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https://www.readbyqxmd.com/read/28728901/using-au-nano-c60-nanocomposite-as-an-enhanced-sensing-platform-in-modeling-a-tnt-aptasensor
#1
Faezeh Shahdost-Fard, Mahmoud Roushani, Azadeh Azadbakht
Based on the unique characteristics of the combination of fullerene and gold nanoparticles, we successfully designed a new and facile nanocomposite (Au@nano-C60) to fabricate an aptasensor for the ultra-sensitive and selective detection of TNT. The gold nanoparticles decorated fullerene onto a glassy carbon electrode was prepared using an electrochemical method by the in situ generation of Au nanoparticles onto the surface of the glassy carbon electrode modified with activated fullerene. Successively, the NH2-Apt as a receptor molecule of 2,4,6-Trinitrotoluen was covalently attached onto the modified electrode surface with the resultant nanocomposite...
July 17, 2017: Analytical Biochemistry
https://www.readbyqxmd.com/read/28725277/sabcs-2016-systemic-therapy-for-metastatic-breast-cancer
#2
REVIEW
Simon Peter Gampenrieder, Gabriel Rinnerthaler, Richard Greil
At the 2016 San Antonio Breast Cancer Symposium, several interesting phase II and phase III studies investigating systemic therapies for metastatic breast cancer were presented. The PrEGOC 0102 trial demonstrated that the combination of fulvestrant plus everolimus is safe and effective and could be an alternative to exemestane plus everolimus for selected patients with hormone-receptor positive, HER2-negative disease. The pan-PI3K inhibitor buparlisib showed some activity in combination with fulvestrant after failure of everolimus in the BELLE-3 trial...
2017: Memo
https://www.readbyqxmd.com/read/28717414/cardiac-magnetic-resonance-in-patients-with-acute-cardiac-injury-and-unobstructed-coronary-arteries
#3
Giovanni Salvatore Camastra, Stefano Sbarbati, Massimiliano Danti, Luca Cacciotti, Raffaella Semeraro, Sabino Walter Della Sala, Gerardo Ansalone
AIM: To define the role of cardiac magnetic resonance (CMR) by analyzing a particular group of patients with suspected acute coronary syndrome (ACS) and normal coronary angiogram. METHODS: From January 2009 to December 2015, we examined 220 patients with clinical suspicion of ACS, Troponin elevation [the threshold used to define a positive Troponin T test (TnT) was 0.1 ng/mL] and no significant coronary disease at angiography (the patients were considered to have significant angiographic disease only a 50% stenosis was detected in any of their coronary arteries)...
June 28, 2017: World Journal of Radiology
https://www.readbyqxmd.com/read/28712188/a-novel-link-between-adipokines-and-lipoprotein-a-to-contemplate-their-diagnostic-role-in-patients-with-stemi-and-nstemi
#4
Shazia Rashid, Rukhshan Khurshid, Uzma Faryal Amir, Arif Malik, Sumera Qazi
BACKGROUND: Early detection of cardiac events allow better and cost-effective triage and welltimed management of these patients. Study was conducted to evaluate the prognostic significance of plasma adiponectin, resistin and lipoprotein (a) in a group of patients with ST segment elevation myocardial infarction and non-ST-segment elevation myocardial infarction. These parameters were also compared with other predictors like troponin T, troponin I and CK-MB. METHODS: Present study was based on the 100 patients with AMI of whom 52 had a diagnosis of STEMI, and 48 had NSTEMI...
January 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28704807/high-sensitivity-troponin-t-and-nt-probnp-kinetics-in-breast-cancer-chemotherapy
#5
Pooja Advani, Jonathan Hoyne, Alvaro Moreno-Aspita, Marcia Dubin, Shelly Brock, Caroline Harlow, Saranya Chumsri, Thomas Suter, Joseph L Blackshear
BACKGROUND/AIMS: Doxorubicin (DOX) and trastuzumab (TRA) are associated with cardiac dysfunction. METHOD: High-sensitivity troponin T (hs-TnT) and brain natriuretic peptide attached to the amino acid N-terminal fragment in the prohormone (NT-proBNP) were measured before and on days +1, +2, +3, and +7 during cycles 1 and 2 of therapy with DOX or TRA in breast cancer patients. RESULTS: Five of eleven DOX-treated women, compared with 2/11 TRA-treated women, had undetectable baseline hs-TnT...
