Differential action on cancer and normal tissue by adrenochrome monoaminoguanidine methanesulfonate and cytochrome C combined with radiotherapy

Journal Article · Wed Jun 15 00:00:00 EDT 1994 · International Journal of Radiation Oncology, Biology and Physics; (United States)

DOI:https://doi.org/10.1016/0360-3016(94)90472-3· OSTI ID:7099938

Nakatsugawa, S ^[1]; Sugahara, T ^[2]

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1. Fukui Medical School (Japan)
2. Health Research Foundation, Kyoto (Japan)

The possibility that radioprotective effects on potent natural killer (NK) cells by adrenochrome monoaminoguanidine methanesulfonate (AMM) + cytochrome C during radiotherapy (RT) for lung cancer might result in the radiosensitization of human lung cancer cells in vivo is examined. Human lung cancer xenografts in the right hind legs of KSN mice (10 weeks old) were locally irradiated with 20 Gy of X ray. AMM (10 mg/kg/day) and/or cytochrome C (CCC) (5 mg/kg/day) were given intraperitoneally immediately before or after RT, followed by daily administration for 4 days. Natural killer activities of host splenocytes were also tested with the standard [sup 51]Cr releasing assay with YAC-1 cells as target cells. In a clinical study, 65 patients with lung cancer were treated with more than 50 Gy of RT with or without combination with AMM + CCC, OK-432 or AMM + CCC + OK-432. Before and after RT, lymphocyte subsets in the peripheral blood were examined with dichromatic analysis using an Ortho Spectrum IIIFCM system and fluorescent MABs. In this study, the change in the absolute number of each subset was investigated. AMM + cytochrome C augumented NK activity in KSN nude mice, protected potent NK cells in patients with lung cancer against RT and sensitized the human lung cancer xenografts to RT. AMM + cytochrome C may have potential as a differential modulator of radiosensitivity of normal tissues and of tumors. 8 refs., 2 figs., 1 tab.

• OSTI ID: 7099938
• Journal Information: International Journal of Radiation Oncology, Biology and Physics; (United States), Vol. 29:3; ISSN 0360-3016
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
NEOPLASMS
RADIOSENSITIVITY
TISSUES
GUANIDINES
NATURAL KILLER CELLS
RADIOPROTECTIVE SUBSTANCES
BIOLOGICAL MATERIALS
BLOOD
BLOOD CELLS
BODY
BODY FLUIDS
CARBONIC ACID DERIVATIVES
DISEASES
DRUGS
LEUKOCYTES
MATERIALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
560152* - Radiation Effects on Animals- Animals