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Branched endovascular aortic aneurysm repair decreases platelet reactivity and platelet-rich thrombus formation - a prospective, cohort study.
IF 2.5 3区 医学
Platelets Pub Date : 2025-12-01 Epub Date: 2025-02-10 DOI: 10.1080/09537104.2025.2458622
Aleksandra Gąsecka, Ewelina Błażejowska, Agata Konieczka, Mateusz Leśniewski, Magdalena Ostaszewska, Michał Łomiak, Magdalena Gajewska, Sylwester Rogula, Łukasz Szarpak, Krzysztof J Filipiak, Mateusz Zawadka, Katarzyna Jama, Paweł Andruszkiewicz, Marcin Grabowski, Tomasz Jakimowicz
{"title":"Branched endovascular aortic aneurysm repair decreases platelet reactivity and platelet-rich thrombus formation - a prospective, cohort study.","authors":"Aleksandra Gąsecka, Ewelina Błażejowska, Agata Konieczka, Mateusz Leśniewski, Magdalena Ostaszewska, Michał Łomiak, Magdalena Gajewska, Sylwester Rogula, Łukasz Szarpak, Krzysztof J Filipiak, Mateusz Zawadka, Katarzyna Jama, Paweł Andruszkiewicz, Marcin Grabowski, Tomasz Jakimowicz","doi":"10.1080/09537104.2025.2458622","DOIUrl":"https://doi.org/10.1080/09537104.2025.2458622","url":null,"abstract":"<p><p>Appropriate platelet function determines both the perioperative haemostasis and the risk of postoperative thrombotic complications in patients undergoing branched endovascular repair (bEVAR) of thoracoabdominal aortic aneurysm (TAAA). We aimed to assess the effect of bEVAR on platelet function and the predictive value of preoperative platelet function for postoperative bleeding. We measured platelet function using impedance aggregometry and total thrombus-formation analysis system in 50 consecutive patients, with TAAA undergoing elective bEVAR. After bEVAR, platelet reactivity was assessed using ASPI test, ADP test and TRAP test and thrombus size decreased, whereas time to clot formation increased, compared to baseline (<i>p</i> ≤ .042 for all). Preoperative platelet reactivity in the TRAP test was lower in patients who experienced post-operative bleeding, defined as ≥3 red blood cell units transfusion, compared to those who did not (<i>p</i> = .038). Baseline hemoglobin level <13 g/dl and TRAP test result ≤29.5 AUC increased the odds of bleeding by 5.4-fold and 6.8-fold, respectively, independent of other clinical variables. We conclude that in patients with TAAA undergoing bEVAR, platelet reactivity and platelet-rich thrombus formation decreased directly after the operation. Preoperative hemoglobin level and platelet reactivity in the TRAP test were independent predictors of postoperative bleeding complications.</p>","PeriodicalId":20268,"journal":{"name":"Platelets","volume":"36 1","pages":"2458622"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143383222","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
From reticulated platelets to immature platelet fraction: structure, function, and clinical applications.
IF 2.5 3区 医学
Platelets Pub Date : 2025-12-01 Epub Date: 2025-03-04 DOI: 10.1080/09537104.2025.2467383
Yuxin Zhang, Ziyun Wang, Pan Zhou, Hongwei Zhang
{"title":"From reticulated platelets to immature platelet fraction: structure, function, and clinical applications.","authors":"Yuxin Zhang, Ziyun Wang, Pan Zhou, Hongwei Zhang","doi":"10.1080/09537104.2025.2467383","DOIUrl":"https://doi.org/10.1080/09537104.2025.2467383","url":null,"abstract":"<p><p>In comparison to mature platelets, reticulated platelets (RPs) are newly released from the bone marrow and exhibit a larger size, higher reactivity, and a greater quantity of RNA, and can be an agile indicator of platelet turnover. The transcriptome associated with platelet function is significantly upregulated in RPs, which is a possible explanation for RPs intrinsic hyper-reactivity. We presented a comprehensive overview of the detection techniques for RPs. Current methods to quantify RPs in clinical routine are flow cytometry and fully automated hematology analyzers (Sysmex-XE/XN, Abbott, ADVIA, Mindray), which make the detection of RPs simpler, faster and more affordable. The proportion of RPs increased in the circulation has potential diagnostic and prognostic values in multiple clinical settings (risk stratification in cardiovascular diseases, the effect on antiplatelet drugs, differential diagnosis of thrombocytopenia, monitor platelet recovery after bone marrow or stem cell transplantation, and other diseases). There have been several studies focusing on RPs in recent years, particularly in cardiovascular disease and thrombocytopenia. In this review we summarizes the current study with regard to RPs and discuss their likely contribution in clinical routine.</p>","PeriodicalId":20268,"journal":{"name":"Platelets","volume":"36 1","pages":"2467383"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143543018","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cardiometabolic risk factor burden associates with an immature platelet profile.
