Thrombin, a proteolytic enzyme, plays an essential role in catalyzing many blood clotting reactions. Thrombin can act as a marker for some blood-related diseases, such as leukemia, thrombosis, Alzheimer's disease and liver disease. Therefore, its diagnosis is of great importance in the fields of biological and medical research. Biosensors containing sandwich-type structures have attracted much consideration owing to their superior features such as reproducible and stable responses with easy improvement in the sensitivity of detection. Sandwich-type platforms can be designed using a pair of receptors that are able to bind to diverse locations of the same target. Herein, we investigate recent advances in the progress and applications of thrombin aptasensors containing a sandwich-type structure, in which two thrombin-binding aptamers (TBAs) identify different parts of the thrombin molecule, leading to the formation of a sandwich structure and ultimately signal detection. We also discuss the pros and cons of these approaches and outline the most logical approach in each section.
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http://dx.doi.org/10.1039/d3ay02196c | DOI Listing |
Best Pract Res Clin Gastroenterol
December 2024
Department of Hepatology, Postgraduate Institute of Medical Education and Research, Chandigarh, India. Electronic address:
Acute liver failure (ALF) is a rare but rapidly progressing syndrome, marked by severe liver dysfunction and altered mental status. While definitions of ALF vary across different guidelines, with timelines ranging from 4 to 26 weeks between jaundice onset and encephalopathy, the key defining features remain encephalopathy and coagulopathy. Elevated coagulation markers, particularly prothrombin time and international normalized ratio, have traditionally been associated with bleeding risks.
View Article and Find Full Text PDFHeart Rhythm
December 2024
Department of Neurology, The Chaim Sheba Medical Center, Ramat Gan 5266202, Israel; Department of Neurology and Neurosurgery, Faculty of Medicine and Health Sciences, Tel Aviv University, Tel Aviv 6997801, Israel; The TELEM Rubin Excellence in Biomedical Research Program, The Chaim Sheba Medical Center, Ramat Gan, Israel. Electronic address:
Background: Secondary prevention of acute ischemic stroke depends on identifying the source of cryptogenic clots. We previously reported that secreted thrombin activity from endovascularly retrieved clots is significantly different in atrial fibrillation (AF) versus atherosclerosis (AS) related, probably due to the in-vivo biology of the clots.
Objectives: To validate and optimize thrombin secretion for clot source diagnosis.
Clin Exp Med
December 2024
Discovery Research, Scientific Innovation Office, Grifols, Palou 3, 08150, Parets del Vallès, Barcelona, Spain.
Hemophilia A (HA) patients under emicizumab prophylaxis may require the concomitant use of procoagulant factors for breakthrough bleedings or immune tolerance induction (ITI). The aim of this study is to evaluate the ex vivo procoagulant effect of plasma-derived FVIII concentrates containing von Willebrand factor (pdFVIII/VWF) in samples from patients with severe HA without inhibitors on emicizumab prophylaxis. Samples from healthy controls (HC) and HA patients were drawn in sodium citrate plus corn trypsin inhibitor tubes and spiked with increasing concentrations of pdFVIII/VWF concentrates (10-400 IU/dL) (Fanhdi/Alphanate, Grifols), activated prothrombin complex concentrate (aPCC, 0.
View Article and Find Full Text PDFOrphanet J Rare Dis
December 2024
Thrombosis Research Center, Beijing Jishuitan Hospital, Capital Medical University, Xicheng District, Beijing, 100035, China.
Background: Identification of mutations in the SERPINC1 has illuminated the intricate pathways underlying antithrombin (AT) deficiency. Our group identified a variation in the SERPINC1 gene (c.964 A > T, p.
View Article and Find Full Text PDFBMC Cardiovasc Disord
December 2024
Department of Cardiology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu Province, China.
Introduction: The activation of the plasmatic coagulation system is a significant contributor to acute myocardial infarction (AMI). This study aimed to investigate the association between the levels of tissue plasminogen activator-inhibitor complex (t-PAIC), thrombin-antithrombin complex (TAT), plasmin-α2 plasmin-inhibitor complex (PIC), and thrombomodulin (TM) with clinical outcomes in patients with AMI.
Methods: Blood samples were collected from 368 patients presenting with acute myocardial infarction in the emergency department to assess levels of t-PAIC, TAT, PIC, and TM.
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