Publications by authors named "Agata Hanna Bryk"

Background: Patients with type 2 diabetes mellitus (T2DM) are at high risk of cardiovascular mortality, but the mechanisms behind this remain unclear. Prothrombotic fibrin clot properties have been shown in T2DM and cardiovascular disease. We hypothesized that formation of denser clots, which are resistant to fibrinolysis, has a negative impact on cardiovascular mortality in T2DM.

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Acetylsalicylic acid (ASA) and type 2 diabetes mellitus (T2DM) affect fibrin clot properties through fibrinogen acetylation or glycation. We aimed to identify glycation and acetylation sites on fibrinogen in plasma fibrin clot of T2DM patients with respect to effects of ASA and fibrin clot properties. In fibrin clots generated from plasma of 9 T2DM patients, we performed mass-spectrometric analysis of Nε-fructosyl-(FL), Nε-carboxyethyl-(CEL) and Nε-carboxymethyl-lysine (CML), and acetylation sites, before and after one-month administration of 75 mg/d ASA confirmed with determination of thromboxane B2 concentration (TXB), along with clot permeability and lysis time, and thrombin generation.

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It has been reported that 476 proteins can be detected in plasma fibrin clots from patients with venous thromboembolism. Plasma fibrin clots proteomic composition in relation to their properties has not been studied in acute pulmonary embolism (PE). Clots generated from plasma of 20 PE patients and 20 healthy controls were assessed using mass spectrometry, clot permeability (K), and clot lysis time (CLT).

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Background: Type 2 diabetes mellitus (T2DM) is associated with hypofibrinolysis and increased factor XIII-mediated α2-antiplasmin incorporation into the fibrin clot. It is unclear whether there are sex-related differences in α2-antiplasmin incorporation in relation to impaired clot lysis in T2DM.

Aim: We investigated α2-antiplasmin incorporation into fibrin clots as a determinant of clot lysability in patients of both sexes with T2DM.

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Background: The post-translational protein modification via lysine residues can significantly alter its function. α2-antiplasmin, a key inhibitor of fibrinolysis, contains 19 lysine residues.

Aim: We sought to identify sites of glycation and acetylation in human α2-antiplasmin and test whether the competition might occur on the lysine residues of α2-antiplasmin.

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Introduction: Single nucleotide polymorphisms (SNP) in genes encoding proteins involved in metabolism and action of vitamin K antagonists (VKA) affect anticoagulation stability. We investigated how those polymorphisms influence bleeding rates in patients following venous thromboembolism (VTE).

Materials And Methods: In 324 patients following unprovoked VTE, 143 (44%) on warfarin and 181 (56%) on acenocoumarol, we recorded bleeds within the preceding 24 months.

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Type 2 diabetes is associated with faster formation of poorly lysable, denser fibrin clots and elevated cellular fibronectin (cFn), a marker of vascular injury. We investigated whether cFn affects clot properties in type 2 diabetes. In 200 consecutive patients with type 2 diabetes and 100 control subjects matched for age and sex, we determined plasma cFn along with clot formation and degradation using turbidimetric and permeability assays.

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Background: The SAMe-TT2R2 (sex female, age, medical history, treatment, tobacco use, race) score was developed in patients with atrial fibrillation (AF) on warfarin. The present study aimed to 1) compare the anticoagulation quality and management of AF patients treated with warfarin with those on acenocoumarol and 2) optimize the SAMe-TT2R2 score to detect AF patients at high risk of unstable anticoagulation with acenocoumarol and warfarin.

Methods: In a single-center retrospective study, 320 patients with AF, including 15 (5%) after valve replacement, aged 40-82 (median 70) years, including 203 (63%) receiving acenocoumarol and 117 (37%) treated with warfarin, were studied.

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Anticoagulants increase the risk of heavy menstrual bleeding (HMB). We sought to investigate the incidence, predictors and management of HMB in women on rivaroxaban compared to those on vitamin K antagonists (VKA). We addressed the issue as to whether HMB is associated with VTE recurrences.

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Background: Diffuse large B-cell lymphoma is the most common subtype of non-Hodgkin's lymphoma. Standard first-line treatment for this aggressive subtype comprises the anti-CD20 antibody rituximab combined with cyclophosphamide, doxorubicin, vincristine, and prednisone. If patients receiving such treatment have an early relapse, or their disease is initially refractory to such treatment, standard salvage regimens may not be effective.

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