Urinary Excretion of Histamine and Histamine Metabolites in Leukaemia

Berg, Bertel; Granérus, Göran; Westling, H.; White, Thomas E.

doi:10.1111/j.1600-0609.1971.tb02672.x

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1978

1991

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Cited by 17 publications

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Inhibition of platelet aggregation with histamine

1980

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A sensitive in vitro technique was used to demonstrate the inhibitory effects of histamine or human blood platelets. Platelet aggregation by epinephrine was completely inhibited at 10(-3) M concentrations of histamine. Persistent elevations of cyclic AMP levels were shown to occur in the platelets when histamine was added and corresponded to the inhibitory effects on platelet aggregation. In contradistinction to the analogous inhibitory effects by histamine on other cellular elements of the hematopoietic system, this inhibitory effect on platelets could not be blocked by equimolar concentrations of either of the classes of histamine antagonists presently available. It is suggested that there may be other additional histamine receptors on the surface of membranes of platelets or that histamine mediated its inhibitory effect on platelets through a mechanism other than surface receptors.

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