July 14, 2017: Chemotherapy
https://www.readbyqxmd.com/read/28698323/performance-of-highly-sensitive-cardiac-troponin-t-assay-to-detect-ischaemia-at-pet-ct-in-low-risk-patients-with-acute-coronary-syndrome-a-prospective-observational-study
#6
Beata Morawiec, Stephane Fournier, Maxime Tapponnier, John O Prior, Pierre Monney, Vincent Dunet, Nathalie Lauriers, Frederique Recordon, Catalina Trana, Juan-Fernando Iglesias, Damian Kawecki, Olivier Boulat, Daniel Bardy, Sabine Lamsidri, Eric Eeckhout, Olivier Hugli, Olivier Muller
BACKGROUND: Highly sensitive troponin T (hs-TnT) assay has improved clinical decision-making for patients admitted with chest pain. However, this assay's performance in detecting myocardial ischaemia in a lowrisk population has been poorly documented. PURPOSE: To assess hs-TnT assay's performance to detect myocardial ischaemia at positron emission tomography/CT (PET-CT) in low-risk patients admitted with chest pain. METHODS: Patients admitted for chest pain with a nonconclusive ECG and negative standard cardiac troponin T results at admission and after 6 hours were prospectively enrolled...
July 10, 2017: BMJ Open
https://www.readbyqxmd.com/read/28688362/ph-dependent-silver-nanoparticles-releasing-titanium-implant-a-novel-therapeutic-approach-to-control-peri-implant-infection
#7
Yiwen Dong, Hui Ye, Yi Liu, Lihua Xu, Zuosu Wu, Xiaohui Hu, Jianfeng Ma, Janak L Pathak, Jinsong Liu, Gang Wu
Peri-implant infection control is crucial for implant fixation and durability. Antimicrobial administration approaches to control peri-implant infection are far from satisfactory. During bacterial infection, pH level around the peri-implant surface decreases as low as pH 5.5. This change of pH can be used as a switch to control antimicrobial drug release from the implant surface. Silver nanoparticles (AgNPs) have broad-spectrum antimicrobial properties. In this study, we aimed to design a pH-dependent AgNPs releasing titania nanotube arrays (TNT) implant for peri-implant infection control...
June 23, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28685904/second-hydrogen-atom-abstraction-by-molecular-ions
#8
Svetlana Tsizin, Boaz Seemann, Tal Alon, Aviv Amirav
We report the observation of a new physical phenomenon of the addition of two hydrogen atoms to molecular ions thus forming [M+2H](+) ions. We demonstrate such second hydrogen atom abstraction onto the molecular ions of pentaerythritol and trinitrotoluene (TNT). We used both GC-MS with supersonic molecular beam (SMB) with methanol added into its make-up gas and electron ionization LC-MS with SMB with methanol as the LC solvent. We found that the formation of methanol clusters resulted upon electron ionization in the formation of dominant protonated pentaerythritol ion at m/z=137 plus about 70% relative abundance of pentaerythritol molecular ion with two additional hydrogen atoms at m/z=138 which is well above the 5...
July 7, 2017: Journal of Mass Spectrometry: JMS
https://www.readbyqxmd.com/read/28681982/application-of-paper-spray-ionization-for-explosives-analysis
#9
Chia-Wei Tsai, Christopher A Tipple, Richard A Yost
RATIONALE: A desired feature in the analysis of explosives is to decrease the time of the entire analysis procedure, including sampling. A recently utilized ambient ionization technique, paper spray ionization (PSI), provides the possibility of combining sampling and ionization. However, an interesting phenomenon that occurs in generating negatively charged ions pose some challenges in applying PSI to explosives analysis. The goal of this work is to investigate the possible solutions for generating explosives ions in negative mode PSI...
July 6, 2017: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28665421/multifunctional-electrospun-polymeric-nanofibrous-mats-for-catalytic-reduction-photocatalysis-and-sensing
#10
Osman Arslan, Tamer Uyar
Fabrication and decoration of flexible Nylon 6,6 polymeric nanofibrous mats for production of multifunctional electrospun material was accomplished via visible light-emitting surface-protected silicon quantum dots (Si QD), ZnO nanoparticles (ZnO NP) and Pd nanocubes (Pd NC). UV-range light was utilized for Si QD production and, after hydrolysis/condensation together with nucleation and growth reactions, amine-modified, fluorescent Si QD were obtained. Additionally, available molecular groups on the Si QD coated onto the polymeric nanofibrous mats provided further attachment of metal oxide and metal NP for various catalytic purposes...
