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https://www.readbyqxmd.com/read/27916716/effects-of-a-non-competitive-n-methyl-d-aspartate-nmda-antagonist-tiletamine-in-adult-zebrafish
#1
Tatiana O Kolesnikova, Sergey L Khatsko, Vadim A Shevyrin, Yuri Yu Morzherin, Allan V Kalueff
Tiletamine is a non-competitive N-methyl-d-aspartate (NMDA) receptor antagonist chemically related to ketamine and phencyclidine. A common veterinary anesthetic drug, tiletamine is currently a Schedule III controlled substance. This compound exerts sedative effects in humans and animals, also having an abuse potential, toxicity and dissociative hallucinogenic properties clinically. However, the neurotropic profile of tiletamine remains poorly understood, necessitating novel models and in-vivo screens, including non-mammalian species...
December 1, 2016: Neurotoxicology and Teratology
https://www.readbyqxmd.com/read/27916667/development-and-validation-of-an-immunohistochemistry-procedure-for-the-detection-of-a-neurotropic-bovine-astrovirus
#2
Céline L Boujon, Senija Selimovic-Hamza, Ilias Bouzalas, Torsten Seuberlich
Members of the Astroviridae family are best known to cause diarrhea in different mammalian species. Lately, some strains have been associated with encephalitis in humans, minks and cattle. In this study, we developed an immunohistochemistry (IHC) procedure for the detection of a neurotropic bovine astrovirus (BoAstV-CH13/NeuroS1), which is associated with non-suppurative encephalitis in cattle. We expressed five recombinant antigens corresponding to different putative viral proteins of BoAstV-CH13/NeuroS1. Antigens were then used for the production of hyperimmune sera in rabbits...
January 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/27914246/tract-based-analysis-of-white-matter-integrity-in-psychotic-and-nonpsychotic-bipolar-disorder
#3
Andrew Ji, Douglass Godwin, Jerrel Rutlin, Sridhar Kandala, Joshua S Shimony, Daniel Mamah
BACKGROUND: At least 50% of individuals with bipolar disorder (BD) present with psychosis during their lifetime. Psychotic symptoms have sometimes been linked to specific genetic and phenotypic markers. This study aims to explore potential differences between bipolar disorder subtypes by measuring white matter integrity of the brain and relationships with clinical measures. METHODS: Diffusion tensor imaging and clinical measures were acquired from 102 participants, grouped as psychotic bipolar disorder (PBD) (n=48), non-psychotic bipolar disorder (NBD) (n=24), and healthy controls (n=30)...
November 27, 2016: Journal of Affective Disorders
https://www.readbyqxmd.com/read/27883372/a-case-of-transverse-myelitis-caused-by-varicella-zoster-virus-in-an-immunocompetent-older-patient
#4
Jeong Eun Lee, Shinwon Lee, Kye Hyung Kim, Hee Ryeong Jang, Young Joo Park, Jin Suk Kang, Sung Yong Han, Sun Hee Lee
Varicella zoster virus (VZV) is a human neurotropic alphaherpesvirus that causes chickenpox (varicella) in children. VZV reactivation may lead to neurological complications, including transverse myelitis. However, transverse myelitis caused by VZV reactivation is rare in immunocompetent patients. Herein, we report a case of transverse myelitis caused by VZV in an immunocompetent older patient, and confirmed this case by polymerase chain reaction. A 79-year-old woman visited our service with complaints of weakness in the right lower leg, generalized vesicular eruptions, and throbbing pain in the right flank for ten days...
November 11, 2016: Infection & Chemotherapy
https://www.readbyqxmd.com/read/27878462/enterovirus-a71-and-coxsackievirus-a16-show-different-replication-kinetics-in-human-neuronal-and-non-neuronal-cell-lines
#5
Thinesshwary Yogarajah, Kien Chai Ong, David Perera, Kum Thong Wong
Enterovirus A71 (EV-A71) and coxsackievirus A16 (CV-A16) are closely related enteroviruses that cause hand, foot and mouth disease (HFMD) in children. Serious neurological complications almost always occur in EV-A71 infection, but are rare in CV-A16 infection. Based on the hypothesis that this may be because EV-A71 infects neuronal cells more easily than CV-A16, we compared virus infection, replication and spread of EV-A71 and CV-A16 in SK-N-SH cells. We found that CV-A16 invariably showed significantly lower replication and caused less necrotic cell death in SK-N-SH cells, compared with EV-A71...
