Cardiac morphodynamic remodelling in the growing eel (Anguilla anguilla L.)

The Journal of Experimental Biology
Maria C CerraJosè M Icardo

Abstract

The morphodynamic changes occurring during growth were evaluated in the eel (Anguilla anguilla L.) heart. Using an in vitro working heart preparation, cardiac performance of small (body mass 96.76 +/- 27.49 g; mean +/- s.d.) and large (body mass 656 +/- 12 g; mean +/- s.d.) eels was compared under basal conditions and under loading (i.e. preload and afterload) challenges. A parallel morphometric evaluation of the ventricle was made using light and transmission electron microscope images. The small eel hearts show a basal cardiac output lower than their large counterparts (heart rate fh, 38.93 +/- 2.82 and 52.7 +/- 1.8 beats min(-1), respectively; stroke volume Vs, 0.27 +/- 0.017 and 0.37 +/- 0.016 ml kg(-1), respectively; means +/- s.e.m.). The two groups show similar responses at increasing preload, but differ remarkably at increasing afterload. Small eel hearts decreased Vs at afterload greater than 3 kPa, in contrast to larger hearts, which maintained constant Vs up to 6 kPa. These changes in mechanical performance are related to structural differences. Compared with the small eels, the large eels show an increase in the compacta thickness and in the diameter of the trabeculae in the spongiosa, together with reduction of the...Continue Reading

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Citations

Oct 2, 2013·General and Comparative Endocrinology·Sandra ImbrognoMaria Carmela Cerra
Apr 10, 2008·Biological Reviews of the Cambridge Philosophical Society·Göran E Nilsson, Sara Ostlund-Nilsson
Feb 3, 2016·Frontiers in Physiology·Adam N KeenHolly A Shiels
Apr 30, 2009·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·F GarofaloB Tota
Jun 13, 2006·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Filippo GarofaloMaria Carmela Cerra
Jan 18, 2018·Acta Physiologica·S ImbrognoA Gattuso
Mar 28, 2008·Journal of Experimental Zoology. Part A, Ecological Genetics and Physiology·Paul A CotterKenneth J Rodnick
Jul 14, 2005·Journal of Experimental Zoology. Part A, Comparative Experimental Biology·Josè M IcardoBruno Tota
May 16, 2019·The Journal of Experimental Biology·Rosa MazzaMaria Carmela Cerra
Nov 22, 2020·General and Comparative Endocrinology·Mariacristina FiliceSandra Imbrogno
Dec 9, 2020·Environmental Pollution·Mariacristina FiliceAlfonsina Gattuso
Sep 6, 2013·The Journal of Experimental Biology·Sandra Imbrogno
Mar 25, 2011·The Journal of Experimental Biology·Ida B JohansenOyvind Overli
Aug 30, 2021·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Mariacristina FiliceSandra Imbrogno

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