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https://www.readbyqxmd.com/read/28107386/regulation-of-pi-2b-pilus-expression-in-hypervirulent-streptococcus-agalactiae-st-17-bm110
#1
Bruno Périchon, Noémi Szili, Laurence du Merle, Isabelle Rosinski-Chupin, Myriam Gominet, Samuel Bellais, Claire Poyart, Patrick Trieu-Cuot, Shaynoor Dramsi
The widely spread Streptococcus agalactiae (also known as Group B Streptococcus, GBS) "hypervirulent" ST17 clone is strongly associated with neonatal meningitis. The PI-2b locus is mainly found in ST17 strains but is also present in a few non ST17 human isolates such as the ST-7 prototype strain A909. Here, we analysed the expression of the PI-2b pilus in the ST17 strain BM110 as compared to the non ST17 A909. Comparative genome analyses revealed the presence of a 43-base pair (bp) hairpin-like structure in the upstream region of PI-2b operon in all 26 ST17 genomes, which was absent in the 8 non-ST17 strains carrying the PI-2b locus...
2017: PloS One
https://www.readbyqxmd.com/read/28106800/frequency-and-pathological-phenotype-of-bovine-astrovirus-ch13-neuros1-infection-in-neurologically-diseased-cattle-towards-assessment-of-causality
#2
Senija Selimovic-Hamza, Céline L Boujon, Monika Hilbe, Anna Oevermann, Torsten Seuberlich
Next-generation sequencing (NGS) has opened up the possibility of detecting new viruses in unresolved diseases. Recently, astrovirus brain infections have been identified in neurologically diseased humans and animals by NGS, among them bovine astrovirus (BoAstV) CH13/NeuroS1, which has been found in brain tissues of cattle with non-suppurative encephalitis. Only a few studies are available on neurotropic astroviruses and a causal relationship between BoAstV CH13/NeuroS1 infections and neurological disease has been postulated, but remains unproven...
January 18, 2017: Viruses
https://www.readbyqxmd.com/read/28106787/anti-nmda-receptor-encephalitis-and-vaccination
#3
Hsiuying Wang
Anti-N-methyl-d-aspartate (Anti-NMDA) receptor encephalitis is an acute autoimmune neurological disorder. The cause of this disease is often unknown, and previous studies revealed that it might be caused by a virus, vaccine or tumor. It occurs more often in females than in males. Several cases were reported to be related to vaccination such as the H1N1 vaccine and tetanus/diphtheria/pertussis and polio vaccines. In this study, we reported an anti-NMDA receptor encephalitis case that may be caused by Japanese encephalitis vaccination...
January 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28105556/chikungunya-infection-presenting-as-mild-encephalitis-with-a-reversible-lesion-in-the-splenium-a-case-report
#4
Kadam Nagpal, Puneet Agarwal, Amit Kumar, Rajashekhar Reddi
Chikungunya fever is an Aedes mosquito-transmitted infection caused by chikungunya virus, an RNA virus in the family Togaviridae. The disease is characteristically manifested as fever, arthralgia, and/or rash. Various neurological manifestations like meningoencephalitis, myelitis, and myeloneuropathy have been mentioned in various reports. We present a rare case of chikungunya fever presenting with mild encephalitis with a reversible lesion of the splenium (MERS), which showed complete clinical and radiological recovery...
January 19, 2017: Journal of Neurovirology
https://www.readbyqxmd.com/read/28105459/mog-antibody-positive-benign-unilateral-cerebral-cortical-encephalitis-with-epilepsy
#5
Ryo Ogawa, Ichiro Nakashima, Toshiyuki Takahashi, Kimihiko Kaneko, Tetsuya Akaishi, Yoshiki Takai, Douglas Kazutoshi Sato, Shuhei Nishiyama, Tatsuro Misu, Hiroshi Kuroda, Masashi Aoki, Kazuo Fujihara
OBJECTIVE: To describe the features of adult patients with benign, unilateral cerebral cortical encephalitis positive for the myelin oligodendrocyte glycoprotein (MOG) antibody. METHODS: In this retrospective, cross-sectional study, after we encountered an index case of MOG antibody-positive unilateral cortical encephalitis with epileptic seizure, we tested for MOG antibody using our in-house, cell-based assay in a cohort of 24 consecutive adult patients with steroid-responsive encephalitis of unknown etiology seen at Tohoku University Hospital (2008-2014)...
