Effects of Isovolumic Loading Elicited Either by 3-Branch or by 4-Branch Spring Expander on the Degree of Cardiac Atrophy of the Failing Heart in Rats After Heterotopic Heart Transplantation: No Evidence for Sex-Linked Differences

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023001%3A_____%2F25%3A00086053" target="_blank" >RIV/00023001:_____/25:00086053 - isvavai.cz</a>

Result on the web

<a href="https://www.biomed.cas.cz/physiolres/pdf/2025/74_729.pdf" target="_blank" >https://www.biomed.cas.cz/physiolres/pdf/2025/74_729.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.33549/physiolres.935650" target="_blank" >10.33549/physiolres.935650</a>

Result language

angličtina

Original language name

Effects of Isovolumic Loading Elicited Either by 3-Branch or by 4-Branch Spring Expander on the Degree of Cardiac Atrophy of the Failing Heart in Rats After Heterotopic Heart Transplantation: No Evidence for Sex-Linked Differences

Original language description

An important harmful side effect of the prolonged support of the left ventricle (LV) with an LV assist device (LVAD) in patients with advanced heart failure (HF) is development of cardiac atrophy. Our first aim was to evaluate if implantation of the four-branch spring expander into LV of the rat will exhibit greater attenuation of unloading-induced cardiac atrophy as compared with the three-branch spring expander. The second aim was to assess if sex-related differences are present in the development of unloading-induced cardiac atrophy in the failing hearts with implanted either three-branch or four-branch spring expander into the LV. Heterotopic heart transplantation in the rat (HTx) served as the model of heart unloading after LVAD implantation. HF was induced by volume overload achieved by creation of the aorto-caval fistula. The degree of cardiac atrophy was assessed as the weight ratio of the heterotopically transplanted heart to the control native heart. We found that enhancement of isovolumic loading by implantation of either type of spring expander into the LV reduced the degree of post-HTx cardiac atrophy in the failing hearts but the four-branch variant was significantly more effective. In addition, we found that there were no sex-related differences in the development of unloading-induced cardiac atrophy or in the attenuation of this process in the failing hearts. We propose that enhancing cardiac work by increasing isovolumic loading via implantation of the spring expander might be a reasonable approach to attenuate the unloading-induced cardiac atrophy in the failing hearts in both sexes.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

30105 - Physiology (including cytology)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physiological research

ISSN

0862-8408

e-ISSN

1802-9973

Volume of the periodical

74

Issue of the periodical within the volume

5

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

13

Pages from-to

729-741

UT code for WoS article

001631813000004

EID of the result in the Scopus database

2-s2.0-105020873953