What question did this study set out to answer?

The aim is to develop a dual-mode probe for detecting hydrogen peroxide in the context of Alzheimer's disease.

A Turn-On Fluorescent and Ratiometric Electrochemical Dual-Mode Probe for Hydrogen Peroxide Detection in Brain Microdialysates of Alzheimer’s Disease Mice

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A dual-mode probe shows selective detection of hydrogen peroxide in AD mice, implying its potential for monitoring oxidative stress.

The aim is to develop a dual-mode probe for detecting hydrogen peroxide in the context of Alzheimer's disease.
Constructed a dual-mode probe using resorufin for fluorescence and pentafluorobenzenesulfonyl as the H2O2-responsive unit.
Utilized a carbon fiber microelectrode modified with carbon nanotubes for electrochemical detection.
Performed in vivo microdialysis analysis on brain microdialysates from AD model mice.
Achieved a fluorescence detection limit of 50 nM.
Electrochemical detection range was 1.0-50 μM for hydrogen peroxide.
Detected significantly higher H2O2 levels in AD mice (28.6 μM) compared to wild-type mice (10.3 μM).

Dong et al. (2025) studied this question.

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