March 2017: Neurology® Neuroimmunology & Neuroinflammation
https://www.readbyqxmd.com/read/28105214/detection-value-of-tumor-cells-in-cerebrospinal-fluid-in-the-diagnosis-of-meningeal-metastasis-from-lung-cancer-by-immuno-fish-technology
#6
Yuan Lv, Ning Mu, Chunhua Ma, Rong Jiang, Qiaoli Wu, Jinduo Li, Bin Wang, Liwei Sun
To investigate the detection value of tumor cells in cerebrospinal fluid (CSF) in the adjuvant diagnosis of meningeal metastasis from lung cancer by immunofluorescence in situ hybridization (immuno-FISH) technology. The circulating tumor cells (CTCs) in the CSF of 16 patients with meningeal metastasis from lung cancer and 8 with non-tumor diseases in the brain were detected using immuno-FISH technology. The diagnosis of meningeal metastasis from lung cancer was based on neurological symptoms, enhanced magnetic resonance imaging (MRI) scans and CSF cytological examination...
December 2016: Oncology Letters
https://www.readbyqxmd.com/read/28105125/staining-with-two-observational-methods-for-the-diagnosis-of-tuberculous-meningitis
#7
Yueli Zou, Hui Bu, Li Guo, Yajuan Liu, Junying He, Xuedan Feng
Ziehl-Neelsen (Z-N) staining of cerebrospinal fluid (CSF) for acid-fast bacilli (AFB) is the cornerstone of the laboratory diagnosis of tuberculous meningitis (TBM). However, the sensitivity of conventional Z-N staining for the detection of AFB in CSF specimens is suboptimal. The present study aimed to compare the practicality of modified Z-N staining with light microscopy and fluorescence microscopy in the same smear without auramine O. A total of 155 patients with 223 CSF specimens were enrolled and grouped according to the uniform case definition...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28104663/first-complete-genome-sequence-of-genotype-iii-japanese-encephalitis-virus-isolated-from-a-stillborn-piglet-in-india
#8
P A Desingu, Pradeep K Ray, Jeny K John, T Das, Z B Dubal, K K Rajak, R K Singh, G Saikumar
We report here the first complete genome of the Japanese encephalitis virus (JEV) genotype III strain JEV/SW/IVRI/395A/2014, isolated from stillborn piglets in India. It shares 99% identity with strain JaOArS982 and a few other strains from Japan.
January 19, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28104524/the-role-of-antibiotic-prophylaxis-in-the-clean-neurosurgery
#9
YiYao Cao, Ke Pu, Quodong Li, XueJiang Yan, Yue Ma, Kai Xue, ZhiMing Sun, QingGuo Li
OBJECTIVE: To investigate the efficacy of antibiotic prophylaxis (AP) and the risk factors for postoperative infections in clean neurosurgery. METHODS: Data were retrospectively collected on all patients who had undergone clean neurosurgical operation at our institution between January 2009 and December 2014.From January 2009 until October 2011, antibiotic prophylaxis was administered to every clean neurosurgical patient. From November 2011 to December 2014, no antibiotic prophylaxis (n-AP) was prescribed for all clean neurosurgical operations...
January 16, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28104521/endoscopic-versus-microscopic-transsphenoidal-surgery-in-the-treatment-of-pituitary-adenoma-a-systematic-review-and-meta-analysis
#10
Aijun Li, Weisheng Liu, Peicheng Cao, Yuehua Zheng, Zhenfu Bu, Tao Zhou
BACKGROUND: Inconsistent findings have been reported regarding the efficacy and safety of endoscopic and microscopic transsphenoidal surgery for pituitary adenoma. This study aimed to assess the benefits and shortcomings of these surgical methods in patients with pituitary adenoma. METHODS: The electronic databases PubMed, EmBase, and the Cochrane Library were systematically searched, as well as proceedings of major meetings. Eligible studies with retrospective or prospective design that evaluated endoscopic versus microscopic methods in patients with pituitary adenoma were included...
