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Poussier L, Mailles A, Tattevin P, Stahl JP, Fillâtre P. Characteristics, management and outcome of Herpes Simplex and Varicella-Zoster virus encephalitis: a multicentre prospective cohort study. Clin Microbiol Infect 2024; 30:917-923. [PMID: 38527616 DOI: 10.1016/j.cmi.2024.03.017] [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: 11/08/2023] [Revised: 03/03/2024] [Accepted: 03/13/2024] [Indexed: 03/27/2024]
Abstract
OBJECTIVE To characterize differences between Herpes Simplex virus encephalitis and Varicella-Zoster virus encephalitis (HSVE and VZVE) and other aetiologies of infectious encephalitis (IE), and to investigate the impact of time-to-aciclovir (ACV) start, ACV dose and duration on outcome. METHODS We compared 132 HSVE, 65 VZVE and 297 other IE enrolled in a prospective cohort (ENCEIF). We estimated associations between time-to-ACV start, dose or duration and outcome through adjusted odds ratio (aOR) using logistic regression analysis. RESULTS Prevalence of immunodepression differed among aetiologies: 15/65 (23%) for VZVE, 13/132 (10%) for HSVE and 30/297 (10%) for other IE (p <0.05), as was presence of seizure at admission: 27/132 (20%) for HSVE, 4/65 (6%) for VZVE and 43/297 (14%) for other IE (p <0.05). Poor outcome at hospital discharge (Glasgow outcome scale ≤3) differed among the three groups: 40/127 (31%) for HSVE, 12/65 (18%) for VZVE and 38/290 (13%) for other IE (p <0.05). Time-to-ACV start was associated with outcome in HSVE (aOR 3.61 [1.25-10.40]), but not in VZVE (aOR 0.84 [0.18-3.85]). Increased ACV dose was not associated with outcome among HSVE (aOR 1.25 [0.44-3.64]) nor VZVE (aOR 1.16 [0.24-5.73]). DISCUSSION HSVE and VZVE are distinct in clinical presentation, outcome and prognostic factors. The impact of early ACV initiation was more apparent for HSVE than for VZVE; however, this could be because of VZVE's smaller sample size and lower outcome rate leading to low statistical power or because of potential distinct IE pathophysiology.
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Affiliation(s)
- Léa Poussier
- Infectious Diseases and Intensive Care Unit, CHU Pontchaillou, Rennes, France; INSERM, CIC 1414, Rennes, France
| | | | - Pierre Tattevin
- Infectious Diseases and Intensive Care Unit, CHU Pontchaillou, Rennes, France; INSERM, CIC 1414, Rennes, France
| | - Jean-Paul Stahl
- Infectious Diseases Department, University Grenoble Alpes, Grenoble, France
| | - Pierre Fillâtre
- INSERM, CIC 1414, Rennes, France; Intensive Care Unit, Yves Le Foll Hospital, Saint Brieuc, France.
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Platz IL, Tetens MM, Dessau R, Ellermann-Eriksen S, Andersen NS, Jensen VVS, Østergaard C, Bodilsen J, Søgaard KK, Bangsborg J, Nielsen ACY, Møller JK, Lebech AM, Omland LH, Obel N. Characteristics and long-term prognosis of Danish residents with a positive intrathecal antibody index test for herpes simplex virus or varicella-zoster virus compared with individuals with a positive cerebrospinal fluid PCR: a nationwide cohort study. Clin Microbiol Infect 2024; 30:240-246. [PMID: 37967615 DOI: 10.1016/j.cmi.2023.11.004] [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: 07/31/2023] [Revised: 11/06/2023] [Accepted: 11/07/2023] [Indexed: 11/17/2023]
Abstract
OBJECTIVES We compared characteristics and outcomes of individuals who in the cerebrospinal fluid (CSF) were positive for herpes simplex virus (HSV) or varicella-zoster virus (VZV)-intrathecal antibody index test ([AI]-positive) vs. individuals who were PCR-positive for HSV type 1 (HSV1), type 2 (HSV2), and for VZV. METHODS Nationwide cohort study of all Danish residents with positive CSF-AI or -PCR for HSV or VZV (1995-2021). We calculated short- and long-term risks as age-, sex-, and comorbidity-adjusted odds ratios (aOR), adjusted hazard ratios (aHR), and absolute risk differences with 95% CIs. RESULTS Compared with individuals with positive PCR for HSV1 (n = 321), HSV2 (n = 497), and VZV (n = 1054), individuals with a positive AI for HSV (n = 177) and VZV (n = 219) had CSF pleocytosis less frequently (leucocyte count >10/μL: HSV-AI: 39%, VZV-AI: 52%, HSV1-PCR: 81%, HSV2-PCR: 92%, VZV-PCR: 83%), and were less frequently diagnosed with central nervous system infection ([aOR {95%CI}]: HSV-AI vs. HSV1-PCR: [0.1 {0.1, 0.2}], HSV-AI