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https://www.readbyqxmd.com/read/28454234/gemcitabine-associated-thrombotic-microangiopathy-in-a-patient-with-lung-cancer-a-case-report
#1
Florence Lai-Tiong, Yann Duval, Francois Krabansky
Gemcitabine is frequently used for the treatment of a number of different cancer types. Gemcitabine-related thrombotic microangiopathy (TMA) has rarely been described, but it is a life-threatening complication. The incidence of the complication varies between 0.015 and 1.4%. The present study reports the case of a 63-year-old Caucasian male who was treated with 3 cycles of carboplatin plus gemcitabine, followed by 7 cycles of gemcitabine only, and developed clinical symptoms that, together with laboratory findings, were compatible with a diagnosis of hemolytic uremic syndrome TMA...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28453901/quasi-static-acoustic-tweezing-thromboelastometry
#2
R G Holt, D Luo, N Gruver, D B Khismatullin
BACKGROUND: Thromboelastography is widely used as a tool to assess the coagulation status of surgical patients. It allows observation of changes in material properties of whole blood, beginning with early stages of clot formation and ending with clot lysis. However, the contact activation of the coagulation cascade at surfaces of thromboelastographic systems leads to inherent variability and unreliability in predicting bleeding or thrombosis risks. OBJECTIVES: To develop acoustic tweezing thromboelastometry as a noncontact method for perioperative assessment of blood coagulation...
April 28, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28449196/double-trouble-complement-mediated-thrombotic-microangiopathy-in-patients-with-hemoglobinopathies-after-stem-cell-transplantation
#3
Sonata Jodele
No abstract text is available yet for this article.
April 27, 2017: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/28448438/antiplatelet-activity-of-a-newly-synthesized-novel-ruthenium-ii-a-potential-role-for-akt-jnk-signaling
#4
Themmila Khamrang, Kuo-Chen Hung, Chih-Hsuan Hsia, Cheng-Ying Hsieh, Marappan Velusamy, Thanasekaran Jayakumar, Joen-Rong Sheu
In oncotherapy, ruthenium complexes are considered as potential alternatives for platinum compounds, and have been proved as promising anticancer drugs with high efficacy and lesser side effects. Platelet activation plays a major role in cancer metastasis and progression. Hence, this study explored the effect of a newly synthesized ruthenium complex, [Ru(η⁶-cymene)(L)Cl]BF₄(TQ5), where L = 4-phenyl-2-pyridin-2-yl-quinazoline), on human platelet activation. TQ5 (3-5 µM) inhibited concentration-dependent collagen-induced platelet aggregation in washed human platelets...
April 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28447992/intravital-microscopy-and-thrombus-induction-in-the-earlobe-of-a-hairless-mouse
#5
Daniel Strüder, Eberhard Grambow, Ernst Klar, Robert Mlynski, Brigitte Vollmar
Thrombotic complications of vascular diseases are one leading cause of morbidity and mortality in industrial nations. Due to the complex interactions between cellular and non-cellular blood components during thrombus formation, reliable studies of the physiology and pathophysiology of thrombosis can only be performed in vivo. Therefore, this article presents an ear model in hairless mice and focuses on the in vivo analysis of microcirculation, thrombus formation, and thrombus evolution. By using intravital fluorescence microscopy and the intravenous (iv) application of the respective fluorescent dyes, a repetitive analysis of microcirculation in the auricle can easily be performed, without the need for surgical preparation...
April 2, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28447420/red-cell-membrane-disorders
#6
REVIEW
J Narla, N Mohandas
Significant advances have been made in our understanding of the structural basis for altered cell function in various inherited red cell membrane disorders with reduced red cell survival and resulting hemolytic anemia. The current review summarizes these advances as they relate to defining the molecular and structural basis for disorders involving altered membrane structural organization (hereditary spherocytosis [HS] and hereditary elliptocytosis [HE]) and altered membrane transport function (hereditary overhydrated stomatocytosis and hereditary xerocytosis)...
May 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/28447417/diagnostic-approach-to-microangiopathic-hemolytic-disorders
#7
REVIEW
K Kottke-Marchant
Thrombotic micro-angiopathies (TMA) are a group of related disorders that are characterized by thrombosis of the microvasculature and associated organ dysfunction, and encompass congenital, acquired, and infectious etiologies. A hall mark of TMAs is the fragmentation of erythrocytes by the microvascular thrombi, resulting in a hemolytic anemia. There are several distinct pathophysiologies leading to microangiopathic hemolysis, ranging from decreased degradation of von Willebrand factor as seen in thrombotic thrombocytopenic purpura (TTP) to endothelial damage facilitated by Escherichia coli shiga toxin or complement dysregulation, seen in shiga toxin-related hemolytic-uremic syndrome (Stx-HUS) and complement-mediated TMA (also called atypical hemolytic-uremic syndrome), respectively...
May 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/28446488/eculizumab-in-a-child-with-atypical-haemolytic-uraemic-syndrome-and-haemophagocytic-lymphohistiocytosis-triggered-by-cytomegalovirus-infection
#8
Gloria M Fraga-Rodriguez, Sonia Brió-Sanagustin, Eulalia Turón-Viñas, Bradley P Dixon, Eduardo Carreras-González
We present the case of a 21-month-old girl with two rare and life-threatening conditions, atypical haemolytic uraemic syndrome (aHUS) and haemophagocytic lymphohistiocytosis (HLH), triggered by a cytomegalovirus (CMV) infection. Soon after admission, the girl became anuric and required continuous venovenous haemodiafiltration.Initial treatments included methylprednisolone, fibrinogen and plasma infusion (for HLH), plasmapheresis (for thrombotic microangiopathy), immunoglobulins (for inflammation), ganciclovir (for CMV infection) and the antibiotic cefotaxime...
April 26, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28446364/clinical-and-laboratory-diagnosis-of-heparin-induced-thrombocytopenia-an-update
#9
REVIEW
Emmanuel J Favaloro, Georgia McCaughan, Leonardo Pasalic
Heparin remains a commonly used anticoagulant in prophylaxis and treatment of venous and arterial thrombosis, in addition to ensuring patency of artificial blood circuits such as cardiopulmonary bypass (CPB). Heparin induced thrombocytopenia (HIT) is a rare but potentially fatal complication of heparin therapy that results from production of polyclonal antibodies to heparin in complex, usually with platelet factor 4 (PF4). In a proportion of patients, this causes platelet activation and thrombin generation, which may result in thrombosis...
April 23, 2017: Pathology
https://www.readbyqxmd.com/read/28446351/deep-vein-thrombosis-of-the-upper-extremity
#10
Jan Heil, Wolfgang Miesbach, Thomas Vogl, Wolf O Bechstein, Alexander Reinisch
BACKGROUND: Deep venous thrombosis (DVT) arises with an incidence of about 1 per 1000 persons per year; 4-10% of all DVTs are located in an upper extremity (DVT-UE). DVT-UE can lead to complications such as post-thrombotic syndrome and pulmonary embolism and carries a high mortality. METHODS: This review is based on pertinent literature, published from January 1980 to May 2016, that was retrieved by a systematic search, employing the PRISMA criteria, carried out in four databases: PubMed (n = 749), EMBASE (n = 789), SciSearch (n = 0), and the Cochrane Library (n = 12)...
April 7, 2017: Deutsches Ärzteblatt International
https://www.readbyqxmd.com/read/28446313/-effect-of-agkistrodon-acutus-venom-pca-on-huvec-activity
#11
Jin-Feng Sang, Gen-Bao Zhang, Shu-Yan Zhou, Na Ji
OBJECTIVE: To investigate the effects of Agkistrodon acutus venom protein C activator(PCA) on ultrastructure of human umbilical vein endothelial cells(HUVEC), and the levels of tissue factor(TF), vascular von Willebrand factor (vWF) and endothelin-1 secreted by HUVEC and to clarify the anti-thrombotic mechanism of PCA. METHODS: The experiments were divided into control group(DMEM), LPS group (LPS 0.1 µg/ml), PCA group(PCA 1 µg/ml) and PCA+LPS group (1 µg/ml PCA+ 0...
April 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28446191/longitudinal-analysis-of-serum-oxylipin-profile-as-a-novel-descriptor-of-the-inflammatory-response-to-surgery
#12
Arnaud M Wolfer, Alasdair J Scott, Claudia Rueb, Mathieu Gaudin, Ara Darzi, Jeremy K Nicholson, Elaine Holmes, James M Kinross
BACKGROUND: Oxylipins are potent lipid mediators demonstrated to initiate and regulate inflammation yet little is known regarding their involvement in the response to surgical trauma. As key modulators of the inflammatory response, oxylipins have the potential to provide novel insights into the physiological response to surgery and the pathophysiology of post-operative complications. We aimed to investigate the effects of major surgery on longitudinal oxylipin profile. METHODS: Adults patients undergoing elective laparoscopic or open colorectal resections were included...
April 26, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28445600/caplacizumab-reduces-the-frequency-of-major-thromboembolic-events-exacerbations-and-death-in-patients-with-acquired-thrombotic-thrombocytopenic-purpura
#13
F Peyvandi, M Scully, J A Kremer Hovinga, P Knöbl, S Cataland, K De Beuf, F Callewaert, H De Winter, R K Zeldin
BACKGROUND: Acquired thrombotic thrombocytopenic purpura (aTTP) is a life-threatening autoimmune thrombotic microangiopathy. In spite of treatment with plasma exchange and immunosuppression, patients remain at risk for thrombotic complications, exacerbations and death. In the Phase II TITAN study, treatment with caplacizumab, an anti-vWF Nanobody(®) , was shown to reduce the time to confirmed platelet count normalization and exacerbations during treatment. OBJECTIVE: The clinical benefit of caplacizumab was further investigated in a post-hoc analysis of the incidence of major thromboembolic events and exacerbations during the study drug treatment period and TTP-related death during the study...
April 26, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28445318/renal-failure-caused-by-a-partly-calcified-aortic-aneurysm-in-a-patient-with-dabigatran-therapy-a-case-report
#14
Philipp Jud, Thomas Gary, Kurt Tiesenhausen, Rupert Portugaller, Gerald Hackl, Marianne Brodmann
RATIONALE: Abdominal aortic aneurysms (AAAs) are mostly asymptomatic. If aortic aneurysms become symptomatic, complications include peripheral embolization, acute aortic occlusion, and aortic rupture. However, there are also unusual complications caused by aortic aneurysms. PATIENT CONCERNS: An 87-old male with dabigatran therapy presented with newly developed melena and acute renal failure. Radiological imaging revealed an AAA with thrombotic and calcified deposits which affected the renal arteries...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28443948/relapse-of-congenital-thrombotic-thrombocytopenic-purpura-after-spontaneous-remission-in-a-second-trimester-primigravida-case-report-and-review-of-the-literature
#15
Donavan de Souza Lúcio, Jacqueline Foelkel Pignatari, Marcelo Gil Cliquet, Henri Augusto Korkes
CONTEXT: Thrombotic microangiopathy syndrome or thrombotic thrombocytopenic purpura-hemolytic uremic syndrome (TTP-HUS) describes distinct diseases sharing common pathological features: microangiopathic hemolytic anemia and thrombocytopenia, without any other apparent cause. CASE REPORT: An 18-year-old second-trimester primigravida presented with a history of fifteen days of intense weakness, followed by diarrhea over the past six days. She reported having had low platelets since childhood, but said that she had never had bleeding or menstrual abnormalities...
April 20, 2017: São Paulo Medical Journal, Revista Paulista de Medicina
https://www.readbyqxmd.com/read/28442532/anti-inflammatory-effects-of-simvastatin-during-the-resolution-phase-of-experimentally-formed-venous-thrombi
#16
Yaping Feng, Bo Lei, Fuxian Zhang, Luyuan Niu, Huan Zhang, Mingyi Zhang
Deep venous thrombosis (DVT) is a common vascular disease and is closely linked to inflammation. Over the past decade, the potential antithrombotic effect of statins has been elucidated by clinical studies, primarily through focusing on DVT prevention. The effects of statins on DVT resolution and its underlying mechanisms have been rarely addressed. We established a rabbit model of the inferior vena cava (IVC) venous thrombosis. After 48 hours, the rabbits were treated with saline, heparin, simvastatin, or simvastatin combined with heparin, respectively, for 14 days...
April 25, 2017: Journal of Investigative Medicine: the Official Publication of the American Federation for Clinical Research
https://www.readbyqxmd.com/read/28442312/expert-statements-on-the-standard-of-care-in-critically-ill-adult-patients-with-atypical-haemolytic-uraemic-syndrome
#17
REVIEW
Elie Azoulay, Paul Knoebl, José Garnacho-Montero, Katerina Rusinova, Gennadii Galstian, Philippe Eggimann, Fekri Abroug, Dominique Benoit, Michael von Bergwelt-Baildon, Julia Wendon, Marie Scully
BACKGROUND: Atypical haemolytic uraemic syndrome (aHUS) presents similarly to thrombotic thrombocytopenic purpura (TTP), and other causes or conditions with thrombotic microangiopathy (TMA) such as DIC or sepsis. Similarity in clinical presentation may hinder diagnosis and optimal treatment selection in the urgent setting in the ICU. However, there is currently no consensus on the diagnosis or treatment of aHUS for ICU specialists. This review aims to summarise available data on the diagnosis and treatment strategies of aHUS in the ICU in order to enhance the understanding of aHUS diagnosis and outcomes in patients managed in the ICU...
April 22, 2017: Chest
https://www.readbyqxmd.com/read/28440069/occult-cancer-related-first-venous-thromboembolism-is-associated-with-an-increased-risk-of-recurrent-venous-thromboembolism
#18
Olga V Gran, Sigrid K Braekkan, Benedikte Paulsen, Hanne Skille, Frits R Rosendaal, John-Bjarne Hansen
BACKGROUND: Although venous thromboembolism (VTE) is associated with a high recurrence rate, the absolute recurrence rates in cancer-related VTE, particularly in occult cancer, are not well known. OBJECTIVES: We aimed to investigate the risk of VTE recurrence in patients with occult- and overt cancer-related VTE. METHODS: Incident VTE events among participants of the Tromsø 1-6 surveys occurring in the period 1994-2012 were included. Occult cancer was defined as cancer diagnosed within a year following a VTE, whereas overt cancer was defined as cancer diagnosed within the two years before a VTE...
April 25, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28440041/ultrasound-assisted-versus-conventional-catheter-directed-thrombolysis-for-acute-ilio-femoral-deep-vein-thrombosis-one-year-follow-up-data-of-a-randomized-controlled-trial
#19
Rolf P Engelberger, Anna Stuck, David Spirk, Torsten Willenberg, Axel Haine, Daniel Périard, Iris Baumgartner, Nils Kucher
BACKGROUND: In patients with acute ilio-femoral deep vein thrombosis (IFDVT), catheter-directed thrombolysis (CDT) aims to prevent the post-thrombotic syndrome (PTS). Adding intravascular high-frequency, low-power ultrasound energy to CDT does not seem to improve the immediate thrombolysis results but its impact on clinical outcomes at 12 months is not known. PATIENTS/METHODS: In this randomized-controlled trial, 48 patients (mean age 50±21 years, 52% women) with acute IFDVT were randomized to conventional CDT (n=24) or ultrasound-assisted CDT (USAT; n=24)...
April 25, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28439780/angelica-keiskei-an-emerging-medicinal-herb-with-various-bioactive-constituents-and-biological-activities
#20
REVIEW
Yun-Seo Kil, Sally T Pham, Eun Kyoung Seo, Mahtab Jafari
Angelica keiskei (Miq.) Koidz. (Umbelliferae) has traditionally been used to treat dysuria, dyschezia, and dysgalactia as well as to restore vitality. Recently, the aerial parts of A. keiskei have been consumed as a health food. Various flavonoids, coumarins, phenolics, acetylenes, sesquiterpene, diterpene, and triterpenes were identified as the constituents of A. keiskei. The crude extracts and pure constituents were proven to inhibit tumor growth and ameliorate inflammation, obesity, diabetics, hypertension, and ulcer...
April 24, 2017: Archives of Pharmacal Research
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