Upregulation of ATP-Sensitive Potassium Channels as the Potential Mechanism of Cardioprotection and Vasorelaxation Under the Action of Pyridoxal-5-Phosphate in Old Rats oleh Ruslan B. Strutynskyi PhD, DSc, Nataliіa A. Strutynska PhD, Oksana O. Piven PhD, DSc, Lidiia A. Mys PhD, Yulia V. Goshovska PhD, Raisa A. Fedichkina PhD, Iryna Y. Okhai (postgraduate), Vladyslav R. Strutynskyi PhD student, Victor E. Dosenko MD, PhD, DSc, Pawel Dobrzyn PhD, DSc, Vadim F. Sagach MD, PhD, DSc