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In vitro and in vivo investigation of the influence of implant surface on the formation of bacterial biofilm in mammary implants.

Abstract：

BACKGROUND:Capsular contracture remains the most common complication following breast augmentation surgery, and evidence suggests that bacterial biofilm on the implant surface is responsible. The authors investigated whether the interaction of bacterial biofilm with implants independently determines progression to capsule formation. They also studied the rate of bacterial growth and adhesion to implants. METHODS:Sixteen adult female pigs had 121 breast implants inserted. Sixty-six implants-23 smooth and 43 textured-were inoculated with a human strain of Staphylococcus epidermidis and received no other treatment. After an average period of 19 weeks, Baker grading was performed and implants were retrieved. For the in vitro study, samples underwent both quantitative bacterial analysis and imaging using confocal laser scanning and scanning electron microscopy. RESULTS:At explantation, there was no significant difference (p = 1.0) in the presence of capsular contracture (Baker grade III and IV) between smooth (83 percent) and textured implants (84 percent). Biofilm was confirmed on 60 of the 66 capsules. Capsules from smooth and textured implants had the same number of infecting bacteria (textured: 3.01 × 10 bacteria/g; smooth: 3.00 × 10 bacteria/g). In vitro, the surface of textured implants showed 11-, 43-, and 72-fold more bacteria at 2, 6, and 24 hours, respectively, compared with smooth implants (p < 0.001). These findings were confirmed by imaging analysis. CONCLUSIONS:These results show that textured implants develop a significantly higher load of bacterial biofilm in comparison with smooth implants. Furthermore, in vivo, once a threshold of biofilm forms on either smooth or textured implant surfaces, there seems to be an equal propensity to progress to capsular contracture.

journal_name

Plast Reconstr Surg

journal_title

Plastic and reconstructive surgery

authors

Jacombs A,Tahir S,Hu H,Deva AK,Almatroudi A,Wessels WLF,Bradshaw DA,Vickery K

doi

10.1097/PRS.0000000000000020

subject

Has Abstract

pub_date

2014-04-01 00:00:00

pages

471e-480e

issue

eissn

0032-1052

issn

1529-4242

pii

00006534-201404000-00009

journal_volume

133

pub_type

杂志文章

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In vitro and in vivo investigation of the influence of implant surface on the formation of bacterial biofilm in mammary implants.