IF 2.5 3区 医学
Platelets Pub Date : 2025-12-01 Epub Date: 2025-01-30 DOI: 10.1080/09537104.2025.2459800
Carine E Hamo, Matthew Muller, Emily Rosenfeld, Yuhe Xia, Adedoyin Akinlonu, Elliot Luttrell-Williams, Tessa J Barrett, Jeffrey S Berger
{"title":"Cardiometabolic risk factor burden associates with an immature platelet profile.","authors":"Carine E Hamo, Matthew Muller, Emily Rosenfeld, Yuhe Xia, Adedoyin Akinlonu, Elliot Luttrell-Williams, Tessa J Barrett, Jeffrey S Berger","doi":"10.1080/09537104.2025.2459800","DOIUrl":"10.1080/09537104.2025.2459800","url":null,"abstract":"<p><p>Cardiometabolic risk factors, obesity, diabetes and hyperlipidemia contribute to cardiovascular disease (CVD). While platelets are involved in CVD pathogenesis, the relationship between risk factor burden on platelet indices and the platelet transcriptome remains uncertain. Blood was collected from CVD-free adults, measuring platelet count, mean platelet volume (MPV), immature platelet fraction (IPF), and absolute immature platelet fraction (AIPF) by hemogram. Platelets were isolated and analyzed via RNA sequencing. Participants were stratified by number of cardiometabolic risk factors (diabetes, obesity, hyperlipidemia). We calculated median (IQR) values of platelet indices and p-for-trend via linear regression across risk factor burden. To evaluate the association between risk factor burden and platelet transcripts, we performed multivariable linear regression adjusting for age, sex, and race/ethnicity. Among 141 participants, (50.5 ± 14.8 years, 42% male, 26% Black) risk factor burden was associated with increasing platelet size, IPF, and AIPF but not platelet count. Platelet RNA sequencing identified 100 differentially expressed transcripts (<i>p</i> < .01; 66 upregulated, 34 downregulated). Gene ontology enrichment analysis demonstrated upregulated pathways of secondary metabolic processes (NES = 1.96, <i>p</i> < .01), and hematopoietic stem cell proliferation (NES = 1.95, <i>p</i> < .01). Greater cardiometabolic risk factor burden is associated with increased platelet size and immaturity and suggesting novel platelet-mediated mechanisms linking risk factor burden with CVD.</p>","PeriodicalId":20268,"journal":{"name":"Platelets","volume":"36 1","pages":"2459800"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11801799/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143067532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Extracellular thiol isomerase ERp5 regulates integrin αIIbβ3 activation by inhibition of fibrinogen binding.
