Fig. 5

Role of CD31 in neutrophil activation and intestinal injury after acute mesenteric ischemia. a Principal component analysis showed positive correlations between intestinal MMP-9, plasma MMP-9, intestinal luminal hemoglobin, plasma E. coli DNA, and the shedding of CD31 into plasma in all groups. Conversely, epithelial area was strongly negatively correlated to these parameters. b Principal component analysis identified a clustering of the P8RI and sham groups, widely separated from I/R controls. MMP-9: matrix metalloproteinase-9