Neoplastic lesions of the human liver in relation to the activity of the cytochrome P-450 dependent monooxygenase systemDanuta Plewka, Andrzej Plewka, Grażyna Nowaczyk, Marcin Kamiński, Tomasz Rutkowski, Tomasz Lundyga, Krzysztof Ziaja
Med Sci Monit 2000; 6(2): BR244-248 :: ID: 508384
We studied the activity of Mixed function oxidase (MFO) in human livers affected by cancer. We determined the content of cytochrome P-450 and b5, as well as the activity of their corresponding reductases, according to generally accepted methods. Liver fragments corresponding with a) healthy tissue, b) tissue at the cancer border and, c) cancerous tissue were collected during surgery from patients with liver cancer. We noted that the developing liver cancer decreased the level of cytochrome P-450, even by a magnitude order. The activity of its corresponding reductase was higher in cancerous than in healthy tissues. Cytochrome b5 behaved in an analogous manner, although the decrease in its content was less significant. NADH-cytochrome b5 reductase activity changes were insignificant.
key words: liver • human • cytochrome P-450 • cancer
Keywords: cancer, cytochrome P-450, human, Liver
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