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https://www.readbyqxmd.com/read/27910250/a-large-%C3%AF-extended-carbon-nanoring-based-on-nanographene-units-bottom-up-synthesis-photophysical-properties-and-selective-complexation-with-fullerene-c70
#1
Dapeng Lu, Guilin Zhuang, Haotian Wu, Song Wang, Shangfeng Yang, Pingwu Du
Herein we report the organoplatinum-mediated bottom-up synthesis, characterization, and properties of a novel large π-extended carbon nanoring based on a nanographene hexa-peri-hexabenzocoronene (HBC) building unit. This tubular structure can be considered as an example of the longitudinal extension of the cycloparaphenylene scaffold to form a large π-extended carbon nanotube (CNT) segment. The cyclic tetramer of a tetramesityl HBC ([4]CHBC) was synthesized by the reaction of a 2,11-diborylated hexa-peri-hexabenzocoronene with a platinum complex, followed by reductive elimination...
December 2, 2016: Angewandte Chemie
https://www.readbyqxmd.com/read/27890764/spontaneous-spinal-epidural-hematoma-a-study-of-55-cases-focused-on-the-etiology-and-treatment-strategy
#2
Jiaxing Yu, Jiang Liu, Chuan He, Liyong Sun, Sishi Xiang, Yongjie Ma, Lisong Bian, Tao Hong, Jian Ren, Pengyu Tao, Jingwei Li, Guilin Li, Feng Ling, Hongqi Zhang
BACKGROUND: Spontaneous spinal epidural hematoma (SSEH) is a rare neurological emergency of the spinal cord. Its etiology and treatment strategy remain controversial. This study aimed to evaluate a significant cause of SSEH and to discuss the treatment strategy according to the clinical outcomes of patients in two institutions. METHODS: Fifty-five cases of SSEH treated at our institutions between February 2002 and February 2016 were retrospectively analyzed. RESULT: The mean age of the first SSEH onset was 31...
November 24, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27871745/the-effect-of-dissolved-oxygen-concentration-do-on-oxygen-diffusion-and-bacterial-community-structure-in-moving-bed-sequencing-batch-reactor-mbsbr
#3
Yongfeng Cao, Chaosheng Zhang, Hongwei Rong, Guilin Zheng, Limin Zhao
The effect of dissolved oxygen concentration (DO) on simultaneous nitrification and denitrification was studied in a moving bed sequencing batch reactor (MBSBR) by microelectrode measurements and by real-time PCR. In this system, the biofilm grew on polyurethane foam carriers used to treat municipal sewage at five DO concentrations (1.5, 2.5, 3.5, 4.5 and 5.5 mg/L). The results indicated that the MBSBR exhibited good removal of chemical oxygen demand (92.43%) and nitrogen (83.73%) when DO concentration was 2...
January 1, 2017: Water Research
https://www.readbyqxmd.com/read/27864704/a-clinicopathologic-study-of-extraventricular-neurocytoma
#4
Li Xu, Zhaolian Ouyang, Junmei Wang, Zhaoxia Liu, Jingyi Fang, Jiang Du, Yanjiao He, Guilin Li
In 2007, extraventricular neurocytoma was classified as a separate entity among glioneuronal tumors. However, extraventricular neurocytoma is not fully understood and may be misdiagnosed. Here, we describe the clinical and pathological features, prognoses, and treatments of 13 extraventricular neurocytoma cases, and compare their immunophenotypes with those of oligodendroglioma, diffuse astrocytoma, and ependymoma. Six typical and 7 atypical cases comprised the 13 extraventricular neurocytoma cases. Histological features included oligodendroglioma-like perinuclear halo, neuropil-like matrix, ganglion or ganglioid cells, perivascular pseudorosettes, vessel hyalinization, calcifications, and myxoid degeneration...