vs. HSV2-PCR: [0.1 {0.0, 0.1}], VZV-AI vs. VZV-PCR: [0.2 {0.2, 0.3}]). Individuals with a positive HSV-AI or VZV-AI had increased risk of demyelinating disease ([aOR {95%CI}; aHR {95%CI}]: HSV-AI vs. HSV1-PCR: [4.6 {0.9, 24.5}; aHR not applicable], HSV-AI vs. HSV2-PCR: [10.4 {2.3, 45.9}; 12.4 {2.3, 66.0}], VZV-AI vs. VZV-PCR: [aOR not applicable; 10.3 {1.8, 58.8}]). Disability pension was less frequent among HSV-AI than HSV1-PCR cohort members (5-year risk difference: -23.6%, 95%CI: -35.2, -11.8), and more frequent among VZV-AI than VZV-PCR cohort members (5-year risk difference: 16.8%, 95%CI: 5.0, 28.7). DISCUSSION AI-positive individuals differ from PCR-positive individuals in several aspects. AI appears unspecific for current central nervous system infections.
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Affiliation(s)
- Isabella L Platz
- Department of Infectious Diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark.
| | - Malte M Tetens
- Department of Infectious Diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Ram Dessau
- Department of Clinical Microbiology, Zealand University Hospital, Slagelse, Denmark; Department of Regional Health Research, University of Southern Denmark, Odense, Denmark
| | | | - Nanna S Andersen
- Department of Clinical Microbiology, Odense University Hospital, Odense, Denmark; Research Unit of Clinical Microbiology, University of Southern Denmark, Odense, Denmark
| | | | - Christian Østergaard
- Department of Clinical Microbiology, Copenhagen University Hospital - Hvidovre Hospital, Copenhagen, Denmark
| | - Jacob Bodilsen
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark; Department of Infectious Diseases, Aalborg University Hospital, Aalborg, Denmark
| | - Kirstine Kobberøe Søgaard
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark; Department of Clinical Microbiology, Aalborg University Hospital, Aalborg, Denmark
| | - Jette Bangsborg
- Department of Clinical Microbiology, Copenhagen University Hospital - Herlev Hospital, Herlev, Denmark
| | - Alex Christian Yde Nielsen
- Department of Clinical Microbiology, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Jens Kjølseth Møller
- Department of Clinical Microbiology, Vejle Hospital, University Hospital of Southern Denmark, Vejle, Denmark
| | - Anne-Mette Lebech
- Department of Infectious Diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark; Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Lars Haukali Omland
- Department of Infectious Diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark
| | - Niels Obel
- Department of Infectious Diseases, Copenhagen University Hospital - Rigshospitalet, Copenhagen, Denmark; Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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3
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Worku DA. Tick-Borne Encephalitis (TBE): From Tick to Pathology. J Clin Med 2023; 12:6859. [PMID: 37959323 PMCID: PMC10650904 DOI: 10.3390/jcm12216859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/19/2023] [Accepted: 10/25/2023] [Indexed: 11/15/2023] Open
Abstract
Tick-borne encephalitis (TBE) is a viral arthropod infection, endemic to large parts of Europe and Asia, and is characterised by neurological involvement, which can range from mild to severe, and in 33-60% of cases, it leads to a post-encephalitis syndrome and long-term morbidity. While TBE virus, now identified as Orthoflavivirus encephalitidis, was originally isolated in 1937, the pathogenesis of TBE is not fully appreciated with the mode of transmission (blood, tick, alimentary), viral strain, host immune response, and age, likely helping to shape the disease phenotype that we explore in this review. Importantly, the incidence of TBE is increasing, and due to global warming, its epidemiology is evolving, with new foci of transmission reported across Europe and in the UK. As such, a better understanding of the symptomatology, diagnostics, treatment, and prevention of TBE is required to inform healthcare professionals going forward, which this review addresses in detail. To this end, the need for robust national surveillance data and randomised control trial data regarding the use of various antivirals (e.g., Galidesivir and 7-deaza-2'-CMA), monoclonal antibodies, and glucocorticoids is required to improve the management and outcomes of TBE.