November 23, 2016: Archives of Virology
https://www.readbyqxmd.com/read/27878262/identification-of-suitable-reference-genes-for-bdv-infected-primary-rat-hippocampal-neurons
#6
Qiang Mao, Lujun Zhang, Yujie Guo, Lu Sun, Siwen Liu, Peng He, Rongzhong Huang, Lin Sun, Shigang Chen, Hong Zhang, Peng Xie
Borna disease virus (BDV) is a neurotropic RNA virus that infects the limbic system of mammals and results in behavioral disorders. The hippocampus is a core region in the limbic system, which contributes to memory and learning and is important in the regulation of emotion. However, no validated microRNA housekeeping genes have yet been identified in BDV‑infected rat primary hippocampal neurons. Proper normalization is key in accurate miRNA expression analysis. The present study used reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR) to evaluate the expression stability of 10 commonly used reference genes [miR‑92a, 5S, U6, miR‑103, miR‑101a, miR-let-7a, miR‑16, E2 small nucleolar RNA (snoRNA), U87 and miR‑191] in BDV‑infected rat hippocampal neurons and non‑infected controls across 12 days post‑infection...
November 22, 2016: Molecular Medicine Reports
https://www.readbyqxmd.com/read/27875780/vp1-residues-around-the-five-fold-axis-of-enterovirus-a71-mediate-heparan-sulfate-interaction
#7
Chee Wah Tan, I-Ching Sam, Vannajan Sanghiran Lee, Hui Vern Wong, Yoke Fun Chan
Enterovirus A71 (EV-A71) is a neurotropic enterovirus that uses heparan sulfate as an attachment receptor. The molecular determinants of EV-A71-heparan sulfate interaction are unknown. With In silico heparin docking and mutagenesis of all possible lysine residues in VP1, we identified that K162, K242 and K244 are responsible for heparin interaction and inhibition. EV-A71 mutants with K242A and K244A rapidly acquired compensatory mutations, T100K or E98A, and Q145R-T237N respectively, which restored the heparin-binding phenotype...
November 19, 2016: Virology
https://www.readbyqxmd.com/read/27872612/systems-biomedicine-of-rabies-delineates-the-affected-signaling-pathways
#8
Sadegh Azimzadeh Jamalkandi, Sayed-Hamidreza Mozhgani, Hamid Gholami Pourbadie, Mehdi Mirzaie, Farshid Noorbakhsh, Behrouz Vaziri, Alireza Gholami, Naser Ansari-Pour, Mohieddin Jafari
The prototypical neurotropic virus, rabies, is a member of the Rhabdoviridae family that causes lethal encephalomyelitis. Although there have been a plethora of studies investigating the etiological mechanism of the rabies virus and many precautionary methods have been implemented to avert the disease outbreak over the last century, the disease has surprisingly no definite remedy at its late stages. The psychological symptoms and the underlying etiology, as well as the rare survival rate from rabies encephalitis, has still remained a mystery...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27849036/enterovirus-71-infection-of-motor-neuron-like-nsc-34-cells-undergoes-a-non-lytic-exit-pathway
#9
Issac Horng Khit Too, Huimin Yeo, October Michael Sessions, Benedict Yan, Eshele Anak Libau, Josephine L C Howe, Ze Qin Lim, Shalini Suku-Maran, Wei-Yi Ong, Kaw Bing Chua, Boon Seng Wong, Vincent T K Chow, Sylvie Alonso
Enterovirus 71 (EV71) causing Hand, Foot and Mouth Disease, is regarded as the most important neurotropic virus worldwide. EV71 is believed to replicate in muscles and infect motor neurons to reach the central nervous system (CNS). To further investigate the mechanisms involved, we have employed the motor neuron cell line NSC-34. NSC-34 cells were permissive to EV71 and virus production yields were strain-dependent with differential efficacy at the entry, replication and egress steps. Furthermore, unlike all the other cell lines previously reported, EV71-infected NSC-34 cells neither displayed cytopathic effect nor underwent apoptosis...
November 16, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27848981/listeria-monocytogenes-sequence-type-1-is-predominant-in-ruminant-rhombencephalitis
#10
Margaux Dreyer, Lisandra Aguilar-Bultet, Sebastian Rupp, Claudia Guldimann, Roger Stephan, Alexandra Schock, Arthur Otter, Gertraud Schüpbach, Sylvain Brisse, Marc Lecuit, Joachim Frey, Anna Oevermann
Listeria (L.) monocytogenes is an opportunistic pathogen causing life-threatening infections in diverse mammalian species including humans and ruminants. As little is known on the link between strains and clinicopathological phenotypes, we studied potential strain-associated virulence and organ tropism in L. monocytogenes isolates from well-defined ruminant cases of clinical infections and the farm environment. The phylogeny of isolates and their virulence-associated genes were analyzed by multilocus sequence typing (MLST) and sequence analysis of virulence-associated genes...
