PMID- 24267248 OWN - NLM STAT- MEDLINE DCOM- 20140728 LR - 20181202 IS - 1879-1484 (Electronic) IS - 0021-9150 (Linking) VI - 231 IP - 2 DP - 2013 Dec TI - Oxidized low-density lipoprotein, matrix-metalloproteinase-8 and carotid atherosclerosis in spinal cord injured subjects. PG - 341-5 LID - S0021-9150(13)00602-3 [pii] LID - 10.1016/j.atherosclerosis.2013.10.005 [doi] AB - OBJECTIVE: Previous reports have indicated that subjects with chronic spinal cord injury (SCI) exhibit increased cardiovascular risk compared to able-bodied individuals. This study investigated the relationship between plasmatic oxidized low-density lipoprotein (OxLDL), matrix metalloproteinases (MMPs) and tissue inhibitors of MMPs (TIMPs) levels and vascular remodeling in SCI subjects and the role of physical activity in this regard. METHODS: We studied 42 men with chronic (>/=2 years) SCI [18 sedentary (S-SCI) and 24 physically active (PA-SCI)] and 16 able-bodied men by clinical, anthropometric, laboratory, and carotid intima-media thickness (IMT) analysis. All enrolled subjects were normotensive, non-diabetics, non-smokers and normolipemic. Plasmatic OxLDL, MMP-2, MMP-8, MMP-9, TIMP-1 and TIMP-2 levels were determined by enzyme-linked immunosorbent assay. RESULTS: Carotid IMT, IMT/diameter ratio and OxLDL levels of PA-SCI and able-bodied subjects were statistically similar. Conversely, S-SCI subjects exhibited higher IMT, IMT/diameter ratio and OxLDL levels compared to PA-SCI (p < 0.01, p < 0.001 and p = 0.01, respectively) and able-bodied (p < 0.001 for all) individuals. Results of bivariate correlation analysis including all injured subjects showed that carotid IMT and IMT/diameter ratio only correlated with OxLDL, MMP-8 and MMP-8/TIMP-1 ratio. Further stepwise regression analysis adjusted for the presence or not of physical activity and age showed that OxLDL was associated with carotid IMT and IMT/diameter ratio, while MMP-8 was associated with IMT/diameter ratio in SCI individuals. CONCLUSIONS: Plasmatic OxLDL and MMP-8 levels are associated with carotid atherosclerosis and there is an interaction among physical inactivity, atherosclerosis and OxLDL in SCI individuals. CI - Copyright (c) 2013 Elsevier Ireland Ltd. All rights reserved. FAU - Paim, Layde R AU - Paim LR AD - Department of Internal Medicine, School of Medical Sciences, University of Campinas, Campinas, SP, Brazil. FAU - Schreiber, Roberto AU - Schreiber R FAU - Matos-Souza, Jose R AU - Matos-Souza JR FAU - Silva, Anselmo A AU - Silva AA FAU - Campos, Luis F AU - Campos LF FAU - Azevedo, Eliza R AU - Azevedo ER FAU - Alonso, Karina AU - Alonso K FAU - de Rossi, Guilherme AU - de Rossi G FAU - Etchebehere, Mauricio AU - Etchebehere M FAU - Gorla, Jose I AU - Gorla JI FAU - Cliquet, Alberto Jr AU - Cliquet A Jr FAU - Nadruz, Wilson Jr AU - Nadruz W Jr LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20131015 PL - Ireland TA - Atherosclerosis JT - Atherosclerosis JID - 0242543 RN - 0 (Lipoproteins, LDL) RN - 0 (TIMP1 protein, human) RN - 0 (TIMP2 protein, human) RN - 0 (Tissue Inhibitor of Metalloproteinase-1) RN - 0 (oxidized low density lipoprotein) RN - 127497-59-0 (Tissue Inhibitor of Metalloproteinase-2) RN - EC 3.4.24.24 (MMP2 protein, human) RN - EC 3.4.24.24 (Matrix Metalloproteinase 2) RN - EC 3.4.24.34 (MMP8 protein, human) RN - EC 3.4.24.34 (Matrix Metalloproteinase 8) RN - EC 3.4.24.35 (MMP9 protein, human) RN - EC 3.4.24.35 (Matrix Metalloproteinase 9) SB - IM MH - Adult MH - Carotid Arteries/diagnostic imaging/*pathology MH - Carotid Artery Diseases/*blood/complications/pathology MH - Carotid Intima-Media Thickness MH - Case-Control Studies MH - Exercise MH - Humans MH - Lipoproteins, LDL/*blood MH - Male MH - Matrix Metalloproteinase 2/blood MH - Matrix Metalloproteinase 8/*blood MH - Matrix Metalloproteinase 9/blood MH - Paraplegia/blood/complications MH - Quadriplegia/blood/complications MH - Risk MH - Sedentary Behavior MH - Spinal Cord Injuries/*blood/complications MH - Tissue Inhibitor of Metalloproteinase-1/blood MH - Tissue Inhibitor of Metalloproteinase-2/blood OTO - NOTNLM OT - Intima-media thickness OT - Metalloproteinases OT - Oxidized LDL OT - Paraplegia OT - Tetraplegia EDAT- 2013/11/26 06:00 MHDA- 2014/07/30 06:00 CRDT- 2013/11/26 06:00 PHST- 2013/07/04 00:00 [received] PHST- 2013/09/01 00:00 [revised] PHST- 2013/10/02 00:00 [accepted] PHST- 2013/11/26 06:00 [entrez] PHST- 2013/11/26 06:00 [pubmed] PHST- 2014/07/30 06:00 [medline] AID - S0021-9150(13)00602-3 [pii] AID - 10.1016/j.atherosclerosis.2013.10.005 [doi] PST - ppublish SO - Atherosclerosis. 2013 Dec;231(2):341-5. doi: 10.1016/j.atherosclerosis.2013.10.005. Epub 2013 Oct 15.