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Affiliation(s)
- Dominic Adam Worku
- Infectious Diseases, Morriston Hospital, Heol Maes Eglwys, Morriston, Swansea SA6 6NL, UK;
- Public Health Wales, 2 Capital Quarter, Cardiff CF10 4BZ, UK
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Petersen PT, Bodilsen J, Jepsen MPG, Larsen L, Storgaard M, Hansen BR, Helweg-Larsen J, Wiese L, Lüttichau HR, Andersen CØ, Nielsen H, Brandt CT. Clinical features and prognostic factors in adults with viral meningitis. Brain 2023; 146:3816-3825. [PMID: 36929167 PMCID: PMC10473559 DOI: 10.1093/brain/awad089] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Revised: 02/08/2023] [Accepted: 02/25/2023] [Indexed: 03/18/2023] Open
Abstract
Clinical features applicable to the entire spectrum of viral meningitis are limited, and prognostic factors for adverse outcomes are undetermined. This nationwide population-based prospective cohort study included all adults with presumed and microbiologically confirmed viral meningitis in Denmark from 2015 until 2020. Prognostic factors for an unfavourable outcome (Glasgow Outcome Scale score of 1-4) 30 days after discharge were examined by modified Poisson regression. In total, 1066 episodes of viral meningitis were included, yielding a mean annual incidence of 4.7 episodes per 100 000 persons. Pathogens were enteroviruses in 419/1066 (39%), herpes simplex virus type 2 in 171/1066 (16%), varicella-zoster virus in 162/1066 (15%), miscellaneous viruses in 31/1066 (3%) and remained unidentified in 283/1066 (27%). The median age was 33 years (IQR 27-44), and 576/1066 (54%) were females. In herpes simplex virus type 2 meningitis, 131/171 (77%) were females. Immunosuppression [32/162 (20%)] and shingles [90/149 (60%)] were frequent in varicella-zoster virus meningitis. The triad of headache, neck stiffness and hyperacusis or photophobia was present in 264/960 (28%). The median time until lumbar puncture was 3.0 h (IQR 1.3-7.1), and the median CSF leucocyte count was 160 cells/µl (IQR 60-358). The outcome was unfavourable in 216/1055 (20%) 30 days after discharge. Using unidentified pathogen as the reference, the adjusted relative risk of an unfavourable outcome was 1.34 (95% CI 0.95-1.88) for enteroviruses, 1.55 (95% CI 1.00-2.41) for herpes simplex virus type 2, 1.51 (95% CI 0.98-2.33) for varicella-zoster virus and 1.37 (95% CI 0.61-3.05) for miscellaneous viruses. The adjusted relative risk of an unfavourable outcome was 1.34 (95% CI 1.03-1.75) for females. Timing of acyclovir or valacyclovir was not associated with the outcome in meningitis caused by herpes simplex virus type 2 or varicella-zoster virus. In summary, the outcome of viral meningitis was similar among patients with different aetiologies, including those with presumed viral meningitis but without an identified pathogen. Females had an increased risk of an unfavourable outcome. Early antiviral treatment was not associated with an improved outcome in meningitis caused by herpes simplex virus type 2 or varicella-zoster virus.
