HMGB1 Is Involved in the Protective Effect of the PPAR α Agonist Fenofibrate against Cardiac Hypertrophy.

Abstract:

:High mobility group box 1 (HMGB1) is a ubiquitous nuclear DNA-binding protein whose function is dependent on its cellular location. Extracellular HMGB1 is regarded as a delayed mediator of proinflammatory cytokines for initiating and amplifying inflammatory responses, whereas nuclear HMGB1 has been found to prevent cardiac hypertrophy and heart failure. Because fenofibrate, a peroxisome proliferator-activated receptor α (PPAR α ) agonist, has shown both protective effects against cardiac hypertrophy and inhibitory effects against inflammation, the potential modulation of HMGB1 expression and secretion by fenofibrate is of great interest. We herein provide evidence that fenofibrate modulates basal and LPS-stimulated HMGB1 expression and localization in addition to secretion of HMGB1 in cardiomyocytes. In addition, administration of fenofibrate to mice prevented the development of cardiac hypertrophy induced by thoracic transverse aortic constriction (TAC) while increasing levels of nuclear HMGB1. Altogether, these data suggest that fenofibrate may inhibit the development of cardiac hypertrophy by regulating HMGB1 expression, which provides a new potential strategy to treat cardiac hypertrophy.

journal_name

PPAR Res

journal_title

PPAR research

authors

Jia Z,Xue R,Liu G,Li L,Yang J,Pi G,Ma S,Kan Q

doi

10.1155/2014/541394

subject

Has Abstract

pub_date

2014-01-01 00:00:00

pages

541394

eissn

1687-4757

issn

1687-4765

journal_volume

2014

pub_type

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