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Herpes encephalitis

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https://www.readbyqxmd.com/read/29217828/frequently-used-bioinformatics-tools-overestimate-the-damaging-effect-of-allelic-variants
#1
Line Lykke Andersen, Ewa Terczyńska-Dyla, Nanna Mørk, Carsten Scavenius, Jan J Enghild, Klara Höning, Veit Hornung, Mette Christiansen, Trine H Mogensen, Rune Hartmann
We selected two sets of naturally occurring human missense allelic variants within innate immune genes. The first set represented eleven non-synonymous variants in six different genes involved in interferon (IFN) induction, present in a cohort of patients suffering from herpes simplex encephalitis (HSE) and the second set represented sixteen allelic variants of the IFNLR1 gene. We recreated the variants in vitro and tested their effect on protein function in a HEK293T cell based assay. We then used an array of 14 available bioinformatics tools to predict the effect of these variants upon protein function...
December 4, 2017: Genes and Immunity
https://www.readbyqxmd.com/read/29183618/encephalitis-associated-with-antibodies-against-the-nmda-receptor
#2
REVIEW
Mar Guasp, Josep Dalmau
The encephalitis associated with antibodies against the N-methyl-D-aspartate receptor (NMDAR) is characterized by the presence of antibodies against the GluN1 subunit of this receptor, resulting in symptoms that are similar to those observed in models of genetic or pharmacologic reduction of NMDARs. Patients are usually young adults, predominantly women, and children who develop, in a sequential manner, rapidly progressive symptoms including psychosis, abnormal movements, autonomic dysfunction, and coma. Epileptic seizures are variable and can occur throughout the course of the disease...
November 25, 2017: Medicina Clínica
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
#3
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...
November 27, 2017: Pediatric Transplantation
https://www.readbyqxmd.com/read/29174006/premature-termination-of-treatment-in-neonatal-herpes-simplex-virus-hsv-encephalitis-a-case-of-false-negative-initial-hsv-polymerase-chain-reaction-and-corpus-callosum-diffusion-restriction
#4
Kabelo Thusang, Kallol K Set, Huiyuan Jiang
No abstract text is available yet for this article.
September 14, 2017: Pediatric Neurology
https://www.readbyqxmd.com/read/29163407/a-therapeutic-antiviral-antibody-inhibits-the-anterograde-directed-neuron-to-cell-spread-of-herpes-simplex-virus-and-protects-against-ocular-disease
#5
Dirk Bauer, Mira Alt, Miriam Dirks, Anna Buch, Christiane S Heilingloh, Ulf Dittmer, Bernd Giebel, André Görgens, Vivien Palapys, Maren Kasper, Anna M Eis-Hübinger, Beate Sodeik, Arnd Heiligenhaus, Michael Roggendorf, Adalbert Krawczyk
Herpes simplex virus (HSV) is a leading cause of blindness and viral encephalitis in the developed world. Upon reactivation from sensory neurons, HSV returns via axonal transport to peripheral tissues where it causes, e.g., severe, potentially blinding ocular diseases. In the present study we investigated whether the HSV-1/2 glycoprotein B-specific antibody mAb 2c or its humanized counterpart mAb hu2c can protect from ocular disease in a mouse model of HSV-1-induced acute retinal necrosis (ARN). In this model the viral spread from the initially infected to the contralateral eye resembles the routes taken in humans upon HSV reactivation...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29162867/broad-spectrum-antiviral-agents-secreted-phospholipase-a2-targets-viral-envelope-lipid-bilayers-derived-from-the-endoplasmic-reticulum-membrane
#6
Ming Chen, Chie Aoki-Utsubo, Masanori Kameoka, Lin Deng, Yutaka Terada, Wataru Kamitani, Kei Sato, Yoshio Koyanagi, Makoto Hijikata, Keiko Shindo, Takeshi Noda, Michinori Kohara, Hak Hotta
Hepatitis C virus (HCV), dengue virus (DENV) and Japanese encephalitis virus (JEV) belong to the family Flaviviridae. Their viral particles have the envelope composed of viral proteins and a lipid bilayer acquired from budding through the endoplasmic reticulum (ER). The phospholipid content of the ER membrane differs from that of the plasma membrane (PM). The phospholipase A2 (PLA2) superfamily consists of a large number of members that specifically catalyse the hydrolysis of phospholipids at a particular position...
November 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29146286/-genital-herpes-and-pregnancy-epidemiology-clinical-manifestations-prevention-and-screening-guidelines-for-clinical-practice-from-the-french-college-of-gynecologists-and-obstetrician-cngof
#7
O Picone
OBJECTIVES: To analyze the consequences of genital herpes infections in pregnant women. METHODS: The PubMed database and the recommendations from the French and foreign obstetrical societies or colleges have been consulted. RESULTS: The symptomatology of herpes genital rash is often atypical (NP2) and not different during pregnancy (Professional consensus). It is most often due to HSV2 (NP2). Seventy percent of pregnant patients have a history of infection with Herpes simplex virus, without reference to genital or labial localization, and this is in most cases type 1 (NP2)...
