This Article Abstract Full Text (PDF) Correction (v106,p1743) All Versions of this Article: 105/11/1348    most recent hc1102.105264v1 Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Request Permissions Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Gottlieb, S. S. Articles by Abraham, W. T. Search for Related Content PubMed PubMed Citation Articles by Gottlieb, S. S. Articles by Abraham, W. T. Related Collections Congestive Receptor pharmacology

(Circulation. 2002;105:1348.)
© 2002 American Heart Association, Inc.

Clinical Investigation and Reports

BG9719 (CVT-124), an A₁ Adenosine Receptor Antagonist, Protects Against the Decline in Renal Function Observed With Diuretic Therapy

Stephen S. Gottlieb, MD; D. Craig Brater, MD; Ignatius Thomas, MD; Edward Havranek, MD; Robert Bourge, MD; Steven Goldman, MD; Farere Dyer, MD; Miguel Gomez, MD; Donald Bennett; Barry Ticho, MD, PhD; Evan Beckman, MD; William T. Abraham, MD

From the University of Maryland School of Medicine and the D.V.A. Medical Center (S.S.G.), Baltimore, Md; Indiana School of Medicine (D.C.B.), Indianapolis, Ind; Medical Research Institute (I.T.), Slidell, La; Denver Health Medical Center (E.H.), Denver, Colo; University of Alabama (R.B.), Birmingham, Ala; Tucson VAMC, SAVAHCS, University of Arizona (S.G.), Tucson, Ariz; New Orleans Clinical Trials Management (F.D., M.G.), Covington, La; Biogen Inc (D.B., B.T., E.B.), Cambridge, Mass; and University of Cincinnati College of Medicine (W.T.A.), Cincinnati, Ohio. Dr Abraham is now at University of Kentucky College of Medicine, Lexington, Ky.

Correspondence to Stephen S. Gottlieb, MD, Division of Cardiology, University of Maryland School of Medicine, 22 South Greene St, Baltimore, MD 21201. E-mail sgottlie{at}medicine.umaryland.edu

	Abstract

Top Abstract Introduction Methods Results Discussion References

 
Background— Adenosine may adversely affect renal function via its effects on renal arterioles and tubuloglomerular feedback, but effects of adenosine blockade in humans receiving furosemide and ACE inhibitors is unknown.

Methods and Results— This was a randomized, double-blind, ascending-dose, crossover study evaluating 3 doses of BG9719 in 63 patients with congestive heart failure. Patients received placebo or 1 of 3 doses of BG9719 on 1 day and the same medication plus furosemide on a separate day. Renal function and electrolyte and water excretion were assessed. BG9719 alone caused an increase in urine output and sodium excretion (P<0.05). Although administration of furosemide alone caused a large diuresis, addition of BG9719 to furosemide increased diuresis, which was significant at the 0.75-µg/mL concentration. BG9719 alone improved glomerular filtration rate (GFR) at the 2 lower doses. Furosemide alone caused a decline in GFR. When BG9719 was added to furosemide, however, creatinine clearance remained at baseline at the 2 lower doses.

Conclusions— In patients with congestive heart failure on standard therapy, including ACE inhibitors, BG9719 increased both urine output and GFR. In these same patients, furosemide increased urine output at the expense of decreased GFR. When BG9719 was given in addition to furosemide, urine volume additionally increased and there was no deterioration in GFR. A₁ adenosine antagonism might preserve renal function while simultaneously promoting natriuresis during treatment for heart failure.

Key Words: adenosine antagonist • renal function • congestive heart failure • diuretics

	Introduction

Top Abstract Introduction Methods Results Discussion References

 
Renal function is exceedingly important in patients with chronic congestive heart failure. Although it has long been known that good fluid balance is essential for symptomatic control of heart failure, recent studies have demonstrated that worsening renal function is associated with poorer clinical outcome among hospitalized patients with heart failure.¹ Indeed, renal function is one of the most important determinants of survival in patients with heart failure.² Furthermore, renal impairment is an important cause of suboptimal prescription of medications known to be beneficial, such as diuretics and ACE inhibitors.

Renal function can be modulated by extracellular levels of adenosine acting on specific cell-surface receptors. Adenosine binding to receptors on the afferent arteriole causes local constriction, thereby reducing renal blood flow. Stimulation of A₁ adenosine receptors also increases sodium reabsorption in the proximal and distal tubules. An acute increase in the delivery of sodium in the distal tubule causes an increase in adenosine concentrations, which reduces glomerular filtration rate (GFR) via tubuloglomerular feedback at the macula densa and afferent arterioles. Antagonism of A₁ adenosine receptors therefore maintains renal function by vasodilation of the afferent arteriole and disruption of the tubuloglomerular feedback loop while causing natriuresis.

