LCN2 mAb attenuated the induction of chemokines and cytokines after tMCAo. We analyzed total RNA isolated from ipsilateral hemispheres of naive LCN2+/+ and LCN2−/− mice (+/+ con and −/− con), as well as at 23 h after tMCAo (+/+ tMCAo and −/− tMCAo), and LCN2+/+ mice treated with LCN2 mAb at 4 h after tMCAo (+/+ tMCAo LCN2 mAb) using real-time RT-PCR (n = 6 per group). We compared differences in the relative mRNA expression of iNOS (A), IL-6 (B), CCL2 (C), and CCL9 (D) between the five groups using a one-way ANOVA and Newman–Keuls post hoc tests. The relative brain mRNA levels of iNOS, IL-6, CCL2, and CCL9 after tMCAo were significantly increased as compared with those in naive LCN2+/+ mice. Additionally, the mRNA levels of iNOS, IL-6, CCL2, and CCL9 in LCN2−/− mice or mice treated with LCN2 mAb were significantly reduced as compared with those in LCN2+/+ mice after tMCAo (*** p < 0.001, ** p < 0.01, * p < 0.05).