Objectives: Feline injection site sarcoma (FISS) is a rapid growing locally aggressive tumor with a low metastatic rate. Its histologic features are clearly defined, but there are few studies regarding its immunohistochemical characteristics. The present study investigated the immunohistochemical characteristics of 21 cases of FISS. Methods: FISSs from 12 male and nine female cats, 20 mixed-breed and one Siamese, were included in the study. After histopathological diagnosis, additional histologic sections were immunostained for vimentin, cytokeratin, desmin, S100 protein, viral feline leukemia virus (FeLV) particles, cyclooxygenase 2 (COX-2) and c-KIT. Positive and negative controls were adopted accordingly. Immunostainings were classified as positive or negative according to the number of positive cells from a total of 1000 cells per tumor section. Results: Histopathologic diagnosis of the tumors revealed 18 (85.7%) fibrosarcomas and three (14.3%) other sarcomas; four fibrosarcomas (22.2%) were grade III, five (27.8%) were grade II and nine (50.0%) were grade I. Two sarcomas were grade III and one was grade II. Seventeen (81%) tumors were negative for desmin. All samples were positive for vimentin. Twenty tumors (95.2%) were positive for S-100 protein. Positivity for c-KIT was observed in four (19%) samples; COX-2 was positive in 13 (61.9%) and FeLV viral particles were positive in nine (42.9%) FISSs. Conclusions and relevance: Immunohistochemical findings of FISSs revealed positive immunostainings for desmin, vimentin, S-100 protein, c-KIT, COX-2 and FeLV viral particles.

Cold atmospheric plasma (CAP) is emerging as an innovative approach for cancer treatment because of its selectivity for malignant cells and absence of significant adverse effects. While modern oncological therapies face challenges such as tumor heterogeneity and treatment resistance, CAP presents itself as a low-cost and environmentally sustainable alternative. Its mechanisms of action involve reactive oxygen and nitrogen species (RONS), UV radiation, and electromagnetic fields, which induce cell death. Preclinical and clinical studies have demonstrated the efficacy of CAP, with devices such as dielectric barrier discharge (DBD) and the plasma jet developed to minimize damage to healthy cells. Some CAP devices are already approved for clinical use, showing safety and efficacy. However, the standardization of treatments remains a challenge due to the variety of devices and parameters used. Although CAP has shown promising cytotoxic effects in vitro and in animal models, especially in different cancer cell lines, further research, particularly in vivo and in veterinary medicine, is needed to optimize its clinical use and maximize its efficacy in combating cancer.

O fator de crescimento do endotélio vascular (VEGF) é um fator angiogênico com papel importante em processos patológicos e fisiológicos. O VEGF pode ser quantificado em diversos fluidos orgânicos, incluindo amostras de soro e plasma. O presente trabalho investigou a concentração do VEGF no soro e no plasma de cães saudáveis a fim de recomendar o manejo ótimo de amostras biológicas para a determinação dos níveis do VEGF. Amostras de sangue de 30 cães saudáveis foram coletadas em tubos estéreis contendo EDTA para análise do plasma e em tubos com ativador de coagulação para análise do soro. Os tubos foram centrifugados após 90 minutos da coleta a 1.400 x g por 10 minutos. A concentração do VEGF foi determinada com o método quantitativo de ELISA. O nível sérico médio de VEGF foi de 26,5+13,3pg/mL e o plasmático foi 11,7 + 16.4 pg/mL (p = 0,0003). Houve correlação positiva entre o VEGF do soro com as plaquetas (r = 0,37, p = 0,03) e correlação negativa entre o VEGF do soro com hemoglobina (r = -0,38, p = 0,03) e entre VEGF do plasma com hemoglobina (r = -0,34, p = 0,06). A comparação dos resultado obtidos nos exames de plasma e soro indicou que amostras de plasma podem ser utilizadas como ótimo fluido para quantificação do VEGF de cães.

Mammary tumors have a high prevalence in bitches and women, and are related to high rates of morbidity and mortality. For the human species, thermography has stood out as a diagnostic tool for breast cancer. However, its clinical benefit in bitches remains unknown. Thus, the goal of the present study was to evaluate the diagnostic applicability of infrared thermography for canine mammary tumors, as well as to correlate tumor temperature with mitotic index and tumor volume. Thermographic and digital images of eight bitches with mammary neoplasms were captured. Thermograms were entered into the FLIR tools software and the temperature of 15 tumor and 15 healthy glands from the contralateral mammary chain was analyzed. There was no significant difference (p = 0.786) between the mean temperature of neoplastic (33.71°C±1.86) and healthy (33.54°C±1.59) glands. There was a negative and moderate correlation between tumor temperature and mitotic index (ρ= -0.52 p = 0.049). However, no correlation was detected between mammary temperature and tumor volume (p = 0.10). Although thermography allowed no distinction between neoplastic and healthy mammary glands in bitches, it may be promising to assess the proliferative rate of tumors. In addition, malignant neoplasms may be more often hypothermic than healthy tissue.

The present study identified professional training aspects in veterinary medicine at a federal public university in the Northeast of Brazil based on the graduates perception. The outcome of this study is anticipated to facilitate updating of pedagogical project execution of the courses in related areas to improve their curriculum. Hence, the course coordination started monitoring the graduates using an online questionnaire on the course webpage. The form consisted of questions about the graduate's sociodemographic information; academic training; professional performance; evaluation about the humanistic and technical skills; expertise and knowledge areas; job market perception; and curriculum evaluation. This survey was performed following the ethical criteria. Data were analyzed using the Chi-square test ( p < .05). Graduates work mainly in the Northeast region of the country, and are employed less than a year after graduation. Moreover, they are working in their training area with a compatible salary. They recognized the generalist profile of their training. They also believed that the course promotes articulation between teaching, and research and extension, as well as consider the discipline contents more theoretical than practical. Upon completing the course, 41% of the graduates felt prepared for the job market, especially in the area of animal health. The results obtained allowed us to understand the socioeconomic, demographic, and professional profiles of the trained professionals. Therefore, monitoring the trajectory of graduates can support decisions about the didactic-pedagogical adjustments aimed at promoting the quality of professional training, thereby meeting the job market demands.