Renal ischemia–reperfusion injury (IRI) elevates biglycan in plasma and kidney.
Soluble biglycan directly interacts with TLR-2 and TLR-4.
Overexpression of soluble biglycan worsens pathophysiology of renal IRI.
Disabled biglycan-triggered TLR-2/TLR-4 signaling in renal IRI is renoprotective.