BG9719 is a selective A₁ adenosine receptor antagonist with the potential to improve renal function in patients with heart failure. In animal studies, BG9719 has caused a potassium neutral diuresis while maintaining renal function.³ Prior human studies have also suggested that it promotes diuresis while maintaining glomerular function.⁴ However, there have been no previous evaluations in humans of the effects of A₁ antagonism in combination with standard heart failure therapy that includes furosemide and ACE inhibitors.

The purpose of the present study was to compare the effects of BG9719 alone, furosemide alone, and BG9719 in combination with furosemide in patients with congestive heart failure. We evaluated renal function, urine volume, and urinary electrolyte excretion.

	Methods

Top Abstract Introduction Methods Results Discussion References

 
This was a randomized, double-blind, crossover study evaluating 3 doses of BG9719 and placebo (Figure 1). The study compared the renal actions of BG9719 (or placebo) alone and in combination with 80 mg of intravenous furosemide in 63 edematous patients with symptomatic heart failure. The study enrolled patients at 8 clinical sites over 14 months. Inclusion criteria included New York Heart Association class II through IV heart failure with an ejection fraction 40% and the presence of edema despite a daily furosemide dose of at least 80 mg. All patients were taking ACE inhibitors. Two patients were receiving spironolactone. Baseline GFR, as measured by creatinine clearance, was at least 30 mL/min per 1.73 m² or serum creatinine was <1.9 mg/dL. The study protocol was approved by all participating institutional review boards, and all patients gave written informed consent for participation in this study.

View larger version (42K): [in this window] [in a new window]   Figure 1. The study design is depicted. After equilibration and baseline measurements, all patients received BG9719 (in 3 ascending doses) or placebo. The same dose was given both with and without furosemide on different days in random order.

Patients were enrolled into 1 of 3 dosing cohorts of ascending doses of BG9719. Within each cohort, patients were randomized to receive either active investigational drug (BG9719) or placebo (Figure 1). After an equilibration period, baseline urine was collected for urine volume, electrolyte determinations, and creatinine clearance. On the following day, subjects received investigational drug (BG9719 or placebo) and either a bolus of intravenous furosemide or placebo. On the second dosing day after another equilibration period, the patient received the same dose of investigational drug but with placebo if furosemide had previously been given or with furosemide if placebo had previously been given. Thus, the effect of adding furosemide to BG9719 could be compared within the same patients, but the effect of different doses of BG9719 was compared across different patient groups. Seventy-nine patients were enrolled in the study. Of these, 8 patients were withdrawn from the study before study drug dosing because of unstable weight (n=3), adverse events (n=2), voluntary withdrawal (n=2), or laboratory abnormality (n=1). Eight other patients were not evaluated because of weight that did not meet the prespecified criteria (n=5), incomplete data collection (n=2), or incorrect dosing (n=1).

All patients were confined to an inpatient study unit for the duration of the study. The equilibration diet was a tightly controlled 30 mEq sodium, 60 mEq potassium, 1.0 to 1.5 g/kg protein diet. Patients continued to take ACE inhibitors, but no diuretics, during the equilibration period of 3 to 5 days. Nevertheless, their weight had to be stable to be dosed. The 2 study dates were separated by 2 to 5 days, during which time sodium could be replaced (if necessary) with intravenous saline to maintain constant total body fluid volume and stable body weight. The saline was given to make the patient as similar as possible on the 2 dosing days, and thus we believe was unlikely to influence the results.

The doses of BG9719 used were designed to yield serum concentrations of 0.1, 0.75, or 2.5 µg/mL. A loading dose was given followed by a 7-hour infusion. The doses given resulted in average serum concentrations during the infusion of 0.101, 0.787, and 3.19 µg/mL, respectively. Dose escalation occurred after 15 patients safely completed treatment at the previous concentration.

Renal Function
Urine was collected to determine urine volume, electrolyte excretion, and creatinine clearance on the day before the first dosing day and on both dosing days. Patients were instructed to urinate after the following time intervals with respect to dosing: 0 to 1, 1 to 2, 2 to 4, 4 to 6, and 6 to 8 hours; a Foley catheter was used in 3 patients. The data presented are cumulative for the first 8 hours after drug administration. Because of creatinine washout, creatinine clearance was measured during the 7 hours of the infusion. Creatinine clearance was determined from serum creatinine and urinary creatinine excretion and adjusted for body surface area. Serum creatinine was measured at each urine collection.

