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Supruniuk E, Żebrowska E, Maciejczyk M, Zalewska A, Chabowski A. Lipid peroxidation and sphingolipid alterations in the cerebral cortex and hypothalamus of rats fed a high-protein diet. Nutrition 2023; 107:111942. [PMID: 36621260 DOI: 10.1016/j.nut.2022.111942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 11/10/2022] [Accepted: 12/08/2022] [Indexed: 12/15/2022]
Abstract
OBJECTIVES High-protein diets (HPDs) are widely accepted to enhance satiety and energy expenditure and thus have become a popular strategy to lose weight and facilitate muscle protein synthesis. However, long-term high-protein consumption could be linked with metabolic and clinical problems such as renal and liver dysfunctions. This study verified the effects of 8-wk high-protein ingestion on lipid peroxidation and sphingolipid metabolism in the plasma, cerebral cortex, and hypothalamus in rats. METHODS Immunoenzymatic and spectrophotometric methods were applied to assess oxidation-reduction (redox) biomarkers and neutral sphingomyelinase activity, whereas gas-liquid chromatography and high-performance liquid chromatography were used to examine sphingolipid levels. RESULTS The vast majority of HPD-related alterations was restricted to the hypothalamus. Specifically, an increased rate of lipid peroxidation (increased lipid hydroperoxides, 8-isoprostanes, and thiobarbituric acid reactive substances) associated with ceramide accumulation via the activation of de novo synthesis (decreased sphinganine), salvage pathway (decreased sphingosine), and sphingomyelin hydrolysis (decreased sphingomyelin and increased neutral sphingomyelinase activity) was noted. CONCLUSIONS This study showed that HPD substantially affected hypothalamic metabolic pathways, which potentially alter cerebral output signals to the peripheral tissues.
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Affiliation(s)
- Elżbieta Supruniuk
- Department of Physiology, Medical University of Bialystok, Bialystok, Poland.
| | - Ewa Żebrowska
- Department of Physiology, Medical University of Bialystok, Bialystok, Poland.
| | - Mateusz Maciejczyk
- Department of Hygiene, Epidemiology and Ergonomics, Medical University of Bialystok, Bialystok, Poland.
| | - Anna Zalewska
- Department of Restorative Dentistry, Medical University of Bialystok, Bialystok, Poland; Independent Laboratory of Experimental Dentistry, Medical University of Bialystok, Bialystok, Poland.
| | - Adrian Chabowski
- Department of Physiology, Medical University of Bialystok, Bialystok, Poland.
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Castro AP, Silva KKS, Medeiros CSA, Alves F, Araujo RC, Almeida JA. Effects of 12 weeks of resistance training on rat gut microbiota composition. J Exp Biol 2021; 224:269165. [PMID: 34137868 DOI: 10.1242/jeb.242543] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 05/17/2021] [Indexed: 12/15/2022]
Abstract
In addition to its health benefits, exercise training has been noted as a modulator of the gut microbiota. However, the effects of resistance training (RT) on gut microbiota composition remain unknown. Wistar rats underwent 12 weeks of RT. Body mass, glucose tolerance, visceral body fat, triglyceride concentration and food consumption were evaluated. The gut microbiota was analyzed by 16S rRNA gene sequencing. Rats that underwent RT showed lower body mass (P=0.0005), lower fat content (P=0.02) and better glucose kinetics (P=0.047) when compared with the control. Improvements in the diversity and composition of the gut microbiota were identified in the RT group. The relative abundance of Pseudomonas, Serratia and Comamonas decreased significantly after 12 weeks of RT (P<0.001). These results suggest that RT has the potential to enhance the diversity of the gut microbiota and improve its biological functions.
