ICH increased PDGF-D expression and macrophage infiltration.
PDGFR-inhibition decreased ICH-induced brain injury.
Recombinant PDGF-D induced TNF-α production and PDGFR-inhibition attenuated it.
A plasmin-antagonist suppressed activation of PDGFR-β and microglia.
Plasmin increased PDGF-D expression.
PDGF-D inhibition reduced neutrophil infiltration.