TY - JOUR
T1 - Glucagon-like peptide-1 (GLP-1)
T2 - effect on kidney hemodynamics and renin-angiotensin-aldosterone system in healthy men
AU - Skov, Jeppe
AU - Dejgaard, Anders
AU - Frøkiær, Jørgen
AU - Holst, Jens Juul
AU - Jonassen, Thomas
AU - Rittig, Søren
AU - Christiansen, Jens Sandahl
PY - 2013/4
Y1 - 2013/4
N2 - Introduction: Glucagon-like peptide-1 (GLP-1) is an incretin hormone with multiple actions in addition to control of glucose homeostasis. GLP-1 is known to cause natriuresis in humans, but the effects on basic renal physiology are still partly unknown. Subjects and Methods: Twelve healthy young males were examined in a randomized, controlled, double-blinded, single-day, crossover trial to evaluate the effects of 2 hours GLP-1 infusion on kidney functions. Glomerular filtration rate (GFR) and renal plasma flow (RPF) were assessed with 51Cr-EDTA and 123I-hippuran, respectively, using a constant infusion renal clearance technique based on timed urine sampling. Results: GLP-1 had no significant effect on either GFR [+ 1.9%, 95% confidence interval (-0.8; 4.6%)] or RPF [+2.4%, 95% confidence interval (-3.6; 8.8%)]. Fractional urine excretion of lithium increased 9% (P = .013) and renal sodium clearance increased 40% (P = .007). Angiotensin II decreased 19% (P = .003), whereas renin, aldosterone, and the urinary excretion of angiotensinogen showed no significant changes. GLP-1 did not affect blood pressure but induced a small transient increase in heart rate. Conclusion: The results indicate that although GLP-1 markedly reduces proximal tubule sodium reabsorption, the acute effects on GFR and RPF are very limited in healthy humans. The finding of GLP-1's ability to reduce angiotensin II concentration is novel and should be further elucidated.
AB - Introduction: Glucagon-like peptide-1 (GLP-1) is an incretin hormone with multiple actions in addition to control of glucose homeostasis. GLP-1 is known to cause natriuresis in humans, but the effects on basic renal physiology are still partly unknown. Subjects and Methods: Twelve healthy young males were examined in a randomized, controlled, double-blinded, single-day, crossover trial to evaluate the effects of 2 hours GLP-1 infusion on kidney functions. Glomerular filtration rate (GFR) and renal plasma flow (RPF) were assessed with 51Cr-EDTA and 123I-hippuran, respectively, using a constant infusion renal clearance technique based on timed urine sampling. Results: GLP-1 had no significant effect on either GFR [+ 1.9%, 95% confidence interval (-0.8; 4.6%)] or RPF [+2.4%, 95% confidence interval (-3.6; 8.8%)]. Fractional urine excretion of lithium increased 9% (P = .013) and renal sodium clearance increased 40% (P = .007). Angiotensin II decreased 19% (P = .003), whereas renin, aldosterone, and the urinary excretion of angiotensinogen showed no significant changes. GLP-1 did not affect blood pressure but induced a small transient increase in heart rate. Conclusion: The results indicate that although GLP-1 markedly reduces proximal tubule sodium reabsorption, the acute effects on GFR and RPF are very limited in healthy humans. The finding of GLP-1's ability to reduce angiotensin II concentration is novel and should be further elucidated.
U2 - 10.1210/jc.2012-3855
DO - 10.1210/jc.2012-3855
M3 - Journal article
C2 - 23463656
SN - 0021-972X
VL - 98
SP - E664-71
JO - Journal of Clinical Endocrinology and Metabolism
JF - Journal of Clinical Endocrinology and Metabolism
IS - 4
ER -