July 13, 2017: Nanoscale
https://www.readbyqxmd.com/read/28662404/novel-laser-induced-photoacoustic-spectroscopy-for-instantaneous-trace-detection-of-explosive-materials
#11
Yasser H El-Sharkawy, Sherif Elbasuney
Laser photoacoustic spectroscopy (LPAS) is an attractive technology in terms of simplicity, ruggedness, and overall sensitivity; it detects the time dependent heat generated (thermo-elastic effect) in the target via interaction with pulsed optical radiation. This study reports on novel LPAS technique that offers instant and standoff detection capabilities of trace explosives. Over the current study, light is generated using pulsed Q-switched Nd:YAG laser; the generated photoacoustic response in stimulated explosive material offers signature values that depend on the optical, thermal, and acoustical properties...
June 15, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28650607/self-diffusion-driven-ultrafast-detection-of-ppm-level-nitroaromatic-pollutants-in-aqueous-media-using-a-hydrophilic-fluorescent-paper-sensor
#12
Wei Lu, Jiawei Zhang, Youju Huang, Patrick Théato, Qing Huang, Tao Chen
Development of fluorescent film probes for toxic nitroaromatic compound pollutants (NACs) such as 2,4,6-trinitrotoluene (TNT) in real water samples implies broad applications in environmental and industrial safety control. Despite many recent advances, there are still some difficult challenges facing this area, for example, the restricted sensitivity and long response time caused by hindered and slow diffusion of aqueous NACs samples inside a dense, solid film. Hence, we report herein a robust fluorescent paper sensor with improved sensing abilities, which is prepared by absorbing hydrophilic pyrene-functionalized polymer uniformly into cellulose-based filter papers...
July 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28648641/glypican-based-drug-releasing-titania-implants-to-regulate-bmp2-bioactivity-as-a-potential-approach-for-craniosynostosis-therapy
#13
Manpreet Bariana, Prem Dwivedi, Sarbin Ranjitkar, John A Kaidonis, Dusan Losic, Peter J Anderson
Advances in molecular biology and nanomedicine based therapies hold promise to obviate the need of multiple surgical interventions (associated with current management) in craniosynostosis by preventing bone re-ossification. One such adjunctive therapy involves application of glypicans 1 and 3 (GPC1 and GPC3) that are BMP inhibitors implicated in downregulating the BMP2 activity in prematurely fusing sutures. Electrochemically anodized Titania nanotube (TNT) arrays have been recognized as a promising localized, long-term drug delivery platform for bone-related therapies...
June 23, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28644092/single-and-multiple-cardiovascular-biomarkers-in-subjects-without-a-previous-cardiovascular-event
#14
Manan Pareek, Deepak L Bhatt, Muthiah Vaduganathan, Tor Biering-Sørensen, Arman Qamar, Axel Cp Diederichsen, Jacob Eifer Møller, Peter Hindersson, Margrét Leósdóttir, Martin Magnusson, Peter M Nilsson, Michael H Olsen
Aims To assess the incremental value of biomarkers, including N-terminal prohormone of brain natriuretic peptide (NT-proBNP), high-sensitivity troponin T (hs-TnT), high-sensitivity C-reactive protein (hs-CRP), interleukin-6 (IL-6), growth differentiation factor 15 (GDF-15), and procollagen type 1 N-terminal propeptide (P1NP), in predicting incident cardiovascular events and mortality among asymptomatic individuals from the general population, beyond traditional risk factors, including fasting glucose and renal function (cystatin C), medication use, and echocardiographic measures...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/28633141/interaction-of-soluble-cxc-ligand-16-and-cardiac-injury-markers-in-hemodialysis-patients
#15
Wenjin Liu, Lulu Wang, Yongyue Wei, Xiurong Li, Chaoqing Gao, Jianmei Zhou, Liang Wang, Zhuxing Sun, Hong Chu, Youwei Bai, Junwei Yang
BACKGROUND: Recent data suggest that there is a pathogenic role for CXC ligand 16 (CXCL16) in cardiovascular diseases. Little is known about circulating CXCL16 in patients with kidney dysfunction. We explored the relationships of plasma CXCL16 with cardiac injury markers in a group of dialysis patients. METHODS: Plasma CXCL16 and C-reactive protein (CRP) were measured in 366 patients who were on maintenance hemodialysis. Cardiac injury was evaluated via measurements of the circulating B-type natriuretic peptide (BNP), N-terminal prohormone of brain natriuretic peptide (NT proBNP), Troponin I (TnI), and Troponin T (TnT)...
2017: American Journal of Nephrology
https://www.readbyqxmd.com/read/28625240/-dynamic-changes-of-complement-level-in-patients-with-acute-coronary-syndrome-and-its-relationships-with-myocardial-injury
#16
Aihong Shao, Xin Qi, Qi Li, Wenjun Jia, Liping Wei, Wenguang Hou, Yanfang Qi, Yue Liu
OBJECTIVE: To study relationships between myocardial injury and the levels of serum complement C3, C4 and C5b-9 in patients with acute coronary syndrome (ACS). METHODS: A retrospectively analysis was conducted. 170 ACS patients [including 110 cases of ST-segment elevation myocardial infarction (STEMI) and 60 cases of non-ST-segment elevation acute coronary syndrome (NSTE-ACS)] with ischemic chest pain or chest discomfort onset within the prior 12 hours admitted to the cardiology department of Tianjin Union Medicine Center from January 2014 to July 2016 were enrolled...
June 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28618276/common-explosives-tnt-rdx-hmx-and-their-fate-in-the-environment-emphasizing-bioremediation
#17
REVIEW
Soumya Chatterjee, Utsab Deb, Sibnarayan Datta, Clemens Walther, Dharmendra K Gupta
Explosive materials are energetic substances, when released into the environment, contaminate by posing toxic hazards to environment and biota. Throughout the world, soils are contaminated by such contaminants either due to manufacturing operations, military activities, conflicts of different levels, open burning/open detonation (OB/OD), dumping of munitions etc. Among different forms of chemical explosives, 2,4,6-trinitrotoluene (TNT), hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX), and octahydro-1,3,5,7-tetranitro- 1,3,5,7-tetrazocine (HMX) are most common...
June 4, 2017: Chemosphere
https://www.readbyqxmd.com/read/28610200/a-new-species-of-i-cicadatra-i-kolenati-1857-from-china-with-primary-phylogenetic-analyses-of-the-tribe-cicadatrini-hemiptera-cicadidae
#18
X U Wang, Zhiqiang He, Cong Wei
A new species of the genus Cicadatra Kolenati, 1857, C. hei sp. nov., from Sichuan Province, China is described. A key to the species of Cicadatra from China is provided. Morphological characters for 9 taxa of the tribe Cicadatrini and for 3 outgroup taxa are examined to present the first phylogenetic reconstruction within the Cicadatrini. The monophyly of Cicadatrini is supported, and Cicadatrini is more allied to the outgroup Cicadetta of the subfamily Cicadettinae (= Tibicininae auct.) from TNT and WinClada analyses...
March 9, 2017: Zootaxa
https://www.readbyqxmd.com/read/28598144/use-of-mass-spectrometric-vapor-analysis-to-improve-canine-explosive-detection-efficiency
#19
Ta-Hsuan Ong, Ted Mendum, Geoff Geurtsen, Jude Kelley, Alla Ostrinskaya, Roderick Kunz
Canines remain the gold standard for explosives detection in many situations, and there is an ongoing desire for them to perform at the highest level. This goal requires canine training to be approached similarly to scientific sensor design. Developing a canine training regimen is made challenging by a lack of understanding of the canine's odor environment, which is dynamic and typically contains multiple odorants. Existing methodology assumes that the handler's intention is an adequate surrogate for actual knowledge of the odors cuing the canine, but canines are easily exposed to unintentional explosive odors through training material cross-contamination...
June 9, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28595746/ratio-of-high-sensitivity-troponin-to-creatine-kinase-mb-in-takotsubo-syndrome
#20
Charles Pirlet, Luc Pierard, Victor Legrand, Olivier Gach
BACKGROUND: Takotsubo syndrome (TT) and myocardial infarction (MI) share numerous similarities in clinical presentation, ECG modifications and biomarker elevation. We sought to determine whether the ratio of high-sensitivity cardiac troponin T (hs-TnT) to the myocardial fraction of creatine kinase (CKMB) could be a potent discriminator between TT and MI patients. METHODS: We separately present analysis of data from retrospective files and prospectively recruited patients presenting with TT (35 retrospective and 42 prospective), NSTEMI (48 retrospective and 75 prospective) and STEMI (20 retrospective and 39 prospective)...
June 3, 2017: International Journal of Cardiology
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