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https://www.readbyqxmd.com/read/27926989/targeting-gm-csf-in-epithelial-and-vascular-remodeling-in-experimental-eosinophilic-esophagitis
#1
Eóin N McNamee, Kathryn A Biette, Juliet Hammer, Rachel Harris, Heather Miyazawa, James J Lee, Glenn T Furuta, Joanne C Masterson
BACKGROUND: Eosinophilic esophagitis (EoE) is a chronic antigen-mediated clinicopathologic disease of the esophagus characterized by an eosinophil-predominant inflammatory infiltrate. A clinical hallmark is extensive tissue remodeling including basal zone hyperplasia, fibrosis and angiogenesis. However, the cellular mechanisms responsible for these processes are not fully defined. We hypothesized that targeting GM-CSF (an agonist cytokine linked with eosinophil survival and activation) would be protective in a pre-clinical model of EoE...
December 7, 2016: Allergy
https://www.readbyqxmd.com/read/27926984/involvement-of-chemokine-cxcl11-in-the-development-of-morphine-tolerance-in-rats-with-cancer-induced-bone-pain
#2
Genhua Guo, Yawen Peng, Bingrui Xiong, Daiqiang Liu, Huilian Bu, Xuebi Tian, Hui Yang, Zhen Wu, Fei Cao, Feng Gao
Morphine is viewed as one of the classical treatments for intractable pain, but its role is limited by side effects, including analgesic tolerance. A few chemokines have been reported to be engaged in the mechanisms of morphine tolerance. However, the exact roles of CXCL11 in chronic morphine tolerance remain unknown. In this study, Walker 256 mammary gland carcinoma cells were inoculated into the tibia of rats to provoke cancer-induced bone pain (CIBP). Then morphine was intrathecally administered twice daily for 7 consecutive days to induce drug tolerance...
December 7, 2016: Journal of Neurochemistry
https://www.readbyqxmd.com/read/27926858/g-protein-coupled-receptor-2-interacting-protein-1-controls-stalk-cell-fate-by-inhibiting-delta-like-4-notch1-signaling
#3
Syamantak Majumder, GuoFu Zhu, Xiangbin Xu, Sharon Senchanthisai, Dongyang Jiang, Hao Liu, Chao Xue, Xiaoqun Wang, Heidi Coia, Zhaoqiang Cui, Elaine M Smolock, Richard T Libby, Bradford C Berk, Jinjiang Pang
The spatiotemporal localization and expression of Dll4 are critical for sprouting angiogenesis. However, the related mechanisms are poorly understood. Here, we show that G-protein-coupled receptor-kinase interacting protein-1 (GIT1) is a robust endogenous inhibitor of Dll4-Notch1 signaling that specifically controls stalk cell fate. GIT1 is highly expressed in stalk cells but not in tip cells. GIT1 deficiency remarkably enhances Dll4 expression and Notch1 signaling, resulting in impaired retinal sprouting angiogenesis, which can be rescued by treatment with the Notch inhibitor or Dll4 neutralizing antibody...
December 6, 2016: Cell Reports
https://www.readbyqxmd.com/read/27926826/potential-of-a-bpv1-l1-vlp-vaccine-to-prevent-bpv1-or-bpv2-induced-pseudo-sarcoid-formation-and-safety-and-immunogenicity-of-ecpv2-l1-vlps-in-the-horse
#4
Edmund K Hainisch, Hans Abel-Reichwald, Saeed Shafti-Keramat, Barbara Pratscher, Annunziata Corteggio, Giuseppe Borzacchiello, Maria Wetzig, Christoph Jindra, Alexander Tichy, Reinhard Kirnbauer, Sabine Brandt
We have previously shown that immunization of horses with BPV1 L1 virus-like particles (VLP) is safe and highly immunogenic, and that bovine papillomavirus types 1 and 2 (BPV1, BPV2) are closely related serotypes. Here we evaluated the protective potential of a BPV1 L1 VLP vaccine against experimental BPV1 and BPV2 challenge, and studied the safety and immunogenicity of a bivalent EcPV2/BPV1 L1 VLP vaccine. Fourteen healthy horses were immunized with BPV1 L1 VLPs (100 µg/injection) plus adjuvant on days 0 and 28, whilst seven remained unvaccinated...
