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Scanning Electron Microscopy of Macerated Tissue to Visualize the Extracellular Matrix
Published on: June 14, 2016
Extracellular matrix turnover and disease severity in Anderson-Fabry disease
J S Shah1, D A Hughes, M H Tayebjee
1The Heart Hospital, UCL, London, UK.
Journal of Inherited Metabolic Disease
|December 13, 2006
Summary
Anderson-Fabry Disease (AFD) involves abnormal extracellular matrix (ECM) turnover, indicated by elevated matrix metalloproteinase-9 (MMP-9) levels. Higher MMP-9 correlates with disease severity and impaired heart function in AFD patients.
Area of Science:
- Cardiovascular Medicine
- Metabolic Disorders
- Biochemistry
Background:
- Anderson-Fabry Disease (AFD) is a genetic metabolic disorder leading to premature death from cardiovascular and renal complications.
- AFD patients experience progressive left ventricular (LV) remodeling and heart failure.
- Altered extracellular matrix (ECM) turnover is hypothesized to contribute to cardiac pathology in AFD.
Purpose of the Study:
- To investigate the role of ECM turnover in cardiac disease within AFD patients.
- To compare levels of matrix metalloproteinase-9 (MMP-9) and tissue inhibitors of metalloproteinases (TIMPs) between AFD patients and healthy controls.
- To assess the correlation between MMP-9 levels, disease severity (Mainz Severity Score Index - MSSI), and cardiac function (echocardiography) in AFD.
Main Methods:
- Serum analysis of MMP-9, TIMP-1, and TIMP-2 in 29 AFD patients and 21 controls.
- Clinical assessment, echocardiography, and MSSI measurement for all AFD patients.
- Statistical analysis including correlation and stepwise linear regression to evaluate relationships between biomarkers and clinical parameters.
Main Results:
- Significantly higher MMP-9 levels were observed in AFD patients compared to controls (p < 0.001).
- No significant differences in TIMP-1 or TIMP-2 levels were found between groups.
- MMP-9 levels positively correlated with MSSI (r = 0.5, p = 0.01) and negatively with fractional shortening (FS) (r = -0.5 to -0.6, p < 0.01).
Conclusions:
- AFD patients exhibit abnormal ECM turnover compared to controls.
- Elevated MMP-9 levels are associated with cardiac remodeling and impaired systolic function in AFD.
- Circulating MMP-9 may serve as a valuable biomarker for assessing AFD severity and treatment response.
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