PROBLEM: To determine the changes of pentraxin 3 (PTX3) level in noninvasively obtained cervical fluid samples from women with preterm prelabor rupture of membranes (PPROM) based on the presence of microbial invasion of the amniotic cavity (MIAC) and/or intra-amniotic inflammation (IAI), and intra-amniotic infection (the presence of both MIAC and IAI). METHODS OF STUDY: A total of 160 women with PPROM were included. Cervical fluid samples were obtained using a Dacron polyester swab and amniotic fluid samples were obtained by transabdominal amniocentesis. Cervical fluid PTX3 levels were assessed using enzyme-linked immunosorbent assay. RESULTS: PTX3 was found in all the cervical fluid samples and its levels were higher in women with MIAC, IAI, and intra-amniotic infection than in women without these conditions. When the women were categorized into four subgroups based on the presence of MIAC and/or IAI, women with intra-amniotic infection had higher cervical fluid PTX3 levels than those with sterile IAI (IAI alone), colonization (MIAC alone), or no MIAC or IAI. A cervical fluid PTX3 level of 11 ng/mL was the best value for identifying the presence of intra-amniotic infection in women with PPROM. CONCLUSIONS: PTX3 is a constituent of cervical fluid of women with PPROM. Cervical fluid PTX3 level reflects the situation in the intra-amniotic compartments of women with PPROM. Cervical fluid PTX3 is a potential marker for the noninvasive identification of intra-amniotic infection in PPROM.

Biomedical Research Center University Hospital Hradec Kralove Hradec Kralove Czechia

Department of Clinical Immunology and Allergy Charles University Faculty of Medicine in Hradec Kralove University Hospital Hradec Kralove Hradec Kralove Czechia

Department of Genetics and Bioinformatics Division of Health Data and Digitalisation Norwegian Institute of Public Health Oslo Norway

Department of Obstetrics and Gynecology Sahlgrenska Academy Gothenburg University Gothenburg Sweden

Department of Obstetrics and Gynecology University Hospital Brno Faculty of Medicine Masaryk University Brno Czechia

Department of Obstetrics and Gynecology University Hospital Hradec Kralove Charles University Faculty of Medicine in Hradec Kralove Hradec Kralove Czechia

Department of Obstetrics and Gynecology University Hospital Ostrava Ostrava Czechia

Institute of Clinical Biochemistry and Diagnostics University Hospital Hradec Kralove Hradec Kralove Czechia

Institute of Clinical Microbiology University Hospital in Hradec Kralove Charles University Faculty of Medicine Hradec Kralove Hradec Kralove Czechia

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