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Veterinary Immunology and Immunopathology

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https://www.readbyqxmd.com/read/29776615/a-new-and-efficient-culture-method-for-porcine-bone-marrow-derived-m1-and-m2-polarized-macrophages
#1
Jiye Gao, Maaike R Scheenstra, Albert van Dijk, Edwin J A Veldhuizen, Henk P Haagsman
BACKGROUND: Macrophages play an important role in the innate immune system as part of the mononuclear phagocyte system (MPS). They have a pro-inflammatory signature (M1-polarized macrophages) or anti-inflammatory signature (M2-polarized macrophages) based on expression of surface receptors and secretion of cytokines. However, very little is known about the culture of macrophages from pigs and more specific about the M1 and M2 polarization in vitro. METHODS: Porcine monocytes or mononuclear bone marrow cells were used to culture M1- and M2-polarized macrophages in the presence of GM-CSF and M-CSF, respectively...
June 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29776614/characterisation-of-peripheral-blood-mononuclear-cell-populations-in-periparturient-dairy-cows-that-develop-metritis
#2
John J Bromfield, Meghan M Watt, Sossi M Iacovides
Bacterial contamination of the uterus following calving is ubiquitous in the dairy cow, 40% of cows develop postpartum uterine infection, including metritis. While predisposing factors like twinning and dystocia are associated with metritis, it is unclear why some cows remain healthy following calving and others develop uterine infection, negatively impacting animal health, milk production and economic return. Here, we profiled peripheral blood mononuclear cells of cows before calving and during postpartum metritis...
June 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29776613/high-resolution-melting-analysis-hrm-for-the-assessment-of-clonality-in-feline-b-cell-lymphomas
#3
Manfred Henrich, Svenja Scheffold, Werner Hecht, Manfred Reinacher
Analysis of clonality is gaining importance in diagnosing lymphomas in veterinary medicine. Usually, PCR for the analysis of antigen receptor rearrangement (PARR) is followed by electrophoretic separation of the PCR products. Aim of this study was to test the feasibility of HRM for the assessment of clonality in B-cell lymphomas of cats. High resolution melting analysis differentiates PCR products by their different melting point using the decrease in fluorescence of an intercalating dye during melting of the PCR product...
June 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29776612/immunohistochemical-investigation-of-the-cross-reactivity-of-selected-cell-markers-in-formalin-fixed-paraffin-embedded-lymphoid-tissues-of-franciscana-pontoporia-blainvillei
#4
J Díaz-Delgado, R Ressio, K R Groch, J L Catão-Dias
A considerable amount of knowledge on natural and anthropogenic pathologic conditions affecting different cetacean species has been gained over the last decades. Nonetheless, the immunopathological bases for most of these processes have been poorly documented or remain unknown. Comparative immunopathological investigations in these species are precluded by the limited number of specific antibodies, most of which are not commercially available, and the reduced spectrum of validated and/or cross-reactive ones...
June 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29776611/nasal-delivery-of-chitosan-alginate-nanoparticle-encapsulated-bee-apis-mellifera-venom-promotes-antibody-production-and-viral-clearance-during-porcine-reproductive-and-respiratory-syndrome-virus-infection-by-modulating-t-cell-related-responses
#5
Jina Lee, Yun-Mi Kim, Ju-Heon Kim, Cheong-Weon Cho, Jong-Woon Jeon, Jin-Kyu Park, Sang-Ho Lee, Bock-Gie Jung, Bong-Joo Lee
In this study, we administered specially developed chitosan/alginate nanoparticle encapsulated BV (CH/AL-BV) which has slow-releasing properties and mucosal adhesiveness to pig via nasal route and evaluate whether it can facilitate systemic immune response and improve clearance of porcine reproductive and respiratory syndrome virus (PRRSV). The CH/AL-BV-administered group with PRRSV vaccination showed significantly enhanced Th1-related responses including a high population of CD4+ T lymphocyte and cytokine mRNA levels including interferon-gamma (IFN-γ) and interleukin (IL)-12 and increased PRRSV-specific IgG levels...
