UUO activates redundant inflammatory pathways in mouse kidneys. (A) Nlrp1b and Nlrp12 mRNA expression (quantitative real time reverse transcriptase–PCR, normalized to GAPDH) in ligated (Lig) or contralateral (Ctrl) Nlrp3+/+ mouse kidneys at 14 days after UUO. (B) Hyaluronan content (ELISA) in kidney lysates from Nlrp3+/+ and Nlrp3−/− mice at 14 days after UUO (sham versus Nlrp3+/+, P < 0.01, versus Nlrp3−/−, P < 0.05; Nlrp3+/+ versus Nlrp3−/−, NS; n = 5) (C) Immunoblotting for biglycan and HMGB1 in kidney lysates from Nlrp3+/+ and Nlrp3−/− mice at 3, 7, and 14 days after UUO. Fourteen-day sham and contralateral kidneys are used as controls.