November 16, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27842550/change-in-the-responsiveness-of-interferon-stimulated-genes-during-early-pregnancy-in-cows-with-borna-virus-1-infection
#11
Tadashi Takino, Taku Okamura, Tatsuya Ando, Katsuro Hagiwara
BACKGROUND: Borna disease virus is a neurotropic pathogen and infects the central nervous system. This virus infected a variety of animal species including cows. The most of cows infected with Borna disease virus 1 (BoDV-1) exhibit subclinical infection without any neurological symptoms throughout their lifetime. We previously reported on the low conception rates in-seropositive cows. Interferon-τ (IFN-τ) plays an important role in stable fertilization, and is produced from the fetal side following embryo growth at 15-40 days of pregnancy...
November 14, 2016: BMC Veterinary Research
https://www.readbyqxmd.com/read/27834852/tonsil-derived-mesenchymal-stem-cells-differentiate-into-a-schwann-cell-phenotype-and-promote-peripheral-nerve-regeneration
#12
Namhee Jung, Saeyoung Park, Yoonyoung Choi, Joo-Won Park, Young Bin Hong, Hyun Ho Choi Park, Yeonsil Yu, Geon Kwak, Han Su Kim, Kyung-Ha Ryu, Jae Kwang Kim, Inho Jo, Byung-Ok Choi, Sung-Chul Jung
Schwann cells (SCs), which produce neurotropic factors and adhesive molecules, have been reported previously to contribute to structural support and guidance during axonal regeneration; therefore, they are potentially a crucial target in the restoration of injured nervous tissues. Autologous SC transplantation has been performed and has shown promising clinical results for treating nerve injuries and donor site morbidity, and insufficient production of the cells have been considered as a major issue. Here, we performed differentiation of tonsil-derived mesenchymal stem cells (T-MSCs) into SC-like cells (T-MSC-SCs), to evaluate T-MSC-SCs as an alternative to SCs...
November 9, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27830593/microfluidic-based-platform-to-mimic-the-in-vivo-peripheral-administration-of-neurotropic-nanoparticles
#13
Cátia Df Lopes, Carla P Gomes, Estrela Neto, Paula Sampaio, Paulo Aguiar, Ana P Pêgo
AIM: Propose a nanoparticle for neuron-targeted retrograde gene delivery and describe a microfluidic-based culture system to provide insight into vector performance and safety. METHODS: Using compartmentalized neuron cultures we dissected nanoparticle bioactivity upon delivery taking advantage of (quantitative) bioimaging tools. RESULTS: Targeted and nontargeted nanoparticles were internalized at axon terminals and retrogradely transported to cell bodies at similar average velocities but the former have shown an axonal flux 2...
November 10, 2016: Nanomedicine
https://www.readbyqxmd.com/read/27816247/the-effect-of-low-intensity-ultrasound-on-brain-derived-neurotropic-factor-expression-in-a-rat-sciatic-nerve-crushed-injury-model
#14
Xue-Jun Ni, Xiao-Dong Wang, Ya-Hong Zhao, Hua-Lin Sun, Yu-Ming Hu, Jian Yao, Yi Wang
Low-intensity ultrasound (LIU) can improve nerve regeneration and functional recovery after peripheral nerve crush injury, but the underlying mechanism is not clear. The objective of this study was to examine the effects of LIU on rat sciatic crush injury and to investigate a possible molecular mechanism. Adult male Sprague-Dawley rats underwent left sciatic nerve crush surgery and were then randomized into two groups: a treatment group that received LIU every other d, and a control group that received sham exposure...
November 2, 2016: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/27812690/characterizing-the-pattern-of-anomalies-in-congenital-zika-syndrome-for-pediatric-clinicians
#15
Cynthia A Moore, J Erin Staples, William B Dobyns, André Pessoa, Camila V Ventura, Eduardo Borges da Fonseca, Erlane Marques Ribeiro, Liana O Ventura, Norberto Nogueira Neto, J Fernando Arena, Sonja A Rasmussen
Importance: Zika virus infection can be prenatally passed from a pregnant woman to her fetus. There is sufficient evidence to conclude that intrauterine Zika virus infection is a cause of microcephaly and serious brain anomalies, but the full spectrum of anomalies has not been delineated. To inform pediatric clinicians who may be called on to evaluate and treat affected infants and children, we review the most recent evidence to better characterize congenital Zika syndrome. Observations: We reviewed published reports of congenital anomalies occurring in fetuses or infants with presumed or laboratory-confirmed intrauterine Zika virus infection...
