1,341 Works

Long-term follow-up of Helicobacter pylori reinfection and its risk factors after initial eradication: a large-scale multicentre, prospective open cohort, observational study

Yong Xie, Conghua Song, Hong Cheng, Canxia Xu, Zhenyu Zhang, Jiangbin Wang, Lijuan Huo, Qin Du, Jianming Xu, Ye Chen, Xiaomei Zhang, Guoxin Zhang, Guibin Yang, Xiuli Zuo, Tao Guo, Yapi Lu, Fen Wang, Xuehong Wang, Kun Zhuang, Shiyao Chen, Wenzhong Liu & Nonghua Lu
Helicobacter pylori (H. pylori) recurrence remains a significant public health concern. The study aimed to assess H. pylori reinfection rate and identify its risk factors in China. This prospective open cohort, observational study was performed at 18 hospitals across 15 provinces in China. Consecutive patients who received the successful initial eradication during 1 January 2012 and 31 December 2018 were eligible for enrolment. H. pylori recurrence was defined as reinfection that occurred at more than...

Evaluation of an enclosed air-lift photobioreactor (ALPBR) for biomass and lipid biosynthesis of microalgal cells grown under fluid-induced shear stress

Ning Ding, Chao Li, Tao Wang, Meijin Guo, Ali Mohsin & Siliang Zhang
An enclosed air-lift photobioreactor (ALPBR) is considered an efficient lab-scale bioreactor for microalgae cell growth and lipid biosynthesis. However, fluid-induced shear stress and mixing are two main factors that affect physiological metabolism in microalgal cell cultures. Herein, a 50-L ALPBR after being designed and manufactured was evaluated for microalgal suspension culture. Moreover, computational fluid dynamics (CFD) simulation was used to characterize the hydrodynamics of ALPBR. Specifically, two model microalgae species Chlorella vulgaris and Chlorella protothecoides...

Genome-wide identification and functional prediction of circular RNAs in response to heat stress in Chinese Holstein cows

Ying Qi, Lin Zhang, Yuemei Guo, Jing Wang, Mingxing Chu, Yiming Zhang, Junfei Guo & Qiuling Li
Heat stress (HS) leads to substantial economic loss of dairy industry each year. The negative effect of HS in dairy cows is becoming one of the more urgent issue due to accelerating side-effects of global warming. Various genes are involved in HS response but the information about the role of noncoding RNAs, especially circular RNAs (circRNAs) is largely unknown. In our study, we aimed to investigate the different expression profile of circRNAs between HS and...

Predictive value of clinical indices for intravenous immunoglobulin resistance and coronary artery lesion in Kawasaki disease

Chuan Wang, Shuran Shao, Kaiyu Zhou, Xiaoliang Liu, Lei Liu, Mei Wu, Yuxin Deng, Hongyu Duan, Yifei Li & Yimin Hua
Context: Intravenous immunoglobulin (IVIG) resistance and coronary artery lesions (CALs) prediction are pivotal topic of interests in Kawasaki disease (KD). However, data on the predictive value of lipid profile for both IVIG resistance and CALs are limited. Purpose: To investigate the predictive validity of lipid profile for IVIG resistance and CALs in KD. Design: Prospective cohort study. Setting: West China Second University Hospital. Patients: A total of 363 KD patients were divided into either the...

Comprehensive analysis of lncRNA expression profiles in cytopathic biotype BVDV-infected MDBK cells provides an insight into biological contexts of host–BVDV interactions

Xuwen Gao, Chao Niu, Zhuo Wang, Shuo Jia, Meijing Han, Yingying Ma, Xueting Guan, Li Wang, Xinyuan Qiao & Yigang Xu
Bovine viral diarrhea virus (BVDV) is the causative agent of bovine viral diarrhea-mucosal disease, which significantly affects the production performance of cattle, causing serious economic losses to the cattle industries worldwide. Up to now, some mechanisms involved in host–BVDV interaction are still not fully understood. The discovery of long non-coding RNAs (lncRNAs) has provided a new perspective on gene regulation in diverse biological contexts, particularly in viral infection and host immune responses. However, little is...

Quasispecies of SARS-CoV-2 revealed by single nucleotide polymorphisms (SNPs) analysis

Rongsui Gao, Wenhong Zu, Yang Liu, Junhua Li, Zeyao Li, Yanling Wen, Haiyan Wang, Jing Yuan, Lin Cheng, Shengyuan Zhang, Yu Zhang, Shuye Zhang, Weilong Liu, Xun Lan, Lei Liu, Feng Li & Zheng Zhang
New SARS-CoV-2 mutants have been continuously indentified with enhanced transmission ever since its outbreak in early 2020. As an RNA virus, SARS-CoV-2 has a high mutation rate due to the low fidelity of RNA polymerase. To study the single nucleotide polymorphisms (SNPs) dynamics of SARS-CoV-2, 158 SNPs with high confidence were identified by deep meta-transcriptomic sequencing, and the most common SNP type was C > T. Analyses of intra-host population diversity revealed that intra-host quasispecies’...

Molecular characterization and function analysis of the rice OsDUF1664 family

Lin Zhang, Dejia Hou, Chunliu Li, Xiaohong Li, Jiangbo Fan, Yilun Dong, Jianqing Zhu, Zhengjian Huang, Zhengjun Xu & Lihua Li
The functions of a large number of genes, including gene families with domains of unknown functions (DUF), still remain unclear. In this study, we analyzed four members of OsDUF1664 (OsDUF1664.1-OsDUF1664.4) in rice Nipponbare. By phylogenetic analysis, DUF1664 members in rice and Arabidopsis were classified into three major groups (I, II, III). Under drought conditions, the expression level of OsDUF1664.3 in rice was significantly elevated. Overexpression of OsDUF1664.3 in Escherichia coli led to a significant enhancement...

Antioxidant and antibacterial activities of 13 ornamental herbaceous peony cultivars: a comparative study with stems and leaves

Lei Liu, Yingdan Yuan & Jun Tao
Paeonia lactiflora is an important ornamental and medicinal plant, but after the flowering period, the above-ground parts of ornamental cultivars are often discarded as waste. When considering the development of medicinal plant resources, attention should be paid to the comprehensive development and utilisation of the plant. In this study, 13 ornamental herbaceous peony cultivars were selected, and their stems and leaves were analysed for antioxidant and antibacterial activities. The results showed that total phenolic content...

Spatiotemporal specificity of correlated DNA methylation and gene expression pairs across different human tissues and stages of brain development

Kangli Wang, Rujia Dai, Yan Xia, Jianghua Tian, Chuan Jiao, Tatiana Mikhailova, Chunling Zhang, Chao Chen & Chunyu Liu
DNA methylation (DNAm) that occurs on promoter regions is primarily considered to repress gene expression. Previous studies indicated that DNAm could also show positive correlations with gene expression. Both DNAm and gene expression profiles are known to be tissue- and development-specific. This study aims to investigate how DNAm and gene expression are coordinated across different human tissues and developmental stages, as well as the biological significance of such correlations. By analyzing 2,239 samples with both...

Additional file 8 of Temporal expression study of miRNAs in the crown tissues of winter wheat grown under natural growth conditions

Menglei Wang, Chenhui Yang, Kangning Wei, Miao Zhao, Liqiang Shen, Jie Ji, Li Wang, Daijing Zhang, Junqiang Guo, Yun Zheng, Juanjuan Yu, Mo Zhu, Haiying Liu & Yong-Fang Li
Additional file 8: Table S5. Sequence of primers used in this study.

Can warnings curb the spread of fake news? The interplay between warning, trust and confirmation bias

Kholekile L. Gwebu, Jing Wang & Ermira Zifla
Despite attempts by social media companies to curb the spread of fake news with warnings flagging news credibility, the effectiveness of such measures remains unclear. Through the lens of the cognitive dissonance theory and individuals’ trust in the news, this study develops a theoretical model that explains why and how warnings affect an individual’s intention to share fake news. The study empirically assesses the predicted relationships using experimental survey data from 382 individuals. The findings...

Can warnings curb the spread of fake news? The interplay between warning, trust and confirmation bias

Kholekile L. Gwebu, Jing Wang & Ermira Zifla
Despite attempts by social media companies to curb the spread of fake news with warnings flagging news credibility, the effectiveness of such measures remains unclear. Through the lens of the cognitive dissonance theory and individuals’ trust in the news, this study develops a theoretical model that explains why and how warnings affect an individual’s intention to share fake news. The study empirically assesses the predicted relationships using experimental survey data from 382 individuals. The findings...

Alleviative effects of foraging exercise on depressive-like behaviors in chronic mild stress-induced ischemic rat model

Xi Tao, Siyuan Wu, Wenjing Tang, Lu Li, Lijun Huang, Danheng Mo, Chujuan Liu, Tao Song, Shuling Wang, Jia Wang & Juan He
Poststroke depression (PSD) is a common complication that seriously affects the functional recovery and prognosis of an individual. As some patients with PSD fail to respond to drug therapy, it is urgent to find a viable alternative treatment. An active exercise program known as foraging exercise (FE), using food as bait, was designed. First, focal ischemia and chronic unpredictable mild stress (CUMS) were used to establish a PSD model in rats. FE was then performed...