June 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29776610/comparative-evaluation-of-immune-responses-of-swine-in-prrs-stable-and-unstable-herds
#6
Michele Drigo, Enrico Giacomini, Massimiliano Lazzaro, Daniela Pasotto, Dania Bilato, Jessica Ruggeri, Maria Beatrice Boniotti, Giovani Loris Alborali, Massimo Amadori
Porcine Reproductive and Respiratory Syndrome (PRRS) is an elusive model of host/virus relationship in which disease is determined by virus pathogenicity, pig breed susceptibility and phenotype, microbial infectious pressure and environmental conditions. Successful disease control in PRRS-endemic Countries corresponds to "stability", i.e. a condition with no clinical signs of PRRS in the breeding-herd population and no viremia in weaning-age pigs. The aim of this work was to compare the profile and time-course of humoral and cell-mediated immunity in stable and unstable herds, respectively...
June 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29776609/threshold-level-of-riemerella-anatipestifer-crossing-blood-brain-barrier-and-expression-profiles-of-immune-related-proteins-in-blood-and-brain-tissue-from-infected-ducks
#7
Shengdou Li, Xiaowei Gong, Qiwei Chen, Fuying Zheng, Guo Ji, Yongsheng Liu
Riemerella anatipestifer (R. anatipestifer) is a Gram-negative bacterium that crosses the blood-brain barrier (BBB) and causes meningitis with neurological symptoms in infected ducks. A threshold level of bacteremia must be reached before the BBB can be breached. In this study, the bacterial burden and expression profiles of immune-related proteins in blood and brain tissue samples from R. anatipestifer-infected ducks were investigated. The data showed that R. anatipestifer could cross the BBB with low-level bacteremia of 7...
June 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29776608/development-of-a-polyclonal-anti-dugong-immunoglobulin-g-igg-antibody-with-evaluation-of-total-plasma-igg-in-a-living-dugong-dugong-dugon-population
#8
Arthur Wong, Janet M Lanyon, Sara J McKee, Richard Linedale, Lucy Woolford, Trevor Long, Graham R Leggatt
Species-specific antibodies (Ab) for the measurement of immunoglobulins (Ig) are valuable tools for determining the humoral immune status of threatened and endangered wildlife species such as dugongs. However, no studies have reported antibody reagents against dugong immunoglobulin. The object of this study was to develop an Ab with specificity for dugong IgG and apply this tool to survey total IgG levels in plasma samples from a live wild population of dugongs in southern Queensland, Australia. Dugong IgG was isolated from plasma by protein A/G column chromatography and a polyclonal antiserum was successfully raised against the dugong IgG through immunization of mice...
June 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29776607/differentiation-of-equine-bone-marrow-derived-mesenchymal-stem-cells-increases-the-expression-of-immunogenic-genes
#9
Laura Barrachina, Ana Rosa Remacha, Antonio Romero, Pilar Zaragoza, Francisco José Vázquez, Clementina Rodellar
Mesenchymal stem cells (MSCs) are a promising treatment for equine musculoskeletal injuries because of their ability to regulate the inflammation and to differentiate into other cell types. Since interest in allogeneic therapy is rising, concerns about MSC immunogenicity need to be addressed. Differentiated MSCs from several species increase their expression of immunogenic molecules and induce alloresponses, but equine MSC immunogenic profile after differentiation has not been reported. Therefore, the aim of this study was to assess the gene expression of immunogenic markers in tri-lineage differentiated equine bone marrow derived MSCs (eBM-MSCs)...
June 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29678234/antibodies-to-in-silico-selected-gpi-anchored-theileria-parva-proteins-neutralize-sporozoite-infection-in-vitro
#10
James Nyagwange, Vishvanath Nene, Stephen Mwalimu, Sonal Henson, Lucilla Steinaa, Benjamin Nzau, Edwin Tijhaar, Roger Pelle
East Coast fever (ECF) caused by Theileria parva kills cattle in East, Central and Southern Africa leading to significant economic losses. Vaccination is used as a control strategy against ECF and is presently dependent on deliberate infection with live sporozoites and simultaneous treatment with a long-acting oxytetracycline. Although effective, this method has serious limitations; the immunity is parasite strain specific and immunized cattle can become life-long asymptomatic carriers of the parasite, posing risk for the spread of the disease...