Statistics
Analysis of dose effects was based on mixed-effect ANOVA and ANCOVA. Two-sided tests were used with statistical significance at P0.05. Multiple covariates were considered, including baseline renal function, severity of heart failure, and demographic information.

Response variables were calculated as change from baseline measurements during the same time interval on the predosing day.

	Results

Top Abstract Introduction Methods Results Discussion References

 
Patient Population
The patients in this study reflect a typical heart failure study population (Table 1). The patients were elderly, predominantly male, and racially mixed. Patients receiving placebo were slightly younger, although this was not statistically significant. 33% of patients were classified as NYHA class II and 65% as class III. One patient was class IV. Mean ejection fraction was 28±7%. Forty-three percent of the patients had diabetes mellitus, and 57% had ischemic heart disease.

View this table: [in this window] [in a new window]   Table 1. Baseline Characteristics by Randomization Group

Mean baseline urine volume (before any intervention) was 758 mL for 8 hours. Sodium excretion was 20.3 mEq for this time. Creatinine clearance for 1 to 8 hours was 87.5±43 mL/min per 1.73 m². Although the mean baseline creatinine clearance was higher in patients who received placebo, this was not statistically significant.

Urine Output and Sodium Excretion
The urine output during the infusion of BG9719 (or placebo), with or without furosemide bolus, is shown in Figure 2. BG9719 caused a statistically significant dose-dependent increase in urine output and sodium excretion, with no additional effect of the 2.5 µg/mL concentration compared with the 0.75 µg/mL concentration. Both the trend and the 2 higher doses were significant (P<0.05). Furosemide alone caused a large diuresis. The addition of BG9719 caused an additional increase, which was significant at the 0.75 µg/mL concentration.

View larger version (15K): [in this window] [in a new window]   Figure 2. The urine volume for 8 hours after BG9719 bolus and subsequent infusion, with and without 80 mg furosemide. Placebo and 3 doses are depicted. BG9719 increased urine volume both alone and in combination with furosemide. *P<0.05 compared with placebo.

Creatinine Clearance
BG9719, when given without furosemide, tended to improve GFR at the 2 lower doses, with a P value of 0.055 at the 0.75-µg/mL concentration (Figure 3). Furosemide alone caused a significant decline in GFR. When BG9719 was added to furosemide, however, creatinine clearance remained at baseline at the 2 lower doses. BG9719 at 2.5 µg/mL did not prevent the decline in creatinine clearance associated with furosemide.

View larger version (15K): [in this window] [in a new window]   Figure 3. Percent change from the baseline day of creatinine clearance for 8 hours after BG9719 bolus and subsequent infusion with and without 80 mg furosemide. BG9719 led to increased creatinine clearance at the 2 lower doses when given alone. In combination with furosemide, creatinine clearance was maintained at the 2 lower doses compared with furosemide alone and the 2.5-µg/mL concentration. *P=0.055 compared with baseline, **P<0.05 compared with baseline.

The relationship between change in urine volume and change in creatinine clearance is shown in Figure 4 for patients receiving the 0.75-µg/mL concentration. BG9719 increased both urine output and GFR compared with placebo. Furosemide increased urine output at the expense of decreased GFR. When BG9719 was given in addition to furosemide, urine volume additionally increased, and there was no deterioration in GFR seen.

View larger version (16K): [in this window] [in a new window]   Figure 4. The relationship between change in urine volume and change in creatinine clearance for patients receiving the 0.75-µg/mL concentration. BG9719 increased urine output when given with or without furosemide. The decrease in GFR with furosemide alone was not seen when BG9719 was given.

Adjustment for covariates such as age, gender, race, weight, underlying disease, creatinine clearance, and renal output did not significantly affect the results.

Electrolyte Excretion
Potassium and sodium excretion is shown in Table 2. Alone, BG9719 did not significantly increase potassium excretion despite increasing sodium excretion. In combination with furosemide, sodium excretion increased, as did potassium excretion. Magnesium and uric acid excretion are also shown in Table 2.

View this table: [in this window] [in a new window]   Table 2. Electrolyte Excretion With BG9719, With and Without Furosemide

Blood Pressure and Heart Rate
The baseline blood pressure and heart rate and the change in these parameters from pretreatment are shown in Table 3. After 3.5 hours, heart rate (as determined by electrocardiography) did not change significantly in any group. When furosemide was not given, systolic blood pressure was minimally changed in the placebo and BG9791 0.1 and 0.75 groups; it was slightly increased in the BG9719 2.5 group. The group treated with furosemide alone had a small reduction in blood pressure at 4 hours; there was no additional reduction when furosemide was combined with BG9719 at any of the 3 dose levels. Overall, there were no significant differences in the degree of change in systolic blood pressure among the treatment groups.

