臨床的特徴
Genna M Mashinchi1, Taylor F Levine2, Emily Post2
1Cleveland Clinic, Las Vegas, NV, USA.
Alzheimer's & dementia : the journal of the Alzheimer's Association
|December 25, 2025
まとめ
Trail Making Test B (TMTB) は、ヒスパニック系ラテン系および非ヒスパニック系白人の機能低下を最もよく予測する。TMTB
科学分野:
- 神経科学; 老年医学; 認知心理学
背景:
- アルツハイマー病および関連認知症(ADRD)は進行性であり、機能的自立に影響を与えます。神経心理学的評価はリソースが限られているため、早期検出ツールの感度が必要です。女性およびヒスパニック系ラテン系(HL)は、男性および非ヒスパニック系白人(NHW)と比較してADRDのリスクが高くなります。
研究 の 目的:
- 神経心理学的指標を用いた機能低下予測における民族および性差を検討すること。多様な高齢者集団における早期機能低下に敏感な認知テストを特定すること。
主な方法:
- 階層的線形モデルを用いて、1,292人の認知的に正常または軽度の障害のある参加者(NHWおよびHL)のデータを分析しました。ベースラインの神経心理学的検査には、Trail Making Test B(TMTB)、動物流暢性、言語学習の想起が含まれていました。機能低下は、18〜24ヶ月にわたるCDR-Sum of Boxes(CDR-SB)で測定されました。
主要な成果:
- NHWでは、TMTB、動物流暢性、言語学習が機能低下を予測し、性別がTMTBの効果を調整しました。HLでは、TMTBのみが機能低下を予測し、性別がその関係を大きく調整しました。TMTBはNHW男性およびHL男性でより大きな機能低下を予測しましたが、HL女性はTMTBの成績に関わらず機能を維持していました。
結論:
- TMTBはNHWおよびHLにおける機能低下を効果的に予測し、男性でより強い関連性を示しました。本研究の結果は、多様な高齢者グループにおける機能低下スクリーニングのためのTMTBの臨床的有用性を強調しています。性別による予測の違いは、女性における性別特異的な認知評価の必要性を示唆しています。
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