January 21, 1997Circulation
Physiological Effects of Adenoviral Gene Transfer of Sarcoplasmic Reticulum Calcium ATPase in Isolated Rat Myocytes
Why the study?
Does adenoviral gene transfer of SERCA2a improve intracellular calcium handling and contraction in isolated neonatal rat myocytes?
Population
Isolated neonatal rat myocytes
Design
Preclinical
Follow-up
48 hours
Authors
Discussion
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Implication
Enhances myocyte calcium handling in vitro; leaves open translation to human heart failure therapy.
Key Points
- This study aims to investigate the effects of adenoviral gene transfer of SERCA2a on calcium handling in rat myocardial cells.
- Developed a recombinant adenovirus (Ad.RSV.SERCA2a) to enhance SERCA2a expression.
- Examined the impact on neonatal rat myocytes at various multiplicities of infection (MOI) for up to 48 hours.
- Measured intracellular calcium transients and contraction parameters.
- Ad.RSV.SERCA2a significantly increased SERCA2a expression and activity compared to control (P<0.001).
- Calcium transients showed an abbreviated relaxation phase, increased peak calcium release, and decreased resting calcium levels.
- Enhancements in cell contraction were observed, with significant shortening measured in treated cells.
Structured PICO
Does adenoviral gene transfer of SERCA2a improve intracellular calcium handling and contraction in isolated neonatal rat myocytes?
P
Population
Isolated neonatal rat myocytes
I
Intervention
Recombinant adenovirus designed to over-express the cardiac SR Ca(2+)-ATPase (Ad.RSV.SERCA2a) at a multiplicity of infection (MOI) from 0.1 to 10.0 pfu/cell for 48 hours
O
Outcome
Intracellular calcium transients and myocardial cell contraction (shortening)surrogate
Adenovirus-mediated gene transfer of SERCA2a improves intracellular calcium handling and contraction in isolated rat myocytes, demonstrating potential for gene therapy strategies in heart failure.
Cite This Study
Hajjar et al. (1997) studied this question.