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https://www.readbyqxmd.com/read/28646827/immunization-of-c57bl-6-mice-with-gra2-combined-with-mpl-conferred-partial-immune-protection-against-toxoplasma-gondii
#1
Jalal Babaie, Samira Amiri, Robab Homayoun, Ebrahim Azimi, Reyhaneh Mohabati, Mahboobe Berizi, Reza Sadaie, Majid Golkar
Background: We have previously reported that immunization with GRA2 antigen of Toxoplasma gondii induces protective immunity in CBA/J (H2k) and BALB/c mice (H2d). We aimed to examine whether immunization of a distinct strain of rodent with recombinant dense granule antigens (GRA2) combined with monophosphorryl lipid A (MPL) adjuvant elicits protective immune response against T. gondii. Methods: C57BL/6 (H2b haplotype) mice were immunized with GRA2, formulated in MPL adjuvant...
June 25, 2017: Iranian Biomedical Journal
https://www.readbyqxmd.com/read/28645365/complexity-of-immune-responses-to-aav-transgene-products-example-of-factor-ix
#2
REVIEW
Roland W Herzog
After two decades of research, in vivo gene transfer with adeno-associated viral (AAV) vectors has now resulted in successful treatments and even cures for several human diseases. However, the potential for immune responses against the therapeutic gene products remains one of the concerns as this approach is broadened to more patients, diverse diseases, and target organs. Immune responses following gene transfer of coagulation factor IX (FIX) for the treatment of the bleeding disorder hemophilia B has been extensively investigated in multiple animal models...
May 29, 2017: Cellular Immunology
https://www.readbyqxmd.com/read/28645275/rapid-monocyte-infiltration-following-retinal-detachment-is-dependent-on-non-canonical-il6-signaling-through-gp130
#3
Xinlei Wang, Eric B Miller, Mayank Goswami, Pengfei Zhang, Kaitryn E Ronning, Sarah J Karlen, Robert J Zawadzki, Edward N Pugh, Marie E Burns
BACKGROUND: Retinal detachment (RD) can lead to proliferative vitreoretinopathy (PVR), a leading cause of intractable vision loss. PVR is associated with a cytokine storm involving common proinflammatory molecules like IL6, but little is known about the source and downstream signaling of IL6 and the consequences for the retina. Here, we investigated the early immune response and resultant cytokine signaling following RD in mice. METHODS: RD was induced in C57BL/6 J and IL6 knockout mice, and the resulting inflammatory response was examined using immunohistochemistry and flow cytometry...
June 23, 2017: Journal of Neuroinflammation
https://www.readbyqxmd.com/read/28644063/morphological-and-molecular-characterization-of-metacercaria-of-tylodelphys-digenea-diplostomidae-from-the-piscine-host-mystus-tengara-from-india
#4
Anshu Chaudhary, Shivi Gupta, Chandni Verma, Richa Tripathi, Hridaya Shanker Singh
The diversity and taxonomy of diplostomids infecting freshwater fishes of the Indian region are predominantly poorly known. Yet compared to other trematodes, identification and discrimination of diplostomid metacercaria are difficult using morphology and site of infection. The present study provides the first molecular study of Tylodelphys sp. from India. Specimens of Tylodelphys were collected from the vitreous humor of the eyes and from the brains of siluriform fish, Mystus tengara (Siluriformes: Bagridae) from Hastinapur, Meerut (U...
