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AN10079809-20100331-0001  
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Title
Title UVB-induced damage and photoreactivation in the integument of the terrestrial isopod Armadillidium vulgare  
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Romanization  
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Name 佐藤, 由紀子  
Kana サトウ, ユキコ  
Romanization Sato, Yukiko  
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Name 阿部, 道夫  
Kana アベ, ミチオ  
Romanization Abe, Michio  
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Name 佐々木, 史江  
Kana ササキ, フミエ  
Romanization Sasaki, Fumie  
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Name 中村, 真樹  
Kana ナカムラ, マサキ  
Romanization Nakamura, Masaki  
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Name 高柳, 信之輔  
Kana タカヤナギ, シンノスケ  
Romanization Takayanagi, Shinnosuke  
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Name 根岸, 寿美子  
Kana ネギシ, スミコ  
Romanization Negishi, Sumiko  
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Place
横浜  
Publisher
Name 慶應義塾大学日吉紀要刊行委員会  
Kana ケイオウ ギジュク ダイガク ヒヨシ キヨウ カンコウ イインカイ  
Romanization Keio gijuku daigaku Hiyoshi kiyo kanko iinkai  
Date
Issued (from:yyyy) 2010  
Issued (to:yyyy)  
Created (yyyy-mm-dd)  
Updated (yyyy-mm-dd)  
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Source Title
Name 慶應義塾大学日吉紀要. 自然科学  
Name (Translated) The Hiyoshi review of the natural science  
Volume  
Issue 47  
Year 2010  
Month  
Start page 1  
End page 13  
ISSN
09117237  
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Abstract
Recent studies have shown the molecular mechanisms of UV-induced damage such as the production of cyclobutane pyrimidine dimers (CPDs),  increased apoptosis and DNA repair by photolyase. However, ultrastructural changes induced by UVB and subsequent mechanisms remain unsolved "in  vivo", due to the absence of suitable living animal models to investigate the photoreactivation following UV damage. In this study, we show that UVB- induced DNA damage and apoptosis arelimited in the integument of woodlice "Armadillidium vulgare in vivo" and that the DNA damage is repaired by a hotolyase excited by visible light. UVB (15.4 J/m2, 2.4 kJ/m2) radiation induces one type of DNA damage, CPD, in the integument of A. "vulgare", and the number of apoptotic cells increased 9 hr after UVB exposure. Treatment with visible light accelerated the reduction of CPD and suppressed the increase in apoptosis induced by UVB. This study also provides evidence showing that UVB is blocked by two kinds of pigment cells, black and yellow hromatophores, and that clusters of pigment granules, which are usually distributed within chromatophores, are excreted into the epidermal cell layer beneath the cuticle. These results suggest that the photoreactivation mechanism and the pigment cell layer are important to protection from UVB in living A. "vulgare"
 
Table of contents

 
Keyword
UVB  

DNA photoproduct  

terrestrial isopod  

ommochrome granule  

apoptosis  

cyclobutane pyrimidine dimers  
NDC
 
Note
原著論文
 
Language
英語  
Type of resource
text  
Genre
Departmental Bulletin Paper  
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Last modified date
Aug 11, 2010 09:00:00  
Creation date
Aug 11, 2010 09:00:00  
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Index
/ Public / The Hiyoshi Review / The Hiyoshi review of natural science / 47 (2010)
 
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