Naslov
The relationship of plasma catestatin concentrations with the extension of left atrial fibrosis

Autori
Katić, Josip ; Sikirić, Ivan ; Brešković, Toni ; Jurišić, Zrinka ; Borovac, Josip Anđelo ; Anić, Ante

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, prošireni sažetak, znanstveni

Izvornik
EP Europace / - : Oxford Academic, 2023, I98-i99

Skup
EHRA 2023

Mjesto i datum
Barcelona, Španjolska, 16.04.2023. - 18.04.2023

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
atrial fibrillation ; catestatin ; left atrium ; atrial fibrosis ; low voltage zones ; cardiac remodeling

Sažetak
INTRODUCTION: Atrial fibrosis is increasingly considered an important part of vulnerable substrates, with an essential function in the induction of left atrial (LA) conduction abnormalities underlying the transition from paroxysmal (PAF) to persistent atrial fibrillation (PeAF), contributing to disease continuation. A substantial number of studies suggest a correlation between atrial fibrosis and low voltage zones (LVZ) (1). Previous studies have shown that catestatin (CST) regulates cardiac remodeling. The CST inhibition of catecholamine inhibits the Ang II­induced cell proliferation, and the extracellular matrix (ECM) downregulation to protect the heart from fibrosis produces similar results inhibition of catecholamine and the regulation of the beta­adrenergic receptors (β­ARs) (2). From the results, it is clear that CST inhibits cardiac fibrosis by regulating nitric oxide (NO) and the reactive oxygen species (ROS) pathways via inhibiting catecholamine release and influencing the production of the downstream molecule (2). PURPOSE: This study investigated the potential association of serum catestatin level and LA fibrosis in AF patients. METHODS: The current study enrolled 18 consecutive patients with PeAF who had undergone bipolar voltage mapping of the left atrium before catheter ablation. The proportion of the mapped LA surface exhibiting low voltage (<0.5mV) was expressed as a percentage of the overall mapped LA surface area. In all participants, fasting laboratory tests were drawn at admission. The primary outcome measure of the current study was the association of serum CST and low­voltage zones (%LVZ ≥ 10% as a reference for severe LVZ). RESULTS: The patient characteristics were summarized in Table 1. The LA was mildly dilated, and the median %LVZ was 4 (IQR 0.75­ 31.25). The lower degree of cardiac fibrosis (LVZ < 10%) is significantly associated with higher levels of catestatin compared to severe LVZ >10% (8.6 (interquartile range­IQR 4.6 – 25.0) vs. 21.9 (IQR 11.1­100.0), p= 0.040)(Figure 1). CONCLUSION: The higher catestatin level was associated with the lower extension of atrial fibrosis (low LA voltage zones).

Izvorni jezik
Engleski

Znanstvena područja
Kliničke medicinske znanosti

POVEZANOST RADA