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Herpes virus-6 encephalitis

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https://www.readbyqxmd.com/read/29902492/analytical-validation-of-viral-cns-flow-chip-kit-for-detection-of-acute-meningitis-and-encephalitis
#1
Mercedes Pérez-Ruiz, Irene Pedrosa-Corral, Sara Sanbonmatsu-Gámez, Cristina Gómez-Camarasa, José María Navarro-Marí
A new molecular assay (Viral CNS Flow Chip kit, Master Diagnóstica, Spain) has been developed for the detection of eight viruses causing acute meningitis and encephalitis, i.e. herpes simplex viruses 1-2, varicella zoster virus, human enterovirus, human parechovirus, Toscana virus, human cytomegalovirus and Epstein Barr virus. The new assay is a multiplex one-step RT-PCR followed by automatic flow-through hybridization, colorimetric detection and image analysis. The limit of detection was 50 copies/reaction, and 10 copies/reaction for human enterovirus and the other seven viruses, respectively...
June 11, 2018: Journal of Virological Methods
https://www.readbyqxmd.com/read/29896664/neurological-disorders-associated-with-human-alphaherpesviruses
#2
Jun-Ichi Kawada
Herpes simplex virus (HSV) encephalitis is the most common cause of sporadic fatal encephalitis worldwide, and central nervous system (CNS) involvement is observed in approximately one-third of neonatal HSV infections . In recent years, single-gene inborn errors of innate immunity have been shown to be associated with susceptibility to HSV encephalitis . Temporal lobe abnormalities revealed by magnetic resonance imaging-the most sensitive imaging method for HSV encephalitis-are considered strong evidence for the disease...
2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29774053/postherpes-simplex-encephalitis-a-case-series-of-viral-triggered-autoimmunity-synaptic-autoantibodies-and-response-to-therapy
#3
Harry Alexopoulos, Sofia Akrivou, Sotiria Mastroyanni, Maria Antonopoulou, Argirios Dinopoulos, Melpo Giorgi, Kostas Konstantinou, Evangelos Kouremenos, Maria Lariou, Dimitrios Naoumis, Efterpi Pavlidou, Evaggelos Pavlou, Konstantinos Voudris, Panayotis Vlachoyiannopoulos, Marinos C Dalakas
Background: Recent evidence suggests that patients with herpes simplex virus (HSV) encephalitis may relapse because of autoimmunity against the N-methyl-D-aspartate receptor (NMDAR). We present a case series of post-HSV relapsing encephalopathy associated with antibodies to central nervous system (CNS) synaptic antigens. Patient/Methods: Sera and cerebrospinal fluid (CSF) from five patients with HSV encephalitis who relapsed after antiviral therapy were tested for anti-NMDAR, gamma-aminobutyric acid b receptor (GABAbR), α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR), Leucine-rich, glioma inactivated 1 (LGI1), anti -contactin-associated protein-like 2 (CASPR2) and dipeptidyl-peptidase-like protein-6 (DDPX) antibodies using cell-based assays...
2018: Therapeutic Advances in Neurological Disorders
https://www.readbyqxmd.com/read/29622669/secular-trends-in-infection-related-mortality-after-kidney-transplantation
#4
Susanna Kinnunen, Pauli Karhapää, Auni Juutilainen, Patrik Finne, Ilkka Helanterä
BACKGROUND AND OBJECTIVES: Infections are the most common noncardiovascular causes of death after kidney transplantation. We analyzed the current infection-related mortality among kidney transplant recipients in a nationwide cohort in Finland. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS: Altogether, 3249 adult recipients of a first kidney transplant from 1990 to 2012 were included. Infectious causes of death were analyzed, and the mortality rates for infections were compared between two eras (1990-1999 and 2000-2012)...
