Expression of N-Myc downstream-regulated gene–2 (NDRG2) and nuclear transcription factor κB (NF-κB) and secretion of proinflammatory cytokines in cultured primary astrocytes exposed to oxygen-glucose deprivation and reoxygenation (OGD/R). NDRG2 and NF-κB protein expression levels (A) and inflammatory cytokine secretion (B) were markedly increased after OGD/R. The data are expressed as the mean ± SD (n = 6). *P < 0.05, **P < 0.01, and ***P < 0.001 versus the control (Con) group.