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  • Title: Serial analysis of serum cardiac troponin I changes and correlation with clinical findings in 46 dogs with mitral valve disease.
    Author: Polizopoulou ZS, Koutinas CK, Dasopoulou A, Patsikas M, York M, Roman I, Gandhi M, Patel S, Koutinas AF, O'Brien PJ.
    Journal: Vet Clin Pathol; 2014 Jun; 43(2):218-25. PubMed ID: 24612252.
    Abstract:
    BACKGROUND: Cardiac troponin I (cTnI) is a biomarker correlated with the severity of myocardial injury. It is hypothesized that serial assessment of cTnI could provide information about the disease progression in chronic heart failure. OBJECTIVE: The purpose of the study was to correlate serial serum cTnI concentrations with clinical scoring and select diagnostic imaging findings in dogs managed for mitral valve degeneration (MVD) for a period of 6 months. METHODS: Client-owned dogs with MVD were prospectively recruited for the study. The dogs were allocated into 3 groups (I, II, III) according to the severity of their clinical signs based on the classification suggested by the International Small Animal Cardiac Health Council. During the 6-month study period, serum specimens for biochemical testing were obtained biweekly, clinical progression and response to treatment were also evaluated biweekly, and radiographic reevaluation was performed every 2 months. RESULTS: A total of 46 dogs were evaluated. There was a marked decrease in cTnI values during the first 2 weeks after initial diagnosis, more pronounced in group III, and corresponding to the initiation of therapy and clinical stabilization of animals. Serum cTnI was significantly different (P < .05) among the 3 dog groups throughout the study period. The interaction between Group and Period was significant in group III, indicating an upward cTnI trend evident in severely affected animals. A positive correlation was demonstrated in all groups between serum cTnI and clinical scoring. CONCLUSION: Long-term management of MVD in dogs could benefit from the serial measurement of cTnI.
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