May 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29678233/selection-of-avibacterium-paragallinarum-page-serovar-b-strains-for-an-infectious-coryza-vaccine
#11
Huiling Sun, Sanlei Xie, Xiaofei Li, Fuzhou Xu, Yi Li, Charlotte E Boucher, Xiaoling Chen
Infectious coryza is an important respiratory disease of chickens around the world and is caused by Avibacterium paragallinarum. Among the three Page serovars currently recognized for this bacterium, serovar B is a major circulating serovar in China nowadays. The cross-protection ability of the Page serovar B reference strain (0222) and five local isolates was evaluated by a vaccination-challenge trial in SPF chickens. The clinical signs seen in control birds challenged by strain 0222 and isolate HB 01 were significantly different, with isolate HB 01 giving more severe clinical signs...
May 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29678232/type-i-and-type-ii-cytokine-production-of-cd4-t-cells-in-immune-response-biased-dairy-cattle-around-calving
#12
M A Paibomesai, S Sharif, N Karrow, B A Mallard
The peripartum period is a period of high stress, transition and management changes for dairy cows. It is associated with higher incidence of both metabolic and pathogenic disease. Both antibody-(AMIR) and cell-(CMIR) mediated immune responses play a key role in the maintenance of health in mammals protecting against extracellular and intracellular pathogens, respectively. Generally, interferon gamma (IFN-γ) has been associated with CMIR, whereas interleukin 4 (IL-4) has been associated with AMIR bias, and interleukin 17 (IL-17A) is associated with pro-inflammatory...
May 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29678231/incorporation-of-membrane-anchored-flagellin-into-salmonella-gallinarum-bacterial-ghosts-induces-early-immune-responses-and-protection-against-fowl-typhoid-in-young-layer-chickens
#13
Irshad Ahmed Hajam, Je Hyoung Kim, John Hwa Lee
The present study aimed to investigate whether the incorporation of flagellin, a TLR5 agonist, in the bacterial ghosts (BGs) of Salmonella Gallinarum can enhance protective immune responses against fowl typhoid, a septicemic disease of poultry, in chickens. BGs are empty cell envelopes derived from Gram-negative bacteria through the bacteriophage phiX174 gene E mediated lysis. In this study, the S. Gallinarum ghosts carrying flagellin were genetically constructed utilizing a lysis plasmid pJHL184-flagellin, designed for the coexpression of the flagellin and the lysis protein E...
May 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29678230/dynamic-distribution-of-formalin-inactivated-edwardsiella-tarda-in-olive-flounder-paralichthys-olivaceus-post-intramuscular-injection
#14
Chuili Zeng, Xiaoqian Tang, Yang Du, Xiuzhen Sheng, Jing Xing, Wenbin Zhan
Intramuscular (i.m.) injection is one of the common delivery methods of vaccination in aquaculture, which could induce an ideal immune protection to fish. In the present study, the olive flounders (Paralichthys olivaceus) were injected intramuscularly with 200 μl of three concentrations of formalin-inactivated Edwardsiella tarda bacterin (107 , 108 , 109 CFU ml-1 ) to investigate the transportation and dynamic distribution of antigen uptake in tissues by absolute real-time quantitative PCR (qPCR). The amount of uptaken antigen increased firstly, and then decreased...
May 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29678229/the-use-of-serological-tests-in-combination-with-the-intradermal-tuberculin-test-maximizes-the-detection-of-tuberculosis-infected-goats
#15
Javier Bezos, Álvaro Roy, José Antonio Infantes-Lorenzo, Isabel González, Ángel Venteo, Beatriz Romero, Anna Grau, Olga Mínguez, Lucas Domínguez, Lucía de Juan
The diagnosis of tuberculosis (TB) in goats is based mainly on the single and comparative intradermal tuberculin (SIT and CIT) tests and, exceptionally, on the interferon-gamma (IFN-γ) assay, however they are not perfect in terms of sensitivity and specificity. Nevertheless, various serological assays that provide a potential cost-effective approach for the control of TB are also available or under development, and a variety of results have been reported regarding the ability of these tests to detect infected animals, particularly in the early stages of infection...
