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2009 Fiscal Year Annual Research Report

シトリン欠損症の分子遺伝学と多彩な病態発症に関わる遺伝要因と環境要因の探索

Research Project

Project/Area Number 19390096
Research InstitutionKagoshima University

Principal Investigator

小林 圭子  Kagoshima University, 大学院・医歯学総合研究科, 准教授 (70108869)

Co-Investigator(Kenkyū-buntansha) 飯島 幹雄  鹿児島大学, 大学院・歯学総合研究科, 助教 (00305111)
佐伯 武頼  徳島文理大学, 健康科学研究所, 教授 (10056070)
中河 志朗  鹿児島大学, 大学院・歯学総合研究科, 教授 (70073666)
Keywordscitrin / SLC25A13 / 成人発症II型シトルリン血症(CTLN2) / 胆汁うっ滞性新生児肝炎(NICCD) / aspartate-glutamate carrier / NADH shuttle / malate-aspartate shuttle / glycerophosphate shuttle
Research Abstract

本研究の目的は、多彩な病態像を示すcitrin欠損症を分子遺伝学的に診断し、CTLN2と肝癌に焦点をあてた病態発症の分子機構と要因を明らかにし、治療・予防法の開発に応用することである。本年度の研究成果を以下に列挙する。
(1) Citrin欠損症の診断:これまでに、57種のSLC25A13変異・塩基変化を同定し、国内外の多数のcitrin欠損症(日本人442例、中国人99例、韓国人16例、ベトナム人23例、マレーシア人8例、タイ人2例、白人・ユダヤ人・パキスタン人・イスラエル人など14例)を分子遺伝学的に診断した。
(2) SLC25A13変異頻度検索:東南アジア人症例では共通して変異851del4が高頻度に存在した。さらに興味あることに、日本人症例で見いだしたretrotransposal insertion(IVS16ins3kb)変異が、中国・韓国・マレーシア人症例でも比較的高頻度に検出された。
(3) 病態像の把握と病態発症に関わる環境要因の検討:大部分のNICCD症例では、生後6ヶ月までに異常検査値は正常化するが、2%(5例/255例)のNICCD症例では、生後10ヶ月前後で肝移植手術を受けるほど重篤な症状を呈した。しかし、重症化の要因は明らかでなく、今後の課題である。
(4) Citrin欠損による肝癌発症機構の解析:4種のマウス(wild-type、citrin-KO、mGPDH-KO、double : citrin/mGPDH-KO)に鉄過剰食を与えて約10ヶ月間経過観察したところ、3群のマウスの体重は35g前後であったのに対して、double-KOマウスでは10gと体重増加が見られなかった。しかし、4群のマウス間で血中TG、ALP、AST、ALTレベルなどに大きな違いはなく、citrin欠損において鉄負荷で肝癌発症に至るという結果は得られず、さらなる解析を必要とした。

  • Research Products

    (39 results)

All 2010 2009

All Journal Article (15 results) (of which Peer Reviewed: 14 results) Presentation (24 results)

  • [Journal Article] Histological findings in the livers of patients with neonatal intrahepatic cholestasis caused by citrin deficiency2010

    • Author(s)
      Akihiko Kimura, et al.
    • Journal Title

      Hepatol Res 40

      Pages: 295-303

    • Peer Reviewed
  • [Journal Article] Neonatal intrahepatic cholestasis caused by citrin deficiency in two Malaysian siblings : outcome at one year of life2010

    • Author(s)
      Thong MK, et al.
    • Journal Title

      Singapore Med J 51

      Pages: e12-e14

    • Peer Reviewed
  • [Journal Article] Conventional diet therapy for hyperammonemia is risky in the treatment of hepatic encephalopathy associated with citrin deficiency2010

    • Author(s)
      Kazuhiro Fukushima, et al
    • Journal Title

      Inter Med 49

      Pages: 243-247

    • Peer Reviewed
  • [Journal Article] Citrin deficiency and current treatment concepts2010

