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Feng L, Zhang Y, Liu XM, Liu GF, Liu XD, Li MS, Zhang L, Xu AQ. [Epidemiological characteristics and clinical features of pertussis in Shandong Province from 2007 to 2022]. Zhonghua Yu Fang Yi Xue Za Zhi 2024; 58:33-39. [PMID: 38228547 DOI: 10.3760/cma.j.cn112150-20230426-00325] [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: 01/18/2024]
Abstract
Objective: To analyze the epidemiological characteristics and clinical features of pertussis cases reported in Shandong Province of China. Methods: Data on pertussis cases in Shandong Province from 2007 to 2022 were collected from China Information System for Disease Control and Prevention. At the same time, some case information was collected from the database of notifiable pertussis in Shandong Province from 2007 to 2022. The distribution characteristics and clinical features of pertussis were analyzed. A spatial distribution map of pertussis cases in Shandong Province was drawn. Results: A total of 26 122 pertussis cases were reported in Shandong Province during 2007-2022, with an annual incidence rate ranging from 0.11 to 5.77 cases per 100 000 people. Cases occurred throughout the whole year, with a seasonal peak occurring in spring and summer, especially in July and August. In recent years, reported cases were mainly distributed in the central and western regions of Shandong Province, with fewer cases in the eastern region. The hot spots of the disease shifted from Heze and Dezhou City in 2007-2013 to Jinan and Tai'an city in 2014-2022. The age range of onset was from 1 day to 93 years old. The proportion of cases with age≤1 year was the largest (41.81%, 10 922/26 122), and the proportion of cases aged 0-6 months decreased from 32.21% (67/208)-55.67% (157/282) within the period of 2007 to 2013 to 16.78% (883/5 263)-41.97% (444/1 058) within the period of 2014 to 2022, with a statistically significant trend (χ² trend=670.01, P<0.001). There were 13 682 male cases and 12 440 female cases, with a male-female ratio of 1.10∶1. The male-female ratio was 1.45∶1 (806∶556) from 2007 to 2013 and 1.08∶1 (12 876∶11 884) from 2014 to 2022. The proportion of women increased from 42.31% (88/208) in 2007 to 47.84% (2 518/5 263) in 2022, and with a significant trend (χ² trend=22.25, P<0.001). In pertussis cases, the proportions of scattered children, kindergarten children and students were 71.38% (18 645/26 122), 15.13% (3 951/26 122), and 11.60% (3 031/26 122), respectively. The top five clinical symptoms of pertussis cases were paroxysmal spasmodic cough (86.33%, 21 411 cases), flushing (39.61%, 9 824 cases), restless sleep (34.51%, 8 558 cases), fever (30.80%, 7 638 cases), and crowing (27.53%, 6 829 cases). Among 24 802 cases, there were 15 542 cases (62.66%) with a history of immunization against pertussis vaccine. Conclusion: From 2007 to 2022, the incidence rate of pertussis cases in Shandong Province shows an upward trend, with the majority being young children, and the clinical symptoms are relatively typical.
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Affiliation(s)
- L Feng
- Expanded Program Immunization Division, Shandong Center for Disease Control and Prevention,Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - Y Zhang
- Expanded Program Immunization Division, Shandong Center for Disease Control and Prevention,Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - X M Liu
- Infectious Disease Control and Prevention Division, Dongying Center for Disease Control and Prevention, Dongying 257091, China
| | - G F Liu
- Expanded Program Immunization Division, Shandong Center for Disease Control and Prevention,Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - X D Liu
- Expanded Program Immunization Division, Shandong Center for Disease Control and Prevention,Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - M S Li
- Expanded Program Immunization Division, Shandong Center for Disease Control and Prevention,Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - L Zhang
- Expanded Program Immunization Division, Shandong Center for Disease Control and Prevention,Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - A Q Xu
- Academy of Preventive Medicine/Shandong University, Jinan 250014, China
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2
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Peng CY, Li MS, Li YW, Xu C. [Current status and prospects of non-surgical treatment for fecal incontinence]. Zhonghua Wei Chang Wai Ke Za Zhi 2023; 26:1138-1142. [PMID: 38110275 DOI: 10.3760/cma.j.cn441530-20230908-00083] [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: 12/20/2023]
Abstract
Fecal incontinence is a refractory disease in colorectal surgery. The main clinical manifestation is that patients cannot control the discharge of gas, solid or liquid feces in the rectum autonomously. It is easy to bring shame to patients and seriously affect their physical and mental health. Reducing the frequency of fecal incontinence, restoring anal sphincter function, and improving patient quality of life are important goals for treating fecal incontinence. With the development of medical technology and the improvement of treatment plans for fecal incontinence, patients with fecal incontinence usually undergo conservative treatment first, and if conservative treatment is ineffective, surgery can be chosen. Non-surgical treatment methods commonly used in clinical practice include biofeedback therapy, magnetic stimulation therapy, pelvic floor muscle training, anal sphincter training, Kegel training, and other rehabilitation treatments. This article discusses the non-surgical treatment methods for fecal incontinence, hoping to provide a choice for clinical treatment of fecal incontinence.
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Affiliation(s)
- C Y Peng
- Graduate School of Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - M S Li
- Department of colorectal surgery, Tianjin Union Medical Center,Tianjin 300121, China
| | - Y W Li
- Department of colorectal surgery, Tianjin Union Medical Center,Tianjin 300121, China
| | - C Xu
- Department of colorectal surgery, Tianjin Union Medical Center,Tianjin 300121, China
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Zhang Z, Jiao CM, Li MS, Kang JQ, Xu C, Li YW, Zhang XP. [Advances in colonic manometry in adults with colonic motility disorders]. Zhonghua Wei Chang Wai Ke Za Zhi 2023; 26:614-617. [PMID: 37583017 DOI: 10.3760/cma.j.cn441530-20220901-00365] [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: 08/17/2023]
Abstract
In recent years, colonic manometry has been gradually introduced into clinical practice. It helps clinicians to gain a better understanding of the physiology and pathophysiology of colonic contractile activity in healthy adults and patients with colonic dysfunction. More and more patterns of colonic motility are being discovered with the help of colonic manometry. However, the clinical significance of these findings still needs to be further investigated. This review enhances our understanding of colonic motility and the current state of development and application of colonic manometry, as well as the limitations, future directions and potential of the technique in assessing the impact of treatment on colonic motility patterns, by analyzing and summarizing the literature related to colonic manometry.
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Affiliation(s)
- Z Zhang
- Department of Colorectal Surgery,Tianjin Union Medical Center,Tianjin 300121,China
| | - C M Jiao
- Department of Reproductive Medicine, The First Affiliated Hospital of Henan University of Traditional Chinese Medicine, Zhengzhou 450099, China
| | - M S Li
- Department of Colorectal Surgery,Tianjin Union Medical Center,Tianjin 300121,China
| | - J Q Kang
- Department of Colorectal Surgery,Tianjin Union Medical Center,Tianjin 300121,China
| | - C Xu
- Department of Colorectal Surgery,Tianjin Union Medical Center,Tianjin 300121,China
| | - Y W Li
- Department of Colorectal Surgery,Tianjin Union Medical Center,Tianjin 300121,China
| | - X P Zhang
- Department of Colorectal Surgery,Tianjin Union Medical Center,Tianjin 300121,China
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Zhang Z, Sun Y, Li MS, Li YW, Yu YJ, Xu C, Chen C, Zhang XP. A duodenal approach for laparoscopic complete mesocolic excision (CME) plus central vascular ligation or extended lymphadenectomy (CVL/D3) in right‑sided colon cancer (with video). Tech Coloproctol 2023; 27:239-240. [PMID: 35969282 DOI: 10.1007/s10151-022-02660-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 07/05/2022] [Indexed: 02/07/2023]
Affiliation(s)
- Z Zhang
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
| | - Y Sun
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
| | - M S Li
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
| | - Y W Li
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
| | - Y J Yu
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
| | - C Xu
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
| | - C Chen
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China
| | - X P Zhang
- Department of Colorectal Surgery, Tianjin Union Medical Center, Tianjin, China.
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5
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Omar GJ, Kong WL, Jani H, Li MS, Zhou J, Lim ZS, Prakash S, Zeng SW, Hooda S, Venkatesan T, Feng YP, Pennycook SJ, Shen L, Ariando A. Experimental Evidence of t_{2g} Electron-Gas Rashba Interaction Induced by Asymmetric Orbital Hybridization. Phys Rev Lett 2022; 129:187203. [PMID: 36374676 DOI: 10.1103/physrevlett.129.187203] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 09/28/2022] [Indexed: 06/16/2023]
Abstract
We report the control of Rashba spin-orbit interaction by tuning asymmetric hybridization between Ti orbitals at the LaAlO_{3}/SrTiO_{3} interface. This asymmetric orbital hybridization is modulated by introducing a LaFeO_{3} layer between LaAlO_{3} and SrTiO_{3}, which alters the Ti-O lattice polarization and traps interfacial charge carriers, resulting in a large Rashba spin-orbit effect at the interface in the absence of an external bias. This observation is verified through high-resolution electron microscopy, magnetotransport and first-principles calculations. Our results open hitherto unexplored avenues of controlling Rashba interaction to design next-generation spin orbitronics.
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Affiliation(s)
- G J Omar
- Department of Physics, Faculty of Science, National University of Singapore, Singapore 117542, Singapore
| | - W L Kong
- Department of Mechanical Engineering, National University of Singapore, Singapore 117575, Singapore
| | - H Jani
- Department of Physics, Faculty of Science, National University of Singapore, Singapore 117542, Singapore
| | - M S Li
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575
| | - J Zhou
- Department of Physics, Faculty of Science, National University of Singapore, Singapore 117542, Singapore
| | - Z S Lim
- Department of Physics, Faculty of Science, National University of Singapore, Singapore 117542, Singapore
| | - S Prakash
- Department of Physics, Faculty of Science, National University of Singapore, Singapore 117542, Singapore
| | - S W Zeng
- Department of Physics, Faculty of Science, National University of Singapore, Singapore 117542, Singapore
| | - S Hooda
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117576, Singapore
| | - T Venkatesan
- Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117576, Singapore
| | - Y P Feng
- Department of Physics, Faculty of Science, National University of Singapore, Singapore 117542, Singapore
| | - S J Pennycook
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575
| | - L Shen
- Department of Mechanical Engineering, National University of Singapore, Singapore 117575, Singapore
| | - A Ariando
- Department of Physics, Faculty of Science, National University of Singapore, Singapore 117542, Singapore
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6
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Zheng H, Li MS, Wu D, Yan TT, An ZJ, Li YX. [Interpretation of defeating meningitis by 2030: a global road map]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:1348-1352. [PMID: 36207902 DOI: 10.3760/cma.j.cn112150-20220217-00148] [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: 06/16/2023]
Abstract
Meningitis is a life-threatening disease. In order to reduce its threat to public health, the World Health Assembly indorsed a resolution in 2020 for urgent global action to prevent and control meningitis. Defeating Meningitis by 2030: a Global Roadmap was officially launched by the World Health Organization in 2021. We interpreted some key information of the roadmap from the aspects of coverage, objectives and pillar strategies, providing ideas for further strengthening the prevention and control of bacterial meningitis in China.
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Affiliation(s)
- H Zheng
- Department of National Immunization Program,Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - M S Li
- Department of National Immunization Program,Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - D Wu
- Department of National Immunization Program,Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - T T Yan
- Department of National Immunization Program,Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Z J An
- Department of National Immunization Program,Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Y X Li
- Department of National Immunization Program,Chinese Center for Disease Control and Prevention, Beijing 100050, China
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7
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Zhang W, Liu FQ, Zhang LP, Ding HG, Zhuge YZ, Wang JT, Li L, Wang GC, Wu H, Li H, Cao GH, Lu XF, Kong DR, Sun L, Wu W, Sun JH, Liu JT, Zhu H, Li DL, Guo WH, Xue H, Wang Y, Gengzang CJC, Zhao T, Yuan M, Liu SR, Huan H, Niu M, Li X, Ma J, Zhu QL, Guo WW, Zhang KP, Zhu XL, Huang BR, Li JN, Wang WD, Yi HF, Zhang Q, Gao L, Zhang G, Zhao ZW, Xiong K, Wang ZX, Shan H, Li MS, Zhang XQ, Shi HB, Hu XG, Zhu KS, Zhang ZG, Jiang H, Zhao JB, Huang MS, Shen WY, Zhang L, Xie F, Li ZW, Hou CL, Hu SJ, Lu JW, Cui XD, Lu T, Yang SS, Liu W, Shi JP, Lei YM, Bao JL, Wang T, Ren WX, Zhu XL, Wang Y, Yu L, Yu Q, Xiang HL, Luo WW, Qi XL. [Status of HVPG clinical application in China in 2021]. Zhonghua Gan Zang Bing Za Zhi 2022; 30:637-643. [PMID: 36038326 DOI: 10.3760/cma.j.cn501113-20220302-00093] [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: The investigation and research on the application status of Hepatic Venous Pressure Gradient (HVPG) is very important to understand the real situation and future development of this technology in China. Methods: This study comprehensively investigated the basic situation of HVPG technology in China, including hospital distribution, hospital level, annual number of cases, catheters used, average cost, indications and existing problems. Results: According to the survey, there were 70 hospitals in China carrying out HVPG technology in 2021, distributed in 28 provinces (autonomous regions and municipalities directly under the central Government). A total of 4 398 cases of HVPG were performed in all the surveyed hospitals in 2021, of which 2 291 cases (52.1%) were tested by HVPG alone. The average cost of HVPG detection was (5 617.2±2 079.4) yuan. 96.3% of the teams completed HVPG detection with balloon method, and most of the teams used thrombectomy balloon catheter (80.3%). Conclusion: Through this investigation, the status of domestic clinical application of HVPG has been clarified, and it has been confirmed that many domestic medical institutions have mastered this technology, but it still needs to continue to promote and popularize HVPG technology in the future.
