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Sun L, Zhu WW, Zhang J, Zhao PC, Zhu YQ, Zhang FX. [Exosomes derived from miR-133a-3p engineered mesenchymal stem cells promote myocardial repair in rats after acute myocardial infarction]. Zhonghua Xin Xue Guan Bing Za Zhi 2024; 52:72-78. [PMID: 38220458 DOI: 10.3760/cma.j.cn112148-20231008-00243] [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: 01/16/2024]
Abstract
Objective: To investigate the effects of exosome derived from miR-133a-3p engineered human umbilical cord blood mesenchymal stem cells (ucMSC) on myocardial repair after acute myocardial infarction (AMI) in rats. Methods: UcMSC was amplified and cultured in vitro. Lentiviral carrying miR-133a-3p and negative control vectors were transfected into ucMSC. Exosomes secreted by the transfected ucMSC were named miR-133a-3p-Exo and miR-NC-Exo, respectively. The AMI model of rats was established by ligation of the left anterior descending coronary artery. MiR-133a-3p-Exo or miR-NC-Exo were then injected into the border zone of the infarct area. Cardiac function was assessed by echocardiography after twenty-eight days of intervention, and Masson staining was used to evaluate the area of myocardial fibrosis post-AMI. The myocardial apoptosis after infarction was evaluated by TUNEL staining and the angiogenesis after infarction was evaluated by immunofluorescence staining in the current study. Results: Compared with the miR-NC-Exo group, the left ventricular ejection fraction in the miR-133a-3p-Exo group was significantly increased ((47.4%±9.8%) vs. (64.2%±8.9%), P<0.05). While the myocardial fibrosis area ((31.2%±7.3%) vs. (18.0%±1.5%), P<0.01) and the percentage of apoptotic cardiomyocytes ((25.6%±3.6%) vs. (15.1%±4.4%), P<0.05) was significantly reduced in the miR-133a-Exo group. Besides, the expression of CD31 and α-smooth muscle actin (α-SMA) were also increased significantly in the miR-133a-3p-Exo group compared to the miR-NC-Exo group (CD31: (2.9±0.9) vs. (13.9±2.0), P<0.000 1, α-SMA: (3.5±0.9) vs. (11.0±1.6), P<0.000 1). Conclusion: Exosome derived from miR-133a-3p engineered ucMSC effectively inhibited myocardial apoptosis and promoted angiogenesis, thus improving the cardiac function after myocardial infarction in rats.
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Affiliation(s)
- L Sun
- Department of Cardiology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - W W Zhu
- Department of Cardiology, Xuzhou Central Hospital, Xuzhou Clinical School of Nanjing Medical University, Xuzhou 221000, China
| | - J Zhang
- Department of Cardiology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - P C Zhao
- Department of Cardiology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Y Q Zhu
- Department of Cardiology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - F X Zhang
- Department of Cardiology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
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Pan XS, Li BW, Wang LL, Li N, Lin HM, Zhang J, Du N, Zhu YQ, Wu X, Hu CM, Wu WY, Hou H, Zhao HC, Liao SY, Yang YN, Huang Y. Kupffer cell pyroptosis mediated by METTL3 contributes to the progression of alcoholic steatohepatitis. FASEB J 2023; 37:e22965. [PMID: 37171272 DOI: 10.1096/fj.202300059rr] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 04/17/2023] [Accepted: 04/26/2023] [Indexed: 05/13/2023]
Abstract
Chronic alcohol consumption is a major risk factor for alcoholic steatohepatitis (ASH). Previous studies have shown that direct injury of hepatocytes is the key factor in its occurrence and development. However, our study shows that the role of Kupffer cells in ASH cannot be ignored. We isolated Kupffer cells from the livers of ASH mice and found that alcohol consumption induced Kupffer cell pyroptosis and increased the release of interleukin-1β (IL-1β). Furthermore, we screened the related m6A enzyme methyltransferase-like 3 (METTL3) from liver Kupffer cells, and found that silencing METTL3 alleviated inflammatory cytokine eruption by Kupffer cell pyroptosis in ASH mice. In vitro, we silenced METTL3 with lentivirus in BMDMs and RAW264.7 cells and confirmed that METTL3 could reduce pyroptosis by influencing the splicing of pri-miR-34A. Together, our results revealed a critical role of KC pyroptosis in ASH and highlighted the mechanism by which METLL3 relieves cell pyroptosis, which could be a promising therapeutic strategy for ASH.
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Affiliation(s)
- Xue-Sheng Pan
- School of Pharmacy, Anhui Medical University; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, P.R. China
- Department of Immunology, School of Basic Medicine, Anhui Medical University, Hefei, China
| | - Bo-Wen Li
- School of Pharmacy, Anhui Medical University; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, P.R. China
| | - Li-Li Wang
- School of Pharmacy, Anhui Medical University; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, P.R. China
| | - Ning Li
- Department of Ophthalmology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Hui-Min Lin
- School of Pharmacy, Anhui Medical University; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, P.R. China
| | - Jin Zhang
- School of Pharmacy, Anhui Medical University; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, P.R. China
| | - Na Du
- School of Pharmacy, Anhui Medical University; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, P.R. China
| | - Yue-Qin Zhu
- Department of Pharmacy, West Branch of The First Affiliated Hospital of University of Science and Technology of China (Anhui Provincial Cancer Hospital), Hefei, China
| | - Xian Wu
- School of Pharmacy, Anhui Medical University; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, P.R. China
| | - Cheng-Mu Hu
- School of Pharmacy, Anhui Medical University; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, P.R. China
| | - Wen-Yong Wu
- Department of General Surgery, The Hefei Second People's Hospital, Hefei, China
| | - Hui Hou
- Department of General Surgery, The Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Hong-Chuan Zhao
- Department of General Surgery, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Song-Yan Liao
- Cardiology Division, Department of Medicine, Queen Mary Hospital, the University of Hong Kong, Hong Kong, China
| | - Ya-Nan Yang
- Department of Immunology, School of Basic Medicine, Anhui Medical University, Hefei, China
| | - Yan Huang
- School of Pharmacy, Anhui Medical University; Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, P.R. China
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Wen QR, Zhu YQ, Lyu J, Guo Y, Pei P, Yang L, Du HD, Chen YP, Chen JS, Yu CQ, Chen LM, Li L. [Characteristics of daytime napping and its correlation with chronic diseases in Chinese adults]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:1869-1874. [PMID: 36572456 DOI: 10.3760/cma.j.cn112338-20220108-00016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Objective: To describe the prevalence of daytime nap habit in participants of the China Kadoorie Biobank (CKB) study, across 10 study regions and explore its correlation with prevalence of major chronic diseases. Methods: Participants with a self-reported pre-diagnosis of any cancer at baseline survey were excluded. Logistic regression models were used to analyze the differences in study regions and age distribution of the prevalence daytime nap habit, and its correlation with the prevalence of diabetes, hypertension, coronary heart disease (CHD), stroke, chronic obstructive pulmonary disease (COPD), and chronic liver diseases. Results: Among 510 145 participants, 39.9% had daytime nap habit in summer and 20.8% had daytime nap habit all the year round. Urban-rural differences were observed in the prevalence of summer nap habit and perennial nap habit. Daytime nap in summer was common in rural areas and Suzhou, with prevalence ranged from 32.9% to 73.3%. Haikou and Liuzhou had higher prevalence of perennial nap (60.4% and 63.3%). The proportion of people with daytime nap habit all the year round increased with age (P for trend <0.001), the proportion was highest in those aged 70- years (31.9%). Daytime nap habit in summer was positively correlated with the prevalence of diabetes, hypertension, CHD and chronic liver disease with OR of 1.10 (95%CI: 1.07-1.14), 1.03 (95%CI:1.02-1.05), 1.07 (95%CI: 1.02-1.12) and 1.07 (95%CI:1.00-1.14), respectively. Daytime nap habit all the year round was positively correlated with the prevalence of diabetes, hypertension, CHD, stroke, COPD and chronic liver disease with OR of 1.33 (95%CI: 1.29-1.37), 1.11 (95%CI: 1.09-1.13), 1.39 (95%CI: 1.33-1.45), 1.33 (95%CI: 1.26-1.41), 1.12 (95%CI: 1.08-1.16) and 1.27 (95%CI:1.18-1.37) respectively. Conclusion: There were regional and age differences in prevalence of daytime nap habit among CKB participants. Daytime nap habit, especially daytime nap habit all the year round, was positively correlated with the prevalence of major chronic diseases.
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Affiliation(s)
- Q R Wen
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - Y Q Zhu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - J Lyu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Peking University Center for Public Health and Epidemic Preparedness & Response, Beijing 100191, China
| | - Y Guo
- Fuwai Hospital, Chinese Academy of Medical Sciences, National Center for Cardiovascular Diseases, Beijing 100037, China
| | - P Pei
- Peking University Center for Public Health and Epidemic Preparedness & Response, Beijing 100191, China
| | - L Yang
- Nuffield Department of Population Health, Center for Clinical and Epidemiological Studies, University of Oxford, Oxford OX3 7LF, UK Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Oxford OX3 7LF, UK
| | - H D Du
- Nuffield Department of Population Health, Center for Clinical and Epidemiological Studies, University of Oxford, Oxford OX3 7LF, UK Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Oxford OX3 7LF, UK
| | - Y P Chen
- Nuffield Department of Population Health, Center for Clinical and Epidemiological Studies, University of Oxford, Oxford OX3 7LF, UK Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Oxford OX3 7LF, UK
| | - J S Chen
- China National Center for Food Safety Risk Assessment, Beijing 100022, China
| | - C Q Yu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Peking University Center for Public Health and Epidemic Preparedness & Response, Beijing 100191, China
| | - L M Chen
- Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Oxford OX3 7LF, UK
| | - Liming Li
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Peking University Center for Public Health and Epidemic Preparedness & Response, Beijing 100191, China
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Zhu YQ, Fan JN, Yu CQ, Lyu J, Guo Y, Pei P, Xia QM, Du HD, Chen YP, Chen JS, Chen ZM, Li LM. [Correlation between sleep status and frailty in adults aged 30-79 years in China]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:1349-1356. [PMID: 36117338 DOI: 10.3760/cma.j.cn112338-20220110-00018] [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: 06/15/2023]
Abstract
Objective: To explore the correlation between sleep status and frailty in adults aged 30-79 years in China, and explore the potential effect modification of general and central obesity. Methods: Based on the baseline data of the China Kadoorie Biobank, we used multinomial logistic regression to analyze the correlation between long and short sleep duration, insomnia disorder, snoring, and unhealthy sleep score with risks of pre-frailty and frailty. Both overall and obesity-stratified analyses were performed. Result: Among the 512 724 participants, 2.3% had frailty and 40.1% had pre-frailty. There was a U-shaped relationship between sleep duration and frailty score. Short (OR=1.21, 95%CI: 1.19-1.23) or long sleep duration (OR=1.19, 95%CI: 1.17-1.21), insomnia disorder (OR=2.09, 95%CI: 2.02-2.17), and snoring (OR=1.61, 95%CI: 1.59-1.63) were all positively correlated with pre-frailty, and dose-response relationships were observed between unhealthy sleep score and pre-frailty (P for trend<0.001), with OR values of 1.46 (1.44-1.48), 1.97 (1.93-2.00) and 3.43 (3.21-3.67) respectively for those having unhealthy sleep score of 1 to 3. These sleep problems were also positively correlated with frailty. Compared with the overweight or obesity group, stronger relationships were observed between short sleep duration and frailty or pre-frailty and between insomnia disorder and pre-frailty, while the relationships between snoring and frailty and pre-frailty were weaker in the participants with normal weight (P for interaction <0.007 for all). We also observed similar effect modification by central obesity. Conclusion: Long or short sleep duration, insomnia disorder, snoring and higher unhealthy sleep scores were positively correlated with pre-frailty or frailty, general and central obesity status could modify the relationships.