View this table: [in this window] [in a new window]   Table 3. Hemodynamics With BG9719, With and Without Furosemide

	Discussion

Top Abstract Introduction Methods Results Discussion References

 
This is the first study to evaluate the combination of an A₁ adenosine receptor antagonist and furosemide in humans. In this study, BG9719 increased urine output and sodium excretion when given without a diuretic in patients with heart failure receiving ACE inhibitors, confirming the diuretic effect of adenosine A₁ receptor antagonism. It also increased urine output when given in addition to furosemide. Although furosemide alone caused a decline in creatinine clearance, when furosemide was given in addition to the 2 lower doses of BG9719, creatinine clearance was maintained in the presence of an effective diuresis. These results suggest that BG9719 might prevent deterioration in renal function while increasing urine output during standard heart failure therapy. Moreover, A₁ receptor antagonism may protect against the commonly observed decline in glomerular filtration associated with the use of loop diuretics.

Possible Mechanism of Action
Adenosine acts on 2 different receptor subtypes in the kidney (the A₁ and A₂ receptors).⁵ A₂ receptor stimulation increases medullary blood flow and would be expected to improve renal function. However, the A₁ receptor seems to predominate in the kidney. Adenosine (via stimulation of the A₁ receptor) may directly decrease glomerular filtration by dilatation of postglomerular vessels⁶ or vasoconstriction before the glomerulus.⁷ The A₁ receptor seems to be the mediator of tubuloglomerular feedback, the macula densa mechanism by which increased sodium concentration in the proximal tubule leads to decreased glomerular filtration.⁸ A₁ receptor blockade could therefore inhibit tubuloglomerular feedback and dilate afferent arterioles, leading to improved glomerular filtration.

Selective A₁ receptor blockade has also demonstrated a physiological role for adenosine in the control of tubular function.⁹ A₁ adenosine receptor blockade seems to directly impact the proximal and distal tubules, increasing Na⁺ excretion.¹⁰ At the distal tubule, this could lead to a potassium-neutral natriuresis, as was demonstrated in this study. It is thus not surprising that xanthines, which also antagonize adenosine, cause diuresis.¹¹ The highly specific A₁ receptor antagonist BG9719 also has been shown to increase natriuresis and diuresis.¹² Effects on tubuloglomerular feedback and the proximal and distal tubules could therefore explain the diuretic and natriuretic observations of the present study.

It is unlikely that differences in hemodynamics could explain the differences in renal function that were observed between the treatment groups, because no significant changes were noted in heart rate or blood pressure between the groups (Table 3). Prior studies in patients with heart failure treated with BG9719 demonstrated only minor changes in heart rate and blood pressure (unpublished results). Healthy subjects also demonstrated no significant changes in pulse or blood pressure when treated with BG9719. Animal studies with selective A₁ adenosine antagonists did not show an effect on heart rate or blood pressure in dogs.¹⁰ Additional support for the lack of hemodynamic effect comes from animal studies in which arterial blood pressure and heart rates were indistinguishable between A₁ adenosine receptor-deficient mice and normal controls.¹³

Prior Studies in Heart Failure
Plasma adenosine levels are elevated in patients with heart failure, implying that adenosine antagonism might have physiological or pathologic importance in these patients.¹⁴ A prior study of the effects of BG9719 in patients with heart failure suggested potential beneficial effects of A₁ receptor blockade.⁴ BG9719 caused a mild diuresis without decreasing glomerular filtration. In contrast, furosemide produced a marked decrease in glomerular filtration. While interpretation of this previous study was limited by differences in the extent of diuresis between the treatment groups, it did raise hope that BG9719 might preserve renal function in the setting of diuresis.

Most studies evaluating the renal effects of furosemide have demonstrated decreased glomerular function.^15–18 These effects may be mediated by adenosine release in the kidney. The marked furosemide-induced decrease in creatinine clearance in the present study is consistent with the clinical observation that diuresis may be limited by worsening renal function. Considering the known adverse prognostic importance of an increased serum creatinine in the hospital,¹ an intervention that might permit diuresis while maintaining renal function could conceivably have a favorable impact on patients hospitalized for heart failure.

