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Veterinary Immunology and Immunopathology

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https://www.readbyqxmd.com/read/28063479/positive-immunomodulatory-effects-of-heterologous-dna-vaccine-modified-live-vaccine-prime-boost-immunization-against-the-highly-pathogenic-prrsv-infection
#1
Chaitawat Sirisereewan, Teerawut Nedumpun, Sawang Kesdangsakonwut, Yonlayong Woonwong, Roongtham Kedkovid, Jirapat Arunorat, Roongroje Thanawongnuwech, Sanipa Suradhat
Porcine reproductive and respiratory syndrome virus (PRRSV) infection is one of the most important swine pathogens, and causes a major economic impact worldwide. Recently, a new variant type 2 PRRSV, highly pathogenic PRRSV (HP-PRRSV) has emerged and continued to circulate in Southeast Asia region. Currently, commercially available PRRSV vaccines, modified live PRRS vaccines (MLV) are not able to provide complete protection against HP-PRRSV and been reported to induce negative immunomodulatory effects. Interestingly, a novel DNA vaccine was developed and successfully used to improve PRRSV-specific immune responses following MLV vaccination...
January 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28063478/developmental-expression-of-b-cell-molecules-in-equine-lymphoid-tissues
#2
J M B Prieto, R L Tallmadge, M J B Felippe
Identification and classification of B cell subpopulations has been shown to be challenging and inconsistent among different species. Our study tested aspects of ontogeny, phenotype, tissue distribution, and function of equine CD5(hi) B cells, which represented a greater proportion of B cells early in development and in the peritoneal cavity. CD5(hi) and CD5(lo) B cells differentially expressed B cell markers (CD2, CD21, IgM) measured using flow cytometry, but similar mRNA expression of signature genes (DGKA, FGL2, PAX5, IGHM, IL10) measured using quantitative RT-PCR...
January 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28063477/evaluation-of-serum-cytokines-in-cats-with-and-without-degenerative-joint-disease-and-associated-pain
#3
Margaret E Gruen, Kristen M Messenger, Andrea E Thomson, Emily H Griffith, Lauren A Aldrich, Shelly Vaden, B Duncan X Lascelles
Degenerative joint disease is common in cats, with signs of pain frequently found on orthopedic examination and radiographs often showing evidence of disease. However, understanding of the pathophysiology of degenerative joint disease and associated pain remains limited. Several cytokines have been identified as having a role in pain in humans, but this has not been investigated in cats. The present study was performed to use a multiplex platform to evaluate the concentration of 19 cytokines and chemokines in serum samples obtained from cats with and without degenerative joint disease and associated pain...
January 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28063476/short-communication-immunohistochemical-localization-of-the-immune-cell-marker-cd68-in-bovine-adipose-tissue-impact-of-tissue-alterations-and-excessive-fat-accumulation-in-dairy-cows
#4
S Häussler, D Germeroth, L Laubenthal, L F Ruda, J Rehage, S Dänicke, H Sauerwein
With the onset of lactation energy from feed intake is mostly insufficient to meet the requirements of dairy cows. Lipid mobilization from adipose tissue (AT) could lead to a compromised inflammatory response enhancing the incidence for diseases. In addition, tissue alterations can occur, displaying areas of necrosis and inflammation. Furthermore, over-conditioned cows mobilizing more lipids from AT than thin cows are prone to develop metabolic disorders. This might lead to an increased infiltration of phagocytic immune cells into AT...
January 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28063475/characterisation-of-monoclonal-antibodies-specific-for-hamster-leukocyte-differentiation-molecules
#5
Jennifer Rees, David Haig, Victoria Mack, William C Davis
Flow cytometry was used to identify mAbs that recognize conserved epitopes on hamster leukocyte differentiation molecules (hLDM) and also to characterize mAbs developed against hLDM. Initial screening of mAbs developed against LDMs in other species yielded mAbs specific for the major histocompatibility (MHC) II molecule, CD4 and CD18. Screening of sets of mAbs developed against hLDM yielded 22 new mAbs, including additional mAbs to MHC II molecules and mAbs that recognize LDMs expressed on all leukocytes, granulocytes, all lymphocytes, all T cells, a subset of T cells, or on all B cells...