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Affiliation(s)
- Y Q Zhu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - J N Fan
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - C Q Yu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Peking University Center for Public Health and Epidemic Preparedness & Response, Beijing 100191, China
| | - J Lyu
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Peking University Center for Public Health and Epidemic Preparedness & Response, Beijing 100191, China
| | - Y Guo
- Fuwai Hospital, Chinese Academy of Medical Sciences, National Center for Cardiovascular Diseases, Beijing 100037, China
| | - P Pei
- Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Q M Xia
- Chinese Academy of Medical Sciences, Beijing 100730, China
| | - H D Du
- Medical Research Council Population Health Research Unit at the University of Oxford, Oxford OX3 7LF, UK Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Oxford OX3 7LF, UK
| | - Y P Chen
- Medical Research Council Population Health Research Unit at the University of Oxford, Oxford OX3 7LF, UK Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Oxford OX3 7LF, UK
| | - J S Chen
- China National Center for Food Safety Risk Assessment, Beijing 100022, China
| | - Z M Chen
- Clinical Trial Service Unit and Epidemiological Studies Unit, Nuffield Department of Population Health, University of Oxford, Oxford OX3 7LF, UK
| | - L M Li
- Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China Peking University Center for Public Health and Epidemic Preparedness & Response, Beijing 100191, China
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5
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Wang JJ, Liu SX, Yu DZ, Zhu YQ, Zhang WT, Chen ZN, Yin SK. [Application of internal carotid artery stent in skull base surgery]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2022; 57:835-842. [PMID: 35866276 DOI: 10.3760/cma.j.cn115330-20210707-00434] [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: 06/15/2023]
Abstract
Objective: To report the experience of the application of internal carotid artery stent in skull base surgery, and to clarify the important role of internal carotid artery stent in skull base surgery. Methods: A retrospective study of 22 cases with skull base neoplasms implanted with internal carotid artery stents in the Department of ENT Head and Neck Surgery at the Sixth People's Hospital affiliated with Shanghai Jiao Tong University between July 2019 and January 2021 was conducted. Among them, 17 were male and 5 were female, aged between 33 and 75 years. There were 5 cases on the left, 16 cases on the right, and 1 case on both sides. Of these, there were 4 cases of jugular paraganglioma, 1 case of chondrosarcoma in the jugular foramen, 1 case of carotid body paraganglioma, and 16 cases of nasopharyngeal carcinoma after radiotherapy. Results: The degree of internal carotid artery erosion was assessed by computed tomography angiography (CTA), magnetic resonance imaging and digital subtraction angiography (DSA) images in 22 patients before surgery. It was found that the internal carotid artery was involved to varying degrees in all patients, so internal carotid artery stents were implanted before surgery. Tumor tissue was found to surround the internal carotid artery to varying degrees. Total or subtotal tumor resection was performed in all patients, and no intraoperative and postoperative complications occurred. The postoperative follow-up was 5 months to 2 years, and all patients had no complications such as spontaneous bleeding and pseudo aneurysm. There were no signs of stenosis or occlusion of the internal carotid artery stent segment in all cases. Conclusions: For patients with skull base tumors, preoperative imaging indicates the limited involvement of the internal carotid artery, and internal carotid artery stent implantation before surgery is a safe and effective treatment.
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Affiliation(s)
- J J Wang
- Department of Otolaryngology Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Hearing Test Center, Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai Oriental Institute of Otorhinolaryngology, Shanghai 200233, China
| | - S X Liu
- Department of Otolaryngology Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Hearing Test Center, Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai Oriental Institute of Otorhinolaryngology, Shanghai 200233, China
| | - D Z Yu
- Department of Otolaryngology Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Hearing Test Center, Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai Oriental Institute of Otorhinolaryngology, Shanghai 200233, China
| | - Y Q Zhu
- Department of Otolaryngology Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Hearing Test Center, Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai Oriental Institute of Otorhinolaryngology, Shanghai 200233, China
| | - W T Zhang
- Department of Otolaryngology Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Hearing Test Center, Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai Oriental Institute of Otorhinolaryngology, Shanghai 200233, China
| | - Z N Chen
- Department of Otolaryngology Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Hearing Test Center, Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai Oriental Institute of Otorhinolaryngology, Shanghai 200233, China
| | - S K Yin
- Department of Otolaryngology Head and Neck Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Hearing Test Center, Otolaryngology Institute of Shanghai Jiao Tong University, Shanghai Oriental Institute of Otorhinolaryngology, Shanghai 200233, China
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Wang ZM, Liu Q, Liu YX, Chen YJ, Zhou Q, Deng XL, Zhang XD, Xu BH, Zhu YQ, Gao CZ, Yin L, Xie H, Fei W, Zhou J, Yuan CQ, He XN, Wang X, Chen LL. [Consensus of experts on the oral health management and medical risk prevention for the patients with chronic airway diseases (2022 edition)]. Zhonghua Kou Qiang Yi Xue Za Zhi 2022; 57:455-461. [PMID: 35484667 DOI: 10.3760/cma.j.cn112144-20220228-00081] [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: 06/14/2023]
Abstract
Today, there is greater awareness on the association between oral diseases and respiration diseases after the outbreak of COVID-19. However, confusion regarding the oral health management and medical risk prevention for patients with chronic airway diseases has been remained among dental clinicians. Therefore, the dental experts of the Fifth General Dentistry Special Committee, Chinese Stomatological Association, combined with the experts of respiratory and critical care medicine, undertook the formation of consensus on the oral health management of patients with chronic airway diseases in order to help dental clinicians to evaluate medical risks and make better treatment decision in clinical practice. In the present consensus report, the relationship of oral diseases and chronic airway diseases, the oral health management and the treatment recommendations of patients with chronic airway diseases are provided.
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Affiliation(s)
- Z M Wang
- Department of Stomatology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - Q Liu
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Y X Liu
- Department of Respiratory and Critical Care Medicine, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - Y J Chen
- Department of General Dentistry & Emergency, School of Stomatology, The Fourth Military Medical University & State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Xi'an 710032, China
| | - Q Zhou
- Department of Respiratory and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - X L Deng
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - X D Zhang
- Department of Stomatology, General Hospital of Northern Theater Command, Shenyang 110016, China
| | - B H Xu
- Department of Stomatology, China-Japan Friendship Hospital, Beijing 100029, China
| | - Y Q Zhu
- Department of General Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine & College of Stomatology, Shanghai Jiao Tong University & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Shanghai Key Laboratory of Stomatology, Shanghai 200011, China
| | - C Z Gao
- Department of Stomatology, Peking University People's Hospital, Beijing 100044, China
| | - L Yin
- Department of Stomatology, The First Affiliated Hospital With Nanjing Medical University, Nanjing 210029, China
| | - H Xie
- Department of Stomatology, The People's Hospital of Liaoning Province, Shenyang 110016, China
| | - W Fei
- Department of Stomatology, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu 610072, China
| | - J Zhou
- Department of VIP Dental Service, Capital Medical University School of Stomatology, Beijing 100050, China
| | - C Q Yuan
- Department of Stomatology, The Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - X N He
- Department of Stomatology, The Second Affiliated Hospital of Hainan Medical University, Haikou 570100, China
| | - X Wang
- Department of Stomatology, Peking University Third Hospital, Beijing 100191, China
| | - L L Chen
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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Zhang J, Su GH, Zhang XD, Xu K, Wang ZM, Deng XL, Zhu YQ, Chen YJ, Gao CZ, Xie H, Pan X, Yin L, Xu BH, Fei W, Zhou J, Shao D, Zhang ZH, Zhang K, Wang X, Cheng X, Wang X, Chen LL. [Consensus of experts on the medical risk prevention for the patients with cardiovascular diseases during dental treatment (2022 edition)]. Zhonghua Kou Qiang Yi Xue Za Zhi 2022; 57:462-473. [PMID: 35484668 DOI: 10.3760/cma.j.cn112144-20220311-00102] [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: 11/11/2022]
Abstract
With the aging process of population in the society, the prevalence of cardiovascular diseases (CVD) in China is increasing continuously and the number of dental patients with CVD is increasing gradually too. Due to the lack of guidelines for dental patients with CVD in our country, how to implement standardized preoperative evaluation and perioperative risk prevention remains a problem to be solved for dentists at present. The present expert consensus was reached by combining the clinical experiences of the expert group of the Fifth General Dentistry Special Committee, Chinese Stomatological Association and respiratory and cardiology experts in diagnosis and treatment for CVD patients, and by systematically summarizing the relevant international guidelines and literature regarding the relationship between CVD and oral diseases and the diagnosis and treatment of dental patients with heart failure, hypertension and antithrombotic therapy. The consensus aims to provide, for the dental clinicians, the criteria on diagnosis and treatment of CVD in dental patients in China so as to reduce the risk and complications, and finally to improve the treatment levels of dental patients with CVD in China.
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Affiliation(s)
- J Zhang
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - G H Su
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - X D Zhang
- Department of Stomatology, General Hospital of Northern Theater Command, Shenyang 110016, China
| | - K Xu
- Department of Cardiology, General Hospital of Northern Theater Command, Shenyang 110016, China
| | - Z M Wang
- Department of Stomatology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - X L Deng
- Department of Geriatric Dentistry, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Y Q Zhu
- Department of General Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine & College of Stomatology, Shanghai Jiao Tong University & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Shanghai Key Laboratory of Stomatology, Shanghai 200011, China
| | - Y J Chen
- Department of General Dentistry & Emergency, School of Stomatology, The Fourth Military Medical University & State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Xi'an 710032, China
| | - C Z Gao
- Department of Stomatology, Peking University People's Hospital, Beijing 100044, China
| | - H Xie
- Department of Stomatology, The People's Hospital of Liaoning Province, Shenyang 110016, China
| | - X Pan
- The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou 510080, China
| | - L Yin
- Department of Stomatology, The First Affiliated Hospital With Nanjing Medical University, Nanjing 210029, China
| | - B H Xu
- Department of Stomatology, China-Japan Friendship Hospital, Beijing 100029, China
| | - W Fei
- Department of Stomatology, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, Chengdu 610072, China
| | - J Zhou
- Department of VIP Dental Service, Capital Medical University School of Stomatology, Beijing 100050, China
| | - D Shao
- Department of Stomatology, Qingdao West Coast New Area Central Hospital, Qingdao 266555, China
| | - Z H Zhang
- Center of Stomatology, The First Affiliated Hospital of USTC (Anhui Provincial Hospital), Hefei 230001, China
| | - K Zhang
- Department of Stomatology, The First Affiliated Hospital of Bengbu Medical College, Bengbu 233000, China
| | - X Wang
- Department of Cardiology, Guangdong Province Traditional Chinese Medical Hospital, Guangzhou 510120, China
| | - X Cheng
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - X Wang
- Department of Stomatology, Peking University Third Hospital, Beijing 100191, China
| | - L L Chen
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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Bai XB, Zhou LJ, Lin WZ, Zhu YQ. [Research progress in association of neurological disorders and periodontal diseases]. Zhonghua Kou Qiang Yi Xue Za Zhi 2022; 57:529-534. [PMID: 35484677 DOI: 10.3760/cma.j.cn112144-20220312-00103] [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: 06/14/2023]
Abstract
Periodontal diseases are inflammatory diseases caused by oral pathogens around the periodontal supporting tissues, leading to systemic and chronic inflammatory conditions. The continuous chronic systemic inflammation may be a trigger of neuroinflammation, which is the prominent feature of a variety of neurological disorders. It implies that there may be a causal link between periodontal diseases and neurological disorders. This article presents epidemiological and biological evidences that periodontal diseases can induce or exacerbate neurological disorders, including Alzheimer's disease, Parkinson's disease, multiple sclerosis and major depressive disorder, and analyzes the possible mechanisms. The importance of maintaining oral health as well as preventing and treating periodontal diseases are emphasized. At the same time, this may provide novel approaches to study the relationship between periodontal diseases and neurological disorders in the prevention and treatment strategies of neurological disorders.
