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Impact of Renal Denervation on Urinary Peptide-Based Biomarkers in Hypertension.

Hypertension 2024 April 5
BACKGROUND: Catheter-based renal denervation (RDN) reduces blood pressure in hypertension. Urinary peptides are associated with cardiovascular and renal disease and provide prognostic information. We aimed to investigate the effect of RDN on urinary peptide-based biomarker panels associated with chronic kidney and heart disease and to identify urinary peptides affected by RDN.

METHODS: This single-arm, single-center study included patients undergoing catheter-based RDN. Urine samples were collected before and 24 months after RDN and were analyzed using capillary electrophoresis coupled with mass spectrometry. Predefined urinary peptide-based biomarker panels for chronic kidney disease (CKD273), coronary artery disease (CAD238), and heart failure (HF1) were calculated.

RESULTS: This study included 48 patients (33% female) with uncontrolled hypertension. At 24 months after RDN, systolic blood pressure (165±17 versus 148±20 mm Hg; P <0.0001), diastolic blood pressure (90±17 versus 81±13 mm Hg; P <0.0001), and mean arterial pressure (115±15 versus 103±13 mm Hg; P <0.0001) decreased significantly. A total of 103 urinary peptides from 37 different proteins, mostly collagens, altered following RDN. CAD238, a 238 coronary artery-specific polypeptide pattern, significantly improved following RDN (Cohen's d , -0.632; P =0.0001). The classification scores of HF1 ( P =0.8295) and CKD273 ( P =0.6293) did not change significantly.

CONCLUSIONS: RDN beneficially affected urinary peptides associated with coronary artery disease.

REGISTRATION: URL: https://www.clinicaltrials.gov; Unique identifier: NCT01888315.

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