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Linjun Cheng, Shuai Wang, Zhengyu Gong, Hong Li, Qi Yang, Yeyao Wang
Owing to the vast territory of China and strong regional characteristic of ozone pollution, it's desirable for policy makers to have a targeted and prioritized regulation and ozone pollution control strategy in China based on scientific evidences. It's important to assess its current pollution status as well as spatial and temporal variation patterns across China. Recent advances of national monitoring networks provide an opportunity to insight the actions of ozone pollution. Here, we present rotated empirical orthogonal function (REOF) analysis that was used on studying the spatiotemporal characteristics of daily ozone concentrations...
May 2018: Journal of Environmental Sciences (China)
Keshan Wang, HaiLong Ruan, ZhengShuai Song, Qi Cao, Lin Bao, Di Liu, TianBo Xu, HaiBing Xiao, Cheng Wang, Gong Cheng, JunWei Tong, XianGui Meng, HongMei Yang, Ke Chen, XiaoPing Zhang
BACKGROUND: PLIN3, one of the members of the perilipin family, has been reported to be involved in the formation and accumulation of lipid droplets. However, the expression levels and diagnostic and prognostic value of PLIN3 in renal cell carcinoma (RCC) remain unclear. METHODS: Bioinformatic analysis was used to assess the levels of PLIN3 and the correlation between PLIN3 levels and clinicopathological parameters in renal cancer. The expression levels of PLIN3 were determined in human RCC tissues and cell lines by western blot, immunofluorescence and immunohistochemistry assays...
May 14, 2018: Urologic Oncology
Hao Liu, Jianping Jiang, Qi Gong, Huanbing Tian, Sheng Wang, Juanjuan Zhang, Zhifang Pan, Xiaoying Liu
Objective To study the effect of muscle segment homeodomain homeobox 2 (MSX2) on the expression of enamel matrix protein and the formation of enamel. Methods Immunohistochemical staining was used to detect the expression of MSX2 in mouse tooth embryos and its localization in ameloblasts. The short hairpin RNA (shRNA) of the MSX2 gene was designed and synthesized, and then the annealed double stranded DNA was constructed into the pGMLV-SC5 RNAi lentivirus vector, and finally it was packaged with lentivirus. The lentivirus was used to infect ameloblasts...
March 2018: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
Wei-Qi Xie, Yi-Xian Gong, Kong-Xian Yu
A reaction headspace gas chromatography (HS-GC) technique was investigated for quantitatively analyzing trichloroacetic acid in human urine. This method is on the basis of the decomposition reaction of trichloroacetic acid under high temperature conditions. The carbon dioxide and chloroform formed from the decomposition reaction can be respectively detected by the thermal conductivity detector HS-GC and the flame ionization detector HS-GC. The data showed that the reaction can be completed in 60 min at 90 o C...
May 16, 2018: Biomedical Chromatography: BMC
Jiao Gong, Yuan-Heng Li, Chan-Juan Zhang, Jian Huang, Qi Sun
2-HPTP, a novel thiazolo [4, 5-b] pyridine-based Zn2+ selective fluorescent probe has been synthesized and investigated. This probe exhibited a high selectivity towards Zn2+ over other biologically essential cations such as Na+ , K+ , Ca2+ , or Mg2+ . 2-HPTP formed a 1:1 complex with Zn2+ and showed a fluorescent enhancement with a long emission wavelength red-shift (85 nm) upon complex formation with Zn2+ . The detection limit and association constant were calculated as 3.48 × 10-7 M and 2.40 × 106 M-1 by a fluorescence titration experiment...
August 1, 2018: Talanta
Bo Liu, Jian-Mei Gao, Fei Li, Qi-Hai Gong, Jing-Shan Shi
Gastrodin (GAS), an active constituent extracted from Gastrodia elata Blume, is used to treat ischemic stroke, epilepsy, dizziness, and dementia for centuries in China. This study examined its effects on vascular dementia (VD) and the underlying molecular mechanisms. VD was established by ligation of bilateral common carotid artery occlusion (BCCAO). A total of 7 days after BCCAO surgery, GAS (15, 30, and 60 mg/kg) was orally administered for 28 consecutive days to evaluate therapeutic effects. Cognitive function was tested by the Morris water maze...
