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Int J Mol Sci ; 19(5)2018 May 22.
Artigo em Inglês | MEDLINE | ID: mdl-29786646

RESUMO

Obesity is a complex disease associated with environmental and genetic factors. 3-Iodothyronamine (T1AM) has revealed great potential as an effective weight loss drug. We used metabolomics and associated transcriptional gene and protein expression analysis to investigate the tissue specific metabolic reprogramming effects of subchronic T1AM treatment at two pharmacological daily doses (10 and 25 mg/kg) on targeted metabolic pathways. Multi-analytical results indicated that T1AM at 25 mg/kg can act as a novel master regulator of both glucose and lipid metabolism in mice through sirtuin-mediated pathways. In liver, we observed an increased gene and protein expression of Sirt6 (a master gene regulator of glucose) and Gck (glucose kinase) and a decreased expression of Sirt4 (a negative regulator of fatty acids oxidation (FAO)), whereas in white adipose tissue only Sirt6 was increased. Metabolomics analysis supported physiological changes at both doses with most increases in FAO, glycolysis indicators and the mitochondrial substrate, at the highest dose of T1AM. Together our results suggest that T1AM acts through sirtuin-mediated pathways to metabolically reprogram fatty acid and glucose metabolism possibly through small molecules signaling. Our novel mechanistic findings indicate that T1AM has a great potential as a drug for the treatment of obesity and possibly diabetes.


Assuntos
Fármacos Antiobesidade/farmacologia , Proteínas Mitocondriais/genética , Obesidade/metabolismo , Sirtuínas/genética , Tironinas/farmacologia , Tecido Adiposo/efeitos dos fármacos , Tecido Adiposo/metabolismo , Animais , Fármacos Antiobesidade/uso terapêutico , Ácidos Graxos/metabolismo , Feminino , Quinases do Centro Germinativo , Glucose/metabolismo , Glicólise , Fígado/efeitos dos fármacos , Fígado/metabolismo , Camundongos , Proteínas Mitocondriais/metabolismo , Obesidade/tratamento farmacológico , Proteínas Serina-Treonina Quinases/genética , Proteínas Serina-Treonina Quinases/metabolismo , Sirtuínas/metabolismo , Tironinas/uso terapêutico
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