TREM1 and preterm premature rupture of the membranes: In PPROM <34.0 weeks, high intra-amniotic inflammatory response, mediated by IL-6, IL-8, IL-10, BDNF, GMC-SF, MCP-1, MIP-1, MMP-9 and TREM-1, was observed when both MIAC and HCA were present.