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Updated: Mar 1, 2026

Assessment of Vascular Function in Patients With Chronic Kidney Disease
Published on: June 16, 2014
The relationship between serum lipid parameters and renal frame count in hypertensive patients with normal renal
Emrah İpek1, Mustafa Yolcu, Erkan Yıldırım
1Department of Cardiology, Erzurum Regional Training and Research Hospital, Erzurum, Turkey. dremrah21@yahoo.com.
Insights
High cholesterol levels, indicated by elevated low-density lipoprotein (LDL) and total cholesterol (TC), are linked to increased renal frame count (RFC) in hypertensive patients. Aggressive risk factor modification may help reduce renal failure risk.
Area of Science:
- Nephrology
- Cardiovascular Medicine
- Medical Imaging
Background:
- Atherosclerosis contributes to renovascular disease, with high cholesterol being a key risk factor.
- Renal frame count (RFC) quantifies macrovascular blood flow in renal arteries.
- Understanding the link between lipids and renal blood flow is crucial for managing renovascular disease.
Purpose of the Study:
- To investigate the relationship between serum lipid parameters (LDL and TC) and RFC in hypertensive patients.
- To identify predictors of elevated RFC in this patient population.
Main Methods:
- A cross-sectional study involving 116 hypertensive patients.
- Patients were grouped based on serum low-density lipoprotein (LDL <130 mg/dL vs. ≥130 mg/dL) and total cholesterol (TC <200 mg/dL vs. ≥200 mg/dL) levels.
- Renal frame count (RFC) was measured using an angiographic method.
Main Results:
- Higher mean RFC was observed in patients with elevated LDL and TC levels (p<0.001).
- RFC showed a positive correlation with smoking, TC, and LDL.
- Multivariate analysis identified LDL, TC, smoking, and creatinine clearance as independent predictors of RFC.
Conclusions:
- Elevated LDL, TC, and smoking are potential predictors of RFC in hypertensive patients with normal renal function.
- Aggressive modification of these risk factors may be beneficial in reducing the risk of renal failure.
Objective:
Atherosclerosis can contribute to renovascular disease, and high cholesterol level is an independent risk factor for disease progression. Renal frame count (RFC) is an objective angiographic method of measuring macrovascular blood flow in the main renal artery and its segmental branches. The aim of the present study was to demonstrate relationship between serum lipid parameters and RFC.
Methods:
In this cross-sectional study, 116 hypertensive patients were allocated into 2 groups according to serum low-density lipoprotein (LDL) levels. Group 1 comprised 60 patients with LDL <130 mg/dL and Group 2 consisted of 56 individuals with LDL ≥130 mg/dL. The patients were also divided into 2 groups according to total cholesterol (TC) levels (52 patients in group with TC <200 mg/dL and 64 patients in group with TC ≥200 mg/dL).
Results:
Group 2 had higher mean RFC than Group 1 (p<0.001). RFC of both kidneys in Group 2 was significantly higher than results in Group 1 (p<0.001 and p=0.023, respectively). We found similar significant results in comparison of TC-based patient groups. RFC had positive correlation with smoking, TC, and LDL (r=0.326, p=0.035; r=0.393, p=0.010; and r=0.386, p=0.012, respectively). In multivariate linear regression analysis, LDL, TC, smoking, and creatinine clearance were independent predictors of RFC.
Conclusion:
In conclusion, in hypertensive patients with normal renal function, LDL, TC, and smoking may be predictors of RFC and aggressive risk factor modification may help to reduce the risk of renal failure.
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