GPT and neuromyelitis optica: BUN: Blood Urea Nitrogen, ALT: Alanine Amino Transferase, AST: Aspartate Amino Transferase, ESR: Erythrocyte Sedimentation Rate, CRP: C-Reactive Protein, MOG: Myelin Oligodendrocyte Glycoprotein, NMO: Neuromyelitis Optica, C3: Complement 3, dsDNA: Double-Stranded DNA, Anti-HCV: Antibodies Against Hepatitis C Virus, HbsAg: Antibodies Against Hepatitis B Surface Antigen