May 7, 2018: Clinical Journal of the American Society of Nephrology: CJASN
https://www.readbyqxmd.com/read/29599011/anti-n-methyl-d-aspartate-receptor-encephalitis-in-children-incidence-and-experience-in-hong-kong
#5
Alvin Chi-Chung Ho, Sophelia Hoi-Shan Chan, Eric Chan, Sheila Suet-Na Wong, Sharon Tsui-Hang Fung, Sharon Wan-Wah Cherk, Eva Lai-Wah Fung, Kam-Hung Ma, Kwing-Wan Tsui, Eric Kin-Cheong Yau, Virginia Chun-Nei Wong
AIM: The study aims to analyze the incidence, clinical features, investigation findings and treatment outcomes of anti-N-methyl-d-aspartate receptor encephalitis in children from Hong Kong. METHOD: A retrospective study was carried out on paediatric patients diagnosed with anti-NMDAR encephalitis in Hong Kong from January 2009 to December 2015. RESULTS: Fifteen patients (67% female, 93% Chinese) were identified over seven years and the estimated incidence in Hong Kong was 2...
June 2018: Brain & Development
https://www.readbyqxmd.com/read/29590177/emergence-of-orientia-tsutsugamushi-as-an-important-cause-of-acute-encephalitis-syndrome-in-india
#6
Parul Jain, Shantanu Prakash, Piyush K Tripathi, Archana Chauhan, Shikha Gupta, Umesh Sharma, Anil K Jaiswal, Devraj Sharma, Amita Jain
BACKGROUND: Acute Encephalitis Syndrome (AES) is a major seasonal public health problem in Bihar, India. Despite efforts of the Bihar health department and the Government of India, burden and mortality of AES cases have not decreased, and definitive etiologies for the illness have yet to be identified. OBJECTIVES: The present study was undertaken to study the specific etiology of AES in Bihar. METHODS: Cerebrospinal fluid and/or serum samples from AES patients were collected and tested for various pathogens, including viruses and bacteria by ELISA and/or Real Time PCR...
March 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29582466/unique-cell-tropism-of-hhv-6b-in-an-infantile-autopsy-case-of-primary-hhv-6b-encephalitis
#7
Hiroaki Miyahara, Kouki Miyakawa, Haruto Nishida, Shinji Yano, Tomoko Sonoda, So-Ichi Suenobu, Tatsuro Izumi, Tsutomu Daa, Kenji Ihara
Human herpes virus 6 (HHV-6) is known to cause primary encephalitis in the frontal lobes/cerebral hemisphere or reactivated encephalitis in the hippocampus, but the pathogenesis remains unclear. HHV-6B has also been detected in hippocampal samples in patients with mesial temporal lobe epilepsy. A 1 year and 3 months old female, who had been clinically diagnosed with exanthema subitum and febrile convulsion, was found dead on the third day after onset. Macroscopic findings showed massive brain edema. Microscopic examination revealed gemistocytic astrocytes and ballooned oligodendrocytes in the frontal white matter, along with neuronal cell death with microglial infiltration in the frontal cortex...
March 26, 2018: Neuropathology: Official Journal of the Japanese Society of Neuropathology
https://www.readbyqxmd.com/read/29531617/epidemiological-profile-of-acute-viral-encephalitis-in-a-sample-of-egyptian-children
#8
Bassant Meligy, Dalia Kadry, Iman H Draz, Huda Marzouk, Nevine R El Baroudy, Amira Sayed El Rifay
INTRODUCTION: Acute encephalitis syndrome (AES) is a considerable public health problem. AIM: This study was designed to describe the aetiology, demographic features, clinical picture, short-term outcome and risk factors of mortality of children with viral encephalitis in Egyptian children. METHODS: PCR detection of viruses in the CSF of pediatric patients admitted to the pediatric unit or ICU Cairo University Pediatric hospital presenting with encephalitis syndrome...
