[Some clinical outcomes of fractional gamma-irradiation of primates].

The investigation with macaque-rhesus males aged 3 to 5 years was aimed at evaluation of the effects of 2 patterns of fractional gamma-irradiation ending up with an equal effective residual dose of 100 sGy. Irradiation was carried out on gamma-ray unit GOBO-60 with a 137Cs source and certified activity of 72 g-eq. Ra. Rectal temperature, heart rate, blood pressure and body mass were followed up over the period of 9 months. Rate of body mass gain in primates irradiated with the total gamma-dose of 250 cSv was lower as compared to the group that received the total dose of 132 cSv. Repeated irradiation 3 months later elevated the body mass gain and elevated rectal temperature considerably only in the primates that had been initially irradiated at 250 cSV Fractional gamma-irradiation had no effect on HR or BP.