November 18, 2016: Journal of Neuro-oncology
https://www.readbyqxmd.com/read/27863772/the-evolution-of-crop-cultivation-and-paleoenvironment-in-the-longji-terraces-southern-china-organic-geochemical-evidence-from-paleosols
#5
Yongjian Jiang, Shijie Li, Wei Chen, Desuo Cai, Yan Liu
The Longji ancient agricultural terraces in the Longji Mountain area (Guilin, southern China), which still remain in use, are famous for their magnificent terraced landscape with a mix of ecosystem and human inhabitation. Previous research has revealed the genesis and preliminary paleoenvironmental record of the agricultural terraces, but little is known about variations in crop cultivation over time. In this study, organic geochemical analyses and radiocarbon dating of an aggradational cultivated soil from a terrace profile were used to explore crop type variation and relevant paleoenvironmental change during the period of cultivation on the Longji Terraces...
November 15, 2016: Journal of Environmental Management
https://www.readbyqxmd.com/read/27846345/systems-biology-for-organotypic-cell-cultures
#6
Sonia Grego, Edward R Dougherty, Francis J Alexander, Scott S Auerbach, Brian R Berridge, Michael L Bittner, Warren Casey, Philip C Cooley, Ajit Dash, Stephen S Ferguson, Timothy R Fennell, Brian T Hawkins, Anthony J Hickey, Andre Kleensang, Michael N J Liebman, Florian Martin, Elizabeth A Maull, Jason Paragas, Guilin Gary Qiao, Sreenivasa Ramaiahgari, Susan J Sumner, Miyoung Yoon
Translating in vitro biological data into actionable information related to human health holds the potential to improve disease treatment and risk assessment of chemical exposures. While genomics has identified regulatory pathways at the cellular level, translation to the organism level requires a multiscale approach accounting for intra-cellular regulation, inter-cellular interaction, and tissue/organ-level effects. Tissue-level effects can now be probed in vitro thanks to recently developed systems of three-dimensional (3D), multicellular, "organotypic" cell cultures, which mimic functional responses of living tissue...
November 14, 2016: ALTEX
https://www.readbyqxmd.com/read/27816715/cd30-expression-and-prognostic-significance-in-r-epoch-treated-patients-with-diffuse-large-b-cell-lymphoma
#7
Jie Xu, Yasuhiro Oki, Annapurna Saksena, Parth Desai, Pei Lin, Guilin Tang, C Cameron Yin, M James You, Beenu Thakral, L Jeffrey Medeiros, Shaoying Li
A few recent studies investigated the prognostic impact of CD30 expression in diffuse large B cell lymphoma (DLBCL) patients treated with rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone. No study has evaluated the significance of CD30 expression in DLBCL patients treated with rituximab, etoposide, prednisone, vincristine, cyclophosphamide, and doxorubicin (R-EPOCH). In a group of 97 patients with DLBCL and high-risk features who received R-EPOCH induction therapy, we studied CD30 expression by immunohistochemistry using different cutoff values (> 0% and ≥20% of lymphoma cells, respectively) and correlated with prognosis...
November 2, 2016: Human Pathology
https://www.readbyqxmd.com/read/27796092/luminescent-aggregated-copper-nanoclusters-nanoswitch-controlled-by-hydrophobic-interaction-for-real-time-monitoring-of-acid-phosphatase-activity
#8
Yuanyuan Huang, Hui Feng, Weidong Liu, Yingying Zhou, Cong Tang, Hang Ao, Meizhi Zhao, Guilin Chen, Jianrong Chen, Zhaosheng Qian
A reversible luminescence nanoswitch through competitive hydrophobic interaction among copper nanoclusters, p-nitrophenyl and α-cyclodextrin is established, and a reliable real-time luminescent assay for acid phosphatase (ACP) activity is developed on the basis of this luminescence nanoswitch. Stable and intensely luminescent copper nanoclusters (CuNCs) were synthesized via a green one-pot approach. The hydrophobic nature of CuNCs aggregate surface is identified, and further used to drive the adsorption of p-nitrophenol on the surface of CuNCs aggregate due to their hydrophobic interaction...