November 3, 2016: JAMA Pediatrics
https://www.readbyqxmd.com/read/27812212/genetic-contribution-of-mhc-class-ii-genes-in-susceptibility-to-west-nile-virus-infection
#16
Constantina A Sarri, Maria Markantoni, Costas Stamatis, Anna Papa, Athanasios Tsakris, Danai Pervanidou, Agoritsa Baka, Constantina Politis, Charalambos Billinis, Christos Hadjichristodoulou, Zissis Mamuris
WNV is a zoonotic neurotropic flavivirus that has recently emerged globally as a significant cause of viral encephalitis. The last five years, 624 incidents of WNV infection have been reported in Greece. The risk for severe WNV disease increases among immunosuppressed individuals implying thus the contribution of the MHC locus to the control of WNV infection. In order to investigate a possible association of MHC class II genes, especially HLA-DPA1, HLA-DQA1, HLA-DRB1, we examined 105 WNV patients, including 68 cases with neuroinvasive disease and 37 cases with mild clinical phenotype, collected during the period from 2010 to2013, and 100 control individuals selected form the Greek population...
2016: PloS One
https://www.readbyqxmd.com/read/27798161/tlr8-couples-socs-1-and-restrains-tlr7-mediated-antiviral-immunity-exacerbating-west-nile-virus-infection-in-mice
#17
Amber M Paul, Dhiraj Acharya, Linda Le, Penghua Wang, Dobrivoje S Stokic, A Arturo Leis, Lena Alexopoulou, Terrence Town, Richard A Flavell, Erol Fikrig, Fengwei Bai
West Nile virus (WNV) is a neurotropic ssRNA flavivirus that can cause encephalitis, meningitis, and death in humans and mice. Human TLR7 and TLR8 and mouse TLR7 recognize viral ssRNA motifs and induce antiviral immunity. However, the role of mouse TLR8 in antiviral immunity is poorly understood. In this article, we report that TLR8-deficient (Tlr8(-/-)) mice were resistant to WNV infection compared with wild-type controls. Efficient WNV clearance and moderate susceptibility to WNV-mediated neuronal death in Tlr8(-/-) mice were attributed to overexpression of Tlr7 and IFN-stimulated gene-56 expression, whereas reduced expression of the proapoptotic gene coding Bcl2-associated X protein was observed...
December 1, 2016: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/27795420/pivotal-role-of-rip1-and-mlkl-in-neuronal-cell-death-induced-by-the-human-neuroinvasive-coronavirus-oc43
#18
Mathieu Meessen-Pinard, Alain Le Coupanec, Marc Desforges, Pierre J Talbot
: Human coronaviruses (HCoV) are respiratory pathogens with neuroinvasive, neurotropic and neurovirulent properties, highlighting the importance to study the potential implication of these viruses in neurological diseases. The OC43 strain (HCoV-OC43) was reported to induce neuronal cell death which may participate in neuropathogenesis. Here, we show that HCoV-OC43 harboring two point mutations in the spike glycoprotein (rOC/Us183-241) was more neurovirulent than the wild-type HCoV-OC43 (rOC/ATCC) in mice and induced more cell death in murine and human neuronal cells...
October 19, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27790096/intranasal-location-and-immunohistochemical-characterization-of-the-equine-olfactory-epithelium
#19
Alexandra Kupke, Sabine Wenisch, Klaus Failing, Christiane Herden
The olfactory epithelium (OE) is the only body site where neurons contact directly the environment and are therefore exposed to a broad variation of substances and insults. It can serve as portal of entry for neurotropic viruses which spread via the olfactory pathway to the central nervous system. For horses, it has been proposed and concluded mainly from rodent studies that different viruses, e.g., Borna disease virus, equine herpesvirus 1 (EHV-1), hendra virus, influenza virus, rabies virus, vesicular stomatitis virus can use this route...
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27785749/revealing-the-neuroendocrine-response-after-remoxipride-treatment-using-multi-biomarker-discovery-and-quantifying-it-by-pk-pd-modeling
#20
Willem J van den Brink, Yin C Wong, Berfin Gülave, Piet H van der Graaf, Elizatbeth C M de Lange
To reveal unknown and potentially important mechanisms of drug action, multi-biomarker discovery approaches are increasingly used. Time-course relationships between drug action and multi-biomarker profiles, however, are typically missing, while such relationships will provide increased insight in the underlying body processes. The aim of this study was to investigate the effect of the dopamine D2 antagonist remoxipride on the neuroendocrine system. Different doses of remoxipride (0, 0.7, 5.2, or 14 mg/kg) were administered to rats by intravenous infusion...
October 26, 2016: AAPS Journal
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