| Journal: | Brazilian Journal of Pharmaceutical Sciences |
| Database: | PERIÓDICA |
| System number: | 000452219 |
| ISSN: | 1984-8250 |
| Authors: | Castro, Matheus Augusto de1 Cunha, Gabriella Maria Fernandes2 Andrade, Gracielle Ferreira3 Yoshida, Maria Irene4 Faria, Ana Luiza de5 Silva Cunha, Armando1 |
| Institutions: | 1Universidade Federal de Minas Gerais, Faculdade de Farmacia, Belo Horizonte, Minas Gerais. Brasil 2Stanford University, School of Medicine, Stanford, California. Estados Unidos de América 3Universidade Federal do Espirito Santo, Faculdade de Ciencias Farmaceuticas, Vitoria, Espirito Santo. Brasil 4Universidade Federal de Minas Gerais, Instituto de Ciencias Exatas, Belo Horizonte, Minas Gerais. Brasil 5National University of Ireland, Galway School of Chemistry, Galway. Irlanda |
| Year: | 2022 |
| Volumen: | 58 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | In the hospital environment, postoperative pain is a common occurrence that impairs patient recovery and rehabilitation and lengthens hospitalization time. Racemic bupivacaine hydrochloride (CBV) and Novabupi® (NBV) (S (-) 75% R (+) 25% bupivacaine hydrochloride) are two examples of local anesthetics used in pain management, the latter being an alternative with less deleterious effects. In the present study, biodegradable implants were developed using Poly(L-lactide-co-glycolide) through a hot molding technique, evaluating their physicochemical properties and their in vitro drug release. Different proportions of drugs and polymer were tested, and the proportion of 25%:75% was the most stable for molding the implants. Thermal and spectrometric analyses were performed, and they revealed no unwanted chemical interactions between drugs and polymer. They also confirmed that heating and freeze-drying used for manufacturing did not interfere with stability. The in vitro release results revealed drugs sustained release, reaching 64% for NBV-PLGA and 52% for CBV-PLGA up to 30 days. The drug release mechanism was confirmed by microscopy, which involved pores formation and polymeric erosion, visualized in the first 72 h of the in vitro release test. These findings suggest that the developed implants are interesting alternatives to control postoperative pain efficiently |
| Disciplines: | Química, Medicina |
| Keyword: | Química farmacéutica, Liberación de fármacos, Dolor postoperatorio, Bupivacaína, Implantes biodegradables |
| Keyword: | Medicinal chemistry, Drug delivery, Postoperative pain, Bupivacaine, Biodegradable implants |
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