Green tea polyphenols positively impact hepatic metabolism of adiponectin-knockout lean mice

Author(s)

Ferreira, Leticia Torres ^[1] ; Batista de Sousa Filho, Celso Pereira ^[1] ; Marinovic, Marcelo Paradiso ^[2] ; Rodrigues, Alice Cristina ^[2] ; Otton, Rosemari ^{[2, 1]}

Affiliation

^[1] Cruzeiro Univ, CBS, Interdisciplinary Postgrad Program Hlth Sci, Sao Paulo - Brazil

^[2] Univ Sao Paulo, Inst Biomed Sci, Dept Pharmacol, Sao Paulo - Brazil

• Document type: Journal article
• Source: Journal of Functional Foods; v. 64, JAN 2020.
• Web of Science Citations: 0

Abstract

Green tea (GT) has health benefits but the mechanism of its biological effects remains poorly known. Adiponectin has been considered a key adipocytokine for protection against hepatic lipid accumulation. We aimed to assess whether the effects of GT on hepatic lipid metabolism are mediated by adiponectin. For this purpose, we used wild-type lean mice and adiponectin-knockout mice fed with a standard diet and treated with 500 mg/kg of GT extract for 12 weeks. Adiponectin knockout mice had a slight increase in adiposity, and lipid synthesis while an impairment in insulin signaling. These effects were mitigated by GT supplementation independently of adiponectin. GT supplementation was able to stimulate energy expenditure, and oxidative lipid pathways (AdipoR2, SIRT1, AMPK and UCP2 expression) in an adiponectin independent-manner. These results indicate that the hepatoprotective effect of GT against lipid accumulation in non-alcoholic fatty liver disease can be partially mediated by adiponectin. (AU)

• FAPESP's process: 16/12059-8 - Investigation of adiponectin and beta-adrenergic pathway mediating the anti-obesity effects of green tea polyphenols
• Grantee: Rosemari Otton
• Support Opportunities: Regular Research Grants
• FAPESP's process: 15/24789-8 - MicroRNAs on adiponectin signalling: potential therapeutical targets of insulin resistance and insulin resistance linked diseases.
• Grantee: Alice Cristina Rodrigues
• Support Opportunities: Regular Research Grants
• FAPESP's process: 15/21785-1 - Epigenetic regulation: evaluation of miRNAs as potential therapeutic targets in non-alcoholic fatty liver disease (NAFLD) diet-induced obese mice treated with Camelia sinensis
• Grantee: Letícia Torres Ferreira
• Support Opportunities: Scholarships in Brazil - Master