Rapid, simple, and reliable method for the diagnosis of CAPD peritonitis using the new MMP-9 test kit

Area of Science:

• Nephrology
• Clinical Diagnostics
• Biochemistry

Background:

• Bacterial peritonitis is a serious complication in patients undergoing peritoneal dialysis (PD).
• Early and accurate diagnosis is crucial for effective treatment and patient outcomes.
• Current diagnostic methods may have limitations in speed or sensitivity.

Purpose of the Study:

• To evaluate the sensitivity and efficiency of a matrix metalloproteinase-9 (MMP-9) test kit for diagnosing bacterial peritonitis in PD patients.
• To assess the correlation between MMP-9 test kit reactivity and leukocyte counts in peritoneal effluents.
• To determine the reliability of the MMP-9 test for early detection of continuous ambulatory PD (CAPD) peritonitis.

Main Methods:

• Analysis of 112 peritoneal effluent samples from PD patients (peritonitis, suspected peritonitis, no infection, initiation of PD).
• Utilized MMP-9 test kit, leukocyte counts, and microbiological examination.
• MMP expression measured by gelatin zymography and ELISA.

Main Results:

• A significant difference in leukocyte counts was observed between MMP-9 test-positive and negative groups (P < 0.0001).
• The MMP-9 test kit yielded negative results for samples without elevated cell counts.
• Test reactivity was stable and showed no significant variation across different microorganisms.

Conclusions:

• The MMP-9 test kit is a simple, reliable, and sensitive method for the early diagnosis of bacterial peritonitis in CAPD patients.
• The test's performance correlates well with leukocyte counts in peritoneal effluents.
• This diagnostic tool can aid clinicians in timely management of PD-related infections.