    • Author(s)
      佐伯武頼.
    • Journal Title

      Mot Genet Metab 100

      Pages: S59-S64

    • Peer Reviewed
  • [Journal Article] 尿素回路障害2:citrin 欠損症(NICCD, CTLN2)2010

    • Author(s)
      小林圭子, 佐伯武頼.
    • Journal Title

      小児科診療 73(in press)

  • [Journal Article] Neonatal intrahepatic cholestasis caused by citrin deficiency(NICCD)in three Malay children2010

    • Author(s)
      Lock Hock Ngu, et al.
    • Journal Title

      Malaysian J Pathol (in press)

    • Peer Reviewed
  • [Journal Article] Liver transplantation for an infant with neonatal intrahepatic cholestasis caused by citrin deficiency using heterozygote living donor2009

    • Author(s)
      Takanobu Shigeta, et al.
    • Journal Title

      Pediatr Transplant online

    • Peer Reviewed
  • [Journal Article] Failure to thrive and dyslipidemia caused by citrin deficiency : a novel clinical phenotype2009

    • Author(s)
      Yuan-Zong Song, et al.
    • Journal Title

      Chin J Contemp Pediatr 11

      Pages: 328-332

    • Peer Reviewed
  • [Journal Article] Sustaining hypercitrullinemia, hypercholesterolemia and augmented oxidative stress in Japanese children with aspartate/glutamate carrier isoform 2-citrin-deficiency even during the silent period2009

    • Author(s)
      Hironori Nagasaka, et al.
    • Journal Title

      Mol Genet Metab 97

      Pages: 21-26

    • Peer Reviewed
  • [Journal Article] A case of adult onset type II citrullinemia with portal-systemic shunt2009

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

      J Neurol Sci 281

      Pages: 127-129

    • Peer Reviewed
  • [Journal Article] Neonatal intrahepatic cholestasis caused by citrin deficiency(NICCD)as a cause of liver disease in infants in the UK2009

    • Author(s)
      Tim Hutchin, et al.
    • Journal Title

      J Inherit Metab Dis online

    • Peer Reviewed
  • [Journal Article] Citrin deficiency is an important etiology for cholestatic liver disease in children2009

    • Author(s)
      Yuan-Zong Song, et al.
    • Journal Title

      Chin J Pediatr 47

      Pages: 624-627

    • Peer Reviewed
  • [Journal Article] 非けいれん性てんかん重積状態をくりかえした成人発症II型シトルリン血症の1例2009

    • Author(s)
      舟邉さやか, et al.
    • Journal Title

      臨床神経学 49

      Pages: 571-575

    • Peer Reviewed
  • [Journal Article] Neonatal intrahepatic cholestasis caused by citrin deficiency : Clinical and laboratory investigation of 13 subjects in mainland of China2009

    • Author(s)
      Y-Z Song, et al.
    • Journal Title

      Dig Liver Dis 41

      Pages: 683-689

    • Peer Reviewed
  • [Journal Article] シトリン欠損症原因遺伝子の発見が臨床に与えたインパクト2009

    • Author(s)
      佐伯武頼, 小林圭子
    • Journal Title

      日本遺伝カウンセリング学会誌 30

      Pages: 45-50

    • Peer Reviewed
  • [Presentation] Pathophysiology and therapy of citrin deficiency : consideration from analysis of the model mice2010

    • Author(s)
      佐伯武頼, 小林圭子
    • Organizer
      The 1^<st> Asian Congress for Inherited Metabolic Diseases
    • Place of Presentation
      Fukuoka
    • Year and Date
      20100307-20100310
  • [Presentation] Overview of citrin deficiency : The distribution and frequency of SLC25A13 mutations2010

