Efeitos da intoxicação experimental por amitraz em gatos

Este trabalho estudou os efeitos da intoxicação experimental por amitraz em 16 gatos, distribuídos, aleatoriamente, em dois grupos: grupo amitraz - animais receberam amitraz a 1,5% na dose de 1,0 mg/kg IV; e grupo controle - animais sem amitraz. Parâmetros fisiológicos sangüíneos, do sistema cardiorespiratório e de sedação foram aferidos até 360min. Perfil sangüíneo, uréia, creatinina, alanina aminotransferase e aspartato aminotransferase não foram afetados pelo amitraz. Sedação, perda de reflexos, hipotermia, bradicardia, bradiarritmias, hipotensão, bradipnéia, midríase, além de transitória hiperglicemia, hipoinsulinemia e diminuição dos níveis de cortisol, foram observados nos gatos experimentalmente expostos ao amitraz. Os efeitos alfa 2-adrenérgicos induzidos pela intoxicação por amitraz em gatos são muito similares aos mesmos efeitos relatados em outras espécies, contribuindo com mais informações dessa intoxicação para a toxicologia veterinária.This work studied the effects of experimental amitraz intoxication in cats. Sixteen cats were randomly divided equally into two groups: amitraz group - animals received 1.5% amitraz at 1mg/kg IV; and the control group - animals without amitraz. Physiological parameters from blood, cardiorespiratory system, and sedation indicators were quantified over time up to 360 minutes. Blood profile, urea, creatinine, alananine aminotransferase and aspartate aminotransferase were not affected by amitraz. Sedation, loss of reflexes, hypothermia, bradycardia, bradyarrhythmia, hypotension, bradypnea, mydriasis, besides transitory hyperglycemia, hypoinsulinemia and decrease of cortisol levels were observed in cats experimentally exposed to amitraz. The alpha2-adrenergic effects induced by amitraz intoxication in cats are very similar to the same effects reported in others species, contributing with more information about this type of intoxication to veterinary toxicology

Evaluation of collagen in dermal wounds of rabbits treated with different sources of platelet-rich plasma

<p></p><p>ABSTRACT In order to compare the tissue regeneration of dermal wounds in treated and untreated rabbits serially with different sources of platelet rich plasma (PRP) gel, dermal biopsies were made in the dorsal region with the aid of an 8mm punch. The right side was treated with 0.9% NaCl and, on the left side, the different sources of PRPs (autologous, heterologous and homologous) on days 0, 3, 7, 10, 14 were applied and monitored for 17 days. At the end of the 17th day, histopathological evaluation of the wounds was performed. From the total of 24 animals, six rabbits (3 males and 3 females) were used only as donors to obtain the homologous PRP gel. A healthy, adult dog was used as a donor during the experiment to prepare the PRP gel from the heterologous group. The mean values of the fibers of the autologous and homologous groups were very similar (75.0±13.7 and 73.1±10.2, respectively), when compared to the means obtained in the control group (71.5±10.8). The collagen fibers of the heterologous group were inferior (P<0.05) to the other groups (59.4±11.3). It is concluded that the heterologous source produces less organized and homogeneous collagen fibers and should be the last resource to be used in order to promote good quality healing.</p><p></p