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Zhang W, Zhang K, Yang M, Si S. Physical Exercise Transforms the Topography and Increases the Invulnerability of the Symptom Network of Depression-Anxiety in the Elderly. Clin Psychol Psychother 2024; 31:e2971. [PMID: 38600811 DOI: 10.1002/cpp.2971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 03/05/2024] [Accepted: 03/06/2024] [Indexed: 04/12/2024]
Abstract
BACKGROUND AND OBJECTIVES Depression and anxiety often co-occur and have worse impacts on the elderly when experienced simultaneously. Although physical exercise may alleviate depression and anxiety, how it affects the specific symptoms is not fully understood. METHODS A total of 8884 participants was selected from the 2018 CLHLS database. The 10-item Center for Epidemiologic Studies Depression Scale (CESD-10) and the Generalized Anxiety Disorder Scale-7 (GAD-7) were used to assess depression and anxiety, respectively. Participants were divided into the exercise and the nonexercise groups using propensity score matching to minimize the influence of confounding variables. Depression-anxiety symptom networks were constructed, and network indexes were computed for each group, based on various packages of R. By computing network connectivity, invulnerability simulation was used to investigate the role of physical exercise in network robustness. RESULTS Both groups had D3 (sad mood), A4 (trouble relaxing) and A2 (uncontrollably worry) as central symptoms. In the exercise group, A1 (nervousness), A3 (too much worry) and D1 (bothered by little things) were the strongest bridge nodes. In the nonexercise group, A1 (nervousness), D1 (bothered by little things) and A4 (trouble relaxing) played this role. Participation in physical exercise decreased the centrality of D9 (cannot get doing) but increased the centrality of A3 (too much worry). Furthermore, the exercise group had higher network invulnerability than the nonexercise group under random attack conditions. CONCLUSIONS Physical exercise affected core symptoms of depression-anxiety and the interactions of symptoms. Targeting central or bridge nodes may be an effective intervention for alleviating the comorbidity. Increased network invulnerability manifested the positive effects of physical exercise.
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Affiliation(s)
- Weixia Zhang
- Department of Physical Education, Northwestern Polytechnical University, Xi'an, Shanxi, China
| | - Kechuang Zhang
- School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, Shanxi, China
| | - Mengbi Yang
- School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, Shanxi, China
| | - Shubin Si
- School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, Shanxi, China
- Key Laboratory of Industrial Engineering and Intelligent Manufacturing, Ministry of Industry and Information Technology, Xi'an, Shanxi, China
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Li Q, Dou M, Zhang J, Jia P, Wang X, Lei D, Li J, Yang W, Yang R, Yang C, Zhang X, Hao Q, Geng X, Zhang Y, Liu Y, Guo Z, Yao C, Cai Z, Si S, Geng Z, Zhang D. A Bayesian network model to predict neoplastic risk for patients with gallbladder polyps larger than 10 mm based on preoperative ultrasound features. Surg Endosc 2023:10.1007/s00464-023-10056-3. [PMID: 37041283 DOI: 10.1007/s00464-023-10056-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 03/26/2023] [Indexed: 04/13/2023]
Abstract
BACKGROUND Polyp size of 10 mm is insufficient to discriminate neoplastic and non-neoplastic risk in patients with gallbladder polyps (GPs). The aim of the study is to develop a Bayesian network (BN) prediction model to identify neoplastic polyps and create more precise criteria for surgical indications in patients with GPs lager than 10 mm based on preoperative ultrasound features. METHODS A BN prediction model was established and validated based on the independent risk variables using data from 759 patients with GPs who underwent cholecystectomy from January 2015 to August 2022 at 11 tertiary hospitals in China. The area under receiver operating characteristic curves (AUCs) were used to evaluate the predictive ability of the BN model and current guidelines, and Delong test was used to compare the AUCs. RESULTS The mean values of polyp cross-sectional area (CSA), long, and short diameter of neoplastic polyps were higher than those of non-neoplastic polyps (P < 0.0001). Independent neoplastic risk factors for GPs included single polyp, polyp CSA ≥ 85 mm 2, fundus with broad base, and medium echogenicity. The accuracy of the BN model established based on the above independent variables was 81.88% and 82.35% in the training and testing sets, respectively. Delong test also showed that the AUCs of the BN model was better than that of JSHBPS, ESGAR, US-reported, and CCBS in training and testing sets, respectively (P < 0.05). CONCLUSION A Bayesian network model was accurate and practical for predicting neoplastic risk in patients with gallbladder polyps larger than 10 mm based on preoperative ultrasound features.
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Affiliation(s)
- Qi Li
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China
| | - Minghui Dou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China
| | - Jingwei Zhang
- Department of Industrial Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
| | - Pengbo Jia
- Department of Hepatobiliary Surgery, The First People's Hospital of Xianyang City, Xianyang, 712000, Shaanxi, China
| | - Xintuan Wang
- Department of Hepatobiliary Surgery, The First People's Hospital of Xianyang City, Xianyang, 712000, Shaanxi, China
| | - Da Lei
- Department of Hepatobiliary Surgery, Central Hospital of Baoji City, Baoji, 721000, Shaanxi, China
| | - Junhui Li
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi, China
| | - Wenbin Yang
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi, China
| | - Rui Yang
- Department of Hepatobiliary Surgery, Central Hospital of Hanzhong City, Hanzhong, 723000, Shaanxi, China
| | - Chenglin Yang
- Department of General Surgery, Central Hospital of Ankang City, Ankang, 725000, Shaanxi, China
| | - Xiaodi Zhang
- Department of General Surgery, No. 215 Hospital of Shaanxi Nuclear Industry, Xianyang, 712000, Shaanxi, China
| | - Qiwei Hao
- Department of Hepatobiliary Surgery, The Second Hospital of Yulin City, Yulin, 719000, Shaanxi, China
| | - Xilin Geng
- Department of Hepatobiliary Surgery, Shaanxi Provincial People's Hospital, Xi'an, 710068, Shaanxi, China
| | - Yu Zhang
- Department of Hepatobiliary Surgery, Shaanxi Provincial People's Hospital, Xi'an, 710068, Shaanxi, China
| | - Yimin Liu
- Department of Hepatobiliary Surgery, People's Hospital of Baoji City, Baoji, 721000, Shaanxi, China
| | - Zhihua Guo
- Department of Hepatobiliary Surgery, People's Hospital of Baoji City, Baoji, 721000, Shaanxi, China
| | - Chunhe Yao
- Department of General Surgery, Xianyang Hospital of Yan'an University, Xianyang, 712000, Shaanxi, China
| | - Zhiqiang Cai
- Department of Industrial Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
| | - Shubin Si
- Department of Industrial Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
| | - Zhimin Geng
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China.
| | - Dong Zhang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China.