January 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28063474/porcine-gpx1-enhances-gp5-based-dna-vaccination-against-porcine-reproductive-and-respiratory-syndrome-virus
#6
Luping Du, Bin Li, Fengjiao Pang, Zhengyu Yu, Xiangwei Xu, Baochao Fan, Yeping Tan, Kongwang He, Kehe Huang
Porcine reproductive and respiratory syndrome virus (PRRSV) has been causing huge economic losses to the swine industry worldwide. Commercial PRRSV vaccines including killed and modified live ones are available. However the protective efficacy of these vaccines is incomplete. Thus, it is in urgent need to develop safer and more effective PRRSV vaccines. In this study, we constructed a recombinant plasmid co-expressing porcine glutathione peroxidase-1 (GPX1) and the envelope glycoprotein (GP5) encoding-gene of PRRSV (pcDNA3...
January 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28063473/transfer-of-maternal-immunity-to-piglets-is-involved-in-early-protection-against-mycoplasma-hyosynoviae-infection
#7
K Tølbøll Lauritsen, T Hagedorn-Olsen, G Jungersen, U Riber, H Stryhn, N F Friis, P Lind, B Kristensen
Mycoplasma hyosynoviae causes arthritis in pigs older than 12 weeks. The role of colostrum in protection of piglets against M. hyosynoviae infection is not clear. Our objective was therefore to investigate whether transfer of maternal immunity to piglets was involved in early protection against the infection. Experimental infections were carried out in three groups of weaners receiving different levels of M. hyosynoviae-specific colostrum components; Group NC derived from Mycoplasma free sows and possessed no specific immunity to M...
January 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28063472/the-effect-of-free-and-carrier-bound-cortisol-on-equine-neutrophil-function
#8
Melanie A Fratto, Kelsey A Hart, Natalie A Norton, Michelle H Barton, Steeve Giguère, David J Hurley
Cortisol is a key anti-inflammatory hormone that increases in bacterial sepsis and circulates predominantly bound to cortisol binding globulin (CBG). Only unbound cortisol was believed to be biologically active, but recent evidence suggests that CBG-bound cortisol also regulates inflammation. The objective of this study was to evaluate the effects of free and CBG-bound cortisol on equine neutrophil function ex vivo. We hypothesized that CBG would enhance cortisol-mediated suppression of neutrophil pro-inflammatory responses...
January 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/28063471/comparison-of-assays-for-the-detection-of-west-nile-virus-antibodies-in-equine-serum-after-natural-infection-or-vaccination
#9
REVIEW
Kinga Joó, Tamás Bakonyi, Ottó Szenci, Sára Sárdi, Emőke Ferenczi, Mónika Barna, Péter Malik, Zdenek Hubalek, Orsolya Fehér, Orsolya Kutasi
West Nile virus (WNV) mainly infects birds, horses and humans. Outcomes of the infection range from mild uncharacteristic signs to fatal neurologic disease. The main objectives of the present study were to measure serum IgG and IgM antibodies in naturally exposed and vaccinated horses and to compare results of haemagglutination inhibition test (HIT), enzyme-linked immunosorbent assay (ELISA) and plaque reduction neutralisation test (PRNT). Altogether 224 animals were tested by HIT for WNV antibodies and 41 horses were simultaneously examined by ELISA and PRNT...
January 2017: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/27863558/development-of-an-autologous-canine-cancer-vaccine-system-for-resectable-malignant-tumors-in-dogs
#10
J R Yannelli, R Wouda, T J Masterson, M G Avdiushko, D A Cohen
While conventional therapies exist for canine cancer, immunotherapies need to be further explored and applied to the canine setting. We have developed an autologous cancer vaccine (K9-ACV), which is available for all dogs with resectable disease. K9-ACV was evaluated for safety and immunogenicity for a variety of cancer types in a cohort of companion dogs under veterinary care. The autologous vaccine was prepared by enzymatic digestion of solid tumor biopsies. The resultant single cell suspensions were then UV-irradiated resulting in immunogenic cell death of the tumor cells...
