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Hemofiltration reduces the serum priming activity on neutrophil chemiluminescence in septic patients
- Source :
- Kidney international. 60(4)
- Publication Year :
- 2001
-
Abstract
- Hemofiltration reduces the serum priming activity on neutrophil chemiluminescence in septic patients. Background Priming of the polymorphonuclear neutrophil (PMN) response has been implicated in the activation of oxidative burst and tissue injury in patients with septic shock and acute renal failure (ARF). This study evaluated whether hemofiltration (HF) removes substances able to enhance the oxidative burst of PMNs. Methods Chemiluminescence (CL) priming activity induced by sera and ultrafiltrates of seven patients with septic shock, multiorgan dysfunction syndrome, and ARF (ARF/HF group) and of 10 uremic stable patients (Control/HF group) was evaluated on normal human PMNs stimulated with bacterial formyl-methionyl-leucyl-phenylalanine (FMLP). Patients submitted to HF were studied by determining blood and ultrafiltrate interleukin-8 (IL-8), platelet-activating factor (PAF), and CL priming activity at the beginning (T 0 ), and after four hours (T 4 ) of treatment. Results Preincubation of normal human PMNs with sera and ultrafiltrates from septic patients induced a potent priming of CL activity in subsequent FMLP stimulation. In the ARF/HF group, the prefilter blood concentrations of IL-8 and CL PMN-priming activity significantly decreased during the four hours of HF treatment, with a loss of IL-8 in the ultrafiltrate of 6930 (median, range 4292 to 9282) ng per four hours. PAF detected in the ultrafiltrate and associated with the membrane (7.3 ng, range 1.45 to 9.89) was minimal. In the ARF/HF group, a significantly positive correlation between CL PMN-priming activity and IL-8 concentrations was observed. The CL priming activity in blood and ultrafiltrates was reduced to 55 and 46% by preabsorption with monoclonal antibody (mAb) anti-IL-8. In contrast, the PAF receptor antagonist WEB 2170 did not affect CL priming activity. In the control/HF group, the CL PMN-priming activity was significantly lower than in the ARF/HF group and was independent of IL-8. Conclusions Sera from septic patients demonstrate an enhanced CL priming activity on PMNs. This activity is reduced by ultrafiltration and is due, at least in part, to ultrafiltered IL-8.
- Subjects :
- platelet-activating factor
medicine.drug_class
Neutrophils
medicine.medical_treatment
Multiple Organ Failure
Priming (immunology)
Pharmacology
acute renal failure
chemistry.chemical_compound
Reference Values
Hemofiltration
Medicine
Humans
Interleukin 8
Platelet Activating Factor
Aged
Respiratory Burst
Uremia
Platelet-activating factor
business.industry
Septic shock
Interleukin-8
Acute Kidney Injury
Middle Aged
medicine.disease
Receptor antagonist
Blood Physiological Phenomena
Shock, Septic
Respiratory burst
N-Formylmethionine Leucyl-Phenylalanine
ultrafiltrate
chemistry
inflammation
Nephrology
Immunology
Luminescent Measurements
septic shock
PMN oxidative burst
business
Subjects
Details
- ISSN :
- 00852538
- Volume :
- 60
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- Kidney international
- Accession number :
- edsair.doi.dedup.....1f46162429f6b11f4ee3b7944b83c257