Concentration of 2.5 µg
Creatinine clearance was not maintained when BG9719 at a concentration of 2.5 µg/mL was given in addition to furosemide. It is unclear why no benefit was seen at this concentration when GFR improved with the 2 lower doses. It is possible that the contrasting results are secondary to additional pharmacological activity of the high dose or to cross-reactivity of BG9719 to another receptor system. Interestingly, when BG9719 was given alone, creatinine clearance did not increase as much with the higher dose as it did with the lower doses. This additionally supports the idea of varying effects at different doses.

Limitations
This study is a preliminary evaluation of BG9719, having evaluated a limited number of patients. Thus, it is possible that the dose-related findings of the present study were attributable to the relatively small size of the study. It is also possible that the baseline differences (although not statistically different) impacted comparisons of placebo and the different doses of BG9719. There may have been differences in patient characteristics leading to divergent results. Indeed, the placebo group tended to have better baseline renal function. However, this baseline difference would not explain the high-dose observations, because baseline creatinine clearance was similar in all 3 groups that received active drug. Baseline differences also cannot explain the intragroup effects noted when the actions of BG9719 in addition to furosemide were compared with the furosemide-only dosing.

Because this study was performed in stable patients, at this time one must be cautious in extrapolating the findings to unstable patients. Nevertheless, patients in this study did have evidence of fluid overload (edema, dyspnea), even if they did not have an acute change in their clinical status. Although patients in this study were more stable than patients with decompensated heart failure, there is no reason to believe that the renal physiology should differ greatly between these 2 groups.

Conclusion
Combining the A₁ adenosine receptor antagonist BG9719 (at 0.1 and 0.75 µg/mL) with standard diuretic therapy may increase renal output while protecting renal function. The present study suggests that treatment with an A₁ adenosine receptor antagonist may be useful in the therapy of congestive heart failure. Additional investigation of this mechanism might lead to novel approaches to the treatment of patients with renal dysfunction associated with diuresis and heart failure.

	Acknowledgments

 
This study was supported by a grant from Biogen Inc, Cambridge, Mass.

Received November 29, 2001; revision received January 2, 2002; accepted January 4, 2002.

	References

Top Abstract Introduction Methods Results Discussion References

 
1. Krumholz HM, Chen YT, Vaccarino V, et al. Correlates and impact on outcomes of worsening renal function in patients 65 years of age with heart failure. Am J Cardiol. 2000; 85: 1110–1113.[CrossRef][Medline] [Order article via Infotrieve]

2. Hillege HL, Girbes ARJ, de Kam PJ, et al. Renal function, neurohormonal activation, and survival in patients with chronic heart failure. Circulation. 2000; 102: 203–210.[Abstract/Free Full Text]

3. Gellai M, Schreiner GF, Ruffolo RR Jr, et al. CVT-124, a novel adenosine A₁ receptor antagonist with unique diuretic activity. J Pharmacol Exp Ther. 1998; 286: 1191–1196.[Abstract/Free Full Text]

4. Gottlieb SS, Skettino SL, Wolff A, et al. Effects of BG9719 (CVT-124), an A₁-adenosine receptor antagonist, and furosemide on glomerular filtration rate and natriuresis in patients with congestive heart failure. J Am Coll Cardiol. 2000; 35: 56–59.[Abstract/Free Full Text]

5. Balakrishnan VS, Coles GA, Williams JD. Effects of intravenous adenosine on renal function in healthy human subjects. Am J Physiol. 1996; 40: F374–F381.

6. Edlund A, Ohlsen H, Sollevi A. Renal effects of local infusion of adenosine in man. Clin Sci. 1994; 87: 143–149.[Medline] [Order article via Infotrieve]

7. Marraccini P, Fedele S, Marzilli M, et al. Adenosine-induced renal vasoconstriction in man. Cardiovasc Res. 1996; 32: 949–953.[CrossRef][Medline] [Order article via Infotrieve]

8. Schnermann J. Juxtaglomerular cell complex in the regulation of renal salt excretion. Am J Physiol Reg Integr Comp Physiol. 1998; 274: R263–R279.[Abstract/Free Full Text]

9. Kuan CJ, Herzer WA, Jackson EK. Cardiovascular and renal effects of blocking A₁ adenosine receptors. J Cardiovasc Pharmacol. 1993; 21: 822–828.[Medline] [Order article via Infotrieve]

10. Yamagata T, Kobayashi T, Kusaka H, et al. Diuretic effect of KW 3902, a novel adenosine A₁-receptor antagonist, in anesthetized dogs. Biol Pharm Bull. 1994; 17: 1599–1603.[Medline] [Order article via Infotrieve]

11. Collis MG, Baxter GS, Keddie JR. The adenosine receptor antagonist, 8-phenyltheophylline, causes diuresis and saliuresis in the rat. J Pharm Pharmacol. 1986; 11: 850–852.

