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https://www.readbyqxmd.com/read/28089546/expression-of-interleukin-6-by-a-recombinant-rabies-virus-enhances-its-immunogenicity-as-a-potential-vaccine
#1
Jun Luo, Boyue Zhang, Yuting Wu, Qin Tian, Jing Zhao, Ziyu Lyu, Qiong Zhang, Mingzhu Mei, Yongwen Luo, Xiaofeng Guo
Several studies have confirmed that interleukin-6 (IL6) mediates multiple biological effects that enhance immune responses when used as an adjuvant. In the present study, recombinant rabies virus (RABV) expressing canine IL6 (rHEP-CaIL6) was rescued and its pathogenicity and immunogenicity were investigated in mice. We demonstrated that mice received a single intramuscular immunization with rHEP-CaIL6 showed an earlier increase and higher maximum titres of virus-neutralizing antibody (VNA) as well as anti-RABV antibodies compared with mice immunized with the parent strain...
January 12, 2017: Vaccine
https://www.readbyqxmd.com/read/28089357/localization-of-toll-like-receptor-tlr-2-and-tlr4-mrna-in-the-colorectal-mucosa-of-miniature-dachshunds-with-inflammatory-colorectal-polyps
#2
N Yokoyama, H Ohta, J Yamazaki, Y Kagawa, O Ichii, N Khoirun, T Morita, T Osuga, S Y Lim, N Sasaki, K Morishita, K Nakamura, M Takiguchi
Inflammatory colorectal polyps (ICRPs) are characterized by the formation of multiple or solitary polyps with marked neutrophil infiltration in the colorectal area, and are speculated to be a novel form of breed-specific canine idiopathic inflammatory bowel disease (IBD). In human IBD, toll-like receptor (TLR) 2 and TLR4 have been reported to be involved in the pathogenesis of the disease. The aim of this study was to evaluate the expression of TLR2 and TLR4 mRNA in the colorectal mucosa of dogs with ICRPs by in-situ hybridization using an RNAscope assay...
January 12, 2017: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28060678/canine-central-nervous-system-neoplasm-phenotyping-using-tissue-microarray-technique
#3
I Spitzbarth, F Heinrich, V Herder, T Recker, P Wohlsein, W Baumgärtner
Tissue microarrays (TMAs) represent a useful technique for the simultaneous phenotyping of large sample numbers and are particularly suitable for histopathologic tumor research. In this study, TMAs were used to evaluate semiquantitatively the expression of multiple antigens in various canine central nervous system (CNS) neoplasms and to identify markers with potential discriminative diagnostic relevance. Ninety-seven canine CNS neoplasms, previously diagnosed on hematoxylin and eosin sections according to the World Health Organization classification, were investigated on TMAs, with each tumor consisting of 2 cylindrical samples from the center and the periphery of the neoplasm...
January 1, 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28056234/-effect-of-intracoronary-autologous-bone-marrow-mononuclear-cells-transplantation-on-arrhythmia-in-canines
#4
J Tang, G Y Sun, T Chen, Y D Wang, J Zhang, X Q Qi
Objective: To observe the survival and the differentiation of grafted bone marrow cells (BM-MNCs) in host myocardium. To observe whether BM-MNCs transplantation can potentially cause arrhythmia and whether the BM-MNCs transplantation can alter the spatial distribution of connexins, important mediator for arrhythmia genesis after myocardial infarction. Methods: Acute myocardial infarction (AMI) was induced by left anterior descending coronary artery (LAD) ligation in hybrid canine. BM-MNCs suspension was prepared by density centrifugation...
December 24, 2016: Zhonghua Xin Xue Guan Bing za Zhi
https://www.readbyqxmd.com/read/28040513/novel-chimeric-virus-like-particles-vaccine-displaying-mers-cov-receptor-binding-domain-induce-specific-humoral-and-cellular-immune-response-in-mice
#5
Chong Wang, Xuexing Zheng, Weiwei Gai, Gary Wong, Hualei Wang, Hongli Jin, Na Feng, Yongkun Zhao, Weijiao Zhang, Nan Li, Guoxing Zhao, Junfu Li, Jinghua Yan, Yuwei Gao, Guixue Hu, Songtao Yang, Xianzhu Xia
Middle East respiratory syndrome coronavirus (MERS-CoV) has continued spreading since its emergence in 2012 with a mortality rate of 35.6%, and is a potential pandemic threat. Prophylactics and therapies are urgently needed to address this public health problem. We report here the efficacy of a vaccine consisting of chimeric virus-like particles (VLP) expressing the receptor binding domain (RBD) of MERS-CoV. In this study, a fusion of the canine parvovirus (CPV) VP2 structural protein gene with the RBD of MERS-CoV can self-assemble into chimeric, spherical VLP (sVLP)...
