α-Actinin-1 deficiency in megakaryocytes causes low platelet count, platelet dysfunction, and mitochondrial impairment.

Cytoskeletal remodeling and mitochondrial bioenergetics play important roles in thrombocytopoiesis and platelet function. Recently, α-actinin-1 mutations have been reported in patients with congenital macrothrombocytopenia. However, the role and underlying mechanism of α-actinin-1 in thrombocytopoiesis and platelet function remain elusive.

INTERNATIONAL NORMALIZED RATIO AND ACTIVATED PARTIAL THROMBOPLASTIN TIME DO NOT PREDICT PLASMA TRANSFUSION IN LIVER TRANSPLANTATION.

Background: Blood loss during liver transplantation (LT) remains a major concern associated with increased morbidity and reduced patient and graft survival. The high complexity of the procedure associated with the multifaceted origin of the bleeding urges early identification of high-risk patients and proper monitoring of hemostasis disorders in order to improve results. The accuracy of international normalized ratio (INR) and activated partial thromboplastin time (aPTT) to evaluate coagulation status in cirrhotic patients has been doubted.

Development of a recombinant Ang1 variant with enhanced Tie2 binding and its application to attenuate sepsis in mice.

The angiopoietin (Ang)-Tie axis, critical for endothelial cell function and vascular development, is a promising therapeutic target for treating vascular disorders and inflammatory conditions like sepsis. This study aimed to enhance the binding affinity of recombinant Ang1 variants to the Tie2 and explore their therapeutic potential. Structural insights from the Ang1-Tie2 complex enabled the identification of key residues within the Ang1 receptor binding domain (RBD) critical for Tie2 interaction.

N-terminomics profiling of host proteins targeted by excretory-secretory proteases of the nematode Angiostrongylus vasorum identifies points of interaction with canine coagulation and complement cascade.

The cardiopulmonary nematode Angiostrongylus vasorum can cause severe disease in dogs, including coagulopathies manifesting with bleeding. We analysed A. vasorum excretory/secretory protein (ESP)-treated dog plasma and serum by N-terminome analysis using Terminal Amine Isotopic Labelling of Substrates (TAILS) to identify cleaved host substrates.

Bipolar vs. monopolar sealer in decreasing blood loss and transfusion rate in patients undergoing two-stage exchange in infected total knee arthroplasty: propensity score-matched study.

Background: Two-stage revision in infected total knee arthroplasty increases the risk of blood loss and the need for transfusion. The present study aimed to test the hemostatic efficacy of a bipolar sealer to reduce blood loss and transfusion requirements after the first stage in patients affected by peri-prosthetic knee infections.

Methods: Twenty-four patients undergoing 2-stage arthroplasty for infected TKA using a bipolar sealer (Haemodiss, Kylix, Naples, IT) were compared with 24 patients of a historical control group in which conventional electrocautery was used.

Transcriptomic and functional characterization of megakaryocytic-derived platelet-like particles: impaired aggregation and prominent anti-tumor effects.

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.

Unlocking Platelet Mechanisms through Multi-Omics Integration: A Brief Review.

Platelets, tiny cell fragments measuring 2-4 μm in diameter without a nucleus, play a crucial role in blood clotting and maintaining vascular integrity. Abnormalities in platelets, whether genetic or acquired, are linked to bleeding disorders, increased risk of blood clots, and cardiovascular diseases. Advanced proteomic techniques offer profound insights into the roles of platelets in hemostasis and their involvement in processes such as inflammation, metastasis, and thrombosis.

Cost-effectiveness of follow-up algorithms for chronic thromboembolic pulmonary hypertension in pulmonary embolism survivors.

Introduction: Achieving an early diagnosis of chronic thromboembolic pulmonary hypertension (CTEPH) in pulmonary embolism (PE) survivors results in better quality of life and survival. Importantly, dedicated follow-up strategies to achieve an earlier CTEPH diagnosis involve costs that were not explicitly incorporated in the models assessing their cost-effectiveness. We performed an economic evaluation of 11 distinct PE follow-up algorithms to determine which should be preferred.

A self-hygroscopic, rapidly self-gelling polysaccharide-based sponge with robust wet adhesion for non-compressible hemorrhage control and infected wounds healing.

Uncontrollable non-compressible hemorrhage and traumatic infection have been major causes of mortality and disability in both civilian and military populations. A dressing designed for point-of-care control of non-compressible hemorrhage and prevention of traumatic infections represents an urgent medical need. Here, a novel self-gelling sponge OHN@ε-pL is developed, integrating N-succinimidyl ester oxidized hyaluronic acid (OHN) and ε-poly-L-lysine (ε-pL).

Placental Adhesion Subsequent to Uterine Preservation via Resuscitative Endovascular Balloon Occlusion of the Aorta: A Case Report.

An adherent placenta is a life-threatening condition that impairs the mother's life owing to hemorrhagic shock and disseminated intravascular coagulation. Profound hemorrhage resulting from placental abruption is often managed using hysterectomy to preserve the mother's life, although the consequent loss of fertility can be devastating, particularly in younger women. Thus, strategies that facilitate fertility preservation while effectively controlling hemorrhage should be considered viable alternatives.

Validation of the 5-SNP score for the prediction of venous thromboembolism in a Danish fast-track cohort of 6789 total hip and total knee arthroplasty patients.

Background: Venous thromboembolism (VTE) is a serious complication following total hip arthroplasty (THA) and total knee arthroplasty (TKA). Despite improvements with fast-track treatment protocols, 0.5% of patients still develop a VTE within 90-days postoperatively.

Should a history of venous thromboembolism be considered a contraindication for scuba diving?

The question of whether scuba diving is safe for patients with a history of venous thromboembolism (VTE) remains unanswered. Cases of VTE have been reported after decompression accidents but not following properly conducted dives. However, the risk of VTE and bleeding on anticoagulant therapy during diving has yet to be defined.

A Systematic Review of Safety and Efficacy of Factor XI/XIa Inhibitors in Patients With ESKD on Hemodialysis.

Introduction: Factor XI/XIa (FXI/XIa) has emerged as a potential target for antithrombotic therapy, driven by preclinical evidence showing the role of FXI/XIa inhibition for preventing thrombosis without impeding hemostasis. This is particularly promising for patients at high risk of both thromboembolic events and bleeding, such as patients with end-stage kidney disease (ESKD) on hemodialysis (HD).

Methods: We systematically searched Embase, MEDLINE, and ClinicalTrials.

Endothelial Damage in JAK2V617F Myeloproliferative Neoplasms with Splanchnic Vein Thrombosis.

Background:  V617F-mutated myeloproliferative neoplasms (MPN) exhibit abnormal proliferation of bone marrow progenitors and increased risk of thrombosis, specifically in splanchnic veins (SVT). The contribution of the endothelium to the development of the prothrombotic phenotype was explored.

Material And Methods:  Plasma and serum samples from V617F MPN patients with (n=26) or without (n=7) thrombotic debut and different treatments, were obtained (n=33).

Brodifacoum causes coagulopathy, hemorrhages, and mortality in rainbow trout (Oncorhynchus mykiss) at environmentally relevant hepatic residue concentrations.

Widely used second-generation anticoagulant rodenticides like brodifacoum are classified as persistent, bioaccumulative, and toxic. Widespread exposure of terrestrial and avian non-target species is well-known and recently hepatic anticoagulant rodenticide residues have been detected in wild fish. However, no sufficient data exist to interpret the effects of these findings on fish health.

Bioinspired Adhesive Hydrogel Platform with Photothermal Antimicrobial, Antioxidant, and Angiogenic Properties for Whole-Process Management of Diabetic Wounds.

Diabetic wound healing remains a major challenge in modern medicine. The persistent inflammation and immune dysfunction hinder angiogenesis by producing excessive ROS and increasing the susceptibility to bacterial infection. In this study, we developed an integrated strategy for whole-process management of diabetic wounds based on a bioinspired adhesive hydrogel platform with hemostasis, photothermal antimicrobial, antioxidant, anti-inflammatory, and angiogenic properties.

Novel gel-immersion endoscopic injection sclerotherapy method for prophylactic hemostasis of esophageal varices: A pilot feasibility and safety study (with video).

Endoscopic injection sclerotherapy (EIS) is a useful prophylactic hemostatic procedure for esophageal varices. However, injecting sclerosing agents into blood vessels is technically challenging and often ineffective. Gel-immersion EIS (GI-EIS) may facilitate easier intravascular sclerosing agent injection by dilating the varices and enhancing scope stability by maintaining low intra-gastrointestinal pressure.

Pulmonary hydatid cyst misdiagnosed as lung cancer.

Hydatid disease is endemic in Tunisia. Whereas uncomplicated pulmonary hydatid cysts are easily diagnosed on radiological findings, complicated and atypical forms may be misdiagnosed and confused with other pulmonary lesions, mainly lung malignancies. We report a case of a 47-year-old woman, who presented with a 3-month history of hemoptysis.

Integrating biomarkers for hemostatic disorders into computational models of blood clot formation: A systematic review.

In the pursuit of personalized medicine, there is a growing demand for computational models with parameters that are easily obtainable to accelerate the development of potential solutions. Blood tests, owing to their affordability, accessibility, and routine use in healthcare, offer valuable biomarkers for assessing hemostatic balance in thrombotic and bleeding disorders. Incorporating these biomarkers into computational models of blood coagulation is crucial for creating patient-specific models, which allow for the analysis of the influence of these biomarkers on clot formation.

Freeze-dried plasma: Hemostasis and biophysical analyses for damage control resuscitation.

Background: Effective hemorrhage protocols prioritize immediate hemostatic resuscitation to manage hemorrhagic shock. Prehospital resuscitation using blood products, such as whole blood or alternatively dried plasma in its absence, has the potential to improve outcomes in hemorrhagic shock patients. However, integrating blood products into prehospital care poses substantial logistical challenges due to issues with storage, transport, and administration in field environments.

[Anticoagulation effects of nafamostat mesylate in sustained low-efficiency dialysis and its relevant factors].

To investigate anticoagulation effects of nafamostat mesylate(NM) in sustained low-efficiency dialysis (SLED) and its relevant factors. Critically ill patients with kidney disease who were admitted to Zhongshan Hospital Affiliated to Fudan University and underwent SLED treatment from May to August 2024 were retrospectively included. Baseline clinical data were collected, and the activated partial thromboplastin time (APTT) and activated clotting time (ACT) were measured at the arterial end, before the filter, and at the venous end two hours post-NM anticoagulation treatment.

Assays of Platelet SNARE-actin Interactions.

The actin cytoskeleton serves an important, but poorly characterized, role in controlling granule exocytosis. The dynamic nature of actin remodeling allows it to act both as a barrier to prevent indiscriminate granule release and as a facilitator of membrane fusion. In its capacity to promote exocytosis, filamentous actin binds to components of the exocytotic machinery through actin binding proteins, but also through direct interactions with SNAREs.

CPSF6-RARγ interacts with histone deacetylase 3 to promote myeloid transformation in RARG-fusion acute myeloid leukemia.

Acute myeloid leukemia (AML) with retinoic acid receptor gamma (RARG) fusions, which exhibits clinical features resembling acute promyelocytic leukemia (APL), has been identified as a new subtype with poor clinical outcomes. The underlying mechanism of RARG-fusion leukemia remains poorly understood, and needs to be explored urgently to instruct developing effective therapeutic strategies. Here, using the most prevalent RARG fusion, CPSF6-RARG (CR), as a representative, we reveal that the CR fusion, enhances the expansion of myeloid progenitors, impairs their maturation and synergizes with RAS mutations to drive more aggressive myeloid malignancies.

Neutrophil adhesion to vessel walls impairs pulmonary circulation in COVID-19 pathology.

Microthrombus formation is associated with COVID-19 severity; however, the detailed mechanism remains unclear. In this study, we investigated mouse models with severe pneumonia caused by SARS-CoV-2 infection by using our in vivo two-photon imaging system. In the lungs of SARS-CoV-2-infected mice, increased expression of adhesion molecules in intravascular neutrophils prolonged adhesion time to the vessel wall, resulting in platelet aggregation and impaired lung perfusion.

The impact of clinical phenotypes of coronary artery disease on outcomes in patients with atrial fibrillation: A post-hoc analysis of GLORIA-AF registry.

Background: Coronary artery disease (CAD) and atrial fibrillation (AF) often coexist, but the impact of clinical phenotypes of CAD on outcomes in AF patients in the non-vitamin K antagonist oral anticoagulant drugs (NOACs) era is less well understood.

Methods: This was a post-hoc of the GLORIA-AF registry, a global, multicenter, prospective AF registry study. Patients were divided into three groups: prior history of myocardial infarction (MI)/unstable angina group (Group 1); stable angina group (Group 2); and a control group without stable angina or history of MI/unstable angina.