Dietary Vitamin D3 Restriction Exacerbates Disease Pathophysiology in the Spinal Cord of the G93A Mouse Model of Amyotrophic Lateral Sclerosis Abstract Background: Dietary vitamin D3 (D3) restriction reduces paw grip endurance and motor performance in G93A mice, and increases inflammation and apoptosis in the quadrÃceps of females. ALS, a neuromuscular disease, causes progressive degeneration of motor neurons in the brain and spinal...