December 28, 2016: Antiviral Research
https://www.readbyqxmd.com/read/28038672/erratum-to-a-pilot-study-of-toceranib-vinblastine-therapy-for-canine-transitional-cell-carcinoma
#6
Sarah B Rippy, Heather L Gardner, Sandra M Nguyen, Emma E Warry, Roberta F Portela, William Tod Drost, Eric T Hostnik, Eric M Green, Dennis J Chew, Juan Peng, Cheryl A London
No abstract text is available yet for this article.
December 30, 2016: BMC Veterinary Research
https://www.readbyqxmd.com/read/28013013/a-canine-model-of-chronic-graft-versus-host-disease
#7
Scott S Graves, Andrew Rezvani, George Sale, Diane Stone, Maura Parker, Steven Rosinski, Michele Spector, Bruce Swearingen, Leslie Kean, Rainer Storb
In long-term survivors of allogeneic hematopoietic cell transplantation (HCT), chronic graft-versus-host disease (GVHD) is the major cause of morbidity and mortality and a major determinant of quality of life. Chronic GVHD responds poorly to current immunosuppressive drugs, and while T cell depletion may be preventive, this gain is offset by increased relapse rates. A significant impediment to progress in treating chronic GVHD has been the limitations of existing animal models. The goal of this study was to develop a reproducible comprehensive model of chronic GVHD in the dog...
December 21, 2016: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28011041/establishment-of-a-patient-derived-xenograft-of-canine-enteropathy-associated-t-cell-lymphoma-large-cell-type
#8
K S Im, J H Kim, A J Graef, I Cornax, D M Seelig, M G O'Sullivan, R C Kovi, J F Modiano
The pathogenesis of canine T-cell lymphoma remains incompletely understood, partly because there are no well-established in-vivo models to study these malignancies. For this study, we generated a patient-derived tumour xenograft (PDTX) from a 10-year-old neutered male golden retriever dog with enteropathy-associated intestinal T-cell lymphoma, large cell type. One of two female, 15-week-old beige/nude/XID mice developed a visible tumour 7 weeks after sections of tumour material from the spleen were surgically implanted...
December 20, 2016: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/28008682/homozygous-ppt1-splice-donor-mutation-in-a-cane-corso-dog-with-neuronal-ceroid-lipofuscinosis
#9
A Kolicheski, H L Barnes Heller, S Arnold, R D Schnabel, J F Taylor, C A Knox, T Mhlanga-Mutangadura, D P O'Brien, G S Johnson, J Dreyfus, M L Katz
A 10-month-old spayed female Cane Corso dog was evaluated after a 2-month history of progressive blindness, ataxia, and lethargy. Neurologic examination abnormalities indicated a multifocal lesion with primarily cerebral and cerebellar signs. Clinical worsening resulted in humane euthanasia. On necropsy, there was marked astrogliosis throughout white matter tracts of the cerebrum, most prominently in the corpus callosum. In the cerebral cortex and midbrain, most neurons contained large amounts of autofluorescent storage material in the perinuclear area of the cells...
December 23, 2016: Journal of Veterinary Internal Medicine
https://www.readbyqxmd.com/read/27966823/oxytocin-receptors-in-dioestrous-and-anoestrous-canine-uteri
#10
T M Tamminen, L Sahlin, B Masironi, J Taponen, O Laitinen-Vapaavuori, T Katila
The aim of the study was to localize oxytocin receptors (OTR) and measure mRNA expression of OTR in the canine uterus with and without the influence of progesterone. Uterine samples were taken from nine anoestrous and eight dioestrous bitches during ovariohysterectomy. Histological changes were evaluated in haematoxylin and eosin (HE)-stained samples. Purified polyclonal antibody for OTR was used in immunohistochemistry to localize receptors in uterine layers. Relative mRNA concentration of OTR was evaluated with real-time PCR from full-thickness uterine samples taken from the middle horn and the body...
