Validation of the CDC Biofilm Reactor as a Dynamic Model for Assessment of Encrustation Formation on Urological Device Materials

被引:38
作者
Gilmore, Brendan F. [1 ]
Hamill, Turlough M. [1 ]
Jones, David S. [1 ]
Gorman, Sean P. [1 ]
机构
[1] Queens Univ Belfast, Sch Pharm, Ctr Med Biol, Belfast BT9 7BL, Antrim, North Ireland
基金
英国生物技术与生命科学研究理事会;
关键词
urinary encrustation; CDC biofilm reactor; biomaterials; struvite; hydroxyapatite; Proteus mirabilis; urease; UREASE-INDUCED CRYSTALLIZATION; MAGNESIUM AMMONIUM PHOSPHATE; IN-VITRO; URETHRAL CATHETERS; HUMAN-URINE; BIOMATERIAL ENCRUSTATION; SYNTHETIC URINE; URETERAL STENTS; STONE FORMATION; STRUVITE;
D O I
10.1002/jbm.b.31567
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
Contemporary medical science is reliant upon the rational selection and utilization of devices, and therefore, an increasing need has developed for in vitro systems aimed at replicating the conditions to which urological devices will be subjected to during their use in vivo. We report the development and validation of a novel continuous flow encrustation model based on the commercially available CDC biofilm reactor. Proteus mirabilis-induced encrustation formation on test biomaterial sections under varying experimental parameters was analyzed by X-ray diffraction, infrared- and Raman spectroscopy and by scanning electron microscopy. The model system produced encrusted deposits similar to those observed in archived clinical samples. Results obtained for the system are highly reproducible with encrustation being rapidly deposited on test biomaterial sections. This model will have utility in the rapid screening of encrustation behavior of biomaterials for use in urological applications. (C) 2010 Wiley Periodicals. Inc. J Biomed Mater Res Part B: Appl Biomater 93B: 128-140, 2010
引用
收藏
页码:128 / 140
页数:13
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