| Autor: |
Yildirim OG; a Department of Pharmacy Services, Vocational School of Health Services , Artvin Coruh University , Artvin , Turkey., Sumlu E; b Department of Pharmacology, Faculty of Pharmacy , Gazi University , Ankara , Turkey., Aslan E; c Department of Histology and Embryology, Faculty of Medicine , Afyon Kocatepe University , Afyonkarahisar , Turkey., Koca HB; d Department of Medical Biochemistry, Faculty of Medicine , Afyon Kocatepe University , Afyonkarahisar , Turkey., Pektas MB; e Department of Medical Pharmacology, Faculty of Medicine , Afyon Kocatepe University , Afyonkarahisar , Turkey., Sadi G; f Department of Biology, K.Ö. Science Faculty , Karamanoglu Mehmetbey University , Karaman , Turkey., Akar F; b Department of Pharmacology, Faculty of Pharmacy , Gazi University , Ankara , Turkey. |
| Abstrakt: |
The increased consumption of high-fructose in diet may contribute to high prevalence of metabolic syndrome in the world. The influence of high-fructose diet on male reproductive system has been poorly documented. In this study, we investigated the effects of dietary high-fructose on the expression of inflammatory cytokines in association with certain testicular proteins and sex hormones in the testis of rats. Fructose was given to the rats as 20% solution (7.8 mg/kg) in drinking water for 15 weeks. Dietary high-fructose caused testicular degeneration, also decreased testicular concentration of testosterone and right testis absolute weight. This dietary intervention increased iNOS and TNF-α mRNAs as well as iNOS, NF-κB, and p-NF-κβ proteins, but decreased IL-10 and IL-6 mRNAs expressions, in testicular samples of rats. Moreover, testicular TNF-α, IL-1β, and iNOS and plasma IL-1β levels were significantly increased in rats fed with fructose. A marked increase in the expression level of IGF-1R protein was considered in testicular tissue of fructose-treated rats. The expression intensities of c-kit, claudin-1, and pan-cadherin were comparable in seminiferous tubules of control and fructose-treated rats. In conclusion, high-fructose intake of rats leads to activation of inflammatory cytokines, which is accompanied by testicular degeneration. These changes could be responsible for hormonal dysfunction with low intra-testicular testosterone level, which could be relevant to male infertility. |
