TPO and acute kidney injury: ESR: erythrocyte sedimentation rate, MRI: magnetic resonance imaging, FLAIR: fluid-attenuated inversion recovery, CT: computed tomography, NMDAR: N-methyl-D-aspartate receptor, EEG: electroencephalography, CSF: cerebrospinal fluid, HSV: herpes simplex virus, TPO: thyroid peroxidase, GCS: Glasgow Coma Scale, AKI: acute kidney injury, IVIG: intravenous immunoglobulin, ICU: intensive care unit, IgG: immunoglobulin G