title: High consumption of fructose rather than glucose promotes a diet-induced obese phenotype in Drosophila melanogaster.
abstract: During the last 20 years, there has been a considerable scientific debate about the possible mechanisms of induction of metabolic disorders by reducing monosaccharides such as glucose or fructose. In this study, we report the metabolic rearrangement in response to consumption of these monosaccharides at concentrations ranging from 0.25% to 20% in a Drosophila model. Flies raised on high-glucose diet displayed delay in pupation and increased developmental mortality compared with fructose consumers. Both monosaccharides at high concentrations promoted an obese-like phenotype indicated by increased fly body mass, levels of uric acid, and circulating and stored carbohydrates and lipids; and decreased percentage of water in the body. However, flies raised on fructose showed lower levels of circulating glucose and higher concentrations of stored carbohydrates, lipids, and uric acid. The preferential induction of obesity caused by fructose in Drosophila was associated with increased food consumption and reduced mRNA levels of DILP2 and DILP5 in the brain of adult flies. Our data show that glucose and fructose differently affect carbohydrate and lipid metabolism in Drosophila in part by modulation of insulin/insulin-like growth factor signaling. Some reported similarities with effects observed in mammals make Drosophila as a useful model to study carbohydrate influence on metabolism and development of metabolic disorders.
authors.affiliation: Department of Biochemistry and Biotechnology, Vassyl Stefanyk Precarpathian National University, Ivano-Frankivsk, 76025, 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, 76025, 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, 76025, Ukraine.
authors.forename: Dmytro V
authors.initials: DV
authors.lastname: Gospodaryov
authors.affiliation: Institute for Cell and Molecular Biosciences and Newcastle Institute for Ageing, Newcastle University, Newcastle-Upon-Tyne, UK, NE4 5PL.
authors.forename: Alberto
authors.initials: A
authors.lastname: Sanz
authors.affiliation: Department of Biochemistry and Biotechnology, Vassyl Stefanyk Precarpathian National University, Ivano-Frankivsk, 76025, 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, 76025, Ukraine. Electronic address: lushchak@pu.if.ua.
authors.forename: Volodymyr I
authors.initials: VI
authors.lastname: Lushchak
mesh_terms: D000818:Animals; D004032:Diet; D029721:Drosophila Proteins / Q000096:biosynthesis; D004331:Drosophila melanogaster / Q000378:metabolism*; D005632:Fructose / Q000008:administration & dosage / Q000378:metabolism*; D005947:Glucose / Q000378:metabolism; D006801:Humans; D051034:Inhibitor of Apoptosis Proteins / Q000096:biosynthesis; D050356:Lipid Metabolism / Q000187:drug effects; D023421:Models, Animal; D009765:Obesity / Q000139:chemically induced / Q000378:metabolism* / Q000473:pathology
chemical_list: C111892:DIAP2 protein, Drosophila; D029721:Drosophila Proteins; D051034:Inhibitor of Apoptosis Proteins; D005632:Fructose; D005947:Glucose
keywords: Body composition; Fructose; Glucose; Insulin/IGF signaling; Obesity