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Meng X, Lin J, Fan Y, Gao F, Fenoaltea EM, Cai Z, Si S. Coupled disease-vaccination behavior dynamic analysis and its application in COVID-19 pandemic. Chaos Solitons Fractals 2023; 169:113294. [PMID: 36891356 PMCID: PMC9977628 DOI: 10.1016/j.chaos.2023.113294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 01/20/2023] [Accepted: 02/19/2023] [Indexed: 06/18/2023]
Abstract
Predicting the evolutionary dynamics of the COVID-19 pandemic is a complex challenge. The complexity increases when the vaccination process dynamic is also considered. In addition, when applying a voluntary vaccination policy, the simultaneous behavioral evolution of individuals who decide whether and when to vaccinate must be included. In this paper, a coupled disease-vaccination behavior dynamic model is introduced to study the coevolution of individual vaccination strategies and infection spreading. We study disease transmission by a mean-field compartment model and introduce a non-linear infection rate that takes into account the simultaneity of interactions. Besides, the evolutionary game theory is used to investigate the contemporary evolution of vaccination strategies. Our findings suggest that sharing information with the entire population about the negative and positive consequences of infection and vaccination is beneficial as it boosts behaviors that can reduce the final epidemic size. Finally, we validate our transmission mechanism on real data from the COVID-19 pandemic in France.
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Affiliation(s)
- Xueyu Meng
- Department of Industrial Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
- Ministry of Industry and Information Technology Key Laboratory of Industrial Engineering and Intelligent Manufacturing, Northwestern Polytechnical University, Xi'an 710072, China
- Department of Physics, University of Fribourg, Fribourg 1700, Switzerland
| | - Jianhong Lin
- Department of Physics, University of Fribourg, Fribourg 1700, Switzerland
- Department of Management, Technology and Economics, ETH Zürich, Scheuchzerstrasse 7, CH-8092 Zürich, Switzerland
| | - Yufei Fan
- Department of Industrial Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
- Ministry of Industry and Information Technology Key Laboratory of Industrial Engineering and Intelligent Manufacturing, Northwestern Polytechnical University, Xi'an 710072, China
| | - Fujuan Gao
- Department of Physics, University of Fribourg, Fribourg 1700, Switzerland
| | | | - Zhiqiang Cai
- Department of Industrial Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
- Ministry of Industry and Information Technology Key Laboratory of Industrial Engineering and Intelligent Manufacturing, Northwestern Polytechnical University, Xi'an 710072, China
| | - Shubin Si
- Department of Industrial Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
- Ministry of Industry and Information Technology Key Laboratory of Industrial Engineering and Intelligent Manufacturing, Northwestern Polytechnical University, Xi'an 710072, China
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Li Q, Zhang J, Cai Z, Jia P, Wang X, Geng X, Zhang Y, Lei D, Li J, Yang W, Yang R, Zhang X, Yang C, Yao C, Hao Q, Liu Y, Guo Z, Si S, Geng Z, Zhang D. A Bayesian network prediction model for gallbladder polyps with malignant potential based on preoperative ultrasound. Surg Endosc 2023; 37:518-527. [PMID: 36002683 DOI: 10.1007/s00464-022-09532-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Accepted: 07/31/2022] [Indexed: 02/07/2023]
Abstract
BACKGROUND It is important to identify gallbladder polyps (GPs) with malignant potential and avoid unnecessary cholecystectomy by constructing prediction model. The aim of the study is to develop a Bayesian network (BN) prediction model for GPs with malignant potential in a long diameter of 8-15 mm based on preoperative ultrasound. METHODS The independent risk factors for GPs with malignant potential were screened by χ2 test and Logistic regression model. Prediction model was established and validated using data from 1296 patients with GPs who underwent cholecystectomy from January 2015 to December 2019 at 11 tertiary hospitals in China. A BN model was established based on the independent risk variables. RESULTS Independent risk factors for GPs with malignant potential included age, number of polyps, polyp size (long diameter), polyp size (short diameter), and fundus. The BN prediction model identified relationships between polyp size (long diameter) and three other variables [polyp size (short diameter), fundus and number of polyps]. Each variable was assigned scores under different status and the probabilities of GPs with malignant potential were classified as [0-0.2), [0.2-0.5), [0.5-0.8) and [0.8-1] according to the total points of [- 337, - 234], [- 197, - 145], [- 123, - 108], and [- 62,500], respectively. The AUC was 77.38% and 75.13%, and the model accuracy was 75.58% and 80.47% for the BN model in the training set and testing set, respectively. CONCLUSION A BN prediction model was accurate and practical for predicting GPs with malignant potential patients in a long diameter of 8-15 mm undergoing cholecystectomy based on preoperative ultrasound.
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Affiliation(s)
- Qi Li
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China
| | - Jingwei Zhang
- Department of Industrial Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
| | - Zhiqiang Cai
- Department of Industrial Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
| | - Pengbo Jia
- Department of Hepatobiliary Surgery, The First People's Hospital of Xianyang City, Xianyang, 712000, Shaanxi, China
| | - Xintuan Wang
- Department of Hepatobiliary Surgery, The First People's Hospital of Xianyang City, Xianyang, 712000, Shaanxi, China
| | - Xilin Geng
- Department of Hepatobiliary Surgery, Shaanxi Provincial People's Hospital, Xi'an, 710068, Shaanxi, China
| | - Yu Zhang
- Department of Hepatobiliary Surgery, Shaanxi Provincial People's Hospital, Xi'an, 710068, Shaanxi, China
| | - Da Lei
- Department of Hepatobiliary Surgery, Central Hospital of Baoji City, Baoji, 721000, Shaanxi, China
| | - Junhui Li
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi, China
| | - Wenbin Yang
- Department of General Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi, China
| | - Rui Yang
- Department of Hepatobiliary Surgery, Central Hospital of Hanzhong City, Hanzhong, 723000, Shaanxi, China
| | - Xiaodi Zhang
- Department of General Surgery, No. 215 Hospital of Shaanxi Nuclear Industry, Xianyang, 712000, Shaanxi, China
| | - Chenglin Yang
- Department of General Surgery, Central Hospital of Ankang City, Ankang, 725000, Shaanxi, China
| | - Chunhe Yao
- Department of General Surgery, Xianyang Hospital of Yan'an University, Xianyang, 712000, Shaanxi, China
| | - Qiwei Hao
- Department of Hepatobiliary Surgery, The Second Hospital of Yulin City, Yulin, 719000, Shaanxi, China
| | - Yimin Liu
- Department of Hepatobiliary Surgery, People's Hospital of Baoji City, Baoji, 721000, Shaanxi, China
| | - Zhihua Guo
- Department of Hepatobiliary Surgery, People's Hospital of Baoji City, Baoji, 721000, Shaanxi, China
| | - Shubin Si
- Department of Industrial Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
| | - Zhimin Geng
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China.
| | - Dong Zhang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China.
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Li Y, Du X, Wang X, Si S. Industrial gearbox fault diagnosis based on multi-scale convolutional neural networks and thermal imaging. ISA Trans 2022; 129:309-320. [PMID: 35305817 DOI: 10.1016/j.isatra.2022.02.048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 02/26/2022] [Accepted: 02/26/2022] [Indexed: 06/14/2023]
Abstract
Infrared thermal technology plays a vital role in the health condition monitoring of gearbox. In the traditional infrared thermal technology-based methods, Gaussian pyramid is applied as the feature extraction approach, which has disadvantages of noise influence and information missing. Focus on such disadvantages, an improved multi-scale decomposition method combined with convolutional neural network is proposed to extract the fault features of the multi-scale infrared images in this paper. It can enlarge the data length at large scales, and thus reduce the fluctuations of feature values and reserve the fault information. The effectiveness of the proposed method is validated using the experiment infrared data of one industrial gearbox. Results demonstrate that our proposed method has the best performance comparing with five methods.
