1. Enhancement of orofacial antinociceptive effect of carvacrol, a monoterpene present in oregano and thyme oils, by β-cyclodextrin inclusion complex in mice
- Author
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Adriano Antunes de Souza Araújo, Parimelazhagan Thangaraj, Lucindo José Quintans-Júnior, Jackson Roberto Guedes da Silva Almeida, Irwin Rose Alencar de Menezes, Fyama Ferreira e Castro, Rajiv Gandhi Gopalsamy, Mairim Russo Serafini, Henrique Douglas Melo Coutinho, Bruno Anderson Fernandes da Silva, Juliane Cabral Silva, Rita de Cássia Meneses Oliveira, Saravanan Shanmugam, Jullyana S.S. Quintans, Anita Oliveira Brito Pereira Bezerra Martins, and Maria Rayane Correia de Oliveira
- Subjects
Male ,Nociception ,0301 basic medicine ,Orofacial pain ,Analgesic ,Pharmacology ,Thymus Plant ,Mice ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Facial Pain ,Origanum ,medicine ,Animals ,Carvacrol ,Pain Measurement ,Diazepam ,Hand Strength ,Morphine ,beta-Cyclodextrins ,Glutamate receptor ,General Medicine ,030104 developmental biology ,chemistry ,Opioid ,Capsaicin ,Anesthesia ,Monoterpenes ,Cymenes ,medicine.symptom ,030217 neurology & neurosurgery ,medicine.drug - Abstract
Orofacial pain is associated with diagnosis of chronic pain of head, face, mouth, neck and all the intraoral structures. Carvacrol, a naturally occurring isoprenoid with diverse class of biological activities including anti-inflammatory, analgesic, antitumor and antioxidant properties. Now, the antinociceptive effect was studied in mice pretreatment with carvacrol (CARV) and β-cyclodextrin complex containing carvacrol (CARV-βCD) in formalin-, capsaicin-, and glutamate- induced orofacial nociception. Mice were pretreated with vehicle (0.9% Nacl, p.o.), CARV (10 and 20mg/kg, p.o.), CARV-βCD (10 and 20mg/kg, p.o.) or MOR (10mg/kg, i.p.) before the nociceptive behavior induced by subcutaneous injections (s.c.) of formalin (20μl, 2%), capsaicin (20μl, 2.5μg) or glutamate (20μl, 25μM) into the upper lip respectively. The interference on motor coordination was determined using rotarod and grip strength meter apparatus. CARV-βCD reduced the nociceptive during the two phases of the formalin test, whereas CARV did not produced the reduction in face-rubbing behavior in the initial phase. CARV-βCD (20mg/kg, p.o.) produced 49.3% behavior pain while CARV alone at 20mg/kg, p.o, produced 28.7% of analgesic inhibition in the second phase of formalin test. CARV, CARV-βCD and Morphine (MOR) showed a significant reduction against nociception caused by capsaicin or glutamate injection. Thus the encapsulation of carvacrol in β-cyclodextrin can acts as a considerable therapeutic agent with pharmacological interest for the orofacial pain management.
- Published
- 2016
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