1,812 results match your criteria: "School of Veterinary Medicine and Science[Affiliation]"

Genomic and Phenotypic Analysis of Bacteriophages Identifies Two Novel Phage Species.

Microorganisms

March 2024

Canadian Research Institute for Food Safety, Department of Food Science, University of Guelph, Guelph, ON N1G 2W1, Canada.

Bacteriophages (phages) are potential alternatives to chemical antimicrobials against pathogens of public health significance. Understanding the diversity and host specificity of phages is important for developing effective phage biocontrol approaches. Here, we assessed the host range, morphology, and genetic diversity of eight phages isolated from a wastewater treatment plant.

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  • * A review of 22 studies indicated that while some EVs can promote a T helper type 2 (Th2) response linked to allergic reactions, others may support a Th1 or regulatory T cell (Treg) response, showcasing their complex role.
  • * EVs contribute to allergic sensitization by increasing pro-Th2 cytokines, but they can also induce tolerance, suggesting a dual function in the immune response toward allergens; more research is essential for understanding their impact in humans.
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Barley (Hordeum vulgare) is an important global cereal crop and a model in genetic studies. Despite advances in characterising barley genomic resources, few mutant studies have identified genes controlling root architecture and anatomy, which plays a critical role in capturing soil resources. Our phenotypic screening of a TILLING mutant collection identified line TM5992 exhibiting a short-root phenotype compared with wild-type (WT) Morex background.

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Granuloprival cerebellar cortical degeneration in a Yorkshire Terrier and Lagotto Romagnolo dog.

J Vet Intern Med

July 2024

Clínica Veterinaria Levante, Avenida de La Unión 61, San Javier, Murcia 30730, Spain.

Granuloprival degeneration is an uncommon form of cerebellar cortical degeneration (CCD). A 3-month-old Yorkshire Terrier and a 7-month-old Lagotto Romagnolo dog were presented with a history of progressive cerebellar dysfunction including wide-based stance, cerebellar ataxia, intention tremors, and loss of menace response despite normal vision. Magnetic resonance imaging of the brain identified marked diffuse decrease of the cerebellum size.

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Identifying associations between phenotype and genotype is the fundamental basis of genetic analyses. Inspired by frequentist probability and the work of R.A.

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Canine urothelial carcinoma (UC) and prostate carcinoma (PC) frequently exhibit the BRAF mutation, akin to the BRAF mutation common in various human cancers. Since the initial discovery of the BRAF mutation in canine cancers in 2015, PCR has been the standard method for its detection in both liquid and tissue biopsies. Considering the similarity between the canine BRAF and human BRAF mutations, we hypothesized that immunohistochemistry (IHC) using a BRAF-specific antibody could effectively identify the canine mutant BRAF protein.

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Play behaviour can act as an indicator of positive animal welfare. Previous attempts to predict play behaviour in farmed calves are limited because of the classification methods used, which lead to overestimation, and the short time periods that calves are observed. The study aimed to automatically classify and quantify play behaviour in farmed calves using location data from ultra-wide band sensors and to investigate factors associated with play behaviour.

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  • The study aims to enhance antimicrobial stewardship (AMS) by understanding the barriers veterinary surgeons face in changing antimicrobial prescribing practices.
  • Through interviews and discussions in Northern Ireland, key barriers were identified, including commercial constraints, farmer behaviors, multiple sources of medicines, and inadequate regulatory actions.
  • The study suggests that improving AMS will require behavioral changes from both vets and farmers, with a call for greater state involvement in regulating medicine sales and fostering better communication about flock health.
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Ocrelizumab B cell depletion has no effect on HERV RNA expression in PBMC in MS patients.

Mult Scler Relat Disord

June 2024

Department of Neurology, Nottingham University Hospitals NHS Trust, Queens Medical Centre, Derby Road, Nottingham, United Kingdom; School of Medicine, University of Nottingham, University Park Campus, Nottingham, United Kingdom.

