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Prostacyclin improves glucose utilization in patients with sepsis
T Scheeren1, F Susanto, H Reinauer
1Institut für Klinische Anaesthesiologie, Heinrich-Heine-Universität Düsseldorf, Germany.
Journal of Critical Care
|September 1, 1994
Summary
Prostacyclin (PGI2) improved tissue oxygenation in sepsis patients, leading to increased glucose oxidation. This suggests PGI2 may enhance adenosine triphosphate production by improving glucose metabolism.
Area of Science:
- Critical Care Medicine
- Biochemistry
- Physiology
Background:
- Sepsis commonly causes impaired glucose metabolism and altered microcirculatory blood flow.
- Prostacyclin (PGI2) is known to improve tissue oxygenation by enhancing oxygen delivery (DO2) and oxygen uptake (VO2).
Purpose of the Study:
- To investigate if the oxygenation-improving effects of PGI2 in sepsis patients are associated with enhanced glucose utilization.
- To explore the impact of PGI2 on glucose metabolism in the context of sepsis.
Main Methods:
- Seven sepsis patients received total parenteral nutrition with glucose and continuous insulin infusion.
- Glucose metabolism was analyzed using labeled glucose isotopes and isotope dilution mass spectrometry.
- Indirect calorimetry measured oxygen uptake (VO2) and carbon dioxide production (VCO2) before and during PGI2 infusion.
Main Results:
- PGI2 infusion significantly increased oxygen delivery (DO2) and oxygen uptake (VO2).
- Despite constant glucose turnover and production rates, glucose oxidation rate increased significantly.
- Carbon dioxide production (VCO2) remained unchanged during PGI2 infusion.
Conclusions:
- PGI2 administration in sepsis patients improves tissue perfusion and oxygenation.
- This improvement in oxygenation is associated with an increased glucose oxidation rate, suggesting enhanced ATP production.
- PGI2 may represent a therapeutic strategy to ameliorate impaired glucose metabolism in sepsis.