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Affiliation(s)
- Pelle Trier Petersen
- Department of Pulmonary and Infectious Diseases, Nordsjællands Hospital, 3400 Hillerød, Denmark
- Faculty of Health and Medical Sciences, University of Copenhagen, 2200 Copenhagen, Denmark
| | - Jacob Bodilsen
- Department of Infectious Diseases, Aalborg University Hospital, 9000 Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, 9000 Aalborg, Denmark
| | | | - Lykke Larsen
- Department of Infectious Diseases, Odense University Hospital, 5000 Odense, Denmark
| | - Merete Storgaard
- Department of Infectious Diseases, Aarhus University Hospital, 8200 Aarhus, Denmark
| | | | | | - Lothar Wiese
- Department of Medicine, Sjællands University Hospital, 4000 Roskilde, Denmark
| | | | | | - Henrik Nielsen
- Department of Infectious Diseases, Aalborg University Hospital, 9000 Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, 9000 Aalborg, Denmark
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Abbuehl LS, Hofmann E, Hakim A, Dietmann A. Can we forecast poor outcome in herpes simplex and varicella zoster encephalitis? A narrative review. Front Neurol 2023; 14:1130090. [PMID: 37435162 PMCID: PMC10331601 DOI: 10.3389/fneur.2023.1130090] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 05/31/2023] [Indexed: 07/13/2023] Open
Abstract
Herpes simplex virus (HSV) and varicella zoster virus (VZV) are among the most commonly diagnosed infectious causes of sporadic encephalitis worldwide. Despite treatment, mortality and morbidity rates remain high, especially for HSV encephalitis. This review is intended to provide an overview of the existing scientific literature on this topic from the perspective of a clinician who is confronted with serious decisions about continuation or withdrawal of therapeutic interventions. We performed a literature review searching two databases and included 55 studies in the review. These studies documented or investigated specifically outcome and predictive parameters of outcome of HSV and/or VZV encephalitis. Two reviewers independently screened and reviewed full-text articles meeting the inclusion criteria. Key data were extracted and presented as a narrative summary. Both, HSV and VZV encephalitis have mortality rates between 5 and 20% and complete recovery rates range from 14 to 43% for HSV and 33 to 49% for VZV encephalitis. Prognostic factors for both VZV and HSV encephalitis are older age and comorbidity, as well as severity of disease and extent of magnetic resonance imaging (MRI) lesions on admission, and delay in treatment initiation for HSV encephalitis. Although numerous studies are available, the main limiting factors are the inconsistent patient selection and case definitions as well as the non-standardised outcome measures, which hampers the comparability of the studies. Therefore, larger and standardised observational studies applying validated case definitions and outcome measures including quality of life assessment are required to provide solid evidence to answer the research question.
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Affiliation(s)
- Lena S. Abbuehl
- Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Eveline Hofmann
- Department of Infectious Diseases, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Arsany Hakim
- Institute of Diagnostic and Interventional Neuroradiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Anelia Dietmann
- Department of Neurology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
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Divyashree K, Singh H, Suri V, Bhalla A. Empirical intravenous aciclovir therapy in a suspected case of acute encephalitis. Trop Doct 2023; 53:321-324. [PMID: 36694451 DOI: 10.1177/00494755231152654] [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: 01/26/2023]
Abstract
Herpes simplex encephalitis is the most common cause of sporadic viral encephalitis worldwide but presents as a diagnostic challenge at many settings due to its non-specific symptoms, which can be easily mistaken for systemic infection or metabolic encephalopathy. It has diverse range of presentations from fever, altered sensorium, nausea, vomiting, meningismus to seizures, neurological deficits and coma in advanced stages. It is associated with significant morbidity and mortality if treatment is delayed or inadequate. We here discuss a case of Herpes simplex virus (HSV) encephalitis which rapidly progressed to result in irreversible neurological insult due to delayed diagnosis and treatment.
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Affiliation(s)
- Krishna Divyashree
- Department of Internal Medicine, 29751Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Harpreet Singh
- Department of Internal Medicine, 29751Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Vikas Suri
- Department of Internal Medicine, 29751Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Ashish Bhalla
- Department of Internal Medicine, 29751Post Graduate Institute of Medical Education and Research, Chandigarh, India
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7
