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https://www.readbyqxmd.com/read/28734115/regularized-estimation-in-sparse-high-dimensional-multivariate-regression-with-application-to-a-dna-methylation-study
#1
Haixiang Zhang, Yinan Zheng, Grace Yoon, Zhou Zhang, Tao Gao, Brian Joyce, Wei Zhang, Joel Schwartz, Pantel Vokonas, Elena Colicino, Andrea Baccarelli, Lifang Hou, Lei Liu
In this article, we consider variable selection for correlated high dimensional DNA methylation markers as multivariate outcomes. A novel weighted square-root LASSO procedure is proposed to estimate the regression coefficient matrix. A key feature of this method is tuning-insensitivity, which greatly simplifies the computation by obviating cross validation for penalty parameter selection. A precision matrix obtained via the constrained ℓ1 minimization method is used to account for the within-subject correlation among multivariate outcomes...
July 26, 2017: Statistical Applications in Genetics and Molecular Biology
https://www.readbyqxmd.com/read/28732960/relationships-between-spray-parameters-microstructures-and-ultrasonic-cavitation-erosion-behavior-of-hvof-sprayed-fe-based-amorphous-nanocrystalline-coatings
#2
Lei Qiao, Yuping Wu, Sheng Hong, Jianfeng Zhang, Wei Shi, Yugui Zheng
Fe-based amorphous/nanocrystalline coatings were prepared on the AISI 321 steel substrate by the high-velocity oxygen-fuel (HVOF) thermal spraying technology. The effect of selected parameters (oxygen flow, kerosene flow and spray distance) on the cavitation erosion resistance (denoted as Rc) of the coating were investigated by using the Taguchi method. Statistical tools such as design of experiments (DOE), signal-to-noise (S/N) ratio and analysis of variance (ANOVA) were used to meet the expected objective...
November 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28731526/drug-discovery-and-development-for-rare-genetic-disorders
#3
REVIEW
Wei Sun, Wei Zheng, Anton Simeonov
Approximately 7,000 rare diseases affect millions of individuals in the United States. Although rare diseases taken together have an enormous impact, there is a significant gap between basic research and clinical interventions. Opportunities now exist to accelerate drug development for the treatment of rare diseases. Disease foundations and research centers worldwide focus on better understanding rare disorders. Here, the state-of-the-art drug discovery strategies for small molecules and biological approaches for orphan diseases are reviewed...
July 21, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28731115/the-synthesis-of-cycloalka-b-furans-via-an-au-i-catalyzed-tandem-reaction-of-3-yne-1-2-diols
#4
Wei-Ting Liu, Zheng-Liang Xu, Xue-Qing Mou, Bang-Hong Zhang, Wen Bao, Shao-Hua Wang, Dongjun Lee, Lin-Sheng Lei, Kun Zhang
An Au(i)-catalyzed cyclization/1,2-rearrangement/aromatization cascade of 3-yne-1,2-diols has been successfully realized. This reaction not only provides a new and efficient strategy for the synthesis of substituted cycloalka[b]furan compounds as well as their derivatives, but might also facilitate related biological studies.
July 21, 2017: Organic & Biomolecular Chemistry
https://www.readbyqxmd.com/read/28730779/a-comparative-study-on-postoperative-mortality-prediction-of-sfli-scoring-system-and-child-pugh-classification-in-patients-with-hepatocellular-carcinoma
#5
Jun Zheng, Rong-Chun Xing, Wei-Hong Zheng, Wei Liu, Ru-Cheng Yao, Xiao-Song Li, Jian-Ping Du, Lin Li
PURPOSE: In our previous study, we have established the clinical significance of the SFLI (scoring formula of liver injury), the purpose of this study was to compare the SFLI system and the Child-Pugh grading system in the prediction of postoperative mortality in patients with hepatocellular carcinoma (HCC). METHODS: 114 patients with HCC who underwent surgical treatment were enrolled. According to the requirement of the indicators for the Child-Pugh classification, various indices (including albumin [ALB], total bilirubin [TBIL], prothrombin time [PT], ascites, and hepatic encephalopathy) were considered in these patients before surgery, and then Child-Pugh grading was performed...
May 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/28730099/hallermann-streiff-syndrome-with-bilateral-microphthalmia-pupillary-membranes-and-cataract-absorption
#6
Chun-Li Chen, Jie Peng, Xin-Guo Jia, Zheng-Wei Liu, Pei-Quan Zhao
No abstract text is available yet for this article.
