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Neutrophil-activating peptide 2 (NAP-2, CXCL7), a platelet-derived neutrophil chemoattractant, is involved in inflammation. We investigated associations between NAP-2 levels, neutrophil extracellular traps (NETs) formation, and fibrin clot properties in atrial fibrillation (AF). We recruited 237 consecutive patients with AF (mean age, 68 ± 11 years; median CHADSVASc score of 3 [2-4]) and 30 apparently healthy controls. Plasma NAP-2 concentrations were measured, along with plasma fibrin clot permeability (K) and clot lysis time (CLT), thrombin generation, citrullinated histone H3 (citH3), as a marker of NETs formation, and 3-nitrotyrosine reflecting oxidative stress. NAP-2 levels were 89% higher in AF patients than in controls (626 [448-796] vs. 331 [226-430] ng/ml; p < 0.0001). NAP-2 levels were not associated with demographics, CHADS-VASc score, or the AF manifestation. Patients with NAP-2 in the top quartile (> 796 ng/ml) were characterized by higher neutrophil count (+ 31.7%), fibrinogen (+ 20.8%), citH3 (+ 86%), and 3-nitrotyrosine (+ 111%) levels, along with 20.2% reduced K and 8.4% prolonged CLT as compared to the remaining subjects (all p < 0.05). NAP-2 levels were positively associated with fibrinogen in AF patients (r = 0.41, p = 0.0006) and controls (r = 0.65, p < 0.01), along with citH3 (r = 0.36, p < 0.0001) and 3-nitrotyrosine (r = 0.51, p < 0.0001) in the former group. After adjustment for fibrinogen, higher citH3 (per 1 ng/ml β = -0.046, 95% CI -0.029; -0.064) and NAP-2 (per 100 ng/ml β = -0.21, 95% CI -0.14; -0.28) levels were independently associated with reduced K. Elevated NAP-2, associated with increased oxidative stress, has been identified as a novel modulator of prothrombotic plasma fibrin clot properties in patients with AF.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10250863 | PMC |
http://dx.doi.org/10.1007/s12975-023-01165-1 | DOI Listing |
Neurologia (Engl Ed)
December 2024
Servicio de Neurología, Hospital Universitario Navarra, Pamplona, Navarra, Spain; RICORS-ICTUS, ISCIII, Madrid, Spain.
Introduction: Since mechanical thrombectomy has allowed ischemic stroke thrombi retrieval, its exhaustive study has involved a better knowledge of physiopathological processes implied in its formation.
Development: Thrombotic pathways involved in the different vascular beds shared common mechanisms conditioning difficulties in the identification of specific patterns associated with stroke etiology. Other factors as clot formation time, associated inflammatory status or activation of additional immune and coagulation pathways [Neutrophil extracellular traps (NETs) delivery, platelet aggregation, endothelial activation and VonWillebrand Factor release] have been described as determinants in thrombus characteristics.
Wiad Lek
December 2024
PROVINCIAL HOSPITAL NAMED AFTER SAINT LUKE, TARNOW, POLAND.
Injectable platelet-rich fibrin (i-PRF) is a novel platelet concentrate that has been employed in dentistry with the objective of promoting tissue regeneration and healing. In contrast to platelet-rich plasma (PRP), i-PRF is more straightforward to handle, more cost-effective, and free from anticoagulants, which reduces biochemical alterations. The i-PRF procedure was developed in 2014 by adjusting the centrifugation forces.
View Article and Find Full Text PDFPleura Peritoneum
December 2024
Faculty of Health, Aarhus University, Aarhus, Denmark.
Objectives: Cancer cells can activate coagulation and inhibit fibrinolysis. The aim was to investigate the association between the burden of peritoneal metastases from colorectal cancer (PM-CRC) and biomarkers reflecting thrombin generation and fibrinolysis.
Methods: A cohort of 55 patients with PM-CRC scheduled for cytoreductive surgery.
Arthrosc Tech
November 2024
Department of Orthopaedic Surgery, Osaka Metropolitan University Graduate School of Medicine, Osaka, Japan.
An incomplete discoid lateral meniscus is often associated with radial tears, which cause meniscal extrusion and result in poor healing outcomes. Centralization has recently been used as a surgical method to reduce extrusion. However, various repair techniques use single point of fixation sutures exclusively on the femoral side, potentially hindering healing.
View Article and Find Full Text PDFLasers Surg Med
December 2024
James C Wyant College of Optical Sciences, University of Arizona, Tucson, Arizona, USA.
Objectives: To study the healing response of rat Achilles tendon when lacerated or treated with intense therapeutic ultrasound (ITU) via utilization of multiphoton microscopy (MPM) imaging and histology.
Materials And Methods: The right Achilles tendon of each Sprague Dawley rat within a cohort was partially lacerated. 1 to 2 days post-surgery, each rat received ITU treatment of the Achilles tendon on either the right or left leg.
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