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https://www.readbyqxmd.com/read/28643509/secondary-copper-smelters-as-sources-of-chlorinated-and-brominated-polycyclic-aromatic-hydrocarbons
#1
Rong Jin, Guorui Liu, Minghui Zheng, Xiaoxu Jiang, Yuyang Zhao, Li Li Yang, Xiaolin Wu, Yang Xu
The generation of and extent to which chlorinated and brominated polycyclic aromatic hydrocarbons (Cl/Br-PAHs) are formed and released from secondary copper smelters remain unknown. This field study, to our knowledge, is the first to identify secondary copper smelters as new sources of Cl/Br-PAHs. Mass concentrations of ∑19Cl-PAHs and ∑19Br-PAHs ranged from 5.8 to 271 ng Nm-3 and 0.59 to 52.4 ng Nm-3, respectively. A comparison of Cl/Br-PAH concentrations in stack gas and fly ash from secondary copper smelters indicated that the use of scrap copper as raw material or the addition of coal or heavy oil as reductant may contribute to the elevated formation and emission of Cl/Br-PAHs...
June 23, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28637006/the-effect-of-ca125-on-metastasis-of-ovarian-cancer-old-marker-new-function
#2
Qin Yuan, Jiayin Song, Weiwei Yang, Hongyan Wang, Qianyu Huo, Jie Yang, Xiaoxu Yu, Yunde Liu, Chen Xu, Huijing Bao
CA125 has been used extensively to screen for neoplasms, especially in ovarian cancer. The serum CA125 level can be used as a better prognosis evaluation and it may dynamic monitoring the disease progression. We explored the effect of CA125 on ovarian cancer cell migration and its underlying mechanism. Transwell assays showed that exposure to 0.2 μg/ml or 0.4 μg/ml CA125 for 48 h increased migration of A2780 and OVCAR-3 ovarian cancer cells. This effect of CA125 was blocked addition of 200 ng/ml DKK-1, a Wnt pathway inhibitor...
June 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28633527/molecular-beam-epitaxy-of-highly-crystalline-monolayer-molybdenum-disulfide-on-hexagonal-boron-nitride
#3
Deyi Fu, Xiaoxu Zhao, Yu-Yang Zhang, Linjun Li, Hai Xu, A-Rang Jang, Seong In Yoon, Peng Song, Sock Mui Poh, Tianhua Ren, Zijing Ding, Wei Fu, Tae Joo Shin, Hyeon Suk Shin, Sokrates T Pantelides, Wu Zhou, Kian Ping Loh
Atomically thin molybdenum disulfide (MoS2), a direct-band-gap semiconductor, is promising for applications in electronics and optoelectronics but the scalable synthesis of highly-crystalline film remains challenging. Here we report the successful epitaxial growth of a continuous, uniform, highly-crystalline monolayer MoS2 film on hexagonal boron nitride (h-BN) by molecular beam epitaxy. Atomic force microscopy and electron microscopy studies reveal that MoS2 grown on h-BN primarily consists of two types of nucleation grains (0o aligned and 60o anti-aligned domains)...
June 21, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28632173/gene-expression-profiling-reveals-potential-players-of-left-right-asymmetry-in-female-chicken-gonads
#4
Zhiyi Wan, Yanan Lu, Lei Rui, Xiaoxue Yu, Fang Yang, Chengfang Tu, Zandong Li
Most female birds develop only a left ovary, whereas males develop bilateral testes. The mechanism underlying this process is still not completely understood. Here, we provide a comprehensive transcriptional analysis of female chicken gonads and identify novel candidate side-biased genes. RNA-Seq analysis was carried out on total RNA harvested from the left and right gonads on embryonic day 6 (E6), E12, and post-hatching day 1 (D1). By comparing the gene expression profiles between the left and right gonads, 347 differentially expressed genes (DEGs) were obtained on E6, 3730 were obtained on E12, and 2787 were obtained on D1...
