Author:
Bastos de Araújo Daniella,Raiol de Almeida Ysis Nayhara,Otake Hamoy Maria Klara,Vasconcelos de Souza Luana,Pacheco Hartcopff Priscille Fidelis,Gonçalves dos Santos Rodrigo,Santos da Silva Lívia Letícia,Lima da Rocha Lucas,Farias dos Santos Murilo,da Silva Deiga Yris,da Cunha Ferreira Rayllan,Vieira de Souza Raíssa,Barbosa Gabriela Brito,Hamoy Moisés
Abstract
The essential oil of rosemary (Rosmarinus officinalis) (EORO) is widely used in folk medicine and has proven therapeutic effects. Our research evaluated high doses of rosemary essential oil in 54 Wistar rats between 180 and 200 g. The study consisted of three experiments: 1) behavioral monitoring of the animals after administration of 500 mg/kg i.p.; 2) electrocorticographic records after drug administration; 3) anticonvulsant drug reaction, where phenytoin, phenobarbital, and diazepam 10 mg/kg i.p were applied. The results showed that the application of EORO presented two phases. Phase 1 was characterized by the appearance of myorelaxation and a reduction in the power of the electrocorticogram in low-frequency cerebral oscillations. Phase 2 was characterized by increased excitability, with the appearance of convulsions and the increased power of electrocorticographic recordings in cerebral oscillations up to 40 Hz. In this phase, three tracing patterns were observed. Beta oscillations were the most prevalent and were better controlled by diazepam, which demonstrates that the excitatory activity of EORO is related to the reduction of GABAergic activity.