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Fine structure of mule testes: light and electron microscopy study.
Am J Vet Res 1977; 38(4):443-7AJ

Abstract

Testes of 3 mules, 3 stallions, and 3 donkeys were studied by light and electron microscopic techniques. Mule testes were firm, with an average weight less than that of stallion or donkey testes. As expected, mule seminiferous tubules had few cell elements. There were 2 cell populations within the seminiferous tubules: (a) Only basal spermatogonia and Sertoli's cells in 70% of the tubules and, (b) the cells in (a) plus leptotene and pachytene primary spermatocytes in 30% of the tubules. Degenerative changes occurred at the pachytene stage and began with the appearance of nuclear vesicles and chromatin condensation. The last stages disclosed pyknotic nuclei and cytoplasmic vesicles. The interstitia were filled by connective tissue elements and few Leydig's cells. Interstitial cells had well-developed, smooth endoplasmic reticula and mitochondria, indicating a normal steroidogenic activity. Epididymides in the mule had morphologic features similar to those of the stallion or donkey, except for the presence of intertubular fibrosis. Degenerative changes in primary spermatocytes indicate metabolic alterations which could be explained by the blockage of meiosis.

Authors

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Pub Type(s)

Journal Article

Language

eng

PubMed ID

851277

Citation

Hernández-Jáuregui, P, and H Márquez Monter. "Fine Structure of Mule Testes: Light and Electron Microscopy Study." American Journal of Veterinary Research, vol. 38, no. 4, 1977, pp. 443-7.
Hernández-Jáuregui P, Márquez Monter H. Fine structure of mule testes: light and electron microscopy study. Am J Vet Res. 1977;38(4):443-7.
Hernández-Jáuregui, P., & Márquez Monter, H. (1977). Fine structure of mule testes: light and electron microscopy study. American Journal of Veterinary Research, 38(4), pp. 443-7.
Hernández-Jáuregui P, Márquez Monter H. Fine Structure of Mule Testes: Light and Electron Microscopy Study. Am J Vet Res. 1977;38(4):443-7. PubMed PMID: 851277.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fine structure of mule testes: light and electron microscopy study. AU - Hernández-Jáuregui,P, AU - Márquez Monter,H, PY - 1977/4/1/pubmed PY - 1977/4/1/medline PY - 1977/4/1/entrez SP - 443 EP - 7 JF - American journal of veterinary research JO - Am. J. Vet. Res. VL - 38 IS - 4 N2 - Testes of 3 mules, 3 stallions, and 3 donkeys were studied by light and electron microscopic techniques. Mule testes were firm, with an average weight less than that of stallion or donkey testes. As expected, mule seminiferous tubules had few cell elements. There were 2 cell populations within the seminiferous tubules: (a) Only basal spermatogonia and Sertoli's cells in 70% of the tubules and, (b) the cells in (a) plus leptotene and pachytene primary spermatocytes in 30% of the tubules. Degenerative changes occurred at the pachytene stage and began with the appearance of nuclear vesicles and chromatin condensation. The last stages disclosed pyknotic nuclei and cytoplasmic vesicles. The interstitia were filled by connective tissue elements and few Leydig's cells. Interstitial cells had well-developed, smooth endoplasmic reticula and mitochondria, indicating a normal steroidogenic activity. Epididymides in the mule had morphologic features similar to those of the stallion or donkey, except for the presence of intertubular fibrosis. Degenerative changes in primary spermatocytes indicate metabolic alterations which could be explained by the blockage of meiosis. SN - 0002-9645 UR - https://www.unboundmedicine.com/medline/citation/851277/Fine_structure_of_mule_testes:_light_and_electron_microscopy_study_ DB - PRIME DP - Unbound Medicine ER -