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Abstract

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Purpose : The fate of avascular implants was compared with that of testicular
transplants using vascular anastomosis in castrated inbred rats.
Materials and Methods : Mature inbred male rats were bilaterally castrated and
received one testicle as a transplant to the scrotum. The blood supply of the grafts was
reestablished by performing an end-to-side anastomosis between an aorto-caval segment
of the donor bearing the testicular vessels and the abdominal aorta plus vena cava of
the recipient. The average ischemia was 90min. Lutenizing hormone(LH),
follicle-stimulating hormone(FSH) and testosterone were determined by
radioimmunoassay in serum samples.
Results : In 12 transplant recipients(6 isografts and 6 allografts), a good blood
perfusion of the graft was achieved. Out of these, 6 isogenic transplants maintained
normal testosterone, LH and FSH during follow up. Implant recipients, however, all
displayed a striking early rise of the serum gonadotropins and concomitant castrsted
levels of serum testosterone.
Conclusions : Vascular transplantation rather than simple implantation is the method
of choice for further research. And in allogenic testicular transplantation, there remains a
problem of rejection after the operation, as in any other organ transplantation.

Å°¿öµå

Testis; Transplantation; Implantation; Gonadotropin;

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