TRPV1 activation prevents nonalcoholic fatty liver through UCP2 upregulation in mice

  • Li Li
  • Jing Chen
  • Yinxing Ni
  • Xiaoli Feng
  • Zhigang Zhao
  • Peijian Wang
  • Jing Sun
  • Hao Yu
  • Zhencheng Yan
  • Daoyan Liu
  • Bernd Nilius
  • Zhiming Zhu
Molecular and Cellular Mechanisms of Disease

DOI: 10.1007/s00424-012-1078-y

Cite this article as:
Li, L., Chen, J., Ni, Y. et al. Pflugers Arch - Eur J Physiol (2012) 463: 727. doi:10.1007/s00424-012-1078-y

Abstract

Nonalcoholic fatty liver is characterized by the fatty deformation and lipid deposition of hepatic parenchymal cells that are associated with cardiometabolic diseases. In this study, we report the effect of capsaicin on its receptor, transient receptor potential vanilloid 1 (TRPV1) cation channel, in preventing fatty liver formation. Functional TRPV1 has been detected in hepatocytes and liver tissues. TRPV1 activation by capsaicin reduced lipid accumulation and triglyceride level in the liver from wild-type (WT) mice. However, these effects were absent in the liver from TRPV1−/− mice. Chronic dietary capsaicin increased the hepatic uncoupling protein 2 (UCP2) expression in WT but not in TRPV1−/− mice (P < 0.01). We conclude that TRPV1 long-time activation might prevent high-fat diet-induced fatty liver in mice through upregulation of hepatic UCP2. Dietary capsaicin may represent a promising intervention in populations at high risk for fatty liver.

Keywords

Fatty liver Capsaicin TRPV1 UCP2 

Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  • Li Li
    • 1
  • Jing Chen
    • 1
  • Yinxing Ni
    • 1
  • Xiaoli Feng
    • 1
  • Zhigang Zhao
    • 1
  • Peijian Wang
    • 1
  • Jing Sun
    • 1
  • Hao Yu
    • 1
  • Zhencheng Yan
    • 1
  • Daoyan Liu
    • 1
  • Bernd Nilius
    • 2
  • Zhiming Zhu
    • 1
  1. 1.Center for Hypertension and Metabolic Diseases, Department of Hypertension and Endocrinology, Daping Hospital, Chongqing Institute of HypertensionThird Military Medical UniversityChongqingChina
  2. 2.Department of Molecular Cell Biology, Laboratory Ion Channel ResearchLeuvenBelgium