Related Experiment Videos
Mononuclear cell function and energetics in early traumatic injury.
Narong Kulvatunyou1, Kristine E Groehler, Jodie H Taylor
1Department of Surgery, University of Minnesota and North Trauma Institute, North Memorial Medical Center, Minneapolis, Minnesota 55455, USA.
Surgical Infections
|May 15, 2003
Summary
Immune cell energy levels (ATP) and function appear preserved in early traumatic injury. While hypotensive trauma patients showed increased ATP with longer hypotension, phagocytic index correlated negatively with ATP levels.
Area of Science:
- Immunology
- Trauma Research
- Cellular Energetics
Background:
- Infectious complications post-trauma are common but poorly understood.
- A link between immune cell energy status and function in trauma is proposed.
- This study investigates cellular adenosine triphosphate (ATP) and immune cell function in trauma patients.
Purpose of the Study:
- To examine the relationship between cellular ATP levels and immune cell function in trauma patients.
- To compare immune cell energetics and function between normotensive trauma patients, hypotensive trauma patients, and healthy controls.
Main Methods:
- Peripheral blood mononuclear cells (PBMCs) isolated within 24h of injury.
- Assessed ATP levels using bioluminescence.
- Quantified phagocytosis (phagocytic index, PI) and protein synthesis.
Main Results:
- No significant difference in ATP levels or PI between trauma patients and controls.
- Hypotensive trauma patients received more transfusions.
- Increased duration of hypotension correlated with higher mononuclear cell ATP.
- Negative correlation found between PI and ATP levels in trauma patients.
- Protein synthesis was higher in normotensive trauma patients versus controls.
Conclusions:
- Mononuclear cell ATP levels and measured functions are preserved in early traumatic injury.
- Early trauma does not appear to impair basic immune cell energy metabolism or key functions like phagocytosis and protein synthesis.