Bacterial adherence to self-reinforced polyglycolic acid and self-reinforced polylactic acid 96 urological spiral stents in vitro

被引：25

作者：

Pétas, A

Vuopio-Varkila, J

Siitonen, A

Välimaa, T

Talja, M

Taari, K

机构：

[1] Univ Helsinki, Cent Hosp, Dept Urol, FIN-00290 Helsinki, Finland

[2] Natl Publ Hlth Inst, Lab Gramposit Bacteria, Helsinki, Finland

[3] Natl Publ Hlth Inst, Lab Enter Pathogens, Helsinki, Finland

[4] Tampere Univ Technol, Inst Biomat, FIN-33101 Tampere, Finland

[5] Paijat Hame Cent Hosp Lahti, Dept Surg, Lahti, Finland

来源：

BIOMATERIALS | 1998年 / 19卷 / 7-9期

关键词：

biodegradable materials; bacterial adherence; urinary tract infection; stents;

D O I：

10.1016/S0142-9612(97)00171-3

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

The aim of this study was to evaluate the bacterial adherence to biodegradable self-reinforced polyglycolic acid (SR-PGA) and self-reinforced poly-DL-lactic acid (SR-PLA 96) spiral stents in vitro. They are used as temporary urethral stents in urology. Gold-plated metal wire, polyurethane and latex were used as controls. Materials were incubated up to 28 days in artificial urine, after which a bacterial suspension was added. After detaching by sonication the adhesive bacteria were analysed as colony forming units (CFUs) and by scanning electron microscopy (SEM) analysis, Adhesion was more significantly correlated to stent bacterial type than to the tested material in both assays. No encrustation was seen on SR-PGA or SR-PLA 96. SR-PGA and SR-PLA 96 had no effect on the bacterial growth. In conclusion, the bacterial properties are equally or more important than the material properties in the adhesion process. (C) 1998 Published by Elsevier Science Ltd. All rights reserved.

引用

页码：677 / 681

页数：5

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