    • Author(s)
      小林圭子
    • Organizer
      The 1^<st> Asian Congress for Inherited Metabolic Diseases
    • Place of Presentation
      Fukuoka
    • Year and Date
      20100307-20100310
  • [Presentation] Detection of citrin deficiency in children with high risk of prolonged jaundice in Hanoi and Hochiminh City2010

    • Author(s)
      Nguyen Thu Nhan, et al.
    • Organizer
      The 1^<st> Asian Congress for Inherited Metabolic Diseases
    • Place of Presentation
      Fukuoka
    • Year and Date
      20100307-20100310
  • [Presentation] Citrin deficiency in Malaysian children : clinical & laboratory presentation and outcome2010

    • Author(s)
      Meow-Keong Thong, et al.
    • Organizer
      The 1^<st> Asian Congress for Inherited Metabolic Diseases
    • Place of Presentation
      Fukuoka
    • Year and Date
      20100307-20100310
  • [Presentation] Citrin deficiency in mainland of China : The tip of the iceberg2010

    • Author(s)
      Yuan-Zong Song, et al.
    • Organizer
      The 1^<st> Asian Congress for Inherited Metabolic Diseases
    • Place of Presentation
      Fukuoka
    • Year and Date
      20100307-20100310
  • [Presentation] Assessment of nutrient intake in patients with NICCD ; the low-carbohydrate diet may be beneficial for citrin-deficient patients2010

    • Author(s)
      Ohura T, et al.
    • Organizer
      The 1^<st> Asian Congress for Inherited Metabolic Diseases
    • Place of Presentation
      Fukuoka
    • Year and Date
      20100307-20100310
  • [Presentation] Hypercitrullinemia, hypercholesterolemia and augmented oxidative stress in the patients with citrin deficiency during the silent period2010

    • Author(s)
      Yoshiyuki Okano, et al.
    • Organizer
      The 1^<st> Asian Congress for Inherited Metabolic Diseases
    • Place of Presentation
      Fukuoka
    • Year and Date
      20100307-20100310
  • [Presentation] Therapeutic approaches for patients with adult-onset type II citrullinemia(CTLN2)2010

    • Author(s)
      矢崎正英
    • Organizer
      The 1^<st> Asian Congress for Inherited Metabolic Diseases
    • Place of Presentation
      Fukuoka
    • Year and Date
      20100307-20100310
  • [Presentation] Neonatal intrahepatic cholestasis caused by citrin deficiency in Vietnam : Clinical and laboratory feature2010

    • Author(s)
      Nguyen Pham Anh Hoa, et al.
    • Organizer
      The 1^<st> Asian Congress for Inherited Metabolic Diseases
    • Place of Presentation
      Fukuoka
    • Year and Date
      20100307-20100310
  • [Presentation] Utilization of a novel PCR-RFLP procedure in the screening for mutation 851del4 in SLC25A13 gene : eight additional NICCD patients in mainland of China2010

    • Author(s)
      Fang Wen, et al.
    • Organizer
      The 1^<st> Asian Congress for Inherited Metabolic Diseases
    • Place of Presentation
      Fukuoka
    • Year and Date
      20100307-20100310
  • [Presentation] シトリン欠損症モデルマウスは何を嫌い、その強制摂取は肝内に何を起こすか2009

    • Author(s)
      佐伯武頼, et al.
    • Organizer
      第51回日本先天代謝異常学会・第8回アジア先天代謝異常症シンポジウム
    • Place of Presentation
      東京
    • Year and Date
      20091105-20091107
  • [Presentation] Efficacy of therapeutic formulas and the clinical outcomes : Observational study of neonatal intrahepatic cholestasis caused by citrin deficiency2009

    • Author(s)
      Yuan-Zong Song, et al.
    • Organizer
      第51回日本先天代謝異常学会・第8回アジア先天代謝異常症シンポジウム
    • Place of Presentation
      東京
    • Year and Date
      20091105-20091107
  • [Presentation] Hypercitrullinemia, hypercholesterolemia and augmented oxidative stress in the patients with citrin deficiency during the silent period2009

