{"title":"血小板中神经氨酸酶的去酰化作用，死亡之吻还是苦乐参半？","authors":"Nora Butta, Dianne E van der Wal","doi":"10.1097/MOH.0000000000000815","DOIUrl":null,"url":null,"abstract":"<p><strong>Purpose of review: </strong>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.</p><p><strong>Recent findings: </strong>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.</p><p><strong>Summary: </strong>Since platelet desialylation occurs in various healthy and pathological conditions, measuring desialylation might be a new diagnostic tool.</p>","PeriodicalId":55196,"journal":{"name":"Current Opinion in Hematology","volume":" ","pages":"43-51"},"PeriodicalIF":3.1000,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Desialylation by neuraminidases in platelets, kiss of death or bittersweet?\",\"authors\":\"Nora Butta, Dianne E van der Wal\",\"doi\":\"10.1097/MOH.0000000000000815\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Purpose of review: </strong>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.</p><p><strong>Recent findings: </strong>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.</p><p><strong>Summary: </strong>Since platelet desialylation occurs in various healthy and pathological conditions, measuring desialylation might be a new diagnostic tool.</p>\",\"PeriodicalId\":55196,\"journal\":{\"name\":\"Current Opinion in Hematology\",\"volume\":\" \",\"pages\":\"43-51\"},\"PeriodicalIF\":3.1000,\"publicationDate\":\"2025-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Current Opinion in Hematology\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.1097/MOH.0000000000000815\",\"RegionNum\":3,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2024/8/30 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q2\",\"JCRName\":\"HEMATOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Current Opinion in Hematology","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1097/MOH.0000000000000815","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/8/30 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"HEMATOLOGY","Score":null,"Total":0}
Desialylation by neuraminidases in platelets, kiss of death or bittersweet?
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.
期刊介绍：
Current Opinion in Hematology is an easy-to-digest bimonthly journal covering the most interesting and important advances in the field of hematology. Its hand-picked selection of editors ensure the highest quality selection of unbiased review articles on themes from nine key subject areas, including myeloid biology, Vascular biology, hematopoiesis and erythroid system and its diseases.
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