統合失調症スペクトラム障害におけるMMP9遺伝子多型とその認知機能障害および自殺企図との関連
Neha Keshri1, Hanumanthappa Nandeesha1, Vikas Menon2
1Dept. of Biochemistry, Jawaharlal Institute of Postgraduate Medical Education and Research, Pondicherry, India.
Indian journal of psychological medicine
|January 22, 2026
まとめ
マトリックスメタロプロテイナーゼ9(MMP9)の遺伝子多型は統合失調症スペクトラム障害に関連している。しかし、これらのMMP9多型は、患者の認知機能障害や自殺企図とは相関しなかった。
科学分野:
- 神経科学
- 遺伝学
- 精神医学
背景:
- 統合失調症スペクトラム障害は、かなりの遺伝的要素を持つ複雑な精神疾患である。
- マトリックスメタロプロテイナーゼ9(MMP9)は、様々な神経プロセスに関与しており、統合失調症の候補遺伝子となっている。
研究 の 目的:
- 特定のMMP9遺伝子多型(rs20544およびrs17576)と統合失調症スペクトラム障害患者の血漿MMP9レベルとの関連を調査すること。
- これらのMMP9遺伝的要因と、対象集団における認知機能および自殺企図との関係を探求すること。
主な方法:
- TaqManアッセイを用いて、216人の統合失調症患者および216人の対照群におけるMMP9多型rs20544およびrs17576の遺伝子型決定を行った。
- 認知状態はAddenbrooke's Cognitive Examination III (ACE-III)を用いて評価した。
- 自殺念慮はColumbia suicide severity rating (CSSR) スコアを用いて評価した。遺伝子型データはカイ二乗検定で、血漿MMP9はKruskal-Wallis検定を用いて比較した。
主要な成果:
- rs17576多型(GG遺伝子型、Gアレル)は統合失調症患者でより頻繁に見られ、一方rs20544(CC遺伝子型、Cアレル)はより頻度が低かった。
- rs20544のTTおよびCT遺伝子型を持つ統合失調症群において、血漿MMP9レベルの上昇が観察された。
- MMP9多型と認知機能障害または自殺企図の重症度との間に関連は見られなかった。
結論:
- 特定のMMP9遺伝子多型は統合失調症スペクトラム障害と関連している。
- MMP9遺伝子変異は、この患者コホートにおける認知機能障害や自殺企図とは関連がないようである。
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