Long non-coding RNA ZFAS1 regulates cell proliferation and invasion in cervical cancer via the miR-190a-3p/KLF6 axis

Yuehui Su, Wenjing Hou, Chunyan Zhang, Pengcheng Ji, Rui Hu, Qiongying Zhang, Yao Wang, Panpan Li, Huiping Zhang, Yueyue Chen, Xiaodong Zhang & Mengzhen Zhang
Long non-coding RNA (lncRNA) ZFAS1 (zinc finger antisense 1) was demonstrated to play critical roles in various cancer progression. However, the functions of ZFAS in cervical cancers (CC) are unclear. Human CC cell lines were used for in vitro experiments. RT-qPCR (Real Time Quantitative PCR) was performed to detect the expression of ZFAS1, microRNA-190a-3p (miR-190a-3p) and Kruppel-like factor 6 (KLF6). Cell proliferation, invasion and migration assays were used to investigate biological behaviors of CC cells...

Downregulation of Smad4 expression confers chemoresistance against imatinib mesylate to chronic myeloid leukemia K562 cells

Jiangzhao Zhang, Min Zhang, Yan Liang, Min Liu & Zhiping Huang
Objective: Imatinib mesylate (IM), a tyrosine kinase inhibitor, exhibits clinically prominent effects against chronic myeloid leukemia (CML); however, a few patients have shown resistance to IM treatment, resulting in disease progression. Smad4 is a tumor inhibitor that transduces TGF-β signaling and modulates genomic stability. Previous studies have indicated that decreased Smad4 expression played a bidirectional role in chemosensitivity in many types of cancers. Therefore, this study aims to evaluate the association between IM sensitivity and...

TET2 regulates osteoclastogenesis by modulating autophagy in OVX-induced bone loss

Chen Yang, Huaqiang Tao, Haifeng Zhang, Yu Xia, Jiaxiang Bai, Gaoran Ge, Wenming Li, Wei Zhang, Long Xiao, Yaozeng Xu, Zhirong Wang, Ye Gu, Huilin Yang, Yu Liu & Dechun Geng
Increased bone resorption by osteoclasts after estrogen deficiency is the main cause of postmenopausal osteoporosis. TET2 (tet methylcytosine dioxygenase 2) is a DNA demethylase that regulates cellular function and differentiation potential. Macroautophagy/autophagy maintains cellular homeostasis by recycling unnecessary and damaged organelles. This study revealed that TET2 promoted bone loss in oophorectomized (OVX) mice and that TET2 promoted osteoclast differentiation by regulating autophagy. Tet2 knockdown inhibited autophagy and osteoclast differentiation in vitro. Mechanistically, Tet2 knockdown increased...

Early activity of the Kerguelen Mantle plume: geochronology, geochemistry and Sr-Nd-Pb isotopes of mafic dykes and sills from the Tethyan Himalaya

Zhen Wang, Yuruo Shi, Tianshui Yang, J. Lawford Anderson, Jianxin Zhao, Wenxiao Peng, Chenyang Hou, Huiyi Sun, Weiwei Bian & Yiming Ma
The remnant Comei igneous province in SE Tibet has been recognized as a product of early Kerguelen mantle plume activity. In this paper, we investigate mafic dykes and sills intruded into Lakang Formation in the southeastern Tethyan Himalaya. Based on new whole-rock geochemical, Sr-Nd-Pb isotopic and SHRIMP zircon U-Pb geochronological data, these rocks can be divided into three groups. Group 1 is composed of OIB-like mafic dykes and sills with lower εNd(t) (+1.78-+2.55) and dated...

Molecular evidence to the day length in regulating the short shoot phenomenon during summer in roses (Rosa sp.)

Li Wang, Wan Jiang, Wuhua Zhang, Weitong Chen, Yu Mo, Tong Zhou, Jinzhu Zhang & Daidi Che
The short shoot phenomenon is an important phenotype underlying the economic value of roses – node number can directly affect shoot length. To elucidate the molecular mechanism of how day length affects shoot length, the effect of 8, 10, and 12 h day lengths on node number were studied. The number of nodes between the 8 and 12 h treatment groups significantly differed. Node development in the 12 h treatment group occurred significantly earlier than...

