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https://www.readbyqxmd.com/read/29772902/microwave-assisted-method-for-the-synthesis-of-perylene-ester-imides-as-a-gateway-towards-unsymmetrical-perylene-bisimides
#1
Ravindra Kumar Gupta, Ammathnadu Sudhakar Achalkumar
A high yielding microwave-assisted synthetic method to obtain unsymmetrical perylene diester monoimide (PEI), by treating the perylene tetrester (PTE) with requisite amine is reported. Perylene-based molecules are widely used in the construction of self-assembled supramolecular structures because of their propensity to aggregate under various conditions. In comparison to perylene bisimides (PBIs), PEIs are less studied in organic electronics/self-assembly due to the synthetic difficulty and low yields in their preparation...
May 18, 2018: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29770766/histogram-pattern-analysis-of-the-lung-perfused-blood-volume-for-assessment-of-pulmonary-thromboembolism
#2
Munemasa Okada, Takafumi Nomura, Yoshiteru Nakashima, Yoshie Kunihiro, Shoji Kido
PURPOSE: We aimed to evaluate the usefulness of histograms of lung perfused blood volume (HLPBV) based on the presence of pulmonary thromboembolism (PTE) and the pulmonary embolic burden. METHODS: A total of 168 patients (55 males; mean age, 62.9 years) underwent contrast-enhanced dual-energy computed tomography (DECT) between January 1 2012 and October 31 2014. Initial DECT images were three-dimensionally reconstructed, and the HLPBV patterns were divided into three types, including the symmetric type (131 patients, 78...
May 2018: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/29766647/competing-mechanisms-for-photocurrent-induced-at-the-monolayer-multilayer-graphene-junction
#3
Youwei Zhang, Hemei Zheng, Qiyuan Wang, Chunxiao Cong, Laigui Hu, Pengfei Tian, Ran Liu, Shi-Li Zhang, Zhi-Jun Qiu
Graphene is characterized by demonstrated unique properties for potential novel applications in photodetection operated in the frequency range from ultraviolet to terahertz. To date, detailed work on identifying the origin of photoresponse in graphene is still ongoing. Here, scanning photocurrent microscopy to explore the nature of photocurrent generated at the monolayer-multilayer graphene junction is employed. It is found that the contributing photocurrent mechanism relies on the mismatch of the Dirac points between the monolayer and multilayer graphene...
May 16, 2018: Small
https://www.readbyqxmd.com/read/29761329/bactericidal-and-virucidal-activity-of-povidone-iodine-and-chlorhexidine-gluconate-cleansers-in-an-in-vivo-hand-hygiene-clinical-simulation-study
#4
Maren Eggers, Torsten Koburger-Janssen, Lois S Ward, Craig Newby, Stefan Müller
INTRODUCTION: Standard in vitro and in vivo tests help demonstrate efficacy of hand hygiene products; however, there is no standard in vivo test method for viruses. We investigated the bactericidal and virucidal efficacy of povidone-iodine (PVP-I) 7.5% scalp and skin cleanser, chlorhexidine gluconate (CHG) 4% hand cleanser and the reference hand wash (soft soap) in 15 healthy volunteers following European Standard EN1499 (hygienic hand wash test method for bacteria), which was adapted for virucidal testing...
May 14, 2018: Infectious Diseases and Therapy
https://www.readbyqxmd.com/read/29751609/pterostilbene-and-4-methoxyresveratrol-inhibited-lipopolysaccharide-induced-inflammatory-response-in-raw264-7-macrophages
#5
Yun Yao, Kehai Liu, Yueliang Zhao, Xiaoqian Hu, Mingfu Wang
Pterostilbene (Pte) and 4′-Methoxyresveratrol (4MR) are methylated derivatives of resveratrol. We investigated the anti-inflammatory effect of Pte and 4MR in lipopolysaccharide (LPS)-stimulated RAW264.7 murine macrophages. Both Pte and 4MR significantly reduced LPS-induced nitric oxide release by inhibiting the inducible nitric oxide synthase mRNA expression. Moreover, both of them inhibited LPS-induced mRNA expression of inflammatory cytokines including monocyte chemoattractant protein (MCP)-1, interleukin (IL)-6 and IL-1β, and tumor necrosis factor α (TNF-α), and attenuated LPS-induced nuclear factor-κB (NF-κB) activation by decreasing p65 phosphorylation...
