Changes in blood-brain barrier permeability and expression of related factors in a rat model of intracerebral hemorrhage following minocycline treatment

Inflammatory factor aggregation and blood-brain barrier (BBB) damage occur around hematoma foci following intracerebral hemorrhage. Minocycline is lipophilic, can pass through the BBB, and shows anti-inflammatory effects in models of central nervous system disease. We found that minocycline application at 6 hours after intracerebral hemorrhage reduced BBB permeability, decreased vascular endothelial growth factor expression, and increased nerve growth factor and heat shock protein 70 expression, primarily in neurons and microglia. Early intraperitoneal injection of minocycline attenuated BBB damage possibly by reducing vascular endothelial growth factor expression and enhancing nerve growth factor and heat shock protein 70 expression.