2017: International Journal of Ophthalmology
https://www.readbyqxmd.com/read/28729704/growth-hormone-reverses-dyslipidemia-in-adult-offspring-after-maternal-undernutrition
#7
Wei-Fen Zhu, Sheng-Jie Tang, Zheng Shen, Ying-Min Wang, Li Liang
The abnormal intrauterine milieu of fetal growth retardation could lead to dyslipidemia in adulthood. Studies have shown that growth hormone (GH) therapy in small for gestational age (SGA) children would be beneficial for metabolic parameters. Here we investigated whether GH treatment introduced at adolescent period in SGA could reverse dyslipidemia during later life. SGA rat model was established by using semi-starvation treatment during the whole pregnancy. SGA or appropriate for gestational age (AGA) offspring were assigned to receive GH or normal saline (NS)...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28729627/a-mechanism-based-qstr-model-for-acute-to-chronic-toxicity-extrapolation-a-case-study-of-antibiotics-on-luminous-bacteria
#8
Dali Wang, Yue Gu, Min Zheng, Wei Zhang, Zhifen Lin, Ying Liu
The determination of the chronic toxicity is time-consumed and costly, so it's of great interest to predict the chronic toxicity based on acute data. Current methods include the acute to chronic ratios (ACRs) and the QSTR models, both of which have some usage limitations. In this paper, the acute and chronic mixture toxicity of three types of antibiotics, namely sulfonamides, sulfonamide potentiators and tetracyclines, were determined by a bioluminescence inhibition test. A novel QSTR model was developed for predicting the chronic mixture toxicity using the acute data and docking-based descriptors...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28729048/modified-folfirinox-in-metastatic-pancreatic-cancer-a-prospective-study-in-chinese-population
#9
Xiang Li, Tao Ma, Qi Zhang, Yi-Gang Chen, Cheng-Xiang Guo, Yi-Nan Shen, Pei-Wei Sun, Guo-Gang Li, Shun-Liang Gao, Ri-Sheng Que, Jian-Ying Lou, Ri-Sheng Yu, Ying Yuan, Qi-Chun Wei, Shu-Mei Wei, Yun Zhang, Lei Zheng, Xue-Li Bai, Ting-Bo Liang
FOLFIRINOX chemotherapy has shown remarkable responses in patients with metastatic pancreatic cancer (MPC), and has significantly improved prognosis. However, FOLFIRINOX is currently not frequently applied in China because of its high incidence of adverse events, and there is no recognized optimization for this therapy in Chinese population. Modification of FOLFIRINOX may be better for its acceptance in China. In this study, we evaluated the efficacy and safety of modified-FOLFIRINOX in patients with MPC. A total of 62 MPC patients were treated with modified-FOLFIRINOX (no Fluorouracil bolus, 85% Oxaliplatin and 75% Irinotecan) between April 2014 and April 2017 in our institute...
July 17, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28728930/specific-enrichment-of-glycoproteins-with-polymer-monolith-functionalized-with-glycocluster-grafted-%C3%AE-cyclodextrin
#10
Hai-Jiao Zheng, Jiu-Tong Ma, Wei Feng, Qiong Jia
The low abundance of glycoproteins in complex samples results in the prerequisite role of efficient and selective enrichment of them. In the present work, we designed a new kind of glycosylation poly(hydroxyethyl methacrylate-pentaerythritol triacrylate) monolith functionalized with glycocluster grafted β-cyclodextrin for the enrichment of glycoproteins. The introduced modifiers endowed the monolithic material with enhanced hydrophilicity and surface area, which benefitted to improve the enrichment selectivity and extraction efficiency for glycopeptides...
July 11, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28728388/characterization-of-culturable-yeast-species-associating-with-whole-crop-corn-and-total-mixed-ration-silage
#11
Huili Wang, Wei Hao, Tingting Ning, Mingli Zheng, Chuncheng Xu
Objective: This study aims to investigate the association of yeast species with improved aerobic stability of total mixed ration (TMR) silages with prolonged ensiling, and clarify the characteristics of yeast species and their role during aerobic deterioration. Methods: Whole crop corn (WCC) silages and TMR silages formulated with WCC were ensiled for 7, 14, 28 and 56 d and used for aerobic stability test. Predominant yeast species were isolated from different periods and identified by sequencing analyses of the 26S rRNA gene D1/D2 domain...
