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Daniels LJ, Macindoe C, Koutsifeli P, Annandale M, James SL, Watson LE, Coffey S, Raaijmakers AJA, Weeks KL, Bell JR, Janssens JV, Curl CL, Delbridge LMD, Mellor KM. Myocardial deformation imaging by 2D speckle tracking echocardiography for assessment of diastolic dysfunction in murine cardiopathology. Sci Rep 2023; 13:12344. [PMID: 37524893 PMCID: PMC10390581 DOI: 10.1038/s41598-023-39499-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 07/26/2023] [Indexed: 08/02/2023] Open
Abstract
Diastolic dysfunction is increasingly identified as a key, early onset subclinical condition characterizing cardiopathologies of rising prevalence, including diabetic heart disease and heart failure with preserved ejection fraction (HFpEF). Diastolic dysfunction characterization has important prognostic value in management of disease outcomes. Validated tools for in vivo monitoring of diastolic function in rodent models of diabetes are required for progress in pre-clinical cardiology studies. 2D speckle tracking echocardiography has emerged as a powerful tool for evaluating cardiac wall deformation throughout the cardiac cycle. The aim of this study was to examine the applicability of 2D speckle tracking echocardiography for comprehensive global and regional assessment of diastolic function in a pre-clinical murine model of cardio-metabolic disease. Type 2 diabetes (T2D) was induced in C57Bl/6 male mice using a high fat high sugar dietary intervention for 20 weeks. Significant impairment in left ventricle peak diastolic strain rate was evident in longitudinal, radial and circumferential planes in T2D mice. Peak diastolic velocity was similarly impaired in the longitudinal and radial planes. Regional analysis of longitudinal peak diastolic strain rate revealed that the anterior free left ventricular wall is particularly susceptible to T2D-induced diastolic dysfunction. These findings provide a significant advance on characterization of diastolic dysfunction in a pre-clinical mouse model of cardiopathology and offer a comprehensive suite of benchmark values for future pre-clinical cardiology studies.
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Affiliation(s)
- L J Daniels
- Cellular and Molecular Cardiology Laboratory, Department of Physiology, University of Auckland, Auckland, New Zealand
- Radcliffe Department of Medicine, OCDEM, University of Oxford, Oxford, UK
| | - C Macindoe
- Cellular and Molecular Cardiology Laboratory, Department of Physiology, University of Auckland, Auckland, New Zealand
| | - P Koutsifeli
- Cellular and Molecular Cardiology Laboratory, Department of Physiology, University of Auckland, Auckland, New Zealand
| | - M Annandale
- Cellular and Molecular Cardiology Laboratory, Department of Physiology, University of Auckland, Auckland, New Zealand
| | - S L James
- Cellular and Molecular Cardiology Laboratory, Department of Physiology, University of Auckland, Auckland, New Zealand
| | - L E Watson
- Cellular and Molecular Cardiology Laboratory, Department of Physiology, University of Auckland, Auckland, New Zealand
| | - S Coffey
- Department of Medicine, University of Otago, Dunedin, New Zealand
| | - A J A Raaijmakers
- Department of Anatomy and Physiology, University of Melbourne, Melbourne, Australia
| | - K L Weeks
- Department of Anatomy and Physiology, University of Melbourne, Melbourne, Australia
- Baker Department of Cardiometabolic Health, University of Melbourne, Melbourne, Australia
| | - J R Bell
- Department of Anatomy and Physiology, University of Melbourne, Melbourne, Australia
- Department of Microbiology, Anatomy, Physiology and Pharmacology, La Trobe University, Melbourne, Australia
| | - J V Janssens
- Department of Anatomy and Physiology, University of Melbourne, Melbourne, Australia
| | - C L Curl
- Department of Anatomy and Physiology, University of Melbourne, Melbourne, Australia
| | - L M D Delbridge
- Department of Anatomy and Physiology, University of Melbourne, Melbourne, Australia
| | - Kimberley M Mellor
- Cellular and Molecular Cardiology Laboratory, Department of Physiology, University of Auckland, Auckland, New Zealand.
- Department of Anatomy and Physiology, University of Melbourne, Melbourne, Australia.
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand.
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