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Souza AD, Rodrigues da Silva GH, Ribeiro L, Mitsutake H, Bordallo HN, Breitkreitz MC, Lima Fernandes PC, Moura LD, Yokaichiya F, Franco M, de Paula E. Fresh Carrier for an Old Topical Local Anesthetic: Benzocaine in Nanostructured Lipid Carriers. ACS Biomater Sci Eng 2024; 10:4958-4969. [PMID: 39074333 PMCID: PMC11322916 DOI: 10.1021/acsbiomaterials.4c00585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 06/17/2024] [Accepted: 06/20/2024] [Indexed: 07/31/2024]
Abstract
Nanostructured lipid carriers (NLC) have emerged as innovative drug delivery systems, offering distinct advantages over other lipid-based carriers, such as liposomes and solid lipid nanoparticles. Benzocaine (BZC), the oldest topical local anesthetic in use, undergoes metabolism by pseudocholinesterase, leading to the formation of p-aminobenzoic acid, a causative agent for allergic reactions associated with prolonged BZC usage. In order to mitigate adverse effects and enhance bioavailability, BZC was encapsulated within NLC. Utilizing a 23 factorial design, formulations comprising cetyl palmitate (solid lipid), propylene glycol monocaprylate (liquid lipid), and Pluronic F68 as surfactants were systematically prepared, with variations in the solid/liquid lipid mass ratios (60:40-80:20%), total lipid contents (15-25%), and BZC concentrations (1-3%). The optimized formulation underwent characterization by dynamic light scattering, differential scanning calorimetry, Raman imaging, X-ray diffraction, small-angle neutron scattering, nanotracking analysis, and transmission electron microscopy (TEM)/cryo-TEM, providing insights into the nanoparticle structure and the incorporation of BZC into its lipid matrix. NLCBZC exhibited a noteworthy encapsulation efficiency (%EE = 96%) and a 1 year stability when stored at 25 °C. In vitro kinetic studies and in vivo antinociceptive tests conducted in mice revealed that NLCBZC effectively sustained drug release for over 20 h and prolonged the anesthetic effect of BZC for up to 18 h. We therefore propose the use of NLCBZC to diminish the effective anesthetic concentration of benzocaine (from 20 to 3% or less), thus minimizing allergic reactions that follow the topical administration of this anesthetic and, potentially, paving the way for new routes of BZC administration in pain management.
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Affiliation(s)
- A. D. Souza
- Departamento
de Bioquímica e Biologia Tecidual, Instituto de Biologia, Universidade Estadual de Campinas (Unicamp), ZIP 13083-862 Campinas, São Paulo, Brazil
| | - G. H. Rodrigues da Silva
- Departamento
de Bioquímica e Biologia Tecidual, Instituto de Biologia, Universidade Estadual de Campinas (Unicamp), ZIP 13083-862 Campinas, São Paulo, Brazil
- Laboratório
Nacional de Biociências, Centro Nacional
de Pesquisa em Energia e Materiais, ZIP 13083-100 Campinas, São
Paulo, Brazil
| | - L.N.M. Ribeiro
- Departamento
de Bioquímica e Biologia Tecidual, Instituto de Biologia, Universidade Estadual de Campinas (Unicamp), ZIP 13083-862 Campinas, São Paulo, Brazil
| | - H. Mitsutake
- Departamento
de Bioquímica e Biologia Tecidual, Instituto de Biologia, Universidade Estadual de Campinas (Unicamp), ZIP 13083-862 Campinas, São Paulo, Brazil
- Niels
Bohr Institute, University of Copenhagen, ZIP 2100 Copenhagen, Denmark
| | - H. N. Bordallo
- Niels
Bohr Institute, University of Copenhagen, ZIP 2100 Copenhagen, Denmark
| | - M. C. Breitkreitz
- Departamento
de Química Analítica, Instituto
de Química, Unicamp, ZIP 13083-862 Campinas, São
Paulo, Brazil
| | - P. C. Lima Fernandes
- Departamento
de Bioquímica e Biologia Tecidual, Instituto de Biologia, Universidade Estadual de Campinas (Unicamp), ZIP 13083-862 Campinas, São Paulo, Brazil
| | - L. D. Moura
- Departamento
de Bioquímica e Biologia Tecidual, Instituto de Biologia, Universidade Estadual de Campinas (Unicamp), ZIP 13083-862 Campinas, São Paulo, Brazil
