Biomaterial Database

p-Bromophenacyl bromide potentiates hydrogen peroxide formation in human platelets challenged by thrombin and inhibits aggregation. 1993

G Leoncini, and B Aprile, and M Maresca

Istituto Policattedra di Chimica Biologica, Università di Genova, Italy.

p-Bromophenacyl bromide, a potent alkylating agent inhibitor of phospholipase A2 and adenylate cyclase, potentiates hydrogen peroxide production in human platelets activated with thrombin. The maximal cooperative effect, specific for thrombin as inducer and potentiated by exogenous calcium, was observed at 2 microM BPB. Since it was shown that BPB is also a strong inhibitor of platelet aggregation (IC 50 = 3 +/- 1 microM) it is likely to suppose that the abnormal accumulation of hydrogen peroxide can influence platelet function.

UI	MeSH Term	Description	Entries
D010741	Phospholipases A	Phospholipases that hydrolyze one of the acyl groups of phosphoglycerides or glycerophosphatidates.
D010974	Platelet Aggregation	The attachment of PLATELETS to one another. This clumping together can be induced by a number of agents (e.g., THROMBIN; COLLAGEN) and is part of the mechanism leading to the formation of a THROMBUS.	Aggregation, Platelet
D001792	Blood Platelets	Non-nucleated disk-shaped cells formed in the megakaryocyte and found in the blood of all mammals. They are mainly involved in blood coagulation.	Platelets,Thrombocytes,Blood Platelet,Platelet,Platelet, Blood,Platelets, Blood,Thrombocyte
D004357	Drug Synergism	The action of a drug in promoting or enhancing the effectiveness of another drug.	Drug Potentiation,Drug Augmentation,Augmentation, Drug,Augmentations, Drug,Drug Augmentations,Drug Potentiations,Drug Synergisms,Potentiation, Drug,Potentiations, Drug,Synergism, Drug,Synergisms, Drug
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D006861	Hydrogen Peroxide	A strong oxidizing agent used in aqueous solution as a ripening agent, bleach, and topical anti-infective. It is relatively unstable and solutions deteriorate over time unless stabilized by the addition of acetanilide or similar organic materials.	Hydrogen Peroxide (H2O2),Hydroperoxide,Oxydol,Perhydrol,Superoxol,Peroxide, Hydrogen
D000098	Acetophenones	Derivatives of the simplest aromatic ketone acetophenone (of general formula C6H5C(O)CH3).
D013050	Spectrometry, Fluorescence	Measurement of the intensity and quality of fluorescence.	Fluorescence Spectrophotometry,Fluorescence Spectroscopy,Spectrofluorometry,Fluorescence Spectrometry,Spectrophotometry, Fluorescence,Spectroscopy, Fluorescence
D013917	Thrombin	An enzyme formed from PROTHROMBIN that converts FIBRINOGEN to FIBRIN.	Thrombase,Thrombin JMI,Thrombin-JMI,Thrombinar,Thrombostat,alpha-Thrombin,beta,gamma-Thrombin,beta-Thrombin,gamma-Thrombin,JMI, Thrombin
D015539	Platelet Activation	A series of progressive, overlapping events, triggered by exposure of the PLATELETS to subendothelial tissue. These events include shape change, adhesiveness, aggregation, and release reactions. When carried through to completion, these events lead to the formation of a stable hemostatic plug.	Activation, Platelet,Activations, Platelet,Platelet Activations