Combination treatment of celecoxib and ciprofloxacin attenuates live S. aureus induced oxidative damage and inflammation in murine microglia via regulation of cytokine balance.

Microglial activation is the most common phenomenon in S. aureus induced brain abscesses as well as other common neurodegenerative diseases. The main objective of this study is to reduce the microglial inflammation with effective bacterial elimination. Ciprofloxacin and celecoxib were used in combination to regulate S. aureus induced oxidative stress and inflammation in primary murine microglial cells. Our results showed that combination treatment effectively killed viable S. aureus and reduced the inflammatory consequences. It can be concluded that lower production of pro-inflammatory cytokines and higher anti-inflammatory IL-10 level may be responsible for microglial polarization switching from pro-inflammatory M1 to anti-inflammatory M2.