December 7, 2016: Journal of General Virology
https://www.readbyqxmd.com/read/27926815/identification-of-lysophospholipase-protein-from-spiroplasma-eriocheiris-and-verification-of-its-function
#5
Huanxi Zhu, Peng Liu, Jie Du, Jian Wang, Yunting Jing, Jia Zhang, Wei Gu, Wen Wang, Qingguo Meng
Spiroplasma eriocheiris is known to cause the tremor disease in the Chinese mitten crab Eriocheir sinensis; however, the molecular characterization of this pathogen is still unclear. S. eriocheiris has the ability to invade and survive within mouse 3T6 cells. The invasion process may require causing damage to the host cell membrane by chemical, physical, or enzymatic means. In this study, we systematically characterized a novel lysophospholipase (lysoPL) of S. eriocheiris TDA-040725-5T. The gene that encodes lysoPL in S...
December 7, 2016: Microbiology
https://www.readbyqxmd.com/read/27926486/novel-epstein-barr-virus-like-particles-incorporating-gh-gl-ebna1-or-gb-lmp2-induce-high-neutralizing-antibody-titers-and-ebv-specific-t-cell-responses-in-immunized-mice
#6
Elizabeth M Perez, Joslyn Foley, Timelia Tison, Rute Silva, Javier Gordon Ogembo
Previous Epstein-Barr virus (EBV) prophylactic vaccines based on the major surface glycoprotein gp350/220 as an immunogen have failed to block viral infection in humans, suggesting a need to target other viral envelope glycoproteins. In this study, we reasoned that incorporating gH/gL or gB, critical glycoproteins for viral fusion and entry, on the surface of a virus-like particle (VLP) would be more immunogenic than gp350/220 for generating effective neutralizing antibodies to prevent viral infection of both epithelial and B cell lines...
December 1, 2016: Oncotarget
https://www.readbyqxmd.com/read/27925510/passive-therapy-with-humanized-anti-staphylococcal-enterotoxin-b-antibodies-attenuates-systemic-inflammatory-response-and-protects-from-lethal-pneumonia-caused-by-staphylococcal-enterotoxin-b-producing-staphylococcus-aureus
#7
Melissa J Karau, Mulualem E Tilahun, Ashton Krogman, Barbara A Osborne, Richard A Goldsby, Chella S David, Jayawant N Mandrekar, Robin Patel, Govindarajan Rajagopalan
Drugs such as linezolid that inhibit bacterial protein synthesis may be beneficial in treating infections caused by toxigenic Staphylococcus aureus. As protein synthesis inhibitors have no effect on preformed toxins, neutralization of pathogenic exotoxins with anti-toxin antibodies may be beneficial in conjunction with antibacterial therapy. Herein, we evaluated the efficacy of human-mouse chimeric high-affinity neutralizing anti-staphylococcal enterotoxin B (SEB) antibodies in the treatment of experimental pneumonia caused by SEB-producing S...
December 7, 2016: Virulence
https://www.readbyqxmd.com/read/27925405/animal-to-human-dose-translation-of-obiltoxaximab-for-treatment-of-inhalational-anthrax-under-the-us-fda-animal-rule
#8
C F Nagy, J Mondick, N Serbina, L S Casey, S E Carpenter, J French, R Guttendorf
Obiltoxaximab, a monoclonal antibody against protective antigen (PA), is approved for treatment of inhalational anthrax under the US Food and Drug Administration's (FDA) Animal Rule. The human dose was selected and justified by comparing observed obiltoxaximab exposures in healthy and infected New Zealand White rabbits and cynomolgus macaques to observed exposures in healthy humans, to simulated exposures in healthy and infected humans, and to serum PA levels in infected animals. In humans, at 16 mg/kg intravenous, obiltoxaximab AUC was >2 times that in animals, while maximum serum concentrations were comparable to those in animals and were maintained in excess of the concentration required for PA neutralization in infected animals for 2-3 weeks...