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Matthews E, Beckham JD, Piquet AL, Tyler KL, Chauhan L, Pastula DM. Herpesvirus-Associated Encephalitis: an Update. CURRENT TROPICAL MEDICINE REPORTS 2022; 9:92-100. [PMID: 36186545 PMCID: PMC9510386 DOI: 10.1007/s40475-022-00255-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/08/2022] [Indexed: 11/03/2022]
Abstract
Purpose of Review Recent Findings Summary
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8
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Berkhout A, Kapoor V, Heney C, Jones CA, Clark JE, Britton PN, Vaska VL, Lai MM, Nourse C. Epidemiology and long-term neurological sequelae of childhood herpes simplex CNS infection. J Paediatr Child Health 2022; 58:1372-1378. [PMID: 35510684 PMCID: PMC9546081 DOI: 10.1111/jpc.15992] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/07/2022] [Accepted: 04/11/2022] [Indexed: 11/26/2022]
Abstract
AIM Herpes simplex CNS infection is a rare but important cause of neurological disability. Long term outcomes after HSV CNS infection in Australia have not yet been fully described. We sought to provide a comprehensive review of HSV CNS infection in children using a retrospective 13-year evaluation of statewide laboratory and clinical records and a parent survey conducted at least one year after the initial infection. METHODS All positive PCR HSV 1 and 2 results from cerebrospinal fluid (CSF) or brain tissue were obtained from Queensland pathology providers for children aged 0-16 years between 1 January 2005 and 31 December 2017. Clinical data were obtained from patient records and longer-term outcomes via parent survey at least 1 year after initial infection. RESULTS Forty-three children were identified over the 13-year period, 17 (39.5%) neonates and 26 (60.4%) non-neonates. The annual incidence for HSV CNS infection in Queensland children aged ≤16 years was 0.3/100 000 (95% confidence intervals (CIs): 0.2-0.4) with neonates at highest risk (incidence 2.5/100 000 live births, 95% CI: 1.5-3.9). HSV 1 was the predominant serotype in both neonates and non-neonates (9/17, 52.9% neonates and 19/26, 73.1% non-neonates). Seven (16.3%) children died, five (5/17, 29.4% neonates), directly attributable to HSV CNS infection (all neonates). Twenty-five (58.1%) had neurological morbidity at discharge (9/17 neonates (52.9%) vs. 16/26 (61.5%) non-neonates) and 20/27 (74.1%) reported long-term neurological morbidity at follow-up (5/9 neonates (55.6%) vs. 15/18 non-neonates (83.3%)). Seven children (two neonates and four non-neonates) with long-term neurological sequelae had no neurological morbidity identified at discharge. CONCLUSION Significant long-term neurologic sequelae were seen in children with HSV CNS infection even in children with no neurological disability identified at discharge from hospital. Careful neurodevelopmental follow-up of all children is recommended.
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Affiliation(s)
- Angela Berkhout
- Faculty of MedicineUniversity of QueenslandBrisbaneQueenslandAustralia,Queensland Children's HospitalBrisbaneQueenslandAustralia
| | - Vishal Kapoor
- Faculty of MedicineUniversity of QueenslandBrisbaneQueenslandAustralia,Queensland Children's HospitalBrisbaneQueenslandAustralia
| | | | - Cheryl A Jones
- Sydney Medical School, Faculty of Medicine and HealthThe University of SydneySydneyNew South WalesAustralia,Sydney Children's Hospital Network (The Children's Hospital Westmead)SydneyNew South WalesAustralia
| | - Julia E Clark
- Faculty of MedicineUniversity of QueenslandBrisbaneQueenslandAustralia,Queensland Children's HospitalBrisbaneQueenslandAustralia
| | - Philip N Britton
- Sydney Medical School, Faculty of Medicine and HealthThe University of SydneySydneyNew South WalesAustralia,Sydney Children's Hospital Network (The Children's Hospital Westmead)SydneyNew South WalesAustralia
| | - Vikram L Vaska
- Queensland Children's HospitalBrisbaneQueenslandAustralia,Mater PathologyBrisbaneQueenslandAustralia
| | - Melissa M Lai
- Faculty of MedicineUniversity of QueenslandBrisbaneQueenslandAustralia,The Royal Brisbane and Women's HospitalBrisbaneQueenslandAustralia
| | - Clare Nourse
- Faculty of MedicineUniversity of QueenslandBrisbaneQueenslandAustralia,Queensland Children's HospitalBrisbaneQueenslandAustralia
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Pizzi MA, Busl KM. Catch Me If You Can-How Herpes Simplex Virus Tries to Evade Diagnosis in Viral Encephalitis. Crit Care Med 2022; 50:1170-1173. [PMID: 35726985 DOI: 10.1097/ccm.0000000000005501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Michael A Pizzi
- Both authors: Departments of Neurology and Neurosurgery, Division of Neurocritical Care, University of Florida College of Medicine, Gainesville, FL
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Omland LH, Bodilsen J, Larsen JH, Jarløv JO, Ziebell M, Ellermann-Eriksen S, Justesen US, Frimodt-Møller N, Obel N. Socioeconomic functioning in patients with brain abscess – a nationwide, population-based cohort study in Denmark. J Infect 2022; 84:621-627. [DOI: 10.1016/j.jinf.2022.02.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 02/08/2022] [Accepted: 02/14/2022] [Indexed: 10/19/2022]
