Proliferative and apoptotic evaluations of renal preventive effects of coenzyme Q10 in radioiodine-131 induced renal damage

Abstract

The aim of this study was to investigated anti-proliferative and antiapoptotic effects of coenzyme Q10 (CoQ10) in the prevention of radioiodine-131 (RAI) (I 131 ) induced kidney damage. A total of Wistar albino rats were separated into equal three groups (n = 8/group): Group 1 (control): untreated group; Group 2 (RAI): mCi/kg RAI oral route; Group 3 (RAI+CoQ10): 3 mCi/kg RAI oral route and intraperitoneally 30 mg/kg/day CoQ10. CoeQ10 treatment was started two days before RAI administration and was continued five days once daily after RAI.Pathomorphological parameters of kidneys were measured using hematoxylin-eosin and Masson's trichrome staining. Immunohistochemically; proliferating cell nuclear antigen (PCNA), caspase 8, caspase 9 and terminal deoxynucleotidyl transferasemediated deoxyuridine triphosphate nick end labeling (TUNEL) were used to determine proliferation and apoptosis. With the exception of the control group, varying degrees of inflammation, degeneration, necrosis, and interstitial/perivascular fibrosis were detected in the kidneys of all rats. This histopathological damage was found to be significantly less in CoQ10 group versus RAI group (P<0.05). The all immunohistochemical examinations demonstrated that administration of CoQ10 had reduced proliferation and apoptosis (P<0.05). The results of kidney histopathology and immunohistochemistry demonstrated that administration of CoQ10 had reduced inflammation, proliferation, and apoptosis. These findings show CoQ10 can play an important role in the radioprotection of kidneys against RAI-induced damage.