IF 2.5 3区 医学
Platelets Pub Date : 2025-12-01 Epub Date: 2025-01-30 DOI: 10.1080/09537104.2025.2455743
Kaifei Sun, Yaqiong Zhang, Aizhen Yang, Yuxin Zhang, Zhenzhen Zhao, Xiaofeng Yan, Yi Lu, Yue Han, Depei Wu, Freda Passam, Jingyu Zhang, Yi Wu
{"title":"Extracellular thiol isomerase ERp5 regulates integrin αIIbβ3 activation by inhibition of fibrinogen binding.","authors":"Kaifei Sun, Yaqiong Zhang, Aizhen Yang, Yuxin Zhang, Zhenzhen Zhao, Xiaofeng Yan, Yi Lu, Yue Han, Depei Wu, Freda Passam, Jingyu Zhang, Yi Wu","doi":"10.1080/09537104.2025.2455743","DOIUrl":"https://doi.org/10.1080/09537104.2025.2455743","url":null,"abstract":"<p><p>Recent studies have shown that anti-ERp5 antibodies inhibit platelet activation and thrombus formation; Moreover, ERp5-deficient platelets exhibit enhanced platelet reactivity via regulation of endoplasmic reticulum (ER) stress. In this study, we used a new ERp5-knockout mouse model as well as recombinant ERp5 (rERp5) protein, to examine the role of ERp5 in platelet function and thrombosis. Although platelet-specific ERp5-deficient mice had decreased platelet count, the mice had shortened tail-bleeding times and enhanced platelet accumulation in FeCl<sub>3</sub>-induced mesenteric artery injury, compared with wild-type mice. Using platelet-specific ERp5-deficient mice, we found that ERp5 deficiency increased platelet aggregation, granule secretion, and integrin αIIbβ3 activation. Wild-type recombinant ERp5 protein (rERp5-wt) and inactive mutant ERp5 protein (rERp5-mut) both inhibited human platelet aggregation and the binding of fibrinogen to human platelets, indicating that ERp5 protein interferes with the interaction between integrin αIIbβ3 and its ligand fibrinogen, and its enzymatic activity is not required for this process. Consistently, wild-type mice injected with rERp5-wt or rERp5-mut protein had prolonged tail-bleeding times. Our results provide important evidence that platelet ERp5 negatively regulates platelet activation and thrombus formation, via steric hindrance interfering with integrin αIIbβ3 ligation.</p>","PeriodicalId":20268,"journal":{"name":"Platelets","volume":"36 1","pages":"2455743"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143067537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Transcriptomic and functional characterization of megakaryocytic-derived platelet-like particles: impaired aggregation and prominent anti-tumor effects. 巨核细胞衍生的血小板样颗粒的转录组学和功能特征:聚集受损和显著的抗肿瘤作用。
IF 2.5 3区 医学
Platelets Pub Date : 2025-12-01 Epub Date: 2025-01-15 DOI: 10.1080/09537104.2024.2449344
Kaitlin Garofano, Vera Mariani, Kameron Rashid, Sumanun Suwunnakorn, Alfateh Sidahmed, Anelia Horvath, Sanjay B Maggirwar, Travis J O'Brien, Minoli A Perera, Michael Whalen, Norman H Lee
{"title":"Transcriptomic and functional characterization of megakaryocytic-derived platelet-like particles: impaired aggregation and prominent anti-tumor effects.","authors":"Kaitlin Garofano, Vera Mariani, Kameron Rashid, Sumanun Suwunnakorn, Alfateh Sidahmed, Anelia Horvath, Sanjay B Maggirwar, Travis J O'Brien, Minoli A Perera, Michael Whalen, Norman H Lee","doi":"10.1080/09537104.2024.2449344","DOIUrl":"10.1080/09537104.2024.2449344","url":null,"abstract":"<p><p>Platelet-like particles (PLPs), derived from megakaryocytic cell lines MEG-01 and K-562, are widely used as a surrogate to study platelet formation and function. We demonstrate by RNA-Seq that PLPs are transcriptionally distinct from platelets. Expression of key genes in signaling pathways promoting platelet activation/aggregation, such as the PI3K/AKT, protein kinase A, phospholipase C, and α-adrenergic and GP6 receptor pathways, was missing or under-expressed in PLPs. Functionally, PLPs do not aggregate following epinephrine, collagen, or ADP stimulation. While PLPs aggregated in response to thrombin, they did not display enhanced expression of surface markers P-selectin and activated α<sub>2b</sub>β<sub>3</sub>, in contrast to platelets. We have previously demonstrated that platelets physically couple to MDA-PCa-2b and RC77T/E prostate cancer (PCa) cells via specific ligand-receptor interactions, leading to platelet-stimulated cell invasiveness and apoptotic resistance, and reciprocal cell-induced platelet aggregation. In contrast, PLP interactions with PCa cells inhibited both cell invasion and apoptotic resistance while failing to promote PLP aggregation. Moreover, PLPs reduced platelet-PCa cell interactions and antagonized platelet-stimulated oncogenic effects in PCa cells. RNA-Seq analysis identified candidate ligand-transmembrane protein combinations involved in anti-tumorigenic signaling of PLPs to PCa cells. Antibody neutralization of the TIMP3-MMP15 and VEGFB-FGFR1 signaling axes reversed PLP-mediated anti-invasion and apoptotic sensitization, respectively. In summary, PLPs lack many transcriptomic, molecular and functional features of platelets and possess novel anti-tumorigenic properties. These findings indicate that PLPs may have a potential therapeutic role in targeting and disrupting the oncogenic signaling between platelets and cancer cells, offering a new avenue for anti-cancer strategies.</p>","PeriodicalId":20268,"journal":{"name":"Platelets","volume":"36 1","pages":"2449344"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142984432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Regulation of lipid metabolism: a new strategy for platelet storage.
