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https://www.readbyqxmd.com/read/28650086/systemic-thrombolysis-catheter-directed-thrombolysis-and-anticoagulation-for-intermediate-risk-pulmonary-embolism-a-simulation-modeling-analysis
#1
Christopher Kabrhel, Ayman Ali, Jin Choi, Chin Hur
OBJECTIVES: Decision-making around the use of thrombolysis for patients with intermediate-risk (submassive) PE remains challenging. Studies indicate favorable clinical outcomes with systemic thrombolytics (IV tPA), but the risk of major bleeding and hemorrhagic stroke is a deterrent. Catheter-directed thrombolysis (CDT) may be a preferable strategy, as it has been shown to have a lower risk of bleeding than systemic thrombolysis. However, a three-arm randomized control study comparing IV tPA, CDT, and anticoagulation alone, with long-term follow up, would be costly and is unlikely to be performed...
June 26, 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/28646887/intrapleural-dornase-and-tissue-plasminogen-activator-in-pediatric-empyema-dtpa-a-study-protocol-for-a-randomized-controlled-trial
#2
Michael H Livingston, Sanjay Mahant, Felix Ratjen, Bairbre L Connolly, Kevin Thorpe, Muhammad Mamdani, Ian Maclusky, Sophie Laberge, Lucy Giglia, J Mark Walton, Connie L Yang, Ashley Roberts, Anna C Shawyer, Mary Brindle, Simon J Parsons, Cristina A Stoian, Eyal Cohen
BACKGROUND: A randomized controlled trial of adults with empyema recently demonstrated decreased length of stay in hospital in patients treated with intrapleurally administered dornase alfa and fibrinolytics compared to fibrinolytics alone. Whether this treatment strategy is safe and effective in children remains unknown. METHODS/DESIGN: This study protocol is for a superiority, placebo-controlled, parallel-design, multicenter randomized controlled trial. The participants are previously well children admitted to a children's hospital with a diagnosis of empyema requiring chest tube insertion and fibrinolytics administered intrapleurally...
June 24, 2017: Trials
https://www.readbyqxmd.com/read/28646558/neurology-concepts-young-women-and-ischemic-stroke-evaluation-and-management-in-the-emergency-department
#3
Bernard P Chang, Charles Wira, Joseph Miller, Murtaza Akhter, Bradley E Barth, Joshua Willey, Lauren Nentwich, Tracy Madsen
OBJECTIVE: Ischemic stroke is a leading cause of morbidity and mortality worldwide. While the incidence of ischemic stroke is highest in older populations, incidence of ischemic stroke in adults has been rising particularly rapidly among young (e.g. premenopausal) women. The evaluation and timely diagnosis of ischemic stroke in young women presents a challenging situation in the emergency department, due to a range of sex-specific risk factors and to broad differentials. The goals of this concepts paper are to summarize existing knowledge regarding the evaluation and management of young women with ischemic stroke in the acute setting...
June 24, 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/28646445/update-on-neurocritical-care-of-stroke
#4
Jason Siegel, Michael A Pizzi, J Brent Peel, David Alejos, Nnenne Mbabuike, Benjamin L Brown, David Hodge, W David Freeman
PURPOSE OF REVIEW: This review will highlight the recent advancements in acute ischemic stroke diagnosis and treatment, with special attention to new features and recommendations of stroke care in the neurocritical care unit. RECENT FINDINGS: New studies suggest that pre-hospital treatment of stroke with mobile stroke units and telestroke technology may lead to earlier stroke therapy with intravenous tissue plasminogen activator (tPA), and recent studies show tPA can be given in previously contraindicated situations...
August 2017: Current Cardiology Reports
https://www.readbyqxmd.com/read/28644924/intravenous-thrombolysis-for-acute-ischemic-stroke-a-bridge-between-two-centuries
#5
Georgios Tsivgoulis, Odysseas Kargiotis, Andrei Alexandrov
Intravenous tissue-plasminogen activator (tPA) remains the only approved systemic reperfusion therapy suitable for most patients presenting timely with acute ischemic stroke. Accumulating real-word experience for over 20 years regarding tPA safety and effectiveness lead to re-appraisal of original contraindications for intravenous thrombolysis (IVT). Areas covered: This narrative review focuses on fast yet appropriate selection of patients for safe administration of tPA per recently expanded indications. Novel strategies for rapid patient assessment will be discussed...
