239 results on '"Zhi Qiang Yang"'
Search Results
2. Composite scattering characteristics analysis of micro-ellipsoidal periodic structure optical surface and microdefects
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Zhi-qiang Yang, Juan Chen, Li-guo Wang, Li-hong Yang, Yao Li, Zhen-sen Wu, and Lei Gong
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Light scattering ,Micro-ellipsoidal periodic structure optical surface ,Microdefects ,Field distribution ,Science (General) ,Q1-390 ,Social sciences (General) ,H1-99 - Abstract
In order to adjust and detect micro-nano periodic structure optical surface accurately and efficiently, the problem of composite scattering between micro-ellipsoidal periodic structure optical surface and pore defects is studied use the multi-resolution time domain (MRTD) approach. A calculation model is established for the intensity distribution of composite scattering, which is modulated by the micro-ellipsoidal periodic structure optical surface and microdefects. Results are in good agreement with those obtained using CST Microwave Studio software and the finite-different time-domain (FDTD) approach, which demonstrates the effectiveness of the calculation model and method. By combining the field distribution of the micro-ellipsoidal periodic structure optical surface containing microdefects with the optical response at different wavelengths, it is necessary to study the influence of various parameters of the micro-ellipsoidal structure and microdefects on the optical system of metamaterials. The effects of the parameters such as roughness, structure of micro-ellipsoidal unit, defect sizes and buried depths on the composite scattering characteristics are analyzed numerically. The results provide technical support for the fields of functional surface design, ultrasensitive detection, scattering peak orientation and frequency selection.
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- 2024
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3. Synthesis, Characterization, and Physicochemical Properties of New [Emim][BF3X] Complex Anion Ionic Liquids
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Ji-Jun Zeng, Bo Zhao, Yu An, Xiao-Bo Tang, Sheng Han, Zhi-Qiang Yang, Wei Zhang, and Jian Lu
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Chemistry ,QD1-999 - Published
- 2023
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4. Curriculum design and outcomes analysis of cochlear implant training course
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WEI Xing-mei, GAO Zhi-qiang, YANG Hua, SHANG Ying-ying, TIAN Xu, ZHAO Yang, FENG Guo-dong
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cochlear implant ,training course ,subtotal petrosectomy ,anatomy, facial nerve recess ,Medicine - Abstract
Objective To analyze the course design and training outcomes of cochlear implant special training course, and to explore the training methods for otology microsurgeons to master cochlear implant technology. Methods Among the 24 students, 33% are senior (8/24), 17% are deputy senior (4/24), 50% are intermediate(12/24), In terms of Degree distribution,58% are PhD, 25% are master and 17% are bachelor. Totally 92%(22/24) of the trainees believed that the training was very helpful for surgery, and but 8%(2/24) of them thought the outcome of the training was not so helpful. The most helpful part of the training is the facial nerve recess approach technology. The highest score for participating in the class was the training method of cochlear implant surgery, which could be improved constantly in accordance with the training method when back to their own hospitals. As for the organization and course setting, the teaching method of step by step scored the highest for the, followed by the course setting including the facial nerve recess approach, subtotal petrosectomy and transotic approach. Conclusions The teaching methods of step by step, centralized comments and discussion helps trainees to understand the cochlear implant technology quickly.
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- 2021
5. Deterioration of the fixation segment’s stress distribution and the strength reduction of screw holding position together cause screw loosening in ALSR fixed OLIF patients with poor BMD
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Jing-Chi Li, Zhi-Qiang Yang, Tian-Hang Xie, Zhe-Tao Song, Yue-Ming Song, and Jian-Cheng Zeng
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oblique lumbar interbody fusion ,screw loosening ,biomechanical deterioration ,anterior lateral single rod fixation ,screw holding plane ,stress distribution ,Biotechnology ,TP248.13-248.65 - Abstract
The vertebral body’s Hounsfield unit (HU) value can credibly reflect patients’ bone mineral density (BMD). Given that poor bone-screw integration initially triggers screw loosening and regional differences in BMD and strength in the vertebral body exist, HU in screw holding planes should better predict screw loosening. According to the stress shielding effect, the stress distribution changes in the fixation segment with BMD reduction should be related to screw loosening, but this has not been identified. We retrospectively collected the radiographic and demographic data of 56 patients treated by single-level oblique lumbar interbody fusion (OLIF) with anterior lateral single rod (ALSR) screw fixation. BMD was identified by measuring HU values in vertebral bodies and screw holding planes. Regression analyses identified independent risk factors for cranial and caudal screw loosening separately. Meanwhile, OLIF with ALSR fixation was numerically simulated; the elastic modulus of bony structures was adjusted to simulate different grades of BMD reduction. Stress distribution changes were judged by computing stress distribution in screws, bone-screw interfaces, and cancellous bones in the fixation segment. The results showed that HU reduction in vertebral bodies and screw holding planes were independent risk factors for screw loosening. The predictive performance of screw holding plane HU is better than the mean HU of vertebral bodies. Cranial screws suffer a higher risk of screw loosening, but HU was not significantly different between cranial and caudal sides. The poor BMD led to stress concentrations on both the screw and bone-screw interfaces. Biomechanical deterioration was more severe in the cranial screws than in the caudal screws. Additionally, lower stress can also be observed in fixation segments’ cancellous bone. Therefore, a higher proportion of ALSR load transmission triggers stress concentration on the screw and bone-screw interfaces in patients with poor BMD. This, together with decreased bony strength in the screw holding position, contributes to screw loosening in osteoporotic patients biomechanically. The trajectory optimization of ALSR screws based on preoperative HU measurement and regular anti-osteoporosis therapy may effectively reduce the risk of screw loosening.
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- 2022
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6. Molecular Characteristics of m6A Regulators and Tumor Microenvironment Infiltration in Soft Tissue Sarcoma: A Gene-Based Study
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Kang-Wen Xiao, Zhi-Qiang Yang, Xin Yan, Zhi-Bo Liu, Min Yang, Liang-Yu Guo, and Lin Cai
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m6A ,soft tissue sarcoma ,immunotherapy ,tumor microenvironment ,survival ,Biotechnology ,TP248.13-248.65 - Abstract
Background: N6-methyladenosine (m6A) methylation played a key role in tumor growth. However, the relationship between m6A and soft tissue sarcoma (STS) was still unclear.Methods: The characterization and patterns of m6A modification in STS (TCGA-SARC and GSE17674) were analyzed comprehensively through bioinformatics and real-time polymerase chain reaction (RT-PCR). The effects of different m6A modification patterns on prognosis and immune infiltration of STS were further explored. Differentially expressed gene (DEG) analysis was performed. Moreover, an m6Ascore was constructed by principal component analysis (PCA). In addition, two immunotherapy datasets (IMvigor210 and GSE78220) and a sarcoma dataset (GSE17618) were used to evaluate the m6Ascore.Results: Huge differences were found in somatic mutation, CNV, and expression of 25 m6A regulators in STS. Two modification patterns (A and B) in STS were further identified and the m6A cluster A showed a better clinical outcome with a lower immune/stromal score compared with the m6A cluster B (p < 0.050).In addition to , most STS samples from m6A cluster A showed a high m6Ascore, which was related to mismatch repair and a better prognosis of STS (p < 0.001). In contrast, the m6A cluster B, characterized by a low m6Ascore, was related to the MYC signaling pathway, which led to a poor prognosis of STS. A high m6Ascore also contributed to a better outcome of PD-1/PD-L1 blockade immunotherapy.Conclusion: The modification patterns of 25 m6A regulators in the STS microenvironment were explored comprehensively. The novel m6Ascore effectively predicted the characteristics of the tumor microenvironment (TME) and outcome in STS and provided novel insights for future immunotherapy.
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- 2022
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7. Sarcopenia predicts prognosis of patients with renal cell carcinoma: A systematic review and meta-analysis
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Xu Hu, Du-Wu Liao, Zhi-Qiang Yang, Wei-Xiao Yang, San-Chao Xiong, and Xiang Li
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Sarcopenia ,Carcinoma, Renal ,Cell ,Meta-Analysis [Publication Type] ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
ABSTRACT Sarcopenia, a concept reflecting the loss of skeletal muscle mass, was reported to be associated with the prognosis of several tumors. However, the prognostic value of sarcopenia in patients with renal cancer remains unclear. We carried out this metaanalysis and systematic review to evaluate the prognostic value of sarcopenia in patients with renal cell carcinomas. We comprehensively searched PubMed, Embase, and Cochrane Library from inception to December 2018. Hazard ratio (HR) and 95% confidence interval (CI) were pooled together. A total of 5 studies consisting of 771 patients were enrolled in this quantitative analysis, 347 (45.0%) of which had sarcopenia. Patients with sarcopenia had a worse OS compared with those without sarcopenia (HR=1.76; 95%CI, 1.35-2.31; P
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- 2020
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8. Preoperative systemic immune-inflammation index predicts prognosis of patients with non-metastatic renal cell carcinoma: a propensity score-matched analysis
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Xu Hu, Yan-Xiang Shao, Zhi-Qiang Yang, Wei-Chao Dou, San-Chao Xiong, and Xiang Li
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Systemic immune-inflammation index ,Renal cell carcinoma ,Non-metastatic ,Prognosis ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 ,Cytology ,QH573-671 - Abstract
Abstract Background A novel systemic immune-inflammation index (SII), based on the neutrophils, lymphocytes and platelet counts, is associated with the prognosis of several cancers. The present study evaluates the prognostic significance of SII in non-metastatic renal cell carcinoma (RCC). Method The present study retrospectively reviewed the medical record of patients with non-metastatic RCC who underwent nephrectomy between 2010 and 2013. Receiver operating characteristic (ROC) curve analysis was performed to identify the optimal cut-off value. In addition, the propensity score matching (PSM) was performed with a matching ratio of 1:1. Univariate and multivariate Cox proportional hazards models were used to identify the prognostic factors. The results were reported by hazard ratio (HR) with 95% confidence interval (95% CI). Results A total of 646 patients were included in the final analysis. High SII group (> 529) was significantly associated with older age (P = 0.014), larger tumor (P
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- 2020
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9. Crocetin: A Systematic Review
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Zi-Liang Guo, Mao-Xing Li, Xiao-Lin Li, Peng Wang, Wei-Gang Wang, Wei-Ze Du, Zhi-Qiang Yang, Sheng-Fu Chen, Di Wu, and Xiu-Yu Tian
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crocetin ,crocetin derivatives ,distribution ,pharmacological activity ,pharmacokinetics ,toxicity ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Crocetin is an aglycone of crocin naturally occurring in saffron and produced in biological systems by hydrolysis of crocin as a bioactive metabolite. It is known to exist in several medicinal plants, the desiccative ripe fruit of the cape jasmine belonging to the Rubiaceae family, and stigmas of the saffron plant of the Iridaceae family. According to modern pharmacological investigations, crocetin possesses cardioprotective, hepatoprotective, neuroprotective, antidepressant, antiviral, anticancer, atherosclerotic, antidiabetic, and memory-enhancing properties. Although poor bioavailability hinders therapeutic applications, derivatization and formulation preparation technologies have broadened the application prospects for crocetin. To promote the research and development of crocetin, we summarized the distribution, preparation and production, total synthesis and derivatization technology, pharmacological activity, pharmacokinetics, drug safety, drug formulations, and preparation of crocetin.
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- 2022
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10. Waveform Distortion of Gaussian Beam in Atmospheric Turbulence Simulated by Phase Screen Method
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Zhi-Qiang Yang, Li-hong Yang, Lei Gong, Liguo Wang, and Xinyi Wang
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Mathematics ,QA1-939 - Abstract
The atmospheric turbulence phase screen is generated based on the power spectrum inversion method, and the multiple transmission processes are statistically averaged. The waveform distortion of the Gaussian beam in the atmospheric turbulence is analyzed; the simulation results show that the property of Gaussian beam has been destroyed after its passing through the atmospheric turbulence. When the beam waist radius is close to a certain radius, the degree of change becomes larger. When it approaches the critical value, the wave surface no longer changes sharply, and as the turbulence intensity increases, the phase fluctuation becomes more and more severe, the coherence of the beam is destroyed, and the spot may be split into several pieces. Finally, the relationship of intensity fluctuation, amplitude fluctuation, and bit error rate with distance is analyzed.
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- 2022
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11. Nutritional Risk Index Improves the GRACE Score Prediction of Clinical Outcomes in Patients With Acute Coronary Syndrome Undergoing Percutaneous Coronary Intervention
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Xiao-Teng Ma, Qiao-Yu Shao, Qiu-Xuan Li, Zhi-Qiang Yang, Kang-Ning Han, Jing Liang, Hua Shen, Xiao-Li Liu, Yu-Jie Zhou, and Zhi-Jian Wang
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nutritional risk index (NRI) ,GRACE score ,acute coronary syndrome (ACS) ,percutaneous coronary intervention ,diabetes ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background: Malnutrition has been shown to be associated with adverse cardiovascular outcomes in many patient populations.Aims: To investigate the prognostic significance of malnutrition as defined by nutritional risk index (NRI) in patients with acute coronary syndrome (ACS) undergoing percutaneous coronary intervention (PCI) and whether NRI could improve the GRACE score based prognostic models.Methods: This study applied NRI among 1,718 patients with ACS undergoing PCI. Patients were divided into three nutritional risk groups according to their baseline NRI: no nutritional risk (NRI ≥ 100), mild nutritional risk (97.5 ≤ NRI
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- 2021
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12. Negative pressure pulmonary edema after percutaneous endoscopic interlaminar lumbar discectomy-a case report
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Guo Chen, Xian-di Wang, Hong-fei Nie, Zhi-qiang Yang, Kang Chen, Zhu-hai Li, Yue-ming Song, Fu-xing Pei, and Jian-cheng Zeng
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Percutaneous endoscopic lumbar discectomy ,Negative pressure pulmonary edema ,Complications ,Diseases of the musculoskeletal system ,RC925-935 - Abstract
Abstract Background Negative pressure pulmonary edema (NPPE) is a rare complication that is more prevalent in young patients. NPPE usually results from acute upper airway obstruction, which is most commonly caused by laryngospasm during extubation. NPPE is characterized by the sudden onset of coughing, hemoptysis, tachycardia, tachypnea, and hypoxia, and is dramatically improved with supportive care, which prevents severe sequelae. To our knowledge, there is no report of a patient developing NPPE after percutaneous endoscopic interlaminar lumbar discectomy. Case presentation Herein, we report the case of a 22-year-old amateur basketball player with L5/S1 disc herniation who developed NPPE during extubation after general anesthesia for a minimally invasive spinal surgery (percutaneous endoscopic interlaminar lumbar discectomy). The NPPE was treated by maintaining the airway patency, applying positive-pressure ventilation, administering dexamethasone and antibiotics, and limiting the volume of fluid infused. The patient had an uneventful postoperative course, and was discharged to his home on postoperative day 3. Conclusions Although NPPE is an infrequent complication, especially in patients undergoing percutaneous endoscopic interlaminar lumbar discectomy, this case report highlights the importance of early diagnosis and prompt treatment of NPPE to prevent the development of potentially fatal complications.
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- 2018
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13. Clinical observation of scleral buckling with nondrainage of subretinal fluid in the treatment of rhegmatogenous retinal detachment
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Gui Zhang, Zhong-Kai Li, Zhi-Qiang Yang, and Jun Liu
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rhegmatogenous retinal detachment ,scleral buckling ,nondrainage of subretinal fluid ,scleral cryotherapy ,Ophthalmology ,RE1-994 - Abstract
AIM:To investigate the clinical effect of scleral buckling with nondrainage of subretinal fluid in the treatment of rhegmatogenous retinal detachment. METHODS: A total of 111 patients(113 eyes)with rhegmatogenous retinal detachment in our hospital from January 2012 to January 2017 were retrospectively reviewed. All the patients were identified as fulfilling the criteria of rhegmatogenous retinal detachment. Localization and scleral cryotherapy of retinal breaks with binocular indirect ophthalmoscopy in all eyes were performed during the operations. Simple scleral pressure were performed in 98 eyes. Intravitreal injection of sterile air were performed in 15 eyes. Scleral cryotherapy were performed in all cases with retinal degeneration and breaks. Anterior chamber puncture were performed before ligation suture. The final retinal reattachment rate, best corrected vision acuity, intraocular pressure and complications were observed. RESULTS: The mean follow-up period was 6mo after operation. The final retinal reattachment rate at 6mo was 97.4%. There were 91 eyes(80.5%)with improved visual acuity after operation. High intraocular pressure can be controlled after operation. Complications were occurred in 7 eyes in the operation, 3 eyes postoperatively. CONCLUSION: The surgery of scleral buckling with nondrainage of subretinal fluid have few complications and is effective.
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- 2017
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14. Mortality of Escalation and Modulation Antithrombotic Therapy in Coronary Artery Disease Patients: A Meta-analysis of Randomized Controlled Trials
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Qiao-Yu Shao, Zhi-Jian Wang, Xiao-Teng Ma, Yu-Fei Wang, Qiu-Xuan Li, Zhi Qiang Yang, Xu-Ze Lin, Liu Pan, Fei Gao, Li Xia Yang, Jing Liang, and Yu-Jie Zhou
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Hematology - Abstract
Background The net clinical benefit of antithrombotic therapy (ATT) reflects the concomitant effects of bleeding and ischemic events. Objectives We sought to assess the overall effect of the modulation or escalation of ATT on all-cause mortality as well as ischemic and bleeding events. Methods We performed a meta-analysis of randomized controlled trials comparing escalation or modulation of ATT versus standard ATT in patients with coronary artery disease. A total of 32 studies with 160,659 subjects were enrolled in this analysis. Results Neither escalation nor modulation of ATT has significant effect on all-cause mortality (escalation: relative risk [RR]: 0.94, 95% confidence interval [CI]: 0.85–1.04; modulation: RR: 0.90; 95% CI: 0.81–1.01). Compared with standard ATT therapy, escalation of ATT was associated with lower risk of myocardial infarction (MI; RR: 0.84, 95% CI: 0.76–0.94), but had a higher risk of major or minor bleeding (RR: 1.38, 95% CI: 1.15–1.66). Modulation of ATT was associated with a similar risk of MI (RR: 1.07, 95% CI: 0.96–1.19), but a reduced risk for major or minor bleeding (RR: 0.58, 95% CI: 0.51–0.66). Meta-regression combining both escalation and modulation studies found that the heterogeneity of all-cause mortality was mainly attributed to the heterogeneity of major or minor bleeding (adjusted R-squared = 100.00%, p = 0.004), but not to MI. Conclusion Either escalation or modulation of ATT has little benefit in all-cause mortality. The variability of the treatment effects on all-cause mortality was mainly attributed to the variability of major or minor bleeding, but not to MI.
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- 2022
15. Concomitant occurrences of pulmonary embolism and acute myocardial infarction in acute coronary syndrome patient undergoing percutaneous coronary intervention: a case report.
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Zhi-Qiang YANG, Shu-Tong DONG, Qiao-Yu SHAO, Yu-Fei WANG, Qiu-Xuan LI, Zai-Qiang LIU, Xiao-Teng MA, Jing LIANG, Dong-Mei SHI, Yu-Jie ZHOU, Fei GAO, and Zhi-Jian WANG
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MYOCARDIAL infarction diagnosis ,ECHOCARDIOGRAPHY ,ENOXAPARIN ,PULMONARY embolism ,PERCUTANEOUS coronary intervention ,TRANSLUMINAL angioplasty ,DRUG-eluting stents ,MYOCARDIAL infarction ,ACUTE coronary syndrome ,MAGNETIC resonance imaging ,CORONARY angiography ,TREATMENT effectiveness ,CORONARY artery disease ,ELECTROCARDIOGRAPHY ,MYOCARDIAL revascularization ,LOW-molecular-weight heparin ,FIBRIN fibrinogen degradation products - Published
- 2023
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16. Antibacterial Effect and Mode of Action of Flavonoids From Licorice Against Methicillin-Resistant Staphylococcus aureus
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Shuai-Cheng Wu, Zhi-Qiang Yang, Fei Liu, Wen-Jing Peng, Shao-Qi Qu, Qian Li, Xiang-Bin Song, Kui Zhu, and Jian-Zhong Shen
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flavonoids ,glabrol ,MRSA ,mode of action ,licorice ,Microbiology ,QR1-502 - Abstract
Staphylococcus aureus is a bacterial pathogen that causes food poisoning, various infections, and sepsis. Effective strategies and new drugs are needed to control S. aureus associated infections due to the emergence and rapid dissemination of antibiotic resistance. In the present study, the antibacterial activity, potential mode of action, and applications of flavonoids from licorice were investigated. Here, we showed that glabrol, licochalcone A, licochalcone C, and licochalcone E displayed high efficiency against methicillin-resistant Staphylococcus aureus (MRSA). Glabrol, licochalcone A, licochalcone C, and licochalcone E exhibited low cytotoxicity without hemolytic activity based on safety evaluation. Glabrol displayed rapid bactericidal activity with low levels of resistance development in vitro. Meanwhile, glabrol rapidly increased bacterial membrane permeability and dissipated the proton move force. Furthermore, we found that peptidoglycan, phosphatidylglycerol, and cardiolipin inhibited the antibacterial activity of glabrol. Molecular docking showed that glabrol binds to phosphatidylglycerol and cardiolipin through the formation of hydrogen bonds. Lastly, glabrol showed antibacterial activity against MRSA in both in vivo and in vitro models. Altogether, these results suggest that glabrol is a promising lead compound for the design of membrane-active antibacterial agents against MRSA and can be used as a disinfectant candidate as well.
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- 2019
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17. Adaptive Fuzzy CMAC Design for an Omni-directional Mobile Robot.
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Ter-Feng Wu, Hsu-Chih Huang, Pu-Sheng Tsai, Nien-Tsu Hu, and Zhi-Qiang Yang
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- 2014
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18. Microstructure and Mechanical Properties of Vacuum Diffusion Bonded Joints between Commercial Pure Titanium and Medium Carbon Steelmicrostructure and Mechanical Properties of Vacuum Diffusion Bonded Joints between Commercial Pure Titanium and Medium Carbon Steelmicrostructure and Mechanical Properties of Vacuum Diffusion Bonded Joints between Commercial Pure Titanium and Medium Carbon Steel
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Xuan Chen, Han Xiao, Ya-ming Shi, Cheng Qian, Qing-biao Zhang, Peng Shao, Zhi-qiang Yang, and Kun Liu
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- 2023
19. Causal associations between blood pressure and the risk of myocardial infarction: A bidirectional Mendelian randomization study
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Zhi-Qiang, Yang, Ting-Ting, Fan, Zheng, Wang, Wan-Ting, Zhou, Zhen-Xian, Wang, Yan, Tan, Qi, Wu, and Bang-Long, Xu
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Cardiology and Cardiovascular Medicine - Abstract
IntroductionMany observational studies imply elevated blood pressure (BP) as a leading risk factor for incident myocardial infarction (MI), but whether this relationship is causal remains unknown. In this study, we used bidirectional Mendelian randomization (MR) to investigate the potential causal association of BP levels with the risk of MI.MethodsGenetic variants associated with BP and MI traits were retrieved from the International Consortium of Blood Pressure (N = 7,57,601) and UKB (N = 3,61,194), obtaining 1,26,40,541 variants. We used two-sample MR (TSMR) analyses to examine the potential bidirectional causal association of systolic BP (SBP), diastolic BP (DBP) and pulse pressure (PP) with MI.ResultsThe forward MR analysis identified a potentially causal association between MI and BP except PP[odds ratio (OR) SBP: 1.0008, P = 1.911 × 10−22; ORDBP: 1.0014, P = 1.788 × 10−28;odds ratio (OR)pp: 1.0092, P = 0.179]. However, the reverse analysis suggested no causal relation (betaSBP: 5.469, P = 0.763; betaDBP: 3.624, P = 0.588; betaPP: −0.074, P = 0.912). These findings were robust in sensitivity analyses such as the MR–Egger method, the maximum likelihood method and the MR pleiotropy residual sum and outlier test (MR-PRESSO). No horizontal pleiotropy (p = 0.869 for SBP, p = 0.109 for DBP and p = 0.978 for PP in the forward results and p = 0.168 for SBP, P = 0.892 for DBP and p = 0.989 for PP in the reverse results) was observed.ConclusionsElevated SBP or DBP levels increase the risk of MI, but there is no causal relationship between MI and changes in BP including PP. Independent of other risk factors, optimal BP control might represent an important therapeutic target for MI prevention in the general population.
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- 2022
20. The influence of bonding time on microstructure and mechanical properties of vacuum diffusion bonded joints between commercial pure titanium and medium carbon steel
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Xuan Chen, Han Xiao, Ya-ming Shi, Cheng Qian, Qing-biao Zhang, Peng Shao, Zhi-qiang Yang, Zhi-rong Huang, and Kun Liu
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Condensed Matter Physics ,Instrumentation ,Surfaces, Coatings and Films - Published
- 2023
21. Genomic and Phenotypic Analysis of Persistent Carbapenem-Resistant Klebsiella pneumoniae Isolates from a 5-Year Hospitalized Patient
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Rong Zhang, Shuangyang Ding, Qiaoling Sun, Kui Zhu, Shang Chen, and Zhi-Qiang Yang
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Microbiology (medical) ,Pharmacology ,Serotype ,Microbiological culture ,medicine.drug_class ,Klebsiella pneumoniae ,Immunology ,Antibiotics ,Virulence ,Biology ,biology.organism_classification ,Microbiology ,Plasmid ,Carriage ,medicine ,Sputum ,medicine.symptom - Abstract
The emerging epidemic of carbapenem-resistant Klebsiella pneumoniae (CRKP) is a global public health crisis. However, the phylogenetic affiliation and pathotypic status of CRKP strains in the host colonization period under consistent antibiotic treatments are not well characterized. In this study, a 5-year tracking study was performed, in which a patient admitted to an intensive care unit was recruited and then screened for the carriage of CRKP based on microbiological culture. Nine isolates from the sputum or stool samples were acquired and subjected to real-time whole-genome sequencing, antimicrobial susceptibility testing, Galleria mellonella larval infection, and epithelial cell invasion assay. All nine isolates showed phenotypic resistance to carbapenems, quinolones, and aminoglycosides. Altogether, blaKPC-2 and 10 other antibiotic resistance genes were identified and all nine CRKP isolates exhibited low virulence with more than 38 virulence factors. All but one variant belonged to ST11 with a novel sequence type, differing at the phoE locus. The isolates shared the same plasmid replicon type, prophages, and capsular serotype (K47) with few single-nucleotide polymorphism variations, consistent with epidemiological clones. Furthermore, these CRKP isolates displayed the ability of moderate invasion of lung epithelial cells. Meanwhile, a deficiency of chromosomal type IV secretion system-related gene cluster was detected after 2 years of carriage. Our findings demonstrated that low-virulence CRKP clones could colonize in the gut and respiratory tract under multiple antibiotic stresses, suggesting the strong colonization adaptability of CRKP to the host. Ethical approval was given by The Second Affiliated Hospital of Zhejiang University, School of Medicine, (2018-039).
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- 2021
22. Prognostic significance of multiple triglycerides-derived metabolic indices in patients with acute coronary syndrome
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Qiao-Yu, Shao, Xiao-Teng, Ma, Zhi-Qiang, Yang, Qiu-Xuan, Li, Yu-Fei, Wang, Jing, Liang, Hua, Shen, Xiao-Li, Liu, Yu-Jie, Zhou, Dong-Mei, Shi, and Zhi-Jian, Wang
- Abstract
Triglyceride (TG) and its related metabolic indices, all recognized as surrogates of insulin resistance, have been demonstrated to be relevant to clinical prognosis. However, the relative value of these TG-related indices for predicting cardiovascular events among patients with acute coronary syndrome (ACS) has not been examined.The TG, the triglyceride-glucose (TyG) index, the atherogenic index of plasma, TG to high-density lipoprotein cholesterol ratio, and the lipoprotein combine index were assessed in 1694 ACS patients undergoing percutaneous coronary intervention. The primary endpoint was major adverse cardiovascular event (MACE), which was the composite of all-cause mortality, stroke, myocardial infarction, or unplanned repeat revascularization.During a median follow-up of 31 months, 345 patients (20.4%) had MACE. The risk of the MACE was increased with higher TG and the four TG-derived metabolic indices [TG-adjusted hazard ratio (HR) = 1.002, 95% CI: 1.001-1.003; TyG index-adjusted HR = 1.736, 95% CI: 1.398-2.156; atherogenic index of plasma-adjusted HR = 2.513, 95% CI: 1.562-4.043; TG to high-density lipoprotein cholesterol ratio-adjusted HR = 1.148, 95% CI: 1.048-1.258; and lipoprotein combine index-adjusted HR = 1.009, 95% CI: 1.004-1.014;TG and TG-derived metabolic indices were all strongly associated with MACE among ACS patients undergoing percutaneous coronary intervention. Among all the indices, TyG index showed the best ability to predict the risk of MACE.
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- 2022
23. A Double-Layer Scheme for Extrapolating Terahertz Complex Refractivity from Reflectance of Aerocraft Materials
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Yuan Mou, Mao-rong Wang, Zhi-qiang Yang, Yan-qin Gao, and Bi-yi Wu
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Condensed Matter Physics ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials - Published
- 2023
24. Nonlinear dynamic characteristics of a hysteretic TMD and its application on a tall building
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Yi Hui, Zhi-Qiang Yang, Qipan Ruan, Ke Li, and Lianjin Bao
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Mechanics of Materials ,Architecture ,Building and Construction ,Safety, Risk, Reliability and Quality ,Civil and Structural Engineering - Published
- 2023
25. A Novel Curcumin Derivatives Fluorescent Probe for Selective Recognition of Cysteine
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Zhi-qiang Yang, Fan Luo, Dong-bin Zheng, and Yun Deng
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chemistry.chemical_compound ,Radiation ,Materials science ,chemistry ,Curcumin ,Condensed Matter Physics ,Fluorescence ,Combinatorial chemistry ,Electronic, Optical and Magnetic Materials ,Cysteine - Published
- 2021
26. Association of 5-alpha-reductase inhibitor and prostate cancer incidence and mortality: a meta-analysis
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Yan-Xiang Shao, Yao-Hui Wang, Wei-Xiao Yang, Zhi-Qiang Yang, Xu Hu, and Xiang Li
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Oncology ,medicine.medical_specialty ,business.industry ,Urology ,Incidence (epidemiology) ,Cochrane Library ,medicine.disease ,law.invention ,Prostate cancer ,5 Alpha-Reductase Inhibitor ,Reproductive Medicine ,Randomized controlled trial ,law ,Relative risk ,Internal medicine ,Meta-analysis ,Medicine ,Original Article ,business ,Cohort study - Abstract
BACKGROUND: 5-Alpha-reductase inhibitors (5-ARIs) have been suggested as potential chemopreventive agents for prostate cancer (PCa). This study was conducted to evaluate the effect of 5-ARIs on the incidence and mortality of PCa. METHODS: The PubMed, Embase and Cochrane Library databases were searched comprehensively from database inception to October 2019. The clinical outcomes included the incidence of overall PCa, high-grade (Gleason8-10) PCa, metastatic PCa, overall survival (OS), and cancer-specific survival (CSS). RESULTS: Overall, 23 studies were included in the present study, representing 11 cohort studies, 5 case-control studies, and 8 randomized controlled trials. The use of 5-ARIs was associated with a decreased risk of overall PCa [relative risk (RR) =0.77; 95% CI: 0.67–0.88; P
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- 2020
27. Stepwise reduction of bone mineral density increases the risk of cage subsidence in oblique lumbar interbody fusion patients biomechanically: an in-silico study
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Zhi-Qiang Yang, Ping Cai, Jing-Chi Li, Xian-Di Wang, Tian-Hang Xie, Xing-Xiao Pu, Run Lin, Jian-Cheng Zeng, and Yue-Ming Song
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Spinal Fusion ,Lumbar Vertebrae ,Rheumatology ,Bone Density ,Pedicle Screws ,Cadaver ,Humans ,Osteoporosis ,Orthopedics and Sports Medicine ,Biomechanical Phenomena - Abstract
Background Cage subsidence causes poor prognoses in patients treated by oblique lumbar interbody fusion (OLIF). Deterioration of the biomechanical environment initially triggers cage subsidence, and patients with low bone mineral density (BMD) suffer a higher risk of cage subsidence. However, whether low BMD increases the risk of cage subsidence by deteriorating the local biomechanical environment has not been clearly identified. Methods OLIF without additional fixation (stand-alone, S-A) and with different additional fixation devices (AFDs), including anterolateral single rod screws (ALSRs) and bilateral pedicle screws (BPSs) fixation, was simulated in the L4-L5 segment of a well-validated finite element model. The biomechanical effects of different BMDs were investigated by adjusting the material properties of bony structures. Biomechanical indicators related to cage subsidence were computed and recorded under different directional moments. Results Overall, low BMD triggers stress concentration in surgical segment, the highest equivalent stress can be observed in osteoporosis models under most loading conditions. Compared with the flexion-extension loading condition, this variation tendency was more pronounced under bending and rotation loading conditions. In addition, AFDs obviously reduced the stress concentration on both bony endplates and the OLIF cage, and the maximum stress on ALSRs was evidently higher than that on BPSs under almost all loading conditions. Conclusions Stepwise reduction of BMD increases the risk of a poor local biomechanical environment in OLIF patients, and regular anti-osteoporosis therapy should be considered an effective method to biomechanically optimize the prognosis of OLIF patients.
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- 2022
28. Development and validation of a prognostic nomogram for predicting cancer‐specific survival after radical cystectomy in patients with bladder cancer:A population‐based study
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Ping Han, Maoying Liu, Zhi-Qiang Yang, Xu Hu, and Yunjin Bai
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Male ,0301 basic medicine ,Oncology ,Cancer Research ,Databases, Factual ,genetic structures ,medicine.medical_treatment ,urologic and male genital diseases ,0302 clinical medicine ,radical cystectomy ,Original Research ,Aged, 80 and over ,Middle Aged ,Prognosis ,SEER database ,Survival Rate ,030220 oncology & carcinogenesis ,Cohort ,bladder cancer ,Female ,medicine.medical_specialty ,Concordance ,Cystectomy ,Risk Assessment ,nomogram ,03 medical and health sciences ,Internal medicine ,medicine ,Humans ,Radiology, Nuclear Medicine and imaging ,Aged ,Neoplasm Staging ,Retrospective Studies ,Bladder cancer ,Receiver operating characteristic ,Proportional hazards model ,business.industry ,Clinical Cancer Research ,Nomogram ,medicine.disease ,United States ,Nomograms ,030104 developmental biology ,ROC Curve ,Urinary Bladder Neoplasms ,T-stage ,business ,SEER Program - Abstract
Purpose To establish a prognostic model to estimate the cancer‐specific survival (CSS) for urothelial carcinoma of bladder (UCB) patients after radical cystectomy (RC). Methods A total of 8650 candidates (2004–2011) obtained from the Surveillance, Epidemiology, and End Results (SEER) database were randomly split into development cohort (n = 4323) and validation cohort (n = 4327). We performed Cox regression analysis to identify prognostic factors and Kaplan‐Meier analysis to assess survival outcome. A nomogram predicting CSS was constructed. Its performance was validated by calibration curves, the receiver operating characteristic (ROC) curves, concordance index (C‐index), decision curve analysis (DCA), the net reclassification improvement (NRI), and the integrated discrimination improvement (IDI). Results The nomogram incorporated marital status, T stage, N stage, tumor size, and chemotherapy. In validation cohort, C‐index of the nomogram was 0.707. AUC of the nomogram and AJCC stage were 0.767 versus 0.674. Calibration plots for 3‐ and 5‐year CSS displayed good concordance. DCA curves of the nomogram exhibited larger benefits than the AJCC stage. The NRI and IDI indicated the nomogram outperformed AJCC stage. Conclusions We have established a prognostic nomogram with improved discriminative ability and clinical benefits for UCB patients after RC. The nomogram alongside an easy access web tool may assist clinicians in optimizing the postoperative management., This population‐based study has established a nomogram and its derived webserver to predict cancer‐specific survival probabilities for patients with urothelial carcinoma of the bladder after radical cystectomy. The model’s discriminative abilities, accuracy and clinical benefits were validated and performed better than traditional AJCC stage.
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- 2020
29. Targeted Inhibition of P4HB Promotes Cell Sensitivity to Gemcitabine in Urothelial Carcinoma of the Bladder
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Ping Han, Yunjin Bai, Xin Wei, Ao Li, Yin Tang, Yubo Yang, Dengxiong Li, Wuran Wei, Facai Zhang, Xiaoming Wang, Dechao Feng, and Zhi-Qiang Yang
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0301 basic medicine ,Bladder cancer ,Chemistry ,Cell growth ,Cell cycle ,CHOP ,medicine.disease ,Gemcitabine ,03 medical and health sciences ,030104 developmental biology ,0302 clinical medicine ,Oncology ,Apoptosis ,Cell culture ,030220 oncology & carcinogenesis ,medicine ,Cancer research ,Pharmacology (medical) ,Viability assay ,medicine.drug - Abstract
Background Bladder cancer (BC) is a common malignancy worldwide that accounts for 3% of global cancer diagnoses. Chemotherapy resistance limits the therapeutic effect of chemotherapeutic agents in patients with BC. Prolyl 4-hydroxylase, beta polypeptide (P4HB) is an endoplasmic reticulum (ER) chaperone that is upregulated in bladder cancer tissues (The Cancer Genome Atlas, TCGA datasets). Knockdown or suppression of P4HB exerts anticancer activity and sensitizes cells to chemotherapy in various types of cancer. Purpose We aimed to investigate whether the inhibition of P4HB enhances the anticancer efficacy of gemcitabine (GEM) in BC cells and to study the underlying molecular mechanisms. Patients and Methods The P4HB mRNA expression levels of 411 BC patients from the TCGA database and P4HB expression level of eighty BC paraffin-embedded samples detected by immunohistochemistry (IHC) staining were used for clinical feature and prognostic analyses. Bioinformatics analysis was utilized for the mechanistic investigation. Highly P4HB-expressed BC cell lines (T24 and 5637) treated with P4HB inhibitor (Bacitracin, BAC) were used to study the effects of BAC on the sensitivity of BC cells to GEM and the potential mechanism. P4HB inhibition experiments were performed in highly P4HB-expressed BC cells, and cell viability, colony formation, cell cycle, reactive oxygen species (ROS), apoptosis and pathway proteins were assessed in T24 and 5637 cells. Results Western blot analysis showed that P4HB expression was significantly higher in BC tissues than in paired normal tissues. IHC showed that patients with high P4HB expression had a poorer overall survival (OS) rate than those with low P4HB expression. Furthermore, increased P4HB expression was demonstrated to be an independent prognostic marker for BC. Functionally, P4HB inhibition by BAC decreased the cell proliferation ability in vitro. Moreover, BAC treatment sensitized BC cells to GEM. Molecular mechanism analysis indicated that inhibition of P4HB by BAC treatment enhanced the anticancer effects of GEM through increasing cellular ROS content and promoting cell apoptosis and PERK/eIF2α/ATF4/CHOP signaling. Conclusion High P4HB expression was significantly correlated with poor prognosis in BC patients. Inhibition of P4HB by BAC decreased the cell proliferation ability and sensitized BC cells to GEM by activating apoptosis and the PERK/eIF2α/ATF4/CHOP pathways.
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- 2020
30. Development and Validation of Prognostic Nomograms to Predict Overall and Cancer-Specific Survival for Patients with Adenocarcinoma of the Urinary Bladder: A Population-Based Study
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Zhi-Qiang Yang, Xu Hu, Maoying Liu, Yunjin Bai, and Ping Han
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Oncology ,medicine.medical_specialty ,Urinary Bladder ,Adenocarcinoma ,urologic and male genital diseases ,Cancer specific survival ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,otorhinolaryngologic diseases ,medicine ,Overall survival ,Humans ,Survival analysis ,Bladder cancer ,Urinary bladder ,business.industry ,Nomogram ,Prognosis ,medicine.disease ,United States ,Survival Rate ,Population based study ,Nomograms ,medicine.anatomical_structure ,030220 oncology & carcinogenesis ,030211 gastroenterology & hepatology ,Surgery ,business ,SEER Program - Abstract
Adenocarcinoma of the bladder (ACB) rarely occurs but is associated with poor outcome. We aim to establish reliable nomograms for estimating cancer-specific survival (CSS) and overall survival (OS) of ACB patients.ACB patients were retrieved from the Surveillance, Epidemiology, and End Results (SEER) database (2004-2015). A total of 1,149 patients were randomly divided into training cohort (OS nomogram incorporated age, race, histologic grade, American Joint Committee of Cancer (AJCC) stage, metastasis, surgery, chemotherapy, and tumor size. The C-indices were 0.754 (95% CI: 0.732-0.775) for training set and 0.743 (95% CI: 0.712-0.767) for validation set. Meanwhile, the calibration plots for 3- and 5-year OS displayed fine concordance between actual and predicted outcomes. In addition, higher areas under the curve (AUCs) were seen in training cohort (3-year: 0.799 vs. 0.630; 5-year: 0.797 vs. 0.648) and validation cohort (3-year: 0.802 vs. 0.662; 5-year: 0.752 vs. 0.660). Finally, DCA curves of the nomograms exhibited larger net benefits than AJCC stage. CSS nomogram showed similar results.Our study constructed and validated nomograms with improved discriminative abilities and clinical benefits to predict the survival outcomes of ACB patients. The models might assist clinicians in optimizing therapeutic management on individual levels.
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- 2020
31. Validation of the Prognostic Value of Preoperative Albumin-to-Alkaline Phosphatase Ratio in Patients with Surgically Treated Non-Metastatic Renal Cell Carcinoma
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Yao-Hui Wang, Zhi-Qiang Yang, Xu Hu, Yan-Xiang Shao, Xiang Li, Wei-Chao Dou, and Thongher Lia
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0301 basic medicine ,medicine.medical_specialty ,Multivariate analysis ,medicine.medical_treatment ,Urology ,OncoTargets and Therapy ,03 medical and health sciences ,0302 clinical medicine ,Renal cell carcinoma ,medicine ,nephrectomy ,Pharmacology (medical) ,albumin-to-alkaline phosphatase ratio ,Prospective cohort study ,prognostic impact ,Original Research ,business.industry ,Hazard ratio ,Nomogram ,medicine.disease ,Nephrectomy ,non-metastatic renal cell carcinoma ,030104 developmental biology ,Oncology ,030220 oncology & carcinogenesis ,T-stage ,Alkaline phosphatase ,business - Abstract
Xu Hu,1,* Zhi-Qiang Yang,1,* Wei-Chao Dou,1,* Yan-Xiang Shao,1 Yao-Hui Wang,1 Thongher Lia,1 Xiang Li2 1West China School of Medicine/West China Hospital, Sichuan University, Chengdu 610041, People’s Republic of China; 2Department of Urology, West China Hospital, West China Medical School, Sichuan University, Chengdu 610041, People’s Republic of China*These authors contributed equally to this workCorrespondence: Xiang Li Email hx_uro@sina.comPurpose: Several studies have revealed that albumin-to-alkaline phosphatase ratio (AAPR) was correlated to the survival of several cancers. To explore the impact of AAPR on the survival of non-metastatic renal cell carcinoma (RCC) patients following nephrectomy, the present study was conducted.Patients and Methods: A total of 648 patients were enrolled in the present study. The cut-off value of AAPR was determined based on the receiver-operating characteristic (ROC) analysis. Univariate and multivariate analyses were applied to identify prognostic factors. The discrimination and calibration of models for survival outcomes were evaluated based on the concordance index (C-index), ROC analysis and calibration curve.Results: The low AAPR (≤ 0.5) was associated with older age (P< 0.001), higher T stage (P=0.002), larger tumor size (P=0.014) and tumor necrosis (P=0.003). A high AAPR was significantly correlated to better OS (hazard ratio, HR=0.61; P=0.038) and CSS (HR=0.52; P=0.013) based on multivariate analysis. Integrating AAPR with UISS or SSIGN, the C-indexes of nomogram for OS (UISS: 0.790 vs 0.765; SSIGN: 0.861 vs 0.850) and CSS (UISS: 0.832 vs 0.805; SSIGN: 0.905 vs 0.896) increased. Moreover, the nomogram for OS and CSS was established based on the multivariate analysis. The C-indexes of nomogram for OS and CSS were 0.834 (95% CI 0.794– 0.874) and 0.867 (95% CI 0.830– 0.904), respectively.Conclusion: In conclusion, the high preoperative AAPR was a favorable prognostic factor for surgically treated non-metastatic RCC patients. AAPR also could improve the predictive value of well-established models. The nomogram that incorporatesAAPR had a good performance. More prospective studies with a large scale are essential to validate our findings.Keywords: albumin-to-alkaline phosphatase ratio, non-metastatic renal cell carcinoma, prognostic impact, nephrectomy
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- 2020
32. Preoperative systemic immune-inflammation index predicts prognosis of patients with non-metastatic renal cell carcinoma: a propensity score-matched analysis
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Wei-Chao Dou, Yan-Xiang Shao, Xiang Li, San-Chao Xiong, Zhi-Qiang Yang, and Xu Hu
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Cancer Research ,medicine.medical_specialty ,medicine.medical_treatment ,Non-metastatic ,Gastroenterology ,lcsh:RC254-282 ,03 medical and health sciences ,0302 clinical medicine ,Renal cell carcinoma ,Internal medicine ,Genetics ,medicine ,lcsh:QH573-671 ,030304 developmental biology ,0303 health sciences ,Receiver operating characteristic ,business.industry ,Proportional hazards model ,lcsh:Cytology ,Hazard ratio ,medicine.disease ,Prognosis ,lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,Confidence interval ,Nephrectomy ,Systemic immune-inflammation index ,Oncology ,030220 oncology & carcinogenesis ,Propensity score matching ,T-stage ,business ,Primary Research - Abstract
Background A novel systemic immune-inflammation index (SII), based on the neutrophils, lymphocytes and platelet counts, is associated with the prognosis of several cancers. The present study evaluates the prognostic significance of SII in non-metastatic renal cell carcinoma (RCC). Method The present study retrospectively reviewed the medical record of patients with non-metastatic RCC who underwent nephrectomy between 2010 and 2013. Receiver operating characteristic (ROC) curve analysis was performed to identify the optimal cut-off value. In addition, the propensity score matching (PSM) was performed with a matching ratio of 1:1. Univariate and multivariate Cox proportional hazards models were used to identify the prognostic factors. The results were reported by hazard ratio (HR) with 95% confidence interval (95% CI). Results A total of 646 patients were included in the final analysis. High SII group (> 529) was significantly associated with older age (P = 0.014), larger tumor (P Conclusion In conclusion, preoperative SII is associated with adverse factors for RCC. Furthermore, higher preoperative SII is an independent predictor of poor OS and CSS in surgically treated patients with non-metastatic RCC. More prospective and large scale studies are warranted to validate our findings.
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- 2020
33. A dynamic elastic model for squirt-flow effect and its application on fluid-viscosity-associated velocity dispersion in reservoir sandstones
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Tao He, Zhi-Qiang Yang, and Changchun Zou
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Fluid viscosity ,010504 meteorology & atmospheric sciences ,Velocity dispersion ,Mechanics ,010502 geochemistry & geophysics ,01 natural sciences ,Geophysics ,Geochemistry and Petrology ,Dispersion (optics) ,S-wave ,P-wave ,Flow effect ,Ultrasonic sensor ,Porosity ,Geology ,0105 earth and related environmental sciences - Abstract
Velocity dispersion is a common phenomenon for fluid-charged porous rocks and carries important information on the pore structure and fluid in reservoir rocks. Previous ultrasonic experiments had measured more significant non-Biot velocity dispersion on saturated reservoir sandstones with increasing pore-fluid viscosity. Although wave-induced local squirt-flow effect could in theory cause most of the non-Biot velocity dispersion, its quantitative prediction remains a challenge. Several popular models were tested to predict the measured velocities under undrained conditions, but they either underestimated the squirt-flow effect or failed to simultaneously satisfy P- and S-wave velocity dispersions (especially for higher viscosity fluids). Based on the classic double-porosity theory that pore space is comprised of mainly stiff/Biot’s porosity and minor compliant porosity, an effective “wet frame” was hypothesized to account for the squirt-flow effect, whose compliant pores are filled with a hypothesized fluid with dynamic modulus. A new dynamic elastic model was then introduced by extending Biot theory to include the squirt-flow effect, after replacing the dry-frame bulk/shear moduli with their wet-frame counterparts. In addition to yielding better velocity predictions for P- and S-wave measurements of different fluid viscosities, the new model is also more applicable because its two key tuning parameters (i.e., the effective aspect ratio and porosity of compliant pores) at in situ reservoir pressure could be constrained with laboratory velocity measurements associated with pore-fluid viscosities.
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- 2020
34. Effect of Mn content on microstructure, tensile and impact properties of SA508Gr.4N steel for reactor pressure vessel
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Shi-bin Qiao, Zhi-qiang Yang, Zhen Wang, Zheng-dong Liu, and Xi-kou He
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Toughness ,Materials science ,Mechanics of Materials ,Transmission electron microscopy ,Scanning electron microscope ,Ultimate tensile strength ,Materials Chemistry ,Metals and Alloys ,Grain boundary ,Composite material ,Microstructure ,Diffractometer ,Hardenability - Abstract
The effect of manganese (Mn) on the microstructure, tensile and impact properties of SA508Gr.4N steel has been experimentally investigated. The influence of Mn content on the substructure of SA508Gr.4N steel was investigated using the scanning electron microscope, electron back-scattered diffractometer and transmission electron microscope. It was found that the increased Mn content had a beneficial effect on both strength and toughness. Examination of microstructure revealed smaller size of block and larger number of high-angle grain boundaries with higher Mn content. The change of the ultimate tensile strength and toughness with increasing Mn content was attributed to the increased hardenability, the number of high-angle grain boundaries and the crack propagation path by the block refining.
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- 2020
35. Characterization of Phenotypic and Genotypic Traits of Klebsiella pneumoniae from Lung Cancer Patients with Respiratory Infection
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Lingchi Ding, Zhi-Qiang Yang, Ying Liu, Xiaodong Zhang, Kui Zhu, Weidong Yao, Lichao Ma, Xiaoyan Wu, and Junguo Lu
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0301 basic medicine ,Pharmacology ,biology ,business.industry ,Klebsiella pneumoniae ,030106 microbiology ,Cancer ,Virulence ,Respiratory infection ,Drug resistance ,Tigecycline ,medicine.disease ,biology.organism_classification ,respiratory tract diseases ,Microbiology ,Multiple drug resistance ,03 medical and health sciences ,0302 clinical medicine ,Infectious Diseases ,Antibiotic resistance ,Medicine ,Pharmacology (medical) ,030212 general & internal medicine ,business ,medicine.drug - Abstract
Background Klebsiella pneumoniae has been a leading healthcare-acquired infection (HAI) agent worldwide for decades. However, the epidemiological characteristics of K. pneumoniae in lung cancer patients with respiratory infection are unclear. Here, we characterized the frequency of K. pneumoniae in lung cancer patients with respiratory infection in a cancer hospital in China and determined the antibiotic resistance profile, virulence phenotype and clonal relationships among these K. pneumoniae strains. Methods The clinical data of lung cancer patients with respiratory infection from September 2017 to October 2018 were retrospectively evaluated. Microbiological methods, antimicrobial susceptibility tests, pulsed-field gel electrophoresis (PFGE), polymerase chain reaction (PCR) assays, Sanger sequencing and Galleria mellonella larvae infection model were used in this study. Results During the study period, a total of 47 lung cancer patients with respiratory infection caused by bacteria were identified, among 27 patients were identified as positive for K. pneumoniae and the positive rate was 57.45%. Among 37 nonduplicate K. pneumoniae strains from these 27 patients, 19 isolates (51.4%) were classified as multidrug resistant (MDR) with high-level resistance to, at least one agent in three or more antibiotic categories, including polymyxin B and tigecycline. Sixteen of the 37 strains (43.2%) were hypermucoviscous isolates. Extended spectrum β-lactamases-producing K. pneumoniae strains consisted of two dominant PFGE types. Furthermore, the assessment of virulence potential using a G. mellonella larvae infection model showed that K. pneumoniae isolated from these patients exhibited a high virulence level. Conclusion Our data showed that K. pneumoniae is the most critical cause of lung infection in patients with lung cancer in this hospital. The various drug resistance and virulence backgrounds of K. pneumoniae may make this clinical center a breeding ground for superbugs. It is paramount to enhance surveillance of K. pneumoniae strains and take control measures.
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- 2020
36. Molecular Characteristics of m6A Regulators and Tumor Microenvironment Infiltration in Soft Tissue Sarcoma: A Gene-Based Study
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Kang-Wen Xiao, Zhi-Qiang Yang, Xin Yan, Zhi-Bo Liu, Min Yang, Liang-Yu Guo, and Lin Cai
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Histology ,Biomedical Engineering ,Bioengineering ,Biotechnology - Abstract
Background: N6-methyladenosine (m6A) methylation played a key role in tumor growth. However, the relationship between m6A and soft tissue sarcoma (STS) was still unclear.Methods: The characterization and patterns of m6A modification in STS (TCGA-SARC and GSE17674) were analyzed comprehensively through bioinformatics and real-time polymerase chain reaction (RT-PCR). The effects of different m6A modification patterns on prognosis and immune infiltration of STS were further explored. Differentially expressed gene (DEG) analysis was performed. Moreover, an m6Ascore was constructed by principal component analysis (PCA). In addition, two immunotherapy datasets (IMvigor210 and GSE78220) and a sarcoma dataset (GSE17618) were used to evaluate the m6Ascore.Results: Huge differences were found in somatic mutation, CNV, and expression of 25 m6A regulators in STS. Two modification patterns (A and B) in STS were further identified and the m6A cluster A showed a better clinical outcome with a lower immune/stromal score compared with the m6A cluster B (p < 0.050).In addition to , most STS samples from m6A cluster A showed a high m6Ascore, which was related to mismatch repair and a better prognosis of STS (p < 0.001). In contrast, the m6A cluster B, characterized by a low m6Ascore, was related to the MYC signaling pathway, which led to a poor prognosis of STS. A high m6Ascore also contributed to a better outcome of PD-1/PD-L1 blockade immunotherapy.Conclusion: The modification patterns of 25 m6A regulators in the STS microenvironment were explored comprehensively. The novel m6Ascore effectively predicted the characteristics of the tumor microenvironment (TME) and outcome in STS and provided novel insights for future immunotherapy.
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- 2021
37. Connexin 43 recruits E-cadherin expression and inhibits the malignant behaviour of lung cancer cells.
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En-Hua Wang, Zhi-Qiang Yang, Yang Liu, Yue Zhao, Yong-Xing Zhang, Qing-Chang Li, and Hong-Tao Xu
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Cytology ,QH573-671 - Abstract
The interaction of connexin 43 and E-cadherin may play an important role in carcinogenesis and malignant behaviour of tumours. In this study, we examined the relationship between connexin 43 and E-cadherin in human non-small cell lung cancers (NSCLC). Expression levels of connexin 43 and E-cadherin were examined in 107 NSCLC specimens by immunohistochemistry. The connexin 43 gene was transfected into lung cancer LH7 cells. The protein localizations and levels of connexin 43 and E-cadherin were detected using immunofluorescence staining and western blot. Cell cycle and proliferation of lung cancer cells were examined using flow cytometry and MTT. We found that reduced expression of both connexin 43 and E-cadherin significantly correlated to poor differentiation, advanced TNM stage, and lymph note metastasis of NSCLCs. Connexin 43 and E-cadherin expression significantly correlated with each other. Over-expression of connexin 43 significantly induced E-cadherin expression. Moreover, connexin 43-transfected LH7 cells showed significantly decreased cell proliferation. The percentage of cells in G1 phase increased, while the number of cells in S and G2 phases significantly decreased. We concluded that concurrent reduction of connexin 43 and E-cadherin may contribute to the development of lung cancer. Connexin 43 may induce E-cadherin expression and inhibit cell proliferation and progression of lung cancer.
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- 2008
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38. Association of serum complement C1q with cardiovascular outcomes among patients with acute coronary syndrome undergoing percutaneous coronary intervention.
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Qiu-Xuan LI, Xiao-Teng MA, Qiao-Yu SHAO, Zhi-Qiang YANG, Jing LIANG, Li-Xia YANG, Dong-Mei SHI, Yu-Jie ZHOU, and Zhi-Jian WANG
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C-reactive protein ,ELECTIVE surgery ,PATIENT aftercare ,COMPLEMENT (Immunology) ,PERCUTANEOUS coronary intervention ,SCIENTIFIC observation ,CONFIDENCE intervals ,MAJOR adverse cardiovascular events ,HEALTH outcome assessment ,ACUTE coronary syndrome ,REGRESSION analysis ,RISK assessment ,RESEARCH funding ,SURVIVAL analysis (Biometry) ,DESCRIPTIVE statistics ,LONGITUDINAL method ,PROPORTIONAL hazards models - Abstract
OBJECTIVE: To determine the association of serum complement C1q levels with cardiovascular outcomes among patients with acute coronary syndrome (ACS) undergoing percutaneous coronary intervention (PCI), and evaluate the value of C1q modified by high-sensitivity C-reactive protein (hs-CRP) levels as an independent predictor. METHODS: As a single-center prospective observational study, we analyzed 1701 patients who had received primary or elective PCI for ACS at Beijing Anzhen Hospital, Capital Medical University, Beijing, China between June 1, 2016 and November 30, 2017. The associations of C1q modified by hs-CRP with major adverse cardiovascular events (MACE) were determined in survival analysis. RESULTS: Patients with the lowest C1q tertile had the highest cumulative risk of MACE (log-rank P = 0.007). In fully adjusted Cox regression models, stratifying the total population according to hs-CRP dichotomy, C1q was significantly associated with MACE in patients with hs-CRP levels less than 2 mg/L but not in those with 2 mg/L or more (Pinteraction = 0.02). In patients with hs-CRP levels less than 2 mg/L, with the lowest C1q tertile as reference, the risk of MACE was reduced by 40.0% in the middle C1q tertile [hazard ratio (HR) = 0.600, 95% CI: 0.423-0.852, P = 0.004] and by 43.9% in the highest C1q tertile (HR = 0.561, 95% CI: 0.375-0.840, P = 0.005). CONCLUSIONS: Serum complement C1q is significantly associated with cardiovascular outcomes in patients with ACS undergoing PCI, only when hs-CRP levels are less than 2 mg/L. This finding implicates the usefulness of C1q for the risk stratification in ACS patients with reduced systemic inflammation. [ABSTRACT FROM AUTHOR]
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- 2022
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39. Metal-free catalytic hydrocarboxylation of hexafluorobut-2-yne
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Ji-Jun Zeng, Bo Zhao, Xiao-Bo Tang, Sheng Han, Zhi-Qiang Yang, Ze-Peng Liu, Wei Zhang, and Jian Lu
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General Chemical Engineering ,General Chemistry - Abstract
An efficient method for stereoselective synthesis of trifluorinated enol esters catalyzed by base was introduced. The DFT calculations and experimental results both supported the nucleophilic addition process. The protocol featured mild reaction conditions and showed a wide functional group tolerance. The one-pot simultaneous etherification and esterification of the salicylic acids further demonstrated the prospective synthetic application.
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- 2021
40. Liquiritigenin attenuates isoprenaline-induced myocardial fibrosis in mice through the TGF-β1/Smad2 and AKT/ERK signaling pathways
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Hui Fang, Shanxin Liu, Li Li, Zhi-Qiang Yang, and Yong-Hong Yu
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MAPK/ERK pathway ,Male ,Cancer Research ,Heart Diseases ,Cardiac fibrosis ,Apoptosis ,Smad2 Protein ,Pharmacology ,Biochemistry ,Cell Line ,Transforming Growth Factor beta1 ,ultrasound imaging ,Fibrosis ,Genetics ,Medicine ,Animals ,Myocytes, Cardiac ,Ventricular remodeling ,Extracellular Signal-Regulated MAP Kinases ,Molecular Biology ,Protein kinase B ,extracellular signal-regulated kinase ,transforming growth factor β1 ,business.industry ,Angiotensin II ,Isoproterenol ,Articles ,medicine.disease ,Rats ,Mice, Inbred C57BL ,Oncology ,liquiritigenin ,Flavanones ,Heart Function Tests ,Molecular Medicine ,protein kinase B ,Myocardial fibrosis ,myocardial fibrosis ,Signal transduction ,business ,Proto-Oncogene Proteins c-akt ,Smad2 ,Signal Transduction - Abstract
Myocardial fibrosis is a pathological process characterized by excessive accumulation of extracellular matrix in myocardial interstitial spaces. Myocardial fibrosis is a fundamental process in ventricular remodeling and a primary contributor to the progression of heart failure. Liquiritigenin (LQ) is a flavanone compound with anti-oxidative, anti-carcinogenic, anti-inflammatory and estrogenic properties. The present study aimed to investigate the regulatory potential of LQ treatment in a mouse model of isoprenaline (ISO)-induced cardiac fibrosis and in cultured H9C2 cardiomyocytes stimulated with angiotensin II (Ang II). The treatment of ISO-induced mice with LQ significantly decreased the levels of cardiac injury-related proteins in the serum and ECM accumulation in mouse heart tissues. LQ treatment also effectively alleviated cardiac dysfunction in ISO-treated mice. Further analyses revealed that LQ inhibited ISO-induced collagen formation and activation of the transforming growth factor-β1 (TGF-β1)/Smad2 and protein kinase B (AKT)/extracellular signal-regulated kinase (ERK) signaling pathways. As a major pathological event in myocardial fibrosis, the apoptosis of cardiomyocytes has been considered a key mechanism contributing to impaired left ventricle performance. The pretreatment of rat cardiomyocytes with LQ significantly reduced the apoptosis of H9C2 cells, and inhibited Ang II-induced activation of the TGF-β1/Smad2 and AKT/ERK pathways. In conclusion, the present study revealed that LQ ameliorated ISO-induced myocardial fibrosis in mice and inhibited the apoptosis of cardiomyocytes in vitro by inhibiting the TGF-β1/Smad2 and AKT/ERK signaling pathways. These results suggested the anti-fibrotic and cardioprotective potential of LQ in fibrosis, thus supporting the use of LQ for the management of cardiomyocyte injury and myocardial fibrosis in patients with cardiac diseases.
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- 2021
41. Effects of Wuzhi Capsules on Blood Concentration of Tacrolimus in Renal Transplant Recipients
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Lanlan Wang, Zhengli Wan, Zhi-Qiang Yang, Yi Li, Lin Yan, Limei Luo, Yangjuan Bai, Cuili Yang, Jing Ren, and Yunying Shi
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Adult ,Male ,medicine.medical_specialty ,Capsules ,Polymorphism, Single Nucleotide ,030226 pharmacology & pharmacy ,Gastroenterology ,Tacrolimus ,Cohort Studies ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,Living Donors ,medicine ,Cytochrome P-450 CYP3A ,Humans ,Trough Concentration ,030212 general & internal medicine ,Adverse effect ,CYP3A5 ,Kidney transplantation ,Retrospective Studies ,Original Paper ,Transplantation ,business.industry ,Retrospective cohort study ,General Medicine ,medicine.disease ,Kidney Transplantation ,surgical procedures, operative ,Renal transplant ,Female ,business ,Immunosuppressive Agents ,Drugs, Chinese Herbal ,Cohort study - Abstract
BACKGROUND Tacrolimus is a widely used immunosuppressant in renal transplant recipients. It was demonstrated in rats and healthy volunteers that Wuzhi capsules could inhibit metabolism and maintain blood concentration of tacrolimus. However, there are no clinical studies of Wuzhi capsules in renal transplant recipients. This research aimed to assess the effect of Wuzhi capsules on the blood concentration of tacrolimus in renal transplant recipients. MATERIAL AND METHODS A total of 158 Chinese renal transplant recipients receiving tacrolimus with or without Wuzhi capsules were included in this retrospective study. The cohort study included 126 recipients, with 86 recipients receiving Wuzhi capsules (WZCs) and the other 40 recipients not receiving WZCs. Another 32 recipients were involved in a self-control study. RESULTS Dose- and body weight-adjusted trough concentrations (C0/D/W) of tacrolimus in the WZC group were found to be significantly higher than that in the non-WZC group (P
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- 2019
42. The Effect of the Scanning Number on Accuracy of Digital Impression
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Xiaomian Wu, Ping Ji, Yu-Xuan Wen, Xiaolei Hu, Feng Deng, and Zhi-Qiang Yang
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stomatognathic diseases ,03 medical and health sciences ,0302 clinical medicine ,stomatognathic system ,business.industry ,Computer science ,Computer vision ,030212 general & internal medicine ,030206 dentistry ,Artificial intelligence ,business ,Impression - Abstract
Background: Intraoral digital scanning could offer a win-win clinical pathway for both doctor and patient, but many factors can affect its accuracy. This study was designed to investigate the effect of the scanning number on the precision of digital impression in different gypsum models. Materials and methods: 30 standard gypsum models were divided into group A, B, C, D and E. Each group was scanned with 400 and 1000 pictures by Trios. Then Using the three-dimensional preview function to compare the fitted images and to measure the distance between markers: the buccal-lingual thickness of maxillary central incisors, the length from the medial to the distal of buccal cusps of maxillary second molars, the crown width of mandibular central incisors, the buccal-lingual thickness of maxillary central incisors requiring a veneer, and the buccal-lingual width of the inlay of the mandibular first molar. Results: The scanning time of 1000 scanning number groups were significantly prolonged and the efficiency of 3D reconstruction was significantly reduced. But obvious image stitching distortion could be observed in these groups compared with 400 scanning number groups. Whats more, the compare of measured values in each 400 and 1000 scanning number group was all statistically significant. Conclusion: The data splicing caused by the excessive scanning number may influence the digital impression accuracy. Trios scans 400 pictures was with higher scanning accuracy than scanning 1000 pictures.
- Published
- 2019
43. Arteriovenous haemangioma of the vas deferens: a case report and literature review
- Author
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Ping Han, Ao Li, Yin Tang, Dechao Feng, Zhi-Qiang Yang, Facai Zhang, Huan Hu, Yubo Yang, Dengxiong Li, Yunjin Bai, Zeyu Chen, and Xiaoming Wang
- Subjects
medicine.medical_specialty ,business.industry ,Urology ,medicine.medical_treatment ,030232 urology & nephrology ,Vas deferens ,Vasectomy ,Case Report ,medicine.disease ,Epididymis ,Spermatic cord ,Surgery ,Post-vasectomy pain syndrome ,body regions ,03 medical and health sciences ,0302 clinical medicine ,medicine.anatomical_structure ,Reproductive Medicine ,030220 oncology & carcinogenesis ,Scrotum ,Cauterization ,medicine ,business ,Scrotal Pain - Abstract
Arteriovenous haemangioma of the vas deferens is an extremely rare entity in clinical practice. To date, there have been no clinical or pathological cases reported in Medline, Embase or other published English literature. Herein, a 50-year-old male who presented with right scrotal pain for 4 years after vasectomy was admitted to our hospital. One painful nodule was palpable in the right scrotum on physical examination. Color Doppler ultrasound merely showed dilation of the epididymis and no additional information concerning the painful nodule in the right scrotum. Moreover, the laboratory test results were all within normal limits. Ibuprofen was administered to the patient for 2 months with a poor effect, and then spermatic cord block significantly relieved his symptoms. This patient underwent resection of the right painful nodule of the vas deferens under medical advice. Postoperative pathological examinations showed arteriovenous haemangioma of the vas deferens. There were no obvious complications after arteriovenous haemangioma excision, and the right scrotal pain was significantly relieved 1 month later. This article reminds urologists and oncologists that haemangioma can involve the vas deferens and, in addition to spermatic granuloma, might be a cause of post-vasectomy pain syndrome. Cauterization of the vas deferens might have a potential relationship with haemangioma.
- Published
- 2021
44. The Prognostic Value of Body Mass Index in Patients With Urothelial Carcinoma After Surgery: A Systematic Review and Meta-Analysis
- Author
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Ping Han, Zhi-Qiang Yang, Xu Hu, Yunjin Bai, and Xiaoming Wang
- Subjects
Oncology ,medicine.medical_specialty ,Health, Toxicology and Mutagenesis ,030232 urology & nephrology ,body mass index ,Toxicology ,radical nephroureterectomy ,03 medical and health sciences ,0302 clinical medicine ,Internal medicine ,Medicine ,In patient ,radical cystectomy ,urothelial carcinoma ,Urothelial carcinoma ,Chemical Health and Safety ,business.industry ,lcsh:RM1-950 ,Public Health, Environmental and Occupational Health ,meta-analysis ,lcsh:Therapeutics. Pharmacology ,Clinical evidence ,030220 oncology & carcinogenesis ,Meta-analysis ,Original Article ,business ,Body mass index ,Value (mathematics) - Abstract
Background: The clinical evidence of body mass index (BMI) for survival has increased in urothelial carcinoma (UC). This study aimed to investigate the prognostic value of BMI on the oncologic outcomes of patients with UC after surgery. Methods: The systematic review and meta-analysis was performed using Pubmed, Embase and Cochrane Library. We collected hazard ratio (HR) and 95% confidence interval (CI) on cancer specific survival (CSS), overall survival (OS) and recurrence-free survival (RFS) from the studies including upper tract urothelial carcinoma (UTUC) and urothelial carcinoma of bladder (UCB). Results: A total of 13 studies comprising over 12,200 patients were enrolled in the quantitative synthesis. Compared with normal weight, overweight was associated with better CSS (HR = 0.87, 95% CI: 0.79-0.95) and RFS (HR = 0.86, 95% CI: 0.78-0.96). Meanwhile, we found that obese patients had worse CSS (HR = 1.14, 95%CI: 1.03-1.26), OS (HR = 1.31, 95% CI: 1.19-1.44) and RFS (HR = 1.24, 95% CI: 1.12-1.37). We observed that underweight was associated with inferior CSS (HR = 1.87, 95% CI: 1.54-2.26) in UTUC patients. Conclusions: Overweight was a protective factor for patients with UC after surgery, while obesity and underweight predicted unfavorable survival. Individual BMI may be considered for prognostication after surgeries and patient stratification for clinical trials.
- Published
- 2020
45. Detrusor underactivity influences the efficacy of TURP in patients with BPO
- Author
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Yan Zhu, Zhi-Qiang Yang, Ping Zhong, Yuan-Jie Niu, Bao-Min Qiao, and Yao-Rui Zhao
- Subjects
Nephrology ,Adult ,Male ,medicine.medical_specialty ,Urology ,030232 urology & nephrology ,Prostatic Hyperplasia ,030204 cardiovascular system & hematology ,urologic and male genital diseases ,03 medical and health sciences ,Bladder outlet obstruction ,0302 clinical medicine ,Internal medicine ,Urinary Bladder, Underactive ,medicine ,Humans ,In patient ,Aged ,Retrospective Studies ,Aged, 80 and over ,Receiver operating characteristic ,business.industry ,Transurethral Resection of Prostate ,Retrospective cohort study ,Middle Aged ,Urinary Bladder Neck Obstruction ,Treatment Outcome ,Bladder contractility ,business ,Benign prostate - Abstract
To investigate the effect of detrusor underactivity on the efficacy of TURP in patients with benign prostate obstruction. A retrospective study of 350 patients with benign prostate obstruction who underwent TURP was carried out. Different degrees of bladder outlet obstruction were grouped by the bladder outlet obstruction index. ROC curves were used to calculate the optimal cut-off point for the bladder contractility index used to divide the DU patients into mild DU and severe DU patients. The effect of DU on the efficacy of TURP in benign prostate obstruction patients was studied by comparing the subjective and objective parameters preoperatively and 3 months postoperatively between severe DU, mild DU and non-DU benign prostate obstruction patients in two obstruction groups (20 ≤ BOOI
- Published
- 2020
46. High SMARCA5 Expression is Associated With Poor Prognosis in Patients With Non-Small Cell Lung Cancer
- Author
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Zhi-Qiang Yang, yuanyuan wen, Lue Li, Hai-Feng Li, and Hui He
- Subjects
Oncology ,Poor prognosis ,medicine.medical_specialty ,business.industry ,Internal medicine ,medicine ,In patient ,Non small cell ,Lung cancer ,medicine.disease ,business ,respiratory tract diseases - Abstract
Background: SMARCA5 has been proved to play the role of oncogene in various types of tumors. The purpose of our study was to study the relationship between the expression of SMARCA5 and the prognosis of patients with Non-small cell lung cancer(NSCLC), and to investigate the effect of silencing the expression of SMARCA5 on the biological behavior of NSCLC. Methods:Immunohistochemistry method was adopted to detect to the expressions of SMARCA5 proteins in NSCLC and normal lung tissues. The correlation between the expression of SMARCA5 and clinicopathological factors and survival prognosis of patients with NSCLC were analyzed by statistical methods. Western blot and RT-PCR were used to detect the expression of SMARCA5 in normal human bronchial epithelial cell line (HBE) and human lung cancer cell lines (A549, Lu165, SK-MES-1 and NCI-H520). SMARCA5 siRNA was employed to silence the the expression of SMARCA5. MTT and Transwell methods were used to detect the proliferation and invasion of lung cancer cells.Results: SMARCA5 protein were highly expressed in 78 (59.5%) NSCLC tissues. SMARCA5 mRNA (PPPPP=0.032). Meanwhile, High expression of SMARCA5 was associated with poor prognosis of NSCLC patients. Knockdown of SMARCA5 expression inhibited cell growth and invasion in NSCLC. Conclusion: High expression of SMARCA5 is associated with poor prognosis in patients with NSCLC, and SMARCA5 can increase activity of proliferation and invasion in NSCLC cells. SMARCA5 may play a decisive role in tumorigenesis of NSCLC.
- Published
- 2020
47. C-reactive Protein Is a Predictor of Prognosis of Prostate Cancer: A Systematic Review and Meta-Analysis
- Author
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Du-Wu, Liao, Xu, Hu, Yan, Wang, Zhi-Qiang, Yang, and Xiang, Li
- Subjects
Male ,C-Reactive Protein ,Biomarkers, Tumor ,Disease Progression ,Humans ,Prostatic Neoplasms ,Prognosis - Abstract
Increasing evidence suggested that inflammation is associated with the pathogenesis and progression of several solid tumors. This study was conducted to explore the association between C-reactive protein (CRP) and survival of prostate cancer (PCa). An electronic search was completed on the basis of PubMed, Embase and Cochrane Central Register of Controlled Trials. The hazard ratio (HR) and 95% confidence interval (CI) were extracted. Studies evaluating the relation between pretreatment levels of CRP and survival of PCa were included. Sixteen articles incorporating 17,833 patients were eligible for the present meta-analysis. Elevated pretreatment CRP level was significantly associated with poorer overall survival (OS) (HR=1.58, 95% CI 1.31-1.91
- Published
- 2020
48. Prognostic value of preoperative prognostic nutritional index in patients with renal cell carcinoma after nephrectomy
- Author
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Yan-Xiang Shao, Xiang Li, Yao-Hui Wang, Wei-Xiao Yang, Zhi-Qiang Yang, Xu Hu, and Thongher Lia
- Subjects
0301 basic medicine ,medicine.medical_specialty ,medicine.medical_treatment ,Clinical Biochemistry ,Urology ,Nutritional Status ,Biochemistry ,Nephrectomy ,03 medical and health sciences ,0302 clinical medicine ,Serum albumin level ,Renal cell carcinoma ,Medicine ,Humans ,In patient ,Carcinoma, Renal Cell ,Survival analysis ,Retrospective Studies ,Univariate analysis ,business.industry ,Proportional hazards model ,Biochemistry (medical) ,General Medicine ,medicine.disease ,Prognosis ,Kidney Neoplasms ,030104 developmental biology ,Nutrition Assessment ,030220 oncology & carcinogenesis ,business - Abstract
The present study was performed to explore the prognostic value of prognostic nutritional index (PNI) in renal cell carcinoma (RCC) patients following nephrectomy.A total of 660 patients were included. PNI was calculated based on the following formula: serum albumin level (g/L) + 0.005 × total lymphocyte count (per mmThe patients in low PNI group were more likely to be older (P 0.001), have a larger tumor (P 0.001), higher pathological T stage (P 0.001), positive lymph node (P = 0.038), distant metastasis (P = 0.005), higher tumor grade (P 0.001) and tumor necrosis (P 0.001). Multivariable analysis revealed low preoperative PNI was an independent predictor of overall survival (OS) (P = 0.034) and progression-free survival (PFS) (P = 0.004) for all patients. Besides, low preoperative PNI was also significantly associated with poor OS (P = 0.008), cancer-specific survival (CSS) (P = 0.032) and PFS (P = 0.003) for non-metastatic RCC patients.The patients with lower preoperative PNI were associated with adverse factors. Furthermore, the low preoperative PNI was also associated with inferior oncological outcomes in RCC patients who underwent nephrectomy.
- Published
- 2020
49. An Integrated Microarray Analysis Reveals Significant Diagnostic and Prognostic Biomarkers in Pancreatic Cancer
- Author
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Yu-Jian Liu, Zhi-Qiang Yang, and Xiao-Lei Zhou
- Subjects
Microarray ,endocrine system diseases ,genetic structures ,education ,Gene regulatory network ,Datasets as Topic ,Down-Regulation ,Computational biology ,030204 cardiovascular system & hematology ,Biology ,Mapk signaling pathway ,03 medical and health sciences ,0302 clinical medicine ,Pancreatic cancer ,health services administration ,Databases, Genetic ,Protein Interaction Mapping ,Diagnosis ,medicine ,Biomarkers, Tumor ,Humans ,Gene Regulatory Networks ,Protein Interaction Maps ,KEGG ,Pancreas ,Survival analysis ,Oligonucleotide Array Sequence Analysis ,Regulation of gene expression ,Microarray analysis techniques ,Gene Expression Profiling ,Computational Biology ,General Medicine ,medicine.disease ,Prognosis ,Microarray Analysis ,Survival Analysis ,humanities ,Up-Regulation ,Gene Expression Regulation, Neoplastic ,Pancreatic Neoplasms ,Tissue Array Analysis ,030220 oncology & carcinogenesis ,Database Analysis ,Biological Markers - Abstract
BACKGROUND Pancreatic cancer (PAC) is a lethal cancer and it is essential to develop accurate diagnostic and prognostic biomarkers for PAC. MATERIAL AND METHODS An integrated microarray analysis of PAC was conducted to identify differentially expressed genes (DEGs) between PAC and non-tumor controls. Expression of DEGs were further confirmed by The Cancer Genome Atlas and the Genotype-Tissue Expression. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes enrichment analysis, and protein-protein integration network construction were performed to further research the biological functions of DEGs. Receiver-operating characteristic analysis and survival analysis were used to evaluate the diagnostic and prognostic value of DEGs for PAC. RESULTS Seventeen microarray datasets were downloaded from Gene Expression Omnibus to conduct the integrated microarray analysis. A total of 1136 DEGs (596 upregulated and 540 downregulated DEGs) in PAC tissues compared with non-tumor controls were identified. Pancreatic secretion (Kegg: 04972), insulin signaling pathway (Kegg: 04910), and several cancer-related pathways including pathways in cancer (Kegg: 05200), MAPK signaling pathway (Kegg: 04010), and pancreatic cancer (Kegg: 05212) were enriched for DEGs in PAC. Seven DEGs (AHNAK2, CDH3, IFI27, ITGA2, LAMB3, SLC6A14, and TMPRSS4) were found to have both great diagnostic and prognostic value for PAC. High expression of these 7 DEGs were significantly associated with poor prognosis of patients with PAC. CONCLUSIONS These 7 DEGs might be potential diagnostic and prognostic biomarkers for PAC and help uncovering the mechanism of PAC.
- Published
- 2020
50. Nanosized Alumina Particle and Proteasome Inhibitor Bortezomib Prevented inflammation and Osteolysis Induced by Titanium Particle via Autophagy and NF-κB Signaling
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Feng Deng, Jinlin Song, Zhiwei Zhang, Xiaolei Hu, Tiwei Fu, Zhi-Qiang Yang, Ling Xu, Xiaomian Wu, Lin Jiang, Ping Ji, Jiao Huang, Pengfei Zhou, and Xuewei Fu
- Subjects
Male ,0301 basic medicine ,Osteolysis ,Immunology ,lcsh:Medicine ,Osteoclasts ,Inflammation ,02 engineering and technology ,Article ,Cell Line ,Proinflammatory cytokine ,Bortezomib ,Biomaterials ,Mice ,03 medical and health sciences ,Osteogenesis ,Aluminum Oxide ,Autophagy ,medicine ,Animals ,Humans ,lcsh:Science ,Titanium ,Osteoblasts ,Multidisciplinary ,Chemistry ,lcsh:R ,NF-kappa B ,021001 nanoscience & nanotechnology ,medicine.disease ,Cell biology ,Mice, Inbred C57BL ,030104 developmental biology ,Apoptosis ,Proteasome inhibitor ,Cytokines ,Nanoparticles ,lcsh:Q ,Signal transduction ,medicine.symptom ,0210 nano-technology ,Proteasome Inhibitors ,Signal Transduction ,medicine.drug - Abstract
Autophagy and NF-κB signaling are involving in the process of Particle Disease, which was caused by the particles released from friction interface of artificial joint, implant materials of particle reinforced composite, scaffolds for tissue engineering, or material for drug delivery. However, the biological interaction of different material particles and the mechanism of proteasome inhibitor, Bortezomib (BTZ), against Titanium (Ti) particle-induced Particle Disease remain unclear. In this study, we evaluated effect of nanosized Alumina (Al) particles and BTZ on reducing and treating the Ti particle-induced inflammatory reaction in MG-63 cells and mouse calvarial osteolysis model. We found that Al particles and BTZ could block apoptosis and NF- κB activation in osteoblasts in vitro and in a mouse model of calvarial resorption induced by Ti particles. We found that Al particles and BTZ attenuated the expression of inflammatory cytokines (IL-1β, IL-6, TNF-α). And Al prevented the IL-1β expression induced by Ti via attenuating the NF- κB activation β-TRCP and reducing the expression of Casepase-3. Expressions of autophagy marker LC3 was activated in Ti group, and reduced by Al and/not BTZ. Furthermore, the expressions of OPG were also higher in these groups than the Ti treated group. Collectively, nanosized Al could prevent autophagy and reduce the apoptosis, inflammatory and osteolysis induced by Ti particles. Our data offered a basic data for implant design when it was inevitable to use Ti as biomaterials, considering the outstanding mechanical propertie of Ti. What’s more, proteasome inhibitor BTZ could be a potential therapy for wear particle-induced inflammation and osteogenic activity via regulating the activity of NF- κB signaling pathway.
- Published
- 2020
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