LONG-TERM STABILITY OF HEPARIN-SURFACE-MODIFIED INTRAOCULAR LENSES INVIVO

被引:16
作者
LARSSON, R [1 ]
SELEN, G [1 ]
FORMGREN, B [1 ]
HOLST, A [1 ]
机构
[1] KABI PHARM THERAPEUT AB,UPPSALA,SWEDEN
关键词
HEPARIN SURFACE MODIFICATION; IMPLANTATION; INTRAOCULAR LENS; RABBIT; STABILITY;
D O I
10.1016/S0886-3350(13)80901-7
中图分类号
R77 [眼科学];
学科分类号
100212 ;
摘要
In vivo long-term stability of intraocular lens surfaces, modified by immobilized heparin, was studied. Lenses were implanted in the anterior chamber of rabbits and analyzed for surface concentration of heparin after varying periods of time up to two years. A new method using adsorption of 125iodine-labeled protamine was developed for quantitative measurements of immobilized heparin. Another assay, based on a monoclonal antibody against heparin, was also included. The study showed that surface-immobilized heparin did not degrade or desorb to any measurable degree during a two-year follow-up.
引用
收藏
页码:247 / 251
页数:5
相关论文
共 6 条
[1]  
Fagerholm P, Bjorklund H, Holmberg A, Et al., Heparin surface modified lenses implanted in the monkey eye, J Cataract Refract Surg, 15, pp. 485-490, (1989)
[2]  
Spangberg M, Kihlstrom I, Bjorklund H, Et al., Improved biocompatibility of intraocular lenses by heparin surface modification: a 12-month implantation study in monkeys, J Cataract Refract Surg, 16, pp. 170-177, (1990)
[3]  
Ygge J, Wenzel M, Philipson B, Fagerholm P, Cellular reactions on heparin surface-modified versus regular PMMA lenses during the first postoperative month: a double-masked and randomized study using specular microphotography, Ophthalmology, 97, pp. 1216-1223, (1990)
[4]  
Larm O, Larsson R, Olsson P, A new non-thrombogenic surface prepared by selective covalent binding of heparin via a modified reducing terminal residue, Biomater Med Devices Artif Organs, 11, pp. 161-173, (1983)
[5]  
Larsson R, Selen G, Bjorklund H, Fagerholm P, Intraocular PMMA lenses modified with surface-immobilized heparin: evaluation of biocompatibility in vitro and in vivo, Biomaterials, 10, pp. 511-516, (1989)
[6]  
Pejler G, Lindahl U, Larm O, Et al., Monoclonal antibodies specific for oligosaccharides prepared by partial nitrous acid deamination of heparin, J Biol Chem, 263, pp. 5197-5201, (1988)