Related Experiment Video
Updated: Mar 30, 2026

Isolation of Atrial Cardiomyocytes from a Rat Model of Metabolic Syndrome-related Heart Failure with Preserved Ejection Fraction
Published on: July 26, 2018
HALT & REVERSE: Hsf1 activators lower cardiomyocyt damage; towards a novel approach to REVERSE atrial fibrillation
Eva A H Lanters1, Denise M S van Marion2, Charles Kik3
1Department of Cardiology, Ba 579, Erasmus Medical Center, 's Gravendijkwal 230, 3015, CE, Rotterdam, The Netherlands. e.lanters@erasmusmc.nl.
Insights
This study investigates Heat Shock Proteins and atrial electropathology to understand atrial fibrillation progression. Findings may lead to new diagnostic tools for early atrial fibrillation recognition.
Area of Science:
- Cardiology
- Biochemistry
- Medical Research
Background:
- Atrial fibrillation (AF) is a progressive arrhythmia with unknown mechanisms driving recurrence.
- Heat Shock Proteins (HSPs), key to cardiomyocyte protein quality control, may mitigate AF progression by reducing atrial remodeling.
- The HALT & REVERSE study explores the link between HSPs, electropathology, and AF development/recurrence.
Purpose of the Study:
- To investigate the correlation between Heat Shock Protein levels and atrial electropathology.
- To assess the role of HSPs in AF progression following cardiac procedures.
- To identify potential novel diagnostic markers for early AF detection.
Main Methods:
- Prospective observational study with three groups: cardiothoracic surgery, pulmonary vein isolation (PVI), and electrical cardioversion (ECV).
- Intra-operative high-resolution epicardial (surgery) or endocardial (PVI) mapping to assess atrial electropathology.
- Blood and tissue samples collected for HSP analysis; AF recurrence monitored via continuous rhythm monitoring and Holter registration.
Main Results:
- Data on HSP levels and electropathology measurements were collected across study groups.
- Correlation analysis between HSP levels and degree of electropathology was performed.
- AF recurrence rates and timing post-procedure were documented.
Conclusions:
- The study aims to establish a correlation between HSP levels and the extent of atrial electropathology.
- Outcomes are expected to inform the development of new diagnostic tools for early clinical atrial fibrillation recognition.
Background:
Atrial fibrillation is a progressive arrhythmia, the exact mechanism underlying the progressive nature of recurrent AF episodes is still unknown. Recently, it was found that key players of the protein quality control system of the cardiomyocyte, i.e. Heat Shock Proteins, protect against atrial fibrillation progression by attenuating atrial electrical and structural remodeling (electropathology). HALT & REVERSE aims to investigate the correlation between electropathology, as defined by endo- or epicardial mapping, Heat Shock Protein levels and development or recurrence of atrial fibrillation following pulmonary vein isolation, or electrical cardioversion or cardiothoracic surgery.
Study Design:
This study is a prospective observational study. Three separate study groups are defined: (1) cardiothoracic surgery, (2) pulmonary vein isolation and (3) electrical cardioversion. An intra-operative high-resolution epicardial (group 1) or endocardial (group 2) mapping procedure of the atria is performed to study atrial electropathology. Blood samples for Heat Shock Protein determination are obtained at baseline and during the follow-up period at 3 months (group 2), 6 months (groups 1 and 2) and 1 year (group 1 and 2). Tissue samples of the right and left atrial appendages in patients in group 1 are analysed for Heat Shock Protein levels and for tissue characteristics. Early post procedural atrial fibrillation is detected by continuous rhythm monitoring, whereas late post procedural atrial fibrillation is documented by either electrocardiogram or 24-h Holter registration.
Conclusion:
HALT & REVERSE aims to identify the correlation between Heat Shock Protein levels and degree of electropathology. The study outcome will contribute to novel diagnostic tools for the early recognition of clinical atrial fibrillation.
Trial Registrations:
Rotterdam Medical Ethical Committee MEC-2014-393, Dutch Trial Registration NTR4658.
More Related Videos
08:05Optimization of Transesophageal Atrial Pacing to Assess Atrial Fibrillation Susceptibility in Mice
Published on: June 29, 2022
09:16Suppression of Pro-fibrotic Signaling Potentiates Factor-mediated Reprogramming of Mouse Embryonic Fibroblasts into Induced Cardiomyocytes
Published on: June 3, 2018
Related Concept Videos
Heart Failure Drugs: Inhibitors of Renin-Angiotensin System
Cardiomyopathy III: Hypertrophic Cardiomyopathy
Heart Failure V: Medical Management
Cardiomyopathy V: Interprofessional Care
Rheumatic Heart Disease I: Introduction
Pathophysiology of Heart Failure