Intratunical injection of autologous adipose stromal vascular fraction reduces collagen III expression in a rat model of chronic penile fibrosis

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Previous studies have shown that the injection of adipose stem cells and stromal vascular fraction(SVF) into the tunica albuginea (TA) during the inflammatory phase in a rat model of Peyronie’s disease(PD) prevented the development of TA fibrosis. Our aim was to investigate whether local injection of SVF can reduce established fibrosis in a rat model of chronic phase of PD. Eighteen-male 12-wk-old Sprague-Dawley rats were divided in three equal groups: sham, PD without treatment (PD) and PD treated with SVF(PD-SVF). Sham rats underwent 2 injections of vehicle into the TA one month apart. PD rats underwent TGF-β1 injection and injection of vehicle one month later. PD-SVF rats underwent TGF-β1 injection followed by SVF (1-million cells) one month later. One month after the last treatment, the animals, n = 6 rats per group, underwent measurement of intracorporal and mean arterial pressure during electrostimulation of the cavernous nerve. Following euthanasia, penises were harvested for in-vitro study. Erectile function was not statistically significantly different between groups. PD animals developed subtunical areas of fibrosis and elastosis with upregulation of collagen III protein. These fibrotic changes were reversed after injection of SVF. We provide evidence that local injection of SVF reverses TA fibrosis in a rat model of chronic phase of PD.


  • The Trauma and Reconstructive Urology Working Party of the European Association of Urology (EAU) Young Academic Urologists (YAU)
  • Lukman Hakim
  • Salvatore Fiorenzo
  • Petter Hedlund
  • Francesco Montorsi
  • Trinity J. Bivalacqua
  • Dirk De Ridder
  • Emmanuel Weyne
  • David Ralph
  • Giulio Garaffa
  • Asif Muneer
  • Steven Joniau
  • Maarten Albersen
  • Fabio Castiglione
Enheter & grupper
Externa organisationer
  • Catholic University of Leuven
  • Dr. Soetomo Hospital
  • Linköping University
  • Johns Hopkins Hospital
  • Arilangga University
  • University of Palermo
  • San Raffaele Hospital
  • University College London Hospital

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Reproduktionsmedicin och gynekologi
  • Urologi och njurmedicin
TidskriftInternational Journal of Impotence Research
StatusPublished - 2019 apr 15
Peer review utfördJa