Presence of Intramyocardial Fat Tissue in the Right Atrium and Right Ventricle - Postmortem Human Analysis.

Abstract:

:Histologic and radiologic studies describe intramyocardial fat tissue as a normal finding or as part of cardiac pathology. The role of fat cells within the myocardium is not fully understood. The aim of this study was to assess fat tissue distribution in the myocardium of right atrium (RA) and right ventricle (RV) and age differences in subjects free from cardiac disease. The study included 10 males without cardiac disease divided into two groups according to age (below/above 50 years). Three cross sections were performed (RV free wall and apex and RA free wall) with histomorphological analysis on digital photographs. The shares of total myocardial fat (TMF), peri-vascular fat (PVF) and non-perivascular (nPVF) fat were calculated. Samples from the older group had larger amounts of fat in the epicardium and myocardium, without statistically significant differ-ence (TMF p=0.847, PVF p=0.4 and nPVF p=0.4). The largest quantities of fat tissue were found in the RV apex samples (14.9%), followed by RV free wall (7.5%) and RA (4.5%), where total apical RV fat share was significantly larger than in RA sample (p=0.044). Intramyocardial fat cells were present within the non-diseased RA and RV in all samples, mostly in the apex. Further investigations on age difference, effect of visceral obesity and sex differences are needed.

journal_name

Acta Clin Croat

journal_title

Acta clinica Croatica

authors

Selthofer-Relatić K,Belovari T,Bijelić N,Kibel A,Rajc J

doi

10.20471/acc.2018.57.01.15

subject

Has Abstract

pub_date

2018-03-01 00:00:00

pages

122-129

issue

1

eissn

0353-9466

issn

1333-9451

journal_volume

57

pub_type

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