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Zhang H, Wang Y, Chen C, Xing W, Xia W, Fu W, Liu A, Zhang C, Guan Q, Zhao Y, Sun G, Lu D, Dong Z, Li Z, Zhou Y, Zhang S, Du Y, Zheng C, Xu D. A novel rapid visual nucleic acid detection technique for tick-borne encephalitis virus by combining RT-recombinase-aided amplification and CRISPR/Cas13a coupled with a lateral flow dipstick. Int J Biol Macromol 2024; 275:133720. [PMID: 38987000 DOI: 10.1016/j.ijbiomac.2024.133720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 07/04/2024] [Accepted: 07/05/2024] [Indexed: 07/12/2024]
Abstract
Tick-borne encephalitis virus (TBEV), a zoonotic pathogen, can cause severe neurological complications and fatal outcomes in humans. Early diagnosis of TBEV infection is crucial for clinical practice. Although serological assays are frequently employed for detection, the lack of antibodies in the early stages of infection and the cross-reactivity of antibodies limit their efficacy. Conventional molecular diagnostic methods such as RT-qPCR can achieve early and accurate identification but require specialized instrumentation and professionals, hindering their application in resource-limited areas. Our study developed a rapid and visual TBEV molecular detection method by combining RT-recombinase-aided amplification, the CRISPR/Cas13a system, and lateral flow dipsticks. The diagnostic sensitivity of this method is 50 CFU/ml, with no cross-reactivity with a variety of viruses. The detection can be carried out within 1 h at a temperature between 37 and 42 °C, and the results can be visually determined without the need for complex instruments and professionals. Subsequently, this assay was used to analyze clinical samples from 15 patients suspected of TBEV infection and 10 healthy volunteers, and its sensitivity and specificity reached 100 %, which was consistent with the results of RT-qPCR. These results indicate that this new method can be a promising point-of-care test for the diagnosis of tick-borne encephalitis.
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Affiliation(s)
- Han Zhang
- Department of Dermatology, First Medical Center of PLA General Hospital, Beijing 100853, China; Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Yanan Wang
- Department of Nuclear Medicine, Capital Medical University Electric Power Teaching Hospital (State Grid Beijing Electric Power Hospital), Beijing, 100073, China; Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Changguo Chen
- Department of Clinical Laboratory, Sixth Medical Center of PLA General Hospital, Beijing 100048, China
| | - Weiwei Xing
- Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Wenrong Xia
- Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Wenliang Fu
- Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Aijun Liu
- Department of Neurosurgery, First Medical Center of PLA General Hospital, Beijing 100853, China
| | - Chao Zhang
- Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Qun Guan
- Department of Disease Control and Prevention, Fifth Medical Center of PLA General Hospital, Beijing 100039, China
| | - Yongqi Zhao
- Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Gang Sun
- Department of Clinical Laboratory, Inner Mongolia Forestry General Hospital (Second Clinical Medical School of Inner Mongolia, University for the Nationalities), Hulunbeier, 022150, China
| | - Desheng Lu
- Department of Clinical Laboratory, Inner Mongolia Forestry General Hospital (Second Clinical Medical School of Inner Mongolia, University for the Nationalities), Hulunbeier, 022150, China
| | - Zhanzhu Dong
- Department of Clinical Laboratory, Inner Mongolia Forestry General Hospital (Second Clinical Medical School of Inner Mongolia, University for the Nationalities), Hulunbeier, 022150, China
| | - Zizhuo Li
- Department of Dermatology, First Medical Center of PLA General Hospital, Beijing 100853, China
| | - Yaguang Zhou
- Department of Dermatology, First Medical Center of PLA General Hospital, Beijing 100853, China
| | - Suli Zhang
- Department of Dermatology, First Medical Center of PLA General Hospital, Beijing 100853, China
| | - Yandan Du
- Department of Clinical Laboratory, Inner Mongolia Forestry General Hospital (Second Clinical Medical School of Inner Mongolia, University for the Nationalities), Hulunbeier, 022150, China.
| | - Chunfu Zheng
- Department of Microbiology, Immunology and Infectious Diseases, University of Calgary, Calgary, Alberta T2N 1N4, Canada.
| | - Donggang Xu
- Beijing Institute of Basic Medical Sciences, Beijing 100850, China.
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Tanaka D, Abe M, Kuroshima K, Ura S, Yoshida K, Yabe I. [A case of tick-borne encephalitis without any sequelae]. Rinsho Shinkeigaku 2021; 61:310-313. [PMID: 33867414 DOI: 10.5692/clinicalneurol.cn-001555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A 43-year-old woman with a history of tick bite in the mountains in Hokkaido presented with a fever of 39°C, headache, and nausea. Cerebrospinal fluid findings indicated meningitis. On day 3 after admission, she presented with restlessness, disturbance of consciousness, and ataxic breathing, indicative of encephalitis. We administered steroid pulse therapy, tracheal intubation, and a respirator. Her symptoms improved gradually and she was able to breathe without the respirator on day 10 after admission. She was discharged on day 24 after admission with no sequelae. This is the fifth reported case of tick-borne encephalitis in Japan. In the previous four cases, the patients died or suffered severe sequelae. This is the first case without any sequelae in Japan.