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Affiliation(s)
- Yongbo Li
- School of Aeronautics, Northwestern Polytechnical University, Xian, Shanxi, 710072, China.
| | - Xiaoqiang Du
- School of Mechanical Engineering, Polytechnical University, Xian, Shanxi, 710072, China
| | - Xianzhi Wang
- School of Mechanical Engineering, Polytechnical University, Xian, Shanxi, 710072, China
| | - Shubin Si
- School of Mechanical Engineering, Polytechnical University, Xian, Shanxi, 710072, China
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Wu C, Si S. Bivariate copula-based CUSUM charts for monitoring conditional nonlinear processes with first-order autocorrelation. J STAT COMPUT SIM 2022. [DOI: 10.1080/00949655.2022.2066104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Cang Wu
- School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, People's Republic of China
- School of Mechanical Engineering, Lanzhou University of Technology, Lanzhou, Gansu, People's Republic of China
| | - Shubin Si
- School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, People's Republic of China
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Ho C, Brennan A, Dinh D, Lefkovits J, Liew D, Si S, Reid C, Norman R. Prior Coronary Artery Bypass Graft Surgery Impacts 30-Day Quality of Life After Percutaneous Coronary Intervention: Evidence From the Victorian Cardiac Outcomes Registry (VCOR). Heart Lung Circ 2022. [DOI: 10.1016/j.hlc.2022.06.415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Meng X, Cai Z, Si S, Duan D. Analysis of epidemic vaccination strategies on heterogeneous networks: Based on SEIRV model and evolutionary game. Appl Math Comput 2021; 403:126172. [PMID: 33758440 PMCID: PMC7977478 DOI: 10.1016/j.amc.2021.126172] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 01/31/2021] [Accepted: 03/04/2021] [Indexed: 06/12/2023]
Abstract
Nowadays, vaccination is the most effective way to control the epidemic spreading. In this paper, an epidemic SEIRV (susceptible-exposed-infected-removed -vaccinated) model and an evolutionary game model are established to analyze the difference between mandatory vaccination method and voluntary vaccination method on heterogeneous networks. Firstly, we divide the population into four categories, including susceptible individuals, exposed individuals, infected individuals and removed individuals. Based on the mean field approximation theory, differential equations are developed to characterize the changes of the proportions of the four groups over time under mandatory vaccination. Then through the analysis of the differential equations, the disease-free equilibrium point (DFE) and the endemic disease equilibrium point (EDE) are obtained. Also, the basic reproduction number is obtained by the next-generation matrix method and the stability analysis of the equilibrium points is performed. Next, by considering factors such as vaccination cost, treatment cost and government subsidy rate, differential equations are established to represent the change of vaccination rate over time. By analyzing the final vaccination coverage rate, we can get the minimum vaccination cost to make infectious disease disappear. Finally, the Monte Carlo method is used for numerical simulation to verify the results obtained from the theoretical analysis. Using the SARS-Cov-2 pandemic data from Wuhan, China, the experimental results show that when the effectiveness rate of vaccination is 0.75, the vaccination cost is not higher than 0.886 so that the vaccination strategy can be spread among the population. If mandatory vaccination is adopted, the minimum vaccination rate is 0.146.
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Affiliation(s)
- Xueyu Meng
- Department of Industrial Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
- Ministry of Industry and Information Technology Key Laboratory of Industrial Engineering and Intelligent Manufacturing, Northwestern Polytechnical University, Xi'an 710072, China
| | - Zhiqiang Cai
- Department of Industrial Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
- Ministry of Industry and Information Technology Key Laboratory of Industrial Engineering and Intelligent Manufacturing, Northwestern Polytechnical University, Xi'an 710072, China
| | - Shubin Si
- Department of Industrial Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
- Ministry of Industry and Information Technology Key Laboratory of Industrial Engineering and Intelligent Manufacturing, Northwestern Polytechnical University, Xi'an 710072, China
| | - Dongli Duan
- School of Information and Control Engineering, Xi'an University of Architecture and Technology, Xi'an 710311, China
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Si S, Zheng B, Wang Z, Niu Z. Does surgery benefit patients with oligometastatic or metastatic prostate cancer? - A retrospective cohort study and meta-analysis. Prostate 2021; 81:736-744. [PMID: 34056739 DOI: 10.1002/pros.24170] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 05/13/2021] [Accepted: 05/14/2021] [Indexed: 11/11/2022]
Abstract
BACKGROUND To evaluate long-term oncological outcomes of radical prostatectomy (RP) plus androgen deprivation therapy (ADT) in oligometastatic prostate cancer (PCa) patients. METHODS Our study included oligometastatic PCa patients hospitalized between January 1, 2010 and December 31, 2015, who received ADT with or without RP. We evaluated survival by employing Kaplan-Meier methods, with log-rank tests and univariate and multivariate Cox regression analyses. A meta-analysis of previously published studies was additionally performed. RESULTS The median follow-up times of both groups were 68.4 months (interquartile range = 56.5-85.0). In this cohort study, significant statistical difference in preoperative total prostate-specific antigen (tPSA; p = .121), clinical T stage (p = .115), and N stage (p = .394) were not found between the two groups. Meanwhile, the difference in overall survival (OS) between the two groups did not reach statistical significance (p = .649). A significant difference was not observed in castration-resistant prostate cancer (CRPC)-free survival between two groups as well (p = .183). Numbers of metastases might be an independent prognosis factor (p = .05) for OS, and postoperative tPSA is a risk predictor for CRPC-free survival (p = .032). A meta-analysis of four relevant studies demonstrated significant statistical difference in clinical improvement with RP plus ADT over ADT alone in OS survival (p < .001; hazard ratio [HR] = 0.51; 95% confidence interval [CI] = 0.38-0.69) instead of CRPC-free survival (p = .42; HR = 0.86; 95% CI = 0.59-1.24). CONCLUSION The addition of RP to ADT for the treatment of oligometastatic PCa was associated with an improved OS instead of CRPC-free survival.
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Affiliation(s)
- Shubin Si
- The School of Medicine, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
- Department of Urology, People's Hospital of Yiyuan County, Zibo, Shandong, China
| | - Bin Zheng
- The School of Medicine, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Zhenlin Wang
- Department of Urology, Lingcheng People's Hospital, Dezhou, Shandong, China
| | - Zhihong Niu
- The School of Medicine, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, China
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
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Cheng F, Zheng B, Si S, Wang J, Zhao G, Yao Z, Niu Z, He W. The Roles of CircRNAs in Bladder Cancer: Biomarkers, Tumorigenesis Drivers, and Therapeutic Targets. Front Cell Dev Biol 2021; 9:666863. [PMID: 34350174 PMCID: PMC8326561 DOI: 10.3389/fcell.2021.666863] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 06/14/2021] [Indexed: 11/30/2022] Open
Abstract
Bladder cancer (BCa) is the most prevalent malignancy of the urinary system. Circular RNAs (circRNAs), a novel subtype of non-coding RNAs, play a crucial role in physiological and developmental processes. CircRNAs mainly function as regulators of splicing process and transcription, microRNA sponges, and protein brackets. Recent advances in understanding the pathogenesis of BCa have led to the identification of an abundance of dysregulated circRNAs associated with BCa. These aberrantly expressed circRNAs eventually lead to abnormalities in biological, genetic, and epigenetic information. In this review, we introduce the potential of circRNAs as biomarkers for BCa diagnosis and prognosis. Notably, diverse mechanisms have been proposed for circRNAs driving carcinogenesis, including increasing cell proliferation, promoting invasive and migratory capacity, enhancing endothelial–mesenchymal transition, sustaining stemness, and enabling resistance to chemotherapy. Importantly, a full understanding of circRNA mechanisms is needed to mine promising therapeutic approaches for targeting BCa. In this paper, we present the latest advances in circRNAs and systemically summarize the characteristics and mechanisms of circRNAs in BCa, providing potential perspectives for BCa treatment.
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Affiliation(s)
- Fajuan Cheng
- Department of Nephrology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.,Department of Nephrology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Bin Zheng
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.,Department of Urology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Shubin Si
- Department of Urology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China.,Department of Urology, People's Hospital of Yiyuan County, Zibo, China
| | - Jianwei Wang
- Department of Urology, Shandong Provincial ENT Hospital Affiliated to Shandong University, Jinan, China
| | - Guiting Zhao
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Zhongshun Yao
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China
| | - Zhihong Niu
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.,Department of Urology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Wei He
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, China.,Department of Urology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, China
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Wu Y, Li Q, Cai Z, Zhang Y, Qiu Y, Yang N, Song T, Li S, Lou J, Li J, Mao X, Chen C, Zhang D, Si S, Geng Z, Tang Z. Survival prediction for gallbladder carcinoma after curative resection: Comparison of nomogram and Bayesian network models. Eur J Surg Oncol 2020; 46:2106-2113. [PMID: 32807616 DOI: 10.1016/j.ejso.2020.07.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 06/24/2020] [Accepted: 07/07/2020] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND In this study, we developed a nomogram and a Bayesian network (BN) model for prediction of survival in gallbladder carcinoma (GBC) patients following surgery and compared the performance of the two models. METHODS Survival prediction models were established and validated using data from 698 patients with GBC who underwent curative-intent resection between 2008 and 2017 at one of six Chinese tertiary hospitals. Model construction and internal validation were performed using data from 381 patients at one hepatobiliary center, and external validation was then performed using data from 317 patients at the other five centers. A BN model and a nomogram model were constructed based on the independent prognostic variables. Performance of the BN and nomogram models was compared based on area under receiver operating characteristic curves (AUC), model accuracy, and a confusion matrix. RESULTS Independent prognostic variables included age, pathological grade, liver infiltration, T stage, N stage, and margin. In internal validation, AUC was 84.14% and 78.22% for the BN and nomogram, respectively, and model accuracy was 75.65% and 72.17%, respectively. In external validation, AUC was 76.46% and 70.19% for the BN and nomogram, respectively, with model accuracy of 66.88% and 60.25%, respectively. Based on the confusion matrix, the nomogram had a higher true positive rate but a substantially lower true negative rate compared to the BN. CONCLUSION A BN model was more accurate than a Cox regression-based nomogram for prediction of survival in GBC patients undergoing curative-intent resection.
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Affiliation(s)
- Yuhan Wu
- Department of Industrial Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
| | - Qi Li
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China
| | - Zhiqiang Cai
- Department of Industrial Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
| | - Yongjie Zhang
- Department of Biliary Surgery, Eastern Hepatobiliary Hospital Affiliated to Naval Medical University, Shanghai, 200433, China
| | - Yinghe Qiu
- Department of Biliary Surgery, Eastern Hepatobiliary Hospital Affiliated to Naval Medical University, Shanghai, 200433, China
| | - Ning Yang
- Department of Biliary Surgery, Eastern Hepatobiliary Hospital Affiliated to Naval Medical University, Shanghai, 200433, China
| | - Tianqiang Song
- Department of Hepatobiliary Oncology, Tianjin Medical University Cancer Hospital, Tianjin, 300060, China
| | - Shengping Li
- Department of Hepatobiliary Oncology, Sun Yat-sen University Cancer Center, Guangzhou, 510060, Guangdong, China
| | - Jianying Lou
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China
| | - Jiangtao Li
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, 310009, Zhejiang, China
| | - Xianhai Mao
- Department of Hepatobiliary Surgery, Hunan Provincial People's Hospital, Changsha, 410005, Hunan, China
| | - Chen Chen
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China
| | - Dong Zhang
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China
| | - Shubin Si
- Department of Industrial Engineering, School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an, 710072, Shaanxi, China
| | - Zhimin Geng
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China.
| | - Zhaohui Tang
- Department of General Surgery, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, 200092, China.
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Duan D, Lv C, Si S, Wang Z, Li D, Gao J, Havlin S, Stanley HE, Boccaletti S. Universal behavior of cascading failures in interdependent networks. Proc Natl Acad Sci U S A 2019; 116:22452-22457. [PMID: 31624122 PMCID: PMC6842597 DOI: 10.1073/pnas.1904421116] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Catastrophic and major disasters in real-world systems, such as blackouts in power grids or global failures in critical infrastructures, are often triggered by minor events which originate a cascading failure in interdependent graphs. We present here a self-consistent theory enabling the systematic analysis of cascading failures in such networks and encompassing a broad range of dynamical systems, from epidemic spreading, to birth-death processes, to biochemical and regulatory dynamics. We offer testable predictions on breakdown scenarios, and, in particular, we unveil the conditions under which the percolation transition is of the first-order or the second-order type, as well as prove that accounting for dynamics in the nodes always accelerates the cascading process. Besides applying directly to relevant real-world situations, our results give practical hints on how to engineer more robust networked systems.
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Affiliation(s)
- Dongli Duan
- School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
- School of Information and Control Engineering, Xi'an University of Architecture and Technology, Xi'an 710311, China
| | - Changchun Lv
- School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China
| | - Shubin Si
- School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China;
| | - Zhen Wang
- School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China;
- Center for OPTical IMagery Analysis and Learning, Northwestern Polytechnical University, Xi'an 710072, China
| | - Daqing Li
- School of Reliability and Systems Engineering, Beihang University, Beijing 100191, China
| | - Jianxi Gao
- Department of Computer Science, Rensselaer Polytechnic Institute, Troy, NY 12180
- Network Science and Technology Center, Rensselaer Polytechnic Institute, Troy, NY 12180
| | - Shlomo Havlin
- Department of Physics, Bar-Ilan University, Ramat-Gan 52900, Israel
| | - H Eugene Stanley
- Center for Polymer Studies, Department of Physics, Boston University, Boston, MA 02215;
| | - Stefano Boccaletti
- Institute of Complex Systems, Consiglio Nazionale delle Ricerche, Florence 50019, Italy
- Unmanned Systems Research Institute, Northwestern Polytechnical University, Xi'an 710072, China
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Xu L, Tan HD, Liu LG, Liu XL, Huang J, Si S, Zhou WY, Sun YL, Yang ZY. [Diagnosis and treatment of pancreatic tuberculosis: experiences of 10 cases]. Zhonghua Jie He He Hu Xi Za Zhi 2019; 42:357-360. [PMID: 31137111 DOI: 10.3760/cma.j.issn.1001-0939.2019.05.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objectives: To study the clinical characteristics of pancreatic tuberculosis, and therefore to improve the diagnosis and treatment of this disease. Methods: The clinical data of 10 patients with pancreatic tuberculosis form 1990 to 2017 were reviewed, including clinical characteristics, laboratory tests and imaging features. Results: The ten patients aged 28 to 71 (median 56) years. All of them presented varying degrees of abdominal pain and weight loss (3 to 8 kg). Hypo-echoic pancreatic masses were shown by abdominal ultra-sound in 7 cases, and cystic-solid masses with thick wall was shown by abdominal CT scan in 4 cases, but dilatation of the pancreatic duct was found in none of the 10 cases. Hemoglobin levels lower than 12 g/L were found in 6 cases, and ESR more than 20 mm/1 h was present in 7 cases. Four cases received PPD test, but only one was positive. CA19-9 was found to be higher than normal (27 IU/ml) in 3 cases (39.2 IU/ml, 125.7 IU/ml, 88.9 IU/ml respectively). Three cases received T-spot.TB tests, and all the results were positive. Seven cases received laparotomy, and the other 3 received endoscopic ultrasound-guided biopsy. Caseous necrosis and Langerhans cells were found in all the 10 cases. Nine patients were treated by 6 to 12 months' anti-tuberculosis therapies, and at 1-5 years' follow-up, 8 were cured and 1 improved. Conclusions: The manifestations of pancreatic tuberculosis were easy to be confused with other diseases, and therefore a comprehensive understanding of history and careful examinations were important for a correct diagnosis. Once the diagnosis was made, prompt standard anti-tuberculosis therapy could lead to a favorable outcome.
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Affiliation(s)
- L Xu
- Department of Hepatobiliary Surgery, China-Japan Friendship Hospital, Beijing 100029, China
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Wang X, Si S, Wei Y, Li Y. The Optimized Multi-Scale Permutation Entropy and Its Application in Compound Fault Diagnosis of Rotating Machinery. Entropy (Basel) 2019; 21:e21020170. [PMID: 33266886 PMCID: PMC7514652 DOI: 10.3390/e21020170] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Revised: 02/02/2019] [Accepted: 02/03/2019] [Indexed: 12/25/2022]
Abstract
Multi-scale permutation entropy (MPE) is a statistic indicator to detect nonlinear dynamic changes in time series, which has merits of high calculation efficiency, good robust ability, and independence from prior knowledge, etc. However, the performance of MPE is dependent on the parameter selection of embedding dimension and time delay. To complete the automatic parameter selection of MPE, a novel parameter optimization strategy of MPE is proposed, namely optimized multi-scale permutation entropy (OMPE). In the OMPE method, an improved Cao method is proposed to adaptively select the embedding dimension. Meanwhile, the time delay is determined based on mutual information. To verify the effectiveness of OMPE method, a simulated signal and two experimental signals are used for validation. Results demonstrate that the proposed OMPE method has a better feature extraction ability comparing with existing MPE methods.
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Affiliation(s)
- Xianzhi Wang
- School of Mechanical Engineering, Northwestern Polytechnical University, Xi’an 710072, China
| | - Shubin Si
- School of Mechanical Engineering, Northwestern Polytechnical University, Xi’an 710072, China
| | - Yu Wei
- Department of Astronautical Science and Mechanics, Harbin Institute of Technology (HIT), Harbin 150001, China
- Correspondence:
| | - Yongbo Li
- School of Aeronautics, Northwestern Polytechnical University, Xi’an 710072, China
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Liew S, Dinh D, Liew D, Brennan A, Si S, Duffy S, Lefkovits J, Stub D. Prevalence, Outcomes and Cost Implications of Patients Undergoing Same Day Discharge After Elective Percutaneous Coronary Intervention (PCI). Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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16
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Huang J, Liu XL, Tan HD, Sun YL, Liu LG, Xu L, Si S, Zhou WY, Yang ZY. [The epidemiological and clinical characteristics of liver hemangioma in health adults]. Zhonghua Yi Xue Za Zhi 2018; 98:2925-2928. [PMID: 30293351 DOI: 10.3760/cma.j.issn.0376-2491.2018.36.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To report the epidemiological and clinical characteristics of liver hemangioma in health adults from a large sample of Health Examination Database. Methods: A retrospective study was performed to analyze the epidemiological and clinical Characteristics of liver hemangioma from people who underwent examination in China-Japan friendship hospital from 2014 to 2016. The analysis was also included the relationship between gender or age and the incidence and tumor size. Results: A total of 83 964 healthy adults (age≥18) were included in the study. The overall incidence of liver hemangioma was 2.95%. There was no significant difference of liver hemangiomas incidence between male which was 3.03%, and which was 2.88% in female. Liver hemangiomas incidence had shown obviously increased with patients' age, as the evidence indicating that the prevalence of liver hemangioma in <30 age group was only 1.87%, and the prevalence of liver hemangioma in 41-50 age group raised to 3.72%. While the size of liver hemangioma in different genders was also increasing with age, the tumor size of liver hemangioma in <30 age group was the smallest. Under 50 years old, the size of female patients' liver hemangioma was larger than that of male patients in each age group. The size of female patients' liver hemangioma had obviously decreased over 60 years old. Conclusion: The progress of liver hemangioma was highly influenced by age and gender.
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Affiliation(s)
- J Huang
- Department of General Surgery, Ching-Japan Friendship Hospital, Beijing 100029, China
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17
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Newton P, Si S, Reid C, Macdonald P. 30-Day and 12-Month Outcomes from the NSW Heart Failure SNAPSHOT. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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18
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Yudi M, Clark D, Tsang D, Jelinek M, Kalten K, Joshi S, Phan K, Nasis A, Amerena J, MacIsaac A, Arunothayaraj S, Si S, Reid C, Farouque O. SMARTphone-based, Early Cardiac REHABilitation in Patients with Acute Coronary Syndromes [SMART-REHAB Trial]: A Randomised Controlled Trial. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.710] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Affiliation(s)
- Yanqing Wen
- School of Mechatronics, Northwestern Polytechnical University, Xi'an, Shaanxi, China
- College of Mathematics and Computer Science, Shanxi Datong University, Datong, Shanxi, China
| | - Lirong Cui
- School of Management and Economics, Beijing Institute of Technology, Beijing, China
| | - Shubin Si
- School of Mechatronics, Northwestern Polytechnical University, Xi'an, Shaanxi, China
| | - Baoliang Liu
- College of Mathematics and Computer Science, Shanxi Datong University, Datong, Shanxi, China
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Si S, Xu Y, Liu C, Liu P, Wang X, Hong B. Identification of a novel upregulator of ABCA1 and SRB1 expression with the action of regulating cholesterol metabolism in vitro and in vivo. Atherosclerosis 2016. [DOI: 10.1016/j.atherosclerosis.2016.07.590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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21
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Guo PC, Yan SQ, Si S, Bai CY, Zhao Y, Zhang Y, Yao JY, Li YM. De novo assembly and characterization of farmed blue fox (Alopex lagopus) global transcriptome using Illumina paired-end sequencing. Genet Mol Res 2016; 15:gmr7603. [PMID: 27051000 DOI: 10.4238/gmr.15017603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The blue fox (Alopex lagopus), a coat-color variant of the Arctic fox, is a domesticated fur-bearing mammal. In the present study, transcriptome data generated from a pool of nine different tissues were obtained with Illumina HiSeq2500 paired-end sequencing technology. After filtering from raw reads, 32,358,290 clean reads were assembled into 161,269 transcripts and 97,252 unigenes by the Trinity fragment assembly software. Of the assembled unigenes, 37,967 were annotated in the National Center for Biotechnology Information (NCBI) Non-Redundant (NR) protein database and 26,264 in the Swiss-Prot database. Among the annotated unigenes, 24,839 and 24,267 were assigned using the Gene Ontology (GO) and euKaryotic Orthologous Groups (KOG) databases, respectively. Altogether, 17,057 unigenes were mapped onto 227 pathways using the Kyoto Encyclopedia of Genes and Genomes database. In addition, 6394 simple sequence repeats were identified by examining 12,965 unigenes (>1 kb), which could contribute to the development of molecular markers. This study generated transcriptome data for the blue fox that will promote further progress in expression profiling studies, and provide a good annotation basis for genomic studies.
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Affiliation(s)
- P C Guo
- College of Animal Science, Jilin University, Changchun, China
| | - S Q Yan
- College of Animal Science, Jilin University, Changchun, China
| | - S Si
- College of Animal Science, Jilin University, Changchun, China
| | - C Y Bai
- College of Animal Science, Jilin University, Changchun, China
| | - Y Zhao
- College of Animal Science, Jilin University, Changchun, China
| | - Y Zhang
- College of Animal Science, Jilin University, Changchun, China
| | - J Y Yao
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - Y M Li
- College of Animal Science, Jilin University, Changchun, China
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Yan SQ, Li YM, Bai CY, Guo PC, Si S, Sun JH, Zhao ZH. Identification of cDNA sequences and alternative splicing patterns of canine AMEL genes (AMELX and AMELY). Genet Mol Res 2015; 14:16241-6. [PMID: 26662417 DOI: 10.4238/2015.december.8.14] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Amelogenin is a major protein of the developing enamel matrix. There are two amelogenin genes (AMELX and AMELY) located on the X and Y chromosomes, respectively, in dogs. In the present study, we characterized full-length cDNAs and alternative splicing patterns of the AMEL genes in the tooth tissue of a dog by 5'- and 3'-rapid amplification of cDNA ends and AMEL-specific RT-PCR. Sequence analysis revealed that the coding regions of AMELX and AMELY were 579 and 576 bp (accession Nos. KP244310 and KP244311), respectively. The coding sequence of AMELX had 95.1% identity to that of AMELY. The AMEL genes on X and Y chromosomes were both expressed in developing tooth tissue. Eight different alternatively spliced transcripts were identified, five from AMELX and three from AMELY.
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Affiliation(s)
- S Q Yan
- College of Animal Science, Jilin University, Changchun, China
| | - Y M Li
- College of Animal Science, Jilin University, Changchun, China
| | - C Y Bai
- College of Animal Science, Jilin University, Changchun, China
| | - P C Guo
- College of Animal Science, Jilin University, Changchun, China
| | - S Si
- College of Animal Science, Jilin University, Changchun, China
| | - J H Sun
- College of Animal Science and Veterinary Medicine, Qingdao Agricultural University, Qingdao, China
| | - Z H Zhao
- College of Animal Science, Jilin University, Changchun, China
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Li YM, Si S, Guo PC, Li LL, Bai CY, Yan SQ. Cloning and identification of the ASIP gene in Chinese raccoon dog (Nyctereutes procyonoides procyonoides). Genet Mol Res 2015; 14:16312-6. [PMID: 26662425 DOI: 10.4238/2015.december.8.22] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The quantity, quality, and distribution of eumelanin and pheomelanin determine a wide variety of coat colors in animals. Three coat color variants exist in farmed wild-type Chinese raccoon dog (Nyctereutes procyonoides procyonoides), which is an important fur-bearing animal species. The ASIP gene is an important candidate gene for coat color variation in some species. In this study, the complete cDNA sequences of ASIP were amplified from a wild-type Chinese raccoon dog. Sequence analysis revealed the coding region of ASIP in Chinese raccoon dog to be 396-bp in length and two transcripts (accession Nos. KT224450 and KT224451) were identified due to the alternative use of exon 1 (1A and 1C). However, the alternative splicing pattern and the coding sequence of ASIP in three types of coat color variants were the same as those identified in the wild-type individual. Based on the results obtained in this study, we can exclude a role for alternative splicing of exon 1 and the coding sequence of ASIP in coat color variation in Chinese raccoon dog.
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Affiliation(s)
- Y M Li
- College of Animal Science, Jilin University, Changchun, China
| | - S Si
- College of Animal Science, Jilin University, Changchun, China
| | - P C Guo
- College of Animal Science, Jilin University, Changchun, China
| | - L L Li
- College of Animal Science, Jilin University, Changchun, China
| | - C Y Bai
- College of Animal Science, Jilin University, Changchun, China
| | - S Q Yan
- College of Animal Science, Jilin University, Changchun, China
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Abstract
BACKGROUND According to the analysis of the challenges faced by the current public health circumstances such as the sharp increase in elderly patients, limited medical personnel, resources and technology, the agent-based intelligent medical diagnosis system for patients (AIMDS) is proposed in this research. OBJECTIVE Based on advanced sensing technology and professional medical knowledge, the AIMDS can output the appropriate medical prescriptions and food prohibition when the physical signs and symptoms of the patient are inputted. METHODS Three core modules are designed include sensing module, intuition-based fuzzy set theory/medical diagnosis module, and medical knowledge module. RESULTS The result shows that the optimized prescription can reach the desired level, with great curative effect for patient disease, through a case study simulation. CONCLUSION The presented AIMDS can integrate sensor technique and intelligent medical diagnosis methods to make an accurate diagnosis, resulting in three-type of optimized descriptions for patient selection.
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Yan SQ, Bai CY, Qi SM, Li ML, Si S, Li YM, Sun JH. Cloning and association analysis of KIT and EDNRB polymorphisms with dominant white coat color in the Chinese raccoon dog (Nyctereutes procyonoides procyonoides). Genet Mol Res 2015; 14:6549-54. [PMID: 26125860 DOI: 10.4238/2015.june.12.8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The Chinese raccoon dog (Nyctereutes procyonoides procyonoides) is one of the most important fur-bearing animal species. The dominant white individual, a coat color variant in farmed Chinese raccoon dog, shows a completely white phenotype over the entire body. The KIT and EDNRB genes have been reported to be associated with the dominant white coat color in some mammalian species. In the present study, the full-length coding sequences of KIT and EDNRB were amplified from a dominant white and a wild-type Chinese raccoon dog. Sequence analysis revealed that the coding region of KIT and EDNRB in Chinese raccoon dog was 2919 and 1332 base pairs in length (accession No. KM083121 and KM083122), respectively, and 2 single-nucleotide polymorphisms (SNPs; c.600C>T and c.967G>A) in KIT and 1 SNP (c.259A>C) in EDNRB was found only in the dominant white individual. An alternative splicing site at the boundary of 4 and 5 of the KIT gene was identified in both individuals. We further investigated the association between the 3 SNPs of KIT and EDNRB and dominant white coat color by genotyping 18 individuals. We found no association between these SNPs and dominant white coat color. Based on these results, we can exclude the coding regions of the KIT and EDNRB genes as determinants of the dominant white coat color in Chinese raccoon dog.
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Affiliation(s)
- S Q Yan
- College of Animal Science, Jilin University, Changchun, China
| | - C Y Bai
- College of Animal Science, Jilin University, Changchun, China
| | - S M Qi
- College of Animal Science and Veterinary Medicine, Qingdao Agricultural University, Qingdao, China
| | - M L Li
- College of Animal Science, Jilin University, Changchun, China
| | - S Si
- College of Animal Science, Jilin University, Changchun, China
| | - Y M Li
- Northwest A&F University, Yangling, Shaanxi, China
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Sumru Bayin N, Si S, Modrek A, Song HR, Zagzag D, Hoang DM, Wadghiri YZ, Dolgalev I, Baysan M, Heguy A, Barcellos-Hoff MH, Placantonakis D. SC-04 * NON-UNIFORM NOTCH SIGNALING UNDERLIES HETEROGENEITY WITHIN THE GLIOBLASTOMA STEM CELL POPULATION. Neuro Oncol 2014. [DOI: 10.1093/neuonc/nou275.4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Xu Y, Liu Q, Zhao P, Li N, Lai F, Xu Y, He X, Jiang W, Hong B, Si S. 715 FORMONONETIN, A CLA1 UPREGULATOR, REDUCES ATHEROSCLEROTIC LESION FORMATION IN APOE−/− MICE. ATHEROSCLEROSIS SUPP 2011. [DOI: 10.1016/s1567-5688(11)70716-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Wang L, Bao Y, Xu Y, Yang Y, Wang L, Si S, Cho S, Hong B. 148 SALVIANOLIC ACID B CAN INHIBIT MACROPHAGE UPTAKE OF MODIFIED-LDL BY DIRECTLY BINDING TO TYPE B SCAVENGER RECEPTOR CD36. ATHEROSCLEROSIS SUPP 2011. [DOI: 10.1016/s1567-5688(11)70149-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Si S, Liu Y, Takala J, Sun S. Benchmarking and developing the operational competitiveness of Chinese state-owned manufacturing enterprises in a global context. IJIL 2010. [DOI: 10.1504/ijil.2010.030614] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Yang Y, Si S, Hong B. Abstract: P445 CHARACTERIZATION OF THE ISOFLAVONE PRATENSEIN AS A NOVEL TRANSCRIPTIONAL UP-REGULATOR OF SCAVERGER RECEPTOR BI IN HEPG2 CELLS. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)70740-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Wang L, Bao Y, Yang Y, Si S, Hong B. Abstract: P472 DISCOVERY OF ANTAGONISTS FOR HUMAN SCAVENGER RECEPTOR CD36 VIA AN ELISA-LIKE HIGH-THROUGHPUT SCREENING ASSAY. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)70767-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Zhang Z, Liu J, Xu Y, Jiang W, Hong B, Xie Z, Si S. Abstract: P438 IMB6791 STIMULATES CHOLESTEROL EFFLUX BY INCREASING THE BINDING OF APOLIPOPROTEIN A-I TO ATP-BINDING CASSETTE TRANSPORTER A1. ATHEROSCLEROSIS SUPP 2009. [DOI: 10.1016/s1567-5688(09)70733-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Panda DS, Choudhury NSK, Yedukondalu M, Si S, Gupta R. Evaluation of Gum of Moringa oleifera as a Binder and Release Retardant in Tablet Formulation. Indian J Pharm Sci 2008; 70:614-8. [PMID: 21394258 PMCID: PMC3038286 DOI: 10.4103/0250-474x.45400] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2007] [Revised: 06/28/2008] [Accepted: 09/27/2008] [Indexed: 11/25/2022] Open
Abstract
The present study was undertaken to find out the potential of gum from Moringa oleifera to act as a binder and release retardant in tablet formulations. The effect of calcium sulphate dihydrate (water insoluble) and lactose (water soluble) diluent on the release of propranolol hydrochloride was studied. The DSC thermograms of drug, gum and mixture of gum/drug indicated no chemical interaction. Tablets (F1, F2, F3, and F4) were prepared containing calcium sulphate dihydrate as diluent, propranolol hydrochloride as model drug using 10%, 8%, 6% and 4% w/v of gum solution as binder. Magnesium stearate was used as lubricant. Physical and technological properties of granules and tablets like flow rate, Carr index, Hausner ratio, angle of repose, hardness, friability and disintegration time were determined and found to be satisfactory. Tablets were prepared by wet granulation method containing calcium sulphate dihydrate as excipient, propranolol hydrochloride as model drug using 10%, 20% and 30% of gum as release retardant, magnesium stearate was used as lubricant. Similarly tablets were prepared replacing lactose with calcium sulphate dihydrate. Despite of the widely varying physico-chemical characteristics of the excipients, the drug release profiles were found to be similar. The drug release increased with increasing proportions of the excipient and decreased proportion of the gum irrespective of the solubility characteristics of the excipient. The values of release exponent 'n' are between 0.37 and 0.54. This implies that the release mechanism is Fickian. There is no evidence that the dissolution or erosion of the excipient has got any effect on the release of the drug. The t(50%) values for tablets containing calcium sulphate dihydrate were on an average 10%-15% longer than the tablets containing lactose as excipient. These relatively small differences in t(50%) values suggest that the nature of excipient used appeared to play a minor role in regulating the release, while the gum content was a major factor.
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Affiliation(s)
- D. S. Panda
- Institute of Pharmacy and Technology, Salipur, Cuttack-754 202, India
| | | | - M. Yedukondalu
- College of Pharmaceutical Sciences, Mohuda, Berhampur-760 001, India
| | - S. Si
- School of Pharmacy, ITER, Bhubaneswar-751 030, India
| | - R. Gupta
- Birla Institute of Technology, Mesra, Ranchi-835 215, India
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Sahu SK, Azam MA, Banerjee M, Acharrya S, Behera CC, Si S. Synthesis, characterization and biological activity of 2-methyl-3-aminoquinazolin-4(3H)-ones Schiff bases. J BRAZIL CHEM SOC 2008. [DOI: 10.1590/s0103-50532008000500023] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Affiliation(s)
- S. Si
- a Department of Chemistry , Tsinghua University , Beijing, 100084, PR China
- b Department of Chemistry , Beijing Normal University , Beijing, 100875, PR China
| | - C. Li
- a Department of Chemistry , Tsinghua University , Beijing, 100084, PR China
| | - R. Wang
- a Department of Chemistry , Tsinghua University , Beijing, 100084, PR China
| | - Y. Li
- a Department of Chemistry , Tsinghua University , Beijing, 100084, PR China
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Bose A, Gupta JK, Dash GK, Ghosh T, Si S, Panda DS. Diuretic and antibacterial activity of aqueous extract of Cleome rutidosperma D.C. Indian J Pharm Sci 2007. [DOI: 10.4103/0250-474x.33162] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Si S, Sun Y, Li Z, Ge W, Zhang X, Hu P, Huang Y, Chen G, Song H, Huang Y, Ma B, Li X, Sui Y. Gene therapy by membrane-expressed superantigen for α-fetoprotein-producing hepatocellular carcinoma. Gene Ther 2006; 13:1603-10. [PMID: 16855617 DOI: 10.1038/sj.gt.3302823] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Staphylococcus enterotoxin A (SEA) is a powerful immunostimulant, which can stimulate T cells bearing certain T-cell receptor beta-chain variable regions, when bound to major histocompatibility complex II molecules. In vivo administration of intact superantigen in sufficient therapeutic amounts risks unwanted cytotoxicity against normal cells. In this study, we used SEA fused with CD80 transmembrane region (named as SEAtm) driven by alpha-fetoprotein (AFP) enhancer/promoter to reduce toxicity and to improve safety and efficiency in the application of SEA. We demonstrated that SEAtm by adenovirus from the AFP enhancer/promoter (AdAFPSEA) could be expressed on the surface of AFP-producing cell line Hepa1-6 instead of non-AFP-producing cell lines. Hepa1-6 infected by recombinant adenovirus stimulated proliferation of splenocytes and activated CD4(+) and CD8(+) T cells in vitro. After AdAFPSEA was injected into the subcutaneously established hepatoma in vivo, the expression of SEA was detected in tumor tissues, which subsequently induced tumor-specific cytotoxic T cells in spleen. Moreover, hepatocellular carcinoma (HCC) xenografts were suppressed by treatment with AdAFPSEA and the survival time of treated mice was prolonged. These findings suggest that membrane-expressed SEA by adenovirus from AdAFPSEA can generate stronger local and systemic antitumor responses against HCC.
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Affiliation(s)
- S Si
- State Key Laboratory of Cancer Biology, Department of Pathology, XiJing Hospital, Fourth Military Medmedical University, Shanxi Province, Xi'an, People's Republic of China
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Kong W, Wei J, Abidi P, Lin M, Inaba S, Li C, Wang Y, Wang Z, Si S, Pan H, Wang S, Wu J, Li Z, Liu J, Jiang JD, Kong W. Th-W49:1 Berberine is a promising novel cholesterol-lowering drug working through a unique mechanism distinct from statins. ATHEROSCLEROSIS SUPP 2006. [DOI: 10.1016/s1567-5688(06)81865-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Sahu LK, Si S, Gupta JK. Simultaneous Assay of Lamivudine and Zidovudine in Combination Tablets by Derivative Spectrophotometry. Journal of Pharmaceutical Research 2004. [DOI: 10.18579/jpcrkc/2004/3/4/79692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Abstract
Based on the impedance characteristic of erythrocytes at high frequency, the response of piezoelectric crystal impedance (PCI) sensor in the erythrocyte suspension was derived and verified experimentally. A method of using PCI sensor to investigate erythrocyte aggregation-sedimentation phenomenon was proposed. From the frequency response of the PCI sensor, the erythrocyte aggregation time and sedimentation rate could be obtained during erythrocyte aggregation and sedimentation. With the present method, the effects of the erythrocyte deformability, the osmotic pressure and the coexisting macromolecules on the erythrocyte sedimentation rate were studied. The results show that the PCI sensor possesses some advantages, such as good sensitivity, simplicity of use and no thermal effect for the impedance study of erythrocyte aggregation and sedimentation.
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Affiliation(s)
- S Si
- Department of Chemistry, Central South University of Technology, Changsha, PR China.
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Tomoda H, Namatame I, Si S, Kawaguchi K, Masuma R, Namikoshi M, Omura S. Phenochalasins, inhibitors of lipid droplet formation in mouse macrophages, produced by Phomopsis sp. FT-0211. J Antibiot (Tokyo) 1999; 52:851-6. [PMID: 10604753 DOI: 10.7164/antibiotics.52.851] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Phomopsis sp. FT-0211, a soil isolate, was found to produce inhibitors of lipid droplet formation in mouse peritoneal macrophages. Structurally related new compounds designated phenochalasins A and B were isolated from the fermentation broth of the producing strain by solvent extraction, ODS column chromatography and preparative HPLC. Phenochalasin A caused a dose-dependent reduction in the number and size of lipid droplets in macrophages without any cytotoxic effect at least up to 20 microm. On the other hand, phenochalasin B showed inhibition of lipid droplet formation with a severe cytotoxic effect on macrophages.
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Affiliation(s)
- H Tomoda
- Graduate School of Pharmaceutical Sciences, Kitasato University, Japan
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Tomoda H, Namatame I, Tabata N, Kawaguchi K, Si S, Omura S. Structure elucidation of fungal phenochalasins, novel inhibitors of lipid droplet formation in mouse macrophages. J Antibiot (Tokyo) 1999; 52:857-61. [PMID: 10604754 DOI: 10.7164/antibiotics.52.857] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structures of phenochalasins A and B were elucidated by spectroscopic studies including various NMR measurements. Phenochalasins A and B have the cytochalasan skeleton of the 21,23-dioxa, 17,22-dione moiety containing unique phenyl and O-methyl phenyl residues at the C-10 position, respectively.
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Affiliation(s)
- H Tomoda
- Graduate School of Pharmaceutical Sciences, Kitasato University, Japan
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Namatame I, Tomoda H, Si S, Yamaguchi Y, Masuma R, Omura S. Beauveriolides, specific inhibitors of lipid droplet formation in mouse macrophages, produced by Beauveria sp. FO-6979. J Antibiot (Tokyo) 1999; 52:1-6. [PMID: 10092189 DOI: 10.7164/antibiotics.52.1] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Beauveria sp. FO-6979, a soil isolate, was found to produce inhibitors of lipid droplet formation in mouse peritoneal macrophages. A new compound beauveriolide III was isolated along with a known compound beauveriolide I from the fermentation broth of the producing strain by solvent extraction, ODS column chromatography, silica gel column chromatography and preparative HPLC. Beauveriolides I and III caused a reduction in the number and size of cytosolic lipid droplets in macrophages at 10 microM without any cytotoxic effect on macrophages.
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Affiliation(s)
- I Namatame
- Graduate School of Pharmaceutical Sciences, Kitasato University, and Research Center for Biological Function, The Kitasato Institute, Tokyo, Japan
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Namatame I, Tomoda H, Tabata N, Si S, Omura S. Structure elucidation of fungal beauveriolide III, a novel inhibitor of lipid droplet formation in mouse macrophages. J Antibiot (Tokyo) 1999; 52:7-12. [PMID: 10092190 DOI: 10.7164/antibiotics.52.7] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structure of fungal beauveriolide III, an inhibitor of lipid droplet formation in mouse macrophages, was elucidated to be cyclo-[(3S,4S)-3-hydroxy-4-methyloctanoyl-L-phenylalanyl-L-alanyl- D-allo-isoleucyl] by spectral analyses and chemical degradation.
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Affiliation(s)
- I Namatame
- Graduate School of Pharmaceutical Sciences, Kitasato University, and Research Center for Biological Function, The Kitasato Institute, Tokyo, Japan
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Si S, Wang T, Yang G. [Study on mechanisms of T lymphocyte function changes in mice under simulated weightlessness in terms of IL-2 and Bcl-2 gene transcription]. Space Med Med Eng (Beijing) 1998; 11:254-7. [PMID: 11543242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Abstract
To understand the mechanisms of T lymphocyte function changes under simulated weightlessness T lymphocyte proliferation (MTT assay), IL-2 production (biological assay), IL-2 gene (dot blot) and Bcl-2 oncogene (RT-PCR) transcription of splenic cell were observed in mice. The results showed that on the 7 th and 14 th day of simulated weightlessness T lymphocyte proliferation and IL-2 production decreased and significant on the 14 th day; on the 7 th and 14 th day of simulated weightlessness IL-2 and Bcl-2 gene transcription decreased, significant on the 14 day. It demonstrated that simulated weightlessness inhibits IL-2 production by decreasing IL-2 gene transcrition. IL-2 and Bcl-2 gene may be regulators of lymphocyte function under simulated weightlessness.
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Affiliation(s)
- S Si
- Institute of Space Medico-Engineering, Beijing, China
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