Chinese Journal of Contemporary Neurology and Neurosurgery ›› 2020, Vol. 20 ›› Issue (10): 862-867. doi: 10.3969/j.issn.1672-6731.2020.10.004

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Analysis on clinical characteristics of anti-DPPX encephalitis

ZHOU Qin-ming1, CAI Yong2, NI You1, MENG Huan-yu1, SHI Hong-qin1, CHEN Sheng-di1, CHEN Sheng1   

  1. 1 Department of Neurology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200025, China;
    2 Department of Neurology, Binhai People's Hospital, Yancheng 224500, Jiangsu, China
  • Received:2020-09-29 Online:2020-10-25 Published:2020-10-30
  • Supported by:

    This study was supported by the National Natural Scienece Foundation of China (No.81671241).

抗二肽基肽酶样蛋白-6抗体脑炎

周勤明1, 蔡勇2, 倪优1, 孟环宇1, 石红琴1, 陈生弟1, 陈晟1   

  1. 1 200025 上海交通大学医学院附属瑞金医院神经科;
    2 224500 江苏省盐城市滨海县人民医院神经内科
  • 通讯作者: 陈晟,Email:mztcs@163.com;陈生弟,Email:ruijincsd@126.com
  • 基金资助:

    国家自然科学基金资助项目(项目编号:81671241)

Abstract:

Objective To summarize the clinical features of anti-dipeptidyl-peptidase-like protein-6 (DPPX) encephalitis. Methods and Results We presented a 36-year-old male patient with anti-DPPX encephilitis who developed with myoclonus, progressive memory loss, dyspnea and diarrhea. Antibody against DPPX was positive in his serum. 18F-fluoro-2-deoxy-D-glucose (18F-FDG) PET imaging indicated the hypometabolism in the bilateral temporal lobes. Then we reviewed the literatures about anti-DPPX encephalitis. A total of 7 articles with 36 cases were enrolled. We found that anti-DPPX encephalitis was common in male middle-aged patients with a chronic disease course. The clinical features of anti-DPPX encephalitis were myoclonus, tremor, cognitive dysfunction, automatic dysfunction, injury of brain stem or cerebellum and body weight loss. A small group of patients had underlying B cell neoplasms. DPPX antibody could be detected in the cerebrospinal fluid and serum of anti-DPPX encephalitis patients. The neuro-imaging often showed non-specific changes. The immunotherapy was effective in treating anti-DPPX encephalitis. It had a good prognosis. Conclusions Anti-DPPX encephalitis is rare, and it has complicated clinical manifestations. There are difficulties in the early and differential diagnosis. But it is usually responsive to the immunotherapy.

Key words: Encephalitis, Autoimmune diseases, Potassium channels,voltage-gated, Serology, Cerebrospinal fluid, Positron-emission tomography

摘要:

目的 总结抗二肽基肽酶样蛋白-6(DPPX)抗体脑炎之临床特征。方法与结果 36岁男性抗DPPX抗体脑炎患者临床表现为肌阵挛、进行性记忆力减退、呼吸困难和腹泻,实验室检查血清DPPX抗体阳性,18F-FDG PET提示双侧颞叶代谢减低。为进一步了解疾病特征,文献检索获得7篇国外文献计36例病例,经分析显示抗DPPX抗体脑炎以男性、中年好发,慢性病程;肌阵挛、震颤、认知功能障碍、自主神经功能失调、小脑或脑干损害及体重下降等为其主要症状与体征,可合并B细胞淋巴瘤;脑脊液或血清DPPX抗体呈阳性;无特异性影像学表现;治疗原则以免疫调节治疗为主,预后良好。结论 抗DPPX抗体脑炎临床罕见,症状复杂多样,早期诊断与鉴别诊断困难,早期予免疫调节治疗预后良好。

关键词: 脑炎, 自身免疫疾病, 钾通道, 电压门控, 血清学, 脑脊髓液, 正电子发射断层显像术