Figure 2. Activation of the IL-23/IL-17A/IL-17R pathway following kidney IRI increases kidney expression of proinflammatory cytokines and chemokines that mediate neutrophil recruitment.
(A and B) Blocking CXCR2 attenuated kidney IRI inflammation. (A) Plasma creatinine levels in WT mice that received anti-CXCR2 goat serum or goat serum control 18 hours and 1 hour prior to sham or IRI. n = 4–6; **P < 0.01. (B) Kidney morphology evaluated by H&E staining. Arrowheads indicate tubular injury. Scale bar: 10 μm. (C and D) Kidney mRNA expression level (C) of IL-23/IL-17 downstream cytokines (Tfna and Il6) and neutrophil chemoattractant chemokines (Cxcl1 and Cxcl2) was measured by real-time PCR at different time points following kidney reperfusion (2, 4, 6, and 24 hours; n = 2–5. *P < 0.05; ***P < 0.001 compared with sham) and (D) in WT, p40–/–, p19–/–, Il17a–/–, and Il17r–/– mice after 6 hours of kidney reperfusion (n = 2–8; *P < 0.05 compared with KO mice). Values are mean ± SEM.