November 13, 2017: Gynecologie, Obstetrique, Fertilite & Senologie
https://www.readbyqxmd.com/read/29144221/a-case-of-bell-s-palsy-complicated-by-subsequent-herpes-simplex-virus-encephalitis
#8
Margaret Moores, Caroline Nott
No abstract text is available yet for this article.
November 16, 2017: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/29141790/cerebral-toxoplasmosis-in-an-ms-patient-receiving-fingolimod
#9
Alejandro Enriquez-Marulanda, Jaime Valderrama-Chaparro, Laura Parrado, Juan Diego Vélez, Ana Maria Granados, Jorge Luis Orozco, Jairo Quiñones
Multiple Sclerosis (MS) is an autoimmune disease in which lymphocytes target putative myelin antigens in the CNS, causing inflammation and neurodegeneration. Fingolimod (FTY720) is an immunosuppressive drug used as a second line therapy for relapsing forms of MS due to its safety profile and good response to treatment. Despite its safety, there are still concerns about the possibility of Fingolimod being linked to the development of opportunistic infections like disseminated varicella zoster infections and herpes simplex encephalitis...
November 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/29141320/-diagnosis-of-one-child-herpes-simplex-virus-type-1-encephalitis-with-next-generation-sequencing
#10
J Z Zhang, Q Chen, P Zheng
No abstract text is available yet for this article.
November 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/29113740/efficacy-of-pritelivir-and-acyclovir-in-the-treatment-of-herpes-simplex-virus-infections-in-a-mouse-model-of-herpes-simplex-encephalitis
#11
Debra C Quenelle, Alexander Birkmann, Thomas Goldner, Tamara Pfaff, Holger Zimmermann, Susanne Bonsmann, Deborah J Collins, Terri L Rice, Mark N Prichard
Pritelivir, a helicase-primase inhibitor, has excellent in vitro and in vivo activity against human herpes simplex virus (HSV). Mice lethally infected with HSV type 1 or 2, including acyclovir-resistant strains, were treated 72 h after infection for 7 days with pritelivir or acyclovir. Both drugs were administered orally twice daily either alone or in combination. Dosages of pritelivir from 0.3 to 30 mg/kg reduced mortality (P < 0.001) against HSV-1, E-377. With an acyclovir resistant HSV-1, 11360, pritelivir at 1 and 3 mg/kg increased survival (P < 0...
November 4, 2017: Antiviral Research
https://www.readbyqxmd.com/read/29077387/anti-nmda-receptor-encephalitis-from-bench-to-clinic
#12
Arun Venkatesan, Krishma Adatia
NMDAR encephalitis is a common cause of autoimmune encephalitis, predominantly affecting young adults. Current data supports the idea that autoantibodies targeting NMDARs are responsible for disease pathogenesis. While these autoantibodies occur in the setting of underlying malignancy in approximately half of all patients, initiating factors for the autoimmune response in the remainder of patients are unclear. While there is increasing evidence supporting viral triggers such as herpes simplex encephalitis, this association and the mechanism of action have not yet been fully described...
November 7, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/29076102/epidemiological-profile-of-acute-viral-encephalitis
#13
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)...
October 27, 2017: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/29073246/increased-serum-anti-n-methyl-d-aspartate-receptor-antibody-immunofluorescence-in-psychiatric-patients-with-past-catatonia
#14
Chin-Chuen Lin, Yi-Yung Hung, Meng-Chang Tsai, Tiao-Lai Huang
OBJECTIVE: Anti-N-methyl-D-aspartate receptor (NMDAR) antibody was thought to be the cause of anti-NMDAR encephalitis, with manifestations similar to catatonia and schizophrenia. Anti-NMDAR antibody in neuropsychiatric patients who had catatonia before were investigated in a follow-up evaluation. The intensity of antibody immunofluorescence was quantified and compared with healthy controls. METHOD: Nineteen patients (eight males and eleven females) agreed to be followed-up...
2017: PloS One
https://www.readbyqxmd.com/read/29057131/intracranial-hemorrhage-complicating-herpes-simplex-encephalitis-on-antiviral-therapy-a-case-report-and-review-of-the-literature
#15
Ghada ElShimy, Christina Mariyam Joy, Fred Berlin, Waleed Lashin
Herpes simplex virus (HSV) encephalitis is the most common cause of nonendemic sporadic encephalitis in the USA. Decreased mortality with early treatment with acyclovir has been documented. Although common complications include cortical petechial hemorrhages, frank intracerebral hematomas are considered very rare. Only few cases have been reported in the literature. We report a case of HSV encephalitis complicated by intracerebral hemorrhage 12 days after initiation of acyclovir therapy.
