Postnatal Developmental Changes in Immunohistochemical Localization of .ALPHA.-Smooth Muscle Actin (SMA) and Vimentin in Bovine Testes
| Autor: | Motozumi Matsui, Masahiro Takahashi, Shigenori Matsuzaki, Bhuminand Devkota, Shingo Haneda, Yoh-Ichi Miyake, Takeshi Osawa, Ken-Ichi Takahashi, Motoki Sasaki |
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| Rok vydání: | 2006 |
| Předmět: |
Male
endocrine system medicine.medical_specialty Stromal cell Vimentin Biology Basal (phylogenetics) Rete testis Internal medicine Testis medicine Animals Actin urogenital system Muscle Smooth SMA Sertoli cell Immunohistochemistry Actins Cell biology medicine.anatomical_structure Endocrinology biology.protein Cattle Animal Science and Zoology |
| Zdroj: | Journal of Reproduction and Development. 52:43-49 |
| ISSN: | 1348-4400 0916-8818 |
| DOI: | 10.1262/jrd.17062 |
| Popis: | The present study demonstrates the postnatal developmental changes in immunohistochemical localization of alpha-smooth muscle actin (SMA) and vimentin in the bovine testis. In the peritubular myoid cells of seminiferous tubules and the sub-epithelial and stromal cells of straight tubules and the rete testis, alpha-SMA starts appearing at around 4 months of age. Peritubular alpha-SMA attains the continuous mature pattern at around 5 months of age whereas sub-epithelial and stromal alpha-SMA increases with advancing age. Vimentin is localized in the perinuclear zone of Sertoli cells, peritubular and vascular wall cells, a few interstitial cells, and in the basal part of the epithelia of straight and rete tubules. Developmental changes are only evident in the Sertoli cell vimentin, which is basal and weak at birth and increases moderately until 4 months of age. From around 5 to 8 months of age when the Sertoli cells are under morphological transformation, vimentin intensity is considerably increased and the characteristic vimentin extensions connect the Sertoli nuclei to the basal membrane. These extensions get shorter at around 9 month of age as the Sertoli nuclei are positioned basally. The mature Sertoli cell perinuclear vimentin is strong and stable without infranuclear extension. In conclusion, the age of appearance of alpha-SMA coincides with the onset of postnatal division of spermatogonia, and vimentin may play a key role in stabilizing Sertoli cell nuclei during their transformation in bovine. |
| Databáze: | OpenAIRE |
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