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Abstract
The interaction of platelets with surfaces coated with collagens of type III (C III)
or IV (C IV) has been studied by measuring the deposition of 51-Cr-labeled platelets
and by scanning electron microscopy (SEM). Experiments were performed using platelet-rich
plasma (PRP) and suspensions of gel-filtered platelets (GFP). Platelets were deposited
on C III mainly as surfacebound aggregates. In contrast they were deposited on C IV
mainly as spread forms of individual cells. Formation of aggregates on C III was more
extensive for PRP than for GFP; in contrast platelet spreading on C IV was more extensive
for GFP than for PRP. The effects of an extract of the plant feverfew on platelet-collagen
interactions were determined. Fever few extract inhibited the deposition of 51-Cr-labeled
platelets on both C III and C IV in a dose-dependent way. Similar concentrations of
extract were needed to inhibit the formation of surface-bound aggregates and to inhibit
platelet spreading in both PRP and GFP.
Keywords
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Article info
Publication history
Accepted:
September 24,
1987
Received:
March 3,
1987
Identification
Copyright
© 1987 Published by Elsevier Inc.