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Li CC, Li XM, Xu YH, Li MY, Wang CP. [Analysis of the burden of disease attributable to high temperature exposure in China and globally from 1990 to 2019]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2023; 41:271-276. [PMID: 37248180 DOI: 10.3760/cma.j.cn121094-20220507-00243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Objective: To analyze the burden of disease attributable to high temperature exposure in China and globally from 1990 to 2019, and to study the current burden of disease in relevant populations. Methods: In October 2021, based on data from the global burden of disease 2019 (GBD 2019) study, population attributable fraction (PAF), number of deaths, mortality, disability-adjusted life year (DALY) and DALY rate of Chinese and global populations with different ages and genders in 1990 and 2019 were extracted and analyzed. The rate of change was calculated, the mortality rate was normalized by the age structure of the world standard population, and the causes of disease burden caused by high temperature exposure of Chinese residents were analyzed. Results: In 2019, compared with 1990, the PAF of Chinese and global population decreased by 43.98% and 12.41% respectively, the number of deaths increased by 29.55% and 49.40% respectively, the crude mortality rate increased by 7.81% and 3.30% respectively, the DALY decreased by 48.12% and 14.41% respectively, and the DALY rate decreased by 56.82% and 40.82% respectively. The mortality rate of the ≥70 age group was higher than that of other groups. The disease burden indicators such as PAF, standardized mortality and DALY attributable to high temperature exposure in men were higher than those in women. In 2019, the main cause of DALY affected by high temperature exposure in Chinese population was ischemic heart disease (84400 person-years), and the main cause of death was ischemic heart disease (4900 cases). Conclusion: The burden of diseases attributable to high temperature exposure is still serious in China and the world at large. Targeted interventions should be formulated for men, the elderly and people with occupational exposure, and a sound surveillance system should be established to reduce the burden of diseases caused by high temperature exposure.
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Affiliation(s)
- C C Li
- School of Public Health, Weifang Medical College, Weifang 261053, China Occupational Disease Prevention and Health Monitoring and Evaluation Section, Binzhou Center for Disease Control and Prevention, Binzhou 256600, China
| | - X M Li
- Occupational Disease Prevention and Health Monitoring and Evaluation Section, Binzhou Center for Disease Control and Prevention, Binzhou 256600, China
| | - Y H Xu
- Occupational Disease Prevention and Health Monitoring and Evaluation Section, Binzhou Center for Disease Control and Prevention, Binzhou 256600, China
| | - M Y Li
- Occupational Disease Prevention and Health Monitoring and Evaluation Section, Binzhou Center for Disease Control and Prevention, Binzhou 256600, China
| | - C P Wang
- School of Public Health, Weifang Medical College, Weifang 261053, China
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Li YH, Wang XY, Shen JW, Ma LL, Wang CP, He K, Liu DS, Li YF. Clinical factors affecting the long-term survival of breast cancer patients. J Int Med Res 2023; 51:3000605231164004. [PMID: 36988307 PMCID: PMC10064465 DOI: 10.1177/03000605231164004] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023] Open
Abstract
OBJECTIVE The average 5-year survival rate of breast cancer (BC) patients has been significantly prolonged with new therapeutic methods. However, their effects on BC patient long-term survival rates are unclear. Therefore, this study aimed to analyze the specific clinical factors that can affect BC long-term survival. METHODS Here, we conducted a retrospective study and analyzed long-term survival using data of 3,240 BC patients from 1977 to 2005 from the Genotype-Tissue Expression (GTEx) database using the Kaplan-Meier method. RESULTS Breast tumor size and stage were negatively correlated with long-term survival, but age showed no significant correlation. Estrogen receptor (ER) and progesterone receptor (PR) expression were each positively correlated with patient survival time, while ERBB2 receptor (HER2) expression was negatively correlated with survival time. Patients with high Nottingham prognostic index (NPI) values did not benefit from available therapies. Furthermore, breast-conserving surgery is more conducive to BC patient long-term survival than mastectomy. CONCLUSIONS Early detection and breast-conserving surgery may support long-term survival for BC patients. Elevated expression of ER and PR were both associated with longer patient survival time, while positive expression of HER2 showed the opposite trend. The long-term survival rates of patients with high NPI values can potentially be increased.
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Affiliation(s)
- Yong-Hui Li
- Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai, China
- Luoyang Normal University, Henan, China
| | - Xiao-Ying Wang
- Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jun-Wei Shen
- Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai, China
| | - Lin-Lin Ma
- Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai, China
| | - Cui-Ping Wang
- Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai, China
| | - Kai He
- Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Ding-Sheng Liu
- Shanghai Pudong New Area Gongli Hospital, Shanghai, China
| | - Yan-Fei Li
- Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai, China
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Mungia R, Mexquitic M, Case K, Atique M, Jones B, MacCarthy D, Wang CP. Implementation of a youth and young adult e-cigarette cessation program within a dental clinic setting : A SToHN feasibility study. Tex Dent J 2022; 139:542-554. [PMID: 36644550 PMCID: PMC9838552] [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: 01/17/2023]
Abstract
Introduction While significant progress has been made to decrease tobacco smoking among youth and young adults, e-cigarettes threaten to reverse the progress. The purpose of this study was to test the feasibility of the ReACH Assessment of Knowledge for E-Cigarettes (RAKE) e-cigarette cessation program targeting youth and young adults in Texas. Methods Seven dental practitioners and 12 patients participated in this pilot study. Patients aged 15 to 29 who reported current e-cigarette use were recruited by their dental practitioner. All participants completed pre-and post-assessments-practitioners receiving the RAKE training and patients the RAKE cessation intervention. Descriptive statistics were calculated. Results After RAKE training, all practitioners reported the RAKE cessation program as useful and an important part of patient care. In addition, after completing the program (5A's), 67% (n=9) patients reported that the program was helpful, and 100% (n=12) would recommend the program to other ENDS users. Conclusions Practitioners and patients enhanced their knowledge of e-cigarettes and their harm to health. In addition, practitioners demonstrated their ability to implement the RAKE cessation program within the practice, and patients approved of the use of the program. This study illustrated the feasibility and acceptability of conducting an e-cigarette cessation study in dental practices and a critical need to develop and disseminate the program to young patients.
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Affiliation(s)
- R Mungia
- South Texas Oral Health Network, 8403 Floyd Curl Drive, MSC 7728, San Antonio, TX 78229; Department of Periodontics, University of Texas Health Science Center at San Antonio, 8403 Floyd Curl Drive, MSC 7728, San Antonio, TX 78229
| | - M Mexquitic
- South Texas Oral Health Network, 8403 Floyd Curl Drive, MSC 7728, San Antonio, TX 78240; Institute for Integration of Medicine & Science, University of Texas Health Science Center at San Antonio, 8403 Floyd Curl Drive, MSC 7728, San Antonio, TX 78229
| | - K Case
- Center for Research to Advance Community Health, University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229
| | - M Atique
- Atique Orthodontics, 2770 E Evans Rd. #103, San Antonio, TX, 78259
| | - B Jones
- San Antonio Council on Alcohol and Drug Awareness, 7500 Hwy 90 West, Suite 201, San Antonio, TX, 78227
| | - D MacCarthy
- University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229
| | - CP Wang
- University of Texas Health Science Center at San Antonio, 7703 Floyd Curl Drive, San Antonio, TX 78229
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Yu YZ, Mu Q, Ren Q, Xie LJ, Wang QT, Wang CP. miR-381-3p suppresses breast cancer progression by inhibition of epithelial-mesenchymal transition. World J Surg Oncol 2021; 19:230. [PMID: 34362391 PMCID: PMC8348871 DOI: 10.1186/s12957-021-02344-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 07/23/2021] [Indexed: 12/13/2022] Open
Abstract
Background Accumulating evidence indicates that miRNAs are involved in multiple cellular functions and participate in various cancer development and progression, including breast cancer. Methods We aimed to investigate the role of miR-381-3p in breast cancer. The expression level of miR-381-3p and EMT transcription factors was examined by quantitative real-time PCR (qRT-PCR). The effects of miR-381-3p on breast cancer proliferation and invasion were determined by Cell Counting Kit-8 (CCK-8), colony formation, and transwell assays. The regulation of miR-381-3p on its targets was determined by dual-luciferase analysis, qRT-PCR, and western blot. Results We found that the expression of miR-381-3p was significantly decreased in breast cancer tissues and cell lines. Overexpression of miR-381-3p inhibited breast cancer proliferation and invasion, whereas knockdown of miR-381-3p promoted cell proliferation and invasion in MDA-MB-231 and SKBR3 cells. Mechanistically, overexpression of miR-381-3p inhibited breast cancer epithelial–mesenchymal transition (EMT). Both Sox4 and Twist1 were confirmed as targets of miR-381-3p. Moreover, transforming growth factor-β (TGF-β) could reverse the effects of miR-381-3p on breast cancer progression. Conclusions Our observation suggests that miR-381-3p inhibits breast cancer progression and EMT by regulating the TGF-β signaling via targeting Sox4 and Twist1.
