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Abstract Sickle cell disease is one of the large health problems in many areas of the world. It is characterized by multisystem complications that had a marked variability in its severity among patients that may be linked to nitric oxide. Endothelial nitric oxide synthase variants have been found to be associated with several vascular disorders as well as the pathogenesis of sickle cell disease complications. The aim of this study is to explore the possible association between the endothelial nitric oxide synthase eNOS (T786C) gene polymorphisms and disease severity in pediatric patients with SCD. The study was carried out on 21 children diagnosed as SCD patients of both sexes, and 21 healthy children of matched age and sex as a control group, patients were selected from Pediatric Hematology Oncology Unit, Faculty of Medicine, Menoufia University. Lab tests were done at clinical pathology department, National Liver Institute, Menoufia University. Inclusion criteria: Children diagnosed with SCD. Children of both sexes & less than 18 Years old. Exclusion criteria: Children with other types of anemia. Presence of clinical comorbidities. |