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Related Experiment Videos

[Stimulation of the delta 1-receptors help to decrease reperfusion induced myocardial stunning].

L N Maslov1, Iu B Lishmanov

  • 1Institute of Cardiology, Tomsk Research Center, Siberian Division, Russian Academy of Medical Sciences, ul. Kievskaya 111, Tomsk, 634012 Russia. maslov@cardio.tsu.ru

Izvestiia Akademii Nauk. Seriia Biologicheskaia
|May 11, 2004
PubMed
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Administration of d-SKF 10,047, an omega 1 receptor agonist, enhances rat heart resistance to ischemia/reperfusion injury. This compound prevents cardiac stunning and improves left ventricular function without affecting arrhythmias.

Area of Science:

  • Cardiovascular Pharmacology
  • Myocardial Protection
  • Receptor Agonism

Context:

  • Ischemia/reperfusion (I/R) injury is a major cause of myocardial damage.
  • Understanding protective mechanisms against I/R injury is crucial for developing therapeutic strategies.
  • Omega receptors are implicated in various physiological processes, including potential roles in cardiac function.

Purpose:

  • To investigate the effects of the omega 1 receptor agonist d-SKF 10,047 on myocardial resistance to ischemia/reperfusion (I/R) injury.
  • To determine if omega receptor stimulation influences key indicators of cardiac function and damage post-I/R.
  • To assess the impact of omega receptor activation on reperfusion arrhythmias.

Summary:

  • Administration of d-SKF 10,047 (intravenously or in vitro) significantly increased the resistance of isolated perfused rat hearts to I/R injury.

Related Experiment Videos

  • Both in vivo and in vitro stimulation of omega receptors prevented the development of reperfusion contracture and reduced creatine kinase release.
  • Omega receptor activation improved left ventricular developed pressure, double product, and maximal rates of pressure change (+dP/dt and -dP/dt), while not significantly affecting reperfusion arrhythmias.

    • Impact:

    • Cardiac sigma receptor stimulation is proposed as a novel strategy to prevent myocardial stunning.
    • This finding suggests a potential therapeutic target for mitigating I/R injury in cardiovascular diseases.
    • The study highlights the protective role of omega receptors in maintaining cardiac function under stress conditions.