@misc{10481/91739, year = {2024}, month = {3}, url = {https://hdl.handle.net/10481/91739}, abstract = {Objective: The aim of this study was to detect and compare the tissular expression of neutrophil extracellular traps (NETs) in peri-implant and periodontal samples of patients with peri-implantitis, periodontitis, and controls. Materials and Methods: An observational study was performed on patients with peri-implantitis, periodontitis, and controls. Peri-implant and/or periodontal clinical examinations were performed on each participant. Tissue samples were collected during tooth/implant extraction for clinical reasons. Electron microscopy analysis, Picro-Sirius red staining, immunohistochemical (CD15), and immunofluorescence (citrullinated H3 and myeloperoxidase) techniques were performed to detect NETrelated structures and the degree of connective tissue destruction, between the study groups. Results: Sixty-four patients were included in the study: 28 peri-implantitis, 26 periodontitis, and 10 controls, with a total of 51 implants, 26 periodontal teeth, and 10 control teeth. Neutrophil release of nuclear content was observed in transmission electron microscopy. Immunohistochemical analysis showed a greater CD15 expression in both peri-implantitis and periodontitis compared to controls (p < 0.001), and peri-implantitis presented lower levels of connective tissue and collagen compared to both periodontitis (p = 0.044; p < 0.001) and controls (p < 0.001). Immunofluorescence showed greater citH3 expression in peri-implantitis than the one found in both periodontitis (p = 0.003) and controls (p = 0.048). Conclusions: A greater presence and involvement of neutrophils, as well as a greater connective tissue destruction were observed in cases of peri-implantitis. A higher expression of NET-related markers was found in mucosal samples of peri-implantitis compared to periodontitis and controls.}, organization = {Junta de Andalucía, Spain. Research Groups #CTS 583, #CTS-1028, and #CTS-138}, organization = {Universidad de Granada / CBUA (Funding for open access charge)}, publisher = {Wiley}, keywords = {Immunohistochemistry}, keywords = {Microscopy}, keywords = {Neutrophils}, title = {Detection and comparison of neutrophil extracellular traps in tissue samples of peri-implantitis, periodontitis, and healthy patients: A pilot study}, doi = {10.1111/cid.13325}, author = {Rasheed Al-Bakri, Sarmad Muayad and Magán Fernández, Antonio and Galindo Moreno, Pablo Antonio and O'Valle Ravassa, Francisco Javier and Martín Morales, Natividad and Padial Molina, Miguel and Mesa Aguado, Francisco Luis}, }