Comparative Expression Analysis of HSP70, HSP90,
IL-4, TNF, KITLG and KIT-receptor Gene between
Varicocele-Induced and Non-Varicocele Testes of Dog
This study was designed to create an experimental varicocele model by a
simple surgical procedure in dog with minimum invasion and to investigate the effect of
varicocele-induced infertility on the expression of six related genes (
Materials and Methods
In this experimental study, the proximal part of the pampini-form plexus of dog testes was partially occluded without abdominal incision which was confirmed by venographic examination. To evaluate varicocele in its acute form, dogs were castrated after 15 days and testes were dissected. Histopathologic evaluation was undertaken and the relative expression of the six genes was assessed by quantitative realtime polymerase chain reaction (PCR).
Microscopic changes showed tubule degeneration. The Johnson score was significantly decreased in the varicocele testes when compared with non-varicocele testes.
We conclude that partial occlusion of the proximal part of the pampiniform plexus induces varicocele in the testis of dog. Differential expression of the mentioned genes may be responsible for the pathophysiology of varicocele and related subfertility.