Research Article
Amniotic Fluid Infection in Preterm Pregnancies with Intact Membranes
Table 2
Amniotic fluid biomarker concentrations in IAI suspected cases and controls.
| Biomarker ng/mL | Cases () | Controls () | value | Adjusted |
| Cascade 1 | | | | | MMP-8 | 11 (3–5431) | 4.5 (2–76) | <0.001 | 0.004 | MMP-9 | 10 (0.7–9678) | 2.6 (0.6–19) | 0.003 | 0.005 | MPO | 362 (75.6–79095) | 80 (8.6–488) | <0.001 | <0.001 | IL-6 | 1.1 (0.03–1021) | 0.4 (0.06–8.2) | 0.004 | 0.163 | Cascade 2 | | | | | HNE | 19 (2.8–16380) | 23 (1.5–200) | 0.51 | 0.444 | Elafin | 288 (7–10491) | 74.5 (7–3739) | 0.001 | 0.002 | MMP-9 | 10 (0.7–9678) | 2.6 (0.6–19) | 0.003 | 0.005 | Cascade 3 | | | | | MMP-2 | 296 (153–938) | 216 (72–505) | 0.01 | 0.01 | TIMP-1 | 1347 (633–9752) | 1112 (505–3473) | 0.011 | 0.022 | MMP-8 /TIMP-1 molar ratio | 0.005 (0.001–0.973) | 0.002 (0–0.014) | <0.001 | 0.069 | CRP | 43 (5–1783) | 28.8 (5–670) | 0.343 | 0.424 | Biomarkers routinely used in clinical practice | | | | | LD IU/L° | 234 (88–5459) | 14.5 (4.0–156) | <0.001 | | Gluc mmol/L° | 1.9 (0.0–4.0) | 1.7 (0.3–4.9) | 0.585 | |
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Median (range). °Missing in controls. by gestational age at amniocentesis. MIAC, microbial invasion of the amniotic cavity. MMP-8, matrix metalloproteinase-8; MMP-9, matrix metalloproteinase-9; MPO, myeloperoxidase; IL-6, interleukin-6; MMP-2, matrix metalloproteinase-2; HNE, neutrophil elastase; TIMP-1, tissue inhibitor of matrix metalloproteinase-1; CRP, C-reactive protein; LD, lactate dehydrogenase; Gluc, glucose.
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