Chitosan (QT) is a biopolymer that has been used in widely used in bone tissue engineering applications, demonstrating great potential for that purpose. Therefore, the present study aims to develop an in situ crosslinking hydrogel system, composed of chitosan and hydroxyapatite (HAP). Briefly, chitosan was modified, using carbodiimide chemistry, with lactobionic and azidobenzoic acid to make it soluble at physiological pH and photo-crosslinkable, respectively. The modified chitosan was mixed with HAP, in different proportions, and later exposed to UV light, yielding hydrogels. Mesenchymal stem cells, from rat bone marrow, were seeded onto the hydrogels and cultured for 4, 10 and 16 days, under osteogenic and non-osteogenic conditions. Through cell proliferation and alkaline phosphatase activity assays, and confocal microscopy, it was observed that the majority of formulations supported cell adhesion and proliferation, and a significant early osteogenic differentiation in formulations 70:30 and 50:50, QT:HAP. According to these results, the proposed photo-crosslinking system has potential for tissue engineering applications, and further specific studies are proposed for cell differentiation.
La investigación realizó el estado del arte sobre menores infractores de la ley penal para proponer una política preventiva en una región peruana. La investigación se desarrolló en dos etapas. Primero se realizó un análisis bibliométrico de publicaciones científicas sobre menores infractores de la ley penal y luego una revisión analítica de la literatura relevante sobre la temática. Se ha tomado interés sobre el tema de menores infractores a partir del año 1974. Se identificaron 257 registros, los mismos que se sometieron al análisis bibliométrico, procesándose la data mediante el programa VOS Viewer y el análisis de co-ocurrencias. Los resultados arrojan que la mayor investigación sobre el tema se da en Estados Unidos y Europa, habiendo escasez de publicaciones en Latinoamérica, además que el 77 % de estudios han sido publicados en artículos y en un 18% en revisiones y editoriales. Se identificó altas tasas de menores infractores en el contexto geográfico de estudio. Finalmente, se propusieron algunos criterios y estrategias de políticas públicas preventivas.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
customersupport@researchsolutions.com
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.