tailieunhanh - Báo cáo y học: " Genetic variation in TIMP1 but not MMPs predict excess FEV1 decline in two general populationbased cohorts"

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học 'Respiratory Research cung cấp cho các bạn kiến thức về ngành y đề tài: " Genetic variation in TIMP1 but not MMPs predict excess FEV1 decline in two general populationbased cohorts. | van Diemen et al. Respiratory Research 2011 12 57 http content 12 1 57 RESPIRATORY RESEARCH RESEARCH Open Access Genetic variation in TIMP1 but not MMPs predict excess FEV1 decline in two general populationbased cohorts c c qn miomoro1 ne Pcrctm ì2 ỉ l Ciocl Iinclci1 A R Ic it ctr i3 l-l A Cmit4 MÉ l Rrsovon1 Cc van Diemen DS costiiia M Siedlinski A Blokstra HA jmn and HM Boezen Abstract Background An imbalance in Matrix MetdlloProleases MMPs and Tissue Inhibitors of MMPs TIMPs contributes io Chronic Obstructive Pulmonary Disease COPD development. Longitudinal studies investigating Single Nucleotide Polymorphisms SNPs in MMPs and TIMPs with respect to COPD development and lung function decline in the general population are lacking. Methods We genotyped SNPs in MMP1 G-1607GG MMP2 -1306 C T MMP9 3 tagging SNPs MMP12 A-82G and Asn357Ser and TIMP1 Phe124Phe and Ile158Ile in 1390 Caucasians with multiple FEV1 measurements from a prospective cohort study in the general population. FEV1 decline was analyzed using linear mixed effect models adjusted for confounders. Analyses of the X-chromosomal TIMP1 gene were stratified according to sex. All significant associations were repeated in an independent general population cohort n 1152 . Results MMP2 -1306 TT genotype carriers had excess FEV1 decline ml yr p compared to wild type carriers. TIMP1 Ile158Ile predicted significant excess FEV1 decline in both males and females. TIMP1 Phe124Phe predicted significant excess FEV1 decline in males only which was replicated p in the second cohort. The MMP2 and TIMP1 Ile158Ile associations were not replicated. Although power was limited we did not find associations with COPD development. Conclusions We for the first time show that TIMP1 Phe124Phe contributes to excess FEV1 decline in two independent prospective cohorts albeit not quite reaching conventional statistical significance in the replication cohort. SNPs in MMPs evidently do not contribute