Organic contaminants of emerging concern in global estuaries: Environmental occurrence, fate, and bioavailability

Yan Wu, Ruihe Jin, Qiqing Chen, Xinyu Du, Jing Yang & Min Liu
Organic contaminants of emerging concern (OCECs) originating from assorted sources have attracted increasing attention latterly as most of them are not under routine surveillance or effective regulation but possess persistent, bioaccumulative, and toxic potential. Massive terrestrial inputs and proximity to intense human activities have elevated OCEC contamination in many estuaries. The present review outlines the current knowledge on the environmental occurrence and fate, as well as bioavailability of nine classes of OCECs, i.e., per- and...

LncRNA DLEU2 silencing impedes the migration, invasion and EMT in gastric cancer cell by suppressing PI3K/AKT signaling pathway

Jun Hu, Mingyun Wang, Yang Yang, Yajun Xing & Shuanggen Li
Context: The high expression of long non-coding RNA deleted in lymphocytic leukaemia 2 (lncRNA DLEU2) has been confirmed in gastric cancer (GC). Objective: However, the detailed mechanism concerning its involvement in GC remained unclear, which we aimed to explore in this study. Materials and methods: LncRNA DLEU2 expression in GC was estimated by bioinformatic analysis, and the relationship between the expression of DLEU2 and the clinicopathological characteristics of patients with GC was performed. qRT-PCR was...

LncRNA DLEU2 silencing impedes the migration, invasion and EMT in gastric cancer cell by suppressing PI3K/AKT signaling pathway

Jun Hu, Mingyun Wang, Yang Yang, Yajun Xing & Shuanggen Li
Context: The high expression of long non-coding RNA deleted in lymphocytic leukaemia 2 (lncRNA DLEU2) has been confirmed in gastric cancer (GC). Objective: However, the detailed mechanism concerning its involvement in GC remained unclear, which we aimed to explore in this study. Materials and methods: LncRNA DLEU2 expression in GC was estimated by bioinformatic analysis, and the relationship between the expression of DLEU2 and the clinicopathological characteristics of patients with GC was performed. qRT-PCR was...

Upregulated miR-322-5p regulates cell cycle and promotes cell proliferation and apoptosis by directly targeting Wee1 in mice liver injury

He Tong, Li Wang, Jing Shi, Haowei Jin, Kefan Zhang, Yulong Bao, Yongshuai Wu, Yipeng Cheng, Pengxia Liu & Changshan Wang
Liver injury from any number of causes (e.g. chemical material, drugs and diet, viral infection) is a global health problem, and its mechanism is not clearly understood. MicroRNAs (miRNAs) expression profiling is gaining popularity because miRNAs, as key regulators in gene expression networks, can influence many biological processes and have also shown promise as biomarkers for disease. Previous studies reported the regulation effects of miRNAs in liver injury, whereas function and molecular mechanisms of miR-322-5p...

Offshore Island Connection Line: A new perspective of coastal urban development boundary simulation and multi-scenario prediction

Fei He, Jun Yang, Yuqing Zhang, Dongqi Sun, Li Wang, Xiangming Xiao & Jianhong Xia
The urban development boundary (UDB) is a core issue in territorial spatial planning and remains a research focus in urban development. However, in the past, land use simulations of coastal cities have had some limitations. For example, new urban land outside the research boundary could not be effectively simulated, resulting in a large gap between the simulation results and reality. In this study, an artificial neural network (ANN) cellular automata (CA) model based on a...

Optimal Model Averaging of Mixed-Data Kernel-Weighted Spline Regressions

Jeffrey S. Racine, Qi Li, Dalei Yu & Li Zheng
Model averaging has a rich history dating from its use for combining forecasts from time-series models (Bates and Granger, 1969) and presents a compelling alternative to model selection methods. We propose a frequentist model averaging procedure defined over categorical regression splines (Ma, Racine, and Yang, 2015) that allows for mixed-data predictors, as well as non-nested and heteroskedastic candidate models. We demonstrate the asymptotic optimality of the proposed model averaging estimator, and develop a post-averaging inference...

sj-pptx-1-tag-10.1177_17562848221124029 – Supplemental material for ‘FLARE’ of tumor marker in advanced gastric cancer treated with first-line systemic therapy

Fangyuan Zhang, Menglan Zhai, Jinru Yang, Lei Zhao, Zhenyu Lin, Jing Wang, Tao Zhang & Dandan Yu
Supplemental material, sj-pptx-1-tag-10.1177_17562848221124029 for ‘FLARE’ of tumor marker in advanced gastric cancer treated with first-line systemic therapy by Fangyuan Zhang, Menglan Zhai, Jinru Yang, Lei Zhao, Zhenyu Lin, Jing Wang, Tao Zhang and Dandan Yu in Therapeutic Advances in Gastroenterology

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