Background: Epstein barr virus (EBV) infection of B cells is now understood to be one of the triggering events for the development of Multiple Sclerosis (MS), a progressive immune-mediated disease of the central nervous system. EBV infection is also linked to expression of human endogenous retroviruses (HERVs) of the HERV-W group, a further risk factor for the development of MS. Ocrelizumab is a high-potency disease-modifying treatment (DMT) for MS, which depletes B cells by targeting CD20.

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Trx4, a novel thioredoxin protein, is important for Toxoplasma gondii fitness.

Parasit Vectors

April 2024

State Key Laboratory for Animal Disease Control and Prevention, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, Gansu Province, 730046, People's Republic of China.

Background: To successfully replicate within the host cell, Toxoplasma gondii employs several mechanisms to overcome the host cell defenses and mitigate the harmful effects of the free radicals resulting from its own metabolic processes using effectors such as thioredoxin proteins. In this study, we characterize the location and functions of a newly identified thioredoxin in T. gondii, which was named Trx4.

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Tilapia Lake Virus (TiLV) is associated with pathological changes in the brain of infected fish, but the mechanisms driving the virus's neuropathogenesis remain poorly characterized. TiLV establishes a persistent infection in the brain of infected fish even when the virus is no longer detectable in the peripheral organs, rendering therapeutic interventions and disease management challenging. Moreover, the persistence of the virus in the brain may pose a risk for viral reinfection and spread and contribute to ongoing tissue damage and neuroinflammatory processes.

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Article Synopsis
  • A systematic review and meta-analysis was conducted to assess the global prevalence of Toxoplasma gondii infection in wild birds, analyzing data from six major databases up to February 2023.
  • The study evaluated 659 articles, ultimately including 49 eligible studies involving 16,030 wild bird samples, with a pooled prevalence rate of 16.6% for T. gondii infection.
  • Factors such as the publication year (post-2020) and climate type were significantly associated with infection rates, highlighting the need for further research into various risk factors affecting T. gondii ecology in wild birds.
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Globally, farmers are being increasingly encouraged to use technologies. Consequently, veterinarians often use farm data and technologies to provide farmers with advice. Yet very few studies have sought to understand veterinarians' perceptions of data and technologies on farms.

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An In Silico and In Vitro Assessment of the Neurotoxicity of Mefloquine.

Biomedicines

February 2024

Clinical Toxicology Research Group, School of Medicine, Royal Derby Hospital Centre, University of Nottingham, Derby DE22 3DT, UK.

Mefloquine (MQ) is a quinoline-based anti-malarial drug used for chemoprophylaxis or as a treatment in combination with artesunate. Although MQ has clear anti- properties, it can induce neurotoxicity and undesired neuropsychiatric side effects in humans. Hence, this study aimed to characterize the neurotoxicity of MQ using human neuroblastoma SH-SY5Y cells.

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Porcine Monocyte DNA Traps Formed during Infection with Pathogenic Strains.

Pathogens

March 2024

Department of Veterinary and Animal Science, SRUC Aberdeen, Craibstone Campus, Aberdeen AB21 9YA, UK.

() is an enteric pathogen of several mammalian species including man, frequently involving nosocomial resurgence, following oral administration of broad-spectrum antibiotics, but also with human-to-human infection occurring, and neonatal pigs with zoonotic transmission. To date, the immune response to . has mostly focused on neutrophils and cytokine/chemokines, particularly in human infection.

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RNA, a dynamic and flexible molecule with intricate three-dimensional structures, has myriad functions in disease development. Traditional methods, such as X-ray crystallography and nuclear magnetic resonance, face limitations in capturing real-time, single-molecule dynamics crucial for understanding RNA function. This review explores the transformative potential of single-molecule force spectroscopy using optical tweezers, showcasing its capability to directly probe time-dependent structural rearrangements of individual RNA molecules.

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SnoRNAs in cardiovascular development, function, and disease.

