42 results on '"Xiang-Yu Guo"'
Search Results
2. E2F1-initiated transcription of PRSS22 promotes breast cancer metastasis by cleaving ANXA1 and activating FPR2/ERK signaling pathway
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Lin Song, Hui Li, Ran-Ran Ma, Sen Liu, Guo-Hao Zhang, Xiang-Yu Guo, Rui-Nan Zhao, Xiao-Juan Wu, Kai Zhang, and Peng Gao
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Cytology ,QH573-671 - Abstract
Abstract Breast cancer (BC) is the most common malignant tumor in women worldwide. Metastasis is the main cause of BC-related death. The specific mechanism underlying BC metastasis remains obscure. Recently, PRSS22 was discovered to be involved in tumor development, however, its detailed biological function and regulatory mechanism in BC are unclear. Here, we characterized that PRSS22 expression is upregulated in BC tissues compared with non-tumorous breast tissues. Dual luciferase assays, bioinformatics analyses and chromatin immunoprecipitation (ChIP) assays indicated that transcription factor E2F1 directly binds to the PRSS22 promoter region and activates its transcription. Functionally, upregulation of PRSS22 promoted invasion and metastasis of BC cells in vitro and in vivo, whereas knockdown of PRSS22 inhibited its function. Mechanistically, the combination of PRSS22 and ANXA1 protein in BC cells was first screened by protein mass spectrometry analysis, and then confirmed by co-immunoprecipitation (Co-IP) and western blot assays. Co-overexpression of PRSS22 and ANXA1 could promote BC cell migration and invasion. We further demonstrated that PRSS22 promotes the cleavage of ANXA1 and in turn generates an N-terminal peptide, which initiates the FPR2/ERK signaling axis to increase BC aggressiveness.
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- 2022
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3. Ampelopsis grossedentata improves type 2 diabetes mellitus through modulating the gut microbiota and bile acid metabolism
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Yu-li Hu, Mei Li, Lei Ding, Chuan Peng, You Wu, Wei Liu, Dan Zhao, Ling-ling Qin, Xiang-yu Guo, Li-li Wu, and Tong-hua Liu
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Ampelopsis grossedentata ,Gut microbiota ,Bile acid ,Gluconeogenesis ,“Microbiota-gut-liver” axis ,FXR-FGF15 ,Nutrition. Foods and food supply ,TX341-641 - Abstract
Ampelopsis grossedentata is a flavonoid-rich healthy tea, traditionally used as a Chinese herbal medicine, that effectively treats T2DM. In the present study, we investigated the anti-diabetic effect of total flavonoids extracted from Ampelopsis grossedentata (AGT) and the underlying mechanisms using 16S rDNA sequencing and metabolomics. The results indicated that after AGT treatment for 6 weeks, the body weight, liver index, fasting blood glucose (FBG), OGTT-AUC, and serum lipid levels were reduced, and pathological injuries of the liver improved significantly in ZDF rats. Meanwhile, AGT increased the abundance and diversity of gut microbiota, especially BSH-active bacteria, which reduced T-β-MCA and T-α-MCA levels and further activate FXR and FGF15. The activation of FXR-FGF15 axis inhibited excessive bile acid accumulation and liver gluconeogenesis upon AGT treatment. Taken together, our results suggested that AGT ameliorated glycolipid metabolism disorder via the “microbiota-gut-liver” axis, indicating that AGT may be a potential therapeutic strategy for treating T2DM.
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- 2023
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4. Does a ketogenic diet as an adjuvant therapy for drug treatment enhance chemotherapy sensitivity and reduce target lesions in patients with locally recurrent or metastatic Her-2-negative breast cancer? Study protocol for a randomized controlled trial
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Yan Wang, Ming-Xi Jing, Lei Jiang, Yu-Feng Jia, E. Ying, Hui Cao, Xiang-Yu Guo, and Tao Sun
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Breast cancer ,Ketogenic diet ,Irinotecan, Chemotherapy sensitivity ,Objective response rate ,Randomized controlled trial ,Clinical trial ,Medicine (General) ,R5-920 - Abstract
Abstract Background Recent studies have indicated that a ketogenic diet can be used as an adjuvant therapy to enhance sensitivity to chemotherapy and radiotherapy in cancer patients. However, there are no sufficient data and no consistent international treatment guidelines supporting a ketogenic diet as an adjuvant therapy for metastatic breast cancer. Therefore, this trial was designed to observe whether irinotecan with a ketogenic diet can promote sensitivity to chemotherapy and remit target lesions in locally recurrent or metastatic Her-2-negative breast cancer patients. Methods/design This trial aims to recruit 518 women with locally recurrent or metastatic breast cancer admitted to the Liaoning Cancer Hospital and Institute (Shenyang, China) in northeast China. All patients will be randomly assigned into the combined intervention group (n = 259) or the control group (n = 259), followed by treatment with irinotecan + ketogenic diet or irinotecan + normal diet, respectively. The primary endpoints are sensitivity to irinotecan and the objective response rate of target lesions; the secondary endpoints include quality of life scores (EORTC QLQ-C30), progression-free survival, overall survival time, incidence of adverse events, and cost-effectiveness. The endpoints will be evaluated at baseline (before drug administration), during treatment, 4 weeks after treatment completion, and every 3months (beginning 2 months after treatment completion). Discussion This trial attempts to investigate whether irinotecan treatment with a ketogenic diet for locally recurrent or metastatic breast cancer among women in northeast China can enhance the disease’s sensitivity to chemotherapy and reduce target lesions. Trial registration Chinese Clinical Trial Registry, ID: ChiCTR1900024597 . Registered on 18 July 2019. Protocol Version: 1.1, 24 February 2017.
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- 2020
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5. An Improved Three-Factor Session Initiation Protocol Using Chebyshev Chaotic Map
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Xiang-Yu Guo, Da-Zhi Sun, and Ying Yang
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Authentication ,biometrics ,chaotic map ,key agreement ,security ,smartcard ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
Session Initiation Protocol (SIP) is the most widely used signalling protocol for controlling communication, establishing, maintaining, and terminating sessions on the Internet. However, since sensitive information is often transmitted through open channels, a security authentication scheme is essential. Recently, Islam et al. proposed an authentication scheme for SIP, and argued that the scheme is immune to known attacks. However, we discover that their scheme fails to achieve user anonymity, and it cannot even resist impersonation attack. Therefore, this study proposes an enhanced mutual authentication scheme to eliminate the drawbacks of the scheme proposed by Islam et al. In addition, our proposed scheme is based on extended chaotic map, which avoids computationally expensive elliptic curve point multiplication. Then, we use Burrows-Abadi-Needham logic to prove that the proposed scheme achieves secure mutual authentication, and we use the Real-Or-Random model to analyze the formal security verification of the session key. Finally, we compare the performance and the security features of the proposed scheme with some existing schemes. Therefore, we provide better safety and efficiency than related schemes and the proposed scheme is suitable for SIP.
