Publicações científicas

Carbonyl reductase and NADPH cytochrome P450 reductase activities in human tumoral versus normal tissues

López de Cerain A, Marín A, Idoate MA [ES], Tuñón MT, Bello J.
Toxicology Department, Universidad de Navarra, Pamplona, Spain.

Revisão:European Journal of Cancer

Data: 1/Fev/1999

Área do Cancro da Mama Anatomia Patológica [ES]

The use of bioreductive agents in enzyme-directed bioreductive therapy has been proposed to take advantage not only of hypoxia in tumours, but also of the presence of reductases that metabolise such compounds. In this study, we studied the activities of NADPH cytochrome P450 reductase (P450R) and carbonyl reductase (CR) in 17 human lung tumours and 18 human breast tumours, together with the corresponding normal tissues.

For lung cancer but not for breast cancer there was a significant difference in the CR activity between normal and tumour tissue. CR activity was increased with respect to the normal tissue between 2-fold and 40-fold indicating heterogeneity in tumour samples. No relationship was found between CR activity and the histological type, tumoral grade or TNM stage of the tumours.

Although some variation in P450R activity in tumoral versus normal tissues was found in the majority of the samples studied, no significant differences could be demonstrated.

CITAÇÃO DO ARTIGO  Eur J Cancer. 1999 Feb;35(2):320-4

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