ヒスパニック系ニューメキシコ人における眼筋筋縮症
M W Becher1, L Morrison, L E Davis
1Department of Cell Biology and Physiology, University of New Mexico HSC, BMSB 149, 915 Camino de Salud NE, Albuquerque, NM 87131, USA.
JAMA
|December 26, 2001
まとめ
ニューメキシコの耳筋筋縮症 (OPMD) は,ヒスパニック系住民に影響し,プトーシスや不症などの症状を呈しています. OPMDは著しい罹病率を引き起こしますが,平均寿命には影響しません.
科学分野:
- 神経学 神経学とは
- 遺伝学 遺伝学とは
- 公衆衛生は公衆衛生である.
背景:
- オキュロファリンゲス筋縮症 (OPMD) は,PABP2遺伝子におけるポリアラニン反復拡張に関連した希少な遺伝的ミオパシーです.
- この状態は,世界中で孤立した集団に影響を与え,ニューメキシコで顕著な濃度が観察されています.
研究 の 目的:
- ニューメキシコのOPMD患者の臨床的,遺伝的,人口学的特徴を包括的に特徴づけること.
- このユニークなコホート内のOPMDの有病率と特定の症状を理解するために.
主な方法:
- 1965年から2001年の医療記録を分析した遡及的なコホート研究.
- 10人の患者の遺伝子確認と49人の患者の詳細な臨床評価が含まれています.
- ニューメキシコ大学病院とニューメキシコVAヘルスケアシステムからのデータです.
主要な成果:
- 39の親族で216人のOPMD症例を特定し,最大4世代をカバーし,主にニューメキシコ北部のヒスパニック系出身です.
- 発症時にプトーシスとディスファギアが同様の形で現れ,その後は四肢の弱さと歩行の問題が続いた.
- 同様のPABP2遺伝子のポリアラニンリピート拡張 ([GCG](9) は,異なる親族の10人の個体で見つかりました.
結論:
- ニューメキシコのOPMDコホートは,古典的な臨床的および遺伝的特徴を示しており,長寿には影響がなく,有意な罹病率を示しています.
- PABP2変異の起源は不明であり,おそらくニューメキシコ北部の地理的および遺伝的孤立の影響を受けている.
- この研究は,ニューメキシコで以前は認識されていなかった重要な健康問題としてOPMDを強調し,特に南西部のヒスパニック系住民に対して,臨床医の意識を高めるよう促しています.
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