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Banach Ł, Williams GT, Fossey JS. Insulin Delivery Using Dynamic Covalent Boronic Acid/Ester‐Controlled Release. ADVANCED THERAPEUTICS 2021. [DOI: 10.1002/adtp.202100118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Łukasz Banach
- School of Chemistry University of Birmingham Edgbaston Birmingham West Midlands B15 2TT UK
| | - George T. Williams
- School of Chemistry University of Birmingham Edgbaston Birmingham West Midlands B15 2TT UK
| | - John S. Fossey
- School of Chemistry University of Birmingham Edgbaston Birmingham West Midlands B15 2TT UK
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Pereira VAR, Vedovelli KS, Muller GY, Depieri YF, Avelar DHCG, de Amo AHE, Jimenes DR, Martins JNL, Silvério AC, Gomes CRG, Godoi VAF, Pedrosa MMD. Pros and cons of insulin administration on liver glucose metabolism in strength-trained healthy mice. ACTA ACUST UNITED AC 2019; 52:e7637. [PMID: 30698225 PMCID: PMC6345355 DOI: 10.1590/1414-431x20187637] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 11/08/2018] [Indexed: 11/22/2022]
Abstract
Non-diabetic individuals use hormones like insulin to improve muscle strength and performance. However, as insulin also leads the liver and the adipose tissue to an anabolic state, the purpose of this study was to investigate the effects of insulin on liver metabolism in trained non-diabetic Swiss mice. The mice were divided into four groups: sedentary treated with saline (SS) or insulin (SI) and trained treated with saline (TS) or insulin (TI). Training was made in a vertical stair, at 90% of the maximum load, three times per week. Insulin (0.3 U/kg body weight) or saline were given intraperitoneally five times per week. After eight weeks, tissue and blood were collected and in situ liver perfusion with glycerol+lactate or alanine+glutamine (4 mM each) was carried out. The trained animals increased their muscle strength (+100%) and decreased body weight gain (–11%), subcutaneous fat (–42%), mesenteric fat (–45%), and peritoneal adipocyte size (–33%) compared with the sedentary groups. Insulin prevented the adipose effects of training (TI). The gastrocnemius muscle had greater density of muscle fibers (+60%) and less connective tissue in the trained groups. Liver glycogen was increased by insulin (SI +40% and TI +117%), as well as liver basal glucose release (TI +40%). Lactate and pyruvate release were reduced to a half by training. The greater gluconeogenesis from alanine+glutamine induced by training (TS +50%) was reversed by insulin (TI). Insulin administration had no additional effect on muscle strength and reversed some of the lipolytic and gluconeogenic effects of the resistance training. Therefore, insulin administration does not complement training in improving liver glucose metabolism.
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Affiliation(s)
- V A R Pereira
- Programa de Pós-Graduação em Ciências Fisiológicas, Universidade Estadual de Maringá, Maringá, PR, Brasil
| | - K S Vedovelli
- Especialização em Fisiologia Humana, Departamento de Ciências Fisiológicas, Universidade Estadual de Maringá, Maringá, PR, Brasil
| | - G Y Muller
- Graduação em Educação Física, Universidade Estadual de Maringá, Maringá, PR, Brasil
| | - Y F Depieri
- Graduação em Medicina, Universidade Estadual de Maringá, Maringá, PR, Brasil
| | - D H C G Avelar
- Graduação em Educação Física, Centro Metropolitano de Maringá, Maringá, PR, Brasil
| | - A H E de Amo
- Graduação em Ciências Biológicas, Universidade Estadual de Maringá, Maringá, PR, Brasil
| | - D R Jimenes
- Especialização em Anatomia e Fisiologia, Departamento de Ciências Morfológicas, Universidade Estadual de Maringá, Maringá, PR, Brasil
| | - J N L Martins
- Programa de Pós-Graduação em Biologia Celular e Molecular, Universidade Estadual de Maringá, Maringá, PR, Brasil
| | - A C Silvério
- Graduação em Biotecnologia, Universidade Estadual de Maringá, Maringá, PR, Brasil
| | - C R G Gomes
- Departamento de Ciências Morfológicas, Universidade Estadual de Maringá, Maringá, PR, Brasil
| | - V A F Godoi
- Departamento de Ciências Fisiológicas, Universidade Estadual de Maringá, Maringá, PR, Brasil
| | - M M D Pedrosa
- Departamento de Ciências Fisiológicas, Universidade Estadual de Maringá, Maringá, PR, Brasil
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