June 26, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28728340/screening-of-differential-proteins-of-placenta-tissues-in-patients-with-pre-eclampsia-by-itraq-proteomics-techniques
#12
Wei-Hong Qi, Ming-Yan Zheng, Chao Li, Lin Xu, Jin-E Xu
BACKGROUND: Isotopically labeled relative and absolute quantification (iTRAQ) were applied together with liquid chromatogram-tandem mass spectrometry (LC-MS/MS) technique to screen and differentiate normal tissues and differential proteins of placenta tissue in the pre-eclampsia group, and to seek for a pre-eclampsia biomarker. METHODS: Thirty patients with severe pre-eclampsia (pre-eclampsia group) and 30 patients with normal full-term pregnancy (control group), who were admitted by the Obstetrical Department of The Affiliated Hospital of Qingdao University from December 2014 to June 2015, were collected for this study...
October 2017: Minerva Medica
https://www.readbyqxmd.com/read/28728159/oxamate-enhances-the-anti-inflammatory-and-insulin-sensitizing-effects-of-metformin-in-diabetic-mice
#13
Mu-Chao Wu, Wei-Ran Ye, Yi-Jia Zheng, Shan-Shan Zhang
Metformin (MET) is the first-line drug for treating type 2 diabetes mellitus (T2DM). However, MET increases blood lactate levels in patients with T2DM. Lactate possesses proinflammatory properties and causes insulin resistance (IR). Oxamate (OXA), a lactate dehydrogenase inhibitor, can decrease tissue lactate production and blood lactate levels. This study was conducted to examine the effects of the combination of OXA and MET on inflammation, and IR in diabetic db/db mice. Supplementation of OXA to MET led to lowered tissue lactate production and serum lactate levels compared to MET alone, accompanied with further decreased tissue and blood levels of pro-inflammatory cytokines, along with better insulin sensitivity, beta-cell mass, and glycemic control in diabetic db/db mice...
July 21, 2017: Pharmacology
https://www.readbyqxmd.com/read/28727712/intervertebral-foramen-injection-of-ozone-relieves-mechanical-allodynia-and-enhances-analgesic-effect-of-gabapentin-in-animal-model-of-neuropathic-pain
#14
Wen-Jun Luo, Fan Yang, Fei Yang, Wei Sun, Wei Zheng, Xiao-Liang Wang, Fang-Fang Wu, Jiang-Lin Wang, Jia-Shuang Wang, Su-Min Guan, Jun Chen
BACKGROUND: In a 5-year follow-up study in a hospital in southern China, it was shown that intervertebral foramen (IVF) injection of ozone at the involved segmental levels could significantly alleviate paroxysmal spontaneous pain and mechanical allodynia in patients with chronic, intractable postherpetic neuralgia (PHN) and improve the quality of life. However, so far no proof-of-concept studies in animals have been available. OBJECTIVE: This study was designed to investigate whether IVF ozone has an analgesic effect on animal models of neuropathic and inflammatory pain...
July 2017: Pain Physician
https://www.readbyqxmd.com/read/28726895/a-fluorescence-electrochemical-study-of-carbon-nanodots-cnds-in-bio-and-photoelectronic-applications-and-energy-gap-investigation
#15
Zheng Zeng, Wendi Zhang, Durga M Arvapalli, Brian Bloom, Alex Sheardy, Taylor Mabe, Yiyang Liu, Zuowei Ji, Harish Chevva, David H Waldeck, Jianjun Wei
Carbon nanodots (CNDs) have attracted great attention due to their superior solubility, biocompatibility, tunable photoluminescence, and opto-electronic properties. This work describes a new fluorescence-based spectroelectrochemistry approach to simultaneously study the photoluminescence and wavelength dependent photocurrent of microwave synthesized CNDs. The fluorescence of CNDs shows selective quenching upon a reversible redox couple, ferricyanide/ferrocyanide, reaction during cyclic voltammetry. The CND modified gold slide electrode demonstrates wavelength dependent photocurrent generation during the fluorescence-electrochemical study, suggesting the potential application of CNDs in photoelectronics...
