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Published in: Diabetology & Metabolic Syndrome 1/2010

Open Access 01-12-2010 | Research

Improvement of renal oxidative stress markers after ozone administration in diabetic nephropathy in rats

Authors: Mohamed D Morsy, Waleed N Hassan, Sherif I Zalat

Published in: Diabetology & Metabolic Syndrome | Issue 1/2010

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Abstract

Background

Several complications of diabetes mellitus (DM) e.g. nephropathy (DN) have been linked to oxidative stress. Ozone, by means of oxidative preconditioning, may exert its protective effects on DN.

Aim

The aim of the present work is to study the possible role of ozone therapy in ameliorating oxidative stress and inducing renal antioxidant defence in streptozotocin (STZ)-induced diabetic rats.

Methods

Six groups (n = 10) of male Sprague Dawley rats were used as follows: Group C: Control group. Group O: Ozone group, in which animals received ozone intraperitoneally (i.p.) (1.1 mg/kg). Group D: Diabetic group, in which DM was induced by single i.p. injections of streptozotocin (STZ). Group DI: Similar to group D but animals also received subcutaneous (SC) insulin (0.75 IU/100 gm BW.). Group DO: In which diabetic rats received the same dose of ozone, 48 h after induction of diabetes. Group DIO, in which diabetic rats received the same doses of insulin and ozone, respectively. All animals received daily treatment for six weeks. At the end of the study period (6 weeks), blood pressure, blood glycosylated hemoglobin (HbA1c), serum creatinine, blood urea nitrogen (BUN), kidney tissue levels of superoxide dismutase (SOD), catalase (CAT), glutathione peroxide (GPx), aldose reductase (AR) activities and malondialdehyde (MDA) concentration were measured.

Results

Induction of DM in rats significantly elevated blood pressure, HbA1c, BUN, creatinine and renal tissue levels of MDA and AR while significantly reducing SOD, CAT and GPx activities. Either Insulin or ozone therapy significantly reversed the effects of DM on all parameters; in combination (DIO group), they caused significant improvements in all parameters in comparison to each alone.

Conclusions

Ozone administration in conjunction with insulin in DM rats reduces oxidative stress markers and improves renal antioxidant enzyme activity which highlights its potential uses in the regimen for treatment of diabetic patients.
Appendix
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Metadata
Title
Improvement of renal oxidative stress markers after ozone administration in diabetic nephropathy in rats
Authors
Mohamed D Morsy
Waleed N Hassan
Sherif I Zalat
Publication date
01-12-2010
Publisher
BioMed Central
Published in
Diabetology & Metabolic Syndrome / Issue 1/2010
Electronic ISSN: 1758-5996
DOI
https://doi.org/10.1186/1758-5996-2-29

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