2018: Frontiers in Pharmacology
Cheng-Cao Sun, Qun Zhou, Wei Hu, Shu-Jun Li, Feng Zhang, Zhen-Long Chen, Guang Li, Zhuo-Yue Bi, Yong-Yi Bi, Feng-Yun Gong, Tao Bo, Zhan-Peng Yuan, Wei-Dong Hu, Bo-Tao Zhan, Qian Zhang, Qi-Zhu Tang, De-Jia Li
E2F is a group of genes that encode a family of transcription factors (TFs) in higher eukaryotes and participate in cell cycle regulation and DNA synthesis in mammalian cells. Evidence from cell lines, mouse models, and human tissues indicates that TFs are implicated in lung cancer (LC) tumorigenesis. However, the diverse expression patterns and prognostic values of eight E2Fs have yet to be elucidated. In the current study, we examined the transcriptional and survival data of E2Fs in patients with LC from ONCOMINE, GEPIA, Kaplan-Meier Plotter, and cBioPortal databases...
May 11, 2018: Aging
László Tóth, Attila Mándi, Dániel Váradi, Tibor Kovács, Anna Szabados, Attila Kiss-Szikszai, Qi Gong, Haiyan Zhang, Péter Mátyus, Sándor Antus, Tibor Kurtán
Synthesis of racemic hexahydropyrrolo[1,2-a]quinoline derivatives (1-8) was performed by utilizing the Knoevenagel-[1,5]-hydride shift-cyclization domino reaction. Separation of the enantiomers of the chiral products (1-8) was carried out by chiral high-performance liquid chromatography, and online high-performance liquid chromatography-electronic circular dichroism (ECD) spectra were recorded to elucidate the absolute configuration by comparing the experimental and time-dependent density functional theory-ECD spectra obtained at various theoretical levels...
May 12, 2018: Chirality
Qi Cao, Hailong Ruan, Keshan Wang, Zhengshuai Song, Lin Bao, Tianbo Xu, Haibing Xiao, Cheng Wang, Gong Cheng, Junwei Tong, Xiangui Meng, Di Liu, Hongmei Yang, Ke Chen, Xiaoping Zhang
Clear cell renal cell carcinoma (ccRCC) is the most common renal malignancy in adults, the incidence of which continues to increase. The lipid droplet protein perilipin 2 (PLIN2), which was originally considered an RNA transcript, is markedly expressed during adipocyte differentiation. In addition, it has been observed to be elevated in numerous types of cancer, including ccRCC; however, its essential function remains unclear in ccRCC. The present study examined the expression of PLIN2 in ccRCC, and aimed to determine the association between PLIN2 expression and patient survival...
April 26, 2018: International Journal of Oncology
Bin Lian, Jinjun Xia, Xun Yang, Chanjuan Zhou, Xue Gong, Siwen Gui, Qiang Mao, Ling Wang, Pengfei Li, Cheng Huang, Xunzhong Qi, Peng Xie
In the present study, we used a gas chromatography-mass spectrometry-based metabolomics method to evaluate the effects of ketamine on mice hippocampi. Multivariate statistical analysis and ingenuity pathway analysis were then used to identify and explore the potential mechanisms and biofunction of ketamine. Compared with the control (CON) group, 14 differential metabolites that involved amino acid metabolism, energy metabolism, and oxidative stress metabolism were identified. After combination with 2,3-dihydroxy-6-nitro-7-sulfamoyl-benzo[f]quinoxaline-2,3-dione (NBQX) administration, six of the 14 metabolites remained significantly differentially expressed between the ketamine (KET) and KET+NBQX groups, including glycine, alanine, glutamine, aspartic acid, myoinositol, and ascorbate, whereas no difference was found in the levels of the other eight metabolites between the KET and KET+NBQX groups, including phosphate, 4-aminobutyric acid, urea, creatine, L-malic acid, galactinol, inosine, and aminomalonic...
