PMID- 34442348 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210831 IS - 2075-4426 (Print) IS - 2075-4426 (Electronic) IS - 2075-4426 (Linking) VI - 11 IP - 8 DP - 2021 Jul 23 TI - Matrix Metalloproteinase-3 (MMP-3) Polymorphisms Are Associated with Prolonged ECG-Derived QTc Interval: A Cross-Sectional Study of the Australian Rural Population. LID - 10.3390/jpm11080705 [doi] LID - 705 AB - Matrix metalloproteinases (MMPs) are enzymes that are integral in extracellular matrix (ECM) remodeling. In age or disease, ECM may become dysregulated and contribute to fibrosis, which impairs cardiac electrical conduction. Two alleles regulate matrix metalloproteinase-3 (MMP-3) activity: one with five adenosine bases (5A; associated with higher MMP-3 activity and decreased fibrosis) and another with six adenosine bases (6A; associated with lower MMP-3 activity and increased fibrosis). Here, we determined whether ECG-derived QTc and related parameters are associated with the MMP-3 5A/6A genotype in a cross-section of the Australian rural population. A retrospective cross-sectional population was obtained from the Charles Sturt University Diabetes Screening Research Initiative. Genotype and resting 12-lead ECG parameters of 295 participants were analyzed. Amongst these participants, 85 individuals carried the 5A/5A genotype, 141 individuals carried the 5A/6A genotype, and 65 individuals carried the 6A/6A genotype. Compared to 5A/5A genotype carriers, 5A/6A genotype carriers had a significantly longer QTc duration by 9.50 ms (95% CI: 3.48-15.52, p = 0.002), whilst 6A/6A genotype carriers had an even longer QTc duration by 12.19 ms (95% CI: 5.04-19.34, p = 0.001). We found an association between MMP-3 5A/6A polymorphisms and QTc, independent of adjustments for age, gender, alcohol consumption, smoking status, body mass index and blood pressure. FAU - Lu, Yaxin AU - Lu Y AD - JL Operating Theatres, Royal Prince Alfred Hospital, Camperdown 2050, Australia. FAU - Ussher, Nathan AU - Ussher N AD - Rural Clinical School, University of New South Wales, Sydney 2052, Australia. FAU - Zhou, Yuling AU - Zhou Y AD - Xiamen Cardiovascular Hospital, Xiamen University, Xiamen 361005, China. AD - The School of Economics, Xiamen University, Xiamen 361005, China. FAU - Jelinek, Herbert AU - Jelinek H AD - Health Sciences, Charles Sturt University, Albury 2640, Australia. FAU - Hambly, Brett AU - Hambly B AD - Department of Pathology, University of Sydney, Sydney 2006, Australia. AD - Center for Healthy Futures, Torrens University, Pyrmont 2009, Australia. FAU - Li, Amy AU - Li A AUID- ORCID: 0000-0001-5413-3771 AD - Center for Healthy Futures, Torrens University, Pyrmont 2009, Australia. AD - Department of Pharmacy & Biomedical Sciences, La Trobe University, Flora Hill 3552, Australia. FAU - McLachlan, Craig S AU - McLachlan CS AD - Center for Healthy Futures, Torrens University, Pyrmont 2009, Australia. LA - eng PT - Journal Article DEP - 20210723 PL - Switzerland TA - J Pers Med JT - Journal of personalized medicine JID - 101602269 PMC - PMC8399546 OTO - NOTNLM OT - ECG OT - MMP-3 OT - matrix metalloproteinases OT - rural populations COIS- The authors declare no conflict of interest. EDAT- 2021/08/28 06:00 MHDA- 2021/08/28 06:01 PMCR- 2021/07/23 CRDT- 2021/08/27 01:12 PHST- 2021/06/29 00:00 [received] PHST- 2021/07/20 00:00 [accepted] PHST- 2021/08/27 01:12 [entrez] PHST- 2021/08/28 06:00 [pubmed] PHST- 2021/08/28 06:01 [medline] PHST- 2021/07/23 00:00 [pmc-release] AID - jpm11080705 [pii] AID - jpm-11-00705 [pii] AID - 10.3390/jpm11080705 [doi] PST - epublish SO - J Pers Med. 2021 Jul 23;11(8):705. doi: 10.3390/jpm11080705.