Estudo comparativo entre anestesia dissociativa e anestesia inalatória para inoculação intracerebral em camundongos

Abstract

This work seeks to show a comparative analysis between dissociative anesthesia and inhalational general anesthesia used in intracerebral inoculations of mice. The intracerebral inoculation technique (challenge) is used in Biological Quality Control for the potency tests of the rabies vaccine and vaccines with a pertussis component. Intracerebral inoculation is an invasive and painful procedure for the animal, due to the increase in intracranial pressure and, therefore, it is essential to perform anesthesia before the procedure so that the inoculation is performed safely and painlessly, allowing greater comfort to the animal and less variability of the technique. For many years, dissociative anesthesia was the only approach used in laboratory animals, but with the development of studies and research, other approaches, such as inhalation anesthesia, have become increasingly used, providing a lot of safety and good results. Evaluating both anesthesia techniques, we observed that the animals submitted to inhalation anesthesia reached the adequate anesthetic plane more quickly, a quick recovery and low mortality, when compared to dissociative anesthesia. In conclusion, this work showed that for the intracerebral inoculation procedure, the inhalational anesthesia approach is more satisfactory.