June 20, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28623265/long-sleep-duration-is-an-independent-risk-factor-for-incident-atrial-fibrillation-in-a-chinese-population-a-prospective-cohort-study
#5
Qiaofeng Song, Xiaoxue Liu, Wanning Hu, Wenhua Zhou, Aijuan Liu, Xizhu Wang, Shouling Wu
There is limited information on the relation between sleep duration and incident atrial fibrillation. We aimed to investigate this association in a Chinese population using cohort data from a study in Kailuan. The analysis included 87,693 participants (age range, 18-98 years) free of atrial fibrillation at the baseline survey. Participants were divided into three categories according to self-reported sleep duration: ≤6.0 hours, 7 hours (ref), ≥8.0 hours. Atrial fibrillation diagnosis was made on a standard 12-lead electrocardiogram and via self-reported history...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28622970/congener-specific-determination-of-ultratrace-levels-of-chlorinated-and-brominated-polycyclic-aromatic-hydrocarbons-in-atmosphere-and-industrial-stack-gas-by-isotopic-dilution-gas-chromatography-high-resolution-mass-spectrometry-method
#6
Rong Jin, Guorui Liu, Minghui Zheng, Heidelore Fiedler, Xiaoxu Jiang, Lili Yang, Xiaolin Wu, Yang Xu
Isotopic dilution gas chromatography combined with high resolution mass spectrometry (GC/HRMS) has overwhelming advantages with respect to the accuracy of congener-specific ultratrace analysis of complex persistent organic pollutants (POPs) in environmental matrices. However, an isotopic dilution GC/HRMS method for analysis of chlorinated and brominated polycyclic aromatic hydrocarbons (Cl-PAHs and Br-PAHs) using (13)C-labelled congeners as internal standards has not been established. In this study, a method for identification and quantification of 38 congeners of Cl-PAHs and Br-PAHs in atmosphere and stack gas samples from waste incinerators was developed using the isotopic dilution GC/HRMS technique...
June 10, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28619016/clinical-application-of-a-novel-endoscopic-mask-a-randomized-controlled-multi-center-trial-in-patients-undergoing-awake-fiberoptic-bronchoscopic-intubation
#7
Tianxiao Zou, Zhenling Huang, Xiaoxue Hu, Guangyu Cai, Miao He, Shanjuan Wang, Ping Huang, Bin Yu
BACKGROUND: Awake fiberoptic bronchoscopic tracheal intubation is usually regarded as an effective method in the management of predicted difficult airway. Hypoxia during awake nasal fiberoptic bronchoscopic intubation leads to discontinuation of the procedure, prolonged manipulation time and increased risk of severe complications. The main aim of the study was to test whether the novel endoscopic mask is helpful for hypoxia during the intubation. METHODS: This was a randomized, controlled, multi-center study...
June 15, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/28617484/improved-photocathodic-performance-in-pt-catalyzed-ferroelectric-bifeo3-films-sandwiched-by-a-porous-carbon-layer
#8
Shoulin Gu, Xiaoxue Zhou, Fengang Zheng, Liang Fang, Wen Dong, Mingrong Shen
A porous carbon layer was inserted between a BiFeO3 film and a Pt catalyst for efficient solar water splitting. A photocathodic current density of -235.4 μA cm(-2) at 0 V versus RHE and an onset potential of 1.19 V versus RHE were obtained under 100 mW cm(-2) Xe-lamp illumination.
June 15, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28608448/catalytic-oxidative-trifluoromethoxylation-of-allylic-c-h-bonds-using-a-palladium-catalyst
#9
Guosheng Liu, Xiaoxu Qi, Pinhong Chen
A novel catalytic intermolecular allylic C-H trifluoromethoxylation of alkenes has been developed using a palladium catalyst, in which CsOCF3 was employed as the trifluoromethoxide source and BQ as the oxidant. This reaction provides an efficient route for directly accessing allylic trifluoromethoxy ether derivatives with excellent regioselectivities from terminal alkenes via an allylic C-H bond activation process.
June 13, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28604881/ionic-liquid-electrodeposition-of-strain-released-germanium-nanowires-as-stable-anodes-for-lithium-ion-batteries
#10
Jian Hao, Yu Yang, Jiupeng Zhao, Xusong Liu, Frank Endres, Caixia Chi, Binsheng Wang, Xiaoxu Liu, Yao Li
With the growing demand for portable and wearable electronic devices, it is imperative to develop high performance Li-ion batteries with long life times. Germanium-based materials have recently demonstrated excellent lithium-ion storage ability and are being considered as the most promising candidates for the anodes of lithium-ion batteries. Nevertheless, the practical implementation of Ge-based materials to Li-ion batteries is greatly hampered by the poor cycling ability that resulted from the huge volume variation during lithiation/delithiation processes...
