Effects of cadmium on ultrastructure and steroidogenesis in cultured porcine ovarian granulosa cells

P. Massányi, V. Uhrín, A. V. Sirotkin, K. Paksy, Z. Forgács, R. Toman, J. Kováčik

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Cadmium is an environmental risk factor having various toxic effects both in animals and in humans. The aim of this study was to study its effects on the structure and function of porcine ovarian granulosa cells cultured in vitro. Ultrastructure of granulosa cells was studied after 48 h of culture with (0.2, 10 and 20 ng CdCl2/ml) of without cadmium using transmission electron microscopy (TEM). Quantification of progesterone and 17-β-oestradiol was performed directly from aliquots of the media from control and treated cells by radioimmunoassay (RIA). After cadmium administration cell membranes were disintegrated. It was manifested by occurrence of vacuoles in the cytoplasm.The vacuoles contained fibrillar or membranous material. The Golgi complex rarely remained intact. Increased number of lysosomes was detected. With increasing cadmium concentrations the number of lipid droplets increased. In some cells the changes were less evident and dense mitochondria with distinct membranes were found. In other cell types the amount of mitochondrial matrix increased and that of membranes decreased. Some mitochondria fused with lysosomes. The endoplasmic reticulum rarely remained intact, and its dilation was well visible on transverse sections. Nuclei with distinct heterochromatin at the nuclear membrane were often observed. In these nuclei perinuclear cistern was dilated. Less frequently nuclei with condensed chromatin reminiscent of pyknosis were observed. Some nuclei had dispersed fine granular chromatin. In other cells changes were less evident, and comprised condensed chromatin in the central part of nuclei. These structural changes of granulosa cells exposed to cadmium were related to premature luteinization of these cells. In the evaluation of steroidogenesis we found that cadmium induced an increase in progesterone production, and a decrease in 17-β-oestradiol production by ovarian granulosa cells; however, these differences were not significant. The results of our study elucidate some of the effects of cadmium on gonadal function, and should also serve to increase the level of awareness of its effects on human and animal health.

Original languageEnglish
Pages (from-to)101-106
Number of pages6
JournalActa Veterinaria Brno
Volume69
Issue number2
Publication statusPublished - 2000

Fingerprint

steroidogenesis
Granulosa Cells
granulosa cells
Cadmium
cadmium
ultrastructure
Swine
swine
Chromatin
chromatin
lysosomes
Vacuoles
Lysosomes
vacuoles
Progesterone
cells
estradiol
Estradiol
progesterone
Mitochondria

Keywords

  • 17-β-oestradiol
  • Cadmium
  • Granulosa cells
  • Progesterone
  • Ultrastructure

ASJC Scopus subject areas

  • veterinary(all)

Cite this

Massányi, P., Uhrín, V., Sirotkin, A. V., Paksy, K., Forgács, Z., Toman, R., & Kováčik, J. (2000). Effects of cadmium on ultrastructure and steroidogenesis in cultured porcine ovarian granulosa cells. Acta Veterinaria Brno, 69(2), 101-106.

Effects of cadmium on ultrastructure and steroidogenesis in cultured porcine ovarian granulosa cells. / Massányi, P.; Uhrín, V.; Sirotkin, A. V.; Paksy, K.; Forgács, Z.; Toman, R.; Kováčik, J.

In: Acta Veterinaria Brno, Vol. 69, No. 2, 2000, p. 101-106.

Research output: Contribution to journalArticle

Massányi, P, Uhrín, V, Sirotkin, AV, Paksy, K, Forgács, Z, Toman, R & Kováčik, J 2000, 'Effects of cadmium on ultrastructure and steroidogenesis in cultured porcine ovarian granulosa cells', Acta Veterinaria Brno, vol. 69, no. 2, pp. 101-106.
Massányi, P. ; Uhrín, V. ; Sirotkin, A. V. ; Paksy, K. ; Forgács, Z. ; Toman, R. ; Kováčik, J. / Effects of cadmium on ultrastructure and steroidogenesis in cultured porcine ovarian granulosa cells. In: Acta Veterinaria Brno. 2000 ; Vol. 69, No. 2. pp. 101-106.
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