Related Experiment Videos
Differential alterations in plasma colony-stimulating factor concentrations in meningococcaemia
P M Waring1, J Presneill, D W Maher
1Cancer Research Unit, Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria, Australia.
Clinical and Experimental Immunology
|December 1, 1995
Summary
Elevated levels of granulocyte colony-stimulating factor (G-CSF) and granulocyte-macrophage colony-stimulating factor (GM-CSF) correlate with severe sepsis outcomes, including septic shock and fatality. Macrophage colony-stimulating factor (M-CSF) showed no significant association with sepsis complications.
Area of Science:
- Immunology
- Infectious Diseases
- Critical Care Medicine
Background:
- Severe sepsis involves complex host responses mediated by various inflammatory factors.
- Colony-stimulating factors (CSFs) are key regulators of hematopoiesis and immune cell function.
- Understanding CSF dynamics in sepsis is crucial for predicting disease severity and outcomes.
Purpose of the Study:
- To investigate the role of circulating granulocyte colony-stimulating factor (G-CSF), granulocyte-macrophage colony-stimulating factor (GM-CSF), and macrophage colony-stimulating factor (M-CSF) in the host response to severe sepsis.
- To correlate CSF levels with clinical outcomes in patients with meningococcaemia, a model for human sepsis.
Main Methods:
- Plasma concentrations of G-CSF, GM-CSF, and M-CSF were measured using immunoassays in 20 subjects with meningococcaemia.
- CSF levels were analyzed in relation to clinical parameters including septic shock, disseminated intravascular coagulation, infection severity, and patient outcome.
Main Results:
- Plasma G-CSF levels were transiently elevated, significantly higher in septic shock patients (165 ng/ml) versus normotensive patients (7 ng/ml).
- Elevated G-CSF (>10 ng/ml) strongly predicted septic shock, disseminated intravascular coagulation, fulminant infection, and fatal outcomes.
- Brief elevations in GM-CSF (>1 ng/ml) were observed in life-threatening septic shock and associated with fulminant meningococcaemia.
- M-CSF levels were marginally elevated and not linked to sepsis-induced organ injury.
Conclusions:
- Plasma G-CSF and GM-CSF levels exhibit distinct patterns during meningococcaemia, reflecting their differential roles in sepsis pathogenesis.
- Elevated G-CSF is a significant predictor of severe sepsis complications and mortality.
- CSF dynamics provide valuable insights into host defense mechanisms and disease progression in sepsis and septic shock.