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thrombotic occlusion

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https://www.readbyqxmd.com/read/28801815/plasma-levels-of-complement-activation-fragments-c3b-and-sc5b-9-significantly-increased-in-patients-with-thrombotic-microangiopathy-after-allogeneic-stem-cell-transplantation
#1
Jiaqian Qi, Jie Wang, Jia Chen, Jian Su, Yaqiong Tang, Xiaojin Wu, Xiao Ma, Feng Chen, Changgeng Ruan, X Long Zheng, Depei Wu, Yue Han
Transplantation-associated thrombotic microangiopathy (TA-TMA) is an uncommon but severe complication in patients undergoing allogeneic stem cell transplantation (allo-SCT). However, the mechanism is unclear. From 2011 to 2014, 20 patients with TA-TMA, 20 patients without, and 54 patients with various other complications, including veno occlusive disease (VOD), graft-versus-host disease (GVHD), and infection, were recruited in the study. Plasma vWF antigen (vWFAg), vWF activity (vWFAc), and ADAMTS13 activity were determined in these patients by ELISAs and FRETS-vWF73 assay, respectively...
August 11, 2017: Annals of Hematology
https://www.readbyqxmd.com/read/28801136/outcomes-of-pharmacomechanical-catheter-directed-thrombolysis-for-acute-and-subacute-inferior-vena-cava-thrombosis-a-retrospective-evaluation-in-a-single-institution
#2
K Ye, J Qin, M Yin, X Liu, X Lu
OBJECTIVE/BACKGROUND: The objective was to assess the mid-term results of pharmacomechanical catheter-directed thrombolysis (PCDT) for symptomatic acute and subacute inferior vena cava (IVC) thrombosis; the risk factors of early thrombosis recurrence and iliocaval patency were also evaluated. METHODS: From January 2010 to December 2015, 54 patients (33 men; mean age 47.1 years) with symptomatic acute and subacute IVC thrombosis were treated with PCDT. Primary technical success (clot lysis ≥ 50% after PCDT), stent-assisted technical success (residual stenosis < 30% after stenting), clinical success (freedom from thrombosis recurrence within 30 days), complications, frequency of post-thrombotic syndrome (PTS; Villalta score ≥ 5), and iliocaval patency were recorded at follow-up evaluation...
August 8, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28796818/hypercholesterolemia-induced-cerebral-small-vessel-disease
#3
Peter Kraft, Michael K Schuhmann, Cornelia Garz, Solveig Jandke, Daniela Urlaub, Stine Mencl, Alma Zernecke, Hans-Jochen Heinze, Roxana O Carare, Christoph Kleinschnitz, Stefanie Schreiber
BACKGROUND: While hypercholesterolemia plays a causative role for the development of ischemic stroke in large vessels, its significance for cerebral small vessel disease (CSVD) remains unclear. We thus aimed to understand the detailed relationship between hypercholesterolemia and CSVD using the well described Ldlr-/- mouse model. METHODS: We used Ldlr-/- mice (n = 16) and wild-type (WT) mice (n = 15) at the age of 6 and 12 months. Ldlr-/- mice develop high plasma cholesterol levels following a high fat diet...
2017: PloS One
https://www.readbyqxmd.com/read/28795613/the-inability-of-venous-occlusion-air-plethysmography-to-identify-patients-who-will-benefit-from-stenting-of-deep-venous-obstruction
#4
Ralph Lm Kurstjens, Fabio S Catarinella, Yee Lai Lam, Mark Af de Wolf, Irwin M Toonder, Cees Ha Wittens
Background The aim of this study was to assess whether venous occlusion plethysmography can be used to identify venous obstruction and predict clinical success of stenting. Method Receiver operated characteristic curves were used to determine the ability of venous occlusion plethysmography to discriminate between the presence and absence of obstruction, measured by duplex ultrasound and magnetic resonance venography, and to discriminate between successful and non-successful stenting, measured by VEINES-QOL/Sym...
January 1, 2017: Phlebology
https://www.readbyqxmd.com/read/28791184/acute-myocardial-infarction-caused-by-an-anomalous-right-coronary-artery-occlusion-presenting-with-precordial-st-elevation
#5
Bruno da Silva Matte, Alexandre Damiani Azmus
Acute coronary syndrome with precordial ST segment elevation is usually related to left anterior descending artery occlusion, although isolated right ventricular infarction has been described as a cause of ST elevation in V1-V3 leads. We present a case of a patient with previous inferior wall infarction and new acute ST elevation myocardial infarction (STEMI) due to proximal right coronary thrombotic occlusion resulting in right ventricular infarction with precordial ST elevation and sinus node dysfunction...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/28774729/-thrombotic-microangiopathy-and-cancer
#6
Rania Kheder El-Fekih, Clément Deltombe, Hassan Izzedine
Thrombotic microangiopathy (TMA) is a group of disorders characterized by mechanical hemolytic anemia with thrombocytopenia and an ischemic organic lesion of variable and potentially fatal importance affecting mostly the kidneys and the brain with histologically a disseminated and occlusive microvasculopathy. The incidence of TMA represents 15% of acute kidney failure in oncological setting, largely due to the introduction of anti-angiogenic agents over the past decade. It may be more rarely related to cancer itself...
July 31, 2017: Néphrologie & Thérapeutique
https://www.readbyqxmd.com/read/28761412/immunomodulators-and-micrornas-as-neurorestorative-therapy-for-ischemic-stroke
#7
REVIEW
Bridget Martinez, Philip V Peplow
Most of all strokes are ischemic due to occlusion of a vessel, and comprise two main types, thrombotic and embolic. Inflammation and immune response play an important role in the outcome of ischemic stroke. Pharmaceutical and cell-based therapies with immunomodulatory properties could be of benefit in treating ischemic stroke. Possible changes in microRNAs brought about by immunomodulatory treatments may be important. The pharmaceutical studies described in this review have identified several differentially regulated miRNAs associated with disregulation of mRNA targets or the upregulation of several neuroprotective genes, thereby highlighting the potential neuroprotective roles of specific miRNAs such as miR-762, -1892, -200a, -145...
June 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/28745659/-current-approach-and-the-role-of-laser-photocoagulation-in-the-treatment-of-retinal-vein-occlusions
#8
S V Sdobnikova, K A Mirzabekova, V K Surguch
Despite the emergence of new approaches in the treatment of retinal vein thrombosis and post-thrombotic complications, namely, intravitreal pharmacotherapy and surgical treatment, laser photocoagulation continues to play a significant role in the management of patients with this pathology. Although the method of laser photocoagulation has been used for quite a long time, different views exist on its indications and execution in specific clinical situations. At that, not all opinions regarding the use of laser photocoagulation in thrombosis are based on convincing clinical studies...
2017: Vestnik Oftalmologii
https://www.readbyqxmd.com/read/28739563/efficacy-of-new-low-dose-oral-anticoagulants-in-recalcitrant-livedoid-vasculopathy
#9
Fumina Furukawa, Megumi Mizawa, Teruhiko Makino, Tadamichi Shimizu
Livedoid vasculopathy (LV) is a thrombotic skin disease characterised by recurrent painful ulcerations and irreversible scar formation on the lower legs, which is caused by occlusion of the cutaneous microcirculation. Edoxaban is one of new oral anticoagulants. It directly inhibits factor Xa in the coagulation pathway and prevents thrombus formation. A 17-year-old Japanese male presented with a 1-year history of recalcitrant cutaneous ulcers and livedo racemosa on his lower extremities. Initially, the ulcers were treated with antiplatelets therapies; however, he experienced recurrence of ulcerations during summer time...
