Weir, R. A.P., Miller, A. M., Petrie, C. J., Clements, S., Steedman, T., Dargie, H. J., Squire, I. B., Ng, L. L., McInnes, I. B. and McMurray, J. J.V. (2012) Interleukin-21 – a biomarker of importance in predicting myocardial function following acute infarction? Cytokine, 60(1), pp. 220-225. (doi: 10.1016/j.cyto.2012.06.002) (PMID:22748465)
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Publisher's URL: http://dx.doi.org/10.1016/j.cyto.2012.06.002
Abstract
<b>Introduction</b> Following acute myocardial infarction (AMI), the acute inflammatory response contributes to wound healing but also to progressive myocardial injury. Interleukin-21 (IL-21) plays a key role in immunoregulation; whether IL-21 is associated with left ventricular (LV) remodelling after AMI is unknown.<p></p> <b>Methods</b> Plasma IL-21 concentrations were measured in 100 patients (age 58.9 ± 12.0 years, 77% male) admitted with AMI and LV dysfunction, at baseline (mean 46 h) and again at 24 weeks; cardiac magnetic resonance and measurement of B-type natriuretic peptide, monocyte chemoattractant protein-1, matrix metalloproteinase (MMP)-2, -3, -9, and tissue inhibitor of metalloproteinase (TIMP)-1, -2, -4 occurred at both time-points. Remodelling was defined as change in LV end-systolic volume index (ΔLVESVI). <p></p> <b>Results</b> Plasma IL-21 concentration was unchanged over time (48.1 [SD 35.4] pg/mL at baseline vs. 48.8 [61.3] pg/mL at 24 weeks, p = 0.92). Baseline IL-21 correlated significantly with ΔLVESVI (r = 0.30, p = 0.005) and change in LV end-diastolic volume index (r = 0.33, p = 0.003). On multivariate analysis, plasma IL-21 was an independent predictor of remodelling. IL-21 was also significantly associated with higher TIMP-4 concentrations and lower MMP-9 concentrations at baseline. <p></p> <b>Conclusions</b> IL-21 predicts adverse remodelling following AMI in patients with LV dysfunction. Whether it plays a direct pathophysiological role in remodelling merits further study. <p></p>
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | McInnes, Professor Iain and Miller, Dr Ashley and Dargie, Professor Henry and McMurray, Professor John and Hopkins, Mrs Tracey |
| Authors: | Weir, R. A.P., Miller, A. M., Petrie, C. J., Clements, S., Steedman, T., Dargie, H. J., Squire, I. B., Ng, L. L., McInnes, I. B., and McMurray, J. J.V. |
| College/School: | College of Medical Veterinary and Life Sciences > School of Cardiovascular & Metabolic Health College of Medical Veterinary and Life Sciences > School of Infection & Immunity College of Medical Veterinary and Life Sciences > School of Medicine, Dentistry & Nursing |
| Journal Name: | Cytokine |
| Publisher: | Elsevier |
| ISSN: | 1043-4666 |
| Published Online: | 27 June 2012 |
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