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Korean Journal of Obstetrics & Gynecology 2005;48(5):1221-1228.
Published online May 1, 2005.
Polymorphisms of matrix metalloproteinase-1 and -2 genes in the pregnant women with preterm premature rupture of membranes.
Ha Young Jung, Dae Young Jung, Guisera Lee, In Yang Park, Hyun Young Ahn, Hyun Sun Ko, Yeon Hee Kim, Soo Pyung Kim, Jong Chul Shin
Department of Obstetrics and Gynecology, College of Medicine, Catholic University of Korea, Seoul, Korea. jcshin@catholic.ac.kr
To elucidate whether polymorphisms of matrix metalloproteinase (MMP)-1 and -2 promotor genes are associated with preterm delivery caused by preterm premature rupture of membranes (PPROM) in Korean pregnant women. METHODS: We conducted a case-control study of korean pregnant women admitted to our labor and delivery unit. PPROM group (n=31) was defined as women whom delivered before 37 weeks of gestation due to PPROM. Control group (n=291) included women who were delivered after 37 weeks of gestation and had no history of preterm delivery. Genomic DNA was extracted from maternal peripheral blood. Polymerase chain reaction (PCR) and direct sequencing were done to determine the genotype of MMP-1 promotor -1607 and MMP-2 promotor -1306 of each participant. Data was analyzed by 2-tailed unpaired t test, x2 test, odds ratio with 95% confidence interval (CI) using SPSS 10.0. RESULTS: The carrier rate of MMP-1*1G was significantly higher in the PPROM group than that in the control group (p=0.020; odds ratio 3.09, 95% CIl 1.14-8.35). The frequency of 1G allele of MMP-1 was also significantly higher in the PPROM group than that in the control group (p=0.011, odds ratio 1.97, 95% CI 1.16-3.36). There was, however, no significant difference in the carrier rate of genotype as well as in the allelic frequencies of MMP-2*T in PPROM group compared with the control group (p=0.430, odds ratio 1.48, 95% CIl 0.56-3.96; p=0.377, odds ratio 1.58, 95% CI 0.57-4.40). CONCLUSION: Our data suggest that polymorphism of MMP-1 promotor -1607 might be associated with PPROM in Korean pregnant women.
Key Words: Preterm premature rupture of membranes, Matrix metallo-proproteinase, Polymorphism

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