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Affiliation(s)
- X B Bai
- Department of General Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine & College of Stomatology, Shanghai Jiao Tong University & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Shanghai Key Laboratory of Stomatology, Shanghai 200011, China
| | - L J Zhou
- Department of General Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine & College of Stomatology, Shanghai Jiao Tong University & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Shanghai Key Laboratory of Stomatology, Shanghai 200011, China
| | - W Z Lin
- Department of General Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine & College of Stomatology, Shanghai Jiao Tong University & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Shanghai Key Laboratory of Stomatology, Shanghai 200011, China
| | - Y Q Zhu
- Department of General Dentistry, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine & College of Stomatology, Shanghai Jiao Tong University & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Shanghai Key Laboratory of Stomatology, Shanghai 200011, China
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9
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Chen TY, Ge YL, Liu XW, Zhu YQ, Chen ZM, Tian L, Zhu YY, Zhang X, Zhang HZ. [Molecular epidemiological characteristics of methicillin-resistant Staphylococcus aureus during 2017-2018 at a hospital in Shanghai]. Zhonghua Yu Fang Yi Xue Za Zhi 2020; 54:849-853. [PMID: 32842314 DOI: 10.3760/cma.j.cn112150-20190819-00669] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To identify the epidemic clones of MRSA isolates at a hospital in shanghai. Methods: A total of 72 MRSA isolates have been isolated from a second grade hospital between 2017 and 2018, including 32 CA-MRSA isolates, 13 HA-MRSA isolates and 26 MRSA isolates from environment. In this study, MLST and PFGE typing methods were used to analyze the molecular epidemiology of the MRSA isolates. Results: A total of 72 MRSA isolates have been obtained including 46 isolates from clinical specimens, 26 isolates from environments. The 46 MRSA isolates from clinical specimens consisted of 33 CA-MRSA (community-acquired MRSA) and 13 HA-MRSA (hospital-acquired MRSA). Furthermore, these patients infected with MRSA isolates were mostly distributed in the department of geriatrics (34.8%, 16/46), internal medicine (26.1%, 12/46) and surgery (26.1%, 12/46). MLST typing results showed that ST764 was predominant in isolates from both clinical specimens and hospital environments. Furthermore, PFGE typing results showed that most ST764 MRSA had high homolog (>90%). Conclusion: ST764 MRSA isolates might spread in community, hospital and environments. Therefore, continuous monitoring of MRSA and its variation may be useful in understanding the involvement of epidemic clone, and in searching new strategies to control MRSA infection.
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Affiliation(s)
- T Y Chen
- Department of Pathogenic identification, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
| | - Y L Ge
- Department of Pathogenic identification, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
| | - X W Liu
- Department of Pathogenic identification, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
| | - Y Q Zhu
- Department of Pathogenic identification, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
| | - Z M Chen
- Department of Pathogenic identification, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
| | - L Tian
- Department of Acute Communicable Disease Control and Prevention, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
| | - Y Y Zhu
- Department of Pathogenic identification, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
| | - X Zhang
- Department of Pathogenic identification, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
| | - H Z Zhang
- Department of Pathogenic identification, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
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10
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Dai Y, Li ZP, Xu H, Zhu L, Zhu YQ, Cheng H, Chen ZB, Huang QZ, Lei L, Li RQ, Li G, Li Y, Liao M, Lu QH, Shi XP, Sun HJ, Shi TL, Wu XX, Wang ZS, Xu J, Zhao G, Zhang GY, Chen C. [A multicenter survey of the accessibility of essential medicines for children in China]. Zhonghua Er Ke Za Zhi 2020; 58:301-307. [PMID: 32234137 DOI: 10.3760/cma.j.cn112140-20190820-00527] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the availability, prices and affordability of essential medicines in pediatric population across China, in the hope of improving rational use of medicines. Methods: A multicenter cross-sectional survey of medicine prices, availability and affordability was conducted in 17 provinces, municipalities and autonomous region across east, south-central part, west and north of China. Data on 42 medicines used in pediatric population, both original and generic, were collected in 55 public hospitals from May 26 to June 2, 2017. Availability was expressed as the percentage of hospitals with stock of the target medicine on the day of data collection,and median price ratio (MPR) was the ratio of price upon investigation to international reference. Based on national minimum daily wage, affordability represents the number of working days needed to earn the expense which covers a standard course using the target medicine. Statistical software SPSS 13.0 was applied for descriptive analysis of availability, MPR and affordability. Results: Mean Availability of original and generic medicine was 33% and 32%, with median MPR being 5.43 and 1.55. Among the 19 medicines with price information for both original and generic product, the median MPR was 7.73 and 2.04 respectively. Regarding the five medicines used to treat four common pediatric diseases (pneumonia,peptic ulcer, congenital hypothyroidism, refractory nephrotic syndrome), the affordability was 0.63 (0.16-6.17) d for generic medicine, and 1.03 (0.16-11.53) d for its original counterpart. Conclusions: The availability to both original and generic products of the 42 medicines used in pediatric population was low in China. The prices of generic medicines seem to be lower and affordability higher than those of original medicines. There is an urgent need to improve the availability and affordability of pediatric medicines.
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Affiliation(s)
- Y Dai
- Department of Neonatology, Children's Hospital of Fudan University, Shanghai 201102, China
| | - Z P Li
- Department of Pharmacy, Children's Hospital of Fudan University,Shanghai 201102, China
| | - H Xu
- Department of Nephrology, Children's Hospital of Fudan University,Shanghai 201102, China
| | - L Zhu
- Department of Pharmacy, Children's Hospital of Fudan University,Shanghai 201102, China
| | - Y Q Zhu
- Department of Pharmacy, Children's Hospital of Fudan University,Shanghai 201102, China
| | - H Cheng
- Department of Pharmacy, Xi'an Children's Hospital, Xi'an 710003, China
| | - Z B Chen
- Department of Pharmacy, Shenzhen Children's Hospital, Shenzhen 518038, China
| | - Q Z Huang
- Department of Pharmacy, Fuzhou Children's Hospital, Fuzhou 350005, China
| | - L Lei
- Department of Pharmacy, Children's Hospital of Urumqi, Urumqi 830000, China
| | - R Q Li
- Department of Pharmacy, Kunming Children's Hospital, Kunming 650228, China
| | - G Li
- Department of Pharmacy, Chengdu Women's and Children's Central Hospital, Chengdu 610091, China
| | - Y Li
- Department of Pharmacy, Qingdao Women and Children's Hospital, Qingdao 266000, China
| | - M Liao
- Department of Pharmacy, Guiyang Maternal and Child Health Hospital, Guiyang 550003, China
| | - Q H Lu
- Department of Pharmacy, Jiangxi Provincial Children's Hospital, Nanchang 330006, China
| | - X P Shi
- Department of Pharmacy, Dalian Children's Hospital,Dalian 116012,China
| | - H J Sun
- Department of Pharmacy, Children's Hospital of Shanghai, Shanghai 200062, China
| | - T L Shi
- Department of Pharmacy, the First Affiliated Hospital of University of Science and Technology of China, Anhui Provincial Hospital, Hefei 230001,China
| | - X X Wu
- Department of Pharmacy, Qilu Children's Hospital of Shandong University, Jinan 250022,China
| | - Z S Wang
- Department of Pharmacy, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - J Xu
- Department of Pharmacy, Children's Hospital of Nanjing Medical University, Nanjing 210019, China
| | - G Zhao
- Department of Pharmacy, Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region, Nanning 530003, China
| | - G Y Zhang
- Department of Pharmacy, Hebei Children's Hospital, Shijiazhuang 050031, China
| | - C Chen
- Department of Neonatology, Children's Hospital of Fudan University, Shanghai 201102, China
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11
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Zhu YQ, Zhao MY, Gu XC, Teng GJ. [Evaluation of neurovascular function in mouse cortex using multispectral optical imaging after ischemic stroke]. Zhonghua Yi Xue Za Zhi 2019; 99:2943-2946. [PMID: 31607027 DOI: 10.3760/cma.j.issn.0376-2491.2019.37.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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 acquire the signal of neuron excitability and blood oxygen in mouse cortex after ischemic stroke, and to clarify the relationship between the change of neurovascular function and the degree of cerebral infarction. Methods: The male C57BL/6 mouse(n=20) about 6-8 weeks and 20 g weight were produced the embolic stroke modal by photochemical injury. The mouse cortex was scanned by the multispectral optical imaging while using electric stimulation in 1, 3 and 7 d after operation. Then several data around the infarction were acquired including neuron excitability, the total hemoglobin concentration and deoxygenated hemoglobin concentration. The ischemic cerebral infarction size was analyzed by TTC staining. Plasma TNF-α concentration was measured by enzyme-linked immunosorbent assay(ELISA). And modified neurological severity score (mNSS) was recorded after ischemic stroke(n=30). Then correlativity analysis was used between the optical signals and three indicators of cerebral infarction degree. Results: The changes of neuron excitability signals were 1.15%±0.28%, 2.84%±1.06%, 2.21%±0.55%. The total hemoglobin concentration signals were 3.71%±2.76%,3.19%±2.70%,4.27%±3.05%. The deoxygenated hemoglobin concentration signals were 2.93%±2.33%, 3.60%±1.74%, 2.08%±1.28%. The neural signal was correlated to cerebral infarction size, plasma TNF-α concentration and mNSS(r=-0.441, -0.449,-0.404, all P<0.05), and mNSS had a great effect on neuron excitability(β=-0.169,P<0.05). Meanwhile, the total hemoglobin concentration was correlated to cerebral infarction size(r=0.440,P<0.05). Conclusion: The signal of neuron and blood oxygen is able to represent the change of neurovascular function and evaluate the progression of ischemic stroke.