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- 2020
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6. GAGE7B promotes tumor metastasis and growth via activating the p38δ/pMAPKAPK2/pHSP27 pathway in gastric cancer
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Duan-Bo Shi, Ran-Ran Ma, Hui Zhang, Feng Hou, Xiang-Yu Guo, and Peng Gao
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GAGE7B ,Gastric cancer ,Metastasis ,Growth ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Background Gastric cancer is the second most common cause of cancer-related mortality; thus, the mechanisms underlying tumor metastasis and growth in gastric cancer need to be extensively explored. Methods Differentially expressed genes were examined in gastric cancer samples with lymph node metastasis (LNM) and without LNM using mRNA microarray and RT-qPCR. The effects of G antigen 7B (GAGE7B) on the metastasis, growth, and angiogenesis of gastric cancer were investigated in vitro and in vivo. GAGE7B protein expression was detected by immunohistochemical (IHC) analysis. Microarray, RT-qPCR, and western blot assays were performed to detect downstream target genes of GAGE7B. Dual-luciferase reporter and western blot assays were used to identify miRNAs that could negatively regulate GAGE7B. Results GAGE7B was significantly overexpressed in samples with LNM. High expression levels of GAGE7B were associated with advanced clinical stage and poor patient survival. GAGE7B dramatically enhanced the metastasis, growth, and angiogenesis ability of gastric cancer. GAGE7B was further demonstrated to promote the progression of gastric cancer by activating the p38δ/pMAPKAPK2/pHSP27 pathway. However, the GAGE7B-induced p38δ/pMAPKAPK2/pHSP27 pathway was inactivated by miR-30c, as the expression levels of both GAGE7B and p38δ were found to be directly suppressed by miR-30c. Intriguingly, GAGE7B was found to be a ceRNA for p38δ, as it activated the p38δ/pMAPKAPK2/pHSP27 pathway by competitively binding miR-30c. Conclusions GAGE7B may serve as a prognostic indicator in gastric cancer. GAGE7B significantly promotes gastric cancer progression by upregulating the p38δ/pMAPKAPK2/pHSP27 pathway, but it is negatively regulated by miR-30c. GAGE7B and miR-30c may be potential therapeutic targets in gastric cancer.
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- 2019
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7. Genetic parameters for somatic cell score and production traits in the first three lactations of Chinese Holstein cows
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Fu-ping ZHAO, Gang GUO, Ya-chun WANG, Xiang-yu GUO, Yuan ZHANG, and Li-xin DU
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somatic cell score ,genetic parameters ,Chinese Holstein ,single-parity multi-trait animal model ,multi-trait repeatability animal model ,Agriculture (General) ,S1-972 - Abstract
The objectives of this study were to estimate genetic parameters of lactation average somatic cell scores (LSCS) and examine genetic associations between LSCS and production traits in the first three lactations of Chinese Holstein cows using single-parity multi-trait animal model and multi-trait repeatability animal model. There were totally 273 605 lactation records of Chinese Holstein cows with first calving from 2001 to 2012. Heritability estimates for LSCS ranged from 0.144 to 0.187. Genetic correlations between LSCS and 305 days milk, protein percentage and fat percentage were −0.079, −0.082 and −0.135, respectively. Phenotypic correlation between LSCS and 305 days milk yield was negative (−0.103 to −0.190). Genetic correlation between 305 days milk and fat percentage or protein percentage was highly negative. Genetic correlation between milk fat percentage and milk protein percentage was highly favorable. Heritabilities of production traits decreased with increase of parity, whereas heritability of LSCS increased with increase of parity.
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- 2015
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8. Protocadherin 7 inhibits cell migration and invasion through E-cadherin in gastric cancer
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Hong-Fang Chen, Ran-Ran Ma, Jun-Yi He, Hui Zhang, Xiao-Ling Liu, Xiang-Yu Guo, and Peng Gao
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Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
The protocadherin 7 is a member of the protocadherin family that expressed aberrantly in many types of human cancers. However, its expression, function, and underlying mechanisms are little known in gastric cancer. In this study, we detected protocadherin 7 expression in gastric cancer tissues and non-tumorous gastric mucosa tissues by real-time quantitative polymerase chain reaction and immunohistochemistry. The association of protocadherin 7 expression with the clinicopathological characteristics and the prognosis was subsequently analyzed. MTS ((3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium)) and transwell assays were performed to assess the effect of protocadherin 7 on proliferation, migration, and invasion in gastric cancer cell lines. Moreover, real-time quantitative polymerase chain reaction and western blot were used to detect the expression of epithelial–mesenchymal transition markers. Protocadherin 7 expression was decreased gradiently from normal tissue to gastric cancer, especially in gastric cancer tissue with lymph node metastasis. Low expression of protocadherin 7 was significantly associated with Lauren’s classification ( p = 0.0005), lymph node metastases ( p = 0.0002), and tumor node metastasis stage ( p = 0.0221), as well as poor prognosis ( p 0.05). Additionally, our results demonstrated that E-cadherin expression was down-regulated in gastric cancer cells with protocadherin 7 depletion. Our data indicated that protocadherin 7 may play important roles in the invasion and metastasis of gastric cancer, and protocadherin 7 could suppress cell migration and invasion through E-cadherin inhibition. Protocadherin 7 can serve as a novel biomarker for diagnostic and prognosis in patients with gastric cancer.
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- 2017
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9. Passivity and synchronization of coupled reaction-diffusion neural networks with multiple coupling and uncertain inner coupling matrices.
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Zhen Qin, Jin-Liang Wang, Qing Wang 0020, Lin-Jing Dai, and Xiang-Yu Guo
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- 2019
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10. Obtaining High-Quality Label by Distinguishing between Easy and Hard Items in Crowdsourcing.
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Wei Wang 0028, Xiang-Yu Guo, Shao-Yuan Li, Yuan Jiang 0001, and Zhi-Hua Zhou
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- 2017
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11. Modal Consistency based Pre-Trained Multi-Model Reuse.
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Yang Yang 0074, De-Chuan Zhan, Xiang-Yu Guo, and Yuan Jiang 0001
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- 2017
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12. Genetically modified non-human primate models for research on neurodegenerative diseases.
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Ming-Tian Pan, Han Zhang, Xiao-Jiang Li, and Xiang-Yu Guo
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NEURODEGENERATION ,ALZHEIMER'S disease ,CERCOPITHECUS aethiops ,HUNTINGTON disease ,PRIMATES - Abstract
Neurodegenerative diseases (NDs) are a group of debilitating neurological disorders that primarily affect elderly populations and include Alzheimer’s disease (AD), Parkinson’s disease (PD), Huntington’s disease (HD), and amyotrophic lateral sclerosis (ALS). Currently, there are no therapies available that can delay, stop, or reverse the pathological progression of NDs in clinical settings. As the population ages, NDs are imposing a huge burden on public health systems and affected families. Animal models are important tools for preclinical investigations to understand disease pathogenesis and test potential treatments. While numerous rodent models of NDs have been developed to enhance our understanding of disease mechanisms, the limited success of translating findings from animal models to clinical practice suggests that there is still a need to bridge this translation gap. Old World nonhuman primates (NHPs), such as rhesus, cynomolgus, and vervet monkeys, are phylogenetically, physiologically, biochemically, and behaviorally most relevant to humans. This is particularly evident in the similarity of the structure and function of their central nervous systems, rendering such species uniquely valuable for neuroscience research. Recently, the development of several genetically modified NHP models of NDs has successfully recapitulated key pathologies and revealed novel mechanisms. This review focuses on the efficacy of NHPs in modeling NDs and the novel pathological insights gained, as well as the challenges associated with the generation of such models and the complexities involved in their subsequent analysis. [ABSTRACT FROM AUTHOR]
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- 2024
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13. Adversarial training for prostate cancer classification using magnetic resonance imaging
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Lei Hu, Da-Wei Zhou, Xiang-Yu Guo, Wen-Hao Xu, Li-Ming Wei, and Jun-Gong Zhao
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Original Article ,Radiology, Nuclear Medicine and imaging - Abstract
BACKGROUND: To use adversarial training to increase the generalizability and diagnostic accuracy of deep learning models for prostate cancer diagnosis. METHODS: This multicenter study retrospectively included 396 prostate cancer patients who underwent magnetic resonance imaging (development set, 297 patients from Shanghai Jiao Tong University Affiliated Sixth People’s Hospital and Eighth People’s Hospital; test set, 99 patients from Renmin Hospital of Wuhan University). Two binary classification deep learning models for clinically significant prostate cancer classification [PM1, pretraining Visual Geometry Group network (VGGNet)-16-based model 1; PM2, pretraining residual network (ResNet)-50-based model 2] and two multiclass classification deep learning models for prostate cancer grading (PM3, pretraining VGGNet-16-based model 3; PM4: pretraining ResNet-50-based model 4) were built using apparent diffusion coefficient and T2-weighted images. These models were then retrained with adversarial examples starting from the initial random model parameters (AM1, adversarial training VGGNet-16 model 1; AM2, adversarial training ResNet-50 model 2; AM3, adversarial training VGGNet-16 model 3; AM4, adversarial training ResNet-50 model 4, respectively). To verify whether adversarial training can improve the diagnostic model’s effectiveness, we compared the diagnostic performance of the deep learning methods before and after adversarial training. Receiver operating characteristic curve analysis was performed to evaluate significant prostate cancer classification models. Differences in areas under the curve (AUCs) were compared using Delong’s tests. The quadratic weighted kappa score was used to verify the PCa grading models. RESULTS: AM1 and AM2 had significantly higher AUCs than PM1 and PM2 in the internal validation dataset (0.84 vs. 0.89 and 0.83 vs. 0.87) and test dataset (0.73 vs. 0.86 and 0.72 vs. 0.82). AM3 and AM4 showed higher κ values than PM3 and PM4 in the internal validation dataset {0.266 [95% confidence interval (CI): 0.152–0.379] vs. 0.292 (95% CI: 0.178–0.405) and 0.254 (95% CI: 0.159–0.390) vs. 0.279 (95% CI: 0.163−0.396)} and test set [0.196 (95% CI: 0.029–0.362) vs. 0.268 (95% CI: 0.109–0.427) and 0.183 (95% CI: 0.015–0.351) vs. 0.228 (95% CI: 0.068−0.389)]. CONCLUSIONS: Using adversarial examples to train prostate cancer classification deep learning models can improve their generalizability and classification abilities.
