2,898 Works

A new dihydroflavone and a new polyacetylene glucoside from Bidens parviflora

Fu-Jie Cai, Chuan-Hou Li, Xiao-Hui Sun, Lu Wang, Jin-Li Tian, Wei Zhao, De-Gang Kong, Qing Liu & Hong-Lei Zhou
A new dihydroflavone, 2(S)-isookanin-4′-methoxy-8-O-β-D-glucopyranoside (1), and a new polyacetylene glucoside, (10S)-tridecane-2E-ene-4,6,8-triyne-1-ol-10-O-β-D-glucopyranoside (2), along with seven known compounds (3–9), were isolated from the herb of Bidens parviflora Willd. The structures of all the extracted compounds were elucidated by HR-ESI-MS, 1 D and 2 D NMR spectra, as well as circular dichroism (CD).

Association between Tumor Necrosis factor-Alpha(TNF-a) polymorphisms and Schizophrenia: an updated meta-analysis

Sidi He, Lei Zhang, Shunying Yu, Wenjuan Yu, Yimin Yu, Jingjing Huang & Huafang Li
Previous studies have explored associations between Tumour Necrosis factor-Alpha (TNF-a) polymorphisms and Schizophrenia. Their results were controversial. We conducted a meta-analysis to clarify the association between TNF-a − 308 G/A(rs1800629), −1031T/C(rs1799964), −863C/A(rs1800630) and −857 C/T (rs1799724) polymorphisms and Schizophrenia. All the studies that investigated the association between TNF-a polymorphisms and Schizophrenia published before 15 October 2020 were included in. The literature were comprehensively searched and identified in 2 English databases and 2 Chinese databases. The...

Network analysis of COVID-19-related PTSD symptoms in China: the similarities and differences between the general population and PTSD sub-population

Fan Yang, Mingqi Fu, Ning Huang, Farooq Ahmed, Muhammad Shahid, Bo Zhang, Jing Guo & Paul Lodder
Background and Objectives: Prevalent Post-traumatic Stress Disorder (PTSD) negatively affected individuals during the COVID-19 pandemic. Using network analyses, this study explored the construct of PTSD symptoms during the COVID-19 pandemic in China to identify similarities and differences in PTSD symptom network connectivity between the general Chinese population and individuals reporting PTSD. Methods: We conducted an online survey recruiting 2858 Chinese adults. PTSD symptoms were measured using the PCL-5 and PTSD was determined according to the...

Optimization, reconstruction and heterologous expression of the gene cluster encoding toluene/o-xylene monooxygenase from Pseudomonas stutzeri in Escherichia coli and its successive hydroxylation of toluene and benzene

Bo Wang, Feng Gao, Jing Xu, Jianjie Gao, Zhenjun Li, Lijuan Wang, Fujian Zhang, Yu Wang, Yongsheng Tian, Rihe Peng & Quanhong Yao
Biological treatment is a cost-effective and environmentally friendly technique for treating toluene. However, this process is limited by the type and quantity of toluene degraders that can be applied to different environments and methods. It is a feasible solution to constructing new genetic engineering organisms for toluene degradation through biotechnology. To facilitate genetic manipulation and improve gene expression, the toluene/o-xylene monooxygenase locus from Pseudomonas stutzeri was reconstructed and artificially synthesized. All six genes were optimized...

Yiguanjian decoction inhibits macrophage M1 polarization and attenuates hepatic fibrosis induced by CCl4/2-AAF

Ying Xu, Wen Xu, Wei Liu, Gaofeng Chen, Shili Jiang, Jiamei Chen, Xun Jian, Hua Zhang, Ping Liu & Yongping Mu
Our previous studies indicated that Yiguanjian decoction (YGJ) has an anti-hepatic-fibrosis effect and could regulate macrophage status. To elucidate the mechanism of YGJ in regulating macrophages. Liver cirrhosis was induced by CCl4 for 12 weeks combined with 2-acetylaminofluorene (2-AAF) for the last 4 weeks in male Wistar rats. YGJ (3.56 mg/kg) orally administered in the last 4 weeks, and SORA (1 mg/kg) as control. In vitro, RAW264.7 cells were treated with lipopolysaccharides (LPSs) to induce...

