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Year : 2015  |  Volume : 6  |  Issue : 3  |  Page : 115-118

Elevated levels of pro-coagulant microvesicles in children in-steady state sickle cell disease

1 Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
2 Department of Pathology, College of Medicine, King Khalid University, Abha, Saudi Arabia
3 Department of Internal Medicine, Hematology and Oncology Unit, Aseer Central Hospital, Ministry of Health, Abha, Saudi Arabia

Correspondence Address:
Hassan A Hamali
Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, P.O. Box 9060, Abha 61413
Saudi Arabia
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Source of Support: Nil., Conflict of Interest: There are no conflicts of interest.

DOI: 10.4103/1658-5127.165650

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Introduction: Sickle cell disease (SCD) is an inherited genetic disorder characterized by various complications, including thrombosis. Increased levels of circulating microvesicles (MVs) and tissue factor (TF)- bearing MVs have been reported in SCD. Objectives: The present study compares the levels of circulating MVs and TF- bearing MVs in steady state SCD children with age- and gender- matched healthy controls using an indirect ELISA. Citrated whole blood was collected from 54 SCD patients homozygous for sickle haemoglobin (HbSS) (aged from 2 to 12 years-old) and 34 healthy controls. Results: SCD patients showed significantly higher levels of MVs in their plasma as compared to the controls (P = 0.0095). Although the TF activity on MVs was low in both groups, there was a significant difference between them P <0.05). A strong correlation between the level of MVs and TF-MVs in the patient group was also noted. Conclusion: This suggests their involvement in the hypercoagulable state in the study group of patients. Further studies are recommended to elucidate the functional activity of MVs and TF-MVs, as well as the size and origin of MVs in the plasma.

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