ub.xmlui.mirage2.page-structure.muninLogoub.xmlui.mirage2.page-structure.openResearchArchiveLogo
    • EnglishEnglish
    • norsknorsk
  • Velg spraakEnglish 
    • EnglishEnglish
    • norsknorsk
  • Administration/UB
View Item 
  •   Home
  • Det helsevitenskapelige fakultet
  • Institutt for medisinsk biologi
  • Artikler, rapporter og annet (medisinsk biologi)
  • View Item
  •   Home
  • Det helsevitenskapelige fakultet
  • Institutt for medisinsk biologi
  • Artikler, rapporter og annet (medisinsk biologi)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Isolated perfused working hearts provide valuable additional information during phenotypic assessment of the diabetic mouse heart

Permanent link
https://hdl.handle.net/10037/15015
DOI
https://doi.org/10.1371/journal.pone.0204843
Thumbnail
View/Open
article.pdf (5.494Mb)
Publisher`s version (PDF)
Date
2018-10-01
Type
Journal article
Tidsskriftartikkel
Peer reviewed

Author
Pedersen, Tina Myhre; Boardman, Neoma; Hafstad, Anne Dragøy; Aasum, Ellen
Abstract
Although murine models for studying the development of cardiac dysfunction in diabetes mellitus are well established, their reported cardiac phenotypes vary. These reported divergences may, in addition to the severity of different models, also be linked to the methods used for cardiac functional assessment. In the present study, we examined the functional changes using conventional transthoracic echocardiography (in vivo) and isolated heart perfusion techniques (ex vivo), in hearts from two mouse models; one with an overt type 2 diabetes (the db/db mouse) and one with a prediabetic state, where obesity was induced by a high-fat diet (HFD). Analysis of left ventricular function in the isolated working hearts from HFD-fed mice, suggested that these hearts develop diastolic dysfunction with preserved systolic function. Accordingly, in vivo examination demonstrated maintained systolic function, but we did not find parameters of diastolic function to be altered. In db/db mice, ex vivo working hearts showed both diastolic and systolic dysfunction. Although in vivo functional assessment revealed signs of diastolic dysfunction, the hearts did not display reduced systolic function. The contrasting results between ex vivo and in vivo function could be due to systemic changes that may sustain in vivo function, or a lack of sensitivity using conventional transthoracic echocardiography. Thus, this study demonstrates that the isolated perfused working heart preparation provides unique additional information related to the development of cardiomyopathy, which might otherwise go unnoticed when only using conventional echocardiographic assessment.
Description
Source at https://doi.org/10.1371/journal.pone.0204843.
Is part of
Pedersen, T.M. (2109). Cardiac remodelling in obesity- and angiotensin II-mediated heart failure: Morphological, functional and metabolic alterations (Doctoral thesis). https://hdl.handle.net/10037/31549.
Publisher
Public Library of Science
Citation
Pedersen, T.M., Boardman, N.T., Hafstad, A.D. & Aasum, E. (2018). Isolated perfused working hearts provide valuable additional information during phenotypic assessment of the diabetic mouse heart. PLoS ONE, 13(10), e0204843. https://doi.org/10.1371/journal.pone.0204843
Metadata
Show full item record
Collections
  • Artikler, rapporter og annet (medisinsk biologi) [1104]

Browse

Browse all of MuninCommunities & CollectionsAuthor listTitlesBy Issue DateBrowse this CollectionAuthor listTitlesBy Issue Date
Login

Statistics

View Usage Statistics
UiT

Munin is powered by DSpace

UiT The Arctic University of Norway
The University Library
uit.no/ub - munin@ub.uit.no

Accessibility statement (Norwegian only)