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Nanocements produced from mesoporous bioactive glass nanoparticles.
Kang, Min Sil; Lee, Na-Hyun; Singh, Rajendra K; Mandakhbayar, Nandin; Perez, Roman A; Lee, Jung-Hwan; Kim, Hae-Won.
Afiliação
  • Kang MS; Institute of Tissue Regeneration Engineering, Dankook University, Cheonan, 330-714, Republic of Korea; Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, 330-714, Republic of Korea.
  • Lee NH; Institute of Tissue Regeneration Engineering, Dankook University, Cheonan, 330-714, Republic of Korea; Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, 330-714, Republic of Korea.
  • Singh RK; Institute of Tissue Regeneration Engineering, Dankook University, Cheonan, 330-714, Republic of Korea; Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, 330-714, Republic of Korea.
  • Mandakhbayar N; Institute of Tissue Regeneration Engineering, Dankook University, Cheonan, 330-714, Republic of Korea; Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, 330-714, Republic of Korea.
  • Perez RA; Institute of Tissue Regeneration Engineering, Dankook University, Cheonan, 330-714, Republic of Korea; Regenerative Medicine Research Institute, Universitat Internacional de Catalunya Barcelona 08017, Spain.
  • Lee JH; Institute of Tissue Regeneration Engineering, Dankook University, Cheonan, 330-714, Republic of Korea; Department of Biomaterials Science, College of Dentistry, Dankook University, Cheonan, 330-714, Republic of Korea.
  • Kim HW; Institute of Tissue Regeneration Engineering, Dankook University, Cheonan, 330-714, Republic of Korea; Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan, 330-714, Republic of Korea; Department of Biomaterials Science,
Biomaterials ; 162: 183-199, 2018 04.
Article em En | MEDLINE | ID: mdl-29448144
ABSTRACT
Biomedical cements are considered promising injectable materials for bone repair and regeneration. Calcium phosphate composition sized with tens of micrometers is currently one of the major powder forms. Here we report a unique cement form made from mesoporous bioactive glass nanoparticles (BGn). The nanopowder could harden in reaction with aqueous solution at powder-to-liquid ratios as low as 0.4-0.5 (vs. 2.0-3.0 for conventional calcium phosphate cement CPC). The cementation mechanism investigated from TEM, XRD, FT-IR, XPS, and NMR analyses was demonstrated to be the ionic (Si and Ca) dissolution and then reprecipitation to form Si-Ca-(P) based amorphous nano-islands that could network the particles. The nanopowder-derived nanocement exhibited high surface area (78.7 m2/g); approximately 9 times higher than conventional CPC. The immersion of nanocement in simulated body fluid produced apatite nanocrystallites with ultrafine size of 10 nm (vs. 55 nm in CPC). The ultrafine nanocement adsorbed protein molecules (particularly positive charged proteins) at substantial levels; approximately 160 times higher than CPC. The nanocement released Si and Ca ions continuously over the test period of 2 weeks; the Si release was unique in nanocement whereas the Ca release was in a similar range to that observed in CPC. The release of ions significantly stimulated the responses of cells studied (rMSCs and HUVECs). The viability and osteogenesis of rMSCs were significantly enhanced by the nanocement ionic extracts. Furthermore, the in vitro tubular networking of HUVECs was improved by the nanocement ionic extracts. The in vivo neo-blood vessel formation in CAM model was significantly higher by the nanocement implant when compared with the CPC counterpart, implying the Si ion release might play a significant role in pro-angiogenesis. Furthermore, the early bone forming response of the nanocement, based on the implantation in a rat calvarial bone defect, demonstrated a sign of osteoinductivity along with excellent osteocondution and bone matrix formation. Although more studies remain to confirm the potential of nanocement, some of the intriguing physico-chemical properties and the biological responses reported herein support the promise of the new 'nanopowder-based nanocement' for hard tissue repair and regeneration.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Nanopartículas Limite: Humans Idioma: En Revista: Biomaterials Ano de publicação: 2018 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Nanopartículas Limite: Humans Idioma: En Revista: Biomaterials Ano de publicação: 2018 Tipo de documento: Article