Absence of cystatin C involvement in ventricular remodelling and heart failure
J I Pérez-Calvo1, T Castiella Muruzábal2, M Búcar Barjud3
1Servicio de Medicina Interna, Hospital Clínico Universitario Lozano Blesa Facultad de Medicina, Instituto de investigación Sanitaria de Aragón (IIS Aragón), Zaragoza, España.
Insights
Cystatin C (CysC) serum levels did not correlate with cardiac structure in heart failure patients. CysC expression in cardiac tissue also showed no significant changes, suggesting CysC is not involved in pathological ventricular remodeling in heart failure.
Area of Science:
- Biochemistry
- Cardiology
- Pathology
Background:
- Cystatin C (CysC) is a protease with known prognostic value in heart failure (HF).
- Its role in HF is debated, potentially relating to glomerular filtration rate accuracy or direct involvement in pathological ventricular remodeling.
- This study investigates CysC's expression and correlation with cardiac remodeling in HF.
Purpose of the Study:
- To determine if Cystatin C (CysC) expression changes in fetal and adult cardiac tissue.
- To analyze the correlation between serum CysC concentrations and cardiac structure/morphology in heart failure (HF) patients.
Main Methods:
- Correlational analysis (Pearson's r, Spearman's test) between serum CysC and echocardiographic parameters in 351 HF patients.
- Immunohistochemical staining for CysC, MMP-9, and desmin in cardiac tissue from fetuses and adults.
Main Results:
- No significant correlation was found between serum CysC levels and cardiac parameters in HF patients.
- Immunohistochemistry revealed weak background CysC staining in all cardiac tissue samples, irrespective of age or cardiovascular disease status.
Conclusions:
- Cystatin C (CysC) does not appear to play a significant role in the pathological remodeling of the left ventricle in heart failure.
- These findings suggest CysC's prognostic value in HF may be primarily linked to its role as a marker of glomerular filtration rate.
Unlabelled:
Cystatin C (CysC) is a protease encoded by housekeeping genes. Although its prognostic value in heart failure (HF) is well known, it is debatable whether this value is due to the greater accuracy of CysC in calculating the glomerular filtration rate or to its involvement in pathological ventricular remodelling. The aim of this study was to determine whether CysC expression changes in the myocardium of foetuses of different ages and in the myocardium of adults with various cardiovascular diseases, as well as to analyse the correlation between its serum concentrations and cardiac structure and morphology in a patient group with HF.
Patients And Methods:
We analysed the correlations (Pearson's r and Spearman's test) between the serum CysC levels and echocardiographic parameters of 351 patients with HF. We also performed immunohistochemical staining for CysC, metalloproteinase-9 (MMP-9) and desmin in 9 cardiac tissue samples from autopsies of 4 foetuses of different gestational ages and 5 healthy adults or adults with cardiovascular disease.
Results:
For the patients with HF, there was no correlation between the CysC concentrations and the cardiac parameters measured by 2D echocardiography. The immunohistochemistry showed a weak background staining for CysC in all samples, regardless of age and the presence or absence of cardiovascular diseases.
Conclusions:
Our results suggest that CysC does not have a significant role in the pathological remodelling of the left ventricle in HF.
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