Publications by authors named "Jonathan D Dear"

A student-run, free One Health clinic (OHC) improves access to care for people and pets while providing increased training opportunities for interprofessional students in the areas of spectrum of care, contextualized care, cultural humility, ethical community engagement, and relationship-centered communication when clinical instruction is provided. The coordination and implementation of a community-based student-run free clinic (SRFC) that is also an OHC is complex. Programmatic challenges can include coordination with the leaders of multiple training programs, seasonal variation of student and clinical instructor schedules, and the need to balance student experiential learning with positive client and patient outcomes.

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Sjogren's disease, well-described in people, is rarely identified in veterinary species. In people, Sjogren's disease is one of the most common systemic autoimmune disorders with an incidence of 0.5% in the female population.

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Background: Recurrent bacterial cystitis, often referred to as recurrent urinary tract infection (UTI), can be difficult to manage and alternative treatments are needed.

Hypothesis/objective: Intravesicular administration of asymptomatic bacteriuria (ASB) E. coli 212 will not be inferior to antimicrobial treatment for the management of recurrent UTI in dogs.

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Article Synopsis
  • Bacterial pneumonia in dogs and cats can occur as either an acute or chronic condition, leading to respiratory or systemic issues.
  • Aspiration pneumonia is common and can result from problems like vomiting, esophageal issues, or altered mental states.
  • Quickly identifying the cause and risk factors is crucial for veterinarians to create effective treatment plans and prevent future occurrences.
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species infect a very wide range of mammal hosts across the globe, and zoonotic infections are of growing concern. Several species of the genus infect dogs, and some of these cause significant morbidity and mortality. The Apicomplexan parasite resides within the red cell and infections result in direct damage to the host through intra- and extravascular hemolysis.

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Background: Polyautoimmunity is the expression of more than one autoimmune disease in a single patient. This report documents polyautoimmunity in a mixed breed dog with concurrent uveitis, cutaneous depigmentation, and inflammatory myopathy.

Case Presentation: A 1-year-old male neutered mixed breed dog was presented for progressive generalized leukotrichia and leukoderma, bilateral panuveitis, and masticatory muscle atrophy.

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A 10-year-old, female spayed Labrador Retriever was referred for acute hepatopathy and urinary retention. Blood work from the initial presentation (day 0) revealed a severe, mixed hepatopathy. Over the course of the patient's hospitalization, the patient developed liver insufficiency.

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Background: Awareness of prescribing practices helps identify opportunities to improve antibiotic use (AU).

Objectives: To estimate AU prevalence in dogs and cats in U.S.

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Background: The ability to detect bacteriuria in dogs with a point-of-care test might improve medical care and antimicrobial stewardship.

Hypothesis And Objective: A rapid immunoassay (RIA; RapidBac) will provide acceptable sensitivity and specificity for diagnosis of bacteriuria.

Animals: Forty-four client-owned dogs with a clinical indication for urinalysis and aerobic bacterial urine culture.

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Article Synopsis
  • The study investigates the prevalence of a disease-causing parasite found in coyotes, which can lead to hemolytic anemia and thrombocytopenia in domestic dogs.
  • Researchers collected 461 splenic samples from coyotes in California and found a 4.8% infection rate, with higher prevalence in certain areas and among rural coyotes.
  • The study suggests that coyotes may act as a reservoir for the parasites that can infect domestic dogs, indicating a need for further investigation.
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Babesia in North America: An Update.

Vet Clin North Am Small Anim Pract

November 2022

Canine babesiosis results from infection of 1 of 5 identified protozoal species in the United States (Babesia conradae, Babesia sp. "coco," Babesia gibsoni, Babesia vogeli, and Babesia vulpes). They are part of the Apicomplexa family of protozoa and are obligate intraerythrocytic parasites.

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Background: Isavuconazole is a triazole antifungal drug that has shown good efficacy in human patients. Absorption and pharmacokinetics have not been evaluated in cats.

Objectives: To determine the pharmacokinetics of isavuconazole in cats given a single IV or PO dose.

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Tularemia is a rare zoonotic disease found worldwide. The agent responsible for disease, , is one of the most highly infectious pathogens known, one that is capable of causing life-threatening illness with inhalation of <50 organisms. High infectivity explains concerns of its use in bioterrorism.

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Background: Clinical features, treatment, and outcome of opportunistic infections with Rasamsonia spp., a nonpigmented filamentous mold, are not well documented in dogs.

