No abstract

Objectives The purpose of this study was to evaluate histopathologic aspects of, and the expression of Ki-67 and cleaved caspase-3 in, feline mammary carcinoma (FMC). Methods Feline mammary tumors were surgically obtained by mastectomy from 30 female cats and were fixed with formalin and embedded in paraffin wax. Four-micron sections were stained with hematoxylin and eosin for histopathologic diagnosis. Ki-67 and cleaved caspase-3 were analyzed by immunohistochemistry. Results Samples were histologically confirmed as FMC. Positive immunostaining was observed in all cancer samples for both nuclear Ki-67 and cleaved caspase-3, with a mean positive staining percentage of 27.5% and 21.2%, respectively. No statistically significant correlations between Ki-67 and cleaved caspase-3 were observed within FMC. Conclusions and relevance A high proliferation index was found in feline mammary tumors. This is the first study evaluating cleaved caspase-3 expression in FMC.

No abstract

Pesq. Vet. Bras. 33(1):80-85, janeiro 2013 80 RESUMO.-O hipertireoidismo é a endocrinopatia mais comum em gatos idosos. Devido à natureza progressiva da doença, a identificação de um estágio subclínico se torna Avaliação do perfil clínico e laboratorial de gatos hipertireoideos com ou sem lobo tireoidiano aumentado a palpação cervical Hyperthyroidism is the most common endocrine disorder of older cats. Due to the progressive nature of the disease, the identification of a subclinical stage is essential in order to have a better control of the disease. The present study was a survey of the frequency of feline hyperthyroidism in Rio de Janeiro, from March, 2007 to April, 2008. The purpose of this study was to perform an evaluation of the clinical, laboratorial and echocardiographic aspects in a feline population of naturally acquired hyperthyroidism, with or without palpable thyroid gland. The selection of the cats was done by the documentation of an elevation of total thyroxine (TT4) levels by radioimmunoassay. The animals were divided in two groups according to the thyroid palpation: group I (non-palpable thyroid lobe) and group II (palpable thyroid lobe). Laboratorial and complete clinical evaluations were performed in all cats. The clinical evaluation included behavioral evaluation, body weight, body condition, dermatologic, cardiopulmonary auscultation, thyroid palpation and systolic blood pressure reading. Besides the TT4, the following exams were performed: urea, creatinine, alanine aminotransferase (ALT), alkaline phosphatase (ALP) and glucose. Thirty one cats had an echocardiogram performed. On the basis of TT4 concentrations, 51 of the 178 cats were classified as hyperthyroid. One or more enlarged thyroid glands were palpated in 25 of the 51 hyperthyroid cats and were included at Group II. Twenty six cats didn't palpable thyroid gland and were included at Group I. Clinical, laboratorial and echocardiographic parameters were similar between the two groups. However, the TT4 levels were significantly lower in the non-palpable thyroid group. All geriatric cats must be thyroid gland palpable on clinic examination and have TT4 measured. Many hyperthyroid cats may be asymptomatic and early diagnosis prevents organ damage such as liver, kidneys and heart.

Case summaryA 6-year-old male domestic shorthair cat presented with frequent food regurgitation and dysphagia. Plain thoracic radiographs revealed a calcified mass overlying the topography of the mediastinum, as well as dilation of the cervical portion of the esophagus due to an accumulation of food. Endoscopic examination showed a severe extraluminal esophageal stricture at the mediastinum entrance. Surgery and a gastric tube were declined by the cat’s owner, with palliative support preferred. However, 1 year later, the cat presented with severe cachexia, dysphagia, salivation, dehydration and inspiratory dyspnea. Thoracic computed tomography was performed to evaluate the possibility of surgical resection. A mass of bone density originating in the second left rib was observed. The mass did not appear to have invaded adjacent structures but marked compression of the mediastinal structures was observed. Surgical resection was performed and a prosthetic mesh was used to reconstruct the thoracic wall. Transient Horner’s syndrome developed in the left eye postoperatively, and was resolved within 4 weeks. Histopathology revealed a benign osteoma. Thirty-two months after surgery, the cat was well and free of disease.Relevance and novel informationRib tumors should be included in a differential diagnosis in cats with extraluminal esophageal stricture. CT should be performed for treatment planning. Surgical treatment was curative in this case.

This case report describes the outcome of treatment of dogs with advanced (deeply invasive) nasal planum squamous cell carcinomas with palliative or definitive radiation therapy. All dogs were diagnosed with nasal planum squamous cell carcinoma by histopathology, and their owners declined aggressive surgery. Dogs were treated with a cobalt-60 unit, definitive-intent radiation protocol consisting of 15 daily fractions (Monday-Friday) of 2.8 Gy, and palliative radiation protocol consisting of 4 fractions of 8 Gy performed once a week. Three dogs had T3 tumors and three had T4 tumors according to the WHO staging system. Two dogs had tumor complete remission and four had tumor partial remission. Survival time of dogs submitted to radiation therapy was 95-417 days. Radiation acute side effects involved only mild epilation and cutaneous erythema in palliative protocols, and moist desquamation, epilation, mild rhinitis and oral mucositis in definitive-intent RT. Radiation therapy, especially palliative protocols, can be a treatment option for nasal planum squamous cell carcinoma in dogs, when the owner declines aggressive surgery. It may contribute to partial or complete tumor remission and better patient quality of life, even at advanced stages, leading to mild side effects.

No abstract

The presence of Staphylococcus sp in vaginal samples obtained from squirrel monkeys suggests that these animals were in a carrier state. Furthermore, isolating strains resistant to methicillin reinforces the biosafety care of a colony.