Cardiovascular and metabolic effects of 48-h glucagon-like peptide-1 infusion in compensated chronic patients with heart failure

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Mads Halbirk, Helene Nørrelund, Niels Møller, Jens Juul Holst, Ole Schmitz, Bent Roni Ranghøj Nielsen, Jens Erik Nielsen-Kudsk, Søren Steen Nielsen, Torsten Toftegaard Nielsen, Hans Eiskjaer, Hans Erik Bøtker, Henrik Wiggers

The incretin hormone glucagon-like peptide-1 (GLP-1) and its analogs are currently emerging as antidiabetic medications. GLP-1 improves left ventricular ejection fraction (LVEF) in dogs with heart failure (HF) and in patients with acute myocardial infarction. We studied metabolic and cardiovascular effects of 48-h GLP-1 infusions in patients with congestive HF. In a randomized, double-blind crossover design, 20 patients without diabetes and with HF with ischemic heart disease, EF of 30 +/- 2%, New York Heart Association II and III (n = 14 and 6) received 48-h GLP-1 (0.7 and placebo infusion. At 0 and 48 h, LVEF, diastolic function, tissue Doppler regional myocardial function, exercise testing, noninvasive cardiac output, and brain natriuretic peptide (BNP) were measured. Blood pressure, heart rate, and metabolic parameters were recorded. Fifteen patients completed the protocol. GLP-1 increased insulin (90 +/- 17 pmol/l vs. 69 +/- 12 pmol/l; P = 0.025) and lowered glucose levels (5.2 +/- 0.1 mmol/l vs. 5.6 +/- 0.1 mmol/l; P <0.01). Heart rate (67 +/- 2 beats/min vs. 65 +/- 2 beats/min; P = 0.016) and diastolic blood pressure (71 +/- 2 mmHg vs. 68 +/- 2 mmHg; P = 0.008) increased during GLP-1 treatment. Cardiac index (1.5 +/- 0.1 l.min(-1).m(-2) vs. 1.7 +/- 0.2 l.min(-1).m(-2); P = 0.54) and LVEF (30 +/- 2% vs. 30 +/- 2%; P = 0.93), tissue Doppler indexes, body weight, and BNP remained unchanged. Hypoglycemic events related to GLP-1 treatment were observed in eight patients. GLP-1 infusion increased circulating insulin levels and reduced plasma glucose concentration but had no major cardiovascular effects in patients without diabetes but with compensated HF. The impact of minor increases in heart rate and diastolic blood pressure during GLP-1 infusion requires further studies. Hypoglycemia was frequent and calls for caution in patients without diabetes but with HF.
Original languageEnglish
JournalAmerican Journal of Physiology: Heart and Circulatory Physiology
Issue number3
Pages (from-to)H1096-H1102
Publication statusPublished - 1 Mar 2010

    Research areas

  • Adult, Aged, Blood Glucose, Blood Pressure, Cardiac Output, Chronic Disease, Cross-Over Studies, Dose-Response Relationship, Drug, Double-Blind Method, Exercise Tolerance, Female, Glucagon-Like Peptide 1, Heart Failure, Heart Rate, Humans, Hypoglycemic Agents, Infusions, Intravenous, Insulin, Male, Middle Aged, Treatment Outcome

ID: 33940315