Chemical-Physical Characterization and in vitro Preliminary Biological Assessment of Hyaluronic Acid Benzyl Ester-Hydroxyapatite. Composite (Articolo in rivista)

Type
Label
  • Chemical-Physical Characterization and in vitro Preliminary Biological Assessment of Hyaluronic Acid Benzyl Ester-Hydroxyapatite. Composite (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Alternative label
  • C. Giordano, V. Sanginario, L. Ambrosio, L. Di Silvio, M. Santin (2006)
    Chemical-Physical Characterization and in vitro Preliminary Biological Assessment of Hyaluronic Acid Benzyl Ester-Hydroxyapatite. Composite
    in Journal of biomaterials applications
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • C. Giordano, V. Sanginario, L. Ambrosio, L. Di Silvio, M. Santin (literal)
Pagina inizio
  • 237 (literal)
Pagina fine
  • 253 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 20 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • C. Giordano, Politecnico di Milano, Milano M. Santin, University of Brighton, UK L. Di Silvio, King's College and Guy's Hospital, London, UK (literal)
Titolo
  • Chemical-Physical Characterization and in vitro Preliminary Biological Assessment of Hyaluronic Acid Benzyl Ester-Hydroxyapatite. Composite (literal)
Abstract
  • HYAFF11 is a biocompatible, biodegradable benzyl ester of hyaluronic acid. However, in order to use it for orthopedic application, its mechanical performance needs to be improved. In this study, a novel composite based on HYAFF11 polymer matrix reinforced with hydroxylapatite (HA) has been developed. Its advantage is having a similar component of the mineral phase of bone resulting in favorable osteoconductive properties. The present study has examined the compressive mechanical and surface chemical–physical properties of the novel HYAFF11–HA composite. Preliminary biological investigations, including pH and cytotoxicity studies of the material extracts, have also been performed using an in vitro primary human osteoblast-like cell model. Moreover, protein, especially fibronectin adsorption has been investigated following incubation in culture medium and human plasma. The results show a grainy surface topography composed mainly of C, P,and Ca, with a Ca/P atomic ratio indicating HA on the composite surface. Mechanical analysis shows an improvement of the compressive properties of HYAFF11 matrix, both in the dry and swollen states, with values in the range of that of spongy bone. No cytotoxic effects and no inhibition of cell proliferation have been observed in the presence of the material extracts with pH values within acceptable ranges for cell vitality. Protein studies reveal a similar pattern, but a higher amount of fibronectin following incubation in human plasma when compared with culture medium. The results show that the novel HYAFF11–HA composite shows a great potential for application in orthopedic fields, especially as vertebral trabecular bone substitute. (literal)
Prodotto di
Autore CNR
Insieme di parole chiave

Incoming links:


Prodotto
Autore CNR di
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
Insieme di parole chiave di
data.CNR.it