Stereological Studies of the Parathyroid Gland of Phosphate-Treated Golden Hamsters Subjected to a Hypergravity Environment
| Autor: | Daisuke Hayakawa, Hideo Isono, Tomo Yamahira, Shoichi Emura, S. Shownura, Michio Arakawa, A. Tamad, K. Terasawa, Michiya Utsumi |
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| Rok vydání: | 1992 |
| Předmět: |
Male
medicine.medical_specialty Histology Hamster Biology Cytoplasmic Granules Phosphates Parathyroid Glands chemistry.chemical_compound Reference Values Cricetinae Internal medicine medicine Animals Hypergravity Mesocricetus Phosphate Microscopy Electron Glandula endocrina medicine.anatomical_structure Endocrinology chemistry Vacuoles Ultrastructure Calcium Parathyroid gland Anatomy Lysosomes Gravitation Endocrine gland |
| Zdroj: | Cells Tissues Organs. 144:184-188 |
| ISSN: | 1422-6421 1422-6405 |
| DOI: | 10.1159/000147305 |
| Popis: | The ultrastructure of the parathyroid glands of phosphate-treated golden hamsters exposed to a 5-G environment was studied. In the phosphate-treated animals exposed to a hypergravity environment, the Golgi complexes associated with numerous prosecretory granules, and the enlarged intercellular spaces containing floccular or finely particulate material showed a significant increase compared to those of the control, centrifuged, and phosphate-treated groups, and the cisternae of the granular endoplasmic reticulum showed a significant increase compared to those of the control and phosphate-treated groups. In addition, numerous secretory granules were situated close to the plasma membrane of chief cells in the phosphate-treated animals exposed to a hypergravity environment. These findings suggest that the synthesis, and to a greater extent the release of secretory granules may be markedly stimulated, in the parathyroid glands of phosphate-treated animals exposed to a hypergravity environment. |
| Databáze: | OpenAIRE |
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