A new study, published in the June 11 issue of the journal Cell Reports, found that poly(ADP ribose), or PAR, a molecule once thought only to exist inside cells for the purpose of repairing DNA, is responsible for hardening (biomineralization) of the arteries. Additionally, using rats with chronic kidney disease, the study found that minocycline — a widely-prescribed antibiotic often used to treat acne — could treat hardening of the arteries...