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Affiliation(s)
- Alinne P Castro
- Catholic University Dom Bosco, Graduate Program in Biotechnology, Campo Grande, Mato Grosso do Sul 79117-900, Brazil
| | - Keemilyn K S Silva
- Exercise and Nutrition in Health and Sports Performance Research Group - PENSARE, Graduate Program in Movement Sciences, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil
| | - Claudia S A Medeiros
- Graduate Program in Health and Development in the Midwest Region, Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil
| | - Fernanda Alves
- Catholic University Dom Bosco, Graduate Program in Biotechnology, Campo Grande, Mato Grosso do Sul 79117-900, Brazil
| | - Ronaldo C Araujo
- Department of Biophysics, Federal University of São Paulo, São Paulo 04021-001, Brazil
| | - Jeeser A Almeida
- Exercise and Nutrition in Health and Sports Performance Research Group - PENSARE, Graduate Program in Movement Sciences, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil.,Graduate Program in Health and Development in the Midwest Region, Faculty of Medicine, Federal University of Mato Grosso do Sul, Campo Grande 79070-900, Brazil
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Medeiros CS, de Sousa Neto IV, Silva KKS, Cantuária APC, Rezende TMB, Franco OL, de Cassia Marqueti R, Freitas-Lima LC, Araujo RC, Yildirim A, Mackenzie R, Alves Almeida J. The Effects of High-Protein Diet and Resistance Training on Glucose Control and Inflammatory Profile of Visceral Adipose Tissue in Rats. Nutrients 2021; 13:1969. [PMID: 34201185 PMCID: PMC8227719 DOI: 10.3390/nu13061969] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 05/22/2021] [Accepted: 05/25/2021] [Indexed: 12/26/2022] Open
Abstract
High-protein diets (HPDs) are widely accepted as a way to stimulate muscle protein synthesis when combined with resistance training (RT). However, the effects of HPDs on adipose tissue plasticity and local inflammation are yet to be determined. This study investigated the impact of HPDs on glucose control, adipocyte size, and epididymal adipose inflammatory biomarkers in resistance-trained rats. Eighteen Wistar rats were randomly assigned to four groups: normal-protein (NPD; 17% protein total dietary intake) and HPD (26.1% protein) without RT and NPD and HPD with RT. Trained groups received RT for 12 weeks with weights secured to their tails. Glucose and insulin tolerance tests, adipocyte size, and an array of cytokines were determined. While HPD without RT induced glucose intolerance, enlarged adipocytes, and increased TNF-α, MCP-1, and IL1-β levels in epididymal adipose tissue (p < 0.05), RT diminished these deleterious effects, with the HPD + RT group displaying improved blood glucose control without inflammatory cytokine increases in epididymal adipose tissue (p < 0.05). Furthermore, RT increased glutathione expression independent of diet (p < 0.05). RT may offer protection against adipocyte hypertrophy, pro-inflammatory states, and glucose intolerance during HPDs. The results highlight the potential protective effects of RT to mitigate the maladaptive effects of HPDs.
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Affiliation(s)
- Claudia Stela Medeiros
- Programa de Pós-Graduação em Saúde e Desenvolvimento na Região Centro-Oeste, Faculdade de Medicina, Universidade Federal de Mato Grosso do Sul, Campo Grande 79070-900, Brazil;
| | - Ivo Vieira de Sousa Neto
- Laboratório de Análises Moleculares, Programa de Pós-Graduação em Ciências e Tecnologias em Saúde, Universidade de Brasília, Distrito Federal 72220-275, Brazil; (I.V.d.S.N.); (R.d.C.M.)
| | - Keemilyn Karla Santos Silva
- Research in Exercise and Nutrition in Health and Sports Performance—PENSARE, Graduate Program in Movement Sciences, Universidade Federal de Mato Grosso do Sul, Campo Grande 79070-900, Brazil;
| | - Ana Paula Castro Cantuária
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Distrito Federal 70790-160, Brazil; (A.P.C.C.); (T.M.B.R.); (O.L.F.)
- Programa de Pós-Graduação em Ciências da Saúde, Universidade de Brasília, Distrito Federal 70910-900, Brazil
| | - Taia Maria Berto Rezende
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Distrito Federal 70790-160, Brazil; (A.P.C.C.); (T.M.B.R.); (O.L.F.)
- Programa de Pós-Graduação em Ciências da Saúde, Universidade de Brasília, Distrito Federal 70910-900, Brazil
| | - Octávio Luiz Franco
- Centro de Análises Proteômicas e Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Distrito Federal 70790-160, Brazil; (A.P.C.C.); (T.M.B.R.); (O.L.F.)
- S-Inova Biotech, Porgrama de Pós-Graduação em Biotecnologia, Universidade Católica Dom Bosco, Campo Grande 79117-900, Brazil
| | - Rita de Cassia Marqueti
- Laboratório de Análises Moleculares, Programa de Pós-Graduação em Ciências e Tecnologias em Saúde, Universidade de Brasília, Distrito Federal 72220-275, Brazil; (I.V.d.S.N.); (R.d.C.M.)
| | - Leandro Ceotto Freitas-Lima
- Departamento de Biofísica, Universidade Federal de São Paulo, São Paulo 04039-032, Brazil; (L.C.F.-L.); (R.C.A.)
| | - Ronaldo Carvalho Araujo
- Departamento de Biofísica, Universidade Federal de São Paulo, São Paulo 04039-032, Brazil; (L.C.F.-L.); (R.C.A.)
| | - Azize Yildirim
- Department of Life Science, Whitelands College, University of Roehampton, London SW15 4DJ, UK; (A.Y.); (R.M.)
| | - Richard Mackenzie
- Department of Life Science, Whitelands College, University of Roehampton, London SW15 4DJ, UK; (A.Y.); (R.M.)
| | - Jeeser Alves Almeida
- Programa de Pós-Graduação em Saúde e Desenvolvimento na Região Centro-Oeste, Faculdade de Medicina, Universidade Federal de Mato Grosso do Sul, Campo Grande 79070-900, Brazil;
- Research in Exercise and Nutrition in Health and Sports Performance—PENSARE, Graduate Program in Movement Sciences, Universidade Federal de Mato Grosso do Sul, Campo Grande 79070-900, Brazil;
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