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| http://dx.doi.org/10.1016/j.jacc.2019.06.022 | DOI Listing |
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Coagulation in familial hypercholesterolemic patients: effect of current hypolipidemic treatment and anticoagulants.
Naunyn Schmiedebergs Arch Pharmacol
January 2025
Department of Pharmacology and Toxicology, Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, Czech Republic.
Familial hypercholesterolemia (FH) is a relatively rare genetic disease associated with high serum cholesterol levels but also with abnormalities in blood coagulation. Novel pharmacotherapeutic approaches in FH including proprotein convertase subtilisin/kexin type 9 antibodies (PCSK9Ab) are very efficient in decreasing cholesterol levels but their impact on coagulation in FH is not yet established. Therefore, we hypothesized that these novel antidyslipidemic drugs can positively impact blood coagulation due to their more potent effect on cholesterol.
View Article and Find Full Text PDFProlonged prothrombin time in hyperemesis gravidarum as an indicator of vitamin K deficiency.
J Obstet Gynaecol Res
January 2025
Department of Obstetrics and Gynecology, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan.
Aim: Maternal vitamin K (VK) deficiency can lead to fetal complications such as cerebral hemorrhage and bone malformations. In this study, we aimed to analyze changes in prothrombin time (PT) and protein induced by VK absence or antagonist II (PIVKA-II) in patients with severe hyperemesis gravidarum with suspected VK deficiency.
Methods: We compared 151 patients with severe hyperemesis gravidarum treated with intravenous nutrition to 46 patients undergoing cervical suturing or benign ovarian tumor surgery before mid-pregnancy.
[The Clinical Phenotype and Molecular Pathogenic Mechanism of a Family with Hereditary Coagulation Factor V Deficiency].
Zhongguo Shi Yan Xue Ye Xue Za Zhi
December 2024
Department of Hematology, The Second Hospital of Shanxi Medical University, Taiyuan 030000, Shanxi Province, China.
Objective: To investigate the clinical phenotype and molecular pathogenic mechanism of a hereditary coagulation factor V deficiency (FⅤD) family.
Methods: A phase I assay was used to measure coagulation factors II, V, VII, VIII, IX, X, Ⅺ, Ⅻ (FⅡ∶C, FⅤ∶C, FⅦ∶C, FⅧ∶C, FⅨ∶C, FⅩ∶C, FⅪ∶C, FⅫ∶C), activated partial thromboplastin time (APTT) and prothrombin time (PT) to determine the clinical phenotype and molecular pathogenesis of F VD. Prothrombin time (PT) were used for phenotypic identification; high-throughput exome sequencing was applied to screen the whole gene variants, and Sanger sequencing was used to verify the suspected variants in gene; MutationTaster, PolyPhen-2 bioinformatics software was used to predict the pathogenicity of the variants, ClustalX software was used to analyze the amino acid conservatism, and PyMol software was used to simulate the model of the mutant protein.
Rare Prekallikrein Deficiency Identified During Workup of Isolated Prolonged Activated Partial Thromboplastin Time.
Ochsner J
January 2024
Department of Hematology and Hematopoietic Cell Transplantation, City of Hope National Medical Center, Irvine, CA.
Prolongation of the activated partial thromboplastin time (aPTT) may signify an intrinsic factor deficiency or the presence of an inhibitor of coagulation, potentially placing a patient at increased risk for bleeding. However, a contact factor (ie, factor XII, prekallikrein, and high molecular weight kininogen) deficiency, which may also cause a prolonged aPTT, is not associated with clinical bleeding. A 71-year-old female had an isolated prolonged aPTT discovered during preoperative laboratory testing.
View Article and Find Full Text PDFQinghaienin, a novel anticoagulation protein from the hard tick Haemaphysalis qinghaiensis, inhibits the activation of factor XII by competing for anionic surfaces.
Int J Biol Macromol
December 2024
Laboratory of Molecular Medicine, Ordos Central Hospital, Inner Mongolia Autonomous Region, Ordos 017000, China; Ordos Clinical Medical College, Inner Mongolia Medical University, Ordos 017000, China; Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou 014000, China. Electronic address:
Salivary proteins of ticks can inhibit host hemostatic and inflammatory responses during the blood-sucking process of the parasites. A cDNA sequence, Hq021, was identified from a cDNA library of Haemaphysalis qinghaiensis. Hq021 encodes a mature protein containing 182 amino acids with a molecular mass of 20.
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