Cardiac response to β-adrenergic stimulation determined by pressure-volume loop analysis
Determination of the cardiac function is a robust endpoint analysis in animal models of cardiovascular diseases in order to characterize effects of specific treatments on the heart. Due to the feasibility of genetic manipulations the mouse has become the most common mammalian animal model to study c...
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| Main Authors: | , , , , |
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| Format: | Article (Journal) Video |
| Language: | English |
| Published: |
May 19, 2021
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| In: |
JoVE. Video journal
Year: 2021, Issue: 171, Pages: 1-20 |
| ISSN: | 1940-087X |
| DOI: | 10.3791/62057 |
| Subjects: | |
| Online Access: | Resolving-System, lizenzpflichtig, Volltext: https://doi.org/10.3791/62057 Verlag, lizenzpflichtig, Volltext: https://www.jove.com/de/v/62057/cardiac-response-to-adrenergic-stimulation-determined-pressure-volume 
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| Author Notes: | Rebekka Medert, Lucas Bacmeister, Sebastian Segin, Marc Freichel, Juan E. Camacho Londoño |
MARC
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| 520 | |a Determination of the cardiac function is a robust endpoint analysis in animal models of cardiovascular diseases in order to characterize effects of specific treatments on the heart. Due to the feasibility of genetic manipulations the mouse has become the most common mammalian animal model to study cardiac function and to search for new potential therapeutic targets. Here we describe a protocol to determine cardiac function in vivo using pressure-volume loop measurements and analysis during basal conditions and under β-adrenergic stimulation by intravenous infusion of increasing concentrations of isoproterenol. We provide a refined protocol including ventilation support taking into account the positive end-expiratory pressure to ameliorate negative effects during open-chest measurements, and potent analgesia (Buprenorphine) to avoid uncontrollable myocardial stress evoked by pain during the procedure. All together the detailed description of the procedure and discussion about possible pitfalls enables highly standardized and reproducible pressure-volume loop analysis, reducing the exclusion of animals from the experimental cohort by preventing possible methodological bias. | ||
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