{"title":"胎儿素a通过与血小板上的TLR-4结合而增加非酒精性脂肪性肝病的血栓形成风险","authors":"Peng Zhang, Zhiyong Qi, Huajie Xu, Luning Zhou, Xin Zhao, Haoxuan Zhong, Wenxuan Zhou, Bing Fan, Hongyi Wu, Junbo Ge","doi":"10.1093/cvr/cvaf096","DOIUrl":null,"url":null,"abstract":"Aims Fetuin-A, a liver-derived heterodimeric plasma glycoprotein, exhibits abnormal elevation in non-alcoholic fatty liver disease (NAFLD). Plasma fetuin-A levels correlate closely with both morbidity and mortality associated with cardiovascular diseases. However, the precise influence of fetuin-A on NAFLD-related platelet activation and thrombosis remains to be elucidated. Methods and results Fetuin-A directly amplified agonist-induced platelet aggregation, dense granule adenosine triphosphate release, P-selectin exposure, integrin αIIbβ3 activation, spreading, and clot retraction. Mechanistically, fetuin-A bound to platelet Toll-like receptor-4 (TLR-4), activating TLR-4/MyD88, SFK/PI3 K/AKT, cGMP/PKG, and mitogen-activated protein kinase signalling pathways to enhance platelet activation. TLR-4 specific antagonist TAK-242 and TLR-4-deficient mice confirmed the TLR-4 dependence of these effects. Oral administration of firsocostat, rosuvastatin, or pioglitazone demonstrated efficacy in alleviating thrombosis formation in NAFLD mice by reducing fetuin-A levels and attenuating platelet hyperreactivity. Notably, the fetuin-A-inhibiting antibody potently suppressed platelet activation and inhibited thrombosis formation in NAFLD mice. Administration of this antibody attenuated thromboembolism and microvascular thrombosis in NAFLD mice, thereby safeguarding the lung, heart, and brain from exacerbated tissue infarcts. Finally, a positive correlation between plasma fetuin-A concentration and platelet aggregation was observed in NAFLD patients. Conclusion Fetuin-A emerges as a positive regulator of platelet hyperreactivity in NAFLD. Acting via TLR-4-dependent signalling pathways, plasma fetuin-A directly amplifies platelet activation and promotes in vivo thrombosis. Firsocostat, rosuvastatin, and pioglitazone abrogate these enhancing effects by reducing fetuin-A levels. The fetuin-A-inhibiting antibody presents potential therapeutic advantages to prevent thrombotic complications in NAFLD.","PeriodicalId":9638,"journal":{"name":"Cardiovascular Research","volume":"22 1","pages":""},"PeriodicalIF":10.2000,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Fetuin-A increases thrombosis risk in non-alcoholic fatty liver disease by binding to TLR-4 on platelets\",\"authors\":\"Peng Zhang, Zhiyong Qi, Huajie Xu, Luning Zhou, Xin Zhao, Haoxuan Zhong, Wenxuan Zhou, Bing Fan, Hongyi Wu, Junbo Ge\",\"doi\":\"10.1093/cvr/cvaf096\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Aims Fetuin-A, a liver-derived heterodimeric plasma glycoprotein, exhibits abnormal elevation in non-alcoholic fatty liver disease (NAFLD). Plasma fetuin-A levels correlate closely with both morbidity and mortality associated with cardiovascular diseases. However, the precise influence of fetuin-A on NAFLD-related platelet activation and thrombosis remains to be elucidated. Methods and results Fetuin-A directly amplified agonist-induced platelet aggregation, dense granule adenosine triphosphate release, P-selectin exposure, integrin αIIbβ3 activation, spreading, and clot retraction. Mechanistically, fetuin-A bound to platelet Toll-like receptor-4 (TLR-4), activating TLR-4/MyD88, SFK/PI3 K/AKT, cGMP/PKG, and mitogen-activated protein kinase signalling pathways to enhance platelet activation. TLR-4 specific antagonist TAK-242 and TLR-4-deficient mice confirmed the TLR-4 dependence of these effects. Oral administration of firsocostat, rosuvastatin, or pioglitazone demonstrated efficacy in alleviating thrombosis formation in NAFLD mice by reducing fetuin-A levels and attenuating platelet hyperreactivity. Notably, the fetuin-A-inhibiting antibody potently suppressed platelet activation and inhibited thrombosis formation in NAFLD mice. Administration of this antibody attenuated thromboembolism