Does the Apparent Diffusion Coefficient Value Predict Permanent Cerebral Ischemia/Reperfusion Injury in Rats?

Area of Science:

• Neuroscience
• Radiology
• Pathology

Background:

• Cerebral ischemia/reperfusion (I/R) injury variability complicates stroke research.
• Early prediction of I/R injury is crucial for accurate stroke evaluation.
• Apparent diffusion coefficient (ADC) is a potential early marker for I/R injury.

Purpose of the Study:

• To investigate if acute-phase ADC measurements can predict permanent cerebral I/R injury.
• To establish the correlation between early ADC values and long-term I/R damage.

Main Methods:

• Middle cerebral artery occlusion model in rats (60 minutes ischemia/reperfusion).
• Acquisition of T2-weighted and diffusion-weighted images at 30 minutes and 24 hours post-ischemia.
• Assessment of neuronal survival using NeuN immunofluorescence staining.
• Correlation analysis between relative ADC (rADC) values and histological outcomes.

Main Results:

• Strong correlation between 30-minute rADC values and 24-hour I/R injury in the ischemic core and peri-infarct regions.
• Moderate correlation in the anterior choroidal and hypothalamic regions.
• Strong positive correlation between summed 30-minute rADC values and 24-hour infarct volume.

Conclusions:

• Acute-phase ADC measurement effectively predicts permanent cerebral I/R injury.
• ADC is a valuable tool for evaluating ischemic stroke severity.
• Early ADC assessment can reduce uncertainty in stroke research.