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Affiliation(s)
- W Zhang
- Department of Interventional Radiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - F Q Liu
- Department of Interventional Radiology, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
| | - L P Zhang
- Department of Radiology,Third Hospital of Taiyuan, Taiyuan 030012, China
| | - H G Ding
- Liver Disease Digestive Center,Beijing Youan Hospital, Capital Medical University, Beijing 100069, China
| | - Y Z Zhuge
- Digestive Department,Affiliated Drum Tower Hospital, Medical School of Nanjing University, Nanjing 210008, China
| | - J T Wang
- Department of Hepatobiliary Surgery, Xingtai People's Hospital, Xingtai 054001, China
| | - L Li
- Department of Interventional Radiology, the First Hospital of Lanzhou University, Lanzhou 730013, China
| | - G C Wang
- Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250021, China
| | - H Wu
- Digestive Department, West China Hospital, Sichuan University, Chengdu 610044, China
| | - H Li
- Institute of Hepatology and Department of Infectious Disease, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - G H Cao
- Department of Radiology, Shulan Hospital, Hangzhou 310022, China
| | - X F Lu
- Digestive Department, West China Hospital, Sichuan University, Chengdu 610044, China
| | - D R Kong
- Digestive Department, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, China
| | - L Sun
- Department of Gastroenterology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325001, China
| | - W Wu
- Department of Gastroenterology, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou 325001, China
| | - J H Sun
- Hepatobiliary and Pancreatic Intervention Center , the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - J T Liu
- Digestive Department,Hainan Hospital of Chinese PLA General Hospital, Sanya 572013, China
| | - H Zhu
- The 1 st Department of Interventional Radiology, the Sixth People's Hospital of Shenyang, Shenyang 110006, China
| | - D L Li
- No. 900 Hospital of the Joint Logistic Support Force, Fuzhou 350025, China
| | - W H Guo
- Department of Interventional Radiology, Meng Chao Hepatobiliary Hospital of Fujian Medical University, Fuzhou 350025, China
| | - H Xue
- Digestive Department, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China
| | - Y Wang
- Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
| | - C J C Gengzang
- Department of Interventional Radiology, the Fourth People's Hospital of Qinghai Province, Xining 810007, China
| | - T Zhao
- Department of Radiology,Sir Run Shaw Hospital, Zhejiang University, Hangzhou 310016, China
| | - M Yuan
- Department of Interventional Radiology Shanghai Public Health Clinical Center, Fudan University, Shanghai 201508, China
| | - S R Liu
- Department of Infectious Disease,Qufu People's Hospital, Qufu 273199, China
| | - H Huan
- Digestive Department, Chengdu Office Hospital of Tibet Autonomous Region People's Government, Chengdu 610041, China
| | - M Niu
- Department of Interventional Radiology, the First Affiliated Hospital of China Medical University, Shenyang 110001, China
| | - X Li
- Department of Radiology,Tianjin Second People's Hospital, Tianjin 300192, China
| | - J Ma
- Department of Interventional Vascular Surgerg, People's Hospital of Ningxia Hui Autonomous Region, Yinchuan 750002, China
| | - Q L Zhu
- Digestive Department,the Affiliated Hospital of Southwest Medical University, Luzhou 646099, China
| | - W W Guo
- Department of Interventional Radiology, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China
| | - K P Zhang
- Department of Hepatobiliary Surgery, Xingtai People's Hospital, Xingtai 054001, China
| | - X L Zhu
- Department of Surgery, the First Hospital of Lanzhou University, Lanzhou 730013, China
| | - B R Huang
- Department of Interventional Vascular Surgery,Jingzhou First People's Hospital, Jingzhou, China
| | - J N Li
- Liver Diseases Department,Jiamusi Infectious Disease Hospital, Jiamusi 154015, China
| | - W D Wang
- Hepatobiliary, Pancreatic and Spleen Surgery Department,Shunde Hospital, Southern Medical University, Foshan 528427, China
| | - H F Yi
- Digestive Department,Wuhan First Hospital, Wuhan 430030, China
| | - Q Zhang
- Interventional Vascular Surgery Department, Affiliated Zhongda Hospital of Southeast University, Nanjing 210009, China
| | - L Gao
- Oncology and Vascular Interventional Department, First Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - G Zhang
- Digestive Department, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530016, China
| | - Z W Zhao
- Department of Interventional Radiology, Lishui Municipal Central Hospital, Zhejiang University School of Medicine, Lishui 323030, China
| | - K Xiong
- Digestive Department, the Second Affiliated Hospital of Nanchang University, Nanchang 330008, China
| | - Z X Wang
- Inner Mongolia Medical University Affiliated Hospital, Hohhot 010050, China
| | - H Shan
- Interventional Medicine Center, the Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai 519000, China
| | - M S Li
- Department of Endovascular Surgery, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - X Q Zhang
- Digestive Department, the Second Hospital of Hebei Medical University, Shijiazhuang 050004, China
| | - H B Shi
- Department of Interventional Radiology, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - X G Hu
- Interventional Radiology Department,Jinhua Municipal Central Hospital, Jinhua 321099, China
| | - K S Zhu
- Interventional Radiology Department, the Second Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou 510260, China
| | - Z G Zhang
- Department of Liver Surgery,Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, China
| | - H Jiang
- Infectious Disease Department,Second Affiliated Hospital, Military Medical University of the Air Force, Xi'an 710038, China
| | - J B Zhao
- Department of Vascular and Interventional Radiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - M S Huang
- Interventional Radiology Department, the Third Affiliated Hospital, Sun Yat-sen University, Guangzhou 510000, China
| | - W Y Shen
- Digestive Department,Fuling Hospital Affiliated to Chongqing University, Chongqing 400030, China
| | - L Zhang
- Hepatobiliary Pancreatic Center,Tsinghua Changgung Hospital, Beijing 102200, China
| | - F Xie
- Function Department,Lanzhou Second People's Hospital, Lanzhou 730030, China
| | - Z W Li
- Hepatobiliary Surgery Department,Shenzhen Third People's Hospital, Shenzhen518112, China
| | - C L Hou
- Department of Interventional Radiology, the First Affiliated Hospital of USTC, Hefei 230001, China
| | - S J Hu
- Digestive Department,People's Hospital of Ningxia Hui Autonomous Region, Yinchuan 750002, China
| | - J W Lu
- Department of Interventional Radiology, Qufu People's Hospital, Qufu 273199, China
| | - X D Cui
- Department of Interventional Radiology, the People's Hospital of Guangxi Zhuang Autonomous Region, Nanning 530016, China
| | - T Lu
- Department of Gastroenterology, Yangquan Third People's Hospital, Yangquan 045099,China
| | - S S Yang
- Department of Gastroenterology, General Hospital of Ningxia Medical University , Yinchuan 750003, China
| | - W Liu
- Department of Interventional Radiology, Lishui People's Hospital, Zhejiang Province, Lishui 323050, China
| | - J P Shi
- Department of Liver Diseases, Affiliated Hospital of Hangzhou Normal University, Hangzhou 310015, China
| | - Y M Lei
- Interventional Radiology Department, People's Hospital of Tibet Autonomous Region, Lhasa 850001, China
| | - J L Bao
- Department of Gastroenterology, Shannan people's Hospital,Shannan 856004, China
| | - T Wang
- Department of Interventional Radiology, Yantai Yuhuangding Hospital Affiliated to Qingdao University, Yantai 264099,China
| | - W X Ren
- Interventional Treatment Center, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011,China
| | - X L Zhu
- Interventional Radiology Department, the First Affiliated Hospital of Suzhou University, Suzhou 215006, China
| | - Y Wang
- Department of Interventional Vascular Surgery, the Second Affiliated Hospital of Hainan Medical College, Haikou 570216, China
| | - L Yu
- Department of Interventional Radiology, Sanming First Hospital Affiliated to Fujian Medical University,Sanming 365001,China
| | - Q Yu
- Interventional Radiology Department, Fifth Medical Center of PLA General Hospital, Beijing 100039, China
| | - H L Xiang
- Department of Gastroenterology, Tianjin Third Central Hospital, Tianjin 300170, China
| | - W W Luo
- Deparment of Infectious Diseases, the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - X L Qi
- Center of Portal Hypertension Department of Radiology, Zhongda Hospital of Southeast University, Nanjing 210009, China
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8
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Leng L, Ma J, Zhang PP, Xu SC, Li X, Jin Y, Cai J, Tang R, Zhao L, He ZC, Li MS, Zhang H, Zhou LR, Wu ZH, Li TR, Zhu YP, Wang YJ, Wu HB, Ping YF, Yao XH, Zhu CH, Guo HT, Tan LY, Liang ZY, Bian XW, Zhang SY. Spatial region-resolved proteome map reveals mechanism of COVID-19-associated heart injury. Cell Rep 2022; 39:110955. [PMID: 35679865 PMCID: PMC9135696 DOI: 10.1016/j.celrep.2022.110955] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 04/28/2022] [Accepted: 05/23/2022] [Indexed: 11/28/2022] Open
Abstract
Direct myocardial and vascular injuries due to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection-driven inflammation is the leading cause of acute cardiac injury associated with coronavirus disease 2019 (COVID-19). However, in-depth knowledge of the injury characteristics of the heart affected by inflammation is lacking. In this study, using a quantitative spatial proteomics strategy that combines comparative anatomy, laser-capture microdissection, and histological examination, we establish a region-resolved proteome map of the myocardia and microvessels with obvious inflammatory cells from hearts of patients with COVID-19. A series of molecular dysfunctions of myocardia and microvessels is observed in different cardiac regions. The myocardia and microvessels of the left atrial are the most susceptible to virus infection and inflammatory storm, suggesting more attention should be paid to the lesion and treatment of these two parts. These results can guide in improving clinical treatments for cardiovascular diseases associated with COVID-19.
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Affiliation(s)
- Ling Leng
- Stem Cell and Regenerative Medicine Lab, Department of Medical Science Research Center, State Key Laboratory of Complex Severe and Rare Diseases, Translational Medicine Center, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China.
| | - Jie Ma
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 102206, China
| | - Pei-Pei Zhang
- Department of Pathology, The First Hospital Affiliated to University of Science and Technology of China (USTC), Intelligent Pathology Institute, Division of Life Sciences and Medicine, USTC, Hefei, Anhui 230036, China; Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China; Department of Pathology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Si-Chi Xu
- Department of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Xiao Li
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 102206, China
| | - Ye Jin
- Department of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Jun Cai
- Department of Pathology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Rui Tang
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Lei Zhao
- Department of Pathology, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Zhi-Cheng He
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Man-Sheng Li
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 102206, China
| | - Hui Zhang
- Department of Pathology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Liang-Rui Zhou
- Department of Pathology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Zhi-Hong Wu
- Stem Cell and Regenerative Medicine Lab, Department of Medical Science Research Center, State Key Laboratory of Complex Severe and Rare Diseases, Translational Medicine Center, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Tian-Ran Li
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Yun-Ping Zhu
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing 102206, China; Basic Medical School, Anhui Medical University, Anhui 230032, China
| | - Yu-Jie Wang
- Stem Cell and Regenerative Medicine Lab, Department of Medical Science Research Center, State Key Laboratory of Complex Severe and Rare Diseases, Translational Medicine Center, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Hai-Bo Wu
- Department of Pathology, The First Hospital Affiliated to University of Science and Technology of China (USTC), Intelligent Pathology Institute, Division of Life Sciences and Medicine, USTC, Hefei, Anhui 230036, China
| | - Yi-Fang Ping
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Xiao-Hong Yao
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Chu-Hong Zhu
- Department of Pathology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Hai-Tao Guo
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Le-Yong Tan
- Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China
| | - Zhi-Yong Liang
- Department of Pathology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China.
| | - Xiu-Wu Bian
- Department of Pathology, The First Hospital Affiliated to University of Science and Technology of China (USTC), Intelligent Pathology Institute, Division of Life Sciences and Medicine, USTC, Hefei, Anhui 230036, China; Institute of Pathology and Southwest Cancer Center, Southwest Hospital, Third Military Medical University (Army Medical University), Key Laboratory of Tumor Immunopathology, Ministry of Education of China, Chongqing 400038, China.
| | - Shu-Yang Zhang
- Department of Cardiology, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China; Tsinghua-Peking Center for Life Sciences, Tsinghua University, Beijing 100084, China.
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9
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Zhang PW, Zhang H, Li MS, Lin YD, Sun J, Lin MB, Liu YL. [Factors associated with selection of breast-conserving surgery in early female patients with breast cancer]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:2044-2052. [PMID: 34818853 DOI: 10.3760/cma.j.cn112338-20210516-00402] [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: 06/13/2023]
Abstract
Objective: To analyse the factors associated with the selection of breast- conserving surgery in early female patients with breast cancer. Methods: The targeted patients were females diagnosed with early-stage breast cancer and received surgical treatment at Fujian Provincial Hospital from January 1, 2015, to December 31, 2019. The targeted patients' clinical, demographic, and social-economic characteristics were extracted from the hospital health information system. Relevant information of their attending surgeons was collected through a smart-phone based self-respond online survey. We performed multivariate logistic regression to explore the associated factors with breast-conserving surgery (BCS) decision-making. Results: The age of the patient and attending surgeon and the economic development level of the patient's residence area were the associated factors with BCS decision-making of female early-stage breast cancer. By controlling the other factors unchanged, patients from middle-income areas were more likely to accept BCS (OR=1.91, 95%CI: 1.01-3.62, P=0.05) than those from low-income areas. When the attending surgeon was at the average age of 45 years old, increasing of 1 year age of patient led to 4% decrease of the probability of BCS (95%CI: -0.07 - -0.01, P=0.01). When the patient was at the average age of 52 years old, increasing of 1 year age of the attending surgeon reduced 10% of the probability of BCS (95%CI: -0.19 - -0.01, P=0.03). The interaction effects related to the age of attending surgeon and patient for some observations to choose BCS were statistically significant, and the average interaction effect was 0.06% (Z=2.11, sx =0.000 3, P<0.05). Conclusion: To promote breast-conserving surgery in the indicated early female patients with breast cancer, it is necessary to consider factors from both the surgeons and the patients.
