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HISTOLOGICAL STUDIES ON THE OVARIES OF SOWS I. : HISTOLOGICAL OBSERVATIONS ON THE FIVE GROUPS OF STRUCTURES FOUND ON OVARIAN SURFACES WITH SPECIAL REFERENCE TO HEMATOXYLIN-EOSIN SECTION-PREPARATIONS

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Please use this identifier to cite or link to this item:http://doi.org/10.14943/jjvr.7.1-4.177

Title: HISTOLOGICAL STUDIES ON THE OVARIES OF SOWS I. : HISTOLOGICAL OBSERVATIONS ON THE FIVE GROUPS OF STRUCTURES FOUND ON OVARIAN SURFACES WITH SPECIAL REFERENCE TO HEMATOXYLIN-EOSIN SECTION-PREPARATIONS
Authors: YAMASHITA, Tadayuki Browse this author
Issue Date: 1959
Publisher: The Graduate School of Veterinary Medicine
Journal Title: Japanese Journal of Veterinary Research
Volume: 7
Issue: 1-4
Start Page: 177
End Page: 202
Abstract: The results of this research may be summarized as follows. 1. Various cellular elements were found in the cavity of follicles and classified into 12 types. 2. Normal vesicular follicles were differentiated into 6 types according to their ripening process. The actual maturity of follicles may be decided by the histological appearances of follicle walls : viz., the conspicuous hypertrophy of theca interna cells, the conspicuous dilatation and hyperemia of capillaries, especially between the theca interna and the granulosa layer, the partial, plicated infoldings of the theca interna and so on. 4. Out of macroscopically normal follicles about a half were in the beginning stage of cystic atretic follicles. They were designated as follicles of group 2,and divided into 6 types. 5. The histological features of the first stage of cystic atretic follicles start in the appearances of degenerating granulosa cells in the granulosa layer, and the feature of distinct atresia is the complete necrosis of the granulosa layer. 6. White turbid follicles were divided into 6 types in series by histological findings according to grade of changes. 7. Most of the white turbid follicles corresponded to the second stage of cystic atretic follicle, and a few of them to the first stage. 8. The histological characteristics of the second stage of cystic atretic follicle were the disappearance of granulosa cells, the hypertrophy of theca interna cells and wandering of them into the cavity, the appearances of hyaline membrane in the inner walls, and the invasion of young connective tissues into the follicle cavity. 7. The cells of types E. Z. and D. E. Z. were considered to coincide with the theca lutein cells designated in the dualistic theory from their forms and characteristics. 10. White spots were divided into 5 types. 11. The majority of white spots were in the last stage of cystic atretic follicles, usually showing scar-tissue formation. 12. All types of the follicles of group 2,of white turbid follicles and of white spots, were put together, designated as cystic "atretic follicle" in sows, and classified newly into 12 types. 13. Dark-red turbid follicles were divided into 3 types. 14. The dark-red turbid follicles were similar to the cystic atretic follicles, except for the large amount of blood in the follicle cavity, conspicuous dilatation and hyperemia of the capillaries in the theca interna, and scattering of erythrocytes in the theca interna. 15. Corpora lutea of group 1 were divided into 8 types. 16. On the derivation of cells, the present writer has supported the dualistic theory of CORNER. 17. Macroscopically reddish-toned corpora lutea showed the features of vascularization stage, yellow-toned ones the features of the last stage of regression, and the yellowish-red ones the intermediate features between the previous 2 groups. 18. Corpora lutea containing a large amount of fluid in the central cavity were designated as "corpora lutea of group 2", and divided into 6 types. 19. The writer could not determine whether the corpora lutea of group 2 were the physiological phenomena or the pathological cysts. 20. The yellow spots which showed the higher hyaline degeneration of connective tissue and of blood vessels were designated as "hyaline bodies". 21. The "hyaline bodies" showed the features of the last stage of regressive corpus luteum of non-pregnancy. 22. The types of corpus luteum of group 1 and yellow spot of group 1 were put together, designated as the "corpora lutea of non-pregnancy" in sows, and newly divided into 10 types. 23. The yellow spots which contained many blood-vessels with relatively slight degeneration were designated as "vascular bodies". 24. The "vascular bodies" were thought to represent an old corpus luteum of pregnancy in sows. Further researches are expected to confirm this conception. 25. Of the brown yellow spots, only one showed the feature of scar-tissue. The writer thought that this was derived from the cystic atretic follicle with hemmorrhage.
Type: bulletin (article)
URI: http://hdl.handle.net/2115/4662
Appears in Collections:Japanese Journal of Veterinary Research > Volume 7, Number 1-4

Submitter: 獣医学部図書室

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