Ethnic variation in red cell glutathione peroxidase activity
E Beutler and F Matsumoto
Glutathione peroxidase activity was measured in blood and cultured
fibroblasts from healthy persons of several different population groups.
Individuals of Jewish ancestry and others of Mediterranean origin were
found to manifest a decrease of red cell but not of leukocyte or fibroblast
enzyme activity. Oriental populations differed in that the scatter in red
cell enzyme activity was significantly lower than in Occidental
populations. The erythrocyte enzyme of individuals with low activity was
found to be less stable to heating than was the enzyme from persons with
high activity. As a possible explanation for these data, a provisional
genetic model is presented: a low GSH Px allele with a frequency of 0.556
in the Jewish population and of only 0.181 in the United States-Northern
European population. Our results suggest that an association between GSH Px
deficiency and hemolytic anemia need not represent a cause-and-effect
relationship.
Volume 46,
Issue 1,
pp. 103-110,
07/01/1975
Copyright © 1975 by The American Society of Hematology