December 14, 2016: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/27938709/effects-of-etoposide-alone-and-in-combination-with-piroxicam-on-canine-osteosarcoma-cell-lines
#11
S M Ong, K Saeki, Y Tanaka, R Nishimura, T Nakagawa
Osteosarcoma (OSA) is the most common primary bone tumour in dogs. The poor survival rate in dogs with OSA highlights the need for new therapeutic approaches. This study evaluated the cytotoxic effects of etoposide, alone and in combination with piroxicam, on canine OSA cell cultures. Etoposide alone significantly suppressed cell growth and viability, whereas etoposide in combination with piroxicam exhibited concentration dependent cytotoxicity. The anti-proliferative effect was a result of inactivity of the Cdc2-cyclin B1 complex, which correlated with an increase in the G2/M fraction...
December 2016: Veterinary Journal
https://www.readbyqxmd.com/read/27938705/antibody-profiling-of-canine-igg-responses-to-the-ospc-protein-of-the-lyme-disease-spirochetes-supports-a-multivalent-approach-in-vaccine-and-diagnostic-assay-development
#12
Lee D Oliver, Christopher G Earnhart, DeLacy Virginia-Rhodes, Michael Theisen, Richard T Marconi
OspC performs essential functions during the enzootic cycle of the Lyme disease (LD) spirochetes. In this study, the specificity of antibody (Ab) responses to OspC was profiled to define the antigenic determinants during infection and after vaccination. Several OspC variants or 'types' were screened with serum from SNAP4Dx C6 positive dogs and with serum from rabbits hyperimmunized with OspC proteins. The OspC type-specific nature of the Ab response revealed that variable domains of OspC are immunodominant during infection and upon vaccination...
December 2016: Veterinary Journal
https://www.readbyqxmd.com/read/27923479/immune-cell-infiltration-in-feline-meningioma
#13
R McBride, E A Sloma, H N Erb, A D Miller
Meningioma is the most common primary brain tumour in the cat. Although most of these tumours are considered to be benign based on histological characteristics, little is known regarding microenvironmental changes associated with the tumour. The characterization of the immune-cell infiltrate in human and canine meningiomas has been described; however, there are no data regarding the cat equivalent. Seventeen formalin-fixed, paraffin wax-embedded samples of feline meningioma were evaluated by light microscopy and immunohistochemistry (IHC) for expression of CD3, Pax5, Iba-1, HLA-DR, MAC387, CD163 and Ki67...
December 3, 2016: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/27900781/the-present-and-future-of-opioid-analgesics-in-small-animal-practice
#14
REVIEW
B T Simon, P V Steagall
Opioids are the cornerstone for the treatment of acute pain in small animal patients. This is primarily because of their remarkable safety profile, high efficacy, and benefit of reversibility. There have been some significant advances in our knowledge on opioid pharmacology and clinical usage in companion animal medicine. This review discusses the progression of opioid use in small animal practice providing current misconceptions and controversies in light of routes of administration. Potential targets for research and drug development and novel therapies are discussed in addition to the concepts of glial cell modulators, individual variability, and opioid tolerance and hyperalgesia...
November 30, 2016: Journal of Veterinary Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/27893789/characterization-of-the-canine-mhc-class-i-dla-88-50101-peptide-binding-motif-as-a-prerequisite-for-canine-t-cell-immunotherapy
#15
Sharon M Barth, Christian M Schreitmüller, Franziska Proehl, Kathrin Oehl, Leonie M Lumpp, Daniel J Kowalewski, Moreno Di Marco, Theo Sturm, Linus Backert, Heiko Schuster, Stefan Stevanović, Hans-Georg Rammensee, Oliver Planz
There are limitations in pre-clinical settings using mice as a basis for clinical development in humans. In cancer, similarities exist between humans and dogs; thus, the dog patient can be a link in the transition from laboratory research on mouse models to clinical trials in humans. Knowledge of the peptides presented on MHC molecules is fundamental for the development of highly specific T cell-based immunotherapies. This information is available for human MHC molecules but is absent for the canine MHC. In the present study, we characterized the binding motif of dog leukocyte antigen (DLA) class I allele DLA-88*50101, using human C1R and K562 transfected cells expressing the DLA-88*50101 heavy chain...