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- 2022
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14. CircKDM4B suppresses breast cancer progression via the miR-675/NEDD4L axis
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Xiang-Yu Guo, Tian-Tian Liu, Wen-Jie Zhu, Hai-Ting Liu, Guo-Hao Zhang, Lin Song, Rui-Nan Zhao, Xu Chen, and Peng Gao
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Jumonji Domain-Containing Histone Demethylases ,Cancer Research ,Neovascularization, Pathologic ,Nedd4 Ubiquitin Protein Ligases ,Breast Neoplasms ,RNA, Circular ,MicroRNAs ,Phosphatidylinositol 3-Kinases ,Cell Movement ,Human Umbilical Vein Endothelial Cells ,Genetics ,Humans ,Female ,Molecular Biology ,Cell Proliferation - Abstract
Increasing studies have indicated that circular RNAs (circRNAs) play pivotal roles in various cancers. Here, we aimed to explore the roles of circRNAs in breast cancer. We identified a novel circRNA circKDM4B (hsa_circ_0002926) by whole-transcriptome sequencing and validated this by Real-time quantitative polymerase chain reaction (RT-qPCR) and Sanger sequencing. It was significantly decreased in breast cancer tissues compared with adjacent non-tumor tissues. Furthermore, circKDM4B, which is mainly localized in the cytoplasm, was more resistant to actinomycin D or ribonuclease R than its linear transcript KDM4B. In addition, the overexpression of circKDM4B inhibited cell migration and invasion in vitro, while knockdown of circKDM4B induced the opposite effects. In vivo, circKDM4B suppressed tumor growth and metastasis. Additionally, circKDM4B inhibited migration and tube formation of human umbilical vein endothelial cells (HUVECs) in vitro and angiogenesis in vivo. Mechanically, circKDM4B sponged miR-675 to upregulate the expression of NEDD4-like E3 ubiquitin protein ligase (NEDD4L), which catalyzes ubiquitination of PI3KCA, thereby inhibiting PI3K/AKT and VEGFA secretion. Collectively, these findings uncovered the tumor-suppressor role of circKDM4B in breast cancer, especially in angiogenesis and tumor metastasis, indicating that circKDM4B could be a potential therapeutic target for breast cancer progression.
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- 2022
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15. Recent advances in blood-based and artificial intelligence-enhanced approaches for gastrointestinal cancer diagnosis
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Xiang-Yu Guo, Kun Sun, and Li-Shi Li
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Artificial intelligence ,Review ,Extracellular vesicles ,Exosome ,Plasma cell-free DNA ,Circulating tumor cell ,medicine ,Humans ,Gastrointestinal cancer ,Liquid biopsy ,Early Detection of Cancer ,Gastrointestinal Neoplasms ,business.industry ,Gastroenterology ,Cancer ,General Medicine ,Extracellular vesicle ,medicine.disease ,business ,Gi cancer ,Cell-Free Nucleic Acids - Abstract
Gastrointestinal (GI) cancers are among the most common cancer types and leading causes of cancer-related deaths worldwide. There is a tremendous clinical need for effective early diagnosis for better healthcare of GI cancer patients. In this article, we provide a short overview of the recent advances in GI cancer diagnosis. In the first part, we discuss the applications of blood-based biomarkers, such as plasma circulating cell-free DNA, circulating tumor cells, extracellular vesicles, and circulating cell-free RNA, for cancer liquid biopsies. In the second part, we review the current trends of artificial intelligence (AI) for pathology image and tissue biopsy analysis for GI cancer, as well as deep learning-based approaches for purity assessment of tissue biopsies. We further provide our opinions on the future directions in blood-based and AI-enhanced approaches for GI cancer diagnosis, and we think that these fields will have more intensive integrations with clinical needs in the near future.
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- 2021
16. The biogenesis, biological functions and modification of Circular RNAs
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Sen Liu, Xiang Yu Guo, Qing Juan Shang, and Peng Gao
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Clinical Biochemistry ,Molecular Biology ,Pathology and Forensic Medicine - Published
- 2023
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17. LncRNA-HNF1A-AS1 functions as a competing endogenous RNA to activate PI3K/AKT signalling pathway by sponging miR-30b-3p in gastric cancer
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Bei-Bei Lv, Ran-Ran Ma, Duan-Bo Shi, Hui Zhang, Peng Gao, Guo-Hao Zhang, Xiang-Yu Guo, and Hai-Ting Liu
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Male ,Cancer Research ,endocrine system ,Mice, Nude ,Biology ,Article ,Metastasis ,03 medical and health sciences ,Gastrointestinal cancer ,Mice ,Phosphatidylinositol 3-Kinases ,0302 clinical medicine ,RNA interference ,Cell Movement ,Stomach Neoplasms ,microRNA ,medicine ,Animals ,Humans ,Cell migration ,PI3K/AKT/mTOR pathway ,030304 developmental biology ,Aged ,Cell Proliferation ,0303 health sciences ,Oncogene ,Competing endogenous RNA ,RNA ,Cancer ,Middle Aged ,medicine.disease ,Gene Expression Regulation, Neoplastic ,MicroRNAs ,Oncology ,030220 oncology & carcinogenesis ,Cancer research ,Heterografts ,Female ,RNA, Long Noncoding ,Proto-Oncogene Proteins c-akt ,Signal Transduction - Abstract
Background Accumulating evidence demonstrated that long noncoding RNAs (lncRNAs) played important regulatory roles in many cancer types. However, the role of lncRNAs in gastric cancer (GC) progression remains unclear. Methods RT-qPCR assay was performed to detect the expression of HNF1A-AS1 in gastric cancer tissues and the non-tumourous gastric mucosa. Overexpression and RNA interference approaches were used to investigate the effects of HNF1A-AS1 on GC cells. Insight into competitive endogenous RNA (ceRNA) mechanisms was gained via bioinformatics analysis, luciferase assays and an RNA-binding protein immunoprecipitation (RIP) assay, RNA-FISH co-localisation analysis combined with microRNA (miRNA)-pulldown assay. Results This study displayed that revealed expression of HNF1A-AS1 was associated with positive lymph node metastasis in GC. Moreover, HNF1A-AS1 significantly promoted gastric cancer invasion, metastasis, angiogenesis and lymphangiogenesis in vitro and in vivo. In addition, HNF1A-AS1 was demonstrated to function as a ceRNA for miR-30b-3p. HNF1A-AS1 abolished the function of the miRNA-30b-3p and resulted in the derepression of its target, PIK3CD, which is a core oncogene involved in the progression of GC. Conclusion This study demonstrated that HNF1A-AS1 worked as a ceRNA and promoted PI3K/AKT signalling pathway-mediated GC metastasis by sponging miR-30b-3p, offering novel insights of the metastasis mechanism in GC.