December 7, 2016: Clinical and Translational Science
https://www.readbyqxmd.com/read/27925289/seroepidemiology-of-human-parechovirus-types-1-3-and-6-in-yamagata-japan-in-2014
#9
Shizuka Tanaka, Yoko Aoki, Yohei Matoba, Kazue Yahagi, Tsutomu Itagaki, Yoko Matsuzaki, Katsumi Mizuta
To clarify the seroepidemiology of human parechovirus type 1 (HPeV1), 3 and 6, neutralizing antibodies (NT Abs) were measured in 214 serum specimens collected in 2014 in Yamagata, Japan. The seroprevalence against HPeV1 was 100% for all age groups, while that against HPeV3 and HPeV6 among all residents was 79.4% and 66.8%, respectively. The genometric mean titers of NT Abs against HPeV1, 3 and 6 among all residents were 755.2, 255.0 and 55.8, respectively. Our study indicated that HPeV1 is the most prevalent HPeV circulating in Yamagata, followed by HPeV3 and HPeV6...
December 7, 2016: Microbiology and Immunology
https://www.readbyqxmd.com/read/27924646/influence-of-anti-tnf-immunogenicity-on-safety-in-rheumatic-disease-a-narrative-review
#10
Andrea Matucci, Daniele Cammelli, Fabrizio Cantini, Delia Goletti, Valentina Marino, Giuseppe Maria Milano, Raffaele Scarpa, Giuliano Tocci, Enrico Maggi, Alessandra Vultaggio
Tumor necrosis factor-alpha (TNF-α) antagonists have been shown to be effective in the treatment of chronic inflammatory rheumatic conditions. The use of anti-TNF agents, combined with improved diagnosis, aggressive regimens and regular monitoring, have substantially improved patient outcomes. However, all biological agents are immunogenic, resulting in the formation of anti-drug antibodies (ADAs), which can neutralize drug activity leading to loss of response and potential relapse. In addition, ADAs can also cause serious adverse events such as infusion hypersensitivity reactions...
December 2016: Expert Opinion on Drug Safety
https://www.readbyqxmd.com/read/27923955/measles-outbreak-among-previously-immunized-healthcare-workers-the-netherlands-2014
#11
Susan J M Hahné, Laura M Nic Lochlainn, Nathalie D van Burgel, Jeroen Kerkhof, Jussi Sane, Kioe Bing Yap, Rob S van Binnendijk
BACKGROUND:  We investigated a measles outbreak among healthcare workers (HCWs) by assessing laboratory characteristics, measles vaccine effectiveness, and serological correlates for protection. METHODS:  Cases were laboratory-confirmed measles in HCWs from hospital X during weeks 12-20 of 2014. We assessed cases' severity and infectiousness by using a questionnaire. We tested cases' sera for measles immunoglobulin M, immunoglobulin G, avidity, and plaque reduction neutralization (PRN)...
December 15, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27923951/maternal-antibody-responses-and-nonprimary-congenital-cytomegalovirus-infection-of-hiv-1-exposed-infants
#12
Kristy M Bialas, Daniel Westreich, Eduardo Cisneros de la Rosa, Cody S Nelson, Lawrence M Kauvar, Tong-Ming Fu, Sallie R Permar
Risk of congenital cytomegalovirus (cCMV) transmission is highly dependent on the presence of preexisting maternal immunity, with the lowest rates observed in CMV-seroimmune populations. Among infants of CMV-seroimmune women, those who are exposed to human immunodeficiency virus (HIV) have an increased risk of acquiring cCMV infection as compared to HIV-unexposed infants. To better understand the risk factors of nonprimary cCMV transmission in HIV-infected women, we performed a case-control study in which CMV-specific plasma antibody responses from 19 CMV-transmitting and 57 CMV-nontransmitting women with chronic CMV/HIV coinfection were evaluated for the ability to predict the risk of cCMV infection...