| | - F. Yokaichiya
- Departamento
de Física, Universidade Federal do
Paraná (UFPR), ZIP 81531-980 Curitiba, Paraná, Brazil
| | - M. Franco
- Instituto
de Pesquisas Energéticas e Nucleares, IPEN-CNEN/SP, ZIP 05508-000 São
Paulo, São Paulo, Brazil
| | - E. de Paula
- Departamento
de Bioquímica e Biologia Tecidual, Instituto de Biologia, Universidade Estadual de Campinas (Unicamp), ZIP 13083-862 Campinas, São Paulo, Brazil
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Santana VC, Marmentini BM, Cruz GG, de Jesus LC, Walicheski L, Beffa FH, Maffei THP, Streg RV, Veiga-Junior VF, Andrighetti CR, Freitas de Lima MC, de Sousa Valladão DM, de Oliveira RC, Neyra MOC, de Araújo Berber RC, Falconi-Sobrinho LL, Coimbra NC, de Oliveira R. Copaifera langsdorffii Desf. tree oleoresin-induced antinociception recruits µ 1- and κ -opioid receptors in the ventrolateral columns of the periaqueductal gray matter. Behav Brain Res 2024; 461:114832. [PMID: 38142860 DOI: 10.1016/j.bbr.2023.114832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 12/19/2023] [Accepted: 12/19/2023] [Indexed: 12/26/2023]
Abstract
Popular medicine has been using oleoresin from several species of copaíba tree for the treatment of various diseases and its clinical administration potentially causes antinociception. Electrical stimulation of ventrolateral (vlPAG) and dorsolateral (dlPAG) columns of the periaqueductal gray matter also causes antinociception. The aim this study was to verify the antinociceptive effect of oleoresin extracted from Copaifera langsdorffii tree and to test the hypothesis that oleoresin-induced antinociception is mediated by µ1- and κ-opioid receptors in the vlPAG and dlPAG. Nociceptive thresholds were determined by the tail-flick test in Wistar rats. The copaíba tree oleoresin was administered at different doses (50, 100 and 200 mg/kg) through the gavage technique. After the specification of the most effective dose of copaíba tree oleoresin (200 mg/kg), rats were pretreated with either the µ1-opioid receptor selective antagonist naloxonazine (at 0.05, 0.5 and 5 µg/ 0.2 µl in vlPAG, and 5 µg/ 0.2 µl in dlPAG) or the κ-opioid receptor selective antagonist nor-binaltorphimine (at 1, 3 and 9 nmol/ 0.2 µl in vlPAG, and 9 nmol/ 0.2 µl in dlPAG). The blockade of µ1 and κ opioid receptors of vlPAG decreased the antinociception produced by copaíba tree oleoresin. However, the blockade of these receptors in dlPAG did not alter copaíba tree oleoresin-induced antinociception. These data suggest that vlPAG µ1 and κ opioid receptors are critically recruited in the antinociceptive effect produced by oleoresin extracted from Copaifera langsdorffii.
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Affiliation(s)
- Vanessa Cristina Santana
- Laboratory of Experimental Neuropsychobiology and Toxicology, Institute of Health Sciences, Federal University of Mato Grosso (UFMT), Av. Alexandre Ferronato, 1200, Reserva 35, Setor Industrial, Sinop 78557-267, Mato Grosso, Brazil
| | - Bruna Magda Marmentini
- Laboratory of Experimental Neuropsychobiology and Toxicology, Institute of Health Sciences, Federal University of Mato Grosso (UFMT), Av. Alexandre Ferronato, 1200, Reserva 35, Setor Industrial, Sinop 78557-267, Mato Grosso, Brazil
| | - Geórgia Guedes Cruz
- Laboratory of Experimental Neuropsychobiology and Toxicology, Institute of Health Sciences, Federal University of Mato Grosso (UFMT), Av. Alexandre Ferronato, 1200, Reserva 35, Setor Industrial, Sinop 78557-267, Mato Grosso, Brazil
| | - Leila Camila de Jesus
- Laboratory of Experimental Neuropsychobiology and Toxicology, Institute of Health Sciences, Federal University of Mato Grosso (UFMT), Av. Alexandre Ferronato, 1200, Reserva 35, Setor Industrial, Sinop 78557-267, Mato Grosso, Brazil
| | - Luana Walicheski
