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Red blood cells, platelets and polymorphonuclear neutrophils of patients with sickle cell disease exhibit oxidative stress that can be ameliorated by antioxidants.
Br J Haematol 2006; 132(1):108-13BJ

Abstract

Sickle cell disease (SCD) is basically a red blood cell (RBC) disorder characterised by sickling and haemolysis, but platelets and polymorphonuclear neutrophils (PMN) are also involved. Oxidative damage may play a role in the pathogenesis of SCD. Using flow cytometry, we measured oxidative-state markers simultaneously in RBC, platelets and PMN obtained from 25 normal donors, nine homozygous (SS) patients and six SS/beta-thalassaemia patients. Reactive oxygen species (ROS) and reduced glutathione (GSH) were measured following staining of blood samples with fluorescence probes and gating on specific subpopulations based on size and granularity. Ten- to 30-fold higher ROS production and 20-50% lower GSH content were found in RBC, platelets and PMN from SCD patients versus those of their normal counterparts. This could in part account for the clinical manifestations, such as haemolysis, a hypercoagulable state, recurrent bacterial infections and vaso-occlusive incidences, in SCD. We further showed that exposure of SCD samples to antioxidants, such as N-acetyl-cysteine, vitamin C and vitamin E, decreased their oxidative stress. These results suggest that antioxidant treatment of patients with SCD could reduce oxidative damage to RBC, PMN and platelets, thereby alleviating symptoms associated with their pathology. The flow cytometry techniques presented herein could assist in monitoring the efficacy of such treatment.

Authors+Show Affiliations

Hadassah - Hebrew University Medical Centre, Jerusalem.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

16371026

Citation

Amer, Johnny, et al. "Red Blood Cells, Platelets and Polymorphonuclear Neutrophils of Patients With Sickle Cell Disease Exhibit Oxidative Stress That Can Be Ameliorated By Antioxidants." British Journal of Haematology, vol. 132, no. 1, 2006, pp. 108-13.
Amer J, Ghoti H, Rachmilewitz E, et al. Red blood cells, platelets and polymorphonuclear neutrophils of patients with sickle cell disease exhibit oxidative stress that can be ameliorated by antioxidants. Br J Haematol. 2006;132(1):108-13.
Amer, J., Ghoti, H., Rachmilewitz, E., Koren, A., Levin, C., & Fibach, E. (2006). Red blood cells, platelets and polymorphonuclear neutrophils of patients with sickle cell disease exhibit oxidative stress that can be ameliorated by antioxidants. British Journal of Haematology, 132(1), pp. 108-13.
Amer J, et al. Red Blood Cells, Platelets and Polymorphonuclear Neutrophils of Patients With Sickle Cell Disease Exhibit Oxidative Stress That Can Be Ameliorated By Antioxidants. Br J Haematol. 2006;132(1):108-13. PubMed PMID: 16371026.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Red blood cells, platelets and polymorphonuclear neutrophils of patients with sickle cell disease exhibit oxidative stress that can be ameliorated by antioxidants. AU - Amer,Johnny, AU - Ghoti,Hussam, AU - Rachmilewitz,Eliezer, AU - Koren,Ariel, AU - Levin,Carina, AU - Fibach,Eitan, PY - 2005/12/24/pubmed PY - 2006/1/18/medline PY - 2005/12/24/entrez SP - 108 EP - 13 JF - British journal of haematology JO - Br. J. Haematol. VL - 132 IS - 1 N2 - Sickle cell disease (SCD) is basically a red blood cell (RBC) disorder characterised by sickling and haemolysis, but platelets and polymorphonuclear neutrophils (PMN) are also involved. Oxidative damage may play a role in the pathogenesis of SCD. Using flow cytometry, we measured oxidative-state markers simultaneously in RBC, platelets and PMN obtained from 25 normal donors, nine homozygous (SS) patients and six SS/beta-thalassaemia patients. Reactive oxygen species (ROS) and reduced glutathione (GSH) were measured following staining of blood samples with fluorescence probes and gating on specific subpopulations based on size and granularity. Ten- to 30-fold higher ROS production and 20-50% lower GSH content were found in RBC, platelets and PMN from SCD patients versus those of their normal counterparts. This could in part account for the clinical manifestations, such as haemolysis, a hypercoagulable state, recurrent bacterial infections and vaso-occlusive incidences, in SCD. We further showed that exposure of SCD samples to antioxidants, such as N-acetyl-cysteine, vitamin C and vitamin E, decreased their oxidative stress. These results suggest that antioxidant treatment of patients with SCD could reduce oxidative damage to RBC, PMN and platelets, thereby alleviating symptoms associated with their pathology. The flow cytometry techniques presented herein could assist in monitoring the efficacy of such treatment. SN - 0007-1048 UR - https://www.unboundmedicine.com/medline/citation/16371026/Red_blood_cells_platelets_and_polymorphonuclear_neutrophils_of_patients_with_sickle_cell_disease_exhibit_oxidative_stress_that_can_be_ameliorated_by_antioxidants_ L2 - https://doi.org/10.1111/j.1365-2141.2005.05834.x DB - PRIME DP - Unbound Medicine ER -