In isolated cardiomyocytes (cardiac muscle cells), do both Moderna & Pfizer mRNA COVID vaccines induce specific dysfunctions that correlate pathophysiologically to cardiomyopathy? Yes! (Schreckenberg)

demonstrated that in isolated cardiomyocytes Moderna & Pfizer vaccine induced specific dysfunctions linked to damage to the heart. increased the risk of acute cardiac events

https://bpspubs.onlinelibrary.wiley.com/doi/epdf/10.1111/bph.16262

The key finding was that ‘in the first 24 h after application, both Moderna and Pfizer mRNA vaccines ‘caused neither functional disturbances nor morphological abnormalities. After 48 h, expression of the encoded spike protein was detected in ventricular cardiomyocytes for both mRNAs…

At this point in time, Moderna vaccine (added) induced arrhythmic as well as completely irregular contractions associated with irregular as well as localized calcium transients, which provide indications of significant dysfunction of the cardiac ryanodine receptor (RyR2).

…In contrast, BNT162b2 increased cardiomyocyte contraction via significantly increased protein kinase A (PKA) activity at the cellular level.’

Researchers ‘demonstrated for the first time, that in isolated cardiomyocytes, both mRNA-1273 and BNT162b2 induce specific dysfunctions that correlate pathophysiologically to cardiomyopathy. Both RyR2 impairment and sustained PKA activation may significantly increase the risk of acute cardiac events.’