June 12, 2017: Nanoscale
https://www.readbyqxmd.com/read/28603956/activatable-t1-relaxivity-recovery-nanoconjugates-for-kinetic-and-sensitive-analysis-of-matrix-metalloprotease-2
#11
Xianglong Zhu, Hongyu Lin, Lirong Wang, Xiaoxue Tang, Lengceng Ma, Zhong Chen, Jinhao Gao
Sensitive detection of Matrix metalloproteinase 2 (MMP-2, an important cancer marker associated with tumor invasion and metastasis) activity in vitro and at cellular level is of great significance to clinical diagnosis and medical treatment. With unique physical properties, nanoparticles are emerging as a platform to construct conjugates of various biological molecules, which can be expected to generate new types of biosensors. In this work, Fe3O4 NPs were modified with Gd chelates via linking peptides to construct NP-substrate (Fe3O4-pep-Gd) conjugates for kinetic MMP-2 activity assessment in vitro, at cellular level and in vivo...
June 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28602737/identification-and-characterization-of-a-mannose-binding-lectin-from-nile-tilapia-oreochromis-niloticus
#12
Liangliang Mu, Xiaoxue Yin, Jing Liu, Liting Wu, Xia Bian, Yuhong Wang, Jianmin Ye
Mannose-binding lectin (MBL) is a pattern recognition protein that plays an important role in innate immunity capable of activating the lectin pathway of the complement system. In this study, a MBL homologue (OnMBL) was identified from Nile tilapia (Oreochromis niloticus) and characterized at expression and agglutination functional levels. The open reading frame of OnMBL is 687 bp of nucleotide sequence encoding polypeptides of 228 amino acids. The deduced amino acid sequence is highly homology to teleost and similar to mammalian MBL, containing a canonical collagen-like region, a carbohydrate recognition domain and a neck region...
June 7, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28596524/association-between-carotid-plaque-and-cognitive-impairment-in-chinese-stroke-population-the-sos-stroke-study
#13
Anxin Wang, Xiaoxue Liu, Guojuan Chen, Hongjun Hao, Yongjun Wang, Yilong Wang
We aimed to investigate the association between carotid plaques and cognitive impairment among patients with acute ischemic stroke, and to assess key clinical implications. In the Acute Ischemic Stroke Study, patients who received a cognitive testing and underwent complete carotid artery ultrasound scans were included. Cognitive function was measured by the mini-mental state examination. The cross-sectional relationships between cognitive impairment and carotid plaques were evaluated using multivariate logistic regression analysis...
June 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28594379/anti-inflammatory-activities-and-liver-protection-of-alisol-f-and-25-anhydroalisol-f-through-the-inhibition-of-mapk-stat3-and-nf-%C3%AE%C2%BAb-activation-in-vitro-and-in-vivo
#14
Xiaoxu Bi, Pu Wang, Qingjuan Ma, Li Han, Xingbo Wang, Yu Mu, Peipei Guan, Xiaodan Qu, Zhanyou Wang, Xueshi Huang
Alisol F and 25-anhydroalisol F isolated from Alisma orientale, were proved to exhibit anti-inflammatory potential in our previous work. In the current study, the anti-inflammatory effects and action mechanisms of alisol F and 25-anhydroalisol F were investigated in vitro. Moreover, the pharmacological effects of alisol F in lipopolysaccharide (LPS)/d-galactosamine (d-gal)-induced acute liver-injured mice were evaluated. The results demonstrated that alisol F and 25-anhydroalisol F could suppress LPS-induced production of nitric oxide (NO), interleukin-6 (IL-6), tumor necrosis factor alpha (TNF-α), and interleukin-1β (IL-1β), as well as inhibit the mRNA and protein levels of inducible nitric oxide (iNOS) and cyclooxygenase-2 (COX-2)...
June 8, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28590431/food-and-nutrients-intake-in-the-school-lunch-program-among-school-children-in-shanghai-china
#15
Zhenru Huang, Runying Gao, Nadila Bawuerjiang, Yali Zhang, Xiaoxu Huang, Meiqin Cai
This study aimed to evaluate the intake of food and nutrients among primary, middle, and high schools students in Shanghai, and provide recommendations for possible amendments in new school lunch standards of Shanghai. Twenty schools were included in the school lunch menu survey. Of those, seven schools enrolled 5389 students and conducted physical measurement of plate waste and a questionnaire survey. The amount of food and nutrients was compared according to the new China National Dietary Guideline for School Children (2016) and Chinese Dietary Reference Intakes (2013)...
