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Effect of carvedilol on plasma adiponectin concentration in patients with chronic heart failure
Masayuki Yamaji1, Takayoshi Tsutamoto, Toshinari Tanaka
1Cardiovascular and Respiratory Medicine, Shiga University of Medical Science, Otsu, Japan.
Insights
Carvedilol treatment in chronic heart failure (CHF) patients significantly lowered plasma adiponectin levels. This reduction in adiponectin correlated with improved left ventricular ejection fraction (LVEF), suggesting a potential therapeutic benefit.
Area of Science:
- Cardiology
- Endocrinology
- Pharmacology
Background:
- High plasma adiponectin is linked to poor prognosis in chronic heart failure (CHF).
- ACE inhibitors and ARBs may increase adiponectin, but beta-blocker effects are unknown.
Purpose of the Study:
- To investigate the effect of carvedilol on plasma adiponectin in CHF patients.
- To explore the relationship between adiponectin changes and clinical outcomes.
Main Methods:
- 44 CHF patients received carvedilol for 6 months.
- Measurements included hemodynamic parameters, echocardiography, and plasma adiponectin, BNP, and norepinephrine levels.
- Multivariable analyses assessed predictors of adiponectin decrease and its correlation with LVEF improvement.
Main Results:
- Carvedilol significantly decreased plasma adiponectin (15.8 to 11.0 microg/ml, P<0.0001).
- BNP and norepinephrine levels also decreased, while LVEF increased.
- Pre-treatment adiponectin predicted the magnitude of decrease; this decrease correlated with LVEF improvement.
Conclusions:
- Carvedilol reduces plasma adiponectin concentration in CHF patients.
- The observed decrease in adiponectin is associated with improved LVEF post-treatment.
Background:
Patients with a high plasma adiponectin have a poor prognosis in chronic heart failure (CHF). Angiotensin-converting enzyme inhibitors and angiotensin II receptor blockers are reported to increase the plasma adiponectin concentration, but the effect of beta-blockers on plasma adiponectin in patients with CHF remains unknown.
Methods And Results:
Blood samples were collected at before and 6 months after administration of carvedilol in 44 CHF patients. The hemodynamic parameters, echocardiography, plasma concentrations of brain natriuretic peptide (BNP), norepinephrine and adiponectin were measured. Six months after treatment, there were significantly decreased plasma concentrations of adiponectin (15.8 +/-1.4 to 11.0 +/-1.1 microg/ml, P<0.0001), BNP and norepinephrine and increased left ventricular ejection fraction (LVEF). On stepwise multivariable analyses, a higher plasma adiponectin concentration before treatment (rs=-0.561, P<0.0001) was a significant independent predictor of a greater decrease in adiponectin concentration and the decrease in plasma adiponectin concentration was significantly correlated with the improvement of LVEF (r=-0.561, P<0.0001).
Conclusions:
These findings indicate that carvedilol decreases plasma adiponectin concentration and that the decrease in plasma adiponectin is associated with the improvement of LVEF after treatment with carvedilol in CHF patients.
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