Increased phosphofructokinase protein expression in patients with myophosphorylase deficiency (McArdle’s disease).

McArdle’s disease is an autosomal recessive condition resulting in the absence of skeletal muscle phosphorylase. This condition places skeletal muscle under metabolic stress as evidenced by elevated creatine kinase activity in blood and muscle pain and cramping during mild to moderate exercise. We hypothesized that cellular adaptations would occur to compensate for the reduced glycogen flux including; enhanced glucose uptake/glycolytic flux and …