3D-QSAR and Molecular Docking Analysis for Natural Aurone Derivatives as Anti-Malarial Agents

Ding Luo, Jian-Bo Tong & Yi Feng
Three-dimensional quantitative structure-activity relationships were studied on 35 natural aurone derivatives by the Topomer CoMFA method to establish the 3 D-QSAR models, and exerting potent affections as Qo site inhibitors in cytochrome b activity for anti-malaria. The cross-validated q2 value of the Topmer CoMFA model = 0.539, the non-cross-validated r2 = 0.793, rpred2 = 0.960, which revealed the model has good stability and predictability. The steric and electrostatic field visualization provided by the Topomer CoMFA...

Accumulation and translocation of selenium in a soil–rice system in Guangxi, China

Zhen Wang, Fei Pang & Wei Huang
Selenium (Se) is an essential element for the human body. Humans meet their basic Se requirements primarily through food consumption. The largest Se-rich contiguous area in China is located in the southeast of Guangxi. In this study, the Se accumulation and translocation in the Guangxi rice–soil system was assessed. Organically bound Se (O-Se) was found to be the main type of soil Se (72.5%), and had a good linear relationship with soil total Se (TSe)...

Four new cembranoids from the South China Sea soft coral Sarcophyton trocheliophorum

Lu Ren, Xue Leng, Te Li, Jing Liu, Wei Wang, Xiaojun Yan, Xia Yan & Shan He
Four new cembrane diterpenes, 1,13-di-epi-13-acetoxy launine P (1), 13-oxo-thunbergol (2), isocrassumol B (3) and 7α, 8α-sarcophine (4), together with two known launine P (5) and sarcophytonin B (6), were isolated from the extract of the South China Sea soft coral Sarcophyton trocheliophorum. The structures were elucidated by spectroscopic analysis, ECD analysis and comparison with literature data. All compounds were tested for their antimicrobial activity and antiviral activity. Compounds 1, 2 and 5 were found to...

Soil washing of total petroleum and polycyclic aromatic hydrocarbons from crude oil-contaminated ultisol using aqueous extracts of waterleaf

Nnanake-Abasi O. Offiong, Opeyemi K. Fatunla, Joseph P. Essien, Chaoge Yang & Jun Dong
Ultisols are acidic soils found in humid climates and are known for poor fertility. Crude oil impacted ultisols, therefore, require special treatment measures to account for nutrient loss during treatment. In this paper, we report the utilization of a food waste, aqueous extracts of waterleaf (Talinum triangulare), as a plant-derived surfactant to wash simulated crude oil-contaminated soils. The soils before and after washing were monitored for microbial loads, nutrient parameters, physicochemical characteristics, total petroleum hydrocarbons...

Fetal cardiac geometry and function in pregnancies with well-controlled gestational diabetes mellitus using Fetal HQ

Yunyu Chen, Qin Chen, Yingheng Wu, Haiyu Wang, Qiyun Fan, Wenjia Lei, Rui Zhang, Yongen Liang & Hongying Wang
To determine whether abnormal cardiac shape and ventricular global, transverse, and longitudinal contractility are present in fetuses of women with well-controlled GDM. A prospective observational study was performed on 80 fetuses of women with well-controlled GDM and 90 control fetuses. Using Fetal HQ, a new speckle-tracking technique, cardiac shape, global contractility, transverse contractility, and longitudinal contractility were calculated. The number and percentage of fetuses with z score values below 5th or above 95th were computed....

