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Acta sci. vet. (Impr.) ; 50(supl.1): Pub. 794, 2022. ilus
Artigo em Português | VETINDEX | ID: biblio-1401204


Background: Eye neoplasms are infrequent in felines and usually affect the eyelids. Squamous cell carcinoma (SCC) is a neoplasm that occurs owing to recurrent lesions caused by solar radiation and affects the margins of the ears, eyelids, nose and lips of animals with light-colored coat. The clinical signs consist of ulcerated, crusty lesions that may form masses. The diagnosis is established by means of histopathological analysis, and the prognosis depends on the area affected and tumor infiltration. This work aimed to describe a case of SCC in the eyelid with invasion of the eye and its adnexa in a cat, highlighting clinical aspects and the importance of the anatomopathological examination. Case: A female mixed breed senile cat that had been rescued from the streets was brought in for examination. Dehydration and a low body condition score were observed at the general clinical examination. A physical inspection revealed the presence of an ulcerated periocular lesion on the eyelid; the right eye exhibited increased size and loss of definition of its internal structures. The presence of malodorous cerumen in the right ear canal, a tilted head, and walking in circles to the right were also noted. A dysplastic epithelium along with neutrophilic inflammation was observed at the cytopathological analysis. The treatment instituted consisted of administration of antibacterial and anti-inflammatory drugs, and cleaning of the ear. On the follow-up appointment, 2 days later, the patient's condition had worsened and in spite of the supportive therapy administered, the animal died. An anatomopathological study of the body identified, in addition to the alterations in the eyelid and the eye mentioned above, a traumatic lesion with perforation of the mandibular bone, and presence of a brownish content with caseous consistency in the right ear canal. After visualization of the microscopic alterations, the diagnosis established was squamous cell carcinoma of the eyelid with metastases in the optical nerve and choroid blood vessels. Discussion: Squamous cell carcinoma is one of the most common epithelial neoplasms in felines, and can occur in any region of the face; however, the eyelids and the eyes are less frequently affected, which confirms that the case reported here is uncommon. SCC has a higher incidence in female cats older than 10 years of age with light-colored coat and highly exposed to ultraviolet radiation. The case reported here exhibited these characteristics, as the patient had been rescued from the streets where exposition to sunlight is intense. The clinical presentation was consistent with that described in other works, with ulcerated crusty lesions on the eyelid and the nose. Vestibular syndrome, as inferred from the tilted head and circular gait (walking in circles to the right), could be explained by internal otitis, which was observed at necropsy. The cytological analysis of the eye lesion demonstrated the presence of a neutrophilic inflammatory process along with a dysplastic or immature squamous epithelium, which prompted for therapy using antimicrobial and anti-inflammatory drugs. The definitive diagnosis was established with basis on the histopathological analysis, which revealed a pattern of neoplastic cells arranged in clusters or strands connected to the epidermal surface, and the presence of "keratin pearls" consistent with SCC affecting not only the eyelid and the eye, but also invading the optical nerve and the choroid blood vessels. The prognosis was unfavorable owing to the advanced stage of the tumor and concomitant diseases. Even though the development of SCC in the eyelid is relatively common, the occurrence of metastasis in the eye adnexa is rare in felines. An anatomopathological study was required to establish the diagnosis of SCC as the patient's clinical history data were scarce.

Animais , Feminino , Gatos , Carcinoma de Células Escamosas/veterinária , Neoplasias Palpebrais/veterinária , Metástase Neoplásica
Braz. j. vet. res. anim. sci ; 50(4): 294-299, 2013.
Artigo em Português | VETINDEX | ID: vti-9372


Os ambientes hospitalares podem albergar micro-organismos patogênicos e oportunistas, capazes de infectar, particu- larmente, os indivíduos imunossuprimidos. O processo de limpeza e desinfecção assume importância capital para o controle de tais doenças. O presente trabalho avaliou a suscetibilidade de leveduras isoladas de superfícies de ambiente hospitalar veterinário frente a quatro desinfetantes/antissépticos comumente utilizados na rotina de desinfecção. O teste de microdiluição em caldo foi realizado com 24 isolados leveduriformes frente ao hipoclorito de sódio 4%, cloreto de benzalcônico 2%, clorexidina-cetrimida 6,6% e derivado de cloro-fenol 3%. A clorexidina-cetrimida, cloreto de ben- zalcônio e derivado de cloro-fenol foram eficazes em todos os isolados com concentração inibitória mínima e concen- tração fungicida inferiores à concentração recomendada pelo fabricante. Por outro lado, a ação fungicida do hipoclorito de sódio em 79,1% dos isolados testados foi obtida na concentração recomendada pelo fabricante, com desempenho inferior aos demais desinfetantes avaliados.(AU)

