Publicaciones científicas

The effect of late infection and antibiotic treatment on capsular contracture in silicone breast implants: A rat model.

Miller KE (1), Hontanilla B (2), Cabello A (3), Marre D (1), Armendariz L (4), Leiva J (4).
(1) Department of Plastic and Reconstructive Surgery, Clinica Universidad de Navarra, Pamplona, Spain.
(2) Department of Plastic and Reconstructive Surgery, Clinica Universidad de Navarra, Pamplona, Spain.
(3) Department of Plastic and Reconstructive Surgery, Clinica Universidad de Navarra, Pamplona, Spain.
(4) Department of Microbiology, Clinica Universidad de Navarra, Pamplona, Spain.

Revista: Journal of Plastic, Reconsctructive & Aesthetic Surgery

Fecha: 01/01/2016

Microbiología Clínica

BACKGROUND

The effect of late infection on capsular contracture has yet to be established, leaving a gap in clinical guidelines for the treatment patients with breast implants. This trial is the first to assess if the treatment of these infections can reverse this effect in an in vivo rat model and whether late distant infections increase the incidence of capsular contracture.

MATERIALS AND METHODS

Three groups of female Wistar rats (n = 42) received two silicone implants in separate dorsal, subcutaneous pockets. All groups except control underwent injection of a human strain of methicillin-sensitive Staphylococcus aureus (MSSA) at least 30 days after implantation, allowing for physiologic capsule formation. The infection group received a peritoneal injection, inducing a transient bacteremia, the treated group received a course of antibiotics following bacterial inoculation, and a final group received no intervention and served as control.

RESULTS

Implants were removed 4 months after insertion, and capsules measured for thickness and sent for bacterial quantification. Compared to both the control and treated groups, capsule thickness in the infection group was statistically greater (p < 0.05), a difference not observed between treated and control groups. In addition, a statistically significant positive correlation was found between capsule thickness and bacterial count (R = 0.614, p < 0.01).

CONCLUSIONS

The difference in thickness between the control capsules and those from the infection group is an indication that bacterial contamination of a capsule from a remote late infection may increase the incidence of capsular contracture suggesting that treating late infections could in fact prevent capsular contracture.

CITA DEL ARTÍCULO  J Plast Reconstr Aesthet Surg. 2016 Jan;69(1):70-6. doi: 10.1016/j.bjps.2015.08.027. Epub 2015 Sep 6

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