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Chronic administration of methionine and/or methionine sulfoxide alters oxidative stress parameters and ALA-D activity in liver and kidney of young rats

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Abstract

High levels of methionine (Met) and methionine sulfoxide (MetO) are found in several genetic abnormalities. Oxidative stress is involved in the pathophysiology of many inborn errors of metabolism. However, little is known about the role of oxidative damage in hepatic and renal changes in hypermethioninemia. We investigated the effect of chronic treatment with Met and/or MetO on oxidative stress parameters in liver and kidney, as lipid peroxidation (TBARS), total sulfhydryl content (SH), reactive oxygen species (ROS) and enzymes activities superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx) and delta aminolevulinic dehydratase (ALA-D). Serum biochemical parameters were evaluated. Wistar rats were treated daily with two subcutaneous injections of saline (control), Met (0.2–0.4 g/kg), MetO (0.05–0.1 g/kg) and the association between these (Met plus MetO) from the 6th to the 28th day of life. Our data demonstrated an increase of glucose and urea levels in all experimental groups. Cholesterol (MetO and Met plus MetO) were decreased and triglycerides (MetO) were increased. SOD (MetO and Met plus MetO) and CAT (Met, MetO and Met plus MetO) activities were decreased, while GPx was enhanced by MetO and Met plus MetO treatment in liver. In kidney, we observed a reduction of SH levels, SOD and CAT activities and an increase of TBARS levels in all experimental groups. ROS levels in kidney were increased in MetO and Met plus MetO groups. ALA-D activity was enhanced in liver (MetO and Met plus MetO) and kidney (Met plus MetO). These findings help to understand the pathophysiology of hepatic and renal alterations present in hypermethioninemia.

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Acknowledgments

The authors thank Hedy L. Hofmann for english revision.

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Correspondence to Francieli Moro Stefanello or Roselia Maria Spanevello.

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Funding

This study was supported in part by grants for Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Fundação Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES), Fundação de Amparo à Pesquisa do Rio Grande do Sul (FAPERGS) and Universidade Federal de Pelotas.

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The authors declare that they have no conflict of interest.

Ethical approval

All animal procedures were approved by the Committee of Ethics and Animal Experimentation of the Federal University of Pelotas, Brazil under protocol number: CEEA 3527.

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Handling Editor: H. Jakubowski.

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Soares, M.S.P., Oliveira, P.S., Debom, G.N. et al. Chronic administration of methionine and/or methionine sulfoxide alters oxidative stress parameters and ALA-D activity in liver and kidney of young rats. Amino Acids 49, 129–138 (2017). https://doi.org/10.1007/s00726-016-2340-y

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  • DOI: https://doi.org/10.1007/s00726-016-2340-y

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