July 24, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28730909/dramatic-response-of-acute-disseminated-intravascular-coagulation-to-erlotinib-in-a-patient-with-lung-adenocarcinoma-with-activating-egfr-mutation
#10
Jung Soo Kim, Jeong-Seon Ryu, Sang Hoon Jeon, Hyun-Jung Kim, Hae-Seong Nam, Jae Hwa Cho, Seung Min Kwak, Hong Lyeol Lee
Disseminated intravascular coagulation (DIC) is a commonly encountered clinical situation characterized by thrombotic occlusion or bleeding in patients with lung cancer. DIC in patients with cancer is usually asymptomatic, taking a chronic form as a compensatory mechanism. Although acute DIC in patients with lung cancer is rarely reported, it can be fatal. We herein describe a patient with lung adenocarcinoma with an activating mutation of the epidermal growth factor receptor (EGFR) gene who developed acute DIC after minor surgical excision...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28729903/tranexamic-acid-and-trauma-induced-coagulopathy
#11
REVIEW
Takeshi Nishida, Takahiro Kinoshita, Kazuma Yamakawa
Tranexamic acid (TXA) is a synthetic derivative of the amino acid lysine that inhibits fibrinolysis by blocking the interaction of plasminogen with the lysine residues of fibrin. Historically, TXA is commonly used for reduction of blood loss in perioperative situations, while recently it has attracted attention for clinical use in the trauma field. In 2010, the Clinical Randomization of an Antifibrinolytic in Significant Hemorrhage 2 (CRASH-2) trial demonstrated that intravenous administration of TXA improved mortality significantly in trauma patients with significant bleeding...
2017: Journal of Intensive Care
https://www.readbyqxmd.com/read/28725968/microglial-mediated-pdgf-cc-activation-increases-cerebrovascular-permeability-during-ischemic-stroke
#12
Enming Joseph Su, Chunzhang Cao, Linda Fredriksson, Ingrid Nilsson, Christina Stefanitsch, Tamara K Stevenson, Juanjuan Zhao, Margret Ragsdale, Yu-Yo Sun, Manuel Yepes, Chia-Yi Kuan, Ulf Eriksson, Dudley K Strickland, Daniel A Lawrence, Li Zhang
Treatment of acute ischemic stroke with the thrombolytic tissue plasminogen activator (tPA) can significantly improve neurological outcomes; however, thrombolytic therapy is associated with an increased risk of intra-cerebral hemorrhage (ICH). Previously, we demonstrated that during stroke tPA acting on the parenchymal side of the neurovascular unit (NVU) can increase blood-brain barrier (BBB) permeability and ICH through activation of latent platelet-derived growth factor-CC (PDGF-CC) and signaling by the PDGF receptor-α (PDGFRα)...
July 19, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28712194/blocked-coronary-artery-due-to-coronary-spasm-treated-with-stent-insertion-a-sub-optimal-result
#13
Habib Rehman Khan, Sajid Aslam
Myocardial infarction (MI) is an extremely common cause of chest pain. MI can be acute with ST elevation (STEMI) or non-STEMI (NSTEMI). Coronary artery spasm can be severe enough to cause occlusion of the coronary arteries particularly with an exaggerated response in regions of coronary atheroma and plaque ulceration. It is not uncommon for coronary spasm to be mistaken with acute thrombotic occlusion of the coronary artery. We describe a case of a 42-year old man with known cardiac risk factors presents with chest pain for few hours to a tertiary centre hospital...
January 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28706202/near-infrared-autofluorescence-induced-by-intraplaque-hemorrhage-and-heme-degradation-as-marker-for-high-risk-atherosclerotic-plaques
#14
Nay Min Htun, Yung Chih Chen, Bock Lim, Tara Schiller, Ghassan J Maghzal, Alex L Huang, Kirstin D Elgass, Jennifer Rivera, Hans G Schneider, Bayden R Wood, Roland Stocker, Karlheinz Peter
Atherosclerosis is a major cause of mortality and morbidity, which is mainly driven by complications such as myocardial infarction and stroke. These complications are caused by thrombotic arterial occlusion localized at the site of high-risk atherosclerotic plaques, of which early detection and therapeutic stabilization are urgently needed. Here we show that near-infrared autofluorescence is associated with the presence of intraplaque hemorrhage and heme degradation products, particularly bilirubin by using our recently created mouse model, which uniquely reflects plaque instability as seen in humans, and human carotid endarterectomy samples...
July 13, 2017: Nature Communications
https://www.readbyqxmd.com/read/28689397/invention-of-the-guide-catheter-irrigation-monitoring-device-for-neuroendovascular-therapy
#15
Ayca Ozkul, Jong-Hyun Park, Dong-Seung Shin, Ali Yilmaz, Bum-Tae Kim
OBJECTIVE: The thromboembolic events during neuroendovascular therapy (NET) are the major complications of concern that can be occasionally fatal. The thrombotic occlusion of the guide catheter for NET is thought to be the risk of the thromboembolic events. We have developed an idea for inventing the monitoring system of the continuous irrigation through the guide catheter. We herein present a unique invention of the guide catheter irrigation monitoring device. METHODS: We have developed ideas for preventing the thrombotic occlusion of the guide catheter...
