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Updated: May 24, 2026
Assessment of Vascular Function in Patients With Chronic Kidney Disease
Published on: June 16, 2014
Endothelial dysfunction and cardiovascular disease in early-stage chronic kidney disease: cause or association?
William E Moody1, Nicola C Edwards, Melanie Madhani
1Cardiovascular and Respiratory Sciences, School of Clinical & Experimental Medicine, College of Medical and Dental Sciences, University of Birmingham, Edgbaston, UK. william.moody@nhs.net
Insights
Kidney disease (CKD) increases cardiovascular disease (CVD) risk, potentially through endothelial dysfunction (ED). Studying kidney donors helps clarify the direct impact of reduced kidney function on ED and CVD risk.
Area of Science:
- Nephrology
- Cardiology
- Vascular Biology
Background:
- Chronic kidney disease (CKD) is strongly linked to cardiovascular disease (CVD), with lower estimated glomerular filtration rate (eGFR) correlating with higher cardiovascular event rates.
- Endothelial dysfunction (ED) is associated with CKD, but its relationship with GFR and the exact threshold for onset remain unclear, especially in early-stage CKD due to confounding factors like diabetes and hypertension.
Purpose of the Study:
- To investigate the direct effect of reduced glomerular filtration rate (GFR) on endothelial function (ED) and cardiovascular (CV) risk.
- To utilize living kidney donors as a model to overcome confounding factors present in observational CKD studies.
- To gain insight into the pathophysiology of CVD in CKD and evaluate potential therapeutic targets.
Main Methods:
- Examine changes in endothelial function in living kidney donors before and after nephrectomy.
- Compare endothelial function in individuals with normal renal function to those with experimentally induced, modestly impaired renal function.
- Analyze the impact of acute changes in GFR on vascular health.
Main Results:
- Data from kidney donor studies are expected to clarify the direct impact of reduced GFR on ED.
- This model allows for the isolation of the effect of renal function on vascular health, independent of common comorbidities.
- Findings will help determine if targeting ED or the renal disease itself is more effective in reducing CV risk.
Conclusions:
- Living kidney donors offer a unique model to study the direct relationship between CKD and CVD pathophysiology.
- Understanding the direct impact of GFR on ED is crucial for developing effective strategies to mitigate cardiovascular risk in CKD patients.
- This research could guide therapeutic interventions towards either managing renal disease or directly addressing endothelial dysfunction to improve cardiovascular outcomes.
Abstract:
Chronic kidney disease (CKD) is strongly associated with cardiovascular disease (CVD); a graded inverse relationship between estimated glomerular filtration rate (eGFR) and cardiovascular event rates has emerged from large-scale observational studies. Chronic kidney disease is also associated with endothelial dysfunction (ED) although the precise relationship with GFR and the "threshold" at which ED begins are contentious. Abnormal endothelial function is certainly present in late-stage CKD but data in early-stage CKD appear confounded by disease states such as diabetes and hypertension which themselves promote ED. Thus, the direct effect of a reduction in GFR on endothelial function and, therefore, cardiovascular (CV) risk is far from completely established. In human studies, the precise duration of kidney impairment is seldom known and the onset of CVD often insidious, making it difficult to determine exactly when CVD first appears in the context of CKD. Kidney donors provide a near-ideal experimental model of CKD; subjects undergo an acute change from normal to modestly impaired renal function at the time of nephrectomy and lack the confounding co-morbidity that has made observational studies of CKD patients so challenging to interpret. By examining changes in endothelial function in living kidney donors before and after nephrectomy, useful insight might be gained into the pathophysiology of CVD in CKD and help determine whether targeting ED or the renal disease itself has the potential to reduce CV risk.
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01:24Chronic Kidney Disease II: Clinical Manifestations
01:28Diabetic Nephropathy
01:28Chronic Kidney Disease III: Interprofessional Care
01:18Chronic Kidney Disease IV: Nursing Management
01:29Acute Kidney Injury II: Pathophysiology