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Cell culture conditions potentiate differences in the response to ionising radiation of peripheral blood leukocytes isolated from breast cancer patients and healthy subjects

Нема приказа
Аутори
Adžić, Miroslav
Niciforovic, Ana
Zarić, Božidarka
Neskovic-Konstatinovic, Zora
Spasić, Snežana D.
Jones, David R.
Radoičić, Marija B.
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Апстракт
To compare the effects of ionising radiation on leukocytes from breast cancer patients and healthy subjects ex vivo, the level of NF-kappa B and the antioxidant enzymes manganese-containing superoxide dismutase (Mn-SOD), copper/zinc-containing superoxide dismutase (CuZn-SOD) and catalase (CAT) in combination with flow cytometric analysis of CD4(+) lymphocytes was performed. The level of Mn-SOD protein was significantly increased in the breast cancer study group both before (P LT 0.001) and after (P LT 0.001) irradiation when compared with healthy subjects. Measurements in parallel indicated that the level of CAT protein was significantly higher in the breast cancer study group after irradiation (2 Gy [P LT 0.001] and 9 Gy [P LT 0.05]) when compared with healthy subjects. Although the initial number of lymphocytes in the blood of breast cancer patients was not different from healthy subjects, the percentage of apoptotic CD4(+) cells was significantly (P LT 0.001) lower both before and a...fter irradiation indicating that cell culture conditions induced radioresistance of CD4(+) cells in the blood of breast cancer patients. The data presented in this current study indicate that brief ex vivo culture of peripheral blood leukocytes potentiates oxidative stress imposed by a breast cancer tumour.

Кључне речи:
ionising radiation / leukocytes / breast cancer / superoxide dismutase / catalase
Извор:
Redox Report, 2008, 13, 1, 17-22

DOI: 10.1179/135100008X259088

ISSN: 1351-0002 (print)

PubMed: 18284847

WoS: 000257499600003

Scopus: 2-s2.0-41149143150
[ Google Scholar ]
URI
http://vinar.vin.bg.ac.rs/123456789/3490
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