December 2016: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/27863557/in-vitro-assessment-of-the-effects-of-temperature-on-phagocytosis-reactive-oxygen-species-production-and-apoptosis-in-bovine-polymorphonuclear-cells
#11
Cristina Lecchi, Nicola Rota, Andrea Vitali, Fabrizio Ceciliani, Nicola Lacetera
Heat stress exerts a direct negative effect on farm animal health, triggering physiological responses. Environmental high temperature induces immunosuppression in dairy cows, increasing the risk of mastitis and milk somatic cell counts. The influence of heat stress on leukocytes activities has not been fully elucidated. The present in vitro study was aimed at assessing whether the exposure to temperature simulating conditions of severe whole body hyperthermia affects defensive functions of bovine blood polymorphonuclear cells...
December 2016: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/27863556/oral-vaccination-of-cattle-with-heat-inactivated-mycobacterium-bovis-does-not-compromise-bovine-tb-diagnostic-tests
#12
Gareth J Jones, Sabine Steinbach, Iker A Sevilla, Joseba M Garrido, Ramon Juste, H Martin Vordermeier
In this study we investigated whether oral uptake of a heat inactivated M. bovis wildlife vaccine by domestic cattle induced systemic immune responses that compromised the use of tuberculin or defined antigens in diagnostic tests for bovine TB. Positive skin test and blood-based IFN-γ release assay (IGRA) results were observed in all calves vaccinated via the parenteral route (i.e. intramuscular). In contrast, no positive responses to tuberculin or defined antigens were observed in either the skin test or IGRA test when performed in calves vaccinated via the oral route...
December 2016: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/27863555/test-performance-of-three-serological-assays-for-the-detection-of-mycobacterium-bovis-infection-in-common-warthogs-phacochoerus-africanus
#13
Eduard O Roos, Peter Buss, Lin-Mari de Klerk-Lorist, Jennie Hewlett, Guy A Hausler, Leana Rossouw, Alicia J McCall, David Cooper, Paul D van Helden, Sven D C Parsons, Michele A Miller
Sporadic cases of bovine tuberculosis (bTB) have been reported in warthogs in Southern Africa and confirmed through mycobacterial culture. However, there are no validated ante-mortem tests currently available for bTB in warthogs. In this study, we evaluated the use of three serological assays for the detection of Mycobacterium bovis infection in warthogs; an indirect enzyme-linked immunosorbent assay (ELISA) using bovine purified protein derivative (PPDb) as a capture antigen (indirect PPD ELISA), as well as two commercial assays, the TB ELISA-VK(®) and DPP(®) VetTB Assay...
December 2016: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/27863554/acute-phase-protein-haptoglobin-as-inflammatory-marker-in-serum-and-synovial-fluid-in-an-equine-model-of-arthritis
#14
Laura Barrachina, Ana Rosa Remacha, Lourdes Soler, Natalia García, Antonio Romero, Francisco José Vázquez, Arantza Vitoria, María Ángeles Álava, Fermín Lamprave, Clementina Rodellar
Acute phase proteins are useful inflammatory markers in horses. Haptoglobin (Hp) serum level is increased in horses undergoing different inflammatory processes, including arthritis. However, Hp concentration has not been assessed in inflammatory synovial fluid (SF). The aim of the present study was to investigate the Hp response in serum and SF in horses undergoing experimentally induced arthritis. For this purpose, serum and SF samples were collected from 12 animals before amphotericin B-induced arthritis was created (T0, healthy) and 15days after the lesion induction (T1, joint inflammation) and Hp was determined by single radial immunodiffusion...
December 2016: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/27863553/a-comparison-of-serum-and-plasma-cytokine-values-using-a-multiplexed-assay-in-cats
#15
Margaret E Gruen, Kristen M Messenger, Andrea E Thomson, Emily H Griffith, Hayley Paradise, Shelly Vaden, B D X Lascelles
BACKGROUND: Degenerative joint disease (DJD) is highly prevalent in cats, and pain contributes to morbidity. In humans, alterations of cytokine concentrations have been associated with joint deterioration and pain. Similar changes have not been investigated in cats. Cytokine concentrations can be measured using multiplex technology with small samples of serum or plasma, however, serum and plasma are not interchangeable for most bioassays. Correlations for cytokine concentrations between serum and plasma have not been evaluated in cats...