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Affiliation(s)
- P W Zhang
- School of Health Policy and Management, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100710, China
| | - H Zhang
- Department of Oncology Surgery, Fujian Provincial Hospital, Fuzhou 350001, China
| | - M S Li
- School of Population Medicine and Public Health, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100710, China
| | - Y D Lin
- Department of Oncology Surgery, Fujian Provincial Hospital, Fuzhou 350001, China
| | - J Sun
- School of Health Policy and Management, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100710, China
| | - M B Lin
- Department of Oncology Surgery, Fujian Provincial Hospital, Fuzhou 350001, China
| | - Y L Liu
- School of Health Policy and Management, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100710, China
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10
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Chen ZD, Li MS, Wei B, Xi HQ, Chen L. [Evaluation of basic laparoscopic training under 5A teaching mode]. Zhonghua Wei Chang Wai Ke Za Zhi 2021; 24:711-717. [PMID: 34412189 DOI: 10.3760/cma.j.cn.441530-20200706-00403] [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 evaluate the rationality and effectiveness of basic laparoscopic training under 5A teaching mode. Methods: A prospective randomized controlled study was conducted. The teaching records of 70 trainees who received basic laparoscopic traning at the Laparoscopic Surgical Training Base in Chinese PLA General Hospital from July to December 2019 were analyzed. All the trainees participating in the laparoscopy training had obtained the national practicing physician certificates, including 12 junior physicians of our center, 9 intermediate physicians of our center, 19 advanced physicians, 13 postgraduate students, 8 doctoral students, and 9 surgical standardized training physicians. A random number table method was used to divide all the trainees into two groups: the traditional teaching group or the 5A teaching group (35 people in each group). In the traditional teaching group, the training of 4 modules of " precise beans, quincuncial piles, ring positioning and knot-tying suture" modules according to a fixed sequence and schedule was carried out. Each module had a learning time of 8 hours. In the 5A teaching group, the training started from five dimensions of analysis, aim, accomplishment, appraise and advance. Before conducting each stage of training, the actual operation ability of the trainees was tested, each class hour was designed individually, accurate teaching was conducted to the trainees, the ability of the trainees was evaluated dynamically, and the previous steps were cycled periodically based on class hours. The operating time and pass rate of trainees of two groups in the basic operation module of laparoscopy were statistically analyzed, and a hierarchical analysis of related influencing factors was conducted. Results: The time of above modules before training in the 5A teaching group and the traditional teaching group was similar (all P>0.05). After definitive training, the time required for trainees in 5A teaching group and traditional teaching group to complete the 4 modules was shortened to varying degrees. Compared to traditional teaching group, 5A teaching group spent less time in completing each project [precise beans: (63.2±10.1) seconds vs. (83.6±18.7) seconds, quincuncial piles: (56.2±7.3) seconds vs. (101.4±31.7) seconds, ring positioning: (84.2±13.7) seconds vs. (127.3±28.5) seconds, knot-tying suture: (263.2±41.8) seconds vs.(428.8±95.2) seconds, all P<0.05], and had higher pass rates [precise beans: 97.1% (34/35) vs. 80.0% (28/35), quincuncial piles: 91.4% (32/35) vs.71.4% (25/35), ring positioning: 100.0% (35/35) vs. 82.9% (29/35), knot-tying suture: 77.1% (27/35) vs. 60.0% (21/35), all P<0.05]. Among the junior trainees (junior physicians of our center, postgraduate students, doctoral students, and standardized surgical training physicians) and intermediate trainees (intermediate physicians of our center and advanced physicians), the 5A teaching group completed 3 modules (quincuncial piles, ring positioning and knot-tying suture) faster than the traditional teaching group [junior trainees: quincuncial piles (76.4±12.4) seconds vs. (139.8±41.6) seconds, ring positioning (92.2±20.5) seconds vs. (131.3±28.4) seconds, knot-tying suture (293.8±66.7) seconds vs. (444.3±103.3) seconds; intermediate trainees: quincuncial piles (51.4±5.9) seconds vs. (94.7±8.6) seconds, ring positioning (63.9±13.5) seconds vs. (87.5±18.6) seconds, knot-tying suture (210.1±35.6) seconds vs. (367.5±54.9) seconds, all P<0.05]. Conclusion: 5A teaching mode can acheive better training results compared with the traditional teaching mode in basic laparoscopic training, and is worthy of further popularization and application.
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Affiliation(s)
- Z D Chen
- Department of Abdominal Trauma Surgery, Faculty of General Surgery, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China CMDA Laparoscopic Surgeon Training Base (PLA General Hospital Base), Beijing 100853, China
| | - M S Li
- Department of Gastric Surgery, Faculty of General Surgery, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China Beijing Boyi Times Education & Technology Co., Ltd. Beijing 100122, China
| | - B Wei
- Department of Abdominal Trauma Surgery, Faculty of General Surgery, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China CMDA Laparoscopic Surgeon Training Base (PLA General Hospital Base), Beijing 100853, China
| | - H Q Xi
- Department of Abdominal Trauma Surgery, Faculty of General Surgery, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China CMDA Laparoscopic Surgeon Training Base (PLA General Hospital Base), Beijing 100853, China
| | - L Chen
- CMDA Laparoscopic Surgeon Training Base (PLA General Hospital Base), Beijing 100853, China Department of Gastric Surgery, Faculty of General Surgery, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
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11
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Li MS, Zheng SQ, Sheng ZH, He SY, Deng QY, Liang C, Wu ZP, Cao FQ, Du M. Determination of Azide Ions in Blood by Pentafluorobenzyl Derivation Followed by GC-MS. Fa Yi Xue Za Zhi 2021; 37:378-381. [PMID: 34379908 DOI: 10.12116/j.issn.1004-5619.2020.300304] [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] [Received: 03/22/2020] [Indexed: 11/30/2022]
Abstract
Abstract Objective To establish a method for determination of the azide ions in blood by gas chromatography-mass spectrometry (GC-MS) following pentafluorobenzyl derivatization. Methods A blood sample of 0.2 mL was placed into a 10 mL glass test tube, and the internal standard sodium cyanide, derivatization reagent pentafluorobenzyl bromide and catalyst tetradecyl benzyl dimethyl ammonium chloride were added in turn. After vortex mixing, the mixture was heated with low-power microwave for 3 min. After centrifugation, the organic phase was taken for GC-MS analysis. Results The azide ions in blood had a good linear relationship in the mass concentration range of 0.5 to 20 μg/mL. The lowest detection limit was 0.25 μg/mL and the relative recovery was 91.36%-94.58%. The method was successfully applied to a case of death from sodium azide poisoning. The mass concentration of azide ions in the blood of the dead was 11.11 μg/mL. Conclusion The method developed in this paper has strong specificity and is easy to operate, which is suitable for the rapid detection of azide ions in blood.
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Affiliation(s)
- M S Li
- Shanghai Key Laboratory of Crime Scene Evidence, Institute of Forensic Science of Shanghai Public Security Bureau, Shanghai 200083, China
| | - S Q Zheng
- Shanghai Key Laboratory of Crime Scene Evidence, Institute of Forensic Science of Shanghai Public Security Bureau, Shanghai 200083, China
| | - Z H Sheng
- Shanghai Key Laboratory of Crime Scene Evidence, Institute of Forensic Science of Shanghai Public Security Bureau, Shanghai 200083, China
| | - S Y He
- Shanghai Key Laboratory of Crime Scene Evidence, Institute of Forensic Science of Shanghai Public Security Bureau, Shanghai 200083, China
| | - Q Y Deng
- Shanghai Key Laboratory of Crime Scene Evidence, Institute of Forensic Science of Shanghai Public Security Bureau, Shanghai 200083, China
| | - C Liang
- Shanghai Key Laboratory of Crime Scene Evidence, Institute of Forensic Science of Shanghai Public Security Bureau, Shanghai 200083, China
| | - Z P Wu
- Shanghai Key Laboratory of Crime Scene Evidence, Institute of Forensic Science of Shanghai Public Security Bureau, Shanghai 200083, China
| | - F Q Cao
- Shanghai Key Laboratory of Crime Scene Evidence, Shanghai Research Institute of Criminal Science and Technology, Shanghai 200083, China
| | - M Du
- Institute of Criminal Science, Jiading Branch of Shanghai Public Security Bureau, Shanghai 201800, China
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12
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Zhang Y, Li MS, Liu GF, Lin XJ, Feng L, Xu AQ, Zhang L. [Analysis of Neisseria Meningitidis carriage characteristics among healthy population in Shandong province from 2008 to 2020]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:973-977. [PMID: 34445835 DOI: 10.3760/cma.j.cn112150-20210412-00358] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the carriage characteristics of Neisseria meningitidis (Nm) among healthy population of epidemic cerebrospinal meningitis in Shandong province. Methods: From April 2008 to April 2020, a total of 16 848 healthy population were recruited from Lixia District of Jinan City, Gaomi City of Weifang City, Jiaxiang County of Jining City, Wendeng District of Weihai City, Tancheng County of Linyi City and Linyi County of Dezhou City for the investigation.Throat swab samples were collected, Nm was isolated, cultured and identified, and Nm carrying characteristics of healthy population with different characteristics were analyzed. Results: Among the 16 848 healthy population, male accounted for 51.86% (8 737). A total of 136 Nm strains were isolated, and the carriage rate was 0.81%. Among the 136 Nm strains, serogroup B (60.29%) and ungroupable strains (23.53%) were dominant. Analysis of the Nm carriage rate, that were higher in the healthy population of Linyi (1.39%) and Jinan (1.14%), higher in 13-16 years old (1.60%) and 17-19 years old (1.10%) healthy population, and higher in male (1.02%). Conclusion: The Nm carriage rate of healthy population is relatively low in Shandong Province, and the proportion of serogroup B and ungroupable Nm is relatively high.
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Affiliation(s)
- Y Zhang
- Division of Expanded Immunization Program, Shandong Center for Disease Control and Prevention/Academy of Preventive Medicine/Shandong University/Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - M S Li
- Division of Expanded Immunization Program, Shandong Center for Disease Control and Prevention/Academy of Preventive Medicine/Shandong University/Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - G F Liu
- Division of Expanded Immunization Program, Shandong Center for Disease Control and Prevention/Academy of Preventive Medicine/Shandong University/Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - X J Lin
- Division of Expanded Immunization Program, Shandong Center for Disease Control and Prevention/Academy of Preventive Medicine/Shandong University/Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - L Feng
- Division of Expanded Immunization Program, Shandong Center for Disease Control and Prevention/Academy of Preventive Medicine/Shandong University/Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - A Q Xu
- Division of Expanded Immunization Program, Shandong Center for Disease Control and Prevention/Academy of Preventive Medicine/Shandong University/Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
| | - L Zhang
- Division of Expanded Immunization Program, Shandong Center for Disease Control and Prevention/Academy of Preventive Medicine/Shandong University/Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
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13
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Li BZ, Li MS, Huang JY, Chen YY, Lu YH. [Expanding the pandemic influenza preparedness framework to the epidemic of COVID-19]. Zhonghua Yu Fang Yi Xue Za Zhi 2020; 54:597-601. [PMID: 32842276 DOI: 10.3760/cma.j.cn112150-20200316-00357] [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: 06/11/2023]
Abstract
On March 11, 2020, WHO officially declared that COVID-19 had become Pandemic. As of March 31, the epidemic had affected more than 178 countries and regions, with more than 780 000 confirmed cases. The Pandemic Influenza Preparedness Framework for the sharing of influenza viruses and access to vaccines and other benefits (the 'PIP Framework' or 'Framework') is an international arrangement adopted by the World Health Organization in May 2011 to improve global pandemic influenza preparedness and response. Since the transmission route and transmission capacity of COVID-19 are similar to that of influenza A (H1N1) in 2009, which conforms to the basic elements of "human pandemic", and the epidemic scale has exceeded that of influenza A (H1N1), it is probable to incorporate COVID-19 epidemic response into PIPF, and at the same time to verify and improve PIPF in practice. It is recommended that WHO, other international organizations and relevant countries make full use of the PIPF system to respond to the epidemic and better coordinate national actions at the global level. At the same time, China should also make the planning and deploy of domestic epidemic prevention and control and international epidemic cooperation under the framework.
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Affiliation(s)
- B Z Li
- School of Public Health, Fudan University, Shanghai 200032, China
| | - M S Li
- School of Public Health, Fudan University, Shanghai 200032, China
| | - J Y Huang
- School of Public Health, Fudan University/National Health Commission Key Laboratory of Health Technology Assessment (Fudan University)/Fudan Global Health Institute, Shanghai 200032, China
| | - Y Y Chen
- School of Public Health, Fudan University/National Health Commission Key Laboratory of Health Technology Assessment (Fudan University)/Fudan Global Health Institute, Shanghai 200032, China
| | - Y H Lu
- School of Public Health, Fudan University/Ministry of Education Key Laboratory of Public Health and Safety (Fudan University) /Fudan Global Health Institute, Shanghai 200032, China
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14
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Liu CP, Gu YY, Li SY, Chen XB, Li LG, Jiang JJ, Zhao J, Fu L, Li MS, Chen ZC. [Transbronchial lung cryobiopsy in diffuse lung disease: a pathological analysis of 173 cases]. Zhonghua Jie He He Hu Xi Za Zhi 2020; 43:228-233. [PMID: 32164094 DOI: 10.3760/cma.j.issn.1001-0939.2020.03.018] [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 evaluate the value of transbronchial lung cryobiopsy (TBCB) in pathological diagnosis for diffuse lung disease. Methods: The clinicopathological data of 173 patients from the first affiliated hospital of Guangzhou medical university between Jaunary 2017 and June 2019 with transbronchial lung cryobiopsy of diffuse lung disease were retrospectively analyzed and summarized with review. Among 173 cases, TBCB and conventional transbronchial lung biopsy (TBLB) were performed in 54 patients. The size of biopsy samples and diagnostic yield were compared. Results: Among 173 cases, the diagnostic yield was 85.54% (148/173) , 160 (92.49%) cases provided definite diagnosis and valuable pathological results, according to age, sex, occupation, past history, contact history, smoking history, laboratory serology and imaging findings. Among 160 cases, there were 72 cases of known etiology (45.00%), 27 cases of idiopathic interstitial pneumonia (16.88%), 7 cases of granulomatous lesions (4.38%) and 54 cases of other types (33.75%). With TBCB and TBLB in 54 patients, the specimens sizes of TBCB and TBLB were (3.3±1.3) mm(2) and (1.0±0.3) mm(2) respectively (t'=12.67 P<0.01) . The diagnostic yields of TBCB and TBLB were 81.48% (44/54) and 42.59% (23/54) respectively (χ(2)=17.33, P<0.01) . The diagnostic yields of TBCB and TBLB for interstitial lung diseases were 48.15% (26/54) and 5.56% (3/54) respectively (χ(2)=24.94, P<0.01) . However, the diagnostic yields of TBCB and TBLB for the other diffuse lung disease except interstitial lung diseases were 33.33% (18/54) and 37.04% (20/54) respectively, with no significant difference (χ(2)=0.1624, P=0.687). Conclusion: Compared with TBLB, TBCB has obvious advantages and application value in the diagnosis of diffuse pulmonary diseases, especially interstitial pulmonary diseases.
