Tissue Remodeling After Implantation with Polymethylmethacrylate: An Experimental Study in Mice.

Autor: Milhomem AC; Tropical Medicine and Public Health Post-graduation programme, Tropical Pathology and Public Health Institute, Federal University of Goias, Goiania, Goias, Brazil., de Souza Jorge IM; Tropical Medicine and Public Health Post-graduation programme, Tropical Pathology and Public Health Institute, Federal University of Goias, Goiania, Goias, Brazil., Dos Santos Arruda F; Tropical Medicine and Public Health Post-graduation programme, Tropical Pathology and Public Health Institute, Federal University of Goias, Goiania, Goias, Brazil., Tomé FD; Tropical Medicine and Public Health Post-graduation programme, Tropical Pathology and Public Health Institute, Federal University of Goias, Goiania, Goias, Brazil., da Costa EL; Bioplastia Brasil, Goiania, Goias, Brazil., Vinaud MC; Tropical Pathology and Public Health Institute, Federal University of Goias, Rua 235 s/n, Setor Leste Universitário, Goiania, Goias, CEP: 74605-050, Brazil., Pereira JX; Tropical Pathology and Public Health Institute, Federal University of Goias, Rua 235 s/n, Setor Leste Universitário, Goiania, Goias, CEP: 74605-050, Brazil., de Souza Lino Júnior R; Tropical Pathology and Public Health Institute, Federal University of Goias, Rua 235 s/n, Setor Leste Universitário, Goiania, Goias, CEP: 74605-050, Brazil. ruy@ufg.br.
Jazyk: angličtina
Zdroj: Aesthetic plastic surgery [Aesthetic Plast Surg] 2023 Jun; Vol. 47 (3), pp. 1205-1216. Date of Electronic Publication: 2022 Nov 23.
DOI: 10.1007/s00266-022-03179-w
Abstrakt: Polymethylmethacrylate (PMMA) is a filler used for aesthetic and/or repair purposes. The response to the implantation of biomaterials varies according to factors related to the patient, the professional responsible for the application and the material used. In vitro and in vivo experimental models have been used to study aspects such as the organism/biomaterial interface and the role of macrophages, dendritic cells and neutrophils. This study aimed to characterize the inflammatory reactions related to polymer concentration, implantation depth and exposure time. Different concentrations of PMMA were implanted in different anatomical planes in mice. The consequences of contact with PMMA, from structural changes to the inflammatory characteristic of tissue damage, were histologically evaluated. The implantation interfered in the morphological structure of the region where it was implanted, expanding it and due to the inflammatory reaction generated, by the presence of the vehicle in the initial phase and by the collagen produced in the chronic phase. The 30% concentration of PMMA induced a greater presence of foreign body giant cells both subcutaneously, at 7, 30 and 90 days after implantation (DAI), and intramuscular at 30DAI. Tissue remodeling was more expressive in the subcutaneous region with significant density of the extracellular matrix at 90DAI. In conclusion, the foreign body reaction resulting from the implantation process acquires different characteristics depending on the anatomical plane and the concentration of implanted product, where the more superficial the implantation plane, the greater the inflammatory reaction. Moreover, PMMA concentration and the depth of implantation did not influence the collagen production.No Level Assigned This journal requires that authors assign a level of evidence to each submission to which Evidence-Based Medicine rankings are applicable. This excludes Review Articles, Book Reviews, and manuscripts that concern Basic Science, Animal Studies, Cadaver Studies, and Experimental Studies. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors https://www.springer.com/00266.
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Databáze: MEDLINE
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