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Affiliation(s)
- Yong-Zheng Yu
- The First Department of Breast Surgery, Affiliated Qingdao Central Hospital, Qingdao University, Qingdao, 266042, China
| | - Qiang Mu
- The First Department of Breast Surgery, Affiliated Qingdao Central Hospital, Qingdao University, Qingdao, 266042, China
| | - Qian Ren
- The First Department of Breast Surgery, Affiliated Qingdao Central Hospital, Qingdao University, Qingdao, 266042, China
| | - Li-Juan Xie
- Department of Ophthalmology, Qingdao Women and Children's Hospital, Qingdao University, Qingdao, 266034, China
| | - Qi-Tang Wang
- The First Department of Breast Surgery, Affiliated Qingdao Central Hospital, Qingdao University, Qingdao, 266042, China
| | - Cui-Ping Wang
- The First Department of Breast Surgery, Affiliated Qingdao Central Hospital, Qingdao University, Qingdao, 266042, China.
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Qi JY, Wang CR, Liu M, Liu SW, Wang ZW, Wang CP. [Analysis on disease burden of stroke in China and the regions with different sociodemographic index from 1990 to 2017]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:958-964. [PMID: 34445833 DOI: 10.3760/cma.j.cn112150-20201013-01274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To examine the trend of stroke disease burden and its main risk-attributable factors in China and regions with different Socio-Demographic Index (SDI) from 1990 to 2017. Methods: With 2017 Global Burden of Disease (GBD) data, years lived with disability (YLDs), years of life lost (YLLs) and disability-adjusted of life years (DALYs) were applied to describe the disease burden and major risk factors of stroke in China and different SDI regions from 1990 to 2017, and to analyze the changing trend of the disease burden and major risk factors of stroke. Results: From 1990 to 2017, the YLD crude rate, YLL crude rate and DALY crude rate for stroke in China showed an increasing trend and the rate of change was 126.5%, 14.6%, and 24.4%, respectively. In 2017, the YLD crude rate, YLL crude rate and DALY crude rate for stroke in China were 502.6 per 100 000, 2 633.1 per 100 000 and 3 135.7 per 100 000, respectively. Among them, the YLD crude rate, YLL crude rate, and DALY crude rate of stroke were the highest in the ≥70 age group, which were 2 617.2 per 100 000, 16 789.4 per 100 000 and 19 406.6 per 100 000, respectively. The YLD crude rate in male was 475.5 per 100 000, which was slightly lower than that of female (530.9 per 100 000), while the DALY crude rate and YLL crude rate for stroke were 3 657.1 per 100 000 and 3 181.7 per 100 000, respectively, which were significantly higher than that of female (2 591.8 per 100 000 and 2 060.9 per 100 000). Compared with regions with different SDI, the age standardized YLD rate, the age standardized YLL rate, the age standardized DALY rate in China were all at a high level. Among them, the age-standardized YLD rate increased from 286.2 per 100 000 to 374.5 per 100 000, with a rate of change of 30.9%; the age-standardized YLL rate decreased from 3 215.6 per 100 000 to 1 967.8 per 100 000, with a rate of change of -38.8%; the age-standardized DALY rate increased from 3 501.8 per 100 000 to 2 342.3 per 100 000, with a rate of change of -33.1%. The top five risk factors for stroke in China were hypertension, excessive sodium intake, insufficient fruit intake, insufficient cereal intake, and smoking in 1990 and 2017. High Body-Mass Index and Alcohol Use's rankings rose from the 9th and 10th in 1990 to the 6th and 7th in 2017, respectively. Conclusion: The burden of stroke disease in China is at a high level, and hypertension is the primary risk factor.
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Affiliation(s)
- J Y Qi
- School of Public Health, Weifang Medical University, Weifang 261053, China
| | - C R Wang
- Maternal and Child Health Center, Chinese Center for Disease Control and Prevention, Beijing 100081, China
| | - M Liu
- School of Public Health, Weifang Medical University, Weifang 261053, China
| | - S W Liu
- Tobacco Control Office, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Z W Wang
- Department of Neurosurgery, Weifang People's Hospital, Weifang 261000, China
| | - C P Wang
- School of Public Health, Weifang Medical University, Weifang 261053, China
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Wang W, Zhang SL, Liu FF, Fang T, Liu SD, Wang CP, Xing Y, Liu Y, Jin B. Research Progress on Pathological Fibrosis of Sinoatrial Node. Fa Yi Xue Za Zhi 2021; 37:225-232. [PMID: 34142485 DOI: 10.12116/j.issn.1004-5619.2020.400820] [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: 08/24/2020] [Indexed: 11/30/2022]
Abstract
Abstract Human heart rhythm is mainly regulated and controlled by the sinoatrial node. Fibrosis plays an important regulating role in adjusting the structural and functional integrity of the sinoatrial node pacemaker complex. In physiological state, the fibrosis degree of sinoatrial node is negatively correlated with heart rate, positively correlated with age and heart size, and can maintain a relatively stable heart rate. Pathological fibrosis of sinoatrial node can induce various types of arrhythmias which can result in sudden death. Determination of the mechanisms related to sinoatrial node pathological fibrosis could provide a target for clinical treatment of sinoatrial node fibrosis and diagnosis basis for forensic pathologists. This paper reviews the main mechanism of sinoatrial node pathological fibrosis, including abnormal activation of cardiac fibroblast cells in sinoatrial node, hyperplasia of epicardial adipose tissue, calcium clock disorder, artery stenosis, etc., introduces the test methods, diagnostic criteria as well as its role in sudden cardiac death and discusses the potential application, to provide reference for relevant research and application.