June 23, 2017: Journal of Parasitology
https://www.readbyqxmd.com/read/28642841/strain-and-dose-dependent-reduction-of-toxoplasma-gondii-burden-in-pigs-is-associated-with-interferon-gamma-production-by-cd8-lymphocytes-in-a-heterologous-challenge-model
#5
Malgorzata Jennes, Stéphane De Craeye, Bert Devriendt, Katelijne Dierick, Pierre Dorny, Eric Cox
Toxoplasma gondii is a worldwide prevalent parasite of humans and animals. The global infection burden exceeds yearly one million disability-adjusted life years (DALY's) in infected individuals. Therefore, effective preventive measures should be taken to decrease the risk of infection in humans. Although human toxoplasmosis is predominantly foodborne by ingestion of tissue cysts in meat from domestic animals such as pigs, the incidence risk is difficult to estimate due to the lack of screening of animals for infection and insights in location and persistence of the parasite in the tissues...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28642154/a-boosting-skin-vaccination-with-dissolving-microneedle-patch-encapsulating-m2e-vaccine-broadens-the-protective-efficacy-of-conventional-influenza-vaccines
#6
Wandi Zhu, Winston Pewin, Chao Wang, Yuan Luo, Gilbert X Gonzalez, Teena Mohan, Mark R Prausnitz, Bao-Zhong Wang
The biodegradable microneedle patch (MNP) is a novel technology for vaccine delivery that could improve the immunogenicity of vaccines. To broaden the protective efficiency of conventional influenza vaccines, a new 4M2e-tFliC fusion protein construct containing M2e sequences from different subtypes was generated. Purified fusion protein was encapsulated into MNPs with a biocompatible polymer for use as a boosting vaccine. The results demonstrated that mice receiving a conventional inactivated vaccine followed by a skin-applied dissolving 4M2e-tFliC MNP boost could better maintain the humoral antibody response than that by the conventional vaccine-prime alone...
June 19, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28642050/the-drosophila-thioester-containing-protein-4-participates-in-the-induction-of-the-cellular-immune-response-to-the-pathogen-photorhabdus
#7
Upasana Shokal, Ioannis Eleftherianos
The function of thioester-containing proteins (TEPs) in the immune defense of the fruit fly Drosophila melanogaster is yet mostly unexplored. Recently, we showed the involvement of TEP4 in the activation of humoral and phenoloxidase immune responses of Drosophila against the pathogenic bacteria Photorhabdus luminescens and Photorhabdus asymbiotica. Here, we investigated the participation of Tep4 in the cellular defense of Drosophila against the two pathogens. We report significantly lower numbers of live and dead plasmatocytes in the tep4 mutants compared to control flies in response to Photorhabdus infection...
June 19, 2017: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/28641561/induction-of-humoral-and-cellular-immune-responses-in-mice-by-multiepitope-vaccines-composing-of-both-t-and-b-lymphocyte-epitopes-of-mage-a3which-are-recombined-into-hbcag
#8
Qingxin Chen, Wenshu Li, Pengfei Wang, Huanyi Shao, Yujie Ding, Wenhuan Wang, Danwei Cen, Yiqi Cai, Xiangyang Xue, Lifang Zhang, Guanbao Zhu
MAGE-A3 is highly expressed in many kinds of malignant diseases, and considered to be an ideal candidate for anti-tumor vaccine. To improve the immunogenicity of epitopes of MAGE-A3, hepatitis B virus core antigen (HBcAg) was used as an immune-carrier by insertion epitopes at HBcAg major immunodominant region (HBcAg(MIR)). In present study, we designed three kinds of MAGE-A3 multiepitopes containing T and B-cell dominant epitope-rich peptides, and constructed three recombinant chimeras of HBcAg(MIR)/MAGE-A3(EPI-1), HBcAg(MIR)/MAGE-A3(EPI-2), and HBcAg(MIR)/MAGE-A3(EPI-3) with prokaryotic codon optimization...
June 20, 2017: Protein and Peptide Letters
https://www.readbyqxmd.com/read/28640745/the-amino-terminal-subdomain-of-glycoprotein-gc-of-schmallenberg-virus-disulfide-bonding-and-structural-determinants-of-neutralization
#9
Gleyder Roman-Sosa, Axel Karger, Franziska Kraatz, Andrea Aebischer, Kerstin Wernike, Pavlo Maksimov, Christopher H Lillig, Ilona Reimann, Emiliana Brocchi, Markus Keller, Martin Beer
Orthobunyaviruses are enveloped viruses that can cause human and animal diseases. A novel and major member is the Schmallenberg virus (SBV), the etiological agent of an emerging disease of ruminants that has been spreading all over Europe since 2011. The glycoproteins Gn and Gc of orthobunyaviruses mediate the viral entry, and specifically Gc is a major target for the humoral immune response. For example, the N terminal subdomain of the SBV glycoprotein Gc is targeted by neutralizing monoclonal antibodies that recognize conformational epitopes...
