Elevated plasma homocysteine levels in anti-N-methyl-D-aspartate receptor encephalitis

Lizhi Liu, Jie Liang, Qing Liu, Chongliang Luo, Jia Liu, Rong Fan, Zhigang Chen, Yong Chen, Fuhua Peng, Ying Jiang

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


Objective: Homocysteine (Hcy) levels have been investigated in many diseases, such as neurodegenerative and autoimmune diseases. However, changes in Hcy levels in anti-N-Methyl-D-aspartate receptor (anti-NMDAR) encephalitis have not been investigated thus far. Methods: Case data were collected from 45 patients with anti-NMDAR encephalitis and 179 age- and sex-matched healthy controls (HCs). Clinical characteristics, Hcy levels, C reactive protein (CRP) levels, and cerebrospinal fluid (CSF) parameters were determined. Association of Hcy and clinical parameters were evaluated in these patients. Among these 45 patients, 15 had a follow-up evaluation at 3 months after treatment. Results: Hcy levels (p < 0.001) and CRP levels (p = 0.005) from the patients with anti-NMDAR encephalitis were significantly higher than those from HCs. Hcy levels from male patients were significantly lower than those from male HCs (p < 0.001). Comparing anti-NMDAR encephalitis patients after treatment with before treatment, the former has significantly higher Hcy levels (p = 0.004), CRP levels (p = 0.041) and mRS scores (p = 0.002). Furthermore, a significant negative correlation between the changes in Hcy levels and the changes in mRS scores (r = -0.534, p = 0.040) was observed. Conclusion: Elevated plasma homocysteine occurs in anti-NMDAR encephalitis, and seems associated with male sex.

Original languageEnglish
Article number464
JournalFrontiers in Neurology
Issue numberMAY
StatePublished - 2019


  • Anti-N-methyl-D-aspartate receptor encephalitis
  • C reactive protein
  • Cerebrospinal fluid
  • Homocysteine
  • Modified Rankin Scale


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