Guilherme Schiess Cardoso

Influence of cooling temperature in sperm subpopulations of domestic cats

The objective of this study was to identify and compare domestic feline sperm subpopulations, chilled at -1 °C for 24 and 48 h, as well as to analyze the sperm frequency in different subpopulations. Ten adult cats were used. Sperm collection was performed using electroejaculation (EEJ). Spermatic kinetics were evaluated using a computerized system at three moments: fresh, 24 and 48 h after refrigeration. The ejaculates were divided into a group refrigerated at -1 °C (n = 5,) and a group refrigerated at 4 °C (n = 5),. A total of 1560 spermatozoa were analyzed individually, and the sperm subpopulations were identified using multivariate statistics. Three spermatic subpopulations were defined using prior analysis of the hierarchical dendrogram. A principal components analysis (PCA) identified the existence of three groups with higher iterations at the three moments: PC1 (VAP, VCL, VSL, ALH, SVI), PC2 (STR, LIN, WOB and SMI) and PC3 (BCF). Subpopulation 1, after 48 h of refrigeration at -1 °C, and subpopulation 3, after 24 h of refrigeration at 4 °C, maintained their sperm quality, which allowed us to characterize the groups of spermatozoa that were resistant to cryopreservation. The present study identified three well defined ejaculate spermatozoa subpopulations, with proportional distributions between the groups and two refrigeration resistant subpopulations.

Avaliação de parâmetros fisiológicos de cães submetidos ao mapeamento linfático uterino usando o corante azul patente V para a detecção de anafilaxia

Lymphatic mapping has been performed in humans and dogs. Although several cases of anaphylaxis have been reported in humans, there are no such reports in dogs. The objective of this study was to identify the occurrence of adverse reactions to patent blue V dye in bitches undergoing uterine lymphatic mapping procedures using cardiovascular and hematological evaluations. The experiment was performed in 14 mongrel bitches without any reproductive disease, randomly assigned into two equal groups (PBV- uterine lynphatic mapping and OHE; Control - OHE only). The animals were submitted to pre- and postoperative hematological and serum biochemistry exams (7 days). The anesthetic protocol was: sedation (morphine and acepromazine), induction (propofol), maintenance (isoflurane), transoperative analgesia (fentanyl). Systolic blood pressure was monitored throughout the procedure and arterial blood gas analysis was performed immediate pre and postoperatively. For lymphatic mapping was injected patent blue V in the uterine wall, 10 minutes before OEH. Comparisons between the pre- and postoperative parameters within the same animal were performed using the Wilcoxon-Mann-Whitney test. To compare the values between control and PBV group was obtaining the difference between the pre and post of each group, subjected to the Mann-Whitney test (significance of 5%). Differences were observed (P<0.05) between the pre- and postoperative evaluations in the PBV (total protein and the albumin serum), in both groups (arterial partial pressure of oxygen) and in the Control (arterial oxygen saturation). There were no signs of adverse reactions to the patent blue V dye in the healthy bitches submitted to lymphatic uterine mapping.

Evaluation of physiological parameters of dogs submitted to uterine lymphatic mapping using patent blue V dye for anaphylaxis detection

Justino R.C., Cardoso G.S., Trautwein L.G.C., Alves R.I.A., Flaiban K.K.M.C. & Martins M.I.M. 2016. Evaluation of physiological parameters of dogs submitted to uterine lymphatic mapping using patent blue V dye for anaphylaxis detection. Pesquisa Veterinária Brasileira 36(12):1209-1214. Departamento de Clínicas Veterinárias, Universidade Estadual de Londrina, Rodovia Celso Garcia, Londrina, PR 86061-900, Brazil. E-mail: imartins@uel.br Lymphatic mapping has been performed in humans and dogs. Although several cases of anaphylaxis have been reported in humans, there are no such reports in dogs. The objective of this study was to identify the occurrence of adverse reactions to patent blue V dye in bitches undergoing uterine lymphatic mapping procedures using cardiovascular and hematological evaluations. The experiment was performed in 14 mongrel bitches without any reproductive disease, randomly assigned into two equal groups (PBVuterine lynphatic mapping and OHE; Control OHE only). The animals were submitted to preand postoperative hematological and serum biochemistry exams (7 days). The anesthetic protocol was: sedation (morphine and acepromazine), induction (propofol), maintenance (isoflurane), transoperative analgesia (fentanyl). Systolic blood pressure was monitored throughout the procedure and arterial blood gas analysis was performed immediate pre and postoperatively. For lymphatic mapping was injected patent blue V in the uterine wall, 10 minutes before OEH. Comparisons between the preand postoperative parameters within the same animal were performed using the Wilcoxon-Mann-Whitney test. To compare the values between control and PBV group was obtaining the difference between the pre and post of each group, subjected to the Mann-Whitney test (significance of 5%). Differences were observed (P<0.05) between the preand postoperative evaluations in the PBV (total protein and the albumin serum), in both groups (arterial partial pressure of oxygen) and in the Control (arterial oxygen saturation). There were no signs of adverse reactions to the patent blue V dye in the healthy bitches submitted to lymphatic uterine mapping.

Computed tomographic features of the feline brain change with advancing age

A better understanding of normal or expected encephalic changes with increasing age in cats is needed as a growing number of these animals is attended in veterinary clinics, and imaging data referring to normal age-associated changes are extremely scarce in the literature. The objective of this study was to identify age-related changes in feline brain using CT imaging. Fifteen non-brachycephalic healthy cats with age between 1 to 6 years (adult group) and others over 12 years (geriatric group) were submitted to CT scan of the brain. Statistically significant differences were found between the groups for the ability to identify the left lateral ventricle and for falx cerebri calcification, both identified in a greater number of cats of the geriatric group. A significantly higher mean width of the third ventricle was also detected in geriatric animals. There were no statistically significant differences between lateral ventricular dimensions and encephalic parenchymal attenuation on pre and post-contrast CT phases. The results of the present study show an increase in the incidence of falx cerebri calcification and a third ventricular dilatation with advancing age in cats. Future researches using MRI scanners and a greater quantity of cats are needed in order to identify supplementary age-related changes.

Linfangiografia uterina: comparação de dois métodos para localização do linfonodo ilíaco medial

Different methods for lymphatic mapping in dogs, such as infusing tissues with vital dyes or radioactive substances, have been studied, aiming at the early detection of lymph node metastasis. Thus, one could anticipate therapeutic measures and, consequently, prolong the survival and improve the quality of life of the patients. The objectives of this experiment were to locate the nodes responsible for draining the uterine body and horns and to try to establish the relationship between the uterus and the medial iliac lymph nodes to contribute to the early diagnosis and prognosis of uterine disorders. We studied 15 female dogs divided into two groups (5 dead and 10 intraoperative ovariohysterectomy bitches). The dye used was patent blue V (Patent Bleu V®). It was observed that the iliac lymph node chain receives much of the uterine (horns) drainage. This method should be considered for safer studies of uterine sanity. This information suggests that evaluating these lymph nodes will allow correlating changes in their physiological status with uterine pathologies.