NDLI: Dietary vitamin C supplementation decreases blood pressure in DOCA-salt hypertensive male Sprague Dawley rats and this is associated with increased liver oxidative stress

Content Provider	Springer Nature Link
Author	Elhaïmeur, Fatiha Courderot Masuyer, Carol Nicod, Laurence Guyon, Catherine Richert, Lysiane Berthelot, Alain
Copyright Year	2002
Abstract	The effects of a vitamin C supplemented diet on blood pressure, body and liver weights, liver antioxidant status, iron and copper levels were investigated in DOCA-salt treated and untreated Sprague-Dawley (SD) male rats after 8 weeks of treatment. Vitamin C supplementation had no effect on blood pressure in SD rats but induced a significant decrease in blood pressure in DOCA-salt treated rats, the decrease being more efficient at 50 mg/kg of vitamin C than at 500 mg/kg. Hepatic lipid peroxidation and iron levels were significantly increased in DOCA-salt hypertensive rats whereas total hepatic antioxidant capacity (HAC), glutathione peroxidase (GSH-Px) and catalase (CAT) activities were decreased. Vitamin C supplementation did not affect the overall antioxidant defences of control SD rat livers. In contrast, vitamin C supplementation accentuated the DOCA-salt induced accumulation of liver iron and lipid peroxidation. This occurred without any notable aggravation in the antioxidant deficiency of vitamin C supplemented DOCA-salt treated rat livers. Our data suggest that DOCA-salt treatment induces an accumulation of iron in rat livers which is responsible for the prooxidant effect of vitamin C. The normalization of blood pressure in DOCA-salt treated rats by vitamin C supplementation appears thus independent from liver antioxidant status.
Starting Page	77
Ending Page	83
Page Count	7
File Format	PDF
ISSN	03008177
Journal	Molecular and Cellular Biochemistry
Volume Number	237
Issue Number	1-2
e-ISSN	15734919
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2002-01-01
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cardiology Medical Biochemistry Oncology Biochemistry
Content Type	Text
Resource Type	Article
Subject	Cell Biology Medicine Clinical Biochemistry Molecular Biology

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