Title : Pharmacological control of human basophil histamine release stimulated by eosinophil granule major basic protein.

Pub. Date : 1989 Apr

PMID : 2469646






5 Functional Relationships(s)
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1 Eosinophil granule major basic protein (MBP) is a 13,800 MW arginine-rich polypeptide that is unique among basic molecules in its ability to stimulate human basophil histamine release. Histamine myelin basic protein Homo sapiens
2 We examined the Ca2+ requirements and pharmacological regulation of MBP-stimulated histamine release. Histamine myelin basic protein Homo sapiens
3 Minimal MBP-induced histamine release occurred in the absence of extracellular Ca2+, whereas addition of 0.1 mM Ca2+ resulted in 70% of the maximum histamine release response. Histamine myelin basic protein Homo sapiens
4 The MBP-induced histamine release was blocked by a calmodulin antagonist and by theophylline and was partially inhibited by an inhibitor of phospholipase A2. Histamine myelin basic protein Homo sapiens
5 Histamine release stimulated by a 13,900 MW poly-L-arginine exhibited a dissimilar pharmacological profile from that of MBP. Histamine myelin basic protein Homo sapiens