In rabbits receiving whole body irradiation with
60Co in a single dose of 800R, a dose alleged to represent the LD
50 for this animal species, a study was made of the time course of consequent changes in serum proteins and immunoglobulins as estimated by electrophoresis and immunoelectrophoresis respectively.
The results obtained are as follows:
1) Serum albumin decreased in all cases, its response occurring immediately after irradiation.
2) The serum α
1-globulin level showed no definite tendency, whereas there was a rise in serum α
2-globulin level in almost all cases, with a peak attained around the 2nd day after irradiation.
3) Serum β-globulin was the fraction that responded most distinctly, beginning to increase shortly after irradiation and reaching the maximum around the 5th day.
4) The serum γ-globulin level varied in no consistent fashion, although it declined transiently immediately after irradiation in more than half the cases.
5) The present study suggests that lowered albumin and elevated α- and β-globulin levels may be characteristic of the pattern of radiation-induced variations in serum protein fractions.
6) Immunoelectrophoretically, there was noted an increase in transferrin, and no appreciable change was observed in IgG, IgM or IgA.
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