July 20, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28724367/prognostic-significance-of-perigastric-tumor-deposits-in-patients-with-primary-gastric-cancer
#16
Shrestha Anup, Jun Lu, Chao-Hui Zheng, Ping Li, Jian-Wei Xie, Jia-Bin Wang, Jian-Xian Lin, Qi-Yue Chen, Long-Long Cao, Mi Lin, Qian Yu, Ying-Hong Yang, Chang-Ming Huang
BACKGROUND: The presence and the prognostic significance of perigastric tumor deposits (TDs) in primary gastric cancer have not been extensively studied. The aim of this study was to evaluate the prognostic significance perigastric TDs in primary gastric cancer. METHODS: From 2005 to 2010, 1250 patients underwent R0 gastrectomy at the Department of Gastric Surgery, Fujian Medical University Union Hospital, Fuzhou, China. Out of 1250 patients, 132 patients with perigastric TDs were identified...
July 19, 2017: BMC Surgery
https://www.readbyqxmd.com/read/28723213/dual-functional-core-shell-fluorescent-ag2s-carbon-nanostructure-for-selective-assay-of-e-coli-o157-h7-and-bactericidal-treatment
#17
Ning Wang, Xing Wei, An-Qi Zheng, Ting Yang, Ming-Li Chen, Jian-Hua Wang
A dual functional fluorescent core-shell Ag2S@Carbon nanostructure is prepared by a hydrothermally assisted multi-amino synthesis approach with folic acid (FA), polyethylenimine (PEI), and mannoses (Mans) as carbon and nitrogen sources (FA-PEI-Mans-Ag2S nanocomposite shortly as Ag2S@C). The nanostructure exhibits strong fluorescent emission at λex/λem = 340/450 nm with a quantum yield of 12.57 ± 0.52%. Ag2S@C is bound to E. coli O157:H7 via strong interaction with the Mans moiety in Ag2S@C with FimH proteins on the fimbriae tip in E...
March 24, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28722473/distribution-and-diversity-of-twelve-curcuma-species-in-china
#18
Lanyue Zhang, Jingwen Wei, Zhiwen Yang, Feng Chen, Qiqiu Xian, Ping Su, Wanyi Pan, Kun Zhang, Xi Zheng, Zhiyun Du
Genus Curcuma a wild species presents an important source of valuable characters for improving the cultivated Curcuma varieties. Based on the collected germplasms, herbariums, field surveys and other literatures, the ecogeographical diversity of Genus Curcuma and its potential distributions under the present and future climate are analysed by DIVA-GIS. The results indicate Genus Curcuma is distributed over 17 provinces in China, and particularly abundant in Guangxi and Guangdong provinces. The simulated current distributions are close to the actual distribution regions...
July 19, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28722093/-a-multicenter-randomized-controlled-trial-of-wheat-cellulose-particles-in-the-treatment-of-internal-hemorrhoids
#19
Yunhua Peng, Wei Yang, Yehuang Wang, Xiaohua Fan, Xueping Zheng, Juanjuan Gai
OBJECTIVE: To evaluate the efficacy and safety of wheat cellulose particles (testa triticum tricum purify, Fiberform) in the treatment of internal hemorrhoid. METHODS: A multicenter randomized controlled clinical trial was adopted. From October 2015 to July 2016, 60 patients with internal hemorrhoid were enrolled from three medical centers, including Department of Anorectum, Shuguang Hospital of Shanghai University of Traditional Chinese Medicine, Department of Anorectum, The Third Affiliated Hospital of Nanjing University of Chinese Medicine, Department of Anorectum, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine...
July 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28721632/detection-and-characterization-of-three-zoonotic-viruses-in-wild-rodents-and-shrews-from-shenzhen-city-china
#20
Bo Wang, Chun-Lin Cai, Bei Li, Wei Zhang, Yan Zhu, Wei-Hong Chen, Fei Zhuo, Zheng-Li Shi, Xing-Lou Yang
Diverse species of rodents and shrews, which are abundant worldwide, harbor a variety of viruses; some of these are closely related to human viruses and possess zoonotic potential. Previously studies have demonstrated that the mammarenavirus and hantavirus carried by rodents or shrews could cause diseases in human population. To determine the distribution of zoonotic viruses in Shenzhen city, the major city in southern China with a high population density, we analyzed 225 rodents (Rattus norvegicus and Rattus flavipectus) and 196 shrews (Suncus murinus) from urban and rural districts for the presence of mammarenavirus, hantavirus, and hepatitis E virus (HEV) by RT-PCR targeting the conserved regions...
July 17, 2017: Virologica Sinica
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