このエントリーをはてなブックマークに追加
ID 734
本文ファイル
著者
Kashiwabara, Shoji
Kashimoto, Naoki
Sanoh, Seigo
Uesaka, Toshihiro
Katoh, Osamu
Watanabe, Hiromitsu
キーワード
Tritiated water
Cs-γ-rays
Mouse
Testis
NDC
医学
抄録(英)
Tritiated water at 23.2, 46.3 or 92.5 MBq/animal and <137>^Cs-γ-rays at 9.5 Gy (equivalent 370 MBq) or lower doses were administered to 6-week old male C3H/HeNCrj and C57BL/6NCrj mice, as well as FI Crj: B6C3F1 (C3H × C57BL) progeny. Each set of six to ten animals were autopsied 30 days after the first irradiation. Testis weights were decreased dose dependently, relative values being highest in the C3H and lowest in the C57BL case, with B6C3F1 intermediate. Vacuolization in seminiferous tubules appeared in the 23.2 MBq group and increased with the dose. Focal pyknosis and karyomegaly were found at 46.3 MBq, while primary and secondary spermatocytes and spermatids disappeared with 92.5 MBq. Only a few spermatogonia and Sertoli cells remained after exposure to 9.5 Gy <137>^Cs-γ-rays. Sizes of seminiferous tubules were decreased dose dependently, with no strain differences. When male B6C3F1 mice were irradiated with Cs-γ-rays at 0.119 (equivalent 4.63 MBq tritiated water) or 2.38 Gy (equivalent 92.5 MBq tritiated water), body weights and size of the seminiferous tubules were decreased at both doses, and the larger dose also caused reduction of testis weight and abnormal sperm. However, all changes except for the alteration in weights had disappeared 1 month after the final irradiation. It is considered that the size of seminiferous tubules may be a good parameter for radiation damage in the testis.
掲載誌名
Hiroshima Journal of Medical Sciences
52巻
3号
開始ページ
53
終了ページ
58
出版年月日
2003-09
出版者
Hiroshima University Medical Press
寄与者
国立情報学研究所
作成年月日
2006-03-21
ISSN
0018-2052
NCID
言語
英語
NII資源タイプ
紀要論文
広大資料タイプ
学内刊行物(紀要等)
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
部局名
原爆放射線医科学研究所
医歯薬学総合研究科
他の一覧