Reproduction, Fertility and Development Reproduction, Fertility and Development Society
Vertebrate reproductive science and technology
RESEARCH ARTICLE

Fish oil and wheat-germ oil supplementation restores ovarian function in streptozotocin-diabetic rats

Naglaa F. Khedr
+ Author Affiliations
- Author Affiliations

Department of Biochemistry, Faculty of Pharmacy, Tanta University, El-Bahar Street, Medical Compound, Tanta 31527, Egypt. Email: naglaa_khedr2000@yahoo.com

Reproduction, Fertility and Development 29(9) 1689-1698 https://doi.org/10.1071/RD16135
Submitted: 30 March 2016  Accepted: 18 August 2016   Published: 28 September 2016

Abstract

Diabetes is a chronic metabolic disorder and has a profound impact on women’s reproductive health. This study aimed to investigate the protective effect of a mixture of fish oil (FO) and wheat-germ oil (WGO) on ovarian dysfunction in diabetic rats. Female Albino rats were divided into control, diabetic and FO–WGO-diabetic groups. Diabetes was induced by intraperitoneal injection of 65 mg kg–1 streptozotocin (STZ). Three weeks later, rats were given oral supplement of 0.4 g kg–1 oil mix (1000 mg FO + 100 mg WGO) daily for 3 weeks. Antioxidant activity was assessed by measuring malondialdehyde (MDA) and reduced glutathione (GSH) levels, the GSH : oxidised glutathione (GSSG) ratio and superoxide dismutase (SOD), glutathione peroxidase (GPx) and catalase (CAT) activities. Ovary function was indicated by serum concentrations of FSH, oestradiol (E2), LH, anti-Müllerian hormone (AMH), ovary histopathology and follicle counts. Anti-inflammatory properties were detected by measuring nuclear factor (NF)-κB in follicular cells by immunohistochemistry. FO–WGO supplementation enhanced CAT, SOD and GPx activities and raised GSH levels and the GSH : GSSG ratio. Supplementation also increased FSH, E2, LH and AMH levels and follicle counts. Moreover, NF-kB expression and MDA were reduced. These findings indicate that FO–WGO supplementation preserved ovarian function in STZ-induced diabetic rats.

Additional keywords: diabetes, follicle-stimulating hormone, ovary, oxidative stress.


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