June 23, 2017: Expert Review of Neurotherapeutics
https://www.readbyqxmd.com/read/28644439/activation-of-cell-surface-grp78-decreases-endoplasmic-reticulum-stress-and-neuronal-death
#6
Morgane Louessard, Isabelle Bardou, Eloïse Lemarchand, Audrey M Thiebaut, Jérôme Parcq, Jérôme Leprince, Anne Terrisse, Valérie Carraro, Pierre Fafournoux, Alain Bruhat, Cyrille Orset, Denis Vivien, Carine Ali, Benoit D Roussel
The unfolded protein response (UPR) is an endoplasmic reticulum (ER) -related stress conserved pathway that aims to protect cells from being overwhelmed. However, when prolonged, UPR activation converts to a death signal, which relies on its PERK-eIF2α branch. Overactivation of the UPR has been implicated in many neurological diseases, including cerebral ischaemia. Here, by using an in vivo thromboembolic model of stroke on transgenic ER stress-reporter mice and neuronal in vitro models of ischaemia, we demonstrate that ischaemic stress leads to the deleterious activation of the PERK branch of the UPR...
June 23, 2017: Cell Death and Differentiation
https://www.readbyqxmd.com/read/28643713/tissue-plasminogen-activator-assisted-vitrectomy-for-submacular-hemorrhage-due-to-age-related-macular-degeneration
#7
Mustafa Gok, V Levent Karabaş, Mehmet S Aslan, Özgür Kara, Süleyman Karaman, Fatih Yenihayat
PURPOSE: The purpose of this study was to evaluate the treatment efficacy of vitrectomy combined with subretinal recombinant tissue plasminogen activator (r-tPA) and factors affecting visual improvement in patients with submacular hemorrhage (SMH) due to neovascular age-related macular degeneration (nAMD). MATERIALS AND METHODS: Medical records of 17 consecutive patients diagnosed with SMH secondary to nAMD were retrospectively reviewed. The initial surgical procedure involved a 23-gauge transconjunctival vitrectomy, subretinal r-tPA application through a self-sealing inferior retinotomy, and sulfur hexafluoride gas for tamponade in all patients...
June 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28637470/promoting-physical-activity-among-adolescent-girls-the-girls-in-sport-group-randomized-trial
#8
Anthony D Okely, David R Lubans, Philip J Morgan, Wayne Cotton, Louisa Peralta, Judith Miller, Marijka Batterham, Xanne Janssen
BACKGROUND: Slowing the decline in participation in physical activity among adolescent girls is a public health priority. This study reports the outcomes from a multi-component school-based intervention (Girls in Sport), focused on promoting physical activity among adolescent girls. METHODS: Group randomized controlled trial in 24 secondary schools (12 intervention and 12 control). Assessments were conducted at baseline (2009) and at 18 months post-baseline (2010)...
June 21, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/28633085/biotechnological-production-of-recombinant-tissue-plasminogen-activator-protein-reteplase-from-transplastomic-tobacco-cell-cultures
#9
Diego Hidalgo, Maryam Abdoli-Nasab, Mokhtar Jalali-Javaran, Roque Bru-Martínez, Rosa M Cusidó, Purificación Corchete, Javier Palazon
Transplastomic plants are a system of choice for the mass production of biopharmaceuticals due to the polyploidy of the plastid genome and the low risk of pollen-mediated outcrossing because of maternal inheritance. However, as field-grown plants, they can suffer contamination by agrochemicals and fertilizers, as well as fluctuations in yield due to climatic changes and infections. Tissue-type plasminogen activator (tPA), a protein used to treat heart attacks, converts plasminogen into plasmine, which digests fibrin and induces the dissolution of fibrin clots...
June 13, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28631902/-comparative-estimation-of-antilithogenic-activity-of-porcine-kidney-derived-biomedical-substance-and-sodium-citrate-in-experimental-urolithiasis
#10
G V Pavlyashik, A Yu Zharikov, V I Kiselev
AIM: to compare the anti-lithogenic activity of biomedical substance derived from freeze-dried porcine kidney and sodium citrate. MATERIALS AND METHODS: The experiments were conducted on Wistar rats divided into three groups of 15 animals each: control group (disease control), comparison group (sodium citrate treatment) and experimental group (treatment with biomedical substance from porcine kidneys). Experimental urolithiasis was modeled using the ethylene glycol model...
June 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/28629817/the-antinociceptive-effects-of-a-standardized-ethanol-extract-of-the-bidens-odorata-cav-asteraceae-leaves-are-mediated-by-atp-sensitive-k-channels
#11
Juan Ramón Zapata-Morales, Angel Josabad Alonso-Castro, Fabiola Domínguez, Candy Carranza-Álvarez, Mario Isiordia-Espinoza, Alejandro Hernández-Morales, Cesar Solorio-Alvarado
ETHNOPHARMACOLOGICAL RELEVANCE: Bidens odorata Cav (Asteraceae)is used for the empirical treatment of inflammation and pain. AIM OF THE STUDY: This work evaluatedthein vitro and in vivo toxicity, antioxidant activity, as well as the anti-inflammatory and antinociceptive effects of an ethanol extract from Bidens odorata leaves (BOE). MATERIALS AND METHODS: The in vitro toxicity of BOE (10-1000µg/ml) was evaluated with the comet assay in PBMC...
June 16, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28627542/gas-phase-vibrational-spectroscopy-of-triphenylamine-the-effect-of-charge-on-structure-and-spectra
#12
Musleh Uddin Munshi, Giel Berden, Jonathan Martens, Jos Oomens
The effect of ionization by oxidation and protonation on the structure and IR spectrum of isolated, gas-phase triphenylamine (TPA) has been investigated by infrared multiple photon dissociation (IRMPD) spectroscopy in the fingerprint range from 600 cm(-1) to 1800 cm(-1) using an infrared free electron laser. IR spectra calculated using density functional theory (DFT) convincingly reproduce the experimental data. Spectral and structural differences are identified among neutral TPA, TPA˙(+) and protonated TPA and qualitatively related to effects of resonance delocalization...
June 19, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28627326/triphenylamines-induce-cell-death-upon-2-photon-excitation
#13
Rahima Chennoufi, Florence Mahuteau-Betzer, Patrick Tauc, Marie-Paule Teulade-Fichou, Eric Deprez
Photodynamic therapy (PDT) is a promising therapeutic method for several diseases, in particular for cancer. This approach uses a photosensitizer, oxygen, and an external light source to produce reactive oxygen species (ROS) at lethal doses to induce cell death. One drawback of current PDT is the use of visible light which has poor penetration in tissues. Such a limitation could be overcome by the use of novel organic compounds compatible with photoactivation under near-infrared light excitation. Triphenylamines (TPAs) are highly fluorescent compounds that are efficient to induce cell death upon visible light excitation (458 nm), but outside the biological spectral window...
January 1, 2017: Molecular Imaging
https://www.readbyqxmd.com/read/28626569/importance-of-double-resonance-effects-in-two-photon-absorption-properties-of-au25-sr-18
#14
Zhongwei Hu, Lasse Jensen
The two-photon absorption (TPA) cross-sections of small thiolate-protected gold clusters have been shown to be much larger than typical small organic molecules. In comparison with larger nanoparticles, their TPA cross-sections per gold atom are also found to be larger. Theoretical simulations have suggested that the large enhancement of these TPA cross-sections comes from a one-photon double-resonance mechanism. However, it remains difficult to simulate TPA cross-sections of thiolate-protected gold clusters due to their large system size and a high density of states...
June 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/28614144/early-fibrinolysis-associated-with-hemorrhagic-progression-following-traumatic-brain-injury
#15
Jay Karri, Jessica C Cardenas, Nena Matijevic, Yao-Wei Wang, Sangbum Choi, Liang Zhu, Bryan A Cotton, Ryan Kitagawa, John B Holcomb, Charles E Wade
BACKGROUND: Progressive hemorrhagic injury (PHI) is common in patients with severe traumatic brain injury (TBI) and is associated with worse outcomes. PHI pathophysiology remains poorly understood and difficult to predict. We performed an exploratory analysis aimed at identify markers in need of further investigation to establish their predictive value in PHI following TBI. METHODS: We performed a retrospective chart review of prospectively collected data from 424 highest-level activation trauma patients from January 2012 through December 2013...
June 13, 2017: Shock
https://www.readbyqxmd.com/read/28612511/quantitative-estimation-of-ising-type-magnetic-anisotropy-in-a-family-of-c3-symmetric-coii-complexes
#16
Sanjit Konar, Amit Kumar Mondal, Jesús Jover, Eliseo Ruiz
In this paper, the influence of the structural and chemical effects on the Ising-type magnetic anisotropy of penta-coordinate CoII complexes has been investigated using a combined experimental and theoretical approach. For this, a deliberate design and synthesis of four penta-coordinate CoII complexes [Co(TPA)Cl]·ClO4 (1), [Co(TPA)Br]·ClO4 (2), [Co(tbta)Cl]·(ClO4)·(MeCN)2·(H2O) (3) and [Co(tbta)Br]·ClO4 (4) using the tripodal ligands tris(2-methylpyridyl)amine (TPA) and tris[(1-benzyl-1H-1,2,3-triazole-4-yl)methyl]amine) (tbta) have been carried out...
June 14, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28612076/improving-ruthenium-based-ecl-through-nonionic-surfactants-and-tertiary-amines
#17
Stefanie Kirschbaum-Harriman, Axel Duerkop, Antje J Baeumner
The influence of surfactants and coreactants on Ru(bpy)3(2+) electrogenerated chemiluminescence (ECL) was investigated comparatively. Specifically, the influence that the two tertiary amines, N-butyldiethanolamine (NBEA) and 2-(dibutylamino)ethanol (DBAE) have on the ECL reaction, alone and in the presence of the two surfactants Triton™ X-100 and Zonyl® FSN, was investigated, in comparison with that of the well-studied and established coreactant tripropylamine (TPA). Experiments were conducted on poly(methyl methacrylate) substrates coated with plasma-evaporated gold as used in many miniaturized systems...
June 14, 2017: Analyst
https://www.readbyqxmd.com/read/28610565/the-influence-of-dehydration-on-the-prognosis-of-acute-ischemic-stroke-for-patients-treated-with-tissue-plasminogen-activator
#18
Fei-Fan Wu, Yen-Chu Hung, Y H Tsai, Jen-Tsung Yang, Tsong-Hai Lee, Chia-Wei Liow, Jiann-Der Lee, Chung-Jen Lin, Tsung-I Peng, Leng-Chieh Lin
BACKGROUND: Many studies have determined that dehydration is an independent predictor of outcome after ischemic stroke (IS); however, none have determined if the use of thrombolytic therapy modifies the negative impact of poor hydration. To inform the stroke registry established at our institution, we conducted a retrospective study to determine if dehydration remains a negative prognostic factor after IS patients treated with tissue plasminogen activator (tPA). METHODS: Between 2007 and 2012, we recruited 382 subjects; 346 had data available and were divided into 2 groups on the basis of their blood urea nitrogen/creatinine (BUN/Cr) ratio...
June 13, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28605281/re-plasminogen-activator-inhibitor-1-and-pericardial-fat-in-individuals-with-type-2-diabetes-mellitus-by-bayomi-et-al-metab-syndr-relat-disord-doi-10-1089-met-2017-0031
#19
Angelo Avogaro
Plasminogen activator inhibitor-1 (PAI-1) is a member of the serine protease inhibitor (serpin) superfamily, which inactivates tissue plasminogen activator (tPA); therefore, increased level of PAI-1 antigen counteracts the anticoagulant effect of tPA and facilitates the fibrin clot formation. Plasma PAI-1 antigen and activity levels are associated with increased body mass index and with features of the insulin resistance syndrome like obesity and diabetes. Visceral adipose tissue produces more PAI-1 than subcutaneous adipose tissue: This increased production of PAI-1 from the visceral adipose tissue is one important link between visceral obesity and cardiovascular disease...
June 12, 2017: Metabolic Syndrome and related Disorders
https://www.readbyqxmd.com/read/28604570/successful-treatment-of-pediatric-ventricular-assist-device-thrombosis
#20
Devin Chetan, Holger Buchholz, Mary Bauman, Vijay Anand, Paula Holinski, Jennifer Conway
Pump thrombosis represents a significant cause of morbidity and mortality in patients on continuous flow ventricular assist devices (CF-VAD). Pump thrombosis in the pediatric CF-VAD population has been reported between 11% and 44%, with the largest reported series from the PediMACS registry reporting a rate of approximately 15%. We report our early experience with four pediatric patients who developed pump thrombosis on a CF-VAD. Our limited experience suggests that the treatment of pediatric VAD thrombosis can be approached with similar principles to the adult population...
June 7, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
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