Long intergenic non-protein coding RNA 1273 confers sorafenib resistance in hepatocellular carcinoma via regulation of methyltransferase 3

Huifang Kong, Jie Sun, Wei Zhang, Huixin Zhang & Hong Li
Hepatocellular carcinoma (HCC) is often diagnosed in patients with advanced disease who are ineligible for curative surgical therapies. Sorafenib is a first-line agent approved for the treatment of advanced HCC. However, the frequent resistance of HCC cells to sorafenib greatly reduces its efficacy. Herein, we describe a novel long non-coding RNA (lncRNA) conferring sorafenib resistance. Long intergenic non-protein coding RNA 1273 (LINC01273) was significantly overexpressed in human HCC and sorafenib-resistant tissues, linking it to poor...

Orientin mediates protection against MRSA-induced pneumonia by inhibiting Sortase A

Li Wang, Shisong Jing, Han Qu, Kai Wang, Yajing Jin, Ying Ding, Lin Yang, Hangqian Yu, Yan Shi, Qianxue Li & Dacheng Wang
Drug-resistant pathogenic Staphylococcus aureus (S. aureus) has severely threatened human health and arouses widespread concern. Sortase A (SrtA) is an essential virulence factor of S. aureus, which is responsible for the covalent anchoring of a variety of virulence-related proteins to the cell wall. SrtA has always been regarded as an ideal pharmacological target against S. aureus infections. In this research, we have determined that orientin, a natural compound isolated from various medicinal plants, can effectively...

Vascular smooth muscle cell-derived hydrogen sulfide promotes atherosclerotic plaque stability via TFEB (transcription factor EB)-mediated autophagy

Zhenzhen Chen, Chenxi Ouyang, Haizeng Zhang, Yuanrui Gu, Yue Deng, Congkuo Du, Changting Cui, Shuangyue Li, Wenjie Wang, Wei Kong, Jingzhou Chen, Jun Cai & Bin Geng
Vascular smooth muscle cells (VSMCs) contribute to plaque stability. VSMCs are also a major source of CTH (cystathionine gamma-lyase)-hydrogen sulfide (H2S), a protective gasotransmitter in atherosclerosis. However, the role of VSMC endogenous CTH-H2S in pathogenesis of plaque stability and the mechanism are unknown. In human carotid plaques, CTH expression in ACTA2+ cells was dramatically downregulated in lesion areas in comparison to non-lesion areas. Intraplaque CTH expression was positively correlated with collagen content, whereas there was...

Expression analysis of the NR5A2 gene and associations between its polymorphisms and reproductive traits in Jiaxing Black sows

Qiangqiang Chen, Jianfeng Cai, Wei Zhang, Lixia Xiao, Guoliang Liu, Haihong Li, Fen Wu, Qianqian Song, Kui Li & Jinzhi Zhang
This study’s aim was to detect NR5A2 expression and explore association between single nucleotide polymorphism (SNP) of the NR5A2 gene with reproductive traits in Jiaxing Black (JXB) sows. The expression analysis showed that the expression level of pig NR5A2 mRNA in the ovary and liver was significantly higher (p < 0.01) compared to other tissues. 10 SNPs were detected in the exons of NR5A2, and five SNPs (g.136706A > T, g.84609G > A, g.136759G >...

Expression analysis of the NR5A2 gene and associations between its polymorphisms and reproductive traits in Jiaxing Black sows

Qiangqiang Chen, Jianfeng Cai, Wei Zhang, Lixia Xiao, Guoliang Liu, Haihong Li, Fen Wu, Qianqian Song, Kui Li & Jinzhi Zhang
This study’s aim was to detect NR5A2 expression and explore association between single nucleotide polymorphism (SNP) of the NR5A2 gene with reproductive traits in Jiaxing Black (JXB) sows. The expression analysis showed that the expression level of pig NR5A2 mRNA in the ovary and liver was significantly higher (p < 0.01) compared to other tissues. 10 SNPs were detected in the exons of NR5A2, and five SNPs (g.136706A > T, g.84609G > A, g.136759G >...

