Improved Local Anesthesia at Inflamed Tissue Using the Association of Articaine and Copaiba Oil in Avocado Butter Nanostructured Lipid Carriers.

Autor: Rodrigues da Silva GH; Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas-UNICAMP, Campinas 13083-862, SP, Brazil., Paes Lemes JB; Department of Structural and Functional Biology, Institute of Biology, University of Campinas-UNICAMP, Campinas 13083-862, SP, Brazil., Geronimo G; Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas-UNICAMP, Campinas 13083-862, SP, Brazil., de Carvalho FV; Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas-UNICAMP, Campinas 13083-862, SP, Brazil., Mendonça TC; Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas-UNICAMP, Campinas 13083-862, SP, Brazil., Malange KF; Department of Structural and Functional Biology, Institute of Biology, University of Campinas-UNICAMP, Campinas 13083-862, SP, Brazil., de Lima FF; Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas-UNICAMP, Campinas 13083-862, SP, Brazil., Breitkreitz MC; Department of Analytical Chemistry, Institute of Chemistry, University of Campinas-UNICAMP, Campinas 13083-970, SP, Brazil., Parada CA; Department of Structural and Functional Biology, Institute of Biology, University of Campinas-UNICAMP, Campinas 13083-862, SP, Brazil., Dalla Costa T; Department of Production and Control of Medicines, Faculty of Pharmacy, Federal University of Rio Grande do Sul-UFRGS, Porto Alegre 90610-000, RS, Brazil., de Paula E; Department of Biochemistry and Tissue Biology, Institute of Biology, University of Campinas-UNICAMP, Campinas 13083-862, SP, Brazil.
Jazyk: angličtina
Zdroj: Pharmaceuticals (Basel, Switzerland) [Pharmaceuticals (Basel)] 2023 Apr 05; Vol. 16 (4). Date of Electronic Publication: 2023 Apr 05.
DOI: 10.3390/ph16040546
Abstrakt: Unsuccessful anesthesia often occurs under an inflammatory tissue environment, making dentistry treatment extremely painful and challenging. Articaine (ATC) is a local anesthetic used at high (4%) concentrations. Since nanopharmaceutical formulations may improve the pharmacokinetics and pharmacodynamics of drugs, we encapsulated ATC in nanostructured lipid carriers (NLCs) aiming to increase the anesthetic effect on the inflamed tissue. Moreover, the lipid nanoparticles were prepared with natural lipids (copaiba ( Copaifera langsdorffii ) oil and avocado ( Persia gratissima ) butter) that added functional activity to the nanosystem. NLC-CO-A particles (~217 nm) showed an amorphous lipid core structure according to DSC and XDR. In an inflammatory pain model induced by λ-carrageenan in rats, NLC-CO-A improved (30%) the anesthetic efficacy and prolonged anesthesia (3 h) in relation to free ATC. In a PGE2-induced pain model, the natural lipid formulation significantly reduced (~20%) the mechanical pain when compared to synthetic lipid NLC. Opioid receptors were involved in the detected analgesia effect since their blockage resulted in pain restoration. The pharmacokinetic evaluation of the inflamed tissue showed that NLC-CO-A decreased tissue ATC elimination rate (ke) by half and doubled ATC's half-life. These results present NLC-CO-A as an innovative system to break the impasse of anesthesia failure in inflamed tissue by preventing ATC accelerated systemic removal by the inflammatory process and improving anesthesia by its association with copaiba oil.
Databáze: MEDLINE
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