35,720 results match your criteria tissue plasminogen

Glucose -regulated protein (GRP78) is an important cell surface receptor for viral invasion, cancers and neurological disorders.

IUBMB Life 2021 May 7. Epub 2021 May 7.

Department of Pathology, Duke University Medical Center, Durham, North Carolina.

The 78 kDa glucose-regulated protein (GRP78) is an endoplasmic reticulum (ER)-resident molecular chaperone. GRP78 is a member of the 70 kDa heat shock family of proteins involved in correcting and clearing misfolded proteins in the ER. In response to cellular stress, GRP78 escapes from the ER and moves to the plasma membrane where it (i) functions as a receptor for many ligands, and (ii) behaves as an autoantigen for autoantibodies that contribute to human disease and cancer. Read More

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Low-soluble TREM-like transcript-1 levels early after severe burn reflect increased coagulation disorders and predict 30-day mortality.

Burns 2020 Dec 15. Epub 2020 Dec 15.

Fujian Provincial Key Laboratory of Burn and Trauma, Fujian Burn Institute, Fujian Burn Medical Center, Fujian Medical University Union Hospital, Fuzhou 350001, Fujian, China. Electronic address:

Background: Patients with severe burns often show systemic coagulation changes in the early stage and even develop extensive coagulopathy. Previous studies have confirmed that soluble TREM-like transcript-1 (sTLT-1) mediates a novel mechanism of haemostasis and thrombosis in inflammatory vascular injury. At present, the role of sTLT-1 in patients with severe burns is not well known. Read More

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December 2020

Puerperium Stroke and Subsequent Tissue-Type Plasminogen Activator-Induced Hemorrhage: A Case Report.

A A Pract 2021 May 6;15(5):e01459. Epub 2021 May 6.

From the Anesthesiology Institute.

We report a case of ischemic stroke in an apparently healthy 35-year-old gravida 2 para 1 who was treated with tissue-type plasminogen activator (tPA) 9 hours after vaginal delivery that resulted in severe hemorrhage. Limited data suggest use of thrombolytics in pregnancy is safe, but there is a paucity of evidence assessing their use immediately postpartum. We describe successful combination of tPA with endovascular mechanical thrombectomy (EMT) for treatment of postpartum stroke, which was followed by extensive uterine bleeding. Read More

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Remote Ischemic Conditioning and Stroke Recovery.

Neurorehabil Neural Repair 2021 May 6:15459683211011224. Epub 2021 May 6.

University of Ottawa, ON, Canada.

Remote ischemic conditioning (RIC) is a noninvasive procedure whereby several periods of ischemia are induced in a limb. Although there is growing interest in using RIC to improve stroke recovery, preclinical RIC research has focused exclusively on neuroprotection, using male animals and the intraluminal suture stroke model, and delivered RIC at times not relevant to either brain repair or behavioral recovery. In alignment with the Stroke Recovery and Rehabilitation Roundtable, we address these shortcomings. Read More

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Cadmium induces plasminogen activator inhibitor-1 via Smad2/3 signaling pathway in human endothelial EA.hy926 cells.

J Toxicol Sci 2021 ;46(5):249-253

Faculty of Pharmaceutical Sciences, Toho University.

Modulation of the blood coagulation fibrinolytic system is an essential function of vascular endothelial cells. Tissue plasminogen activator (t-PA) and plasminogen activator inhibitor-1 (PAI-1) are major fibrinolytic regulatory proteins synthesized by vascular endothelial cells; fibrinolytic activity is dependent on the balance between these proteins. Previously, we have reported that cadmium, an initiator of ischemic heart disease, induces PAI-1 expression and suppresses fibrinolytic activity in cultured human vascular endothelial cells. Read More

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January 2021

Catheter-directed thrombolytic infusion for thrombosed arteriovenous fistulas with a large clot burden: A case series.

J Vasc Access 2021 May 4:11297298211011916. Epub 2021 May 4.

Division of Nephrology and Hypertension, Louisiana State University Health Science Center in Shreveport, LA, USA.

Arteriovenous fistula (AVF) thrombosis occurs less often when compared to arteriovenous grafts. Since the number of AVFs has increased in the United States, AVF thrombosis is seen more frequently today. AVF thrombectomy can be tedious, requires physician ingenuity, and many times results in failure. Read More

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Predictors of Outcomes in Patients With Mild Ischemic Stroke Symptoms: MaRISS.

Stroke 2021 May 5:STROKEAHA120032809. Epub 2021 May 5.

Department of Neurology, Massachusetts General Hospital/Harvard Medical School, Boston (L.H.S.).

Background And Purpose: Although most strokes present with mild symptoms, these have been poorly represented in clinical trials. The objective of this study is to describe multidimensional outcomes, identify predictors of worse outcomes, and explore the effect of thrombolysis in this population.

Methods: This prospective observational study included patients with ischemic stroke or transient ischemic attack, a baseline National Institutes of Health Stroke Scale (NIHSS) score 0 to 5, presenting within 4. Read More

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Imbalance in Coagulation/Fibrinolysis Inhibitors Resulting in Extravascular Thrombin Generation in Gliomas of Varying Levels of Malignancy.

Biomolecules 2021 Apr 29;11(5). Epub 2021 Apr 29.

Department of Chemistry, Wayne State University, Detroit, MI 48202, USA.

Neoplastic processes are integrally related to disturbances in the mechanisms regulating hemostatic processes. Brain tumors, including gliomas, are neoplasms associated with a significantly increased risk of thromboembolic complications, affecting 20-30% of patients. As gliomas proliferate, they cause damage to the brain tissue and vascular structures, which leads to the release of procoagulant factors into the systemic circulation, and hence systemic activation of the blood coagulation system. Read More

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Reverse tracing anti-thrombotic active ingredients from dried Rehmannia Radix based on multidimensional spectrum-effect relationship analysis of steaming and drying for nine cycles.

J Ethnopharmacol 2021 May 1:114177. Epub 2021 May 1.

Research Center for Traceability and Standardization of TCMs, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 211198, China; State Key Laboratory of Natural Medicines, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing, 210009, China. Electronic address:

Ethnopharmacological Relevance: In traditional Chinese medicine (TCM) and modern pharmacodynamics, dried Rehmannia Radix (DRR) possesses prominent anti-thrombotic activity that decreases after processing by nine steaming and drying cycles to develop processed Rehmannia Radix (PRR). Due to the complexity of the DRR components, the chemical mechanism leading to efficacy changes of DRR caused by processing is still unclear.

Aim Of Study: This study aimed to trace the anti-thrombotic active compounds of DRR and different degrees of processed RR (PRR) and to evaluate the synergistic effects among different active components. Read More

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Red cell index: A novel biomarker for 3-month mortality in acute ischemic stroke patients treated with intravenous thrombolysis.

Brain Behav 2021 May 4:e02170. Epub 2021 May 4.

Department of Neurology, The Third Affiliated Hospital of Wenzhou Medical University, Wenzhou, China.

Background: The red cell index (RCI) was described as a biomarker for evaluating respiratory function in previous studies, but the relationship between RCI and stroke, remained a mystery. The present study aimed to probe the association between RCI at 24-hr and 3-month mortality and functional outcomes among acute ischemic stroke (AIS) patients treated with recombinant tissue plasminogen activator (r-tPA).

Methods: A total of 217 AIS patients between January 2016 and January 2019 were recruited in this retrospective study. Read More

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Changes of fibrinolytic system in thrombolytic resuscitation of pulmonary thromboembolism-induced cardiac arrest model.

Int Wound J 2021 May 4. Epub 2021 May 4.

Department of Emergency, Beijing Chao-Yang Hospital, Capital Medical University, Beijing, China.

The objective of this study is to explore the changes in the coagulation and fibrinolysis system in an animal model with pulmonary embolism after cardiopulmonary bypass and to provide a theoretical basis for clinical practice. An animal model of cardiac arrest due to pulmonary embolism was established for venous thrombus (10-15 mL) in the left external jugular vein of 21 pigs. Computed tomography (CT) pulmonary arteriography was performed after the recovery of the underlying state, cardiac arrest state and spontaneous circulation, and then thrombolysis and cardiopulmonary resuscitation (recombinant tissue plasminogen activator [t-PA] 50 mg) were performed immediately. Read More

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2,5TT genotype of the MMP-9-1562C/T polymorphism may be a risk factor for thrombolytic therapy-induced hemorrhagic complications after acute ischemic stroke.

Pharmacotherapy 2021 May 4. Epub 2021 May 4.

