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Published on: November 7, 2017
MicroRNAs Are Associated with Uremic Toxicity, Cardiovascular Calcification, and Disease
Background:
Vascular calcification has been recognized to be a major risk factor in chronic kidney disease (CKD) and downstream cardiovascular complications. Micro-RNAs (miRNAs) are small noncoding RNAs comprising 20-25 nucleotides that regulate gene expression by inhibiting or degrading the target mRNA, and constitute potential new biomarkers and future therapeutic strategies.
Summary:
We tested the relevance of several cardiovascular-specific miRNAs as new biomarkers for CKD, cardiovascular disease, and cardiovascular complications. We have shown, in murine models, that miR-126, miR-143, miR-145, and miR-223 levels and the levels of their specific targets are modulated during the crucial stages of CKD and atherosclerosis. In addition, miRNA levels were correlated with classical biomarkers of CKD and atherosclerosis such as cholesterol, urea, and calcium levels. Dysregulation of these same miRNAs was observed in the serum of CKD, hemodialyzed, and kidney transplant recipients. We also demonstrated correlations between serum miRNAs and uremic toxins. We therefore suggest that miR-126, miR-143, miR-145, and miR-223 are potential biomarkers of vascular calcification and cardiovascular disease associated with CKD. Key Messages: The identification of new biomarkers that can improve the diagnosis and monitoring of CKD and cardiovascular disease patients is crucial in modern medicine. Our data could be particularly useful in the management of cardiovascular disease associated with CKD, provide new light in the understanding of the molecular events underlying cardiovascular disease and cardiovascular calcification, and possibly be used as a treatment strategy to prevent these diseases.
Insights
Specific micro-RNAs (miRNAs) show potential as biomarkers for vascular calcification and cardiovascular disease in chronic kidney disease (CKD) patients. These findings could improve diagnosis and management of CKD complications.
Area of Science:
- Biochemistry
- Molecular Biology
- Nephrology
Background:
- Vascular calcification is a significant risk factor for cardiovascular complications in chronic kidney disease (CKD).
- Micro-RNAs (miRNAs) are small noncoding RNAs that regulate gene expression and are potential biomarkers and therapeutic targets.
Purpose of the Study:
- To investigate the relevance of cardiovascular-specific miRNAs as biomarkers for CKD, cardiovascular disease, and related complications.
- To explore the role of specific miRNAs in the pathogenesis of vascular calcification and atherosclerosis in CKD.
Main Methods:
- Analysis of miRNA and target gene expression in murine models of CKD and atherosclerosis.
- Correlation of miRNA levels with established biomarkers of CKD and atherosclerosis (cholesterol, urea, calcium).
- Measurement of serum miRNA levels in CKD patients, hemodialysis patients, and kidney transplant recipients.
Main Results:
- Levels of miR-126, miR-143, miR-145, and miR-223 were modulated during CKD and atherosclerosis in murine models.
- Serum miRNA levels correlated with classical CKD biomarkers and uremic toxins.
- Dysregulation of these miRNAs was observed in CKD patients, including those on hemodialysis and transplant recipients.
Conclusions:
- miR-126, miR-143, miR-145, and miR-223 are potential biomarkers for vascular calcification and cardiovascular disease associated with CKD.
- These miRNAs may aid in the diagnosis, monitoring, and management of cardiovascular complications in CKD patients.
- Further research into these miRNAs could offer new therapeutic strategies for preventing cardiovascular disease in CKD.
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