Type 2 & other diabetes

Early detection of type 2 diabetes mellitus‐associated cognitive dysfunction: The potential of amide proton transfer‐weighted imaging

Diabetes Obes MetabPublished Diagnostic accuracy study

Authors' conclusion

APTw imaging suggested a spatially evolving pattern of hippocampal damage in T2DM, where the left body may show early alterations, with the left head potentially becoming more implicated upon MCI onset. These findings provide preliminary evidence supporting the potential of APTw as an early, non-invasive biomarker for tracking neuropathological progression in DACD.

Study context

Population
T2DM patients with and without MCI and community-based controls without MCI27 T2DM patients
Participants
19 / 8 / 11
Comparison
T2DM-MCI vs T2DM-nMCI vs CG-nMCI
  • T2DM-MCIn = 19
  • T2DM-nMCIn = 8
  • CG-nMCIn = 11reference
Outcome
Diagnostic performance of hippocampal APTw SI

Performance

As reported in the abstract

Test or modelAUC (left hippocampal body)AUC (left hippocampal head)
T2DM-nMCI0.793— not stated in the abstract
T2DM-MCI— not stated in the abstract0.732

AUC (left hippocampal body)

T2DM-nMCI0.793
T2DM-MCI— not stated in the abstract

AUC (left hippocampal head)

T2DM-nMCI— not stated in the abstract
T2DM-MCI0.732

— not stated in the abstract

Left hippocampal body AUC for T2DM-nMCI
P = 0.045
Left hippocampal head AUC for T2DM-MCI
P = 0.034

Further findings

Correlation of left hippocampal head amide proton transfer-weighted (APTw) signal intensity (SI) with cognitive scores in T2DM-nMCI

Semantic verbal fluency (SVF): positive correlation (r, R2, P)
r = 0.770, R2 = 0.593, p = 0.025
Wechsler Memory Scale-Digit Span Test-Backward: negative correlation (r, R2, P)
r = −0.802, R2 = 0.643, p = 0.017

Correlation of left hippocampal APTw SI with cognitive scores in T2DM-MCI

Left head vs SVF: positive correlation (r, R2, P)
r = 0.414, R2 = 0.172, p = 0.044
Left tail vs Trail-Making Test-A: negative association (r, R2)
r = −0.333, R2 = 0.111
Left tail vs Auditory Verbal Learning Test-Huashan version-delayed recall: negative association (r, R2)
r = −0.376, R2 = 0.141
Both left tail associations
P ≤ 0.021

Original publication

Early detection of type 2 diabetes mellitus‐associated cognitive dysfunction: The potential of amide proton transfer‐weighted imaging. Diabetes Obes Metab. Published 2 February 2026. doi:10.1111/dom.70468

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