May 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29678228/analyzing-complement-activity-in-the-serum-and-body-homogenates-of-different-fish-species-using-rabbit-and-sheep-red-blood-cells
#16
Sagar Nayak, Isabel Portugal, Dina Zilberg
Alternative complement activity was determined in whole body homogenates (WBHs) and serum samples of different fish species, by measuring the amount of sample that induces 50% hemolysis of red blood cells using the ACH50 assay (Alternative Complement pathway Hemolytic activity). Values of ACH50 obtained for serum samples were about two-fold higher when using rabbit red blood cells (RRBC), as compared to sheep red blood cells (SRBC). The increase in ACH50 when using RRBCs for WBH samples was 28, 7 and 4 folds for guppy, molly and zebrafish, respectively...
May 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29678227/humoral-and-cell-mediated-immune-responses-to-influenza-vaccination-in-equine-metabolic-syndrome-ems-horses
#17
Sarah Elzinga, Stephanie Reedy, Virginia D Barker, Thomas M Chambers, Amanda A Adams
Obesity is an increasing problem in the equine population with recent reports indicating that the percentage of overweight horses may range anywhere from 20.6-51%. Obesity in horses has been linked to more serious health concerns such as equine metabolic syndrome (EMS). EMS is a serious problem in the equine industry given its defining characteristics of insulin dysregualtion and obesity, as well as the involvement of laminitis. Little research however has been conducted to determine the effects of EMS on routine healthcare of these horses, in particular how they respond to vaccination...
May 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29678226/multispectral-fluorescence-activated-cell-sorting-of-b-and-t-cell-subpopulations-from-equine-peripheral-blood
#18
Joy E Tomlinson, Bettina Wagner, M Julia B Felippe, Gerlinde R Van de Walle
Immune phenotyping of equine peripheral blood mononuclear cells (PBMC) is commonly described by single or double marker labeling, which limits complex phenotypic descriptions and subpopulation identification. Our objective was to develop a new multispectral flow cytometry protocol to identify and sort equine lymphocyte subpopulations using commercially available, pre-conjugated monoclonal antibodies to cell surface markers. Two clones of anti-equine CD8 (CVS8 and CVS21) were compared in combination with CD3...
May 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29678225/synergistic-effect-of-co-stimulation-of-membrane-and-endosomal-tlrs-on-chicken-innate-immune-responses
#19
Sungwon Kim, Pete Kaiser, Dominika Borowska, Lonneke Vervelde
Toll-like receptor (TLR) ligands (TLR-Ls) are critical activators of immunity and are successfully being developed as vaccine adjuvants in both mammals and birds. In this study, we investigated the synergistic effect of co-stimulation of membrane and endosomal TLRs on the innate immune responses using chicken bone marrow-derived macrophages (BMMs), and studied the effect of age on the induction of innate responses. BMMs from 1 and 4-week-old birds were stimulated with Pam3Cys-SK4 (PCSK; TLR2), synthetic monophosphoryl lipid A (MPLA), Di[3-deoxy-d-manno-octulosonyl]-lipid A ammonium salt (KLA; TLR4), Gardiquimod, Resiquimod (R848; TLR7), CpG class B and C (TLR21)...
May 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29678224/evaluation-of-the-mucosal-inflammatory-responses-to-equine-cyathostomins-in-response-to-anthelmintic-treatment
#20
A E Steuer, A T Loynachan, M K Nielsen
Members of Cyathostominae are pervasive parasites of equids that can cause larval cyathostominosis, a potentially life-threatening disease that occurs when a multitude of encysted larvae synchronously excyst from the wall of the large intestine. Moxidectin and fenbendazole are the two current labeled drugs that target the encysted larval stages; however, there is limited knowledge of the local inflammatory response to the larvae and to the two treatments in clinically healthy horses. This study is the first to evaluate the local inflammatory response to cyathostomin larvae and to larvicidal treatment at 2 and 5 weeks post treatment...
May 2018: Veterinary Immunology and Immunopathology
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