Targeted thoracic ultrasonography shows high diagnostic potential for interstitial pneumonia in feedyard cattle.

Objective: To use a novel approach of targeted thoracic point-of-care ultrasound (TT-POCUS) of the caudodorsal right lung to determine potential associations between TT-POCUS measurements and the presence of interstitial pneumonia (IP) in feedyard cattle.

Methods: Cross-sectional study evaluated feedyard animals (n = 62; 358.4 ± 10.

Directional microwave ablation in spine: experimental assessment of computational modeling.

Background: Despite the theoretical advantages of treating metastatic bone disease with microwave ablation (MWA), there are few reports characterizing microwave absorption and bioheat transfer in bone. This report describes a computational modeling-based approach to simulate directional microwave ablation (dMWA) in spine, supported by and pilot experiments in porcine vertebral bodies.

Materials And Methods: A 3D computational model of microwave ablation within porcine vertebral bodies was developed.

Limitation of amino acid availability by bacterial populations during enhanced colitis in IBD mouse model.

Inflammatory bowel disease is associated with an increase in Enterobacteriaceae and Enterococcus species; however, the specific mechanisms are unclear. Previous research has reported the associations between microbiota and inflammation, here we investigate potential pathways that specific bacteria populations use to drive gut inflammation. Richie et al.

The tumor microenvironment generated by Marek's disease virus suppresses interferon-gamma-producing gamma delta T cells.

The tumor microenvironment (TME) is generated by the cross-talk among tumor cells, immune system cells, and stromal cells. The TME generated by Marek's disease virus (MDV) is suggested to display an immunosuppressive milieu due to immune inhibitory molecules and cytokines which are possibly induced by MDV-transformed cells and regulatory T cells. Both anti-tumor and pro-tumor gamma delta (γδ) T cells are reported in human cancer.

Multifocal spinal inflammatory myofibroblastic tumors in a juvenile paraparetic dog.

A 1-year-old, female English Bulldog presented with a 10-day history of progressive paraparesis. Neuroanatomical localization was consistent with T3-L3 segment myelopathy. Magnetic resonance imaging (MRI) revealed a severely compressive, mildly contrast enhancing, extradural, dorsal, broad-based mass at the level of L3-4.

Investigating fecal microbial transplant as a novel therapy in dogs with inflammatory bowel disease: A preliminary study.

Background: There are limited studies investigating the use of fecal microbial transplant (FMT) in dogs with inflammatory bowel disease (IBD). The aim of this preliminary study was to assess the feasibility of adding FMT to standard therapy (corticosteroids and a hypoallergenic diet) for dogs with IBD and to and to describe the changes in measured outcomes after 30 days of treatment.

Methods: Thirteen client-owned dogs with IBD were enrolled in this double blinded, randomized clinical trial.

Primary Intestinal Lymphoma in Rabbits.

Neoplasms of the intestinal tract are uncommon in rabbits and primary lymphoma of the intestinal tract is rare. This case series is the first detailed description of primary intestinal lymphoma in rabbits. We reviewed four cases of primary intestinal lymphoma in rabbits aged 5-9.

Differential activation of chicken gamma delta T cells from different tissues by Toll-like receptor 3 or 21 ligands.

Gamma delta (γδ) T cells are highly enriched in mucosal barrier sites including intestinal tissues where microbial infections and tumors often originate in mammals. Human γδ T cells recognize stress antigens and microbial signals via their T cell receptor (TCR), natural killer (NK) receptors, and pattern recognition receptors. However, little is known about antigens or ligands capable of stimulating chicken γδ T cells.

Pax5 and CD3 immunophenotyping of lymphoma in 2 central bearded dragons.

Two central bearded dragons (), a 3-y-old male and a 5-y-old female, were diagnosed with different manifestations of lymphoma at the Kansas State Veterinary Diagnostic Laboratory between 2019 and 2020. The 3-y-old male was presented for postmortem evaluation and was in poor body condition. Microscopically, nearly all examined organs contained variable numbers of neoplastic round cells.

Phenotypic characterization of gamma delta (γδ) T cells in chickens infected with or vaccinated against Marek's disease virus.

Marek's disease (MD) vaccines reduce the incidence of MD but cannot control virus shedding. To develop new vaccines, it is essential to elucidate mechanisms of immunity to Marek's disease virus (MDV) infection. In this regard, gamma delta (γδ) T cells may play a significant role in prevention of viral spread and tumor surveillance.

Inoculation of Weaned Pigs by Feed, Water, and Airborne Transmission of Salmonella enterica Serotype 4,[5],12:i:

Abstract: Salmonella enterica serotype 4,[5],12:i:- (STM) has become an increasing problem for food safety and has been often detected in swine products. Weanling pigs were exposed to STM-contaminated feed, water, or air to determine possible STM transmission routes. A control group of pigs was included.

Detection of Subspecies (MAP) Microorganisms Using Antigenic MAP Cell Envelope Proteins.

Cell envelope proteins from subspecies (MAP) that are antigenically distinct from closely related mycobacterial species are potentially useful for Johne's Disease (JD) diagnosis. We evaluated the potential of ELISAs, based on six antigenically distinct recombinant MAP cell envelope proteins (SdhA, FadE25_2, FadE3_2, Mkl, DesA2, and hypothetical protein MAP1233) as well as an extract of MAP total cell envelope proteins, to detect antibodies against MAP in the sera of infected cattle. The sensitivity (Se) and specificity (Sp) of an ELISA based on MAP total cell envelope proteins, when analyzing 153 bovine serum samples, was 75 and 96%, respectively.

Strategic reconstruction of macrophage-derived extracellular vesicles as a magnetic resonance imaging contrast agent.

A contrast agent (CA) in magnetic resonance imaging (MRI) is now an essential add-on to obtain high-quality contrast-enhanced anatomical images for disease diagnosis and monitoring the treatment response. However, the rapid elimination of CAs by the immune system and excretion by the renal route has limited its application. As a result, the CA dose for effective contrast is ever-increasing, resulting in toxic side effects such as gadolinium (Gd) related nephrogenic systemic fibrosis (NSF) toxicity.

Periocular sarcoid with bone invasion in a Thoroughbred mare.

A periocular nodular sarcoid was diagnosed on the right upper eyelid and medial canthus of a 12-year-old Thoroughbred mare. Enucleation was performed and during the procedure the mass was noted to be firmly adhered to the underlying frontal bone. Partial ostectomy of the dorsal orbital rim was performed.

Alveolar echinococcosis in an Ontario dog resembling an hepatic abscess.

A boxer dog was evaluated because of lethargy, vomiting, and abdominal pain. Ultrasonography revealed multiple cystic structures in the abdomen. Exploratory laparotomy revealed 3 well-encapsulated hepatic masses and abdominal effusion with suppurative inflammation.

WC1 and WC1 γδ T lymphocytes in intestinal mucosa of healthy and Mycobacterium avium subspecies paratuberculosis-infected calves.

Mucosal surfaces such as the gastrointestinal tract, and skin are the front line of host defence and immunity against many pathogens. Gamma delta (γδ) T lymphocytes preferentially localize to the mucosal surfaces in several species including cattle, and are thought to play crucial roles in immunosurveillance and host defence, particularly against mycobacteria. Many γδ T cells are present in young calves, which is the period when calves are thought to be initially exposed to Mycobacterium avium subspecies paratuberculosis (Map).

Characterizaton of gamma delta T cells in Marek's disease virus (Gallid herpesvirus 2) infection of chickens.

Immunity against Marek's disease (MD), caused by Gallid herpesvirus 2 (GaHV-2), in chickens is mediated by both innate and adaptive responses. The present study evaluated the effects of GaHV-2 infection on distribution and frequency of γδ T cells in tissues, as well as their expression of cytokines. We found that the infected chickens had significantly higher number of γδ T cells in their spleens by 10 and 21 days post-infection (d.

Resilience to infection by Mycobacterium avium subspecies paratuberculosis following direct intestinal inoculation in calves.

Mycobacterium avium subspecies paratuberculosis (Map) is the cause of Johne's disease, a chronic enteritis of cattle. A significant knowledge gap is how persistence of Map within the intestinal tract after infection contributes to progression of disease. To address this, we exposed calves to Map by direct ileocecal Peyer's patch injection.

Cyclooxygenase-2 expression in the eyes of cats with and without uveitis.

OBJECTIVE To characterize the distribution and intensity of cyclooxygenase (COX)-2 expression in the eyes of cats with and without uveitis and to determine whether COX-2 expression is correlated with severity of inflammation. SAMPLES Archived ocular tissue specimens from 51 cats with and 10 cats without ocular disease. PROCEDURES Specimens from only 1 eye were evaluated for each cat.

Bovine WC1 and WC1 γδ T Lymphocytes Influence Monocyte Differentiation and Monocyte-Derived Dendritic Cell Maturation during Subspecies Infection.

During early subspecies () infection, complex interactions occur between the bacteria, cells from the mononuclear phagocyte system (MPS) including both resident (macrophages and dendritic cells) and recruited (monocytes) cells, and other mucosal sentinel cells such as γδ T lymphocytes. Though the details of early host-pathogen interactions in cattle remain largely underexplored, our hypothesis is that these significantly influence development of host immunity and ultimate success or failure of the host to respond to infection. The aims of the present study were to first characterize monocyte-derived MPS cells from young calves with respect to their immunophenotype and function.

Bovine peripheral blood WC1 and WC1 γδ T lymphocytes modulate monocyte-derived macrophage effector functions during in vitro Mycobacterium avium subspecies paratuberculosis infection.

The importance of bovine γδ T lymphocytes during anti-mycobacterial immunity is recognized; however, the role of major subsets of γδ T lymphocytes (WC1 and WC1) in this process remains unclear. We investigated how WC1 and WC1 γδ T lymphocyte subsets of calves modulate monocyte-derived macrophage (MDM) functions during Map infection in vitro. To achieve this, Map-infected or uninfected MDMs from young calves were co-cultured with autologous WC1 or WC1 γδ T lymphocytes.

Bovine WC1(+) γδ T lymphocytes modify monocyte-derived macrophage responses during early Mycobacterium avium subspecies paratuberculosis infection.

Following Mycobacterium avium subspecies paratuberculosis (Map) infection, some calves are apparently able to successfully clear the pathogen whereas others become persistently infected; however the reasons for this remain unknown. The importance of innate immunity, and in particular the role of γδ T lymphocytes, during early anti-mycobacterial immune response is recognized but specific mechanisms remain incompletely characterized. The objective of this study was to investigate how bovine WC1(+) γδ T lymphocytes mediate macrophage function during early Map infection.

Chronic liver lobe torsion in a cat.

A 13 yr old castrated male blue British shorthair with a 3 mo history of vomiting was diagnosed with a left lateral liver lobe mass following abdominal ultrasonography. At the time of celiotomy, liver lobe torsion (LLT) of the left lateral lobe was also present. Histopathologic evaluation of the liver mass and associated lobe revealed extensive necrosis secondary to chronic torsion.