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CD4+ lymphocyte adenosine triphosphate determination in sepsis: a cohort study
Kevin L Lawrence1, Patrick H White, Gerald P Morris
1Department of Medicine, Washington University in St, Louis School of Medicine, 660 South Euclid, Campus Box 8052, St Louis, Missouri 63110, USA. kevinllawrence@yahoo.com
Critical Care (London, England)
|June 15, 2010
Summary
Current sepsis classifications don't reflect immune status. Measuring CD4+ lymphocyte adenosine triphosphate (ATP) shows lower ATP levels in sepsis patients are linked to worse outcomes, highlighting a potential new prognostic marker.
Area of Science:
- Immunology
- Critical Care Medicine
- Biochemistry
Background:
- Current sepsis classification relies on clinical criteria, which may not accurately represent a patient's immune status.
- Immune dysregulation is central to sepsis pathophysiology.
- Assessing immune status can provide deeper insights into patient prognosis.
Purpose of the Study:
- To evaluate the immune status of sepsis patients using CD4+ lymphocyte adenosine triphosphate (ATP) content.
- To determine if current clinical sepsis classifications correlate with measured immune status.
- To investigate the association between immune status and clinical outcomes in sepsis.
Main Methods:
- Studied 52 patients with sepsis, severe sepsis, or septic shock.
- Measured CD4+ lymphocyte adenosine triphosphate (ATP) content in whole blood after mitogen stimulation.
- Utilized flow cytometry to quantify lymphocyte ATP levels.
Main Results:
- No significant difference in CD4+ lymphocyte ATP content was observed among sepsis, severe sepsis, and septic shock groups.
- Sepsis survivors exhibited significantly higher CD4+ lymphocyte ATP content upon ICU admission compared to non-survivors.
- CD4+ lymphocyte ATP levels did not align with the clinical sepsis severity classification.
Conclusions:
- The current clinical sepsis classification system is not a reliable indicator of individual immune status as measured by CD4+ lymphocyte ATP content.
- Lower CD4+ lymphocyte ATP content at ICU admission is associated with poorer clinical outcomes in sepsis patients.
- CD4+ lymphocyte ATP measurement may serve as a valuable prognostic biomarker in sepsis management.