このエントリーをはてなブックマークに追加
ID 16229
Eprint ID
16229
FullText URL
Thumnail 97_947.pdf 2.02 MB
Title Alternative
Experimental study on the malformations of ossicles in the rat fetus using bone and cartilage staining
Author
Kawasaki, Koichiro
Abstract
On the 10th day of pregnancy, the mother rats were injected with water miscible vitamin A (200,000IU/kg) intraperitoneally to gain fetuses with malformed ear induced by maternal hypervitaminosis A. Their fetuses were removed on the 21st day for preparation of their skeletal specimens by using bone and cartilage staining. In order to examine pathological findings of the malformed ear, chiefly of the middle ear region, a stereoscopic microscope was used. The results were as follows: No abnormalities were found in the majority of the tympanic bone, Meckel's cartilage and malleus. Abnormalities such as malformation and absence were found in the majority of the styloid process from Reichert's cartilage origin, the incus and the stapes. In view of the above phenomena, these are highly probable that the malleus has its origin in the first branchial arch that is associated with the Meckel's cartilage and the stapes has its origin in the second branchial arch that is associated with the Reichert's cartilage. It is also probable that the greater part of the incus also has its origin in the second branchial arch.
Keywords
ビタミンA過剰投与
ラット胎仔
耳小骨奇形
Published Date
1985-12-30
Publication Title
岡山医学会雑誌
Publication Title Alternative
Journal of Okayama Medical Association
Volume
volume97
Issue
issue11-12
Publisher
岡山医学会
Publisher Alternative
Okayama Medical Association
Start Page
947
End Page
961
ISSN
0030-1558
NCID
AN00032489
Content Type
Journal Article
Official Url
https://www.jstage.jst.go.jp/article/joma1947/97/11-12/97_11-12_947/_article/-char/ja/
Related Url
http://www.okayama-u.ac.jp/user/oma/index.html
language
日本語
Copyright Holders
岡山医学会
File Version
publisher
Refereed
True
Eprints Journal Name
joma