ERN1 and obesity due to melanocortin 4 receptor deficiency: Anti-obesity effect by ↓ body weight and visceral adipose tissue massRestored hepatic antioxidant capacity, serum lipid profile↓ Lipid accumulation, ↑ faecal fat excretion ↓ LXRα and SREBP1c, ↓ PERK and IRE1α ↑ PPARα expression