Mucoadhesive, Thermoreversible Hydrogel, Containing Tetracaine-Loaded Nanostructured Lipid Carriers for Topical, Intranasal Needle-Free Anesthesia
Recent advances have been reported for needle-free local anesthesia in maxillary teeth by administering a nasal spray of tetracaine (TTC) and oxymetazoline, without causing pain, fear, and stress. This work aimed to assess whether a TTC-loaded hybrid system could reduce cytotoxicity, promote sustain...
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MDPI AG
2021
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oai:doaj.org-article:47407dbe31b5403ca40d04eb1642c9de2021-11-25T18:40:27ZMucoadhesive, Thermoreversible Hydrogel, Containing Tetracaine-Loaded Nanostructured Lipid Carriers for Topical, Intranasal Needle-Free Anesthesia10.3390/pharmaceutics131117601999-4923https://doaj.org/article/47407dbe31b5403ca40d04eb1642c9de2021-10-01T00:00:00Zhttps://www.mdpi.com/1999-4923/13/11/1760https://doaj.org/toc/1999-4923Recent advances have been reported for needle-free local anesthesia in maxillary teeth by administering a nasal spray of tetracaine (TTC) and oxymetazoline, without causing pain, fear, and stress. This work aimed to assess whether a TTC-loaded hybrid system could reduce cytotoxicity, promote sustained permeation, and increase the anesthetic efficacy of TTC for safe, effective, painless, and prolonged analgesia of the maxillary teeth in dental procedures. The hybrid system based on TTC (4%) encapsulated in nanostructured lipid carriers (NLC) and incorporated into a thermoreversible hydrogel of poloxamer 407 (TTC<sub>NLC-HG4%</sub>) displayed desirable rheological, mechanical, and mucoadhesive properties for topical application in the nasal cavity. Compared to control formulations, the use of TTC<sub>NLC-HG4%</sub> slowed in vitro permeation of the anesthetic across the nasal mucosa, maintained cytotoxicity against neuroblastoma cells, and provided a three-fold increase in analgesia duration, as observed using the tail-flick test in mice. The results obtained here open up perspectives for future clinical evaluation of the thermoreversible hybrid hydrogel, which contains TTC-loaded NLC, with the aim of creating an effective, topical, intranasal, needle-free anesthesia for use in dentistry.Giovana Maria Fioramonti CalixtoBruno Vilela MunizSimone R. CastroJaiza Samara Macena de AraujoKlinger de Souza AmorimLígia N. M. RibeiroLuiz Eduardo Nunes FerreiraDaniele Ribeiro de AraújoEneida de PaulaMichelle Franz-MontanMDPI AGarticlenanostructured lipid carriersthermoreversible hydrogelnasal administrationmucoadhesiontopical anesthesiatetracainePharmacy and materia medicaRS1-441ENPharmaceutics, Vol 13, Iss 1760, p 1760 (2021) |
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nanostructured lipid carriers thermoreversible hydrogel nasal administration mucoadhesion topical anesthesia tetracaine Pharmacy and materia medica RS1-441 |
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nanostructured lipid carriers thermoreversible hydrogel nasal administration mucoadhesion topical anesthesia tetracaine Pharmacy and materia medica RS1-441 Giovana Maria Fioramonti Calixto Bruno Vilela Muniz Simone R. Castro Jaiza Samara Macena de Araujo Klinger de Souza Amorim Lígia N. M. Ribeiro Luiz Eduardo Nunes Ferreira Daniele Ribeiro de Araújo Eneida de Paula Michelle Franz-Montan Mucoadhesive, Thermoreversible Hydrogel, Containing Tetracaine-Loaded Nanostructured Lipid Carriers for Topical, Intranasal Needle-Free Anesthesia |
description |
Recent advances have been reported for needle-free local anesthesia in maxillary teeth by administering a nasal spray of tetracaine (TTC) and oxymetazoline, without causing pain, fear, and stress. This work aimed to assess whether a TTC-loaded hybrid system could reduce cytotoxicity, promote sustained permeation, and increase the anesthetic efficacy of TTC for safe, effective, painless, and prolonged analgesia of the maxillary teeth in dental procedures. The hybrid system based on TTC (4%) encapsulated in nanostructured lipid carriers (NLC) and incorporated into a thermoreversible hydrogel of poloxamer 407 (TTC<sub>NLC-HG4%</sub>) displayed desirable rheological, mechanical, and mucoadhesive properties for topical application in the nasal cavity. Compared to control formulations, the use of TTC<sub>NLC-HG4%</sub> slowed in vitro permeation of the anesthetic across the nasal mucosa, maintained cytotoxicity against neuroblastoma cells, and provided a three-fold increase in analgesia duration, as observed using the tail-flick test in mice. The results obtained here open up perspectives for future clinical evaluation of the thermoreversible hybrid hydrogel, which contains TTC-loaded NLC, with the aim of creating an effective, topical, intranasal, needle-free anesthesia for use in dentistry. |
format |
article |
author |
Giovana Maria Fioramonti Calixto Bruno Vilela Muniz Simone R. Castro Jaiza Samara Macena de Araujo Klinger de Souza Amorim Lígia N. M. Ribeiro Luiz Eduardo Nunes Ferreira Daniele Ribeiro de Araújo Eneida de Paula Michelle Franz-Montan |
author_facet |
Giovana Maria Fioramonti Calixto Bruno Vilela Muniz Simone R. Castro Jaiza Samara Macena de Araujo Klinger de Souza Amorim Lígia N. M. Ribeiro Luiz Eduardo Nunes Ferreira Daniele Ribeiro de Araújo Eneida de Paula Michelle Franz-Montan |
author_sort |
Giovana Maria Fioramonti Calixto |
title |
Mucoadhesive, Thermoreversible Hydrogel, Containing Tetracaine-Loaded Nanostructured Lipid Carriers for Topical, Intranasal Needle-Free Anesthesia |
title_short |
Mucoadhesive, Thermoreversible Hydrogel, Containing Tetracaine-Loaded Nanostructured Lipid Carriers for Topical, Intranasal Needle-Free Anesthesia |
title_full |
Mucoadhesive, Thermoreversible Hydrogel, Containing Tetracaine-Loaded Nanostructured Lipid Carriers for Topical, Intranasal Needle-Free Anesthesia |
title_fullStr |
Mucoadhesive, Thermoreversible Hydrogel, Containing Tetracaine-Loaded Nanostructured Lipid Carriers for Topical, Intranasal Needle-Free Anesthesia |
title_full_unstemmed |
Mucoadhesive, Thermoreversible Hydrogel, Containing Tetracaine-Loaded Nanostructured Lipid Carriers for Topical, Intranasal Needle-Free Anesthesia |
title_sort |
mucoadhesive, thermoreversible hydrogel, containing tetracaine-loaded nanostructured lipid carriers for topical, intranasal needle-free anesthesia |
publisher |
MDPI AG |
publishDate |
2021 |
url |
https://doaj.org/article/47407dbe31b5403ca40d04eb1642c9de |
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