Volume 109, Issue 5 pp. 682-694
Original Article

Influence of nano-hydroxyapatite coating implants on gene expression of osteogenic markers and micro-CT parameters. An in vivo study in diabetic rats

Paula Gabriela Faciola Pessôa de Oliveira

Paula Gabriela Faciola Pessôa de Oliveira

Department of Oral and Maxillofacial Surgery and Periodontology, FORP/USP, University of São Paulo, Ribeirão Preto, São Paulo, Brazil

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Mariana Sales de Melo Soares

Mariana Sales de Melo Soares

Department of Oral and Maxillofacial Surgery and Periodontology, FORP/USP, University of São Paulo, Ribeirão Preto, São Paulo, Brazil

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Adriana Maria Mariano Silveira e Souza

Adriana Maria Mariano Silveira e Souza

Department of Oral and Maxillofacial Surgery and Periodontology, FORP/USP, University of São Paulo, Ribeirão Preto, São Paulo, Brazil

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Mário Taba Jr

Mário Taba Jr

Department of Oral and Maxillofacial Surgery and Periodontology, FORP/USP, University of São Paulo, Ribeirão Preto, São Paulo, Brazil

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Daniela Bazan Palioto

Daniela Bazan Palioto

Department of Oral and Maxillofacial Surgery and Periodontology, FORP/USP, University of São Paulo, Ribeirão Preto, São Paulo, Brazil

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Michel Reis Messora

Michel Reis Messora

Department of Oral and Maxillofacial Surgery and Periodontology, FORP/USP, University of São Paulo, Ribeirão Preto, São Paulo, Brazil

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Bruna Ghiraldini

Bruna Ghiraldini

Paulista University, School of Dentistry, São Paulo, São Paulo, Brazil

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Felipe Anderson de Sousa Nunes

Felipe Anderson de Sousa Nunes

Department of Oral and Maxillofacial Surgery and Periodontology, FORP/USP, University of São Paulo, Ribeirão Preto, São Paulo, Brazil

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Sérgio Luís Scombatti de Souza

Corresponding Author

Sérgio Luís Scombatti de Souza

Department of Oral and Maxillofacial Surgery and Periodontology, FORP/USP, University of São Paulo, Ribeirão Preto, São Paulo, Brazil

Correspondence

Sérgio Luís Scombatti de Souza Departament of Oral & Maxillofacial Surgery and Periodontology School of Dentistry of Ribeirão Preto University of São Paulo Av do Café, s/n. 14040-904 Ribeirão Preto, SP, Brazil.

Email: [email protected]

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First published: 30 June 2020
Citations: 21

The authors have complete independence in the results and did not receive any kind of aid.

Funding information: National Council of Scientific and Technological Development (CNPq, Brazil), Grant/Award Number: Grant number: 446840/2014-9; State of Sao Paulo Research Foundation (FAPESP, Brazil), Grant/Award Numbers: 2015/09879-0, 2016/14584-2

Abstract

This study evaluated the response of a nano-hydroxyapatite coating implant through gene expression analysis (runt-related transcription factor 2 (Runx2), alkaline phosphatase (Alp), osteopontin (Opn), osteocalcin (Oc), receptor activator of nuclear factor-kappa B (Rank), receptor activator of nuclear factor-kappa B ligand (Rank-L), and osteoprotegerin (Opg)). Three-dimensional evaluation (percent bone volume (BV/TV); percent intersection surface (BIC); bone surface/volume ratio (BS/BV); and total porosity (To.Po)) were also analyzed. Mini implants were surgically placed in tibias of both healthy and diabetic rats. The animals were euthanized at 7 and 30 days. Evaluating all factors the relative expression of Rank showed that NANO surface presented the best results at 7 days (diabetic rats). Furthermore the levels of Runx2, Alp, Oc, and Opn suggest an increase in osteoblasts proliferation, especially in early stages of osseointegration. %BIC in healthy and diabetic (7 days) depicted statistically significant differences for NANO group. BV/TV, BS/BV and To.Po demonstrated higher values for NANO group in all evaluated time point and irrespective of systemic condition, but BS/BV 30 days (healthy rat) and 7 and 30 days (diabetic rat). Microtomographic and gene expression analyses have shown the benefits of nano-hydroxyapatite coated implants in promoting new bone formation in diabetic rats.

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