| Texto completo | |
| Autor(es): Mostrar menos - |
Gaspar, Rafael Calais
;
Macedo, Ana Paula Azevedo
;
Nakandakari, Susana Castelo Branco Ramos
;
Munoz, Vitor Rosetto
;
Abud, Gabriela Ferreira
;
Vieira, Renan Fudoli Lins
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de Sousa Neto, Ivo Vieira
;
Pavan, Isadora Carolina Betim
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da Silva, Luiz Guilherme Salvino
;
Simabuco, Fernando Moreira
;
da Silva, Adelino S. R.
;
Salgado Jr, Wilson Salgado
;
Marchini, Julio Sergio
;
Nonino, Carla Barbosa
;
Cintra, Dennys Esper
;
Ropelle, Eduardo Rochete
;
Pajvani, Utpal B.
;
de Freitas, Ellen Cristini
;
Pauli, Jose Rodrigo
Número total de Autores: 19
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| Tipo de documento: | Artigo Científico |
| Fonte: | LIVER INTERNATIONAL; v. 45, n. 4, p. 15-pg., 2025-04-01. |
| Resumo | |
Background and AimsNotch1 protein plays a significant role in hepatic metabolism, as evidenced by its correlation with insulin resistance in the livers of obese individuals, making it an intriguing research target. Therefore, this study aims to investigate the impact of aerobic exercise on Notch1 pathways in the hepatic tissue of obese mice and its role in controlling hepatic metabolism.MethodsTherefore, we conducted a cross-sectional study utilising liver biopsies from lean and obese humans, as well as an intervention study involving mice subjected to a high-fat diet. The obese-trained mice group underwent a treadmill-running protocol for 4 weeks.ResultsOur findings revealed that obese individuals exhibited increased NOTCH1 mRNA levels compared to lean subjects. The detrimental effects of Notch1 signalling were confirmed by Notch1-overexpressed HepG2 cell lines. Obese mice with higher hepatic Notch1 signalling demonstrated a reduction in this pathway when subjected to a 4-week treadmill running. Another benefit noticed in this trained group was the amelioration of insulin resistance, as well as a reduction in pyruvate intolerance and gluconeogenic enzymes. Additionally, we observed that these protective findings were accompanied by a decrease in mTORC1 pathway activity and lipid accumulation in the liver. Pharmacological inhibition of Notch1 in obese mice led to an increase in mitochondrial respiration in the liver.ConclusionsWe conclude that Notch1 signalling may be a potentially useful therapeutic target in obesity, while aerobic exercise training suppresses the Notch1 pathway in the liver, contributing to the regulation of hepatic glucose and lipid metabolism in obese mice. (AU) | |
| Processo FAPESP: | 17/20542-3 - Papel do exercício físico na regulação da proteína Notch1 em camundongos obesos: efeitos sobre a lipogênese e gliconeogênese hepática |
| Beneficiário: | Rafael Calais Gaspar |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 19/11338-9 - Efeitos do exercício físico sobre os receptores IP3 no fígado de camundongos obesos |
| Beneficiário: | Rafael Calais Gaspar |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Doutorado |
| Processo FAPESP: | 20/13443-1 - Implicações do exercício físico aeróbio sobre a via de sinalização da Notch 1 e regulação da lipogênese e gliconeogênese no fígado |
| Beneficiário: | José Rodrigo Pauli |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |