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Xie YL, Han F, Jin YH, Ding YB, Guo J, Ji DX, Zhang T, Chen XM, Shang HC. Organic Integration of Traditional Chinese and Western Medicines-Future of Clinical Practice Guidelines of Integrated Traditional Chinese and Western Medicines. Chin J Integr Med 2024; 30:359-365. [PMID: 37528326 DOI: 10.1007/s11655-023-3739-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/01/2023] [Indexed: 08/03/2023]
Abstract
The transformation and implementation of clinical practice guidelines for integrated traditional Chinese medicine (TCM) and Western medicine (WM) is crucial to the adoption of medical science and technological findings and is an important way for TCM to be made available to the world. First, clinical practice guidelines (CPGs) of TCM and WM integration in recent years was analyzed to clarify the current situation and problems in the existing guidelines according to the following four perspectives: (1) perspective of TCM and WM integration in guidelines, (2) diagnosis Using integrated TCM and WM, (3) integration of TCM and WM treatment, (4) promoting TCM and WM integration. Secondly, the information and quality evaluation of CPGs for integrated Chinese and Western medicine in 2020-2022 were analyzed to explore the degree and methods of integration of Chinese and Western medicine guidelines. And last this study aimed to lay a foundation for the further establishment of Chinese characteristic, repeatable, and calculable clinical practice guidelines of TCM and WM integration.
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Affiliation(s)
- Ying-Lan Xie
- Department of Traditional Chinese Medicine Encephalopathy, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, 430074, China
- Department of Traditional Chinese Medicine Encephalopathy, Hubei Province Traditional Chinese Medicine Research Institute, Wuhan, 430074, China
| | - Fei Han
- Xuanwu Hospital of Traditional Chinese Medicine, Beijing, 100000, China
| | - Ying-Hui Jin
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, 430074, China
| | - Yan-Bing Ding
- Department of Traditional Chinese Medicine Encephalopathy, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, 430074, China
- Department of Traditional Chinese Medicine Encephalopathy, Hubei Province Traditional Chinese Medicine Research Institute, Wuhan, 430074, China
| | - Jing Guo
- College of Acupuncture and Massage, College of Health and Rehabilitation, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Dong-Xiao Ji
- Department of Ophthalmology, Huaihe Hospital of Henan University, Kaifeng, Henan Province, 475000, China
| | - Teng Zhang
- Department of Traditional Chinese Medicine Encephalopathy, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, 430074, China
- Department of Traditional Chinese Medicine Encephalopathy, Hubei Province Traditional Chinese Medicine Research Institute, Wuhan, 430074, China
| | - Xiao-Min Chen
- Department of Traditional Chinese Medicine Encephalopathy, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, 430074, China
- Department of Traditional Chinese Medicine Encephalopathy, Hubei Province Traditional Chinese Medicine Research Institute, Wuhan, 430074, China
| | - Hong-Cai Shang
- Ministry of Education and Beijing Key Laboratory of Internal Medicine of Traditional Chinese Medicine, Dongzhimen Hospital of Beijing University of Traditional Chinese Medicine/Ministry of Education and Beijing Key Laboratory of Internal Medicine of Traditional Chinese Medicine, Beijing, 100700, China.
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Wei XZ, Gao K, Zhang J, Zhao B, Liu ZG, Wu RQ, Ou MM, Zhang Q, Li W, Cheng Q, Xie YL, Zhang TY, Li YJ, Wang H, Wang ZM, Zhang W, Zhou J. [Effect of preemptive analgesia with ibuprofen on postoperative pain after mandibular third molar extraction: a randomized controlled trial]. Zhonghua Kou Qiang Yi Xue Za Zhi 2024; 59:230-236. [PMID: 38432654 DOI: 10.3760/cma.j.cn112144-20231203-00276] [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: 03/05/2024]
Abstract
Objective: To evaluate the impact of preemptive analgesia with ibuprofen on postoperative pain following the extraction of impacted mandibular third molars in a Chinese population, aiming to provide a clinical reference for its application. Methods: This multicenter, randomized, double-blind, placebo-controlled parallel-group trial was conducted from April 2022 to October 2023 at the Capital Medical University School of Stomatology (40 cases), Beijing TianTan Hospital, Capital Medical University (22 cases), and Beijing Chao-Yang Hospital, Capital Medical University (20 cases). It included 82 patients with impacted mandibular third molars, with 41 in the ibuprofen group and 41 in the control group. Participants in the ibuprofen group received 300 mg of sustained-release ibuprofen capsules orally 15 min before surgery, while the control group received a placebo. Both groups were instructed to take sustained-release ibuprofen capsules as planned for 3 days post-surgery. Pain intensity was measured using the numerical rating scale at 30 min, 4 h, 6 h, 8 h, 24 h, 48 h, and 72 h after surgery, and the use of additional analgesic medication was recorded during days 4 to 6 postoperatively. Results: All 82 patients completed the study according to the protocol. No adverse events such as nausea, vomiting, or allergies were reported in either group during the trial. The ibuprofen group exhibited significantly lower pain scores at 4 h [2.0 (1.0, 4.0) vs. 4.0 (3.0, 5.0)] (Z=-3.73, P<0.001), 6 h [2.0 (1.0, 4.0) vs. 5.0(2.5, 6.0)] (Z=-3.38, P<0.001), and 8 h [2.0 (1.0, 4.0) vs. 5.0 (2.0, 6.0)] (Z=-2.11, P=0.035) postoperatively compared to the control group. There were no statistically significant differences in pain scores between the groups at 30 min, 24 h, 48 h, and 72 h postoperatively (P>0.05). Additionally, 11 out of 41 patients (26.8%) in the ibuprofen group and 23 out of 41 patients (56.1%) in the control group required extra analgesic medication between days 4 and 6 post-surgery, with the ibuprofen group taking significantly fewer additional pills [0.0 (0.0, 1.0) vs. 1.0 (0.0, 3.0)] (Z=-2.81, P=0.005). Conclusions: A pain management regimen involving 300 mg of oral sustained-release ibuprofen capsules administered 15 minutes before surgery and continued for 3 d postoperatively effectively reduces pain levels and the total amount of analgesic medication used after the extraction of impacted mandibular third molars. Considering its efficacy, safety, and cost-effectiveness, ibuprofen is recommended as a first-line drug for perioperative pain management, enhancing patient comfort during diagnosis and treatment in a feasible manner.
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Affiliation(s)
- X Z Wei
- Department of Emergency and General Dentistry, Capital Medical University School of Stomatology, Beijing 100050, China
| | - K Gao
- Department of VIP Dental Service, Capital Medical University School of Stomatology, Beijing 100050, China
| | - J Zhang
- Department of Oral Maxillofacial Surgery, Capital Medical University School of Stomatology, Beijing 100050, China
| | - B Zhao
- Department of Pharmacy, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Z G Liu
- Statistics Department, Pharmacology Base, Beijing Anzhen Hospital, Capital Medical University, Beijing 100011, China
| | - R Q Wu
- Department of Stomatology, Beijing TianTan Hospital, Capital Medical University, Beijing 100070, China
| | - M M Ou
- Department of Stomatology, Beijing TianTan Hospital, Capital Medical University, Beijing 100070, China
| | - Q Zhang
- Department of Stomatology, Beijing TianTan Hospital, Capital Medical University, Beijing 100070, China
| | - W Li
- Department of Stomatology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - Q Cheng
- Department of Stomatology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - Y L Xie
- Department of Stomatology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - T Y Zhang
- Department of VIP Dental Service, Capital Medical University School of Stomatology, Beijing 100050, China
| | - Y J Li
- Department of VIP Dental Service, Capital Medical University School of Stomatology, Beijing 100050, China
| | - H Wang
- Department of Stomatology, Beijing TianTan Hospital, Capital Medical University, Beijing 100070, China
| | - Z M Wang
- Department of Stomatology, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - W Zhang
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology & National Center for Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - J Zhou
- Department of VIP Dental Service, Capital Medical University School of Stomatology, Beijing 100050, China
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Rao PS, Reed K, Modi N, Handler D, de Guex KP, Yu S, Kagan L, Reiss R, Narayanan N, Peloquin CA, Lardizabal A, Vinnard C, Thomas TA, Xie YL, Heysell SK. Isoniazid urine spectrophotometry for prediction of serum pharmacokinetics in adults with TB. IJTLD Open 2024; 1:90-95. [PMID: 38655375 PMCID: PMC11037464 DOI: 10.5588/ijtldopen.23.0361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 04/26/2024]
Abstract
BACKGROUND Isoniazid (INH) is an important drug in many TB regimens, and unfavorable treatment outcomes can be caused by suboptimal pharmacokinetics. Dose adjustment can be personalized by measuring peak serum concentrations; however, the process involves cold-chain preservation and laboratory techniques such as liquid chromatography (LC)/mass spectrometry (MS), which are unavailable in many high-burden settings. Urine spectrophotometry could provide a low-cost alternative with simple sampling and quantification methods. METHODS We enrolled 56 adult patients on treatment for active TB. Serum was collected at 0, 1, 2, 4, 6, and 8 h for measurement of INH concentrations using validated LC-MS/MS methods. Urine was collected at 0-4, 4-8, and 8-24 h intervals, with INH concentrations measured using colorimetric methods. RESULTS The median peak serum concentration and total serum exposure over 24 h were 4.8 mg/L and 16.4 mg*hour/L, respectively. Area under the receiver operator characteristic curves for urine values predicting a subtherapeutic serum concentration (peak <3.0 mg/L) were as follows: 0-4 h interval (AUC 0.85, 95% CI 0.7-0.96), 0-8 h interval (AUC 0.85, 95% CI 0.71-0.96), and 0-24 h urine collection interval (AUC 0.84, 95% CI 0.68-0.96). CONCLUSION Urine spectrophotometry may improve feasibility of personalized dosing in high TB burden regions but requires further study of target attainment following dose adjustment based on a urine threshold.
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Affiliation(s)
- P S Rao
- Division of Infectious Diseases and International Health, University of Virginia, Charlottesville, VA
| | - K Reed
- School of Arts and Sciences, University of Virginia, Charlottesville, VA
| | - N Modi
- Public Health Research Institute and Global Tuberculosis Institute, Rutgers New Jersey Medical School, Newark, NJ
| | - D Handler
- Public Health Research Institute and Global Tuberculosis Institute, Rutgers New Jersey Medical School, Newark, NJ
| | - K Petros de Guex
- Division of Infectious Diseases and International Health, University of Virginia, Charlottesville, VA
| | - S Yu
- Department of Pharmaceutics and Center of Excellence for Pharmaceutical Translational Research and Education, Ernest Mario School of Pharmacy, Rutgers State University of New Jersey, Newark, NJ
| | - L Kagan
- Department of Pharmaceutics and Center of Excellence for Pharmaceutical Translational Research and Education, Ernest Mario School of Pharmacy, Rutgers State University of New Jersey, Newark, NJ
| | - R Reiss
- Public Health Research Institute and Global Tuberculosis Institute, Rutgers New Jersey Medical School, Newark, NJ
| | - N Narayanan
- Department of Pharmaceutics and Center of Excellence for Pharmaceutical Translational Research and Education, Ernest Mario School of Pharmacy, Rutgers State University of New Jersey, Newark, NJ
| | - C A Peloquin
- College of Pharmacy and Emerging Pathogens Institute, University of Florida, Gainesville, FL, USA
| | - A Lardizabal
- Public Health Research Institute and Global Tuberculosis Institute, Rutgers New Jersey Medical School, Newark, NJ
| | - C Vinnard
- Public Health Research Institute and Global Tuberculosis Institute, Rutgers New Jersey Medical School, Newark, NJ
| | - T A Thomas
- Division of Infectious Diseases and International Health, University of Virginia, Charlottesville, VA
| | - Y L Xie
- Public Health Research Institute and Global Tuberculosis Institute, Rutgers New Jersey Medical School, Newark, NJ
| | - S K Heysell
- Division of Infectious Diseases and International Health, University of Virginia, Charlottesville, VA
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Liang XY, Zhou QG, Wang LY, Wang SL, Xie YL, Yang X, He JY, Zhang ZY, Wang MC, He SX, Zhang YQ, Chen TL, Wu XH, Wang TT, Lin HJ, Chen XX, He N. [Prevalence of frailty and related factors in middle-aged and elderly people in island and mountainous areas of Taizhou, Zhejiang Province]. Zhonghua Liu Xing Bing Xue Za Zhi 2024; 45:139-147. [PMID: 38228537 DOI: 10.3760/cma.j.cn112338-20230720-00026] [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 compare the prevalence of frailty and related factors in middle-aged and elderly people aged ≥45 years in island and mountainous areas of Taizhou, Zhejiang Province. Methods: Based on cross-sectional design, stratified cluster sampling and quota sampling methods were adopted. One administrative district was randomly selected from each of six coastal and three inland administrative districts in Taizhou during July to August, representing two different geographical terrains. In the island area (Jiaojiang District), all residents aged ≥45 years were included by cluster sampling. In the mountainous area (Xianju County), participants were selected through quota sampling, with same gender and age distributions. Data about their demographic characteristics, lifestyle and health-related factors were collected through questionnaire surveys and laboratory examinations. The prevalence of frailty was assessed using the Fried frailty phenotype scale. Hierarchical analysis and multivariate logistic regression analysis were used to compare the influencing factors of frailty. Results: A total of 1 011 local residents were studied, in whom island and mountainous residents accounted for 48.1% (486/1 011) and 51.9% (525/1 011) respectively; men and women accounted for 45.9% (464/1 011) and 54.1% (547/1 011) respectively. Middle-aged (45-49 years), younger elderly (60-74 years), and older elderly (≥75 years) residents accounted for 38.6% (390/1 011), 44.6% (451/1 011), and 16.8% (170/1 011) respectively. The overall prevalence rate of frailty was 3.6% (36/1 011), the prevalence rate was 3.7% (17/464) in men and 3.5% (19/547) in women. The prevalence rates in age groups 45-59,60-74 years and ≥75 years were 0.3% (1/390), 2.2% (10/451), and 14.7% (25/170), respectively. The prevalence rates of frailty and pre-frailty in island area were 6.0% (29/486) and 39.1% (190/486), respectively, which was higher than those in mountainous area (1.3%, 7/525) and (30.9%, 162/525). After adjusting for potential confounding factors, the risk for frailty in island residents was significantly higher than that in mountainous residents (aOR=1.55,95%CI: 1.07-2.25,P=0.019). In island area, older age (60-74 years:aOR=2.52,95%CI: 1.56-4.13; ≥75 years:aOR=11.65,95%CI:5.38-26.70), being women (aOR=1.94,95%CI: 1.20-3.17), suffering from depression (aOR=1.09,95%CI:1.02-1.17) were associated with frailty symptoms. In mountainous area, older age was also associated with an increased risk of frailty symptoms, but the OR value was lower than those in island area (60-74 years: aOR=1.74,95%CI:1.04-2.94;≥75 years: aOR=4.78,95%CI:2.45-9.50). Polydrug use (aOR=2.08,95%CI: 1.14-3.80) and suffering from depression (aOR=1.10,95%CI: 1.02-1.18) had significant positive association with frailty symptoms. Higher education level had significant negative association with frailty symptoms (junior high school: aOR=0.40,95%CI: 0.21-0.75; senior high school and technical secondary school: aOR=0.29,95%CI: 0.15-0.53; college or above:aOR=0.22,95%CI: 0.11-0.42). Conclusions: The prevalence of frailty in middle-aged and elderly community residents was significantly higher in island area than in mountainous area in Taizhou. The frailty-related factors varied with area. The elderly people (≥75 years) and women in island area had higher risk for frailty. Older age and suffering from depression were the independent risk factors for frailty. It is necessary to pay attention to the health risk factors and special environment in island area, and take comprehensive intervention measures to delay the process of debilitation and improve the quality of life of middle-aged and elderly people.
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Affiliation(s)
- X Y Liang
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai 200032, China Yiwu Research Institute Fudan University, Yiwu 322000, China
| | - Q G Zhou
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai 200032, China Yiwu Research Institute Fudan University, Yiwu 322000, China
| | - L Y Wang
- Taizhou Prefectural Center for Disease Control and Prevention of Zhejiang Province, Taizhou 318000, China
| | - S L Wang
- Taizhou Prefectural Center for Disease Control and Prevention of Zhejiang Province, Taizhou 318000, China
| | - Y L Xie
- Taizhou Prefectural Center for Disease Control and Prevention of Zhejiang Province, Taizhou 318000, China
| | - X Yang
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai 200032, China Yiwu Research Institute Fudan University, Yiwu 322000, China
| | - J Y He
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai 200032, China Yiwu Research Institute Fudan University, Yiwu 322000, China
| | - Z Y Zhang
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai 200032, China Yiwu Research Institute Fudan University, Yiwu 322000, China
| | - M C Wang
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai 200032, China Yiwu Research Institute Fudan University, Yiwu 322000, China
| | - S X He
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai 200032, China Yiwu Research Institute Fudan University, Yiwu 322000, China
| | - Y Q Zhang
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai 200032, China Yiwu Research Institute Fudan University, Yiwu 322000, China
| | - T L Chen
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai 200032, China Yiwu Research Institute Fudan University, Yiwu 322000, China
| | - X H Wu
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai 200032, China Yiwu Research Institute Fudan University, Yiwu 322000, China
| | - T T Wang
- Taizhou Prefectural Center for Disease Control and Prevention of Zhejiang Province, Taizhou 318000, China
| | - H J Lin
- Taizhou Prefectural Center for Disease Control and Prevention of Zhejiang Province, Taizhou 318000, China
| | - X X Chen
- Taizhou Prefectural Center for Disease Control and Prevention of Zhejiang Province, Taizhou 318000, China
| | - N He
- Department of Epidemiology, School of Public Health, Fudan University, Shanghai 200032, China Yiwu Research Institute Fudan University, Yiwu 322000, China
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Chen L, Xie YL, Wu XH, Wu LL, Yang J, Gao Y, Mi Y, Yang F. Bioactivity and genome analysis of Bacillus amyloliquefaciens GL18 isolated from the rhizosphere of Kobresia myosuroides in an alpine meadow. Antonie Van Leeuwenhoek 2024; 117:16. [PMID: 38189906 DOI: 10.1007/s10482-023-01917-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 12/04/2023] [Indexed: 01/09/2024]
Abstract
The unique eco-environment of the Qinghai-Tibet Plateau breeds abundant microbial resources. In this research, Bacillus amyloliquefaciens GL18, isolated from the rhizosphere of Kobresia myosuroides from an alpine meadow, and the antagonistic activity, bacteriostatic hydrolase activity, and low temperature, salt, and drought resistance of it were determined and analysed. The seedlings of Avena sativa were root-irrigated using bacteria suspensions (cell concentration 1 × 107 cfu/mL) of GL18, and the growth-promoting effect of GL18 on it was determined under cold, salt and drought stress, respectively. The whole genome of GL18 was sequenced, and its functional genes were analysed. GL18 presented significant antagonistic activity to Fusarium graminearum, Fusarium acuminatum, Fusarium oxysporum and Aspergillus niger (inhibition zone diameter > 17 mm). Transparent zones formed on four hydrolase detection media, indicating that GL18 secreted cellulase, protease, pectinase and β-1,3-glucanase. GL18 tolerated conditions of 10 °C, 11% NaCl and 15% PEG-6000, presenting cold, salt and drought resistance. GL18 improved the cold, salt and drought tolerance of A. sativa and it showed significant growth effects under different stress. The total length of the GL18 genome was 3,915,550 bp, and the number of coding DNA sequence was 3726. Compared with the clusters of orthologous groups of proteins, gene ontology and kyoto encyclopedia of genes and genomes databases, 3088, 2869 and 2357 functional genes were annotated, respectively. GL18 contained gene clusters related to antibacterial substances, functional genes related to the synthesis of plant growth-promoting substances, and encoding genes related to stress resistance. This study identified an excellent Bacillus strain and provided a theoretical basis for improving stress resistance and promoting the growth of herbages under abiotic stress.
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Affiliation(s)
- L Chen
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, 810016, China
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, 810016, China
| | - Y L Xie
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, 810016, China.
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, 810016, China.
- Key Laboratory of Superior Forage Germplasm in the Qinghai-Tibetan Plateau, Qinghai University, Xining, 810016, China.
| | - X H Wu
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, 810016, China
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, 810016, China
| | - L L Wu
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, 810016, China
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, 810016, China
| | - J Yang
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, 810016, China
| | - Y Gao
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, 810016, China
| | - Y Mi
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, 810016, China
| | - F Yang
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, 810016, China
- College of Agriculture and Animal Husbandry, Qinghai University, Xining, 810016, China
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Xie YL, Li CY, Jiang SX, Shi WJ, Luo XB, Chen QM. [Research progress in the diagnosis and management of proliferative verrucous leukoplakia]. Zhonghua Kou Qiang Yi Xue Za Zhi 2023; 58:1083-1090. [PMID: 37818545 DOI: 10.3760/cma.j.cn112144-20230816-00088] [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: 10/12/2023]
Abstract
Proliferative verrucous leukoplakia (PVL) is one of the oral potentially malignant disorders (OPMD) with the highest malignant potential. PVL tends to be easily misdiagnosed owing to the resemblance in clinical manifestations between PVL and other diseases such as oral leukoplakia or oral lichen planus. PVL is considered as a special type of oral leukoplakia by some scholars, which is characterized by its tendency of recurrence and metastasis, along with its high risk of malignant transformation. So far, the accurate clinic diagnosis and management of PVL are still intractable due to the lack of definite histopathological definition, unified diagnostic criteria and effective treatment modalities. This review aims to provide the clinical practitioners with a series of advices on the clinical diagnosis and management of PVL by systematically reviewing the diagnostic logistics, therapeutic strategies, malignant transformation detection based on tremendous relevant data and evidence-based medicine.
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Affiliation(s)
- Y L Xie
- Department of Oral Medicine, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management Chengdu 610041, China
| | - C Y Li
- Department of Oral Medicine, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management Chengdu 610041, China
| | - S X Jiang
- Department of Oral Medicine, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management Chengdu 610041, China
| | - W J Shi
- Department of Oral Medicine, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management Chengdu 610041, China
| | - X B Luo
- Department of Oral Medicine, West China Hospital of Stomatology, Sichuan University & State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management Chengdu 610041, China
| | - Q M Chen
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine & Clinical Research Center for Oral Diseases of Zhejiang Province & Key Laboratory of Oral Biomedical Research of Zhejiang Province & Cancer Center of Zhejiang University, Hangzhou 310006, China
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7
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Jin YH, Wang YP, Xie YL, Tian GH, Zhang XY, Shi NN, Yang KH, Sun X, Chen YL, Wu DR, Guo XF, Ge L, Zhao C, Lu C, Jiang Y, Guo J, Yan SY, Wang YB, Huang Q, Ren XY, Rao YY, Wang YY, Yuan MQ, Zeng XT, Shang HC. Research on the development methodology for clinical practice guidelines for organic integration of traditional Chinese and Western medicine. Mil Med Res 2023; 10:45. [PMID: 37752599 PMCID: PMC10523673 DOI: 10.1186/s40779-023-00481-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Accepted: 09/07/2023] [Indexed: 09/28/2023] Open
Abstract
Integrated traditional Chinese medicine (TCM) and Western medicine (WM) is a new medical science grounded in the knowledge bases of both TCM and WM, which then forms a unique modern medical system in China. Integrated TCM and WM has a long history in China, and has made important achievements in the process of clinical diagnosis and treatment. However, the methodological defects in currently published clinical practice guidelines limit its development. The organic integration of TCM and WM is a deeper integration of TCM and WM. To realize the progression of "integration" to "organic integration", a targeted and standardized guideline development methodology is needed. Therefore, the purpose of this study is to establish a standardized development procedure for clinical practice guidelines for the organic integration of TCM and WM to promote the systematic integration of TCM and WM research results into clinical practice guidelines in order to achieve optimal results as the whole is greater than the sum of the parts.
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Affiliation(s)
- Ying-Hui Jin
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, 430071 China
| | - Yan-Ping Wang
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700 China
- China Center for Evidence Based Traditional Chinese Medicine, Beijing, 100029 China
| | - Ying-Lan Xie
- Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, 430074 China
| | - Gui-Hua Tian
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Xiao-Yu Zhang
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700 China
- China Center for Evidence Based Traditional Chinese Medicine, Beijing, 100029 China
| | - Nan-Nan Shi
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700 China
- China Center for Evidence Based Traditional Chinese Medicine, Beijing, 100029 China
| | - Ke-Hu Yang
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000 China
| | - Xin Sun
- China Center for Evidence-Based Medicine, West China Hospital of Sichuan University, Chengdu, 610041 China
| | - Yao-Long Chen
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000 China
| | - Da-Rong Wu
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510120 China
| | - Xin-Feng Guo
- Evidence-based Medicine Team, Guangdong Provincial Hospital of Traditional Chinese Medicine, Guangzhou, 510120 China
| | - Long Ge
- Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000 China
| | - Chen Zhao
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700 China
- China Center for Evidence Based Traditional Chinese Medicine, Beijing, 100029 China
| | - Cheng Lu
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700 China
- China Center for Evidence Based Traditional Chinese Medicine, Beijing, 100029 China
| | - Yin Jiang
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, 100700 China
- China Center for Evidence Based Traditional Chinese Medicine, Beijing, 100029 China
| | - Jing Guo
- Nanjing University of Chinese Medicine, Nanjing, 210023 China
| | - Si-Yu Yan
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, 430071 China
| | - Yong-Bo Wang
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, 430071 China
| | - Qiao Huang
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, 430071 China
| | - Xiang-Ying Ren
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, 430071 China
| | - Ying-Yue Rao
- Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, 430074 China
| | - Yun-Yun Wang
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, 430071 China
| | - Meng-Qian Yuan
- Jiangsu Province Hospital of Chinese Medicine, Nanjing, 210029 China
| | - Xian-Tao Zeng
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, 430071 China
| | - Hong-Cai Shang
- Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
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Xu Q, Yu ZX, Xie YL, Bai L, Liang SR, Ji QH, Zhou J. MicroRNA-137 inhibits pituitary prolactinoma proliferation by targeting AKT2. J Endocrinol Invest 2022; 46:1145-1154. [PMID: 36427136 DOI: 10.1007/s40618-022-01964-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Accepted: 11/07/2022] [Indexed: 11/27/2022]
Abstract
PURPOSE Prolactinoma is the most common type of pituitary adenoma. Most prolactinoma need medical treatment, but some of them are aggressive and require surgery. In previous decades, some miRNAs have been manifested as oncogenes or tumor suppressors. Consequently, miRNAs' abnormal expression involves tumorigenesis, invasion, and metastasis of different types of tumors, including pituitary tumors. The current study aim to explore the aggressiveness-associated miRNAs in prolactinoma and underlying molecular mechanisms based on the bioinformatic analysis and fundamental experiment studies. METHODS GSE46294 miRNA expression profile from the Gene Expression Omnibus (GEO) database was downloaded. Differentially expressed miRNAs (DEMs) were filtered from this data. Subsequently, the target genes of downregulated miRNAs were analyzed by Gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment. RT-qPCR, western blot, and CCK-8 assays were used to validate the effect of miR-137 on the proliferation of MMQ cells through AKT2. Finally, the binding site of rat miR-137 to AKT2 were predicted by Targetscan and Bibiserv database, and verified by double luciferase reporter assay. RESULTS Twenty-four changed DEMs (fourteen upregulated and ten downregulated) were identified. Target genes of downregulated DEMs were classified into three groups by GO terms. KEGG pathway enrichment analysis revealed these target genes enriched in the PI3K-Akt pathway. We also confirmed that miR-137 can target AKT2 and inhibit the proliferation of MMQ cells induced by AKT2. CONCLUSION MiR-137 suppressed prolactinomas' aggressive behavior by targeting AKT2.
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Affiliation(s)
- Q Xu
- Department of Endocrinology, Xijing Hospital, Air Force Medical University, Xi'an, 710032, China
| | - Z X Yu
- Department of Nephrology, Xijing Hospital, Air Force Medical University, Xi'an, 710032, China
| | - Y L Xie
- Department of Microbiology and Pathogen Biology, Basic Medical School, Air Force Medical University, Xi'an, 710032, China
- School of Life Sciences, Yan'an University, Yan'an, 716000, China
| | - L Bai
- Department of Microbiology and Pathogen Biology, Basic Medical School, Air Force Medical University, Xi'an, 710032, China
- School of Life Sciences, Yan'an University, Yan'an, 716000, China
| | - S R Liang
- Department of Endocrinology, Xijing Hospital, Air Force Medical University, Xi'an, 710032, China
- Department of Endocrinology, Tangdu Hospital, Air Force Medical University, Xi'an, 710038, China
| | - Q H Ji
- Department of Endocrinology, Xijing Hospital, Air Force Medical University, Xi'an, 710032, China.
| | - J Zhou
- Department of Endocrinology, Xijing Hospital, Air Force Medical University, Xi'an, 710032, China.
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Yuan JJ, Chen SH, Xie YL, Xue Q, Mao YY, Xing F, Wang DM, Yang JJ. [Effects of subanesthetic dose of esketamine on opioid consumption after thoracoscopic surgery]. Zhonghua Yi Xue Za Zhi 2022; 102:1108-1113. [PMID: 35436810 DOI: 10.3760/cma.j.cn112137-20211116-02559] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To investigate the effect of continuous intravenous infusion of subanesthetic dose of esketamine intraoperatively on postoperative opioid consumption in patients undergoing thoracoscopic surgery. Methods: A total of 71 patients with elective thoracoscopic lung surgery in the First Affiliated Hospital of Zhengzhou University from December 2020 to December 2021 were selected. Patients who were classified as grade Ⅰ or Ⅱ by the American Society of Anesthesiologists (ASA) and aged 18-70 years were included, including 32 males and 39 females, with a body mass index (BMI) of 18.5-30.0 kg/m2. The patients were randomly divided into three groups: (1) Control group (group C, n=24): continuous intravenous infusion of normal saline at the same rate during surgery; (2) Subanesthetic dose of esketamine 0.125 mg·kg-1·h-1 group (group ES1, n=23): continuous intravenous infusion of esketamine at a rate of 0.125 mg·kg-1·h-1 during surgery; (3) Subanesthetic dose of esketamine 0.250 mg·kg-1·h-1 group (group ES2, n=24): continuous intravenous infusion of esketamine at a rate of 0.250 mg·kg-1·h-1 during surgery. The main outcome measures were the total consumptions of hydromorphone of 3 groups within 24 and 48 hours after surgery. The secondary outcome measures were the extubation time, length of postanesthesia care unit (PACU) stay, the time of first feeding, and the incidences of adverse effects within 24 h after surgery in 3 groups. Results: The 24 h postoperative consumption of hydromorphone in group C, ES1 and ES2 was (5.4±1.0) mg, (4.5±1.5) mg and (4.0±0.8) mg, respectively. Likewise, the 48 h postoperative consumption of hydromorphone was (9.7±2.2) mg, (9.0±3.0) mg and (7.7±1.8) mg, respectively. Compared with group C, the 24 h postoperative hydromorphone consumptions were significantly reduced in group ES1 and ES2 (both P<0.05). The extubation time, length of PACU stay and the time of first feeding after surgery in group C were (23±10) min,(70±12) min,(17±3) h,in group ES1 were (22±4) min,(69±11) min,(14±5) h,in group ES2 were (16±8) min,(58±12) min,(14±3) h, respectively. Compared with group C and group ES1, both of the extubation time and length of PACU stay were shortened in group ES2 (both P<0.05). Compared with group C, the first postoperative feeding time of group ES1 and ES2 was shortened (both P<0.05). There were no differences in the incidences of adverse effects at postoperative 24 h among 3 groups (all P>0.05). Conclusion: Continuously intravenous infusion of subanesthetic esketamine at a rate of 0.250 mg·kg-1·h-1 can significantly reduce the postoperative opioid consumption and improve the patient's outcomes.
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Affiliation(s)
- J J Yuan
- Department of Anesthesiology, Pain and Perioperative Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - S H Chen
- Department of Anesthesiology, Pain and Perioperative Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - Y L Xie
- Department of Anesthesiology, Pain and Perioperative Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - Q Xue
- Department of Anesthesiology, Pain and Perioperative Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - Y Y Mao
- Department of Anesthesiology, Pain and Perioperative Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - F Xing
- Department of Anesthesiology, Pain and Perioperative Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - D M Wang
- Department of Anesthesiology, Pain and Perioperative Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - J J Yang
- Department of Anesthesiology, Pain and Perioperative Medicine, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
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Xie YL, Qin YC, Li AH, Yan ZQ, Qiao ZD. TET2 modulates proliferation and migration of vascular smooth muscle cells via LEMD2/NOX1/NOX4 signaling pathway. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.3358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Ten-eleven translocation 2 (TET2), a widely reported DNA hydroxymethylation enzyme, is involved in active DNA demethylation. TET2 may play an critical role in numerous cellular processes by regulating the level of DNA hydroxymethylation and altering gene expression. TET2 expression was proved to be down-regulated in aorta of spontaneously hypertensive rats (SHR) compared to Wistar-Kyoto rats (WKY) as well as in VSMCs subjected to15% cyclic stretch compared to 5% cyclic stretch. However, whether TET2 regulates vascular smooth muscle cells (VSMCs) proliferation and migration and its underlying mechanisms remains unclear.
Purpose
The present study aims to investigate whether TET2 affects VSMC proliferation and migration and its possible underlying mechanisms.
Methods
TET2 knockdown rat VSMC was established using crispr/Cas9 method. Different expression genes were identified by next generation sequencing (NGS) between TET2 knockdown VSMC and control VSMCs while differentially hydroxymethylated promoter region were identified by hydroxymethylcytosine DNA immunoprecipitation (hMeDIP) sequencing. Expression of mRNA and proteins was detected by qRT-PCR and western blot respectively. The proliferation and migration of VSMCs were assessed by EdU assay, flowcytometry assay, and wound healing assay. LEMD2 overexpression and knockdown stable VSMC lines were established through Lentiviral infection.
Results
The EdU assay and wound healing assay show that knockdown of TET2 enhanced proliferation and migration of VSMCs. NGS identified 123 differentially expressed genes (91 up-regulated and 32 down-regulated) between TET2 knockdown VSMCs and control VSMCs while hMeDIP sequencing identified 166 genes with differentially hydroxymethylated promoter region (68 up-regulated and 98 down-regulated) between TET2 knockdown VSMCs and control VSMCs. Through comparing these sequencing results, we identified a gene named as LEMD2 simultaneously present in both sequencing results. Expression of LEMD2 at mRNA and protein level was significantly increased in TET2 knockdown VSMCs compared to control VSMCs. Then we successfully established LEMD2 overexpression and knockdown stable VSMC lines and found that overexpression of LEMD2 enhanced proliferation and migration of VSMCs while knockdown of LEMD2 inhibited proliferation and migration of VSMCs. Furthermore, overexpression of LEMD2 up-regulated the expression of NOX1 and down-regulated the expression of NOX4 while knockdown of LEMD2 show the opposite effect.
Conclusion
The present study confirmed that TET2 modulates VSMC proliferation and migration via LEMD2/NOX1/NOX4. The ROS level may be involved in VSMC proliferation and migration.
Funding Acknowledgement
Type of funding sources: Public grant(s) – National budget only. Main funding source(s): National natural science foundation of China
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Affiliation(s)
- Y L Xie
- shanghai Jiaotong University, School of Lifescience and Biotechnology, Shanghai, China
| | - Y C Qin
- Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - A H Li
- Anhui University of Science and Technology, Anhui, China
| | - Z Q Yan
- Fengxian District Central Hospital, Central Labratory, Shanghai, China
| | - Z D Qiao
- shanghai Jiaotong University, School of Lifescience and Biotechnology, Shanghai, China
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Zeng RL, Wu K, Dai Z, Xie YL. [The Museum of Western Studies on Chinese Medicine:Chinese medicine in the western societies]. Zhonghua Yi Shi Za Zhi 2021; 51:313-320. [PMID: 34794272 DOI: 10.3760/cma.j.cn112155-20201005-00155] [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
The historical artifacts displayed in the Museum of Western study on Chinese Medicine at Yunnan University of Chinese Medicine came from a variety of Chinese medical schools in America and European countries. They are in the memorial galleries for some well-known figures, such as George Soulié de Morant (Su Lie), Jacques-André Lavier (La Wei Ai), Felix Mann (Man Fu Li) and Manfred Porkert (Man Xi Bo), representing the development and status of respective Chinese medical schools in America and European countries. The displayed artifacts are nearly 3,000 photos, manuscripts, documents and more than 500 hours of audiovisual materials, including instruments for acupuncture and moxibustion, books, passports, letters and even supplies for their life. The displayed artifacts demonstrate the process and the access of people in the western societies to know, learn and take use of Chinese medicine.
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Affiliation(s)
- R L Zeng
- Institute of Western Studies on Chinese Medicine, Yunnan University of Chinese Medicine, Kunming 650500 ,China
| | - K Wu
- Institute of Western Studies on Chinese Medicine, Yunnan University of Chinese Medicine, Kunming 650500 ,China
| | - Z Dai
- Institute of Western Studies on Chinese Medicine, Yunnan University of Chinese Medicine, Kunming 650500 ,China
| | - Y L Xie
- Institute of Western Studies on Chinese Medicine, Yunnan University of Chinese Medicine, Kunming 650500 ,China
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12
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Ding X, Xie YL, Xia L, Liu YP, You R, Hong MH, Chen MY. [Exploration of surgical treatment of newly untreated nasopharyngeal carcinoma]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2021; 56:772-776. [PMID: 34344110 DOI: 10.3760/cma.j.cn115330-20200827-00698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- X Ding
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou 510060, China State Key Laboratory of Oncology in South China,Collaborative Innovation Center for Cancer Medicine,Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou 510060, China
| | - Y L Xie
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou 510060, China State Key Laboratory of Oncology in South China,Collaborative Innovation Center for Cancer Medicine,Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou 510060, China
| | - L Xia
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou 510060, China State Key Laboratory of Oncology in South China,Collaborative Innovation Center for Cancer Medicine,Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou 510060, China
| | - Y P Liu
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou 510060, China State Key Laboratory of Oncology in South China,Collaborative Innovation Center for Cancer Medicine,Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou 510060, China
| | - R You
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou 510060, China State Key Laboratory of Oncology in South China,Collaborative Innovation Center for Cancer Medicine,Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou 510060, China
| | - M H Hong
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou 510060, China Department of Clinical Research, Sun Yat-sen University Cancer Center, Guangzhou 510060, China
| | - M Y Chen
- Department of Nasopharyngeal Carcinoma, Sun Yat-sen University Cancer Center, Guangzhou 510060, China State Key Laboratory of Oncology in South China,Collaborative Innovation Center for Cancer Medicine,Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou 510060, China
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Su Y, Shen WD, Liu J, Liu MB, Xie YL, Wang WJ, Dai P. [Reconstruction of complex tissue defects in temporal region: report of 3 cases]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2021; 56:487-492. [PMID: 34011003 DOI: 10.3760/cma.j.cn115330-20200622-00522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To discuss the techniques and repairing methods of various degree of compound tissue defects in the auriculotemporal region. Methods: Retrospective analysis was conducted on three cases of different repairing methods for huge compound tissue defects in different degrees in the auriculotemporal region after the resection of the malignant tumor or sinus tract due to repeated infection in our hospital. Results: Following total removal of the tumors or sinus tract in all patients, we applied retroauricular lingual flap transfer repairing, latissimus dorsi flap free transfer repairing and vascular anastomosis, scalp tissue expansion in stage Ⅰ, then repairing the lesion with expanded scalp and filling the huge mastoid cavity with abdominal fat in stage Ⅱ, respectively, according to the characteristics of compound tissue defects in the auriculotemporal region. All free flaps survived well. Conclusions: The anatomy of the auricular-temporal area is complex and involves important vascular and neural structures of head and neck and lateral skull base. The huge composite tissue defect following auriculotemporal region surgery, which is composed of skin, muscle and bone tissue, needs to be repaired in one stage. Therefore, flexible repairing methods should be chosen based on different situations, for attaining the goal of completely removing tumor and lesions, and then, covering the operation cavity.
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Affiliation(s)
- Y Su
- Department of Otorhinolaryngology Head and Neck Surgery, Hainan Hospital of PLA General Hospital, Sanya 572013, China Clinical Research Center for Otolaryngologic Diseases, Hainan 572013, China Institute of Otolaryngology, Chinese PLA General Hospital, Beijing 100853, China National Clinical Research Center for Otolaryngologic Diseases, Beijing 100853, China
| | - W D Shen
- Institute of Otolaryngology, Chinese PLA General Hospital, Beijing 100853, China National Clinical Research Center for Otolaryngologic Diseases, Beijing 100853, China
| | - J Liu
- Institute of Otolaryngology, Chinese PLA General Hospital, Beijing 100853, China National Clinical Research Center for Otolaryngologic Diseases, Beijing 100853, China
| | - M B Liu
- Department of Otorhinolaryngology Head and Neck Surgery, Hainan Hospital of PLA General Hospital, Sanya 572013, China Clinical Research Center for Otolaryngologic Diseases, Hainan 572013, China Institute of Otolaryngology, Chinese PLA General Hospital, Beijing 100853, China National Clinical Research Center for Otolaryngologic Diseases, Beijing 100853, China
| | - Y L Xie
- Department of Otorhinolaryngology Head and Neck Surgery, Hainan Hospital of PLA General Hospital, Sanya 572013, China Clinical Research Center for Otolaryngologic Diseases, Hainan 572013, China Institute of Otolaryngology, Chinese PLA General Hospital, Beijing 100853, China National Clinical Research Center for Otolaryngologic Diseases, Beijing 100853, China
| | - W J Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Hainan Hospital of PLA General Hospital, Sanya 572013, China Clinical Research Center for Otolaryngologic Diseases, Hainan 572013, China Institute of Otolaryngology, Chinese PLA General Hospital, Beijing 100853, China National Clinical Research Center for Otolaryngologic Diseases, Beijing 100853, China
| | - P Dai
- Institute of Otolaryngology, Chinese PLA General Hospital, Beijing 100853, China National Clinical Research Center for Otolaryngologic Diseases, Beijing 100853, China
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14
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Xu XB, Hu Y, Xie YL, Han Z. [The hemodynamic study of internal jugular vein in patients with pulsatile tinnitus by color doppler sonography]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2019; 33:915-917. [PMID: 31623033 DOI: 10.13201/j.issn.1001-1781.2019.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Indexed: 11/12/2022]
Abstract
Objective:To investigate the hemodynamic changes of internal jugular vein(IJV) in patients with pulsatile tinnitus(PT) detected by color doppler sonography(CDS). To explore the correlation of PT with IJV drainage dominance and the value of CDS in the diagnosis of PT. Method:Two hundred and twenty-one patients with PT were examined with the CDS and IJV compression test. The hemodynamic data of the upper, middle and lower IJV were compared with both PT side and unaffected side. The correlation of the PT with the IJV drainage dominance was analyzed. Result:A total of 125 cases(56.6%) of 221 patients with PT underwent ultrasonic IJV compression test with positive results, 96 cases(43.3%) with negative results. In the positive compression test group, the tinnitus disappeared after IJV being completely compressed in 109 cases(87.2%), and in 16 cases(12.8%) after IJV being partial closure. The extent of sectional area reduction was: upper jugular vein(75.41 ±9.39)%, middle jugular vein(80.25±13.16)%, lower jugular vein(86.58± 7.53)%. The blood flow volume on the tinnitus side was obviously higher than that on the unaffected side(P=0.001). In the negative compression test group, there was no significant difference in blood flow volume between tinnitus side and unaffected side. In the IJV positive compression test group, 54 cases(43.2%) were IJV drainage dominance combined, and 71 cases(56.8%) were non-dominant combined. In the IJV negative compression test group, 24 cases(25%) were IJV drainage dominance combined, and 72 cases(75%) were non-dominant combined. Conclusion:The positive result of IJV compression test using CDS and the flow volume of IJV on the affected side significantly higher than that on the unaffected side contributed to the diagnosis of venous PT. In this study, the IJV non-dominant side was more common in the venous PT.
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Affiliation(s)
- X B Xu
- Department of Radiology,Eye and ENT Hospital of Fudan University,Shanghai,200031,China
| | - Y Hu
- Department of Otorhinolaryngology,Eye and ENT Hospital of Fudan University
| | - Y L Xie
- Department of Otorhinolaryngology,Eye and ENT Hospital of Fudan University
| | - Z Han
- Department of Otorhinolaryngology,Eye and ENT Hospital of Fudan University
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Ji MF, Sheng W, Cheng WM, Ng MH, Wu BH, Yu X, Wei KR, Li FG, Lian SF, Wang PP, Quan W, Deng L, Li XH, Liu XD, Xie YL, Huang SJ, Ge SX, Huang SL, Liang XJ, He SM, Huang HW, Xia SL, Ng PS, Chen HL, Xie SH, Liu Q, Hong MH, Ma J, Yuan Y, Xia NS, Zhang J, Cao SM. Incidence and mortality of nasopharyngeal carcinoma: interim analysis of a cluster randomized controlled screening trial (PRO-NPC-001) in southern China. Ann Oncol 2019; 30:1630-1637. [PMID: 31373615 DOI: 10.1093/annonc/mdz231] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Previous mass screening studies have shown that IgA antibodies against Epstein-Barr Virus (EBV) can facilitate early detection of nasopharyngeal carcinoma (NPC), but the impact of EBV-antibody screening for NPC-specific mortality remains unknown. PATIENTS AND METHODS A prospective, cluster randomized, controlled trial for NPC screening (PRO-NPC-001) was conducted in 3 selected towns of Zhongshan City and 13 selected towns of Sihui City in southern China beginning in 2008. Serum samples of the screening group were tested for two previously selected anti-EBV antibodies. Subjects with serological medium risk were subsequently retested annually for 3 years, and those with serological high risk were referred to otorhinolaryngologists for diagnostic check-up. An interim analysis was carried out to evaluate the primary end points of the NPC-specific mortality and the early diagnostic rate, and the secondary end point of the NPC incidence, through linkage with the database of Zhongshan City. RESULTS Among 70 296 total subjects, 29 413 screened participants (41.8% of the total subjects) in the screening group and 50 636 in the control group, 153 (43.3 per 100 000 person-year), 62 (55.3 per 100 000 person-year) and 99 (33.1 per 100 000 person-year) NPC cases were identified. The early diagnostic rates of NPC were significantly higher in the participants (79.0%, P < 0.0001) and the screening group (45.9%, P < 0.0001) compared with the control group (20.6%). Although no differences were found between NPC-specific mortality of the screening group and the control group [relative risk (RR)= 0.82, 95% confidence interval (CI) 0.37-1.79], lower NPC-specific mortality was noticed among participants from the screening group versus the control group (RR = 0.22, 95% CI 0.09-0.49). CONCLUSION IgA antibodies against EBV can identify high-risk population and was effective in screening for early asymptomatic NPC. Although the mortality reduction was not significant in the primary end point, we noted encouraging evidence of a mortality reduction in screening participants in this interim analysis. CLINICAL TRIAL NUMBER NCT00941538.
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Affiliation(s)
- M F Ji
- Cancer Research Institute of Zhongshan City, Zhongshan Hospital of Sun Yat-sen University, Zhongshan, People's Republic of China
| | - W Sheng
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Collaborative Innovation Center of Biological Products, School of Public Health, Xiamen University, Xiamen, People's Republic of China
| | - W M Cheng
- Cancer Research Institute of Zhongshan City, Zhongshan Hospital of Sun Yat-sen University, Zhongshan, People's Republic of China
| | - M H Ng
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Collaborative Innovation Center of Biological Products, School of Public Health, Xiamen University, Xiamen, People's Republic of China
| | - B H Wu
- Cancer Research Institute of Zhongshan City, Zhongshan Hospital of Sun Yat-sen University, Zhongshan, People's Republic of China
| | - X Yu
- Cancer Research Institute of Zhongshan City, Zhongshan Hospital of Sun Yat-sen University, Zhongshan, People's Republic of China
| | - K R Wei
- Cancer Research Institute of Zhongshan City, Zhongshan Hospital of Sun Yat-sen University, Zhongshan, People's Republic of China
| | - F G Li
- Cancer Research Institute of Zhongshan City, Zhongshan Hospital of Sun Yat-sen University, Zhongshan, People's Republic of China
| | - S F Lian
- Cancer Research Institute of Zhongshan City, Zhongshan Hospital of Sun Yat-sen University, Zhongshan, People's Republic of China
| | - P P Wang
- Cancer Research Institute of Zhongshan City, Zhongshan Hospital of Sun Yat-sen University, Zhongshan, People's Republic of China
| | - W Quan
- Cancer Research Institute of Zhongshan City, Zhongshan Hospital of Sun Yat-sen University, Zhongshan, People's Republic of China
| | - L Deng
- Cancer Research Institute of Zhongshan City, Zhongshan Hospital of Sun Yat-sen University, Zhongshan, People's Republic of China
| | - X H Li
- Cancer Research Institute of Zhongshan City, Zhongshan Hospital of Sun Yat-sen University, Zhongshan, People's Republic of China
| | - X D Liu
- Cancer Research Institute of Zhongshan City, Zhongshan Hospital of Sun Yat-sen University, Zhongshan, People's Republic of China
| | - Y L Xie
- Cancer Research Institute of Zhongshan City, Zhongshan Hospital of Sun Yat-sen University, Zhongshan, People's Republic of China
| | - S J Huang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Collaborative Innovation Center of Biological Products, School of Public Health, Xiamen University, Xiamen, People's Republic of China
| | - S X Ge
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Collaborative Innovation Center of Biological Products, School of Public Health, Xiamen University, Xiamen, People's Republic of China
| | - S L Huang
- Xiaolan Public Health Service Center, Zhongshan, People's Republic of China
| | - X J Liang
- Xiaolan Public Health Service Center, Zhongshan, People's Republic of China
| | - S M He
- Xiaolan People's Hospital of Zhongshan City, Zhongshan, People's Republic of China
| | - H W Huang
- Chen Xinhai Hospital of Xiaolan, Zhongshan, People's Republic of China
| | - S L Xia
- Zhongshan Center for Disease Control and Prevention, Zhongshan, People's Republic of China
| | - P S Ng
- State Key Laboratory for Emerging Infectious Diseases, Department of Microbiology and Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong, SAR
| | - H L Chen
- State Key Laboratory for Emerging Infectious Diseases, Department of Microbiology and Research Centre of Infection and Immunology, The University of Hong Kong, Hong Kong, SAR
| | - S H Xie
- State Key Laboratory of Oncology in Southern China, Department of Epidemiology, Cancer Prevention Center, Sun Yat-sen University Cancer Center, Guangzhou, People's Republic of China
| | - Q Liu
- State Key Laboratory of Oncology in Southern China, Department of Epidemiology, Cancer Prevention Center, Sun Yat-sen University Cancer Center, Guangzhou, People's Republic of China
| | - M H Hong
- State Key Laboratory of Oncology in Southern China, Department of Epidemiology, Cancer Prevention Center, Sun Yat-sen University Cancer Center, Guangzhou, People's Republic of China
| | - J Ma
- State Key Laboratory of Oncology in Southern China, Department of Epidemiology, Cancer Prevention Center, Sun Yat-sen University Cancer Center, Guangzhou, People's Republic of China
| | - Y Yuan
- Cancer Research Institute of Zhongshan City, Zhongshan Hospital of Sun Yat-sen University, Zhongshan, People's Republic of China
| | - N S Xia
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Collaborative Innovation Center of Biological Products, School of Public Health, Xiamen University, Xiamen, People's Republic of China
| | - J Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Collaborative Innovation Center of Biological Products, School of Public Health, Xiamen University, Xiamen, People's Republic of China.
| | - S M Cao
- State Key Laboratory of Oncology in Southern China, Department of Epidemiology, Cancer Prevention Center, Sun Yat-sen University Cancer Center, Guangzhou, People's Republic of China.
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Han J, Wei JG, Gao XZ, Xu Y, Zhang L, Xie YL, Liu YQ, Li WC, Li SL. [Tracheobronchopathia osteochondroplastica: a clinicopathological analysis of 18 cases]. Zhonghua Bing Li Xue Za Zhi 2019; 48:303-306. [PMID: 30955267 DOI: 10.3760/cma.j.issn.0529-5807.2019.04.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the clinical symptoms, imaging features, pathologic manifestations and diagnosis of tracheobronchopathia osteochondroplastica (TO). Methods: The clinical data, imaging and pathologic features and outcome of 18 TO patients diagnosed at the First Affiliated Hospital of Zhengzhou University from August 2011 to August 2018 were collected and analyzed. Results: The 18 TO patients included 10 males and 8 females; patients' age range was 31 to 64 years (mean 52 years). Six patients (6/18) were smokers. The main presenting clinical symptoms included cough in 15 cases, expectoration in eight cases (8/18), hemoptysis in five cases (5/18), chest tightness in four cases, wheezing in three cases and chest pain in two cases. The time interval between the initial symptoms and diagnosis was 1.5 to 360.0 months, and the average time interval was 45.2 months. Blood calcium and phosphorus were normal in 18 patients (18/18). Chest X-ray showed no direct evidence of TO. Six patients (6/18) showed irregular changes in the trachea or bronchial wall by chest CT scan. Three patients (3/18) had mild ventilatory obstruction. TO was classified as: 10 cases (10/18) were scattered type, seven cases (7/18) were diffuse type and one case (1/18) was confluent type. Epithelial squamous metaplasia, submucosal cartilage, submucosal ossification and hematopoietic bone marrow within the ossified areas were the characteristic histopathologic findings of TO. Conclusions: TO is a rare benign disorder that shows atypical presentation. CT scan is insensitive, the histopathology shows submucosal cartilage or ossification. TO should be diagnosed by comprehensive consideration of clinical symptoms, imaging and pathology.
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Affiliation(s)
- J Han
- Department of Pathology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J G Wei
- Department of Pathology, Shaoxing People's Hospital of Zhejiang Province, Shaoxing 312000, China
| | - X Z Gao
- Department of Pathology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Y Xu
- Department of Pathology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - L Zhang
- Department of Pathology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Y L Xie
- Department of Pathology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Y Q Liu
- Department of Pathology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - W C Li
- Department of Pathology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - S L Li
- Department of Pathology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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17
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Han J, Gao XZ, Wei JG, Xie YL, Liu YQ, Li WC, Li SL. [Clinicopathological features and prognostic factors of primary pulmonary adenoid cystic carcinoma: a study of 59 cases]. Zhonghua Bing Li Xue Za Zhi 2019; 48:204-208. [PMID: 30831646 DOI: 10.3760/cma.j.issn.0529-5807.2019.03.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the clinicopathological features and prognostic indicators of primary pulmonary adenoid cystic carcinoma. Methods: Fifty-nine cases of primary pulmonary adenoid cystic carcinoma were collected from August 2011 to December 2017 at the First Affiliated Hospital of Zhengzhou University. All cases were retrospectively studied by hematoxylin-eosin staining and immunohistochemistry. The clinicopathological features were reviewed and patient survival analysis was performed using Kaplan-Meier method and Cox regression model. Status of epidermal growth factor receptor (EGFR), KRAS, BRAF genes was analyzed in 15 of the 59 study cases. Results: Among 59 cases, there were 25 males and 34 females with male to female ratio of 1.0 to 1.4. The patient age ranged from 29 to 81 years with a mean age of 55 years. The tumor max diameters ranged from 1.0 to 9.6 cm with an average diameter of 2.8 cm. Fifteen (25.4%) patients were smokers while 44 patients (74.6%) were non-smokers. Tumors predominantly occurred in the trachea (28/59,47.5%), the left main bronchus (7/59,11.9%) and the right bronchus (5/59,8.5%). Grossly, the tumors were well circumscribed, greyish-white nodules. Microscopically the tumor cells were small and uniform, and arranged in tubular, cribriform, and solid patterns. Immunohistochemistry showed that the tumor cells were positive for CK7, S-100 protein, Sox-10, CD117 and p63. TTF1 was only positive in 2 cases and Ki-67 index ranged from 3% to 40%. Eighteen cases (30.5%) were gradeⅠ, 26 cases (40.1%) grade Ⅱ, and 15 cases (25.4%) grade Ⅲ. Overall, 39 cases (66.1%), 7 cases (11.9%), 10 cases (16.9%), and 3 cases (5.1%) were at stages Ⅰ, Ⅱ, Ⅲ, and Ⅳ, respectively. Twenty-three patients (39.0%) received surgical therapy, 3 patients (5.1%) surgery combined with radiotherapy, 9 patients (15.2%) surgery combined with chemotherapy, and 24 cases (40.7%) chemotherapy only. No mutation of EGFR, KRAS and BRAF was detected in all 15 tested cases. The overall survival rate at the first, third and fifth years was 94.9%, 86.4% and 84.7%, respectively. Prognostic analysis showed that patient's age and tumor size were statistically associated with the survival (P<0.05). Conclusions: Majority of the patients with primary pulmonary adenoid cystic carcinoma are at an early clinical stage with a favorable prognosis. The size of the tumor and the age of the patients are independent prognostic indicators.
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Affiliation(s)
- J Han
- Department of Pathology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - X Z Gao
- Department of Pathology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - J G Wei
- Department of Pathology, Shaoxing People's Hospital, Zhejiang Province, Shaoxing 312000, China
| | - Y L Xie
- Department of Pathology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Y Q Liu
- Department of Pathology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - W C Li
- Department of Pathology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - S L Li
- Department of Pathology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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18
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Ju SM, Chen F, Liu J, Qin G, Xie YL, Wang ZL, Wei XM. [Establishment and characterization of an orthotopic murine model of mucosal malignant melanoma of the maxillary sinus]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 31:1599-1602;1605. [PMID: 29797958 DOI: 10.13201/j.issn.1001-1781.2017.20.013] [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: 07/24/2017] [Indexed: 02/05/2023]
Abstract
Objective:To establish a stable and reliable orthotopic murine model of mucosal malignant melanoma of the maxillary sinus so as to provide animal models for further studying for pathogenesis and therapy of sinonasal malignancy.Method:B16 were implanted in the right maxillary sinus of male nude mice. After tumors appeared in right maxillary sinus, tumor growth and survival rate were recorded. The degree of tumor infiltration was observed through the MRI.Result:Mice with B16 implanted in right maxillary sinus developed primary tumors. The survival and the tumor volume were related to the number of tumor cells implanted. We found that the tumor can invade into nasal cavity, orbital cavity and the basilar region using MRI.Conclusion:We successfully established a model for mucosal malignant melanoma of the maxillary sinus. This model offers an experimental tool for further research on biological characteristics of sinonasal malignancy and the development of new therapy.
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Affiliation(s)
- S M Ju
- Department of Otolaryngology Head and Neck Surgery, the Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China
| | - F Chen
- Department of Otolaryngology Head and Neck Surgery, West China Hospital
| | - J Liu
- Department of Otolaryngology Head and Neck Surgery, West China Hospital
| | - G Qin
- Department of Otolaryngology Head and Neck Surgery, the Affiliated Hospital of Southwest Medical University, Luzhou, 646000, China
| | - Y L Xie
- Department of Otolaryngology Head and Neck Surgery, Chengdu No.7 People's Hospital
| | - Z L Wang
- State Key Laboratory of Biotherapy, West China Hospital
| | - X M Wei
- Southwest Medical University
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Ma ZJ, Xia XT, Chen SM, Zhao XC, Zeng LL, Xie YL, Chao SY, Xu JT, Sun YG, Li RZ, Guanque ZX, Han JL, Lei CZ. Identification and diversity of Y-chromosome haplotypes in Qinghai yak populations. Anim Genet 2018; 49:618-622. [PMID: 30229981 DOI: 10.1111/age.12723] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/07/2018] [Indexed: 01/12/2023]
Abstract
The aim of the present study was to perform a preliminary analysis of the characterization and diversity of Y-chromosome haplotypes/haplogroups in yak of Qinghai Province, China. A total of 322 male yaks from nine populations belonging to three officially recognized breeds (Gaoyuan, Huanhu and Datong) were sampled. Animals were genotyped using six previously reported Y-SNPs present in the SRY, USP9Y, UTY, AMELY and OFD1Y genes and four new Y-SNPs in the OFD1Y gene (g.569A>C, g.578A>C, g.608G>T and g.653G>C) identified in this study. Seven Y-chromosome haplotypes (H1-H7) were identified according to the combination of the 10 Y-SNPs. H1, H2 and H6 were the most common and shared haplotypes across all yak populations/breeds. Private haplotypes H3 and H7 were detected in the Datong breed; H4 in Guoleimude, Qumalai, Qilian, Tianjun and Ganglong populations; and H5 in Qumalai of Gaoyuan breed. Haplotype clustering and network analyses inferred two haplogroups, Y1 and Y2, indicating two divergent lineages of paternal origins of Qinghai yak. The analysis of molecular variance showed a significant difference among individuals (P < 0.0001) with more than 93% of the total genetic variation present within populations, suggesting a weak genetic structure among Qinghai yak populations. The overall Y-haplotype diversity was 0.538 ± 0.028, showing a relatively high diversity in Qinghai yak. The Gaoyuan and Datong breeds had similar haplotype diversities (0.547 ± 0.030 and 0.553 ± 0.083, respectively), which were higher than that of the Huanhu breed (0.441 ± 0.098). Our results support the conservation and sustainable use of unique yak genetic resources in Qinghai.
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Affiliation(s)
- Z J Ma
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
- Academy of Animal Science and Veterinary Medicine, Qinghai University, Xining, Qinghai, 810016, China
| | - X T Xia
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - S M Chen
- Academy of Animal Science and Veterinary Medicine, Qinghai University, Xining, Qinghai, 810016, China
| | - X C Zhao
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - L L Zeng
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Y L Xie
- Golmud Station of Animal Husbandry and Veterinary, Haixi Autonomous Prefecture of Qinghai Province, Golmud, Qinghai, 816000, China
| | - S Y Chao
- Animal Epidemic Disease Prevention and Control Center, Haixi Autonomous Prefecture of Qinghai Province, Delingha, Qinghai, 817099, China
| | - J T Xu
- Academy of Animal Science and Veterinary Medicine, Qinghai University, Xining, Qinghai, 810016, China
| | - Y G Sun
- Academy of Animal Science and Veterinary Medicine, Qinghai University, Xining, Qinghai, 810016, China
| | - R Z Li
- Academy of Animal Science and Veterinary Medicine, Qinghai University, Xining, Qinghai, 810016, China
| | - Z X Guanque
- General Station of Animal Husbandry of Qinghai Province, Xining, 810008, China
| | - J L Han
- CAAS-ILRI Joint Laboratory on Livestock and Forage Genetic Resources, Institute of Animal Science, Chinese Academy of Agricultural Sciences (CAAS), Beijing, 100193, China
- International Livestock Research Institute (ILRI), Nairobi, 00100, Kenya
| | - C Z Lei
- Key Laboratory of Animal Genetics, Breeding and Reproduction of Shaanxi Province, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi, 712100, China
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Yan Z, Yue JJ, Zhang CH, Lu BQ, Xie YL, Zhang LX, Peng ZQ. Parasitism of Spodoptera litura (Lepidoptera: Noctuidae) by Microplitis prodeniae (Hymenoptera: Braconidae). Neotrop Entomol 2018; 47:139-144. [PMID: 28929439 DOI: 10.1007/s13744-017-0542-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Accepted: 06/30/2017] [Indexed: 06/07/2023]
Abstract
Spodoptera litura Fabricius is a major vegetable pest that is widely distributed throughout tropical, subtropical and temperate regions. Microplitis prodeniae Rao and Chandry is a solitary endoparasitoid of S. litura. To assess the potential use of this parasitoid as a biological control agent, the reproductive schedule, fecundity and functional response of M. prodeniae were investigated under conditions of 28 ± 1°C and 70 ± 10% relative humidity with a 14:10-h L:D photoperiod. The parasitoid's average lifetime fecundity was 171.0 ± 10.4 eggs, of which approximately 50% were laid within the first 3 days. Additionally, M. prodeniae exhibited a Holling type II functional response, and the estimated maximum numbers of the 1st, 2nd and 3rd instar larvae that were parasitized by a single M. prodeniae female were 71.6, 78.4 and 41.5 larvae over a 24-h period, respectively. The results of this study suggest that M. prodeniae has great potential as a candidate for controlling S. litura and can guide efforts in its mass production.
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Affiliation(s)
- Z Yan
- Institute of Medicinal Plant Development Yunnan Branch, Chinese Academy of Medical Sciences, Jinghong, China
- Environment and Plant Protection Institute, Key Lab for Baleful Biology Detection and Monitoring of Tropical Agriculture of Hainan Province, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China
- College of Environment and Plant Protection, Hainan Univ, Haikou, China
| | - J J Yue
- Environment and Plant Protection Institute, Key Lab for Baleful Biology Detection and Monitoring of Tropical Agriculture of Hainan Province, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China
- College of Environment and Plant Protection, Hainan Univ, Haikou, China
| | - C H Zhang
- College of Environment and Plant Protection, Hainan Univ, Haikou, China
| | - B Q Lu
- Environment and Plant Protection Institute, Key Lab for Baleful Biology Detection and Monitoring of Tropical Agriculture of Hainan Province, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China
| | - Y L Xie
- College of Environment and Plant Protection, Hainan Univ, Haikou, China
| | - L X Zhang
- Institute of Medicinal Plant Development Yunnan Branch, Chinese Academy of Medical Sciences, Jinghong, China
| | - Z Q Peng
- Environment and Plant Protection Institute, Key Lab for Baleful Biology Detection and Monitoring of Tropical Agriculture of Hainan Province, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China.
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21
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Wang YL, Liu MF, Liu R, Xie YL, Li X, Yan ZB, Liu JM. High stability of electro-transport and magnetism against the A-site cation disorder in SrRuO3. Sci Rep 2016; 6:27840. [PMID: 27297396 PMCID: PMC4906521 DOI: 10.1038/srep27840] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 05/24/2016] [Indexed: 11/09/2022] Open
Abstract
It is known that the electro-transport and magnetism of perovskite alkaline-earth ruthenate oxides are sensitive to the lattice distortion associated with the A-site cation size. Orthorhombic CaRuO3 and cubic BaRuO3 exhibit distinctly different electro-transport and magnetic properties from orthorhombic SrRuO3. It has been suggested that SrRuO3 can be robust against some intrinsic/external perturbations but fragile against some others in terms of electro-transport and magnetism, and it is our motivation to explore such stability against the local site cation disorder. In this work, we prepare a set of SrRuO3-based samples with identical averaged A-site size but different A-site cation disorder (size mismatch) by Ca and Ba co-substitution of Sr. It is revealed that the electro-transport and magnetism of SrRuO3 demonstrate relatively high stability against this A-site cation disorder, characterized by the relatively invariable electrical and magnetic properties in comparison with those of SrRuO3 itself. A simple electro-transport network model is proposed to explain quantitatively the measured behaviors. The present work suggests that SrRuO3 as an itinerant electron ferromagnetic metal possesses relatively high robustness against local lattice distortion and cation occupation disorder.
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Affiliation(s)
- Y L Wang
- Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - M F Liu
- Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - R Liu
- Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Y L Xie
- Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - X Li
- Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Z B Yan
- Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - J-M Liu
- Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.,Institute for Advanced Materials, Hubei Normal University, Huangshi 435002, China
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Shang T, Zhan QF, Ma L, Yang HL, Zuo ZH, Xie YL, Li HH, Liu LP, Wang BM, Wu YH, Zhang S, Li RW. Pure spin-Hall magnetoresistance in Rh/Y3Fe5O12 hybrid. Sci Rep 2015; 5:17734. [PMID: 26639108 PMCID: PMC4671003 DOI: 10.1038/srep17734] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2015] [Accepted: 11/05/2015] [Indexed: 11/09/2022] Open
Abstract
We report an investigation of anisotropic magnetoresistance (AMR) and anomalous Hall resistance (AHR) of Rh and Pt thin films sputtered on epitaxial Y3Fe5O12 (YIG) ferromagnetic insulator films. For the Pt/YIG hybrid, large spin-Hall magne toresistance (SMR) along with a sizable conventional anisotropic magnetoresistance (CAMR) and a nontrivial temperature dependence of AHR were observed in the temperature range of 5–300 K. In contrast, a reduced SMR with negligible CAMR and AHR was found in Rh/YIG hybrid. Since CAMR and AHR are characteristics for all ferromagnetic metals, our results suggest that the Pt is likely magnetized by YIG due to the magnetic proximity effect (MPE) while Rh remains free of MPE. Thus the Rh/YIG hybrid could be an ideal model system to explore physics and devices associated with pure spin current.
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Affiliation(s)
- T Shang
- Key Laboratory of Magnetic Materials and Devices &Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, P. R. China
| | - Q F Zhan
- Key Laboratory of Magnetic Materials and Devices &Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, P. R. China
| | - L Ma
- Department of Physics, Tongji University, Shanghai, 200092, P. R. China
| | - H L Yang
- Key Laboratory of Magnetic Materials and Devices &Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, P. R. China
| | - Z H Zuo
- Key Laboratory of Magnetic Materials and Devices &Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, P. R. China
| | - Y L Xie
- Key Laboratory of Magnetic Materials and Devices &Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, P. R. China
| | - H H Li
- Key Laboratory of Magnetic Materials and Devices &Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, P. R. China
| | - L P Liu
- Key Laboratory of Magnetic Materials and Devices &Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, P. R. China
| | - B M Wang
- Key Laboratory of Magnetic Materials and Devices &Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, P. R. China
| | - Y H Wu
- Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3 117583, Singapore
| | - S Zhang
- Department of Physics, University of Arizona, Tucson, Arizona 85721, USA
| | - Run-Wei Li
- Key Laboratory of Magnetic Materials and Devices &Zhejiang Province Key Laboratory of Magnetic Materials and Application Technology, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, P. R. China
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Xie YL, Lin L, Yan ZB, Liu JM. Magnetic phase transitions and monopole excitations in spin ice under uniaxial pressure: A Monte Carlo simulation. J Appl Phys 2015; 117:17C714. [PMID: 25784777 PMCID: PMC4344469 DOI: 10.1063/1.4913309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Accepted: 10/27/2014] [Indexed: 06/04/2023]
Abstract
In this work, we explore the spin ice model under uniaxial pressure using the Monte Carlo simulation method. For the known spin ices, the interaction correction (δ) introduced by the uniaxial pressure varies in quite a wide range from positive to negative. When δ is positive, the ground state characterized by the ferromagnetic spin chains is quite unstable, and in real materials it serves as intermediate state connecting the ice state and the long range ordered dipolar spin ice ground state. In the case of negative δ, the system relaxes from highly degenerate ice state to ordered ferromagnetic state via a first order phase transition. Furthermore, the domain walls in such ferromagnetic state are the hotbed of the excitations of magnetic monopoles, thus indicating that the uniaxial pressure can greatly increase the monopole density.
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Affiliation(s)
- Y L Xie
- Laboratory of Solid State Microstructures, Nanjing University , Nanjing 210093, China
| | - L Lin
- Department of Physics, Southeast University , Nanjing 211189, China
| | - Z B Yan
- Laboratory of Solid State Microstructures, Nanjing University , Nanjing 210093, China
| | - J-M Liu
- Laboratory of Solid State Microstructures, Nanjing University , Nanjing 210093, China
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Jiang CC, Xie YH, Hu CD, Xie YL, Liu S, Liang LZ, Liu ZM. Note: A new regulation method of stable operation of high power cathode ion source. Rev Sci Instrum 2015; 86:056110. [PMID: 26026571 DOI: 10.1063/1.4921705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The hot cathode ion source will tend to be unstable when operated with high power and long pulse. In order to achieve stable operation, a new regulation method based on the arc power (discharge power) feedback control was designed and tested on the hot cathode ion source test bed with arc discharge and beam extraction. The results show that the new regulation method can achieve stable arc discharge and beam extraction. It verifies the success of feedback control of arc source with arc power.
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Affiliation(s)
- C C Jiang
- Institute of Plasma Physics, Chinese Academy of Sciences, Shushanhu Road 350, Hefei 230031, China
| | - Y H Xie
- Institute of Plasma Physics, Chinese Academy of Sciences, Shushanhu Road 350, Hefei 230031, China
| | - C D Hu
- Institute of Plasma Physics, Chinese Academy of Sciences, Shushanhu Road 350, Hefei 230031, China
| | - Y L Xie
- Institute of Plasma Physics, Chinese Academy of Sciences, Shushanhu Road 350, Hefei 230031, China
| | - S Liu
- Institute of Plasma Physics, Chinese Academy of Sciences, Shushanhu Road 350, Hefei 230031, China
| | - L Z Liang
- Institute of Plasma Physics, Chinese Academy of Sciences, Shushanhu Road 350, Hefei 230031, China
| | - Z M Liu
- Institute of Plasma Physics, Chinese Academy of Sciences, Shushanhu Road 350, Hefei 230031, China
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Liu MF, Du ZZ, Xie YL, Li X, Yan ZB, Liu JM. Unusual ferromagnetism enhancement in ferromagnetically optimal manganite La0.7-yCa0.3+yMn1-yRuyO3 (0≤y<0.3): the role of Mn-Ru t2g super-exchange. Sci Rep 2015; 5:9922. [PMID: 25909460 PMCID: PMC4408983 DOI: 10.1038/srep09922] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [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: 11/18/2014] [Accepted: 03/23/2015] [Indexed: 11/12/2022] Open
Abstract
The eg-orbital double-exchange mechanism as the core of physics of colossal magnetoresistance (CMR) manganites is well known, which usually covers up the role of super-exchange at the t2g-orbitals. The role of the double-exchange mechanism is maximized in La0.7Ca0.3MnO3, leading to the concurrent metal-insulator transition and ferromagnetic transition as well as CMR effect. In this work, by a set of synchronous Ru-substitution and Ca-substitution experiments on La0.7–yCa0.3+yMn1–yRuyO3, we demonstrate that the optimal ferromagnetism in La0.7Ca0.3MnO3 can be further enhanced. It is also found that the metal-insulator transition and magnetic transition can be separately modulated. By well-designed experimental schemes with which the Mn3+-Mn4+ double-exchange is damaged as weakly as possible, it is revealed that this ferromagnetism enhancement is attributed to the Mn-Ru t2g ferromagnetic super-exchange. The present work allows a platform on which the electro-transport and magnetism of rare-earth manganites can be controlled by means of the t2g-orbital physics of strongly correlated transition metal oxides.
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Affiliation(s)
- M F Liu
- Laboratory of Solid State Microstructures and Innovative Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Z Z Du
- Laboratory of Solid State Microstructures and Innovative Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Y L Xie
- Laboratory of Solid State Microstructures and Innovative Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - X Li
- Laboratory of Solid State Microstructures and Innovative Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Z B Yan
- Laboratory of Solid State Microstructures and Innovative Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - J-M Liu
- 1] Laboratory of Solid State Microstructures and Innovative Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China [2] Institute for Advanced Materials and Laboratory of Quantum Engineering and Materials, South China Normal University, Guangzhou 510006, China
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Chen HM, Wang L, Wu XL, Li CW, Xie YL, Liu YH, Liang YZ, Chen XY, Lai XP, Chen JN, Li YC, Su ZR. Determination and Distribution Study of Pogostone in Rat Tissues by Ultra-Fast Liquid Chromatography. TROP J PHARM RES 2015. [DOI: 10.4314/tjpr.v14i2.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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27
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Chu P, Xie YL, Zhang Y, Chen JP, Chen DP, Yan ZB, Liu JM. Real-space anisotropic dielectric response in a multiferroic skyrmion lattice. Sci Rep 2015; 5:8318. [PMID: 25661786 PMCID: PMC4321174 DOI: 10.1038/srep08318] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [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: 11/13/2014] [Accepted: 01/14/2015] [Indexed: 11/09/2022] Open
Abstract
A magnetic skyrmion lattice is a microstructure consisting of hexagonally aligned skyrmions. While a skyrmion as a topologically protected carrier of information promises a number of applications, an easily accessible probe of the skyrmion and skyrmion lattice at mesoscopic scale is of significance. It is known that neutron scattering, Lorentz transmission electron microscopy, and spin-resolved STM as effective probes of skyrmions have been established. In this work, we propose that the spatial contour of dielectric permittivity in a skyrmion lattice with ferromagnetic interaction and in-plane (xy) Dzyaloshinskii-Moriya (DM) interaction can be used to characterize the skyrmion lattice. The phase field and Monte Carlo simulations are employed to develop the one-to-one correspondence between the magnetic skyrmion lattice and dielectric dipole lattice, both exhibiting the hexagonal symmetry. Under excitation of in-plane electric field in the microwave range, the dielectric permittivity shows the dumbbell-like pattern with the axis perpendicular to the electric field, while it is circle-like for the electric field along the z-axis. The dependences of the spatial contour of dielectric permittivity on external magnetic field along the z-axis and dielectric frequency dispersion are discussed.
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Affiliation(s)
- P Chu
- Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Y L Xie
- Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Y Zhang
- Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - J P Chen
- Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - D P Chen
- Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - Z B Yan
- Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China
| | - J-M Liu
- 1] Laboratory of Solid State Microstructures and Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China [2] Institute for Quantum Materials, Hubei Polytechnic University, Huangshi 435000, China
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Li W, Wang B, Xie YL, Huang GH, Liu L. An inexact mixed risk-aversion two-stage stochastic programming model for water resources management under uncertainty. Environ Sci Pollut Res Int 2015; 22:2964-2975. [PMID: 25226833 DOI: 10.1007/s11356-014-3547-7] [Citation(s) in RCA: 5] [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: 06/10/2014] [Accepted: 09/01/2014] [Indexed: 06/03/2023]
Abstract
Uncertainties exist in the water resources system, while traditional two-stage stochastic programming is risk-neutral and compares the random variables (e.g., total benefit) to identify the best decisions. To deal with the risk issues, a risk-aversion inexact two-stage stochastic programming model is developed for water resources management under uncertainty. The model was a hybrid methodology of interval-parameter programming, conditional value-at-risk measure, and a general two-stage stochastic programming framework. The method extends on the traditional two-stage stochastic programming method by enabling uncertainties presented as probability density functions and discrete intervals to be effectively incorporated within the optimization framework. It could not only provide information on the benefits of the allocation plan to the decision makers but also measure the extreme expected loss on the second-stage penalty cost. The developed model was applied to a hypothetical case of water resources management. Results showed that that could help managers generate feasible and balanced risk-aversion allocation plans, and analyze the trade-offs between system stability and economy.
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Affiliation(s)
- W Li
- MOE Key Laboratory of Regional Energy and Environmental Systems Optimization, Resources and Environmental Research Academy, North China Electric Power University, 102206, Beijing, China,
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Li Y, Li W, Wang B, Liu XW, Xie YL, Liu L. An inexact multi-objective programming model for water resources management in industrial parks of Binhai New Area, China. Water Sci Technol 2015; 72:1879-1888. [PMID: 26540551 DOI: 10.2166/wst.2015.413] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In recent years, Binhai New Area of Tianjin has been suffering severe water shortage due to climate change and industrial activities. Integrated and effective water resources management approaches are urgent for the sustainable development of industrial parks in Binhai New Area. However, uncertainties exist in many aspects of the water resources system and are inevitably problematic for water resources planning and policy-making. To address these uncertainties, an interval multiple-objective programming model was developed here to support the long-term planning of industrial water resources management in Binhai New Area, Tianjin, China. The model incorporated both multiple-objective programming and interval linear programming into a general programming framework. The developed model could handle the uncertainties and complexities of the water management system, and also allowed decision makers to adjust fuzzy objective control decision variables to satisfy multiple holistic and interactive objectives. The solutions are useful for planning adjustments of the existing water allocation patterns in Binhai New Area.
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Affiliation(s)
- Y Li
- MOE Key Laboratory of Regional Energy and Environmental Systems Optimization, Resources and Environmental Research Academy, North China Electric Power University, Beijing 102206, China E-mail:
| | - W Li
- MOE Key Laboratory of Regional Energy and Environmental Systems Optimization, Resources and Environmental Research Academy, North China Electric Power University, Beijing 102206, China E-mail:
| | - B Wang
- MOE Key Laboratory of Regional Energy and Environmental Systems Optimization, Resources and Environmental Research Academy, North China Electric Power University, Beijing 102206, China E-mail:
| | - X W Liu
- MOE Key Laboratory of Regional Energy and Environmental Systems Optimization, Resources and Environmental Research Academy, North China Electric Power University, Beijing 102206, China E-mail:
| | - Y L Xie
- School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - L Liu
- Department of Civil and Resource Engineering, Dalhousie University, 1360 Barrington St, Bldg D, Rm D215, P.O. Box 15000, Halifax, NS B3H 4R2, Canada
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30
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Yuan GQ, Xie YL, Tan DC, Li QQ, Lin W. First Report of Leaf Spot Caused by Corynespora cassiicola on Kiwifruit (Actinidia chinensis) in China. Plant Dis 2014; 98:1586. [PMID: 30699817 DOI: 10.1094/pdis-06-14-0604-pdn] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Kiwifruit (Actinidia) is a common fruit cultivated in many countries. Actinidia deliciosa and A. chinensis are two commercially important kiwifruit species. Over 70,000 ha are grown annually in China. In 2012, a leaf spot disease of A. chinensis was observed in several orchards in Leye County (106°34' E, 24°47' N), Guangxi Zhuang Autonomous Region, China. The disease mainly damaged the leaves during the fruit development stage through to the maturity stage. Initially reddish-brown small lesions appeared on the leaves; later, typical symptoms were tan to taupe lesions surrounded by purple brown margins, nearly circular to irregular, 2 to 10 × 2.2 to 15.5 mm in diameter. Some lesions exhibited a concentric pattern. The lesions eventually coalesced, causing extensive leaf necrosis and defoliation. The fungus that sporulated from lesions had the following morphological characteristics: light brown conidiophores with slightly swollen apexes, light brown conidia formed singly or in acropetal chains, straight or curved, cylindrical to oblavate, 52.9 to 240.5 μm long (avg. 138.9 μm) and 5.3 to 13.6 μm wide (avg. 8.4 μm), 5 to 12 distoseptate, with a flat, darkened, and thickened hilum. These morphological characteristics corresponded with that of Corynespora cassiicola (Berk. & Curt.) Wei (1). To isolate the pathogen of the disease, small pieces of symptomatic foliar tissues, including young lesions, typical older lesions, and atypical older lesions with concentric pattern were surface sterilized with 75% ethanol for 30 to 60 s, disinfected in 0.1% HgCl2 for 1 min followed by washing with sterile water, plated on PDA, and incubated at 28°C for 7 to 10 days. Gray to dark gray colonies and conidia of C. cassiicola were observed. To validate the identity of the fungus, the sequence of the ITS region of one of the purified strains, LYCc-1, was determined. DNA was extracted from the isolate that was grown on PDA at 28°C for 4 days, and the ITS region was amplified using the universal primer pair ITS4/ITS5 (2). The double strand consensus sequence was submitted to GenBank (KJ747095) and had 99% nt identity with published sequences of C. cassiicola in GenBank (JN853778, FJ852574, and FJ852587). Pathogenicity tests were carried out on detached leaves in petri dishes in an incubator at 28°C and on whole plants in a glasshouse at 25 ± 3°C. The isolations did not produce enough conidia in pure culture, so mycelial discs were used in pathogenicity tests. For both assays, 60-day-old healthy kiwifruit leaves were inoculated with a 5-mm mycelial disc obtained from the periphery of a 5-day-old C. cassiicola strain (LYCc-1) grown on PDA. The PDA discs were placed on the leaf surface with their mycelial surface down and secured with sterile wet cotton. Controls consisted of leaves that were inoculated with sterile PDA discs. For the detached leaf assay, the leaves were placed on filter paper reaching water saturation in petri dishes, and for the whole plant assays the inoculated leaves were kept moist with intermittent water sprays for 48 h. Four leaves of each plant were inoculated with the isolate in both assays, and experiment was repeated twice. Eight inoculated leaves of the detached leaf assay all showed the first water soaked lesions 36 h after inoculation, followed by extensive leaf rot 72 h after inoculation, and yielded abundant conidia of C. cassiicola. Six out of eight leaves inoculated on whole plants showed the first lesions 5 days after inoculation, whereas control leaves remained healthy. Only C. cassiicola was re-isolated from the lesions in both assays, fulfilling Koch's postulates. This is the first report of leaf spot caused by C. cassiicola on kiwifruit in China. References: (1) M. B. Ellis. Dematiaceous Hyphomycetes. CMI, Kew, Surrey, UK, 1971. (2) T. J. White et al. In: PCR Protocols: A Guide to Methods and Applications. Academic Press, San Diego, 1990.
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Affiliation(s)
- G Q Yuan
- College of Agriculture, Guangxi University, Nanning 530004, China
| | - Y L Xie
- Plant Protection Station of Guangxi, Nanning 530022, China
| | - D C Tan
- Plant Protection Station of Guangxi, Nanning 530022, China
| | - Q Q Li
- College of Agriculture, Guangxi University, Nanning 530004, China
| | - W Lin
- College of Agriculture, Guangxi University, Nanning 530004, China
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31
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Chu P, Chen DP, Wang YL, Xie YL, Yan ZB, Wan JG, Liu JM, Li JY. Kinetics of 90° domain wall motions and high frequency mesoscopic dielectric response in strained ferroelectrics: a phase-field simulation. Sci Rep 2014; 4:5007. [PMID: 24845806 PMCID: PMC4028899 DOI: 10.1038/srep05007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Accepted: 05/01/2014] [Indexed: 11/20/2022] Open
Abstract
The dielectric and ferroelectric behaviors of a ferroelectric are substantially determined by its domain structure and domain wall dynamics at mesoscopic level. A relationship between the domain walls and high frequency mesoscopic dielectric response is highly appreciated for high frequency applications of ferroelectrics. In this work we investigate the low electric field driven motion of 90°-domain walls and the frequency-domain spectrum of dielectric permittivity in normally strained ferroelectric lattice using the phase-field simulations. It is revealed that, the high-frequency dielectric permittivity is spatially inhomogeneous and reaches the highest value on the 90°-domain walls. A tensile strain favors the parallel domains but suppresses the kinetics of the 90° domain wall motion driven by electric field, while the compressive strain results in the opposite behaviors. The physics underlying the wall motions and thus the dielectric response is associated with the long-range elastic energy. The major contribution to the dielectric response is from the polarization fluctuations on the 90°-domain walls, which are more mobile than those inside the domains. The relevance of the simulated results wth recent experiments is discussed.
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Affiliation(s)
- P Chu
- Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
| | - D P Chen
- Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
| | - Y L Wang
- Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
| | - Y L Xie
- Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
| | - Z B Yan
- Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
| | - J G Wan
- Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
| | - J-M Liu
- Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
| | - J Y Li
- Department of Mechanical Engineering, University of Washington, Seattle, WA 98195, USA
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32
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Chen F, Liu J, Fan M, Wei XM, Xie YL, Wang LH, Yang H. Module function and two-way clustering analysis of Epstein-Barr virus-related nasopharyngeal cancer. Genet Mol Res 2014; 13:1823-31. [PMID: 24668670 DOI: 10.4238/2014.march.17.10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
This study sought to identify and characterize the function of genes as diagnostic markers for Epstein-Barr virus (EBV)-related nasopharyngeal cancer (NPC). The gene expression profile of GSE13597 was downloaded from the Gene Expression Omnibus database, which included 28 EBV-related NPC gene expression profile data sets, 25 disease samples, and 3 control samples. Data were pre-processed, and differentially expressed genes were screened using the R language. The co-expression coefficient was calculated to construct a co-expression network using Cytoscape. ClusterONE was used to perform module analysis to find enriched gene families. The BiCAT software was used to perform a two-way clustering analysis of differentially expressed gene expression profiles based on the co-expression networks and to verify the enriched gene families, followed by functional enrichment analysis of these gene families. The MCM gene family was found to be enriched in EBV-related NPC. This gene family is essential for eukaryotic DNA replication. Functional analysis of differentially expressed genes in the co-expression network revealed that the enriched biological processes and pathways were mainly involved in the cell cycle. EBV-related NPC is likely associated mainly with the process of cell reproduction, providing a strong basis for the prevention, diagnosis, and treatment of EBV-related NPC and a direction for targeted chemotherapy.
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Affiliation(s)
- F Chen
- Department of Otorhinolaryngology and Head & Neck Surgery, West China Hospital, Cheng Du, Sichuan, China
| | - J Liu
- Department of Otorhinolaryngology and Head & Neck Surgery, West China Hospital, Cheng Du, Sichuan, China
| | - M Fan
- Department of Otorhinolaryngology and Head & Neck Surgery, Cheng Du No. 7 People's Hospital, Cheng Du, Sichuan, China
| | - X M Wei
- Department of Otorhinolaryngology and Head & Neck Surgery, Chengdu 363 Hospital, Cheng Du, Sichuan, China
| | - Y L Xie
- Department of Otorhinolaryngology and Head & Neck Surgery, Cheng Du No. 7 People's Hospital, Cheng Du, Sichuan, China
| | - L H Wang
- Department of Otorhinolaryngology and Head & Neck Surgery, West China Hospital, Cheng Du, Sichuan, China
| | - H Yang
- Department of Otorhinolaryngology and Head & Neck Surgery, West China Hospital, Cheng Du, Sichuan, China
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Xie YL, Chu P, Wang YL, Chen JP, Yan ZB, Liu JM. Wang-Landau sampling with logarithmic windows for continuous models. Phys Rev E Stat Nonlin Soft Matter Phys 2014; 89:013311. [PMID: 24580364 DOI: 10.1103/physreve.89.013311] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2013] [Indexed: 06/03/2023]
Abstract
We present a modified Wang-Landau sampling (MWLS) for continuous statistical models by partitioning the energy space into a set of windows with logarithmically shrinking width. To demonstrate its necessity and advantages, we apply this sampling to several continuous models, including the two-dimensional square XY spin model, triangular J1-J2 spin model, and Lennard-Jones cluster model. Given a finite number of bins for partitioning the energy space, the conventional Wang-Landau sampling may not generate sufficiently accurate density of states (DOS) around the energy boundaries. However, it is demonstrated that much more accurate DOS can be obtained by this MWLS, and thus a precise evaluation of the thermodynamic behaviors of the continuous models at extreme low temperature (kBT<0.1) becomes accessible. The present algorithm also allows efficient computation besides the highly reliable data sampling.
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Affiliation(s)
- Y L Xie
- Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
| | - P Chu
- Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
| | - Y L Wang
- Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
| | - J P Chen
- Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
| | - Z B Yan
- Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
| | - J-M Liu
- Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
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Xie YL, Huang GH, Li W, Li JB, Li YF. An inexact two-stage stochastic programming model for water resources management in Nansihu Lake Basin, China. J Environ Manage 2013; 127:188-205. [PMID: 23712035 DOI: 10.1016/j.jenvman.2013.04.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 03/29/2013] [Accepted: 04/07/2013] [Indexed: 06/02/2023]
Abstract
In this study, an inexact two-stage water resources management model was developed for multi-regional water resources planning in the Nansihu lake Basin, China. Four planning districts, four water users, and five water sources were considered in the optimization model, with net system benefit, recourse cost, water supply cost, and wastewater treatment cost being analyzed. Methods of interval-parameter programming (IPP) and two-stage stochastic programming (TSP) were incorporated into the model to tackle uncertainties described by both interval values and probability distributions. A number of scenarios corresponding to different river inflow levels were examined, and the results indicated that different inflow levels could lead to different water allocation schemes with varied system benefit and system-failure risk. In general, the developed model can provide an effective linkage between economic benefits and the associated penalties attributed to the violation of predefined policies. The modeling results were valuable for supporting the adjustment or justification of the existing water allocation schemes within a complicated water resources system under uncertainty.
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Affiliation(s)
- Y L Xie
- MOE Key Laboratory of Regional Energy and Environmental Systems Optimization, Resources and Environmental Research Academy, North China Electric Power University, Beijing 102206, China.
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Cui L, Chen LR, Li YP, Huang GH, Li W, Xie YL. An interval-based regret-analysis method for identifying long-term municipal solid waste management policy under uncertainty. J Environ Manage 2011; 92:1484-1494. [PMID: 21288632 DOI: 10.1016/j.jenvman.2010.12.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2010] [Revised: 11/11/2010] [Accepted: 12/11/2010] [Indexed: 05/30/2023]
Abstract
In this study, an interval-based regret-analysis (IBRA) model is developed for supporting long-term planning of municipal solid waste (MSW) management activities in the City of Changchun, the capital of Jilin Province, China. The developed IBRA model incorporates approaches of interval-parameter programming (IPP) and minimax-regret (MMR) analysis within an integer programming framework, such that uncertainties expressed as both interval values and random variables can be reflected. The IBRA can account for economic consequences under all possible scenarios associated with different system costs and risk levels without making assumptions on probabilistic distributions for random variables. A regret matrix with interval elements is generated based on a matrix of interval system costs, such that desired decision alternatives can be identified according to the interval minimax regret (IMMR) criterion. The results indicate that reasonable solutions have been generated. They can help decision makers identify the desired alternatives regarding long-term MSW management with a compromise between minimized system cost and minimized system-failure risk.
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Affiliation(s)
- L Cui
- S-C Energy and Environmental Research Academy, North China Electric Power University, Beijing 102206, China.
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Xie YL, Li YP, Huang GH, Li YF, Chen LR. An inexact chance-constrained programming model for water quality management in Binhai New Area of Tianjin, China. Sci Total Environ 2011; 409:1757-1773. [PMID: 21353690 DOI: 10.1016/j.scitotenv.2011.01.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2010] [Revised: 01/11/2011] [Accepted: 01/19/2011] [Indexed: 05/30/2023]
Abstract
In this study, an inexact-chance-constrained water quality management (ICC-WQM) model is developed for planning regional environmental management under uncertainty. This method is based on an integration of interval linear programming (ILP) and chance-constrained programming (CCP) techniques. ICC-WQM allows uncertainties presented as both probability distributions and interval values to be incorporated within a general optimization framework. Complexities in environmental management systems can be systematically reflected, thus applicability of the modeling process can be highly enhanced. The developed method is applied to planning chemical-industry development in Binhai New Area of Tianjin, China. Interval solutions associated with different risk levels of constraint violation have been obtained. They can be used for generating decision alternatives and thus help decision makers identify desired policies under various system-reliability constraints of water environmental capacity of pollutant. Tradeoffs between system benefits and constraint-violation risks can also be tackled. They are helpful for supporting (a) decision of wastewater discharge and government investment, (b) formulation of local policies regarding water consumption, economic development and industry structure, and (c) analysis of interactions among economic benefits, system reliability and pollutant discharges.
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Affiliation(s)
- Y L Xie
- MOE Key Laboratory of Regional Energy Systems Optimization, S-C Energy and Environmental Research Academy, North China Electric Power University, Beijing 102206, China.
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He Y, Wu T, Wu G, Zheng QJ, Liu YZ, Chen H, Ying JJ, Liu RH, Wang XF, Xie YL, Yan YJ, Dong JK, Li SY, Chen XH. Evidence for competing magnetic and superconducting phases in superconducting Eu 1-x Sr x Fe 2-y Co y As 2 single crystals. J Phys Condens Matter 2010; 22:235701. [PMID: 21393768 DOI: 10.1088/0953-8984/22/23/235701] [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: 05/30/2023]
Abstract
In single crystals of Eu(1-x)Sr(x)Fe(2-y)Co(y)As(2), Co doping suppresses spin-density wave (SDW) ordering and induces a superconducting transition. A resistivity reentrance due to the antiferromagnetic ordering of Eu(2+) spins is observed, indicating the competition between antiferromagnetism (AFM) and superconductivity (SC). It is striking that the resistivity reentrance can be completely suppressed by a small magnetic field due to a field-induced metamagnetic transition from AFM to ferromagnetism (FM). The resistivity reentrance can also be suppressed by the substitution of Eu(2+) ions with nonmagnetic Ba(2+)/Sr(2+) to completely destroy the AFM ordering. These results indicate that the AFM order appears destructive to SC, while FM can coexist with the superconductivity. Further we find that magnon excitation exists in AFM ordering and can be suppressed by an applied field. Coexistence of SC from the FeAs layer and the inner field produced by the ferromagnetic Eu(2+) layer suggest a possible p-wave component in the superconducting order parameter.
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Affiliation(s)
- Y He
- Hefei National Laboratory for Physical Science at Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
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Kurmaev EZ, McLeod JA, Skorikov NA, Finkelstein LD, Moewes A, Korotin MA, Izyumov YA, Xie YL, Wu G, Chen XH. Structural models of FeSe(x). J Phys Condens Matter 2009; 21:435702. [PMID: 21832444 DOI: 10.1088/0953-8984/21/43/435702] [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: 05/31/2023]
Abstract
Two different structural models for non-stoichiometric FeSe(x) are examined and compared with soft x-ray spectroscopy findings for FeSe(x) (x = 0.85, 0.50). A structural model of tetragonal FeSe with excess interstitial Fe gives better agreement with experiment than a structural model of tetragonal FeSe with Se vacancies. This interstitial Fe increases the number of 3d states at the Fermi level. We find evidence that large non-stoichiometric ratios of Fe:Se, such as that of FeSe(0.50), yield clusters of pure Fe in the crystal structure.
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Affiliation(s)
- E Z Kurmaev
- Institute of Metal Physics, Russian Academy of Sciences-Ural Division, 620219 Yekaterinburg, Russia
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Wu G, Xie YL, Chen H, Zhong M, Liu RH, Shi BC, Li QJ, Wang XF, Wu T, Yan YJ, Ying JJ, Chen XH. Superconductivity at 56 K in samarium-doped SrFeAsF. J Phys Condens Matter 2009; 21:142203. [PMID: 21825317 DOI: 10.1088/0953-8984/21/14/142203] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We synthesized the samples Sr(1-x)Sm(x)FFeAs with a ZrCuSiAs-type structure. These samples were characterized by resistivity and susceptibility. It is found that substitution of rare earth metal for alkaline earth metal in this system suppresses the anomaly in resistivity and induces superconductivity. Superconductivity at 56 K in nominal composition Sr(0.5)Sm(0.5)FFeAs is realized, indicating that the superconducting transition temperatures in the iron arsenide fluorides can reach as high as that in oxypnictides with the same structure.
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Affiliation(s)
- G Wu
- Hefei National Laboratory for Physical Science at Microscale, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China. Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
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Wang XF, Wu T, Wu G, Chen H, Xie YL, Ying JJ, Yan YJ, Liu RH, Chen XH. Anisotropy in the electrical resistivity and susceptibility of superconducting BaFe2As2 single crystals. Phys Rev Lett 2009; 102:117005. [PMID: 19392232 DOI: 10.1103/physrevlett.102.117005] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2008] [Indexed: 05/27/2023]
Abstract
We report that sizable single crystals of BaFe2As2 have been grown with the self-flux method. Measurements and anisotropy of intrinsic transport and magnetic properties from high-quality single crystal are first presented. The resistivity anisotropy (rho{c}/rho{ab}) is as large as 150 and independent of temperature. In contrast to the susceptibility behavior observed in polycrystalline samples, no Curie-Weiss behavior is observed, and a linear-T dependent susceptibility occurs from the spin-density-wave transition temperature, (T{s}), to 700 K. This result suggests that strong antiferromagnetic correlations are present well above T{s}. A twofold symmetry of susceptibility in the ab plane indicates a stripelike spin structure as observed by neutron scattering. The resistivity minimum is strongly dependent on the magnetic field, suggesting that the upturn of the resistivity at low temperatures should be related to spin fluctuation.
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Affiliation(s)
- X F Wang
- Hefei National Laboratory for Physical Science at Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
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41
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Chen H, Wu T, Xie YL, Liu RH, Wu G, Wang XF, Chen XH. Magnetotransport properties in K(0.50)CoO(2) single crystals. J Phys Condens Matter 2009; 21:016004. [PMID: 21817241 DOI: 10.1088/0953-8984/21/1/016004] [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: 05/31/2023]
Abstract
We have measured susceptibility and angle-dependent magnetoresistance (AMR) on K(0.50)CoO(2) single crystals. A possible magnetic structure similar to that of Na(0.5)CoO(2), a G-type anti-ferromagnetic (AF) structure (both in-plane and inter-plane are AF), is proposed. At ∼20 K, a loop is observed between zero-field-cooled (ZFC) and field-cooled (FC) susceptibility. The absolute value of magnetoresistance (MR) at 20 K is much larger than other cases with H applied within the ab plane. This could arise from the magnetic field being applied in the ab plane, leading to spin-flop of the small magnetic moment of Co(3.5-δ) sites at 20 K to form in-plane ferromagnetic ordering, as observed in Na(0.52)CoO(2).
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Affiliation(s)
- H Chen
- Hefei National Laboratory for Physical Science at Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
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Liu RH, Wu G, Wu T, Fang DF, Chen H, Li SY, Liu K, Xie YL, Wang XF, Yang RL, Ding L, He C, Feng DL, Chen XH. Anomalous transport properties and phase diagram of the FeAs-based SmFeAsO1-xFx superconductors. Phys Rev Lett 2008; 101:087001. [PMID: 18764649 DOI: 10.1103/physrevlett.101.087001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2008] [Indexed: 05/26/2023]
Abstract
We report the detailed phase diagram and anomalous transport properties of Fe-based high-T_{c} superconductors SmFeAsO1-xFx. It is found that superconductivity emerges at x approximately 0.07, and optimal doping takes place in the x approximately 0.20 sample with the highest T_{c} approximately 54 K. T_{c} increases monotonically with doping; the anomaly in resistivity from structural phase or spin-density-wave order is rapidly suppressed, suggesting a quantum critical point around x approximately 0.14. As manifestations, a linear temperature dependence of the resistivity shows up at high temperatures in the x<0.14 regime but at low temperatures just above T_{c} in the x>0.14 regime; a drop in carrier density evidenced by a pronounced rise in the Hall coefficient is observed below the temperature of the anomaly peak in resistivity. A scaling behavior is observed between the Hall angle and temperature: cottheta_{H} proportional, variantT;{1.5} for all samples with different x in SmFeAsO1-xFx system.
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Affiliation(s)
- R H Liu
- Hefei National Laboratory for Physical Science at Microscale and Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
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Gao JX, Ma BL, Xie YL, Huang DS. Electron microscopic appearance of the chronic Campylobacter jejuni enteritis of mice. Chin Med J (Engl) 1991; 104:1005-10. [PMID: 1782809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Campylobacter jejuni is a major cause of human enteritis which mimics the inflammatory bowel disease (IBD). In this study, microstructural changes on the surfaces of the murine gastrointestinal tract persistently colonized by Campylobacter jejuni, strain GJ-S131, were investigated by using scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results revealed that the appearance of the gastrointestinal mucosa in both BALB/C and KM mice resembled that in human with inflammatory bowel disease. Under SEM, the mucosa of the jejunum and ileum, with broken or distorted villi had a "worm eaten" look; crypts were irregular in shape and size, and the mucosa showed atrophy, especially in the colon. Epithelial junctions demonstrated furrows, clefts or deep crevasses, with exudates containing a large number of leukocytes. Cytologic appearances were characterized by microvilli dysplasia and/or atrophy, patchy erosions or necrosis and pelade-like appearance due to absence of microvilli, which were similar to the findings under TEM.
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Affiliation(s)
- J X Gao
- Shanghai Institute of Immunology, Shanghai Second Medical University
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Xie YL, Chen ZH, Cui DF, Pan SH, Deng DQ, Zhou YL, Lu HB, Huang Y, Feng SM, Yang GZ. Optical second-order susceptibility of GaAs/AlxGa1-xAs asymmetric coupled-quantum-well structures in the exciton region. Phys Rev B Condens Matter 1991; 43:12477-12479. [PMID: 9997047 DOI: 10.1103/physrevb.43.12477] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Gao JX, Ma BL, Wang WC, Xie YL, Yu H. A mouse model of chronic Campylobacter jejuni infection. Post-infection nephritis. Chin Med J (Engl) 1988; 101:623-30. [PMID: 3148404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
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