title: [Adsorption of chondroitin sulfate-A to the surface of titanium].
abstract: To elucidate the adsorption mechanism of CS-A to the surface of titanium, 5 ml solutions of the CS-A were reacted with 2 g of native and 2 g of calcium-treated titanium powder for 48 h at 37 degrees C. Residual CS-A was detected by the carbazole elaborate method. The results showed that no CS-A attached to native titanium. Comparatively, titanium treated with calcium produced a significant adsorption of CS-A. At concentration of 60 micrograms/ml, the adsorption of CA-A to calcium-treated titanium powder attained the maximum, 83 micrograms/g. Only EDTA can liberate the bound CS-A from titanium surface. These findings suggest that calcium ion is necessary for the adsorption of CS-A to titanium.
authors.affiliation: Tianjin Stomatology Hospital, Tianjin 300041.
authors.forename: Hong
authors.initials: H
authors.lastname: Fan
authors.forename: Zhiqing
authors.initials: Z
authors.lastname: Chen
authors.forename: Ping
authors.initials: P
authors.lastname: Zhang
authors.forename: Jing
authors.initials: J
authors.lastname: Qiu
mesh_terms: D000327:Adsorption; D002118:Calcium; D002809:Chondroitin Sulfates / Q000494:pharmacology*; D055672:Static Electricity; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry
chemical_list: D002809:Chondroitin Sulfates; D014025:Titanium; D002118:Calcium