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Effect of hypothermia on radiation-induced micronuclei and delay of cell cycle progression in TK6 cells
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för molekylär biovetenskap, Wenner-Grens institut.
Vise andre og tillknytning
2014 (engelsk)Inngår i: International Journal of Radiation Biology, ISSN 0955-3002, E-ISSN 1362-3095, Vol. 90, nr 4, s. 318-324Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Purpose: Low temperature (hypothermia) during irradiation leads to a reduced frequency of micronuclei in TK6 cells and it has been suggested that perturbation of cell cycle progression is responsible for this effect. The aim of the study was to test this hypothesis. Materials and methods: Human lymphoblastoid TK6 cells were treated by a combination of hypothermia (0.8 degrees C) and ionizing radiation in varying order (hypothermia before, during or after irradiation) and micronuclei were scored. Growth assay and two-dimensional flow cytometry was used to analyze cell cycle kinetics following irradiated of cells at 0.8 degrees C or 37.0 degrees C. Results: The temperature effect was observed at the level of micronuclei regardless of whether cells were cooled during or immediately before or after the radiation exposure. No indication of cell cycle perturbation by combined exposure to hypothermia and radiation could be detected. Conclusions: The protective effect of hypothermia observed at the level of cytogenetic damage was not due to a modulation of cell cycle progression. A possible alternative mechanism and experiments to test it are discussed.

sted, utgiver, år, opplag, sider
2014. Vol. 90, nr 4, s. 318-324
Emneord [en]
Hypothermia, temperature, cell cycle, micronuclei
HSV kategori
Identifikatorer
URN: urn:nbn:se:su:diva-103285DOI: 10.3109/09553002.2014.887233ISI: 000333582100007OAI: oai:DiVA.org:su-103285DiVA, id: diva2:718211
Merknad

AuthorCount:8;

Tilgjengelig fra: 2014-05-20 Laget: 2014-05-12 Sist oppdatert: 2017-12-05bibliografisk kontrollert

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Brehwens, KarlHaghdoost, SiamakWojcik, Andrzej
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