Abstract:
:The anticoagulant properties of a novel RNA aptamer that binds FIXa depend collectively on the intensity of surface contact activation of human blood plasma, aptamer concentration, and its binding affinity for FIXa. Accordingly, anticoagulation efficiency of plasma containing any particular aptamer concentration is low when coagulation is strongly activated by hydrophilic surfaces compared to the anticoagulation efficiency in plasma that is weakly activated by hydrophobic surfaces. Anticoagulation efficiency is lower at hypothermic temperatures possibly because aptamer-FIXa binding decreases with decreasing temperatures. Experimental results demonstrating these trends are qualitatively interpreted in the context of a previously established model of anticoagulation efficiency of thrombin-binding DNA aptamers that exhibit anticoagulation properties similar to the FIXa aptamer. In principle, FIXa aptamer anticoagulants should be more efficient and therefore more clinically useful than thrombin-binding aptamers because aptamer binding to FIXa competes only with FX that is at much lower blood concentration than fibrinogen (FI) that competes with thrombin-binding aptamers. Our findings may have translatable relevance in the application of aptamer anticoagulants for clinical conditions in which blood is in direct contact with non-biological surfaces such as those encountered in cardiopulmonary bypass circuits.
journal_name
J Thromb Thrombolysisjournal_title
Journal of thrombosis and thrombolysisauthors
Krishnan A,Vogler EA,Sullenger BA,Becker RCdoi
10.1007/s11239-012-0778-7subject
Has Abstractpub_date
2013-01-01 00:00:00pages
48-56issue
1eissn
0929-5305issn
1573-742Xjournal_volume
35pub_type
杂志文章abstract::Patients with heparin-induced thrombocytopenia (HIT) type II require anticoagulation with non-heparin immediate acting anticoagulants. Danaparoid may cross react with HIT-antibodies and lepirudin may generate anti-lepirudin antibodies influencing anticoagulation. We hypothesised, that the synthetic small molecular thr...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章
doi:10.1007/s11239-005-0942-4
更新日期:2005-02-01 00:00:00
abstract::Heparin-induced thrombocytopenia (HIT) is a prothrombotic condition and it is associated with increased in vivo thrombin generation that needs to be treated with non-heparin anticoagulants such as direct thrombin inhibitors (DTIs). DTIs require parenteral administration and are associated with a non negligible risk of...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章
doi:10.1007/s11239-015-1208-4
更新日期:2015-10-01 00:00:00
abstract::A significant proportion of the outcomes reported in trials assessing venous thromboembolism (VTE) prophylaxis in medical patients are related to asymptomatic events found on routine imaging studies. The implications of these events are controversial. Moreover, such trials did not always reflect the patient mix in tod...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章,评审
doi:10.1007/s11239-012-0730-x
更新日期:2012-07-01 00:00:00
abstract::Several autopsy studies showed microthrombi in pulmonary circulation of severe COVID-19 patients. The major limitation of these investigations is that the autopsy provided static information. Some of these alterations could be secondary to the disseminated intravascular coagulation (DIC) observed as the final standard...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章
doi:10.1007/s11239-020-02245-x
更新日期:2020-11-01 00:00:00
abstract::The following manuscript presents two cases of ischemic stroke secondary to traumatic internal carotid artery thrombosis with concomitant middle cerebral artery thrombosis occurring very rarely in the medico-legal practice. Penetrating neck trauma due to an occupational accident and multiple head and neck trauma secon...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章
doi:10.1007/s11239-014-1077-2
更新日期:2014-10-01 00:00:00
abstract::Hospital acquired venous thromboembolism (VTE) is a major source of morbidity and mortality, yet proven prevention measures are often underutilized. The lack of a validated VTE risk assessment model, difficulty integrating VTE risk assessment and prevention protocols into the routine process of care, and the lack of s...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章
doi:10.1007/s11239-009-0405-4
更新日期:2010-02-01 00:00:00
abstract::Early rapid platelet inhibition with abciximab before primary percutaneous coronary intervention (PPCI) for ST-segment elevation myocardial infarction (STEMI) is suggested as beneficial. In previous studies on early abciximab administration clopidogrel was administered in cathlab in low loading dose. We investigated t...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1007/s11239-010-0461-9
更新日期:2010-10-01 00:00:00