2016: PloS One
https://www.readbyqxmd.com/read/27891564/a-homozygous-pign-missense-mutation-in-soft-coated-wheaten-terriers-with-a-canine-paroxysmal-dyskinesia
#16
Ana L Kolicheski, Gary S Johnson, Tendai Mhlanga-Mutangadura, Jeremy F Taylor, Robert D Schnabel, Taroh Kinoshita, Yoshiko Murakami, Dennis P O'Brien
Hereditary paroxysmal dyskinesias (PxD) are a heterogeneous group of movement disorders classified by frequency, duration, and triggers of the episodes. A young-adult onset canine PxD has segregated as an autosomal recessive trait in Soft-Coated Wheaten Terriers. The medical records and videos of episodes from 25 affected dogs were reviewed. The episodes of hyperkinesia and dystonia lasted from several minutes to several hours and could occur as often as >10/day. They were not associated with strenuous exercise or fasting but were sometimes triggered by excitement...
November 28, 2016: Neurogenetics
https://www.readbyqxmd.com/read/27890077/t-lymphocyte-immunophenotypes-in-the-cerebrospinal-fluid-of-dogs-with-visceral-leishmaniasis
#17
Fernanda G Grano, José Eduardo Dos S Silva, Guilherme D Melo, Juliana Perosso, Valéria M F Lima, Gisele F Machado
Visceral leishmaniasis (VL) is a disease causing several clinical manifestations in dogs, including neurological disorders. Nevertheless, there are few studies related to the evaluation of the brain alterations during VL. Evidences of the involvement of cerebral barriers in infected dogs was reported, including the presence of brain inflammatory infiltrate, with a predominance of CD3+ T cells. Therefore, the aim of this study was to determine the immunophenotypes of T lymphocytes in the cerebrospinal fluid (CSF), as well as in peripheral blood, and to correlate with brain alterations in dogs with VL...
December 15, 2016: Veterinary Parasitology
https://www.readbyqxmd.com/read/27889201/expression-of-fibroblast-activating-protein-and-correlation-with-histological-grade-mitotic-index-and-ki67-expression-in-canine-mast-cell-tumours
#18
A Giuliano, R Dos Santos Horta, F Constantino-Casas, T Hoather, J Dobson
Fibroblast activating protein (FAP) is a membrane serine protease expressed by activated fibroblasts, particularly tumour associated fibroblasts (TAFs). FAP expression has not been reported in canine mast cell tumours (MCTs). The objective of this study was to evaluate the expression of FAP in TAFs and its correlation with histological grade, mitotic index and Ki67 expression in canine MCTs. FAP expression was evaluated by immunohistochemistry (IHC) in 30 canine MCTs. Twenty-eight (90%) of the MCTs expressed FAP in the stroma, 16 cases showed low to intermediate FAP score and 14 cases had a high FAP score...
November 24, 2016: Journal of Comparative Pathology
https://www.readbyqxmd.com/read/27881051/mechanisms-of-immune-suppression-utilized-by-canine-adipose-and-bone-marrow-derived-mesenchymal-stem-cells
#19
Lyndah Chow, Valerie Johnson, Jonathan W Coy, Daniel P Regan, Steven W Dow
Mesenchymal stem cells (MSC) from rodents and humans have been shown to suppress T cells by distinct primary pathways, with NO-dependent pathways dominating in rodents and IDO-dependent pathways dominating in humans. However, the immune suppressive pathways utilized by canine MSC have not been as thoroughly studied, nor have BM-MSC and Ad-MSC been directly compared for their immune modulatory potency or pathway utilization. Therefore, canine BM-MSC and Ad-MSC were generated in vitro and their potency in suppressing T cell proliferation and cytokine production was compared, as well as differential gene expression...
November 23, 2016: Stem Cells and Development
https://www.readbyqxmd.com/read/27863558/development-of-an-autologous-canine-cancer-vaccine-system-for-resectable-malignant-tumors-in-dogs
#20
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
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