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Affiliation(s)
- Daiki Tanaka
- Department of Neurology, Japanese Red Cross Asahikawa Hospital
| | - Megumi Abe
- Department of Neurology, Japanese Red Cross Asahikawa Hospital
| | | | - Shigehisa Ura
- Department of Neurology, Japanese Red Cross Asahikawa Hospital
| | - Kazuto Yoshida
- Department of Neurology, Japanese Red Cross Asahikawa Hospital
| | - Ichiro Yabe
- Department of Neurology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University
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Yoshii K, Takahashi-Iwata I, Shirai S, Kobayashi S, Yabe I, Sasaki H. A Retrospective Epidemiological Study of Tick-Borne Encephalitis Virus in Patients with Neurological Disorders in Hokkaido, Japan. Microorganisms 2020; 8:microorganisms8111672. [PMID: 33126600 PMCID: PMC7692117 DOI: 10.3390/microorganisms8111672] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 10/24/2020] [Accepted: 10/27/2020] [Indexed: 12/30/2022] Open
Abstract
Tick-borne encephalitis (TBE) is a zoonotic disease that usually presents as a moderate febrile illness followed by severe encephalitis, and various neurological symptoms are observed depending on the distinct central nervous system (CNS) regions affected by the TBE virus (TBEV) infection. In Japan, TBE incidence is increasing and TBEV distributions are reported in wide areas, specifically in Hokkaido. However, an extensive epidemiological survey regarding TBEV has not been conducted yet. In this study, we conducted a retrospective study of the prevalence of antibodies against TBEV in patients with neurological disorders and healthy populations in a TBEV-endemic area in Hokkaido. Among 2000 patients, three patients with inflammatory diseases in the CNS had TBEV-specific IgM antibodies and neutralizing antibodies. The other four patients diagnosed clinically with other neurological diseases were positive for TBEV-specific IgG and neutralizing antibodies, indicating previous TBEV infection. In a total of 246 healthy residents in a TBEV-endemic region, one resident had TBEV-specific antibodies. These results demonstrated undiagnosed TBEV infections in Japan. Further surveys are required to reveal the actual epidemiological risk of TBE and to consider preventive measures, such as a vaccine program, for the control of TBE in Japan.
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Affiliation(s)
- Kentaro Yoshii
- Laboratory of Public Health, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan;
- National Research Center for the Control and Prevention of Infectious Diseases (CCPID), Nagasaki University, Nagasaki 852-8523, Japan
- Correspondence: ; Tel.: +81-98-819-8595
| | - Ikuko Takahashi-Iwata
- Department of Neurology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo 060-0818, Japan; (I.T.-I.); (S.S.); (I.Y.); (H.S.)
| | - Shinichi Shirai
- Department of Neurology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo 060-0818, Japan; (I.T.-I.); (S.S.); (I.Y.); (H.S.)
| | - Shintaro Kobayashi
- Laboratory of Public Health, Faculty of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan;
| | - Ichiro Yabe
- Department of Neurology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo 060-0818, Japan; (I.T.-I.); (S.S.); (I.Y.); (H.S.)
| | - Hidenao Sasaki
- Department of Neurology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo 060-0818, Japan; (I.T.-I.); (S.S.); (I.Y.); (H.S.)
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Riccardi N, Antonello RM, Luzzati R, Zajkowska J, Di Bella S, Giacobbe DR. Tick-borne encephalitis in Europe: a brief update on epidemiology, diagnosis, prevention, and treatment. Eur J Intern Med 2019; 62:1-6. [PMID: 30678880 DOI: 10.1016/j.ejim.2019.01.004] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 12/30/2018] [Accepted: 01/14/2019] [Indexed: 12/30/2022]
Abstract
Tick-borne encephalitis (TBE) is an emerging health threat that is spreading in many parts of Europe. The mix of socio-economical, ecological and climatic factors as well as the presence of more susceptible hosts is actively contributing to the increasing number of TBE reported cases. TBE is an important cause of central nervous system (CNS) infection that can result in long-term neurological sequelae and even death. Diagnosis of TBE relays mainly on high clinical suspicion confirmed by serological and molecular assays both on serum and cerebrospinal fluid (CSF) with an ancillary role for neuroimaging in supporting the diagnosis. No specific antiviral treatment is currently available for TBE; indeed, supportive treatment as well as intensive care and assisted ventilation in severe forms may be needed. Because of limited option for TBE treatment, of crucial importance is effective vaccination to prevent disease-related morbidity and mortality. Due to expanding proportion of subject possibly exposed to TBE (and new populations such as: unaware travellers to TBE-endemic areas and immunocompromised patients), we performed a comprehensive review of TBE epidemiology, clinical presentation, current available diagnostic tools and treatment.
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Affiliation(s)
- Niccolò Riccardi
- Infectious Diseases Unit, Ospedale Policlinico San Martino - IRCCS per l'Oncologia, Genoa, Italy; Department Health Science (DISSAL), University of Genoa, Genoa, Italy.
| | | | - Roberto Luzzati
- Infectious Diseases Department, Azienda Sanitaria Universitaria Integrata di Trieste, Trieste, Italy
| | - Joanna Zajkowska
- Department of Infectious Diseases and Neuroinfections, Medical University in Białystok, Poland
| | - Stefano Di Bella
- Infectious Diseases Department, Azienda Sanitaria Universitaria Integrata di Trieste, Trieste, Italy
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