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Jakobsen A, Skov MT, Larsen L, Petersen PT, Brandt C, Wiese L, Hansen BR, Lüttichau HR, Tetens MM, Helweg-Larsen J, Storgaard M, Nielsen H, Bodilsen J. Herpes simplex virus 2 meningitis in adults: A prospective, nationwide, population-based cohort study. Clin Infect Dis 2022; 75:753-760. [PMID: 34979025 DOI: 10.1093/cid/ciab1071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Data on the clinical presentation are scarce and prognostic factors of Herpes simplex virus type 2 (HSV-2) meningitis remain unknown. METHODS Prospective, nationwide, population-based database identifying all adults treated for HSV-2 meningitis at departments of infectious diseases in Denmark from 2015-2020. Unfavorable outcome was defined as Glasgow Outcome Scale (GOS) score of 1-4 and extended GOS score of 1-6. Modified Poisson regression was used to compute relative risks with 95% confidence intervals (RR, 95% CI) for unfavorable outcome. RESULTS HSV-2 meningitis was diagnosed in 205 cases (76% female, median age 35 [IQR 27-49]) yielding an incidence of 0.7/100,000/year. Common symptoms were headache 195/204 (95%), photo/phonophobia 143/188 (76%), and neck stiffness 106/196 (54%). Median time to lumbar puncture was 2.0 hours (IQR 1-4.8) and cerebrospinal fluid (CSF) leukocyte count was 360x10 6/L (IQR 166-670) with a mononuclear predominance of 97% (IQR 91-99). Lumbar puncture was preceded by brain imaging in 61/205 (30%). Acyclovir/valaciclovir was administered in 197/205 (96%) cases for a median of 10 days (IQR 7-14).Unfavorable outcome was observed in 64/205 (31%) at discharge and 19/181 (11%) after six months and was not associated with female sex (RR 1.08, 95% CI 0.65-1.79), age ≥35 years (1.28, 0.83-1.97), immuno-compromise (1.07, 0.57-2.03), or CSF leukocyte count >1,000x10 6/L (0.78, 0.33-1.84). CONCLUSIONS HSV-2 meningitis often presented as meningeal symptoms in younger females. Unfavorable outcome at discharge was common and was not associated with sex, age, immune-compromise, or CSF leukocyte count. Sequelae persisted beyond six months in one tenth of patients.
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Affiliation(s)
- Anna Jakobsen
- Department of Infectious Diseases, Aalborg University Hospital, Aalborg, Denmark
| | - Marie Thaarup Skov
- Department of Infectious Diseases, Aalborg University Hospital, Aalborg, Denmark
| | - Lykke Larsen
- Research Unit for Infectious Diseases, Odense University Hospital, Odense, Denmark; University of Southern Denmark, Odense, Denmark
| | - Pelle Trier Petersen
- Department of Pulmonary and Infectious Diseases, Nordsjællands Hospital, Hillerød, Denmark
| | - Christian Brandt
- Department of Pulmonary and Infectious Diseases, Nordsjællands Hospital, Hillerød, Denmark.,Department of Infectious Diseases, Sjælland University Hospital, Roskilde, Denmark
| | - Lothar Wiese
- Department of Infectious Diseases, Sjælland University Hospital, Roskilde, Denmark
| | | | - Hans Rudolf Lüttichau
- Department of Medicine and Infectious Diseases, Herlev Gentofte Hospital, Herlev Copenhagen, Denmark
| | - Malte Mose Tetens
- Department of Infectious Diseases, Rigshospitalet, Copenhagen, Denmark
| | | | - Merete Storgaard
- Department of Infectious Diseases, Aarhus University Hospital, Skejby, Aarhus N, Denmark
| | - Henrik Nielsen
- Department of Infectious Diseases, Aalborg University Hospital, Aalborg, Denmark.,Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Jacob Bodilsen
- Department of Infectious Diseases, Aalborg University Hospital, Aalborg, Denmark
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Mielcarska MB, Skowrońska K, Wyżewski Z, Toka FN. Disrupting Neurons and Glial Cells Oneness in the Brain-The Possible Causal Role of Herpes Simplex Virus Type 1 (HSV-1) in Alzheimer's Disease. Int J Mol Sci 2021; 23:ijms23010242. [PMID: 35008671 PMCID: PMC8745046 DOI: 10.3390/ijms23010242] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 12/21/2021] [Accepted: 12/22/2021] [Indexed: 12/15/2022] Open
Abstract
Current data strongly suggest herpes simplex virus type 1 (HSV-1) infection in the brain as a contributing factor to Alzheimer's disease (AD). The consequences of HSV-1 brain infection are multilateral, not only are neurons and glial cells damaged, but modifications also occur in their environment, preventing the transmission of signals and fulfillment of homeostatic and immune functions, which can greatly contribute to the development of disease. In this review, we discuss the pathological alterations in the central nervous system (CNS) cells that occur, following HSV-1 infection. We describe the changes in neurons, astrocytes, microglia, and oligodendrocytes related to the production of inflammatory factors, transition of glial cells into a reactive state, oxidative damage, Aβ secretion, tau hyperphosphorylation, apoptosis, and autophagy. Further, HSV-1 infection can affect processes observed during brain aging, and advanced age favors HSV-1 reactivation as well as the entry of the virus into the brain. The host activates pattern recognition receptors (PRRs) for an effective antiviral response during HSV-1 brain infection, which primarily engages type I interferons (IFNs). Future studies regarding the influence of innate immune deficits on AD development, as well as supporting the neuroprotective properties of glial cells, would reveal valuable information on how to harness cytotoxic inflammatory milieu to counter AD initiation and progression.
