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Insulin resistance and coronary flow velocity reserve in patients with autosomal dominant polycystic kidney disease

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Background:  Cardiovascular problems are a major cause of morbidity and mortality in patients with autosomal dominant polycystic kidney disease (ADPKD).

Aim:  The aim of this study was to investigate coronary flow velocity reserve (CFVR) as a marker of endothelial dysfunction, carotid intima media thickness (CIMT) as a marker of subclinical organ damage and insulin resistance (IR) as a cardiovascular risk factor in patients with ADPKD.

Methods:  Twenty‐two normotensive ADPKD patients with well‐preserved renal function and 19 healthy subjects were included in the study. Creatinine clearances were calculated by the Cockcroft–Gault formula. The homeostasis model of IR (HOMA‐IR) was used to measure IR. CIMT was measured by high‐resolution vascular ultrasound. CFVR was calculated as the ratio of hyperaemic to baseline diastolic peak velocities by echocardiography.

Results:  There was no significant difference between the two groups regarding age, gender, body mass index, systolic and diastolic blood pressures, cholesterol and triglyceride levels. However, CIMT and HOMA‐IR were significantly increased and CFVR was significantly decreased in patients with ADPKD compared with healthy subjects.

Conclusions:  The findings of decreased CFVR, increased CIMT and increased IR suggest that cardiovascular risk is elevated even in the early stages of ADPKD.
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Document Type: Research Article

Affiliations: 1: Department of Nephrology, Selcuk University Meram School of Medicine, Konya 2: Departments of Geriatrics 3: Internal Medicine 4: Cardiology 5: Goztepe Training Hospital Department of Nephrology, Istanbul, Turkey 6: Nephrology, Istanbul University Istanbul Faculty of Medicine

Publication date: February 1, 2012

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