Abstract:
:The ranges for near-threshold ADP concentrations for the aggregation of macaque and human citrated platelets overlapped. The minimum concentrations of epinephrine, 0.05 microM to 1.0 microM, that at least doubled the aggregation response at threshold ADP concentrations were comparable for macaque and human citrated platelets. Epinephrine (1.0 microM to 10 mM) alone never aggregated macaque citrated platelets. Biphasic aggregation occurred with both macaque and human citrated platelets. The addition of heparin to a final concentration of 2.2 units/ml had no effect on the threshold ADP concentrations or the sensitivity of macaque or human citrated platelets to epinephrine. One microM phentolamine eliminated the potentiating effect of 1 microM epinephrine on ADP-induced aggregation of macaque and human citrated platelets. The threshold concentrations of ADP for macaque platelets were sharply reduced when heparin was used as an anticoagulant rather than citrate. However, epinephrine induced a similar increase in aggregability with both citrated and heparinized platelets, 0.55 +/- 0.09 SEM% and 0.44 +/- 0.09 SEM%, respectively. These data indicate that macaque and human platelets behave in a similar manner in response to ADP and that epinephrine potentiates the ADP-induced aggregation of macaque and human platelets equally well.
journal_name
Atherosclerosisjournal_title
Atherosclerosisauthors
Beatty CH,Howard CF Jr,Caruso Vdoi
10.1016/0021-9150(86)90003-1subject
Has Abstractpub_date
1986-05-01 00:00:00pages
111-8issue
2eissn
0021-9150issn
1879-1484pii
0021-9150(86)90003-1journal_volume
60pub_type
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