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Affiliation(s)
- Y Q Zhu
- Medical School of Southeast University, Jiangsu Key Lab of Molecule Imaging and Functional Imaging, Nanjing 210009, China
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12
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Zhu YQ, Ma SP, Dong WG, Zhang JX, Zhang Y. [Correlation between serum interleukin-38 and acute exacerbation of chronic obstructive pulmonary disease with pulmonary embolism]. Zhonghua Yi Xue Za Zhi 2019; 99:929-933. [PMID: 30917443 DOI: 10.3760/cma.j.issn.0376-2491.2019.12.010] [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] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the correlation between serum interleukin-38 (IL-38) and acute exacerbation of chronic obstructive pulmonary disease (AECOPD) with pulmonary embolism (PE). Methods: The 94 patients with AECOPD admitted to Tianjin Chest Hospital from August 2015 to April 2018 were suspected of PE. They were divided into two groups based on CT pulmonary angiography (CTPA) and color Doppler ultrasound of lower extremity veins: 39 cases in PE group and 55 cases in Non-PE group. The general data and laboratory examination results of these subjects were recorded. Serum IL-38 was measured by double antibody enzyme-linked immunosorbent assays (ELISA). The between-group differences of above parameters were analyzed. Pearson correlation or Spearman rank correlation was used to analyze the association of IL-38 with each variable in AECOPD patients. Binary Logistic regressions were conducted to determine the risk factors of AECOPD with PE. ROC curve was used to assess the value of serum IL-38 in predicting AECOPD with PE. Results: The serum level of IL-38 was lower in PE group than in Non-PE group [46.3 (33.1, 58.1) vs 61.5 (46.6, 72.5) ng/L, P<0.05]. Correlation analysis showed that serum IL-38 levels were negatively correlated with C reactive protein and fibrinogen in patients with AECOPD (r=-0.38,-0.29, all P<0.05). Binary Logistic regressions showed that lower serum IL-38 level was a risk factor of AECOPD with PE (OR=0.78, 95%CI: 0.61-0.94, P<0.05). The area under the ROC curve was 0.74 (95% CI: 0.63-0.84, P<0.05). When cutoff value of serum IL-38 was 52.1ng/L, the sensitivity was 70.9% and the specificity was 69.2% respectively. Conclusion: IL-38 could relieve the hypercoagulability by inhibiting inflammation in patients with AECOPD and could act as a predictor of AECOPD with PE.
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Affiliation(s)
- Y Q Zhu
- Department of Respiratory and Critical Care Medicine, Tianjin Chest Hospital, Tianjin 300222, China
| | - S P Ma
- Department of Respiratory and Critical Care Medicine, Tianjin Chest Hospital, Tianjin 300222, China
| | - W G Dong
- Department of Respiratory and Critical Care Medicine, Tianjin Chest Hospital, Tianjin 300222, China
| | - J X Zhang
- Department of Nutrition, Tianjin Chest Hospital, Tianjin 300222, China
| | - Y Zhang
- Tianjin Cardiovascular Institute, Tianjin 300222, China
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13
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Zhu YQ, Ma SP, Li B, Zheng CY, Ma J. [Interleukin-38 expression and clinical significance in serum of patients with chronic obstructive pulmonary disease]. Zhonghua Yi Xue Za Zhi 2018; 98:759-762. [PMID: 29562401 DOI: 10.3760/cma.j.issn.0376-2491.2018.10.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the serum level of interleukin-38 (IL-38) and its clinical significance in patients with chronic obstructive pulmonary disease (COPD). Methods: Totally 72 patients with acute exacerbation of COPD (AECOPD group) and 65 patients with stable COPD (S-COPD group) were recruited from Tianjin Chest Hospital from June 2016 to August 2017. In the same period 40 elderly healthy subjects were selected as control group (C group). The general data and laboratory examination results of these subjects were recorded. Serum IL-38 was measured by double antibody enzyme-linked immunosorbent assays (ELISA). The inter-group differences of above parameters were analyzed. Pearson correlation or Spearman rank correlation analysis was used to analyze the correlation between IL-38 and each variable, and multivariate stepwise regression analysis was used to determine the influencing factors of serum IL-38 in COPD patients. Results: The serum level of IL-38 was higher in AECOPD group than in S-COPD group[(57.88±13.72) vs (51.75±14.06) ng/L, P<0.05], and was higher in either of the two COPD groups than in C group[(46.37±13.18) ng/L](both P<0.05). Correlation analysis of single factor showed that serum IL-38 levels were positively correlated with body mass index (r=0.190, P<0.05), and negatively correlated with C reactive protein (CRP), fibrinogen (FIB), forced expiratory volume in one second as a percentage of estimated value (FEV1%pred) and the number of acute exacerbations in the past 1 year (r=-0.344, -0.176, -0.195, -0.229, all P<0.05). The CRP level and the number of acute exacerbations in the past 1 year were independent factors affecting the serum level of IL-38 (β=-0.204, -0.183, both P<0.05) in patients with COPD. Conclusion: IL-38 is compensatory increased in serum of patients with COPD and may be used as one of the serological markers for evaluation of COPD.
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Affiliation(s)
- Y Q Zhu
- Department of Respiratory and Critical Care Medicine, Tianjin Chest Hospital, Tianjin 300222, China
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14
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Zhu L, Jin F, Zhu YQ, Wang JC, Dong KF, Mo WQ, Song JL, Ouyang J. Giant Magneto-Impedance (GMI) Effect in Single-Layer Soft Magnetic Film Under Stress. J Nanosci Nanotechnol 2018; 18:8195-8200. [PMID: 30189937 DOI: 10.1166/jnn.2018.15799] [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] [Indexed: 06/08/2023]
Abstract
The stress-induced magnetic anisotropy can significantly affect giant magneto-impedance (GMI) effect of the soft magnetic film. This paper is devoted to the GMI effect of the single layer soft magnetic film implied without and with a stress. By simulating a physical model with MATLAB and COMSOL software, the impedance expression of the single layer soft magnetic film and the relation between external magnetic field and magnetic permeability are deduced. We observed that, without a stress, the sensitive region increased firstly and then decreased with the increasing of the excitation current frequency from 1 MHz to 200 MHz. While the film was subjected to the stress in the direction of the current with one end stressed, the stress on the film was gradually reduced from stressed end to free end. Also, the impedance change rate of the film changed when the stress was added, which is similar to the effect of adding a bias magnetic field on the film. More importantly, the addition of stress σ can induce the bias of the GMI measurement range and improve its sensitivity near zero magnetic fields. This may provide a new way for designing a GMI sensor with higher sensitivity and adjustable measurement range.
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Affiliation(s)
- L Zhu
- School of Automation, China University of Geosciences, Wuhan, 430074, China
| | - F Jin
- School of Automation, China University of Geosciences, Wuhan, 430074, China
| | - Y Q Zhu
- School of Automation, China University of Geosciences, Wuhan, 430074, China
| | - J C Wang
- School of Automation, China University of Geosciences, Wuhan, 430074, China
| | - K F Dong
- School of Automation, China University of Geosciences, Wuhan, 430074, China
| | - W Q Mo
- School of Automation, China University of Geosciences, Wuhan, 430074, China
| | - J L Song
- School of Automation, China University of Geosciences, Wuhan, 430074, China
| | - J Ouyang
- Department of Electronic Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, China
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15
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Zhu YQ, Long Q, Xiao QF, Zhang M, Wei YL, Jiang H, Tang B. [The association between blood pressure variability and sleep stability in essential hypertensive patients with sleep disorder]. Zhonghua Yi Xue Za Zhi 2018; 98:755-758. [PMID: 29562400 DOI: 10.3760/cma.j.issn.0376-2491.2018.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the association of blood pressure variability and sleep stability in essential hypertensive patients with sleep disorder by cardiopulmonary coupling. Methods: Performed according to strict inclusion and exclusion criteria, 88 new cases of essential hypertension who came from the international department and the cardiology department of china-japan friendship hospital were enrolled. Sleep stability and 24 h ambulatory blood pressure data were collected by the portable sleep monitor based on cardiopulmonary coupling technique and 24 h ambulatory blood pressure monitor. Analysis the correlation of blood pressure variability and sleep stability. Results: In the nighttime, systolic blood pressure standard deviation, systolic blood pressure variation coefficient, the ratio of the systolic blood pressure minimum to the maximum, diastolic blood pressure standard deviation, diastolic blood pressure variation coefficient were positively correlated with unstable sleep duration (r=0.185, 0.24, 0.237, 0.43, 0.276, P<0.05). Conclusions: Blood pressure variability is associated with sleep stability, especially at night, the longer the unstable sleep duration, the greater the variability in night blood pressure.
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Affiliation(s)
- Y Q Zhu
- Internation Department China-Japan Friendship Hospital, Beijing 100029, China
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16
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Zhu YQ, Liu YH. [A review on group 2 innate lymphoid cells and miR-155 in allergic rhinitis]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:1940-1943. [PMID: 29798323 DOI: 10.13201/j.issn.1001-1781.2017.24.019] [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] [Key Words] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Indexed: 11/12/2022]
Abstract
Allergic rhinitis (AR) is the Th2 inflammatory response that atopic individuals exposure to allergens, mediators released by IgE-mediated, and a variety of immunocompetent cells and cytokines involved .Group 2 innate lymphoid cells (ILC2) are a novel population of native lymphocyte, can secrete large amounts of Th2 cytokines to promote the development of allergic diseases after being activated. MiR-155 plays a vital role in the development of the immune system, the differentiation of immune cells, and the maintenance of immune function.Nasal mucosas from the patients with allergic rhinitis show enrichment for ILC2 and miR-155. Highly expressed miR-155 may enhance the level of IL-4 by promoting ILC2 expression, thereby promoting Th2 inflammatory response.This review focuses on the function and meaning of ILC2 and miR-155 in patients with Allergic rhinitis.
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Affiliation(s)
- Y Q Zhu
- Department of Otolaryngology Head and Neck Surgery, Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
| | - Y H Liu
- Department of Otolaryngology Head and Neck Surgery, Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China
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17
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Gu MH, Su J, Liu CH, Zhu YQ, Shen H, Huang YH, Zhong L, Zhang MH, Li YH. [Epidemiological pattern of abnormal urinary fluoride rates in population with occupational fluoride exposure in Shanghai]. Zhonghua Liu Xing Bing Xue Za Zhi 2017; 38:77-80. [PMID: 28100382 DOI: 10.3760/cma.j.issn.0254-6450.2017.01.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Objective: To investigate the epidemiological features of abnormal urinary fluoride rates in population with occupational exposure, and its relationships with age, work years and gender in Shanghai. Methods: A questionnaire survey was conducted respectively in 4 999 exposed workers and 283 non-exposed people during 2012-2015. Their urine samples were collected in plastic bottles and the fluoride ion selective electrode method was used for urinary fluoride level analysis. Logistic regression model was used to estimate associations between the abnormal rates and demographic/socioeconomic status of the study subjects. Results: In the past 4 years, the abnormal urinary fluoride rates (≥1.6 mg/L) in the population with occupational exposure was about 14.38%, it was about 1.43% in the control groups without occupational exposure. Their geometric mean of urinary fluoride content was 0.95 mg/L and 0.46 mg/L, respectively. The incidences of the abnormal rates in those aged ≥50 years and 34-39 years were 19.15% and 22.39%, respectively. The abnormal rate in males was 16.87%, much higher than that in females (6.85%). The abnormal rate had an upward trend along with the increased work years, especially in those with work years of ≥20 years. The abnormal rate was 23.28% in those with work years of ≥20 years and 13.29% in those with work years of <4 years. The relative risk for abnormal urinary fluoride rates was higher in male group, older age group and longer work year group, the odds ratio was 2.28, 1.10 and 1.13, respectively. Conclusions: Serious challenges exist in occupational health supervision. The relevant national standards should be updated as soon as possible. Males, those aged >50 years, and those with longer work years are the risk groups for intervention measures. More efforts are needed, such as strengthening the innovative application of health examination data and the equalization of basic public health service with comprehensive occupational health supervision programs among off-farm workers in the new medical reform.
