PMID- 11011335 OWN - NLM STAT- MEDLINE DCOM- 20001102 LR - 20151119 IS - 1097-6744 (Electronic) IS - 0002-8703 (Linking) VI - 140 IP - 4 DP - 2000 Oct TI - Renal endothelin in heart failure and its relation to sodium excretion. PG - 617-22 AB - BACKGROUND: Recent studies have shown that endothelin-1 (ET-1) antagonists increase sodium excretion and improve renal blood flow in experimental heart failure (HF). However, despite a number of investigations that have reported a significant increase in ET-1 plasma levels in patients with HF, it is still not known whether increased renal synthesis and urinary excretion of ET-1 occur. Our aim was to investigate renal ET-1 formation and its relation to sodium excretion in patients with HF. METHODS: One hundred forty-seven patients with HF, subdivided according to New York Heart Association (NYHA) functional classes, and 28 healthy controls were studied. ET-1 and big ET-1 were measured in plasma and in 24-hour urine by radioimmunoassay. Atrial and brain natriuretic peptide, arginine vasopressin, plasma renin activity, and hemodynamic variables were also investigated. RESULTS: Urinary ET-1 excretion was already increased in NYHA class II patients (P <.001 vs controls), whereas plasma ET-1 increased only in NYHA class III and IV patients (P <.001). In the 71 subjects who were not receiving diuretic treatment, urinary ET-1 was selected as the strongest predictor of sodium excretion by multivariate stepwise analysis. CONCLUSIONS: Urinary ET-1 excretion increases in an earlier phase of HF than plasma ET-1 and appears to be closely correlated with sodium excretion, indicating renal ET-1 is a target for ET-1 antagonists in patients with HF. FAU - Modesti, P A AU - Modesti PA AD - Clinica Medica Generale e Cardiologia, University of Florence, Italy. pamodesti@dfe.unifi.it FAU - Cecioni, I AU - Cecioni I FAU - Costoli, A AU - Costoli A FAU - Poggesi, L AU - Poggesi L FAU - Galanti, G AU - Galanti G FAU - Serneri, G G AU - Serneri GG LA - eng PT - Comparative Study PT - Journal Article PL - United States TA - Am Heart J JT - American heart journal JID - 0370465 RN - 0 (Biomarkers) RN - 0 (Endothelin-1) RN - 113-79-1 (Arginine Vasopressin) RN - 114471-18-0 (Natriuretic Peptide, Brain) RN - 85637-73-6 (Atrial Natriuretic Factor) RN - 9NEZ333N27 (Sodium) RN - EC 3.4.23.15 (Renin) SB - IM MH - Aged MH - Arginine Vasopressin/blood MH - Atrial Natriuretic Factor/blood MH - Biomarkers/blood/urine MH - Circadian Rhythm MH - Disease Progression MH - Endothelin-1/blood/*urine MH - Female MH - Heart Failure/mortality/physiopathology/*urine MH - Hemodynamics/physiology MH - Humans MH - Kidney/*metabolism MH - Male MH - Middle Aged MH - Natriuretic Peptide, Brain/blood MH - Prognosis MH - Radioimmunoassay MH - Renin/blood MH - Severity of Illness Index MH - Sodium/*urine MH - Survival Rate EDAT- 2000/09/30 11:00 MHDA- 2001/02/28 10:01 CRDT- 2000/09/30 11:00 PHST- 2000/09/30 11:00 [pubmed] PHST- 2001/02/28 10:01 [medline] PHST- 2000/09/30 11:00 [entrez] AID - S0002-8703(00)84254-4 [pii] AID - 10.1067/mhj.2000.109917 [doi] PST - ppublish SO - Am Heart J. 2000 Oct;140(4):617-22. doi: 10.1067/mhj.2000.109917.