OBJECTIVE: Cardiomyocytes respond to stress with the expression of different heat shock proteins (HSP). HSP60 is induced by various stress factors. The aim of this study was to investigate the expression of HSP60 in human atrial fibrillation (AF). METHOD: Right atrial samples from 14 patients undergoing elective cardiac surgery were excised and immediately frozen in liquid nitrogen. Eight patients had chronic AF and six patients were in sinus rhythm. The HSP60 protein level was determined by SDS-PAGE, Western blot and quantified by optical densitometry according to the immunoreactive bands of actin. RESULTS: In myocardial samples from patients with chronic AF, we found a more than 2.5-fold increase in HSP60 expression compared to atrial myocardium of patients in sinus rhythm. CONCLUSION: This result indicates an up regulation of HSP60 in response to chronic atrial fibrillation.
OBJECTIVE: Cardiomyocytes respond to stress with the expression of different heat shock proteins (HSP). HSP60 is induced by various stress factors. The aim of this study was to investigate the expression of HSP60 in humanatrial fibrillation (AF). METHOD: Right atrial samples from 14 patients undergoing elective cardiac surgery were excised and immediately frozen in liquid nitrogen. Eight patients had chronic AF and six patients were in sinus rhythm. The HSP60 protein level was determined by SDS-PAGE, Western blot and quantified by optical densitometry according to the immunoreactive bands of actin. RESULTS: In myocardial samples from patients with chronic AF, we found a more than 2.5-fold increase in HSP60 expression compared to atrial myocardium of patients in sinus rhythm. CONCLUSION: This result indicates an up regulation of HSP60 in response to chronic atrial fibrillation.
Authors: Harm H Kampinga; Robert H Henning; Isabelle C van Gelder; Bianca J J M Brundel Journal: Cell Stress Chaperones Date: 2007 Impact factor: 3.667
Authors: Abhishek Maan; Neal W Jorgensen; Moussa Mansour; Samuel Dudley; Nancy S Jenny; Christopher Defilippi; Moyses Szklo; Alvaro Alonso; Marwan M Refaat; Jeremy Ruskin; Susan R Heckbert; E Kevin Heist Journal: Pacing Clin Electrophysiol Date: 2016-12-02 Impact factor: 1.976