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筋肉量2倍の赤ちゃん

筋肉2倍の幼児、3キロのダンベルも軽々 ドイツ [asahi.com]

この男児は元陸上選手の母親から生まれ、ドイツに住むというほかに詳細は明らかにされていない。AP通信によると、5歳近くになり、3キロのダンベルを軽々と持ち上げるという。
男児の遺伝子を詳しく解析したところ、筋肉の増大を抑えるたんぱく質ミオスタチンに関係する遺伝子の突然変異があった。父母の双方から変異を受け継いだらしい。
97年にミオスタチンを無くしたマウスでは筋肉量が2倍になることが報告されています。 人間でもマウスと同じようにミオスタチンが筋肉量の調節を行っていることが示唆された発見です。
遺伝学的な事実は、まあそれで良いんですが、この子はこのままちゃんと成長出来るんでしょうか? それが心配です。 マウスの例ではどうだったのかな。 またこの子が将来オリンピックに出場する場合など、ドーピングには引っかからないですよね。 いろいろと問題が出てきそうだけど、差別の内容に普通に生活出来ると良いなあ。 言い換えれば生まれ持った資質なんですから大切に育てて欲しいですね。

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