GSK3B and myocardial ischemia: Zhou et al. showed that KF (15 mmol/l, 10 min) improves myocardial ischemia by exerting antioxidant activity and inhibiting glycogen synthase kinase-3 beta (GSK-3β) activity in adult male Sprague-Dawley rats with myocardial ischemia/reperfusion (I/R) injury (247).