- Laboratory of Experimental Neuropsychobiology and Toxicology, Institute of Health Sciences, Federal University of Mato Grosso (UFMT), Av. Alexandre Ferronato, 1200, Reserva 35, Setor Industrial, Sinop 78557-267, Mato Grosso, Brazil
| | - Fábio Henrique Beffa
- Laboratory of Experimental Neuropsychobiology and Toxicology, Institute of Health Sciences, Federal University of Mato Grosso (UFMT), Av. Alexandre Ferronato, 1200, Reserva 35, Setor Industrial, Sinop 78557-267, Mato Grosso, Brazil
| | - Talles Henrique Pichinelli Maffei
- Laboratory of Experimental Neuropsychobiology and Toxicology, Institute of Health Sciences, Federal University of Mato Grosso (UFMT), Av. Alexandre Ferronato, 1200, Reserva 35, Setor Industrial, Sinop 78557-267, Mato Grosso, Brazil
| | - Rafaela Vieira Streg
- Laboratory of Experimental Neuropsychobiology and Toxicology, Institute of Health Sciences, Federal University of Mato Grosso (UFMT), Av. Alexandre Ferronato, 1200, Reserva 35, Setor Industrial, Sinop 78557-267, Mato Grosso, Brazil
| | - Valdir Florêncio Veiga-Junior
- Chemical Engineering Section, Military Institute of Engineering, Praça General Tibúrcio, 80, Praia Vermelha, Urca, Rio de Janeiro, 22290-270 Rio de Janeiro, Brazil
| | - Carla Regina Andrighetti
- Laboratory of Pharmacognosy, Institute of Health Sciences, Mato Grosso Federal University (UFMT), Av. Alexandre Ferronato, 1200, Reserva 35, Setor Industrial, Sinop 78557-267, Mato Grosso, Brazil
| | - Milena Campelo Freitas de Lima
- Federal University of Amazonas, Department of Chemistry, Av. General Rodrigo Octávio Jordão Ramos, 1200, Coroado I, Manaus 69067-005, Amazonas, Brazil
| | - Dênia Mendes de Sousa Valladão
- Laboratory of Quality Control, Institute of Health Sciences, Federal University of Mato Grosso (UFMT), Av. Alexandre Ferronato, 1200, Reserva 35, Setor Industrial, Sinop 78557-267, Mato Grosso, Brazil
| | - Rithiele Cristina de Oliveira
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil; Behavioural Neurosciences Institute (INeC), Av. Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil
| | - Milton Omar Cordova Neyra
- Laboratory of Experimental Neuropsychobiology and Toxicology, Institute of Health Sciences, Federal University of Mato Grosso (UFMT), Av. Alexandre Ferronato, 1200, Reserva 35, Setor Industrial, Sinop 78557-267, Mato Grosso, Brazil
| | - Rodolfo Cassimiro de Araújo Berber
- Laboratory of Experimental Neuropsychobiology and Toxicology, Institute of Health Sciences, Federal University of Mato Grosso (UFMT), Av. Alexandre Ferronato, 1200, Reserva 35, Setor Industrial, Sinop 78557-267, Mato Grosso, Brazil
| | - Luiz Luciano Falconi-Sobrinho
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil; Behavioural Neurosciences Institute (INeC), Av. Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil; NAP-USP-Neurobiology of Emotions Research Center (NuPNE), Ribeirão Preto Medical School of the University of São Paulo, Av. Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil
| | - Norberto Cysne Coimbra
- Laboratory of Neuroanatomy and Neuropsychobiology, Department of Pharmacology, Ribeirão Preto School of Medicine of the University of São Paulo (FMRP-USP), Av. Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil; Behavioural Neurosciences Institute (INeC), Av. Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil; NAP-USP-Neurobiology of Emotions Research Center (NuPNE), Ribeirão Preto Medical School of the University of São Paulo, Av. Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil
| | - Ricardo de Oliveira
- Laboratory of Experimental Neuropsychobiology and Toxicology, Institute of Health Sciences, Federal University of Mato Grosso (UFMT), Av. Alexandre Ferronato, 1200, Reserva 35, Setor Industrial, Sinop 78557-267, Mato Grosso, Brazil; Behavioural Neurosciences Institute (INeC), Av. Bandeirantes, 3900, Ribeirão Preto 14049-900, São Paulo, Brazil.
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