Testosterone Synthesis by Chicken Follicular Cells

  • Eileen Su-Rong Huang
  • A. V. Nalbandov
Part of the Advances in Experimental Medicine and Biology book series (AEMB, volume 112)


The roles of theca and of granulosa cells in the synthesis of testosterone (T) in ovarian follicle of hens have been studied. Theca cells alone synthesized no progesterone (P), and no or only negligible amounts of T. Granulosa cells, in contrast, without stimulation produced large amounts of P and small amounts of T. When incubated with ovine gonadotrophins, theca cells showed greater response than granulosa cells in synthesizing more T (2- to 2.5-fold increase). Combination of the two follicular cell types decreased synthesis of P, but increased that of T (9- to 17-fold). When 0.1 pg of ovine luteinizing hormone (oLH) was added to the combined cells, T concentrations increased most dramatically, a 83-fold increase was seen after 12 h of incubation. Theca cells incubated with exogenous P also produced large amounts of T. These results indicated that in hens, theca cells may be the major site of follicular T synthesis, however, theca cells alone cannot synthesize T unless granulosa cells or P were added. It is suggested that granulosa cells may use P as a precursor, and that P is converted to T in the theca cells.


Granulosa Cell Ovarian Follicle Follicular Cell Theca Cell Large Follicle 
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Copyright information

© Plenum Press, New York 1979

Authors and Affiliations

  • Eileen Su-Rong Huang
    • 1
  • A. V. Nalbandov
    • 1
  1. 1.Animal Genetics LaboratoryUniversity of IllinoisUrbanaUSA

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