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Curative diet supplementation with a melon superoxide dismutase reduces adipose tissue in obese hamsters by improving insulin sensitivity
- Source :
- Molecular nutritionfood research. 58(4)
- Publication Year :
- 2013
-
Abstract
- Scope Obesity-related metabolic syndrome is often associated with a decrease of insulin sensitivity, inducing several modifications. However, dietary antioxidants could prevent insulin resistance. We have previously shown the preventive effects of a melon superoxide dismutase (SOD) in obese hamsters. However, its antioxidant effects have never been studied on adipose tissue. Methods and results We evaluated the effects of a 1-month curative supplementation with SODB on the adipose tissue of obese hamsters. Animals received either a standard diet or a cafeteria diet for 15 wk. Cafeteria diet induced obesity and related disorders, including insulin resistance and oxidative stress, in the abdominal adipose tissue. After SODB supplementation, the adipose tissue weight was decreased, probably by activating adipocytes lipolysis and thus reducing their size. SODB treatment also resulted in abdominal adipose tissue fibrosis reduction. Finally, SODB administration increased the expression of endogenous antioxidant enzymes and thus reduced oxidative stress and insulin resistance. The improvement of insulin sensitivity observed after SODB treatment could explain adipocyte lipolysis activation and fibrosis reduction. Conclusion These findings demonstrate that a dietary SOD supplementation could be a useful strategy against obesity-related modifications in adipose tissue.
- Subjects :
- Male
medicine.medical_specialty
Lipolysis
Adipose tissue
medicine.disease_cause
Antioxidants
Superoxide dismutase
chemistry.chemical_compound
Insulin resistance
Fibrosis
Superoxides
Adipocyte
Internal medicine
medicine
Adipocytes
Animals
Obesity
Glutathione Peroxidase
biology
Mesocricetus
Superoxide Dismutase
Body Weight
medicine.disease
Catalase
Cucurbitaceae
Oxidative Stress
Endocrinology
chemistry
Adipose Tissue
Dietary Supplements
biology.protein
Metabolic syndrome
Insulin Resistance
Oxidative stress
Food Science
Biotechnology
Subjects
Details
- ISSN :
- 16134133
- Volume :
- 58
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- Molecular nutritionfood research
- Accession number :
- edsair.doi.dedup.....2f9800eb94bf5e847c10269166a9b0bd