{"doi":"10.1016/j.cardfail.2007.04.010","title":"Effects of Age on Plasma Matrix Metalloproteinases (MMPs) and Tissue Inhibitor of Metalloproteinases (TIMPs)","abstract":null,"journal":"Journal of Cardiac Failure","year":2007,"id":621782,"datarank":0.7667981682534817,"base_score":5.111987788356544,"endowment":5.111987788356544,"self_citation_contribution":0.7667981682534817,"citation_network_contribution":0.0,"self_endowment_contribution":0.7667981682534817,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":165,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_data_producer":false,"deposit_databanks":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":1605829,"name":"Carson S. Webb","orcid":null,"position":1,"is_corresponding":false},{"id":1605830,"name":"Weems R. Pennington","orcid":null,"position":2,"is_corresponding":false},{"id":1605831,"name":"Robert E. Stroud","orcid":null,"position":3,"is_corresponding":false},{"id":1605832,"name":"Amy E. Leonardi","orcid":null,"position":4,"is_corresponding":false},{"id":1605833,"name":"Leslie L. Clark","orcid":null,"position":5,"is_corresponding":false},{"id":1605834,"name":"Catherine D. McClure","orcid":null,"position":6,"is_corresponding":false},{"id":1605835,"name":"Laura Finklea","orcid":null,"position":7,"is_corresponding":false},{"id":451813,"name":"Francis G. Spinale","orcid":"0000-0003-0529-5605","position":8,"is_corresponding":false},{"id":92424,"name":"Michael R. Zile","orcid":"0000-0001-7076-221X","position":9,"is_corresponding":false},{"id":1605828,"name":"D. Dirk Bonnema","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"resolved":true,"title":"Effects of Age on Plasma Matrix Metalloproteinases (MMPs) and Tissue Inhibitor of Metalloproteinases (TIMPs)","abstract":"<h4>Background</h4>The mechanisms causing age-dependent changes in left ventricular (LV) structure and function are not completely understood. Matrix metalloproteinase (MMPs) and tissue inhibitor of metalloproteinases (TIMPs) constitute one important proteolytic pathway affecting LV remodeling. However, whether these determinants of extracellular matrix (ECM) composition change as a function of age has not been examined in an aging population free of clinically significant cardiovascular disease.<h4>Methods and results</h4>Subjects (n = 77, age 20-90 years) with no evidence of cardiovascular disease underwent echocardiography and measurement of plasma MMP-2, 7, 8, and 9 and TIMP-1, 2, and 4 (enzyme-linked immunosorbent assay). As subject age increased, volume/mass ratio decreased and mitral E/A ratio decreased. As subject age increased, MMP-2 increased (from 1188 +/- 99 ng/mL to 1507 +/- 76 ng/mL), MMP-7 increased (from 1.2 +/- 0.1 ng/mL to 3.1 +/- 0.6 ng/mL), MMP-9 decreased (from 29 +/- 7 ng/mL to 8 +/- 2 ng/mL), and TIMP-1, 2, and 4 increased (from 728 +/- 46 ng/mL to 1093 +/- 73 ng/mL, from 34 +/- 5 ng/mL to 53 +/- 6 ng/mL, and from 1.26 +/- 0.22 ng/mL to 2.34 +/- 0.30 ng/mL, respectively) (all P < .05). There were significant correlations between decreased LV volume/mass and E/A ratio and increased MMP-7 and TIMP-1 and 4.<h4>Conclusions</h4>MMPs and TIMPs changed as a function of age in the absence of clinically significant cardiovascular disease. These age-dependent alterations in MMP and TIMP profiles favor ECM accumulation and were associated with concentric remodeling and decreased LV diastolic function. Because of these age-dependent changes in this proteolytic system, the superimposition of disease processes such as myocardial infarction or hypertensive heart disease in the older subject may result in different myocardial ECM remodeling than that seen in a younger subject.","is_dataset_classified":null,"base_score":5.111987788356544,"endowment":5.111987788356544,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"17826643","pmcid":"PMC2698433","openalex_id":"https://openalex.org/W1997680731","authors":[],"funders":[{"funder_name":"NHLBI NIH HHS","grant_id":"R01 HL059165","title":null},{"funder_name":"NCRR NIH HHS","grant_id":"M01-RR-01070-251","title":null},{"funder_name":"NHLBI NIH HHS","grant_id":"P01-HL-048788","title":null},{"funder_name":"NHLBI NIH HHS","grant_id":"R01-HL-059165","title":null},{"funder_name":"NHLBI NIH HHS","grant_id":"P01 HL048788","title":null}],"total_grants":5,"fwci":4.1686,"citation_percentile":0.94566078,"influential_citations":0,"citation_trend":[{"year":2012,"count":2},{"year":2013,"count":3},{"year":2014,"count":11},{"year":2015,"count":13},{"year":2016,"count":11},{"year":2017,"count":15},{"year":2018,"count":11},{"year":2019,"count":8},{"year":2020,"count":8},{"year":2021,"count":11},{"year":2022,"count":9},{"year":2023,"count":9},{"year":2024,"count":4},{"year":2025,"count":17},{"year":2026,"count":1}],"oa_status":"green","license":"https://www.elsevier.com/tdm/userlicense/1.0/","oa_locations":[{"url":"https://www.ncbi.nlm.nih.gov/pmc/articles/2698433","host_type":"repository"},{"url":"https://www.ncbi.nlm.nih.gov/pmc/articles/2698433","host_type":"repository"},{"url":"https://api.elsevier.com/content/article/PII:S1071916407001546?httpAccept=text/xml","host_type":"publisher"},{"url":"https://api.elsevier.com/content/article/PII:S1071916407001546?httpAccept=text/plain","host_type":"publisher"},{"url":"https://doi.org/10.1016/j.cardfail.2007.04.010","host_type":"journal"},{"url":"https://pubmed.ncbi.nlm.nih.gov/17826643","host_type":"repository"}],"fields_of_study":["Cardiac Fibrosis and Remodeling","Protease and Inhibitor Mechanisms","Pulmonary Hypertension Research and Treatments","Adult","Aged","Aged, 80 and over","Aging","Blood Pressure","Echocardiography","Extracellular Matrix","Female","Heart Ventricles","Humans","Male","Matrix Metalloproteinase 7","Matrix Metalloproteinases","Middle Aged","Mitral Valve","Myocardium","Tissue Inhibitor of Metalloproteinase-1","Tissue Inhibitor of Metalloproteinases","Ventricular Function, Left","Tissue Inhibitor of Metalloproteinase-4"],"mesh_terms":["Tissue Inhibitor of Metalloproteinase-4","Adult","Aged","Aged, 80 and over","Aging","Blood Pressure","Echocardiography","Extracellular Matrix","Female","Heart Ventricles","Humans","Male","Middle Aged","Mitral Valve","Myocardium","Ventricular Function, Left","Tissue Inhibitor of Metalloproteinases","Tissue Inhibitor of Metalloproteinase-1","Matrix Metalloproteinases","Matrix Metalloproteinase 7"],"keywords":["Matrix metalloproteinase","Medicine","Matrix (chemical analysis)","Internal medicine","Composite material"],"sdg_mappings":[{"sdg_number":0,"sdg_label":"Good health and well-being"}],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-08-03T16:03:09.467285Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}