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Affiliation(s)
- C P Liu
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Pathology Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510090, China
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Luo T, Li MS, Williams D, Phillippi S, Yu Q, Kantrow S, Kao YH, Celestin M, Lin WT, Tseng TS. Using social media for smoking cessation interventions: a systematic review. Perspect Public Health 2020; 141:50-63. [DOI: 10.1177/1757913920906845] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background: Previous studies have shown that smoking tobacco significantly increases both incidence and mortality rates for many diseases. Social media has become one of the most influential platforms for various smoking cessation interventions. However, results from smoking cessation interventions have differed from study to study. Limited studies have summarised cessation outcomes from social media–based interventions. Therefore, the objective of this review is to explore the effectiveness of using social media for smoking cessation. Methods: We searched PubMed, MEDLINE, PsycINFO, and CINAHL for articles between June 2008 and June 2018, and also assessed the references of selected articles. We included studies that used social media as intervention platforms, provided a baseline assessment before the intervention, and provided smoking cessation outcomes after the intervention. Results: We identified 13 original studies that enrolled between 16 and 1698 participants; 7-day Point Prevalence Abstinence (PPA) rate was the most frequently used measure of abstinence, with a range of 7%–75%, regardless of the measurement time, study design, and analysis methods. Social media–based smoking cessation interventions were effective, because (1) smokers reported higher 7-day PPA rates after intervention compared to baseline and (2) smokers reported higher 7-day PPA rates in intervention groups than in control groups. Moreover, at each time point, approximately half of all smokers in studies reporting abstinence were found to be biochemically abstinent. There were no significant differences in the effectiveness of smoking cessation outcomes between those that used existing popular social networking platforms (e.g. Pechmann et al’s studies) and those that used individually designed interactive platforms (e.g. MyLastDip, iQuit system, Quitxt system). Conclusions: This review highlights the effectiveness of social media–based smoking cessation intervention studies. Due to the widespread use of social media, as well as its low cost, we suggest embedding smoking cessation interventions within existing popular social media platforms.
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Affiliation(s)
- T Luo
- Behavioral and Community Health Sciences, School of Public Health, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - MS Li
- Behavioral and Community Health Sciences, School of Public Health, Louisiana State University Health Sciences Center, New Orleans, LA, USA
- School of Medicine, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - D Williams
- Behavioral and Community Health Sciences, School of Public Health, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - S Phillippi
- Behavioral and Community Health Sciences, School of Public Health, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - Q Yu
- Biostatistics, School of Public Health, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - S Kantrow
- School of Medicine, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - YH Kao
- Behavioral and Community Health Sciences, School of Public Health, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - M Celestin
- Behavioral and Community Health Sciences, School of Public Health, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - WT Lin
- Department of Global Community Health and Behavioral Sciences, Tulane University School of Public Health & Tropical Medicine, New Orleans, LA, USA
| | - TS Tseng
- Associate Professor, Behavioral and Community Health Sciences, School of Public Health, Louisiana State University Health Sciences Center, 2020 Gravier Street, Room 213, New Orleans, LA 70112, USA
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Santiago AAG, Lovisa LX, Medeiros PN, Li MS, Carreño NLV, Longo E, Paskocimas CA, Bomio MRD, Motta FV. Fast and simultaneous doping of Sr 0.9-x-y-zCa 0.1In 2O 4:(xEu 3+, yTm 3+, zTb 3+) superstructure by ultrasonic spray pyrolysis. Ultrason Sonochem 2019; 56:14-24. [PMID: 31101248 DOI: 10.1016/j.ultsonch.2019.03.028] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 02/18/2019] [Accepted: 03/27/2019] [Indexed: 06/09/2023]
Abstract
In the present work, Sr0.9-x-y-zCa0.1In2O4:(xEu3+, yTm3+, zTb3+) particles were synthesized by the ultrasonic spray pyrolysis (USP) method to obtain a single-phase white phosphorus formed by six different cations in solution within the lattice (superstructure). The samples were also structurally and morphologically characterized by X-ray diffraction (XRD) techniques and by field emission scanning electron microscopy (FE-SEM). The photoluminescent behavior and the characteristics of the emitted colors were studied by the variation in the co-doping of the rare earth elements. The Sr0.9Ca0.1In2O4 sample showed a near blue color emission, but all co-doped samples showed emission in white with very close chromaticity coordinates to the standard white (x = 0.33 and y = 0.33). The Tm3+ → Tb3+ (ET1), Tm3+ → Eu3+ (ET2) and Tb3+ → Eu3+ (ET3) Energy Transfers were proposed and are considered necessary for adjusting and controlling the desired color properties.
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Affiliation(s)
- A A G Santiago
- LSQM, DEMAT, UFRN, Natal, Campus Lagoa Nova, CEP 59078-900 Natal, RN, Brazil.
| | - L X Lovisa
- LSQM, DEMAT, UFRN, Natal, Campus Lagoa Nova, CEP 59078-900 Natal, RN, Brazil
| | - P N Medeiros
- IFBA, Instituto Federal da Bahia - Campus Jacobina, 44700-000 Jacobina, BA, Brazil
| | - M S Li
- IFSC, USP, Av. Trabalhador São Carlense, 400, CEP 13566-590 São Carlos, SP, Brazil
| | - N L V Carreño
- Graduate Program in Materials Science and Engineering, Technology Development Center, Federal University of Pelotas, 96010-000 Pelotas, RS, Brazil
| | - E Longo
- LIEC, DQ, UFSCar, CEP 13565-905 São Carlos, SP, Brazil
| | - C A Paskocimas
- LSQM, DEMAT, UFRN, Natal, Campus Lagoa Nova, CEP 59078-900 Natal, RN, Brazil
| | - M R D Bomio
- LSQM, DEMAT, UFRN, Natal, Campus Lagoa Nova, CEP 59078-900 Natal, RN, Brazil
| | - F V Motta
- LSQM, DEMAT, UFRN, Natal, Campus Lagoa Nova, CEP 59078-900 Natal, RN, Brazil
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17
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Kong Y, Xu K, Ye XC, Han CP, Li MS, Chen ZD. [Preliminary observation on the changes of T(1) weighted signal of globus pallidus after multiple intravenous injection of linear gadolinium contrast agent]. Zhonghua Yi Xue Za Zhi 2019; 99:1468-1472. [PMID: 31137136 DOI: 10.3760/cma.j.issn.0376-2491.2019.19.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the changes in signal intensity (SI) ratios of globus pallidus (GP) on unenhanced T(1)-weighted(T(1)WI)magnetic resonance imaging (MRI) scans between the first and last MRI using the linear gadolinium-based contrast agent (GBCAs) intravenously. Methods: Clinical and imaging data of 114 patients who underwent at least 4 consecutive enhanced MRI examinations at the Affiliated Hospital of Xuzhou Medical University between January 2016 and April 2018 were analyzed. The SI ratio of GP, thalamus and cerebrospinal fluid (CSF) were measured on unenhanced T(1)WI. The GP to thalamus SI ratio was calculated by dividing the SI in the GP by that in the thalamus, and so was the GP to CSF SI ratio. The difference of SI ratio in the same patient was analyzed by nonparametric tests, linear regression analysis was used to analyze clinical factors. Results: The SI ratio of GP-to-thalamus and GP-to-CSF after multiple enhancement were higher than before, and the difference was statistically significant. The SI ratio of GP-to-thalamus and GP-to-CSF before and after repeated contrast-enhanced were 1.036(1.010, 1.075), 1.104(1.074, 1.168); 4.215(3.590, 5.614), 5.409(4.213, 6.502), all P<0.01. The SI ratio differences showed a significant positive correlation with the number of enhanced examination(pons:b=0.023, P<0.01,CSF:b=0.279,P=0.034), and a significant negative correlation with the interval (pons: b=-0.002,P< 0.01, CSF: b=-0.023, P=0.039). There was no correlation with other clinical factors (all P>0.05). Conclusions: There is an increase in SI in the GP after serial injections of linear GBCAs, and there is a positive correlation with the times of enhanced examination, and a negative correlation with time interval.
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Affiliation(s)
- Y Kong
- Department of Radiology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, China
| | - K Xu
- Department of Radiology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, China
| | - X C Ye
- Department of Neurology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, China
| | - C P Han
- Department of Radiology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, China
| | - M S Li
- Department of Radiology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, China
| | - Z D Chen
- Department of Radiology, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, China
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18
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Zhang Y, Song LZ, Liu GF, Li MS, Lin XJ, Xu AQ. [Analysis of current epidemiological and clinical characteristics for laboratory confirmed epidemic cerebrospinal meningitis cases in Shandong Province, 2007-2016]. Zhonghua Yu Fang Yi Xue Za Zhi 2019; 53:169-173. [PMID: 30744291 DOI: 10.3760/cma.j.issn.0253-9624.2019.02.009] [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 analyze epidemiological and clinical characteristics of laboratory confirmed epidemic cerebrospinal meningitis cases. Methods: Epidemiological and clinical informations and cerebrospinal fluid (CSF) and blood specimens of AMES (acute meningitis/encephalitis syndrome) cases were collected in the six sentinel hospitals from 2007 to 2016. neisseria meningitides (Nm) species and serogroup identification were detected by the methods of real-time fluorescent quantitative polymerase chain reaction (Real-time PCR) and bacterial culture, and epidemiological and clinical characteristics of laboratory confirmed epidemic cerebrospinal meningitis cases were analyzed. Results: 6 809 AMES cases were reported from 2007 to 2016. Total 4 422 cases were detected, and 90 cases were Nm positive. Through the methods of Real-time PCR, bacterial blood culture and CSF culture, the numbers of Nm positive cases were 90, 2 and 1 respectively. Twenty-two Nm cases were identified from 2007 to 2011 (4 cases were ungrouped), which with the highest incidence in serogroup C cases (17/18), and one cases was ungroupable Nm. Nm laboratory confirmed cases (68 cases) were increased dramatically and mainly occurred in serogroup B cases (43/67, 64.2%) from 2012 to 2016, with serogroup C cases highly decreased (5/67, 7.5%) and ungroupable Nm cases increased (13/67, 19.4%) meanwhile. Serogroup W135 and X cases were first detected at 2012 and 2014, and serogroup A remaining a low level which only detected one case at 2013. The morbidity of epidemic cerebrospinal meningitis was occured in the whole year, and mainly in winter and spring. The ratio of Nm laboratory confirmed cases to AMES cases during November to May (3.5%, 67/1 920) was higher than that during June to October (0.9%, 23/2 502) (χ(2)=34.45, P<0.001). Most Nm cases were children, students and farmers, and account for 30.0% (27/90), 31.1% (28/90), 18.9% (17/90), respectively. The majority of Nm cases were under 20 years old (60/90, 66.67%), and serogroup C cases (17/22, 77.3%) mainly occurred in over 12 years old population, while serogroup B (24/43, 55.8%) and ungroupable (6/14) cases mainly occurred in under 12 years old population. The main clinical symptoms of epidemic cerebrospinal meningitis cases were fever (78/90, 86.7%), headache (59/90, 65.6%) and vomiting (51/90, 56.7%). Misdiagnosis rate of admitting diagnosis was up to 87.8% (79/90) for the reason of atypical features in specific symptoms and blood or CSF positive index. The well-healed ratio in correct diagnosed group (7/11) was higher than that in misdiagnosed group (2.5%, 2/79) (χ(2)=40.61, P<0.001). Conclusion: The clinical symptoms of epidemic cerebrospinal meningitis cases were atypical, and the diagnosed sensitivity and accuracy would be improved by enhanced molecular biology detection. The predominant epidemic serogroup of Nm switched from serogroup C to B, and the key work was surveaylance of serogroup transition.
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Affiliation(s)
- Y Zhang
- Division of Expanded Immunization Program, Shandong Center for Disease Control and Prevention; Academy of Preventive Medicine, Shandong University; Shandong Provincial Key Laboratory of Infectious Disease Control and Prevention, Jinan 250014, China
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19
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Zheng LM, Wang XR, Lü WM, Li CJ, Paudel TR, Liu ZQ, Huang Z, Zeng SW, Han K, Chen ZH, Qiu XP, Li MS, Yang S, Yang B, Chisholm MF, Martin LW, Pennycook SJ, Tsymbal EY, Coey JMD, Cao WW. Ambipolar ferromagnetism by electrostatic doping of a manganite. Nat Commun 2018; 9:1897. [PMID: 29765044 PMCID: PMC5953920 DOI: 10.1038/s41467-018-04233-5] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [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: 10/03/2017] [Accepted: 04/12/2018] [Indexed: 11/09/2022] Open
Abstract
Complex-oxide materials exhibit physical properties that involve the interplay of charge and spin degrees of freedom. However, an ambipolar oxide that is able to exhibit both electron-doped and hole-doped ferromagnetism in the same material has proved elusive. Here we report ambipolar ferromagnetism in LaMnO3, with electron-hole asymmetry of the ferromagnetic order. Starting from an undoped atomically thin LaMnO3 film, we electrostatically dope the material with electrons or holes according to the polarity of a voltage applied across an ionic liquid gate. Magnetotransport characterization reveals that an increase of either electron-doping or hole-doping induced ferromagnetic order in this antiferromagnetic compound, and leads to an insulator-to-metal transition with colossal magnetoresistance showing electron-hole asymmetry. These findings are supported by density functional theory calculations, showing that strengthening of the inter-plane ferromagnetic exchange interaction is the origin of the ambipolar ferromagnetism. The result raises the prospect of exploiting ambipolar magnetic functionality in strongly correlated electron systems.