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Affiliation(s)
- M H Gu
- Outpatient Department, Shanghai Institute of Preventive Medicine, Shanghai 200070, China
| | - J Su
- Department of Social Services and Public Health Assessment, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
| | - C H Liu
- Outpatient Department, Shanghai Institute of Preventive Medicine, Shanghai 200070, China
| | - Y Q Zhu
- Outpatient Department, Shanghai Institute of Preventive Medicine, Shanghai 200070, China
| | - H Shen
- Outpatient Department, Shanghai Institute of Preventive Medicine, Shanghai 200070, China
| | - Y H Huang
- Outpatient Department, Shanghai Institute of Preventive Medicine, Shanghai 200070, China
| | - L Zhong
- Outpatient Department, Shanghai Institute of Preventive Medicine, Shanghai 200070, China
| | - M H Zhang
- Outpatient Department, Shanghai Institute of Preventive Medicine, Shanghai 200070, China
| | - Y H Li
- Department of Social Services and Public Health Assessment, Shanghai Municipal Center for Disease Control and Prevention, Shanghai 200336, China
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18
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Ge HF, Liu XQ, Zhu YQ, Chen HQ, Chen GZ. Invasive pulmonary fungal infections in patients with connective tissue disease: a retrospective study from northern China. Braz J Med Biol Res 2016; 49:e5531. [PMID: 27683823 PMCID: PMC5044799 DOI: 10.1590/1414-431x20165531] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Accepted: 07/25/2016] [Indexed: 11/21/2022] Open
Abstract
Invasive pulmonary fungal infection (IPFI) is a potentially fatal complication in patients with connective tissue disease (CTD). The current study aimed to uncover the clinical characteristics and risk factors of patients with IPFI-CTD. The files of 2186 CTD patients admitted to a single center in northern China between January 2011 and December 2013 were retrospectively reviewed. A total of 47 CTD patients with IPFI were enrolled into this study and assigned to the CTD-IPFI group, while 47 uninfected CTD patients were assigned to the control group. Clinical manifestations were recorded, and risk factors of IPFI were calculated by stepwise logistical regression analysis. Forty-seven (2.15%) CTD patients developed IPFI. Systemic lupus erythematosus patients were responsible for the highest proportion (36.17%) of cases with IPFI. Candida albicans (72.3%) accounted for the most common fungal species. CTD-IPFI patients had significantly elevated white blood cell count, erythrocyte sedimentation rate, C-reactive protein and fasting glucose values compared to controls (P<0.05). Cough, sputum and blood in phlegm were the most common symptoms. Risk factors of IPFI in CTD included maximum prednisone dose ≥30 mg/day within 3 months prior to infection, anti-microbial drug therapy, and interstitial pneumonia. CTD patients who have underlying interstitial pneumonia, prior prednisone or multiple antibiotics, were more likely to develop IPFI.
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Affiliation(s)
- H F Ge
- Department of Dermatology, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, Shandong, China
| | - X Q Liu
- Department of Dermatology, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, Shandong, China
| | - Y Q Zhu
- Laboratory Department, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, Shandong, China
| | - H Q Chen
- Department of Dermatology, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, Shandong, China
| | - G Z Chen
- Department of Dermatology, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, Shandong, China
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Zhu YQ, Long Q, Wang C, Shuai XJ, Chen B, Kong J, Wei YL. [Relationship between sleep architecture and blood pressure dynamic change in patients with sleep apnea syndrome]. Zhonghua Yi Xue Za Zhi 2016; 96:2220-3. [PMID: 27480652 DOI: 10.3760/cma.j.issn.0376-2491.2016.28.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To investigate sleep architecture and blood pressure dynamic change in patients with Sleep apnea syndrome by electrocardiogram-based cardiopulmonary coupling analysis system. METHODS Seventy-nine sleep disorder participants (PSQI≥8) were enrolled. Electrocardiogram-based cardiopulmonary coupling analysis device and ambulatory blood pressure monitoring were synchronously used to evaluate sleep architecture and blood pressure circadian rhythm. The patients were divided into SAS group (47 participants) and non-SAS group (32 participants) according to the Apnea Hypopnea Index (AHI) that calculated by CPC device. The data of sleep architecture and blood pressure variability were compared between two groups. RESULTS Compared with non-SAS group, SAS group have less proportion of deep sleep, more proportion of light sleep, higher mean blood pressure in 24 hours and daytime, lower nocturnal blood pressure dipping, faster mean heart rate in night time (P<0.05). AHI has moderate inverse correlation with deep sleep time, wake/dream time (-0.6≤r<-0.3), moderate positive correlation with light sleep time (0.3<r≤0.6), high inverse correlation with nocturnal blood pressure dipping (r=-0.785, P=0.000), moderate positive correlation with mean diastolic blood pressure (r=0.425, P=0.019). CONCLUSION Our study shows that less proportion of deep sleep, more proportion of light sleep, 24 hours mean blood pressure and nocturnal blood pressure increase in the patients with Sleep Apnea Syndrome. The severity of Sleep Apnea Syndrome has a positive correlation with the severity of abnormal sleep architecture and the degree of blood pressure elevation.
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Affiliation(s)
- Y Q Zhu
- Internation Medical Center, China-Japan Friendship Hospital, Beijing 100029, China
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20
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Abstract
The purpose of this study was to evaluate the clinical efficacy of initial periodontal therapy in gingival pregnancy tumors. Thirty-nine patients diagnosed with gingival tumors of pregnancy between 2007 and 2015 were enrolled in this study. The patients received initial periodontal therapy, then supportive periodontal therapies at 3- to 6-month intervals. The patients underwent follow up for 6 months to 8 years after treatment. After plaque control, supragingival scaling, and root planning, the tumors in 25 patients were gradually eliminated without the necessity of surgery. In 3 patients, tumors <5 mm in size disappeared in a mean time of 3.6 months, 4 patients with tumors 5-10 mm disappeared in a time of 7.5 months, 11 patients with tumors 10-15 mm disappeared in 10.2 months, 6 patients with tumors 15-20 mm disappeared in 15 months, and one patient with a tumor >20 mm disappeared in 20 months. No recurrence of gingival pregnancy tumors was noted during subsequent follow-up. Initial periodontal therapy combined with oral hygiene maintenance is efficacious in treating gingival pregnancy tumors of patients with normal hormone levels, which can potentially serve as an option to avoid surgery.
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Affiliation(s)
- Y Q Zhu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei Province, China.,Department of Periodontology, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei Province, China.,The Affiliated Huizhou Stomatologic Hospital of Jinan University & Huizhou Stomatologic Hospital, Huizhou, Guangdong Province, China
| | - Y Q Wang
- The Affiliated Huizhou Stomatologic Hospital of Jinan University & Huizhou Stomatologic Hospital, Huizhou, Guangdong Province, China
| | - Y C Tang
- The Affiliated Huizhou Stomatologic Hospital of Jinan University & Huizhou Stomatologic Hospital, Huizhou, Guangdong Province, China
| | - C Z Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei Province, China.,Department of Periodontology, School & Hospital of Stomatology, Wuhan University, Wuhan, Hubei Province, China
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21
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Rouchaud A, Brinjikji W, Ding YH, Dai D, Zhu YQ, Cloft HJ, Kallmes DF, Kadirvel R. Evaluation of the Angiographic Grading Scale in Aneurysms Treated with the WEB Device in 80 Rabbits: Correlation with Histologic Evaluation. AJNR Am J Neuroradiol 2016; 37:324-9. [PMID: 26405081 DOI: 10.3174/ajnr.a4527] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 07/14/2015] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE The WEB Occlusion Score has been proposed to assess angiographic outcomes for intracranial aneurysms treated with the Woven EndoBridge (WEB) device. Using a large series of experimental aneurysms treated with the WEB, we had the following objectives: 1) to compare angiographic outcomes as measured by the WEB Occlusion Scale with histologic results, and 2) to assess interobserver and intraobserver agreement of the WEB Occlusion Scale. MATERIALS AND METHODS Intracranial aneurysms were created in 80 rabbits and treated with WEB devices. Animals were sacrificed at last follow-up for histologic evaluation. DSA was performed just after the deployment of the device and at follow-up. Four investigators independently and retrospectively graded the DSA twice according to the WEB Occlusion Scale. One histopathologist blinded to the angiographic results graded the occlusion according to a 4-point scale patterned on the WEB Occlusion Scale. Intra- and interobserver agreement were evaluated for DSA. Follow-up angiographic grading and histologic reference were compared to determine the WEB Occlusion Scale accuracy for complete (with or without recess filling) versus incomplete occlusion and adequate (complete occlusion or neck remnant) versus inadequate occlusion. RESULTS Inter- and intraobserver weighted κ for the angiographic WEB Occlusion Scale were, respectively, 0.76 and 0.76, indicating substantial agreement. The sensitivity and specificity of the WEB Occlusion Scale for complete occlusion at follow-up compared with the histologic reference standard were, respectively, 75% and 83.3%, with an overall accuracy of 80%. Similarly, for adequate occlusion at follow-up, sensitivity was 97.7%, specificity was 64.9%, and overall accuracy was 82.5%. CONCLUSIONS The WEB Occlusion Scale appears to be consistent, reliable, and accurate compared with a histologic reference standard.
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Affiliation(s)
- A Rouchaud
- From the Neuroradiology Research Laboratory (A.R., Y.-H.D., D.D., Y.Q.Z., D.F.K., R.K.), Mayo Clinic College of Medicine, Rochester, Minnesota the Department of Radiology (A.R., W.B., H.J.C., D.F.K.), Mayo Clinic, Rochester, Minnesota.
| | - W Brinjikji
- the Department of Radiology (A.R., W.B., H.J.C., D.F.K.), Mayo Clinic, Rochester, Minnesota
| | - Y-H Ding
- From the Neuroradiology Research Laboratory (A.R., Y.-H.D., D.D., Y.Q.Z., D.F.K., R.K.), Mayo Clinic College of Medicine, Rochester, Minnesota
| | - D Dai
- From the Neuroradiology Research Laboratory (A.R., Y.-H.D., D.D., Y.Q.Z., D.F.K., R.K.), Mayo Clinic College of Medicine, Rochester, Minnesota
| | - Y Q Zhu
- From the Neuroradiology Research Laboratory (A.R., Y.-H.D., D.D., Y.Q.Z., D.F.K., R.K.), Mayo Clinic College of Medicine, Rochester, Minnesota
| | - H J Cloft
- the Department of Radiology (A.R., W.B., H.J.C., D.F.K.), Mayo Clinic, Rochester, Minnesota
| | - D F Kallmes
- From the Neuroradiology Research Laboratory (A.R., Y.-H.D., D.D., Y.Q.Z., D.F.K., R.K.), Mayo Clinic College of Medicine, Rochester, Minnesota the Department of Radiology (A.R., W.B., H.J.C., D.F.K.), Mayo Clinic, Rochester, Minnesota
| | - R Kadirvel
- From the Neuroradiology Research Laboratory (A.R., Y.-H.D., D.D., Y.Q.Z., D.F.K., R.K.), Mayo Clinic College of Medicine, Rochester, Minnesota
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Zhu YQ, Chen BL, Bi ZW, Kou ZQ, Hu B, Fang M, Bi ZQ. [Meta-analysis on epidemiology of iatrogenic-borne methicillin-resistant Staphylococcus aureus]. Zhonghua Liu Xing Bing Xue Za Zhi 2016; 37:273-280. [PMID: 26917530 DOI: 10.3760/cma.j.issn.0254-6450.2016.02.025] [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: 06/05/2023]
Abstract
OBJECTIVE To study the molecular-biologic characteristics and epidemiological status of iatrogenic related Community-acquired methicillin-resistant Staphylococcus (S.) aureus (CA-MRSA) in China through Meta-analysis. METHODS Data through systematic searching for peer-reviewed articles published before December 3(rd), 2015 from 4 main electronic databases including China National Knowledge Infrastructure (CNKI), Wanfang Data, PubMed and Web of Science Core Collection was collected, for this Meta-analysis. PRISMA guidelines were followed and the proportion of MRSA, CA-MRSA, hospital-acquired MRSA (HA-MRSA) and panton-valentine leucocidin (PVL) gene in certain populations were quantitatively analyzed by Stata 13.0 software. RESULTS Average proportion of CA-MRSA from S. aureus was 12% (95%CI: 8%-16%). CA-MRSA in MRSA was 18% (95%CI: 12%-24%). 42.1% (95%CI: 20.4%-63.7%) of the CA-MRSA carried a PVL gene, and the number was higher than general MRSA (t=-2.99,P=0.011). CONCLUSION CA-MRSA was in lower proportion than HA-MRSA, both seen in general MRSA and in S. aureus, but under higher proportion of carrying the PVL gene. Transmission of CA-MRSA could be prevented within the general population through conducting effective surveillances and preventive programs.
