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Tissue plasminogen activator

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https://www.readbyqxmd.com/read/29467974/stroke-simulation-improves-acute-stroke-management-a-systems-based-practice-experience
#1
Tapan Mehta, Sara Strauss, Dawn Beland, Gilbert Fortunato, Ilene Staff, Nora Lee
Background : Literature on the effectiveness of simulation-based medical education programs for caring for acute ischemic stroke (AIS) patients is limited. Objective : To improve coordination and door-to-needle (DTN) time for AIS care, we implemented a stroke simulation training program for neurology residents and nursing staff in a comprehensive stroke center. Methods : Acute stroke simulation training was implemented for first-year neurology residents in July 2011...
February 2018: Journal of Graduate Medical Education
https://www.readbyqxmd.com/read/29467906/%C3%AE-elemene-enhances-anticancer-and-anti-metastatic-effects-of-osteosarcoma-of-ligustrazine-in-vitro-and-in-vivo
#2
Min Fang, Xiaolong Mei, Hui Yao, Tao Zhang, Tao Zhang, Na Lu, Yanshi Liu, Wenyue Xu, Chunyou Wan
The present study aimed to determine the anticancer effects of the combination of β-elemene and ligustrazine in vitro as well as in in vivo . Following evaluation using an MTT assay, β-elemene, ligustrazine and the β-elemene-ligustrazine combination treatments all exhibited the capacity to inhibit the growth of OS-732 cells, with inhibitory rates of 43.3, 54.4, and 75.0%, respectively. Using a flow cytometry assay, it was determined that the β-elemene-ligustrazine combination possessed the highest apoptotic rate (30...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29467713/potential-of-stem-cell-based-therapy-for-ischemic-stroke
#3
REVIEW
Hany E Marei, A Hasan, R Rizzi, A Althani, N Afifi, C Cenciarelli, Thomas Caceci, Ashfaq Shuaib
Ischemic stroke is one of the major health problems worldwide. The only FDA approved anti-thrombotic drug for acute ischemic stroke is the tissue plasminogen activator. Several studies have been devoted to assessing the therapeutic potential of different types of stem cells such as neural stem cells (NSCs), mesenchymal stem cells, embryonic stem cells, and human induced pluripotent stem cell-derived NSCs as treatments for ischemic stroke. The results of these studies are intriguing but many of them have presented conflicting results...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29467474/an-in-vitro-proof-of-principle-study-of-sonobactericide
#4
Kirby R Lattwein, Himanshu Shekhar, Willem J B van Wamel, Tammy Gonzalez, Andrew B Herr, Christy K Holland, Klazina Kooiman
Infective endocarditis (IE) is associated with high morbidity and mortality rates. The predominant bacteria causing IE is Staphylococcus aureus (S. aureus), which can bind to existing thrombi on heart valves and generate vegetations (biofilms). In this in vitro flow study, we evaluated sonobactericide as a novel strategy to treat IE, using ultrasound and an ultrasound contrast agent with or without other therapeutics. We developed a model of IE biofilm using human whole-blood clots infected with patient-derived S...
February 21, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29466706/identification-and-characterization-of-taenia-solium-enolase-as-a-plasminogen-binding-protein
#5
Dolores A Ayón-Núñez, Gladis Fragoso, Clara Espitia, Martín García-Varela, Xavier Soberón, Gabriela Rosas, Juan P Laclette, Raúl J Bobes
The larval stage of Taenia solium (cysticerci) is the causal agent of human and swine cysticercosis. When ingested by the host, T. solium eggs are activated and hatch in the intestine, releasing oncospheres that migrate to various tissues and evolve into cysticerci. Plasminogen (Plg) receptor proteins have been reported to play a role in migration processes for several pathogens. This work is aimed to identify Plg-binding proteins in T. solium cysticerci and determine whether T. solium recombinant enolase (rTsEnoA) is capable of specifically binding and activating human Plg...
February 18, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29465306/sex-dimorphism-in-the-distribution-of-adipose-tissue-and-its-influence-on-proinflammatory-adipokines-and-cardiometabolic-profiles-in-motor-complete-spinal-cord-injury
#6
Gary J Farkas, Ashraf S Gorgey, David R Dolbow, Arthur S Berg, David R Gater
OBJECTIVE: We aimed to examine the influence of sex on the distribution of adipose tissue, as well as proinflammatory adipokine and cardiometabolic profiles, in chronic motor complete spinal cord injury (SCI). DESIGN: Cross-sectional and correlational study. SETTING: Academic rehabilitation hospital. PARTICIPANTS: Forty-seven individuals with chronic motor complete SCI classified according to sex (males: age 44.0 ± 10...
February 21, 2018: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/29464140/a-case-report-of-recombinant-tissue-plasminogen-activator-use-in-a-span-100-positive-geriatric-patient-with-thrombocytopenia
#7
Ilya Bragin, Justine M Chen
Thrombocytopenia (platelet count: < 100,000/mm3 ) is considered a contraindication in the use of intravenous thrombolysis for acute ischemic stroke. Little literature exists regarding tissue plasminogen activator (tPA) usage in thrombocytopenic patients, especially in older patients. Age and stroke severity are major prognostic indicators of the risk of hemorrhagic transformation. The Stroke Prognostication using Age and NIH Stroke Scale (SPAN) index estimates a patient's risk of intracerebral hemorrhage (ICH) and clinical response to thrombolysis by combining age in years with the National Institutes of Health Stroke Scale (NIHSS) scores...
December 11, 2017: Curēus
https://www.readbyqxmd.com/read/29455395/anti-cancer-effect-of-aquaporin-5-silencing-in-colorectal-cancer-cells-in-association-with-inhibition-of-wnt-%C3%AE-catenin-pathway
#8
Wei Wang, Qing Li, Tao Yang, Dongsheng Li, Feng Ding, Hongzhi Sun, Guang Bai
Aquaporin 5 (AQP5) is a water channel protein that is over-expressed in many tumors. Elevated expression of AQP5 is associated with poor prognosis of colorectal cancer. Yet, whether AQP5 plays a role in epithelial-mesenchymal transition (EMT) of colorectal cancer has not been reported until now. Here we aim to investigate the function of AQP5 in the EMT process of colorectal cancer. We transfected HCT116 and SW480 cells with AQP5-specific shRNA and verified the knockdown efficiency through western blotting and real-time PCR...
February 17, 2018: Cytotechnology
https://www.readbyqxmd.com/read/29454747/plasminogen-activator-inhibitor-1-reduces-tpa-dependent-fibrinolysis-and-intrahepatic-hemorrhage-in-experimental-acetaminophen-overdose
#9
Asmita Pant, Anna K Kopeć, Kevin S Baker, Holly Cline-Fedewa, Daniel A Lawrence, James P Luyendyk
Acetaminophen (APAP)-induced liver injury in mice is associated with activation of the coagulation cascade and deposition of fibrin in liver. Plasminogen activator inhibitor-1 (PAI-1) is an important physiological inhibitor of tissue-type plasminogen activator (tPA) and plays a critical role in fibrinolysis. PAI-1 expression is increased in both experimental APAP-induced liver injury and patients with acute liver failure. Prior studies have shown that PAI-1 prevents intrahepatic hemorrhage and mortality after APAP challenge, but the downstream mechanisms are not clear...
February 15, 2018: American Journal of Pathology
https://www.readbyqxmd.com/read/29450213/differential-regulation-of-pai-1-in-hantavirus-cardiopulmonary-syndrome-and-hemorrhagic-fever-with-renal-syndrome
#10
Carla Bellomo, Miša Korva, Anna Papa, Satu Mäkelä, Jukka Mustonen, Tatjana Avšič-Županc, Antti Vaheri, Valeria P Martinez, Tomas Strandin
We analyzed the levels of circulating tissue plasminogen activator (tPA) and plasminogen activator inhibitor (PAI)-1 in acute hantavirus cardiopulmonary syndrome (HCPS) and hemorrhagic fever with renal syndrome (HFRS). The levels of tPA commonly increased in both diseases, whereas PAI-1 correlated with disease severity in HCPS but not in HFRS.
February 2018: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/29450197/platelet-counts-in-insoluble-platelet-rich-fibrin-clots-a-direct-method-for-accurate-determination
#11
Yutaka Kitamura, Taisuke Watanabe, Masayuki Nakamura, Kazushige Isobe, Hideo Kawabata, Kohya Uematsu, Kazuhiro Okuda, Koh Nakata, Takaaki Tanaka, Tomoyuki Kawase
Platelet-rich fibrin (PRF) clots have been used in regenerative dentistry most often, with the assumption that growth factor levels are concentrated in proportion to the platelet concentration. Platelet counts in PRF are generally determined indirectly by platelet counting in other liquid fractions. This study shows a method for direct estimation of platelet counts in PRF. To validate this method by determination of the recovery rate, whole-blood samples were obtained with an anticoagulant from healthy donors, and platelet-rich plasma (PRP) fractions were clotted with CaCl 2 by centrifugation and digested with tissue-plasminogen activator...
