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2017 ; 11
(11
): E441-E445
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The histopathological effects of intracavernosal mitomycin-C injection in a rat
Peyronie s disease model
#MMPMID29072564
Kaya E
; Kibar Y
; Yilmaz S
; Ozcan A
; Kopru B
; Ebiloglu T
; Irkilata HC
Can Urol Assoc J
2017[Nov]; 11
(11
): E441-E445
PMID29072564
show ga
INTRODUCTION: We aimed to evaluate whether or not mitomycin-C (MMC) has an
antifibrotic effect on transforming growth factor-beta (TGF-?)-induced Peyronie's
disease (PD) in a rat model. METHODS: Eighteen 12-week-old male Sprague-Dawley
rats were divided into three groups: Group 1=TGF-?1 (n=7); Group 2=TGF-?1+MMC
(n=7); and Group 3=Sham group (0.25 ml bovine serum albumin injected) (n=4). All
groups were sacrificed on the sixth week of the procedure and their penises were
excised. All penis specimens were evaluated semi-quantitatively and
quantitatively with histochemical, immunohistochemistry, and image analysis.
RESULTS: Both Group 1 and Group 2 had significantly higher fibrosis scores and
lower elastic fibers in both outer surface of tunica albuginea (TA) and
subsinusoidal area compared with Group 3. When compared with Group 1, the amount
of collagen was significantly decreased in Group 2. Intracavernosal MMC injection
(Group 2) ended up with lower elastic fibers when compared with Group 1.
According to the quantitative analyses, when compared with Groups 1 and 3, lower
dorsal, ventral, and trabecular thickening values were seen in Group 2. These
parameters were only statistically significant when compared with Group 1,
suggesting the antifibrotic effect of TGF-?1-induced fibrosis. Both Groups 1 and
2 showed lower decorin staining levels in subsinusoidal areas of tunica albuginea
(SATA) and subsinusoidal areas of trabecular wall (SATW) when compared with Group
3. The statistically significant difference was only detected between Group 1 and
Group 3. CONCLUSIONS: Our study demonstrates the antifibrotic effects of MMC on
PD. Further clinical studies are necessary to make inferences regarding its
clinical use.