11 results on '"Meng, Chai"'
Search Results
2. Prostate artery embolization on lower urinary tract symptoms related to benign prostatic hyperplasia: A systematic review and meta-analysis
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Xiao-Yan, Wang, Yu-Meng, Chai, Wen-Hui, Huang, and Yong, Zhang
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General Medicine - Abstract
Prostate artery embolization (PAE) is a promising minimally invasive therapy that improves lower urinary tract symptoms (LUTS) related to benign prostatic hyperplasia (BPH). Transurethral resection of the prostate (TURP) is the gold standard therapy for LUTS/BPH.To evaluate the efficacy and safety of PAEA literature review was performed to identify all published articles on PAEEleven studies involving 1070 participants were included. Compared with the TURP group, the PAE group had a similar effect on the International Index of Erectile Function (IPSS) score, Peak urinary flow rate (Qmax), postvoid residual volume (PVR), Prostate volume (PV), prostatic specific antigen (PSA), The International Index of Erectile Function short form (IIEF-5) scores, and erectile dysfunction during 24 mo follow-up. Lower quality of life (QoL) score, lower rate of retrograde ejaculation and shorter hospital stay in the PAE group. There was no participant death in either group. A higher proportion of haematuria, urinary incontinence and urinary stricture was identified in the TURP group.PAE may be an appropriate option for elderly patients, patients who are not candidates for surgery, and patients who do not want to risk the potential adverse effects of TURP. Studies with large cases and long follow-up time are needed to validate results.
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- 2022
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3. Lipid lowering effects and safety of evolocumab in Chinese patients at very high cardiovascular risk: a single-center study
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Meng Chai, Haitao Zhang, Lixia Yang, Jing Liang, Hongya Han, Xiaoli Liu, Xiaoteng Ma, Yan Liu, Dongmei Shi, Yingxin Zhao, Yuyang Liu, and Yujie Zhou
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General Medicine - Published
- 2023
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4. Synthetic Biology Toolkits and Metabolic Engineering Applied in Corynebacterium glutamicum for Biomanufacturing
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Xueqin Lv, Meng Chai, Deng Chen, Wei Lu, Long Liu, Yanfeng Liu, Qi Chen, Jianghua Li, and Guocheng Du
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Engineering ,business.industry ,Biomedical Engineering ,General Medicine ,Directed evolution ,Biochemistry, Genetics and Molecular Biology (miscellaneous) ,Corynebacterium glutamicum ,Metabolic engineering ,Synthetic biology ,Bioproducts ,bacteria ,Biomanufacturing ,Biochemical engineering ,business ,Flux (metabolism) - Abstract
Corynebacterium glutamicum is an important workhorse in industrial white biotechnology. It has been widely applied in the producing processes of amino acids, fuels, and diverse value-added chemicals. With the continuous disclosure of genetic regulation mechanisms, various strategies and technologies of synthetic biology were used to design and construct C. glutamicum cells for biomanufacturing and bioremediation. This study mainly aimed to summarize the design and construction strategies of C. glutamicum-engineered strains, which were based on genomic modification, synthetic biological device-assisted metabolic flux optimization, and directed evolution-based engineering. Then, taking two important bioproducts (N-acetylglucosamine and hyaluronic acid) as examples, the applications of C. glutamicum cell factories were introduced. Finally, we discussed the current challenges and future development trends of C. glutamicum-engineered strain construction.
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- 2021
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5. Ticagrelor Versus Clopidogrel in Patients with Two CYP2C19 Loss-of-Function Alleles Undergoing Percutaneous Coronary Intervention
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Yujie Zhou, Meng Chai, Yingxin Zhao, Ziwei Xi, Ying Yu, Xiaoli Liu, Jing Liang, and Wei Liu
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Male ,0301 basic medicine ,Ticagrelor ,medicine.medical_specialty ,Time Factors ,Pharmacogenomic Variants ,medicine.medical_treatment ,Myocardial Infarction ,Hemorrhage ,Coronary Artery Disease ,CYP2C19 ,030204 cardiovascular system & hematology ,Risk Assessment ,03 medical and health sciences ,Percutaneous Coronary Intervention ,0302 clinical medicine ,Risk Factors ,Internal medicine ,medicine ,Humans ,Pharmacology (medical) ,Registries ,cardiovascular diseases ,Adverse effect ,Aged ,Retrospective Studies ,Pharmacology ,business.industry ,Proportional hazards model ,Coronary Thrombosis ,Percutaneous coronary intervention ,General Medicine ,Middle Aged ,Clopidogrel ,Cytochrome P-450 CYP2C19 ,Treatment Outcome ,030104 developmental biology ,Propensity score matching ,Conventional PCI ,Purinergic P2Y Receptor Antagonists ,Female ,Stents ,Cardiology and Cardiovascular Medicine ,business ,Platelet Aggregation Inhibitors ,medicine.drug - Abstract
To compare the risk of cardiovascular events between patients with two CYP2C19 loss-of-function alleles who were prescribed ticagrelor or clopidogrel after percutaneous coronary intervention (PCI). Patients with two loss-of-function alleles based on the CYP2C19 genotype were selected from patients enrolled in a retrospective institutional registry. Propensity score matching using logistic regression was performed to adjust for bias between patients prescribed ticagrelor or clopidogrel. Multivariate Cox regression was used to compare the risk of adverse events in the ticagrelor and clopidogrel groups. The primary outcome was the incidence of major adverse cardiac events plus any repeat target vessel revascularization within 12 months after PCI. The safety outcomes were minor and major bleeding events. From 1518 patients carrying two loss-of-function alleles based on the CYP2C19 genotype who underwent PCI, 638 patients treated with ticagrelor or clopidogrel were successfully propensity-score matched. The primary outcome occurred in 25 patients (7.8%) in the ticagrelor group and 47 (14.7%) in the clopidogrel group. The risk of the primary outcome was significantly lower in the ticagrelor group versus the clopidogrel group (HR 0.466, 95% CI 0.286–0.759, p = 0.002). The incidence of major bleeding events did not significantly differ between the ticagrelor and clopidogrel groups (0.3% and 0.9%, respectively), while the ticagrelor group had a higher risk of minor bleeding events (HR 1.959, 95% CI 1.396–2.750, p
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- 2020
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6. Design of Rural Human Resource Management Platform Integrating IoT and Cloud Computing
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Meng Chai
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Technology ,Article Subject ,General Computer Science ,General Mathematics ,General Neuroscience ,Workforce ,Humans ,General Medicine ,Cloud Computing - Abstract
With the advent of the Internet of Things era, these hot technologies such as distributed, parallel computing, network storage, and load balancing can provide a good application foundation for the Internet of Things, enabling real-time dynamic management and intelligent analysis of hundreds of millions of items in the Internet of Things to be possible. The Internet of Things has changed from a concept to a reality, quickly reaching every corner of society. On the other hand, with the enhancement of the mobility of social talents, the file management of the talent service center is becoming more and more difficult. However, the traditional management methods of human resources files have problems such as poor resource sharing, asymmetric resources, and heterogeneous information sharing, which can no longer meet the needs of both the supply and demand sides of human resources with diversified and multiple organizational structures. Cloud computing technology has powerful data collection functions, self-service functions, and unified resource scheduling functions. Introducing it into the human resources file management system can greatly improve management efficiency. In order to carry out information management of rural human resources, this paper develops a rural human resources management system based on the Internet of Things. This paper introduces the design scheme of rural human resource management platform based on Internet of Things technology and cloud computing technology. The design of this system mainly includes organization setting, post planning, personnel management, salary management, insurance benefits, recruitment and selection, training management, performance appraisal management, labor contract management, comprehensive inquiry, rules and regulations, employee self-help, system setting, and system management function modules. The research results show that the rural human resource management system based on cloud computing can provide a complete human resource management solution for the vast rural areas. It can only purchase services, save a lot of development and maintenance costs, and also customize functions, so as to better meet the needs of use.
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- 2022
7. Effect of lipid oxidation on the formation of Nε-carboxymethyl-lysine and Nε-carboxyethyl-lysine in Chinese-style sausage during storage
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Ligang Yu, Zhiyong He, Jie Chen, Meng Chai, and Maomao Zeng
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Chemistry ,Thiobarbituric acid ,Lysine ,Model system ,04 agricultural and veterinary sciences ,General Medicine ,040401 food science ,Analytical Chemistry ,Maillard reaction ,symbols.namesake ,Ne carboxymethyl lysine ,chemistry.chemical_compound ,0404 agricultural biotechnology ,Lipid oxidation ,hemic and lymphatic diseases ,symbols ,TBARS ,Food science ,Incubation ,Food Science - Abstract
This work aimed to investigate the effects of lipid oxidation on Ne-carboxymethyllysine (CML) and Ne-carboxyethyllysine (CEL) formation in three types of Chinese-style sausages during storage. Medium-high temperature dried sausage, naturally dehydrated sausage and smoke-dried sausage were prepared, and CML/CEL contents were measured. The result showed that CML and CEL levels increased with the increasing storage time, and an exponential correlation was found between thiobarbituric acid reactive substances (TBARs) and either CML (r2 = 0.922) or CEL (r2 = 0.921) in medium-high temperature dried sausages and smoke-dried sausage, which suggested that lipid oxidation could facilitate CML/CEL formation during storage. Furthermore, lipid oxidation and the Maillard reaction might have a synergistic effect on CML formation in Chinese-style sausages, as evidence by the results of model system during incubation. These findings indicated that lipid oxidation played a key role in CML/CEL formation during the storage of Chinese-style sausages.
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- 2018
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8. Design, synthesis and biological evaluation of novel 4-aminoquinazolines as dual target inhibitors of EGFR-PI3Kα
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Kai Chen, Jian Wang, Huai-Wei Ding, Shao-Meng Chai, Yan Zhang, Li Xin, Dan-Dan Liu, Wei Wang, Cheng-Long Deng, Shao-Jiang Song, Hong-Rui Song, and Dan-Dan Li
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0301 basic medicine ,Cell cycle checkpoint ,Cell Survival ,Class I Phosphatidylinositol 3-Kinases ,Antineoplastic Agents ,Metastasis ,Structure-Activity Relationship ,03 medical and health sciences ,0302 clinical medicine ,Drug Discovery ,Tumor Cells, Cultured ,medicine ,Humans ,Cytotoxicity ,Protein Kinase Inhibitors ,PI3K/AKT/mTOR pathway ,Cell Proliferation ,Pharmacology ,Dose-Response Relationship, Drug ,Molecular Structure ,Kinase ,Chemistry ,Akt/PKB signaling pathway ,Cell growth ,Organic Chemistry ,General Medicine ,medicine.disease ,ErbB Receptors ,030104 developmental biology ,Apoptosis ,Drug Design ,030220 oncology & carcinogenesis ,Quinazolines ,Cancer research ,Drug Screening Assays, Antitumor - Abstract
The overexpression of EGFR correlates with rapidly progressive disease, resistance to chemotherapy and poor prognosis. In certain human cancers, PI3K works synergistically with EGFR to promote proliferation, survival, invasion and metastasis. Development of dual-target drugs against EGFR and PI3K has therapeutic advantage and was an attractive approach against tumors. In this work, based on the molecular docking and previous studies, a series of 4-aminoquinazolines derivatives containing 6-sulfonamide substituted pyridyl group were rationally designed and identified as potent EGFR and PI3K dual inhibitors. The cytotoxicity experiment results showed that this series of compounds could effectively inhibit cell growth. The kinase assay demonstrated that 6c and 6i had high inhibition for EGFR and selectivity for PI3Kα distinguished from other isoforms. Further experiments showed that 6c could induce cell cycle arrest in G1 phase and apoptosis in BT549 cells. The western blot assay indicated that 6c inhibited the proliferation of BT549 cell through EGFR and PI3Kα/Akt signaling pathway. Our study suggested that compound 6c was a potential dual inhibitors of EGFR and PI3Kα.
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- 2018
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9. Effect of tobacco smoke on hydrogen sulfide-induced rat thoracic aorta relaxation
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C C Huang, C Z Liu, X Y Yu, H T Zhang, J J Sun, Meng Chai, and T Zhang
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0301 basic medicine ,Male ,Time Factors ,Physiology ,Aorta, Thoracic ,030204 cardiovascular system & hematology ,Biochemistry ,Tobacco smoke ,Rats, Sprague-Dawley ,0302 clinical medicine ,Thoracic aorta ,General Pharmacology, Toxicology and Pharmaceutics ,lcsh:QH301-705.5 ,lcsh:R5-920 ,Relaxation (psychology) ,biology ,Hydrogen sulfide ,Chemistry ,General Neuroscience ,General Medicine ,medicine.anatomical_structure ,Anesthesia ,Models, Animal ,Cardiac smooth muscle ,lcsh:Medicine (General) ,medicine.medical_specialty ,Endothelium ,medicine.drug_class ,Immunology ,Biophysics ,Ocean Engineering ,03 medical and health sciences ,Cystathionine-γ-lyase ,medicine.artery ,Internal medicine ,medicine ,Animals ,Smoke ,Aorta ,Sulfonylurea receptor-2 ,Biomedical Sciences ,Cell Biology ,equipment and supplies ,Cystathionine beta synthase ,Sulfonylurea ,Rats ,030104 developmental biology ,Endocrinology ,lcsh:Biology (General) ,biology.protein ,Tobacco Smoke Pollution ,Endothelium, Vascular - Abstract
Levels of hydrogen sulfide (H2S), a gaseous signaling molecule, are reduced in the serum of individuals who smoke. We hypothesized that tobacco smoke influenced smooth muscle relaxation by decreasing H2S levels and this effect could also influence expression of cystathionine γ-lyase (CSE) and sulfonylurea receptor-2 (SUR-2). The aim of this study was to explore the effect of tobacco smoke on H2S-mediated rat thoracic aorta relaxation and its possible mechanism. Thirty-two Sprague-Dawley rats were divided into four groups: control (C) group, short-term smoker (SS) group, mid-term smoker (MS) group, and long-term smoker (LS) group. H2S concentrations in serum, action of H2S on rat aortic vascular relaxation, and expression of CSE and SUR-2 in thoracic aortic smooth muscle were measured. Although there was no significant difference in H2S between the C and the SS groups, concentration of H2S was significantly reduced in both the LS and MS groups compared to control (P
- Published
- 2017
10. Theoretical Analysis and Experimental Study on Acoustic Emission Wave Propagation in Perforated Thin-Walled Plate
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Fang Ren, Guang Ping Zou, and Meng Chai
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Stress (mechanics) ,Physical acoustics ,Materials science ,Ground wave propagation ,Acoustic emission ,Wave propagation ,Acoustics ,Surface acoustic wave ,Acoustic wave equation ,General Medicine ,Stress concentration - Abstract
Through complex variables function, wave propagation of perforated thin-walled plates is deduced. And it is found out that the dynamical stress concentrates where the concentration parameter vertical to incident orientation is about 1.5, and with the increase of incident wave frequency, holes have less influence on the dynamical stress concentration during wave propagation. With the help of acoustic emission technique, holes do not have much effect on nondestructive test of acoustic emission.
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- 2013
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11. Calculation for Elastic Global Buckling of Sandwich Plates with Ribs
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Guang Ping Zou, Ye Wu, Meng Chai, Hai Lin Xiong, and Qi Chao Xue
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Materials science ,business.industry ,media_common.quotation_subject ,General Medicine ,Structural engineering ,Inertia ,Core (optical fiber) ,Stress (mechanics) ,Buckling ,Plate theory ,Energy method ,Boundary value problem ,business ,media_common - Abstract
Based on Reissner’s sandwich plate theory, the critical globlal buckling equation of sandwich plate with ribs is deduced by energy method under simple support boundary conditions. And the critical buckling solution is obtained and discussed here. Afterwards a rectangular sandwich plate with steel faceplate and polyurthane core is taken as an example. The influence on critical global buckling stress with different inertia moments in rectangular sandwich plates are discussed. simularly the effect of the lengh ratio of two sides and the thickness of rectangular sandwich plate are also studied.
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- 2012
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