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Affiliation(s)
- Y Q Zhu
- Department of Epidemiology and Biostatistics, Shandong University, Jinan 250012, China
| | - B L Chen
- Institute of Bacterial Infections Disease Control, Shandong Provincial Center for Disease Control and Prevention, Jinan 250014, China
| | - Z W Bi
- Institute of Bacterial Infections Disease Control, Shandong Provincial Center for Disease Control and Prevention, Jinan 250014, China
| | - Z Q Kou
- Institute of Bacterial Infections Disease Control, Shandong Provincial Center for Disease Control and Prevention, Jinan 250014, China
| | - B Hu
- Institute of Bacterial Infections Disease Control, Shandong Provincial Center for Disease Control and Prevention, Jinan 250014, China
| | - M Fang
- Institute of Bacterial Infections Disease Control, Shandong Provincial Center for Disease Control and Prevention, Jinan 250014, China
| | - Z Q Bi
- Shandong Key Laboratory of Infectious Disease Prevention and Control, Institute of Preventive Medicine, Shandong University Jinan 250012, China; Department of Epidemiology and Biostatistics, Shandong University, Jinan 250012, China; Institute of Bacterial Infections Disease Control, Shandong Provincial Center for Disease Control and Prevention, Jinan 250014, China
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Li W, Qiao X, Li M, Zheng Q, Ren Q, Zhu YQ, Peng HX. Self-Assemblies of Acicular Hollow Fe/C Nanostructures. J Nanosci Nanotechnol 2015; 15:5845-5850. [PMID: 26369160 DOI: 10.1166/jnn.2015.9089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Self-assemblies of acicular hollow Fe/C structures were synthesized using D-glucose monohydrate and ferric chloride as precursors by a simple hydrothermal process followed by carbonization at 800 °C. The self-assembled structures with an overall diameter of 15~20 µm composed of radially formed hollow needles from a central core with an average diameter of ca. 1 µm and a length up to 10 µm. The end of the needles was revealed to be a awl shape with a hollow structure formed during the self-assembly process and the subsequent heat treatment. The hollow structure was probably caused by the Kirkendall effect at 800 °C. The materials exhibit ferromagnetic characteristic with saturation magnetization (Ms), remanent magnetization (Mr), and coercivity (Hc) of 22.2 emu/g, 3 emu/g, and 151.22 Oe, respectively, with Ms much lower than that of Fe3O4.
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Abstract
Owing to their prokaryotic origin, plastid rRNAs are mainly 23s/16s/5s rRNAs. We present a novel plant RNA isolation method in this paper. Also, not only the eukaryotic 28s (26s, 25s)/18s rRNAs but the prokaryotic 26s/23s rRNAs as well were demonstrated in a single sample for the first time by formaldehyde denaturing agarose gel electrophoresis.
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Affiliation(s)
- Y Q Zhu
- School of Life Sciences, Tsinghua University, Beijing, China
| | - Y Zheng
- School of Life Sciences, Tsinghua University, Beijing, China
| | - H B Chen
- School of Life Sciences, Tsinghua University, Beijing, China
| | - L Q Huang
- School of Life Sciences, Tsinghua University, Beijing, China
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Abstract
We conducted a hospital-based case-control study to investigate the associations of dietary intake of folate and MTHFR C677T and A1298C polymorphisms with breast cancer in a Chinese population. A 1:1-matched case-control study was conducted. Two hundred and thirty patients who were newly diagnosed and histologically confirmed breast cancer and 230 controls were enrolled from Xinxiang Central Hospital. Folate intake was calculated by standard portion size and relative size for each food item in the questionnaire. Genotyping of MTHFR C677T and A1298C was performed by PCR-RFLP. MTHFR 677TT (OR = 2.26, 95%CI = 1.09-4.87, P = 0.02) and T allele (OR = 1.40, 95%CI = 1.03-1.90, P = 0.03) had an increased risk of laryngeal cancer when compared with the CC genotype. We found any interaction between MTHFR C677T and folate intake (P for interaction = 0.02). In conclusion, our study demonstrated that MTHFR C677T polymorphism and folate are associated with risk of breast cancer.
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Affiliation(s)
- Z G Wang
- Medical Image Center, Xinxiang Central Hospital, Xinxiang, China
| | - W Cui
- Special-Needed Hospital Ward, Xinxiang Central Hospital, Xinxiang, China
| | - L F Yang
- Special-Needed Hospital Ward, Xinxiang Central Hospital, Xinxiang, China
| | - Y Q Zhu
- Health Check Centre, Xinxiang Central Hospital, Xinxiang, China
| | - W H Wei
- Special-Needed Hospital Ward, Xinxiang Central Hospital, Xinxiang, China
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26
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Zhu YQ, Wu WJ, Xiao HW, Chen HB, Zheng Y, Zhang YJ, Wang HX, Huang LQ. A generic plant RNA isolation method suitable for RNA-Seq and suppression subtractive hybridization. Genet Mol Res 2013; 12:5537-46. [PMID: 24301924 DOI: 10.4238/2013.november.18.4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
A recently developed revolutionary approach to transcriptomics, RNA-Seq, and suppression subtractive hybridization are powerful tools for gene expression research. However, currently, the difficulty of isolating high-quality RNAs from plant tissues bearing abundant complex polysaccharides, polyphenolics, and secondary metabolites is a serious problem that not only limits the application of these technologies but also hinders studies dealing with RNA in general. We have developed a consistent protocol to prepare highly intact and pure RNAs from tissues of a variety of field-grown plant species, with high yields, in 2 to 3 h. Additionally, this method can be readily applied to mammalian, yeast, and bacterial cells.
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Affiliation(s)
- Y Q Zhu
- School of Life Sciences, Tsinghua University, Beijing, China
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Zhu YQ, Cui WG, Cheng YS, Chang J, Chen NW, Yan L, Li MH. Biodegradable rapamycin-eluting nano-fiber membrane-covered metal stent placement to reduce fibroblast proliferation in experimental stricture in a canine model. Endoscopy 2013; 45:458-68. [PMID: 23580413 DOI: 10.1055/s-0032-1326399] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
BACKGROUND AND STUDY AIMS The aim of the current study was to assess whether placement of the biodegradable rapamycin-eluting nano-fiber membrane-covered metal stent is followed by less fibroblast proliferation and tissue hyperplasia compared with bare stents in experimental stricture in a dog model. METHODS A total of 80 dog models of stricture were randomly divided into a control group (n = 20, no stent insertion), a bare stent group (BSG, n = 20, 1-week retention), and two drug-eluting stent sub-groups (DESG-1w, n = 20, 1-week retention; DESG-4w, n = 20, 4-week retention). Lower esophageal sphincter (LES) pressure, 5-minute barium height (5-mBH), and cardia diameter were assessed before, immediately after the procedure, and regularly thereafter for 6 months. Five dogs in each group were euthanized for histological examination at each follow-up assessment. RESULTS Stent insertion was well tolerated, with similar migration rates (0 % in BSG vs. 7.5 % in DESGs; P = 0.5441). At 6 months, LES pressure and 5-mBH improved in DESG-1w (26.70 ± 5.02 mmHg and 6.50 ± 2.98 cm) and DESG-4w (20.16 ± 5.50 mmHg and 1.54 ± 0.98 cm) compared with BSG (39.94 ± 5.22 mmHg and 11.1 ± 5.46 cm) (P < 0.05), with DESG-4w being more stable than DESG-1w (P < 0.05). The cardia maintained greater patency in the DESGs (7.10 ± 3.09 mm in DESG-1w; 9.16 ± 3.77 mm in DESG-4w) than in the BSG (1.86 ± 2.45 mm; P < 0.05). Reduced peak inflammatory reactions and scarring occurred in DESGs compared with the BSG (P < 0.05), with a better outcome in DESG-4w than in DESG-1w (P < 0.05). CONCLUSIONS In this experimental stricture model, rapamycin-eluting stents were more effective than bare stents for the reduction of fibroblast proliferation and tissue hyperplasia after stent placement. Furthermore, 4-week retention of the drug-eluting stent led to a better outcome than 1-week retention.
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Affiliation(s)
- Y Q Zhu
- Department of Radiology, The Sixth Affiliated People's Hospital, Medical school of Shanghai Jiao Tong University, Shanghai, China
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Li YH, Zhao YM, Hu WB, Ahmad I, Zhu YQ, Peng XJ, Luan ZK. Carbon nanotubes - the promising adsorbent in wastewater treatment. ACTA ACUST UNITED AC 2007. [DOI: 10.1088/1742-6596/61/1/140] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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29
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Zhao YM, Li YH, Jin YZ, Zhang XP, Hu WB, Ahmad I, McCartney G, Zhu YQ. Growth and characterization of Cu-catalyzed ZnO nanowires. ACTA ACUST UNITED AC 2007. [DOI: 10.1088/1742-6596/61/1/141] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Whitby RLD, Hsu WK, Zhu YQ, Kroto HW, Walton DRM. Novel nanoscale architectures: coated nanotubes and other nanowires. Philos Trans A Math Phys Eng Sci 2004; 362:2127-2142. [PMID: 15370474 DOI: 10.1098/rsta.2004.1432] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Research has demonstrated that the structure and properties of a nanoscale system are inextricably linked. The advent of nanoscale research in 1991 relied upon nanoscale material production through random formation techniques, such as arc discharge, and the inherent properties and morphology of the system were therefore difficult to control. This article reviews some of the methods and ideas that have developed since the inception of nanotechnology, leading to fine control over the morphology of nanoscale systems and highlighting some interesting nanoscale architecture.
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Affiliation(s)
- R L D Whitby
- Department of Chemistry, School of Life Sciences, University of Sussex, Falmer, Brighton, Sussex BN1 9QJ, UK.
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Hong J, Xia WW, Xiong HG, Zhu YQ, Wang XY. [Establishing a FEM of mandibular first molar and stress analysis]. Shanghai Kou Qiang Yi Xue 2001; 10:342-5. [PMID: 14993969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
OBJECTIVE Establishing a finite element model of mandibular first molar with analysis of the stress distribution to each of the tooth parts on the model. METHODS The right mandibular first molar in vitro was scanned and the image was processed. The three dimensional finite-element model was established by the special software and loaded on it. RESULTS Stress distribution on each part of the tooth was obtained. The maximum values of compressive stress, tensile stress and mises stress were calculated. CONCLUSION In the research and analysis of the tooth stress, the finite element method is simple, effective, safe and reliable.
