Mesquita CJGD, Guimarães SB, Leite Filho JAD, Maciel FS, Rocha JLDC, Leite JAD. Effect of propranolol on capsular reaction around silicone implants in guinea pigs.
Acta Cir Bras 2015;
30:24-33. [PMID:
25627268 DOI:
10.1590/s0102-86502015001000004]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Accepted: 12/18/2014] [Indexed: 03/20/2023] Open
Abstract
PURPOSE
To evaluate the effect of propranolol on capsular architecture around silicone implants by measuring the inflammation, capsular thickness, and collagen fiber density, using a guinea pig experimental model.
METHODS
Thirty six adult male guinea pigs randomly divided into two groups (n=18) were used. Each one received a silicone implant with textured-surface. The capsular tissue around implants from untreated or treated animals with the beta-adrenoceptor antagonist propranolol (10 mg/kg, dissolved in daily water) were analyzed for inflammation by histological scoring, capsular thickness by computerized histometry, and collagen fibers type I and Type III density by picrosirius polarization at different time points (7, 14 or 21 days after silicone implantation).
RESULTS
Propranolol treatment reduced inflammation and impaired capsular thickness and delayed collagen maturation around the textured implant.
CONCLUSION
Propranolol reduces the risk of developing capsular contracture around silicone implants with textured surface.
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