Affordable Access

deepdyve-link
Publisher Website

Vascular effects of intravenous intralipid and dextrose infusions in obese subjects.

Authors
  • Gosmanov, Aidar R1
  • Smiley, Dawn D
  • Peng, Limin
  • Siquiera, Joselita
  • Robalino, Gonzalo
  • Newton, Christopher
  • Umpierrez, Guillermo E
  • 1 Department of Medicine, Division of Endocrinology University of Tennessee Health Science Center, Memphis, TN, USA.
Type
Published Article
Journal
Metabolism: clinical and experimental
Publication Date
Oct 01, 2012
Volume
61
Issue
10
Pages
1370–1376
Identifiers
DOI: 10.1016/j.metabol.2012.03.006
PMID: 22483976
Source
Medline
License
Unknown

Abstract

Hyperglycemia and elevated free fatty acids (FFA) are implicated in the development of endothelial dysfunction. Infusion of soy-bean oil-based lipid emulsion (Intralipid®) increases FFA levels and results in elevation of blood pressure (BP) and endothelial dysfunction in obese healthy subjects. The effects of combined hyperglycemia and high FFA on BP, endothelial function and carbohydrate metabolism are not known. Twelve obese healthy subjects received four random, 8-h IV infusions of saline, Intralipid 40 mL/h, Dextrose 10% 40 mL/h, or combined Intralipid and dextrose. Plasma levels of FFA increased by 1.03±0.34 mmol/L (p=0.009) after Intralipid, but FFAs remained unchanged during saline, dextrose, and combined Intralipid and dextrose infusion. Plasma glucose and insulin concentrations significantly increased after dextrose and combined Intralipid and dextrose (all, p<0.05) and were not different from baseline during saline and lipid infusion. Intralipid increased systolic BP by 12±9 mmHg (p<0.001) and diastolic BP by 5±6 mmHg (p=0.022),and decreased flow-mediated dilatation (FMD) from baseline by 3.2%±1.4% (p<0.001). Saline and dextrose infusion had neutral effects on BP and FMD. The co-administration of lipid and dextrose decreased FMD by 2.4%±2.1% (p=0.002) from baseline, but did not significantly increase systolic or diastolic BP. Short-term Intralipid infusion significantly increased FFA and BP; in contrast, FFA and BP were unchanged during combined infusion of Intralipid and dextrose. Combined Intralipid and dextrose infusion resulted in endothelial dysfunction similar to Intralipid alone.

Report this publication

Statistics

Seen <100 times