イチキ　ヨシノブ   ICHIKI Yoshinobu   市来　嘉伸    所属   埼玉医科大学  医学部 国際医療センター　呼吸器外科    職種   専任講師
論文種別	学術雑誌(原著)
言語種別	英語
査読の有無	査読なし
表題	Immunohistochemical evaluation of cytochrome P450 (CYP) and p53 in breast cancer.
掲載誌名	正式名：Frontiers in bioscience : a journal and virtual library ISSNコード：10939946
巻・号・頁	10,1156-61頁
著者・共著者	Tsunehiro Oyama,Masaru Morita,Toyohi Isse,Norio Kagawa,Shyouzi Nakata,Tetsuya So,Makiko Mizukami,Yoshinobu Ichiki,Kenji Ono,Masakazu Sugaya,Hidetaka Uramoto,Takashi Yoshimatsu,Takeshi Hanagiri,Kenji Sugio,Toshihiro Kawamoto,Kosei Yasumoto
発行年月	2005/05
概要	In breast cancer, cytochrome P450 (CYP) metabolizes both endogenous substrates (i.e. estradiol) and exogenous substrates (i.e. anticancer drugs), which is associated not only with tumor development and progression but also with efficacy of cancer treatment. Therefore, we examined the expression of CYPs (CYP2A6, CYP1B1 and CYP3A) and p53 in specimens from 34 Japanese patients with breast cancer by immunohistochemistry. The expression of CYP3A was not detected in the 34 cases. CYP2A6 was detected only in one specimen (2.9%). Twenty-eight specimens (82.4%) showed positive signals for CYP1B1 expression. Eight of 34 (23.5%) were positive for p53 expression. Positive rate of CYP1B1 in stage I disease (100%) was statistically higher than that in stage II - IV disease (70.0%). Positive rate of p53 was 21.4% (6/28) in CYP1B1-positive cases and 33.3% (2/6) in CYP1B1-negative cases. There was no significant relationship between CYP1B1 expression and p53 expression. In conclusion, the expression of CYP3A in breast cancer may be less frequent in Japanese population although the expression of CYP3A has been reported in 20% of breast cancer in Caucasian, suggesting that the CYP3A expression in br
PMID	15769614