Hospital environments can have pathogens and opportunistic pathogens, important for immunocompromising individuals. The process of cleaning and disinfection constitutes an important measure for the control of these diseases. This study evaluated the sensitivity of yeasts isolated from surfaces of nosocomial veterinary environment to four disinfectants/antiseptics used in the routine of disinfection. The test of broth microdilution was carried in 24isolates of yeasts against 4% sodium hypochlorite, 2% benzalkonium chloride, 6.6% chlorexidine-cetrimide and 3% chloro-phenol derivate. Chlorexidine-cetrimide, benzalkonium chloride and chloro-phenol derivate were efficient in all isolates with minimal inhibitory concentration and minimal fungicide concentration lower than the concentra- tion recommended by manufacturer. By other hand, fungicide action of the sodium hypochlorite in the concentration recommended by the manufacturer was verified in 79.1% of the isolated tested, with the lower performance of than the others evaluated disinfectants.(AU)

Animais , Desinfetantes/análise , Anti-Infecciosos Locais , Antifúngicos , Leveduras
Braz. J. Microbiol. ; 44(1): 139-144, 2013. tab
Artigo em Inglês | VETINDEX | ID: vti-7966


The oral microbiota of humans and animals is made up of a wide variety of yeasts and bacteria, but microbiota of dogs is not totally described. Although such identification is an important step to establish the etiopathogenesis and adequate therapy for the periodontal disease The aim of this study was to evaluate and correlate oral alterations with the presence of yeasts in oral cavity of female dogs. After clinical evaluation samples from healthy and from dogs with oral diseases were obtained from three different oral sites by swabs, curettes, millimeter periodontal probes and HA membrane tip in cellulose ester. Yeast identification was performed through macroscopic and microscopic colony features and biochemical tests. Dental calculus was the most prevalent occurrence in the oral cavity of 59 females. However, the isolation of yeasts was significantly higher (p < 0.05) in animals suffering from halitosis. Eleven yeast species were identified, namely: Malassezia pachydermatis, Rhodotorula spp., Candida albicans, C. catenulata, C. famata, C. guilliermondii, C. parapsilosis, C. intermedia, Trichosporon asahii, T. mucoides and Cryptococcus albidus. It could be concluded that the yeasts are part of the microbiota from the different sites of the oral cavity of the female canines studied without causing any significant alterations except halitosis.(AU)

Animais , Microbiologia/instrumentação , Boca/patologia , Leveduras/ultraestrutura , Cães/microbiologia
Braz. j. vet. res. anim. sci ; 44(6): 441-443, 2007. ilus
Artigo em Português | VETINDEX | ID: vti-5351


A esporotricose é uma micose subcutânea causada pelo fungo dimórfico Sporothrix schenckii. Este artigo descreve o primeiro caso de esporotricose óssea e cutânea, em canino, na cidade de Pelotas, Rio Grande do Sul. O animal apresentava lesões ulceradas e crostosas, há aproximadamente três anos no plano nasal e membro torácico direito, dispnéia e apatia. Para confirmação do diagnóstico, foram realizados exames micológico, histopatológico, radiológico e hematológico. O animal foi tratado durante três meses com 10mg/kg de itraconazol,por via oral, obtendo-se a cura das lesões. Este estudo alerta clínicos de pequenos animais para a ocorrência desta micose em caninos na região de Pelotas, RS.(AU)

The sporotrichosis is a subcutaneous mycosis caused by dimorphic fungus Sporothrix schenckii. This article describes the first cutaneous and osseous sporotrichosis case in canine in the Pelotas city, Rio Grande do Sul. The animal presented crusts and ulcerated lesions,approximately the three years in the nasal plan and right hind-foot,dispneic and apathy. Mycological, histopathological, radiological and hematological diagnosis was realized. The animal was treated by three months with itraconazole, administered orally at a dosage of 10mg/kg, until lesions disappeared. This study alert small animals clinicians for the occurrence of this mycosis in dogs in the region of Pelotas, RS.(AU)

Animais , Esporotricose/diagnóstico , Esporotricose/prevenção & controle , Sporothrix/isolamento & purificação , Itraconazol/administração & dosagem , Cães