October 31, 2016: Analytical Chemistry
https://www.readbyqxmd.com/read/27788237/comparison-of-128-slice-low-dose-prospective-ecg-gated-ct-scanning-and-trans-thoracic-echocardiography-for-the-diagnosis-of-complex-congenital-heart-disease
#9
Guilin Bu, Ying Miao, Jingwen Bin, Sheng Deng, Taowen Liu, Hongchun Jiang, Weiping Chen
OBJECTIVE: To compare prospective ECG-gated multi-slice computed tomography (MSCT) and trans-thoracic echocardiography (TTE) in the diagnosis of complex congenital heart disease (CHD). METHODS: This was a prospective study of consecutive patients with complex CHD (age <7 years) treated at a tertiary hospital between May 2013 and May 2015. All patients were imaged with TTE and prospective ECG-gated 128-slice spiral CT in the week before surgery. Effective radiation dose (ED) was calculated from volume CT dose index (CTDIvol) and dose length product (DLP)...
2016: PloS One
https://www.readbyqxmd.com/read/27763653/three-dimensional-conductive-networks-based-on-stacked-sio2-graphene-frameworks-for-enhanced-gas-sensing
#10
Da Huang, Zhi Yang, Xiaolin Li, Liling Zhang, Jing Hu, Yanjie Su, Nantao Hu, Guilin Yin, Dannong He, Yafei Zhang
Graphene is an ideal candidate for gas sensing due to its excellent conductivity and large specific surface areas. However, it usually suffers from sheet stacking, which seriously debilitates its sensing performance. Herein, we demonstrate a three-dimensional conductive network based on stacked SiO2@graphene core-shell hybrid frameworks for enhanced gas sensing. SiO2 spheres are uniformly encapsulated by graphene oxide (GO) through an electrostatic self-assembly approach to form SiO2@GO core-shell hybrid frameworks, which are reduced through thermal annealing to establish three-dimensional (3D) conductive sensing networks...
October 20, 2016: Nanoscale
https://www.readbyqxmd.com/read/27755009/distinguishing-between-hepatosplenic-t-cell-lymphoma-and-%C3%AE-%C3%AE-t-cell-large-granular-lymphocytic-leukemia-a-clinicopathologic-immunophenotypic-and-molecular-analysis
#11
Mariko Yabe, L Jeffrey Medeiros, Sa A Wang, Guilin Tang, Carlos E Bueso-Ramos, Jeffrey L Jorgensen, Govind Bhagat, Weina Chen, Shaoying Li, Ken H Young, Roberto N Miranda
Hepatosplenic T-cell lymphoma (HSTCL) is a rare, aggressive T-cell lymphoma that can be challenging to diagnose. In particular, distinguishing HSTCL from T-cell large granular lymphocytic (T-LGL) leukemia of γδ T-cell receptor (TCR) type is difficult without examination of a splenectomy specimen. In this study, we systematically assessed a series of HSTCL cases for findings reported in the literature as supporting or not supporting the diagnosis of HSTCL. We also compared HSTCL with a group of cases of T-LGL of γδ TCR type...
October 13, 2016: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/27750409/facile-synthesis-of-co9se8-quantum-dots-as-charge-traps-for-flexible-organic-resistive-switching-memory-device
#12
Peng Zhang, Benhua Xu, Cunxu Gao, Guilin Chen, Meizhen Gao
Uniform Co9Se8 quantum dots (CSQDs) were successfully synthesized through a facile solvothermal method. The obtained CSQDs with average size of 3.2 ± 0.1 nm and thickness of 1.8 ± 0.2 nm were demonstrated good stability and strong fluorescence under UV light after being easily dispersed in both of N, N-dimethylformamide (DMF) and deionized water. We demonstrated the flexible resistive switching memory device based on the hybridization of CSQDs and polyvinylpyrrolidone (PVP) (CSQDs-PVP). The device with the Al/CSQDs-PVP/Pt/poly(ethylene terephthalate) (PET) structure represented excellent switching parameters such as high ON/OFF current ratio, low operating voltages, good stability and flexibility...
October 18, 2016: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/27739436/p53-expression-correlates-with-poorer-survival-and-augments-the-negative-prognostic-effect-of-myc-rearrangement-expression-or-concurrent-myc-bcl2-expression-in-diffuse-large-b-cell-lymphoma
#13
Xuan J Wang, L Jeffrey Medeiros, Carlos E Bueso-Ramos, Guilin Tang, Sa Wang, Yasuhiro Oki, Parth Desai, Joseph D Khoury, Roberto N Miranda, Zhenya Tang, Nishitha Reddy, Shaoying Li
In patients with diffuse large B-cell lymphoma, MYC rearrangement (MYC-R), MYC expression, or concurrent expression of MYC and BCL2 is associated with a poorer prognosis. P53 expression also has been shown to confer inferior survival in diffuse large B-cell lymphoma patients, but less is known about the role of P53 expression in those with MYC-R, MYC expression (MYC+), or MYC&BCL2 co-expression (MYC+/BCL2+). We studied P53 expression in 201 patients with untreated de novo diffuse large B-cell lymphoma. Sixty-seven (33%) cases were P53 positive, 56 (28%) had MYC-R (including 17 MYC/BCL2 double hit lymphoma), 86 (45%) were MYC+/BCL2+, and 47 (24%) were positive for both MYC and P53...
October 14, 2016: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/27697683/chloramines-in-a-pilot-scale-water-distribution-system-transformation-of-17%C3%AE-estradiol-and-formation-of-disinfection-byproducts
#14
Guilin He, Cong Li, Feilong Dong, Tuqiao Zhang, Long Chen, Leslie Cizmas, Virender K Sharma
The degradation and transformation products of 17β-estradiol (E2) by chloramines in a pilot-scale water distribution system (WDS) were investigated using varying conditions including multiple mass ratios of chlorine to nitrogen (Cl/N), changing concentrations of chloramines, and different pH and pipe materials. The degradation of E2 was complete in ≤9 h in both deionized water (DW) and in the WDS under studied conditions. When the degradation rate of E2 was compared in WDS and DW, the degradation rate was appreciably greater in the WDS than in the DW at Cl/N mass ratios of 3, 4 and 6...
September 25, 2016: Water Research
https://www.readbyqxmd.com/read/27693203/comparison-of-total-costs-between-internal-fixation-and-hemiarthroplasty-for-displaced-femoral-neck-fractures
#15
Haonan Liu, Liang He, Guilin Zhang, Xiaofeng Gong, Ning Li
BACKGROUND: There is very little information on the costs of different surgeries for displaced femoral neck fractures. This study aimed to compare the costs between internal fixation and hemiarthroplasty (HA) in the treatment of displaced femoral neck fracture. METHOD: A total of 142 patients aged 65 years or older who had been randomized into internal fixation group (n = 70) or HA group (n = 72) were followed for 2 years. Cost data was collected through hospitalization information, cost diary and telephone interview...
September 29, 2016: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/27672717/epigenome-wide-differential-dna-methylation-between-hiv-infected-and-uninfected-individuals
#16
Xinyu Zhang, Amy C Justice, Ying Hu, Zuoheng Wang, Hongyu Zhao, Guilin Wang, Eric O Johnson, Brinda Emu, Richard E Sutton, John H Krystal, Ke Xu
Epigenetic control of human immunodeficiency virus-1 (HIV-1) genes is critical for viral integration and latency. However, epigenetic changes in the HIV-1-infected host genome have not been well characterized. Here, we report the first large-scale epigenome-wide association study of DNA methylation for HIV-1 infection. We recruited HIV-infected (n = 261) and uninfected (n = 117) patients from the Veteran Aging Cohort Study (VACS) and all samples were profiled for 485,521 CpG sites in DNA extracted from the blood...