abstract::Several newer anticoagulants are under clinical development. Recently two of them, Dabigatran etexilate/Pradaxa. and Rivaroxaban/Xarelto obtained marketing authorization in Europe and Canada for the prevention of thromboembolic events following major orthopedic surgery such as total hip and knee replacement. The resul...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章,评审
doi:10.1007/s11239-009-0392-5
更新日期:2010-01-01 00:00:00
abstract::To investigate the prevalence of permanent atrial fibrillation (AF), its clinical associated conditions and treatment status in the elderly population in rural Greece. 720 people (46.1% males) older than 65 years (mean age: 72.5 +/- 5.7 years) living in four villages in rural Greece were screened with an electrocardio...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章
doi:10.1007/s11239-009-0422-3
更新日期:2010-07-01 00:00:00
abstract::It has been reported that platelet expression and plasma levels of soluble P-selectin are increased in patients with unstable coronary artery syndromes. However, the origin of soluble P-selectin remains unknown. We sought to determine whether platelet expression of P-selectin correlates with plasma levels in the popul...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1023/a:1018738502654
更新日期:2000-08-01 00:00:00
abstract::Stroke and venous thromboembolism (VTE) are serious and preventable thrombotic events in patients with atrial fibrillation (AF) and who undergo surgery or hospitalization, respectively. Nevertheless, thromboprophylaxis remains greatly underused. The National Quality Forum, the Agency for Healthcare Research and Qualit...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章,评审
doi:10.1007/s11239-013-0874-3
更新日期:2014-01-01 00:00:00
abstract::According to our personal experience and to the study of the literature, 11 cases of venous thrombosis have been described as sporadic reports in patients with severe (homozygous) factor XII (FXII) deficiencies. In every cases but 4, associated risk factors were found to be present (pregnancy, post-partum period, surg...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章,评审
doi:10.1023/B:THRO.0000037670.42776.cd
更新日期:2004-04-01 00:00:00
abstract::Glycoprotein (GP) IIb/IIIa inhibitors reduce major adverse coronary events in patients with acute coronary syndromes undergoing percutaneous coronary interventions (PCI). Unlike the other GPIIb/IIIa inhibitors, eptifibatide is rarely associated with thrombocytopenia with only a few cases reported in the medical litera...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章
doi:10.1007/s11239-007-0166-x
更新日期:2008-04-01 00:00:00
abstract::This study investigates the association between the treatment with heparin and mortality in patients admitted with Covid-19. Routinely recorded, clinical data, up to the 24th of April 2020, from the 2075 patients with Covid-19, admitted in 17 hospitals in Spain between the 1st of March and the 20th of April 2020 were ...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章,多中心研究
doi:10.1007/s11239-020-02162-z
更新日期:2020-08-01 00:00:00
abstract::C-reactive protein (CRP) is an independent predictor of risk in ACS patients, and it has been previously shown that percutaneous coronary intervention (PCI) is associated with an early rise in CRP. To assess the long-term relationship between PCI and CRP, we compared CRP levels at baseline, 30 days, 4 months and 24 mo...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章,随机对照试验
doi:10.1007/s11239-010-0463-7
更新日期:2010-07-01 00:00:00
abstract::Thrombosis resolution is an important component of treatment for deep vein thrombosis (DVT) and multiple anticoagulants are now available. It is unknown whether rivaroxaban contributes to a higher degree of thrombus resolution compared to conventional anticoagulation with warfarin. Our objective was to compare thrombu...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章
doi:10.1007/s11239-019-01932-8
更新日期:2020-02-01 00:00:00
abstract::Argatroban, a hepatically metabolized direct thrombin inhibitor, is approved for anticoagulation in patients with or at risk of heparin-induced thrombocytopenia (HIT) undergoing percutaneous coronary intervention (PCI). We investigated the effect of renal function on argatroban therapy during PCI. From previous argatr...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章
doi:10.1007/s11239-009-0357-8
更新日期:2010-01-01 00:00:00
abstract::We included acute ischemic stroke (AIS) patients who received recombinant tissue plasminogen activator (rt-PA) at three stroke centers via either interhospital transfer or direct presentation and compared the clinical outcomes and time metrics to analyze the impact of interhospital transfer on intravenous thrombolysis...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章,多中心研究
doi:10.1007/s11239-019-01912-y
更新日期:2019-11-01 00:00:00
abstract::To assess the effect of cessation of dual antiplatelet therapy (DAPT) regimens containing 2nd generation P2Y12 inhibitors on platelet reactivity, in patients who completed 12 months of DAPT following an acute myocardial infarction. Clinical data has shown an increased cardiovascular risk in the 90 days following cessa...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章