St. Sava Hospital, Belgrade, Serbia.

Introduction: Levels of matrix metalloproteinases (MMPs) and their tissue inhibitors (TIMPs) influence recombinant tissue plasminogen activator (rtPA) therapy response in patients with acute ischemic stroke (AIS). Serum levels of MMPs and TIMPs along with the expression of genes coding these proteins are related to the recovery and appearance of adverse effects (AE) after AIS. Consequently, it is important to explore whether polymorphisms in regulatory sequences of MMPs and TIMPs are associated with rtPA response in AIS patients. Read More

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Thrombolysis of Pulmonary Emboli via Endobronchial Ultrasound-Guided Transbronchial Needle Injection.

Ann Thorac Surg 2020 Oct 24. Epub 2020 Oct 24.

Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Ontario, Canada. Electronic address:

Background: Endobronchial ultrasound-guided transbronchial needle injection (EBUS-TBNI) is a novel technique for treating peribronchial targets. The aim of this study was to evaluate preliminary feasibility of thrombolysis of pulmonary emboli via EBUS-TBNI.

Methods: Yorkshire pigs (30-48 kg) were anesthetized and mechanically ventilated. Read More

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October 2020

Compartment syndrome following use of tissue plasminogen activator for frostbite in the setting of concomitant diaphyseal tibia fracture.

OTA Int 2020 Jun 22;3(2):e079. Epub 2020 May 22.

Department of Orthpaedic Surgery, MetroHealth Medical Center, Cleveland, OH.

Background: Tissue plasminogen activator (tPA) is a thrombolytic agent increasingly being employed for the treatment of acute frostbite. Although tPA has been shown with success to increase digit salvage rates, data on potential complications, including risk of hemorrhage, is limited. As a result, acute trauma is considered a contraindication to use in many institution-based protocols. Read More

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A Serpin With a Finger in Many PAIs: PAI-1's Central Function in Thromboinflammation and Cardiovascular Disease.

Front Cardiovasc Med 2021 16;8:653655. Epub 2021 Apr 16.

Aberdeen Cardiovascular and Diabetes Centre, Institute of Medical Sciences, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, United Kingdom.

Plasminogen activator inhibitor 1 (PAI-1) is a member of the serine protease inhibitor (serpin) superfamily. PAI-1 is the principal inhibitor of the plasminogen activators, tissue plasminogen activator (tPA), and urokinase-type plasminogen activator (uPA). Turbulence in the levels of PAI-1 tilts the balance of the hemostatic system resulting in bleeding or thrombotic complications. Read More

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Angioedema after rt-PA infusion led to airway emergency: a case report of rescue treatment with fresh frozen plasma.

Braz J Anesthesiol 2021 Apr 28. Epub 2021 Apr 28.

Ospedale Maggiore, Intensive Care and Prehospital Emergency Service, Department of Anesthesia, Bologna, Italy.

The authors report the case of a 71-year-old woman presented to the Emergency Department with AIS. She was treated with rt-PA and interventional endovascular revascularization and developed rapidly progressing angioedema that led to emergency intubation. The standard treatment was not very effective and the swelling improved after infusion of fresh frozen plasma. Read More

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Functional and structural outcome after vitrectomy combined with subretinal rtPA Injection with or without additional intravitreal Bevacizumab injection for submacular hemorrhages.

PLoS One 2021 30;16(4):e0250587. Epub 2021 Apr 30.

Depatment of Ophthalmology, Knappschaft Hospital Saar, Sulzbach/Saar, Germany.

Background: To analyze the functional and anatomical outcome after vitrectomy with subretinal rtPA (recombinant tissue plasminogen activator) combined with or without an intravitreal Bevacizumab injection.

Patients And Methods: Retrospective, consecutive case series of 31 pseudophakic patients with submacular hemorrhage (SMH) due to neovascular age-related macular degeneration (AMD) treated with vitrectomy, subretinal rtPA and pneumatic air displacement with or without an additional intravitreal Bevacizumab injection. The primary endpoints were best-corrected visual acuity (BCVA), and central macular thickness (CMT) measured by SD‑OCT. Read More

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Plasminogen Activators in Neurovascular and Neurodegenerative Disorders.

Int J Mol Sci 2021 Apr 22;22(9). Epub 2021 Apr 22.