August 12, 2016: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/27669205/analysis-of-flavonoids-in-rhamnus-davurica-and-its-antiproliferative-activities
#17
Guilin Chen, Xun Li, Flora Saleri, Mingquan Guo
Rhamnus davurica Pall. (R. davurica) has been used as a traditional medicinal herb for many years in China and abroad. It has been well documented as a rich source of flavonoids with diversified structures, which in turn results in far-ranging biological activities, such as anti-inflammation, anticancer, antibacterial and antioxidant activities. In order to further correlate their anticancer potentials with the phytochemical components, the fingerprint profile of R. davurica herb from Dongbei was firstly investigated using HPLC-ESI-MS/MS...
2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27663794/the-interaction-effects-of-risk-factors-for-hypertension-in-adults-a-cross-sectional-survey-in-guilin-china
#18
Jian Yu, Di-Sha Zou, Meng-Ting Xie, Yao Ye, Tian-Peng Zheng, Su-Xian Zhou, Li-Li Huang, Xiao-Ling Liu, Jing-Qiong Xun, Yan Zhou
BACKGROUND: The prevalence of hypertension in adults is increasing each year and has become a main public health issue worldwide. We must consider the impact of both individual factors and interactions among these factors on hypertension in adults. This study was designed to elucidate the clinical and metabolic characteristics of the prevalence of hypertension in adults and to explore the risk factors and interactions among these factors in adults with hypertension. METHODS: We used overall random sampling to conduct a cross-sectional survey of 6660 individuals undergoing a health check from July to November 2012, the subjects were aged 20 to 89 years, including 3480 men and 3180 women...
2016: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/27648301/targeting-the-metabolic-pathway-of-human-colon-cancer-overcomes-resistance-to-trail-induced-apoptosis
#19
Ryan M Carr, Guilin Qiao, Jianzhong Qin, Sundararajan Jayaraman, Bellur S Prabhakar, Ajay V Maker
Colon cancer is a leading cause of cancer-related mortality for which targeted therapy is needed; however, trials using apoptosis-inducing ligand monotherapy to overcome resistance to apoptosis have not shown clinical responses. Since colon cancer cells selectively uptake and rapidly metabolize glucose, a property utilized for clinical staging, we investigated mechanisms to alter glucose metabolism in order to selectively target the cancer cells and to overcome evasion of apoptosis. We demonstrate TRAIL (tumor necrosis factor-related apoptosis-inducing ligand) resistance in the majority of human colon cancers tested and utilize the glucose analog 2-deoxy-d-glucose to sensitize TRAIL-resistant gastrointestinal adenocarcinoma cells, and not normal gastrointestinal epithelial cells, to TRAIL-induced apoptosis through enhanced death receptor 5 expression, downstream modulation of MAPK signaling and subsequent miRNA expression modulation by increasing the expression of miR-494 via MEK activation...
2016: Cell Death Discovery
https://www.readbyqxmd.com/read/27612800/light-output-from-six-battery-operated-dental-curing-lights
#20
Carlos Alberto Kenji Shimokawa, Míriam Lacalle Turbino, Jessie Eudora Harlow, Hannah Louise Price, Richard Bengt Price
Light Curing Units (LCUs) are used daily in almost every dental office to photocure resins, but because the light is so bright, the user is unable to tell visually if there are any differences between different LCUs. This study evaluated the light output from six dental LCUs: Elipar Deep Cure-S (3M ESPE), Bluephase G2 (Ivoclar Vivadent), Translux 2Wave (Heraeus Kulzer), Optilight Prime (Gnatus), Slim Blast (First Medica) and Led.B (Guilin Woodpecker) with a fully charged battery, after 50, and again after 100, 20second light exposures...
December 1, 2016: Materials Science & Engineering. C, Materials for Biological Applications
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