February 15, 2018: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/29478004/herpes-simplex-virus-hsv-encephalitis-in-a-young-man-an-unusual-course
#9
Amos Lal, Megha C Dhamne, Andrew C Hui, Aftab Ahmad
We present a case of cerebral venous sinus thrombosis (CVST) as a rare complication of herpes simplex virus (HSV) encephalitis. A young man with no pertinent medical history was diagnosed with HSV encephalitis. After initial treatment, he showed improvement in symptomatology until day 6 when he acutely developed new neurological deficits. An urgent MRI brain showed changes in left temporal lobe consistent with HSV encephalitis and lack of flow void in superior sagittal sinus. Subsequent magnetic resonance venography confirmed the diagnosis of superior sagittal sinus thrombosis along with thrombosis of bilateral frontoparietal cortical draining veins...
February 24, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29409994/infectious-meningitis-and-encephalitis-in-adults-in-denmark-a-prospective-nationwide-observational-cohort-study-dasgib
#10
J Bodilsen, Merete Storgaard, L Larsen, L Wiese, J Helweg-Larsen, A-M Lebech, C Brandt, C Østergaard, H Nielsen
OBJECTIVES: To monitor epidemiological trends of infectious meningitis (bacterial and viral) and encephalitis in Denmark. METHODS: Nationwide prospective observational study of all cases of proven community-acquired infectious meningitis and encephalitis in adults treated in all infectious diseases departments in Denmark from 1 January 2015 to 30 June 2016. We included data on symptoms, aetiology, treatment and outcome assessed by the Glasgow Outcome Scale (GOS) 30 days after discharge...
February 23, 2018: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/29405145/aetiological-study-of-viruses-causing-acute-encephalitis-syndrome-in-north-west-india
#11
Jitendra Kumar Tiwari, Bharti Malhotra, Aradhana Chauhan, Hemant Malhotra, Pratibha Sharma, Farah Deeba, Khushbu Trivedi, Anjenya M Swamy
CONTEXT: Acute encephalitis syndrome (AES) is a serious public health problem, caused mainly by viruses. However, the profile of viruses causing AES in Rajasthan is not well characterised. AIMS: The present study was undertaken to identify the viruses causing AES and develop diagnostic algorithm so as to help in improved diagnosis, treatment, prevention and control. SETTINGS AND DESIGN: The present study is a hospital-based descriptive, observational study...
October 2017: Indian Journal of Medical Microbiology
https://www.readbyqxmd.com/read/29401338/a-tertiary-care-center-s-experience-with-novel-molecular-meningitis-encephalitis-diagnostics-and-implementation-with-antimicrobial-stewardship
#12
David Chang, Jason F Okulicz, Lindsey E Nielsen, Brian K White
Background: Novel molecular techniques, such as the Biofire FilmArray Meningitis/Encephalitis (ME) panel, are increasingly used to improve pathogen detection and time to detection (TtD). The Brooke Army Medical Center antibiotic stewardship program evaluated the impact of the ME panel on empiric antimicrobial usage. Methods: Negative ME panels were analyzed for days of therapy (DOT). The ME panel became available at Brooke Army Medical Center on January 1, 2016 and a retrospective chart review was performed on all hospitalized patients tested by ME panel through April 30, 2016...
January 1, 2018: Military Medicine
https://www.readbyqxmd.com/read/29277332/cytokine-chemokine-elevation-during-the-transition-phase-from-hsv-encephalitis-to-autoimmune-anti-nmda-receptor-encephalitis
#13
Takanori Omae, Yoshiaki Saito, Hirokazu Tsuchie, Koyo Ohno, Yoshihiro Maegaki, Hiroshi Sakuma
A 3-year-old girl suffered from anti-N-methyl-d-aspartate (anti-NMDA) receptor encephalitis after resolution of herpes simplex virus encephalitis (HSE). Methylprednisolone pulse and immunoglobulin therapies showed little effect, but the patient completely recovered after six courses of monthly cyclophosphamide pulse therapy and successive maintenance on mycophenolate mofetil for one year. Anti-NMDA receptor antibody in the cerebrospinal fluid (CSF) was minimally detected during the prodromal febrile period and then was seen to be markedly elevated at the onset of second encephalopathy phase...