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Affiliation(s)
- W Wang
- Department of Forensic Medicine, North Sichuan Medical College, Nanchong 637000, Sichuan Province, China
| | - S L Zhang
- Department of Forensic Medicine, North Sichuan Medical College, Nanchong 637000, Sichuan Province, China
| | - F F Liu
- Department of Forensic Medicine, North Sichuan Medical College, Nanchong 637000, Sichuan Province, China
| | - T Fang
- Department of Forensic Medicine, North Sichuan Medical College, Nanchong 637000, Sichuan Province, China
| | - S D Liu
- Department of Forensic Medicine, North Sichuan Medical College, Nanchong 637000, Sichuan Province, China
| | - C P Wang
- Shehong Public Security Bureau, Shehong 629200, Sichuan Province, China
| | - Y Xing
- Department of Forensic Medicine, Chongqing Medical University, Chongqing 400016, China
| | - Y Liu
- Department of Forensic Medicine, North Sichuan Medical College, Nanchong 637000, Sichuan Province, China
| | - B Jin
- Department of Forensic Medicine, North Sichuan Medical College, Nanchong 637000, Sichuan Province, China
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Wang CP, Yu YZ, Zhao H, Xie LJ, Wang QT, Wang Y, Mu Q. MicroRNA‑454‑5p promotes breast cancer progression by inducing epithelial‑mesenchymal transition via targeting the FoxJ2/E‑cadherin axis. Oncol Rep 2021; 46:127. [PMID: 33982790 DOI: 10.3892/or.2021.8078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 03/03/2021] [Indexed: 11/05/2022] Open
Abstract
MicroRNAs are important for the regulation of multiple cellular functions and are involved in the initiation and progression of various types of cancer, including breast cancer. Although microRNA (miR)‑454‑3p is reported to function as an oncogene in several types of human cancer, the role of miR‑454‑5p in breast cancer remains unknown. The present study demonstrated that miR‑454‑5p was upregulated in breast cancer and was associated with a poor prognosis in patients with breast cancer. Overexpression of miR‑454‑5p promoted breast cancer cell viability, migration and invasion in vitro, whereas silencing of miR‑454‑5p inhibited breast cancer proliferation, migration and invasion in vitro and suppressed tumor growth in vivo. Mechanistically, forkhead box J2 (FoxJ2) was shown to be a target of miR‑454‑5p and transactivated E‑cadherin expression. Moreover, silencing of miR‑454‑5p reversed the epithelial‑mesenchymal transition phenotype through upregulation of the FoxJ2/E‑cadherin axis. Collectively, the present findings suggested that miR‑454‑5p may serve as a novel therapeutic target and prognostic predictor for patients with breast cancer.
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Affiliation(s)
- Cui-Ping Wang
- The First Department of Breast Surgery, Qingdao Central Hospital, The Second Affiliated Hospital of Medical College of Qingdao University, Qingdao, Shandong 266042, P.R. China
| | - Yong-Zheng Yu
- The First Department of Breast Surgery, Qingdao Central Hospital, The Second Affiliated Hospital of Medical College of Qingdao University, Qingdao, Shandong 266042, P.R. China
| | - Hui Zhao
- The First Department of Breast Surgery, Qingdao Central Hospital, The Second Affiliated Hospital of Medical College of Qingdao University, Qingdao, Shandong 266042, P.R. China
| | - Li-Juan Xie
- Department of Ophthalmology, Qingdao Women and Children's Hospital, Qingdao University, Qingdao, Shandong 266034, P.R. China
| | - Qi-Tang Wang
- The First Department of Breast Surgery, Qingdao Central Hospital, The Second Affiliated Hospital of Medical College of Qingdao University, Qingdao, Shandong 266042, P.R. China
| | - Ye Wang
- Clinical Laboratory, Qingdao Central Hospital, The Second Affiliated Hospital of Medical College of Qingdao University, Qingdao, Shandong 266042, P.R. China
| | - Qiang Mu
- The First Department of Breast Surgery, Qingdao Central Hospital, The Second Affiliated Hospital of Medical College of Qingdao University, Qingdao, Shandong 266042, P.R. China
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Wang CP, Shao HL, Wang P, Liu YL, Wang S, Xue XW, Bi YL, Li J, Huo Z, Feng RE. [The spectrum of pathogens in 187 cases of pulmonary fungal disease diagnosed by histopathology-a retrospective analysis]. Zhonghua Jie He He Hu Xi Za Zhi 2021; 44:28-31. [PMID: 33412621 DOI: 10.3760/cma.j.cn112147-20200314-00332] [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 spectrum of pathogens causing lung fungal disease diagnosed by histopathology through histochemical special staining, compared to the fungal culture results, and to further evaluate the diagnostic value of histochemical special staining in pulmonary fungal disease. Methods: We performed a retrospective analysis of 187 cases of pulmonary fungal disease diagnosed by histopathology in Peking Union Medical College Hospital from 2001 to 2015 (including 92 cases with pulmonary resection or open lung biopsy, 33 with percutaneous lung biopsy and 62 ones with fiberoptic bronchoscopic lung biopsy). All cases were treated with hexamine silver, PAS, mucus carmine and acid-fast staining in addition to conventional HE staining. The clinical records and the fungal culture results were reviewed. Results: There were 103 male and 84 female patients, aged from 12 to 70 years [average (48±14) years]. There were 85 cases(45.5%) of pulmonary aspergillosis(including 60 cases of invasive infection and 25 cases of aspergilloma), 51 cases(27.3%) of pulmonary cryptococosis, 6 cases (3.2%)of pulmonary mucormycosis, 3 cases(1.6%) of pulmonary histoplasmosis, 3 cases (1.6%)of pulmonary candidiasis, and 2 cases (1.1%) of pneumocystosis, while in the remaining 37 cases (19.8%) the pathogens could not be clearly classified by microscopy due to limited tissue or degeneration. Among the 88 patients with pulmonary fungal disease diagnosed by histopathology from 2011 to 2015, 35 ones (39.9%) were detected by fungal culture (including lung biopsy, intraoperative swab, blood, bronchoalveolar lavage fluid and sputum, etc.). The diagnostic results of 18 cases were completely consistent between histopathological examination and fungal culture (18/35, 51.4%), while 13 cases (13/35, 37.1%) were diagnosed by histopathology but no fungi were cultured, and in 3 cases (3/35,8.6%) the culture was positive for fungi which could not be classified clearly by histopathology. In another case the pathogen was found to be Cryptococcus histopathologically but the lavage culture grew"candida", but the patient's blood cryptococcal antigen was positive. Conclusions: Among patients with histopathological diagnosis of pulmonary fungal disease, pulmonary aspergillosis was the most common, followed by pulmonary cryptococcosis, pulmonary mucormycosis, pulmonary histoplasmosis, pulmonary candidiasis and pneumocystosis. A small number of cases could not be classified by histopathology through histochemical special staining. There was a high consistency in discovering fungal pathogens between pathological histochemical special staining and culture method, but 37% pulmonary fungal disease diagnosed by histopathology were culture negative. In practice, the role of histochemical special staining in diagnosing pulmonary fungal disease should be paid more attention.
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Affiliation(s)
- C P Wang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - H L Shao
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - P Wang
- Department of Clinical Lab,Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College,Beijing 100730,China
| | - Y L Liu
- Department of Clinical Lab,Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College,Beijing 100730,China
| | - S Wang
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - X W Xue
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Y L Bi
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - J Li
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Z Huo
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - R E Feng
- Department of Pathology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
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Wang CR, Meng XF, Wang CP, Liu SW. [Trends of burden on ischemic heart disease and epidemiological transition of related risk factors in China, 1990-2017]. Zhonghua Liu Xing Bing Xue Za Zhi 2020; 41:1703-1709. [PMID: 33297630 DOI: 10.3760/cma.j.cn112338-20191018-00743] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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 examine the trend of burden on ischemic heart disease (IHD) and epidemiological transition on related risk factors among the Chinese population from 1990 to 2017. Methods: Based on open access data from the Global Burden of Disease (GBD) 2017 Study, we used years of life lost (YLD), years lived with disability (YLL), and disability-adjusted of life years (DALY) to describe the changes of IHD burden stratified by different sex and age groups from 1990 to 2017. We applied population-attributable faction (PAF) to analyze the burden attributable to risk factors and epidemiological transition. Results: In 2017, rates on YLD, YLL, and DALY for IHD were 74.2/100 000, 2 459.6/100 000, and 2 523.1/100 000, respectively. DALY rate and YLL rate for IHD in males were invariably higher than those in females except for YLD rate in females. 24 modifiable risk factors were causally associated with IHD. The top five risk factors that influencing DALYs, PAF, and DALY rate in 2017 appeared as: high blood pressure (16.429 million person years, 54.6%, 1 163.1/100 000), high LDL cholesterol (13 941 million person years, 46.3%, 987.0/100 000), diet high in sodium (10.900 million person years, 36.2%, 771.1/100 000), smoking (8.647 million person years, 28.7%, 612.2/100 000), and low-nut diet (7.452 million person years, 24.8%, 527.6/100 000). DALY rate for IHD showed an increase of 90.9%, from 1 116.4/100 000 in 1990 to 2 131.0/100 000 in 2017. Compared with 1990, the YLD rate experienced an evident increase in those aged 15-49 and over 70, in 2017. Annual average growth rate of YLD rate was higher in the ≥70 age group, between 2007 and 2017 (0.4%) than that between 1990 and 2007 (0.2%). The annual average increasing rates of both YLL and DALY were much lower from 2007 to 2017 (0.6%, 0.6%) than those from 1990 to 2007 (1.3%, 1.2%). From 1990 to 2017, DALYs attributed to meaty food (929.7%), beverages with high sugar content (822.7%), and high body-mass index (327.3%) experienced the highest increase. The largest increase in PAF occurred for beverages with high sugar content (400.0%). DALY rates increased for the 8 risk factors whereas decreased on the 7 risk factors, in consecutive rankings between 2007 and 2017. Conclusions: Despite the fact that burden on IHD-caused premature death had been reducing, related disabilities remain challenging with IHD the leading cause of burden, particularly in the ≥70 year-olds. Higher IHD burden from premature death was seen in males but disability appeared higher in females. It is significantly important to strengthen programs on prevention and control for hypertension including reducing modifiable risk factors such as smoking, unreasonable diet habits.
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Affiliation(s)
- C R Wang
- National Center for Women and Children's Health, Chinese Center for Disease Control and Prevention, Beijing 100081, China
| | - X F Meng
- Weifang Municipal Center for Disease Control and Prevention, Weifang 261061, China
| | - C P Wang
- School of Public Health, Weifang Medical University, Social Health Risk Collaborative Innovation Center, "Healthy Shandong" Collaborative Innovation Center for Prediction and Governance of Major Social Risks, Weifang 261053, China
| | - S W Liu
- National Center for Chronic and Non-communicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing 100050, China; Tobacco Control Office, Chinese Center for Disease Control and Prevention, Beijing 100050, China
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Lu Y, Chen R, Ma JY, Wang LP, Qiu LL, Wang CP, Yan JC, Liu PJ. [Platelet derived growth factor-BB regulates phenotype transformation of pulmonary artery smooth muscle cells via SIRT3 affecting glycolytic pathway]. Zhonghua Xin Xue Guan Bing Za Zhi 2020; 47:993-999. [PMID: 31877596 DOI: 10.3760/cma.j.issn.0253-3758.2019.12.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate whether platelet-derived growth factor-BB (PDGF-BB) can regulate phenotypic transformation of pulmonary artery smooth muscle cells (PASMCs) via SIRT3 affecting glycolytic pathway. Methods: The PASMCs were isolated from Sprague Dawley rats. PASMCs were divided into 3 groups by using 2-deoxyglucose (2-DG), an inhibitor of the glycolytic pathway: normal control group, PDGF-BB group(30 ng/ml) and PDGF-BB (30 ng/ml)+2-DG (10 mmol/L) group. In lentivirus-mediated overexpression assay, cells were divided into control group, PDGF-BB group(30 ng/ml), PDGF-BB+deacetylase sirtuin-3 (SIRT3) overexpression group and PDGF-BB+empty vector group. The expression levels of phenotype related index such as α-smooth muscle actin (α-SMA), smooth muscle myosin heavy chain (SM-MHC), calponin, vimentin were detected by qRT-PCR and Western blot. Meanwhile, the expression of α-SMA was detected by cellular immunofluorescence staining. EDU staining was used to detect the proliferation of PASMCs. The expression of SIRT3 was detected by Western blot. The expressions of glucose transporter 1 and aerobic glycolytic enzymes were detected by qRT-PCR and Western blot in lentivirus-mediated overexpression assay. Results: (1) PDGF-BB affects PASMCs phenotypic transformation through glycolytic pathway: compared with normal control group, PDGF-BB significantly decreased the expressions of contractile phenotype markers such as α-SMA, SM-MHC, calponin mRNA and protein (all P<0.05), but it increased the expressions of the synthetic phenotype marker vimentin mRNA and protein (both P<0.05). Cellular immunofluorescence assay showed that PDGF-BB significantly decreased the number of α-SMA positive cells, while 2-DG reversed the process. (2) PDGF-BB promoted cell proliferation through glycolytic pathway: the proliferation of PASMCs was significantly higher in PDGF-BB group than in control group (P<0.05), and which could be significantly reduced by 2-DG (P<0.05). (3) PDGF-BB inhibited the expression of SIRT3 protein in PASMCs: the expression of SIRT3 protein in PDGF-BB group was lower than that in control group (P<0.05). (4) PDGF-BB affected glycolytic pathway through SIRT3:compared with the control group, PDGF-BB significantly increased the expression levels of glucose transporter 1 (Glut1), hexokinase 2 (HK2) and 6-phosphfructo-2-kinase 3 (PFKFB3) mRNA (all P<0.05), which was reserved by over-expression of SIRT3. There were no significant difference in mRNA expression levels between PDGF-BB group and PDGF-BB+empty vector group (P>0.05).Compared with the control group, PDGF-BB significantly increased the expression levels of Glut1, HK2 and PFKFB3 protein(all P<0.05), which was reserved by over-expression of SIRT3. There were no significant differences in protein expression levels between PDGF-BB group and PDGF-BB+empty vector group (all P>0.05). Conclusion: PDGF-BB regulates phenotypic transformation of PASMCs via SIRT3 affecting glycolytic pathway.
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Affiliation(s)
- Y Lu
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang 212001, China
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11
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Espinoza SE, Orsak B, Wang CP, MacCarthy D, Kellogg D, Powers B, Conde A, Moris M, Padala PR, Padala KP. An Individualized Low-Intensity Walking Clinic Leads to Improvement in Frailty Characteristics in Older Veterans. J Frailty Aging 2019; 8:205-209. [PMID: 31637407 DOI: 10.14283/jfa.2019.16] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND Sedentary lifestyle leads to worse health outcomes with aging, including frailty. Older adults can benefit from regular physical activity, but exercise promotion in the clinical setting is challenging. OBJECTIVES The objective of this clinical demonstration project was to implement a Geriatric Walking Clinic for older adults and determine whether this clinical program can lead to improvements in characteristics of frailty. DESIGN This was a clinical demonstration project/quality improvement project. SETTING Outpatient geriatrics clinic at the South Texas Veterans Health Care System (STVHCS). PARTICIPANTS Older Veterans, aged ≥60 years. INTERVENTION A 6-week structured walking program, delivered by a registered nurse and geriatrician. Patients received a pedometer and a comprehensive safety evaluation at an initial face-to-face visit. They were subsequently followed with weekly phone calls and participated in a final face-to-face follow-up visit at 6 weeks. MEASUREMENTS Grip strength (handheld dynamometer), gait speed (10-ft walk), Timed Up and Go (TUG), and body mass index (BMI) were assessed at baseline and follow-up. Frailty status for gait speed was assessed using Fried criteria. RESULTS One hundred eighty five patients completed the program (mean age: 68.4 ±7 years, 88% male). Improvements from baseline to follow-up were observed in average steps/day, gait speed, TUG, and BMI. Improvement in gait speed (1.13 ±0.20 vs. 1.24 ± 0.23 meter/second, p<0.0001) resulted in reduced odds of meeting frailty criteria for slow gait at follow-up compared to the baseline examination (odds ratio = 0.31, 95% confidence interval: 0.13-0.72, p = 0.01). CONCLUSIONS Our findings demonstrate that a short duration, low-intensity walking intervention improves gait speed and TUG. This new clinical model may be useful for the promotion of physical activity, and for the prevention or amelioration of frailty characteristics in older adults.
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Affiliation(s)
- S E Espinoza
- Sara Espinoza, MD, 7703 Floyd Curl Drive, Mail Code 7875, San Antonio, TX 78223, Telephone: 210-617-5197, E-mail: , FAX: 210-949-3060
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Zhu J, Wang CP, Wu JL, Wang XW, Duan QH. [Left lung inferior lobe adenocarcinoma with metastatic right middle lobe thoracic papillary carcinoma and right inferior lobe hamartoma: report of a case]. Zhonghua Bing Li Xue Za Zhi 2019; 48:251-253. [PMID: 30831657 DOI: 10.3760/cma.j.issn.0529-5807.2019.03.018] [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)
- J Zhu
- Department of Respiratory Medicine, Chengde Center Hospital, Hebei Province, Chengde 067000, China
| | - C P Wang
- Department of Cardio-Thoracic Surgery, Chengde Center Hospital, Hebei Province, Chengde 067000, China
| | - J L Wu
- Department of Pathology, Chengde Center Hospital, Hebei Province, Chengde 067000, China
| | - X W Wang
- Department of Pathology, Chengde Center Hospital, Hebei Province, Chengde 067000, China
| | - Q H Duan
- Department of Pathology, Chengde Center Hospital, Hebei Province, Chengde 067000, China
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Chen Y, Yan JC, Weng JY, Wang ZQ, Wang CP, Shao C. [In vivo and in vitro effects of CD137 stimulation on vascular calcification in high fat diet fed ApoE -/- mice]. Zhonghua Xin Xue Guan Bing Za Zhi 2017; 44:879-884. [PMID: 27903375 DOI: 10.3760/cma.j.issn.0253-3758.2016.10.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effect and related mechanism of CD137 stimulation on aortic atherosclerotic plaque calcification in high fat diet fed ApoE-/- mice and on calcification of vascular smooth muscle cells (VSMCs). Methods: (1) ApoE-/- mice fed with high fat diet were randomly divided into 3 groups: CD137 activated group (treated by 200 μg CD137 agonist i. p. once per week for 6 weeks, n=5); CD137 inhibited group (anti-CD137 group: 200 μg anti-CD137 antibody + 200 μg CD137 agonist, i. p., once per week for 6 weeks, n=5) and control group (n=5). Von kossa staining was used to observe the calcification of the aortic plaque and VSMCs. Immunohistochemistry was used to observe the expression of BMP-2 and Runx2 which are known mediators of osteogenic differentiation. (2) The mouse aortic VSMCs were obtained by Patch-attaching method. The calcium content was measured by Methylthymol Blue complexone method. The mRNA expressions of bone morphogenetic protein 2 (BMP-2) and Runx2 were measured by real-time fluorescent quantitative PCR (RT-PCR). The protein levels of BMP-2, Runx2 of the VSMCs were determined by Western blot. Results: (1) In vivo, the plaque calcified area in ApoE-/- mice was significantly larger in CD137-agonist group than that in control group ((1.75±0.33)×104 μm2 vs. (0.23±0.07)×104 μm2,P<0.01), and this effect was significantly reduced by cotreatment with CD137-antagonist ((0.83±0.30)×104 μm2 vs. (1.75 ±0.33)×104 μm2,P<0.05). The levels of BMP-2 and Runx2 were all significantly upregulated in CD137-agonist group than in control group (both P<0.01), again, this effect was blocked by cotreatment with CD137-antagonist (P<0.05). (2) Consistent with the in vivo results, VSMCs calcification was also more serious in CD137-agonist group than in control group, which could be significantly attenuated by cotreatment with CD137-antagonist. In VSMCs, calcium content level in CD137-agonist group was higher than in control group ((0.001 3±0.000 2) mmol/mg protein vs. (0.000 7±0.000 1) mmol/mg protein, P<0.01), which could be significantly reduced by co-treatment with CD137-antagonist ((0.000 9±0.000 2) mmol/mg protein vs. (0.001 3±0.000 2) mmol/mg protein, P<0.01). The mRNA and protein levels of BMP-2 and Runx2 were significantly upregulated in CD137-agonist group compared with the control group (P<0.05), which could be significantly down-regulated by cotreatment with CD-137 antagonist (P<0.05). Conclusion: CD137 activation can promote vascular calcification in high fat diet fed ApoE-/- mice both in vivo and in vitro.
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Affiliation(s)
- Y Chen
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang 212001, China
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Weng JY, Yan JC, Chen Y, Wang ZQ, Wang CP, Shao C. [CD137-CD137L signaling promotes angiogenesis in atherosclerosis plaque of mice through activating nuclear factor of activated T cells c1]. Zhonghua Xin Xue Guan Bing Za Zhi 2017; 44:1040-1046. [PMID: 28056236 DOI: 10.3760/cma.j.issn.0253-3758.2016.12.010] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore whether CD137-CD137L signaling can promote angiogenesis in atherosclerosis plaque via activating nuclear factor of activated T cells c1 (NFATc1). Methods: Apolipoprotein E knock out mice were divided into the following groups: control group (n=5), CD137 activated group(n=5)and CD137 inhibited group (n=5). Immunohistochemistry was performed to detect the expression of CD31 in aortic plaque. Endothelial cells (bEnd.3) were purchased from ATCC and divided into the following groups: control group, IgG isotype control group, CD137 activated group and CD137 inhibited group. Western blot was used to determine total protein and nucleoprotein expression of NFATc1. The expression level of CD137 protein on the surface of endothelial cells was detected by flow cytometry(FCM) and CD137 protein of lysate of endothelial cells was detected by enzyme-linked immunosorbent assay (ELISA). Transwell assay was used to observe the migration ability of endothelial cells.Matrigel tube formation ability of endothelial cells were tested in the following groups: control group, CD137 activated group, silent NFATc1 + CD137 activated group, CD137 inhibited group, and over expressed NFATc1+ CD137 inhibited group. Results: (1) In vivo, the expression level of CD31 was significantly higher in the aortic plaque of CD137 activated group than in control group(1 191±187 vs. 115±30, P<0.05), while which was significantly downregulated in CD137 inhibited group(450±92, P<0.05). (2) The level of nucleoprotein(3.07±0.03 vs. 1.00±0.00, P<0.05) and total protein(2.18±0.30 vs. 1.00±0.00, P<0.05) of NFATc1 were significantly higher in CD137 activated group than in IgG isotype control group. The level of nucleoprotein(0.82±0.04) and total protein(0.84 ± 0.09) of NFATc1 were significantly lower in CD137 inhibited group than in CD137 activated group(both P<0.05). (3) FCM results showed that the fluorescence intensity of CD137 on the cell membrane was significantly higher in endothelial cells stimulated by TNF-α than in normal endothelial cells(5 163±329 vs. 1 660±162, P<0.05). (4) ELISA examination showed that the level of CD137 protein was significantly higher in endothelial cells stimulated by TNF-α than in normal endothelial cells ((573.4±23.7)pg/mg vs.(69.5±16.7)pg/mg, P<0.05). (5) Migration cell number was remarkably higher in CD137 activated group than in IgG isotype control group(1.19±0.13 vs. 1.00±0.00, P<0.05) and significantly lower in CD137 inhibited group(0.82±0.06)than in control group (P<0.05). (6) Values of the formation of the tube length ((5.76±0.18)mm vs. (4.21±0.11)mm, P<0.05) and branch number (29.38±1.28 vs. 21.13±0.96, P<0.05) were both significantly higher in CD137 activated group than in the control group. The formation of the tube length ((1.90±0.11)mm) and branch number(8.91±0.72)were significantly lower in silent NFATc1 + CD137 activated group than in the CD137 activated group (both P<0.05). The formation of the tube length((1.28±0.34)mm) and branch number(5.07±0.35)were also significantly decreased in the CD137 inhibited group compared with the CD137 activated group (both P<0.05). Compared with the CD137 inhibited group, the formation of the tube length((4.82±0.09)mm) and branch number(24.44±1.05) in the over expressed NFATc1+ CD137 inhibited group was increased (both P<0.05). Conclusion: CD137 can promote the angiogenesis in atherosclerosis plaque by activating NFATc1.
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Affiliation(s)
- J Y Weng
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang 212001, China
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Chen AL, Chang FM, Wang CP, Xu H, Wu J, Zuo JE, Wang KJ. [Degradation of the Nitrogenous Heterocyclic Compound Quinoline by O 3/UV]. Huan Jing Ke Xue 2016; 37:3884-3890. [PMID: 29964423 DOI: 10.13227/j.hjkx.2016.10.029] [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: 06/08/2023]
Abstract
The influences of various factors including initial concentration of quionline solution, static duration after reaction, initial pH, HCO3-on the degradation of quinoline by O3/UV were analyzed in this study. In addition, the degradation mechanism and pathways were also analyzed. The results showed that reaction rate constants and removal rate of quinoline decreased with the increase of the initial concentration of quinoline. The best degradation efficiency of quinoline was achieved under the alkaline conditions (pH 7-9). Removal rate of quinoline was obviously influenced by HCO3-, and was reduced by 42.01% within 6 min when the concentration of HCO3- was 100 mg·L-1. There was neglected effect of static duration after reaction on the removal rate and mineralization rate of quinolone. The intermediate products of quinoline were mainly 8-hydroxyquinoline, 5-hydroxyquinoline, 2(1H)-quinoline ketone, 2-pyridinecarboxaldehyde and so on. The main degradation pathways of quinoline in the O3/UV system were addition reaction, substitution reaction and electrophilic substitution mediated by O3 and·OH.
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Affiliation(s)
- Ao-Lei Chen
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
- Department of Chemical and Environmental Engineering, China University of Mining and Technology, Beijing 100083, China
| | - Feng-Min Chang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Cui-Ping Wang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Heng Xu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Jing Wu
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Jian-E Zuo
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
| | - Kai-Jun Wang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China
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Bo L, Weng J, Wang C, Wang Z, Zhong W, Yan J. GW27-e0293 CD137 promotes angiogenesis in atherosclerosis by modulating endothelial Smad1/5-NFATc1 signaling. J Am Coll Cardiol 2016. [DOI: 10.1016/j.jacc.2016.07.044] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Shi Z, Li XF, Bai H, Xu WW, Yang SY, Lu Y, Han JJ, Wang CP, Liu XJ, Li WB. Influence of microstructural features on thermal expansion coefficient in graphene/epoxy composites. Heliyon 2016; 2:e00094. [PMID: 27441268 PMCID: PMC4946080 DOI: 10.1016/j.heliyon.2016.e00094] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2015] [Revised: 02/02/2016] [Accepted: 03/22/2016] [Indexed: 11/23/2022] Open
Abstract
In this paper, theoretical calculations were conducted to determine the coefficient of thermal expansion (CTE) based on the effective medium approach using Green’s function method. The influences of microstructural features were investigated, including volume fraction, aspect ratio, and the orientation of graphene fillers. Calculated results demonstrated strong anisotropy of CTE when all graphene sheets in the composite were aligned in the in-plane direction due to the large difference between the elastic moduli of the graphene and epoxy. The in-plane CTE in the graphene/epoxy composite can be effectively reduced with small additions of graphene additive. Orientation dispersion among the graphene fillers significantly decreases the anisotropy of CTE. Accounting for the influences of all microstructural features, simulation results closely align with current experimental results. This work will provide a general guideline and a solid foundation for the optimal design and preparation of graphene/polymer composites.
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Affiliation(s)
- Zhan Shi
- Department of Materials Science and Engineering, Fujian Key Laboratory of Materials Genome, College of Materials, Xiamen University, Xiamen 361005, PR China
| | - Xiao-Fei Li
- Department of Materials Science and Engineering, Fujian Key Laboratory of Materials Genome, College of Materials, Xiamen University, Xiamen 361005, PR China
| | - Hua Bai
- Department of Materials Science and Engineering, Fujian Key Laboratory of Materials Genome, College of Materials, Xiamen University, Xiamen 361005, PR China
| | - Wei-Wei Xu
- School of Aerospace Engineering, Xiamen University, 361005, PR China
| | - Shui-Yuan Yang
- Department of Materials Science and Engineering, Fujian Key Laboratory of Materials Genome, College of Materials, Xiamen University, Xiamen 361005, PR China
| | - Yong Lu
- Department of Materials Science and Engineering, Fujian Key Laboratory of Materials Genome, College of Materials, Xiamen University, Xiamen 361005, PR China
| | - Jia-Jia Han
- Department of Materials Science and Engineering, Fujian Key Laboratory of Materials Genome, College of Materials, Xiamen University, Xiamen 361005, PR China
| | - Cui-Ping Wang
- Department of Materials Science and Engineering, Fujian Key Laboratory of Materials Genome, College of Materials, Xiamen University, Xiamen 361005, PR China
| | - Xing-Jun Liu
- Department of Materials Science and Engineering, Fujian Key Laboratory of Materials Genome, College of Materials, Xiamen University, Xiamen 361005, PR China
| | - Wei-Bin Li
- School of Aerospace Engineering, Xiamen University, 361005, PR China
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Han JJ, Wang CP, Liu XJ, Wang Y, Liu ZK, Zhang TY, Jiang JZ. Abnormal correlation between phase transformation and cooling rate for pure metals. Sci Rep 2016; 6:22391. [PMID: 26939584 PMCID: PMC4778031 DOI: 10.1038/srep22391] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [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: 08/11/2015] [Accepted: 02/11/2016] [Indexed: 11/09/2022] Open
Abstract
This work aims to achieve deep insight into the phenomenon of phase transformation upon rapid cooling in metal systems and reveal the physical meaning of scatter in the time taken to reach crystallization. The total number of pure metals considered in this work accounts for 14. Taking pure copper as an example, the correlation between phase selection of crystal or glass and cooling rate was investigated using molecular dynamic simulations. The obtained results demonstrate that there exists a cooling rate region of 6.3 × 1011–16.6 × 1011 K/s, in which crystalline fractions largely fluctuate along with cooling rates. Glass transformation in this cooling rate region is determined by atomic structure fluctuation, which is controlled by thermodynamic factors. According to the feature of bond-orientation order at different cooling rates, we propose two mechanisms of glass formation: (i) kinetic retardation of atom rearrangement or structural relaxation at a high cooling rate; and (ii) competition of icosahedral order against crystal order near the critical cooling rate.
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Affiliation(s)
- J J Han
- Fujian Key Laboratory of Materials Genome, College of Materials, Xiamen University, Xiamen 361005, P. R. China
| | - C P Wang
- Fujian Key Laboratory of Materials Genome, College of Materials, Xiamen University, Xiamen 361005, P. R. China
| | - X J Liu
- Fujian Key Laboratory of Materials Genome, College of Materials, Xiamen University, Xiamen 361005, P. R. China.,Collaborative Innovation Center of Chemistry for Energy Materials, Xiamen University, Xiamen 361005, P. R. China
| | - Y Wang
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Z-K Liu
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - T-Y Zhang
- Shanghai University Materials Genome Institute and Shanghai Materials Genome Institute, Shanghai University, 99 Shangda Road, Shanghai 200444, China
| | - J Z Jiang
- International Center for New-Structured Materials (ICNSM), Laboratory of New-Structured Materials, State Key Laboratory of Silicon Materials, and School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
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Zhang Y, Wang C, Lin Q, Gao F, Ma Y, Zhang M, Lin Y, Ma Q, Hua X. Genome-wide analysis of phylogeny, expression profile and sub-cellular localization of SKP1-Like genes in wild tomato. Plant Sci 2015; 238:105-14. [PMID: 26259179 DOI: 10.1016/j.plantsci.2015.06.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [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: 02/28/2015] [Revised: 06/05/2015] [Accepted: 06/07/2015] [Indexed: 05/23/2023]
Abstract
SKP1 is a core component of SCF complex, a major type of E3 ubiquitin ligase catalyzing the last step in ubiquitin-mediated protein degradation pathway. In present study, SKP1 gene family in Solanum pimpinellifolium (SSK), a wild species of tomato, was investigated. A total of 19 SSK genes were identified through homologous search. Their chromosomal locations, gene structures, phylogeny, expression profiles, sub-cellular localizations and protein-protein interaction patterns with putative F-box proteins were analyzed in detail. The high homology and similar expression patterns among clustered SSK genes in chromosome suggested that they may have evolved from duplication events and are functionally redundant. Sub-cellular localization indicated that most of the SSK proteins are distributed in both cytosol and nucleus, except for SSK8, which is detected in cytosol only. Tissue-specific expression patterns suggested that many SSK genes may be involved in tomato fruit development. Furthermore, several SSK genes were found to be responsive to heat stress and salicylic acid treatment. Based on phylogenetic analysis, expression profiles and protein interaction property, we proposed that tomato SSK1 and SSK2 might have similar function to ASK1 and ASK2 in Arabidopsis.
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Affiliation(s)
- YueQin Zhang
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - CuiPing Wang
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; State Key Laboratory of Seedling Bioengineering, Ningxia Forestry Institute, Yinchuan 750004, China
| | - QingFang Lin
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China; University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, China
| | - FengHua Gao
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Yan Ma
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - Min Zhang
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - YueHui Lin
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - QingHu Ma
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China
| | - XueJun Hua
- Key Laboratory of Plant Resources and Beijing Botanical Garden, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China.
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Chang FJ, Yuan HY, Hu XX, Ou ZJ, Fu L, Lin ZB, Wang ZP, Wang SM, Zhou L, Xu YQ, Wang CP, Xu Z, Zhang X, Zhang CX, Ou JS. Corrigendum to ‘High density lipoprotein from patients with valvular heart disease uncouples endothelial nitric oxide synthase’ [J Mol Cell Cardiol 74 (2014) 209–219]. J Mol Cell Cardiol 2015. [DOI: 10.1016/j.yjmcc.2015.02.023] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Chang FJ, Yuan HY, Hu XX, Ou ZJ, Fu L, Lin ZB, Wang ZP, Wang SM, Zhou L, Xu YQ, Wang CP, Xu Z, Zhang X, Zhang CX, Ou JS. High density lipoprotein from patients with valvular heart disease uncouples endothelial nitric oxide synthase. J Mol Cell Cardiol 2014; 74:209-19. [DOI: 10.1016/j.yjmcc.2014.05.015] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Revised: 05/04/2014] [Accepted: 05/21/2014] [Indexed: 11/29/2022]
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Chen TT, Wang CP, Fu HK, Chou PT, Ying SP. Electroluminescence enhancement in InGaN light-emitting diode during the electrical stressing process. Opt Express 2014; 22 Suppl 5:A1328-A1333. [PMID: 25322187 DOI: 10.1364/oe.22.0a1328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This study of the optoelectronic properties of blue light-emitting diodes under direct current stress. It is found that the electroluminescence intensity increases with duration of stress, and the efficiency droop curves illustrated that the peak-efficiency and the peak-efficiency-current increases and decreases, respectively. We hypothesize that these behaviors mainly result from the increased internal quantum efficiency.
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You MP, Lanoiselet V, Wang CP, Barbetti MJ. First Report of Alternaria Leaf Spot Caused by Alternaria tenuissima on Blueberry (Vaccinium corymbosum) in Western Australia. Plant Dis 2014; 98:423. [PMID: 30708426 DOI: 10.1094/pdis-07-13-0737-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
Blueberry (Vaccinium corymbosum) plants in a commercial plantation at Yanchep, Western Australia, in April and May 2013, showed a widespread leaf spotting condition. Leaf lesions were circular to irregular, light brown to gray, 1 to 5 mm in diameter, with distinct dark brownish red borders. A fungus was consistently recovered by plating surface-sterilized (1% NaOCl) sections of symptomatic leaf tissue onto water agar and sub-culturing onto potato dextrose agar (PDA). For conidial production, the fungus was grown on PDA under a 12-h/12-h dark/light photoperiod at 25°C. Fungal colonies had a dark olive color on both sides, with loose, cottony mycelium on the surface of cultures. Isolates showed morphological similarities to Alternaria tenuissima as described in other reports (1,3). Simple conidiophores ranged from 16.3 to 96.6 μm (mean 37.5 μm) and produced numerous conidia in long chains. Conidia ranged from 7.0 to 23.9 μm (mean 13.9 μm) in length and 3.9 to 7.5 μm (mean 5.7 μm) in width, contained two to five transverse septa, but only an occasional longitudinal septum was observed. Using a representative isolate, a PCR-based assay with the ITS1 and ITS4 primers was used to amplify from the 3' end of 16S rRNA, across ITS1, 5.8S rRNA, and ITS2 to the 5' end of the 26S rRNA (4). The DNA products were sequenced and BLAST analyses were used to compare sequences with those in GenBank (2). The sequence had ≥99% nucleotide identity with the corresponding sequence in GenBank (Accession No. KC568287) for A. tenuissima. The relevant information for a representative isolate has been lodged in GenBank (KF408355). A conidial suspension of 2.5 × 105 conidia ml-1 from a single-spore culture was spot inoculated onto 20 leaves, ranging from recently emerged to oldest, of 6-month-old V. corymbosum Nellie Kelly plants maintained at 18/13°C 12-h/12-h day/night and >90% relative humidity for 72 h post inoculation. Symptoms were evident by 18 days post inoculation and by 24 days consisted of pale brown lesions that were mostly 2.1 to 2.5 μm in diameter and with distinct dark brownish red borders. A. tenuissima, showing morphological characteristics identical to those described above, was re-isolated from lesions to fulfill Koch's postulates. No lesions occurred on an equivalent number of leaves of control plants inoculated with only deionized water. A culture of this representative isolate has been lodged in the Western Australian Culture Collection Herbarium maintained at the Department of Agriculture and Food Western Australia (Accession No. WAC13639). A. tenuissima has been reported across Australia on a range of other hosts. However, on V. corymbosum, the pathogen has only previously been recorded in Tasmania (2009). It may also have been the cause of a leaf spotting condition on V. corymbosum recorded in Victoria (1976) and New South Wales (1984), but mistakenly listed with A. alternata as the cause. To the best of our knowledge, this is the first record of A. tenuissima on V. corymbosum in Western Australia. With 10 to 30% of leaves showing disease symptoms widely spread on many V. corymbosum plants in the commercial plantation, this pathogen could potentially adversely affect the future production of blueberries in Western Australia. References: (1) F. L. Caruso and R. C. Ramsdell, eds. Compendium of Blueberry and Cranberry Diseases. American Phytopathological Society, St. Paul, MN, 1995. (2) J. C. Kang et al. Mycol. Res. 106:1151, 2002. (3) E. G. Simmons. Mycotaxon 70:325, 1999. (4) T. J. White et al. Pages 315-322 in: PCR Protocols: A Guide to Methods and Applications. Academic Press, San Diego, 1990.
