Anestesia balanceada em gato palheiro (Leopardus braccatus) para realização de gastrotomia e enterotomia ­ relato de caso / Balanced anesthesia in pamps cat (Leopardus braccatus) for gastrotomy and enterotomy ­ case report / Anestesia balanceada en gato palheiro (Leopardus braccatus) para gastrotomía y enterotomía ­ reporte de caso

Foi atendido no Hospital Veterinária da Universidade Federal de Mato Grosso (HOVET-UFMT) - Campus Cuiabá, um gato palheiro (Leopardus braccatus), macho, filhote e pesando 1,8kg. Após avaliação clínica e exames complementares diagnosticou-se presença de corpo estranho solido gástrico e intestinal. Como medicação pré-anestésica optou-se pela associação de cetamina (1mg/kg) e midazolam (0,2mg/kg), seguiu-se com a indução com propofol (à efeito) e manutenção anestésica por meio do fornecimento de isofluorano. Como técnica adicional utilizou-se epidural, com uma associação de lidocaína (4,5mg/kg) e morfina (0,1mg/kg). Durante o procedimento anestésico notou-se estabilidade das variáveis cardiovasculares e respiratórias, além de recuperação satisfatória ao final do procedimento.

Was attended to in the Veterinary Hospital of the Federal University of Mato Grosso (HOVET-UFMT) - Campus Cuiabá, a pantanal cat (Leopardus braccatus), male, puppy and weighing 1.8 kg. After clinical evaluation and complementary exams, the presence of a solid gastric and intestinal foreign body was diagnosed. As pre-anesthetic medication, the association of ketamine (1mg/kg) and midazolam (0.2mg/kg) was chosen, followed by induction with propofol (for effect) and anesthetic maintenance by supplying isoflurane. As an additional technique, an epidural was used, with an association of lidocaine (4.5mg/kg) and morphine (0.1mg/kg). During the anesthetic procedure, stability of cardiovascular and respiratory variables was observed, in addition to satisfactory recovery at the end of the procedure.

Ingresó en el Hospital Veterinario de la Universidad Federal de Mato Grosso (HOVET-UFMT) · Campus Cuiabá, un gato palheiro (Leopardus braccatus), macho, cachorro y con un peso de 1,8 kg. Luego de evaluación clínica y exámenes complementarios se diagnosticó la presencia de cuerpo extraño sólido gástrico e intestinal. Como medicación preanestésica se optó por la asociación de ketamina (1 mg/kg) y midazolam (0,2 mg/kg), seguida de inducción con propofol (por efecto) y mantenimiento anestésico mediante suministro de isoflurano. Como técnica adicional se utilizó epidural, con asociación de lidocaína (4,5 mg/kg) y morfina (0,1 mg/kg). Durante el procedimiento anestésico se observó estabilidad de variables cardiovasculares y respiratorias, además de recuperación satisfactoria al final del procedimiento.

Presença da mutação do gene BRCA1 em cadelas com tumores mamários malignos / Presence of BRCA1 gene mutation in bitches with malignant mammary tumors

Mammary tumors (MTs) in bitches are similar to breast cancers in women. Thus, they can be used as a model for human breast cancer and findings can be extrapolated for use in human medicine. BRCA1 is a tumor suppressor gene. When the gene has a mutation, it cannot repair damaged DNA, which causes genetic instability and tumorigenesis. Therefore, we aimed to study the frequency of single nucleotide polymorphisms (SNPs) in the BRCA1 gene that are associated with distinct histological types of malignant MT in bitches. The study population consisted of 91 bitches, including a control group of 6 animals with healthy mammary glands and 85 animals with MTs. All animals underwent a presurgery evaluation consisting of a questionnaire administered to the person responsible for the animal, a physical examination, collection of peripheral blood for hematological and serum biochemistry evaluations, an electrocardiogram, and a preanesthesia evaluation. In addition, distant metastasis was studied via chest radiography and abdominal ultrasound. After evaluations were complete, the animals that could undergo surgery were administered general anesthesia and underwent a mastectomy or mammary gland sample collection. Histopathological examination and molecular analysis were performed to identify mutations in the BRCA1 gene. Histopathological examinations found 10 different types of malignant tumors in 36 sick animals. Tumor samples plus samples from the 6 control animals were subjected to DNA extraction, polymerase chain reaction (PCR) analysis, and genetic sequencing. The tumor with the highest incidence (33.33%) was a complex carcinoma, followed by carcinoma in mixed tumor (13.88), tubular carcinoma (13.88) and carcinosarcoma (13.88). Molecular analysis revealed 3 different SNP points in 5 samples (4006G>A, 3619A>G, and 3761C>T). The allelic variant 4006G>A (1/36) resulted in the alteration of the amino acid valine by isoleucine (V1336 I). The mutation 3619A>G (2/36) inserted the amino acid alanine instead of threonine (T1207 A). The mutation 3761C>T (2/36) led to the alteration of the amino acid serine by phenylalanine (S1254 F), a mutation for which there are no published reports. The histological types that showed BRCA1 mutations were complex carcinoma (1/5), carcinoma in mixed tumor (1/5), papillary carcinoma (1/5) and tubular carcinoma (2/5). Software analysis identified the new SNP (nucleotide 3761) in BRCA1 and 2 point mutations in nucleotides 4006 and 3619 and responsible for genetic instability. The development of breast cancer is caused by many endogenous and exogenous factors. The results of our study show that these factors have a greater presence in female, mixed breed, uncastrated, and older dogs, confirming the data in the veterinary literature. In the present study, we found different histological types of malignant breast tumors with mutations in the BRCA1 gene, as other authors have reported. However, we also found the mutation 3761C>T, which, to the best of our knowledge, has not been reported in the literature. This shows the need for studies in veterinary medicine that assess mutations in the BRCA1 gene and the most common histological types. In conclusion, SNPs in the BRCA1 gene cause genetic instability, resulting in additional mutations that lead to the development of breast tumors. They are point mutations that affect transcription, resulting in truncated proteins. These proteins may have a loss of function, leading to carcinogenesis.(AU)

Evaluation of intraluminal pressure in cystorrhaphies with and without intestinal serosal patch supplementation from canine cadavers

PURPOSE:To evaluate the maximal intraluminal pressure (MIP) supported by canine cadaveric urinary bladders that underwent cystotomy followed by cystorraphy, with and without serosal patching-supplementation.METHODS:Two groups (n=8 each) were formed, and in one (conventional) the cystotomy was closed with cushing pattern. In the other group (serosal), the same procedure was performed, and a piece of jejunum was used for the construction of the serosal patching over the cystorraphy. MIP was measured by means of an invasive blood pressure transducer with closed stopcock attached to a multiparameter monitor. At the end of each measurement, the bladder body circumference was assessed.RESULTS:Mean±SD MIP sustained for the conventional and serosal groups were 28.88±5.08 and 65.38±10.99 mmHg, respectively (p<0.0001). Bladder circumference did not change significantly between groups (p=0.35) and did not correlate with MIP assessed in conventional (p=0.27; r=0.4379) and serosal groups (p=0.37; r=-0.3637).CONCLUSION:Serosal patch-supplemented cystorraphies were able to sustain intraluminal pressures 55.8% higher, than nonsupplemented cystorraphies in specimens from canine cadavers.