6533b85efe1ef96bd12bf364

RESEARCH PRODUCT

Platelet Activation: a New Biological Activity of Guinea-pig C3a Anaphylatoxin

Dieter Bitter-suermannStefan MeuerUlrich HaddingS. Becker

subject

Blood PlateletsAnaphylatoxinsSerotoninTime FactorsGuinea PigsImmunologychemical and pharmacologic phenomenaTritiumGuinea pigComplement Inactivator ProteinsAnimalsPlateletAnaphylatoxinInducerPlatelet activationComplement Inactivator ProteinsbiologyChemistryTemperatureBiological activityComplement C3General MedicineChromium RadioisotopesBiochemistrybiology.proteinAntibodyPeptides

description

3H-serotonin-release from labelled gp-platelets is established as a sensitive method for testing a new biological activity of gp-C3a anaphylatoxin in an autologous situation. Time-, dose- and temperature-dependent release reactions as well as specific inhibition by carboxypeptidase B and anti-C3a antibodies show that C3a is a potent and specific inducer of platelet activation. Inactive C3a does not induce 3H-serotonin-release but specifically inhibits the action of C3a on platelets.

https://doi.org/10.1111/j.1365-3083.1978.tb00441.x