IF 2.5 3区 医学
Platelets Pub Date : 2025-12-01 Epub Date: 2025-02-14 DOI: 10.1080/09537104.2025.2465321
Jieyun Shi, Wenting Wang, Jinmei Xu, Wen Yin
{"title":"Regulation of lipid metabolism: a new strategy for platelet storage.","authors":"Jieyun Shi, Wenting Wang, Jinmei Xu, Wen Yin","doi":"10.1080/09537104.2025.2465321","DOIUrl":"https://doi.org/10.1080/09537104.2025.2465321","url":null,"abstract":"<p><p>Transfusions of platelets are often used as prophylaxis in patients with hematologic malignancies and as treatment for active bleeding. However, platelets are in short supply due to the fact that they could only be kept for 5-7 days in vitro and they lose some of their functionality as a result of platelet storage lesions. To address this issue, refrigeration, cryopreservation and platelet additive solutions have been researched to determine their abilities to extend platelet storage duration. However, refrigerated platelets are quickly cleared after transfusion, while platelets in platelet additive solutions still present issues such as platelets quality and the risk of allergic reactions. Recent studies showed that changes in lipid metabolites during platelet storage and inadequate of fatty acid metabolism may also limit platelet shelf life and function. In this review, we address the principles of lipid metabolism during platelet storage and discuss the strategies for effective platelet storage systems. The findings of this review highlight the role of lipid metabolism during platelet storage, providing insights into future research focused on extending the preservation period and function of platelet.</p>","PeriodicalId":20268,"journal":{"name":"Platelets","volume":"36 1","pages":"2465321"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143414952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of aspirin dosage on oxidative stress and platelet reactivity in patients undergoing coronary artery bypass grafting (APRICOT): randomized controlled trial.
IF 2.5 3区 医学
Platelets Pub Date : 2025-12-01 Epub Date: 2025-02-05 DOI: 10.1080/09537104.2025.2457415
Aleksandra Gąsecka, Rafał Kaczorowski, Katarzyna Pomykała, Tomasz Kucharski, Magdalena Gajewska, Dominika Siwik, Katarzyna Karoń, Maciej Małyszko, Jaromir Hunia, Jakub Michal Zimodro, Paweł Kowalczyk, Oliwia Zagrocka-Stendel, Małgorzata Dutkiewicz, Katarzyna Koziak, Ceren Eyileten, Marek Postuła, Mateusz Wondołkowski, Marcin Grabowski, Mariusz Kuśmierczyk, Radosław Wilimski
{"title":"Effect of aspirin dosage on oxidative stress and platelet reactivity in patients undergoing coronary artery bypass grafting (APRICOT): randomized controlled trial.","authors":"Aleksandra Gąsecka, Rafał Kaczorowski, Katarzyna Pomykała, Tomasz Kucharski, Magdalena Gajewska, Dominika Siwik, Katarzyna Karoń, Maciej Małyszko, Jaromir Hunia, Jakub Michal Zimodro, Paweł Kowalczyk, Oliwia Zagrocka-Stendel, Małgorzata Dutkiewicz, Katarzyna Koziak, Ceren Eyileten, Marek Postuła, Mateusz Wondołkowski, Marcin Grabowski, Mariusz Kuśmierczyk, Radosław Wilimski","doi":"10.1080/09537104.2025.2457415","DOIUrl":"https://doi.org/10.1080/09537104.2025.2457415","url":null,"abstract":"<p><p>Coronary artery bypass grafting (CABG) triggers oxidative stress and platelet activation. High acetylsalicylic acid (ASA) dose might mitigate the transient proinflammatory state. We compared the effect of three ASA dosages on post-CABG platelet reactivity, oxidative stress, and serum CD39 and CD73 levels. Thirty-six consecutive patients undergoing elective off-pump CABG, pre-treated with ASA 1 × 75 mg for ≥7 days, were randomized to continue the prior treatment regimen, switch to ASA 1 × 150 mg, or ASA 2 × 75 mg. Blood was collected on admission, 7 days, 1 month, and 3 months after CABG. Platelet reactivity was assessed using impedance aggregometry. Platelet oxidative stress was measured as platelet mitochondria extracellular oxygen consumption rate and oxidatively damaged whole-blood DNA cleavage. Serum CD39 and CD73 levels were determined using ELISA. Platelet reactivity and oxidative stress parameters were comparable in all groups. Patients treated with ASA 2 × 75 mg had higher CD39 levels at 7 days and 1 month (<i>p</i> = .049, <i>p</i> = .033), compared to the control group. ASA 2 × 75 mg was associated a beneficial effect on serum CD39 levels after off-pump CABG, without a significant effect on oxidative stress parameters.