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Dog otitis

Simona Nardoni, Luisa Pistelli, Ilenia Baronti, Basma Najar, Francesca Pisseri, Rose Vanessa Bandeira Reidel, Roberto Papini, Stefania Perrucci, Francesca Mancianti
Several plants extracts from Mediterranean countries are traditionally employed in skin troubles both in humans and in animals. Malassezia pachydermatis is a lipophylic yeast responsible for otitis externa and dermatitis in dogs and for cutaneous and systemic disease in humans. Five mixtures of essential oils obtained from Mediterranean plants (Citrus paradisi, Salvia sclarea, Ocimum basilicum, Rosmarinus officinalis, Citrus limon, Anthemis nobilis, Lavandula hybrida and Thymus vulgaris) provided with antifungal and/or anti-inflammatory action assayed in vitro, were tested in vivo versus M...
December 5, 2016: Natural Product Research
Gila Zur, Bella Gurevich, Daniel Elad
BACKGROUND: Antimicrobial resistance within bacteria continues to present therapeutic challenges. One presumed risk factor for increased rates of resistance is prior exposure to antimicrobial drugs. OBJECTIVES: To examine the impact of time since most recent exposure, the number of prior antimicrobial exposures and duration of use on antimicrobial resistance rates in Staphylococcus pseudintermedius isolates. METHODS: Inclusion of a case in the study required laboratory isolation of S...
December 2016: Veterinary Dermatology
J Classen, A Bruehschwein, A Meyer-Lindenberg, R S Mueller
Ultrasound imaging (US) of the tympanic bulla (TB) for diagnosis of canine otitis media (OM) is less expensive and less invasive than cross-sectional imaging techniques including computed tomography (CT) and magnetic resonance imaging (MRI). Video otoscopy (VO) is used to clean inflamed ears. The objective of this study was to investigate the diagnostic value of US and VO in OM using cross-sectional imaging as the reference standard. Client owned dogs with clinical signs of OE and/or OM were recruited for the study...
November 2016: Veterinary Journal
Darja Kušar, Karin Šrimpf, Petra Isaković, Lina Kalšek, Javid Hosseini, Irena Zdovc, Tina Kotnik, Modest Vengušt, Gabrijela Tavčar-Kalcher
BACKGROUND: Bacterial intercellular communication, called quorum sensing, takes place via the production and collective response to signal molecules. In Gram-negative bacteria, like Pseudomonas aeruginosa, these signaling molecules are N-acylhomoserine lactones (AHLs). P. aeruginosa is a common cause of inflammation of the ear canal (otitis externa) in dogs. It employs quorum sensing to coordinate the expression of host tissue-damaging factors, which are largely responsible for its virulence...
October 18, 2016: BMC Veterinary Research
Conor Rowan, Laura Cuddy, Jill Bryan, Robert Shiel, Séamus Hoey
A 5-year-old female entire German Shepherd presented for otitis and lethargy. An incidental abdominal mass was identified on examination. Ultrasound examination (US) identified a heterogeneous left ovarian mass. Computed tomography (CT) was performed for surgical planning and staging. The reproductive tract was removed en bloc and submitted for histopathology. Multiple small (1-5 mm) nodules identified at coeliotomy on the surface of the liver, spleen and peritoneum were biopsied. The lesions were not visible on CT nor US on review...
October 13, 2016: Veterinary Radiology & Ultrasound
Giovanni Ghibaudo, Davide Santospirito, Andrea Sala, Sara Flisi, Simone Taddei, Sandro Cavirani, Clotilde Silvia Cabassi
BACKGROUND: Pseudomonas aeruginosa (PA) may cause suppurative otitis externa with severe inflammation and ulceration in dogs. Multidrug resistance is commonly reported for this organism, creating a difficult therapeutic challenge. OBJECTIVE: The aim of this study was to evaluate the in vitro antimicrobial activity of a gel containing 0.5 μg/mL of antimicrobial peptide AMP2041, 0.07% chlorhexidine digluconate (CLX), 0.4% Tris and 0.1% EDTA on 30 clinical isolates of PA from canine otitis externa...