12. Wilcox CS, Welch WJ, Schreiner GF, et al. Natriuretic and diuretic actions of a highly selective adenosine A₁ receptor antagonist. J Am Soc Nephrol. 1999; 10: 714–720.[Abstract/Free Full Text]

13. Sun D, Samuelson LC, Yang T, et al. Mediation of tubuloglomerular feedback by adenosine: evidence from mice lacking adenosine 1 receptors. Proc Natl Acad Sci U S A. 2001; 98: 9983–9988.[Abstract/Free Full Text]

14. Funaya H, Kitakaze M, Node K, et al. Plasma adenosine levels increase in patients with chronic heart failure. Circulation. 1997; 95: 1363–1365.[Abstract/Free Full Text]

15. Tenstad O, Williamson HE. Effect of furosemide on local and zonal glomerular filtration rate in the rat kidney. Acta Physiol Scand. 1995; 155: 99–107.[Medline] [Order article via Infotrieve]

16. Lunau HE, Bak M, Peterson JS, et al. Renal adaptations to continuous administration of furosemide and bendroflumethiazide in rats. Pharmacol Toxicol. 1994; 74: 216–222.[Medline] [Order article via Infotrieve]

17. Smith FG, Abraham J. Renal and renin responses to furosemide in conscious lambs during postnatal maturation. Can J Physiol Pharmacol. 1995; 73: 107–112.[Medline] [Order article via Infotrieve]

18. Skott P, Hommel E, Bruun NE, et al. The acute effect of acetazolamide on glomerular filtration rate and proximal tubular reabsorption of sodium and water in normal man. Scand J Clin Lab Invest. 1989; 49: 583–587.[Medline] [Order article via Infotrieve]

This article has been cited by other articles:

				A. Mebazaa, P. S. Pang, M. Tavares, S. P. Collins, A. B. Storrow, S. Laribi, S. Andre, D. M. Courtney, J. Hasa, J. Spinar, et al. The impact of early standard therapy on dyspnoea in patients with acute heart failure: the URGENT-dyspnoea study Eur. Heart J., November 11, 2009; (2009) ehp458v1. [Abstract] [Full Text] [PDF]

				V. Mitrovic, P. Seferovic, S. Dodic, M. Krotin, A. Neskovic, K. Dickstein, H. de Voogd, C. Bocker, D. Ziegler, M. Godes, et al. Cardio-Renal Effects of the A1 Adenosine Receptor Antagonist SLV320 in Patients With Heart Failure Circ Heart Fail, November 1, 2009; 2(6): 523 - 531. [Abstract] [Full Text] [PDF]

				A Kazory and E A Ross Ultrafiltration for decompensated heart failure: renal implications Heart, July 1, 2009; 95(13): 1047 - 1051. [Abstract] [Full Text] [PDF]

				M. Gheorghiade and P. S. Pang Acute heart failure syndromes. J. Am. Coll. Cardiol., February 17, 2009; 53(7): 557 - 573. [Abstract] [Full Text] [PDF]

				G. M. Felker, C. M. O'Connor, E. Braunwald, and for the Heart Failure Clinical Research Network In Loop Diuretics in Acute Decompensated Heart Failure: Necessary? Evil? A Necessary Evil? Circ Heart Fail, January 1, 2009; 2(1): 56 - 62. [Full Text] [PDF]

				C. Ronco, M. Haapio, A. A. House, N. Anavekar, and R. Bellomo Cardiorenal Syndrome J. Am. Coll. Cardiol., November 4, 2008; 52(19): 1527 - 1539. [Abstract] [Full Text] [PDF]

				A. Ryan, D. A. Rosen, and J. D. Tobias Preliminary Experience With Nesiritide in Pediatric Patients Less Than 12 Months of Age J Intensive Care Med, September 1, 2008; 23(5): 321 - 328. [Abstract] [PDF]

				V. Vallon, C. Miracle, and S. Thomson Adenosine and kidney function: Potential implications in patients with heart failure Eur J Heart Fail, February 1, 2008; 10(2): 176 - 187. [Abstract] [Full Text] [PDF]

