The abnormal production of matrix metalloproteinases (MMPs), especially MMP-9 and MMP-2, plays a pivotal role in hypertensive disorders of pregnancy, and as such, can influence the development of preeclampsia. These alterations may result from functional genetic polymorphisms in the promoter region of MMP-9 and MMP-2 genes, which modify MMP-9 and MMP-2 expression. We investigated the association of MMP-9 polymorphism rs3918242 (-1562 C>T) and MMP-2 polymorphism rs2285053 (-735 C>T) with the risk of preeclampsia. This case-control study was conducted on 345 women with preeclampsia and 281 age-matched women with normal pregnancies from Tunisian hospitals. Genomic DNA was extracted from whole blood collected at delivery. Genotypes for -1562 C>T and -735 C>T polymorphisms were performed using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). An increased frequency of heterozygous MMP-9 -1562 C/T genotype carriers was observed in women with preeclampsia compared to healthy controls (p = 0.03). In contrast, the MMP-2 -735 C>T polymorphism was not significantly different regarding frequency distribution of the allele and genotype between healthy pregnant women and women with preeclampsia. Our study suggests that the MMP-9 -1562 C/T variant, associated with high MMP-9 production, could be a genetic risk factor for preeclampsia in Tunisian women.

Centre de Recherche du Centre Hospitalier de l'Université de Montréal Montréal QC H2X 0A9 Canada

Laboratory of Cytogenetics and Reproductive Biology Center of Maternity and Neonatology Monastir Fattouma Bourguiba University Teaching Hospital Monastir 5000 Tunisia

Laboratory of Histology Embryology and Cytogenetics Faculty of Medicine University of Monastir Monastir 5000 Tunisia

Laboratory of Human Genome and Multifactorial Diseases Faculty of Pharmacy of Monastir University of Monastir Monastir 5000 Tunisia

School of Kinesiology and Physical Activity Sciences Université de Montréal Montréal QC H3T 1J4 Canada

The 1st Faculty of Medicine and General University Hospital Institute of Biology and Medical Genetics Charles University 12800 Prague Czech Republic

Citace poskytuje Crossref.org