</p>","PeriodicalId":20268,"journal":{"name":"Platelets","volume":"36 1","pages":"2457415"},"PeriodicalIF":2.5,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143190154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Increased circulating platelet-derived extracellular vesicles in severe COVID-19 disease. 严重 COVID-19 疾病中循环血小板衍生细胞外囊泡增加。
IF 3.3 3区 医学
Platelets Pub Date : 2024-12-01 Epub Date: 2024-02-21 DOI: 10.1080/09537104.2024.2313362
Tuukka Helin, Mari Palviainen, Marja Lemponen, Katariina Maaninka, Pia Siljander, Lotta Joutsi-Korhonen
{"title":"Increased circulating platelet-derived extracellular vesicles in severe COVID-19 disease.","authors":"Tuukka Helin, Mari Palviainen, Marja Lemponen, Katariina Maaninka, Pia Siljander, Lotta Joutsi-Korhonen","doi":"10.1080/09537104.2024.2313362","DOIUrl":"10.1080/09537104.2024.2313362","url":null,"abstract":"<p><p>Coagulation disturbances are major contributors to COVID-19 pathogenicity, but limited data exist on the involvement of extracellular vesicles (EVs) and residual cells (RCs). Fifty hospitalized COVID-19 patients stratified by their D-dimer levels into high (>1.5 mg/L, <i>n</i> = 15) or low (≤1.5 mg/l, <i>n</i> = 35) and 10 healthy controls were assessed for medium-sized EVs (mEVs; 200-1000 nm) and large EVs/RCs (1000-4000 nm) by high sensitivity flow cytometry. EVs were analyzed for CD61, CD235a, CD45, and CD31, commonly used to detect platelets, red blood cells, leukocytes or endothelial cells, respectively, whilst phosphatidyl serine EVs/RCs were detected by lactadherin-binding implicating procoagulant catalytic surface. Small EV detection (sEVs; 50-200 nm) and CD41a (platelet integrin) colocalization with general EV markers CD9, CD63, and CD81 were performed by single particle interferometric reflectance imaging sensor. Patients with increased D-dimer exhibited the highest number of RCs and sEVs irrespective of cell origin (<i>p</i> < .05). Platelet activation, reflected by increased CD61+ and lactadherin+ mEV and RC levels, associated with coagulation disturbances. Patients with low D-dimer could be discriminated from controls by tetraspanin signatures of the CD41a+ sEVs, suggesting the changes in the circulating platelet sEV subpopulations may offer added prognostic value during COVID progression.</p>","PeriodicalId":20268,"journal":{"name":"Platelets","volume":"35 1","pages":"2313362"},"PeriodicalIF":3.3,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139913275","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Light transmission aggregometry for platelet function testing: position paper on current recommendations and French proposals for accreditation. 用于血小板功能检测的透光聚集测定法:关于当前建议和法国认证提案的立场文件。
IF 2.5 3区 医学
Platelets Pub Date : 2024-12-01 Epub Date: 2024-11-18 DOI: 10.1080/09537104.2024.2427745
Alain Stépanian, Florence Fischer, Claire Flaujac, Valérie Eschwège, Céline Delassasseigne, Léna Leflem, Frédéric Loridon, Sophie Voisin, Dominique Lasne
{"title":"Light transmission aggregometry for platelet function testing: position paper on current recommendations and French proposals for accreditation.","authors":"Alain Stépanian, Florence Fischer, Claire Flaujac, Valérie Eschwège, Céline Delassasseigne, Léna Leflem, Frédéric Loridon, Sophie Voisin, Dominique Lasne","doi":"10.1080/09537104.2024.2427745","DOIUrl":"10.1080/09537104.2024.2427745","url":null,"abstract":"<p><p>Light transmission aggregometry (LTA) is a method used to investigate platelet functions in platelet-rich plasma (PRP), notably when screening for platelet disorders. Various national guidelines and recommendations help in setting up the LTA test in specialized laboratories. However, due to the