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Volume 33 Issue 5
October 2018
    Citation: Dong Liu, Xin Wang, Yisong Wang, Peigang Wang, Dongying Fan, Sichang Chen, Yuguang Guan, Tianfu Li, Jing An, Guoming Luan. Detection of EBV and HHV6 in the Brain Tissue of Patients with Rasmussen's Encephalitis .VIROLOGICA SINICA, 2018, 33(5) : 402-409.  http://dx.doi.org/10.1007/s12250-018-0063-9
    shu

    Detection of EBV and HHV6 in the Brain Tissue of Patients with Rasmussen's Encephalitis

    • 1.

      Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China

    • 2.

      Department of Microbiology, School of Basic Medical Science, Capital Medical University, Beijing 100069, China

    • 3.

      Department of Neurosurgery, Xuanwu Hospital of Capital Medical University, Beijing 100053, China

    • 4.

      Beijing Key Laboratory of Epilepsy, Beijing 100093, China

    • 5.

      Center of Epilepsy, Beijing Institute for Brain Disorders, Beijing 100093, China

    • Corresponding author: Jing An, anjing@ccmu.edu.cn, ORCID: 0000-0002-2946-7371
      Guoming Luan, luangm3@163.com, ORCID: 0000-0002-9674-6549
    • Received Date: 24 June 2018
      Accepted Date: 10 October 2018
      Published Date: 29 October 2018
      Available online: 01 October 2018
    • Rasmussen's encephalitis (RE) is a rare pediatric neurological disorder, and the exact etiology is not clear. Viral infection may be involved in the pathogenesis of RE, but conflicting results have reported. In this study, we evaluated the expression of both Epstein-Barr virus (EBV) and human herpes virus (HHV) 6 antigens in brain sections from 30 patients with RE and 16 control individuals by immunohistochemistry. In the RE group, EBV and HHV6 antigens were detected in 56.7% (17/ 30) and 50% (15/30) of individuals, respectively. In contrast, no detectable EBV and HHV6 antigen expression was found in brain tissues of the control group. The co-expression of EBV and HHV6 was detected in 20.0% (6/30) of individuals. In particular, a 4-year-old boy had a typical clinical course, including a medical history of viral encephalitis, intractable epilepsy, and hemispheric atrophy. The co-expression of EBV and HHV6 was detected in neurons and astrocytes in the brain tissue, accompanied by a high frequency of CD8+ T cells. Our results suggest that EBV and HHV6 infection and the activation of CD8+ T cells are involved in the pathogenesis of RE.
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      Detection of EBV and HHV6 in the Brain Tissue of Patients with Rasmussen's Encephalitis

        Corresponding author: Jing An, anjing@ccmu.edu.cn
        Corresponding author: Guoming Luan, luangm3@163.com
      • 1. Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing 100093, China
      • 2. Department of Microbiology, School of Basic Medical Science, Capital Medical University, Beijing 100069, China
      • 3. Department of Neurosurgery, Xuanwu Hospital of Capital Medical University, Beijing 100053, China
      • 4. Beijing Key Laboratory of Epilepsy, Beijing 100093, China
      • 5. Center of Epilepsy, Beijing Institute for Brain Disorders, Beijing 100093, China
      • Received Date: 24 June 2018
      • Accepted Date: 10 October 2018
      • Published Date: 29 October 2018

      Abstract: Rasmussen's encephalitis (RE) is a rare pediatric neurological disorder, and the exact etiology is not clear. Viral infection may be involved in the pathogenesis of RE, but conflicting results have reported. In this study, we evaluated the expression of both Epstein-Barr virus (EBV) and human herpes virus (HHV) 6 antigens in brain sections from 30 patients with RE and 16 control individuals by immunohistochemistry. In the RE group, EBV and HHV6 antigens were detected in 56.7% (17/ 30) and 50% (15/30) of individuals, respectively. In contrast, no detectable EBV and HHV6 antigen expression was found in brain tissues of the control group. The co-expression of EBV and HHV6 was detected in 20.0% (6/30) of individuals. In particular, a 4-year-old boy had a typical clinical course, including a medical history of viral encephalitis, intractable epilepsy, and hemispheric atrophy. The co-expression of EBV and HHV6 was detected in neurons and astrocytes in the brain tissue, accompanied by a high frequency of CD8+ T cells. Our results suggest that EBV and HHV6 infection and the activation of CD8+ T cells are involved in the pathogenesis of RE.

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