December 15, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27923950/results-of-a-zika-virus-zikv-immunoglobulin-m-specific-diagnostic-assay-are-highly-correlated-with-detection-of-neutralizing-anti-zikv-antibodies-in-neonates-with-congenital-disease
#13
Marli T Cordeiro, Carlos A A Brito, Lindomar J Pena, Priscila M S Castanha, Laura H V G Gil, Kennya G S Lopes, Rafael Dhalia, Jucille A Meneses, Ana C Ishigami, Luisa M Mello, Liciana X E Alencar, Klarissa M Guarines, Laura C Rodrigues, Ernesto T A Marques
BACKGROUND:  Usually, immunoglobulin M (IgM) serologic analysis is not sufficiently specific to confirm Zika virus (ZIKV) infection. However, since IgM does not cross the placenta, it may be a good marker of infection in neonates. METHODS:  We tested blood from 42 mothers and neonates with microcephaly and collected cerebrospinal fluid (CSF) specimens from 30 neonates. Molecular assays were performed for detection of ZIKV, dengue virus, and chikungunya virus; IgM enzyme-linked immunosorbent assays and plaque-reduction neutralization tests (PRNTs) were performed to detect ZIKV and dengue virus...
December 15, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27923925/biliary-secretion-of-quasi-enveloped-human-hepatitis-a-virus
#14
Asuka Hirai-Yuki, Lucinda Hensley, Jason K Whitmire, Stanley M Lemon
: Hepatitis A virus (HAV) is an unusual picornavirus that is released from cells cloaked in host-derived membranes. These quasi-enveloped virions (eHAV) are the only particle type circulating in blood during infection, whereas only nonenveloped virions are shed in feces. The reason for this is uncertain. Hepatocytes, the only cell type known to support HAV replication in vivo, are highly polarized epithelial cells with basolateral membranes facing onto hepatic (blood) sinusoids and apical membranes abutting biliary canaliculi from which bile is secreted to the gut...
December 6, 2016: MBio
https://www.readbyqxmd.com/read/27923570/recombinant-dna-vaccine-of-hantavirus-gn-and-lamp1-induced-long-term-immune-protection-in-mice
#15
Dong-Bo Jiang, Li-Juan Sun, Lin-Feng Cheng, Jin-Peng Zhang, Shao-Bo Xiao, Yuan-Jie Sun, Shu-Ya Yang, Jing Wang, Fang-Lin Zhang, Kun Yang
BACKGROUND: Prophylaxis is widely adopted the best choice against Hemorrhagic fever with renal syndrome (HFRS) caused by Hantavirus. However, loss of memory immune response maintenance remains as major shortcoming in current HFRS vaccine. A recombinant DNA vaccine, pVAX-LAMP/Gn was previously proved efficient, requiring long-term evaluations. METHODS & RESULTS: Immune responses of Balb/c mice were assessed by specific and neutralizing antibodies, interferon-γ ELISpot assay, and cytotoxic T-lymphocyte cytotoxicity assay...
December 3, 2016: Antiviral Research
https://www.readbyqxmd.com/read/27923501/influenza-a-virus-vaccines-for-swine
#16
Amy L Vincent, Daniel R Perez, Daniela Rajao, Tavis K Anderson, Eugenio J Abente, Rasna R Walia, Nicola S Lewis
Economic losses due to influenza A virus (IAV) infections are substantial and a global problem, ranking among the top three major health challenges in the swine industry. Currently, H1 and H3 subtypes circulate in pigs globally associated with different combinations of N1 and N2 subtypes; however, the origin, gene constellation, and antigenic makeup of IAV vary greatly on different continents. Vaccination is one means of mitigating the effects of IAV disease, and vaccines are most effective if the strains included closely match the currently circulating strains in pigs...