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Affiliation(s)
- L M Zheng
- Condensed Matter Science and Technology Institute, School of Science, Harbin Institute of Technology, Harbin, 150081, China
| | - X Renshaw Wang
- School of Physical and Mathematical Sciences & School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore.
| | - W M Lü
- Condensed Matter Science and Technology Institute, School of Science, Harbin Institute of Technology, Harbin, 150081, China.
| | - C J Li
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - T R Paudel
- Department of Physics and Astronomy & Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, Nebraska, 68588, USA
| | - Z Q Liu
- School of Materials Science and Engineering, Beihang University, Beijing, 100191, China
| | - Z Huang
- NUSNNI-NanoCore, National University of Singapore, Singapore, 117411, Singapore
| | - S W Zeng
- NUSNNI-NanoCore, National University of Singapore, Singapore, 117411, Singapore
| | - Kun Han
- NUSNNI-NanoCore, National University of Singapore, Singapore, 117411, Singapore
| | - Z H Chen
- Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, CA, 94720, USA.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.,School of Materials Science and Engineering, Harbin Institute of Technology, Shenzhen, Guangzhou, 518055, China
| | - X P Qiu
- Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology & Pohl Institute of Solid State Physics & School of Physics Science and Engineering, Tongji University, Shanghai, 200092, China
| | - M S Li
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - Shize Yang
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - B Yang
- Condensed Matter Science and Technology Institute, School of Science, Harbin Institute of Technology, Harbin, 150081, China
| | - Matthew F Chisholm
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - L W Martin
- Department of Materials Science and Engineering, University of California, Berkeley, Berkeley, CA, 94720, USA.,Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - S J Pennycook
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 117575, Singapore
| | - E Y Tsymbal
- Department of Physics and Astronomy & Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, Nebraska, 68588, USA
| | - J M D Coey
- School of Physics, Trinity College, Dublin, 2, Ireland.,Faculty of Materials Science and Engineering, Beihang University, Beijing, 100191, China
| | - W W Cao
- Condensed Matter Science and Technology Institute, School of Science, Harbin Institute of Technology, Harbin, 150081, China.,Department of Mathematics and Materials Research Institute, The Pennsylvania State University, University Park, PA, 16802, USA
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20
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Souza ELS, Sczancoski JC, Nogueira IC, Almeida MAP, Orlandi MO, Li MS, Luz RAS, Filho MGR, Longo E, Cavalcante LS. Structural evolution, growth mechanism and photoluminescence properties of CuWO 4 nanocrystals. Ultrason Sonochem 2017; 38:256-270. [PMID: 28633825 DOI: 10.1016/j.ultsonch.2017.03.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 03/06/2017] [Accepted: 03/06/2017] [Indexed: 05/27/2023]
Abstract
Copper tungstate (CuWO4) crystals were synthesized by the sonochemistry (SC) method, and then, heat treated in a conventional furnace at different temperatures for 1h. The structural evolution, growth mechanism and photoluminescence (PL) properties of these crystals were thoroughly investigated. X-ray diffraction patterns, micro-Raman spectra and Fourier transformed infrared spectra indicated that crystals heat treated and 100°C and 200°C have water molecules in their lattice (copper tungstate dihydrate (CuWO4·2H2O) with monoclinic structure), when the crystals are calcinated at 300°C have the presence of two phase (CuWO4·2H2O and CuWO4), while the others heat treated at 400°C and 500°C have a single CuWO4 triclinic structure. Field emission scanning electron microscopy revealed a change in the morphological features of these crystals with the increase of the heat treatment temperature. Transmission electron microscopy (TEM), high resolution-TEM images and selected area electron diffraction were employed to examine the shape, size and structure of these crystals. Ultraviolet-Visible spectra evidenced a decrease of band gap values with the increase of the temperature, which were correlated with the reduction of intermediary energy levels within the band gap. The intense photoluminescence (PL) emission was detected for the sample heat treat at 300°C for 1h, which have a mixture of CuWO4·2H2O and CuWO4 phases. Therefore, there is a synergic effect between the intermediary energy levels arising from these two phases during the electronic transitions responsible for PL emissions.
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Affiliation(s)
- E L S Souza
- PPGQ-CCN-GERATEC, Universidade Estadual do Piauí, Rua: João Cabral, N. 2231, P.O. Box 381, 64002-150 Teresina, PI, Brazil
| | - J C Sczancoski
- DQ-UFSCar, Universidade Federal de São Carlos, P.O. Box 676, São Carlos, SP 13565-905, Brazil
| | - I C Nogueira
- ICE-Universidade Federal do Amazonas, Av. Rodrigo Otávio Japiim, P.O. Box 670, 69077-000 Manaus, AM, Brazil
| | - M A P Almeida
- CCT-Universidade Federal do Maranhão, P.O. Box 322, 65080-805 São Luís, MA, Brazil
| | - M O Orlandi
- Departamento de Físico-Química, Universidade Estadual Paulista, 14800-060 Araraquara, SP, Brazil
| | - M S Li
- IFSC-Universidade de São Paulo, P.O. Box 369, 13560-970 São Carlos, SP, Brazil
| | - R A S Luz
- PPGQ-CCN-GERATEC, Universidade Estadual do Piauí, Rua: João Cabral, N. 2231, P.O. Box 381, 64002-150 Teresina, PI, Brazil
| | - M G R Filho
- PPGQ-CCN-GERATEC, Universidade Estadual do Piauí, Rua: João Cabral, N. 2231, P.O. Box 381, 64002-150 Teresina, PI, Brazil
| | - E Longo
- Departamento de Físico-Química, Universidade Estadual Paulista, 14800-060 Araraquara, SP, Brazil
| | - L S Cavalcante
- PPGQ-CCN-GERATEC, Universidade Estadual do Piauí, Rua: João Cabral, N. 2231, P.O. Box 381, 64002-150 Teresina, PI, Brazil.
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21
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Xu JM, Wang Y, Wang YL, Wang Y, Liu T, Ni M, Li MS, Lin L, Ge FJ, Gong C, Gu JY, Jia R, Wang HF, Chen YL, Liu RR, Zhao CH, Tan ZL, Jin Y, Zhu YP, Ogino S, Qian ZR. PIK3CA Mutations Contribute to Acquired Cetuximab Resistance in Patients with Metastatic Colorectal Cancer. Clin Cancer Res 2017; 23:4602-4616. [PMID: 28424201 DOI: 10.1158/1078-0432.ccr-16-2738] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 12/06/2016] [Accepted: 04/10/2017] [Indexed: 12/15/2022]
Abstract
Purpose: Mutations in KRAS are considered to be the main drivers of acquired resistance to epidermal growth factor receptor (EGFR) blockade in patients with metastatic colorectal cancer (mCRC). However, the potential role of other genes downstream of the EGFR signaling pathway in conferring acquired resistance has not been extensively investigated.Experimental Design: Using circulating tumor DNA (ctDNA) from patients with mCRC and with acquired cetuximab resistance, we developed a targeted amplicon ultra-deep sequencing method to screen for low-abundance somatic mutations in a panel of genes that encode components of the EGFR signaling pathway. Mutations with significantly increased variant frequencies upon disease progression were selected by using quartile analysis. The functional consequences of the identified mutations were validated in cultured cells.Results: We analyzed 32 patients with acquired cetuximab resistance in a development cohort. Of them, seven (22%) carried five novel PIK3CA mutations, whereas eight (25%) carried previously reported KRAS mutations. Functional studies showed that novel PIK3CA mutations (all in exon 19; p.K944N, p.F930S, p.V955G, p.V955I, and p.K966E) promote cell viability in the presence of cetuximab. Only one novel PIK3CA mutation (p.K944N) was verified in one of the 27 patients with acquired resistance in a validation cohort, simultaneous KRAS and PIK3CA hotspot mutations were detected in two patients. Among the above 59 acquired resistance patients, those with PIK3CA or RAS mutations detected in ctDNA showed a pronounced decrease in progression-free survival than patients with no mutation.Conclusions: The PIK3CA mutations may potentially contribute to acquired cetuximab resistance in patients with mCRC. Clin Cancer Res; 23(16); 4602-16. ©2017 AACR.
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Affiliation(s)
- Jian-Ming Xu
- Affiliated Hospital Cancer Center, Academy of Military Medical Sciences, Beijing, China.
| | - Yan Wang
- Affiliated Hospital Cancer Center, Academy of Military Medical Sciences, Beijing, China
| | | | - Yan Wang
- QuestGenomics Biotechnology Co, Ltd. Nanjing, Jiangsu, China.,Gnomegen, San Diego, California
| | - Tao Liu
- Center of Computational Biology, Institute of Basic Medical Sciences, Beijing, China
| | - Ming Ni
- Beijing Institute of Radiation Medicine, Beijing, China
| | - Man-Sheng Li
- Beijing Proteome Research Center, Beijing Institute of Radiation Medicine, Beijing, China
| | - Li Lin
- Affiliated Hospital Cancer Center, Academy of Military Medical Sciences, Beijing, China
| | - Fei-Jiao Ge
- Affiliated Hospital Cancer Center, Academy of Military Medical Sciences, Beijing, China
| | - Chun Gong
- QuestGenomics Biotechnology Co, Ltd. Nanjing, Jiangsu, China
| | - Jun-Yan Gu
- QuestGenomics Biotechnology Co, Ltd. Nanjing, Jiangsu, China
| | - Ru Jia
- Affiliated Hospital Cancer Center, Academy of Military Medical Sciences, Beijing, China
| | - He-Fei Wang
- Affiliated Hospital Cancer Center, Academy of Military Medical Sciences, Beijing, China
| | - Yu-Ling Chen
- Affiliated Hospital Cancer Center, Academy of Military Medical Sciences, Beijing, China
| | - Rong-Rui Liu
- Affiliated Hospital Cancer Center, Academy of Military Medical Sciences, Beijing, China
| | - Chuan-Hua Zhao
- Affiliated Hospital Cancer Center, Academy of Military Medical Sciences, Beijing, China
| | - Zhao-Li Tan
- Affiliated Hospital Cancer Center, Academy of Military Medical Sciences, Beijing, China
| | - Yang Jin
- Affiliated Hospital Cancer Center, Academy of Military Medical Sciences, Beijing, China
| | - Yun-Ping Zhu
- Beijing Proteome Research Center, Beijing Institute of Radiation Medicine, Beijing, China
| | - Shuji Ogino
- Division of MPE Molecular Pathological Epidemiology, Department of Pathology, Brigham and Women's Hospital, and Harvard Medical School, Boston, Massachusetts.,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts.,Department of Oncologic Pathology, Dana-Farber Cancer Institute, and Harvard Medical School, Boston, Massachusetts
| | - Zhi-Rong Qian
- Department of Oncologic Pathology, Dana-Farber Cancer Institute, and Harvard Medical School, Boston, Massachusetts
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22
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Li ZY, Li MS, Yu JL, Lin LL, Zhang JY. [Correlation between estrogen receptorα 36 and HER2 expression]. Zhonghua Bing Li Xue Za Zhi 2016; 45:648-649. [PMID: 27646898 DOI: 10.3760/cma.j.issn.0529-5807.2016.09.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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23
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Kimmoun O, Hsu HC, Branger H, Li MS, Chen YY, Kharif C, Onorato M, Kelleher EJR, Kibler B, Akhmediev N, Chabchoub A. Modulation Instability and Phase-Shifted Fermi-Pasta-Ulam Recurrence. Sci Rep 2016; 6:28516. [PMID: 27436005 PMCID: PMC4951648 DOI: 10.1038/srep28516] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [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: 03/11/2016] [Accepted: 05/20/2016] [Indexed: 11/09/2022] Open
Abstract
Instabilities are common phenomena frequently observed in nature, sometimes leading to unexpected catastrophes and disasters in seemingly normal conditions. One prominent form of instability in a distributed system is its response to a harmonic modulation. Such instability has special names in various branches of physics and is generally known as modulation instability (MI). The MI leads to a growth-decay cycle of unstable waves and is therefore related to Fermi-Pasta-Ulam (FPU) recurrence since breather solutions of the nonlinear Schrödinger equation (NLSE) are known to accurately describe growth and decay of modulationally unstable waves in conservative systems. Here, we report theoretical, numerical and experimental evidence of the effect of dissipation on FPU cycles in a super wave tank, namely their shift in a determined order. In showing that ideal NLSE breather solutions can describe such dissipative nonlinear dynamics, our results may impact the interpretation of a wide range of new physics scenarios.