June 7, 2017: Nutrients
https://www.readbyqxmd.com/read/28587366/investigation-of-the-predictive-value-of-speckle-tracking-imaging-for-the-assessment-of-cardiac-function-and-clinical-prognosis-in-patients-with-hypercholesterolemia
#16
Ling Zhang, Xiaoxu Chen
The predictive value of speckle tracking imaging (STI) for the assessment of cardiac function and clinical prognosis in patients with hypercholesterolemia was explored. One hundred forty-seven patients with hypercholesterolemia diagnosed in our hospital and 137 healthy adults from our health examination center over the same period were included in this study. Using STI and color Doppler ultrasound, we carried out follow-up of cardiac function in patients with hypercholesterolemia and statistical analysis based on collected data...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28587349/gut-flora-profiling-and-fecal-metabolite-composition-of-colorectal-cancer-patients-and-healthy-individuals
#17
Xiaoxue Wang, Jianping Wang, Benqiang Rao, Li Deng
Colorectal cancer is one of the most common types of cancer in the world and its morbidity and mortality rates are increasing due to alterations to human lifestyle and dietary habits. The relationship between human gut flora and colorectal cancer has attracted increasing attention. In the present study, a metabolic fingerprinting technique that combined pyrosequencing with gas chromatography-mass spectrometry was utilized to compare the differences in gut flora profiling and fecal metabolites between healthy individuals and patients with colorectal cancer...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28584058/protein-kinase-a-mediated-phosphorylation-of-the-broad-complex-transcription-factor-in-silkworm-suppresses-its-transcriptional-activity
#18
Wenliang Qian, Xiaoxu Gang, Tianlei Zhang, Ling Wei, Xinxin Yang, Zheng Li, Yan Yang, Liang Song, Peng Wang, Jian Peng, Daojun Cheng, Qingyou Xia
The insect-specific transcription factor Broad-Complex (BR-C) is transcriptionally activated by the steroid 20-hydroxyecdysone (20E) and regulates the expression of many target genes involved in insect growth and development. However, although the transcriptional regulation of BR-C proteins has been well studied, how BR-C is regulated at post-transcription and -translation level is poorly understood. To this end, using liquid chromatography-tandem mass spectrometry analysis, we identified residue Ser186 as a phosphorylation site of BR-C in silkworm...
June 5, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28581754/phase-engineering-induced-generation-and-control-of-highly-anisotropic-and-robust-excitons-in-few-layer-res2
#19
Shuyi Wu, Yun Shan, Junhong Guo, Lizhe Liu, Xiaoxu Liu, Xiaobin Zhu, Jinlei Zhang, Jiancang Shen, Shijie Xiong, Xinglong Wu
The anisotropic exciton behavior in two-dimensional materials induced by spin-orbit coupling or anisotropic spatial confinement has been exploited in imaging applications. Herein, we propose a new strategy to generate high-energy and robust anisotropic excitons in few-layer ReS2 nanosheets by phase engineering. This approach overcomes the limitation imposed by the layer thickness, enabling production of visible polarized photoluminescence at room temperature. Ultrasonic chemical exfoliation is implemented to introduce the metallic T phase of ReS2 into the few-layer semiconducting Td nanosheets...
June 15, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28579808/microrna-216a-promotes-the-metastasis-and-epithelial-mesenchymal-transition-of-ovarian-cancer-by-suppressing-the-pten-akt-pathway
#20
Haizhi Liu, Ying Pan, Xiaoxue Han, Jia Liu, Ruiman Li
MicroRNAs, a group of posttranscriptional regulators of numerous genes, are active participators during the development and progression of ovarian cancer (OC). This study confirmed for the first time that miR-216a was gradually increased in normal, benign, borderline, and OC tissues and that its expression was significantly upregulated in all OC cell lines. Analysis of its clinical association demonstrated that elevated expression of miR-216a was associated with lymph node metastasis and advanced FIGO stage and was correlated with the poor survival of OC patients...
2017: OncoTargets and Therapy
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