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Guo YK, Shang S, Sun TH, Fan YQ, Xiaokereti J, Zu KT, Yang X, Zhang L, Li YD, Lu YM, Zhang JH, Xing Q, Zhou XH, Tang BP. [Short-term efficacy and safety of cardiac contractility modulation in patients with heart failure]. Zhonghua Xin Xue Guan Bing Za Zhi 2024; 52:391-396. [PMID: 38644254 DOI: 10.3760/cma.j.cn112148-20231009-00274] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
Objective: To investigate the short-term efficacy and safety of cardiac contractility modulation (CCM) in patients with heart failure. Methods: This was a cross-sectional study of patients with heart failure who underwent CCM placement at the First Affiliated Hospital of Xinjiang Medical University from February to June 2022. With a follow-up of 3 months, CCM sensation, impedance, percent output, and work time were monitored, and patients were compared with pre-and 3-month postoperative left ventricular ejection fraction (LVEF) values, and 6-minute walk test distance and New York Heart Association (NYHA) cardiac function classification, and the occurrence of complications was recorded. Results: CCM was successfully implanted in all 9 patients. Seven(7/9) of them were male, aged (56±14) years, 3 patients had ischaemic cardiomyopathy and 6 patients had dilated cardiomyopathy. At 3-month postoperative follow-up, threshold was stable, sense was significantly lower at follow-up than before (right ventricle: (16.3±7.0) mV vs. (8.2±1.1) mV, P<0.05; local sense: (15.7±4.9) mV vs. (6.7±2.5) mV, P<0.05), and impedance was significantly lower at follow-up than before (right ventricle (846±179) Ω vs. (470±65) Ω, P<0.05, local sense: (832±246) Ω vs. (464±63) Ω, P<0.05). The CCM output percentage was (86.9±10.7) %, the output amplitude was (6.7±0.4) V, and the daily operating time was (8.6±1.0) h. LVEF was elevated compared to preoperative ((29.4±5.2) % vs. (38.3±4.3) %, P<0.05), the 6-minute walk test was significantly longer than before ((96.8±66.7)m vs. (289.3±121.7)m, P<0.05). No significant increase in the number of NYHA Class Ⅲ-Ⅳ patients was seen (7/9 vs. 2/9, P>0.05). The patient was not re-hospitalised for worsening heart failure symptoms, had no malignant arrhythmic events and experienced significant relief of symptoms such as chest tightness and shortness of breath. No postoperative complications related to pocket hematoma, pocket infection and rupture, electrode detachment, valve function impairment, pericardial effusion, or cardiac perforation were found. Conclusions: CCM has better short-term safety and efficacy in patients with heart failure.
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Affiliation(s)
- Y K Guo
- Department of Pacing and Electrophysiology, Xinjiang Key Laboratory of Cardiac Electrophysiology and Cardiac Remodelling, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - S Shang
- Department of Pacing and Electrophysiology, Xinjiang Key Laboratory of Cardiac Electrophysiology and Cardiac Remodelling, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - T H Sun
- Department of Pacing and Electrophysiology, Xinjiang Key Laboratory of Cardiac Electrophysiology and Cardiac Remodelling, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - Y Q Fan
- Department of Pacing and Electrophysiology, Xinjiang Key Laboratory of Cardiac Electrophysiology and Cardiac Remodelling, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - Jiasuoer Xiaokereti
- Department of Pacing and Electrophysiology, Xinjiang Key Laboratory of Cardiac Electrophysiology and Cardiac Remodelling, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - Kela TuErhong Zu
- Department of Pacing and Electrophysiology, Xinjiang Key Laboratory of Cardiac Electrophysiology and Cardiac Remodelling, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - X Yang
- Department of Pacing and Electrophysiology, Xinjiang Key Laboratory of Cardiac Electrophysiology and Cardiac Remodelling, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - L Zhang
- Department of Pacing and Electrophysiology, Xinjiang Key Laboratory of Cardiac Electrophysiology and Cardiac Remodelling, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - Y D Li
- Department of Pacing and Electrophysiology, Xinjiang Key Laboratory of Cardiac Electrophysiology and Cardiac Remodelling, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - Y M Lu
- Department of Pacing and Electrophysiology, Xinjiang Key Laboratory of Cardiac Electrophysiology and Cardiac Remodelling, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - J H Zhang
- Department of Pacing and Electrophysiology, Xinjiang Key Laboratory of Cardiac Electrophysiology and Cardiac Remodelling, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - Q Xing
- Department of Pacing and Electrophysiology, Xinjiang Key Laboratory of Cardiac Electrophysiology and Cardiac Remodelling, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - X H Zhou
- Department of Pacing and Electrophysiology, Xinjiang Key Laboratory of Cardiac Electrophysiology and Cardiac Remodelling, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - B P Tang
- Department of Pacing and Electrophysiology, Xinjiang Key Laboratory of Cardiac Electrophysiology and Cardiac Remodelling, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
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Xing Q, Wang X, Xu X, Lin J, Wang F, Li C, Wang B. BRT: An Efficient and Scalable Blockchain-Based Revocation Transparency System for TLS Connections. Sensors (Basel) 2023; 23:8816. [PMID: 37960516 PMCID: PMC10649209 DOI: 10.3390/s23218816] [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] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 10/25/2023] [Accepted: 10/27/2023] [Indexed: 11/15/2023]
Abstract
Log-based public key infrastructure(PKI) refers to a robust class of CA-attack-resilient PKI that enhance transparency and accountability in the certificate revocation and issuance process by compelling certificate authorities (CAs) to submit revocations to publicly and verifiably accessible logs. However, log-based PKIs suffer from a reliance on centralized and consistent sources of information, rendering them susceptible to split-world attacks, and they regrettably fail to provide adequate incentives for recording or monitoring CA behavior. Blockchain-based PKIs address these limitations by enabling decentralized log audits through automated financial incentives. However, they continue to face challenges in developing a scalable revocation mechanism suited for lightweight clients. In this paper, we introduce BRT, a scalable blockchain-based system for certificate and revocation transparency. It serves to log, audit, and validate the status of certificates within the transport layer security (TLS)/secure sockets layer(SSL) PKI domain. We designed an audit-on-chain framework, coupled with an off-chain storage/computation system, to enhance the efficiency of BRT when operating in a blockchain environment. By implementing a blockchain-based prototype, we demonstrate that BRT achieves storage-efficient log recording with a peak compression rate reaching 8%, cost-effective log updates for large-scale certificates, and near-instantaneous revocation checks for users.
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Affiliation(s)
- Qianqian Xing
- College of Computer, National University of Defense Technology, Changsha 410073, China; (Q.X.); (C.L.); (B.W.)
| | - Xiaofeng Wang
- College of Computer, National University of Defense Technology, Changsha 410073, China; (Q.X.); (C.L.); (B.W.)
| | - Xinyue Xu
- College of Computer, National University of Defense Technology, Changsha 410073, China; (Q.X.); (C.L.); (B.W.)
| | - Jiaqi Lin
- Institute of System Engineering AMS PLA, Beijing 100039, China
| | - Fei Wang
- College of Computer, National University of Defense Technology, Changsha 410073, China; (Q.X.); (C.L.); (B.W.)
| | - Cui Li
- College of Computer, National University of Defense Technology, Changsha 410073, China; (Q.X.); (C.L.); (B.W.)
| | - Baosheng Wang
- College of Computer, National University of Defense Technology, Changsha 410073, China; (Q.X.); (C.L.); (B.W.)
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Xiao C, Qin M, Xia H, Xing Q, Wang D, Qian W. Effects of PC6 acupressure on acute and delayed nausea and vomiting induced by chemotherapy in patients with malignant neoplasm: a meta-analysis. Support Care Cancer 2023; 31:510. [PMID: 37548707 DOI: 10.1007/s00520-023-07976-0] [Citation(s) in RCA: 1] [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: 07/08/2022] [Accepted: 07/27/2023] [Indexed: 08/08/2023]
Abstract
OBJECTIVE Evaluating the intervention effect of PC6 acupressure on chemotherapy-induced acute, delayed nausea, and vomiting in malignant tumor patients. METHOD Eleven databases had been retrieved from January 2010 through January 2022. The published meta-analysis literature was hand-searched, and the language was limited to English and Chinese. The protocol of this meta-analysis was registered with PROSPERO (registration number: CRD42022323693). Two reviewers independently selected relevant eligible articles, extracted data, and evaluated the risk of bias. Meta-analysis was statistically analyzed using software RevMan 5.3. RESULT Ten randomized controlled trials with 975 patients were included. Only two studies were assessed as high quality; eight studies were evaluated as moderate. Meta-analysis showed that compared with the control group, PC6 acupressure reduced the occurrence number of acute (SMD = -0.39,95CI (-0.73, -0.05) P = 0.02), delayed (SMD = -0.51, 95% CI (-0.96, -0.05) P = 0.03) nausea and acute (SMD = -0.42,95% CI (-0.79, -0.06) P = 0.02), delayed (SMD = -0.37, 95% CI (-0.77, 0.03) P = 0.07) vomiting; it reduced the severity of acute (SMD = -0.34, 95% CI (-0.57, -0.11) P = 0.004), delayed (SMD = -0.79, 95% CI (-1.33, -0.25) P = 0.004) nausea and acute (SMD = -0.51, 95% CI (-0.79, -0.23) P = 0.0004), delayed (SMD = -0.50, 95% CI (-0.84, -0.17) P = 0.003) vomiting, while it did not reduced the experience time on acute and delayed CINV. CONCLUSION The meta-analysis shows the effectiveness of PC6 acupressure in preventing and treating nausea and vomiting. Large, high-quality, well-designed randomized controlled trials are needed in the future to determine the efficacy of PC6 acupressure on chemotherapy-induced nausea and vomiting.
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Affiliation(s)
| | - Ming Qin
- Xuzhou Medical University, Xuzhou, JiangSu, China
| | - Huiling Xia
- Xuzhou Medical University, Xuzhou, JiangSu, China
| | - Qianqian Xing
- Affiliated Hospital of Xuzhou Medical University, Xuzhou, JiangSu, China
| | - Dan Wang
- Affiliated Hospital of Xuzhou Medical University, Xuzhou, JiangSu, China
| | - Weiwei Qian
- Affiliated Hospital of Xuzhou Medical University, Xuzhou, JiangSu, China.
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Xing Q, Zhao X, Xie L, Chen X, Wang Y, Xie Y. Advances in non-pharmacological management of Parkinson's disease complicated with blood pressure abnormalities. J Physiol Pharmacol 2023; 74. [PMID: 37865954 DOI: 10.26402/jpp.2023.4.01] [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] [Received: 07/07/2023] [Accepted: 08/31/2023] [Indexed: 10/24/2023]
Abstract
Parkinson's disease (PD) often presents with autonomic dysregulation, leading to blood pressure irregularities such as neurogenic orthostatic hypotension (nOH), neurogenic supine hypertension (nSH), and postprandial hypotension (PPH). Unfortunately, these conditions remain prevalent and receive insufficient attention in scientific discourse. They not only cause complications like syncope, falls, and fractures but also result in long-term damage to vital organs, diminishing patients' quality of life. Early implementation of appropriate non-pharmacologic management is crucial to prevent severe adverse events later on. This review focuses on the types, clinical characteristics, mechanisms, and common non-pharmacologic management measures for PD complicated by abnormal blood pressure. By promoting early diagnosis, recognizing symptoms of abnormal blood pressure, and employing non-pharmacologic interventions such as health education, dietary adjustments, exercise, and Chinese medicine techniques, we aim to improve patients' symptoms and quality of life while providing practical guidance for managing PD-related blood pressure abnormalities.
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Affiliation(s)
- Q Xing
- Department of Pain, Affiliated Hospital of North Sichuan Medical College, Nanchong, China
| | - X Zhao
- Department of Rehabilitation Medicine, The Second Clinical Medical School of North Sichuan Medical College, Nanchong Central Hospital, Nanchong, China
| | - L Xie
- School of Rehabilitation, Zigong Vocational and Technical College, Zigong, China
| | - X Chen
- Department of Rehabilitation Medicine, Affiliated Hospital of North Sichuan Medical College, Nanchong, China
| | - Y Wang
- Department of Rehabilitation Medicine, Affiliated Hospital of North Sichuan Medical College, Nanchong, China.
| | - Y Xie
- Department of Rehabilitation Medicine, Affiliated Hospital of North Sichuan Medical College, Nanchong, China.
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Yu YP, Feng YW, Zhang XX, Wei M, Tuerhong Z, Lu YM, Xing Q, Zhang JH, Li YD, Tang BP, Zhou XH. [Analysis of factors related to systemic embolism in patients≥75 years old with non-valvular atrial fibrillation]. Zhonghua Nei Ke Za Zhi 2023; 62:156-162. [PMID: 36746529 DOI: 10.3760/cma.j.cn112138-20220130-00087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Objective: To explore the related risk factors for systemic embolism (SE) in patients aged≥75 years with non-valvular atrial fibrillation (NVAF). Methods: A case-control study. NVAF patients aged≥75 years who were hospitalized at the First Affiliated Hospital of Xinjiang Medical University from October 2018 to October 2020 were divided into no SE (n=1 127) and SE (n=433) groups according to the occurrence of SE after NVAF. Multivariate logistic regression was used to analyze SE-related factors in patients with NVAF without anticoagulation treatment. Results: In the multivariate model, the following factors were associated with an increased risk of SE in patients with NVAF: history of AF≥5 years [odds ratio (OR)=2.75, 95% confidence interval (CI) 1.98-3.82, P<0.01], lipoprotein(a)>300 g/L (OR=2.07, 95%CI 1.50-2.84, P<0.01), apolipoprotein (Apo)B>1.2 g/L (OR=1.91, 95%CI 1.25-2.93, P=0.003), left ventricular ejection fraction (LVEF) of 30%-49% (OR=2.45, 95%CI 1.63-3.69, P<0.01), left atrial diameter>40 mm (OR=1.54, 95%CI 1.16-2.07, P=0.003), and CHA2DS2-VASc score≥3 (OR=15.14, 95%CI 2.05-112.13, P=0.01). ApoAI>1.6 g/L was negatively correlated with the occurrence of SE (OR=0.28, 95%CI 0.15-0.51, P<0.01). Conclusions: History of AF≥5 years, lipoprotein(a)>300 g/L, elevated ApoB, left atrial diameter>40 mm, LVEF of 30%-49%, and CHA2DS2-VASC score≥3 are independent risk factors for SE whereas ApoAI>1.6 g/L is a protective factor against SE in patients with NVAF.
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Affiliation(s)
- Y P Yu
- Department of Cardiac Pacing and Electrophysiology, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - Y W Feng
- Department of Cardiac Pacing and Electrophysiology, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - X X Zhang
- Department of Cardiac Pacing and Electrophysiology, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - M Wei
- Department of Cardiac Pacing and Electrophysiology, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - Zukela Tuerhong
- Department of Cardiac Pacing and Electrophysiology, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - Y M Lu
- Department of Cardiac Pacing and Electrophysiology, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - Q Xing
- Department of Cardiac Pacing and Electrophysiology, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - J H Zhang
- Department of Cardiac Pacing and Electrophysiology, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - Y D Li
- Department of Cardiac Pacing and Electrophysiology, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - B P Tang
- Department of Cardiac Pacing and Electrophysiology, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
| | - X H Zhou
- Department of Cardiac Pacing and Electrophysiology, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China Xinjiang Key Laboratory of Cardiac Electrophysiology and Remodeling, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
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Xing Q, Zhao J, Zhu Y, Hou X, Wang Y. Triphosgene: an efficient chlorination reagent for synthesis of 5-chloro-2-pentanone from 3-acetyl-1-propanol. Res Chem Intermed 2022. [DOI: 10.1007/s11164-022-04886-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Xu Y, Guo X, Li J, Huo X, Sun H, Zhang G, Xing Q, Liu M, Ma T, Ding Q. Impedance Iterative Learning Backstepping Control for Output-Constrained Multisection Continuum Arms Based on PMA. Micromachines (Basel) 2022; 13:1532. [PMID: 36144154 PMCID: PMC9506357 DOI: 10.3390/mi13091532] [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: 08/13/2022] [Revised: 09/08/2022] [Accepted: 09/13/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Pneumatic muscle actuator (PMA) actuated multisection continuum arms are widely applied in various fields with high flexibility and bionic properties. Nonetheless, their kinematic modeling and control strategy proves to be extremely challenging tasks. METHODS The relationship expression between the deformation parameters and the length of PMA with the geometric method is obtained under the assumption of piecewise constant curvature. Then, the kinematic model is established based on the improved D-H method. Considering the limitation of PMA telescopic length, an impedance iterative learning backstepping control strategy is investigated. For one thing, the impedance control is utilized to ensure that the ideal static balance force is maintained constant in the Cartesian space. For another, the iterative learning backstepping control is applied to guarantee that the desired trajectory of each PMA can be accurately tracked with the output-constrained requirement. Moreover, iterative learning control (ILC) is implemented to dynamically estimate the unknown model parameters and the precondition of zero initial error in ILC is released by the trajectory reconstruction. To further ensure the constraint requirement of the PMA tracking error, a log-type barrier Lyapunov function is employed in the backstepping control, whose convergence is demonstrated by the composite energy function. RESULTS The tracking error of PMA converges to 0.004 m and does not exceed the time-varying constraint function through cosimulation. CONCLUSION From the cosimulation results, the superiority and validity of the proposed theory are verified.
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Affiliation(s)
- Yuexuan Xu
- School of Artificial Intelligence and Data Science, Hebei University of Technology, Tianjin 300400, China
- Engineering Research Center of Intelligent Rehabilitation Device and Detection Technology, Ministry of Education, School of Artificial Intelligence and Data Science, Hebei University of Technology, Tianjin 300400, China
| | - Xin Guo
- School of Artificial Intelligence and Data Science, Hebei University of Technology, Tianjin 300400, China
- Engineering Research Center of Intelligent Rehabilitation Device and Detection Technology, Ministry of Education, School of Artificial Intelligence and Data Science, Hebei University of Technology, Tianjin 300400, China
| | - Jian Li
- School of Automation, Beijing University of Posts and Telecommunications, Beijing 100876, China
- Beijing Key Laboratory of Rehabilitation Technical Aids for Old-Age Disability and Key Laboratory of Neuro-Functional Information and Rehabilitation Engineering of the Ministry of Civil Affairs, National Research Center for Rehabilitation Technical Aids, Beijing 100176, China
| | - Xingyu Huo
- Department of Cardiology (Ward 1), Tianjin Chest Hospital, Tianjin 300202, China
| | - Hao Sun
- School of Artificial Intelligence and Data Science, Hebei University of Technology, Tianjin 300400, China
- Engineering Research Center of Intelligent Rehabilitation Device and Detection Technology, Ministry of Education, School of Artificial Intelligence and Data Science, Hebei University of Technology, Tianjin 300400, China
| | - Gaowei Zhang
- School of Electronic Information and Automation, Civil Aviation University of China, Tianjin 300300, China
| | - Qianqian Xing
- School of Artificial Intelligence and Data Science, Hebei University of Technology, Tianjin 300400, China
| | - Minghe Liu
- School of Artificial Intelligence and Data Science, Hebei University of Technology, Tianjin 300400, China
- Engineering Research Center of Intelligent Rehabilitation Device and Detection Technology, Ministry of Education, School of Artificial Intelligence and Data Science, Hebei University of Technology, Tianjin 300400, China
| | - Tianyi Ma
- School of Artificial Intelligence and Data Science, Hebei University of Technology, Tianjin 300400, China
- Engineering Research Center of Intelligent Rehabilitation Device and Detection Technology, Ministry of Education, School of Artificial Intelligence and Data Science, Hebei University of Technology, Tianjin 300400, China
| | - Qingsong Ding
- School of Artificial Intelligence and Data Science, Hebei University of Technology, Tianjin 300400, China
- Engineering Research Center of Intelligent Rehabilitation Device and Detection Technology, Ministry of Education, School of Artificial Intelligence and Data Science, Hebei University of Technology, Tianjin 300400, China
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Zhao J, Liu R, Zhang Z, Xing Q, Chang H, Hou X, Wang Y. Tautomer distributions of N-acetyl-D-glucosamine in the condition of commonly utilized solvents and catalysts for biorefinery: NMR study. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131995] [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: 10/19/2022]
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Feng TF, Yao DM, Zheng R, Jiang DS, Zhang LL, Xing Q, Li L. [Effect of RBP2 gene silencing on proliferation, migration and invasion of ovarian epithelial cancer SKOV3/DDP cells and its mechanism]. Zhonghua Zhong Liu Za Zhi 2022; 44:139-146. [PMID: 35184457 DOI: 10.3760/cma.j.cn112152-20200612-00555] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To explore the effect of down-regulation of retinol binding protein 2 (RBP2) expression on the biological characteristics of ovarian cancer cells and its mechanism. Methods: Knockdown of RBP2 and cisplatin (DDP)-resistant ovarian cancer cell line SKOV3/DDP-RBP2i was established, the negative control group and blank control group were also set. Cell counting kit 8 (CCK-8) was used to detect the cell proliferation ability, flow cytometry was used to detect cell apoptosis, scratch test and Transwell invasion test were used to detect cell migration and invasion ability, real-time fluorescent quantitative polymerase chain reaction (RT-qPCR) and western blot were used to detect the expressions of molecular markers related to epithelial-mesenchymal transition (EMT). The effect of RBP2 on the growth of ovarian cancer was verified through experiment of transplanted tumors in nude mice, and the relationships between RBP2 expression and tumor metastasis and patient prognosis were analyzed using the clinical data of ovarian cancer in TCGA database. Results: After down-regulating the expression of RBP2, the proliferation ability of SKOV3/DDP cell was significantly reduced. On the fifth day, the proliferation activities of SKOV3/DDP-RBP2i group, negative control group and blank control group were (56.67±4.16)%, (84.67±3.51) and (87.00±4.00)% respectively, with statistically significant difference (P<0.001). The apoptosis rate of SKOV3/DDP-RBP2i group was (14.19±1.50)%, higher than (8.77±0.75)% of the negative control group and (7.48±0.52)% of the blank control group (P<0.001). The number of invasive cells of SKOV3/DDP-RBP2i group was (55.20±2.39), lower than (82.60±5.18) and (80.80±7.26) of the negative control group and the blank control group, respectively (P<0.001). The scratch healing rate of SKOV3/DDP-RBP2i group was (28.47±2.72)%, lower than (50.58±4.06)% and (48.92±4.63)% of the negative control group and the blank control group, respectively (P<0.001). The mRNA and protein expressions of E-cadherin in the SKOV3/DDP-RBP2i group were higher than those in the negative control group (P=0.015, P<0.001) and the blank control group (P=0.006, P<0.001). The mRNA and protein expression of N-cadherin in SKOV3/DDP-RBP2i group were lower than those in the negative control group (P=0.012, P<0.001) and the blank control group (P=0.005, P<0.001). The mRNA and protein expressions of vimentin in SKOV3/DDP-RBP2i group were also lower than those in the negative control group (P=0.016, P=0.001) and the blank control group (P=0.011, P=0.001). Five weeks after the cells inoculated into the nude mice, the tumor volume of SKOV3/DDP-RBP2i group, negative control group and blank control group were statistically significant different. The tumor volume of SKOV3/DDP-RBP2i group was smaller than those of negative control group and blank control group (P=0.001). Bioinformatics analysis showed that the expression of RBP2 in patients with metastatic ovarian cancer was higher than that without metastasis (P=0.043), and the median overall survival of ovarian cancer patients with high RBP2 expression was 41 months, shorter than 69 months of low RBP2 expression patients (P<0.001). Conclusion: Downregulation of the expression of RBP2 in SKOV3/DDP cells can inhibit cell migration and invasion, and the mechanism may be related to the inhibition of EMT.
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Affiliation(s)
- T F Feng
- Department of Gynecology, Maternal and Child Health Hospital of Hubei Province, Wuhan 430070, China
| | - D M Yao
- Department of Gynecology, Maternal and Child Health Hospital of Hubei Province, Wuhan 430070, China
| | - R Zheng
- Department of Gynecology, Maternal and Child Health Hospital of Hubei Province, Wuhan 430070, China
| | - D S Jiang
- Department of Traditional Chinese Medicine, Maternal and Child Health Hospital of Hubei Province, Wuhan 430070, China
| | - L L Zhang
- Department of Gynecology, Maternal and Child Health Hospital of Hubei Province, Wuhan 430070, China
| | - Q Xing
- Department of Gynecology, Maternal and Child Health Hospital of Hubei Province, Wuhan 430070, China
| | - L Li
- Key Laboratory of High-incidence Tumor Prevention and Treatment, Ministry of Education, Guangxi Medical University, Nanning 530021, China
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Jiang M, Yang F, Zhang L, Xu D, Jia Y, Cheng Y, Han S, Wang T, Chen Z, Su Y, Zhu Z, Chen S, Zhang J, Wang L, Yang L, Yang J, Luo X, Xing Q. Unique motif shared by HLA-B*59:01 and HLA-B*55:02 is associated with methazolamide-induced Stevens-Johnson syndrome and toxic epidermal necrolysis in Han Chinese. J Eur Acad Dermatol Venereol 2022; 36:873-880. [PMID: 35122707 DOI: 10.1111/jdv.17980] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 08/28/2021] [Accepted: 01/18/2022] [Indexed: 11/30/2022]
Abstract
BACKGROUND Methazolamide (MTZ) has been occasionally linked to the lethal Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN), which are associated with HLA-B*59:01. However, some MTZ-induced SJS/TEN (MTZ-SJS/TEN) cases are negative for HLA-B*59:01, implying that other genetic factors besides HLA-B*59:01 are contributing to MTZ-SJS/TEN. OBJECTIVES To comprehensively identify HLA and non-HLA genetic susceptibility to MTZ-SJS/TEN in Han Chinese. METHODS Eighteen patients with MTZ-SJS/TEN, 806 subjects of the population control and 74 MTZ-tolerant individuals were enrolled in this study. Both exome-wide and HLA-based association studies were conducted. Molecular docking analysis was employed to simulate the interactions between MTZ and risk HLA proteins. RESULTS We found a strong signal in the major histocompatibility complex region on chromosome 6 with 22 SNPs reaching exome-wide significance. Compared with MTZ-tolerant controls, a significant association of HLA-B*59:01 with MTZ-SJS/TEN was validated (odds ratio [OR] = 146.00, 95% confidence interval [CI]: 16.12-1321.98; P = 6.19 × 10-10 ). Moreover, 66.7% of MTZ-SJS/TEN patients negative for HLA-B*59:01 were carriers of HLA-B*55:02, while 2.7% of the tolerant individuals were observed with HLA-B*55:02 (OR = 71.00, 95% CI: 7.84-643.10; P = 1.43 × 10-4 ). Within HLA-B protein, the E45-L116 motif could completely explain the association of HLA-B*59:01 and HLA-B*55:02 with MTZ-SJS/TEN (OR = 119.33, 95% CI: 29.19-1227.96; P = 4.36 × 10-13 ). Molecular docking analysis indicated that MTZ binds more stably to the pocket of HLA-B*59:01 and HLA-B*55:02 than to that of non-risk alleles of HLA-B*40:01 and HLA-C*01:02. CONCLUSIONS This study confirmed the association of HLA-B*59:01 with MTZ-SJS/TEN and identified HLA-B*55:02 as a novel risk allele in Han Chinese with the largest sample size to date. Notably, the rs41562914(A)-rs12697944(A) haplotype, encoding E45-L116, is capable of serving as a powerful genetic predictor for MTZ-SJS/TEN with a sensitivity of 89% and specificity of 96%.
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Affiliation(s)
- M Jiang
- Children's Hospital & Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - F Yang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - L Zhang
- Department of Pharmacology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - D Xu
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Y Jia
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - Y Cheng
- Children's Hospital & Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - S Han
- Department of Pharmacology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - T Wang
- Children's Hospital & Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - Z Chen
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Y Su
- Children's Hospital & Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - Z Zhu
- Children's Hospital & Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - S Chen
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - J Zhang
- Children's Hospital & Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
| | - L Wang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - L Yang
- Department of Pharmacology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, China
| | - J Yang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - X Luo
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Q Xing
- Children's Hospital & Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, China
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Wu Y, Tian S, Li C, Zhang W, Xing Q, Chen G. Predictive Value of Contrast-Enhanced Ultrasound in Chemical Lumbar Sympathectomy for End-Stage Arteriosclerosis Obliterans of the Lower Extremities. Pain Ther 2022; 11:209-223. [PMID: 35034342 PMCID: PMC8861241 DOI: 10.1007/s40122-021-00347-9] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 12/10/2021] [Indexed: 11/30/2022] Open
Abstract
Introduction The therapeutic effect of chemical lumbar sympathectomy (CLS) on ischemic diseases of the lower limbs varies greatly among individuals. The time to peak (TTP) response in contrast-enhanced ultrasound (CEUS) can reflect the perfusion disorder of the calf skeletal muscle and the collateral circulation. In this study we evaluated the predictive value of CEUS in patients treated with CLS for end-stage atherosclerotic occlusive disease of the lower extremity (ASO-LE). Methods This was a prospective study that included patients with end-stage ASO-LE and moderate to severe pain who had undergone a CEUS examination and CLS procedure and who were observed for 12 months after surgery. The patients’ characteristics and prognostic factors, including lower limb pain score, skin temperature, walking distance, and ulcer and gangrene healing, were recorded. Results Fifty-eight patients with a mean age of 66.24 (range 58–78) years were included in the study, of whom 42 (71.41%) were men. Following the CLS procedure, the numerical rating scale (NRS)-measured pain decreased significantly, and the skin temperature of the affected limb increased significantly (P < 0.05). The satisfaction rate of lower limb pain relief 1 year after operation was 53.45%. Correlation analysis showed that preoperative TTP response was correlated with the NRS score and skin temperature of the affected limb at 6 months and 12 months post surgery (P < 0.05). The binary logistic regression analysis indicated that a longer preoperative TTP response was associated with a higher risk of poor pain relief after CLS (odds ratio 1.126, 95% confidence interval 1.058–1.205). The receiver operating characteristic curve showed that preoperative TTP response had a certain predictive value on CLS treatment effect, with a sensitivity and specificity of 81.5% and 83.9%, respectively. When the preoperative TTP response was > 77.5, the risk of poor response after CLS increased. Conclusions Preoperative TTP response was able to predict the therapeutic effect of CLS to a certain extent, and thus may aid physicians in determining the choice of CLS treatment for patients with ASO-LE. Trial Registration Chinese Clinical Trial Registry: ChicTR1900028424 (principal investigator: Yue Wu; date of registration: 21 December 2019). Supplementary Information The online version contains supplementary material available at 10.1007/s40122-021-00347-9.
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Affiliation(s)
- Yue Wu
- Department of Anesthesiology, Sir Run Run Shaw Hospital affiliated with School of Medicine of Zhejang University, 3 Qingchun Road East, Shangcheng District, Hangzhou, 310016, Zhejiang, People's Republic of China
| | - Suming Tian
- Department of Anesthesiology, Sir Run Run Shaw Hospital affiliated with School of Medicine of Zhejang University, 3 Qingchun Road East, Shangcheng District, Hangzhou, 310016, Zhejiang, People's Republic of China
| | - Chunye Li
- Department of Pain, Affiliated Hospital of Jiangsu University, Zhenjiang, 212001, Jiangsu, People's Republic of China
| | - Weibo Zhang
- Department of Anesthesiology, Sir Run Run Shaw Hospital affiliated with School of Medicine of Zhejang University, 3 Qingchun Road East, Shangcheng District, Hangzhou, 310016, Zhejiang, People's Republic of China
| | - Qianqian Xing
- Department of Anesthesiology, Sir Run Run Shaw Hospital affiliated with School of Medicine of Zhejang University, 3 Qingchun Road East, Shangcheng District, Hangzhou, 310016, Zhejiang, People's Republic of China
| | - Gang Chen
- Department of Anesthesiology, Sir Run Run Shaw Hospital affiliated with School of Medicine of Zhejang University, 3 Qingchun Road East, Shangcheng District, Hangzhou, 310016, Zhejiang, People's Republic of China.
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12
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Gao Q, Yi S, Li Y, Luo J, Xing Q, Yang X, Zhao M, Min M, Wang Q, Wang Y, Ma L, Peng S. The Role of Flagellin B in Vibrio anguillarum-Induced Intestinal Immunity and Functional Domain Identification. Front Immunol 2021; 12:774233. [PMID: 34912344 PMCID: PMC8667730 DOI: 10.3389/fimmu.2021.774233] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 09/11/2021] [Accepted: 11/11/2021] [Indexed: 11/13/2022] Open
Abstract
Vibrio anguillarum, an opportunistic pathogen of aquatic animals, moves using a filament comprised of polymerised flagellin proteins. Flagellins are essential virulence factors for V. anguillarum infection. Herein, we investigated the effects of flagellins (flaA, flaB, flaC, flaD and flaE) on cell apoptosis, TLR5 expression, and production of IL-8 and TNF-α. FlaB exhibited the strongest immunostimulation effects. To explore the functions of flaB in infection, we constructed a flaB deletion mutant using a two-step recombination method, and in vitro experiments showed a significant decrease in the expression of TLR5 and inflammatory cytokines compared with wild-type cells. However in the in vivo study, expression of inflammatory cytokines and intestinal mucosal structure showed no significant differences between groups. Additionally, flaB induced a significant increase in TLR5 expression based on microscopy analysis of fluorescently labelled TLR5, indicating interactions between the two proteins, which was confirmed by native PAGE and yeast two-hybrid assay. Molecular simulation of interactions between flaB and TLR5 was performed to identify the residues involved in binding, revealing two binding sites. Then, based on molecular dynamics simulations, we carried out thirteen site-directed mutations occurring at the amino acid sites of Q57, N83, N87, R91, D94, E122, D152, N312, R313, N320, L97, H316, I324 in binding regions of flaB protein by TLR5, respectively. Surface plasmon resonance (SPR) was employed to compare the affinities of flaB mutants for TLR5, and D152, D94, I324, N87, R313, N320 and H316 were found to mediate interactions between flaB and TLR5. Our comprehensive and systematic analysis of V. anguillarum flagellins establishes the groundwork for future design of flagellin-based vaccines.
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Affiliation(s)
- Quanxin Gao
- Zhejiang Provincial Key Laboratory of Aquatic Resources, Conservation and Development, Key Laboratory of Aquatic Animal Genetic Breeding and Nutrition, Chinese Academy of Fishery Sciences, College of Life Science, Huzhou University, Huzhou, China
| | - Shaokui Yi
- Zhejiang Provincial Key Laboratory of Aquatic Resources, Conservation and Development, Key Laboratory of Aquatic Animal Genetic Breeding and Nutrition, Chinese Academy of Fishery Sciences, College of Life Science, Huzhou University, Huzhou, China
| | - Yang Li
- Zhejiang Provincial Key Laboratory of Aquatic Resources, Conservation and Development, Key Laboratory of Aquatic Animal Genetic Breeding and Nutrition, Chinese Academy of Fishery Sciences, College of Life Science, Huzhou University, Huzhou, China
| | - Jinping Luo
- Zhejiang Provincial Key Laboratory of Aquatic Resources, Conservation and Development, Key Laboratory of Aquatic Animal Genetic Breeding and Nutrition, Chinese Academy of Fishery Sciences, College of Life Science, Huzhou University, Huzhou, China
| | - Qianqian Xing
- Zhejiang Provincial Key Laboratory of Aquatic Resources, Conservation and Development, Key Laboratory of Aquatic Animal Genetic Breeding and Nutrition, Chinese Academy of Fishery Sciences, College of Life Science, Huzhou University, Huzhou, China
| | - Xia Yang
- Zhejiang Provincial Key Laboratory of Aquatic Resources, Conservation and Development, Key Laboratory of Aquatic Animal Genetic Breeding and Nutrition, Chinese Academy of Fishery Sciences, College of Life Science, Huzhou University, Huzhou, China
| | - Ming Zhao
- Key Laboratory of Marine and Estuarine Fisheries, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
| | - Minghua Min
- Key Laboratory of Marine and Estuarine Fisheries, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
| | - Qian Wang
- Key Laboratory of Marine and Estuarine Fisheries, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
| | - Yabing Wang
- Key Laboratory of Marine and Estuarine Fisheries, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
| | - Lingbo Ma
- Key Laboratory of Marine and Estuarine Fisheries, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
| | - Shiming Peng
- Key Laboratory of Marine and Estuarine Fisheries, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai, China
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Xing Q, Fu X, Liu Z, Cao Q, You C. Contents and evolution of potential furfural compounds in milk-based formula, ultra-high temperature milk and pasteurised yoghurt. Int Dairy J 2021. [DOI: 10.1016/j.idairyj.2021.105086] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Gao Q, Tang Q, Xia Z, Yi S, Cai M, Du H, Yang J, Li J, Xing Q, Luo J, Yang G. Molecular identification and functional analysis of MyD88 in giant freshwater prawn (Macrobrachium rosenbergii) and expression changes in response to bacterial challenge. Int J Biol Macromol 2021; 178:492-503. [PMID: 33647335 DOI: 10.1016/j.ijbiomac.2021.02.177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 12/25/2020] [Accepted: 02/23/2021] [Indexed: 02/08/2023]
Abstract
Myeloid differentiation factor 88 (MyD88) is a crucial adaptor protein for Toll-like receptor (TLR)-mediated signaling pathways and plays an important role in immune response. In this study, the full-length cDNA of MyD88 from Macrobrachium rosenbergii (MRMyD88) was cloned. The MRMyD88 cDNA is 1758 bp long and contains a 1398-bp open reading frame. Multiple sequence alignment and phylogenetic analysis revealed that the amino acid sequence of MRMyD88 shared high identity with the known MyD88 proteins. The MRMyD88 mRNA was widely expressed in all examined tissues, with highest level in intestine, followed by gonad and pleopod. Furthermore, the MRMyD88 promoter region, spanning 1622 bp, contains several transcription factor-binding sites, including nine GATA-1 box motifs. Electrophoretic mobility shift assay showed that Gfi-1, SRF, and Oct-1 bind to the upstream region of MRMyD88. Additionally, the results showed that the expression levels of TLR1, TLR2 and TLR3 were different in response to Vibrio anguillarum, Lactobacillus plantarum and Aeromonas hydrophila infections. However, these bacteria significantly increased the expression levels of MyD88 and prophenoloxidase. These data suggest that the TLR-mediated signaling pathway is MyD88-dependent in response to pathogenic and probiotic bacteria in M. rosenbergii.
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Affiliation(s)
- Quanxin Gao
- Zhejiang Provincial Key Laboratory of Aquatic Resources Conservation and Development; Key Laboratory of Aquatic Animal Genetic Breeding and Nutrition, Chinese Academy of Fishery Sciences; Huzhou Cent Hosp, Huzhou University; College of Life Science, Huzhou University, Huzhou 313000, PR China
| | - Qiongying Tang
- Zhejiang Provincial Key Laboratory of Aquatic Resources Conservation and Development; Key Laboratory of Aquatic Animal Genetic Breeding and Nutrition, Chinese Academy of Fishery Sciences; Huzhou Cent Hosp, Huzhou University; College of Life Science, Huzhou University, Huzhou 313000, PR China
| | - Zhenglong Xia
- Jiangsu Shufeng Prawn Breeding Co., LTD., Gaoyou 225654, PR China
| | - Shaokui Yi
- Zhejiang Provincial Key Laboratory of Aquatic Resources Conservation and Development; Key Laboratory of Aquatic Animal Genetic Breeding and Nutrition, Chinese Academy of Fishery Sciences; Huzhou Cent Hosp, Huzhou University; College of Life Science, Huzhou University, Huzhou 313000, PR China
| | - Miuying Cai
- Jiangsu Shufeng Prawn Breeding Co., LTD., Gaoyou 225654, PR China
| | - Houkuan Du
- Jiangsu Shufeng Prawn Breeding Co., LTD., Gaoyou 225654, PR China
| | - Jie Yang
- Jiangsu Shufeng Prawn Breeding Co., LTD., Gaoyou 225654, PR China
| | - Jingfen Li
- Zhejiang Provincial Key Laboratory of Aquatic Resources Conservation and Development; Key Laboratory of Aquatic Animal Genetic Breeding and Nutrition, Chinese Academy of Fishery Sciences; Huzhou Cent Hosp, Huzhou University; College of Life Science, Huzhou University, Huzhou 313000, PR China
| | - Qianqian Xing
- Zhejiang Provincial Key Laboratory of Aquatic Resources Conservation and Development; Key Laboratory of Aquatic Animal Genetic Breeding and Nutrition, Chinese Academy of Fishery Sciences; Huzhou Cent Hosp, Huzhou University; College of Life Science, Huzhou University, Huzhou 313000, PR China
| | - Jinping Luo
- Zhejiang Provincial Key Laboratory of Aquatic Resources Conservation and Development; Key Laboratory of Aquatic Animal Genetic Breeding and Nutrition, Chinese Academy of Fishery Sciences; Huzhou Cent Hosp, Huzhou University; College of Life Science, Huzhou University, Huzhou 313000, PR China
| | - Guoliang Yang
- Zhejiang Provincial Key Laboratory of Aquatic Resources Conservation and Development; Key Laboratory of Aquatic Animal Genetic Breeding and Nutrition, Chinese Academy of Fishery Sciences; Huzhou Cent Hosp, Huzhou University; College of Life Science, Huzhou University, Huzhou 313000, PR China; Jiangsu Shufeng Prawn Breeding Co., LTD., Gaoyou 225654, PR China.
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Gao Q, Yi S, Luo J, Xing Q, Lv J, Wang P, Wang C, Li Y. Construction of a Vibrio anguillarum flagellin B mutant and analysis of its immuno-stimulation effects on Macrobrachium rosenbergii. Int J Biol Macromol 2021; 174:457-465. [PMID: 33493561 DOI: 10.1016/j.ijbiomac.2021.01.146] [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] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Revised: 01/20/2021] [Accepted: 01/20/2021] [Indexed: 01/16/2023]
Abstract
Vibrio anguillarum is a globally distributed aquatic pathogen, and its flagellin B (FlaB) protein can evoke innate immune responses in hosts. In order to explore the role of FlaB in V. anguillarum infection, we constructed a FlaB-deficient mutant using overlapping PCR and two-step homologous recombination, and gene sequencing confirmed successful knockout of the FlaB gene. Scanning electron microscopy showed no significant differences in the morphological structure of the flagellum between wild-type and FlaB-deficient strains. The mutant was subsequently injected into the freshwater prawn (Macrobrachium rosenbergii) to explore its pathogenicity in the host, and expression of myeloid differentiation factor 88, prophenoloxidase, catalase, superoxide dismutase and glutathione peroxidase was investigated by real-time PCR. The results showed that deletion of FlaB had little effect on V. anguillarum-induced expression of these immune-related genes (p > 0.05). In general, the FlaB mutant displayed similar flagella morphology and immune characteristics to the wild-type strain, hence we speculated that knockout of FlaB might promote the expression and function of other flagellin proteins. Furthermore, this study provides a rapid and simple method for obtaining stable mutants of V. anguillarum free from foreign plasmid DNA.
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Affiliation(s)
- Quanxin Gao
- Zhejiang Provincial Key Laboratory of Aquatic Resources Conservation and Development, Key Laboratory of Aquatic Animal Genetic Breeding and Nutrition, Chinese Academy of Fishery Sciences, Huzhou Cent Hosp, Huzhou University, College of Life Science, Huzhou University, Huzhou 313000, PR China
| | - Shaokui Yi
- Zhejiang Provincial Key Laboratory of Aquatic Resources Conservation and Development, Key Laboratory of Aquatic Animal Genetic Breeding and Nutrition, Chinese Academy of Fishery Sciences, Huzhou Cent Hosp, Huzhou University, College of Life Science, Huzhou University, Huzhou 313000, PR China
| | - Jinping Luo
- Zhejiang Provincial Key Laboratory of Aquatic Resources Conservation and Development, Key Laboratory of Aquatic Animal Genetic Breeding and Nutrition, Chinese Academy of Fishery Sciences, Huzhou Cent Hosp, Huzhou University, College of Life Science, Huzhou University, Huzhou 313000, PR China
| | - Qianqian Xing
- Zhejiang Provincial Key Laboratory of Aquatic Resources Conservation and Development, Key Laboratory of Aquatic Animal Genetic Breeding and Nutrition, Chinese Academy of Fishery Sciences, Huzhou Cent Hosp, Huzhou University, College of Life Science, Huzhou University, Huzhou 313000, PR China
| | - Jiali Lv
- Zhejiang Provincial Key Laboratory of Aquatic Resources Conservation and Development, Key Laboratory of Aquatic Animal Genetic Breeding and Nutrition, Chinese Academy of Fishery Sciences, Huzhou Cent Hosp, Huzhou University, College of Life Science, Huzhou University, Huzhou 313000, PR China
| | - Panhuang Wang
- Zhejiang Provincial Key Laboratory of Aquatic Resources Conservation and Development, Key Laboratory of Aquatic Animal Genetic Breeding and Nutrition, Chinese Academy of Fishery Sciences, Huzhou Cent Hosp, Huzhou University, College of Life Science, Huzhou University, Huzhou 313000, PR China
| | - Cuihua Wang
- Key Laboratory of Marine and Estuarine Fisheries, Ministry of Agriculture, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, People's Republic of China.
| | - Yang Li
- Zhejiang Provincial Key Laboratory of Aquatic Resources Conservation and Development, Key Laboratory of Aquatic Animal Genetic Breeding and Nutrition, Chinese Academy of Fishery Sciences, Huzhou Cent Hosp, Huzhou University, College of Life Science, Huzhou University, Huzhou 313000, PR China.
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Ge S, Xing Q, Zhang A, Wang Y. Effect of traditional Chinese medicine (TCM) on survival, quality of life, and immune function in patients with ovarian carcinoma: A protocol for systematic review and meta analysis. Medicine (Baltimore) 2021; 100:e23904. [PMID: 33466133 PMCID: PMC7808448 DOI: 10.1097/md.0000000000023904] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 11/30/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Traditional Chinese medicine (TCM) has been widely applied as promising adjunctive drugs for ovarian carcinoma (OC) in China and other Asian countries. However, its exact clinical efficacy and safety is still not well investigated. In this study, we aimed to summarize the efficacy of TCM on survival, quality of life (QoL), and immune function in patients with OC through the meta-analysis. METHODS Relevant clinical trials of TCM for the treatment OC patients will be searched in Cochrane Library, Web of Science, Google Scholar, PubMed, Medline, Embase, China Scientific Journal Database, China National Knowledge Infrastructure, Chinese Biomedical Literature Database, and Wanfang Database from their inception to November 2020. Two researchers will perform data extraction and risk of bias assessment independently. The clinical outcomes, including overall survival (OS), QoL, immune function, tumor markers, and adverse events, were systematically evaluated by using Review Manager 5.3 and Stata 14.0 statistical software. RESULTS The results of this study will provide high-quality evidence for the effect of TCM on survival, QoL and immune function in patients with OC. CONCLUSION The conclusions of this meta-analysis will be published in a peer-reviewed journal, and draw an objective conclusion of the efficacy of TCM on survival, QoL, and immune function in patients with OC. TRIAL REGISTRATION NUMBER INPLASY2020110104.
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Affiliation(s)
- Shuxia Ge
- Department of Obstetrics and Gynecology, Liaocheng People's Hospital
| | - Qianqian Xing
- Department of Quality Control, Liaocheng City Dongchangfu District Maternal and Child Health Hospital
| | - Anqi Zhang
- Department of Central Laboratory, Liaocheng People's Hospital, Liaocheng 252000, Shandong Province, P.R. China
| | - Yucui Wang
- Department of Obstetrics and Gynecology, Liaocheng People's Hospital
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Xing Q, Ma Y, Fu X, Cao Q, Zhang Y, You C. Effects of heat treatment, homogenization pressure, and overprocessing on the content of furfural compounds in liquid milk. J Sci Food Agric 2020; 100:5276-5282. [PMID: 32530047 DOI: 10.1002/jsfa.10578] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 05/17/2020] [Accepted: 06/02/2020] [Indexed: 05/21/2023]
Abstract
BACKGROUND Sterilization of milk is aimed at killing the microorganisms present. There are three main sterilization methods commonly used in milk processing: high temperature and short time (HTST) pasteurization, ultrahigh pasteurization (UP), and ultrahigh temperature (UHT) sterilization. The Maillard reaction is of special interest in studying the effect of heat treatment on milk quality. Furfural compounds are one of the typical intermediates of the Maillard reaction, which have safety risks related to mutagenic and genotoxic effects. The furfural compounds content is directly related to the heat treatment intensity. RESULTS The furfural compounds content was measured using high-performance liquid chromatography with ultraviolet detection in 12 min. Then, 13 levels of heat treatment intensity (combinations of temperature and time) and three levels of homogenization pressure were selected to study the change of the furfural compounds content after different processing technologies in a pilot plant. The results show a higher temperature treatment can stimulate more Maillard reaction intermediates, such as hydroxymethylfurfural and furfural. A temperature regression evaluation model and content prediction models of hydroxymethylfurfural and furfural were developed to quantify the relationship between the furfural content and heat treatment with the data from the pilot plant. CONCLUSION Based on the temperature evaluation model, the heating temperature of three milk products was evaluated. The homogenization pressures had little effect on the furfural content in liquid milk. The emergence of the furyl methyl ketone and methylfurfural can be detected after overprocessing of the liquid milk. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Qianqian Xing
- State Key Laboratory of Dairy Biotechnology, Shanghai Engineering Research Center of Dairy Biotechnology, Postdoctoral Workstation of Bright Dairy - Shanghai Jiao Tong University, Dairy Research Institute, Bright Dairy & Food Co., Ltd, Shanghai, 200436, China
- Synergetic Innovation Center for Food Safety and Nutrition, Jiangnan University, Wuxi, 214122, China
| | - Yanran Ma
- Department of Bioinformatics and Biostatistics, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xiaofei Fu
- State Key Laboratory of Dairy Biotechnology, Shanghai Engineering Research Center of Dairy Biotechnology, Postdoctoral Workstation of Bright Dairy - Shanghai Jiao Tong University, Dairy Research Institute, Bright Dairy & Food Co., Ltd, Shanghai, 200436, China
- Synergetic Innovation Center for Food Safety and Nutrition, Jiangnan University, Wuxi, 214122, China
| | - Qing Cao
- State Key Laboratory of Dairy Biotechnology, Shanghai Engineering Research Center of Dairy Biotechnology, Postdoctoral Workstation of Bright Dairy - Shanghai Jiao Tong University, Dairy Research Institute, Bright Dairy & Food Co., Ltd, Shanghai, 200436, China
- Synergetic Innovation Center for Food Safety and Nutrition, Jiangnan University, Wuxi, 214122, China
| | - Yue Zhang
- Department of Bioinformatics and Biostatistics, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Chunping You
- State Key Laboratory of Dairy Biotechnology, Shanghai Engineering Research Center of Dairy Biotechnology, Postdoctoral Workstation of Bright Dairy - Shanghai Jiao Tong University, Dairy Research Institute, Bright Dairy & Food Co., Ltd, Shanghai, 200436, China
- Synergetic Innovation Center for Food Safety and Nutrition, Jiangnan University, Wuxi, 214122, China
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Qu SP, Li GW, Ma H, Xing Q. MicroRNA-193a-3p participates in the progression of rheumatoid arthritis by regulating proliferation and apoptosis of MH7A cells through targeting IGFBP5. Eur Rev Med Pharmacol Sci 2020; 23:4850-4857. [PMID: 31210318 DOI: 10.26355/eurrev_201906_18072] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE This study aims to explore the regulatory effect of microRNA-193a-3p on rheumatoid arthritis (RA) and its underlying mechanism. PATIENTS AND METHODS Expression level of microRNA-193a-3p in synovial tissues extracted from 30 RA patients and healthy controls was detected by quantitative Real-time polymerase chain reaction (qRT-PCR). MH7A cells were subjected to TNF-α induction for constructing the in vitro RA model. After transfection of microRNA-193a-3p inhibitor in MH7A cells, proliferation and apoptosis were detected by cell counting kit-8 (CCK-8) assay and flow cytometry, respectively. Enzyme-linked immunosorbent assay (ELISA) was conducted to determine levels of interleukin 6 (IL-6) and IL-8 in MH7A cells. Subsequently, the dual-luciferase reporter gene assay was carried out to verify the binding condition between microRNA-193a-3p and IGFBP5. Rescue experiments were conducted to evaluate the proliferation and apoptosis of MH7A cells with knockdown of microRNA-193a-3p and IGFBP5. RESULTS MicroRNA-193a-3p was highly expressed in synovial tissues of RA patients and TNF-α-induced MH7A cells than those of controls. TNF-α induction significantly increased the proliferative rate of MH7A cells, reaching the peak at 96 h. After knockdown of microRNA-193a-3p, the promoted proliferation by TNF-α induction was significantly inhibited. In addition, TNF-α induction significantly inhibited the apoptosis of MH7A cells. After inhibition of microRNA-193a-3p expression, the inhibited apoptosis by TNF-α induction remarkably increased. TNF-α induction upregulated levels of IL-6 and IL-8 in MH7A cells, which were remarkably reduced after the microRNA-193a-3p knockdown. Dual-luciferase reporter gene assay confirmed that IGFBP5 could bind to microRNA-193a-3p, and its expression was negatively regulated by microRNA-193a-3p. The regulatory effects of microRNA-193a-3p on proliferation and apoptosis of MH7A cells were reversed by IGFBP5 knockdown. CONCLUSIONS MicroRNA-193a-3p is highly expressed in the synovial tissues and cells of rheumatoid arthritis. MicroRNA-193a-3p participates in the process of rheumatoid arthritis by regulating the proliferation, apoptosis and inflammatory response of MH7A cells through targeting IGFBP5.
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Affiliation(s)
- S-P Qu
- Department of Rheumatology and Immunology, Qingdao Municipal Hospital, Qingdao, China.
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Xing Q, Yang Y, Liu YY, Hu L, Zhang R, Du JL. [Insulin autoimmune syndrome induced by alpha-lipoic acid in two diabetic patients and HLA-DRB1 alleles analysis in first-degree family members]. Zhonghua Nei Ke Za Zhi 2020; 59:641-644. [PMID: 34865384 DOI: 10.3760/cma.j.cn112138-20190813-00561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Affiliation(s)
- Q Xing
- Department of Endocrinology, the First Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Y Yang
- Department of Endocrinology, the First Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Y Y Liu
- Department of Endocrinology, the First Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - L Hu
- Department of Endocrinology, the First Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - R Zhang
- Department of Endocrinology, the First Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - J L Du
- Department of Endocrinology, the First Affiliated Hospital of Dalian Medical University, Dalian 116011, China
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Liang C, Zhang XX, Xing Q, Yi JL, Zhang YQ, Li CY, Liu Y, Tang SJ. [Study on the prevalence of Beijing genotype Mycobacterium tuberculosis and its relationship with second-line anti-tuberculosis drug resistance]. Zhonghua Jie He He Hu Xi Za Zhi 2020; 43:356-361. [PMID: 32294818 DOI: 10.3760/cma.j.cn112147-20191215-00827] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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 explore the prevalence risk factors of Beijing genotype Mycobacterium tuberculosis (MTB) in Beijing and its correlation with second-line anti tuberculosis drug resistance. Methods: A total of 1 140 clinical MTB positive strains were collected from various districts in Beijing, and the drug sensitivity was detected by proportion method. Beijing genotype and non Beijing genotype MTB were identified by the method of Spoligotyping. Using SPSS 22.0 statistical software, chi square test or Fisher exact probability test was used to analyze the experimental data. Results: Among 1 140 MTB clinical isolates, 941 (82.5%) were Beijing genotype MTB, 199 were non Beijing genotype MTB. There were 663 males (70.5%) in Beijing genotype and 124 males (62.3%) in non Beijing genotype strains. There were significant differences in the proportion of males between the two genotypes [P=0.021, OR (95% CI):1.442 (1.048-1.985)]. There were 441 floating population (46.9%) in Beijing genotype MTB and 78 floating population (39.2%) in non Beijing genotype MTB. There was a significant difference in the proportion of floating population between the two genotypes [P=0.048,OR (95%CI):1.368(1.001-1.869)]. There were 129 patients (13.7%) aged 65 or older in Beijing genotype MTB, 40 patients (20.1%) aged 65 or older in non Beijing genotype MTB. The difference was statistically significant [P=0.021, or (95% CI): 0.631 (0.426-0.936)]. The resistance drug rates of Levofloxacin (Lfx), Amikacin (Am), Capreomycin (Cm), Para-aminosalicylic (PAS) in Beijing genotypes were 5.5% (52/941), 1.3% (12/941), 3.2% (30/941) and 3.0% (28/941), respectively, and those of non Beijing genotypes were 10.6% (21/199), 8.5% (17/199, 12.6% (25/199) and 11.6% (23/199), the difference was statistically significant (all P<0.05). There were 58 (6.2%) multidrug-resistant (MDR) strains in Beijing genotype MTB and 19 (9.5%) multidrug-resistant strains in non Beijing genotype. There was no significant difference in the proportion of MDR strains between Beijing genotype and non Beijing genotype (P>0.05). Conclusions: Beijing genotype MTB is widespread in Beijing and has a higher proportion in male population and floating population. Compared with non Beijing genotype, Beijing genotype MTB has a lower resistance rate to Lfx, Am, Cm and PAS, and there is no significant difference in the proportion of MDR-TB patients between the two genotypes.
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Affiliation(s)
- C Liang
- Department of Bacteriology and Immunology, Capital Medical University, Beijing Chest Hospital/Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing 101149, China
| | - X X Zhang
- Department of Bacteriology and Immunology, Capital Medical University, Beijing Chest Hospital/Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing 101149, China
| | - Q Xing
- Central Laboratory, Beijing Research Institute for Tuberculosis Control, Xicheng District, Beijing 100035, China
| | - J L Yi
- Central Laboratory, Beijing Research Institute for Tuberculosis Control, Xicheng District, Beijing 100035, China
| | - Y Q Zhang
- Department of Bacteriology and Immunology, Capital Medical University, Beijing Chest Hospital/Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing 101149, China
| | - C Y Li
- Department of Bacteriology and Immunology, Capital Medical University, Beijing Chest Hospital/Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing 101149, China
| | - Y Liu
- Department of Bacteriology and Immunology, Capital Medical University, Beijing Chest Hospital/Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing 101149, China
| | - S J Tang
- Department of Tuberculosis, Capital Medical University, Beijing Chest Hospital/Beijing Tuberculosis and Thoracic TumorResearch Institute, Beijing 101149, China
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Xiong H, Jiang M, Zhang W, Ye H, Chen Z, Zeng F, Chen S, Xing Q, Luo X. 994 Risk and association of HLA alleles with methimazole induced cutaneous adverse reactions in Chinese Han population. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.1070] [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: 11/28/2022]
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22
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Xiong H, Wang L, Jiang M, Chen S, Yang F, Zhu H, Zhu Q, Xing Q, Luo X. 028 Comprehensive assessment of T cell receptor β repertoire in Stevens–Johnson syndrome/Toxic Epidermal Necrolysis patients using high-throughput sequencing. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.104] [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: 11/25/2022]
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Li YD, Maimaitiabudula M, Zhou XH, Lu YM, Zhang JH, Xing Q, Tang BP. [Analysis of the KCNQ1 gene mutation in 2 families with congenital long QT syndrome type 1 in Xinjiang Uygur Autonomous Region]. Zhonghua Xin Xue Guan Bing Za Zhi 2018; 46:868-873. [PMID: 30462975 DOI: 10.3760/cma.j.issn.0253-3758.2018.11.010] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Objective: Present study analyzed the association betwen the postassium voltage-gated channel KQT-like subfamily member 1 gene (KCNQ1) mutation and the clinical and the electrocardiographic features in 2 pedigrees with congenital long QT syndrome type 1 (LQT1) in Xinjiang Uygur Autonomous Region. Methods: Three family members were diagnosed as LQT1 patients in 2 Uygur congenital LQT1 families, these 3 LQT1 patients served as long QT group, 24 Uygur healthy volunteers served as control group. Electrocardiogram (ECG) and the gene detection were applied to compare the ECG and molecular genetic features between the long QT group and control group, and to explore the relationship between the KCNQ1 gene mutation and the clinical and the electrocardiographic features in these 2 families with congenital long QT syndrome type 1. Results: The LQT1 was diagnosed in 3 cases of the 2 pedigrees. The common features of ECG were QTc>480 ms, prolonged ST segment, and delayed T wave. The gene test evidenced a polymorphism of KCNQ1 gene exon 13:47G➝A(R16R). The mutation of 133G➝A9(G45S) of exon 16 resulted in the change of the original glycine (G) to serine (s). The ECG of the control group were normal, and there were no KCNQ1 gene mutations in control group. Conclusion: The exon sequencing results of KCNQ1 gene in 2 Xinjiang Uygur congenital long LQT1 families showed that exon16 missense changes (133G to A (G45S)) can lead to amino acid mutation, this mutation may be a pathogenic mutation. Subsequent validation of the expanded sample will provide a reference for revealing the relationship between the KCNQ1 gene and the pathogenesis of LQT1.
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Affiliation(s)
- Y D Li
- Pacing and Electrophysiology Department, First Affiliated Hospital of Xinjiang Medical University, Urumqi 830000, China
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Xing Q, Wang B, Wang X, Tao J. Unbounded and revocable hierarchical identity-based encryption with adaptive security, decryption key exposure resistant, and short public parameters. PLoS One 2018; 13:e0195204. [PMID: 29649326 PMCID: PMC5897089 DOI: 10.1371/journal.pone.0195204] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 03/19/2018] [Indexed: 11/18/2022] Open
Abstract
Revocation functionality and hierarchy key delegation are two necessary and crucial requirements to identity-based cryptosystems. Revocable hierarchical identity-based encryption (RHIBE) has attracted a lot of attention in recent years, many RHIBE schemes have been proposed but shown to be either insecure or bounded where they have to fix the maximum hierarchical depth of RHIBE at setup. In this paper, we propose a new unbounded RHIBE scheme with decryption key exposure resilience and with short public system parameters, and prove our RHIBE scheme to be adaptively secure. Our system model is scalable inherently to accommodate more levels of user adaptively with no adding workload or restarting the system. By carefully designing the hybrid games, we overcome the subtle obstacle in applying the dual system encryption methodology for the unbounded and revocable HIBE. To the best of our knowledge, this is the first construction of adaptively secure unbounded RHIBE scheme.
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Affiliation(s)
- Qianqian Xing
- College of Computer, National University of Defense Technology, Changsha, Hunan, China
| | - Baosheng Wang
- College of Computer, National University of Defense Technology, Changsha, Hunan, China
- * E-mail:
| | - Xiaofeng Wang
- College of Computer, National University of Defense Technology, Changsha, Hunan, China
| | - Jing Tao
- College of Computer, National University of Defense Technology, Changsha, Hunan, China
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Xing Q, Fu Q, Jin Y, Liang X. Study on the separation of triterpene saponins from Panax notoginseng by off-line two-dimensional supercritical fluid chromatography–ultrahigh-performance liquid chromatography. ACTA CHROMATOGR 2017. [DOI: 10.1556/1326.2017.28405] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Qianqian Xing
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | | | - Yu Jin
- Engineering Research Center of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
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Zhou X, Lv W, Zhang W, Ye Y, Li Y, Zhou Q, Zhang J, Xing Q, Lu Y, Zhang L, Wang H, Qin W, Tang B. Comparative efficacy and safety of contact force-sensing catheter and second-generation cryoballoon ablation for atrial fibrillation: a meta-analysis. ACTA ACUST UNITED AC 2017; 50:e6409. [PMID: 28793059 PMCID: PMC5572854 DOI: 10.1590/1414-431x20176409] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Accepted: 05/23/2017] [Indexed: 11/21/2022]
Abstract
This meta-analysis compared the efficacy and safety of the contact force (CF)-sensing catheter and second-generation cryoballoon (CB) ablation for treating atrial fibrillation (AF). Six controlled clinical trials comparing ablation for AF using a CF-sensing catheter or second-generation CB were identified from PubMed, EMBASE, Cochrane Library, Wanfang Data, and China National Knowledge Infrastructure. The procedure duration was significantly lower in the CB group compared with that in the CF group [mean difference (MD)=29.4; 95%CI=17.84–40.96; P=0.01], whereas there was no difference between the groups for fluoroscopy duration (MD=0.59; 95%CI=–4.48–5.66; P=0.82). Moreover, there was no difference in the incidence of non-lethal complications (embolic event, tamponade, femoral/subclavian hematoma, arteriovenous fistula, pulmonary vein stenosis, phrenic nerve palsy, and esophageal injury) between the CB and the CF groups (8.38 vs 5.35%; RR=0.66; 95%CI=0.37–1.17; P=0.15). Transient phrenic nerve palsy occurred in 17 of 326 patients (5.2%) of the CB group vs none in the CF group (RR=0.12; 95%CI=0.03–0.43; P=0.001). A comparable proportion of patients in CF and CB groups suffered from AF recurrence during the 12-month follow-up after a single ablation procedure [risk ratio (RR)=1.03; 95%CI=0.78–1.35; P=0.84]. AF ablation using CF-sensing catheters and second-generation CB showed comparable fluoroscopy duration and efficacy (during a 12-month follow-up), with shorter procedure duration and different complications in the CB group.
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Affiliation(s)
- X Zhou
- Pacing and Electrophysiological Department, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - W Lv
- Pacing and Electrophysiological Department, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - W Zhang
- Pacing and Electrophysiological Department, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Y Ye
- Pacing and Electrophysiological Department, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Y Li
- Pacing and Electrophysiological Department, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Q Zhou
- Pacing and Electrophysiological Department, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - J Zhang
- Pacing and Electrophysiological Department, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Q Xing
- Pacing and Electrophysiological Department, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - Y Lu
- Pacing and Electrophysiological Department, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - L Zhang
- Pacing and Electrophysiological Department, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - H Wang
- Pacing and Electrophysiological Department, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
| | - W Qin
- Xinjiang Medical University, Urumqi, Xinjiang, China
| | - B Tang
- Pacing and Electrophysiological Department, the First Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang, China
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Wu M, Zhou XH, Ruozha B, Song SF, Li YD, Zhang JH, Xing Q, Lu YM, Tang BP. [The relationship between LDL-C and ischemic stroke in 2 470 patients with nonvalvular atrial fibrillation in Xinjiang region]. Zhonghua Nei Ke Za Zhi 2017; 56:258-262. [PMID: 28355717 DOI: 10.3760/cma.j.issn.0578-1426.2017.04.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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 evaluate the association between LDL-C and ischemic stroke in patients with nonvalvular atrial fibrillation (AF). Method: A total of 2 470 patients with nonvalvular AF were included in the present study. The clinical data and laboratory examination results of the patients in the hospital were collected. The subjects were either divided into the ischemic stroke history (n=560), and non- ischemic stroke history groups (n=1 910), or divided into the low-middle risk (n=566) and high risk groups (n=1 904) based on CHA(2)DS(2) - VASc score. Results: There were significant differences in the proportion of Han, the ratio of gender, age, hemoglobin, hematocrit, ALT, serum uric acid, HDL-C and LDL-C between the patients with ischemic stroke history and without (all P<0.05). Similarly, there were significant differences in the proportion of Han, the ratio of gender, age, white blood cell count, hemoglobin, hematocrit, platelet count, ALT, albumin, TG and LDL-C between subjects in the low-middle risk group and those in the high risk group (all P<0.05). A logistical regression analysis showed that LDL-C was an independent risk factor for both the ischemic stroke history (OR 2.089, 95% CI 1.860-2.347, P<0.05), and future ischemic stroke risk (OR 1.270, 95% CI 1.079-1.494, P<0.05) in patients with nonvalvular AF. Conclusion: LDL-C is associated with ischemic stroke in patients with nonvalvular AF, and it is also an independent risk factor for future ischemic stroke in these patients.
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Affiliation(s)
- M Wu
- Cardiology Center, the First Affiliated Hospital, Xinjiang Medical University, Urumchi 830054, China
| | | | | | | | | | | | | | | | - B P Tang
- Cardiology Center, the First Affiliated Hospital, Xinjiang Medical University, Urumchi 830054, China
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Xing Q. Information or resolution: Which is required from an SEM to study bulk inorganic materials? Scanning 2016; 38:864-879. [PMID: 27400457 DOI: 10.1002/sca.21336] [Citation(s) in RCA: 4] [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: 05/17/2016] [Accepted: 06/27/2016] [Indexed: 06/06/2023]
Abstract
Significant technological advances in scanning electron microscopy (SEM) have been achieved over the past years. Different SEMs can have significant differences in functionality and performance. This work presents the perspectives on selecting an SEM for research on bulk inorganic materials. Understanding materials demands quantitative composition and orientation information, and informative and interpretable images that reveal subtle differences in chemistry, orientation/structure, topography, and electronic structure. The capability to yield informative and interpretable images with high signal-to-noise ratios and spatial resolutions is an overall result of the SEM system as a whole, from the electron optical column to the detection system. The electron optical column determines probe performance. The roles of the detection system are to capture, filter or discriminate, and convert signal electrons to imaging information. The capability to control practical operating parameters including electron probe size and current, acceleration voltage or landing voltage, working distance, detector selection, and signal filtration is inherently determined by the SEM itself. As a platform for various accessories, e.g. an energy-dispersive spectrometer and an electron backscatter diffraction detector, the properties of the electron optical column, specimen chamber, and stage greatly affect the performance of accessories. Ease-of-use and ease-of-maintenance are of practical importance. It is practically important to select appropriate test specimens, design suitable imaging conditions, and analyze the specimen chamber geometry and dimensions to assess the overall functionality and performance of an SEM. For an SEM that is controlled/operated with a computer, the stable software and user-friendly interface significantly improve the usability of the SEM. SCANNING 38:864-879, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Q Xing
- Ames Laboratory, Division of Materials Sciences and Engineering, Ames, Iowa
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Song SF, Zhou XH, Ruozha B, Wu M, Li YD, Zhang JH, Xing Q, Lu YM, Tang BP. [A study on the evaluation of anticoagulation status comparing of CHADS2 versus CHA2DS2-VASc scores in patients with non valvular atrial fibrillation in Xinjiang area]. Zhonghua Nei Ke Za Zhi 2016; 55:684-688. [PMID: 27586975 DOI: 10.3760/cma.j.issn.0578-1426.2016.09.006] [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: 06/06/2023]
Abstract
OBJECTIVE To evaluate the current status of anticoagulation therapy in patients with atrial fibrillation(AF)in Xinjiang, and compare the two scoring systems(CHADS2 and CHA2DS2-VASc scores) in determining the risk of strokes in AF patients in Xinjiang. METHODS Subjects with AF were collected by searching the electronic and paper medical records from 35 hospitals in Xinjiang area during October 2013 to October 2014, and followed up for the incident strokes after 10 to 12 months. RESULTS Totally, 5 953 AF patients were enrolled in the study with the age of (67.9±12.0) years old, and men to women ratio of 1.44. Most patients were in age groups of 60-69 (23.92%) and 70-79 years (37.81%). Among patients with a CHADS2 score of 1 or less, the CHA2DS2-VASc scores of these subjects ranged from 0 to 3. After 10 to 12 months of follow-up, 22 patients developed new strokes. Only 30.79% patients ( n=1 460) received the anticoagulation treatment among those (n=4 742) who need to be treated with anticoagulation drugs. In patients receiving anticoagulant therapy, 1 162 patients were treated with warfarin, and 298 patients with new oral anticoagulant drugs.Totally 1 110 patients treated with warfarin were monitored with international normalized ratio (INR). The median INR was 1.14 with only 97 cases meeting the recommended INR ranging of 2.0-3.0 in the guidelines. The compliance rate was 8.74%. CONCLUSIONS The current status of anticoagulation for AF in Xinjiang area is characterized by "low anticoagulation rate" and "low compliance rate". The CHA2DS2-VASc score is more suitable for predicting the risk of strokes in patients with non valvular atrial fibrillation in Xinjiang area.
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Affiliation(s)
- S F Song
- Department of Cardiology, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, China
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Yang Y, Chen S, Yang F, Zhang L, Alterovitz G, Zhu H, Xuan J, Yang X, Luo H, Mu J, He L, Luo X, Xing Q. HLA-B*51:01 is strongly associated with clindamycin-related cutaneous adverse drug reactions. Pharmacogenomics J 2016; 17:501-505. [DOI: 10.1038/tpj.2016.61] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 06/06/2016] [Accepted: 06/15/2016] [Indexed: 01/17/2023]
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Han E, Xing Q, Yan J, Wen W, Dellinger T, Wakabayashi M, Yim J. Preclinical data supporting the flavone baicalein as a novel mTOR inhibitor with potent activity against endometrial cancer cells. Gynecol Oncol 2016. [DOI: 10.1016/j.ygyno.2016.04.140] [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: 10/21/2022]
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Cao L, Wang K, Xing Q, Lin B, Zhang Y. Auto Detection of Lung Ground-Glass Opacity Nodules Based on High-Pass Filter and Gaussian Mixture Model. j med imaging hlth inform 2016. [DOI: 10.1166/jmihi.2016.1700] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Marcinkowski E, Luu T, Yuan Y, Mortimer J, Leong L, Portnow J, Xing Q, Wen W, Yim J. Abstract P6-13-17: The combination of eribulin and everolimus results in enhanced suppression of tumors in mouse models of triple negative breast cancer. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p6-13-17] [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: 11/16/2022]
Abstract
Abstract
INTRODUCTION. Triple negative breast cancer (TNBC) is an aggressive form of breast cancer with poor overall and relapse free survival. TNBC does not have targeted or matched therapies. Patients have worse outcomes after chemotherapy than with other subtypes of breast cancer. TNBC accounts for 12-17% of all breast cancers, leaving an unmet need for targeted therapy. Efforts to profile these tumors have revealed several potential targets.
The PI3K/AKT/mTOR pathway is a signal transduction pathway that links growth related hormone receptor interaction to downstream targets such as AKT and mammalian target of rapamycin (mTOR). This pathway targets affect cell proliferation, survival, and apoptosis. Patients with TNBC have high levels of AKT expression and activation of this pathway.
Microtubule-targeting agents have been used in TNBC. Eribulin mesylate is a microtubule-targeting agent with benefits in treating taxane and anthracycline refractory breast cancer via a microtubule targeting anti-mitotic mechanism. It has been approved for the treatment of TNBC in heavily pretreated patients.
Despite targeted therapy, breast cancer cells can grow resistant. Targeting multiple cancer growth pathways has been used in patients that progress on therapy or fail to respond. We hypothesized that targeting both mitotic blockade and PI3K/AKT/mTOR pathway may provide enhanced suppression of TNBC growth in both syngeneic and xenogeneic mouse models.
MATERIALS AND METHODS. MDA-MB-468 is a human TNBC cell line. 4T1 is a highly metastatic mouse TNBC cell line derived from a spontaneously arising Balb/c mammary tumor. 4T1 and MDA-MB-468 tumor cells were injected into the mammary fat pad of female Balb/c and NOD/SCID/IL2Rgamma null (NSG) mice (with matrigel) respectively. After tumors were formed Balb/c mice were treated three times per week with vehicle, eribulin (0.75 mg/kg i.v.), RAD001 (5 mg/kg via oral gavage) or a combination of both. NSG mice were treated three times per week with vehicle, eribulin (0.5 mg/kg i.v.), RAD001 (5 mg/kg by oral gavage), or a combination of both. Tumor volumes and body weights were measured. Student t-test was used to compare the means of two groups and determine the p value (p<0.05 is significant). N=3-8 per group.
Table I. 4T1 mouse breast cancer modelTreatmentTumor Volume (mm3)+/-SEMVehicle511.6+/-56.82Eribulin445.6+/-92.17Everolimus324.9+/-24.55Combination171.4+/-16.07 p valueCombination vs. Vehicle0.0001Combination vs. Eribulin0.01Combination vs. Everolimus0.001
Table II. MDA-MB-468 human breast cancer cells in immune deficient mice.TreatmentTumor Volume (mm3)+/-SEMVehicle966.8+/-69.2Eribulin67.81+/-11.79Everolimus830.6+/-156.3Combination31.37+/-3.37 p valueCombination vs. Eribulin0.041Combination vs. Everolimus0.0076
RESULTS. In the 4T1 syngeneic breast cancer mouse model, the combination of Eribulin and Everolimus resulted in marked suppression of tumor growth which was statistically significant versus vehicle treatment alone, or Eribulin or Everolimus alone (Table I). In the MDA-MB-468 model, the combination of Eribulin and Everolimus demonstrated marked suppression of tumor growth which was statistically significant compared to either agent alone (Table II).
Citation Format: Marcinkowski E, Luu T, Yuan Y, Mortimer J, Leong L, Portnow J, Xing Q, Wen W, Yim J. The combination of eribulin and everolimus results in enhanced suppression of tumors in mouse models of triple negative breast cancer. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P6-13-17.
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Bi D, Wang H, Shang Q, Xu Y, Wang F, Chen M, Ma C, Sun Y, Zhao X, Gao C, Wang L, Zhu C, Xing Q. Association of COL4A1 gene polymorphisms with cerebral palsy in a Chinese Han population. Clin Genet 2016; 90:149-55. [PMID: 26748532 DOI: 10.1111/cge.12723] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 12/28/2015] [Accepted: 01/04/2016] [Indexed: 12/24/2022]
Abstract
The basement membrane (BM) is an extracellular matrix associated with overlying cells and is important for proper tissue development, stability, and physiology. COL4A1 is the most abundant component of type IV collagen in the BM, and COL4A1 variants can present with variable phenotypes that might be related to cerebral palsy (CP). We postulated, therefore, that variations in the COL4A1 gene might play an important role in the etiology of CP. In this study, six single nucleotide polymorphisms (SNPs) in the COL4A1 gene were genotyped among 351 CP patients and 220 healthy controls from the Chinese Han population. Significant association was found for an association between CP and rs1961495 (allele: p = 0.008, odds ratio (OR) = 1.387, 95% confidence interval (CI) = 1.088-1.767) and rs1411040 (allele: p = 0.009, OR = 1.746, 95% CI = 1.148-2.656) SNPs of the COL4A1 gene. Multifactor dimensionality reduction analysis suggested that these SNPs had interactive effects on the risk of CP. This study is the first attempt to investigate the contribution of polymorphisms in the COL4A1 gene to the susceptibility of CP in a Chinese Han population. This study shows an association of the COL4A1 gene with CP and suggests a potential role of COL4A1 in the pathogenesis of CP.
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Affiliation(s)
- D Bi
- Department of Pediatrics, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - H Wang
- Children's Hospital and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Q Shang
- Department of Pediatrics, Zhengzhou Children's Hospital, Zhengzhou, China
| | - Y Xu
- Department of Pediatrics, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - F Wang
- Department of Neurosurgery, Tongji Hospital, Tongji University, Shanghai, China
| | - M Chen
- Children's Hospital and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - C Ma
- Department of Pediatrics, Zhengzhou Children's Hospital, Zhengzhou, China
| | - Y Sun
- Department of Pediatrics, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - X Zhao
- Children's Hospital and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - C Gao
- Department of Pediatrics, Zhengzhou Children's Hospital, Zhengzhou, China
| | - L Wang
- Children's Hospital and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - C Zhu
- Department of Pediatrics, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou, China.,Center for Brain Repair and Rehabilitation, University of Gothenburg, Gothenburg, Sweden
| | - Q Xing
- Children's Hospital and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
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Xu J, Zhang A, Zhang Z, Wang P, Qian Y, He L, Shi H, Xing Q, Du J. DNA methylation levels of imprinted and nonimprinted genes DMRs associated with defective human spermatozoa. Andrologia 2016; 48:939-947. [DOI: 10.1111/and.12535] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/16/2015] [Indexed: 01/13/2023] Open
Affiliation(s)
- J. Xu
- Institutes of Biomedical Sciences; Fudan University; Shanghai China
- NPFPC Laboratory of Contraception and Devices; Shanghai Institute of Planned Parenthood Research/Institute of Reproduction & Development; Fudan University; Shanghai China
| | - A. Zhang
- Bio-X Institutes; Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders; Ministry of Education; Shanghai Jiao Tong University; Shanghai China
| | - Z. Zhang
- NPFPC Laboratory of Contraception and Devices; Shanghai Institute of Planned Parenthood Research/Institute of Reproduction & Development; Fudan University; Shanghai China
| | - P. Wang
- NPFPC Laboratory of Contraception and Devices; Shanghai Institute of Planned Parenthood Research/Institute of Reproduction & Development; Fudan University; Shanghai China
| | - Y. Qian
- Fudan University; Shanghai China
| | - L. He
- Institutes of Biomedical Sciences; Fudan University; Shanghai China
- Bio-X Institutes; Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders; Ministry of Education; Shanghai Jiao Tong University; Shanghai China
| | - H. Shi
- NPFPC Laboratory of Contraception and Devices; Shanghai Institute of Planned Parenthood Research/Institute of Reproduction & Development; Fudan University; Shanghai China
- Shanghai Key Laboratory of Reproductive Medicine; Shanghai China
| | - Q. Xing
- Institutes of Biomedical Sciences; Fudan University; Shanghai China
| | - J. Du
- NPFPC Laboratory of Contraception and Devices; Shanghai Institute of Planned Parenthood Research/Institute of Reproduction & Development; Fudan University; Shanghai China
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Gong Z, Xing S, Zheng F, Xing Q. Increased expression of macrophage migration inhibitory factor in aorta of patients with coronary atherosclerosis. J Cardiovasc Surg (Torino) 2015; 56:631-637. [PMID: 24429801] [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: 06/03/2023]
Abstract
AIM The aim of the present study was to investigate the changes of macrophage migration inhibitory factor (MIF) in the aorta of patients with coronary atherosclerosis and to evaluate the relationship between aortic expression levels of MIF and atherosclerotic risk factors. METHODS We collected discarded aortic specimens from patients (N.=36) undergoing coronary artery bypass graft surgery (CABG), and studied the presence and distribution of MIF by immunohistochemistry. The arterial tissues from 10 subjects without known atherosclerosis through the kidney donation program were taken as control group. The preoperative serum triglycerides, total cholesterol, low density lipoprotein cholesterol, high density lipoprotein cholesterol, lipoprotein(a), apolipoprotein A, apolipoprotein B, total bilirubin, direct bilirubin, and indirect bilirubin levels of patients were examined and the coronary angiography was performed in order to assess the severity of atherosclerotic lesions. RESULTS MIF was detectable in aorta from CABG patients. The aortic MIF expression was elevated in smokers, and patients with hypertension or diabetes. In addition, the aortic MIF expression was associated with the levels of triglycerides, total cholesterol, low density lipoprotein cholesterol, lipoprotein (a), apolipoprotein B, total bilirubin, direct bilirubin, indirect bilirubin and coronary severity scores in simple regression analysis. However, the expression of MIF was only correlated to coronary severity scores in multiple regression analysis. CONCLUSION MIF is overexpressed in aorta from patients with coronary atherosclerosis and the aortic MIF expression is correlated with the severity of coronary artery disease.
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Affiliation(s)
- Z Gong
- Department of Cardiology, Qianfoshan Hospital, Shandong University, Jinan, PR China -
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Yang F, Xuan J, Chen J, Zhong H, Luo H, Zhou P, Sun X, He L, Chen S, Cao Z, Luo X, Xing Q. HLA-B*59:01: a marker for Stevens-Johnson syndrome/toxic epidermal necrolysis caused by methazolamide in Han Chinese. Pharmacogenomics J 2015; 16:83-7. [PMID: 25918017 DOI: 10.1038/tpj.2015.25] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 02/26/2015] [Accepted: 03/02/2015] [Indexed: 11/09/2022]
Abstract
Methazolamide is an intraocular pressure-lowering drug that is used in the treatment of glaucoma and other ophthalmologic abnormalities. The use of methazolamide has been shown to cause Stevens-Johnson syndrome (SJS) and toxic epidermal necrolysis (TEN) in patients of Asian ancestry. Methazolamide-induced SJS/TEN is associated with the presence of HLA-B59 serotype/HLA-B*59:01 in Korean and Japanese populations. To better understand the genetic risk factors for these adverse reactions in the Han Chinese population, we characterized the HLA class I genotypes of eight Chinese patients with methazolamide-induced SJS/TEN from 2008 to 2014. The frequency of HLA-B*59:01 was 87.5% (7/8) in the case patients, which was significantly different from 0% (0/30) in the methazolamide-tolerant patients (odds ratio (OR)=305.0; P=6.3 × 10(-7)) and 0.35% (1/283) in healthy subjects from the human major histocompatibility complex database (OR=1974.0; P=2.0 × 10(-12)). HLA-C*01:02, which is closely linked to HLA-B*59:01, had a weaker but notable association with methazolamide-induced SJS/TEN compared with the tolerant controls (OR=12.1; P=0.016) and general population (OR=15.5; P=2.0 × 10(-3)). The distribution of the HLA-B*59:01-C*01:02 haplotype was also significantly different in cases and controls. This study demonstrated a strong association between HLA-B*59:01 and methazolamide-induced SJS/TEN in the Han Chinese population for the first time. Pretherapy screening for HLA-B*59:01 would be useful to reduce the risk of methazolamide-induced SJS/TEN.
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Affiliation(s)
- F Yang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, China
| | - J Xuan
- Children's Hospital and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - J Chen
- Department of Ophthalmology and Vision Science, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - H Zhong
- Children's Hospital and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - H Luo
- University of Arkansas at Little Rock/University of Arkansas for Medical Sciences Joint Bioinformatics Program, Little Rock, AR, USA
| | - P Zhou
- Center of Bioinformatics (COBI) and Key Laboratory for Neuroinformation of Ministry of Education, School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - X Sun
- Department of Ophthalmology and Vision Science, Eye & ENT Hospital, Fudan University, Shanghai, China
| | - L He
- Children's Hospital and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - S Chen
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, China
| | - Z Cao
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, China
| | - X Luo
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, China
| | - Q Xing
- Children's Hospital and Institutes of Biomedical Sciences, Fudan University, Shanghai, China
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Li Y, Ji Y, Zhou X, Li H, Zhang H, Zhang Y, Li J, Xing Q, Zhang J, Hong Y, Tang B. Significance of sarcomere gene mutation in patients with dilated cardiomyopathy. Genet Mol Res 2015; 14:11200-10. [DOI: 10.4238/2015.september.22.14] [Citation(s) in RCA: 2] [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: 11/03/2022]
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Luyimbazi D, Luu T, Xing Q, Yan J, Tully D, Han E, Yip RML, Yim JH. Abstract P3-03-08: A comparison of PI3K inhibition by eribulin, other microtubule targeting agents and a DNA-damaging chemotherapeutic in triple negative and HER2 expressing breast cancer cell lines. Cancer Res 2013. [DOI: 10.1158/0008-5472.sabcs13-p3-03-08] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background. Eribulin is a microtubule-targeting agent with significant benefits in treating refractory metastatic breast cancer. Tumors from patients with Triple negative breast cancer (TNBC) have high levels of Akt expression and consistently show activation of the PI3K-mTOR pathway. Our objective was to compare Eribulin's ability to inhibit PI3K pathway activity and cell growth with two other microtubule targeting agents, Paclitaxel and Vinblastine, as well as a conventional DNA damaging chemotherapeutic Cisplatin.
Methods. MDA468 and BT549 TNBC cell lines and SKBR3 HER2 overexpressing breast cancer cell lines were used for this study. Western blot analysis was used to evaluate the expression of phosphorylated Akt-Ser473 (pAkt) and S6K1 (pS6K1) at different time points from 2 to 24 hours of treatment with Eribulin, Paclitaxel, Vinblastine, or Cisplatin. MTT assays were used to assess growth inhibition after 72 hours of treatment.
Results. Western blot analysis for MDA468 cells treated with Eribulin in varying concentrations confirm partial inhibition of pAkt expression as early as 4 hours at 100 pM concentration. Complete inhibition is reached at 50 nM. Partial inhibition of pS6K1 can be seen as early as 4 hours at 500 nM. Western analysis for MDA468 cells treated with Vinblastine in varying concentrations confirms inhibition of pAkt and pS6K1 beginning at 50 nM at 24 hours. Western analysis for MDA468 cells treated with Paclitaxel in varying concentrations showed increases in pAkt expression in a dose responsive fashion with significant increase in pAkt beginning at 5 nM concentration as well as increase in pS6K1 at 24 hours. Cisplatin markedly increases pAkt at 24 hours in a dose responsive fashion and decreases pS6K1 at 500 nM to 1000 nM concentration range in BT549. The IC50's for Eribulin ranged from 0.06 nM to 0.3 nM at 72 hours by MTT assay. The IC50's for Vinblastine ranged from 0.5 nM to 0.9 nM. Paclitaxel has reported IC50's in the 2 nM to 75 nM range in these cell lines, and Cisplatin has IC50's ranging from to ∼500 nM to ∼2000 nM at 72 hours in these cell lines.
Conclusion. Our study shows that for microtubule targeting agents such as Eribulin and Vinblastine that block polymerization of tubulin into microtubules, both pAkt and pS6K1 expression is suppressed. Growth inhibition is also confirmed, and is seen at doses when pAkt and pS6K1 are not suppressed. Eribulin inhibits pAkt and pS6K1 at lower concentrations than Vinblastine. With Paclitaxel, a microtubule-targeting agent that enhances polymerization of tubulin to microtubules, and Cisplatin, a conventional DNA damaging chemotherapeutic we observe an increase in pAkt expression, with variable effects on pS6K1. Enhancement of Akt activity is a likely survival response by cancer cells to chemotherapy, yet in the case of microtubule polymerization blockade as seen with Eribulin and Vinblastine, Akt activity is suppressed, along with downstream mTOR activity. The potential role of microtubule polymerization blockade in inhibition of the PI3K pathway needs further study. It may be a factor in the novel finding of pAkt and pS6K1 inhibition by Eribulin.
Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr P3-03-08.
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Affiliation(s)
- D Luyimbazi
- City of Hope National Medical Center, Duarte, CA
| | - T Luu
- City of Hope National Medical Center, Duarte, CA
| | - Q Xing
- City of Hope National Medical Center, Duarte, CA
| | - J Yan
- City of Hope National Medical Center, Duarte, CA
| | - D Tully
- City of Hope National Medical Center, Duarte, CA
| | - E Han
- City of Hope National Medical Center, Duarte, CA
| | - RML Yip
- City of Hope National Medical Center, Duarte, CA
| | - JH Yim
- City of Hope National Medical Center, Duarte, CA
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Luyimbazi D, Luu T, Xing Q, Yan J, Tully D, Han E, Yip RML, Yim JH. Abstract P3-03-07: Combination of eribulin and PI3K inhibitors in triple negative and HER2 expressing breast cancer cell lines results in synergistic growth inhibition and enhanced inhibition of the PI3K pathway. Cancer Res 2013. [DOI: 10.1158/0008-5472.sabcs13-p3-03-07] [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: 11/16/2022]
Abstract
Abstract
Background. Patients with triple negative breast cancer (TNBC) have high levels of pAkt expression and activation of the PI3K-mTOR pathway. Eribulin is a microtubule-targeting agent with benefits in treating taxane and anthracycline refractory breast cancer. Our objective was to evaluate its efficacy in inhibiting PI3K pathway activity and cell growth both alone and in combination with PI3K/MTOR inhibitors BEZ 235 and BKM 120.
Methods. TNBC cell lines MDA468, BT549, HS587T, MDA231, and HER2 expressing breast cancer cell line SKBR3 were used for this study. Both MDA468 and BT549 have PI3K- related mutations. The tetrazolium salt, 3-4,5 dimethylthiazol-2,5 diphenyl tetrazolium bromide (MTT) assays were used to assess growth inhibition after 72 hour treatment with eribulin, BEZ 235 and BKM 120 both alone and in combination. Combination indices (CI) generated by Chou-Talalay plots were used to quantify synergy. Western blots were used to evaluate the expression of phosphorylated Akt (pAkt), S6K1 (pS6K1) and S6 (pS6) from 30 min to 24 hours of treatment at different doses.
Results. Eribulin has IC50 ranging from 60 pM to 300 pM, BEZ 235 has IC50 ranging from 50 nM to 80 nM, and BKM has IC50 ranging from 500 nM or higher. Standard dilutions of eribulin in combination with BEZ 235 resulted in synergistic growth inhibition (CI<1) in both MDA468 and BT549 cells at all doses tested, but required higher concentrations (500 to 2000 nM) for BKM 120. Western blot analysis for all cell lines treated with eribulin showed pAkt inhibition by eribulin alone with doses as low as 1 nM and as early as 4 hours. PI3K inhibitor alone confirmed inhibition of pAkt, pS6K1 and pS6 at early time points with feedback increase in pAkt at 24h. While both BEZ 235 and BKM 120 treatment increased pAkt in a dose dependent fashion at 24 hours, combination treatment with eribulin showed a dose dependent decrease in pAkt.
Conclusion. Our study shows significant synergistic growth inhibition with the combination of eribulin and PI3K inhibitors. This may be related to inhibition by eribulin of the feedback increase in pAkt seen with PI3K inhibitors alone at later time points. These findings point to a potential role for combination therapy of both eribulin and PI3K inhibitors in treating refractory metastatic disease.
Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr P3-03-07.
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Affiliation(s)
- D Luyimbazi
- City of Hope National Medical Center, Duarte, CA
| | - T Luu
- City of Hope National Medical Center, Duarte, CA
| | - Q Xing
- City of Hope National Medical Center, Duarte, CA
| | - J Yan
- City of Hope National Medical Center, Duarte, CA
| | - D Tully
- City of Hope National Medical Center, Duarte, CA
| | - E Han
- City of Hope National Medical Center, Duarte, CA
| | - RML Yip
- City of Hope National Medical Center, Duarte, CA
| | - JH Yim
- City of Hope National Medical Center, Duarte, CA
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Zhang Y, Han Q, Fan H, Li W, Xing Q, Yan B. Genetic analysis of the TBX2 gene promoter in indirect inguinal hernia. Hernia 2013; 18:513-7. [PMID: 24309999 DOI: 10.1007/s10029-013-1199-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2013] [Accepted: 11/24/2013] [Indexed: 12/13/2022]
Abstract
PURPOSE Inguinal hernia is a common disease, majority of which are indirect inguinal hernia (IIH). A positive family history indicates that genetic factors play important roles in the IIH development. To date, genetic causes for IIH remain unknown. T-box transcription factor 2 (TBX2) is a major regulator in the morphogenesis and organogenesis. The human TBX2 gene is widely expressed in fetal and adult tissues, including muscle and connective tissues. Therefore, we speculated that altered TBX2 gene expression may be involved in the IIH formation. METHODS IIH patients (n = 129) and ethnic-matched healthy subjects (n = 198) were recruited for this study. The human TBX2 gene promoters were generated with PCR and directly sequenced to identify DNA sequence variants (DSVs). Furthermore, biological functions of the DSVs were examined with reporter gene constructs in cultured cells. RESULTS Total six DSVs within the TBX2 gene promoter were identified. A heterozygous DSV (g.59476307G>C) was identified in an IIH patient, but in none of controls, which significantly decreased the TBX2 gene promoter activities. Another heterozygous DSV (g.59476704G>C) was only found in one control, which did not affect TBX2 gene promoter activities. Four DSVs, g.59476316C>A (rs73991913), g.59476415T>C (rs1476781), g.59476510G>C (rs4455026) and g.59476892C>T (rs2286524), all of which were single nucleotide polymorphisms, were found in both IIH patients and controls with similar frequencies. CONCLUSIONS Our data suggested that the DSV within the TBX2 gene promoter was implicated in the IIH development as a rare cause.
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Affiliation(s)
- Y Zhang
- Division of Hand and Foot Surgery, Jining Medical University Affiliated Hospital, Jining Medical University, Jining, 272029, Shandong, China
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Fu X, Sun Y, Wang J, Xing Q, Zou J, Li R, Wang Z, Wang S, Hu X, Zhang L, Bao Z. Sequencing-based gene network analysis provides a core set of gene resource for understanding thermal adaptation in Zhikong scallop Chlamys farreri. Mol Ecol Resour 2013; 14:184-98. [PMID: 24128079 DOI: 10.1111/1755-0998.12169] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [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: 06/24/2013] [Revised: 08/28/2013] [Accepted: 09/07/2013] [Indexed: 12/14/2022]
Abstract
Marine organisms are commonly exposed to variable environmental conditions, and many of them are under threat from increased sea temperatures caused by global climate change. Generating transcriptomic resources under different stress conditions are crucial for understanding molecular mechanisms underlying thermal adaptation. In this study, we conducted transcriptome-wide gene expression profiling of the scallop Chlamys farreri challenged by acute and chronic heat stress. Of the 13 953 unique tags, more than 850 were significantly differentially expressed at each time point after acute heat stress, which was more than the number of tags differentially expressed (320-350) under chronic heat stress. To obtain a systemic view of gene expression alterations during thermal stress, a weighted gene coexpression network was constructed. Six modules were identified as acute heat stress-responsive modules. Among them, four modules involved in apoptosis regulation, mRNA binding, mitochondrial envelope formation and oxidation reduction were downregulated. The remaining two modules were upregulated. One was enriched with chaperone and the other with microsatellite sequences, whose coexpression may originate from a transcription factor binding site. These results indicated that C. farreri triggered several cellular processes to acclimate to elevated temperature. No modules responded to chronic heat stress, suggesting that the scallops might have acclimated to elevated temperature within 3 days. This study represents the first sequencing-based gene network analysis in a nonmodel aquatic species and provides valuable gene resources for the study of thermal adaptation, which should assist in the development of heat-tolerant scallop lines for aquaculture.
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Affiliation(s)
- X Fu
- Key Laboratory of Marine Genetics and Breeding (MGB), Ministry of Education, College of Marine Life Sciences, Ocean University of China, Qingdao, 266003, China
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Xing Q, Liang T, Shen G, Wang X, Jin Y, Liang X. Comprehensive HILIC × RPLC with mass spectrometry detection for the analysis of saponins in Panax notoginseng. Analyst 2012; 137:2239-49. [DOI: 10.1039/c2an16078a] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [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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Wang H, Li Q, Wang T, Yang G, Wang Y, Zhang X, Sang Q, Wang H, Zhao X, Xing Q, Shi J, He L, Wang L. A common polymorphism in the human aromatase gene alters the risk for polycystic ovary syndrome and modifies aromatase activity in vitro. Mol Hum Reprod 2011. [DOI: 10.1093/molehr/gar046] [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: 11/13/2022] Open
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Guo L, Luo X, Zhao A, Huang H, Wei Z, Chen L, Qin S, Shao L, Xuan J, Feng G, Minghua C, Luan J, He L, Xing Q. A novel heterozygous nonsense mutation of keratin 5 in a chinese family with Dowling-Degos disease. J Eur Acad Dermatol Venereol 2011; 26:908-10. [DOI: 10.1111/j.1468-3083.2011.04115.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [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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Akmal Y, Senthil M, Yan J, Xing Q, Wang Y, Somlo G, Yim J. Combination Of A Natural Compound (Baicalein) And Paclitaxel Results In Synergistic Apoptosis In Mouse Breast Cancer Cells. J Surg Res 2011. [DOI: 10.1016/j.jss.2010.11.560] [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: 11/29/2022]
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Abstract
Lipopolysaccharide (LPS) has been shown to be a prominent pathogenic factor in inflammatory bone loss. However, knowledge of the mechanisms involved is limited. The role of the SDF-1/CXCR4 (Stromal-derived factor-1 and its unique chemokine receptor) axis in LPS-induced bone loss has not been studied. The aim of this study was to investigate the role of the SDF-1/CXCR4 axis in LPS-stimulated inflammatory bone loss. The results show that LPS does not influence the expression of SDF-1/CXCR4 in osteoblasts, but up-regulates the expression of CXCR4 in pre-osteoclasts via Toll-like receptor 4, which subsequently enhances pre-osteoclast migration. Moreover, LPS promoted RANKL-induced osteoclast differentiation partially through CXCR4 up-regulation. In conclusion, the present study demonstrated, for the first time, that the up-regulated expression of CXCR4 in pre-osteoclasts by LPS stimulation is involved in LPS-induced bone resorption.
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Affiliation(s)
- Q. Xing
- Department of Orthodontics, University Medical Centre Groningen, University of Groningen, Hanzeplein 1 triade 24, 9700 RB Groningen, The Netherlands
- Key Laboratory for Oral Biomedical Engineering of Ministry of Education, School and Hospital of Stomatology, Wuhan University, China
| | - P. de Vos
- Pathology and Medical Biology, Section of Immunoendocrinology, University Medical Centre Groningen, University of Groningen, The Netherlands
| | - M.M. Faas
- Pathology and Medical Biology, Section of Immunoendocrinology, University Medical Centre Groningen, University of Groningen, The Netherlands
| | - Q. Ye
- Department of Orthodontics, University Medical Centre Groningen, University of Groningen, Hanzeplein 1 triade 24, 9700 RB Groningen, The Netherlands
- Pathology and Medical Biology, Section of Immunoendocrinology, University Medical Centre Groningen, University of Groningen, The Netherlands
| | - Y. Ren
- Department of Orthodontics, University Medical Centre Groningen, University of Groningen, Hanzeplein 1 triade 24, 9700 RB Groningen, The Netherlands
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Senthil M, Akmal YM, Xing Q, Yan J, Yim JH. Abstract P6-14-13: A Flavone from Traditional East Asian Natural Extract Inhibits STAT3 and Tumor Growth in a Syngeneic Mouse Breast Cancer Model. Cancer Res 2010. [DOI: 10.1158/0008-5472.sabcs10-p6-14-13] [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: 11/16/2022]
Abstract
Abstract
Background: Recent studies have shown that increased dietary consumption of flavones and isoflavones is associated with reduced risk of developing cancer. Natural plants/herbs used in Traditional East Asian
Medicine (TEAM) have been recognized as potentially efficacious natural treatments against cancer and are enriched with isoflavones and flavones, as well as other interesting compounds. We used a novel high throughput screening method to identify natural extracts that may have a potential anti-cancer effect and identified the TEAM natural product Scutellaria baicalensis and a known active component, the flavone, baicalein. The objective of our current study is to investigate the anti-cancer effects of baicalein in vitro and in vivo.
Methods: In vitro testing was performed in mouse (C3L5) and human (SKBR3) breast cancer cell lines. Cell viability was assessed by MTT assay. Apoptosis was assessed using FITC-Annexin V and PI staining with bivariate reading by flow cytometry at 48 h. A syngeneic mouse breast cancer model (C3H/HeJ — C3L5) was used for in vivo testing. Mice bearing subcutaneous tumors were either treated with daily intraperitoneal injection of vehicle or baicalein (20 mg/kg) five days a week for three weeks (n=6/group). Tumor size and weights were measured.
Results: Baicalein had a marked cytotoxic effect in C3L5 cells with an IC50 of less than 10mM (data not shown). FITC-Annexin V and PI analysis with flow cytometry for C3L5 cells treated at 10μM for 48h showed a marked increase in the Annexin V positive fraction indicative of apoptosis.
In vivo studies demonstrated a significantly decreased tumor growth in mice treated with intraperitoneal baicalein when compared to the control group (P<0.05).
Baicalein treated cells demonstrated STAT3 inhibition on western blot analysis by decreased presence of phospho-STAT3 (data not shown).
Conclusions: Baicalein, a flavone from TEAM demonstrates significant anti-cancer effects due to apoptosis in breast cancer. STAT3, a well-known anti-apoptotic signaling intermediate, is inhibited in activation as reflected by decreased phosphoSTAT3 which may account for these effects.
Citation Information: Cancer Res 2010;70(24 Suppl):Abstract nr P6-14-13.
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Affiliation(s)
- M Senthil
- City of Hope Cancer Center, Duarte, CA
| | - YM Akmal
- City of Hope Cancer Center, Duarte, CA
| | - Q Xing
- City of Hope Cancer Center, Duarte, CA
| | - J Yan
- City of Hope Cancer Center, Duarte, CA
| | - JH. Yim
- City of Hope Cancer Center, Duarte, CA
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50
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Ye Q, Xing Q, Ren Y, Harmsen MC, Bank RA. Endo180 and MT1-MMP are involved in the phagocytosis of collagen scaffolds by macrophages and is regulated by interferon-gamma. Eur Cell Mater 2010; 20:197-209. [PMID: 20931490 DOI: 10.22203/ecm.v020a16] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Subcutaneously implanted disks of hexamethylenediisocyanate or glutaraldehyde cross-linked sheep collagen (referred to as HDSC and GDSC, respectively) in mice show large differences in degradation rate. Although comparable numbers of macrophages are seen in HDSC and GDSC, phagocytosis of collagen by macrophages occurred only in GDSC. The molecular mechanisms involved in the phagocytosis of collagen by macrophages are essentially unknown. Immunofluorescence and RT-PCR showed that Endo180 was expressed in GDSC only. TissueFaxs showed that Endo180 co-localized with MT1-MMP on F4÷80 positive cells, which is likely responsible for the phagocytosis in GDSC. RT-PCR further showed that Endo180 expression correlated with high levels of IFN-γ mRNA. In vitro, IFN-γ induced the expression Endo180 and MT1-MMP in murine macrophages cultured on collagen type I (although too high levels of IFN-γ dampened the expression of Endo180 and MT1-MMP). Moreover, the expression of Endo180 and MT1-MMP induced by IFN-γ can be inhibited through IL-10. The differences in microenvironment between GDSC and HDSC (high IFN-γ and low IL-10 levels in GDSC, low IFN-γ and high IL-10 levels in HDSC) provide an explanation why phagocytosis of collagen by macrophages is only seen in GDSC. In summary, we show for the first time that the IFN-γ dependent co-expression of Endo180 and MT1-MMP on macrophages coincides with collagen phagocytosis, thus providing evidence that the mechanism of collagen phagocytosis operating in the foreign body reaction by macrophages is comparable with the mechanism of intracellular collagen degradation by fibroblasts seen under physiological conditions.
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Affiliation(s)
- Q Ye
- Stem Cell & Tissue Engineering Research Group, Medical Biology, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
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