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Published on: August 7, 2014
Studies on pathological plasma proteolysis in patients with septicemia
Summary
This study investigated plasma proteolysis in septicemia patients, finding low prekallikrein and antithrombin III indicate poor prognosis. A new Proenzymes functional inhibition index (PFI-index) aids early identification of high-risk patients.
Area of Science:
- Biochemistry
- Clinical Medicine
- Pathophysiology
Background:
- Sepsis involves complex plasma proteolysis.
- Understanding protease activity is crucial for prognosis.
Purpose of the Study:
- To investigate plasma proteolysis in surgical patients with septicemia.
- To evaluate diagnostic and prognostic markers.
- To introduce and assess a new prognostic index.
Main Methods:
- Chromogenic peptide substrate assays were used.
- Levels of proenzymes, functional inhibition capacity, and enzyme activities were determined.
- A new parameter, the Proenzymes functional inhibition index (PFI-index), was applied.
Main Results:
- Fatal cases showed persistent low levels of prekallikrein, plasminogen, and antithrombin III.
- Low prekallikrein and reduced plasma kallikrein inhibition indicated poor prognosis in septic shock.
- Survivors' parameters normalized with successful therapy.
- The PFI-index identified high-risk patients earlier.
Conclusions:
- Plasma proteolysis markers are valuable in septicemia.
- Low levels of specific proenzymes and reduced inhibition capacity are associated with poor outcomes.
- The PFI-index offers an improved method for early risk stratification in septicemia.
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