December 2016: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/27863552/generation-of-potent-porcine-monocyte-derived-dendritic-cells-modcs-by-modified-culture-protocol
#16
Teerawut Nedumpun, Patcharee Ritprajak, Sanipa Suradhat
In vitro derivation of dendritic cells (DCs) is an alternative approach to overcome the low frequency of primary DCs and the difficulty of isolation techniques for studying DC immunobiology. To date, the conventional culture protocol of porcine monocyte-derived DCs (MoDCs) has been widely used. However, this protocol is not practical due to the requirement of a substantial number of blood monocytes, and the process often interferes with DC maturation. To improve in vitro porcine MoDC generation, we modified the previous conventional DC generation protocol, based on the human and mouse primary DC culture system, and compared phenotypic and functional features of MoDCs derived from the modified protocol to the conventional protocol...
December 2016: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/27863551/in-vitro-cow-uterine-response-to-escherichia-coli-leukotrienes-and-cytokines
#17
A J Korzekwa, M Łupicka, B M- Socha, A A Szczepańska, E Piotrowicz, W Barański
The aim was to determine the dynamic profile of interactions between Escherichia coli (E. coli) and the actions of leukotrienes (LTs) and TNF and INFγ (cytokines) in the uterus in vitro. Uterine explants (N=6) were incubated for 2, 12 and 24h either as E. coli-treated (10(6)CFU) or non-treated and/or with: LTB4 and C4 (10(-6)M, for both LTs), LTs receptors antagonists (aLTR; 10(-6)M) and/or cytokines (each 10ng/ml). Toll Like Receptor 4 (TLR4) mRNA expression increased in explants incubated with E. coli, cytokines and LTs after 2 and 12h and aLTR inhibited the effect of LTs in explants incubated with E...
December 2016: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/27863550/cc-chemokine-ligand-2-and-cxc-chemokine-ligand-8-as-neutrophil-chemoattractant-factors-in-canine-idiopathic-polyarthritis
#18
Kohei Murakami, Shingo Maeda, Tomohiro Yonezawa, Naoaki Matsuki
Canine idiopathic polyarthritis (IPA) is characterized by increased numbers of polymorphonuclear leukocytes (PMNs) in the synovial fluid (SF). In humans, CC chemokine ligand 2 (CCL2) and CXC chemokine ligand 8 (CXCL8) recruit monocytes and neutrophils, respectively, and are involved in various inflammatory disorders. The aim of this study was to assess the roles of these chemokines in driving PMNs infiltration into the joints of dogs with IPA. SF samples were collected from dogs with IPA (n=19) and healthy controls (n=8), and the concentrations of SF CCL2 and CXCL8 were determined by ELISA...
December 2016: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/27863549/cytokine-and-chemokine-profiles-of-aqueous-humor-and-serum-in-horses-with-uveitis-measured-using-multiplex-bead-immunoassay-analysis
#19
Elizabeth Curto, Kristen M Messenger, Jacklyn H Salmon, Brian C Gilger
OBJECTIVE: To determine whether horses with clinically diagnosed Equine Recurrent Uveitis (ERU) and those with Leptospirosis infection have a specific cytokine profile in their aqueous humor (AH) and serum that differs from horses with uveitis secondary to other ocular inflammatory processes and from horses with normal eyes. ANIMALS STUDIED: Twenty-five client-owned horses with uveitis that were presented to the North Carolina State University Ophthalmology Service, and four University-owned horses without history or clinical signs of ocular disease...
December 2016: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/27863548/impact-of-in-vitro-treatments-of-physiological-levels-of-estradiol-and-progesterone-observed-in-pregnancy-on-bovine-monocyte-derived-dendritic-cell-differentiation-and-maturation
#20
Brianna Pomeroy, Suzanne Klaessig, Ynte Schukken
The specific factors which regulate differentiation and maturation of dendritic cells in bovine pregnancy remain unclear. We evaluated the influence of physiologically relevant in vitro treatments of progesterone (PG) and estradiol (E2) observed in late pregnancy on the differentiation and maturation of CD14+ monocyte-derived dendritic cell (moDC) from non-pregnant, lactating dairy cows (n=7). We found that moDC differentiated in the presence of both E2 and PG had impaired E. coli-induced phenotypic maturation, specifically a significant reduction in CD80 and MHC II expression...
December 2016: Veterinary Immunology and Immunopathology
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