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Updated: Dec 24, 2025

Assessment of Vascular Function in Patients With Chronic Kidney Disease
Published on: June 16, 2014
Relationship between Microfibrillar-Associated Protein 4 Levels and Subclinical Myocardial Damage in Chronic Kidney
Sonat Pınar Kara1, Gülsüm Özkan2, Demet Özkaramanlı Gür3
1Department of Internal Medicine, Tekirdağ Namık Kemal University School of Medicine, Tekirdağ, Turkey.
Introduction:
Chronic kidney disease (CKD) is a widespread health problem, in which mortality is most frequently due to cardiovascular diseases. Microfibrillar-associated protein 4 (MFAP4) is an extracellular matrix protein. MFAP4 is involved in several biological processes, particularly the maintenance of vascular integrity and extracellular matrix remodeling. Our review of the literature revealed no data concerning MFAP4 levels in CKD and its relationship with myocardial functions.
Objective:
The purpose of this study was therefore to investigate MFAP4 levels in CKD, parameters affecting these, and the relationship with myocardial functions.
Materials And Methods:
Seventy-nine CKD patients and 30 healthy controls were included in the study. Routine biochemical tests and echocardiography were performed once demographic data had been recorded. Blood specimens were collected for MFAP4 analysis, and the results were subjected to statistical analysis.
Results:
MFAP4 levels were significantly higher in the patient group than in the control group (p< 0.001). Doppler parameters revealed more frequent LV diastolic impairment in the patient group. Tissue Doppler systolic velocity and global longitudinal strain were significantly impaired, revealing the subclinical LV systolic dysfunction in CKD patients. MFAP4 elevation in the patient group was positively correlated with aortic root (AR), global circumferential strain (GCS), and GCS rate.
Conclusion:
Our results showed MFAP4 elevation in CKD for the first time in the literature, and that this elevation may be related to GCS and AR dilation. We think that, once supported by further studies, MFAP4 may constitute a marker in the evaluation of myocardial functions in CKD.
Insights
Microfibrillar-associated protein 4 (MFAP4) levels are elevated in chronic kidney disease (CKD) patients, correlating with impaired heart function. This suggests MFAP4 may serve as a novel biomarker for cardiovascular evaluation in CKD.
Area of Science:
- Cardiovascular Medicine
- Nephrology
- Biochemistry
Background:
- Chronic kidney disease (CKD) is a major health concern, with cardiovascular diseases being the leading cause of mortality.
- Microfibrillar-associated protein 4 (MFAP4), an extracellular matrix protein, is crucial for vascular integrity and remodeling.
- Existing literature lacks data on MFAP4 levels in CKD and its association with myocardial function.
Purpose of the Study:
- To investigate MFAP4 levels in CKD patients.
- To identify factors influencing MFAP4 levels in CKD.
- To explore the relationship between MFAP4 and myocardial function in CKD.
Main Methods:
- Study included 79 CKD patients and 30 healthy controls.
- Demographic data, routine biochemical tests, and echocardiography were performed.
- Blood samples were analyzed for MFAP4 levels, with statistical analysis of results.
Main Results:
- MFAP4 levels were significantly higher in CKD patients compared to controls (p<0.001).
- CKD patients exhibited more frequent left ventricular (LV) diastolic impairment.
- Subclinical LV systolic dysfunction was evident in CKD patients, with impaired tissue Doppler systolic velocity and global longitudinal strain.
- Elevated MFAP4 positively correlated with aortic root (AR) dimensions and global circumferential strain (GCS) and its rate.
Conclusions:
- This study reports elevated MFAP4 levels in CKD for the first time.
- MFAP4 elevation may be linked to GCS and AR dilation in CKD patients.
- MFAP4 could potentially serve as a biomarker for assessing myocardial function in CKD, pending further research.
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