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Monitoring Neuronal Survival via Longitudinal Fluorescence Microscopy
Published on: January 19, 2019
Detecting necrotic neurons with fluoro-jade stain
G J Krinke1, W Classen, N Vidotto
1Syngenta Human and Environmental Safety, Stein, Switzerland. georg.krinke@syngenta.com
Summary
Fluoro-jade effectively detects necrotic neurons in toxic neuropathy models. This novel fluorescence microscopy stain is reliable for toxicological safety studies, even after short autolysis periods.
Area of Science:
- Neuroscience
- Toxicology
- Histology
Background:
- Neuropathic lesions are challenging to detect.
- Novel staining methods are needed for toxicological safety studies.
Purpose of the Study:
- To validate Fluoro-jade as a stain for detecting neuropathic lesions.
- To assess Fluoro-jade's sensitivity and specificity in toxic neuropathy models.
Main Methods:
- Rats were induced with toxic neuropathy using 3-acetylpyridine (3-AP) or acrylamide (ACR).
- Behavioral observations and neurological assessments were performed.
- Fluoro-jade staining was applied to nervous system sections, with and without autolysis.
Main Results:
- Fluoro-jade selectively detected necrotic neurons in the brain (3-AP model) and cerebellum (ACR model).
- The stain was effective after 4-hour autolysis but not after 16-hour autolysis.
- Reversible neuronal remodeling (chromatolysis) was not detected by Fluoro-jade.
Conclusions:
- Fluoro-jade is a valid and sensitive stain for detecting necrotic neurons in toxicological studies.
- The stain's utility is confirmed in models of toxic neuropathy.
- Autolysis duration is critical for accurate Fluoro-jade staining results.
