Butta N, van der Wal DE. Desialylation by neuraminidases in platelets, kiss of death or bittersweet?
Curr Opin Hematol 2024:00062752-990000000-00068. [PMID:
38529832 DOI:
10.1097/moh.0000000000000815]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
PURPOSE OF REVIEW
Loss of surface sialic acid by neuraminidases is known as 'desialylation'. Platelets are desialylated in bacterial or viral infections, during storage, senescence, various mutations, platelet auto antibodies, hemostasis and shear stress. In this review the recent literature on the different sialic acid capped glycan structures will be covered as well as platelet desialylation in inherited glycan disorders and induced by external neuraminidases.
RECENT FINDINGS
Neuraminidases are released from platelet intracellular stores and translocated to the platelet surface. Apart from clearance, loss of surface sialic acid by neuraminidases ('desialylation') affects platelet signaling including ligand binding and their procoagulant function. Platelets are also desialylated in infections, various mutations, presence of platelet auto antibodies.
SUMMARY
Since platelet desialylation occurs in various healthy and pathological conditions, measuring desialylation might be a new diagnostic tool.
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