Neuropharmacology and Neurological Diseases Section, Yerkes National Primate Research Center, Atlanta, GA 30329, USA.

The neurovascular unit (NVU) is a dynamic structure assembled by endothelial cells surrounded by a basement membrane, pericytes, astrocytes, microglia and neurons. A carefully coordinated interplay between these cellular and non-cellular components is required to maintain normal neuronal function, and in line with these observations, a growing body of evidence has linked NVU dysfunction to neurodegeneration. Plasminogen activators catalyze the conversion of the zymogen plasminogen into the two-chain protease plasmin, which in turn triggers a plethora of physiological events including wound healing, angiogenesis, cell migration and inflammation. Read More

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A Novel Volume-Stable Collagen Matrix Induces Changes in the Behavior of Primary Human Oral Fibroblasts, Periodontal Ligament, and Endothelial Cells.

Int J Mol Sci 2021 Apr 14;22(8). Epub 2021 Apr 14.

Department of Periodontology, School of Dental Medicine, University of Bern, 3010 Bern, Switzerland.

The aim of the present study was to investigate the influence of a novel volume-stable collagen matrix (vCM) on early wound healing events including cellular migration and adhesion, protein adsorption and release, and the dynamics of the hemostatic system. For this purpose, we utilized transwell migration and crystal violet adhesion assays, ELISAs for quantification of adsorbed and released from the matrix growth factors, and qRT-PCR for quantification of gene expression in cells grown on the matrix. Our results demonstrated that primary human oral fibroblasts, periodontal ligament, and endothelial cells exhibited increased migration toward vCM compared to control cells that migrated in the absence of the matrix. Read More

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Mechanical Thrombectomy in Stroke. Experience from Switching from Stent Retriever Only to Stent Retriever Combined with Aspiration Catheter.

J Clin Med 2021 Apr 21;10(9). Epub 2021 Apr 21.

Department of Neurosurgery and Neurology, Faculty of Health Sciences, Nicolaus Copernicus University in Toruń, Ludwik Rydygier Collegium Medicum, Ujejskiego 75 Street, 85-168 Bydgoszcz, Poland.

Endovascular treatment is a rapidly evolving technique; therefore, there is a constant need to evaluate this method and its modifications. This paper discusses a single-center experience and the results of switching from the stent retriever only (SO) mechanical thrombectomy (MT) to the combined approach (CA), with a stent retriever and aspiration catheters.

Methods: The study involved a retrospective analysis of 70 patients undergoing MT with the use of either SO or CA. Read More

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Overview of the Therapeutic Potential of Aptamers Targeting Coagulation Factors.

Int J Mol Sci 2021 Apr 9;22(8). Epub 2021 Apr 9.

Department of Biology, Case Western Reserve University, Cleveland, OH 44106, USA.

Aptamers are single-stranded DNA or RNA sequences that bind target molecules with high specificity and affinity. Aptamers exhibit several notable advantages over protein-based therapeutics. Aptamers are non-immunogenic, easier to synthesize and modify, and can bind targets with greater affinity. Read More

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Chronic Low Grade Inflammation in Pathogenesis of PCOS.

Int J Mol Sci 2021 Apr 6;22(7). Epub 2021 Apr 6.

Department of Gynaecological Endocrinology, Poznan University of Medical Sciences, 60-535 Poznan, Poland.

Polycystic ovary syndrome (PCOS) is a one of the most common endocrine disorders, with a prevalence rate of 5-10% in reproductive aged women. It's characterized by (1) chronic anovulation, (2) biochemical and/or clinical hyperandrogenism, and (3) polycystic ovarian morphology. PCOS has significant clinical implications and can lead to health problems related to the accumulation of adipose tissue, such as obesity, insulin resistance, metabolic syndrome, and type 2 diabetes. Read More

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Astragalin Inhibits Cigarette Smoke-Induced Pulmonary Thrombosis and Alveolar Inflammation and Disrupts PAR Activation and Oxidative Stress-Responsive MAPK-Signaling.

Int J Mol Sci 2021 Apr 1;22(7). Epub 2021 Apr 1.

Department of Food and Nutrition and Korean Institute of Nutrition, Hallym University, Chuncheon 24252, Korea.

