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https://www.readbyqxmd.com/read/28644649/role-of-a-neighbor-ion-in-the-fragmentation-dynamics-of-covalent-molecules
#1
A Méry, A N Agnihotri, J Douady, X Fléchard, B Gervais, S Guillous, W Iskandar, E Jacquet, J Matsumoto, J Rangama, F Ropars, C P Safvan, H Shiromaru, D Zanuttini, A Cassimi
Fragmentation of molecular nitrogen dimers (N_{2})_{2} induced by collision with low energy 90 keV Ar^{9+} ions is studied to evidence the influence of a molecular environment on the fragmentation dynamics of N_{2} cations. Following the capture of three or four electrons from the dimer, the three-body N_{2}^{+}+N^{m+}+N^{n+} [with (m,n)=(1,1) or (1, 2)] fragmentation channels provide clean experimental cases where molecular fragmentation may occur in the presence of a neighbor molecular cation. The effect of the environment on the fragmentation dynamics within the dimer is investigated through the comparison of the kinetic energy release (KER) spectra for these three-body channels and for isolated N_{2}^{(m+n)+} monomer cations...
June 9, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28643533/evaluation-of-variation-in-coagulation-among-children-with-mycoplasma-pneumoniae-pneumonia-a-case-control-study
#2
Tianhua Li, Haiying Yu, Weina Hou, Zhiyong Li, Chunfang Han, Lihong Wang
Objective Acute organ embolism in children with Mycoplasma pneumoniae pneumonia (MPP) has been reported, but changes in coagulation are unclear. This study aimed to investigate changes in coagulation in children with MPP. Methods A total of 185 children with MMP (cases) and 117 healthy children (controls) were recruited. We measured prothrombin time (PT), activated partial thromboplastin time (APTT), thrombin time (TT), and plasma fibrinogen (FIB) and D-dimer levels. Results Plasma FIB (3.39 ± 0.96 g/L vs 2...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28642239/a-novel-single-domain-antibody-against-von-willebrand-factor-a1-domain-resolves-leukocyte-recruitment-and-vascular-leakage-during-inflammation
#3
Gabriel Aymé, Frédéric Adam, Paulette Legendre, Amine Bazaa, Valérie Proulle, Cécile V Denis, Olivier D Christophe, Peter J Lenting
OBJECTIVE: von Willebrand factor (VWF) is crucial to hemostasis, but also plays a role in inflammatory processes. Unfortunately, no proper monoclonal antibodies to study VWF function in mice are currently available. We therefore aimed to generate single-domain antibodies (sdAbs) recognizing murine VWF and blocking its function in vivo. APPROACH AND RESULTS: Llama-derived sdAbs recognizing both human and murine VWF were isolated via phage display technology. One of them (designated KB-VWF-006) recognized the VWF A1 domain with picomolar affinity...
June 22, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28641682/health-effects-of-airline-cabin-environments-in-simulated-8-hour-flights
#4
(no author information available yet)
INTRODUCTION: Commercial air travel is usually without health incidents. However, there is a view that cabin environments may be detrimental to health, especially flights of 8 h or more. Concerns have been raised about deep vein thrombosis, upper respiratory tract infections, altitude sickness, and toxins from the engines. METHODS: Passenger cabin simulators were used to achieve a comparative observational study with 8-h flights at pressures equivalent to terrestrial altitudes of ground, 4000, 6000, and 8000 ft...
July 1, 2017: Aerospace Medicine and Human Performance
https://www.readbyqxmd.com/read/28641648/-change-of-thrombelastography-in-children-s-dic-and-analysis-of-its-sensitivity-and-specificity-for-diagnosis-of-dic
#5
Wen-Hao Yuan, Han-Chu Liu, Ling-Kong Zeng, Xiao-Yan Liu, Ling-Xia Zhao, Lu-Xia Mo
OBJECTIVE: To investigate the influence of thrombelastography index changes on its sensitivity and specificity for diagnosis of disseminated intravascular coagulation (DIC) in children. METHODS: A total of 149 children with DIC in our hospital from June 2013 to June 2016 were selected in DIC group, while 106 cases of non-DIC, including healthy children and children with diseases easily confused with DIC, were selected as non-DIC(control) group. The thrombelastography, D-dimer, coagulation functions including prothrombintime (PT), activated partial thromboplastin time (APTT), fibrinogen (FIB) and fibin degradation product (FDP), congental coagulation disorders and platelet count were detected in DIC and non-DIC groups; the statistics of data was performed and the sensitivity and specificity of thromelastraphy indexes such as R time, α angle MA value and A value were evaluated; the relationship of DIC with indexes was analyzed...
June 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28641567/biomarkers-in-acute-aortic-syndromes
#6
Mustafa Yildiz, Dogac Oksen, Michael Behnes, Ibrahim Akin
BACKGROUND: Acute aortic syndromes, being mostly underdiagnosed due to unspecific symptoms, are associated with high morbidity and mortality. Diagnosis carried out by transesophageal echocardiography, computed tomography and magnetic resonance imaging. However, there are lots of biochemical assays being investigated, but none of them used reliably to identify acute aortic syndromes. Biomarkers could accelerate the diagnostic time with cost effective way and could get place in definitive diagnostic algorithm of acute aortic syndrome...
June 14, 2017: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/28640324/new-paradigms-in-venous-thromboprophylaxis-of-medically-ill-patients
#7
Alex C Spyropoulos, Alex Spyropoulos, Gary E Raskob
Acutelly-ill hospitalised medical patients are at risk of venous thromboembolism (VTE), both in-hospital and in the immediate post-discharge period, and mortality from VTE is thought to be particularly high in this patient population. However, despite previous mandates from international antithrombotic guidelines such as those of the American College of Chest Physicians (ACCP) for the "universal" use of thromboprophylaxis in hospitalised medical patients, global audits suggest that implementation of thromboprophylaxis continues to be challenging because of the perceived higher risk of bleeding and lower risk of VTE than that reported in clinical trials...
June 22, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28640083/clinical-significance-of-plasma-d-dimer-in-ovarian-cancer-a-meta-analysis
#8
Jiacong Wu, Ziyi Fu, Guangquan Liu, Pengfei Xu, Juan Xu, Xuemei Jia
BACKGROUND: D-dimer has been widely used for the diagnosis and prognosis of ovarian cancer, but there is still controversy on its prediction value of ovarian cancer. OBJECTIVES: To explore the clinical significance of plasma D-dimer level on ovarian cancer systematically. METHODS: Using PubMed, Cochrane Library, and Web of Science libraries, all the relevant studies for the diagnostic and prognostic value of plasma D-dimer for ovarian cancer and the relationship between elevated D-dimer level and venous thromboembolism (VTE) risk of ovarian cancer were searched till May 30, 2016...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28636990/impact-of-pretreatment-plasma-d-dimer-levels-and-its-perioperative-change-on-prognosis-in-operable-esophageal-squamous-cell-carcinoma
#9
Jianbo Li, Zhifan Zheng, Min Fang
The aim of this study was to investigate the relationship between plasma D-dimer levels and its perioperative change and clinicopathological parameters in patients with operable esophageal squamous cell carcinoma (ESCC). We also analyzed their prognostic significance in ESCC patients. The data of 294 ESCC patients between December 2007 and December 2012 in Mingzhou hospital, Ningbo, China were analyzed retrospectively. Plasma D-dimer levels were measured one week before surgery and on the thirtieth postoperative day...
June 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28635193/comparing-the-effect-of-cardiac-biomarkers-on-the-outcome-of-normotensive-patients-with-acute-pulmonary-embolism
#10
Yaser Jenab, Marzieh Pourjafari, Maryam Sotoudeh, Masoumeh Lotfi-Tokaldany, Nasrin Etesamifard, Shapour Shirani, Arash Jalali, Younes Nozari, Hamid-Reza Poorhosseini
Acute pulmonary embolism (PE) is a cardiovascular challenge with potentially fatal consequences. This study was designed to observe the association of novel cardiac biomarkers with outcome in this setting. In this prospective study, from 86 patients with a confirmed diagnosis of PE, 59 patients met the inclusion criteria (22 men, 37 women; mean age, 63.36±15.04 y).The plasma concentrations of N-terminal pro-brain natriuretic peptide (NT-proBNP), growth differentiation factor-15 (GDF-15), heart-type fatty acid-binding protein (H-FABP), tenascin-C, and D-dimer were measured at the time of confirmed diagnosis...
May 18, 2017: Monaldi Archives for Chest Disease, Archivio Monaldi Per le Malattie del Torace
https://www.readbyqxmd.com/read/28635149/underuse-of-risk-assessment-and-overuse-of-ctpa-in-patients-with-suspected-pulmonary-thromboembolism
#11
Michael Perera, Leena Aggarwal, Ian A Scott, Nicholas Cocks
INTRODUCTION: Evidence suggests potential overuse of computerised tomography pulmonary angiography (CTPA) in patients with suspected pulmonary thromboembolism (PTE) in the absence of consistent use of pre-test clinical prediction rules and D-dimer assays. METHODS: 344 consecutive patients undergoing CTPA at a tertiary hospital were studied for use of D-dimer assays and clinical prediction rules for PTE. For each patient, a modified Wells score (mWS), revised Geneva score (rGS) and PISA model were calculated retrospectively; performance characteristics for each rule for PTE were determined in reference to results of CTPA...
June 21, 2017: Internal Medicine Journal
https://www.readbyqxmd.com/read/28631469/the-chemical-composition-of-blackberry-press-cake-polyphenolic-extract-and-defatted-seeds-and-their-effects-on-cecal-fermentation-bacterial-metabolites-and-blood-lipid-profile-in-rats
#12
Monika Kosmala, Adam Jurgonski, Jerzy Juskiewicz, Elżbieta Karlińska, Jakub Macierzyński, Edward Roj, Zenon Zduńczyk
Blackberry fiber (BF), extracted blackberry fiber (EBF), defatted blackberry seeds (DBS) and blackberry polyphenols (BP) were added to diets of rats. A control diet, fiber diets (BF, EBF, DBS) with 6% addition instead of cellulose, a polyphenol diet (BP) with 1% addition were administered for 4 weeks. BF and DBS contained polyphenols (3.6%), EBF did not. DBS was free of fat. Ellagitannins were the main phenolics; mostly dimers (sanguiin H-6 with isomers) and monomers (pedunculagin, casuarictin isomer, and sanguiin H-2 isomer)...
June 20, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28630983/simplified-and-original-wells-rules-plus-age-adjusted-d-dimer-test-were-useful-for-ruling-out-suspected-pe
#13
Alex Gallus
No abstract text is available yet for this article.
June 20, 2017: Annals of Internal Medicine
https://www.readbyqxmd.com/read/28629414/fibrinogen-deficiency-in-a-dog-a-case-report
#14
Franck Jolivet, Armelle Diquélou, Catherine Trumel, Simon Privat, Olivier Dossin
BACKGROUND: Among coagulation disorders, primary fibrinogen deficiency is very rare in dogs. It is divided into hypofibrinogenemia, afibrinogenemia and dysfibrinogenemia. Afibrinogenemia has been described in three dogs. There are, however, no published case reports of primary hypofibrinogenemia in dogs. CASE PRESENTATION: A 1.5 year-old male German Pointer dog was evaluated for a locked-jaw syndrome associated with eye protrusion which appeared after a minor head trauma...
June 19, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28629364/changes-in-concentrations-of-haemostatic-and-inflammatory-biomarkers-in-synovial-fluid-after-intra-articular-injection-of-lipopolysaccharide-in-horses
#15
Stine Mandrup Andreassen, Anne Mette Lindberg Vinther, Søren Saxmose Nielsen, Pia Haubro Andersen, Aziz Tnibar, Annemarie T Kristensen, Stine Jacobsen
BACKGROUND: Septic arthritis is a common and potentially devastating disease characterized by severe intra-articular (IA) inflammation and fibrin deposition. Research into equine joint pathologies has focused on inflammation, but recent research in humans suggests that both haemostatic and inflammatory pathways are activated in the joint compartment in arthritic conditions. The aim of this study was to characterize the IA haemostatic and inflammatory responses in horses with experimental lipopolysaccharide (LPS)-induced joint inflammation...
June 19, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28627093/characterization-of-thrombosis-in-patients-with-proteus-syndrome
#16
Kim M Keppler-Noreuil, Jay N Lozier, Julie C Sapp, Leslie G Biesecker
Patients with overgrowth and complex vascular malformation syndromes, including Proteus syndrome have an increased risk of thromboembolism. Proteus syndrome is a mosaic, progressive overgrowth disorder involving vasculature, skin, and skeleton, and caused by a somatic activating mutation in AKT1. We conducted a comprehensive review of the medical histories and hematologic evaluations of 57 patients with Proteus syndrome to identify potential risk factors for thrombosis. We found that six of ten patients, who were deceased, died secondary to deep venous thrombosis and/or pulmonary embolism...
June 19, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28627022/dft-studies-of-dimerization-reactions-of-boroles
#17
Zheng Wang, Yu Zhou, Wai Han Lam, Rian D Dewhurst, Holger Braunschweig, Todd B Marder, Zhenyang Lin
Boroles undergo dimerization reactions to give Diels-Alder (DA) dimers, bridged-bicyclic (BB) dimers or spiro dimers (SD) depending on the substituents on the borole. We performed DFT calculations to investigate how different substituents at the carbon atoms of the butadiene backbone as well as at the boron atom influence the dimerization reaction pathways. The DFT results show that, in general, both the DA and BB dimers are easily accessible kinetically, and the DA dimers are thermodynamically more stable than the BB dimers...
June 18, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28625266/-risk-factors-of-deep-venous-thrombosis-associated-with-peripherally-inserted-central-venous-catheter-in-upper-extremity-in-icu
#18
Ning Zhao, Jiale Zhang, Ting Jiang, Xia Chen, Jianning Wang, Chengzhi Ding, Fen Liu, Kejian Qian, Rong Jiang
OBJECTIVE: To analyze the incidence and its risk factors of peripherally inserted central venous catheter related upper extremity deep venous thrombosis (PICC-UEDVT) in intensive care unit (ICU). METHODS: Clinical data of the patients received PICCs in ICU of the First Affiliated Hospital of Nanchang University from August 2013 to August 2016 were retrospectively analysed. The inclusion criteria in the study included: the age > 18 years old, catheter indwelling time > 1 week and the complete relevant information...
February 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28625259/-antithrombin-iii-for-early-diagnosis-of-dic-in-sepsis-patients-a-retrospective-analysis-with-445-patients
#19
Yanjing Xu, Ran Zhu, Yini Sun, Xin Li, Xiaochun Ma
OBJECTIVE: To investigated the role of antithrombin III (AT-III) levels in the early diagnosis of disseminated intravascular coagulation (DIC) in patients with sepsis and the predictive effect of AT-III on the development of DIC. METHODS: A retrospective study was conducted. Patients admitted to intensive care unit (ICU) of the First Affiliated Hospital of China Medical University from January to December in 2015 were enrolled. The patients were divided into sepsis group and non-sepsis group according to the diagnostic criteria of sepsis...
February 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28623951/progressive-respiratory-distress-in-a-42-year-old-hiv-positive-woman-with-systemic-lupus-erythematosus
#20
Katongo Mutengo, Patrice Mukomena, Nason Lambwe, Owen Ngalamika
BACKGROUND: Identifying and treating the cause of pulmonary symptoms in HIV patients with underlying systemic lupus erythematosus (SLE) can be very challenging. Delays in diagnosing active SLE in HIV patients can lead to significant morbidity and even mortality. We report the case of an HIV-positive woman with SLE who presented with severe respiratory distress. CASE PRESENTATION: A 42-year-old HIV-positive woman presented with a 7-month history of anorexia, progressive dyspnoea, and a productive cough...
June 17, 2017: European Journal of Medical Research
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