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Bulletin of Experimental Biology and Medicine

, Volume 166, Issue 2, pp 268–273 | Cite as

Ectopic Organogenesis after Allotransplantation of Freshly Removed or Cryopreserved Neonatal Testicle under the Renal Capsule in Rats

  • V. I. KirpatovskiiEmail author
  • G. D. Efremov
  • E. V. Frolova
MORPHOLOGY AND PATHOMORPHOLOGY
  • 16 Downloads

In experiments on white outbred male rats, a freshly removed (20 experiments) or cryopreserved (10 experiments) testicle from newborn rats (1-2 days after birth) was transplanted under the renal capsule after bilateral orchiectomy. In all experiments with transplantation of freshly removed testicle, it was engrafted. In 3 months, histological examination revealed the formation of mature seminiferous tubules, but spermatogenesis was blocked at the stage of spermatogonia; groups of proliferating Leydig cells in the loose connective tissue between the tubules were also seen. In 6 and 12 months, the status of the seminiferous tubules remained unchanged, but structures typical of the epididymis and developing vas deferens were revealed. The number of proliferating Leydig cells increased. The initially low testosterone concentration in the blood of castrated males increased significantly as soon as in 1 month after transplantation and grew up to 3 months, remaining at a level ~50% of normal. Engraftment of cryopreserved neonatal testicular tissue was observed in 60% cases, however, engrafted tissue, similar to the fresh one, retained the ability for organogenesis with the formation of mature seminiferous tubules, epididymis, and groups of proliferating Leydig cells. The dynamics of blood testosterone concentration in rats with cryopreserved and fresh transplantation was similar. Subcapsular transplantation did not adversely affect the kidneys, which was seen from normal histological structure of the kidneys and creatinine and urea concentrations in the blood.

Key Words

regenerative medicine testis organogenesis cryopreservation androgen deficiency 

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • V. I. Kirpatovskii
    • 1
    Email author
  • G. D. Efremov
    • 1
  • E. V. Frolova
    • 2
  1. 1.N. A. Lopatkin Research Institute of Urology and Interventional Radiology, Affiliated Branch of National Medical Research Radiological Center, Ministry of Health of the Russian FederationMoscowRussia
  2. 2.All-Russian Institute of Scientific and Technical InformationRussian Academy of SciencesMoscowRussia

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