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The comparison of the effect of phenylephrine and epinephrine on penile spongy tissue in rats after experimental hypospadias surgery: a quantitative stereological study

Authors
  • Shirazi, Mehdi1, 2
  • Rajabalian, Mohammad-Bagher1
  • Noorafshan, Ali2, 3
  • Karbalay-Doust, Saied2, 3
  • Jahanabadi, Zahra1
  • Ahmed, Faisal1
  • 1 Shiraz University of Medical Sciences, Department of Urology, Shiraz, Iran , Shiraz (Iran)
  • 2 Shiraz University of Medical Sciences, Histomorphometry and Stereology Research Center, Zand Ave., Shiraz, 71348-45794, Iran , Shiraz (Iran)
  • 3 School of Medicine, Shiraz University of Medical Sciences, Anatomy Department, Shiraz, Iran , Shiraz (Iran)
Type
Published Article
Journal
BMC Urology
Publisher
Springer (Biomed Central Ltd.)
Publication Date
Jun 20, 2019
Volume
19
Issue
1
Identifiers
DOI: 10.1186/s12894-019-0483-3
Source
Springer Nature
Keywords
License
Green

Abstract

BackgroundMany factors including vasoconstrictor agents can interfere with wound healing process. This study aimed to compare the histopathological outcome of injection of two sympathomimetic drugs used during urologic surgery, including phenylephrine and epinephrine, on the structure of spongy tissue and urethra in a rat model of experimental hypospadias repair using stereological methods.MethodsMale rats were allocated into three groups. The first group underwent surgery without using any agents. The second and third groups underwent surgery with diluted phenylephrine (1:5000) and diluted epinephrine (1:100000) injection in the urethral plate before operation, respectively. Quantitative histological evaluation of all penises was performed after 3 weeks.ResultsThe results indicated no significant differences among the three groups regarding the vessels and urethral lumen and epithelium. However, the volumes of the spongy tissue and collagen bundles and the number of fibroblasts were significantly higher (35–55%) in surgery + phenylephrine and surgery + epinephrine groups in comparison to the surgery group (p < 0.05), with no preferences.ConclusionsHypospadias repair using phenylephrine and epinephrine injection showed no adverse effects. Furthermore, they might lead to better postoperative structural outcomes without any preferences. However, further experimental and human studies are required to draw a firm conclusion.

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