November 24, 2016: Veterinary Microbiology
https://www.readbyqxmd.com/read/27920759/immune-responses-to-influenza-virus-and-its-correlation-to-age-and-inherited-factors
#17
REVIEW
Azadeh Bahadoran, Sau H Lee, Seok M Wang, Rishya Manikam, Jayakumar Rajarajeswaran, Chandramathi S Raju, Shamala D Sekaran
Influenza viruses belong to the family Orthomyxoviridae of enveloped viruses and are an important cause of respiratory infections worldwide. The influenza virus is able to infect a wide variety species as diverse as poultry, marine, pigs, horses, and humans. Upon infection with influenza virus the innate immunity plays a critical role in efficient and rapid control of viral infections as well as in adaptive immunity initiation. The humoral immune system produces antibodies against different influenza antigens, of which the HA-specific antibody is the most important for neutralization of the virus and thus prevention of illness...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27919754/neutralization-takes-precedence-over-igg-or-iga-isotype-related-functions-in-mucosal-hiv-1-antibody-mediated-protection
#18
Rena D Astronomo, Sampa Santra, Lamar Ballweber-Fleming, Katharine G Westerberg, Linh Mach, Tiffany Hensley-McBain, Laura Sutherland, Benjamin Mildenberg, Georgeanna Morton, Nicole L Yates, Gregory J Mize, Justin Pollara, Florian Hladik, Christina Ochsenbauer, Thomas N Denny, Ranjit Warrier, Supachai Rerks-Ngarm, Punnee Pitisuttithum, Sorachai Nitayapan, Jaranit Kaewkungwal, Guido Ferrari, George M Shaw, Shi-Mao Xia, Hua-Xin Liao, David C Montefiori, Georgia D Tomaras, Barton F Haynes, M Juliana McElrath
HIV-1 infection occurs primarily through mucosal transmission. Application of biologically relevant mucosal models can advance understanding of the functional properties of antibodies that mediate HIV protection, thereby guiding antibody-based vaccine development. Here, we employed a human ex vivo vaginal HIV-1 infection model and a rhesus macaque in vivo intrarectal SHIV challenge model to probe the protective capacity of monoclonal broadly-neutralizing (bnAb) and non-neutralizing Abs (nnAbs) that were functionally modified by isotype switching...
November 21, 2016: EBioMedicine
https://www.readbyqxmd.com/read/27919748/anti-cd24-neutralizing-antibody-exacerbates-concanavalin-a-induced-acute-liver-injury-in-mice-via-liver-m1-macrophages
#19
Hongyu Liu, Hai Lei, Jingqi Tian, Jie Xiang, Yatong Fan, Hua Zhang, Jianhui Liu, Xuejun Zhang
Liver largely relies on its innate immune immunity to initiate quick and effective defense against potentially toxic agents, and innate immune cells are major players in this process. However, excessive inflammation due to out-of-control immune response may eventually cause liver injury. Thus, it is important to fully understand the regulatory mechanisms associated with liver inflammation. Here we show that anti-CD24 neutralizing antibody exacerbates hepatic inflammation in a Con A-induced acute liver injury murine model...
December 2, 2016: Immunology Letters
https://www.readbyqxmd.com/read/27919629/pre-clinical-development-of-a-hydrogen-peroxide-inactivated-west-nile-virus-vaccine
#20
Elizabeth A Poore, Dawn K Slifka, Hans-Peter Raué, Archana Thomas, Erika Hammarlund, Benjamin K Quintel, Lindsay L Torrey, Ariel M Slifka, Justin M Richner, Melissa E Dubois, Lawrence P Johnson, Michael S Diamond, Mark K Slifka, Ian J Amanna
West Nile virus (WNV) is a mosquito-transmitted pathogen with a wide geographical range that can lead to long-term disability and death in some cases. Despite the public health risk posed by WNV, including an estimated 3 million infections in the United States alone, no vaccine is available for use in humans. Here, we present a scaled manufacturing approach for production of a hydrogen peroxide-inactivated whole virion WNV vaccine, termed HydroVax-001WNV. Vaccination resulted in robust virus-specific neutralizing antibody responses and protection against WNV-associated mortality in mice or viremia in rhesus macaques (RM)...
December 2, 2016: Vaccine
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