June 22, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28640199/the-role-of-peripheral-cns-directed-antibodies-in-promoting-inflammatory-cns-demyelination
#10
REVIEW
Silke Kinzel, Martin S Weber
In central nervous system (CNS) demyelinating disorders, such as multiple sclerosis (MS), neuromyelitis optica (NMO) and related NMO-spectrum disorders (NMO-SD), a pathogenic role for antibodies is primarily projected into enhancing ongoing CNS inflammation by directly binding to target antigens within the CNS. This scenario is supported at least in part, by antibodies in conjunction with complement activation in the majority of MS lesions and by deposition of anti-aquaporin-4 (AQP-4) antibodies in areas of astrocyte loss in patients with classical NMO...
June 22, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28639600/effects-of-polysaccharide-fractions-isolated-from-caltha-palustris-l-on-the-activity-of-phagocytic-cells-humoral-immune-response-in-mice-with-collagen-induced-arthritis-a-comparison-with-methotrexate
#11
Agnieszka Suszko, Bożena Obmińska-Mrukowicz
BACKGROUND & OBJECTIVES: The extracts from Caltha palustris L. have been shown to be beneficial for treating arthritis and rheumatism. In this study, the immunomodulatory effects of polysaccharide fractions B and C of C. palustris extracts were studied, using the collagen-induced arthritis (CIA) mouse arthritis experimental model. The aim was to determine the activity of blood phagocytic cells and humoral immune response in CIA mice treated with polysaccharide fractions from C. palustris...
February 2017: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/28638039/-headache-immunology
#12
A V Prishchepa, A B Danilov
The overview is dedicated to the neuroimmunological mechanisms of headache development and chronification. Based on the analyzed data, the authors determined the relationship between immunological parameters and duration, intensity and other characteristics of this disease. These findings confirm that immunocompetent cells can be used as headache biomarkers and predictors of treatment efficacy. Questions about the role of separate parts of the immune system in the development and maintenance of a headache require further research...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28637001/a-novel-method-to-generate-salmonella-typhi-ty21a-ghosts-exploiting-the-%C3%AE-phage-holin-endolysin-system
#13
Gayeon Won, Boram Kim, John Hwa Lee
Human typhoid fever caused by Salmonella Typhi still poses a severe global disease burden in developing countries despite the availability of commercial vaccines. In this study, we constructed a non-living S. Typhi Ty21a vaccine candidate by employing a lambda (λ) phage-derived holin-endolysin system to efficiently construct bacterial ghosts. The lysis plasmid pJHL464 harbors an R lysis cassette that is stringently regulated by dual promoters containing cI857/λPR and ParaBAD/araC components. The plasmid was introduced into an asd gene-deleted S...
June 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28634593/carcinoid-heart-disease-starting-from-heart-failure
#14
Nicole Bertin, Serena Favretto, Francesco Pelizzo, Lucio Mos, Franco Pertoldi, Olga Vriz
Carcinoid syndrome is the constellation of symptoms mediated by humoral factors produced by some carcinoid tumors. It consists primarily of vasomotor symptoms, gastrointestinal hypermotility, hypotension, and bronchospasm, due to the production and release of vasoactive substances. Carcinoid heart disease occurs in more than 50% of patients with carcinoid syndrome; in some cases, it represents the initial manifestation of the disease. We report the case of a 75-year-old woman with a metastatic neuroendocrine tumor admitted to the emergency room for fatigue and heart failure...
April 2017: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/28632942/the-glycans-mediated-mechanism-on-the-interactions-of-gp120-with-cd4-and-antibody-insights-from-molecular-dynamics-simulation
#15
Yan Zhang, Yuzhen Niu, Jia Qi Tian, Xuewei Liu, Xiaojun Yao, Huanxiang Liu
N-linked glycans such as 234 and 276 gp120 glycans are vital components of HIV evasion from humoral immunity and important for HIV-1 neutralization of many broadly neutralizing antibodies (bNAbs). However, it is unknown the action mechanism of two glycans. To investigate the roles of the glycans on the interactions of gp120 with CD4 and antibody, molecular dynamics simulations based on gp120-CD4-8ANC195 complex with 234 and 276 gp120 glycans, 234 gp120 glycan, 276 gp120 glycan and without glycan were performed...