doi:10.1007/s11239-018-1701-7
更新日期:2018-10-01 00:00:00
abstract::Anticoagulation treatment is effective in preventing both death and recurrence in patients with venous thromboembolism (VTE), but at the same time confers a substantial risk of bleeding complications. The aim of this study was to examine the rate of and predictors for bleeding complications in VTE patients on warfarin...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章
doi:10.1007/s11239-015-1305-4
更新日期:2016-02-01 00:00:00
abstract::The authors present a fatal case of late thrombosis of paclitaxel-eluting stent implanted in the left main stem occurring 6 months after the procedure and 3 weeks after the cessation of clopidogrel. An autopsy has shown the lack of endothelization of deployed stent. ...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章
doi:10.1007/s11239-007-0080-2
更新日期:2008-10-01 00:00:00
abstract::Inherited afibrinogenemia and hypofibrinogenemia are rare bleeding disorders characterized by markedly reduced levels of fibrinogen in blood. Thrombotic complications in these disorders have been rarely described. We performed a multicenter retrospective study and reviewed the occurrence of thrombotic complications am...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章,多中心研究
doi:10.1007/s11239-015-1325-0
更新日期:2016-08-01 00:00:00
abstract::Rivaroxaban is a direct factor Xa inhibitor, which is rapidly absorbed in the upper gastrointestinal (GI) tract. In large trials, it has been shown to be effective and safe in VTE treatment. However, in these trials patients with morbid obesity were not reported and it is unknown if the standard dosage of 20 mg rivaro...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章
doi:10.1007/s11239-013-0891-2
更新日期:2013-11-01 00:00:00
abstract::The optimal antithrombotic therapy for patients undergoing TAVI with concomitant indication for oral anticoagulation remains unclear. In this high-risk population group, there is a paucity of data with regards to the use of DOACs. In the present study we compared long-term clinical outcomes of TAVI patients requiring ...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章
doi:10.1007/s11239-019-01968-w
更新日期:2020-07-01 00:00:00
abstract::Measurements of infarct size by use of tripenyltetrazoliumchloride (TTC) is a widely accepted method used to delineate the extent of myocardial necrosis following coronary occlusion and reperfusion in various animal experiments. There is controversy, however, regarding the optimal reperfusion time for estimating the m...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章
doi:10.1023/a:1018770711705
更新日期:2000-10-01 00:00:00
abstract::No study investigated the possible detrimental effect of stress hyperglycemia on patients affected acute ischemic stroke (AIS) undergoing intravenous thrombolysis (IVT). A new index, the glucose-to-glycated hemoglobin ratio (GAR), has been developed for assessing stress hyperglycemia. We retrospectively analyzed data ...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章
doi:10.1007/s11239-020-02252-y
更新日期:2020-08-24 00:00:00
abstract::The link between myeloma and thrombosis is well established. Monoclonal gammopathy of undetermined significance (MGUS) has also been associated with an increased risk of thrombosis. It was recently demonstrated that patients with myeloma display changes in thromboelastometry that may indicate a prothrombotic state. Th...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章
doi:10.1007/s11239-014-1140-z
更新日期:2015-02-01 00:00:00
abstract::We describe a case of a 67-year-old woman with a history of cerebral infarction and pulmonary embolism that presented with chest pain. Subsequent evaluation resulted in a diagnosis of acute myocardial infarction and occult DVT, and imaging revealed a rare congenital absence of the infra-renal portion of the inferior v...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章
doi:10.1007/s11239-005-1380-z
更新日期:2005-04-01 00:00:00
abstract::The predictive value of and the influencing factors associated with early neurological improvement (ENI) among patients with acute basilar artery occlusion (BAO) have not been well studied. The present study aimed to evaluate whether ENI predicted a better functional outcome and to identify the influencing factors of ...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章
doi:10.1007/s11239-020-02153-0
更新日期:2021-01-01 00:00:00
abstract::We have applied the low molecular weight heparin dalteparin as once-daily subcutaneous injections to the treatment of deep vein thrombosis (DVT) on an outpatient basis since 1994. Until today, 377 consecutive patients with DVT below the inguinal ligament have been treated at home with dalteparin. The patients administ...
journal_title:Journal of thrombosis and thrombolysis
pub_type: 杂志文章
doi:10.1023/A:1008866025015
更新日期:1998-09-01 00:00:00