Efficacy and safety of pembrolizumab for treating advanced non-small-cell lung cancer: a meta-analysis of phase II and III randomized controlled trials

Tianyao Gong, Lei Liu, Yufei Liu, Ke Liu, Yang Yang, Liuying Li & Chuantao Zhang
We conducted a meta-analysis to systematically review the efficacy and safety of pembrolizumab for advanced NSCLC. Databases were searched for randomized controlled trials (RCTs) treated with pembrolizumab till July 2021. Seven RCTs and 3988 patients were included. Our analysis suggests that pembrolizumab was more effective at improving PFS (HR, 0.59; 95% CI: 0.43–0.79; p = 0.0005), OS (HR, 0.65; 95% CI: 0.55–0.76; p < 0.00001) and ORR (RR, 1.85; 95% CI: 1.64–2.09; p < 0.00001)...

Trypanosoma evansi evades host innate immunity by releasing extracellular vesicles to activate TLR2-AKT signaling pathway

Ran Wei, Xin Li, Xiaocen Wang, Nan Zhang, Yuru Wang, Xichen Zhang, Pengtao Gong & Jianhua Li
Surra, one of the most important animal diseases with economic consequences in Asia and South America, is caused by Trypanosoma evansi. However, the mechanism of immune evasion by T. evansi has not been extensively studied. In the present study, T. evansi extracellular vesicles (TeEVs) were characterized and the role of TeEVs in T. evansi infection were examined. The results showed that T. evansi and TeEVs could activate TLR2-AKT pathway to inhibit the secretions of IL-12p40,...

Co-delivery of paclitaxel (PTX) and docosahexaenoic acid (DHA) by targeting lipid nanoemulsions for cancer therapy

Bo Li, Tingfei Tan, Weiwei Chu, Ying Zhang, Yuanzi Ye, Shanshan Wang, Yan Qin, Jihui Tang & Xi Cao
Breast cancer is one of the most common types of cancer in female patients with high morbidity and mortality. Multi-drug chemotherapy has significant advantages in the treatment of malignant tumors, especially in reducing drug toxicity, increasing drug sensitivity and reducing drug resistance. The objective of this research is to fabricate lipid nanoemulsions (LNs) for the co-delivery of PTX and docosahexaenoic acid (DHA) with folic acid (FA) decorating (PTX/DHA-FA-LNs), and investigate the anti-tumor activity of the...

Sex difference in lipid levels in first-diagnosed drug-naïve depression patients: A case-control and 12-weeks follow-up study

Rui Yang, Lu Wang, Song Cao, Ming Chen, Chu-Jun Wu, Floyd Silva, Man-Jun Shen, Jin-Dong Chen, Mi-Mi Tang & Bi-Lian Liu
Patients with depression have a high prevalence of developing dyslipidemia. In this study, we aim to investigate the difference of serum lipids, including total cholesterol (TCH), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), and triglycerides (TG), between the depressed patients and healthy controls. Sex differences in lipids and their psychological correlations were also included. The study included 56 healthy controls (males/females = 26/30) and 110 first-diagnosed drug-naïve outpatients (males/females = 35/75). A total of...

Redox-triggered mitoxantrone prodrug micelles for overcoming multidrug-resistant breast cancer

Hongzhi Qiao, Zhenzhu Zhu, Dong Fang, Yuan Sun, Chen Kang, Liuqing Di, Lei Zhang & Yahan Gao
Multidrug resistance (MDR) severely hinders the efficient chemotherapeutic treatments of cancer. d-α-Tocopherol polyethylene 1000 succinate (TPGS) based drug delivery system holds the potential of re-sensitizing resistant cancer cells. In this study, a TPGS prodrug containing both TPGS and mitoxantrone (MTO) via a disulphide bond was synthesised and assembled into micelle (TSMm) with a monodispersed diameter of 46.50 ± 1.12 nm. The disulphide bonds within the micelles could be cleaved in response to a high concentration...

