The results revealed that, approximately two months following transplantation, testes of recipient sexually mature tilapia are capable of generating functional fertile spermatozoa and generate progeny with the donor genotype.
As a new hope for many such men with azoospermia, a pioneering breakthrough in reproductive biology was the discovery that spermatogonial stem cells isolated from mouse testes could maintain their ability to generate fully functional sperm following transplantation into testes of another mouse [23], [24], [25].
To evaluate the supportive effects of Rosa damascene (R. damascene) essential oil on epididymal sperm quality and histopathology of testes following long term administration of copper sulfate in mice.
Testosterone is produced by Leydig cells in the testes following stimulation by LH pulses from the pituitary gland, which are regulated by rhythmic pulses of GnRH controlled by the SCN.
Total RNA was isolated from ovaries and testes following the Trizol RNA isolation protocol (Invitrogen) and purified on RNeasy columns (Qiagen).
We then assessed the changes in the expression levels of nephrin and podocin in the rat testes following treatment with cisplatin and/or candesartan.
To evaluate the regulatory mechanism of nephrin and podocin by angiotensin-II in addition to these findings, we assessed the effects of candesartan, one of the most prevalent ARBs, on the damage in rat testes following cisplatin treatment.
Expression patterns of nephrin and podocin in the rat testes following treatment with cisplatin and/or candesartan are presented in Figure 3. Dual-labeling immunofluorescence staining revealed colocalization of nephrin and podocin near the basal membrane of seminiferous tubules.
Other relevant end points, particularly the genesis of female germ cells in male testes following experimental exposures to effluents, have not yet been demonstrated (Environment Agency 2004b; Rodgers-Gray et al. 2001); this phenomenon remains a key area for investigation.
Since predictor variables were related to each other (thus non orthogonal), they were added to the multiple regression analysis in the following order: body mass, testes mass, using a sequential (Type I) sum of squares.
Under general anaesthesia following exteriorisation of the testes, Tera-2 clones isolated above were injected into the left testis (1 × 10 cells in 25 μl PBS).
