et al.
    • Journal Title

      Arterioscler Thromb Vasc Bio

      Volume: 30 Pages: 1315-1324

    • Peer Reviewed
  • [Journal Article] Cardiac magnetic resonance imaging and 2-dimensional speckle tracking echocardiography in secondary cardiac amyloidosis.2010

    • Author(s)
      K.Kusunose, et al.
    • Journal Title

      Circ J.

      Volume: 74 Pages: 1494-1496

    • Peer Reviewed
  • [Journal Article] Endovascular injury induces rapid phenotypic changes in perivascular adipose tissue.2010

    • Author(s)
      M.Takaoka, et al.
    • Journal Title

      Arterioscler Thromb Vasc Biol.

      Volume: 30 Pages: 1576-1582

    • Peer Reviewed
  • [Journal Article] Heparin cofactor II protects against angiotensin II-induced cardiac remodeling via attenuation of oxidative stress in mice.2010

    • Author(s)
      Y.Sumitomo-Ueda, et al.
    • Journal Title

      Hypertension.

      Volume: 56 Pages: 430-436

    • Peer Reviewed
  • [Journal Article] Dehydroepiandrosterone sulfate is inversely associated with sex-dependent diverse carotid atherosclerosis regardless of endothelial function.2010

    • Author(s)
      S.Yoshida, et al.
    • Journal Title

      Atherosclerosis.

      Volume: 212 Pages: 310-315

    • Peer Reviewed
  • [Journal Article] Diagnostic utility of cardiac magnetic resonance for detection of cardiac involvement in female carriers of Duchenne muscular dystrophy.2010

    • Author(s)
      T.Iwase, et al.
    • Journal Title

      Heart Asia.

      Volume: 2 Pages: 52-55

    • Peer Reviewed
  • [Journal Article] The ATP-binding cassette transporter BCRP1/ABCG2 plays a pivotal role in cardiac repair after myocardial infarction via modulation of microvascular endothelial cell survival and function.2010

    • Author(s)
      Y.Higashikuni, et al.
    • Journal Title

      Arterioscler.Thromb.Vasc.Biol.

      Volume: 30 Pages: 2128-2135

    • Peer Reviewed
  • [Journal Article] Bone marrow-derived cells contribute to vascular inflammation but do not differentiate into smooth muscle cell lineages.2010

    • Author(s)
      H.Iwata, et al.
    • Journal Title

      Circulation.

      Volume: 122 Pages: 2048-2057

    • Peer Reviewed
  • [Journal Article] Moderate intake of red wine improves ischemia-induced neovascularization in diabetic mice-Roles of endothelial progenitor cells and nitric oxide.2010

    • Author(s)
      PH.Huang, et al.
    • Journal Title

      Atherosclerosis.

      Volume: 212 Pages: 426-435

    • Peer Reviewed
  • [Journal Article] Bosentan ameliorated exercise-induced pulmonary arterial hypertension complicated with systemic sclerosis.2010

    • Author(s)
      S.Yagi, et al.
    • Journal Title

      Intern Med.

      Volume: 49 Pages: 2309-2312

    • Peer Reviewed
  • [Journal Article] The angiotensin receptor blocker, telmisartan, reduces and stabilizes atherosclerosis in ApoE and AT1aR double deficient mice.2010

    • Author(s)
      D.Fukuda, et al.
    • Journal Title

      Biomed Pharmacother.

      Volume: 64 Pages: 712-717

    • Peer Reviewed
  • [Presentation] Atherosclerosis, Angiogenesis and Sex hormones2010

    • Author(s)
      佐田政隆
    • Organizer
      第18回日本血管生物医学会学術集会
    • Place of Presentation
      大阪
    • Year and Date
      20101201-20101203
  • [Presentation] Vascular injury and repair : beyond the endothelium.2010

    • Author(s)
      M.Sata
    • Organizer
      ESC CONGRESS 2010
    • Place of Presentation
      Stockholm, Sweden
    • Year and Date
      20100828-20100901
  • [Presentation] Orally administered eicosapentaenoic acid reduces and stabilizes atherosclerotic lesions2010

    • Author(s)
      M.Sata
    • Organizer
      第42回日本動脈硬化学会総会・学術集会
    • Place of Presentation
      岐阜
    • Year and Date
      2010-07-16
  • [Remarks]

    • URL

      http://square.umin.ac.jp/TOKUSHIM/index.htm

URL: 

Published: 2012-07-19  

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