Related Experiment Videos
[Polymorphonuclear leukocyte elastase (PMNE) levels in sepsis; the effect of PMNE on multiple organ failure (MOF)]
H Tanaka1, H Sugimoto, T Yoshioka
1Department of Traumatology, Osaka University, Japan.
Abstract:
To study the role of lysosomal protease released from polymorphonuclear leukocytes during MOF, plasma PMNE levels were measured serially in 38 patients. The patients were divided into two groups, 14 patients of MOF from sepsis (group 1), and 24 injured patients without MOF (group 2). The normal value of PMNE was from 21 to 165 micrograms/l. The PMNE levels of the group 1 elevated (831 +/- 241 micrograms/l) at the time of diagnosis of sepsis and remained high during MOF. On the contrary, those of the group 2 were high on admission (574 +/- 131 micrograms/l), but returned to normal within seven days. There was no relationship between the levels of PMNE and the number of neutrophils. However, the PMNE/neutrophils ratio was significantly higher in group 1. Correlations were demonstrated between the amount of PMNE and the decrease in the levels of platelet counts, fibronectin and coagulation factor XIII. It is suggested that PMNE might play a major role in the pathobiochemical changes and tissue injury during MOF.
Insights
Elevated polymorphonuclear neutrophil elastase (PMNE) in sepsis-induced multiple organ failure (MOF) suggests its role in tissue injury. High PMNE levels correlate with decreased platelets and clotting factors.
Area of Science:
- Biochemistry
- Immunology
- Pathophysiology
Context:
- Multiple organ failure (MOF) is a critical condition often stemming from sepsis.
- Polymorphonuclear leukocytes (PMNs) release enzymes like PMNE during inflammatory responses.
- Understanding the role of PMNE in MOF pathogenesis is crucial for developing targeted therapies.
Purpose:
- To investigate the role of plasma PMNE levels in patients with MOF, particularly sepsis-induced MOF.
- To compare PMNE levels in patients with MOF versus injured patients without MOF.
- To explore the correlation between PMNE levels and other biochemical markers affected during MOF.
Summary:
- Plasma PMNE levels were measured in 38 patients, divided into sepsis-induced MOF (n=14) and non-MOF injured patients (n=24).
- Group 1 (MOF) showed significantly elevated PMNE levels persisting throughout MOF, while Group 2 (non-MOF) levels normalized within seven days.
- A higher PMNE/neutrophil ratio was observed in the MOF group, with correlations found between PMNE levels and decreased platelet counts, fibronectin, and coagulation factor XIII.
Impact:
- The findings suggest PMNE plays a significant role in the pathobiochemical alterations and tissue damage observed in MOF.
- This research highlights PMNE as a potential biomarker for MOF severity and progression.
- Further studies on PMNE inhibition could offer novel therapeutic strategies for MOF management.