Trends Mol Med

June 2024

Department of Musculoskeletal Ageing Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, L7 8TX, UK.

Small nucleolar RNAs (snoRNAs) are emerging as important regulators of cardiovascular (patho)biology. Several roles of snoRNAs have recently been identified in heart development and congenital heart diseases, as well as their dynamic regulation in hypertrophic and dilated cardiomyopathies, coronary heart disease (CHD), myocardial infarction (MI), cardiac fibrosis, and heart failure. Furthermore, reports of changes in vesicular snoRNA expression and altered levels of circulating snoRNAs in response to cardiac stress suggest that snoRNAs also function in cardiac signaling and intercellular communication.

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is a globally endemic and poorly controlled cause of bovine mastitis impacting the sustainability of the modern dairy industry. A core genome was derived from 579 newly sequenced isolates, along with 305 publicly available genome sequences of isolated from 11 countries around the world and used to develop a core genome multi-locus sequence typing (cgMLST) scheme. The core genome comprised 1475 genes, and these were used to identify 1447 curated loci that were indexed into the cgMLST scheme.

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The veterinary profession has been relatively understudied in social science, though recent work has highlighted the geographic dimensions of veterinary expertise. This paper draws on in-depth qualitative interviews with Named Veterinary Surgeons (NVSs) working in UK animal research to demonstrate how and why they distinguish between ethical aspects of veterinary work in the spaces of the laboratory and general clinical practice. The paper mobilises the sociological concept of ethical boundary-work to help understand how animal research - often assumed to represent a contentious ethical space - is constructed positively as a space for veterinary work.

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For successful development and adoption of technology on dairy farms, farmers need to be included in the innovation process. However, the design of agricultural technologies usually takes a top-down approach with little involvement of end-users at the early stages. Living Labs offer a methodology that involve end-users throughout the development process and emphasize the importance of understanding users' needs.

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Lacustrine sediment quality indicates the effects of both natural and anthropogenic activities on the ecosystem and communities. Despite its ecological importance, myriad complexities, and potential contaminant sources, the spatial distribution of surficial sediments in Lake Victoria's Winam Gulf has never been comprehensively documented. The purpose of this study was to assess the spatial distribution, pathways, and ecological risk of metal elements in the lake using a sediment matrix.

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Ensuring high standards of animal welfare is not only an ethical duty for zoos and aquariums, but it is also essential to achieve their conservation, education, and research goals. While for some species, animal welfare assessment frameworks are already in place, little has been done for marine animals under human care. Responding to this demand, the welfare committee of the European Association for Aquatic Mammals (EAAM) set up a group of experts on welfare science, cetacean biology, and zoo animal medicine across Europe.

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Insulin-like peptide 3 (INSL3) is a constitutive product of mature, adult-type Leydig cells of the testes and consequently in most mammals is an ideal biomarker with which to monitor pubertal development. A new heterologous time-resolved fluorescence immunoassay was developed and validated to measure circulating INSL3 in the blood of adult male dogs. Compared to other species, INSL3 concentration is low with marked variation between individuals, which appears to be independent of breed, age, or weight.

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Article Synopsis
  • Outcome measures in veterinary physiotherapy, especially for dogs and horses, are not consistently evaluated or standardized, leading to uncertainty in their implementation.* -
  • A survey of 40 veterinary physiotherapists showed that those affiliated with professional organizations used outcome measures more effectively, but there was no significant difference in usage based on whether they had a background in human physiotherapy.* -
  • The study revealed a preference for subjective over objective outcome measures, pointing to the necessity for stronger resources to promote reliable tools like goniometers for better assessment in veterinary practice.*
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Background: Macrophages residing in milk are vital during intramammary infections. This study sought to develop a method enabling the investigation of macrophage responses to pathogens. Streptococcus uberis is the predominant cause of bovine mastitis UK-wide and its pathogenesis is unusual compared to other intramammary pathogens.

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