				L. De Luca, A. Mebazaa, G. Filippatos, J. T. Parissis, M. Bohm, A. A. Voors, M. Nieminen, F. Zannad, A. Rhodes, A. El-Banayosy, et al. Overview of emerging pharmacologic agents for acute heart failure syndromes Eur J Heart Fail, February 1, 2008; 10(2): 201 - 213. [Abstract] [Full Text] [PDF]

				M. M. Givertz, B. M. Massie, T. K. Fields, L. L. Pearson, H. C. Dittrich, and on behalf of the CKI-201 and CKI-202 Investigators The Effects of KW-3902, an Adenosine A1-Receptor Antagonist,on Diuresis and Renal Function in Patients With Acute Decompensated Heart Failure and Renal Impairment or Diuretic Resistance J. Am. Coll. Cardiol., October 16, 2007; 50(16): 1551 - 1560. [Abstract] [Full Text] [PDF]

				B. Greenberg, I. Thomas, D. Banish, S. Goldman, E. Havranek, B. M. Massie, Y. Zhu, B. Ticho, and W. T. Abraham Effects of Multiple Oral Doses of an A1 Adenosine Antagonist, BG9928, in Patients With Heart Failure: Results of a Placebo-Controlled, Dose-Escalation Study J. Am. Coll. Cardiol., August 14, 2007; 50(7): 600 - 606. [Abstract] [Full Text] [PDF]

				M. Metra, P. Ponikowski, K. Dickstein, J. J.V. McMurray, A. Gavazzi, C.-H. Bergh, A. G. Fraser, T. Jaarsma, A. Pitsis, P. Mohacsi, et al. Advanced chronic heart failure: A position statement from the Study Group on Advanced Heart Failure of the Heart Failure Association of the European Society of Cardiology Eur J Heart Fail, June 1, 2007; 9(6-7): 684 - 694. [Abstract] [Full Text] [PDF]

				M. R. Costanzo, M. E. Guglin, M. T. Saltzberg, M. L. Jessup, B. A. Bart, J. R. Teerlink, B. E. Jaski, J. C. Fang, E. D. Feller, G. J. Haas, et al. Ultrafiltration Versus Intravenous Diuretics for Patients Hospitalized for Acute Decompensated Heart Failure J. Am. Coll. Cardiol., February 13, 2007; 49(6): 675 - 683. [Abstract] [Full Text] [PDF]

				E. M. deGoma, R. H. Vagelos, M. B. Fowler, and E. A. Ashley Emerging Therapies for the Management of Decompensated Heart Failure: From Bench to Bedside J. Am. Coll. Cardiol., November 28, 2006; (2006) j.jacc.2006.08.039v1. [Abstract] [Full Text] [PDF]

				M. S. Nieminen Key issues of European Society of Cardiology guidelines on acute heart failure Eur. Heart J. Suppl., September 1, 2006; 8(suppl_E): E6 - E11. [Abstract] [Full Text] [PDF]

				V. Vallon, B. Muhlbauer, and H. Osswald Adenosine and kidney function. Physiol Rev, July 1, 2006; 86(3): 901 - 940. [Abstract] [Full Text] [PDF]

				X. Zhou and C. K. Kost Jr. Adenosine A1 Receptor Antagonist Blunts Urinary Potassium Excretion, but Not Renal Hemodynamic Effects, Induced by Carbonic Anhydrase Inhibitor in Rats J. Pharmacol. Exp. Ther., February 1, 2006; 316(2): 530 - 538. [Abstract] [Full Text] [PDF]

				L. C. Costello-Boerrigter, W. B. Smith, G. Boerrigter, J. Ouyang, C. A. Zimmer, C. Orlandi, and J. C. Burnett Jr. Vasopressin-2-receptor antagonism augments water excretion without changes in renal hemodynamics or sodium and potassium excretion in human heart failure Am J Physiol Renal Physiol, February 1, 2006; 290(2): F273 - F278. [Abstract] [Full Text] [PDF]

				M. Gheorghiade, F. Zannad, G. Sopko, L. Klein, I. L. Pina, M. A. Konstam, B. M. Massie, E. Roland, S. Targum, S. P. Collins, et al. Acute Heart Failure Syndromes: Current State and Framework for Future Research Circulation, December 20, 2005; 112(25): 3958 - 3968. [Full Text] [PDF]

				M. R. Costanzo, M. Saltzberg, J. O'Sullivan, and P. Sobotka Early Ultrafiltration in Patients With Decompensated Heart Failure and Diuretic Resistance J. Am. Coll. Cardiol., December 6, 2005; 46(11): 2047 - 2051. [Abstract] [Full Text] [PDF]

