心臓専門医が語るCOVID-19ワクチンへの懸念と心筋細胞

These were scars that could never have been seen on an ECG, an echocardiogram, a cardiac MRI. So I'm greatly concerned now as a cardiologist that those cases that we see have sudden unexplained cardiac arrest, that in fact, the COVID vaccine may be a cause or a partial cause of what we're seeing.

And could you explain to our listeners what this term troponin leaks actually means? And even myself, I mean, I've studied biology, but certainly I'm quite ignorant as to how the heart develops as a muscle in terms of coding damage or recovering from that.

Well, the heart, let's just say broadly, the heart is constructed of a fiber skeleton and then contractile long muscle fibers called cardiomyocytes.

And there, there's a constitution of cells.

Now, a lot of people don't know this, but the largest population of cells in the heart are not the contractile muscle cells, but they're various support cells, what's called satellite cells.

But of the contractile apparatus of the heart, the cardiomyocytes, those muscle cells are loaded with proteins that actually allow the contraction to occur.

The big ones are myosin and actin.