October 2016: Veterinary Dermatology
Zuzana Sihelská, Peter Váczi, Eva Conková
Malassezia (M.) pachydermatis is the lipophilic yeast, which is normally present on the skin and in the ear canal of dogs but under certain conditions it may cause dermatitis and otitis. There is less known about the occurrence of lipid-dependent Malassezia species in dogs. The aim of this study was to detect whether lipid-dependent yeasts are part of the normal microflora in dogs. Two groups of animals were selected for comparison. The group of healthy dogs contained samples of 118 individuals and the group of dogs with cutaneous lesions or otitis externa comprised 328 dogs...
July 2016: Berliner und Münchener Tierärztliche Wochenschrift
Sandeep Tiwari, Syed Babar Jamal, Leticia Castro Oliveira, Dominique Clermont, Chantal Bizet, Diego Mariano, Paulo Vinicius Sanches Daltro de Carvalho, Flavia Souza, Felipe Luiz Pereira, Siomar de Castro Soares, Luis C Guimarães, Fernanda Dorella, Alex Carvalho, Carlos Leal, Debmalya Barh, Henrique Figueiredo, Syed Shah Hassan, Vasco Azevedo, Artur Silva
In this work, we describe a set of features of Corynebacterium auriscanis CIP 106629 and details of the draft genome sequence and annotation. The genome comprises a 2.5-Mbp-long single circular genome with 1,797 protein-coding genes, 5 rRNA, 50 tRNA, and 403 pseudogenes, with a G+C content of 58.50%.
2016: Genome Announcements
Daniel O Morris, Meghan F Davis, Brian S Palmeiro, Kathleen O'Shea, Shelley C Rankin
BACKGROUND: Pseudomonas aeruginosa is an opportunistic pathogen of the canine ear canal and occupies aquatic habitats in the environment. Nosocomial and zoonotic transmission of P. aeruginosa have been documented, including clonal outbreaks. HYPOTHESIS/OBJECTIVES: The primary objective of this study was to assess various environmental exposures as potential risk factors for canine Pseudomonas otitis. It was hypothesized that isolates derived from infected ears would be clonal to isolates derived from household water sources and the mouths of human and animal companions of the study subjects...
July 18, 2016: Veterinary Dermatology
Kristin A Coleman, Daniel D Smeak
OBJECTIVE: To determine whether perioperative complication rates are different between unilateral (ULS) versus single-stage bilateral (BLSS) total ear canal ablation-lateral bulla osteotomy (TECA-LBO) surgeries. STUDY DESIGN: Retrospective case series. ANIMALS: Fifity-seven dogs (79 ears) undergoing TECA-LBO at a single institution over 14 years. METHODS: Medical records of dogs undergoing TECA-LBO for end-stage inflammatory non-neoplastic ear disease from March 1999 to September 2013 at the Colorado State University Veterinary Teaching Hospital were evaluated for intraoperative and early postoperative complications associated with the procedure...
July 2016: Veterinary Surgery: VS
Elizabeth A Layne, Douglas J DeBoer
Immediate-type hypersensitivity (ITH), mediated by IgE, to Malassezia pachydermatis is recognized in atopic dogs with recurrent yeast dermatitis and otitis externa (OE). Malassezia-associated OE commonly occurs in dogs without other signs of atopic dermatitis (AD). The aim of this study was to detect Malassezia-specific IgE in the sera of dogs with recurrent Malassezia OE without concurrent skin disease. Sera from healthy dogs were used for comparison. An FcεRIα-based ELISA was used to measure Malassezia-specific IgE...
August 2016: Veterinary Immunology and Immunopathology
Laura Puig, Gemma Castellá, F Javier Cabañes
Malassezia pachydermatis is part of the normal cutaneous microbiota of wild and domestic carnivores. However, under certain conditions this yeast can overproliferate and cause several diseases in its host, mainly otitis and dermatitis in dogs. The aim of this study was to conduct a molecular characterization of M. pachydermatis isolates from healthy and diseased domestic animals, in order to assess the molecular diversity and phylogenetic relationship within this species. The large subunit (LSU) and the internal transcribed spacer (ITS) of ribosomal RNA, chitin synthase 2 (CHS2) and β-tubulin genes from sixteen strains isolated from dogs, cats, a goat, a pig and a horse were sequenced...
October 2016: Mycopathologia
Jessica C Pritchard, Megan E Jacob, Todd J Ward, Cameron T Parsons, Sophia Kathariou, Michael W Wood
An 11-year-old, male castrated, Boston Terrier was presented to the North Carolina State University College of Veterinary Medicine Small Animal Emergency Service with a 2-day history of progressive ataxia, left-sided head tilt, and anorexia. The dog had previously been diagnosed with chronic lymphoid leukemia and suspected immune-mediated destruction of his bone marrow precursor cells, possibly due to therapy with immunosuppressive dosages of prednisone and azathioprine. During the physical examination, abnormal findings included an increased body temperature and horizontal nystagmus...
