Oral abstract presented at the American College of Veterinary Internal Medicine Forum, Montreal, Canada, June 2009.
Cardiac Troponin I Is Associated with Severity of Myxomatous Mitral Valve Disease, Age, and C-Reactive Protein in Dogs
Article first published online: 30 NOV 2009
Copyright © 2009 by the American College of Veterinary Internal Medicine
Journal of Veterinary Internal Medicine
Volume 24, Issue 1, pages 153–159, January/February 2010
How to Cite
Ljungvall, I., Höglund, K., Tidholm, A., Olsen, L.H., Borgarelli, M., Venge, P. and Häggström, J. (2010), Cardiac Troponin I Is Associated with Severity of Myxomatous Mitral Valve Disease, Age, and C-Reactive Protein in Dogs. Journal of Veterinary Internal Medicine, 24: 153–159. doi: 10.1111/j.1939-1676.2009.0428.x
The study was performed at the Faculty of Veterinary Medicine and Animal Sciences in Uppsala.
- Issue published online: 4 JAN 2010
- Article first published online: 30 NOV 2009
- Submitted May 20, 2009; Revised September 21, 2009; Accepted October 12, 2009.
- Heart failure;
- Valvular disease
Background: Concentrations of cardiac troponin I (cTnI) and C-reactive protein (CRP) might be associated with cardiac remodeling in dogs with myxomatous mitral valve disease (MMVD). Age- and sex-dependent variations in cTnI concentration have been described.
Objective: To investigate whether plasma concentrations of cTnI and CRP are associated with severity of MMVD, and investigate potential associations of dog characteristics on cTnI and CRP concentrations.
Animals: Eighty-one client-owned dogs with MMVD of varying severity.
Methods: Dogs were prospectively recruited for the study. Dogs were classified according to severity of MMVD. Plasma cTnI was analyzed by a high sensitivity cTnI assay with a lower limit of detection of 0.001 ng/mL, and plasma CRP was analyzed by a canine-specific CRP ELISA.
Results: Higher cTnI concentrations were detected in dogs with moderate (0.014 [interquartile range 0.008–0.029] ng/mL, P= .0011) and severe (0.043 [0.031–0.087] ng/mL, P < .0001) MMVD, compared with healthy dogs (0.001 [0.001–0.004] ng/mL). Dogs with severe MMVD also had higher cTnI concentrations than dogs with mild (0.003 [0.001–0.024] ng/mL, P < .0001) and moderate (P= .0019) MMVD. There were significant associations of age, CRP, heart rate, and left ventricular end-diastolic diameter, on cTnI concentration C-reactive protein did not differ among severity groups, but was significantly associated with cTnI, breed, and systolic blood pressure on CRP concentration.
Conclusions and Clinical Importance: Analysis of cTnI concentration has potential to increase knowledge of overall cardiac remodeling in dogs with MMVD. However, effect of age on cTnI needs consideration when assessing cTnI.