1
|
Buckley EM, Platt MO, Lam WA. Novel in vivo and in vitro techniques to image and model the cerebral vasculature in sickle cell disease. Blood Cells Mol Dis 2017; 67:114-119. [PMID: 28822622 DOI: 10.1016/j.bcmd.2017.08.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 08/07/2017] [Indexed: 01/20/2023]
Affiliation(s)
- Erin M Buckley
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, United States; Department of Pediatrics, Emory University, United States.
| | - Manu O Platt
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, United States.
| | - Wilbur A Lam
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, United States; Department of Pediatrics, Emory University, United States; Aflac Cancer and Blood Disorders Center of Children's Healthcare of Atlanta, Department of Pediatrics, Emory University School of Medicine, Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, United States.
| |
Collapse
|
2
|
Itokua KE, Makulo JR, Lepira FB, Aloni MN, Ekulu PM, Sumaili EK, Bukabau JB, Mokoli VM, Longo AL, Kajingulu FM, Zinga CV, Nlandu YM, Engole YM, Akilimali PZ, Ngiyulu RM, Gini JL, Nseka NM. Albuminuria, serum antioxidant enzyme levels and markers of hemolysis and inflammation in steady state children with sickle cell anemia. BMC Nephrol 2016; 17:178. [PMID: 27855647 PMCID: PMC5114808 DOI: 10.1186/s12882-016-0398-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 11/15/2016] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Oxidative stress is thought to be involved in the pathogenesis of microalbuminuria in Sickle cell anemia (SCA). Antioxidant enzymes such as glutathione peroxidase (GPx) and Cu-Zn superoxide dismutase (SOD) may play an important protective role. This study aimed to evaluate the association between albuminuria and these two antioxidant enzymes. METHODS We consecutively recruited Steady state children aged between 2 and 18 years old with established diagnosis of homozygous SCA in two hospitals of Kinshasa/DR Congo. The relationship between Urinary Albumin Creatinine Ratio (UACR) and other variables of interest (age, systolic blood pressure, diastolic blood pressure, plasma GPx and Cu-Zn SOD, free plasmatic hemoglobin, LDH, indirect bilirubin, white blood cells (WBC), percentage of fetal hemoglobin, serum iron, ferritin, CRP) was analyzed by Bivariate correlation (Pearson's correlation coefficient). Microalbuminuria was defined by urine albumin/creatinine ratio between 30 and 299 mg/g. RESULTS Seventy Steady state Black African children with SCA (56% boys; average age 9.9 ± 4.3 years; 53% receiving hydroxyurea) were selected. Prevalence of microalbuminuria was 11.8%. LDH (r = 0.260; p = 0.033) and WBC count (r = 0.264; p = 0.033) were positively correlated with UACR whereas GPx (- 0.328; p = 0.007) and Cu-Zn SOD (- 0.210; p = 0.091) were negatively correlated with UACR. CONCLUSIONS Albuminuria is associated with decreased antioxidant capacity and increased levels of markers of hemolysis and inflammation. Therefore, strategies targeting the reduction of sickling and subsequent hemolysis, oxidative stress and inflammation could help preventing or at least delaying the progression of kidney disease in SCA children.
Collapse
Affiliation(s)
- Karen E Itokua
- Division of Hematology, Oncology and Nephrology, Department of Pediatric, University of Kinshasa Hospital, University of Kinshasa, Kinshasa, Democratic Republic of the Congo
| | - Jean Robert Makulo
- Nephrology Unit, Department of Internal Medicine, University of Kinshasa Hospital, University of Kinshasa, Kinshasa, Democratic Republic of the Congo. .,Faculty of Medicine, University of Kinshasa Hospital, Kinshasa, Democratic Republic of the Congo.
| | - François B Lepira
- Nephrology Unit, Department of Internal Medicine, University of Kinshasa Hospital, University of Kinshasa, Kinshasa, Democratic Republic of the Congo
| | - Michel N Aloni
- Division of Hematology, Oncology and Nephrology, Department of Pediatric, University of Kinshasa Hospital, University of Kinshasa, Kinshasa, Democratic Republic of the Congo
| | - Pépé M Ekulu
- Division of Hematology, Oncology and Nephrology, Department of Pediatric, University of Kinshasa Hospital, University of Kinshasa, Kinshasa, Democratic Republic of the Congo
| | - Ernest K Sumaili
- Nephrology Unit, Department of Internal Medicine, University of Kinshasa Hospital, University of Kinshasa, Kinshasa, Democratic Republic of the Congo
| | - Justine B Bukabau
- Nephrology Unit, Department of Internal Medicine, University of Kinshasa Hospital, University of Kinshasa, Kinshasa, Democratic Republic of the Congo
| | - Vieux M Mokoli
- Nephrology Unit, Department of Internal Medicine, University of Kinshasa Hospital, University of Kinshasa, Kinshasa, Democratic Republic of the Congo
| | - Augustin L Longo
- Nephrology Unit, Department of Internal Medicine, University of Kinshasa Hospital, University of Kinshasa, Kinshasa, Democratic Republic of the Congo
| | - François M Kajingulu
- Nephrology Unit, Department of Internal Medicine, University of Kinshasa Hospital, University of Kinshasa, Kinshasa, Democratic Republic of the Congo
| | - Chantal V Zinga
- Nephrology Unit, Department of Internal Medicine, University of Kinshasa Hospital, University of Kinshasa, Kinshasa, Democratic Republic of the Congo
| | - Yannick M Nlandu
- Nephrology Unit, Department of Internal Medicine, University of Kinshasa Hospital, University of Kinshasa, Kinshasa, Democratic Republic of the Congo
| | - Yannick M Engole
- Nephrology Unit, Department of Internal Medicine, University of Kinshasa Hospital, University of Kinshasa, Kinshasa, Democratic Republic of the Congo
| | - Pierre Z Akilimali
- Kinshasa School of Public Health, University of Kinshasa, Kinshasa, Democratic Republic of the Congo
| | - René M Ngiyulu
- Division of Hematology, Oncology and Nephrology, Department of Pediatric, University of Kinshasa Hospital, University of Kinshasa, Kinshasa, Democratic Republic of the Congo
| | - Jean Lambert Gini
- Division of Hematology, Oncology and Nephrology, Department of Pediatric, University of Kinshasa Hospital, University of Kinshasa, Kinshasa, Democratic Republic of the Congo
| | - Nazaire M Nseka
- Nephrology Unit, Department of Internal Medicine, University of Kinshasa Hospital, University of Kinshasa, Kinshasa, Democratic Republic of the Congo
| |
Collapse
|