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Affiliation(s)
- J Hong
- Department of Oral Medicine Ninth People's Hospital School of Stomatology, Shanghai Second Medical University, Shanghai 200011, China.
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Abstract
NbS2 nanotubes/rods have been generated successfully employing carbon nanotube template promoted growth; high resolution transmission electron microscopy, coupled with EDX analysis, confirm the template effect and existence of NbS2 tube structures.
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Affiliation(s)
- Y Q Zhu
- Fullerene Science Centre, School of CPES, University of Sussex, Brighton, UK BN1 9QJ.
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33
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Li LS, Zhu YQ, Du YQ. [Advance in stem cell research and clinical application]. Sheng Li Ke Xue Jin Zhan 2001; 32:138-40. [PMID: 12545884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
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Ma XH, Zhu YQ, Wang XY. [Experimental study on apical sealing ability of Sankin hydroxyapatite root canal sealer]. Shanghai Kou Qiang Yi Xue 2001; 10:54-5. [PMID: 14994081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
OBJECTIVE To compare the apical sealing ability of Sankin hydroxyapatite root canal sealer with traditional root canal sealers. METHODS Determination of the length of apical dye leakage by methylene leakage test. RESULTS The length of apical dye leakge of Sankin hydroxyapatite root canal sealer was 2.40 mm, that of iodoform paste and zinc oxide eugenol paste was 4.37 mm and 5.80 mm,respectively. There was no significant difference between iodoform paste and zinc oxide-eugenol paste (P>0.05);whereas there was significant difference between Sankin hydroxyapatite root canal sealer and iodoform paste or zinc oxide eugenol paste(P<0.01). CONCLUSION Sankin hydroxyapatite root canal sealer has better apical sealing ability than traditional root canal sealers.
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Affiliation(s)
- X H Ma
- Department of Oral Medicine, School of Stomatology, Shanghai Second Medical University, Shanghai 200011, China
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Westbrock-Wadman S, Sherman DR, Hickey MJ, Coulter SN, Zhu YQ, Warrener P, Nguyen LY, Shawar RM, Folger KR, Stover CK. Characterization of a Pseudomonas aeruginosa efflux pump contributing to aminoglycoside impermeability. Antimicrob Agents Chemother 1999; 43:2975-83. [PMID: 10582892 PMCID: PMC89597 DOI: 10.1128/aac.43.12.2975] [Citation(s) in RCA: 187] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/1999] [Accepted: 09/30/1999] [Indexed: 11/20/2022] Open
Abstract
Pseudomonas aeruginosa can employ many distinct mechanisms of resistance to aminoglycoside antibiotics; however, in cystic fibrosis patients, more than 90% of aminoglycoside-resistant P. aeruginosa isolates are of the impermeability phenotype. The precise molecular mechanisms that produce aminoglycoside impermeability-type resistance are yet to be elucidated. A subtractive hybridization technique was used to reveal gene expression differences between PAO1 and isogenic, spontaneous aminoglycoside-resistant mutants of the impermeability phenotype. Among the many genes found to be up-regulated in these laboratory mutants were the amrAB genes encoding a recently discovered efflux system. The amrAB genes appear to be the same as the recently described mexXY genes; however, the resistance profile that we see in P. aeruginosa is very different from that described for Escherichia coli with mexXY. Direct evidence for AmrAB involvement in aminoglycoside resistance was provided by the deletion of amrB in the PAO1-derived laboratory mutant, which resulted in the restoration of aminoglycoside sensitivity to a level nearly identical to that of the parent strain. Furthermore, transcription of the amrAB genes was shown to be up-regulated in P. aeruginosa clinical isolates displaying the impermeability phenotype compared to a genotypically matched sensitive clinical isolate from the same patient. This suggests the possibility that AmrAB-mediated efflux is a clinically relevant mechanism of aminoglycoside resistance. Although it is unlikely that hyperexpression of AmrAB is the sole mechanism conferring the impermeability phenotype, we believe that the Amr efflux system can contribute to a complex interaction of molecular events resulting in the aminoglycoside impermeability-type resistance phenotype.
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Qu LH, Henras A, Lu YJ, Zhou H, Zhou WX, Zhu YQ, Zhao J, Henry Y, Caizergues-Ferrer M, Bachellerie JP. Seven novel methylation guide small nucleolar RNAs are processed from a common polycistronic transcript by Rat1p and RNase III in yeast. Mol Cell Biol 1999; 19:1144-58. [PMID: 9891049 PMCID: PMC116044 DOI: 10.1128/mcb.19.2.1144] [Citation(s) in RCA: 126] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/1998] [Accepted: 11/09/1998] [Indexed: 11/20/2022] Open
Abstract
Through a computer search of the genome of the yeast Saccharomyces cerevisiae, the coding sequences of seven different box C/D antisense small nucleolar RNAs (snoRNAs) with the structural hallmarks of guides for rRNA ribose methylation have been detected clustered over a 1.4-kb tract in an inter-open reading frame region of chromosome XIII. The corresponding snoRNAs have been positively identified in yeast cells. Disruption of the nonessential snoRNA gene cluster specifically suppressed the seven cognate rRNA ribose methylations but did not result in any growth delay under the conditions of yeast culture tested. The seven snoRNAs are processed from a common polycistronic transcript synthesized from an independent promoter, similar to some plant snoRNAs but in marked contrast with their vertebrate functional homologues processed from pre-mRNA introns containing a single snoRNA. Processing of the polycistronic precursor requires nucleases also involved in rRNA processing, i.e., Rnt1p and Rat1p. After disruption of the RNT1 gene, the yeast ortholog of bacterial RNase III, production of the seven mature snoRNAs was abolished, while the polycistronic snoRNA precursor accumulated. In cells lacking functional Rat1p, an exonuclease involved in the processing of both pre-rRNA and intron-encoded snoRNAs, several processing intermediates of the polycistronic precursor accumulated. This allowed for the mapping in the precursor of the presumptive Rnt1p endonucleolytic cuts which provide entry sites for subsequent exonucleolytic trimming of the pre-snoRNAs. In line with known properties of double-stranded RNA-specific RNase III, pairs of Rnt1p cuts map next to each other on opposite strands of long double-helical stems in the secondary structure predicted for the polycistronic snoRNA precursor.
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MESH Headings
- Base Sequence
- Binding Sites/genetics
- DNA Primers/genetics
- DNA, Fungal/genetics
- Endoribonucleases/metabolism
- Exoribonucleases/metabolism
- Fungal Proteins/metabolism
- Gene Expression
- Genes, Fungal
- Methylation
- Molecular Sequence Data
- Multigene Family
- Nucleic Acid Conformation
- Promoter Regions, Genetic
- RNA Processing, Post-Transcriptional
- RNA, Antisense/chemistry
- RNA, Antisense/genetics
- RNA, Antisense/metabolism
- RNA, Fungal/chemistry
- RNA, Fungal/genetics
- RNA, Fungal/metabolism
- RNA, Ribosomal/biosynthesis
- RNA, Small Nuclear/chemistry
- RNA, Small Nuclear/genetics
- RNA, Small Nuclear/metabolism
- Ribonuclease III
- Saccharomyces cerevisiae/genetics
- Saccharomyces cerevisiae/metabolism
- Saccharomyces cerevisiae Proteins
- RNA, Small Untranslated
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Affiliation(s)
- L H Qu
- Biotechnology Research Center, Zhongshan University, Guangzhou 510 275, People's Republic of China
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37
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Zhu YQ, Wang B, Wang XY. [Effect on preparing curved artificial root cancals with five handle endodonic instruments I.comparison of cutting ability]. Shanghai Kou Qiang Yi Xue 1998; 7:219-20. [PMID: 15071631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
OBJECTIVE: To compare the cutting ability of five handle endodontic instruments. METHODS: The speciments weight loss following serial preparation of artificial root canal were measured with electronic analysis balance. RESULTS: The greatest cutting ability occurred with H file,then with K-flex file,Unifile,K file and K reamer. CONCLUSION: The cutting ability of endodontic instrument is influenced by several factors,such as metallurgical properties,cross-sectional configuration of shaft,flute design and tip design.
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Affiliation(s)
- Y Q Zhu
- Department of Endodontics,School of Stomatology,Shanghai Second Medical University. Shanghai 200011,China
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38
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Zhu YQ, Xia WW, Wang XY. [Effect on preparing curved artificial root canal with five handle endodontic instruments II comparision of shaping ability]. Shanghai Kou Qiang Yi Xue 1998; 7:221-3. [PMID: 15071632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
OBJECTIVE:To compared the shaping ability of five handle endodontic instruments. METHODS: The canal shape of prepared artificial root canals with five handle endodontic instruments were observed by light-microscope. RESULTS: Apical zips,elbows and perforations were not found. Ledges occurred in speciments of K-Flex group and they were relating to resinous plugs.The apical transportatins were relating to resinous plugs.The apical transportations of K-Flex group and H file group are much greater than other groups. CONCLUSION: Unifile or K file is first choice to prepare curved artificial root canals with routine preparation technique by comprehensive evaluaion of the cutting ability and shaping ability of five handle endodontic instruments.
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Affiliation(s)
- Y Q Zhu
- Department of Endodontics,School of Stomatology,Shanghai Second Medical University. Shanghai 200011,China
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39
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Yuan Y, Crane DD, Simpson RM, Zhu YQ, Hickey MJ, Sherman DR, Barry CE. The 16-kDa alpha-crystallin (Acr) protein of Mycobacterium tuberculosis is required for growth in macrophages. Proc Natl Acad Sci U S A 1998; 95:9578-83. [PMID: 9689123 PMCID: PMC21381 DOI: 10.1073/pnas.95.16.9578] [Citation(s) in RCA: 240] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
Although the 16-kDa alpha-crystallin homologue of Mycobacterium tuberculosis (MTB) is the dominant protein produced by stationary phase cultures in vitro, it is undetectable in logarithmically growing cultures. By growing bacilli at defined oxygen concentrations, acr transcription was shown to be strongly induced by mildly hypoxic conditions. Acr expression also was found to be induced during the course of in vitro infection of macrophages. The acr gene was replaced with a hygromycin resistance cassette by allelic exchange in MTB H37Rv. The resulting Deltaacr::hpt strain was shown to be equivalent to wild-type H37Rv in in vitro growth rate and infectivity but was significantly impaired for growth in both mouse bone marrow derived macrophages and THP-1 cells. In addition to its proposed role in maintenance of long-term viability during latent, asymptomatic infections, these results establish a role for the Acr protein in replication during initial MTB infection.
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Affiliation(s)
- Y Yuan
- Tuberculosis Research Unit, Rocky Mountain Laboratories, National Institute of Allergy and Infectious Diseases, Hamilton, MT 59840, USA
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40
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Zhu YQ, Wang XY. [A study of the shape of prepared canal of commonly used hand endodontic instruments]. Shanghai Kou Qiang Yi Xue 1998; 7:37-9. [PMID: 15071700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
OBJECTIVE:Straight or slightly curved single root canals of teeth (<20 degree) were instrumentated with three commonly the hand endodontic instruments,which included K reamer,K file and H filel.The shape of prepared canal and root canal deviation at three levels were measured by computerized digital image processing program.The results demostrated that any significant differences were not found on root canal deviation in either labio-lingual or mesiodistal direction at each level,and that the shape of prepared canal was not different significantly.Apical transportation of the severely curved artificial root canals(25-30 degree) showed that H file was the most severe,K reamer was the least.It is suggested in this article how we select endodontic instruments rationally and effectively.