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- 2020
18. THAP7-AS1 recruits the SWI/SNF to activate EGFR-ELK1 signaling and induce crosstalk between tumor-associated macrophages and breast cancer cells
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Hai-Ting Liu, Zhao-Xin Gao, Guo-Hao zhang, Xiang-Yu Guo, Xing-Chen Zhou, Rui-Nan Zhao, Sen Liu, Wen-Jie Zhu, Feng-Zhen Zhang, Han Wang, Chuan-Zong Zhao, Xiao Wang, and Peng Gao
- Abstract
Background Accumulating evidence indicates that the crosstalk between tumor cells and the microenvironment influences human cancer progression. However, the expression pattern, function role in the crosstalk between tumor cells and tumor microenvironment, and underlying mechanism of lncRNAs-related tumorigenesis in breast cancer are unknown. Methods The expression lncRNA-THAP7-AS1 in breast cancer (BC) were identified by in BC tissues. The functional roles of THAP7-AS1 were confirmed by in vitro and in vivo experiments. RNA-pulldown followed by mass spectrometry, RNA Immunoprecipitation (RIP), chromatin immunoprecipitation (ChIP) assays and luciferase reporter assay revealed the mechanisms of THAP7-AS1 in BC. RT-qPCR, ELISA assays, Flow cytometry, ChIP assays and luciferase reporter assay elucidated the crosstalk between tumor cells and (tumor-associated macrophages) TAMs. Results Here, we demonstrate that long non-coding RNA (lncRNA) THAP7-AS1 induces polarization of macrophages to the M2 phenotype in an IL-4-dependent manner, and M2 tumor-associated macrophages (TAMs) secreted IL-10, which then facilitates the progression of breast cancer (BC). Mechanistically, THAP7-AS1 promoted the combination between SNF2H, SNF2L, and BAF155 and recruited the SWI/SNF complex to the promoter of EGFR to upregulate its expression, and then induced IL-4-mediated M2 polarization of macrophages via activation of the EGFR-ELK1 signaling. Reciprocally, IL-10 released from M2 TAMs upregulates CEBP-β-dependent P300 expression, and then P300, synergistically worked with c-MYC and upregulated THAP7-AS1 expression in BC cells, which constituting a feed-forward loop between tumor cells and TAMs. Moreover, THAP7-AS1 knockdown inhibits the invasion, metastasis and M2 macrophage polarization of breast cancer in vivo. Conclusions Our study highlights the role of THAP7-AS1 in the regulation crosstalk between TAM and tumor cells in BC progression and may provide a novel therapeutic target for BC treatment.
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- 2022
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19. LINC01016 promotes tumor progression via suppression of RFFL-Mediated DHX9 ubiquitination degradation to activate PI3K/AKT pathway in triple-negative breast cancers
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Peng Gao, Ying Sun, Hui Zhang, Wenjie Zhu, Ran-Ran Ma, Xiang-Yu Guo, Haiting Liu, Guo-Hao Zhang, and Sen Liu
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- 2022
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20. ELK1-induced up-regulation of KIF26B promotes cell cycle progression in breast cancer
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Peng Gao, Ran-Ran Ma, Xiang-Yu Guo, Hai-Ting Liu, Hui Zhang, Wen-Jie Zhu, and SuXia Wang
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Cancer Research ,Gene knockdown ,Oncogene ,Cell growth ,Cell ,Wnt signaling pathway ,Hematology ,General Medicine ,Biology ,Cell cycle ,Cyclin D1 ,medicine.anatomical_structure ,Oncology ,Tumor progression ,medicine ,Cancer research - Abstract
KIF26B is a member of the kinesin superfamily that is up-regulated in various tumors, including breast cancer (BC), which can promote tumor progression. This study aimed to investigate the potential function of KIF26B in BC, and the underlying mechanisms, focusing mainly on cell proliferation. KIF26B expression was examined in BC tissue samples obtained from 99 patients. Then, we performed MTS, EdU and flow cytometry assays to detect cell proliferation, and western blotting to measure the expression of cell cycle-related proteins in MDA-MB-231 and MDA-MB-468 cells following KIF26B knockdown. Promoter analysis was used to study the upstream regulatory mechanism of KIF26B. KIF26B was upregulated in BC tissues. High expression of KIF26B was associated with clinicopathological parameters, such as positive lymph node metastasis, higher tumor grade, and higher proliferative index in BC. Furthermore, knockdown of KIF26B expression inhibited MDA-MB-231 and MDA-MB-468 cell proliferation, arresting cells in the G1 phase of the cell cycle in vitro. Similarly, KIF26B silencing decreased the expression levels of Wnt, β-catenin, and cell cycle-related proteins such as c-Myc, cyclin D1, and cyclin-dependent kinase 4, while increasing the expression of p27. Moreover, ELK1 could bind to the core promoter region of KIF26B and activate its transcription. KIF26B acts as an oncogene in BC by regulating multiple proteins involved in the cell cycle. ELK1 activates KIF26B transcription.
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- 2021
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21. An Improved Three-Factor Session Initiation Protocol Using Chebyshev Chaotic Map
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Da-Zhi Sun, Ying Yang, and Xiang-Yu Guo
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Scheme (programming language) ,biometrics ,General Computer Science ,Computer science ,computer.internet_protocol ,02 engineering and technology ,security ,0202 electrical engineering, electronic engineering, information engineering ,smartcard ,Session key ,General Materials Science ,computer.programming_language ,Session Initiation Protocol ,Authentication ,business.industry ,General Engineering ,key agreement ,Mutual authentication ,021001 nanoscience & nanotechnology ,Information sensitivity ,Elliptic curve point multiplication ,020201 artificial intelligence & image processing ,The Internet ,lcsh:Electrical engineering. Electronics. Nuclear engineering ,0210 nano-technology ,business ,computer ,lcsh:TK1-9971 ,chaotic map ,Computer network ,Anonymity - Abstract
Session Initiation Protocol (SIP) is the most widely used signalling protocol for controlling communication, establishing, maintaining, and terminating sessions on the Internet. However, since sensitive information is often transmitted through open channels, a security authentication scheme is essential. Recently, Islam et al. proposed an authentication scheme for SIP, and argued that the scheme is immune to known attacks. However, we discover that their scheme fails to achieve user anonymity, and it cannot even resist impersonation attack. Therefore, this study proposes an enhanced mutual authentication scheme to eliminate the drawbacks of the scheme proposed by Islam et al. In addition, our proposed scheme is based on extended chaotic map, which avoids computationally expensive elliptic curve point multiplication. Then, we use Burrows-Abadi-Needham logic to prove that the proposed scheme achieves secure mutual authentication, and we use the Real-Or-Random model to analyze the formal security verification of the session key. Finally, we compare the performance and the security features of the proposed scheme with some existing schemes. Therefore, we provide better safety and efficiency than related schemes and the proposed scheme is suitable for SIP.
- Published
- 2020
22. Research Advances in Ambient Ionization and Miniature Mass Spectrometry
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Xiao-Xiao Ma, Xiao-Xu Li, Hua Bai, Xue-Mei Huang, Jun-Feng Zhai, Xiang-Yu Guo, and Qiang Ma
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Chemistry ,Chemical measurement ,business.industry ,010401 analytical chemistry ,02 engineering and technology ,021001 nanoscience & nanotechnology ,Mass spectrometry ,01 natural sciences ,0104 chemical sciences ,Analytical Chemistry ,Chromatographic separation ,Public security ,0210 nano-technology ,Process engineering ,business ,Ambient ionization - Abstract
The development and applications of ambient ionization and miniature mass spectrometry are current research focus in chemical measurement. The analytical technology based on the combination of ambient ionization and miniature mass spectrometry can bypass chromatographic separation and eliminate or simplify sample pretreatment process. The protocol can reverse the labor-intensive and time-consuming drawbacks of traditional analytical methodologies, and realize rapid, on-site analysis with high sensitivity and high throughput. In this paper, the research progress and applications of ambient ionization and miniature mass spectrometry in the fields of food safety, consumer product safety, public security, life sciences and environmental monitoring, are reviewed, and future trends and prospects are discussed, which may provide technical guidance for the researchers engaged in relevant fields.
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- 2019
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23. On Multi-Scalar Multiplication Algorithms for Register-Constrained Environments
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Ji-Dong Zhong, Hong-De Zhang, Xiang-Yu Guo, and Da-Zhi Sun
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Computer Networks and Communications ,Computer science ,Computation ,lcsh:TK7800-8360 ,0102 computer and information sciences ,02 engineering and technology ,Scalar multiplication ,01 natural sciences ,0202 electrical engineering, electronic engineering, information engineering ,public-key cryptosystem ,multi-scalar multiplication ,Cryptosystem ,Point (geometry) ,Electrical and Electronic Engineering ,Representation (mathematics) ,register-constrained environment ,Additive group ,joint sparse form (JSF) ,lcsh:Electronics ,Window (computing) ,Elliptic curve ,010201 computation theory & mathematics ,Hardware and Architecture ,Control and Systems Engineering ,Signal Processing ,non-adjacent form (NAF) ,020201 artificial intelligence & image processing ,Multiplication ,adaptive window method ,Algorithm - Abstract
A basic but expensive operation in the implementations of several famous public-key cryptosystems is the computation of the multi-scalar multiplication in a certain finite additive group defined by an elliptic curve. We propose an adaptive window method for the multi-scalar multiplication, which aims to balance the computation cost and the memory cost under register-constrained environments. That is, our method can maximize the computation efficiency of multi-scalar multiplication according to any small, fixed number of registers provided by electronic devices. We further demonstrate that our method is efficient when five registers are available. Our method is further studied in detail in the case where it is combined with the non-adjacent form (NAF) representation and the joint sparse form (JSF) representation. One efficiency result is that our method with the proposed improved NAF n-bit representation on average requires 209n/432 point additions. To the best of our knowledge, this efficiency result is optimal compared with those of similar methods using five registers. Unlike the previous window methods, which store all possible values in the window, our method stores those with comparatively high probabilities to reduce the number of required registers.
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- 2021
24. lncRNA THAP7-AS1, transcriptionally activated by SP1 and post-transcriptionally stabilized by METTL3-mediated m6A modification, exerts oncogenic properties by improving CUL4B entry into the nucleus
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Sen-Liu, Hai-Ting Liu, Guo-Hao Zhang, Xiang-Yu Guo, Ran-Ran Ma, Peng Gao, Yongxin Zou, and Wen-Jie Zhu
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Carcinogenesis ,Sp1 Transcription Factor ,Nuclear Localization Signals ,Importin ,Article ,Phosphatidylinositol 3-Kinases ,Cell Movement ,Stomach Neoplasms ,Cell Line, Tumor ,NLS ,Humans ,Molecular Biology ,Transcription factor ,PI3K/AKT/mTOR pathway ,Cell Proliferation ,Akt/PKB signaling pathway ,Chemistry ,Promoter ,Cell Biology ,Methyltransferases ,Cullin Proteins ,Cell biology ,Gene Expression Regulation, Neoplastic ,MicroRNAs ,RNA, Long Noncoding ,CUL4B ,Nuclear localization sequence - Abstract
Long noncoding RNAs (lncRNAs) are dysregulated in different cancer types, and thus have emerged as important regulators of the initiation and progression of human cancers. However, the biological functions and the underlying mechanisms responsible for their functions in gastric cancer (GC) remain poorly understood. Here, by lncRNA microarray, we identified 1414 differentially expressed lncRNAs, among which THAP7-AS1 was significantly upregulated in GC tissues compared with non-tumorous gastric tissues. High expression of THAP7-AS1 was correlated with positive lymph node metastasis and poorer prognosis. SP1, a transcription factor, could bind directly to the THAP7-AS1 promoter region and activate its transcription. Moreover, the m(6)A modification of THAP7-AS1 by METTL3 enhanced its expression depending on the “reader” protein IGF2BP1-dependent pathway. THAP7-AS1 promoted GC cell progression. Mechanistically, THAP7-AS1 interacted with the 1-50 Amino Acid Region (nuclear localization signal) of CUL4B through its 1-442 nt Sequence, and it promoted interaction between nuclear localization signal (NLS) and importin α1, and improved the CUL4B protein entry into the nucleus, repressing miR-22-3p and miR-320a expression by CUL4B-catalyzed H2AK119ub1 and the EZH2-mediated H3K27me3, subsequently activating PI3K/AKT signaling pathway to promote GC progression. Moreover, LV-sh-THAP7-AS1 treatment could suppress GC growth, invasion and metastasis, indicating that THAP7-AS1 may act as a promising molecular target for GC therapies. Taken together, our results show that THAP7-AS1, transcriptionally activated by SP1 and then modified by METTL3-mediated m6A, exerts oncogenic functions, by promoting interaction between NLS and importin α1 and then improving the CUL4B protein entry into the nucleus to repress the transcription of miR-22-3p and miR-320a.
- Published
- 2021
25. Modeling neurodegenerative diseases using non-human primates: advances and challenges
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Bang Li, Da-Jian He, Xiao-Jiang Li, and Xiang-Yu Guo
- Abstract
Neurodegenerative diseases (NDs), such as Alzheimer’s disease (AD), Parkinson’s disease (PD), Huntington’s disease (HD), and amyotrophic lateral sclerosis (ALS), are pathologically characterized by progressive loss of selective populations of neurons in the affected brain regions and clinically manifested by cognitive, motor, and psychological dysfunctions. Since aging is the major risk factor for NDs and the elderly population is expected to expand considerably in the coming decades, the prevalence of NDs will significantly increase, leading to a greater medical burden to society and affected families. Despite extensive research on NDs, no effective therapy is available for NDs, largely due to a lack of complete understanding of the pathogenesis of NDs. Although research on small animal and rodent models has provided tremendous knowledge of molecular mechanisms of disease pathogenesis, few translational successes have been reported in clinical trials. In particular, most genetically modified rodent models are unable to recapitulate striking and overt neurodegeneration seen in the patient brains. Non-human primates (NHPs) are the most relevant laboratory animals to humans, and recent studies using NHP neurodegeneration models have uncovered important pathological features of NDs. Here, we review the unique features of NHPs for modeling NDs and new insights into AD, PD, and ALS gained from animal models, highlight the contribution of gene editing techniques to establishing NHP models, and discuss the challenges of investigating NHP models.
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- 2022
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26. Association of white blood cell counts with left ventricular mass index in hypertensive patients undergoing anti-hypertensive drug therapy
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Hongtao Shi, Zhi‐yang Lv, Xiao‐jing Wang, Chengqian Yin, Junbo Ge, Guan‐ming Qi, Xiang‐yu Guo, Junjie Guo, Wei Fu, and Hong-xia Chu
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Cancer Research ,medicine.medical_specialty ,Lymphocyte ,Diastole ,Inflammation ,030204 cardiovascular system & hematology ,Left ventricular hypertrophy ,03 medical and health sciences ,0302 clinical medicine ,Pharmacotherapy ,Immunology and Microbiology (miscellaneous) ,White blood cell ,Internal medicine ,medicine ,cardiovascular diseases ,030212 general & internal medicine ,business.industry ,Monocyte ,Cancer ,Articles ,General Medicine ,medicine.disease ,Endocrinology ,medicine.anatomical_structure ,Cardiology ,medicine.symptom ,business - Abstract
Although studies using animal models have demonstrated that nonhemodynamic factors, including inflammatory cells and cytokines, contribute to left ventricular hypertrophy (LVH), there is little clinical data to confirm this association. Therefore in the present study, levels of circulating specific types of leukocyte were measured to determine the association between white blood cells and left ventricular mass index (LVMI) in hypertensive patients undergoing anti-hypertensive drug therapy. A total of 144 consecutive hypertensive patients taking anti-hypertensive drug therapy were enrolled in the current study. Subjects were divided into two groups: Those with normal geometry and those with left LVH. Total white blood cells and differentiated subtypes (neutrophils, lymphocytes, monocytes) were counted, and left ventricular end-diastolic diameter, left ventricular posterior wall thickness in diastole and inter-ventricular septal wall thickness in diastole were all measured. Analysis revealed a significant correlation between LVMI and total white blood cell levels (P=0.013). The percentage of LVH in the highest tertile of WBC was increased compared with the middle tertile (P=0.008). Furthermore, a significant correlation between the highest tertile of neutrophil counts and LVH was observed (P=0.039). However, no significant associations between LVMI and monocyte or lymphocyte counts were detected. Therefore, the current study determined that increased total white blood cell and neutrophil subtype counts were associated with LVMI in hypertensive patients undergoing anti-hypertensive drug therapy. They may provide convenient and useful markers for further risk appraisal of LVH caused by nonhemodynamic factors of hypertension.
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- 2017
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27. MicroRNA-4472 Promotes Tumor Proliferation and Aggressiveness in Breast Cancer by Targeting RGMA and Inducing EMT
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Peng Gao, Yawen Wang, Xiang-Yu Guo, Ran-Ran Ma, Yan Li, Xu Chen, Jun-Min Wei, Shu-Jing Jiang, and Hai-Ting Liu
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0301 basic medicine ,Cancer Research ,Epithelial-Mesenchymal Transition ,Down-Regulation ,Breast Neoplasms ,Nerve Tissue Proteins ,GPI-Linked Proteins ,Metastasis ,03 medical and health sciences ,0302 clinical medicine ,Breast cancer ,Cell Line, Tumor ,microRNA ,Medicine ,Humans ,Cell Proliferation ,Neoplasm Staging ,Oligonucleotide Array Sequence Analysis ,Regulation of gene expression ,business.industry ,Gene Expression Profiling ,Cancer ,Repulsive guidance molecule A ,Oncogenes ,Middle Aged ,medicine.disease ,Metastatic breast cancer ,Up-Regulation ,Gene Expression Regulation, Neoplastic ,MicroRNAs ,030104 developmental biology ,Oncology ,030220 oncology & carcinogenesis ,Cancer research ,Disease Progression ,Ectopic expression ,Female ,business - Abstract
Background Breast cancer is the most common cause of cancer-related death in women worldwide. MicroRNA (miRNA) ectopic expression has been reported to be involved in the regulation of gene expression in breast cancer. We screened several differentially expressed miRNAs associated with breast cancer chemoresistance, growth, and metastasis using a miRNA microarray. Increased expression of miR-4472 has been associated with larger breast tumors and chemoresistance. However, the biologic function of miR-4472 and its molecular mechanisms in cancer progression have not yet been reported. Materials and Methods Real-time quantitative polymerase chain reaction was used to measure the expression of miR-4472 in breast cancer tissue and cell lines. The biologic functions of miR-4472 and its target gene were explored using Transwell, cell proliferation, and flow cytometry assays. Bioinformatics tools, dual-luciferase reporter assays, and Western blot were used to identify the target genes of miR-4472. Western blot was used to explain the participation of miR-4472 and target gene in epithelial-to-mesenchymal transition. Results miR-4472 was significantly upregulated in highly metastatic breast cancer tissues, and its expression was positively associated with larger tumor size and advanced pTNM stage. miR-4472 promoted breast cancer cell metastasis and growth. Repulsive guidance molecule A (RGMA) was a direct target gene of miR-4472. RGMA was identified as a suppressor in cancer metastasis. miR-4472 downregulated expression of RGMA and promoted epithelial-to-mesenchymal transition by suppressing E-cadherin and initiating vimentin, β-catenin, and Slug. Conclusions miR-4472 contributes to the progression of breast cancer by regulating RGMA expression and inducing epithelial-to-mesenchymal transition, indicating that miR-4472/RGMA might serve as a therapeutic target for breast cancer.
- Published
- 2019
28. C/EBPα-induced miR-100 expression suppresses tumor metastasis and growth by targeting ZBTB7A in gastric cancer
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Hui Zhang, Ai-Yan Xing, Peng Gao, Duan-Bo Shi, Ya-Wen Wang, Xiang-Yu Guo, and Ji-Wei Gao
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Oncology ,Cancer Research ,medicine.medical_specialty ,Tumor suppressor gene ,Biology ,Transfection ,Metastasis ,Stomach Neoplasms ,Internal medicine ,microRNA ,medicine ,Humans ,Neoplasm Metastasis ,Transcription factor ,Cell Proliferation ,Gene knockdown ,Ccaat-enhancer-binding proteins ,Cell growth ,Cancer ,medicine.disease ,DNA-Binding Proteins ,MicroRNAs ,CCAAT-Enhancer-Binding Proteins ,Cancer research ,Transcription Factors - Abstract
MicroRNAs have been reported to play key roles in various human cancers, including gastric cancer. However, understanding of the expression of miR-100 and its regulatory mechanisms in human gastric cancer remains elusive. In this study, we reveal that miR-100 is downregulated in gastric cancer samples and gastric cancer cell lines. Furthermore, lower miR-100 expression was found in primary gastric cancer samples with lymphatic metastasis compared to those without lymphatic metastasis. Overexpression of miR-100 suppressed tumor growth in vivo and inhibited gastric cancer invasion and metastasis in vitro and in vivo. Furthermore, we demonstrated that miR-100 reduced gastric cancer aggressiveness by directly targeting ZBTB7A. Knockdown of ZBTB7A by siRNA disrupted gastric cancer progression by impairing tumor invasion and metastasis. High expression of ZBTB7A was significantly correlated with poorer prognosis in gastric cancer patients. Our results also showed that the transcription factor CCAAT/enhancer-binding protein alpha (C/EBPα) could induce the expression of miR-100 by binding to the putative promoter region of miR-100. This study demonstrated that miR-100 could be induced by C/EBPα and may act as a tumor suppressor gene by inhibiting ZBTB7A.
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- 2015
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29. Protocadherin 7 inhibits cell migration and invasion through E-cadherin in gastric cancer
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Peng Gao, Xiao-Ling Liu, Xiang-Yu Guo, Hong-Fang Chen, Ran-Ran Ma, Jun-Yi He, and Hui Zhang
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Adult ,Male ,0301 basic medicine ,animal structures ,Protocadherin ,Biology ,Metastasis ,03 medical and health sciences ,0302 clinical medicine ,Antigens, CD ,Cell Movement ,Stomach Neoplasms ,Cell Line, Tumor ,medicine ,Humans ,Neoplasm Invasiveness ,Epithelial–mesenchymal transition ,RC254-282 ,Aged ,Cell Proliferation ,Cadherin ,Cancer ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,Cell migration ,General Medicine ,Middle Aged ,Cadherins ,Prognosis ,medicine.disease ,Protocadherins ,030104 developmental biology ,Protocadherin-7 ,030220 oncology & carcinogenesis ,Cancer research ,Female ,Function (biology) - Abstract
The protocadherin 7 is a member of the protocadherin family that expressed aberrantly in many types of human cancers. However, its expression, function, and underlying mechanisms are little known in gastric cancer. In this study, we detected protocadherin 7 expression in gastric cancer tissues and non-tumorous gastric mucosa tissues by real-time quantitative polymerase chain reaction and immunohistochemistry. The association of protocadherin 7 expression with the clinicopathological characteristics and the prognosis was subsequently analyzed. MTS ((3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium)) and transwell assays were performed to assess the effect of protocadherin 7 on proliferation, migration, and invasion in gastric cancer cell lines. Moreover, real-time quantitative polymerase chain reaction and western blot were used to detect the expression of epithelial–mesenchymal transition markers. Protocadherin 7 expression was decreased gradiently from normal tissue to gastric cancer, especially in gastric cancer tissue with lymph node metastasis. Low expression of protocadherin 7 was significantly associated with Lauren’s classification ( p = 0.0005), lymph node metastases ( p = 0.0002), and tumor node metastasis stage ( p = 0.0221), as well as poor prognosis ( p 0.05). Additionally, our results demonstrated that E-cadherin expression was down-regulated in gastric cancer cells with protocadherin 7 depletion. Our data indicated that protocadherin 7 may play important roles in the invasion and metastasis of gastric cancer, and protocadherin 7 could suppress cell migration and invasion through E-cadherin inhibition. Protocadherin 7 can serve as a novel biomarker for diagnostic and prognosis in patients with gastric cancer.
- Published
- 2017
30. Overexpression of TMPRSS4 promotes tumor proliferation and aggressiveness in breast cancer
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Xu Chen, Ya-Wen Wang, Xiaomei Li, Ran-Ran Ma, Hui Zhang, Wen-Lou Liu, Xiang-Yu Guo, Duan-Bo Shi, Peng Gao, Feng Hou, Hai-Ting Liu, and Li Ming
- Subjects
0301 basic medicine ,Adult ,Epithelial-Mesenchymal Transition ,proliferation ,serine protease ,Cell ,Vimentin ,Breast Neoplasms ,medicine.disease_cause ,transmembrane protease serine 4 ,Gene Expression Regulation, Enzymologic ,03 medical and health sciences ,0302 clinical medicine ,breast cancer ,Cell Movement ,Genetics ,medicine ,Humans ,Neoplasm Invasiveness ,Epithelial–mesenchymal transition ,Cell Proliferation ,Oncogene ,biology ,Cell growth ,Serine Endopeptidases ,Cancer ,Membrane Proteins ,General Medicine ,Articles ,Cell cycle ,Middle Aged ,medicine.disease ,invasion ,Neoplasm Proteins ,Gene Expression Regulation, Neoplastic ,030104 developmental biology ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,biology.protein ,Cancer research ,MCF-7 Cells ,Female ,Carcinogenesis - Abstract
Transmembrane protease serine 4 (TMPRSS4) is a novel type II transmembrane serine protease that is overexpressed in various types of human cancers and has an important function in cancer progression. However, there is a paucity of data available regarding the biological effects of TMPRSS4 on breast cancer (BC) cells and the underlying mechanisms. In this study, expression of TMPRSS4 in BC tissues was detected by immunohistochemistry. The relationship between TMPRSS4 expression and clinicopathological characteristics as well as prognosis was evaluated. The effects of TMPRSS4 on cell proliferation, migration and invasion were investigated in BC cell lines in vitro. Additionally, RT-qPCR and western blot analysis were used to determine the expressions of epithelial-mesenchymal transition (EMT) biomarkers and TMPRSS4 in BC cell lines. We found that TMPRSS4 was overexpressed in BC tissues and its expression level was closely correlated with tumor size, histological grade, lymph node metastasis, clinical stage as well as poor survival (all P
- Published
- 2016
31. The Analysis of Comparative Advantages of Main Soybean Producing Countries
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Xiang Yu Guo, Lili Jiang, and Dong Hui Wei
- Subjects
Countermeasure ,Yield (finance) ,fungi ,General Engineering ,food and beverages ,Business ,China ,Agricultural economics ,Comparative advantage ,Export trade ,Unit (housing) - Abstract
This paper selects the world's major soybean producing countries, the United States, Brazil, Argentina, China. From cultivation area, total output, yield per unit, import and export trade of the four main soybean producing countries, making a comparative study of the international competitiveness of soybean country, to reach the comparative advantages of various countries, then come to put forward countermeasure suggestion to the further development of China's soybean industry.
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- 2011
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32. Dynamic fluctuations of advanced glycation end products and its C-terminal truncated receptor level in patients with acute ST-segment elevation myocardial infarction and undergoing diabetes or not
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Hong-Wei Li, Wei-Ping Li, Bing Hua, Hui Qiu, Xu-Hua Shen, and Xiang-Yu Guo
- Subjects
Glycation End Products, Advanced ,Male ,0301 basic medicine ,medicine.medical_specialty ,medicine.drug_class ,Receptor for Advanced Glycation End Products ,Population ,Observational Study ,Comorbidity ,030204 cardiovascular system & hematology ,Severity of Illness Index ,Coronary artery disease ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,Diabetes mellitus ,Severity of illness ,Diabetes Mellitus ,medicine ,Natriuretic peptide ,Humans ,soluble receptor for advanced glycation end products ,cardiovascular diseases ,Myocardial infarction ,education ,Aged ,Heart Failure ,education.field_of_study ,diabetes ,business.industry ,Myocardium ,advanced glycation end products ,Troponin I ,Retrospective cohort study ,General Medicine ,Middle Aged ,Prognosis ,medicine.disease ,ST-segment elevation myocardial infarction ,surgical procedures, operative ,030104 developmental biology ,Cardiology ,ST Elevation Myocardial Infarction ,Female ,business ,Biomarkers ,Research Article - Abstract
The role of advanced glycation end products (AGEs) and its C-terminal truncated receptor (soluble receptor for advanced glycation end products, sRAGE) in ST-segment elevation myocardial infarction (STEMI) patients with or without diabetes is unknown. We compared their levels in patients with and without STEMI, as well as with and without diabetes. A prospective observational study was performed between December 2014 and December 2015. Study group included STEMI patients with coronary artery disease; control group included patients without coronary artery disease. Levels of AGEs and sRAGE were tested on Days 0, 2, and 5 after STEMI. Levels of creatine kinase-MB (CK-MB), cardiac troponin I, and N-terminal pro-brain natriuretic peptide (NT-proBNP) were tested on Days 0, 1, 2, and 3. Patient's diabetic status was determined by medical history or oral glucose tolerance test. Compared to patients in the control group, STEMI patients showed elevated levels of AGEs and sRAGE. In the STEMI group, diabetic patients had higher levels of AGEs and sRAGE compared to nondiabetic patients. The level of AGEs correlated with peak level of CK-MB in the overall population of patients with STEMI and with peak level of NT-proBNP in diabetic patients with STEMI. Levels of AGEs and sRAGE were elevated after STEMI, especially among patients with diabetes. These markers could serve to indicate the severity of myocardial injury and cardiac insufficiency, and play a potential role in predicting the prognosis of patients with STEMI.
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- 2018
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33. Evaluation of new socialist countryside development in China
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Todd M. Schmit, Brian M. Henehan, Dan Li, Xiang-Yu Guo, and Zhi-Gang Yu
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Economics and Econometrics ,Economic growth ,Index (economics) ,Index system ,business.industry ,Economic reform ,Standard of living ,Agricultural and Biological Sciences (miscellaneous) ,Agriculture ,Value (economics) ,Economics ,Rural area ,business ,China - Abstract
PurposeThe purpose of this paper is to evaluate the level of new socialist countryside (NSC) construction among different provinces in China. China prioritized a NSC reform policy in 2005 to address the growing disparities in incomes and living standards between rural and urban populations. These policies are evaluated to measure the extent of effective reform concerning farmer, agricultural, and rural economic development.Design/methodology/approachAn index system is developed and factor analysis is performed to describe the relative contributions of economic reform. Aggregate index scores are computed to rank provincial progress.FindingsRankings indicate the progression of rural economic reform is moderate, at best, and mostly isolated to well‐developed eastern provinces. Reform growth is also uneven across similarly rural provinces, indicating a need for continued attention in these poorer areas.Originality/valueContinued applications of the index and scoring procedure developed here will provide useful insights as time progresses and reform efforts continue.
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- 2009
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34. Association of Left Ventricular Hypertrophy With a Faster Rate of Renal Function Decline in Elderly Patients With Non‐End‐Stage Renal Disease
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Xiang‐yu Guo, Jie Cui, Gui‐fang Song, Hong‐wei Li, Jun Li, Guan‐ming Qi, Xiao‐jing Wang, Zhi‐yang Lv, Hong‐tao Shi, Zheyong Huang, Junbo Ge, and Junjie Guo
- Subjects
Male ,China ,medicine.medical_specialty ,Time Factors ,Renal function ,Kidney ,Left ventricular hypertrophy ,End stage renal disease ,Risk Factors ,Internal medicine ,Odds Ratio ,medicine ,Humans ,cardiovascular diseases ,Renal Insufficiency, Chronic ,Ventricular remodeling ,Original Research ,Aged ,Retrospective Studies ,Ultrasonography ,Aged, 80 and over ,Chi-Square Distribution ,Ventricular Remodeling ,business.industry ,Age Factors ,Odds ratio ,medicine.disease ,left ventricular hypotrophy ,Logistic Models ,medicine.anatomical_structure ,Multivariate Analysis ,Disease Progression ,Cardiology ,non–end‐stage renal disease ,Female ,Hypertrophy, Left Ventricular ,left ventricular mass index ,Cardiology and Cardiovascular Medicine ,business ,Chi-squared distribution ,chronic kidney disease ,rapid kidney function decline ,Glomerular Filtration Rate ,Kidney disease - Abstract
Background Several studies have indicated that chronic kidney disease is independently associated with the presence of left ventricular hypertrophy ( LVH ). However, little clinical data are currently available regarding the detailed correlation between LVH and renal function in elderly patients with non–end‐stage renal disease. Methods and Results A total of 300 in‐ and outpatients (more than 60 years of age, non‐end‐stage renal disease), 251 with LVH and 49 without LVH , seen at Beijing Friendship Hospital from January 2000 to December 2010 were included in this retrospective study. One observation period of 12 months was used to detect rapid kidney function decline. The evaluations of cardiac structure and function were performed via echocardiography. The multivariable logistic analysis showed patients with LVH had a much higher risk of rapid kidney function decline than those without LVH . Additionally, the baseline left ventricular mass index was 140 (125–160) g/m 2 in the non–chronic kidney disease group, 152 (130–175) g/m 2 in the mild chronic kidney disease group (estimated glomerular filtration rate (eGFR)≥60 ml/min/1.73 m 2 ), and 153 (133–183) g/m 2 in the severe chronic kidney disease group (eGFR2 ), with a significant difference ( P =0.009). Conclusions Our data demonstrate that a high rate of renal function decline contributes to pathological LVH in non–end‐stage renal disease elderly patients and that LVH is positively associated with renal function decline followed by an increased risk of rapid kidney function decline.
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- 2015
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35. Dynamic fluctuations of advanced glycation end products and its C-terminal truncated receptor level in patients with acute ST-segment elevation myocardial infarction and undergoing diabetes or not: A retrospective study.
- Author
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Hui Qiu, Wei-Ping Li, Xu-Hua Shen, Xiang-Yu Guo, Bing Hua, and Hong-Wei Li
- Published
- 2018
- Full Text
- View/download PDF
36. [Rhesus monkey (Macaca mulatta) muller cells exhibit retinal stem/progenitor cell features in vitro]
- Author
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Xiang-Yu, Guo, Li-Fang, Jin, Shao-Hui, Ji, and Wei-Zhi, Ji
- Subjects
Neurons ,Stem Cells ,Animals ,Humans ,Cell Differentiation ,Macaca mulatta ,Cells, Cultured ,Retina - Abstract
Recent evidences indicate that retinal muller cells exhibit retinal progenitor characteristics under certain condition in chick, rat and human. However, there is no report on nonhuman primate, a close relative to human. In this study, we first established a muller cell line of rhesus monkey expressing GS, vimentin, CRALBP, EGFR, barely GFAP, which resemble the expression profile of human muller cells, differ from that of rodent. Expression of pax6, nestin, sox2, otx2, six6, and six3 was detected after one week culture in neural stem cell medium. Further culture with retinoic acid induced some cells differentiate toward neuron. These results suggest that primate muller cell is capable of dedifferentiating to retinal progenitors, which may serve as a potential cell source for cell therapy to treat retinal degenerative diseases.
- Published
- 2011
37. Use of traditional Chinese medicine in Chinese patients with coronary heart disease
- Author
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Xiang Yu, Guo, Jing, Liu, Jun, Liu, Hong Juan, Li, Yue, Qi, Lan Ping, Qin, Miao, Wang, and Dong, Zhao
- Subjects
Male ,China ,Cross-Sectional Studies ,Asian People ,Secondary Prevention ,Humans ,Coronary Disease ,Female ,Medicine, Chinese Traditional ,Middle Aged ,Aged - Abstract
To study the use of traditional Chinese medicine (TCM) or both TCM and guideline-recommended Western medicine (WM) in Chinese patients with coronary heart disease (CHD).A cross-sectional nationwide survey of 2803 CHD outpatients was completed by collecting information, including general demographic data, disease history, and use of drugs (including TCM and WM).Of the 2712 CHD outpatients with complete drug treatment data, only 3.1% received TCM without any WM for CHD, 30.0% received both TCM and WM recommended by current CHD guidelines, and 66.9% received only WM. Patients with a longer history of CHD or with a history of stroke, were more likely to use TCM. However, 90.6% of CHD patients who used TCM also used certain WM. Furthermore, patients who used more types of TCM tended to use much less WM recommended by current guidelines.A substantial proportion of Chinese CHD outpatients use both TCM and WM for secondary prevention of CHD. It is important to assess the effect of combined TCM and WM on major clinical outcomes in Chinese CHD patients.
- Published
- 2011
38. [Prevention of cardiovascular diseases with multiple risk factors based on 'Polypill' concepts]
- Author
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Xiang-yu, Guo and Dong, Zhao
- Subjects
Drug Combinations ,Cardiovascular Diseases ,Risk Factors ,Humans - Published
- 2011
39. Overexpression of TMPRSS4 promotes tumor proliferation and aggressiveness in breast cancer.
- Author
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XIAO-MEI LI, WEN-LOU LIU, XU CHEN, YA-WEN WANG, DUAN-BO SHI, HUI ZHANG, RAN-RAN MA, HAI-TING LIU, XIANG-YU GUO, FENG HOU, MING LI, and PENG GAO
- Published
- 2017
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40. A Method for Fast Screening of Allergenic Fragrance Substance in Plush Toys
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Qing Lü, Xiang-Yu Guo, Wang Ye, Qing Zhang, Hua Bai, Hai-Yu Li, and Pi Li
- Subjects
Chromatography ,Chemistry ,General Medicine - Published
- 2013
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41. Evaluating seismic imaging methods on reservoir interpretation
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Yong‐Jun, Wang, primary, Yun, Ling, additional, and Xiang‐Yu, Guo, additional
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- 2011
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42. Use of Traditional Chinese Medicine in Chinese Patients with Coronary Heart Disease.
- Author
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Xiang Yu, GUO, Jing, LIU, Jun, LIU, Hong Juan, LI, Yue, QI, Lan Ping, QIN, Miao, WANG, and Dong, ZHAO
- Subjects
CHINESE medicine ,CORONARY disease ,DEMOGRAPHIC databases ,INFORMATION theory ,HEALTH outcome assessment ,HEART abnormalities ,PATIENTS ,PHYSIOLOGY - Abstract
Objective To study the use of traditional Chinese medicine (TCM) or both TCM and guideline-recommended Western medicine (WM) in Chinese patients with coronary heart disease (CHD). Methods A cross-sectional nationwide survey of 2803 CHD outpatients was completed by collecting information, including general demographic data, disease history, and use of drugs (including TCM and WM). Results Of the 2712 CHD outpatients with complete drug treatment data, only 3.1% received TCM without any WM for CHD, 30.0% received both TCM and WM recommended by current CHD guidelines, and 66.9% received only WM. Patients with a longer history of CHD or with a history of stroke, were more likely to use TCM. However, 90.6% of CHD patients who used TCM also used certain WM. Furthermore, patients who used more types of TCM tended to use much less WM recommended by current guidelines. Conclusion A substantial proportion of Chinese CHD outpatients use both TCM and WM for secondary prevention of CHD. It is important to assess the effect of combined TCM and WM on major clinical outcomes in Chinese CHD patients. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
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