Advertisement

Cytotechnology

, Volume 14, Issue 2, pp 147–153 | Cite as

Can macroscopic identification of large ovarian follicles be useful in eliminating follicles with impaired steroid function?

  • D. Dudek
Technical Report
  • 24 Downloads

Abstract

In vitro” studies, commonly using porcine ovarian follicles, may generate inconsistent results when atretic follicles are not eliminated from the pool of experimental follicles. The present experiment was conducted to test the practical value of the macroscopie identification of large porcine follicles, which were assumed to be atretic. Histological observations of hematoxylin-eosin stained follicular sections confirmed the results of the macroscopic classification. The follicles classified as presumably abnormal revealed signs of atresia at the light microscopic level. Such follicles (type 2) showed decreased levels of estradiol and androgens in comparison with the healthy-looking follicles (type 1).

Steroid analysis also revaled that practically all estradiol from an ovarian follicle could be detected in the follicular fluid, whereas androgens extracted from follicular fluid represented approximately half of the total amount of follicular androgens.

The experimental results indicate that the introduced macroscopic classification could be helpful in eliminating follicles with an impaired steroid function.

Key words

atresia porcine ovarian follicles estradiol androgens 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Ainsworth L, Tsang BK, Downey BR, Marcus GJ (1990) The synthesis and actions of steroids and prostaglandins during follicular maturation in pig. J Reprod. Fertil. [Suppl] 40: 137–150.Google Scholar
  2. Akins EL, Morrisette MC (1969) Gross ovarian changes during estrus cycle of swine. Amer. J. Res. 29: 1953–1955.Google Scholar
  3. Carson RS, Findlay JK, Clarke IJ, Burger HG (1981) Estradiol, testosterone and androstenedione in ovine follicular fluid during growth and atresia of ovarian follicles. Biol. Reprod. 24: 105–113.Google Scholar
  4. Channing CP, Ledwitz-Righby F (1975) Methods for assessing hormone mediated differentiation of ovarian cells in culture and short term incubations. In: Methods in Enzymology XXXIX Part D/J., B. Hardman and B. O'Maddley. Academic Press, New York, London: 183–230.Google Scholar
  5. Dufau ML, Catt KJ, Tsuruhara T, Ryan D (1972) Radioimmunoassay of plasma testosterone. Clin. Chim. Acta 37: 109–116.Google Scholar
  6. Farookhi R (1981) Atresia: A Hypothesis. In: Dynamics of Ovarian Function. Schwartz NB, Hunzicker-Dunn M. (eds.). Raven Press, New York: 13–25.Google Scholar
  7. Greenwald GS, Terranova PF (1988) Follicular selection and its control. In: The Physiology of Reproduction, Knobil E, and Neill J, (eds.) Raven Press, New York: 387–445.Google Scholar
  8. Hubbard ChJ, Oxberry B (1991) Follicular atresia. In: Ultrastructure of the Ovary. Familiari G, Makaba S, Motto PM, (eds.). Kluwer Academic Publishers: 273–285.Google Scholar
  9. Hotchkiss J, Atkiinson LE, Knobil E (1971) Time course of serum estrogen and luteinizing hormone (LH) concentrations during menstrual cycle of rhesus monkey. Endocrinology 89: 177–189.Google Scholar
  10. Hunter MG, Wiesak T (1990) Evidence for and implications of follicular heterogeneity in pigs. J. Reprod. Fertil. 40 [Suppl]: 163–177.Google Scholar
  11. Maxson WAS, Haney AF, Schomberg DW (1985) Steroidogenesis in porcine atretic follicle: loss of aromatase activity in isolated granulosa and theca. Biol. Reprod 33: 495–501.Google Scholar
  12. Rátky J, Brüssow KP (1992) Ovarian morphological changes during the estrus cycle in gilts. In: Proceedings of The 12th International Congres on Animal Reproduction. The Hague, The Netherlands. Vol. 1: 102–104.Google Scholar
  13. Ryan JR (1981) Follicular atresia: some speculations of biochemical markers and mechanisms. In: Dynamics of Ovarian Function. Schwartz NB, Hunzicker-Dunn M (eds.). Raven Press New York: 1–11.Google Scholar
  14. Stoklosowa S, Gregoraszczuk E, Channing CP (1982) Estrogen and progesterone secretion by isolated cultured porcine thecal and granulosa cells. Biol. Repord. 26: 943–952.Google Scholar
  15. Tsafriri A, Braw RH (1984) Experimental approaches to atresia in mammals. Oxf. Rev. Repord. Biol. 6: 226–265.Google Scholar
  16. Uilenbroek JThJ, Van der Schoot P, Woutersen PJA (1981) Changes in steroidogenic activity of preovulatory rat follicles after block-age of ovulation with nembutal. In: Dynamics of Ovarian Function. Schwartz N.B, Hunzicker-Dunn M. (Eds.). Raven Press, New York: 41–61.Google Scholar

Copyright information

© Kluwer Academic Publishers 1994

Authors and Affiliations

  • D. Dudek
    • 1
  1. 1.Laboratory of Endocrinology and Tissue Culture, Department of Physiology, Institute of ZoologyJagiellonian UniversityKrakówPoland

Personalised recommendations