nature of the sample matrix and its subsequent specificities, more accurate positions are needed to achieve LTA accreditation according to the standard NF EN ISO 15 189. We reviewed guidelines and recommendations as they can be useful in the accreditation process, and we conducted a survey on LTA practice among members of the <i>Société Française de Thrombose et d'Hémostase (SFTH</i>) in 2021. We formulated 28 proposals, which have been approved by vote within the SFTH. All aspects to take into consideration for the proper conduct of LTA assays and their accreditation have been covered. Notably, preanalytical, analytical and postanalytical aspects are depicted, including blood sampling, PRP preparation, instruments, agonists, performance assessment, personnel training and data interpretation. This document, essentially representing a French position paper on the current recommendations and subsequent proposals for LTA accreditation, might prove useful also outside France for relevant laboratories and auditors involved in LTA accreditation.</p>","PeriodicalId":20268,"journal":{"name":"Platelets","volume":"35 1","pages":"2427745"},"PeriodicalIF":2.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142648580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Appraising non-linear association between pre-diagnostic platelet counts and cancer survival outcomes: observational and genetic analysis. 评估诊断前血小板计数与癌症生存结果之间的非线性关联:观察和遗传分析。
IF 2.5 3区 医学
Platelets Pub Date : 2024-12-01 Epub Date: 2024-07-29 DOI: 10.1080/09537104.2024.2379815
Changtao Li, Junhua Chen, Deqian Han, Chi Shu, Jun Huang, Linru Wei, Haoran Luo, Qingbin Wu, Xin Chen, Yazhou He, Yanhong Zhou
{"title":"Appraising non-linear association between pre-diagnostic platelet counts and cancer survival outcomes: observational and genetic analysis.","authors":"Changtao Li, Junhua Chen, Deqian Han, Chi Shu, Jun Huang, Linru Wei, Haoran Luo, Qingbin Wu, Xin Chen, Yazhou He, Yanhong Zhou","doi":"10.1080/09537104.2024.2379815","DOIUrl":"https://doi.org/10.1080/09537104.2024.2379815","url":null,"abstract":"<p><p>Previous studies have reported inconsistent associations between platelet count (PLT) and cancer survival. However, whether there is linear causal effect merits in-depth investigations. We conducted a cohort study using the UK Biobank and a two-sample Mendelian randomization (MR) analysis. PLT levels were measured prior to cancer diagnosis. We adopted overall survival (OS) as the primary outcome. Cox models were utilized to estimate the effects of PLTs on survival outcomes at multiple lag times for cancer diagnosis. We employed 34 genetic variants as PLT proxies for MR analysis. Linear and non-linear effects were modeled. Prognostic effects of gene expression harboring the instrumental variants were also investigated. A total of 65 471 cancer patients were included. We identified a significant association between elevated PLTs (per 100 × 10<sup>9</sup>/L) and inferior OS (HR: 1.07; 95% CI: 1.04-1.10; <i>p</i> < .001). Similar significant associations were observed for several cancer types. We further observed a U-shaped relationship between PLTs and cancer survival (<i>p</i> < .001). Our MR analysis found null evidence to support a causal association between PLTs and overall cancer survival (HR: 1.000; 95% CI: 0.998-1.001; <i>p</i> = .678), although non-linear MR analysis unveiled a potential greater detrimental effect at lower PLT range. Expression of eleven PLT-related genes were associated with cancer survival. Early detection of escalated PLTs indicated possible occult cancer development and inferior subsequent survival outcomes. The observed associations could potentially be non-linear. However, PLT is less likely to be a promising therapeutic target.</p>","PeriodicalId":20268,"journal":{"name":"Platelets","volume":"35 1","pages":"2379815"},"PeriodicalIF":2.5,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141788892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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