Obese dogs with and without obesity-related metabolic dysfunction – a proteomic approach



Tvarijonaviciute, A, Ceron, Jose J, de Torre, Carlos, Ljubic, Blanka B, Holden, Shelly L, Queau, Yann, Morris, Penelope J, Pastor, Josep and German, Alexander J ORCID: 0000-0002-3017-7988
(2016) Obese dogs with and without obesity-related metabolic dysfunction – a proteomic approach. BMC Veterinary Research, 12.

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Abstract

Background Approximately 20 % of obese dogs have metabolic disturbances similar to those observed in human metabolic syndrome, a condition known as obesity-related metabolic dysfunction. This condition is associated with insulin resistance and decreased circulating adiponectin concentrations, but clinical consequences have not been reported. In order to define better the metabolic changes associated with obesity-related metabolic dysfunction (ORMD), we compared the plasma proteomes of obese dogs with and without ORMD. A proteomic analysis was conducted on plasma samples from 8 obese male dogs, 4 with ORMD and 4 without ORMD. The samples were first treated for the depletion of high-abundance proteins and subsequently analysed by using 2-DE DIGE methodology. Results Using mass spectrometry, 12 proteins were identified: albumin, apoliprotein A-I, C2, C3, C5, C4BPA, A2M, Uncharacterised protein (Fragment) OS = Canis familiaris, fibrinogen, IGJ, ITIH2, and glutathione peroxidase. In obese dogs with ORMD, the relative amounts of ten proteins (albumin, apoliprotein A-I, C2, C3, C5, C4BPA, A2M, Uncharacterised protein (Fragment) OS = Canis familiaris, fibrinogen, and ITIH2) were increased and two proteins (IGJ and glutathione peroxidase) were decreased, compared with obese dogs without ORMD. Specific assays were then used to confirm differences in serum albumin, apoliprotein A-I and glutathione peroxidase in a separate group of 20 overweight dogs, 8 with ORMD and 12 without ORMD. Conclusions The current study provides evidence that, in obese dogs with ORMD, there are changes in expression of proteins involved in lipid metabolism, immune response, and antioxidant status. The clinical significance of these changes remains to be defined.

Item Type: Article
Uncontrolled Keywords: Antioxidants, Complement system, Dog, Immune response, Lipid metabolism, Metabolic syndrome, Obesity
Depositing User: Symplectic Admin
Date Deposited: 21 Sep 2016 14:48
Last Modified: 15 May 2022 22:11
DOI: 10.1186/s12917-016-0839-9
Open Access URL: http://bmcvetres.biomedcentral.com/articles/10.118...
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3003415