2018: Frontiers in Bioengineering and Biotechnology
https://www.readbyqxmd.com/read/29450147/lemongrass-cymbopogon-flexuosus-essential-oil-demonstrated-anti-inflammatory-effect-in-pre-inflamed-human-dermal-fibroblasts
#12
Xuesheng Han, Tory L Parker
Lemongrass ( Cymbopogon flexuosus ) essential oil (LEO), which has citral as its main component, has exhibited anti-inflammatory effect in both animal and human cells. In this study, we evaluated the anti-inflammatory activity of a commercially available LEO in pre-inflamed human dermal fibroblasts. We first studied the impact of LEO on 17 protein biomarkers that are critically associated with inflammation and tissue remodeling. LEO significantly inhibited production of the inflammatory biomarkers vascular cell adhesion molecule 1 (VCAM-1), interferon gamma-induced protein 10 (IP-10), interferon-inducible T-cell alpha chemoattractant (I-TAC), and monokine induced by gamma interferon (MIG); decreased levels of the tissue remodeling biomarkers collagen-I and III, epidermal growth factor receptor (EGFR), and plasminogen activator inhibitor (PAI-1); and inhibited the immunomodulatory biomarker macrophage colony-stimulating factor (M-CSF)...
June 2017: Biochimie Open
https://www.readbyqxmd.com/read/29450144/anti-inflammatory-tissue-remodeling-immunomodulatory-and-anticancer-activities-of-oregano-origanum-vulgare-essential-oil-in-a-human-skin-disease-model
#13
Xuesheng Han, Tory L Parker
The use of oregano ( Origanum vulgare ) essential oil (OEO) has become popular in skin care products. However, scientific research regarding its effects on human skin cells is scarce. In this study, we investigated the biological activity of a commercially available OEO, which is high in carvacrol content, in a human skin cell disease model. OEO induced marked antiproliferative effects and significantly inhibited several inflammatory biomarkers, including monocyte chemoattractant protein 1 (MCP-1), vascular cell adhesion molecule 1 (VCAM-1), intracellular cell adhesion molecule 1 (ICAM-1), interferon gamma-induced protein 10 (IP-10), interferon-inducible T-cell alpha chemoattractant (I-TAC), and monokine induced by gamma interferon (MIG)...
June 2017: Biochimie Open
https://www.readbyqxmd.com/read/29450142/arborvitae-thuja-plicata-essential-oil-significantly-inhibited-critical-inflammation-and-tissue-remodeling-related-proteins-and-genes-in-human-dermal-fibroblasts
#14
Xuesheng Han, Tory L Parker
Arborvitae ( Thuja plicata ) essential oil (AEO) is becoming increasingly popular in skincare, although its biological activity in human skin cells has not been investigated. Therefore, we sought to study AEO's effect on 17 important protein biomarkers that are closely related to inflammation and tissue remodeling by using a pre-inflamed human dermal fibroblast culture model. AEO significantly inhibited the expression of vascular cell adhesion molecule 1 (VCAM-1), intracellular cell adhesion molecule 1 (ICAM-1), interferon gamma-induced protein 10 (IP-10), interferon-inducible T-cell chemoattractant (I-TAC), monokine induced by interferon gamma (MIG), and macrophage colony-stimulating factor (M-CSF)...
June 2017: Biochimie Open
https://www.readbyqxmd.com/read/29449886/off-label-use-of-iv-t-pa-in-patients-with-intracranial-neoplasm-and-cavernoma
#15
Christopher Jan Schwarzbach, Anne Ebert, Michael G Hennerici, Eva Neumaier-Probst, Michael Platten, Marc Fatar
Background: The safety of systemic thrombolysis in patients with intracranial tumor and cavernoma are unknown. So far evidence is limited to a number of case reports and few case series or unspecified data based on population-based analysis. Our aim was to comprehend the risk of systemic thrombolysis in these patients. Methods: Patients with additional evidence of intracranial tumor or cavernoma who received IV tissue plasminogen activator (t-PA) treatment at our comprehensive stroke center over a period of 7 years were identified in our stroke database and compared to the same number of matched control subjects without any evidence of intracranial tumor and cavernoma...
2018: Therapeutic Advances in Neurological Disorders
https://www.readbyqxmd.com/read/29445435/investigation-of-gender-differences-and-exclusive-criteria-in-a-diabetic-acute-ischemic-stroke-population-treated-with-recombinant-tissue-type-plasminogen-activator-rtpa
#16
Taylor Wapshott, Brice Blum, Williams Kelsey, Thomas I Nathaniel
Background: Many studies have reported that women who survive stroke have less favorable outcomes than men in the use of rtPA, while others reported worse outcomes in men than women. The gender difference in the exclusion criteria in a diabetic stroke population is not fully understood. This issue was investigated in this study. Method: In a diabetic stroke population from a stroke registry of data collected between January 2010 to June 30, 2016, the gender difference was determined using demographics and clinical factors...
December 2017: Journal of Vascular and Interventional Neurology
https://www.readbyqxmd.com/read/29444972/usefulness-of-adamts13-to-predict-response-to-recanalization-therapies-in-acute-ischemic-stroke
#17
Alejandro Bustamante, MingMing Ning, Teresa García-Berrocoso, Anna Penalba, Cristina Boada, Alba Simats, Jorge Pagola, Marc Ribó, Carlos Molina, Eng Lo, Joan Montaner
OBJECTIVE: We aimed to analyze ADAMTS13 (a disintegrin and metalloproteinase with a thrombospondin type 1 motif, member 13) in relation to arterial recanalization in patients treated with IV tissue plasminogen activator (tPA) and in relation to futile recanalization in patients treated with mechanical thrombectomy. METHODS: Acute ischemic stroke patients (n = 108) with documented arterial occlusions treated with IV-tPA were selected. ADAMTS13 activity was measured by ELISA in samples collected before treatment...
February 14, 2018: Neurology
https://www.readbyqxmd.com/read/29440586/national-practice-patterns-of-obtaining-informed-consent-for-stroke-thrombolysis
#18
Scott J Mendelson, D Mark Courtney, Elisa J Gordon, Leena F Thomas, Jane L Holl, Shyam Prabhakaran
BACKGROUND AND PURPOSE: No standard approach to obtaining informed consent for stroke thrombolysis with tPA (tissue-type plasminogen activator) currently exists. We aimed to assess current nationwide practice patterns of obtaining informed consent for tPA. METHODS: An online survey was developed and distributed by e-mail to clinicians involved in acute stroke care. Multivariable logistic regression analyses were performed to determine independent factors contributing to always obtaining informed consent for tPA...
February 12, 2018: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/29439245/downregulation-of-spink13-promotes-metastasis-by-regulating-upa-in-ovarian-cancer-cells
#19
Shengyun Cai, Pei Zhang, Suhe Dong, Li Li, Jianming Cai, Mingjuan Xu
BACKGROUND/AIMS: Ovarian cancer (OC) is the fifth leading cause of cancer-related death in women, and it is difficult to diagnose at an early stage. The purpose of this study was to explore the prognostic biological markers of OC. METHODS: Univariate Cox regression analysis was used to identify genes related to OC prognosis from the Cancer Genome Atlas(TCGA) database. Immunohistochemistry was used to analyse the level of SPINK13 in OC and normal tissues. Cell proliferation, apoptosis and invasion were performed using MTT assay, flow cytometric analysis and Transwell assay, respectively...
February 7, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29438080/thrombus-neutrophil-extracellular-traps-content-impair-tpa-induced-thrombolysis-in-acute-ischemic-stroke
#20
Celina Ducroux, Lucas Di Meglio, Stephane Loyau, Sandrine Delbosc, William Boisseau, Catherine Deschildre, Malek Ben Maacha, Raphael Blanc, Hocine Redjem, Gabriele Ciccio, Stanislas Smajda, Robert Fahed, Jean-Baptiste Michel, Michel Piotin, Laurence Salomon, Mikael Mazighi, Benoit Ho-Tin-Noe, Jean-Philippe Desilles
BACKGROUND AND PURPOSE: Neutrophil Extracellular Traps (NETs) are DNA extracellular networks decorated with histones and granular proteins produced by activated neutrophils. NETs have been identified as major triggers and structural factors of thrombosis. A recent study designated extracellular DNA threads from NETs as a potential therapeutic target for improving tissue-type plasminogen activator (tPA)-induced thrombolysis in acute coronary syndrome. The aim of this study was to assess the presence of NETs in thrombi retrieved during endovascular therapy in patients with acute ischemic stroke (AIS) and their impact on tPA-induced thrombolysis...
February 8, 2018: Stroke; a Journal of Cerebral Circulation
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