6533b7d0fe1ef96bd125b850
RESEARCH PRODUCT
Evaluation of whole antioxidant defenses of human mononuclear cells by a new in vitro biological test: lack of correlation between erythrocyte and mononuclear cell resistance to oxidative stress
Sylvie Caspar-bauguilJésus GarciaBrigitte PériquetAnne GalinierNicolas MaestreRobert SalvayreLuc PénicaudCéline SegafredoLouis CasteillaMichel Prostsubject
AntioxidantLysisErythrocytesmedicine.medical_treatmentRadicalClinical BiochemistryStatistics as TopicCell Culture TechniquesAntimycin AInflammationImmunologic Testsmedicine.disease_causePeripheral blood mononuclear cellAntioxidantsAnti-Bacterial Agents/pharmacologyImmunologic Tests/*methodsElectron Transport Complex IIIReactive Oxygen Species/metabolismAntioxidants/*metabolism/pharmacologymedicineErythrocytes/*metabolismLeukocytesHumansDiagnosticOxidative Stress/*drug effectschemistry.chemical_classificationReactive oxygen speciesAntimycin A/pharmacologyElectron Transport Complex III/antagonists & inhibitorsChemistryMononuclear/drug effects/*metabolismReproducibility of ResultsGeneral MedicineIn vitroAnti-Bacterial AgentsOxidative StressBiochemistryLeukocytes MononuclearReagent KitsReagent Kits Diagnosticmedicine.symptomReactive Oxygen SpeciesOxidation-ReductionOxidative stressdescription
1873-2933 (Electronic) Journal Article; OBJECTIVES: This work aims to evaluate the resistance of mononuclear cells to oxidative stress using a "KRL" test, formerly utilized to evaluate the resistance of erythrocyte to free radicals. METHODS: The "KRL" test evaluates the resistance to lysis of cells treated by free radicals generated under standardized conditions. RESULTS: We defined new analytical parameters (level of radical production, time course, number of cells) to obtain an accurate assay determining the resistance to oxidative stress of mononuclear cells, in comparison to that of erythrocytes. This test allows the evaluation of change in the redox state of mononuclear cells (improved by an antioxidant mix or deteriorated by antimycin A-induced mitochondrial radical overproduction). Interestingly, our data show that the sensitivity of mononuclear cells to oxidative stress is not correlated with the susceptibility of erythrocytes to oxidative stress. CONCLUSIONS: The quantification of the susceptibility of mononuclear cells to oxidative stress gives additional information (in addition to erythrocyte resistance) and could be helpful for patients with chronic inflammation.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-01-01 |