Objectives: Describe clinical, radiographic, pathologic features, and outcome of dogs with disseminated Rasamsonia species complex infections.

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Mental wellness is an important topic among practicing veterinarians. Peer reviewed studies focusing on veterinary house officers' wellbeing are lacking in veterinary medicine. The aim of this study was to assess wellbeing of house officers using validated surveys for anxiety, burnout, depression, and quality of life.

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Article Synopsis
  • Aspiration pneumonia (AP) and bronchopneumonia (BP) are diseases in cats that are not well understood, but they show similar symptoms to inflammatory airway disease (IAD).
  • A study involved 33 cats with AP, 26 with BP, and 44 with IAD to compare clinical and diagnostic features among these diseases.
  • Results indicated that cats with AP present differently (less cough, more hypothermia) and have a shorter duration of symptoms compared to cats with BP and IAD; also, specific bacteria were found in BP cases but not in AP cases.
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Veterinary pathology tissue banks are valuable resources for genetic studies. However, limited data exist as to whether quality DNA can be extracted from these tissues for use in canine genotyping studies. We extracted DNA from 44 formalin-fixed, paraffin-embedded (FFPE) tissue blocks from dogs; 9 of these dogs had DNA available from whole blood samples that had been banked.

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Bacterial Pneumonia in Dogs and Cats: An Update.

Vet Clin North Am Small Anim Pract

March 2020

Bacterial pneumonia is a common clinical diagnosis in dogs but seems to occur less often in cats. Underlying causes include viral infection, aspiration injury, foreign body inhalation, and defects in clearance of respiratory secretions. Identification of the specific organisms involved in disease, appropriate use of antibiotics and adjunct therapy, and control of risk factors for pneumonia improve management.

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Article Synopsis
  • - The study focuses on eosinophilic lung disease in dogs, highlighting its classification into three categories: eosinophilic bronchitis (EB), eosinophilic granuloma (EG), and eosinophilic bronchopneumopathy (EBP) through various diagnostic methods.
  • - A review of medical records from 75 dogs revealed differences in clinical signs and imaging results among the categories, with EB showing milder symptoms and lower eosinophil counts compared to EG and EBP.
  • - Findings indicate that dogs with eosinophilic lung disease have distinct diagnostic profiles, but there is a need for further research to understand treatment responses and improve clinical outcomes.
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Background: Struvite urolithiasis with bacterial urinary tract infection (UTI) is commonly reported in dogs; few data exist to describe successful dissolution protocols in dogs with naturally occurring disease. We hypothesized that a dry therapeutic urinary diet combined with targeted antimicrobial therapy can effectively dissolve presumptive struvite cystolithiasis in dogs with naturally occurring urease-producing bacterial UTI.

Results: Ten dogs with presumed infection-induced struvite cystolithiasis based on lower urinary tract signs (LUTS), radiodense cystoliths, and urease-producing bacterial UTI were enrolled.

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Background: Candida urinary tract infections occur in both dogs in cats but there is limited data about risk factors.

Objective: To identify risk factors for candiduria in dogs in cats.

Animals: Eighteen dogs and 8 cats with candiduria.

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Limited access to healthcare is a symptom of poverty worldwide. In Knights Landing, California, USA, an economically underserved, agricultural community, advocates recognized that integration of human and animal healthcare could provide a less intimidating gateway to services and facilitate assessments of individuals' health, not just in moments in time, but within the context of the complex interactions with other humans, animals, and their encompassing environment. Humans and animals share diseases resulting from common exposure to environmental pollutants and disease hosts and lack of adequate nutrition.

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Background: Babesia conradae is an intraerythrocytic piroplasm infecting dogs in the southern United States. Ticks have been suspected, but unproven, as vectors. We identified B.

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OBJECTIVE To describe and evaluate outcomes of a multidisciplinary, minimally invasive approach combining lacrimoscopy and fluoroscopically guided stenting for management of nasolacrimal apparatus (NLA) obstruction in dogs. DESIGN Prospective, nonrandomized clinical trial. ANIMALS 16 client-owned dogs with confirmed NLA obstruction.

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Bacterial pneumonia in dogs and cats.

Vet Clin North Am Small Anim Pract

January 2014

Bacterial pneumonia is a common clinical diagnosis in dogs but seems to occur less commonly in cats. Underlying causes include viral infection, aspiration injury, and foreign body inhalation. Identification of the organisms involved in disease, appropriate use of antibiotics and adjunct therapy, and control of risk factors for pneumonia improve management.

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