Comparative characterization of mesenchymal stem cells from human dental pulp and adipose tissue for bone regeneration potential

Qiaoqiao Jin, Keyong Yuan, Wenzhen Lin, Chenguang Niu, Rui Ma & Zhengwei Huang
Bone tissue engineering is an area of regenerative medicine that attempts to repair bone defects. Seed cells such as dental pulp stem cells (DPSCs) and adipose tissue-derived stem cells (ADSCs) are two of the most well-characterized cells for bone regeneration because their use involves few ethical constraints and they have the ability to differentiate into multiple cell types, secreting growth factors and depositing mineral. However, bone regeneration ability of these cells remains unclear. This study...

Culture-related grief beliefs of Chinese Shidu parents: Development and psychometric properties of a new scale

Guangyuan Shi, Jun Wen, Xin Xu, Ningning Zhou, Jiani Wang, Yuqing Shi, Han Liu, Jianping Wang & Eva-Maria Stelzer
Background: In China, parents whose only-child dies and who have no living or adopted child are called Shidu parents. Negative thinking is assumed to contribute to the development of emotional problems in bereavement. Because grief cognitions are likely influenced by the concepts of Chinese traditional culture (e.g., family continuation), Shidu parents may hold specific culture-related grief beliefs about themselves or the world, which, in turn, could impede their recovery. Objective: This study developed a questionnaire...

Risk factors associated with COVID-19 infection: a retrospective cohort study based on contacts tracing

Tao Liu, Wenjia Liang, Haojie Zhong, Jianfeng He, Zihui Chen, Guanhao He, Tie Song, Shaowei Chen, Ping Wang, Jialing Li, Yunhua Lan, Mingji Cheng, Jinxu Huang, Jiwei Niu, Liang Xia, Jianpeng Xiao, Jianxiong Hu, Lifeng Lin, Qiong Huang, Zuhua Rong, Aiping Deng, Weilin Zeng, Jiansen Li, Xing Li, Xiaohua Tan … & Wenjun Ma
This study aimed to estimate the attack rates, and identify the risk factors of COVID-19 infection. Based on a retrospective cohort study, we investigated 11,580 contacts of COVID-19 cases in Guangdong Province from 10 January to 15 March 2020. All contacts were tested by RT-PCR to detect their infection of SARS-COV-2. Attack rates by characteristics were calculated. Logistic regression was used to estimate the risk factors of infection for COVID-19. A total of 515 of...

Structural basis of HCoV-19 fusion core and an effective inhibition peptide against virus entry

Huan Sun, Yan Li, Peipei Liu, Chengpeng Qiao, Xiaomin Wang, Lianao Wu, Kefang Liu, Yu Hu, Chao Su, Shuguang Tan, Shumei Zou, Guizhen Wu, Jinghua Yan, George Fu Gao, Jianxun Qi & Qihui Wang
Structural basis of HCoV-19 fusion core and an effective inhibition peptide against virus entry

Smart phase transformation system based on lyotropic liquid crystalline@hard capsules for sustained release of hydrophilic and hydrophobic drugs

Xuejuan Zhang, Yujun Xiao, Zhengwei Huang, Jintian Chen, Yingtong Cui, Boyi Niu, Ying Huang, Xin Pan & Chuanbin Wu
Smart phase transformation systems@hard capsule (SPTS@hard capsule) based on lyotropic liquid crystalline (LLC) were developed for oral sustained release in this study. Doxycycline hydrochloride (DOXY) and meloxicam (MLX) were used as hydrophilic and hydrophobic model drug, respectively. Two systems were added with different additives, that is, gelucire 39/01, PEG 1000 and Tween 80 to adjust their melting point and release profiles. The phase transformation of these systems could be triggered by water as well as...

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  • Jinan University
  • Chinese Academy of Medical Sciences & Peking Union Medical College
  • Sichuan University
  • Fudan University
  • Shanghai Jiao Tong University
  • Sun Yat-sen University
  • Zhejiang University
  • Huazhong University of Science and Technology
  • Chinese Academy of Sciences
  • Capital Medical University