Moreover, the nutrients usually act on the endocrine instead of the
spermatogenic task of the testis (Ganabadi et al., 2010).
This deletion is mainly associated with NOA presenting with
spermatogenic failure and severe oligospermia.
de Lucca Moreira Gomes et al., "Histomorphometric evaluation of the neotropical brown brocket deer Mazama gouazoubira testis, with an emphasis on cell population indexes of
spermatogenic yield," Animal Reproduction Science, vol.
The testis sections revealed several histological changes such as nuclear pyknosis and cytoplasmic microvacuolization in the
spermatogenic cells, irregular seminiferous tubules, and relative loss of the
spermatogenic cells in the CPA-treated rats.
Differences in diameters of
spermatogenic (spermatogonium, spermatocyte, spermatid, and spermatozoa) and oogenic stages (oogonia, previtellogenic oocyte, vitellogenic oocyte, and postvitellogenic oocyte) between diploids and tetraploids were analyzed by means of analysis of variance (Statistica v.8).
The cryopreservation process can compromise the function of
spermatogenic cells because of their exposure to low temperatures and osmotic imbalances.
The normal
spermatogenic columns are almost recognizable.
Wood et al., "Overlapping dose responses of
spermatogenic and extragonadal testosterone actions jeopardize the principle of hormonal male contraception," FASEB Journal, vol.
They concluded that steroidogenic dysfunction might be a direct or indirect consequence of insulin deficiency that is corrected by insulin replacement, but
spermatogenic dysfunction is due to direct effect of STZ on Sertoli cells.