Hamny

Characterization of Seminiferous Epithelium Stages in the Wild Javan Muntjac (Muntiacus muntjak muntjak) Using the Tubular Morphology Method

Stages of the seminiferous epithelium of the testis of the wild Javan muntjac (Muntiacus muntjak muntjak) in hard antler period were characterized based on the tubular morphology method. The number and the relative frequencies of seminiferous epithelium stages and the morphometry of germinal cell nuclei were identified microscopically. We identified eight stages of seminiferous epithelium in testicular tissue of the Javan muntjac and found that the relative frequencies of stages I to VIII were 14.87, 15.12, 17.75, 6.87, 7.37, 12.37, 13, and 12.62%, respectively. The diameter of the nuclei of germinal cells varied in each stage of seminiferous epithelium. Diplotene-stage primary spermatocytes had prominent and large nuclei ~8.97 ± 1.0 μm in stages III and IV. Pachytene primary spermatocytes appeared in most stages, except stage IV, whereas leptotene- and diplotene-stage primary spermatocytes were found in stages I and II, and III and IV, respectively. Round spermatids were observed in stages IV to VIII and in stage I but were absent in stages II and III, while elongated spermatids were observed in all stages except stage I. Our findings show that the stages of seminiferous epithelium in the Javan muntjac are similar to those found in neotropical cervids, small ruminants, and other domestic animals.

1. Immunohistochemical Study of the Immunoreactive Follicle Stimulating Hormone (ir-FSH) Cells Distribution in Pituitary Gland of Rat(Rattus norvegicus)

The objective of this study was to identified the development of the immunoreactive follicle stimulating hormone (ir-FSH) cells in pituitary glands of rats (Rattus norvegicus) in different age using immunohistochemical (IHC) methods. The pituitary organ that used in this study was collected from eight white female rats aged 2, 4, 6, and >12 months. Pituitary glands were processed histologically and stained with IHC methods to detect the ir-FSH cells. The result showed that the ir-FSH cells were observed in pars distalis (PD), pars tuberalis (PT), and pars intermedia (PI) of adenohypophysis with different number of cells. Furthermore, ir-FSH cells were found abundantly (+++) in the PT and a few (+) in PD of rats aged two months. In rats aged 4 months those cells were distributed in slight number (+) in PT and abundant (+++) in PD. In addition, the cells were also found in a great quantities in rats whose ages were 6 months, (+++) in both PT and PD, but these cells decreased (++) in rats aged >12 months in PD and absent (-) in PT. In conclusion, the devalopment and distribution of ir-FSH cells were found in pars tuberalis and pars distalis adenohypophysis in the pituitary glands of rats aged 2 up to >12 months with different number and distribution patterns.