July 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/28674685/risk-factors-prophylaxis-and-treatment-of-venous-thromboembolism-in-congenital-heart-disease-patients
#16
REVIEW
Michael Silvey, Leonardo R Brandão
Congenital heart disease (CHD) is a common condition in the pediatric population, affecting up to 1% of all live births (i.e., around 40,000 newborns/year in the United States). Although CHD does have a wide range of severity, by the age of 5 years approximately 80% of patients will require at least one surgical intervention to achieve a complete/palliative cardiac repair. Today, in light of their much-improved surgical survival, the care of these patients focuses on morbidity prevention and/or treatment...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28673898/platelet-derived-factor-v-is-a-critical-mediator-of-arterial-thrombosis
#17
Meiping Ren, Rong Li, Ni Chen, Ningbo Pang, Yongjie Li, Xin Deng, Liqun Wang, Mao Luo, Yan Liu, Haiyan Hao, Yong Liu, Hongmin Sun, Jianbo Wu
BACKGROUND: Coagulation factor V (FV) plays a key role in hemostasis, is present in plasma and platelets, and has both pro- and anticoagulant properties; however, the contribution of platelet-derived FV to arterial thrombosis remains undetermined. METHODS AND RESULTS: Using transgenic mice with various levels of FV gene expression that was restricted to the plasma or platelets, the roles of platelet FV were evaluated in the regulation of arterial thrombosis and platelet activation...
July 3, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28667041/placental-fetal-thrombotic-vasculopathy-occurring-in-association-with-megacystis-microcolon-intestinal-hypoperistalsis-syndrome-a-case-report
#18
Anneliese Vélez-Pérez, Pamela Younes, Nina Tatevian
Megacystis-microcolon-intestinal hypoperistalsis syndrome (MMIHS) is a rare disease of functional obstruction affecting the bladder and intestines, characterized by a markedly distended bladder, microcolon, and decreased or absent intestinal peristalsis. Afflicted neonates have very poor prognosis, usually with fatal outcomes in first days to months of life. Placental fetal thrombotic vasculopathy (FTV) is a thrombo-occlusive disorder of the chorionic plate and fetal circulation. Herein, we describe an undocumented association of MMIHS and placental FTV...
May 2017: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/28644135/evaluation-of-thromboelastometry-parameters-as-predictive-markers-for-sinusoidal-obstruction-syndrome-in-patients-undergoing-allogeneic-stem-cell-transplantation-for-acute-leukaemia
#19
Joanna Rupa-Matysek, Lidia Gil, Ewelina Wojtasińska, Zuzanna Kanduła, Adam Nowicki, Magdalena Matuszak, Mieczysław Komarnicki
Hepatic sinusoidal obstruction syndrome (previously named veno-occlusive disease, SOS/VOD) is a serious complication of allogeneic stem cell transplantation (HSCT). Early identification of patients at risk of SOS/VOD may possibly improve the outcome and reduce mortality. Rotation thromboelastometry (ROTEM) is global assay allowing for the precise assessment of both bleeding and thrombotic conditions, however, its usefulness in patients undergoing HSCT for acute leukaemia has not been studied.We evaluated the thromboelastometry parameters in patients undergoing allogeneic HSCT for acute leukaemia to identify candidate biomarkers of SOS/VOD occurrence...
June 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28642065/severe-and-resistant-hypertension-in-an-older-woman-with-claudication
#20
Puneet Gupta, Robert Hagberg, Electra Kaloudis, Anika Lucas, Parth Shah, William B White
Coarctation of the aorta is an uncommon cause of treatment-resistant hypertension in adults. It is typically detected and treated in infancy or childhood with surgical or endovascular procedures. Most cases of recurrence of coarctation after repair occur in childhood or early adulthood; recurrence in older persons (>70 years) has rarely been reported. A 73-year-old woman was referred to us for the management of treatment-resistant hypertension accompanied by symptoms of claudication and headaches, which had resulted in multiple emergency room visits...
August 2017: Journal of the American Society of Hypertension: JASH
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