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Affiliation(s)
- Y Q Zhu
- Department of Endodontics,School of Stomatology,Shanghai Second Medical University.Shanghai 200011, China
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41
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Zhu YQ, Zhang CH, Chen GH. [Homocysteine: an independent risk factor for atherosclerosis]. Sheng Li Ke Xue Jin Zhan 1997; 28:334-6. [PMID: 11038686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
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42
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Chen XX, Zhang YD, Shen JP, Pu J, Yan HY, Zhu YQ, Qiu JJ. Pharmacokinetics of bendazac lysine in 10 Chinese young men. Zhongguo Yao Li Xue Bao 1997; 18:109-11. [PMID: 10072958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
AIM To compare the pharmacokinetics of domestic and imported tablets of bendazao lysine (BL). METHODS A single oral dose of 500 mg BL of this 2 kinds of tablets was given to 10 Chinese volunteers of Han nationality in a randomized crossover study. Plasma levels were determined with HPLC-UV method. Data were analyzed automatically by using a CAPP program on microcomputer. RESULTS The plasma concentration-time curve was fitted to 2-compartment open model, and the major pharmacokinetic parameters of domestic and imported BL tablets were shown respectively as following: Cmax 66 +/- 16 and 65 +/- 8 mg.L-1; Tmax 0.98 +/- 0.22 and 0.98 +/- 0.21 h; T1/2 beta 6.2 +/- 1.8 and 6.2 +/- 1.7 h; AUC 335 +/- 47 and 337 +/- 58 mg.h.L-1. There was no significant difference between domestic and imported tablets. The bioavailability of the domestic vs that of the imported tablet was 99 +/- 12%. The unchanged BL in urine were about 5.4% and 5.6% respectively of the dosage in 24 h after a single oral dose. CONCLUSION The two kinds of tablets had the same biological effects.
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Affiliation(s)
- X X Chen
- Institute of Clinical Pharmacology, Nanjing Medical University, China
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43
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Abstract
We selected mutants of feline immunodeficiency virus (FIV) that are resistant to 2',3'-dideoxy-2',3'-didehydrothymidine (d4T). Two mutants were selected in cultured cells with a stepwise increase in d4T concentration, resulting in mutants able to replicate in 100 microM d4T. These mutants were three- to sixfold more resistant to d4T than wild-type FIV. They were also cross-resistant to 3'-azido-3'-deoxythymidine (AZT), 3'-fluoro-2',3'-dideoxythymidine, 2',3'-dideoxycytidine, 2',3'-dideoxyinosine, and 9-(2-phosphonylmethoxyethyl)adenine, and they were highly resistant to phosphonoformic acid (PFA). Plaque-purified mutants were isolated from each of the mutant populations. The mutant phenotype was stable, because both of the plaque-purified mutants remained d4T resistant even after three passages in the absence of d4T. One of the plaque-purified mutants, designated D4R-3c, was further characterized. Compared with wild-type reverse transcriptase (RT), RT purified from D4R-3c was 3-fold resistant to inhibition by the 5'-triphosphate of d4T, 10-fold resistant to inhibition by the 5'-triphosphate of AZT, and 6-fold resistant to PFA. D4R-3c had a single point mutation in the RT-encoding region of the pol gene at position 2474, resulting in a Val to Ile mutation at codon 47 of the FIV RT. The role of this mutation in d4T resistance was confirmed by site-directed mutagenesis.
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Affiliation(s)
- Y Q Zhu
- Division of Biological Sciences, University of Montana, Missoula 59812, USA
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44
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Abstract
High-affinity, high-specificity RNA ligands for reverse transcriptase from feline immunodeficiency virus (FIV) were isolated from an RNA library by the SELEX (Systematic Evolution of Ligands by EXponential enrichment) procedure. The selected RNA ligands bound to FIV reverse transcriptase with dissociation constants in the nanomolar range. One of the ligands was a potent inhibitor of the RNA-dependent DNA polymerase activity of both the recombinant and the virion-derived FIV reverse transcriptase. It also inhibited the reverse transcriptase from an FIV mutant that is resistant to 3'-azido-3'-deoxythymidine (AZT). The inhibition of FIV reverse transcriptase was competitive with respect to template-primer and noncompetitive with respect to deoxyribonucleoside 5'-triphosphates. This ligand was specific for the FIV enzyme and did not inhibit other reverse transcriptases tested (avian myeloblastosis virus, Moloney murine leukemia virus, and human immunodeficiency virus type 1).
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Affiliation(s)
- H Chen
- Department of Molecular, University of Colorado at Boulder 80309, USA
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45
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Medlin HK, Zhu YQ, Remington KM, Phillips TR, North TW. Selection and characterization of a mutant of feline immunodeficiency virus resistant to 2',3'-dideoxycytidine. Antimicrob Agents Chemother 1996; 40:953-7. [PMID: 8849258 PMCID: PMC163237 DOI: 10.1128/aac.40.4.953] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
We have selected and plaque purified a mutant of feline immunodeficiency virus (FIV) that is resistant to 2',3'-dideoxycytidine (ddC). This mutant was selected in cultured cells in the continuous presence of 25 microM ddC. The mutant, designated DCR-5c, was fourfold resistant to ddC, threefold resistant to 2',3'-dideoxyinosine, and more than fourfold resistant to phosphonoformic acid. DCR-5c displayed little or no resistance to (-)-beta-2',3'-dideoxy-3'-thiacytidine, 3'-azido-3'-deoxythymidine, or 9-(2-phosphonylmethoxyethyl) adenine. Reverse transcriptase purified from DCR-5c was less susceptible to inhibition by ddCTP, phosphonoformic acid, ddATP, or azido-dTTP than the wild-type FIV reverse transcriptase. Sequence analysis of DCR-5c revealed a single base change (G to C at nucleotide 2342) in the reverse transcriptase-encoding region of FIV. This mutation results in substitution of His for Asp at codon 3 of FIV reverse transcriptase. The role of this mutation in ddC resistance was confirmed by site-directed mutagenesis.
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Affiliation(s)
- H K Medlin
- Division of Biological Sciences, University of Montana, Missoula 59812, USA
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46
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Zhang YF, Zhu YQ. [Clinical application of Dyract composite filling materials and the study of their marginal micro-leakage.]. Shanghai Kou Qiang Yi Xue 1995; 4:212-3. [PMID: 16538364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Affiliation(s)
- Y F Zhang
- Department Of Dentistry, Ruijin Hospital, Shanghai Second Medical University. Shanghai 200025,China
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47
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Wang DZ, Zhu YQ, Li YP. [Clinical and experimental studies on treatment of menopausal syndrome with geng nian shu]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1994; 14:396-9. [PMID: 7950222] [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: 01/28/2023]
Abstract
370 cases of menopausal syndrome (MS)patients with the Syndrome Differentiation of "Excessive Fire in the Heart and Liver" were studied and divided into 4 groups randomly, 3 of them were treated with Geng-Nian-Shu(GNS) of different forms administered double-blindly with placebo. The effective rates of 3 therapeutic groups were 80.3-91.3% and the placebo group 48.6%, the difference was statistically significant. FSH, LH, E2, Te, ACTH, corticosteroid, CA, TSH, FT3, FT4, and beta-EP were assayed before and after treatment. The results were as follows:ACTH, FT3, FT4 lowered after treatment (P < 0.05, P < 0.05, P < 0.01) respectively, CA and corticosteroid in urine and beta-EP in plasma somewhat lowered (P < 0.05). Assays of the vegetative nerve balance factors (Y) showed that patients changed from the state of sympathetic hyperfunction to normal after treatment. No statistical difference of FSH, LH, E2, Te before and after treatment was observed. Animal experiment: mono-amino-neurotransmitter in hypothalamus, beta-EP in pituitary gland and blood plasma, plasma ACTH, cAMP and serum TSH, FT3, FT4, FSH, E2, Te of normal and ovariectomized white rats were studied, and the effect of GNS on these parameters were observed. In ovariectomized white rats: (1) The amount of NE in the hypothalamus increased, and NE, 5-HT, DA, plasma cAMP, ACTH, serum FT3, beta-EP in pituitary gland markedly lowered in the treatment group. The differences were statistically Significant (P < 0.05-0.001). (2) Serum TSH increased with no statistical difference, it was not lowered in the treatment group. (3) No significant difference for FT4, plasma beta-EP was observed.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- D Z Wang
- Long-Hua Hospital, Shanghai College of TCM
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48
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Zhu YQ, Wang XY. [Study on the biocompatibility of commonly used root canal filling materials]. Shanghai Kou Qiang Yi Xue 1994; 3:78-81. [PMID: 15160146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
The biocompatibility of commonly used four endodontic sealers and three brands of gutta-percha was studied by cell attachment experiment in vitro and SEM technique.The results indicated that all the materials tested had significant cytotoxicity.Clinically,in order to avoid irritrating periapical tissue mechanically and reduce cytotoxicity,overfilling should be avoided when possible.
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Affiliation(s)
- Y Q Zhu
- Department of Oral Medicine,School of Stomatology,Shanghai Second Medical University. Shanghai 200011,China
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49
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Gobert JM, Remington KM, Zhu YQ, North TW. Multiple-drug-resistant mutants of feline immunodeficiency virus selected with 2',3'-dideoxyinosine alone and in combination with 3'-azido-3'-deoxythymidine. Antimicrob Agents Chemother 1994; 38:861-4. [PMID: 8031060 PMCID: PMC284556 DOI: 10.1128/aac.38.4.861] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Mutants of feline immunodeficiency virus (FIV) were selected in cell culture in the continuous presence of 10 microM (each) 3'-azido-3'-deoxythymidine (AZT) and 2',3'-dideoxyinosine (ddI). These mutants (AIR-1 and AIR-3) displayed a 13-fold resistance to AZT but had less than a 2-fold decrease in susceptibility to ddI. Interestingly, the AIR mutants were cross-resistant to phosphonoformate (PFA) and were hypersensitive to 2',3'-dideoxycytidine (ddC). Mutants of FIV were also selected in the presence of 10 microM ddI alone (DIS-1, DIS-2c), and these displayed a two- to fourfold decrease in susceptibility to ddI. Like the mutants selected with the combination of AZT plus ddI, DIS-1 and DIS-2c were cross-resistant to PFA and were hypersensitive to ddC. However, they remained as susceptible as wild-type FIV to AZT. Thus, the mutants selected with the combination of AZT plus ddI have phenotypes which reflect those obtained by selection with these drugs individually.
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Affiliation(s)
- J M Gobert
- Division of Biological Sciences, University of Montana, Missoula 59812
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50
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Zhu YQ, Wang XY, Xu X. [Study on the apical sealability of warm lateral condensation techniques]. Shanghai Kou Qiang Yi Xue 1994; 3:27-9. [PMID: 15160175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
An apical leakage test and a visible light spectrophotmetric analysis were performed to compare the apical sealability of warm lateral condensation and conventional lateral condensation techniques.The results showed that warm lateral with sealer delivered best sealability.It was superior to warm lateral without sealer(P<0.05) and conventional lateral condensation technique(P<0.01).Because of its inconvenient operation causing by native-made putta-percha,it is difficult to use warm lateral condensation technique widely in our country.
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Affiliation(s)
- Y Q Zhu
- Department of Oral Medical,School of Stomatology,Shanghai Second Medical University.Shanghai 200011, China
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