Cyclosporine A induced changes to plasma and erythrocyte antioxidant defences.
Redox Rep
; 10(1): 2-8, 2005.
Article
em En
| MEDLINE
| ID: mdl-15829105
ABSTRACT
Organ transplant recipients develop pronounced cardiovascular disease, and decreased antioxidant capacity in plasma and erythrocytes is associated with the pathogenesis of this disease. These experiments tested the hypothesis that the immunosuppressant cyclosporine A (CsA) alters erythrocyte redox balance and reduces plasma antioxidant capacity. Female Sprague-Dawley rats were randomly assigned to a control or CsA treated group. Treatment animals received 25 mg/kg/day of CsA via intraperitoneal injection for 18 days. Control rats were injected with the same volume of the vehicle. Three hours after the final CsA injection, rats were exsanguinated and plasma analysed for total antioxidant status (TAS), alpha-tocopherol, malondialdehyde (MDA), and creatinine. Erythrocytes were analysed for superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPX) and glucose-6-phosphate dehydrogenase (G6PD) activities, alpha-tocopherol, and MDA. CsA administration resulted in a significant (P < 0.05) decrease in plasma TAS and significant increases (P < 0.05) in plasma creatinine and MDA. Erythrocyte CAT was significantly (P < 0.05) increased in CsA treated rats compared to controls. There were no significant differences (P > 0.05) in erythrocyte SOD, GPX, G6PD, alpha-tocopherol or MDA between groups. In summary, CsA alters erythrocyte antioxidant defence and decreases plasma total antioxidant capacity.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ciclosporina
/
Eritrócitos
/
Antioxidantes
Limite:
Animals
Idioma:
En
Revista:
Redox Rep
Assunto da revista:
BIOQUIMICA
/
METABOLISMO
Ano de publicação:
2005
Tipo de documento:
Article
País de afiliação:
Austrália