June 20, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28632458/aquaporins-novel-targets-for-age-related-ocular-disorders
#16
Rajkumar Patil, Haishan Wang, Najam A Sharif, Alok Mitra
Aquaporins (AQPs), a large family of membrane protein channels that facilitate transport of water and other small solutes, play important roles in physiological functions and human diseases. Up till now, 13 types of AQPs, numbered 0 through 12, have been identified in various mammalian tissues. Homologous genes for AQPs in amphibians, insects, and bacteria highlight the evolutionary conservation and, thus, the importance of these membrane channels. Many members of the AQP family are expressed in the eye. AQP1, which is a water-selective channel, is expressed in the anterior chamber (cornea, ciliary body, trabecular meshwork) and posterior chamber (retina and microvessels in choroid), controlling the fluid homeostasis in the eye...
June 20, 2017: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28631594/human-picornaviruses-associated-with-neurological-diseases-and-their-neutralization-by-antibodies
#17
Maria Anastasina, Aušra Domanska, Kaia Palm, Sarah Butcher
Picornaviruses are the most commonly encountered infectious agents in mankind. They typically cause mild infections of the gastrointestinal or respiratory tract, but sometimes also invade the central nervous system. There, they can cause severe diseases with long-term sequelae and even be lethal. The most infamous picornavirus is poliovirus, for which significant epidemics of poliomyelitis were reported from the end of the nineteenth century. A successful vaccination campaign has brought poliovirus close to eradication, but neurological diseases caused by other picornaviruses have increasingly been reported since the late 1990s...
June 20, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28631484/ocular-pharmacokinetics-of-therapeutic-antibodies-given-by-intravitreal-injection-estimation-of-retinal-permeabilities-using-a-3-compartment-semi-mechanistic-model
#18
Laurence A Hutton-Smith, Eamonn A Gaffney, Helen M Byrne, Philip K Maini, Kapil Gadkar, Norman Alan Mazer
Intravitreally (IVT) injected macromolecules for the treatment of age-related macular degeneration must permeate through the inner limiting membrane (ILM) into the retina and through the retinal pigment epithelium (RPE) to enter the choroid. A quantitative understanding of intraocular transport mechanisms, elimination pathways and the effect of molecular size, is currently incomplete. We present a semi-mechanistic, 3-compartment (retina, vitreous and aqueous) pharmacokinetic (PK) model, expressed using linear ordinary differential equations (ODEs), to describe the molecular concentrations following a single IVT injection...
June 20, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28631318/bupropion-overdose-resulted-in-a-pharmacobezoar-in-a-fatal-bupropion-wellbutrin-%C3%A2-sustained-release-overdose-postmortem-distribution-of-bupropion-and-its-major-metabolites
#19
Gregory Schmit, Evy De Boosere, Jessica Vanhaebost, Arnaud Capron
Bupropion (BUP) overdose commonly causes generalized seizures and central nervous system depression. The case of a 28-year-old woman who died from a massive lethal overdose with sustained-release bupropion (Wellbutrin(®) 300 mg) is herein presented. The autopsy revealed the presence of a pharmacobezoar consisting of at least 40 tablets in the stomach. Determination of bupropion and its active metabolites (hydroxybupropion, threobupropion, erythrobupropion) was achieved by a liquid chromatographic mass spectrometry (LC-MS/MS) method...
June 20, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28629979/nasal-vaccination-with-poly-%C3%AE-amino-ester-poly-d-l-lactide-co-glycolide-hybrid-nanoparticles
#20
Genada Sinani, Melike Sessevmez, M Koray Gök, Saadet Özgümüş, Alper Okyar, H Oya Alpar, Erdal Cevher
Mucosal vaccination stimulates both mucosal and systemic immunity. However, mucosal applications of vaccine antigens in their free form generally result in poor systemic immune responses and need adjuvantation. In this study, bovine serum albumin loaded, new hybridised poly(β-amino ester)-poly(d,l-lactide-co-glycolide) nanoparticles were prepared by double emulsion-solvent evaporation method, characterised and evaluated in vivo as nasal vaccine carriers. Cationic spherical particles with a mean size of 240nm, good physical stability and high encapsulation efficiency were obtained...
June 16, 2017: International Journal of Pharmaceutics
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