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Affiliation(s)
- O Kimmoun
- Aix-Marseille University, CNRS, Centrale Marseille, IRPHE, Marseille, France
| | - H C Hsu
- Tainan Hydraulics Laboratory, National Cheng Kung University, Taiwan
| | - H Branger
- Aix-Marseille University, CNRS, Centrale Marseille, IRPHE, Marseille, France
| | - M S Li
- Tainan Hydraulics Laboratory, National Cheng Kung University, Taiwan
| | - Y Y Chen
- Tainan Hydraulics Laboratory, National Cheng Kung University, Taiwan
| | - C Kharif
- Aix-Marseille University, CNRS, Centrale Marseille, IRPHE, Marseille, France
| | - M Onorato
- Dipartimento di Fisica Generale, Universita degli Studi di Torino, Torino, Italy
| | - E J R Kelleher
- Femtosecond Optics Group, Department of Physics, Imperial College London, London, UK
| | - B Kibler
- Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS UBFC, Dijon, France
| | - N Akhmediev
- Optical Sciences Group, Research School of Physics and Engineering, Institute of Advanced Studies, The Australian National University, Canberra ACT 020, Australia
| | - A Chabchoub
- Department of Ocean Technology Policy and Environment, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba 277-8563, Japan.,Department of Mechanical Engineering, Aalto University, 02150 Espoo, Finland
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24
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Wei FJ, Cai CY, Yu P, Lv J, Ling C, Shi WT, Jiao HX, Chang BC, Yang FH, Tian Y, Li MS, Wang YH, Zou L, Shi JM, Chen LM, Li WD. Quantitative candidate gene association studies of metabolic traits in Han Chinese type 2 diabetes patients. Genet Mol Res 2015; 14:15471-81. [PMID: 26634513 DOI: 10.4238/2015.november.30.25] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Recent genome-wide association studies have identified many loci associated with type 2 diabetes mellitus (T2DM), hyperuricemia, and obesity in various ethnic populations. However, quantitative traits have been less well investigated in Han Chinese T2DM populations. We investigated the association between candidate gene single nucleotide polymorphisms (SNPs) and metabolic syndrome-related quantitative traits in Han Chinese T2DM subjects. Unrelated Han Chinese T2DM patients (1975) were recruited. Eighty-six SNPs were genotyped and tested for association with quantitative traits including lipid profiles, blood pressure, body mass index (BMI), serum uric acid (SUA), glycated hemoglobin (HbA1c), plasma glucose [fasting plasma glucose (FPG)], plasma glucose 120 min post-OGTT (P2PG; OGTT = oral glucose tolerance test), and insulin resistance-related traits. We found that CAMTA1, ABI2, VHL, KAT2B, PKHD1, ESR1, TOX, SLC30A8, SFI1, and MYH9 polymorphisms were associated with HbA1c, FPG, and/or P2PG; GCK, HHEX, TCF7L2, KCNQ1, and TBX5 polymorphisms were associated with insulin resistance-related traits; ABCG2, SLC2A9, and PKHD1 polymorphisms were associated with SUA; CAMTA1, VHL, KAT2B, PON1, NUB1, SLITRK5, SMAD3, FTO, FANCA, and PCSK2 polymorphisms were associated with blood lipid traits; CAMTA1, SPAG16, TOX, KCNQ1, ACACB, and MYH9 polymorphisms were associated with blood pressure; and UBE2E3, SPAG16, SLC2A9, CDKAL1, CDKN2A/B, TCF7L2, SMAD3, and PNPLA3 polymorphisms were associated with BMI (all P values <0.05). Some of the candidate genes were associated with metabolic and anthropometric traits in T2DM in Han Chinese. Although none of these associations reached genome-wide significance (P < 5 x 10(-8)), genes and loci identified in this study are worthy of further replication and investigation.
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Affiliation(s)
- F J Wei
- Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - C Y Cai
- Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - P Yu
- Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - J Lv
- Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - C Ling
- Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - W T Shi
- Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - H X Jiao
- Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - B C Chang
- Metabolic Diseases Hospital, Tianjin Medical University, Tianjin, China
| | - F H Yang
- Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Y Tian
- Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - M S Li
- Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - Y H Wang
- Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - L Zou
- Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - J M Shi
- Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - L M Chen
- Metabolic Diseases Hospital, Tianjin Medical University, Tianjin, China
| | - W D Li
- Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
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25
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Shi WT, Cai CY, Li MS, Ling C, Li WD. Han Chinese patients with dopa-responsive dystonia exhibit a low frequency of exonic deletion in the GCH1 gene. Genet Mol Res 2015; 14:11185-90. [PMID: 26400349 DOI: 10.4238/2015.september.22.12] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We identified three novel mutations of the GTP cyclohydrolase 1 (GCH1) gene in patients with familial dopa-responsive dystonia (DRD), but were unable to identify meaningful sporadic mutations in patients with no obvious family DRD background. To investigate whether GCH1 regional deletions account for the etiology of DRD, we screened for heterozygous exonic deletions in DRD families and in patients with sporadic DRD. Multiple ligation-dependent probe amplification analysis and quantitative real-time polymerase chain reaction amplification was performed in all members of our DRD cohort and in controls to detect exonic deletions in GCH1, tyrosine hydroxylase, and the epsilon-sarcoglycan-encoding (SGCE) genes. Using these techniques, we detected a GCH1 exon 1 heterozygous deletion in 1 of 10 patients with sporadic DRD. Therefore, we concluded that exonic deletion in the GCH1 gene only accounted for the etiology in a small percentage of patients with sporadic DRD in our Han Chinese cohort.
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Affiliation(s)
- W T Shi
- Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - C Y Cai
- Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - M S Li
- Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - C Ling
- Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
| | - W D Li
- Research Center of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
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Li MS, Peng YL, Jiang JH, Xue HX, Wang P, Zhang PJ, Han RW, Chang M, Wang R. Neuropeptide S Increases locomotion activity through corticotropin-releasing factor receptor 1 in substantia nigra of mice. Peptides 2015; 71:196-201. [PMID: 26239581 DOI: 10.1016/j.peptides.2015.07.024] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 07/30/2015] [Accepted: 07/30/2015] [Indexed: 11/26/2022]
Abstract
Neuropeptide S (NPS), the endogenous ligand of NPS receptor (NPSR), was reported to be involved in the regulation of arousal, anxiety, locomotion, learning and memory. The basal ganglia play a crucial role in regulating of locomotion-related behavior. Here, we found that NPSR protein of mouse was distributed in the substantia nigra (SN) and globus pallidus (LGP) by immunohistochemical analysis. However, less is known about the direct locomotion-related effects of NPS in both SN and LGP. Therefore, we investigated the role of NPS in locomotion processes, using the open field test. The results showed that NPS infused into the SN (0.03, 0.1, 1nmol) or LGP (0.01, 0.03, 0.1nmol) dose-dependently increased the locomotor activity in mice. SHA 68 (50mg/kg), an antagonist of NPSR, blocked the locomotor stimulant effect of NPS in both nuleus. Meanwhile, these effects of NPS were also counteracted by the CRF1 receptor antagonist antalarmin (30mg/kg, i.p.). In addition, we found that the expression of c-Fos was significantly increased after NPS was delivered into SN. In conclusion, these results indicate that NPS-NPSR system may regulate locomotion together with the CRF1 system in SN.
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Affiliation(s)
- M S Li
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou 730000, China
| | - Y L Peng
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou 730000, China
| | - J H Jiang
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou 730000, China
| | - H X Xue
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou 730000, China
| | - P Wang
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou 730000, China
| | - P J Zhang
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou 730000, China
| | - R W Han
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou 730000, China
| | - M Chang
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou 730000, China.
| | - R Wang
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, Key Laboratory of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou 730000, China.
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Sacramento RL, Oliveira AN, Alves BX, Silva BA, Li MS, Wolff W, Cesar CL. Matrix isolation sublimation: An apparatus for producing cryogenic beams of atoms and molecules. Rev Sci Instrum 2015; 86:073109. [PMID: 26233358 DOI: 10.1063/1.4926774] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We describe the apparatus to generate cryogenic beams of atoms and molecules based on matrix isolation sublimation. Isolation matrices of Ne and H2 are hosts for atomic and molecular species which are sublimated into vacuum at cryogenic temperatures. The resulting cryogenic beams are used for high-resolution laser spectroscopy. The technique also aims at loading atomic and molecular traps.
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Affiliation(s)
- R L Sacramento
- Instituto de Física, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, 21941-972 Rio de Janeiro, RJ, Brazil
| | - A N Oliveira
- Instituto de Física, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, 21941-972 Rio de Janeiro, RJ, Brazil
| | - B X Alves
- Instituto de Física, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, 21941-972 Rio de Janeiro, RJ, Brazil
| | - B A Silva
- Instituto de Física, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, 21941-972 Rio de Janeiro, RJ, Brazil
| | - M S Li
- Instituto de Física de São Carlos, Universidade de São Paulo, Ave. Trabalhador São Carlense, 400, 13565-590 São Carlos, SP, Brazil
| | - W Wolff
- Instituto de Física, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, 21941-972 Rio de Janeiro, RJ, Brazil
| | - C L Cesar
- Instituto de Física, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, 21941-972 Rio de Janeiro, RJ, Brazil
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Li MS, Lau TCK, Chan HLY, Tsui SKW. Functional significance of hepatitis B virus subgenotype Cs genomic markers. Hong Kong Med J 2014; 20 Suppl 6:28-30. [PMID: 25482968] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023] Open
Affiliation(s)
- M S Li
- School of Biomedical Sciences, The Chinese University of Hong Kong
| | - T C K Lau
- Department of Biology and Chemistry, The City University of Hong Kong
| | - H L Y Chan
- Department of Medicine and Therapeutics, The Chinese University of Hong Kong
| | - S K W Tsui
- School of Biomedical Sciences, & Hong Kong Bioinformatics Centre, & Centre for Microbial Genomics and Proteomics, The Chinese University of Hong Kong
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Dong LM, Zhang XY, Teng H, Li MS, Wang P. Meta-analysis demonstrates no association between XRCC1 Arg399Gln polymorphism and bladder cancer risk. Genet Mol Res 2014; 13:9976-85. [PMID: 25501209 DOI: 10.4238/2014.november.28.2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We examined whether the X-ray repair cross-complementing group 1 (XRCC1) Arg399Gln polymorphism is a risk factor for bladder cancer by conducting a meta-analysis. We searched the Pubmed and Embase databases for study retrieval. This meta-analysis examined 16 case-control studies, including 892 prostate cancer cases and 1020 healthy controls. Meta-analysis results based on these studies showed no significant association between the XRCC1 Arg399Gln polymorphism and bladder cancer risk in comparisons of the glutamine (Gln) allele vs arginine (Arg) allele, Arg/Arg vs (Gln/Gln + Gln/Arg), Gln/Gln vs (Gln/Arg + Arg/Arg), Gln/Gln vs Arg/Arg, and Gln/Arg vs Arg/Arg [odds ratio (OR) = 0.96, 95% confidence interval (CI) = 0.80-1.16, P = 0.70; OR = 1.13, 95%CI = 0.70-1.82, P = 0.62; OR = 0.92, 95%CI = 0.79-1.07, P = 0.29; OR = 0.90, 95%CI = 0.69-1.16, P = 0.42; OR = 0.89, 95%CI = 0.75-1.05, P = 0.17, respectively]. In subgroup analysis by ethnicity, no association was observed between the XRCC1 Arg399Gln polymorphism and bladder cancer risk in Caucasian, Mongoloid, or black populations. We identified no association between the XRCC1 Arg399Gln polymorphism and bladder cancer risk.
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Affiliation(s)
- L M Dong
- Department of Urological Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - X Y Zhang
- Department of Urological Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - H Teng
- Department of Neurosurgery, The Shengjing Affiliated Hospital of China Medical University, Shenyang, China
| | - M S Li
- Department of Emergency Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - P Wang
- Department of Urological Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
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Li MS, Liu JL, Wu Y, Wang P, Teng H. Meta-analysis demonstrates no association between p53 codon 72 polymorphism and prostate cancer risk. Genet Mol Res 2011; 10:2924-33. [PMID: 22179964 DOI: 10.4238/2011.november.29.3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [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
We examined whether p53 codon 72 polymorphism confers prostate cancer risk by conducting a meta-analysis. Two investigators independently searched the Pubmed, Embase and CBM databases. This meta-analysis was made of seven case-control studies, that included 892 prostate cancer cases and 1020 healthy controls. Meta-analysis results based on all the studies showed no significant association between p53 codon 72 polymorphism and prostate cancer risk in the comparisons of Pro allele vs Arg allele; Pro/Pro + Pro/Arg vs Arg/Arg; Pro/Pro vs Pro/Arg + Arg/Arg; Pro/Pro vs Arg/Arg, and Pro/Arg vs Arg/Arg [odds ratio (OR) = 1.09, 95% confidence interval (CI) = 0.87-1.36, P = 0.47; OR = 1.22, 95%CI = 0.86-1.73, P = 0.27; OR = 1.03, 95%CI = 0.62-1.72, P = 0.91; OR = 1.22, 95%CI = 0.66-2.26, P = 0.52; OR = 1.25, 95%CI = 0.84-1.87, P = 0.27, respectively]. In the subgroup analysis by ethnicity, no association was found between p53 codon 72 polymorphism and prostate cancer risk both in Caucasian and Asian populations. We found no association between p53 codon 72 polymorphism and prostate cancer risk.
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Affiliation(s)
- M S Li
- Department of Urological Surgery, The Fourth Affiliated Hospital of China Medical University, Shenyang, China
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Abstract
Dynamics of a single stranded DNA, which can form a hairpin have been studied in the constant force ensemble. Using Langevin dynamics simulations, we obtained the force-temperature diagram, which differs from the theoretical prediction based on the lattice model. Probability analysis of the extreme bases of the stem revealed that at high temperature, the hairpin to coil transition is entropy dominated and the loop contributes significantly in its opening. However, at low temperature, the transition is force driven and the hairpin opens from the stem side. It is shown that the elastic energy plays a crucial role at high force. As a result, the force-temperature diagram differs significantly with the theoretical prediction.
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Affiliation(s)
- Garima Mishra
- Department of Physics, Banaras Hindu University, Varanasi 221 005, India
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Mishra RK, Mishra G, Li MS, Kumar S. Effect of shear force on the separation of double-stranded DNA. Phys Rev E Stat Nonlin Soft Matter Phys 2011; 84:032903. [PMID: 22060439 DOI: 10.1103/physreve.84.032903] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Revised: 06/30/2011] [Indexed: 05/31/2023]
Abstract
Using the Langevin dynamics simulation, we have studied the effects of shear force on the rupture of short double-stranded DNA at different temperatures. We show that the rupture force increases linearly with chain length and approaches the asymptotic value in accordance with the experiment. The qualitative nature of these curves remains almost the same for different temperatures but with a shift in the force. We observe three different regimes in the extension of covalent bonds (backbone) under shear force.