and microvascular thrombosis in NAFLD mice, thereby safeguarding the lung, heart, and brain from exacerbated tissue infarcts. Finally, a positive correlation between plasma fetuin-A concentration and platelet aggregation was observed in NAFLD patients. Conclusion Fetuin-A emerges as a positive regulator of platelet hyperreactivity in NAFLD. Acting via TLR-4-dependent signalling pathways, plasma fetuin-A directly amplifies platelet activation and promotes in vivo thrombosis. Firsocostat, rosuvastatin, and pioglitazone abrogate these enhancing effects by reducing fetuin-A levels. The fetuin-A-inhibiting antibody presents potential therapeutic advantages to prevent thrombotic complications in NAFLD.\",\"PeriodicalId\":9638,\"journal\":{\"name\":\"Cardiovascular Research\",\"volume\":\"22 1\",\"pages\":\"\"},\"PeriodicalIF\":10.2000,\"publicationDate\":\"2025-06-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Cardiovascular Research\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.1093/cvr/cvaf096\",\"RegionNum\":1,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CARDIAC & CARDIOVASCULAR SYSTEMS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Cardiovascular Research","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1093/cvr/cvaf096","RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CARDIAC & CARDIOVASCULAR SYSTEMS","Score":null,"Total":0}
Fetuin-A increases thrombosis risk in non-alcoholic fatty liver disease by binding to TLR-4 on platelets
Aims Fetuin-A, a liver-derived heterodimeric plasma glycoprotein, exhibits abnormal elevation in non-alcoholic fatty liver disease (NAFLD). Plasma fetuin-A levels correlate closely with both morbidity and mortality associated with cardiovascular diseases. However, the precise influence of fetuin-A on NAFLD-related platelet activation and thrombosis remains to be elucidated. Methods and results Fetuin-A directly amplified agonist-induced platelet aggregation, dense granule adenosine triphosphate release, P-selectin exposure, integrin αIIbβ3 activation, spreading, and clot retraction. Mechanistically, fetuin-A bound to platelet Toll-like receptor-4 (TLR-4), activating TLR-4/MyD88, SFK/PI3 K/AKT, cGMP/PKG, and mitogen-activated protein kinase signalling pathways to enhance platelet activation. TLR-4 specific antagonist TAK-242 and TLR-4-deficient mice confirmed the TLR-4 dependence of these effects. Oral administration of firsocostat, rosuvastatin, or pioglitazone demonstrated efficacy in alleviating thrombosis formation in NAFLD mice by reducing fetuin-A levels and attenuating platelet hyperreactivity. Notably, the fetuin-A-inhibiting antibody potently suppressed platelet activation and inhibited thrombosis formation in NAFLD mice. Administration of this antibody attenuated thromboembolism and microvascular thrombosis in NAFLD mice, thereby safeguarding the lung, heart, and brain from exacerbated tissue infarcts. Finally, a positive correlation between plasma fetuin-A concentration and platelet aggregation was observed in NAFLD patients. Conclusion Fetuin-A emerges as a positive regulator of platelet hyperreactivity in NAFLD. Acting via TLR-4-dependent signalling pathways, plasma fetuin-A directly amplifies platelet activation and promotes in vivo thrombosis. Firsocostat, rosuvastatin, and pioglitazone abrogate these enhancing effects by reducing fetuin-A levels. The fetuin-A-inhibiting antibody presents potential therapeutic advantages to prevent thrombotic complications in NAFLD.
期刊介绍:
Cardiovascular Research
Journal Overview:
International journal of the European Society of Cardiology
Focuses on basic and translational research in cardiology and cardiovascular biology
Aims to enhance insight into cardiovascular disease mechanisms and innovation prospects
Submission Criteria:
Welcomes papers covering molecular, sub-cellular, cellular, organ, and organism levels
Accepts clinical proof-of-concept and translational studies
Manuscripts expected to provide significant contribution to cardiovascular biology and diseases