April 2018: Brain & Development
https://www.readbyqxmd.com/read/29181879/high-human-herpesvirus-6-viral-load-in-pediatric-allogeneic-hematopoietic-stem-cell-transplant-patients-is-associated-with-detection-in-end-organs-and-high-mortality
#14
Lena E Winestone, Rajesh Punn, John S Tamaresis, Julia Buckingham, Benjamin A Pinsky, Jesse J Waggoner, Sandhya Kharbanda
Human Herpes Virus 6 (HHV-6) reactivation occurs in approximately half of patients following allogeneic hematopoietic stem cell transplant (HSCT). While encephalitis and delayed engraftment are well-documented complications of HHV-6 following HSCT, the extent to which HHV-6 viremia causes disease in children is controversial. We performed a retrospective review of HHV-6 reactivation and possible manifestations in pediatric allogeneic HSCT patients at a single institution. Of 89 children and young adults who underwent allogeneic HSCT over a three-and-a-half-year period, 34 patients reactivated HHV-6 early post-transplant...
March 2018: Pediatric Transplantation
https://www.readbyqxmd.com/read/29076102/epidemiological-profile-of-acute-viral-encephalitis
#15
Rajesh Kumar, Pankaj Kumar, Manoj Kumar Singh, Dipti Agarwal, Bendangienla Jamir, Shashi Khare, Samrendra Narayan
OBJECTIVE: To study the etiology and clinico-epidemiological profile of acute viral encephalitis in children with acute encephalitis syndrome (AES). METHODS: An observational study including 100 patients fulfilling the criteria for AES was conducted in children of age group 1 mo - 16 y. Viral isolation was done on RD cells, HEp-2 cells and Vero cells from the cerebrospinal fluid samples of suspected viral encephalitis (VE) cases. An enzyme immunoassay for IgM antibodies was performed for measles, mumps, Varicella zoster virus (VZV), Herpes simplex virus 1 (HSV1) and Japanese encephalitis virus (JEV)...
May 2018: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/28929964/-investigation-of-bacterial-and-viral-etiology-in-community-acquired-central-nervous-system-infections-with-molecular-methods
#16
MULTICENTER STUDY
Hasip Kahraman, Alper Tünger, Şebnem Şenol, Hörü Gazi, Meltem Avcı, Bahar Örmen, Nesrin Türker, Sabri Atalay, Şükran Köse, Sercan Ulusoy, Meltem Işıkgöz Taşbakan, Oğuz Reşat Sipahi, Tansu Yamazhan, Zeynep Gülay, Sema Alp Çavuş, Hüsnü Pullukçu
In this multicenter prospective cohort study, it was aimed to evaluate the bacterial and viral etiology in community-acquired central nervous system infections by standart bacteriological culture and multiplex polymerase chain reaction (PCR) methods. Patients hospitalized with central nervous system infections between April 2012 and February 2014 were enrolled in the study. Demographic and clinical information of the patients were collected prospectively. Cerebrospinal fluid (CSF) samples of the patients were examined by standart bacteriological culture methods, bacterial multiplex PCR (Seeplex meningitis-B ACE Detection (Streptococcus pneumoniae, Neisseria meningitidis, Haemophilus influenzae, Listeria monocytogenes, Group B streptococci) and viral multiplex PCR (Seeplex meningitis-V1 ACE Detection kits herpes simplex virus-1 (HSV1), herpes simplex virus-2 (HSV2), varicella zoster virus (VZV), cytomegalovirus (CMV), Epstein Barr virus (EBV) and human herpes virus 6 (HHV6)) (Seeplex meningitis-V2 ACE Detection kit (enteroviruses))...
