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British Journal of Cancer logoLink to British Journal of Cancer
. 1977 Aug;36(2):198–205. doi: 10.1038/bjc.1977.178

Further investigations of the effects of the hypoxic-cell radiosensitizer, Ro-07-0582, on local control of a mouse tumour.

P W Sheldon, S A Hill
PMCID: PMC2025479  PMID: 911657

Abstract

The tumour used, designated MT1, is a more radiosensitive form of the anaplastic MT tumour previously described. No explanation for the increased radiosensitivity was found, but it was shown not to be due to infection or to a change in immunological status, growth rate or histology. The sensitivity has remained constant throughout the present work. No cytotoxicity in the tumour was observed when 1 mg/g body weight of Ro-07-0582 was injected immediately after a single dose of X-rays; indeed a small protective effect was seen. A radiosensitization enhancement of 1-5 was achieved with a relatively low drug dose of Ro-07-0582 in a 5F/4d fractionated regime. The interval between the injection of a low dose of Ro-07-0582 and the start of irradiation was found to be critical, the optimum interval being 45-60 min. The subsequent incidence of distant metastases was not increased by the use of Ro-07-0582 at the time of "primary" tumour irradiation.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Adams G. E. Chemical radiosensitization of hypoxic cells. Br Med Bull. 1973 Jan;29(1):48–53. doi: 10.1093/oxfordjournals.bmb.a070956. [DOI] [PubMed] [Google Scholar]
  2. Adams G. E., Flockhart I. R., Smithen C. E., Stratford I. J., Wardman P., Watts M. E. Electron-affinic sensitization. VII. A correlation between structures, one-electron reduction potentials, and efficiencies of nitroimidazoles as hypoxic cell radiosensitizers. Radiat Res. 1976 Jul;67(1):9–20. [PubMed] [Google Scholar]
  3. Asquith J. C., Watts M. E., Patel K., Smithen C. E., Adams G. E. Electron affinic sensitization. V. Radiosensitization of hypoxic bacteria and mammalian cells in vitro by some nitroimidazoles and nitropyrazoles. Radiat Res. 1974 Oct;60(1):108–118. [PubMed] [Google Scholar]
  4. Brown J. M. Selective radiosensitization of the hypoxic cells of mouse tumors with the nitroimidazoles metronidazole and Ro 7-0582. Radiat Res. 1975 Dec;64(3):633–647. [PubMed] [Google Scholar]
  5. Denekamp J., Harris S. R. Tests of two electron-affinic radiosensitizers in vivo using regrowth of an experimental carcinoma. Radiat Res. 1975 Feb;61(2):191–203. [PubMed] [Google Scholar]
  6. Denekamp J., Harris S. R. The response of a transplantable tumor to fractionated irradiation. 1. X rays and the hypoxic cell radiosensitizer Ro-07-0582. Radiat Res. 1976 Apr;66(1):66–75. [PubMed] [Google Scholar]
  7. Dische S., Saunders M. I., Lee M. E., Adams G. E., Flockhart I. R. Clinical testing of the radiosensitizer Ro 07-0582: experience with multiple doses. Br J Cancer. 1977 May;35(5):567–579. doi: 10.1038/bjc.1977.90. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Foster J. L., Flockhart I. R., Dische S., Gray A., Lenox-Smith I., Smithen C. E. Serum concentration measurements in man of the radiosensitizer Ro-07-0582: some preliminary results. Br J Cancer. 1975 Jun;31(6):679–683. doi: 10.1038/bjc.1975.115. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Fowler J. F. Current aspects of radiobiology as applied to radiotherapy. Clin Radiol. 1972 Jul;23(3):257–262. doi: 10.1016/s0009-9260(72)80042-4. [DOI] [PubMed] [Google Scholar]
  10. Fowler J. F., Sheldon P. W., Begg A. C., Hill S. A., Smith A. M. Biological properties and response to x-rays of first-generation transplants of spontaneous mammary carcinomas in C3H mice. Int J Radiat Biol Relat Stud Phys Chem Med. 1975 May;27(5):463–480. doi: 10.1080/09553007514550461. [DOI] [PubMed] [Google Scholar]
  11. Hall E. J., Roizin-Towle L. Hypoxic sensitizers: radiobiological studies at the cellular level. Radiology. 1975 Nov;117(2):453–457. doi: 10.1148/117.2.453. [DOI] [PubMed] [Google Scholar]
  12. Hill S. A., Fowler J. F. Radiosensitizing and cytocidal effects on hypoxic cells of RO-07-0582, and repair of x-ray injury, in an experimental mouse tumour. Br J Cancer. 1977 Apr;35(4):461–469. doi: 10.1038/bjc.1977.69. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. Kallman R. F. The phenomenon of reoxygenation and its implications for fractionated radiotherapy. Radiology. 1972 Oct;105(1):135–142. doi: 10.1148/105.1.135. [DOI] [PubMed] [Google Scholar]
  14. McNally N. J., Sheldon P. W. The effect of radiation on tumour growth delay, cell survival and cure of the animal using a single tumour system. Br J Radiol. 1977 May;50(593):321–328. doi: 10.1259/0007-1285-50-593-321. [DOI] [PubMed] [Google Scholar]
  15. Moore B. A., Palcic B., Skarsgard L. D. Radiosensitizing and toxic effects on the 2-nitroimidazole Ro-07-0582 in hypoxic mammation cells. Radiat Res. 1976 Sep;67(3):459–473. [PubMed] [Google Scholar]
  16. Peters L. J. Letter: The potentiating effect of prior local irradiation of the lungs on the development of pulmonary metastases. Br J Radiol. 1974 Nov;47(563):827–829. doi: 10.1259/0007-1285-47-563-827. [DOI] [PubMed] [Google Scholar]
  17. Sheldon P. W., Foster J. L., Fowler J. F. Radiosensitization of C3H mouse mammary tumours by a 2-nitroimidazole drug. Br J Cancer. 1974 Dec;30(6):560–565. doi: 10.1038/bjc.1974.235. [DOI] [PMC free article] [PubMed] [Google Scholar]
  18. Sheldon P. W., Hill S. A., Foster J. L., Fowler J. F. Radiosensitization of C3H mouse mammary tumours using fractionated doses of x rays with the drug Ro-07-0582. Br J Radiol. 1976 Jan;49(577):76–80. doi: 10.1259/0007-1285-49-577-76. [DOI] [PubMed] [Google Scholar]
  19. Sheldon P. W., Hill S. A. Hypoxic cell radiosensitizers and local control by X-ray of a transplanted tumour in mice. Br J Cancer. 1977 Jun;35(6):795–808. doi: 10.1038/bjc.1977.121. [DOI] [PMC free article] [PubMed] [Google Scholar]
  20. Stone H. B., Withers H. R. Letter: Enhancement of the radioresponse of a murine tumour by a nitroimidazone. Br J Radiol. 1975 May;48(569):411–412. doi: 10.1259/0007-1285-48-569-411. [DOI] [PubMed] [Google Scholar]
  21. THOMLINSON R. H. An experimental method for comparing treatments of intact malignant tumours in animals and its application to the use of oxygen in radiotherapy. Br J Cancer. 1960 Sep;14:555–576. doi: 10.1038/bjc.1960.62. [DOI] [PMC free article] [PubMed] [Google Scholar]

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