    • Author(s)
      Okano Y, et al.
    • Organizer
      The 11th International Congress on Inborn Errors of Metabolism
    • Place of Presentation
      San Diego, USA
    • Year and Date
      20090829-20090902
  • [Presentation] Citrin deficiency and current treatment concepts2009

    • Author(s)
      佐伯武頼, 小林圭子
    • Organizer
      Satellite Symposium to the 11th International Congress on Inborn Errors of Metabolism : Overcoming Barriers-New Developments and Future Directions for Urea Cycle Disorders
    • Place of Presentation
      La Jolla, USA
    • Year and Date
      20090827-20090829
  • [Presentation] Hypercitrullinemia, hypercholesterolemia and augmented oxidative stress in the patients with citrin deficiency during the silent period2009

    • Author(s)
      Okano Y, et al.
    • Organizer
      Satellite symposium to the 11th International Congress of Inborn Errors of Metabolism : Overcoming Barriers-New Developments and Future Directions for Urea Cycle Disorders
    • Place of Presentation
      La Jolla, USA
    • Year and Date
      20090827-20090829
  • [Presentation] シトリン欠損症原因遺伝子の発見が臨床に与えたインパクト2009

    • Author(s)
      佐伯武頼, 小林圭子
    • Organizer
      第33回日本遺伝カウンセリング学会
    • Place of Presentation
      西宮
    • Year and Date
      20090724-20090726
  • [Presentation] シトリン欠損症の発見:研究は面白い2009

    • Author(s)
      佐伯武頼, 小林圭子
    • Organizer
      第5回日本先天代謝異常学会セミナー
    • Place of Presentation
      千葉幕張
    • Year and Date
      20090718-20090719
  • [Presentation] 成人発症II型シトルリン血症治療の過去、現在、未来2009

    • Author(s)
      佐伯武頼, 小林圭子
    • Organizer
      第27回日本肝移植研究会
    • Place of Presentation
      静岡三島
    • Year and Date
      20090710-20090711
  • [Presentation] 成人型シトルリン血症(CTLN2)患者における内科的治療法:ピルビン酸ナトリウムの有効性2009

    • Author(s)
      福島和広, et al.
    • Organizer
      第27回日本肝移植研究会
    • Place of Presentation
      静岡三島
    • Year and Date
      20090710-20090711
  • [Presentation] 成人型シトルリン血症(CTLN2)患者における食事療法と sodium pyruvate の有効性2009

    • Author(s)
      矢崎正英, et al.
    • Organizer
      第27回日本神経治療学会総会
    • Place of Presentation
      熊本
    • Year and Date
      20090611-20090612
  • [Presentation] 成人型シトルリン血症(CTLN2)患者におけるピルビン酸ナトリウムの有効性2009

    • Author(s)
      矢崎正英, et al.
    • Organizer
      第50回日本神経学会総会
    • Place of Presentation
      仙台
    • Year and Date
      20090520-20090522
  • [Presentation] シトリン欠損症モデルマウス肝臓における病態マーカーの検索2009

    • Author(s)
      佐伯武頼, et al.
    • Organizer
      第56回日本実験動物学会
    • Place of Presentation
      大宮
    • Year and Date
      20090514-20090516
  • [Presentation] シトリン欠損症研究の進歩:発症予防・治療法の開発に向けて2009

    • Author(s)
      大浦敏博, et al.
    • Organizer
      第112回日本小児科学会学術集会
    • Place of Presentation
      奈良
    • Year and Date
      20090417-20090419
  • [Presentation] 無症状期シトリン欠損症の病態について2009

    • Author(s)
      岡野善行, et al.
    • Organizer
      第112回日本小児科学会学術集会
    • Place of Presentation
      奈良
    • Year and Date
      20090417-20090419

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Published: 2011-06-16   Modified: 2016-04-21  

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