				S. R. Goldsmith and M. Gheorghiade Vasopressin Antagonism in Heart Failure J. Am. Coll. Cardiol., November 15, 2005; 46(10): 1785 - 1791. [Abstract] [Full Text] [PDF]

				L. W. Stevenson, A. Nohria, and L. Mielniczuk Torrent or Torment From the Tubules?: Challenge of the Cardiorenal Connections J. Am. Coll. Cardiol., June 21, 2005; 45(12): 2004 - 2007. [Full Text] [PDF]

				Endorsed by the European Society of Intensive Care, Authors/Task Force Members, M. S. Nieminen, M. Bohm, M. R. Cowie, H. Drexler, G. S. Filippatos, G. Jondeau, Y. Hasin, J. Lopez-Sendon, et al. Executive summary of the guidelines on the diagnosis and treatment of acute heart failure: The Task Force on Acute Heart Failure of the European Society of Cardiology Eur. Heart J., February 2, 2005; 26(4): 384 - 416. [Full Text] [PDF]

				M. G. Shlipak and B. M. Massie The Clinical Challenge of Cardiorenal Syndrome Circulation, September 21, 2004; 110(12): 1514 - 1517. [Full Text] [PDF]

				R. Chang, W. A. Elatre, and J. T. Heywood Effect of Nesiritide on Length of Hospital Stay in Patients with Decompensated Heart Failure Journal of Cardiovascular Pharmacology and Therapeutics, July 1, 2004; 9(3): 173 - 177. [Abstract] [PDF]

				M. Bak and K. Thomsen Effects of the adenosine A1 receptor inhibitor FK 838 on proximal tubular fluid output in rats Nephrol. Dial. Transplant., May 1, 2004; 19(5): 1077 - 1082. [Abstract] [Full Text] [PDF]

				A. Cataliotti, G. Boerrigter, L. C. Costello-Boerrigter, J. A. Schirger, T. Tsuruda, D. M. Heublein, H. H. Chen, L. S. Malatino, and J. C. Burnett Jr Brain Natriuretic Peptide Enhances Renal Actions of Furosemide and Suppresses Furosemide-Induced Aldosterone Activation in Experimental Heart Failure Circulation, April 6, 2004; 109(13): 1680 - 1685. [Abstract] [Full Text] [PDF]

				J. A. Auchampach, X. Jin, J. Moore, T. C. Wan, L. M. Kreckler, Z.-D. Ge, J. Narayanan, E. Whalley, W. Kiesman, B. Ticho, et al. Comparison of Three Different A1 Adenosine Receptor Antagonists on Infarct Size and Multiple Cycle Ischemic Preconditioning in Anesthetized Dogs J. Pharmacol. Exp. Ther., March 1, 2004; 308(3): 846 - 856. [Abstract] [Full Text] [PDF]

				Y. Liao, S. Takashima, Y. Asano, M. Asakura, A. Ogai, Y. Shintani, T. Minamino, H. Asanuma, S. Sanada, J. Kim, et al. Activation of Adenosine A1 Receptor Attenuates Cardiac Hypertrophy and Prevents Heart Failure in Murine Left Ventricular Pressure-Overload Model Circ. Res., October 17, 2003; 93(8): 759 - 766. [Abstract] [Full Text] [PDF]

				K. H Chee, K. Amudha, N. A Hussain, H. K Haizal, A.-M. J Choy, and C. C Lang Combination of drugs acting on the natriuretic system and the renin-angiotensin system in heart failure Journal of Renin-Angiotensin-Aldosterone System, September 1, 2003; 4(3): 140 - 148. [Abstract] [PDF]

				M. R. Mehra, P. A. Uber, and G. S. Francis Heart failure therapy at a crossroad: are there limits to the neurohormonal model? J. Am. Coll. Cardiol., May 7, 2003; 41(9): 1606 - 1610. [Abstract] [Full Text] [PDF]

				J. McMurray and M. A. Pfeffer New Therapeutic Options in Congestive Heart Failure: Part II Circulation, May 7, 2002; 105(18): 2223 - 2228. [Full Text] [PDF]

This Article Abstract Full Text (PDF) Correction (v106,p1743) All Versions of this Article: 105/11/1348    most recent hc1102.105264v1 Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Request Permissions Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Gottlieb, S. S. Articles by Abraham, W. T. Search for Related Content PubMed PubMed Citation Articles by Gottlieb, S. S. Articles by Abraham, W. T. Related Collections Congestive Receptor pharmacology