Epidemiological evidence shows that smoking causes a thrombophilic milieu that may play a role in the pathophysiology of chronic obstructive pulmonary disease (COPD) as well as pulmonary thromboembolism. The increased nicotine level induces a prothrombotic status and abnormal blood coagulation in smokers. Since several anticoagulants increase bleeding risk, alternative therapies need to be identified to protect against thrombosis without affecting hemostasis. Read More

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Prospects of Therapeutic Target and Directions for Ischemic Stroke.

Pharmaceuticals (Basel) 2021 Apr 1;14(4). Epub 2021 Apr 1.

Research Institute, e-biogen Inc., Seoul 07282, Korea.

Stroke is a serious, adverse neurological event and the third leading cause of death and disability worldwide. Most strokes are caused by a block in cerebral blood flow, resulting in neurological deficits through the death of brain tissue. Recombinant tissue plasminogen activator (rt-PA) is currently the only immediate treatment medication for stroke. Read More

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ASPECTS-Region-Dependent Functional Outcomes after Endovascular Therapy in Patients with Cardioembolic Stroke.

J Stroke Cerebrovasc Dis 2021 Apr 26;30(7):105814. Epub 2021 Apr 26.

Department of Neurosurgery, Hyogo College of Medicine, Nishinomiya, Japan. Electronic address:

Objectives: Cardioembolic stroke has a poor prognosis. We evaluated the region-dependent efficacy of endovascular therapy (EVT) based on diffusion-weighted imaging-Alberta Stroke Program Early CT Score (DWI-ASPECTS).

Methods: This post-hoc analysis of the RELAXED study, which investigated the optimal timing of rivaroxaban to prevent nonvalvular atrial fibrillation (NVAF) recurrence in patients with acute ischemic stroke (AIS), included NVAF patients admitted with AIS or transient ischemic attack in the middle cerebral artery (MCA), with internal carotid artery (ICA), M1, or M2-MCA occlusion. Read More

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Comparison of ultrasound with biomarkers to identify large-for-gestational age in women screened for gestational diabetes mellitus.

J Matern Fetal Neonatal Med 2021 Apr 28:1-6. Epub 2021 Apr 28.

UCD Centre for Human Reproduction, Coombe Women and Infants University Hospital, Dublin, Ireland.

Objective: Large-for-gestational-age (LGA) is associated with both fetal and maternal complications. One of the few modifiable risk factors for LGA is Gestational Diabetes Mellitus (GDM); for this reason, fetal growth is usually monitored by ultrasound in the third trimester. This prospective study compared a panel of ten established biomarkers measured at the time of selective screening for GDM at 26-28 weeks gestation with the ultrasound prediction of LGA. Read More

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[Screening of intravenous thrombolysis for eligible patients with ischemic stroke].

H Q Qin Y J Wang

Zhonghua Nei Ke Za Zhi 2021 May;60(5):476-482

Department of Neurology, Beijing Tiantan Hospital, Capital Medical University; China National Clinical Research Center for Neurological Diseases, Beijing 100070, China.

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Effectiveness of intravenous r-tPA versus UK for acute ischaemic stroke: a nationwide prospective Chinese registry study.

Stroke Vasc Neurol 2021 Apr 26. Epub 2021 Apr 26.

Neurology, General Hospital of Northern Theatre Command, Shenyang, Liaoning, China

Background: Intravenous recombinant tissue plasminogen activator (r-tPA) and urokinase (UK) are both recommended for the treatment of acute ischaemic stroke (AIS) in China, but with few comparative outcome data being available. We aimed to compare the outcomes of these two thrombolytic agents for the treatment of patients within 4.5 hours of onset of AIS in routine clinical practice in China. Read More

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Preexisting Mild Cognitive Impairment, Dementia, and Receipt of Treatments for Acute Ischemic Stroke.

Stroke 2021 Apr 27:STROKEAHA120032258. Epub 2021 Apr 27.

Department of Neurology and Stroke Program, University of Michigan, Ann Arbor. (D.A.L., L.B.M., D.B.Z., L.D.L.).

Background And Purpose: Differences in acute ischemic stroke (AIS) treatment by cognitive status are unclear, but some studies have found patients with preexisting dementia get less treatment. We compared AIS care by preexisting cognitive status.

Methods: Cross-sectional analysis of prospectively obtained data on 836 adults ≥45 with AIS from the population-based Brain Attack Surveillance in Corpus Christi project from 2008 to 2013. Read More

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