Abstract
Rat calvarial osteoblasts were grown in porous chitosan sponges fabricated by freeze drying. The prepared chitosan sponges had a porous structure with a 100-200 μm pore diameter, which allowed cell proliferation. Cell density, alkaline phosphatase activity and calcium deposition were monitored for up to 56 d culture. Cell numbers were 4 × 106 (day 1), 11 × 106 (day 28) and 12 × 106 (day 56) per g sponge. Calcium depositions were 9 (day 1), 40 (day 28) and 48 (day 56) μg per sponge. Histological results corroborated that bone formation within the sponges had occurred. These results show that chitosan sponges can be used as effective scaffolding materials for tissue engineered bone formation in vitro.
Original language | English |
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Pages (from-to) | 1037-1041 |
Number of pages | 5 |
Journal | Biotechnology Letters |
Volume | 26 |
Issue number | 13 |
DOIs | |
State | Published - Jun 2004 |
Bibliographical note
Funding Information:This work was supported by a grant from the Ministry of Science and Technology (MOST), #98-N1-02-01-A-13, Republic of Korea.
Keywords
- bone formation
- chitosan sponges
- osteoblast
- tissue engineering