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1.
Biomolecules ; 8(2)2018 06 01.
Article in English | MEDLINE | ID: mdl-29857581

ABSTRACT

Type 2 diabetes mellitus is characterized by insulin resistance in the liver. Insulin is not only involved in carbohydrate metabolism, it also regulates protein synthesis. This work describes the expression of proteins in the liver of a diabetic mouse and identifies the metabolic pathways involved. Twenty-week-old diabetic db/db mice were hepatectomized, after which proteins were separated by 2D-Polyacrylamide Gel Electrophoresis (2D-PAGE). Spots varying in intensity were analyzed using mass spectrometry, and biological function was assigned by the Database for Annotation, Visualization and Integrated Discovery (DAVID) software. A differential expression of 26 proteins was identified; among these were arginase-1, pyruvate carboxylase, peroxiredoxin-1, regucalcin, and sorbitol dehydrogenase. Bioinformatics analysis indicated that many of these proteins are mitochondrial and participate in metabolic pathways, such as the citrate cycle, the fructose and mannose metabolism, and glycolysis or gluconeogenesis. In addition, these proteins are related to oxidation⁻reduction reactions and molecular function of vitamin binding and amino acid metabolism. In conclusion, the proteomic profile of the liver of diabetic mouse db/db exhibited mainly alterations in the metabolism of carbohydrates and nitrogen. These differences illustrate the heterogeneity of diabetes in its different stages and under different conditions and highlights the need to improve treatments for this disease.


Subject(s)
Diabetes Mellitus, Type 2/metabolism , Liver/metabolism , Proteome/metabolism , Animals , Male , Metabolic Networks and Pathways , Mice , Proteome/chemistry , Proteome/genetics
2.
Gac Med Mex ; 150 Suppl 1: 88-94, 2014 Dec.
Article in Spanish | MEDLINE | ID: mdl-25643683

ABSTRACT

The incidence of type 2 diabetes mellitus (T2D) is growing rapidly due to aging, urbanization, changes in lifestyle, and increasing prevalence of obesity. In T2D, chronic hyperglycemia leads to macro and micro vascular complications, which currently are serious problem for health systems worldwide. The complexity of T2D and its complications requires study skills of high performance that provide important information in the understanding of the pathophysiology of the disease and biological pathways involved in development of T2D and its complications. In this work we describe the recent contributions of proteomics in the study of T2D and discuss its importance in the identification of therapeutic targets and biomarkers that help to improve the diagnosis of T2D, monitor the disease progression, and the development of new drugs to improve treatment and reduce its complications.

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