May 8, 2018: Neuroreport
Kun Hu, Qianqian Zhen, Julin Gong, Tianxing Cheng, Linjun Qi, Yinlin Shao, Jiuxi Chen
The first example of the palladium-catalyzed, three-component tandem reaction of 2-aminobenzonitriles, aldehydes, and arylboronic acids has been developed, providing a new approach for one-pot assembly of diverse quinazolines in moderate to good yields. A noteworthy feature of this method is the tolerance of bromo and iodo groups, which affords versatility for further synthetic manipulations. Preliminary mechanistic experiments indicate that this tandem process involves two possible mechanistic pathways for the formation of quinazolines via catalytic carbopalladation of the cyano group...
May 9, 2018: Organic Letters
Heng Wang, Xiaomin Qian, Kun Wang, Ma Su, Wei-Wei Haoyang, Xin Jiang, Robert Brzozowski, Ming Wang, Xiang Gao, Yiming Li, Bingqian Xu, Prahathees Eswara, Xin-Qi Hao, Weitao Gong, Jun-Li Hou, Jianfeng Cai, Xiaopeng Li
Nested concentric structures widely exist in nature and designed systems with circles, polygons, polyhedra, and spheres sharing the same center or axis. It still remains challenging to construct discrete nested architecture at (supra)molecular level. Herein, three generations (G2-G4) of giant nested supramolecules, or Kandinsky circles, have been designed and assembled with molecular weight 17,964, 27,713 and 38,352 Da, respectively. In the ligand preparation, consecutive condensation between precursors with primary amines and pyrylium salts is applied to modularize the synthesis...
May 8, 2018: Nature Communications
Qi Wang, Liang-Gong Liao, Yan-Feng Li
Seminal vesiculoscopy is a new technology in uro-andrology developed in recent 10 years, which is a set of clinical operational techniques for observing the ejaculatory duct, seminal vesicle, ampullar region of the vas deferens and their surrounding structure, determining the cause, location and degree of the disease, and accomplishing such treatment procedures as irrigation, resection, incision, fulguration, hemostasis, expansion, drainage, and removal of hematocele, stones or obstruction in the distal seminal duct region...
November 2017: Zhonghua Nan Ke Xue, National Journal of Andrology
Wenwen Liu, Huan Wang, Xiaokang Li, Yixiang Xu, Jian Zhang, Wei Wang, Qi Gong, Xiaoxia Qiu, Jin Zhu, Fei Mao, Haiyan Zhang, Jian Li
Depression, a severe mental disease, is greatly difficult to treat and easy to induce other neuropsychiatric symptoms, the most frequent one is cognitive impairment. In this study, a series of novel vilazodone-tacrine hybrids were designed, synthesized and evaluated as multitarget agents against depression with cognitive impairment. Most compounds exhibited good multitarget activities and appropriate blood-brain barrier permeability. Specifically, compounds 1d and 2a exhibited excellent 5-HT1A agonist activities (1d, EC50  = 0...
April 18, 2018: Bioorganic & Medicinal Chemistry
Sai Zhang, Jun Diao, Chunmei Qi, Jingjing Jin, Li Li, Xingjuan Gao, Lei Gong, Weiheng Wu
BACKGROUND: The neutrophil to lymphocyte ratio (NLR) is an indicator of systemic inflammation and a prognostic marker in patients with acute coronary syndrome (ACS). This study aims to investigate the value of NLR to predict the in-hospital and long-term prognosis in patients with ST segment elevation myocardial infarction (STEMI) after percutaneous coronary intervention (PCI) by meta-analysis. METHOD: The studies related to the prognosis of NLR and STEMI patients published in the Pubmed, Embase, and Ovid databases before June 2017 were retrieved...
May 2, 2018: BMC Cardiovascular Disorders
Gui Huang, Wenzhang Tian, Meng Qi, Xiangjun Gong, Guangzhao Zhang
Improving the axial resolution for multiparticle three-dimensional (3D) holographic tracking is crucial but challenging. Here we study the impacts of incident light power, uniformity of the illumination as well as image pixel size on the axial tracking resolution for digital holographic microscopy (DHM). We demonstrate that the resolution highly depends on the image pixel size and the uniformity of the illumination. A 3D localization algorithm based on local-intensity-maxima searching and a Gaussian fit to the integrated intensity of the reconstructed lateral images along the axial direction proves a robust strategy to enhance the axial resolution for colloids and bacteria within a wide depth of field over several tens of micrometers...
April 16, 2018: Optics Express
Run-Qi Guo, Geng-Yan Xiong, Kai-Wei Yang, Lei Zhang, Shi-Ming He, Yan-Qing Gong, Qun He, Xue-Ying Li, Zi-Cheng Wang, Zhen-Qing Bao, Xue-Song Li, Kai Zhang, Li-Qun Zhou
INTRODUCTION: Hematuria is the most common symptom of urothelial carcinomas (UC) but is often idiopathic. Cystoscopy is expensive which involves considerable patient discomfort, and conventional urine cytology for noninvasive UC detection and disease monitoring suffers from poor sensitivity. We aim to evaluate the performance of genes selected from a previous study in detecting UC, especially among patients with gross hematuria, as well as upper tract urothelial carcinoma (UTUC) and bladder carcinoma separately, in voided urine samples...
April 26, 2018: Urologic Oncology
Rong Gong, Jianzhao Qi, Pan Wu, You-Sheng Cai, Hongmin Ma, Yang Liu, He Duan, Meng Wang, Zixin Deng, Neil P J Price, Wenqing Chen
Polyoxin (POL) is an unusual peptidyl nucleoside antibiotic, in which peptidyl moiety and nucleoside skeleton are linked by an amide bond. However, their biosynthesis remains poorly understood. Here, we report the deciphering of PolG as an ATP-dependent ligase responsible for the assembly of POL. A polG mutant is capable of accumulating multiple intermediates, including the peptidyl moiety (carbamoylpolyoxamic acid, CPOAA) and the nucleosides skeletons (POL-C and the previously overlooked thymine POL-C). We further demonstrated that PolG employs an ATP-dependent mechanism for amide bond formation, and that the generation of the hybrid nucleoside antibiotic, POL-N, is also governed by PolG...
April 27, 2018: Applied and Environmental Microbiology
Yang Zhang, Yinfang Wu, Hui Qi, Junhai Xiao, Hongwei Gong, Yan Zhang, Enquan Xu, Song Li, Dalong Ma, Ying Wang, Wen Li, Huahao Shen
A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has been fixed in the paper.
April 26, 2018: Scientific Reports
Dan Zhao, Juan Chen, Ya Zhang, Hua-Bao Liao, Zhi-Feng Zhang, Yang Zhuang, Meng-Xian Pan, Jun-Chun Tang, Rui Liu, Yang Lei, Shu Wang, Xing-Ping Qin, Yu-Gong Feng, Yun Chen, Qi Wan
Glycine has been shown to protect against ischemic stroke through various mechanisms. Phosphatase and tensin homolog deleted on chromosome 10 (PTEN) which antagonize Akt-dependent cell survival has been linked to neuronal damage. However, whether glycine has a neuroprotective property intracerebral hemorrhage (ICH) was unknown. This study aimed to determine the protective effect of glycine in rats ICH. Adult male Sprague-Dawley (SD) rats were subjected to left striatum infusion of autologous blood. ICH animals received glycine (0...
April 23, 2018: Biochemical and Biophysical Research Communications
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