Golden hamster myoid cells during active and inactive states of spermatogenesis: correlation of testosterone levels with structure

The American Journal of Anatomy
M KurohmaruL D Russell

Abstract

Myoid cells were examined quantitatively in adult golden hamsters with active spermatogenesis and compared with hamsters in which the testes were regressed due to a modification in the light-dark cycle. A detailed morphometric study was undertaken utilizing animals previously examined. The cell-surface area and volumes of most organelles were not significantly different in animals which were gonadally active as compared with regressed animals. A slight, but significant, increase in nuclear volume (31%) and a slight, but significant, decrease (28%) in cell volume were recorded for regressed animals. The total volume of pinocytotic vesicles was increased dramatically (approximately threefold) in active animals in comparison with inactive animals (P less than 0.01), indicating that an increase in non-specific transport across the myoid cell is associated with spermatogenic activity. Intravascularly injected horseradish peroxidase was capable of entering pinocytotic vesicles in both active and inactive animals. Plasma luteinizing hormone (LH) as well as plasma and testicular testosterone levels were weakly (r = 0.64, 0.68, and 0.65, respectively), but significantly (P less than 0.05), correlated with cell size. Plasma and testicula...Continue Reading

References

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Citations

Apr 1, 1995·Tissue & Cell·L D Russell, L R de França
Oct 27, 2001·Annals of Anatomy = Anatomischer Anzeiger : Official Organ of the Anatomische Gesellschaft·I IchiharaL J Pelliniemi
Nov 4, 2000·Biology of Reproduction·L R FrançaL D Russell
May 1, 1992·The Anatomical Record·F PalombiM Stefanini
Feb 1, 1995·The Anatomical Record·L R de FrançaL D Russell
Apr 1, 1995·Annals of Human Genetics·W H James

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