Calmodulin inhibitors chlorpromazine and calmidazolium cause calcium overload and oxidative stress despite reducing peak density of CaV1.2 current in ventricular myocytes

Key Result

Calmodulin inhibitors chlorpromazine and calmidazolium cause calcium overload and oxidative stress despite reducing peak density of CaV1.2 current in ventricular myocytes.

Key Points

• This research aims to explore how calmodulin inhibitors affect calcium dynamics and oxidative stress in heart cells.
• Utilized calmodulin inhibitors chlorpromazine and calmidazolium in experiments
• Measured peak density of CaV1.2 current in ventricular myocytes
• Assessed levels of calcium overload and oxidative stress
• Both inhibitors reduced peak density of CaV1.2 current while causing significant calcium overload.
• Emergence of oxidative stress markers was observed following application of the inhibitors.
• Impairments in cellular function were noted despite the reduction in CaV1.2 current density.