2017: Case Reports in Infectious Diseases
https://www.readbyqxmd.com/read/29033632/review-of-viral-encephalitis-cases-seen-at-a-tertiary-care-center-in-turkey-focus-on-herpes-simplex-type-1
#16
Beyza Çiftçi Kavaklioğlu, Eda Çoban, Aysu Şen, Elif Söylemezoğlu, Mehmet Ali Aldan, Dilek Atakli, Aysun Soysal
INTRODUCTION: The objective of this study was to determine the incidence of herpes simplex encephalitis (HSE), known as the most common, potentially mortal, and treatable cause of sporadic encephalitis, in a sample Turkish population. METHODS: The demographic, clinical, laboratory, imaging, electrophysiology, and polymerase chain reaction (PCR) DNA results of patients examined with a pre-diagnosis of encephalitis were retrospectively examined. RESULTS: A total of 68 patients were included in the study...
September 2017: Noro Psikiyatri Arsivi
https://www.readbyqxmd.com/read/28979799/network-analysis-of-the-hominin-origin-of-herpes-simplex-virus-2-from-fossil-data
#17
Simon J Underdown, Krishna Kumar, Charlotte Houldcroft
Herpes simplex virus 2 (HSV2) is a human herpesvirus found worldwide that causes genital lesions and more rarely causes encephalitis. This pathogen is most common in Africa, and particularly in central and east Africa, an area of particular significance for the evolution of modern humans. Unlike HSV1, HSV2 has not simply co-speciated with humans from their last common ancestor with primates. HSV2 jumped the species barrier between 1.4 and 3 MYA, most likely through intermediate but unknown hominin species. In this article, we use probability-based network analysis to determine the most probable transmission path between intermediate hosts of HSV2, from the ancestors of chimpanzees to the ancestors of modern humans, using paleo-environmental data on the distribution of African tropical rainforest over the last 3 million years and data on the age and distribution of fossil species of hominin present in Africa between 1...
July 2017: Virus Evolution
https://www.readbyqxmd.com/read/28976562/seroprevalence-of-lymphocytic-choriomeningitis-virus-and-ljungan-virus-in-finnish-patients-with-suspected-neurological-infections
#18
Cristina Fevola, Suvi Kuivanen, Teemu Smura, Antti Vaheri, Hannimari Kallio-Kokko, Heidi C Hauffe, Olli Vapalahti, Anne J Jääskeläinen
BACKGROUND: Directly-transmitted rodent-borne zoonotic viruses, such as lymphocytic choriomeningitis virus (LCMV) can cause nervous system infections. Rodent-borne Ljungan virus (LV) is considered potentially zoonotic possibly causing neurological symptoms. Our objective was to understand the role of these two viruses compared to other pathogens in causing neurological infections in Finnish patients. METHODS: Routine screening data were available for 400 patients aged 5-50 years, collected from December 2013-December 2014 with suspected neurological infection...
October 4, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28966468/fetal-ventriculomegaly-and-herpes-encephalitis-following-primary-maternal-herpes-simplex-infection
#19
Jenna K Sloan, Chase R Cawyer, Nathan S Drever
Uteroplacental transmission of a primary herpes simplex virus (HSV) infection in pregnancy has been reported; however, HSV ventriculomegaly of the neonate has not been well documented in utero. We present a case of a 19-year-old woman who developed a primary HSV outbreak at 17 weeks of gestation and was treated with acyclovir. A congenital malformation scan at 18 weeks of gestation demonstrated no fetal abnormalities; however, an ultrasound at 33 weeks showed a new finding of ventriculomegaly. Additionally, hydrocephalus was confirmed with magnetic resonance imaging...
October 2017: Proceedings of the Baylor University Medical Center
https://www.readbyqxmd.com/read/28962808/herpes-virus-encephalitis-in-adults-current-knowledge-and-old-myths
#20
REVIEW
Alejandro A Rabinstein
Herpes simplex virus (HSV) encephalitis is uncommon in clinical practice, but is frequently suspected in patients with acute alterations of consciousness. Symptoms and physical signs are nonspecific, and diagnostic confirmation typically hinges on demonstration of viral DNA in cerebrospinal fluid. Brain MRI is helpful in diagnosis and provides prognostic information. Early initiation of intravenous acyclovir is essential to optimize the patient's chances of favorable recovery. HSV encephalitis can trigger an autoimmune reaction with the possible appearance of antibodies to neuronal surface antigens...
November 2017: Neurologic Clinics
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