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Affiliation(s)
- Matylda Barbara Mielcarska
- Department of Preclinical Sciences, Institute of Veterinary Sciences, Warsaw University of Life Sciences–SGGW, Jana Ciszewskiego 8, 02-786 Warsaw, Poland;
- Correspondence: ; Tel.: +48-22-59-36063
| | - Katarzyna Skowrońska
- Department of Neurotoxicology, Mossakowski Medical Research Institute, Polish Academy of Sciences, Adolfa Pawińskiego 5, 02-106 Warsaw, Poland;
| | - Zbigniew Wyżewski
- Institute of Biological Sciences, Cardinal Stefan Wyszyński University in Warsaw, Dewajtis 5, 01-815 Warsaw, Poland;
| | - Felix Ngosa Toka
- Department of Preclinical Sciences, Institute of Veterinary Sciences, Warsaw University of Life Sciences–SGGW, Jana Ciszewskiego 8, 02-786 Warsaw, Poland;
- Department of Biomedical Sciences, Ross University School of Veterinary Medicine, Basseterre 42123, Saint Kitts and Nevis
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Zelano J. Recurrence risk after a first remote symptomatic seizure in adults: Epilepsy or not? Epilepsia Open 2021; 6:634-644. [PMID: 34561959 PMCID: PMC8633470 DOI: 10.1002/epi4.12543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 09/16/2021] [Accepted: 09/21/2021] [Indexed: 11/08/2022] Open
Abstract
The ILAE practical definition of epilepsy has a one seizure possibility to diagnose epilepsy after a first seizure if the recurrence risk is very high. The recurrence risk after a first seizure in brain disorders (first remote seizure) is often high, but varies with etiology, so more specific information is needed for clinical practice. This review describes etiology-specific recurrence risks in adults with a first remote seizure in stroke, traumatic brain injury, infections, dementia, multiple sclerosis, and tumors. Most studies are short, single center, and retrospective. Inclusion criteria, outcome ascertainment, and results vary. Few patient categories are clearly above the epilepsy threshold of recurrence risk, and there are surprisingly little data for important etiologies like brain infections. Beside stroke, severe TBI could have a sufficiently high recurrence risk for early epilepsy diagnosis, but more studies are needed, preferably prospective ones. The literature is uninformative regarding which seizures qualify as remote. The clinical implication of the low level of available evidence is that for other etiologies than stroke, seizure recurrence remains the most appropriate indicator of epilepsy for most patients with a first remote seizure. Nonetheless, there are worrying indications of a diagnostic drift, which puts patients with a preexisting brain disorder at risk of misdiagnosis. Although there are drawbacks to an intermediate term like "possible epilepsy," it could perhaps be useful in cases when the recurrence risk is high, but epilepsy criteria are not definitely met after a first remote seizure.
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Affiliation(s)
- Johan Zelano
- Department of Neurology, Sahlgrenska University Hospital, Gothenburg, Sweden.,Department of Clinical Neuroscience, Institute of Neuroscience and Physiology, Sahlgrenska Academy, Gothenburg University, Gothenburg, Sweden.,Wallenberg Center of Molecular and Translational Medicine, Gothenburg University, Gothenburg, Sweden
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