By Peter Loftus
The spike protein helps the virus gain entry into human cells to replicate. The mRNA vaccines are designed to cause the body to make a certain version of the spike protein, which then sets off an immune response.
The immune response includes neutralizing antibodies that target the spike protein and thereby block the virus’s ability to get inside cells and replicate. The immune response can protect a person against Covid-19 or lessen its severity if someone is exposed to the virus.
Yet there may be similarities between the spike protein and proteins found in the heart muscle, prompting the body’s immune defenses to mobilize against the heart, according to Biykem Bozkurt, a professor of medicine specializing in cardiology at Baylor College of Medicine in Houston.
Dr. Bozkurt says, “The antibodies against the spike protein may have the unintended effect of acting against heart proteins,” however, the doctor admits the “molecular mimicry” theory doesn’t explain why the issue isn’t more widely prevalent.
Dr. Bozkurt co-authored an American Heart Association study looking in to “Myocarditis With COVID-19 mRNA Vaccines” back in July.