Arrhythmias & electrophysiology

Long Noncoding RNA UCA1 Correlates With Electropathology in Patients With Atrial Fibrillation

JACC Clin ElectrophysiolPublished Mechanistic study

Authors' conclusion

LncRNAs SARRAH and LIPCAR are reduced in RAA of AF patients, and UCA1 levels correlate with electrophysiologic conduction abnormalities.

Study context

Population
Patients with paroxysmal or persistent atrial fibrillation (AF) and patients in sinus rhythm without AF; Long noncoding RNAs (lncRNAs) UCA1, SARRAH, LIPCAR measured by qRT-PCR in right atrial appendage and/or serum
Participants
59 / 56 / 70
Comparison
Paroxysmal AF (ParAF) and persistent AF (PerAF) vs SR
  • ParAFn = 59
  • PerAFn = 56
  • SRn = 70reference
Outcome
Association between 3 cardiac lncRNAs and the degree of electropathology
Methodological detailsSubset underwent high-resolution epicardial mapping during SR
  • Subset underwent high-resolution epicardial mapping during SR

Main finding

As reported in the abstract

  • SARRAH and LIPCAR expression decreased in right atrial appendage (RAA) of all AF patients vs SR
  • RAA UCA1 levels correlated significantly with % conduction block and delay, and inversely with conduction velocity

Further findings

Serum SARRAH and UCA1 levels

Increased in total AF group and ParAF vs SR

Original publication

Long Noncoding RNA UCA1 Correlates With Electropathology in Patients With Atrial Fibrillation. JACC Clin Electrophysiol. Published 24 May 2023. doi:10.1016/j.jacep.2023.02.018

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