January 16, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28103598/coronavirus-infections-in-the-central-nervous-system-and-respiratory-tract-show-distinct-features-in-hospitalized-children
#11
Yuanyuan Li, Haipeng Li, Ruyan Fan, Bo Wen, Jian Zhang, Xiaoying Cao, Chengwu Wang, Zhanyi Song, Shuochi Li, Xiaojie Li, Xinjun Lv, Xiaowang Qu, Renbin Huang, Wenpei Liu
BACKGROUND/AIMS: Coronavirus (CoV) infections induce respiratory tract illnesses and central nervous system (CNS) diseases. We aimed to explore the cytokine expression profiles in hospitalized children with CoV-CNS and CoV-respiratory tract infections. METHODS: A total of 183 and 236 hospitalized children with acute encephalitis-like syndrome and respiratory tract infection, respectively, were screened for anti-CoV IgM antibodies. The expression profiles of multiple cytokines were determined in CoV-positive patients...
January 20, 2017: Intervirology
https://www.readbyqxmd.com/read/28103209/west-nile-virus-and-other-nationally-notifiable-arboviral-diseases-united-states-2015
#12
Elisabeth Krow-Lucal, Nicole P Lindsey, Jennifer Lehman, Marc Fischer, J Erin Staples
Arthropod-borne viruses (arboviruses) are transmitted to humans primarily through the bites of infected mosquitoes and ticks. The leading cause of domestically acquired arboviral disease in the United States is West Nile virus (WNV) (1). Other arboviruses, including La Crosse, St. Louis encephalitis, Jamestown Canyon, Powassan, and eastern equine encephalitis viruses, also cause sporadic cases and outbreaks. This report summarizes surveillance data reported to CDC in 2015 for nationally notifiable arboviruses...
January 20, 2017: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/28102850/japanese-encephalitis-virus-induces-human-neural-stem-progenitor-cell-death-by-elevating-grp78-phb-and-hnrnpc-through-er-stress
#13
Sriparna Mukherjee, Noopur Singh, Nabonita Sengupta, Mahar Fatima, Pankaj Seth, Anita Mahadevan, Susarla Krishna Shankar, Arindam Bhattacharyya, Anirban Basu
Japanese encephalitis virus (JEV), which is a causative agent of sporadic encephalitis, harbours itself inside the neural stem/progenitor cells. It is a well-known fact that JEV infects neural stem/progenitor cells and decreases their proliferation capacity. With mass spectrometry-based quantitative proteomic study, it is possible to reveal the impact of virus on the stem cells at protein level. Our aim was to perceive the stem cell proteomic response upon viral challenge. We performed a two-dimensional gel electrophoresis-based proteomic study of the human neural stem cells (hNS1 cell line) post JEV infection and found that 13 proteins were differentially expressed...
January 19, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28102519/nmdar-encephalitis-following-herpes-simplex-virus-encephalitis
#14
REVIEW
Jonathan Galli, Stacey L Clardy, Amanda L Piquet
PURPOSE OF REVIEW: Herpes simplex virus encephalitis (HSVE) is often associated with significant morbidity and mortality, and despite appropriate treatment with antivirals, worsening of neurological symptoms or relapse occurs in a subset of patients. Recent data suggests that many relapses are likely caused by a secondary immune response, with the N-methyl-D-aspartate receptor (NMDAR) antibody being the most commonly associated autoantibody. We provide a review of the relevant literature, examining the relationship between HSVE and development of autoimmunity...
January 2017: Current Infectious Disease Reports
https://www.readbyqxmd.com/read/28101529/cortico-cortical-connections-of-primary-sensory-areas-and-associated-symptoms-in-migraine
#15
Duncan J Hodkinson, Rosanna Veggeberg, Aaron Kucyi, Koene R A van Dijk, Sophie L Wilcox, Steven J Scrivani, Rami Burstein, Lino Becerra, David Borsook
Migraine is a recurring, episodic neurological disorder characterized by headache, nausea, vomiting, and sensory disturbances. These events are thought to arise from the activation and sensitization of neurons along the trigemino-vascular pathway. From animal studies, it is known that thalamocortical projections play an important role in the transmission of nociceptive signals from the meninges to the cortex. However, little is currently known about the potential involvement of cortico-cortical feedback projections from higher-order multisensory areas and/or feedforward projections from principle primary sensory areas or subcortical structures...
