Case Report
Copyright ©The Author(s) 2022. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Jun 26, 2022; 10(18): 6148-6155
Published online Jun 26, 2022. doi: 10.12998/wjcc.v10.i18.6148
Overlapping syndrome of recurrent anti-N-methyl-D-aspartate receptor encephalitis and anti-myelin oligodendrocyte glycoprotein demyelinating diseases: A case report
Xue-Jing Yin, Li-Fang Zhang, Li-Hua Bao, Zhi-Chao Feng, Jin-Hua Chen, Bing-Xia Li, Juan Zhang
Xue-Jing Yin, Zhi-Chao Feng, Department of Neurology, Changzhi Medical College, Changzhi 046000, Shanxi Province, China
Li-Fang Zhang, Li-Hua Bao, Jin-Hua Chen, Bing-Xia Li, Juan Zhang, Department of Neurology, Changzhi People's Hospital, Changzhi 046000, Shanxi Province, China
Author contributions: Yin XJ, Bao LH and Li BX, were the patient’s physician, reviewed the literature and contributed to manuscript drafting; Feng ZC and Zhang J performed and analyzed the magnetic resonance imaging; Zhang LF and Chen JH were responsible for the revision of the manuscript for important intellectual content; All authors issued final approval for the version to be submitted.
Supported by Health Commission of Shanxi Province Issued "Four Approval" Scientific and Technological Innovation Projects in 2020, No. 2020XM38.
Informed consent statement: Informed written consent was obtained from the patient for publication of this report and any accompanying images.
Conflict-of-interest statement: The authors declare that they have no conflict of interest.
CARE Checklist (2016) statement: The authors have read the CARE Checklist (2016), and the manuscript was prepared and revised according to the CARE Checklist (2016).
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: https://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Jinhua Chen, MM, Vice President, Chief Physician, Professor, Department of Neurology, Changzhi People's Hospital, No. 502 Changxing Middle Road, Changzhi 046000, Shanxi Province, China. cjhua0355@163.com
Received: October 26, 2021
Peer-review started: October 26, 2021
First decision: March 7, 2022
Revised: March 16, 2022
Accepted: April 30, 2022
Article in press: April 30, 2022
Published online: June 26, 2022
Abstract
BACKGROUND

Anti-N-methyl-D-aspartate receptor encephalitis (NMDARe) is capable of presenting a relapsing course and coexisting with myelin oligodendrocyte glycoprotein antibody disease, whereas it has been relatively rare. We describe a man with no history of tumor who successively developed anti-NMDARe and anti-myelin oligodendrocyte glycoprotein antibody disease.

CASE SUMMARY

A 29-year-old man was initially admitted with headache, fever, intermittent abnormal behavior, decreased intelligence, limb twitching and loss of consciousness on July 16, 2018. On admission, examination reported no abnormality. During his presentation, he experienced aggravated symptoms, and the re-examination of cranial magnetic resonance imaging (MRI) indicated punctate abnormal signals in the left parietal lobe. External examination of cerebrospinal fluid and serum results revealed serum NMDAR antibody (Ab) (-), cerebrospinal fluid NMDAR-Ab (+) 1:10 and Epstein-Barr virus capsid antigen antibody IgG (+). Due to the imaging findings, anti-NMDARe was our primary consideration. The patient was treated with methylprednisolone and gamma globulin pulse therapy, mannitol injection dehydration to reduce intracranial pressure, sodium valproate sustained-release tablets for anti-epilepsy and olanzapine and risperidone to mitigate psychiatric symptoms. The patient was admitted to the hospital for the second time for “abnormal mental behavior and increased limb movements” on December 14, 2018. Re-examination of electroencephalography and cranial MRI showed no abnormality. The results of autoimmune encephalitis antibody revealed that serum NMDAR-Ab was weakly positive and cerebrospinal fluid NMDAR-Ab was positive. Considering comprehensive recurrent anti-NMDARe, the patient was treated with propylene-hormone pulse combined with immunosuppressive agents (mycophenolate mofetil), and the symptoms were relieved. The patient was admitted for “hoarseness and double vision” for the third time on August 23, 2019. Re-examination of cranial MRI showed abnormal signals in the medulla oblongata and right frontal lobe, and synoptophore examination indicated concomitant esotropia. The patient’s visual acuity further decreased, and the re-examination of cranial MRI + enhancement reported multiple scattered speckled and patchy abnormal signals in the medulla oblongata, left pons arm, left cerebellum and right midbrain, thalamus. The patient was diagnosed with an accompanying demyelinating disease. Serum anti-myelin oligodendrocyte glycoprotein 1:10 and NMDAR antibody 1:10 were both positive. The patient was diagnosed with myelin oligodendrocyte glycoprotein antibody-related inflammatory demyelinating disease of the central nervous system complicated with anti-NMDARe overlap syndrome. The patient was successfully treated with methylprednisolone, gamma globulin pulse therapy and rituximab treatment. The patient remained asymptomatic and follow-up MRI scan 6 mo later showed complete removal of the lesion.

CONCLUSION

We emphasize the rarity of this antibody combination and suggest that these patients may require longer follow-up due to the risk of recurrence of two autoimmune disorders.

Keywords: Autoimmune encephalitis, Recurrent anti-N-methyl-D-aspartate receptor encephalitis, Myelin oligodendrocyte glycoprotein, Psoriasis, Case report

Core Tip: Here we present a man with autoimmune encephalitis in whom antibodies against N-methyl-D-aspartate receptor and myelin oligodendrocyte glycoprotein were sequentially detected. This is the first recurrent N-methyl-D-aspartate receptor encephalitis case in the literature for which antibodies of N-methyl-D-aspartate receptor and myelin oligodendrocyte glycoprotein were positive simultaneously and both supratentorial and infratentorial cranial magnetic resonance imaging were involved. Also, the patient responded very well with the optic nerve injury and encephalitis completely recovering. Psoriasis detected at the 6-mo follow-up may also be an immune-related disease, but the mechanism is unknown.