クローン病の遺伝的予測に関する予備的な証拠
J M Polito1, R C Rees, B Childs
1Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA.
Lancet (London, England)
|March 23, 1996
まとめ
遺伝的予測は,次の世代で早期に発症することが特徴であり,クローン病では発生しているようです. この研究では,より早い診断と,より若い家族の病気の重度の増加が認められ,この現象の遺伝的根拠を示唆しています.
科学分野:
- 遺伝学 遺伝学とは
- 胃腸内科 胃腸内科
- ヒューマン・バイオロジー ヒューマン・バイオロジー
背景:
- 遺伝的予期は,病気の早期発症または世代を超えて重度の増加を記述します.
- この現象は,いくつかの神経学的疾患において,拡張されたトリヌクレオチドの繰り返しに関連している.
- クローン病 (CD) には遺伝的影響がありますが,これらは完全に理解されていません.
研究 の 目的:
- クローン病における遺伝的予測の証拠を調査する.
- 家族内の疾患発症と重症度の世代間の違いを分析する.
主な方法:
- ジョンズ・ホプキンス病院で552人のクローン病患者を遡及的にレビューした.
- ジョンズ・ホプキンス大学から27人の2世代,一級親族のペアを特定しました.
- マルチセンター調査から追加32組のペアの研究.
- tテストと一般化された推定方程式の限界回帰モデルを用いた分析.
主要な成果:
- 罹患したカップルの若い世代は,診断時により早い年齢を示した (例えば,ジョンズ・ホプキンスコホートでは18.9歳対31.4歳).
- リグレッションモデルでは,親と子供の診断時の年齢 (10.8~15.1歳) の有意な違いが確認されました.
- 証拠は,さらなる世代間の違いと,特に父親からの伝染で,子孫における疾患の拡大を示唆した.
結論:
- 研究結果は,クローン病では遺伝的予期が起きることを示唆しています.
- 早期の診断と,より若い親戚の病気の拡大が,これを裏付けている.
- 父親からの感染は,クローン病の予期と関連しています.
- 三重重複の領域に関するさらなる研究が推奨されています.
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