1 Blencowe H, Cousens S, Oestergaard MZ, et al. National, regional, and worldwide estimates of preterm birth rates in the year 2010 with time trends since 1990 for selected countries: a systematic analysis and implications[J]. Lancet, 2012, 379(9832): 2162-2172.
[2]
2 Ngoc NT, Merialdi M, Abdel-Aleem HA, et al. Causes of stillbirths and early neonatal deaths: data from 7993 pregnancies in six developing countries[J]. Bull World Health Organ, 2006, 84(9): 699-705.
[3]
3 Lee J, Kim JS, Park JW, et al. Chronic chorioamnionitis is the most common placental lesion in late preterm birth[J]. Placenta, 2013, 24(8): 681-689.
is expressed in rheumatoid synovial fibroblasts and endothelial cells. Regulation by tumor necrosis factor-alpha and doxycycline[J]. Biol Chem, 1997, 272(50): 31504-31509.
8 Keelan JA. Pharmacological inhibition of inflammatory pathways for the prevention of preterm birth[J]. J Reprod Immunol, 2011, 88(2): 176-184.
[10]
9 Cole AA, Chubinskaya S, Schumacher B, et al. Chondrocyte matrix metalloproteinase-8. Human articular chondrocytes express neutrophil collagenase[J]. J Biol Chem, 1996, 271(18): 11023-11026.
[11]
10 Palosaari H, Wahltren J, Larmas M, et al. The expression of MMP-8 in human odontoblasts and dental pulp cells is down-regulated by TGF-beta1[J]. J Dent Res, 2000, 79(1): 77-84.
[12]
11 Roh CR, Oh WJ, Yoon Bk, et al. Up-regulation of matrix metalloproteinase-9 in human myometrium during labour: a cytokine-mediated process in uterine smooth muscle cell [J]. Mol Hum Reprod, 2000, 6(1): 96-102.
[13]
12 Weiss A, Goldman S, Shalev E. The matrix metalloproteinases (MMPs) in the decidua and fetal membranes[J]. FRONT Biosci, 2007, 12: 649-659.
[14]
13 Sennstrom MB, Brauner A, Bystrom B, et al. Matrix metalloproteinase-8
[15]
correlates with the cervical ripening process in humans[J]. Acta Obstet Gynecol Scand, 2003, 82(10): 904-911.
[16]
14 Rajasekhar L, Liou LB, Chan CY, et al. Matrix metalloproteinase-8 in sera and from polymorphonuclear leucocytes in rheumatoid arthritis: in vitro characterization and correlation with disease activity[J]. Clin Exp Rheumatol, 2004, 22(5): 597-602.
[17]
15 Romero R, Avita C, Sathanam V, et al. Amniotic fluid interleukin 6 in preterm labor. Association with infection[J]. J Clin Invest, 1990, 85(5): 1392-1400.
[18]
16 Stephen J, Fortunato RP, Menon KF, et al. Inflammatory cytokine (interleukins 1, 6 and 8 and tumor necrosis factor-alpha) release from cultured human fetal membranes in response to endotoxic lipopolysaccharide mirrors amniotic fluid concentrations[J]. Am J Obstet Gynecol, 1996, 174(6): 1855-1861.
