Electrical stimulation therapy and rotary jet-spinning scaffold to treat bone defects.

Autor: Meneghetti DH; Graduate Program in Biomedical Sciences, University Center of Hermínio Ometto Foundation, Araras, Brazil., Bagne L; Graduate Program in Biomedical Sciences, University Center of Hermínio Ometto Foundation, Araras, Brazil., de Andrade Pinto SA; Faculty of Mechanical Engineering, University of Campinas, Campinas, Brazil., de Carvalho Zavaglia CA; Faculty of Mechanical Engineering, University of Campinas, Campinas, Brazil., Amaral MEC; Graduate Program in Biomedical Sciences, University Center of Hermínio Ometto Foundation, Araras, Brazil., Esquisatto MAM; Graduate Program in Biomedical Sciences, University Center of Hermínio Ometto Foundation, Araras, Brazil., Dos Santos GMT; Graduate Program in Biomedical Sciences, University Center of Hermínio Ometto Foundation, Araras, Brazil., de Andrade TAM; Graduate Program in Biomedical Sciences, University Center of Hermínio Ometto Foundation, Araras, Brazil., Santamaria M Jr; Graduate Program in Biomedical Sciences, University Center of Hermínio Ometto Foundation, Araras, Brazil.; Faculty of Mechanical Engineering, University of Campinas, Campinas, Brazil.; Graduate Program in Orthodontics, University Center of Hermínio Ometto Foundation, Araras, Brazil., Caetano GF; Graduate Program in Biomedical Sciences, University Center of Hermínio Ometto Foundation, Araras, Brazil., de Aro AA; Graduate Program in Biomedical Sciences, University Center of Hermínio Ometto Foundation, Araras, Brazil., Mendonça FAS; Graduate Program in Biomedical Sciences, University Center of Hermínio Ometto Foundation, Araras, Brazil.
Jazyk: angličtina
Zdroj: Anatomical record (Hoboken, N.J. : 2007) [Anat Rec (Hoboken)] 2023 Jan; Vol. 306 (1), pp. 79-91. Date of Electronic Publication: 2022 May 24.
DOI: 10.1002/ar.24994
Abstrakt: The combination of electrical stimulation (ES) and bone tissue engineering (BTE) has been successful in treatments of bone regeneration. This study evaluated the effects of ES combined with PCL + β-TCP 5% scaffolds obtained by rotary jet spinning (RJS) in the regeneration of bone defects in the calvaria of Wistar rats. We used 120 animals with induced bone defects divided into 4 groups (n = 30): (C) without treatment; (S) with PCL+ β-TCP 5% scaffold; (ES) treated with ES (10 μA/5 min); (ES + S) with PCL + β-TCP 5% scaffold. The ES occurred twice a week during the entire experimental period. Cell viability (in vitro: Days 3 and 7) and histomorphometric, histochemical, and immunohistochemical (in vivo; Days 30, 60, and 90) analysis were performed. In vitro, ES + S increased cell viability after Day 7 of incubation. In vivo, it was observed modulation of inflammatory cells in ES therapy, which also promoted blood vessels proliferation, and increase of collagen. Moreover, ES therapy played a role in osteogenesis by decreasing ligand kappa B nuclear factor-TNFSF11 (RANKL), increasing alkaline phosphatase (ALP), and decreasing the tartarate-resistant acid phosphatase. The combination of ES with RJS scaffolds may be a promising strategy for bone defects regeneration, since the therapy controlled inflammation, favored blood vessels proliferation, and osteogenesis, which are important processes in bone remodeling.
(© 2022 American Association for Anatomy.)
Databáze: MEDLINE
Externí odkaz: