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Wang HL, Yue K, Wu YS, Duan YS, Jing C, Wang XD. [Phase Ⅱ clinical trial of PD-1 inhibitor combined with chemotherapy for locally advanced resectable oral squamous cell carcinoma]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2024; 59:335-342. [PMID: 38599641 DOI: 10.3760/cma.j.cn115330-20231114-00207] [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: 04/12/2024]
Abstract
Objective: To explore the effectiveness and safety of programmed death 1(PD-1) inhibitory combined with chemotherapy as a neoadjuvant therapy for locally advanced resectable oral squamous cell carcinoma. Methods: This study was a randomized controlled phase Ⅱ trial. Patients recruited from Tianjin Medical University Cancer Institute and Hospital from July 2021 to February 2023 were randomly divided into two groups in a 1∶1 ratio: the experimental group (Toripalimab combined with albumin paclitaxel and cisplatin) and the control group (albumin paclitaxel and cisplatin); patients in both groups underwent three cycles of neoadjuvant therapy. After completion of neoadjuvant therapy, patients were evaluated and subsequent surgical treatment was performed. According to the completion of treatment, the analysis was conducted on both the full analysis set and the protocol set. The effectiveness and safety of treatments were evaluated. SPSS 20.0 software was used for statistical analysis. Results: A total of 41 cases with oral cancer were enrolled, including 26 males and 15 females, aged between 34 and 74 years old. There were 23 cases in the experimental group and 18 cases in the control group. A total of 23 cases completed neoadjuvant therapy and surgery according to the protocol. Experimental group and control group showed respectively the complete response rates of 1/19 and 0/17, the partial response rates of 13/19 and 8/17, the stage-down rates of 4/19 and 3/17, the pathologic complete response rate of 8/14 and 2/9, with no statistically significant differences in individual rates between two groups (P>0.05). The major pathological response rate of 13/14 in experimental group was higher than that of 2/9 in control group (P<0.05). The incidence of grade 3-4 adverse reactions related to treatment was low in both groups (4/23 vs. 3/18, χ2=0.13, P=0.72), and the most common serious adverse reactions in the experimental group were granulocyte deficiency and electrolyte disorder. There were no adverse reactions that affected subsequent surgical treatment or caused death, and the safety and tolerability were good. The median follow-up time was 15 months, and the one-year disease-free survival rate of the experimental group was higher than that of control group (92.86% vs. 77.78%, χ2=0.62, P=0.42), with a relative decrease of 87% in the risk of disease progression or death (P=0.029). For patients with programmed death-ligand 1(PD-L1) protein expression combined positive score≥20, the experimental group showed higher major pathological response rate than control group (5/5 vs. 0/4, P=0.03). Conclusion: The neoadjuvant therapy of immunotherapy combined with chemotherapy can improve the pathological remission of oral squamous cell carcinoma and the long-term survival benefits and the prognosis of patients.
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Affiliation(s)
- H L Wang
- Department of Maxillofacial and Otorhinolaryngological Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Laboratory of Basic and Translational Medicine on Head & Neck Cancer, Tianjin 300060, China
| | - K Yue
- Department of Maxillofacial and Otorhinolaryngological Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Laboratory of Basic and Translational Medicine on Head & Neck Cancer, Tianjin 300060, China
| | - Y S Wu
- Department of Maxillofacial and Otorhinolaryngological Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Laboratory of Basic and Translational Medicine on Head & Neck Cancer, Tianjin 300060, China
| | - Y S Duan
- Department of Maxillofacial and Otorhinolaryngological Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Laboratory of Basic and Translational Medicine on Head & Neck Cancer, Tianjin 300060, China
| | - C Jing
- Department of Maxillofacial and Otorhinolaryngological Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Laboratory of Basic and Translational Medicine on Head & Neck Cancer, Tianjin 300060, China
| | - X D Wang
- Department of Maxillofacial and Otorhinolaryngological Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin's Clinical Research Center for Cancer, Laboratory of Basic and Translational Medicine on Head & Neck Cancer, Tianjin 300060, China
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Chen M, Jiang X, Hu Q, Long J, He J, Wu Y, Wu Z, Niu Y, Jing C, Yang X. Toehold-Containing Three-Way Junction-Initiated Multiple Exponential Amplification and CRISPR/Cas14a Assistant Magnetic Separation Enhanced Visual Detection of Mycobacterium Tuberculosis. ACS Sens 2024; 9:62-72. [PMID: 38126108 DOI: 10.1021/acssensors.3c01622] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
Rapid and simple nucleic acid detection is significant for disease diagnosis and pathogen screening, especially under specific conditions. However, achieving highly sensitive and specific nucleic acid detection to meet the time and equipment demand remains technologically challenging. In this study, we proposed a magnetic separation enhanced colorimetry biosensor based on a toehold-containing three-way junction (TWJ) induced multiple isothermal exponential amplification and the CRISPR/Cas14a (C-TEC) biosensor. The TWJ template was designed as a Y-X-Y structure. In the presence of the target, the formation of toehold-containing TWJ complex induced primer extension, leading to the generation of amplified single-stranded DNA; this amplified DNA could then bind to either the free TWJ template for EXPAR reaction or the toehold of the TWJ complex for toehold-mediated strand displacement, thereby enabling the recycling of the target. The amplification products could trigger CRISPR/Cas14a for efficient trans-cleavage and release the magnetically bound gold nanoparticle probes for colorimetry detection. Using Mycobacterium tuberculosis 16S rDNA as the target, the proposed C-TEC could detect 16S rDNA down to 50 fM by the naked eye and 20.71 fM by UV-vis detector at 520 nm within 90 min under optimal conditions. We successfully applied this biosensor to clinical isolates of Mycobacterium tuberculosis. In addition, the C-TEC biosensor also showed feasibility for the detection of RNA viruses. In conclusion, the proposed C-TEC is a convenient, fast, and versatile platform for visual detection of pathogen DNA/RNA and has potential clinical applications.
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Affiliation(s)
- Mengqi Chen
- Chongqing Medical University, Key Laboratory of Medical Laboratory Diagnostics of the Education Ministry, College of Laboratory Medicine, Chongqing 400016, China
| | - Xue Jiang
- Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Qianfang Hu
- Department of Respiratory and Critical Care Medicine, the First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Jinyan Long
- Chongqing Medical University, Key Laboratory of Medical Laboratory Diagnostics of the Education Ministry, College of Laboratory Medicine, Chongqing 400016, China
| | - Jianwei He
- Department of Clinical Laboratory Medicine, Institute of Surgery Research, Daping Hospital, Army Medical University, Chongqing 400042, China
| | - Yuchen Wu
- Chongqing Medical University, Key Laboratory of Medical Laboratory Diagnostics of the Education Ministry, College of Laboratory Medicine, Chongqing 400016, China
| | - Zhili Wu
- Chongqing Medical University, Key Laboratory of Medical Laboratory Diagnostics of the Education Ministry, College of Laboratory Medicine, Chongqing 400016, China
| | - Yanhong Niu
- Chongqing Medical University, Key Laboratory of Medical Laboratory Diagnostics of the Education Ministry, College of Laboratory Medicine, Chongqing 400016, China
| | - Chunmei Jing
- Children's Hospital of Chongqing Medical University, Chongqing 400015, China
| | - Xiaolan Yang
- Chongqing Medical University, Key Laboratory of Medical Laboratory Diagnostics of the Education Ministry, College of Laboratory Medicine, Chongqing 400016, China
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Wang X, Tang X, Liu T, Li Y, Ling F, Jing C, Yao L, Zhou X, Xiang G. Constructing C-rich polymeric carbon nitride homojunctions for enhanced storage capacity of photo-rechargeable batteries. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.142281] [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: 04/03/2023]
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Wu X, Wang C, He L, Xu H, Jing C, Chen Y, Deng J, Lin A, Deng H, Cai H, Chen Y, Yang J, Zhang T, Cao Q, Hao J, Huang Y, Yu H. Clinical characteristics and antibiotic resistance profile of invasive MRSA infections in newborn inpatients: a retrospective multicenter study from China. BMC Pediatr 2023; 23:264. [PMID: 37231456 DOI: 10.1186/s12887-023-04084-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 05/19/2023] [Indexed: 05/27/2023] Open
Abstract
BACKGROUND Methicillin-resistant Staphylococcus aureus (MRSA) can cause invasive infections with significant mortality in neonates. This study aimed to analyze the clinical characteristics and antibiotic resistance profiles of invasive MRSA infections and determine risk factors associated with invasive MRSA infections in newborn inpatients. METHODS This multicenter retrospective study of inpatients from eleven hospitals in the Infectious Diseases Surveillance of Pediatrics (ISPED) group of China was performed over a two-year period (2018-2019). Statistical significance was calculated by applying the χ2 test or by Fisher's exact test in the case of small sample sizes. RESULTS A total 220 patients were included. Among included cases, 67 (30.45%) were invasive MRSA infections, including two deaths (2.99%), while 153 (69.55%) were noninvasive infections. The invasive infections of MRSA occurred at a median age of 8 days on admission, which was significantly younger compared to 19 days in noninvasive cases. Sepsis (86.6%) was the most common invasive infection, followed by pneumonia (7.4%), bone and joint infections (3.0%), central nervous system infection (1.5%), and peritonitis (1.5%). Congenital heart disease, low birth weight infant (<2500 g), but not preterm neonates, and bronchopulmonary dysplasia, were more commonly found in invasive MRSA infections. All these isolates were susceptible to vancomycin and linezolid and were resistant to penicillin. Additionally, 69.37% were resistant to erythromycin, 57.66% to clindamycin, 7.04% to levofloxacin, 4.62% to sulfamethoxazole-trimethoprim, 4.29% to minocycline, 1.33% to gentamicin, and 3.13% were intermediate to rifampin. CONCLUSION Low age at admission (≤8 days), congenital heart disease, and low birth weight were associated with invasive MRSA infections in neonates, and no isolates resistant to vancomycin and linezolid were found. Determining these risks in suspected neonates may help identify patients with imminent invasive infections who may require intensive monitoring and therapy.
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Affiliation(s)
- Xia Wu
- Department of Infectious Diseases, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, 201102, China
| | - Chuanqing Wang
- Department of Clinical Microbiology Laboratory, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, 201102, China
| | - Leiyan He
- Department of Clinical Microbiology Laboratory, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, 201102, China
| | - Hongmei Xu
- Department of Infectious Diseases, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Chunmei Jing
- Department of Clinical Laboratory, Children's Hospital of Chongqing Medical University, Chongqing, 400014, China
| | - Yinghu Chen
- Department of Infectious Diseases, Children's Hospital of Zhejiang University School of Medicine, Hangzhou, 310052, China
| | - Jikui Deng
- Department of Infectious Diseases, Shenzhen Children's Hospital, Shenzhen, 518038, China
| | - Aiwei Lin
- Department of Infectious Diseases, Qilu Children's Hospital of Shandong University, Jinan, 250022, China
| | - Huiling Deng
- Department of Infectious Diseases, Xi'an Children's Hospital, Xi'an, 710003, China
| | - Huijun Cai
- Department of Clinical Laboratory, Xi'an Children's Hospital, Xi'an, 710003, China
| | - Yiping Chen
- Department of Pediatric Infectious Diseases, Second Affiliated Hospital & Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Jinhong Yang
- Department of Clinical Laboratory, Second Affiliated Hospital & Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325027, China
| | - Ting Zhang
- Department of Gastroenterology and Infectious Diseases, Children's Hospital of Shanghai Jiaotong University School of Medicine, Shanghai, 200040, China
| | - Qing Cao
- Department of Infectious Diseases, Shanghai Children's Medical Center of Shanghai Jiaotong University School of Medicine, Shanghai, 200127, China
| | - Jianhua Hao
- Department of Infectious Diseases, Kaifeng Children's Hospital, Kaifeng, 475000, China
| | - Yuanyuan Huang
- Department of Pediatrics, Bethune First Hospital of Jilin University, Changchun, 130021, China
| | - Hui Yu
- Department of Infectious Diseases, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, 201102, China.
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Wu X, Wang C, He L, Xu H, Jing C, Chen Y, Lin A, Deng J, Cao Q, Deng H, Cai H, Chen Y, Yang J, Zhang T, Huang Y, Hao J, Yu H. Antimicrobial resistance profile of methicillin-resistant Staphylococcus aureus isolates in children reported from the ISPED surveillance of bacterial resistance, 2016-2021. Front Cell Infect Microbiol 2023; 13:1102779. [PMID: 36743309 PMCID: PMC9892648 DOI: 10.3389/fcimb.2023.1102779] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Accepted: 01/04/2023] [Indexed: 01/20/2023] Open
Abstract
Introduction Methicillin-resistant Staphylococcus aureus (MRSA) poses a serious threat to public health worldwide. In December 2015, the Infectious Disease Surveillance of Pediatrics (ISPED) program was organized to monitor bacterial epidemiology and resistance trends in children. Methods This retrospective study was conducted from January 2016-December 2021 on patients at eleven ISPED-group hospitals. Results From 2016-2021, a total of 13024 MRSA isolates were obtained from children. The most common age group for patients with MRSA infection was less than 3 years old, and newborns were an important group affected by MRSA infection. MRSA was most commonly isolated from the lower respiratory, an abscess, a secretion, or blood in neonates and from the lower respiratory, an abscess, or the upper respiratory in non-neonates. All isolates were susceptible to vancomycin and linezolid and resistant to penicillin; additionally, 76.88%, 54.97%, 22.30%, 5.67%, 5.14%, 3.63%, and 1.42% were resistant to erythromycin, clindamycin, tetracycline, levofloxacin, sulfamethoxazole-trimethoprim (TMP-SMX), gentamicin, and rifampin, respectively. Between 2016 and 2021, a significant increase was seen in the levofloxacin- and TMP-SMX-resistance rates (from 5.45% to 7.14% and from 4.67% to 6.50%, respectively) among MRSA isolates, along with a significant decrease in the rates of resistance to erythromycin (from 82.61% to 68.08%), clindamycin (from 60.95% to 46.82%), tetracycline (from 25.37% to 17.13%), gentamicin (from 4.53% to 2.82%), and rifampin (from 1.89% to 0.41%). Discussion The antibiotic-resistance rates varied among MRSA isolated from different sources. Because of the high antibiotic resistance rate to clindamycin, this antibiotic is not recommended for empirical treatment of MRSA infections, especially in osteomyelitis.
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Affiliation(s)
- Xia Wu
- Department of Infectious Diseases, Children’s Hospital of Fudan University, Shanghai, China
| | - Chuanqing Wang
- Department of Clinical Laboratory, Children’s Hospital of Fudan University, Shanghai, China
| | - Leiyan He
- Department of Clinical Laboratory, Children’s Hospital of Fudan University, Shanghai, China
| | - Hongmei Xu
- Department of Infectious Diseases, Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Chunmei Jing
- Department of Clinical Laboratory, Children’s Hospital of Chongqing Medical University, Chongqing, China
| | - Yinghu Chen
- Department of Infectious Diseases, Children’s Hospital of Zhejiang University School of Medicine, Hangzhou, China
| | - Aiwei Lin
- Department of Infectious Diseases, Qilu Children’s Hospital of Shandong University, Jinan, China
| | - Jikui Deng
- Department of Infectious Diseases, Shenzhen Children’s Hospital, Shenzhen, China
| | - Qing Cao
- Department of Infectious Diseases, Shanghai Children’s Medical Center of Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Huiling Deng
- Department of Infectious Diseases, Xi’an Children’s Hospital, Xi’an, China
| | - Huijun Cai
- Department of Clinical Laboratory, Xi’an Children’s Hospital, Xi’an, China
| | - Yiping Chen
- Department of Pediatric Infectious Diseases, Second Affiliated Hospital & Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jinhong Yang
- Department of Clinical Laboratory, Second Affiliated Hospital & Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, China
| | - Ting Zhang
- Department of Gastroenterology and Infectious Diseases, Children’s Hospital of Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yuanyuan Huang
- Department of Pediatrics, Bethune First Hospital of Jilin University, Changchun, China
| | - Jianhua Hao
- Department of Infectious Diseases, Kaifeng Children’s Hospital, Kaifeng, China
| | - Hui Yu
- Department of Infectious Diseases, Children’s Hospital of Fudan University, Shanghai, China,*Correspondence: Hui Yu,
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Zhao S, Wang Z, Lin Z, Wei G, Wen X, Li S, Yang X, Zhang Q, Jing C, Dai Y, Guo J, He Y. Drug Repurposing by Siderophore Conjugation: Synthesis and Biological Evaluation of Siderophore‐Methotrexate Conjugates as Antibiotics. Angew Chem Int Ed Engl 2022; 61:e202204139. [DOI: 10.1002/anie.202204139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Sheng Zhao
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research Innovative Drug Research Center School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P. R. China
| | - Zhi‐Peng Wang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research Innovative Drug Research Center School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P. R. China
- Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing 400714 P. R. China
| | - Zihua Lin
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research Innovative Drug Research Center School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P. R. China
| | - Guoxing Wei
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research Innovative Drug Research Center School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P. R. China
| | - Xumei Wen
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research Innovative Drug Research Center School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P. R. China
| | - Siyu Li
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research Innovative Drug Research Center School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P. R. China
| | - Xiaohong Yang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research Innovative Drug Research Center School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P. R. China
- Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences Chongqing 400714 P. R. China
| | - Qun Zhang
- Medicine Laboratory Children's Hospital of Chongqing Medical University Ministry of Education Key Laboratory of Child Development and Disorders 136 Zhongshan 2nd Rd Yuzhong, Chongqing 400014 P. R. China
| | - Chunmei Jing
- Medicine Laboratory Children's Hospital of Chongqing Medical University Ministry of Education Key Laboratory of Child Development and Disorders 136 Zhongshan 2nd Rd Yuzhong, Chongqing 400014 P. R. China
| | - Yuanwei Dai
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research Innovative Drug Research Center School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P. R. China
| | - Jian Guo
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research Innovative Drug Research Center School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P. R. China
| | - Yun He
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research Innovative Drug Research Center School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P. R. China
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Jiang J, Liu B, Liu Y, Jing C, You Z. SYNTHESES, CRYSTAL STRUCTURES AND UREASE INHIBITORY ACTIVITIES OF ZnII AND NiII COMPLEXES DERIVED FROM 4,4′-DIMETHOXY-2,2′-(PROPANE-1,3- DIYLDIIMINODIMETHYLENE)DIPHENOL. J STRUCT CHEM+ 2022. [DOI: 10.1134/s0022476622080182] [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: 11/23/2022]
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Zhao S, Wang ZP, Lin Z, Wei G, Wen X, Li S, Yang X, Zhang Q, Jing C, Dai Y, Guo J, He Y. Drug Repurposing by Siderophore Conjugation: Synthesis and Biological Evaluation of Siderophore‐Methotrexate Conjugates as Antibiotics. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Sheng Zhao
- Chongqing University School of Pharmaceutical Sciences CHINA
| | - Zhi-Peng Wang
- Chongqing University School of Pharmaceutical Sciences CHINA
| | - Zihua Lin
- Chongqing University School of Pharmaceutical Sciences CHINA
| | - Guoxing Wei
- Chongqing University School of Pharmaceutical Sciences CHINA
| | - Xumei Wen
- Chongqing University School of Pharmaceutical Sciences CHINA
| | - Siyu Li
- Chongqing University School of Pharmaceutical Sciences CHINA
| | - Xiaohong Yang
- Chongqing University School of Pharmaceutical Sciences CHINA
| | - Qun Zhang
- Chongqing Medical University Affiliated Children's Hospital Medicine Laboratory CHINA
| | - Chunmei Jing
- Chongqing Medical University Affiliated Children's Hospital Department of Clinical Laboratory CHINA
| | - Yuanwei Dai
- Chongqing University School of Pharmaceutical Sciences CHINA
| | - Jian Guo
- Chongqing University School of Pharmaceutical Sciences CHINA
| | - Yun He
- Chongqing University School of Pharmaceutical Sciences Daxuecheng South Road 401331 Chongqing CHINA
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Zhou M, Fu P, Fang C, Shang S, Hua C, Jing C, Xu H, Chen Y, Deng J, Zhang H, Zhang T, Wang S, Lin A, Huang W, Cao Q, Wang C, Yu H, Cao S, Deng H, Gao W, Hao J. Antimicrobial resistance of Haemophilus influenzae isolates from pediatric hospitals in Mainland China: Report from the ISPED program, 2017-2019. Indian J Med Microbiol 2021; 39:434-438. [PMID: 34556347 DOI: 10.1016/j.ijmmb.2021.09.001] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 07/10/2021] [Accepted: 09/03/2021] [Indexed: 10/20/2022]
Abstract
PURPOSE This study set out to determine the antimicrobial resistance trends of Haemophilus influenzae isolates from pediatric hospitals in Mainland China, which would provide basis for clinical treatment. METHODS The Infectious Disease Surveillance of Pediatrics (ISPED) collaboration group conducted this study. H. influenzae strains isolated from nine pediatric hospitals in Mainland China were included. Disk diffusion method was used for antimicrobial susceptibility test. Cefinase disc was used for detection of β-lactamase. RESULTS In total, 13810 H. influenzae isolates were included during 2017-2019: 93.17% of which were from respiratory tract specimens, 4.63% from vaginal swabs, 1.10% from secretion, and 1.10% from others. Of all strains, 63.32% isolates produced β-lactamase; 8.22% isolates were β-lactamase-negative and ampicillin-resistant (BLNAR). The resistance to sulfamethoxazole-trimethoprim was 70.98%, followed by resistance to ampicillin (69.37%), cefuroxime (51.35%), ampicillin-sulbactam (38.82%), azithromycin (38.21%), amoxicillin-clavulanate (35.28%). More than 90% of H. influenzae isolates were susceptible to ceftriaxone, cefotaxime, meropenem, levofloxacin and chloramphenicol. The resistance rate of ampicillin and azithromycin in H. influenzae showed an increasing trend through the years. Statistically significant differences in antibiotic-resistance rates of all the antibiotics except chloramphenicol were found in different regions. The major Multi-Drug Resistance pattern was resistant to β-lactams, macrolides, and sulfonamides. CONCLUSIONS There is a rising trend of resistance rate of ampicillin and azithromycin in H. influenzae. Antimicrobial resistance of H. influenzae deserves our ongoing attention. Third-generation cephalosporin could be the preferred treatment option of infections caused by ampicillin-resistant H. influenzae.
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Affiliation(s)
- Mingming Zhou
- Department of Clinical Laboratory, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, 310052, PR China
| | - Pan Fu
- Department of Clinical Laboratory, Children's Hospital of Fudan University, Shanghai, 201102, PR China
| | - Chao Fang
- Department of Clinical Laboratory, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, 310052, PR China
| | - Shiqiang Shang
- Department of Clinical Laboratory, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, 310052, PR China.
| | - Chunzhen Hua
- Department of Infectious Disease, The Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou, 310003, PR China.
| | - Chunmei Jing
- Department of Clinical Laboratory, Children's Hospital of Chongqing Medical University, Chongqing, 400014, PR China
| | - Hongmei Xu
- Department of Infectious Diseases, Children's Hospital of Chongqing Medical University, Chongqing, 400014, PR China
| | - Yunsheng Chen
- Department of Clinical Laboratory, Shenzhen Children's Hospital, Shenzhen, 518038, PR China
| | - Jikui Deng
- Department of Infectious Diseases, Shenzhen Children's Hospital, Shenzhen, 518038, PR China
| | - Hong Zhang
- Department of Clinical Laboratory, Children's Hospital of Shanghai Jiaotong University, Shanghai, 200040, PR China
| | - Ting Zhang
- Department of Infectious Diseases, Children's Hospital of Shanghai Jiaotong University, Shanghai, 200040, PR China
| | - Shifu Wang
- Department of Clinical Laboratory, Qilu Children's Hospital of Shandong University, Jinan, 250022, PR China
| | - Aiwei Lin
- Department of Infectious Diseases, Qilu Children's Hospital of Shandong University, Jinan, 250022, PR China
| | - Weichun Huang
- Department of Clinical Laboratory, Shanghai Children's Medical Center, Shanghai, 200127, PR China
| | - Qing Cao
- Department of Infectious Diseases, Shanghai Children's Medical Center, Shanghai, 200127, PR China
| | - Chuanqing Wang
- Department of Clinical Laboratory, Children's Hospital of Fudan University, Shanghai, 201102, PR China
| | - Hui Yu
- Department of Infectious Diseases, Children's Hospital of Fudan University, Shanghai, 201102, PR China
| | - Sancheng Cao
- Department of Clinical Laboratory, Xi'an Children's Hospital, Xi'an, 710043, PR China
| | - Huiling Deng
- Department of Infectious Diseases, Xi'an Children's Hospital, Xi'an, 710043, PR China
| | - Wei Gao
- Department of Clinical Laboratory, Kaifeng Children's Hospital, Kaifeng, 475099, PR China
| | - Jianhua Hao
- Department of Infectious Diseases, Kaifeng Children's Hospital, Kaifeng, 475099, PR China
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Wu M, Wang X, Lin X, Fu Y, Chen H, Guan X, Huang W, Chen Y, Zhang L, Jing C, Wei J, Tian J, Zhang X. Cut-offs for defining uterine prolapse using transperineal ultrasound in Chinese women: prospective multicenter study. Ultrasound Obstet Gynecol 2021; 58:127-132. [PMID: 33094536 DOI: 10.1002/uog.23524] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 10/05/2020] [Accepted: 10/12/2020] [Indexed: 06/11/2023]
Abstract
OBJECTIVE Transperineal ultrasound is a simple and highly repeatable method that has been used increasingly in the quantification of pelvic organ prolapse, but abnormal uterine descent on ultrasound in Chinese women is still poorly defined. We aimed to determine the optimal cut-off to define abnormal uterine descent on transperineal ultrasound in Chinese women. METHODS This prospective multicenter study recruited women who were examined in tertiary-level gynecological centers, due to symptoms of lower urinary tract and/or pelvic floor dysfunction, between February 2017 and September 2018. All recruited women underwent a standardized interview, pelvic organ prolapse quantification (POP-Q) examination, and four-dimensional transperineal ultrasound examination. On ultrasound, uterine descent was measured relative to the posteroinferior margin of the symphysis pubis during maximum Valsalva maneuver. The optimal cut-off value for definition of abnormal uterine descent was selected as the value with the highest Youden index and the diagnostic performance of this cut-off for the prediction of prolapse symptoms and POP-Q stage was assessed and compared by means of the area under the receiver-operating-characteristics curve (AUC). RESULTS In total, 538 Chinese women, with a mean age of 39.4 (range, 18-81) years, were enrolled into the study. Both uterine descent on transperineal ultrasound (P < 0.001) and POP-Q stage (P < 0.001) were associated strongly with presence of prolapse symptoms. Uterine descent on ultrasound was associated significantly with POP-Q stage for apical compartment prolapse (P < 0.001). The optimal cut-off value for the definition of abnormal uterine descent on transperineal ultrasound during maximum Valsalva maneuver in the prediction of prolapse symptoms was 4.79 mm above the symphysis pubis (AUC, 0.75 (95% CI, 0.71-0.78)), while the optimal cut-off values in the prediction of prolapse of POP-Q Stage ≥ 1 and POP-Q Stage ≥ 2 were 6.63 mm above the symphysis pubis (AUC, 0.83 (95% CI, 0.80-0.86)) and 8.42 mm below the symphysis pubis (AUC, 0.85 (95% CI, 0.82-0.88)), respectively. CONCLUSIONS The optimal cut-off value to define abnormal uterine descent on transperineal ultrasound during maximum Valsalva maneuver for the prediction of prolapse symptoms in this population of Chinese women was 4.79 mm above the symphysis pubis, close to that for predicting apical compartment prolapse of POP-Q Stage ≥ 1 (6.63 mm above the symphysis pubis). These are somewhat different from values described previously in mainly Caucasian populations. Ethnic differences should be taken into account in the evaluation of pelvic organ prolapse using transperineal ultrasound. © 2020 International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- M Wu
- Department of Ultrasound, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - X Wang
- Department of Ultrasound, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
| | - X Lin
- Department of Ultrasound, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, China
| | - Y Fu
- Department of Ultrasound, Hunan Provincial Maternal and Child Health Care Hospital, Changsha, Hunan Province, China
| | - H Chen
- Department of Ultrasound, Zhongshan People's Hospital, Zhongshan, Guangdong Province, China
| | - X Guan
- Ultrasound Diagnosis Center, Shaanxi Provincial People's Hospital, The Third Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi Province, China
| | - W Huang
- Department of Ultrasound, The First People's Hospital of Foshan, Foshan, Guangdong Province, China
| | - Y Chen
- Department of Medical Ultrasound, The Fourth Hospital of Shijiazhuang, Shijiazhuang, Hebei Province, China
| | - L Zhang
- Department of Ultrasound Diagnosis, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi Province, China
| | - C Jing
- Department of Ultrasound, Dalian Maternal and Child Health Care Hospital, Dalian, Liaoning Province, China
| | - J Wei
- Department of Ultrasound, Jiujiang City Maternal and Child Health Care Hospital, Jiujiang, Jiangxi Province, China
| | - J Tian
- Department of Ultrasound, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
| | - X Zhang
- Department of Ultrasound, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong Province, China
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Yu HJ, Jing C, Xiao N, Zang XM, Zhang CY, Zhang X, Qu YN, Li Y, Tan QW. Structural difference analysis of adult's intestinal flora basing on the 16S rDNA gene sequencing technology. Eur Rev Med Pharmacol Sci 2021; 24:12983-12992. [PMID: 33378065 DOI: 10.26355/eurrev_202012_24203] [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] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Through 16S rDNA technology, we aimed at separating adults aging 20-50 years old into a few groups and processing the high-throughput sequencing analysis, in order to explore the features and differences of intestinal flora in each age group in a microcosmic perspective. PATIENTS AND METHODS 120 stool specimens were collected strictly in accordance with acceptance criteria and exclusion criteria. 49 subjects aging 20-29 years old (Group AGE1), 51 subjects aging 30-39 years old (Group AGE2), and 20 subjects aging 40-49 years old (Group AGE3) were divided into 3 groups. Bacteria DNA from fresh stool specimens of 3 groups were abstracted. Illumina MiSeq high-throughput sequencing platform was applied to process 16S rDNA sequencing in Area 338F_806R for intestinal flora detection. I-Sanger Bio-cloud platform was applied for the analysis of intestinal flora structure changes in phylum level and genus level. RESULTS Among the age of 20-50, with older age, the abundance of intestinal flora decreased among healthy adults more than 40 years old. In addition, the diversity and sample dispersion of intestinal flora is significantly different from people among 20-40 years old. The decrease ratio of Firmicutes/Bacteroidetes indicated that as the age grows, glucose tolerance might decrease. Comparing with people among 20-40 years old, the amount of Bifidobacterium and Eubacterium in people over 40 years old have significantly decreased. The decrease of Bifidobacterium and Eubacterium may increase the risks of cognitive impairment and lower the anti-inflammation and anti-cancer efficacy in human body, respectively. Subdoligranulum relates to poor metabolism and chronic inflammation and it happens more in people aged over 40 than young people who are among 20-40 years old. CONCLUSIONS There are differences in the intestinal flora of healthy adults aged 20-50. Effective intervention of the intestinal flora may play a role in delaying aging and preventing diseases.
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Affiliation(s)
- H-J Yu
- College of Acupuncture and Massage, Shandong University of Traditional Chinese Medicine, Jinan, China.
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Hao G, Liu K, Halbert JD, Chen H, Wu J, Jing C. Dietary sodium and potassium and risk of diabetes: A prospective study using data from the China Health and Nutrition Survey. Diabetes Metab 2019; 46:377-383. [PMID: 31838058 DOI: 10.1016/j.diabet.2019.12.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 11/24/2019] [Accepted: 12/01/2019] [Indexed: 10/25/2022]
Abstract
AIMS Dietary sodium and potassium intakes are well-known risk factors for cardiovascular outcomes. However, the associations between dietary sodium and potassium and diabetes are still controversial. Our study aimed to examine whether dietary sodium, potassium and the sodium-potassium ratio are associated with the risk of diabetes, based on a large sample of Chinese adults. METHODS The study data were from the 2004-2009 China Health and Nutrition Survey (CHNS), and 5867 participants were eligible for analysis. Sodium and potassium intakes were estimated based on three consecutive 24-h recalls at an individual level combined with a food inventory at a household level performed over the same 3-day period. Diabetes was defined as fasting glucose ≥7.0mmol/L (≥126mg/dL), HbA1c ≥6.5% or use of antidiabetic drugs. RESULTS Over a mean follow-up of 4.7 years, there were 611 (10.4%) incident cases of diabetes. Participants in the higher quartiles (Q3 and Q4) of sodium intake had significantly higher risks of diabetes than those with the lowest sodium intake [Q3, RR: 1.41, 95% CI: 1.06-1.86 and Q4, RR: 1.35, 95% CI: 1.02-1.80; P<0.001 for trend]. In addition, high sodium intakes were significantly associated with levels of fasting glucose and HbA1c (P<0.05 for trend), with similar associations also found with sodium-potassium ratios (P<0.05 for trend), but not for potassium intakes. CONCLUSION This study found that higher sodium intakes and sodium-potassium ratios were significantly associated with a higher risk of diabetes. Further clinical research is now necessary to confirm these results.
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Affiliation(s)
- G Hao
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, China.
| | - K Liu
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, China
| | - J D Halbert
- Georgia Prevention Institute, Department of Population Health Sciences, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - H Chen
- Guangzhou Center for Disease Control and Prevention, Guangzhou, China
| | - J Wu
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, China
| | - C Jing
- Department of Epidemiology, School of Medicine, Jinan University, Guangzhou, China.
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Jing C, Zhang X, Song Z, Zheng Y, Yin Y. Progranulin Mediates Proinflammatory Responses in Systemic Lupus Erythematosus: Implications for the Pathogenesis of Systemic Lupus Erythematosus. J Interferon Cytokine Res 2019; 40:33-42. [PMID: 31804874 DOI: 10.1089/jir.2019.0047] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is an autoimmune disease caused by the disorders of immune regulation but its pathogenesis is poorly understood. Progranulin (PGRN) is an immunomodulatory protein that is upregulated in SLE patients. However, the factors involved in regulating the pathogenesis of SLE by PGRN are largely unknown. We sought to investigate the role and molecular mechanisms of PGRN in SLE to develop a novel therapeutic target. We used an animal model of SLE that was induced in PGRN-deficient and normal wild type (WT) mice using pristane. PGRN concentrations were measured in SLE and the impact of PGRN deficiency was examined by measuring tissue injury and immune responses of T cells (Th1, Th2, Th17, and Treg) and B cells. SLE patients and mice showed elevated PGRN levels. Compared with WT SLE mice, inflammatory cell infiltration, tissue edema, and necrosis were alleviated in PGRN-/- SLE mice and the levels of serum chemistry markers of tissue damage and the presence of anti-double-stranded DNA and anti-ribosomal protein P0 antibodies were all significantly decreased. We further discovered that PGRN deficiency could disturb the immune responses of T cell (Th1, Th2, Th17, and Treg) and B cell responses, leading to the decrease of inflammatory cytokines including interferon-γ and interleukin-17A and increased levels of regulatory B cells. PGRN plays a proinflammatory role in the development of SLE partially through promoting the production of autoantibodies and enhancing Th1 and Th17 cell responses. This may provide new therapeutic options for patients with SLE.
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Affiliation(s)
- Chunmei Jing
- Department of Clinical Laboratory, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Xuemei Zhang
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China
| | - Zhixin Song
- Department of Clinical Laboratory, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Yuqiang Zheng
- Department of Clinical Laboratory, Ministry of Education Key Laboratory of Child Development and Disorders, National Clinical Research Center for Child Health and Disorders, China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing Key Laboratory of Pediatrics, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Yibing Yin
- Key Laboratory of Diagnostic Medicine Designated by the Ministry of Education, Chongqing Medical University, Chongqing, China
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Jing C, Bai XH, Jing YZ. [Efficacy of exercise rehabilitation in patients with knee osteoarthritis]. Zhonghua Yi Xue Za Zhi 2019; 99:3255-3259. [PMID: 31694122 DOI: 10.3760/cma.j.issn.0376-2491.2019.41.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore whether exercise could influence outcomes and improve life quality of patients with knee osteoarthritis. Methods: This study included 210 patients diagnosed with knee osteoarthritis from October to December 2018 in Shijiazhuang Derui Exercise Rehabilitation Medical Center. These patients were divided into two groups with random number table: experiment and control group. Patients in experimental group got exercise rehabilitation training and routine therapy,but patients in control group got routine treatment only that included physical therapy and non-steroidal anti-inflammatory drugs (NSAIDs). We applied different kinds of measure to follow-up these patients,which included Lysholm scale, the Western Ontario and McMaster Osteoarthritis Index (WOMAC), SF-36 life quality questionnaire, and knee range of motion.The degree of pain and symptoms and the knee function and the quality of life in the two groups were recorded too. Paired sample t test was used to compare the data between the two groups. Results: There were 105 patients in each group, but 13 cases (12.4%) in experimental group and 6 patients (5.7%) in control group were lost,respectively.All the patients were followed up for (12.0±2.3) weeks. There was no significant differences in age, body mass index, gender between the two groups. At the final follow-up, the WOMAC score in the experiment group was 84.4±6.8, and it was 108.3±1.7 in the control group (t=-4.71, P<0.05);the Lysholm score of the experimental group was 65.5±4.7, and it was 41.2±1.4 in the control group (t=7.29, P<0.05); the knee range of motion in the experiment group and control group was 121°±7° and 114°±3°, respectively (t=1.83, P<0.05); the SF-36 score in the two groups was 90.0±2.8 and 75.6±1.5, respectively (t=6.15, P<0.05). Conclusion: Exercise rehabilitation plus routine therapy for patients with knee osteoarthritis can effectively improve outcome, promote functional recovery and improve quality of life.
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Affiliation(s)
- C Jing
- Hebei Province Institute of Sports Science, Shijiazhuang 050011, China
| | - X H Bai
- Hebei Normal University Sports Department, Shijiazhuang 050000, China
| | - Y Z Jing
- Shijiazhuang Derui Sports Rehabilitation Medical Center, Shijiazhuang 050011, China
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Zhan Z, Xu X, Gu Z, Meng J, Wufuer X, Wang M, Huang M, Chen J, Jing C, Xiong Z, Zeng M, Liao M, Zhang J. Molecular epidemiology and antimicrobial resistance of invasive non-typhoidal Salmonella in China, 2007-2016. Infect Drug Resist 2019; 12:2885-2897. [PMID: 31571942 PMCID: PMC6750164 DOI: 10.2147/idr.s210961] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [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: 04/03/2019] [Accepted: 08/08/2019] [Indexed: 01/28/2023] Open
Abstract
Purpose Human infections caused by invasive non-typhoidal Salmonella (iNTS) are highly prevalent worldwide. However, data for such infections in China are scarce. This study reports the epidemiology of iNTS in China. Methods INTS isolates were recovered from blood and other clinical specimens collected during 2007-2016 across five provinces (Shanghai, Xinjiang, Fujian, Guangxi, and Chongqing) in China. Antimicrobial susceptibility was performed using the agar dilution method and molecular epidemiology was performed using standard microbiological techniques. Results A total of 178 iNTS isolates were recovered from approximately 9700 patient specimens during 2007-2016. The predominant serovars were Salmonella Enteritidis (57/178, 32%), Salmonella Choleraesuis (47/178, 26.4%), and Salmonella Typhimurium (24/178, 13.5%). Up to 50 isolates (28.1%) were from patients who were ≤1 year of age, while 28 (15.7%) were from patients who were ≥60 years. Among these isolates, high rates of resistance to nalidixic acid (114/178, 64%), sulfisoxazole (59%), ciprofloxacin (15.2%), and cefotaxime (8.4%) were found. Moreover, 53.4% (95/178) exhibited multidrug resistance, and 3.9% (7/178) showed co-resistance to third-generation cephalosporins and ciprofloxacin. Steadily increasing numbers of nalidixic acid, cefotaxime, and ciprofloxacin-resistant isolates, but decreasing numbers of multidrug resistance isolates were detected during the study period. Detection of quinolone genes in 114 nalidixic acid-resistant isolates showed that 58.3% (67/114) harbored plasmid-mediated quinolone resistance (PMQR) genes [aac(6´)-Ib-cr, qnrA, qnrB, oqxAB, qepA, qnrS, and qnrD] and 98.2% (112/114) exhibited mutations in quinolone resistance determining regions [gyrA, parC, and parE]. Furthermore, we detected beta-lactamases genes in the ceftriaxone-resistant isolates. The most common were blaTEM-1 (93.3%), followed by blaCTX-M-55 (40%), blaCMY-2 (33.3%), and blaOXA-1 (33.3%). Finally, a range of pulsed-field gel electrophoresis patterns were detected among the Salmonella Enteritidis and Salmonella Typhimurium isolates. Conclusion High rates of multidrug resistance and steadily increasing cefotaxime and ciprofloxacin-resistant iNTS could pose a significant challenge for the effective treatment of salmonellosis in China.
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Affiliation(s)
- Zeqiang Zhan
- National and Regional Joint Engineering Laboratory for Medicament of Zoonoses Prevention and Control, Key Laboratory of Zoonoses, Ministry of Agriculture, Key Laboratory of Zoonoses Prevention and Control of Guangdong Province, Animal Infectious Diseases Laboratory, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Xuebin Xu
- Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
| | - Zhen Gu
- Emerging Infections Program China Office, Beijing, 102206, China
| | - Jianghong Meng
- Department of Food Science and Nutrition, University of Maryland, College Park, Maryland 20742, USA
| | - Xiayidan Wufuer
- Xinjiang Uygur Autonomous Region Center for Disease Control and Prevention, Urumchi 830001, China
| | - Mingliu Wang
- Guangxi Zhuang Autonomous Region Disease Prevention and Control Center, Nanning 530028, China
| | - Meilian Huang
- Xiamen City Children's Hospital, Xiamen 361006, China
| | - Jianhui Chen
- Fujian Provincial Center for Disease Control and Prevention, Fuzhou 350001, China
| | - Chunmei Jing
- Chongqing City Children's Hospital, Chongqing 400014, China
| | - Zhiying Xiong
- National and Regional Joint Engineering Laboratory for Medicament of Zoonoses Prevention and Control, Key Laboratory of Zoonoses, Ministry of Agriculture, Key Laboratory of Zoonoses Prevention and Control of Guangdong Province, Animal Infectious Diseases Laboratory, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Mei Zeng
- Department of Infectious Diseases, Children's Hospital of Fudan University, Shanghai 200336, China
| | - Ming Liao
- National and Regional Joint Engineering Laboratory for Medicament of Zoonoses Prevention and Control, Key Laboratory of Zoonoses, Ministry of Agriculture, Key Laboratory of Zoonoses Prevention and Control of Guangdong Province, Animal Infectious Diseases Laboratory, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
| | - Jianmin Zhang
- National and Regional Joint Engineering Laboratory for Medicament of Zoonoses Prevention and Control, Key Laboratory of Zoonoses, Ministry of Agriculture, Key Laboratory of Zoonoses Prevention and Control of Guangdong Province, Animal Infectious Diseases Laboratory, College of Veterinary Medicine, South China Agricultural University, Guangzhou, 510642, China
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Tan J, Kan A, Jing C, Lo J, Hitkari J, Taylor B, Nakhuda G. GnRH triggering may improve euploidy and live birth rate in hyper-responders. Fertil Steril 2018. [DOI: 10.1016/j.fertnstert.2018.07.945] [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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Gao Q, Ha G, Jing C, Antipov SP, Power JG, Conde M, Gai W, Chen H, Shi J, Wisniewski EE, Doran DS, Liu W, Whiteford CE, Zholents A, Piot P, Baturin SS. Observation of High Transformer Ratio of Shaped Bunch Generated by an Emittance-Exchange Beam Line. Phys Rev Lett 2018; 120:114801. [PMID: 29601751 DOI: 10.1103/physrevlett.120.114801] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Indexed: 06/08/2023]
Abstract
Collinear wakefield acceleration has been long established as a method capable of generating ultrahigh acceleration gradients. Because of the success on this front, recently, more efforts have shifted towards developing methods to raise the transformer ratio (TR). This figure of merit is defined as the ratio of the peak acceleration field behind the drive bunch to the peak deceleration field inside the drive bunch. TR is always less than 2 for temporally symmetric drive bunch distributions and therefore recent efforts have focused on generating asymmetric distributions to overcome this limitation. In this Letter, we report on using the emittance-exchange method to generate a shaped drive bunch to experimentally demonstrate a TR≈5 in a dielectric wakefield accelerator.
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Affiliation(s)
- Q Gao
- Department of Engineering Physics, Tsinghua University Beijing, Beijing 100084, People's Repubic of China
- Key Laboratory of Particle and Radiation Imaging, Tsinghua University, Ministry of Education, Beijing 100084, People's Repubic of China
| | - G Ha
- POSTECH, Pohang, Gyeongbuk 37673, Republic Of Korea
| | - C Jing
- Euclid Techlabs LLC, Bolingbrook, Illinois 60440, USA
| | - S P Antipov
- Euclid Techlabs LLC, Bolingbrook, Illinois 60440, USA
| | - J G Power
- Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - M Conde
- Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - W Gai
- Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - H Chen
- Department of Engineering Physics, Tsinghua University Beijing, Beijing 100084, People's Repubic of China
| | - J Shi
- Department of Engineering Physics, Tsinghua University Beijing, Beijing 100084, People's Repubic of China
| | - E E Wisniewski
- Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - D S Doran
- Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - W Liu
- Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - C E Whiteford
- Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - A Zholents
- Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - P Piot
- Department of Physics, Northern Illinois University, DeKalb, Illinois 60115, USA
- Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
| | - S S Baturin
- The University of Chicago, PSD, Enrico Fermi Institute, 5640 S Ellis Avenue, Chicago, Illinois 60637, USA
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Jing C, Landsberger S, Li YL. The application of illite supported nanoscale zero valent iron for the treatment of uranium contaminated groundwater. J Environ Radioact 2017; 175-176:1-6. [PMID: 28407570 DOI: 10.1016/j.jenvrad.2017.04.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 12/04/2016] [Revised: 04/06/2017] [Accepted: 04/06/2017] [Indexed: 06/07/2023]
Abstract
In this study, nanoscale zero valent iron I-NZVI was investigated as a remediation strategy for uranium contaminated groundwater from the former Cimarron Fuel Fabrication Site in Oklahoma, USA. The 1 L batch-treatment system was applied in the study. The result shows that 99.9% of uranium in groundwater was removed by I-NZVI within 2 h. Uranium concentration in the groundwater stayed around 27 μg/L, and there was no sign of uranium release into groundwater after seven days of reaction time. Meanwhile the release of iron was significantly decreased compared to NZVI which can reduce the treatment impact on the water environment. To study the influence of background pH of the treatment system on removal efficiency of uranium, the groundwater was adjusted from pH 2-10 before the addition of I-NZVI. The pH of the groundwater was from 2.1 to 10.7 after treatment. The removal efficiency of uranium achieved a maximum in neutral pH of groundwater. The desorption of uranium on the residual solid phase after treatment was investigated in order to discuss the stability of uranium on residual solids. After 2 h of leaching, 0.07% of the total uranium on residual solid phase was leached out in a HNO3 leaching solution with a pH of 4.03. The concentration of uranium in the acid leachate was under 3.2 μg/L which is below the EPA's maximum contaminant level of 30 μg/L. Otherwise, the concentration of uranium was negligible in distilled water leaching solution (pH = 6.44) and NaOH leaching solution (pH = 8.52). A desorption study shows that an acceptable amount of uranium on the residuals can be released into water system under strong acid conditions in short terms. For long term disposal management of the residual solids, the leachate needs to be monitored and treated before discharge into a hazardous landfill or the water system. For the first time, I-NZVI was applied for the treatment of uranium contaminated groundwater. These results provide proof that I-NZVI has improved performance compared to NZVI and is a promising technology for the restoration of complex uranium contaminated water resources.
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Affiliation(s)
- C Jing
- Nuclear Engineering Teaching Lab, University of Texas at Austin, 10,100 Burnet Road, Austin, TX 78712, USA; School of Environmental Studies, China University of Geosciences, 388 Lumo Road, Wuhan, Hubei 430074, China
| | - S Landsberger
- Nuclear Engineering Teaching Lab, University of Texas at Austin, 10,100 Burnet Road, Austin, TX 78712, USA; Enviroklean Product Development Inc., 9227 Thomasville Dr. Houston, TX 77064, USA.
| | - Y L Li
- School of Environmental Studies, China University of Geosciences, 388 Lumo Road, Wuhan, Hubei 430074, China
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Ha G, Cho MH, Namkung W, Power JG, Doran DS, Wisniewski EE, Conde M, Gai W, Liu W, Whiteford C, Gao Q, Kim KJ, Zholents A, Sun YE, Jing C, Piot P. Precision Control of the Electron Longitudinal Bunch Shape Using an Emittance-Exchange Beam Line. Phys Rev Lett 2017; 118:104801. [PMID: 28339245 DOI: 10.1103/physrevlett.118.104801] [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] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Indexed: 06/06/2023]
Abstract
We report on the experimental generation of relativistic electron bunches with a tunable longitudinal bunch shape. A longitudinal bunch-shaping (LBS) beam line, consisting of a transverse mask followed by a transverse-to-longitudinal emittance exchange (EEX) beam line, is used to tailor the longitudinal bunch shape (or current profile) of the electron bunch. The mask shapes the bunch's horizontal profile, and the EEX beam line converts it to a corresponding longitudinal profile. The Argonne wakefield accelerator rf photoinjector delivers electron bunches into a LBS beam line to generate a variety of longitudinal bunch shapes. The quality of the longitudinal bunch shape is limited by various perturbations in the exchange process. We develop a simple method, based on the incident slope of the bunch, to significantly suppress the perturbations.
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Affiliation(s)
- G Ha
- POSTECH, Pohang, Gyeongbuk 37673, Republic of Korea
| | - M H Cho
- POSTECH, Pohang, Gyeongbuk 37673, Republic of Korea
| | - W Namkung
- POSTECH, Pohang, Gyeongbuk 37673, Republic of Korea
| | - J G Power
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - D S Doran
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - E E Wisniewski
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - M Conde
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - W Gai
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - W Liu
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - C Whiteford
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Q Gao
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - K-J Kim
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - A Zholents
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Y-E Sun
- Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - C Jing
- Euclid TechLabs, Solon, Ohio 44139, USA
| | - P Piot
- Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
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20
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Jing C, Li YL, Landsberger S. Review of soluble uranium removal by nanoscale zero valent iron. J Environ Radioact 2016; 164:65-72. [PMID: 27423075 DOI: 10.1016/j.jenvrad.2016.06.027] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [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: 03/24/2016] [Revised: 06/11/2016] [Accepted: 06/12/2016] [Indexed: 06/06/2023]
Abstract
Uranium (U) has been released to surface soil and groundwater through military and industrial activities. Soluble forms of U transferred to drinking water sources and food supplements can potentially threaten humans and the biosphere due to its chemical toxicity and radioactivity. The immobilization of aqueous U onto iron-based minerals is one of the most vital geochemical processes controlling the transport of U. As a consequence, much research has been focused on the use of iron-based materials for the treatment of U contaminated waters. One material currently being tested is nanoscale zero-valent iron (nZVI). However, understanding the removal mechanism of U onto nZVI is crucial to develop new technologies for contaminated water resources. This review article aims to provide information on the removal mechanism of U onto nZVI under different conditions (pH, U concentration, solution ion strength, humic acid, presence of O2 and CO2, microorganism effect) pertinent to environmental and engineered systems, and to provide risk or performance assessment results with the stability of nZVI products after removal of U in environmental restoration.
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Affiliation(s)
- C Jing
- School of Environmental Studies, China University of Geosciences, 388 Lumo Road, Wuhan, Hubei 430074, China; Nuclear Engineering Teaching Lab, University of Texas at Austin, 10100 Burnet Road, Austin, TX 78712, USA
| | - Y L Li
- School of Environmental Studies, China University of Geosciences, 388 Lumo Road, Wuhan, Hubei 430074, China
| | - S Landsberger
- Nuclear Engineering Teaching Lab, University of Texas at Austin, 10100 Burnet Road, Austin, TX 78712, USA.
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21
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Wang D, Antipov S, Jing C, Power JG, Conde M, Wisniewski E, Liu W, Qiu J, Ha G, Dolgashev V, Tang C, Gai W. Interaction of an Ultrarelativistic Electron Bunch Train with a W-Band Accelerating Structure: High Power and High Gradient. Phys Rev Lett 2016; 116:054801. [PMID: 26894715 DOI: 10.1103/physrevlett.116.054801] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Indexed: 06/05/2023]
Abstract
Electron beam interaction with high frequency structures (beyond microwave regime) has a great impact on future high energy frontier machines. We report on the generation of multimegawatt pulsed rf power at 91 GHz in a planar metallic accelerating structure driven by an ultrarelativistic electron bunch train. This slow-wave wakefield device can also be used for high gradient acceleration of electrons with a stable rf phase and amplitude which are controlled by manipulation of the bunch train. To achieve precise control of the rf pulse properties, a two-beam wakefield interferometry method was developed in which the rf pulse, due to the interference of the wakefields from the two bunches, was measured as a function of bunch separation. Measurements of the energy change of a trailing electron bunch as a function of the bunch separation confirmed the interferometry method.
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Affiliation(s)
- D Wang
- High Energy Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
- Tsinghua University, Beijing, 100084, China
| | - S Antipov
- High Energy Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
- Euclid Techlabs LLC, Solon, Ohio 44139, USA
| | - C Jing
- High Energy Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
- Euclid Techlabs LLC, Solon, Ohio 44139, USA
| | - J G Power
- High Energy Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - M Conde
- High Energy Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - E Wisniewski
- High Energy Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - W Liu
- High Energy Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - J Qiu
- High Energy Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
- Euclid Techlabs LLC, Solon, Ohio 44139, USA
| | - G Ha
- High Energy Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - V Dolgashev
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - C Tang
- Tsinghua University, Beijing, 100084, China
| | - W Gai
- High Energy Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
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22
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Abstract
We conducted a case-control study to investigate the association between the functional IL-1β+3954 (C/T), IL-6-174 (G/C), IL-10-1082 (G/A), and IL-10-819C/T genetic polymorphisms and risk of recurrent oral ulceration (ROU) in a Chinese population. Polymorphisms of IL-1β+3954C/T, IL-6-174G/C, IL-10-1082A/G and IL-10-819C/T were assessed by polymerase chain reaction-restriction fragment length polymorphism. The genotype distributions of the IL-1β+3954 C/T and IL-10-819C/T were in Hardy-Weinberg equilibrium in the control group. Conditional logistic regression analyses showed that subjects carrying the IL-1β+3954CC and IL-10-1082AA genotypes had a significantly increased risk of ROU, with adjusted ORs (95%CI) of 2.86 (1.37-6.33) and 1.72 (1.02-2.89), respectively. In summary, we found that IL-1β+3954C/T and IL-10-1082A/G polymorphisms are associated with an increased risk of ROU.
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Affiliation(s)
- C Jing
- Department of Stomatology, The First Affiliated Hospital of PLA General Hospital, Beijing, China
| | - J-Q Zhang
- Department of Stomatology, The First Affiliated Hospital of PLA General Hospital, Beijing, China
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23
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Yu B, Zhao S, Hu D, Ambegaonakr BM, DYSIS-China Study Investigators, Jia Er BA, Guiwen C, Buxing C, Hong C, Jin C, Jing C, Liefeng C, Min C, Qiong C, Shaoliang C, Tielong C, Xiaofei C, Xiaohong C, You C, Guoli C, Mei C, Hongliang C, Qin C, Shiwei C, Yong C, Shudong D, Henghua D, Xiaomei D, Yirong D, Xiaoyan D, Birong D, Yumei D, Yugang D, Ping D, Lei D, Limei F, Ningyuan F, Lixia F, Lie F, Jun G, GeWeihong, Hongmin G, Minxia G, Qinghua H, Fengchang H, Dayi H, Lingzhi H, Xueqiang H, Yaojun H, Yiming H, Zhiping H, Fei H, Qi H, Dejia H, Gewen H, Hongman H, Liming H, Qiong H, Ruowen H, Taifu H, Bin J, Kai J, Hui J, Huigen J, Jinsong K, Bao L, Chengjiang L, Hongjuan L, Jun(Xinjiang) L, Jun(Jiangsu) L, Nanfang L, Qifu L, Qiang L, Xin L, Xueyou L, Yanbing L, Yanping L, Yansheng L, Yong L, Yuling L, Zhanquan L, Zhengfang L, Li L, Yongxue L, Zerong L, Yuhua L, Fan L, Hong L, Hui L, Minling L, Qiang L, Qingsong L, Shaokui L, Weidong L, Xueping L, Xinjian L, Benyan L, Shaonian L, Suxin L, Hong L, LvYun, Aiqun M, Jianhua M, Qiang M, Yan M, Changsheng M, Yide M, Yiming M, NieXiaoli, NiuXiaoyuan, Hongtao P, Mingkang P, Qiaoqing P, Huifen Q, Qiumin Q, Lijie Q, Liqun R, Jingshan S, Qiang S, Jing H, Xiuyun S, Yongquan S, Liangyi S, Zhi S, Zhiyuan S, Yufeng S, Chunyan T, TengXiaochun, Haoming T, Wenhua T, Qinwei T, TuQiuyun, Keying W, Aihong W, Chaohui W, Chunning W, Dezhao W, Guixia W, Hanqiao W, Jianan W, Jianjun W, Lan W, Xiaoming W, Yaping W, Yangwei W, Yongjun W, Meifang W, Yidong W, Hongyun W, Chun W, Dongmei W, Jiang W, Jun W, Xiaolin W, Zonggui W, XiGuangxia, Yi X, Qian X, Xiaoping X, Yulong X, Anding X, XueYuanming, Chuanzhu Y, Tao Y, Xiaowei Y, Gangyi Y, Jian Y, Wangpingm Y, Xiaosu Y, Xinchun Y, Yifang Y, Yu Y, Mingyu Y, Min Y, Ping Y, Bo Y, Jiangyi Y, Jinming Y, Yan Y, Ling Z, Longyi Z, Xiaoyun Z, Baorong Z, Bei Z, Chaoxin Z, Xuelian Z, Dadong Z, Dongping Z, Fuchun Z, Hong Z, Huifang Z, Liping Z, Liyang Z, Rufu Z, Saidan Z, Weijuan Z, Dong Z, Gang Z, Shuiping Z, Xiuxin Z, Qiangsun Z, Yang Z, Xiaohui Z, Yali Z, Yujie Z, Yi Z, Yulan Z, Xiangping Z. Gender differences in lipid goal attainment among Chinese patients with coronary heart disease: insights from the DYSlipidemia International Study of China. Eur Heart J Suppl 2015. [DOI: 10.1093/eurheartj/suv018] [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: 11/12/2022]
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24
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Chen B, Yu S, Ding X, Jing C, Xia L, Wang M, Matro E, Rehman F, Niu Y, Li G, Chang C. The role of testicular nuclear receptor 4 in chemo-resistance of docetaxel in castration-resistant prostate cancer. Cancer Gene Ther 2014; 21:411-5. [PMID: 25104727 DOI: 10.1038/cgt.2014.41] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2014] [Revised: 07/09/2014] [Accepted: 07/10/2014] [Indexed: 01/08/2023]
Abstract
Docetaxel-based therapy is one of the first-line options for castration-resistant prostate cancer (CRPC). However, a large proportion of CRPC patients show different extents of docetaxel resistance. The current study aims to investigate the role of testicular nuclear receptor 4 (TR4) in docetaxel resistance in CRPC. TR4 expression level in prostate biopsy samples from CRPC patients treated with docetaxel was measured by immunohistochemistry (IHC). Alternation of TR4 expression in prostate cancer (PCa) cell line PC3 was applied to find out the influence of TR4 on half-maximal inhibitory concentration (IC50), cell viability and cell apoptosis. Patients who failed to achieve prostate-specific antigen (PSA) response (<50% PSA reduction from baseline) after docetaxel-based chemotherapy had a comparatively higher TR4 expression than those who achieved PSA response (⩾50% PSA reduction from baseline). Knocking down TR4 in PC3 cells led to a lower IC50 dose, poorer cell viability and more cell apoptosis when treated with docetaxel, whereas overexpression of TR4 in PC3 led to a higher IC50 dose, better cell viability and less cell apoptosis. TR4 enhances the chemo-resistance of docetaxel in CRPC. It may serve as a biomarker to determine the prognosis of docetaxel-based therapy and as a potential therapy target to combine with docetaxel to better suppress CRPC.
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Affiliation(s)
- B Chen
- Department of Urology and Chawnshang Chang Liver Cancer Center, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - S Yu
- Department of Urology and Chawnshang Chang Liver Cancer Center, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - X Ding
- Department of Urology and Chawnshang Chang Liver Cancer Center, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - C Jing
- Department of Urology and Chawnshang Chang Liver Cancer Center, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - L Xia
- Department of Urology and Chawnshang Chang Liver Cancer Center, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - M Wang
- Department of Urology and Chawnshang Chang Liver Cancer Center, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - E Matro
- Department of Urology and Chawnshang Chang Liver Cancer Center, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - F Rehman
- Department of Urology and Chawnshang Chang Liver Cancer Center, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Y Niu
- Chawnshang Chang Sex Hormone Research Center, Department of Urology, The 2nd affiliated hospital of Tianjin Medical University, Tianjin, China
| | - G Li
- Department of Urology and Chawnshang Chang Liver Cancer Center, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - C Chang
- 1] Department of Urology and Chawnshang Chang Liver Cancer Center, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, China [2] George Whipple Lab for Cancer Research, Departments of Pathology, Urology and Radiation Oncology, and The Wilmot Cancer Center, University of Rochester Medical Center, Rochester, NY, USA
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25
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Antipov S, Baturin S, Jing C, Fedurin M, Kanareykin A, Swinson C, Schoessow P, Gai W, Zholents A. Experimental demonstration of energy-chirp compensation by a tunable dielectric-based structure. Phys Rev Lett 2014; 112:114801. [PMID: 24702378 DOI: 10.1103/physrevlett.112.114801] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2013] [Indexed: 06/03/2023]
Abstract
A tunable energy-chirp compensator was used to remove a correlated energy chirp from the 60-MeV beam at the Brookhaven National Laboratory Accelerator Test Facility. The compensator operates through the interaction of the wakefield of the electron bunch with itself and consists of a planar structure comprised of two alumina bars with copper-plated backs separated by an adjustable beam aperture. By changing the gap size, the correlated energy chirp of the electron bunch was completely removed. Calculations show that this device, properly scaled to account for the electron bunch charge and length, can be used to remove residual correlated energy spread at the end of the linacs used for free-electron lasers. The experimental results are shown to be in good agreement with numerical simulations. Application of this technique can significantly simplify linac design and improve free-electron lasers performance.
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Affiliation(s)
- S Antipov
- Euclid Techlabs LLC, Solon, Ohio 44139, USA and High Energy Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - S Baturin
- St. Petersburg Electrotechnical University LETI, St. Petersburg 197376, Russia
| | - C Jing
- Euclid Techlabs LLC, Solon, Ohio 44139, USA and High Energy Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - M Fedurin
- Accelerator Test Facility, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - A Kanareykin
- Euclid Techlabs LLC, Solon, Ohio 44139, USA and St. Petersburg Electrotechnical University LETI, St. Petersburg 197376, Russia
| | - C Swinson
- Accelerator Test Facility, Brookhaven National Laboratory, Upton, New York 11973, USA
| | | | - W Gai
- High Energy Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - A Zholents
- Advanced Photon Source, Argonne National Laboratory, Lemont, Illinois 60439, USA
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26
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Antipov S, Babzien M, Jing C, Fedurin M, Gai W, Kanareykin A, Kusche K, Yakimenko V, Zholents A. Subpicosecond bunch train production for a tunable mJ level THz source. Phys Rev Lett 2013; 111:134802. [PMID: 24116784 DOI: 10.1103/physrevlett.111.134802] [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] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Indexed: 06/02/2023]
Abstract
A strong energy modulation in an electron bunch passing through a dielectric-lined waveguide was recently demonstrated in Antipov et al., Phys. Rev. Lett. 108, 144801 (2012). In this Letter, we demonstrate a successful conversion of this energy modulation into a beam density modulation, and the formation of a series of microbunches with a subpicosecond periodicity by means of magnetic optics (chicane). A strong coherent transition radiation signal produced by the microbunches is obtained and the tunability of its carrier frequency in the 0.68-0.9 THz range by regulating the energy chirp in the incoming electron bunch is demonstrated using infrared interferometry. A tabletop, compact, tunable, and narrowband source of intense THz radiation based on this technology is proposed.
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Affiliation(s)
- S Antipov
- Euclid Techlabs LLC, Solon, Ohio 44139, USA and High Energy Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
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27
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Yang B, Jing C, Wang J, Guo X, Chen Y, Xu R, Peng L, Liu J, Li L. Identification of microRNAs associated with lymphangiogenesis in human gastric cancer. Clin Transl Oncol 2013; 16:374-9. [PMID: 23881463 DOI: 10.1007/s12094-013-1081-6] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Accepted: 07/15/2013] [Indexed: 02/08/2023]
Abstract
PURPOSE Lymphatic metastasis is a primary cause of gastric cancer-related death, yet factors governing tumor cell lymphatic metastasis have not been fully elucidated. MicroRNAs (miRNAs) are a recently discovered class of regulatory, non-coding RNAs, some of which are involved in gastric cancer progression. However, little is known about which miRNA contributes to the lymphatic metastasis in human gastric cancer. This prompted us to find the significant miRNAs associated with lymphangiogenesis in human gastric cancer. METHODS We screened vascular endothelial growth factor C (VEGF-C) expression in several gastric cancer cell lines as well as in the immortalized human gastric mucosal cell line GES-1, by real-time reverse transcriptase PCR (qRT-PCR). The gastric cancer cell lines MKN-45 and SGC-7901, which have commonly been cultured with human lymphatic endothelial cells (HLECs) in vitro, promoted tube formation of HLECs following transformation with a VEGF-C expression vector. Using microarrays, we identified a panel of differentially expressed miRNAs in HLECs that had been co-cultured with VEGF-C-transformed gastric cancer cells compared with non-transformed gastric cancer cells. A subset of miRNAs was further validated using qRT-PCR. RESULTS We found altered expression of miRNAs in HLECs co-cultured with lymphangiogenesis-inducing VEGF-C-transformed gastric cancer cells, with 47 up-regulated and 42 down-regulated miRNAs. These findings were confirmed by qRT-PCR of selected miRNAs. Furthermore, several miRNAs were differentially expressed in patients with positive lymphatic metastasis of the primary gastric tumor. Up-regulated miRNAs included miR-648, miR-5002-3p, miR-4754, miR-4760-5p, miR-4491, miR-4252, miR-5007-3p, and miR-647; and down-regulated miRNAs included miR-3178, miR-593-5p, miR-4485, miR-135a-3p, miR-17, miR-1469, and miR-124-5p. CONCLUSIONS Several lymphangiogenesis-related miRNAs are significantly altered during lymphatic metastasis of gastric cancer.
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Affiliation(s)
- B Yang
- Department of Gastrointestinal Surgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, 250021, China
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28
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Fu X, Zhang X, Jing C, Liu L, Yin Y, Jiang J. [Effects of Pseudomonas quinolone signal on the virulence of Pseudomonas aeruginosa]. Nan Fang Yi Ke Da Xue Xue Bao 2013; 33:18-21. [PMID: 23353148] [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: 06/01/2023]
Abstract
OBJECTIVE To investigate the effect of Pseudomonas quinolone signal (PQS) on the virulence of Pseudomonas aeruginosa. METHODS Pseudomonas aeruginosa strain PAO1 was treated with PQS alone, PQS plus farnesol, or farnesol alone. The transcriptional levels of the regulator gene ExsA and virulence protein gene ExoS of type III secretion system were examined using quantitative real-time PCR, and spectrophotometry was employed to detect pyocyanin production in the bacteria. The adhesion and invasiveness of the treated PAO1 in cultured alveolar epithelial cells A549 were assessed on plate count agar, and their effects on the survival of a mouse model of peritonitis was compared. RESULTS The increase or decrease of PQS did not affect the growth of PAO1. Compared with the untreated bacteria, PQS-treated PAO1 showed obviously increased transcription levels of ExsA and ExoS (P<0.01) and pyocyanin production, which was significantly lowered by farnesol (P<0.01). In A549 cell cultures, farnesol-treated PAO1 exhibited significantly lowered adhesion and invasiveness, while PQS-treated PAO1 caused a significantly decreased survival time of mice with peritonitis (P<0.01). Farnesol treatment did not obviously affected ExsA transcription (P>0.05) but caused a significant reduction in the transcriptional level of Exos (P<0.05) in PAO1. PQS showed no significant effect on the adhesion and invasiveness of PAO1 (P<0.05). CONCLUSION PQS can maintain the adhesion and invasiveness of Pseudomonas aeruginosa, and in the hosts of the bacteria, PQS concentration is positively correlated with pyocyanin production and hence negatively with the survival time of the hosts.
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Affiliation(s)
- Xiaohong Fu
- Chongqing International Science and Technology Cooperation, Chongqing, China.
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Wu Q, Du J, Zhuang G, Jing C. Bacillus
sp. SXB and Pantoea
sp. IMH, aerobic As(V)-reducing bacteria isolated from arsenic-contaminated soil. J Appl Microbiol 2012; 114:713-21. [DOI: 10.1111/jam.12093] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Revised: 11/29/2012] [Accepted: 11/30/2012] [Indexed: 12/01/2022]
Affiliation(s)
- Q. Wu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences; Beijing China
| | - J. Du
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences; Beijing China
| | - G. Zhuang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences; Beijing China
| | - C. Jing
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences; Beijing China
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30
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Rongrong C, Jing C, Li L. Action videogame playing improves visual-motor control before it improves vision. J Vis 2012. [DOI: 10.1167/12.9.690] [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: 11/24/2022] Open
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31
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Luo C, Xia Y, Liu Q, Chu L, Fu X, Jing C, Chen D, Liu L, Shi Y. Antibiotic resistance and molecular epidemiology of the beta-lactamase-producing Haemophilus influenzae isolated in Chongqing, China. APMIS 2012; 120:926-34. [PMID: 23009117 DOI: 10.1111/j.1600-0463.2012.02921.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2011] [Accepted: 04/15/2012] [Indexed: 11/30/2022]
Abstract
This study aimed to determine the antibiotic resistance and molecular epidemiology of Haemophilus influenzae isolated from children with acute respiratory infection in Chongqing, China. To this end, 1967 H. influenzae isolates from 2006 to 2009 were analysed regarding β-lactamase production and antibiotic resistance. Ninety-nine β-lactamase-producing H. influenzae isolates from 2010 were analysed for antibiotic resistance and promoter regions of bla(TEM) (-1) . β-lactamase production was found in 35.8% (705/1967) of the strains. All ninety-nine β-lactamase-producing strains from 2010 were of the TEM-1 type as determined by PCR but did not produce the predicted 1075 bp product. According to PCR-SSCP and DNA sequencing, the promoter regions of bla(TEM) (-1) were categorized into 6 genotypes as SSCP1 (Pdel), SSCP2 (Pa/Pb), SSCP3 (P4), SSCP4 (Prpt.b), SSCP5 (2Prpt) and SSCP6 (P3.b). The Pdel, Pa/Pb and Prpt.b were common promoters of bla(TEM) (-1) for H. influenzae isolated from children in Chongqing. Strains with Prpt.b were more resistant to ampicillin (AMP) than strains with Pdel, Pa/Pb and P4 (p < 0.05). Therefore, bla(TEM-1) β-lactamase is the main mechanism for resistance of H. influenzae to ampicillin in Chongqing. Furthermore, the Prpt.b promoters may be related to the high resistance of H. influenzae to AMP.
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Affiliation(s)
- Chong Luo
- Department of Kidney and Immunology, Ministry of Education Key Laboratory of Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
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32
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Antipov S, Jing C, Fedurin M, Gai W, Kanareykin A, Kusche K, Schoessow P, Yakimenko V, Zholents A. Experimental observation of energy modulation in electron beams passing through terahertz dielectric wakefield structures. Phys Rev Lett 2012; 108:144801. [PMID: 22540797 DOI: 10.1103/physrevlett.108.144801] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Indexed: 05/31/2023]
Abstract
We report the observation of a strong wakefield induced energy modulation in an energy-chirped electron bunch passing through a dielectric-lined waveguide. This modulation can be effectively converted into a spatial modulation forming microbunches with a periodicity of 0.5-1 ps and, hence, capable of driving coherent terahertz radiation. The experimental results agree well with theoretical predictions.
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Affiliation(s)
- S Antipov
- Euclid Techlabs LLC, Solon, Ohio 44139, USA
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Jing C, Han L, Qing L, Shu T, Kanghua M, Luosuuxin, Xiaogang Z, Wei H, Zhong Z, HangChongqing F. Optimisation of culture and cardiogenic differentiation of rat mesenchymal stem cells. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.652] [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: 11/03/2022]
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Jing C, Jing Z, Changwu X, Lin X, Jian Y, Sisi C. Inhibition of p300 activity attenuates intimal hyperplasia following arterial injury. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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35
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Jing C. Optimisation of culture and cardiogenic differentiation of rats mesenchymal stem cells. Heart 2011. [DOI: 10.1136/heartjnl-2011-300867.57] [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: 11/04/2022]
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36
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Guan-Gui L, Peiyan L, Meilan M, Lijuan W, Biao Y, Yong Z, Jing C, Tonghua W. Immunohistochemical evidence for increased numbers of CD57+ cells in the endometrium of women suffering repeated implantation failure after IVF-ET. J Reprod Immunol 2011. [DOI: 10.1016/j.jri.2011.06.087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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37
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Jing C, Kanareykin A, Power JG, Conde M, Liu W, Antipov S, Schoessow P, Gai W. Experimental demonstration of wakefield acceleration in a tunable dielectric loaded accelerating structure. Phys Rev Lett 2011; 106:164802. [PMID: 21599371 DOI: 10.1103/physrevlett.106.164802] [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] [Subscribe] [Scholar Register] [Received: 01/28/2011] [Indexed: 05/30/2023]
Abstract
We report on a collinear wakefield experiment using the first tunable dielectric loaded accelerating structure. By introducing an extra layer of nonlinear ferroelectric, which has a dielectric constant sensitive to temperature and dc bias, the frequency of a dielectric loaded accelerating structure can be tuned. During the experiment, the energy of a witness bunch at a fixed delay with respect to the drive beam was measured while the temperature of the structure was scanned over a 50 °C range. The energy change corresponded to a change of more than half of the nominal structure wavelength.
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Affiliation(s)
- C Jing
- Euclid Techlabs, LLC, 5900 Harper Road, Solon, Ohio 44139, USA
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38
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Jing C, Ping Y, Xiangqun R, Jun D, Tongrui H, Chengzhang W. e0147 Mechanism of different activators of PPAR regulating plasminogen activator inhibitor-1 expression. Heart 2010. [DOI: 10.1136/hrt.2010.208967.147] [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: 11/03/2022]
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Jing C, Kanareykin A, Power JG, Conde M, Yusof Z, Schoessow P, Gai W. Observation of enhanced transformer ratio in collinear wakefield acceleration. Phys Rev Lett 2007; 98:144801. [PMID: 17501280 DOI: 10.1103/physrevlett.98.144801] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2006] [Indexed: 05/15/2023]
Abstract
One approach to future high energy particle accelerators is based on the wakefield principle: a leading high-charge drive bunch is used to excite fields in an accelerating structure or plasma that in turn accelerates a trailing low-charge witness bunch. The transformer ratio R is defined as the ratio of the maximum energy gain of the witness bunch to the maximum energy loss of the drive bunch. In general, R<2 for this configuration. A number of techniques have been proposed to overcome the transformer ratio limitation. We report here the first experimental study of the ramped bunch train (RBT) technique in a dielectric based accelerating structure. A single drive bunch was replaced by two bunches with charge ratio of 1:2.5 and a separation of 10.5 wavelengths of the fundamental mode. An average measured transformer ratio enhancement by a factor of 1.31 over the single drive bunch case was obtained.
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Affiliation(s)
- C Jing
- Euclid Techlabs LLC, Solon, Ohio 44139, USA
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Power JG, Gai W, Gold SH, Kinkead AK, Konecny R, Jing C, Liu W, Yusof Z. Observation of multipactor in an alumina-based dielectric-loaded accelerating structure. Phys Rev Lett 2004; 92:164801. [PMID: 15169236 DOI: 10.1103/physrevlett.92.164801] [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] [Subscribe] [Scholar Register] [Received: 09/12/2003] [Indexed: 05/24/2023]
Abstract
We report a new regime of single-surface multipactor that was observed during high-power testing of an 11.424-GHz alumina-based dielectric-loaded accelerating structure. Previous experimental observations of single-surface multipactor on a dielectric occurred in cases for which the rf electric field was tangential and the rf power flow was normal to the dielectric surface (such as on rf windows) and found that the fraction of power absorbed at saturation is approximately 1%, independent of the incident power. In this new regime, in which strong normal and tangential rf electric fields are present and the power flow is parallel to the surface, the fraction of power absorbed at saturation is an increasing function of the incident power, and more than half of the incident power can be absorbed. A simple model is presented to explain the experimental results.
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Affiliation(s)
- J G Power
- High Energy Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
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41
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Johansson O, Gangi S, Liang Y, Yoshimura K, Jing C, Liu PY. Cutaneous mast cells are altered in normal healthy volunteers sitting in front of ordinary TVs/PCs--results from open-field provocation experiments. J Cutan Pathol 2001; 28:513-9. [PMID: 11737520 DOI: 10.1034/j.1600-0560.2001.281004.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
BACKGROUND Considerable controversy has surrounded the question of possible biological responses to electromagnetic fields (EMFs) generated from visual display terminals (VDTs), such as personal computers (PCs) and ordinary television sets (TVs). The cellular and molecular mechanisms for such potential harmful health hazards have not yet been understood, although clues from the literature include mast cells and histamine. The aim of this study was therefore to investigate possible biological mast cell responses to TV/PC screens. METHODS Using the indirect immunofluorescence technique, we studied the presence of histamine-containing mast cells in the dermis of healthy volunteers. Cutaneous biopsies taken before and after exposure to ordinary TV/PC screens for 2 or 4 h were investigated in 13 healthy subjects. RESULTS Our present in vivo study indicates that normal cutaneous mast cells could be altered by exposure from ordinary TV/PC screens. To our great surprise, we found the number of mast cells in the papillary and reticular dermis to increase, to varying degrees, in 5 out the 13 subjects after such an exposure. A migration of mast cells towards the uppermost dermis appeared as the most important event. Thus, the normally upper "empty zone" of the dermis disappeared, and instead, a higher density of mast cells were found in this zone. These cells also seemed to have a tendency to increase in number towards the epidermal-dermal junctional zone and some of them lost their granular content and the cytoplasm shrunk (=degranulation). These findings could only be seen in the exposed skin. Two of the 13 cases instead showed a decrease in mast cell number, but the shift in mast cells towards the upper dermis was still visible. Twenty-four h after the provocation, the cellular number and location were normalized in all subjects. CONCLUSIONS By definition, normal healthy volunteers are assumed not to react to a TV/PC screen provocation. To our great surprise, this proved not to be true. The present results might lay a foundation to understand the underlying cause of so-called "screen dermatitis" with special reference to mast cells. However, blind or double-blind experiments using patients ought to be further investigated in order to find out the exact cause for the observed changes. Such causes include the effects of surrounding airborne chemicals, stress factors, etc.
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Affiliation(s)
- O Johansson
- The Experimental Dermatology Unit, Department of Neuroscience, Karolinska Institute, Stockholm, Sweden
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42
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Jinquan T, Anting L, Jacobi HH, Glue C, Jing C, Ryder LP, Madsen HO, Svejgaard A, Skov PS, Malling HJ, Poulsen LK. CXCR3 expression on CD34(+) hemopoietic progenitors induced by granulocyte-macrophage colony-stimulating factor: II. Signaling pathways involved. J Immunol 2001; 167:4405-13. [PMID: 11591765 DOI: 10.4049/jimmunol.167.8.4405] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
CXCR3, known to have four ligands (IFN-gamma inducible protein 10 (gamma IP-10), monokine induced by IFN-gamma (Mig), I-TAC, and 6Ckine), is predominantly expressed on memory/activated T lymphocytes. We recently reported that GM-CSF induces CXCR3 expression on CD34(+) hemopoietic progenitors, in which gamma IP-10 and Mig induce chemotaxis and adhesion. Here we further report that stimulation with GM-CSF causes phosphorylation of Syk protein kinase, but neither Casitas B-lineage lymphoma (Cbl) nor Cbl-b in CD34(+) hemopoietic progenitors can be blocked by anti-CD116 mAb. Specific Syk blocking generated by PNA antisense completely inhibits GM-CSF-induced CXCR3 expression in CD34(+) progenitors at both mRNA and protein as well as at functional levels (chemotaxis and adhesion). Cbl and Cbl-b blocking have no such effects. Thus, GM-CSF binds to its receptor CD116, and consequently activates Syk phosphorylation, which leads to induce CXCR3 expression. gamma IP-10 and Mig can induce Syk, Cbl, and Cbl-b phosphorylation in CD34(+) progenitors by means of CXCR3. gamma IP-10 or Mig has induced neither chemotaxis nor adhesion in GM-CSF-stimulated Cbl-b-blocked CD34(+) hemopoietic progenitors, whereas SDF-1alpha induces both chemotaxis and adhesion in these cells. Interestingly, gamma IP-10 and Mig can induce chemotaxis and adhesion in GM-CSF-stimulated Syk- or Cbl-blocked CD34(+) hemopoietic progenitors. Thus, Cbl-b, but not Syk and Cbl phosphorylation, is essential for gamma IP-10- and Mig-induced chemotaxis and adhesion in CD34(+) hemopoietic progenitors. This study provides a useful insight into novel signaling transduction pathways of the functions of CXCR3/gamma IP-10 and Mig, which may be especially important in the cytokine/chemokine environment for mobilization, homing, and recruitment during proliferation, differentiation, and maturation of hemopoietic progenitor cells.
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Affiliation(s)
- T Jinquan
- Laboratory of Medical Allergology, Allergy Unit, Department of Clinical Immunology, National University Hospital, Copenhagen, Denmark.
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Meng X, Korfiatis GP, Jing C, Christodoulatos C. Redox transformations of arsenic and iron in water treatment sludge during aging and TCLP extraction. Environ Sci Technol 2001; 35:3476-3481. [PMID: 11563649 DOI: 10.1021/es010645e] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Laboratory experiments and modeling studies were performed to investigate the redox transformations of arsenic and iron in water treatment sludge during aging, and to evaluate the impact of those transformations on the leachability of arsenic determined with the U.S. EPA toxicity characteristic leaching procedure (TCLP). When the backwash suspension samples collected from a California surface water treatment plant were aged in closed containers for a few weeks, soluble arsenic increased from less than 5 microg/L to as high as 700 microg/L and then decreased dramatically because of biotic reduction of arsenate [As(V)], ferric oxyhydroxide, and sulfate. The experimental results and the thermodynamic models showed that arsenic mobility can be divided into three redox zones: (a) an adsorption zone at pe > 0, which is characterized by strong adsorption of As(V) on ferric oxyhydroxide; (b) a mobilization (transition) zone at -4.0 < pe < 0, where arsenic is released because of reduction of ferric oxyhydroxide to ferrous iron and As(V) to arsenite [As(III)]; and (c) a reductive fixation zone at pe < -4.0, where arsenic is immobilized by pyrite and other reduced solid phases. The TCLP substantially underestimated the leachability of arsenic in the anoxic sludge collected from sludge ponds because of the oxidation of Fe(II) and As(III) by oxygen. The leaching test should be performed in zero-headspace vessels or under nitrogen to minimize the transformations of the redox-sensitive chemical species.
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Affiliation(s)
- X Meng
- Center for Environmental Engineering, Stevens Institute of Technology, Hoboken, New Jersey 07030, USA.
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44
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Zhimang G, Xiaorong W, Xueyuan G, Jing C, Liansheng W, Lemei D, Yijun C. Effects of fulvic acid on the bioavailability of rare earth elements and GOT enzyme activity in wheat (Triticum aestivum). Chemosphere 2001; 44:545-551. [PMID: 11482641 DOI: 10.1016/s0045-6535(00)00484-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Fulvic acid (FA) was extracted and purified from natural soil and the effects of such FA on the bioaccumulation of rare earth elements (REEs, La3+, Gd3+ and Y3+) in wheat seedling were investigated. The results indicated that low concentration of FA (<0.4 mg C/l to root, <0.7 mg C/l to tops (stem and leaves)) could increase the bioaccumulation values of REEs in wheat, but when the concentration of FA was high (>0.4 mg C/l to root, >1.5 mg C/l to tops) the bioaccumulation values were decreased. Kinetic experimental results suggested that bioaccumulation values of REEs in roots for 30 days were correlated with the kinetic linear growth equation, and correlation coefficients were higher than 0.861. The kinetic bioaccumulation pattern of REEs in tops was different from that in root. The bioaccumulation values of REEs in wheat root were much higher than in wheat tops. Variations of glutamic oxaloacetic transaminase (GOT) enzyme activities in wheat root and tops were determined. A good correlation existed between the bioaccumulation values of REEs and GOT enzyme activities, and the correlation coefficients were higher than 0.922. GOT is an important parameter influencing the bioavailability of REEs.
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Affiliation(s)
- G Zhimang
- State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, People's Republic of China
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45
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Jing C, Beesley C, Foster CS, Chen H, Rudland PS, West DC, Fujii H, Smith PH, Ke Y. Human cutaneous fatty acid-binding protein induces metastasis by up-regulating the expression of vascular endothelial growth factor gene in rat Rama 37 model cells. Cancer Res 2001; 61:4357-64. [PMID: 11389060] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
Human cutaneous fatty acid-binding protein (C-FABP) gene is capable of inducing the metastatic phenotype when overexpressed in nonmetastatic rat Rama 37 cells. However, the mechanism of how it induces metastasis is not clear. Northern and slot blot analyses revealed that expression of the endogenous vascular endothelial growth factor (VEGF) gene was increased by 3.8-5.2-fold in the C-FABP-transfected cells (pSV-CFABP-R37) and in their metastatic sublines (e.g., Met-1) when compared with that in the nonmetastatic control transfectant pSV-R37 cells generated by transfection of only plasmid DNA. Higher levels of VEGF immunoreactive protein were also secreted from the malignant C-FABP-expressing cells. Reverse transcription-PCR detected two VEGF transcript isoforms, VEGF(164) and VEGF(188), in both the nonmetastatic control transfectant pSV-R37 cells and the malignant metastatic Met-1 cells. Chick chorioallantoic membrane assays showed that the conditioned medium of the control pSV-R37 cells possessed only very weak angiogenic activity, whereas conditioned media from the metastatic C-FABP transfectants and their sublines were strongly angiogenic and could be inhibited by antibodies to VEGF. Transfection of VEGF(164) cDNA in an expression vector into nonmetastatic Rama 37 cells produced a cell clone (R37-VEGF-2) that expressed high levels of VEGF. Inoculation of R37-VEGF-2 cells into syngeneic Wistar Furth rats produced metastases in a significant number (Fisher's exact test, P < 0.01) of animals (18 of 31 animals), whereas the control, vector alone-transfected R37-PSV cells produced no metastases (0 of 30 animals). Immunocytochemical methods demonstrated a strong positive staining for VEGF and an increased microvessel density in the primary tumors produced from PSV-VEGF-2 cells in comparison with tumors produced from control transfectants. Immunocytochemical staining for factor VIII detected a 3.5-fold increase in microvessel density of the primary tumors produced by PSV-VEGF-2 cells when compared with that of the primary tumors developed from the control pSV-R37 cells. Therefore, we suggest that overexpression of the C-FABP gene in the original transfectants induces metastasis through up-regulation of expression of the VEGF gene in this rat Rama 37 model system, and thus VEGF may play a crucial role in this particular metastatic cascade.
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Affiliation(s)
- C Jing
- Molecular Pathology Laboratory, Department of Pathology, University of Liverpool, Liverpool L69 3BX, United Kingdom
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Jing C, Rudland PS, Foster CS, Ke Y. Microquantity differential display: a strategy for a systematic analysis of differential gene expression with a small quantity of starting RNA. Anal Biochem 2000; 287:334-7. [PMID: 11112282 DOI: 10.1006/abio.2000.4864] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- C Jing
- Molecular Pathology Laboratory, School of Biological Sciences, Liverpool, L69 3BX, United Kingdom
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47
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Jinquan T, Quan S, Jacobi HH, Jing C, Millner A, Jensen B, Madsen HO, Ryder LP, Svejgaard A, Malling HJ, Skov PS, Poulsen LK. CXC chemokine receptor 3 expression on CD34(+) hematopoietic progenitors from human cord blood induced by granulocyte-macrophage colony-stimulating factor: chemotaxis and adhesion induced by its ligands, interferon gamma-inducible protein 10 and monokine induced by interferon gamma. Blood 2000; 96:1230-8. [PMID: 10942362] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
Abstract
CXC chemokine receptor 3 (CXCR3), which is known to be expressed predominately on memory and activated T lymphocytes, is a receptor for both interferon gamma (IFN-gamma)-inducible protein 10 (gamma IP-10) and monokine induced by IFN-gamma (Mig). We report the novel finding that CXCR3 is also expressed on CD34(+) hematopoietic progenitors from human cord blood stimulated with granulocyte-macrophage colony-stimulating factor (GM-CSF) but not on freshly isolated CD34(+) progenitors. Freshly isolated CD34(+) progenitors expressed low levels of CXCR3 messenger RNA, but this expression was highly up-regulated by GM-CSF, as indicated by a real-time quantitative reverse transcriptase-polymerase chain reaction technique. gamma IP-10 and Mig induced chemotaxis of GM-CSF-stimulated CD34(+) progenitors by means of CXCR3, since an anti-CXCR3 monoclonal antibody (mAb) was found to block gamma IP-10-induced and Mig-induced CD34(+) progenitor chemotaxis. These chemotactic attracted CD34(+) progenitors are colony-forming units-granulocyte-macrophage. gamma IP-10 and Mig also induced GM-CSF-stimulated CD34(+) progenitor adhesion and aggregation by means of CXCR3, a finding confirmed by the observation that anti-CXCR3 mAb blocked these functions of gammaIP-10 and Mig but not of chemokine stromal cell-derived factor 1 alpha. gamma IP-10-induced and Mig-induced up-regulation of integrins (CD49a and CD49b) was found to play a crucial role in adhesion of GM-CSF-stimulated CD34(+) progenitors. Moreover, gamma IP-10 and Mig stimulated CXCR3 redistribution and cellular polarization in GM-CSF-stimulated CD34(+) progenitors. These results indicate that CXCR3-gamma IP-10 and CXCR3-Mig receptor-ligand pairs, as well as the effects of GM-CSF on them, may be especially important in the cytokine/chemokine environment for the physiologic and pathophysiologic events of differentiation of CD34(+) hematopoietic progenitors into lymphoid and myeloid stem cells, subsequently immune and inflammatory cells. These processes include transmigration, relocation, differentiation, and maturation of CD34(+) hematopoietic progenitors. (Blood. 2000;96:1230-1238)
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Affiliation(s)
- T Jinquan
- Laboratory of Medical Allergology, Allergy Unit, National University Hospital, Copenhagen, Denmark.
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48
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Jinquan T, Jacobi HH, Jing C, Reimert CM, Quan S, Dissing S, Poulsen LK, Skov PS. Chemokine stromal cell-derived factor 1alpha activates basophils by means of CXCR4. J Allergy Clin Immunol 2000; 106:313-20. [PMID: 10932076 DOI: 10.1067/mai.2000.108108] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND The CXC chemokine receptor 4 (CXCR4) is predominantly expressed on inactivated naive T lymphocytes, B lymphocytes, dendritic cells, and endothelial cells. CXC chemokine stromal cell-derived factor 1alpha (SDF-1alpha) is the only known ligand for CXCR4. To date, the CXCR4 expression and function of SDF-1alpha in basophils are unknown. OBJECTIVE The purpose of this study was to investigate the expression of CXCR4 and functions of SDF-1alpha in basophils and to characterize the role of the CXCR4-SDF-1alpha receptor ligand pair in the allergic inflammation. METHODS Basophil purification, flow cytometry, real-time quantitative RT-PCR assay, Northern blotting, intracellular free Ca(2+) change, chemotaxis assay, and histamine release assay were used. RESULTS CXCR4 is abundantly expressed on peripheral blood resting basophils (91%). Likewise, CXCR4 messenger (m)RNA is expressed in resting basophils (3.2 x 10(3) copies per 2 x 10(2) cells). The existence of CXCR4 mRNA was also confirmed in basophils by means of Northern blot analysis. SDF-1alpha induces an increase in intracellular free Ca(2+) in basophils. SDF-1alpha activates basophils to chemotaxis (chemotactic index = 3.8) and histamine release (36% of total content) through CXCR4 on the cells. The chemokines SDF-1alpha, eotaxin, RANTES, monocyte chemoattractant protein (MCP) 1, and macrophage inflammatory protein (MIP) 1alpha have been demonstrated at different potencies in induction of chemotaxis (eotaxin > SDF-1alpha > RANTES congruent with MCP-1 >> MIP-1alpha) and histamine release (MCP-1 congruent with SDF-1alpha > eotaxin > RANTES > MIP-1alpha). The optimal concentration seen for SDF-1alpha effects (chemotaxis and histamine release) on basophils was 100 ng/mL. CONCLUSION These results indicate that the CXCR4-SDF-1alpha receptor ligand pair may be important for the recruitment and activation of the basophils, which is a characteristic effector cell of the allergic inflammation.
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Affiliation(s)
- T Jinquan
- Laboratory of Medical Allergology and the Reference Laboratory, Allergy Unit, National University Hospital, and the Department of Medical Physiology, University of Copenhagen, Copenhagen, Denmark
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49
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Jinquan T, Jing C, Jacobi HH, Reimert CM, Millner A, Quan S, Hansen JB, Dissing S, Malling HJ, Skov PS, Poulsen LK. CXCR3 expression and activation of eosinophils: role of IFN-gamma-inducible protein-10 and monokine induced by IFN-gamma. J Immunol 2000; 165:1548-56. [PMID: 10903763 DOI: 10.4049/jimmunol.165.3.1548] [Citation(s) in RCA: 130] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
CXC chemokine receptor 3 (CXCR3), predominately expressed on memory/activated T lymphocytes, is a receptor for both IFN-gamma-inducible protein-10 (gamma IP-10) and monokine induced by IFN-gamma (Mig). We report a novel finding that CXCR3 is also expressed on eosinophils. gamma IP-10 and Mig induce eosinophil chemotaxis via CXCR3, as documented by the fact that anti-CXCR3 mAb blocks gamma IP-10- and Mig-induced eosinophil chemotaxis. gamma IP-10- and Mig-induced eosinophil chemotaxis are up- and down-regulated by IL-2 and IL-10, respectively. Correspondingly, CXCR3 protein and mRNA expressions in eosinophils are up- and down-regulated by IL-2 and IL-10, respectively, as detected using flow cytometry, immunocytochemical assay, and a real-time quantitative RT-PCR technique. gamma IP-10 and Mig act eosinophils to induce chemotaxis via the cAMP-dependent protein kinase A signaling pathways. The fact that gamma IP-10 and Mig induce an increase in intracellular calcium in eosinophils confirms that CXCR3 exists on eosinophils. Besides induction to chemotaxis, gamma IP-10 and Mig also activate eosinophils to eosinophil cationic protein release. These results indicate that CXCR3-gamma IP-10 and -Mig receptor-ligand pairs as well as the effects of IL-2 and IL-10 on them may be especially important in the cytokine/chemokine environment for the pathophysiologic events of allergic inflammation, including initiation, progression, and termination in the processes.
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Affiliation(s)
- T Jinquan
- Laboratory of Medical Allergology, Allergy Unit, National University Hospital, University of Copenhagen, Copenhagen, Denmark.
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50
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Jing C, Beesley C, Foster CS, Rudland PS, Fujii H, Ono T, Chen H, Smith PH, Ke Y. Identification of the messenger RNA for human cutaneous fatty acid-binding protein as a metastasis inducer. Cancer Res 2000; 60:2390-8. [PMID: 10811115] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Using our recently developed systematic differential display and complete comparison of gene expression approaches combined with other methods, we have identified a large number of mRNAs that are expressed differentially between benign and malignant human cells. One such mRNA that is common to prostate and breast carcinoma cell lines encodes the human cutaneous fatty acid-binding protein (C-FABP). Northern and slot blot analyses confirm that the expression levels of C-FABP mRNA in the malignant prostate and breast carcinoma cell lines are 4.9+/-0.9- to 16.9+/-2.1-fold higher than those expressed in the benign cell lines. A similar difference between the benign and malignant cell lines was also detected at the protein level. In situ hybridization experiments have detected overexpression of the mRNA for C-FABP in human prostate carcinoma tissues. Transfection of a C-FABP expression construct into the benign, nonmetastatic rat mammary epithelial cell line Rama 37 and inoculation of the C-FABP expression transfectants into syngeneic Wistar-Furth rats produce a significant number (P < 0.05) of animals with metastases (6 of 26 animals), whereas the control transfectants generated by the vector alone yield no such metastases. Measurements of mRNA and protein levels with Northern and Western blotting show that C-FABP is not expressed in the control transfectant cells produced by the vector alone but is highly expressed in the pool of C-FABP transfectants and-the sublines established from their metastases. Immunocytochemical staining with antibodies to C-FABP shows that C-FABP is not expressed in the primary tumors developed from the control transfectants that have failed to metastasize, but it is expressed in both the primary tumors developed from the C-FABP transfectants and their metastases. Reinoculation of the sublines established from metastases in syngeneic rats has produced a higher proportion (50%) of animals (7 of 14 animals) with metastases than that obtained in the first-round inoculations, indicating that the metastatic clones have been preferentially selected from the original pool of metastatic and nonmetastatic transfectant clones. These results have demonstrated that elevated expression of C-FABP can induce metastasis and that metastatic capability has been transferred in a genetically dominated manner in this Rama 37 model. Thus, we suggest that C-FABP is a metastasis-inducing gene, and under suitable conditions, it may induce metastasis of some human cancers.
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Affiliation(s)
- C Jing
- Department of Pathology, University of Liverpool, United Kingdom
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