July 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28890393/antiviral-activity-of-arbidol-hydrochloride-against-herpes-simplex-virus-i-in-vitro-and-in-vivo
#17
Min-Ke Li, Yuan-Yuan Liu, Fei Wei, Meng-Xin Shen, Yan Zhong, Shan Li, Liang-Jun Chen, Nian Ma, Bing-Yu Liu, Yi-Dong Mao, Ning Li, Wei Hou, Hai-Rong Xiong, Zhan-Qiu Yang
Herpes simplex virus type 1 (HSV-1) causes significant human diseases ranging from skin lesions to encephalitis, especially in neonates and immunocompromised hosts. The discovery of novel anti-HSV-1 drugs with low toxicity is required for public health. Arbidol hydrochloride (ARB) is an indole derivative molecule with broad-spectrum antiviral activity. In this study, the antiviral effects of ARB against HSV-1 infection were evaluated in vitro and in vivo. The results showed that ARB presents significant inhibitory effect on HSV-1 plaque formation and generation of progeny virus, with EC50 values (50% effective concentration) of 5...
January 2018: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28838686/use-of-high-b-value-diffusion-weighted-magnetic-resonance-imaging-in-acute-encephalopathy-encephalitis-during-childhood
#18
Yoshiko Tsubouchi, Shinji Itamura, Yoshiaki Saito, Eijiro Yamashita, Yuki Shinohara, Tetsuya Okazaki, Koyo Ohno, Yoko Nishimura, Masayoshi Oguri, Yoshihiro Maegaki
AIM: To determine the use of high b value diffusion-weighted imaging (DWI) in the diagnosis and assessment of acute febrile encephalopathy/encephalitis in childhood. SUBJECTS AND METHODS: We enrolled 22 children, for whom we examined DWI with b=1000s/mm2 , DWI with b=3000s/mm2 , and apparent diffusion coefficient (ADC) map with b=1000 during the acute phase of febrile encephalopathy/encephalitis. Clinical diagnoses included acute encephalopathy with biphasic seizures and late reduced diffusion (AESD; n=6), clinically mild encephalopathy/encephalitis with a reversible splenial lesion (MERS; n=6), and herpes simplex virus encephalitis (HSE; n=3), unclassified acute encephalopathy/acute encephalitis (n=2); acute encephalitis with refractory, repetitive partial seizures (AERRPS; n=1); other encephalopathy (n=1); infarction (n=1); head injury (n=1); or mitochondrial myopathy, encephalopathy, lactic acidosis, and stroke-like episodes (n=1)...
February 2018: Brain & Development
https://www.readbyqxmd.com/read/28801087/cause-of-acute-encephalitis-encephalopathy-in-japanese-children-diagnosed-by-a-rapid-and-comprehensive-virological-detection-system-and-differences-in-their-clinical-presentations
#19
Kei Takasawa, Ryuichi Nakagawa, Shigeru Takishima, Kengo Moriyama, Ken Watanabe, Koji Kiyohara, Takeshi Hasegawa, Masahiro Shimohira, Kenichi Kashimada, Norio Shimizu, Tomohiro Morio
BACKGROUND: Acute encephalitis/encephalopathy (AE/E) is a rare and severe complication of common childhood infections; however, a treatment strategy based on clinical and pathological evidence has not been established. METHODS: The clinical data and aetiological results using a rapid and comprehensive virological detection system of 62 Japanese children diagnosed with AE/E from 2010 to 2014 were collected. We assessed clinical differences between causes and effectiveness of our multiplex PCR system to establish a pathogen-based treatment strategy for AE/E...
February 2018: Brain & Development
https://www.readbyqxmd.com/read/28705180/etiology-and-prognosis-of-acute-viral-encephalitis-and-meningitis-in-chinese-children-a-multicentre-prospective-study
#20
MULTICENTER STUDY
Junhong Ai, Zhengde Xie, Gang Liu, Zongbo Chen, Yong Yang, Yuning Li, Jing Chen, Guo Zheng, Kunling Shen
BACKGROUND: In China, there were few studies about the pathogens of acute viral encephalitis and meningitis in children in recent years. The aims of this study were to characterize the etiology and prognosis of acute viral encephalitis and meningitis in Chinese children. METHODS: This was a multicentre prospective study. Two hundred and sixty one viral encephalitis patients and 285 viral meningitis patients were enrolled. The mean age of viral encephalitis and meningitis were 5...
July 14, 2017: BMC Infectious Diseases
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