Blood, 1970, Vol. 35, No. 5, pp. 659-668.
© 1970 American Society of Hematology, Inc.
The Effect of Chromium on Platelet Function In Vitro
HERMAN E. KATTLOVE 1 and
THEODORE H. SPAET 1
1 Montefiore Hospital and Medical Center, Bronx, N. Y.
Sodium chromate inhibits platelet function in vitro. The primary effect is inhibition of connective tissue-induced aggregation. In addition, the primary
wave of epinephrine-induced aggregation is moderately inhibited and
adenosine diphosphate-induced aggregation is mildly inhibited. The effect on
connective tissue-induced aggregation is due to inhibition of the platelet "release reaction"; chromate inhibited the release of adenine nucleotides, 14C
labeled serotonin and the activation of platelet factor III normally caused by
connective tissue. The amount of chromium which must be bound to platelets
to inhibit aggregation is 10-100 times the amount of radioactive chromium
bound to platelets under the usual conditions of labeling for survival studies.
However, this does not imply that chromium labeled platelets function
normally.