Abstract:
:Apolipoprotein B (apoB) release from activated washed human platelets was measured by enzyme-linked immunosorbent assay (ELISA) using monospecific rabbit antibodies to human low density lipoprotein (LDL). Activation of platelets with thrombin, Ca2+-ionophore A23187 or stable analogue of prostaglandin endoperoxides U46619 stimulated release of approximately 20 ng apoB/10(8) platelets. Thrombin-induced apoB release was inhibited by the prostacyclin analogue carbacyclin. Dose-response curves of thrombin stimulation and carbacyclin inhibition of apoB and beta-thromboglobulin (beta-TG) release were very similar. Treatment of platelets with heparin did not remove significant amounts of apoB or affect the subsequent release of apoB induced by thrombin. The results of density gradient ultracentrifugation indicated that most of the apoB was released in the LDL density range. These data suggest that human platelets contain immunoreactive apoB, which can be released during platelet activation.
journal_name
Atherosclerosisjournal_title
Atherosclerosisauthors
Preobrazhensky SN,Podrez EA,Tsibulsky VP,Fuki IV,Mazurov AV,Repin VS,Smirnov VNdoi
10.1016/0021-9150(86)90140-1subject
Has Abstractpub_date
1986-09-01 00:00:00pages
213-7issue
3eissn
0021-9150issn
1879-1484pii
0021-9150(86)90140-1journal_volume
61pub_type
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