نتایج جستجو برای: platelets
تعداد نتایج: 44753 فیلتر نتایج به سال:
Platelets roll on stimulated endothelium in vivo: an interaction mediated by endothelial P-selectin.
P-selectin, found in storage granules of platelets and endothelial cells, can be rapidly expressed upon stimulation. Mice lacking this membrane receptor exhibit a severe impairment of leukocyte rolling. We observed that, in addition to leukocytes, platelets were rolling in mesenteric venules of wild-type mice. To investigate the role of P-selectin in this process, resting or activated platelets...
2-Aminoethylisothiouronium bromide (AET) increases the sensitivity of blood cells to complement-mediated immune lysis. We compared the sensitivities of untreated or AET-treated platelets to immune lysis induced by different types of platelet antibody in the 51Cr platelet lysis test. AET platelets were 8-16 times more sensitive to autoantibody and alloantibody, but 8-16 times less sensitive to d...
Exposure of horse platelets to thrombin has been reported to cause nearly complete inactivation of cyclooxygenase within 30 sec. This contrasts with the observation that human platelets, depleted of their granule constituents by stimulation with thrombin, still aggregate in response to arachidonic acid, a reaction presumably mediated by thromboxane A2 (TxA2) formation. Because of this conflicti...
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