Change of Number and Size of Blood Platelets in Breast=fed Infants and Intensity of Arakawa's Reaction of Their Mothers on Vitamin B Administration

130th Report of the Peroxidase Reaction

抄録

1. In a healthy infant and a healthy adult not a change of blood platelets was seen on an administration of a large amount of vitamin B.
2. B-avitaminotic infants fed on human milk negative to Arakawa's reaction showed an anemia and thrombocytosis.
3. When vitamin B was administered to babies and their mothers, blood platelet count showed a decrease, and anemia began to recover in parallel with an increase in the intensity of Arakawa's reaction.
4. There were some cases in which platelet count returned to normal in spite of the fact that Arakawa's reaction of mother's milk remained negative. This is not strange if Takamatsu's¹⁰⁾ and others' works are taken into consideration.
5. Blood platelets decrease more rapidly on an administration of vitamin B to both infants and their mothers than on an administration to the former only.
6. As to the classification of platelets, large platelets showed a decrease at first and small platelets began to increase and then returned to the normal ratio of platelets on vitamin B administration.