title: High sucrose consumption promotes obesity whereas its low consumption induces oxidative stress in Drosophila melanogaster.
abstract: The effects of sucrose in varied concentrations (0.25-20%) with constant amount of yeasts in larval diet on development and metabolic parameters of adult fruit fly Drosophila melanogaster were studied. Larvae consumed more food at low sucrose diet, overeating with yeast. On high sucrose diet, larvae ingested more carbohydrates, despite consuming less food and obtaining less protein derived from yeast. High sucrose diet slowed down pupation and increased pupa mortality, enhanced levels of lipids and glycogen, increased dry body mass, decreased water content, i.e. resulted in obese phenotype. Furthermore, it suppressed reactive oxygen species-induced oxidation of lipids and proteins as well as the activity of superoxide dismutase. The activity of catalase was gender-related. In males, at all sucrose concentrations used catalase activity was higher than at its concentration of 0.25%, whereas in females sucrose concentration virtually did not influence the activity. High sucrose diet increased content of protein thiols and the activity of glucose-6-phosphate dehydrogenase. The increase in sucrose concentration also enhanced uric acid level in females, but caused opposite effects in males. Development on high sucrose diets was accompanied by elevated steady-state insulin-like peptide 3 mRNA level. Finally, carbohydrate starvation at yeast overfeeding on low sucrose diets resulted in oxidative stress reflected by higher levels of oxidized lipids and proteins accompanied by increased superoxide dismutase activity. Potential mechanisms involved in regulation of redox processes by carbohydrates are discussed.
authors.affiliation: Department of Biochemistry and Biotechnology, Vassyl Stefanyk Precarpathian National University, Ivano-Frankivsk 76018, Ukraine.
authors.forename: Bohdana M
authors.initials: BM
authors.lastname: Rovenko
authors.affiliation: Department of Biochemistry and Biotechnology, Vassyl Stefanyk Precarpathian National University, Ivano-Frankivsk 76018, Ukraine.
authors.forename: Olga I
authors.initials: OI
authors.lastname: Kubrak
authors.affiliation: Department of Biochemistry and Biotechnology, Vassyl Stefanyk Precarpathian National University, Ivano-Frankivsk 76018, Ukraine.
authors.forename: Dmytro V
authors.initials: DV
authors.lastname: Gospodaryov
authors.affiliation: Department of Biochemistry and Biotechnology, Vassyl Stefanyk Precarpathian National University, Ivano-Frankivsk 76018, Ukraine.
authors.forename: Natalia V
authors.initials: NV
authors.lastname: Perkhulyn
authors.affiliation: Department of Biochemistry and Biotechnology, Vassyl Stefanyk Precarpathian National University, Ivano-Frankivsk 76018, Ukraine.
authors.forename: Ihor S
authors.initials: IS
authors.lastname: Yurkevych
authors.affiliation: Institute for Cell and Molecular Biosciences and Newcastle Institute for Ageing, Newcastle University, Newcastle-Upon-Tyne NE4 5PL, UK.
authors.forename: Alberto
authors.initials: A
authors.lastname: Sanz
authors.affiliation: Department of Biochemistry and Biotechnology, Vassyl Stefanyk Precarpathian National University, Ivano-Frankivsk 76018, Ukraine. Electronic address: olehl@pu.if.ua.
authors.forename: Oleh V
authors.initials: OV
authors.lastname: Lushchak
authors.affiliation: Department of Biochemistry and Biotechnology, Vassyl Stefanyk Precarpathian National University, Ivano-Frankivsk 76018, Ukraine. Electronic address: lushchak@pu.if.ua.
authors.forename: Volodymyr I
authors.initials: VI
authors.lastname: Lushchak
mesh_terms: D000818:Animals; D002374:Catalase; D004331:Drosophila melanogaster / Q000254:growth & development / Q000378:metabolism*; D005260:Female; D007814:Larva / Q000254:growth & development / Q000378:metabolism; D008297:Male; D010084:Oxidation-Reduction; D018384:Oxidative Stress; D011679:Pupa / Q000254:growth & development / Q000378:metabolism; D013395:Sucrose / Q000378:metabolism*; D013482:Superoxide Dismutase / Q000378:metabolism; D015003:Yeasts
chemical_list: D013395:Sucrose; D002374:Catalase; D013482:Superoxide Dismutase
keywords: Antioxidant enzymes; Body composition; Development; Larval nutrition