May 11, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29751336/the-role-of-nicotinic-receptor-genes-chrn-in-the-pathways-of-prenatal-tobacco-exposure-on-smoking-behavior-among-young-adult-light-smokers
#6
Arielle S Selya, Dale S Cannon, Robert B Weiss, Lauren S Wakschlag, Jennifer S Rose, Lisa Dierker, Donald Hedeker, Robin J Mermelstein
BACKGROUND: Prenatal tobacco exposure (PTE) is associated with more frequent smoking among young, light smokers. Little is known about how nicotinic acetylcholine receptor (CHRN) genes may contribute to this relationship. METHODS: Data were drawn from a longitudinal cohort of young light smokers of European ancestry (N = 511). Three single nucleotide polymorphisms (SNPs) among offspring, rs16969968 and rs6495308 in CHRNA5A3B4 and rs2304297 in CHRNB3A6, were analyzed with respect to whether they 1) predict PTE status; 2) confound the previously-reported effects of PTE on future smoking; 3) have effects on youth smoking frequency that are mediated through PTE; and 4) have effects that are moderated by PTE...
May 3, 2018: Addictive Behaviors
https://www.readbyqxmd.com/read/29746110/base-mechanism-to-the-hydrolysis-of-phosphate-triester-promoted-by-the-cd-2-cd-2-active-site-of-phosphotriesterase-a-computational-study
#7
Marcelo A Chagas, Eufrásia S Pereira, Marina P B Godinho, Júlio Cosme S Da Silva, Willian R Rocha
In the present work, density functional theory (DFT) calculations at the B3LYP/6-31+G(d) and including dispersion effects were used to investigate the hydrolysis of paraoxon, using a cluster model of the active site of Cd2+ /Cd2+ -phosphotriesterase (PTE) from Pseudomonas diminuta. The mechanism proposed here consist of (i) Exchange of the coordinated water molecule and coordination of the substrate to the more solvent exposed Cdβ center in monodentate fashion, (ii) protonation of the μ-hydroxo bridge by the uncoordinated water molecule and in situ formation of the nucleophile, (iii) formation of a pentacoordinate intermediate with significant bond breaking to the leaving group and bond formation to the nucleophile, and (iv) protonation of the Asp301 residue and restoration of the active site through the coordination of another water molecule of the medium...
May 10, 2018: Inorganic Chemistry
https://www.readbyqxmd.com/read/29727938/combining-raw-and-compositional-data-to-determine-the-spatial-patterns-of-potentially-toxic-elements-in-soils
#8
C Boente, M T D Albuquerque, A Fernández-Braña, S Gerassis, C Sierra, J R Gallego
When considering complex scenarios involving several attributes, such as in environmental characterization, a clearer picture of reality can be achieved through the dimensional reduction of data. In this context, maps facilitate the visualization of spatial patterns of contaminant distribution and the identification of enriched areas. A set, of 15 Potentially Toxic Elements (PTEs) - (As, Ba, Cd, Co, Cr, Cu, Hg, Mo, Ni, Pb, Sb, Se, Tl, V, and Zn), was measured in soil, collected in Langreo's municipality (80km2 ), Spain...
August 1, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29687285/anti-cancer-effect-of-xao-tam-phan-paramignya-trimera-methanol-root-extract-on-human-breast-cancer-cell-line-mcf-7-in-3d-model
#9
Lam-Huyen Nguyen-Thi, Sinh Truong Nguyen, Thao Phuong Tran, Chinh-Nhan Phan-Lu, Trung The Van, Phuc Van Pham
BACKGROUND: Cancer is one of the leading causes of death in the world. A great deal of effort has been made to discover new agents for cancer treatment. Xao tam phan (Paramignya trimera) is a traditional medicine of Vietnam used in cancer treatment for a long time, yet there is not much scientific evidence proving its anticancer potency. The study aimed to evaluate the toxicity of Paramignya trimera extract (PTE) on multicellular tumor spheres (MCTS) of MCF-7 cells using hanging drop technique...
April 24, 2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29685008/medicamentous-thrombolysis-disguises-pulmonary-thromboembolism-as-a-cause-of-death
#10
I Šoša, A Ferencic, V Stemberga, G Zamolo, S Arbanas, I Dasek, M Perkovic, D Cuculic
We report the case of a 31-year-old female who was admitted to the emergency department with symptoms of cardiac arrest and ultimately died in spite of enormous resuscitation efforts. During resuscitation, pulmonary embolism was considered as a possible non-cardiac cause of cardiac arrest, and following its extremely unfavorable prognosis, the fatal outcome was not so surprising. However, since acute pulmonary emboli obstructing blood flow to a lobe or multiple lung segments was suspected, alteplase was indicated and administered...