June 2016: Veterinary Clinical Pathology
Chandni Merchant, Daphne-Dominique Villanueva, Ishan Lalani, Margaret Eng, Yong Kang
Staphylococcus schleiferi subsp. schleiferi is a coagulase-negative Staphylococcus which has been described as a pathogen responsible for various nosocomial infections including bacteremia, brain abscess, and infection of intravenous pacemakers. Recently, such bacteria have been described to be found typically on skin and mucosal surfaces. It is also believed to be a part of the preaxillary human flora and more frequently found in men. It is very similar in its pathogenicity with Staphylococcus aureus group and expresses a fibronectin binding protein...
2016: Case Reports in Infectious Diseases
M Ananda Chitra, C Jayanthy, B Nagarajan
BACKGROUND: Staphylococcus pseudintermedius (SP) is the major pathogenic species of dogs involved in a wide variety of skin and soft tissue infections. The accessory gene regulator (agr) locus of Staphylococcus aureus has been extensively studied, and it influences the expression of many virulence genes. It encodes a two-component signal transduction system that leads to down-regulation of surface proteins and up-regulation of secreted proteins during in vitro growth of S. aureus. The objective of this study was to detect and sequence analyzing the AgrA, B, and D of SP isolated from canine skin infections...
July 2015: Veterinary World
Sharon E Grayzel, Emilio E DeBess
OBJECTIVE: To characterize the demographics, exposure risks, and outcomes for dogs with leptospirosis in Oregon between 2007 and 2011 and to identify geographic and temporal distributions of known cases of canine leptospirosis within the state during this period. DESIGN: Retrospective descriptive epidemiological study. ANIMALS: 72 dogs. PROCEDURES: Reports of laboratory tests for leptospirosis and zoonosis reporting forms voluntarily submitted by veterinarians to the Oregon Health Authority were evaluated to identify dogs with leptospirosis during the study period; data were also collected by examination of medical records or by telephone surveys with veterinarians from reporting facilities...
April 15, 2016: Journal of the American Veterinary Medical Association
Catriona MacPhail
Ear disease, such as otitis externa, resulting in aggressive head shaking or ear scratching, is the most common cause of the development of aural hematomas in dogs and cats. An underlying immunologic cause has also been proposed to explain cartilage and blood vessel fragility. Numerous options exist for management of aural hematomas, from medical management alone with corticosteroids, to simple hematoma centesis, to surgical intervention. Because this condition is usually secondary to another disease process, regardless of mode of treatment, likelihood of recurrence is low if the underlying condition is managed properly...
July 2016: Veterinary Clinics of North America. Small Animal Practice
(no author information available yet)
No abstract text is available yet for this article.
March 12, 2016: Veterinary Record
Emi Maruhashi, Berta São Braz, Telmo Nunes, Constança Pomba, Adriana Belas, José Henrique Duarte-Correia, Ana Mafalda Lourenço
BACKGROUND: The high prevalence of antimicrobial resistance within otic pathogens has created a need for alternative therapies of otitis externa (OE). Evidence suggests that medical grade honey (MGH) may be effective against drug-resistant pathogens. HYPOTHESIS/OBJECTIVES: The efficacy of a commercial MGH compound was assessed in an open clinical trial. We hypothesized that it would be an effective alternative to conventional treatments. ANIMALS: Client-owned dogs (n = 15) with a confirmed diagnosis of infectious OE were enrolled in this pilot study...
April 2016: Veterinary Dermatology
A Hicks, D Golland, J Heller, R Malik, M Combs
OBJECTIVE: To characterise disease presentations caused by grass seed foreign body-related disease (GSFBD) in dogs, identify predisposing risk factors and suggest effective prevention strategies. METHODS: A retrospective, case-control, telephone survey was conducted to obtain information on GSFBD in dogs from the Riverina district of New South Wales (NSW). Additionally, retrospective case records were obtained from Wagga Wagga Veterinary Hospital and Charles Sturt University Veterinary Teaching Hospital over the period July 2006 to October 2011...
March 2016: Australian Veterinary Journal
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