Histopathologic response to highly purified liquid silicone injected intradermally in rats' skin.

Abstract:

BACKGROUND:This study aimed to assess and compare the tissue response to small- and large-volume injections of pure liquid silicone in rats. METHODS:The study used 25 Sprague-Dawley rats. Two different injection sites were determined for a single rat, and 5000 centistoke liquid silicone was injected subdermally using 0.2-0.3 ml (small volume) and 1 ml (large volume) injections. After the injections, 15 animals were killed at 4 weeks and 10 animals at 10 weeks. Tissue responses were evaluated under a light microscope. RESULTS:At week 4, the numbers of lymphocytes and neutrophils were higher in the small-volume injection group. At week 10, the number of neutrophils decreased, and the numbers of macrophages and foreign body giant cells increased in the small-volume injection group, whereas the intensity and type of infiltrate in the large-volume injection group did not change significantly. The thickness of the fibrous capsule was greater in large-volume injection group at weeks 4 and 10. The thickness of the fibrous capsule did not change significantly in either group through time. CONCLUSIONS:Purified high-density liquid injectable silicone causes a low-grade and well-tolerated inflammatory response during the long term and can be used when given as small-volume injections.

journal_name

Aesthetic Plast Surg

authors

Cakmak O,Turkoz HK,Polat S,Serin GM,Hizal E,Tanyeri H

doi

10.1007/s00266-011-9657-4

subject

Has Abstract

pub_date

2011-08-01 00:00:00

pages

538-44

issue

4

eissn

0364-216X

issn

1432-5241

journal_volume

35

pub_type

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