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16 March 2018 : Laboratory Research  

Expression and Clinical Significance of NOD-Like Receptor Protein 3 (NLRP3) and Caspase-1 in Fetal Membrane and Placental Tissues of Patients with Premature Rupture of Membrane

Jinming Zhu1ABCDEFG*, Miao He1BCDEF, Chunling Ma1BCDE, Fengyun Peng1CDEF, Yuli Su1DEF, Lei Huang1EF

DOI: 10.12659/MSM.906157

Med Sci Monit 2018; 24: CLR1560-1566

Abstract

BACKGROUND: In this study, we aimed to investigate the expression of NOD-like receptor protein 3 (NLRP3) and caspase-1 in fetal membrane and placental tissues of patients with premature rupture of membrane (PROM), and to explore their role in PROM.

MATERIAL AND METHODS: Ninety women participated in this study: a control group of 30 healthy pregnant women, 30 with PPROM, and 30 with TPROM. Immunohistochemistry streptavidin-peroxidase (SP) assay was used to detect the protein expression of NLRP3 and caspase-1 in the fetal membrane and placental tissues. RT-PCR was used to detect the mRNA expression of NLRP3 and caspase-1 in fetal membrane and placental tissues.

RESULTS: The results of SP showed that NLRP3 and caspase-1 were mainly expressed in the cytoplasm of epithelial cells, mesenchymal cells, and trophoblast cells in fetal membranes, and the cytoplasm of placental syncytiotrophoblasts and vascular endothelial cells in placental tissues. The expression of NLRP3 and caspase-1 in the TPROM group was significantly higher than that in the PPROM group and control group (p<0.05), and there was a significant difference between the PPROM group and the control group. The results of RT-PCR showed that the mRNA expression level of NLRP3 and caspase-1 in the TPROM group was significantly higher than that in the PPROM group and control group (p<0.05), and the expression of NLRP3 mRNA and caspase-1 mRNA in the PPROM group was significantly different from that in the control group (p>0.05).

CONCLUSIONS: The increased expression of NLRP3 and caspase-1 in fetal membrane and placental tissues may be associated with the development of PROM.

Keywords: Fetal Membranes, Premature Rupture, Placenta

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750