1,826 Works

Nucleosides and amino acids, isolated from Cordyceps sinensis, protected against cyclophosphamide-induced myelosuppression in mice

Yu Zhang, Jie Liu, Yan Wang, Chengpeng Sun, Wenjia Li, Jianjian Qiu, Yanling Qiao, Fan Wu, Xiaokui Huo, Yue An, Baojing Zhang, Shuangcheng Ma, Jian Zheng & Xiaochi Ma
The material basis of Cordyceps sinensis (Berk.) Sacc has not yet been well understood and natural C. sinensis resources are very rare. The present study aimed to clarify the substance basis and compare the protective effect of natural and artificially-cultivated C. sinensis against cyclophosphamide (CTX)-induced myelosuppression. Both natural and artificially-cultivated C. sinensis effectively improved CTX-induced decrease of peripheral blood counts and hemopoietic growth factors, pathological changes, and apoptosis of bone marrow. Importantly, artificially-cultivated C. sinensis...

Defective autophagy contributes to endometrial epithelial-mesenchymal transition in intrauterine adhesions

Zhenhua Zhou, Huiyan Wang, Xiwen Zhang, Minmin Song, Simin Yao, Peipei Jiang, Dan Liu, Zhiyin Wang, Haining Lv, Ruotian Li, Ying Hong, Jianwu Dai, Yali Hu & Guangfeng Zhao
Intrauterine adhesions (IUA), characterized by endometrial fibrosis, is a common cause of uterine infertility. We previously demonstrated that partial epithelial-mesenchymal transition (EMT) and the loss of epithelial homeostasis play a vital role in the development of endometrial fibrosis. As a pro-survival strategy in maintaining cell and tissue homeostasis, macroautophagy/autophagy, conversely, may participate in this process. However, the role of autophagy in endometrial fibrosis remains unknown. Here, we demonstrated that autophagy is defective in endometria of...

Intercity innovation collaboration and the role of high-speed rail connections: evidence from Chinese co-patent data

Li Yao & Jun Li
This study explores the extent to which changes in transport infrastructure counterbalance pre-existing geographical friction and foster innovation collaboration, using the Chinese high-speed rail (HSR) construction as a quasi-natural experiment. Using a comprehensive dataset of city-pair co-patents from 2005 to 2018, we show that HSR connections significantly increase intercity co-patents, patent quality and collaborative partnerships, and such effects are strongest for city-pairs within 250 km and decrease for longer distances. Moreover, the HSR effect is...

An effective immobilization of β-glucosidases by partly cross-linking enzyme aggregates

Yuefeng Deng, Jie Ouyang, Hu Liu, Jianjun Wang, Yihui Zhu, Ziqian Chen, Chengli Yang, Dali Li & Kefeng Ma
Enzyme immobilization provides ideal operating conditions for enzymes stabilization and sustainable recycling. In this work, as a kind of clay material, montmorillonite (MTL) was chosen for immobilizing the β-glucosidase extracted from Agrocybe aegirit. The immobilized β-glucosidase via partly cross-linking enzyme aggregates (pCLEAs) formed by self-catalysis provided biocatalysts with satisfactory thermal and pH stability. Compared to the glutaraldehyde cross-linked, the immobilized β-glucosidase (β-G-pCLEAs@MTL) exhibited significantly higher immobilization efficiency (IE) and immobilization yield (IY), which were 80.6%...

DNA topoisomerase II alpha promotes the metastatic characteristics of glioma cells by transcriptionally activating β-catenin

Yi Liu, Jun Ma, Jiu-Shan Song, Hai-Ying Zhou, Jing-Hui Li, Cheng Luo, Xin Geng & He-Xiang Zhao
DNA topoisomerase II alpha (TOP2A) reportedly plays a crucial role in several cancers, however, the precise regulatory role of TOP2A in metastatic characteristics of glioma is still poorly understood. Herein, we sought to elucidate the mechanisms by which TOP2A affects the metastatic phenotypes of glioma. We observed that a high level of TOP2A expression was dramatically linked with inferior survival in glioma patients while silencing of TOP2A impaired glioma cell proliferation and aggressiveness. TOP2A was...

DNA topoisomerase II alpha promotes the metastatic characteristics of glioma cells by transcriptionally activating β-catenin

Yi Liu, Jun Ma, Jiu-Shan Song, Hai-Ying Zhou, Jing-Hui Li, Cheng Luo, Xin Geng & He-Xiang Zhao
DNA topoisomerase II alpha (TOP2A) reportedly plays a crucial role in several cancers, however, the precise regulatory role of TOP2A in metastatic characteristics of glioma is still poorly understood. Herein, we sought to elucidate the mechanisms by which TOP2A affects the metastatic phenotypes of glioma. We observed that a high level of TOP2A expression was dramatically linked with inferior survival in glioma patients while silencing of TOP2A impaired glioma cell proliferation and aggressiveness. TOP2A was...

Long non-coding RNA terminal differentiation-induced non-coding RNA regulates cisplatin resistance of choroidal melanoma by positively modulating extracellular signal-regulated kinase 2 via sponging microRNA-19b-3p

Wei Li, Aiqin Nie, Longyu Jin, Yubo Cui, Ning Xie & Gaohua Liang
In the present study, we aimed to investigate the role of long non-coding RNA terminal differentiation-induced non-coding RNA (TINCR) in cisplatin (DDP) resistance of choroidal melanoma (CM) and the potential molecular mechanisms. CM and non-CM tissues were collected from 60 CM patients. DDP-resistant CM cells were obtained by selection with linearly increased DDP treatment. The expression levels of TINCR, microR-19b-3p (miR-19b-3p), and extracellular signal-regulated kinase 2 (ERK-2) were detected by quantitative real-time PCR. Cholecystokinin octapeptide...

AFAP1 antisense RNA 1 promotes retinoblastoma progression by sponging microRNA miR-545-3p that targets G protein subunit beta 1

Wenting Tang, Li Zhang, Jing Li & Yu Guan
The oncogenic role of actin filament-associated protein 1 antisense RNA 1 (AFAP1-AS1) has been reported in retinoblastoma (RB). However, the underlying regulatory mechanisms remain poorly understood. In this study, reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and Western blotting were performed to analyze the expression of AFAP1-AS1, microRNA miR-545-3p, or G protein subunit beta 1 (GNB1). Cell Counting Kit-8 (CCK-8) and Transwell migration assays were used to detect cell proliferation and migration. In addition, caspase-3 activity...

FUS mutations in Asian amyotrophic lateral sclerosis patients: a case report and literature review of genotype-phenotype correlations

Ting Lu, Jie Yang, Lijun Luo & Dongsheng Wei
Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease characterized by progressive weakness and muscular atrophy in the upper or lower limbs, ultimately leading to paralysis and death. Genetic studies have demonstrated that mutation in the gene encoding fused in sarcoma (FUS) is an uncommon cause of ALS. Here, we report a case of a 31-year-old Asian man with ALS with rare onset of dropped-head syndrome. Symptoms, including asymmetric proximal weakness of the upper limbs,...

Primary graft failure following allogeneic hematopoietic stem cell transplantation: risk factors, treatment and outcomes

Juan Chen, Aiming Pang, Yuanqi Zhao, Li Liu, Runzhi Ma, Jialin Wei, Xin Chen, Yi He, Donglin Yang, Rongli Zhang, Weihua Zhai, Qiaoling Ma, Erlie Jiang, Mingzhe Han, Jiaxi Zhou & Sizhou Feng
Graft failure (GF) is an intractable complication of transplantation, which can severely affect the efficacy of the graft; however, the characteristics, incidence, and risk factors of primary GF have not been well described. This study aimed to analyze the risk factors and outcomes of primary GF to swiftly identify high-risk patients for GF. We performed a case-control study with a case-control ratio of 1:4 with 869 patients who underwent allogeneic hematopoietic stem cell transplantation (allo-HSCT)...

Therapeutic targeting of the USP2-E2F4 axis inhibits autophagic machinery essential for zinc homeostasis in cancer progression

Wenjing Xiao, Jianqun Wang, Xiaojing Wang, Shuang Cai, Yanhua Guo, Lin Ye, Dan Li, Anpei Hu, Shikai Jin, Boling Yuan, Yi Zhou, Qilan Li, Qiangsong Tong & Liduan Zheng
Macroautophagy/autophagy is a conserved cellular process associated with tumorigenesis and aggressiveness, while mechanisms regulating expression of autophagic machinery genes in cancers still remain elusive. Herein, we identified E2F4 (E2F transcription factor 4) as a novel transcriptional activator of cytoprotective autophagy crucial for zinc homeostasis in cancer cells. Gain- and loss-of-function studies showed that E2F4 promoted autophagy in a cell cycle-dependent manner, resulting in facilitated degradation of MT (metallothionein) proteins, elevated distribution of Zn2+ within autophagosomes,...

Therapeutic targeting of the USP2-E2F4 axis inhibits autophagic machinery essential for zinc homeostasis in cancer progression

Wenjing Xiao, Jianqun Wang, Xiaojing Wang, Shuang Cai, Yanhua Guo, Lin Ye, Dan Li, Anpei Hu, Shikai Jin, Boling Yuan, Yi Zhou, Qilan Li, Qiangsong Tong & Liduan Zheng
Macroautophagy/autophagy is a conserved cellular process associated with tumorigenesis and aggressiveness, while mechanisms regulating expression of autophagic machinery genes in cancers still remain elusive. Herein, we identified E2F4 (E2F transcription factor 4) as a novel transcriptional activator of cytoprotective autophagy crucial for zinc homeostasis in cancer cells. Gain- and loss-of-function studies showed that E2F4 promoted autophagy in a cell cycle-dependent manner, resulting in facilitated degradation of MT (metallothionein) proteins, elevated distribution of Zn2+ within autophagosomes,...

Structural evolution of palygorskite for reinforcing the performance of polypropylene

Hong Zhang, Wenbo Wang, Jiang Xu, Yushen Lu & Aiqin Wang
Raw palygorskite (RPal) and its structural evolution products (OPal) were modified with silane coupling agent KH-570 to form silanized KRPal and KOPal nanorods, which were used as eco-friendly nanofillers to prepare polypropylene/KRPal (PP/KRPal) and polypropylene/KOPal (PP/KOPal) organic–inorganic composites. Structure characterization results revealed that moderate oxalic acid (OA) leaching process can break Si-O-M bonds (M represents Mg, Al, etc.) of RPal nanorods to produce more active silanol groups, thereby improving the dispersibility, surface reactivity and surface...

Structural evolution of palygorskite for reinforcing the performance of polypropylene

Hong Zhang, Wenbo Wang, Jiang Xu, Yushen Lu & Aiqin Wang
Raw palygorskite (RPal) and its structural evolution products (OPal) were modified with silane coupling agent KH-570 to form silanized KRPal and KOPal nanorods, which were used as eco-friendly nanofillers to prepare polypropylene/KRPal (PP/KRPal) and polypropylene/KOPal (PP/KOPal) organic–inorganic composites. Structure characterization results revealed that moderate oxalic acid (OA) leaching process can break Si-O-M bonds (M represents Mg, Al, etc.) of RPal nanorods to produce more active silanol groups, thereby improving the dispersibility, surface reactivity and surface...

Network pharmacology and in vitro experimental verification to explore the mechanism of Sanhua decoction in the treatment of ischaemic stroke

Wei Zhang, Li Zhang, Wen jun Wang, Shanbo Ma, Mingming Wang, Minna Yao, Ruili Li, Wei wei Li, Xian Zhao, Dongmei Hu, Yi Ding & Jingwen Wang
Stroke is an illness with high morbidity, disability and mortality that presents a major clinical challenge. Sanhua decoction (SHD) has been widely used to treat ischaemic stroke in the clinic. However, the potential mechanism of SHD remains unknown. To elucidate the multitarget mechanism of SHD in ischaemic stroke through network pharmacology and bioinformatics analyses. Network pharmacology and experimental validation approach was used to investigate the bioactive ingredients, critical targets and potential mechanisms of SHD against...

A transcriptomic analysis of neuropathic pain in the anterior cingulate cortex after nerve injury

Yu Zhang, Shiwei Jiang, Fei Liao, Zhifeng Huang, Xin Yang, Yu Zou, Xin He, Qulian Guo & Changsheng Huang
The anterior cingulate cortex (ACC) is a core brain region processing pain emotion. In this study, we performed RNA sequencing analysis to reveal transcriptomic profiles of the ACC in a rat chronic constriction injury (CCI) model. A total of 1628 differentially expressed genes (DEGs) were identified by comparing sham-operated rats with rats of 12 hours, 1, 3, 7, and 14 days after surgery, respectively. Although these inflammatory-related DEGs were generally increased after CCI, different kinetics...

Network pharmacology and in vitro experimental verification to explore the mechanism of Sanhua decoction in the treatment of ischaemic stroke

Wei Zhang, Li Zhang, Wen jun Wang, Shanbo Ma, Mingming Wang, Minna Yao, Ruili Li, Wei wei Li, Xian Zhao, Dongmei Hu, Yi Ding & Jingwen Wang
Stroke is an illness with high morbidity, disability and mortality that presents a major clinical challenge. Sanhua decoction (SHD) has been widely used to treat ischaemic stroke in the clinic. However, the potential mechanism of SHD remains unknown. To elucidate the multitarget mechanism of SHD in ischaemic stroke through network pharmacology and bioinformatics analyses. Network pharmacology and experimental validation approach was used to investigate the bioactive ingredients, critical targets and potential mechanisms of SHD against...

Bioactive polyacetylenes from Bidens pilosa L and their anti-inflammatory activity

Zhi Yan, Zhenshan Chen, Ling Zhang, Xiaoming Wang, Yaowen Zhang & Zhenhua Tian
A new polyacetylenic glucoside together with three known compounds were isolated from the whole herb of Bidens pilosa L. The structure elucidation of these four compounds was employed by combining NMR and HR-MS data as 4-O-β-D-glucopyranosyloxy-1-hydroxy- 6-(E)-tetradecene-8,10,12-triyne (1), 3-O-β-D-glucopyranosyloxy-1-hydroxy-6-(E)-tetradec- ene-8,10,12-triyne (2), 2-O-β-D-glucopyranosyloxy-1-hydroxy-5-(E)-tetradecene-7,9,11-triy- ne (3) and icthyothereol acetate (4). Additionally, bioactivity study showed that these compounds have potential anti-inflammatory activity. This study has certain guiding significance for the development and utilisation of polyacetylene compounds in Bidens...

Hyperthermia promotes exosome secretion by regulating Rab7b while increasing drug sensitivity in adriamycin-resistant breast cancer

Di Xu, Wen-Juan Tang, Yi-Zhi Zhu, Zhen Liu, Kai Yang, Ming-Xing Liang, Xiu Chen, Yang Wu, Jin-Hai Tang & Wei Zhang
To investigate the mechanism through which hyperthermia promotes exosome secretion and drug sensitivity in adriamycin-resistant breast cancer. We first evaluated the effect of hyperthermia on adriamycin-resistant breast cancer viability and used transmission electron microscopy, nanoparticle tracking analysis, and a bicinchoninic acid kit to validate the effect of hyperthermia on exosome secretion. The effective targeting molecules and pathways changed by hyperthermia were explored by RNA microarray and verified in vitro. The adriamycin-resistant MCF-7/ADR cells co-incubated with...

The association between histological prostatitis and benign prostatic hyperplasia: a single-center retrospective study

Jinze Li, Yunxiang Li, Dehong Cao, Yin Huang, Lei Peng, Chunyang Meng & Qiang Wei
To investigate the relationship between histological prostatitis (HP) and clinical parameters related to benign prostatic hyperplasia (BPH) in male. The clinical data of 196 BPH patients who underwent transurethral resection of the prostate were collected. According to the results of hematoxylin-eosin (H&E) staining of prostate tissue, patients were divided into two groups: BPH with HP group and BPH without HP group. Differences in acute urinary retention (AUR), prostate volume (PV), serum sex hormones, lower urinary...

The Effect of the Acidic Gas Pollutant on Wool Keratin Fiber Structure

Zhe Jiang, Rubing Bai, Jinfang Zhang, Ende Li, Yifan Cui, Ning Zhang, Nan Zhang & Qiang Wang
Increase in air pollution caused by acidic gases, such as nitrogen dioxide, call for the need to study potential effects on the structure of textile materials. Wool is a natural protein fiber which is easily damaged due to rich reaction positions and cross-linked bonds in the fiber. This study reports, for the first time, effect of nitrogen dioxide, as a model acid gas pollutant, on the structure of wool. On the macro level, wool fabric...

Protective effect of valerian extract capsule (VEC) on ethanol- and indomethacin-induced gastric mucosa injury and ameliorative effect of VEC on gastrointestinal motility disorder

Yuan Feng, Wan Dai, Junyu Ke, Yong Cui, Shuang Li, Jingjing Ma, Wenfeng Guo, Gang Chen, Ning Li & Yanwu Li
Valerian extract capsule (VEC) is an effective Chinese patent medicine used for gastrointestinal (GI) diseases. To investigate the detailed pharmacological activity for VEC clinical effects in GI diseases. Sprague-Dawley rats were divided into six groups: control, model, and drug-treated (VEC-L, VEC-M, VEC-H, and teprenone). Rats were orally administered VEC (124, 248, 496 mg/kg) and teprenone (21.43 mg/kg) for 3 consecutive days. After 1 h, the five groups (except the control group) were orally given ethanol...

Design, synthesis, biological evaluation and molecular docking studies of novel pleuromutilin derivatives containing nitrogen heterocycle and alkylamine groups

Qi Wang, Jie Liu, Zi-Dan Zhou, Ke-Xin Zhou, Fei Li, Qi-Wen Zhang, Shou-Kai Wang, Wei Wang, Zhen Jin & You-Zhi Tang
A series of pleuromutilin derivatives containing alkylamine and nitrogen heterocycle groups were designed and synthesised under mild conditions. The in vitro antibacterial activity of these semisynthetic derivatives against four strains of Staphylococcus aureus (MRSA ATCC 43300, S.aureus ATCC 29213, S.aureus AD3, and S.aureus 144) were evaluated by the broth dilution method. Compound 13 was found to have excellent antibacterial activity against MRSA (MIC = 0.0625 μg/mL). Furthermore, compound 13 was further studied by the time-killing...

Bootstrapping Extreme Value Estimators

Laurens de Haan & Chen Zhou
This article develops a bootstrap analogue of the well-known asymptotic expansion of the tail quantile process in extreme value theory. One application of this result is to construct confidence intervals for estimators of the extreme value index such as the Probability Weighted Moment (PWM) estimator. For the peaks-over-threshold method, we show the bootstrap consistency of the confidence intervals. By contrast, the asymptotic expansion of the quantile process of the bootstrapped block maxima does not lead...

Additional file 2 of A CT-based nomogram for predicting the risk of adenocarcinomas in patients with subsolid nodule according to the 2021 WHO classification

Qilong Song, Biao Song, Xiaohu Li, Bin Wang, Yuan Li, Wu Chen, Zhaohua Wang, Xu Wang, Yongqiang Yu, Xuhong Min & Dongchun Ma
Additional file 2: Supplemental Table 2. The kappa coefficients of categorical variables between three radiologists.

Registration Year

  • 2022
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  • Text
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Affiliations

  • West China Hospital of Sichuan University
    1,826
  • Chinese Academy of Medical Sciences & Peking Union Medical College
    1,209
  • Sichuan University
    1,191
  • Shanghai Jiao Tong University
    1,144
  • Zhejiang University
    1,120
  • Capital Medical University
    1,034
  • Fudan University
    1,007
  • Nanjing Medical University
    970
  • Sun Yat-sen University
    897
  • Chinese Academy of Sciences
    874