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Dorton BJ, Mulindwa J, Li MS, Chintu NT, Chibwesha CJ, Mbewe F, Frenkel LM, Stringer JSA, Chi BH. CD4+ cell count and risk for antiretroviral drug resistance among women using peripartum nevirapine for perinatal HIV prevention. BJOG 2011; 118:495-9. [PMID: 21199294 DOI: 10.1111/j.1471-0528.2010.02835.x] [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: 11/30/2022]
Abstract
OBJECTIVE To determine the association between the antenatal CD4(+) cell count and the development of viral drug resistance following the use of peripartum nevirapine (NVP) for perinatal HIV prevention. DESIGN Secondary analysis of data from a previously conducted randomised controlled trial. SETTING Lusaka, Zambia. POPULATION HIV-positive pregnant women. METHODS We analysed the data from a clinical trial of single-dose tenofovir/emtricitabine (TDF/FTC) to reduce viral drug resistance associated with peripartum NVP. The trial population was categorised according to antenatal CD4(+) cell count (200-350, 351-500 and >500 cells/μl). MAIN OUTCOME MEASURES The relative risk for acquiring drug resistance, determined by consensus sequencing and oligonucleotide ligation assay (OLA), was estimated using multivariable logistic regression. RESULTS Of the 397 study participants, 119 (30%) had a CD4(+) count of 200-350 cells/μl, 135 (34%) had a CD4(+) count of 351-500 cells/μl and 143 (36%) had a CD4(+) count of >500 cells/μl. Among women receiving no intervention, the risk for drug resistance appeared to increase as the CD4(+) cell count decreased. Participants with CD4(+) cell counts of 200-350 cells/μl randomised to the study arm had the lowest risk, suggesting a higher efficacy of the intervention within this stratum. These results were consistent at 2 and 6 weeks, regardless of how drug resistance was measured. CONCLUSIONS Women with CD4(+) cell counts of 200-350 cells/μl may be at increased risk for viral drug resistance following the use of peripartum NVP. Given the high prevalence of NVP resistance and the clear benefits of treatment, antiretroviral therapy should be initiated among pregnant women with CD4(+) cell counts of ≤350 cells/μl.
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Affiliation(s)
- B J Dorton
- Centre for Infectious Disease Research, Lusaka, Zambia.
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Zha FX, Li MS, Shao J, Yin WT, Zhou SM, Lu X, Guo QT, Ye ZH, Li TX, Ma HL, Zhang B, Shen XC. Femtosecond laser-drilling-induced HgCdTe photodiodes. Opt Lett 2010; 35:971-973. [PMID: 20364187 DOI: 10.1364/ol.35.000971] [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: 05/29/2023]
Abstract
Femtosecond-laser drilling may induce holes in HgCdTe with morphology similar to that induced by ion-milling in loophole technique. So-formed hole structures are proven to be pn junction diodes by the laser beam induced current characterization as well as the conductivity measurement. Transmission and photoluminescence spectral measurements on a n-type dominated hole-array structure give rise to different results from those of an ion-milled sample.
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Affiliation(s)
- F-X Zha
- Physics Department, Shanghai University, Shanghai 200444, China.
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Li MS, Luo YP, Su ZY. Heavy metal concentrations in soils and plant accumulation in a restored manganese mineland in Guangxi, South China. Environ Pollut 2007; 147:168-75. [PMID: 17014941 DOI: 10.1016/j.envpol.2006.08.006] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2006] [Revised: 08/02/2006] [Accepted: 08/02/2006] [Indexed: 05/05/2023]
Abstract
Heavy metal contamination of metal-mined soils is a widespread problem in China. In the restored (over 20 years) Lipu manganese mineland, 36 plant species from 22 families were found colonizing, some of which were planted agronomic ones. Heavy metal concentrations in tailings were very high. Minesoils were basically unpolluted, but soils in the remaining mining area and in the vicinity of tailings dumps were polluted by Cd and Mn. Measurements of metal contents in dominant plants showed they were close to those of other mineland plants. Plants tended to have a higher Cd accumulation (as reflected by Biological Accumulation Coefficient) from soil, but have a higher Mn translocation (as indicated by Biological Transfer Coefficient) to aboveground parts. The Chinese chestnut and sugarcane cultivated on the reclaimed mineland were not safe for human consumption, and this agricultural restoration pattern should be carefully reconsidered.
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Affiliation(s)
- M S Li
- School of Environment and Resources, Guangxi Normal University, 15 Yucai Road, Guilin 541004, China.
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Li MS. Ecological restoration of mineland with particular reference to the metalliferous mine wasteland in China: A review of research and practice. Sci Total Environ 2006; 357:38-53. [PMID: 15992864 DOI: 10.1016/j.scitotenv.2005.05.003] [Citation(s) in RCA: 133] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2005] [Accepted: 05/09/2005] [Indexed: 05/03/2023]
Abstract
Despite a principal contributor to the rapid economic growth, the mining industry in China produced a large amount of wasteland and caused water pollution and soil erosion as well as other environmental damages. In 2002, this industry generated 265.4 Mt tailings, 130.4 Mt gangue and 107.8 Mt smelting slags. The degraded land associated with mining is estimated to be 3.2 Mha by the end of 2004, deteriorating the land shortage of China. Restoration of mine wasteland began in late 1970s but the restoration process was sluggish. The overall restoration rate (the ratio of reclaimed land area to the total degraded land area) of mine wasteland was some 10-12% with a higher rate for coal mine spoils but a lower rate for metal-mined derelict land. From 1994 to 2004, 149 research papers were published about the restoration of China's mining wasteland, of which 70 were on metal-mined land and 61 on the non-metal-mined land. Although 37 institutions in China were involved in the restoration research, only a few remained active and productive. Metal-mined derelict land is often more metal toxic and deficient of macronutrients and is tougher for revegetation. Many substrate amelioration techniques were proposed and tolerant plant species were tested for use of reclamation of the metal-mined tailings. Five hyperaccumulator species have been reported in China for the potential use in phytoremediation. However, these accomplishments were all at laboratory or small-scale field demonstration stage and still far from the practical use in reality. To accelerate the restoration and utilization of mine wasteland, several recommendations are put forward in this review. Above these suggestions, the commitment and efficiency of the government at all levels are vital.
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Affiliation(s)
- M S Li
- Department of Resource and Environmental Sciences and Institute for Environmental Sciences and Engineering, Guangxi Normal University, Guilin 541004, PR China.
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Zou GH, Mei HW, Liu HY, Liu GL, Hu SP, Yu XQ, Li MS, Wu JH, Luo LJ. Grain yield responses to moisture regimes in a rice population: association among traits and genetic markers. Theor Appl Genet 2005; 112:106-13. [PMID: 16231161 DOI: 10.1007/s00122-005-0111-3] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/17/2005] [Accepted: 08/20/2005] [Indexed: 05/04/2023]
Abstract
Drought is a major constraint to rice (Oryza sativa L.) production in rainfed and poorly irrigated environments. Identifying genomic regions influencing the response of yield and its components to water deficits will aid our understanding of the genetic mechanism of drought tolerance (DT) of rice and the development of DT varieties. Grain yield (GY) and its components of a recombinant inbred population developed from a lowland rice and an upland rice were investigated under different water levels in 2003 and 2004 in a rainout DT screening facility. Correlation and path analysis indicated that spikelet fertility (SF) was particularly important for grain yield with direct effect (P=0.60) under drought stress, while spikelet number per panicle (SN) contributed the most to grain yield (P=0.41) under well-watered condition. A total of 32 quantitative trait loci (QTLs) for grain yield and its components were identified. The phenotypic variation explained by individual QTLs varied from 1.29% to 14.76%. Several main effect QTLs affecting SF, 1,000-grain weight (TGW), panicle number (PN), and SN were mapped to the same regions on chromosome 4 and 8. These QTLs were detected consistently across 2 years and under both water levels in this study. Several digenic interactions among yield components were also detected. The identification of genomic regions associated with GY and its components under stress will be useful to improve drought tolerance of rice by marker-aided approaches.
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Affiliation(s)
- G H Zou
- Huazhong Agricultural University, Wuhan 430070, China
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Roh JY, Li MS, Chang JH, Choi JY, Shim HJ, Shin SC, Boo KS, Je YH. Expression and characterization of a recombinant Cry1Ac crystal protein with enhanced green fluorescent protein in acrystalliferous Bacillus thuringiensis. Lett Appl Microbiol 2004; 38:393-9. [PMID: 15059210 DOI: 10.1111/j.1472-765x.2004.01505.x] [Citation(s) in RCA: 4] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIMS To investigate fusion expression between Bacillus thuringiensis crystal protein and a foreign protein, the expression of a fusion protein comprised of Cry1Ac, and enhanced green fluorescent protein (EGFP) in B. thuringiensis Cry(-)B strain was examined. METHODS AND RESULTS The N-terminal fusion expression of EGFP in Cry1Ac was attempted under the control of the native cry1Ac promoter. The EGFP gene was cloned into pProMu and named pProMu-EGFP. The transformant, ProMu-EGFP/CB produced parasporal inclusions that were of bipyramidal-shaped crystals in size ranging from 200 to 300 nm. The fusion protein was approximately 150 kDa and identified by the immunoblot analysis using a Cry1Ac antibody and also a GFP antibody. The LC(50) of the ProMu-EGFP/CB was twofold higher when compared with that by the ProAc/CB. However, the crystal protein produced by the ProMu-EGFP/CB was effective on Plutella xylostella larvae. CONCLUSIONS The ProMu-EGFP/CB produced bipyramidal shaped and insecticidal crystals comprising fusion proteins. SIGNIFICANCE AND IMPACT OF THE STUDY Through the N-terminal fusion expression of EGFP and Cry1Ac, expression and crystallization between the B. thuringiensis crystal protein and a foreign protein were validated.
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Affiliation(s)
- J Y Roh
- School of Agricultural Biotechnology, Seoul National University, Seoul, Korea
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Li MS, Je YH, Lee IH, Chang JH, Roh JY, Kim HS, Oh HW, Boo KS. Isolation and characterization of a strain of Bacillus thuringiensis ssp. kurstaki containing a new delta-endotoxin gene. Curr Microbiol 2002; 45:299-302. [PMID: 12192530 DOI: 10.1007/s00284-002-3755-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
A strain of Bacillus thuringiensis that showed significantly high toxicity to Plutella xylostella and Spodoptera exigua was isolated from a Korean soil sample and characterized. The isolate, named B. thuringiensis K1, was determined to belong to ssp. kurstaki (H3a3b3c) type by an H antisera agglutination test and produced bipyramidal inclusions. Plasmid pattern of K1 was different from that of the reference strain, ssp. kurstaki HD-1, but the parasporal inclusion protein profile of K1 had two major bands that were similar in size to those of ssp. kurstaki HD-1. To verify the delta-endotoxin gene types of K1, PCR analysis with specific cry gene primers was performed to show that K1 contained a new cry gene in addition to cry1Aa, cry1Ab, cry1Ac, cry1E and cry2 genes. PCR-amplified region of the new cry gene, cryX, showed 79% similarity to cry1Fa1 gene (GenBank Accession No. M63897). In an insect toxicity assay, K1 had higher toxicity against Plutella xylostella and S. exigua than ssp. kurstaki HD-1.
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Affiliation(s)
- M S Li
- School of Agricultural Biotechnology, Seoul National University, 103 Seodoon-Dong, Suwon 441-744, Korea
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Kim HS, Li MS. Molecular cloning of a new crystal protein gene cry1Af1 of Bacillus thuringiensis NT0423 from Korean sericultural farms. Curr Microbiol 2001; 43:408-13. [PMID: 11685507 DOI: 10.1007/s002840010329] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [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: 02/20/2001] [Accepted: 04/17/2001] [Indexed: 11/30/2022]
Abstract
A new cry1Ab-type gene encoding the 130 kDa protein of Bacillus thuringiensis NT0423 bipyramidal crystals was cloned, sequenced, and expressed in a crystal-negative B. thuringiensis host. Hybridization experiments revealed that the crystal protein gene is located on a 44 MDa plasmid of B. thuringiensis NT0423. A strong positive signal detected on the 6.6 kb HindIII fragment from B. thuringiensis NT0423 plasmid DNA was cloned and sequenced. The cry1Ab-type gene, designated cry1Af1, consisted of open reading frame of 3453 bp, encoding a protein of 1151 amino acid residues. The polypeptide has the deduced amino acid sequences predicting molecular masses of 130,215 Da. With both Bt I and Br II promoter sequences were found, the B. thuringiensis NT0423 crystal protein gene promoter closely aligned with those of cry1A-type crystal protein gene. When compared with known sequences of other Cry and Cyt proteins, the Cry1Af1 protein showed maximum 93% sequence identity to Cry1Ab protein of B. thuringiensis subsp. kurstaki. The expressed Cry1Af1 protein in a crystal-negative B. thuringiensis host appears to have strong insecticidal activity against lepidopteran larvae (Plutella xylostella). Crystals containing Cry1Af1 were about six times more toxic than the wild-type crystals of B. thuringiensis NT0423.
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Affiliation(s)
- H S Kim
- Laboratory of Insect Pathology & Genetic Engineering, Division of Applied Biology and Chemistry, College of Agriculture & Life Sciences, Seoul National University, Seodun-dong 103, Kweonsun-gu, Suwon 441-744, Kyonggi-do, Korea.
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41
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Abstract
Inactivation of dsbA (disulfide bond formation), either by an insertion (Sh4, dsbA::kan) or by alteration of the active site (Sh42, dsbA33G), renders Shigella flexneri avirulent. However, Sh4 and Sh42 behave differently in many ways in vitro and in vivo. A gene of unknown function, yihE, up-stream and cotranscribed with dsbA, is thought to differentiate Sh4 and Sh42 as the kan insertion may result in a truncated unstable yihE-dsbA mRNA in Sh4. To gain insight into the function of yihE, DNA array hybridization was performed to study the genomic expression in Sh4, Sh42, and a newly constructed yihE mutant (Sh54). Compared to the wild-type, M90TS, Sh4, and Sh54 demonstrated significantly changed transcription levels of about 100 genes, of which many involved in energy metabolism and stress response were down- and up-regulated, respectively. In contrast, Sh42 showed altered transcription levels of only 20 genes. The results argue that yihE is principally responsible for the changed genomic expression in Sh4 and Sh54. Given the fact that the transcription of yihE-dsbA is regulated by the CpxRA two-component signal transduction system, yihE is probably involved in the extracytoplasmic stress response in a manor deserving further studies.