November 2016: ENeuro
https://www.readbyqxmd.com/read/28101474/the-laboratory-diagnosis-of-autoimmune-encephalitis
#16
REVIEW
Sang Kun Lee, Soon-Tae Lee
Autoimmune encephalitis is a group of encephalitis syndromes that cause altered mentality, memory decline, or seizures in association with the presence of serum and cerebrospinal fluid (CSF) autoantibodies (auto-Abs). An early diagnosis enables early treatments. The detection of auto-Abs is a confirmatory diagnosis. Tissue-based assay, cell-based immunoassay, and immunoblotting are used to detect various autoantibodies. The CSF test for the presence of antibodies is important because it is more sensitive and reflects disease activity in many autoimmune encephalitis, although antibody tests can be negative even in the presence of autoimmune encephalitis...
December 2016: Journal of Epilepsy Research
https://www.readbyqxmd.com/read/28101360/successful-treatment-of-anti-nmda-receptor-encephalitis-with-a-prompt-ovarian-tumour-removal-and-prolonged-course-of-plasmapheresis-a-case-report
#17
Elzbieta Rypulak, Michal Borys, Pawel Piwowarczyk, Magdalena Fijalkowska, Beata Potrec, Justyna Sysiak, Janusz Spustek, Alicja Bartkowska-Sniatkowska, Jan Kotarski, Waldemar A Turski, Konrad Rejdak, Miroslaw Czuczwar
Anti-N-methyl-d-aspartate-receptor (NMDAR) encephalitis is an uncommon autoimmune disorder with a wide spectrum of neuropsychiatric symptoms. There is a great requirement to emphasize the importance of a multidisciplinary team approach in the process of diagnosis and treatment of the potentially fatal condition, including psychiatrists, neurologists, gynaecologists and intensivists. Physicians must be aware that psychiatric and neurological disorders, which are typical features for NMDAR encephalitis in young women with ovarian tumours, may progress into status epilepticus and respiratory insufficiency...
December 2016: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28101180/acute-renal-injury-induced-by-valacyclovir-hydrochloride-a-case-report
#18
Yanning Zhang, Yuxi Cong, Yan Teng
Acyclovir has been a frequently used antiviral agent in the clinical treatment of leukemia, acute encephalitis, malignant tumor and herpes simplex. The adverse effects of this drug have been widely described in clinical practice. In the present study, a case of a 35-year-old female patient diagnosed with herpes simplex, who developed acute renal injury following treatment with valacyclovir hydrochloride, is described. Kidney biopsy, light microscopy and laboratory examination were performed, and all findings revealed the signs of evident vacuolar degeneration of capillary endothelial and renal tubular epithelial cells, erythrocyte aggregation in partial renal tubule and microvilli exfoliation from epithelial cells...
December 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28101036/anti-n-methyl-d-aspartate-receptor-encephalitis-in-hiv-infection
#19
Eunice Patarata, Vera Bernardino, Ana Martins, Rui Pereira, Conceição Loureiro, Maria Francisca Moraes-Fontes
Anti-N-methyl-D-aspartate receptor (anti-NMDAR) encephalitis is a rare condition characterized by emotional and behavioral disturbances, dyskinesias, and extrapyramidal signs. It occurs in young women of reproductive age and is classically described as a paraneoplastic phenomenon. We present a 36-year-old, HIV-positive female who was admitted to the hospital in an acute confusional state, with a stiff posture, periods of motor agitation, and myoclonic jerks of the hands. Her mental state progressively deteriorated...
September 2016: Case Reports in Neurology
https://www.readbyqxmd.com/read/28100861/-a-case-of-intracranial-localized-castleman-s-disease-mimicking-convexity-meningioma
#20
Keisuke Ozono, Takashi Fujimoto, Makoto Hirose, Ichiro Kawahara, Kazuyoshi Uchihashi
A 68-year-old man presented with abnormal behavior and Todd's paralysis on the right side after having taken a bath. Computed tomography and magnetic resonance imaging revealed a tumor mimicking convexity meningioma that had a perifocal edema, although its mass was not very large. The patient underwent surgery, and full recovery was achieved following a total removal of the lesion. Pathohistological examination demonstrated an intermediate type of Castleman's disease. The final diagnosis was intracranial localized Castleman's disease because the results of the full physical examination and laboratory analyses were normal...
January 2017: No Shinkei Geka. Neurological Surgery
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