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Assay for Blood-brain Barrier Integrity in Drosophila melanogaster
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N-acetylcysteine Amide Ameliorates Blast-Induced Changes in Blood-Brain Barrier Integrity in Rats
Usmah Kawoos1,2, Rania Abutarboush1,2, Sydney Zarriello3
1The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc., Bethesda, MD, United States.
Frontiers in Neurology
|July 13, 2019
Summary
Blast overpressure (BOP) exposure damages the blood-brain barrier (BBB). Post-blast treatment with N-acetylcysteine amide (NACA) significantly protected against this blast-induced BBB breakdown in rats.
Area of Science:
- Neuroscience
- Trauma Research
- Pharmacology
Background:
- Traumatic brain injury from blast overpressure (BOP) is linked to neuropathology, including blood-brain barrier (BBB) dysfunction.
- Understanding BBB integrity following BOP exposure is crucial for developing effective treatments.
Purpose of the Study:
- To investigate the effects of repeated BOP exposure on BBB integrity.
- To evaluate the protective potential of N-acetylcysteine amide (NACA) against blast-induced BBB damage.
Main Methods:
- Rats were exposed to three BOPs (110 kPa) with 0.5-hour intervals.
- BBB integrity was assessed in vivo using intravital microscopy and TRITC-Dextran leakage into the brain parenchyma.
- NACA treatment was administered 2 hours after the initial BOP exposure.
Main Results:
- BOP exposure significantly increased TRITC-Dextran leakage, indicating BBB compromise.
- NACA treatment markedly reduced TRITC-Dextran leakage in BOP-exposed rats.
- Sham-treated animals receiving NACA showed minimal leakage, suggesting a protective effect.
Conclusions:
- Repeated BOP exposure compromises BBB integrity.
- N-acetylcysteine amide (NACA) demonstrates significant protective effects against blast-induced BBB breakdown.
- NACA is a potential therapeutic agent for mitigating blast-related brain injury.
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