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Affiliation(s)
- M S Li
- Molecular Infectious Diseases Group, Department of Paediatrics, Faculty of Medicine, Imperial College St. Mary's Campus, Norfolk Place, London W2 1PG, United Kingdom
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42
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Ye F, Li MS, Taylor JD, Nguyen Q, Colton HM, Casey WM, Wagner M, Weiner MP, Chen J. Fluorescent microsphere-based readout technology for multiplexed human single nucleotide polymorphism analysis and bacterial identification. Hum Mutat 2001; 17:305-16. [PMID: 11295829 DOI: 10.1002/humu.28] [Citation(s) in RCA: 112] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Large-scale human genotyping requires technologies with a minimal number of steps, high accuracy, and the ability to automate at a reasonable cost. In this regard, we have developed a rapid, cost-effective readout method for single nucleotide polymorphism (SNP) genotyping that combines an easily automatable single-tube allele-specific primer extension (ASPE) with an efficient high throughput flow cytometric analysis performed on a Luminex 100 flow cytometer. This robust technique employs an ASPE reaction using PCR-derived target DNA containing the SNP and a pair of synthetic complementary capture probes that differ at their 3' end-nucleotide defining the alleles. Each capture probe has been synthesized to contain a unique 25-nucleotide identifying sequence (ZipCode) at its 5' end. An array of fluorescent microspheres, covalently coupled with complementary ZipCode sequences (cZipCodes), was hybridized to biotin-labeled ASPE reaction products, sequestering them for flow cytometric analysis. ASPE offers both an advantage of streamlining the SNP analysis protocol and an ability to perform multiplex SNP analysis on any mixture of allelic variants. All steps of the assay are simple additions of the solutions, incubations, and washes. This technique was used to assay 15 multiplexed SNPs on human chromosome 12 from 96 patients. Comparison of the microsphere-based ASPE assay results to gel-based oligonucleotide ligation assay (OLA) results showed 99.2% agreement in genotype assignments. In addition, the microsphere-based multiplex SNPs assay system was adapted for the identification of bacterial samples by both ASPE and single base chain extension (SBCE) assays. A series of probes designed for different variable sites of bacterial 16S rDNA permitted multiplex analysis and generated species- or genus-specific patterns. Seventeen bacterial species representing a broad range of gram-negative and gram-positive bacteria were analyzed within 16 variable sites of 16S rDNA sequence. The results were consistent with the published sequences and confirmed by direct DNA sequencing.
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Affiliation(s)
- F Ye
- Department of Genomic Sciences, Glaxo Wellcome Research and Development, Research Triangle Park, North Carolina 27709-3398, USA
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Taylor JD, Briley D, Nguyen Q, Long K, Iannone MA, Li MS, Ye F, Afshari A, Lai E, Wagner M, Chen J, Weiner MP. Flow cytometric platform for high-throughput single nucleotide polymorphism analysis. Biotechniques 2001; 30:661-6, 668-9. [PMID: 11252801 DOI: 10.2144/01303dd04] [Citation(s) in RCA: 144] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
We have developed a rapid, cost-effective, high-throughput readout for single nucleotide polymorphism (SNP) genotyping using flow cytometric analysis performed on a Luminex 100 flow cytometer. This robust technique employs a PCR-derived target DNA containing the SNP, a synthetic SNP-complementary ZipCode-bearing capture probe, a fluorescent reporter molecule, and a thermophilic DNA polymerase. An array of fluorescent microspheres, covalently coupled with complementary ZipCode sequences (cZipCodes), was hybridized to the reaction products and sequestered them for flow cytometric analysis. The single base chain extension (SBCE) reaction was used to assay 20 multiplexed SNPs for 633 patients in 96-well format. Comparison of the microsphere-based SBCE assay results to gel-based oligonucleotide ligation assay (OLA) results showed 99.3% agreement in genotype assignments. Substitution of direct-labeled R6G dideoxynucleotide with indirect-labeled phycoerythrin dideoxynucleotide enhanced signal five- to tenfold while maintaining low noise levels. A new assay based on allele-specific primer extension (ASPE) was validated on a set of 15 multiplexed SNPs for 96 patients. ASPE offers both the advantage of streamlining the SNP analysis protocol and the ability to perform multiplex SNP analysis on any mixture of allelic variants.
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Affiliation(s)
- J D Taylor
- Glaxo Wellcome Research and Development, Research Triangle Park, NC, USA.
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44
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Li MS, Nordblad P, Kawamura H. Aging effect in ceramic superconductors. Phys Rev Lett 2001; 86:1339-1342. [PMID: 11178078 DOI: 10.1103/physrevlett.86.1339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2000] [Indexed: 05/23/2023]
Abstract
A three-dimensional lattice of the Josephson junctions with a finite self-conductance is employed to model ceramic superconductors. By using Monte Carlo simulations it is shown that the aging disappears in the strong screening limit. In the weak screening regime, aging is present even at low temperatures. For intermediate values of the self-inductance, aging occurs in an intermediate temperature interval but is suppressed entirely at high and low temperatures. Our results are in good agreement with experiments.
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Affiliation(s)
- M S Li
- Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668 Warsaw, Poland
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Li MS, Cieplak M, Sushko N. Dynamical chaos and power spectra in toy models of heteropolymers and proteins. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 2000; 62:4025-4031. [PMID: 11088925 DOI: 10.1103/physreve.62.4025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2000] [Indexed: 05/23/2023]
Abstract
The dynamical chaos in Lennard-Jones toy models of heteropolymers is studied by molecular dynamics simulations. It is shown that two nearby trajectories quickly diverge from each other if the heteropolymer corresponds to a random sequence. For good folders, on the other hand, two nearby trajectories may initially move apart but eventually they come together. Thus good folders are intrinsically nonchaotic. A choice of a distance of the initial conformation from the native state affects the way in which a separation between the twin trajectories behaves in time. This observation allows one to determine the size of a folding funnel in good folders. We study the energy landscapes of the toy models by determining the power spectra and fractal characteristics of the dependence of the potential energy on time. For good folders, folding and unfolding trajectories have distinctly different correlated behaviors at low frequencies.
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Affiliation(s)
- M S Li
- Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, 02-668 Warsaw, Poland
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46
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Chen J, Iannone MA, Li MS, Taylor JD, Rivers P, Nelsen AJ, Slentz-Kesler KA, Roses A, Weiner MP. A microsphere-based assay for multiplexed single nucleotide polymorphism analysis using single base chain extension. Genome Res 2000; 10:549-57. [PMID: 10779497 PMCID: PMC310857 DOI: 10.1101/gr.10.4.549] [Citation(s) in RCA: 176] [Impact Index Per Article: 7.3] [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] [Received: 10/12/1999] [Accepted: 02/10/2000] [Indexed: 01/08/2023]
Abstract
A rapid, high throughput readout for single-nucleotide polymorphism (SNP) analysis was developed employing single base chain extension and cytometric analysis of an array of fluorescent microspheres. An array of fluorescent microspheres was coupled with uniquely identifying sequences, termed complementary ZipCodes (cZipCodes), which allowed for multiplexing possibilities. For a given assay, querying a polymorphic base involved extending an oligonucleotide containing both a ZipCode and a SNP-specific sequence with a DNA polymerase and a pair of fluoresceinated dideoxynucleotides. To capture the reaction products for analysis, the ZipCode portion of the oligonucleotide was hybridized with its cZipCodes on the microsphere. Flow cytometry was used for microsphere decoding and SNP typing by detecting the fluorescein label captured on the microspheres. In addition to multiplexing capability, the ZipCode system allows multiple sets of SNPs to be analyzed by a limited set of cZipCode-attached microspheres. A standard set of non-cross reactive ZipCodes was established experimentally and the accuracy of the system was validated by comparison with genotypes determined by other technologies. From a total of 58 SNPs, 55 SNPs were successfully analyzed in the first pass using this assay format and all 181 genotypes across the 55 SNPs were correct. These data demonstrate that the microsphere-based single base chain extension (SBCE) method is a sensitive and reliable assay. It can be readily adapted to an automated, high-throughput genotyping system. [Primer sequences used in this study are available as online supplementary materials at www.genome.org.]
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Affiliation(s)
- J Chen
- Department of Genomic Sciences, Glaxo Wellcome Research and Development, Research Triangle Park, North Carolina 27709-3398, USA.
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47
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Iannone MA, Taylor JD, Chen J, Li MS, Rivers P, Slentz-Kesler KA, Weiner MP. Multiplexed single nucleotide polymorphism genotyping by oligonucleotide ligation and flow cytometry. Cytometry 2000. [PMID: 10679731 DOI: 10.1002/(sici)1097-0320(20000201)39:2<131::aid-cyto6>3.0.co;2-u] [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: 11/10/2022]
Abstract
BACKGROUND We have developed a rapid, high throughput method for single nucleotide polymorphism (SNP) genotyping that employs an oligonucleotide ligation assay (OLA) and flow cytometric analysis of fluorescent microspheres. METHODS A fluoresceinated oligonucleotide reporter sequence is added to a "capture" probe by OLA. Capture probes are designed to hybridize both to genomic "targets" amplified by polymerase chain reaction and to a separate complementary DNA sequence that has been coupled to a microsphere. These sequences on the capture probes are called "ZipCodes". The OLA-modified capture probes are hybridized to ZipCode complement-coupled microspheres. The use of microspheres with different ratios of red and orange fluorescence makes a multiplexed format possible where many SNPs may be analyzed in a single tube. Flow cytometric analysis of the microspheres simultaneously identifies both the microsphere type and the fluorescent green signal associated with the SNP genotype. RESULTS Application of this methodology is demonstrated by the multiplexed genotyping of seven CEPH DNA samples for nine SNP markers located near the ApoE locus on chromosome 19. The microsphere-based SNP analysis agreed with genotyping by sequencing in all cases. CONCLUSIONS Multiplexed SNP genotyping by OLA with flow cytometric analysis of fluorescent microspheres is an accurate and rapid method for the analysis of SNPs.
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Affiliation(s)
- M A Iannone
- Department of Molecular Sciences, Glaxo Wellcome Research Laboratories, Research Triangle Park, NC 27709-3398, USA.
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Zal B, Pinto-Basto J, Milne R, Li MS, Jeeachee M, Baboonian C. Immunological analysis of the tegument phosphoprotein ppUL83 of human cytomegalovirus. J Virol Methods 2000; 85:183-92. [PMID: 10716351 DOI: 10.1016/s0166-0934(99)00168-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Immunological properties of the tegument phosphoprotein, ppUL83, of human cytomegalovirus (HCMV), expressed using a replication deficient recombinant adenovirus vector (RAd83) are described. The initial characterisation of this protein was carried out by immunofluorescence (IF), immunoprecipitation (RIP) and immunoblotting using nine mouse monoclonal antibodies (Mabs) directed against five linear and four conformational epitopes of ppUL83. The reactivity of the recombinant protein with the Mabs was similar to that observed with native ppUL83, although, the kinetics of its expression was in agreement with expression derived from the HCMV major immediate early promoter (MIEP). The recombinant antigen was used successfully in an Enzyme Immunoassay (EIA) for the detection of IgG class antibodies in 171 sequential sera taken from 21 heart transplant recipients. Comparison of HCMV-infected and RAd83-infected cell extracts in this experiment showed that recombinant antigen could substitute whole virus extracts as a single well-characterised protein in EIA. Serum IgG avidity measurements, using the recombinant ppUL83, differentiated between primary and past HCMV infections in the population studied.
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Affiliation(s)
- B Zal
- Department of Cardiological Sciences, St George's Hospital Medical School, London, UK
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Cheng AF, Tai VH, Li MS, Chan CH, Wong CF, Yew WW, Hui M, Chan CY, Lee JC. Improved recovery of Mycobacterium tuberculosis from pleural aspirates: bedside inoculation, heparinized containers and liquid culture media. Scand J Infect Dis 1999; 31:485-7. [PMID: 10576128 DOI: 10.1080/00365549950164012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
The effects of bedside inoculation, heparinized containers and liquid culture media on the recovery of Mycobacterium tuberculosis from pleural aspirates were evaluated in this study. Of 155 patients, 63 were diagnosed to have pleural effusion tuberculous in origin. The overall recovery of M. tuberculosis was 57.1%. Bedside inoculation of the specimens produced a significantly higher yield than laboratory inoculation using non-heparinized specimens. When the pleural aspirates were transported in heparinized containers, the recovery rate was comparable to that from bedside inoculation, but lower when non-heparinized containers were used. No significant difference was found in recovery rate between the two liquid media, but the rate was significantly higher with the use of liquid media than conventional solid media. Thus, bedside inoculation of pleural aspirates, use of heparinized containers for transport for delayed inoculation in the laboratory and use of liquid culture media are recommended.
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Affiliation(s)
- A F Cheng
- Department of Microbiology, Prince of Wales Hospital, The Chinese University of Hong Kong
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50
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Takezaki T, Gao CM, Ding JH, Liu TK, Li MS, Tajima K. Comparative study of lifestyles of residents in high and low risk areas for gastric cancer in Jiangsu Province, China; with special reference to allium vegetables. J Epidemiol 1999; 9:297-305. [PMID: 10616262 DOI: 10.2188/jea.9.297] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
There is a low risk area for gastric cancer in Jiangsu Province, China, where people frequently consume raw allium vegetables. As a first step epidemiological study to clarify the factors involved in the low incidence of gastric cancer, we conducted a comparative study of the ecological factors in a high risk area (HRA), Yangzhong, and a low risk area (LRA), Pizhou, using a questionnaire. Subjects were selected from the general population according to age and sex, and comprised 414 residents of the HRA and 425 residents of the LRA. Ecological factors were compared for the two areas by Cochran-Mantel-Haenszel method, age-adjusted. Smoking and drinking habits were found to be more common in the LRA. On the other hand, allium vegetables were consumed in the LRA much more frequently, with high consumption of raw vegetables fruit, tomatoes, kidney beans and soybean products. People who consumed garlic en masse 3 times or more per week were 82% of men and 75% of women in the LRA, and 1% of men and women in the HRA. The results of the survey suggest that frequent consumption of allium vegetables, in addition to other anticancer foods, may be a factor in low mortality for gastric cancer.
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Affiliation(s)
- T Takezaki
- Division of Epidemiology, Aichi Cancer Center Research Institute, Nagoya, Japan
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