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Changes in plasma endothelin-1 levels reflect clinical response to beta-blockade in chronic heart failure.

Abstract：

:Plasma levels of endothelin-1 are elevated in patients with chronic heart failure; however, it is unknown whether changes in plasma endothelin-1 levels accurately reflect clinical response to therapy in these patients. To determine this, we measured plasma endothelin-1 in addition to functional, hemodynamic, and other neurohormonal parameters as part of a double-blind, placebo-controlled study of the beta-blocker vasodilator carvedilol in patients with moderate to severe chronic heart failure. Patients were assigned (2:1 randomization) to receive carvedilol (25 mg twice daily, n = 10) or placebo (n = 5) for 14 weeks, with evaluations made before and after therapy. Compared to patients receiving placebo, patients receiving carvedilol improved significantly as assessed by the parameters described. These changes were paralleled by significant falls in endothelin-1 with carvedilol (-2.1 + 3.8 pg/ml) in comparison to placebo (2.2 + 3.9 pg/ml; p < 0.05 for between-group differences). Changes in endothelin-1 after treatment in both groups correlated significantly with changes in symptom severity, New York Heart Association class, 6-minute walk distance (r = 0.64 to 0.80; p < 0.05), hemodynamic parameters (ejection fraction, right atrial pressure, pulmonary artery diastolic pressure, pulmonary wedge pressure, right atrial pressure, and stroke volume index; r = 0.54 to 0.86; p < 0.05), and neurohormonal parameters (serum aldosterone and plasma norepinephrine (r = 0.74 to 0.76; p < 0.05). By stepwise regression analysis, change in endothelin-1 was an independent, noninvasive predictor of functional and hemodynamic responses to therapy in these patients. These findings suggest that endothelin-1 accurately reflects functional, hemodynamic, and neurohormonal responses to beta-blocker therapy in patients with congestive heart failure. Measurement of endothelin-1 may therefore be a useful, noninvasive approach to the evaluation of clinical response to drug therapy in these patients.

journal_name

Am Heart J

journal_title

American heart journal

authors

Krum H,Gu A,Wilshire-Clement M,Sackner-Bernstein J,Goldsmith R,Medina N,Yushak M,Miller M,Packer M

doi

10.1016/s0002-8703(96)90363-4

subject

Has Abstract

pub_date

1996-02-01 00:00:00

pages

337-41

issue

2

eissn

0002-8703

issn

1097-6744

pii

S0002-8703(96)90363-4

journal_volume

131

pub_type

临床试验,杂志文章,随机对照试验

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