March 2018: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/29678648/determinants-of-health-related-quality-of-life-1-year-after-pulmonary-thromboendarterectomy
#11
Oksana Kamenskaya, Asya Klinkova, Irina Loginova, Alexander Chernyavskiy, Alexander Edemskiy, Vladimir V Lomivorotov, Alexander Karaskov
AIM: Pulmonary thromboendarterectomy (PTE) is a recognized treatment for patients with chronic thromboembolic pulmonary hypertension (CTEPH), with good long-term haemodynamic results. The aim of this study was to test the hypothesis that the dynamics of health-related quality of life (QoL), 1 year after PTE, depends both on the clinical determinants associated with the underlying disease and the adverse events occurring in the early postoperative period. METHODS: This prospective cohort study included 136 patients with CTEPH...
April 17, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29667129/elevation-of-mmp-9-levels-promotes-epileptogenesis-after-traumatic-brain-injury
#12
Barbara Pijet, Marzena Stefaniuk, Agnieszka Kostrzewska-Ksiezyk, Photini-Effie Tsilibary, Athina Tzinia, Leszek Kaczmarek
Posttraumatic epilepsy (PTE) is a recurrent seizure disorder that often develops secondary to traumatic brain injury (TBI) that is caused by an external mechanical force. Recent evidence shows that the brain extracellular matrix plays a major role in the remodeling of neuronal connections after injury. One of the proteases that is presumably responsible for this process is matrix metalloproteinase-9 (MMP-9). The levels of MMP-9 are elevated in rodent brain tissue and human blood samples after TBI. However, no studies have described the influence of MMP-9 on the development of PTE...
April 17, 2018: Molecular Neurobiology
https://www.readbyqxmd.com/read/29665541/evaluation-of-a-single-extraction-test-to-estimate-the-human-oral-bioaccessibility-of-potentially-toxic-elements-in-soils-towards-more-robust-risk-assessment
#13
S M Rodrigues, N Cruz, L Carvalho, A C Duarte, E Pereira, A G F Boim, L R F Alleoni, P F A M Römkens
Intake of soil by children and adults is a major exposure pathway to contaminants including potentially toxic elements (PTEs). However, only the fraction of PTEs released in stomach and intestine are considered as bioaccessible and results from routine analyses of the total PTE content in soils, therefore, are not necessarily related to the degree of bioaccessibility. Experimental methods to determine bioaccessibility usually are time-consuming and relatively complicated in terms of analytical procedures which limits application in first tier assessments...
April 13, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/29652647/prevalence-and-predictors-of-ptsd-among-a-college-sample
#14
Shannon E C Usack, Terrell A Hicks, Jessica Bourdon, Christina M Sheerin, Cassie M Overstreet, Kenneth S Kendler, Danielle M Dick, Ananda B Amstadter
OBJECTIVE: This study examined the prevalence and correlates of probable posttraumatic stress disorder (PTSD) in freshman entering college and prospective associations of probable PTSD with additional outcomes. PARTICIPANTS: 2,310 students with data collected from Fall 2014 through Spring 2015. METHODS: Incoming freshman completed a survey assessing for relevant variables at the beginning of fall semester and during the spring semester. RESULTS: Seventy percent of the sample endorsed experiencing at least one potentially traumatic event (PTE)...
April 13, 2018: Journal of American College Health: J of ACH
https://www.readbyqxmd.com/read/29614840/detection-of-metallothionein-in-javanese-medaka-oryzias-javanicus-using-a-scfv-immobilized-protein-chip
#15
Euiyeon Lee, Hyunjin Jeon, Chungwon Kang, Seonock Woo, Seungshic Yum, Youngeun Kwon
Environmental pollution by various industrial chemicals and biological agents poses serious risks to human health. Especially, marine contamination by potentially toxic elements (PTEs) has become a global concern in recent years. Many efforts have been undertaken to monitor the PTE contamination of the aquatic environment. However, there are few approaches available to assess the PTE exposure of aquatic organisms. In this research, we developed a strategy to evaluate the heavy metal exposure of marine organisms, by measuring the expression levels of metallothionein protein derived from Oryzias javanicus (OjaMT)...
