Oncogenic transformation by fractionated doses of neutrons. 1988

R C Miller, and D J Brenner, and C R Geard, and K Komatsu, and S A Marino, and E J Hall
Department of Radiation Oncology, College of Physicians & Surgeons, Columbia University, New York, New York 10032.

Oncogenic transformation was assayed after C3H 10T1/2 cells were irradiated with monoenergetic neutrons; cells were exposed to 0.23-, 0.35-, 0.45-, 5.9-, and 13.7-MeV neutrons given singly or in five equal fractions over 8 h. At the biologically effective neutron energy of 0.45 MeV, enhancement of transformation was evident with some small fractionated doses (below 1 Gy). When transformation was examined as a function of neutron energy at 0.5 Gy, enhancement was seen for cells exposed to three of the five energies (0.35, 0.45, and 5.9 MeV). Enhancement was greatest for cells irradiated with 5.9-MeV neutrons. Of the neutron energies examined, 5.9-MeV neutrons had the lowest dose-averaged lineal energy and linear energy transfer. This suggests that enhancement of transformation by fractionated low doses of neutrons may be radiation-quality dependent.

UI MeSH Term Description Entries
D009502 Neutrons Electrically neutral elementary particles found in all atomic nuclei except light hydrogen; the mass is equal to that of the proton and electron combined and they are unstable when isolated from the nucleus, undergoing beta decay. Slow, thermal, epithermal, and fast neutrons refer to the energy levels with which the neutrons are ejected from heavier nuclei during their decay. Neutron
D011829 Radiation Dosage The amount of radiation energy that is deposited in a unit mass of material, such as tissues of plants or animal. In RADIOTHERAPY, radiation dosage is expressed in gray units (Gy). In RADIOLOGIC HEALTH, the dosage is expressed by the product of absorbed dose (Gy) and quality factor (a function of linear energy transfer), and is called radiation dose equivalent in sievert units (Sv). Sievert Units,Dosage, Radiation,Gray Units,Gy Radiation,Sv Radiation Dose Equivalent,Dosages, Radiation,Radiation Dosages,Units, Gray,Units, Sievert
D002460 Cell Line Established cell cultures that have the potential to propagate indefinitely. Cell Lines,Line, Cell,Lines, Cell
D002471 Cell Transformation, Neoplastic Cell changes manifested by escape from control mechanisms, increased growth potential, alterations in the cell surface, karyotypic abnormalities, morphological and biochemical deviations from the norm, and other attributes conferring the ability to invade, metastasize, and kill. Neoplastic Transformation, Cell,Neoplastic Cell Transformation,Transformation, Neoplastic Cell,Tumorigenic Transformation,Cell Neoplastic Transformation,Cell Neoplastic Transformations,Cell Transformations, Neoplastic,Neoplastic Cell Transformations,Neoplastic Transformations, Cell,Transformation, Cell Neoplastic,Transformation, Tumorigenic,Transformations, Cell Neoplastic,Transformations, Neoplastic Cell,Transformations, Tumorigenic,Tumorigenic Transformations
D005214 Fast Neutrons Neutrons, the energy of which exceeds some arbitrary level, usually around one million electron volts. Fast Neutron,Neutron, Fast,Neutrons, Fast
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D051379 Mice The common name for the genus Mus. Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus

Related Publications

R C Miller, and D J Brenner, and C R Geard, and K Komatsu, and S A Marino, and E J Hall
February 1989, Radiation research,
R C Miller, and D J Brenner, and C R Geard, and K Komatsu, and S A Marino, and E J Hall
May 1994, Radiation research,
R C Miller, and D J Brenner, and C R Geard, and K Komatsu, and S A Marino, and E J Hall
January 1979, Cancer research,
R C Miller, and D J Brenner, and C R Geard, and K Komatsu, and S A Marino, and E J Hall
October 1983, International journal of radiation biology and related studies in physics, chemistry, and medicine,
R C Miller, and D J Brenner, and C R Geard, and K Komatsu, and S A Marino, and E J Hall
June 1985, Radiation research,
R C Miller, and D J Brenner, and C R Geard, and K Komatsu, and S A Marino, and E J Hall
April 1974, European journal of cancer,
R C Miller, and D J Brenner, and C R Geard, and K Komatsu, and S A Marino, and E J Hall
May 1974, European journal of cancer,
R C Miller, and D J Brenner, and C R Geard, and K Komatsu, and S A Marino, and E J Hall
March 1991, Radiation research,
R C Miller, and D J Brenner, and C R Geard, and K Komatsu, and S A Marino, and E J Hall
October 1991, Radiation research,
R C Miller, and D J Brenner, and C R Geard, and K Komatsu, and S A Marino, and E J Hall
July 1983, Radiation research,
Copied contents to your clipboard!