April 2, 2018: Sensors
https://www.readbyqxmd.com/read/29609147/the-clinical-characteristics-of-posttraumatic-epilepsy-following-moderate-to-severe-traumatic-brain-injury-in-children
#16
Amit Keret, Moatasim Shweiki, Odeya Bennett-Back, Fadia Abed-Fteiha, Israel Matoth, Yigal Shoshan, Mony Benifla
PURPOSE: Children with traumatic brain injury (TBI) are at increased risk of posttraumatic epilepsy (PTE); the risk increases according to TBI severity. We examined the long-term incidence and risk factors for developing PTE in a cohort of children hospitalised at one medical centre with moderate or severe TBI. METHODS: Moderate brain injury was classified as Glasgow Coma Score on Arrival (GCSOA) of 9-13, and severe brain injury as GCSOA ≤8. We collected demographics and clinical data from medical records and interviewed patients and parents at 5-11 years following the TBI event...
March 20, 2018: Seizure: the Journal of the British Epilepsy Association
https://www.readbyqxmd.com/read/29599915/pertuzumab-trastuzumab-and-eribulin-mesylate-therapy-for-previously-treated-advanced-her2-positive-breast-cancer-a-feasibility-study-with-analysis-of-biomarkers
#17
Yasutaka Tono, Mikiya Ishihara, Yoshihiro Miyahara, Satoshi Tamaru, Hiroyasu Oda, Yoshiki Yamashita, Isao Tawara, Hiroaki Ikeda, Hiroshi Shiku, Toshiro Mizuno, Naoyuki Katayama
The standard treatment for advanced human epidermal growth factor receptor 2 (HER2)-positive breast cancer is the triple combination of pertuzumab, trastuzumab and docetaxel, but some patients cannot tolerate taxane. To explore a non-taxane triple therapy, we conducted a feasibility study of pertuzumab, trastuzumab and eribulin mesylate (PTE) therapy for previously treated advanced HER2-positive breast cancer with analyses of quality of life and biomarkers. Ten patients were enrolled, two of whom had a history of docetaxel allergy...
March 13, 2018: Oncotarget
https://www.readbyqxmd.com/read/29588942/management-of-post-traumatic-epilepsy-an-evidence-review-over-the-last-5-years-and-future-directions
#18
Loretta Piccenna, Graeme Shears, Terence J O'Brien
Post-traumatic epilepsy (PTE) is a relatively underappreciated condition that can develop as a secondary consequence following traumatic brain injury (TBI). The aim of this rapid evidence review is to provide a synthesis of existing evidence on the effectiveness of treatment interventions for the prevention of PTE in people who have suffered a moderate/severe TBI to increase awareness and understanding among consumers. Electronic medical databases (n = 5) and gray literature published between January 2010 and April 2015 were searched for studies on the management of PTE...
June 2017: Epilepsia Open
https://www.readbyqxmd.com/read/29582200/pig-testis-extract-augments-adiponectin-expression-and-secretion-through-the-peroxisome-proliferator-activated-receptor-signaling-pathway-in-3t3-l1-adipocytes
#19
Keishi Kadooka, Mikako Sato, Takashi Matsumoto, Satoru Kuhara, Yoshinori Katakura, Tatsuya Fujimura
Adiponectin is a key molecule whose upregulation may ameliorate symptoms of type 2 diabetes mellitus and disorders of lipid metabolism. Several plant-derived components have been shown to enhance adiponectin secretion; however, there have been no reports on the effects of animal-derived products. Therefore, in the current study, we investigated whether hot-water extracts of specific livestock by-products induce the expression of adiponectin in mouse 3T3-L1 adipocytes. Out of the 11 extracts tested, pig testis extract (PTE) was found to enhance adiponectin expression and secretion by 3T3-L1 cells...
March 26, 2018: Cytotechnology
https://www.readbyqxmd.com/read/29567613/ecological-and-health-risk-assessment-of-potentially-toxic-elements-in-the-major-rivers-of-pakistan-general-population-vs-fishermen
#20
Javed Nawab, Sardar Khan, Wang Xiaoping
Large amounts of potentially toxic elements (PTEs) have, and continue to be, released into the freshwater ecosystems of Pakistan. However, there is limited information available on the ecological risk of PTEs from sediments and fish consumption, for both the general population and fishermen, at the national scale in Pakistan. In this study, water, sediments and fish samples were collected from major rivers (Chenab, Upper Indus, Lower Indus and Kabul) across Pakistan and analyzed through Inductively Coupled Plasma Mass Spectrometer (ICP-MS), Inductively Coupled Plasma Atomic Emission Spectroscopy ICP-AES and Atomic Fluorescence Spectrometry (AFS), respectively...
March 14, 2018: Chemosphere
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