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Affiliation(s)
- M P You
- School of Plant Biology, Faculty Science, The University of Western Australia, Crawley, WA 6009, Australia
| | - V Lanoiselet
- Department of Agriculture and Food Western Australia, Baron-Hay Court, South Perth, WA 6151, Australia, and School of Plant Biology, Faculty Science, The University of Western Australia, Crawley, WA 6009, Australia
| | - C P Wang
- Department of Agriculture and Food Western Australia, Baron-Hay Court, South Perth, WA 6151, Australia
| | - M J Barbetti
- School of Plant Biology and The UWA Institute of Agriculture, Faculty Science, The University of Western Australia, Crawley, WA 6009, Australia
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Liu X, Lin XJ, Wang CP, Yan KK, Zhao LY, An WX, Liu XD. Association between smoking and p53 mutation in lung cancer: a meta-analysis. Clin Oncol (R Coll Radiol) 2013; 26:18-24. [PMID: 24126199 DOI: 10.1016/j.clon.2013.09.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Revised: 07/09/2013] [Accepted: 09/09/2013] [Indexed: 12/11/2022]
Abstract
AIMS To carry out a meta-analysis on the relationship between smoking and p53 gene mutation in lung cancer patients. MATERIALS AND METHODS PubMed, Web of Science, ProQest and Medline were searched by using the key words: 'lung cancer or lung neoplasm or lung carcinoma', 'p53 mutation' and 'smoking'. According to the selection criteria, 15 articles were identified and methodologically analysed by stata 12.0 software package. Crude odds ratios with 95% confidence intervals calculated using the fixed-effects model were used to assess the strength of association between smoking and p53 mutation in lung cancer. RESULTS In total, 15 articles with 1770 lung cancer patients were identified; 69.6% of the patients were smokers, 30.4% were non-smokers. Overall, smokers with lung cancer had a 2.70-fold (95% confidence interval 2.04-3.59) higher risk for mutation than the non-smokers with lung cancer. In subgroup analyses, the increased risk of p53 mutation in smokers than in non-smokers was found in the non-small cell lung cancer (NSCLC) group (odds ratio = 2.38, 95% confidence interval = 1.71-3.32) and in the NSCLC and SCLC group (odds ratio = 3.82, 95% confidence interval = 2.19-6.69). CONCLUSIONS This meta-analysis strongly suggests that p53 mutation is associated with smoking-induced lung cancer. Smokers with lung cancer had a higher risk for p53 mutation than non-smokers.
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Affiliation(s)
- X Liu
- Epidemiology and Statistics, School of Public Health, Jilin University, Changchun, Jilin, China
| | - X J Lin
- Epidemiology and Statistics, School of Public Health, Jilin University, Changchun, Jilin, China
| | - C P Wang
- School of Mathematics and Statistics, Northeast Normal University, Changchun, Jilin, China
| | - K K Yan
- Epidemiology and Statistics, School of Public Health, Jilin University, Changchun, Jilin, China
| | - L Y Zhao
- Epidemiology and Statistics, School of Public Health, Jilin University, Changchun, Jilin, China
| | - W X An
- Social Medicine, School of Public Health, Jilin University, Changchun, Jilin, China
| | - X D Liu
- Key Laboratory of Radiobiology (Ministry of Health), School of Public Health, Jilin University, Changchun, China.
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Han JJ, Wang CP, Liu XJ, Wang Y, Liu ZK. First-principles calculation of structural, mechanical, magnetic and thermodynamic properties for γ-M23C6 (M = Fe, Cr) compounds. J Phys Condens Matter 2012; 24:505503. [PMID: 23172712 DOI: 10.1088/0953-8984/24/50/505503] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We report the results of our first-principles calculations of structural stability, mechanical, magnetic, and thermodynamic properties for γ-M(23)C(6) (M = Fe, Cr) compounds with each of the four metal Wyckoff sites being occupied in turn by Fe. The thermodynamic properties and the temperature dependence of the mechanical behavior of γ-M(23)C(6) compounds are investigated based on the quasi-harmonic Debye model. The results show that the thermodynamic properties of γ-M(23)C(6) (M = Fe, Cr) compounds are more dependent on the position of Fe atoms than the amount of Fe.
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Affiliation(s)
- J J Han
- Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen 361005, People's Republic of China
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Lanoiselet V, You MP, Li YP, Wang CP, Shivas RG, Barbetti MJ. First Report of Sarocladium oryzae Causing Sheath Rot on Rice (Oryza sativa) in Western Australia. Plant Dis 2012; 96:1382. [PMID: 30727200 DOI: 10.1094/pdis-04-12-0415-pdn] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Rice (Oryza sativa L.) has been grown in the Ord River Irrigation Area (ORIA) in northern Western Australia since 1960. In 2011, a sheath rot of rice was observed in the ORIA. Symptoms were variable, appearing as either (i) oblong pale to dark brown lesions up to 3 cm length, (ii) lesions with pale grey/brown centers and with dark brown margins, or (iii) diffuse dark or reddish brown streaks along the sheath. Lesions enlarged and coalesced, often covering the majority of the leaf sheath, disrupting panicle emergence. Isolations from small pieces of infested tissues from plants showing sheath rot symptoms were made onto water agar, subcultured onto potato dextrose agar, cultures maintained at 20°C, and a representative culture lodged both in the Western Australian Culture Collection maintained at the Department of Agriculture and Food Western Australia (as WAC 13481) and in the culture collection located at the DAFF Plant Pathology Herbarium (as BRIP 54763). Amplification of the internal transcribed spacer (ITS)1 and (ITS)2 regions flanking the 5.8S rRNA gene were carried out with universal primers ITS1 and ITS4 according to the published protocol (4). The DNA PCR products from a single isolate were sequenced and BLAST analyses used to compare sequences with those in GenBank. The sequence had 99% nucleotide identity with the corresponding sequence in GenBank for Sarocladium oryzae (Sawada) W. Gams & D. Hawksworth. Isolates showed morphological (e.g., conidiophore and conidia characteristics) (2) and molecular (1) similarities with S. oryzae as described in other reports. The relevant sequence information for a representative isolate was lodged in GenBank (GenBank Accession No. JQ965668). Spores of S. oryzae were produced on rice agar under "black light" at 22°C to induce sporulation over 4 weeks. Under conditions of 30/28°C (day/night), 14/12 h (light/dark), rice cv. Quest, grown for 11 weeks until plants reached the tillering stage, was inoculated by spraying a suspension 5 × 107 spores/ml of the same single isolate onto foliage until runoff occurred. Inoculated plants were placed under a dark plastic cover for 72 h to maximize humidity levels around leaves and subsequently maintained under >90% relative humidity conditions. Symptoms of sheath rot as described in (i) and (ii) above appeared by 14 days after inoculation, with lesions up to 23 cm long by 15 days post-inoculation. Severe disease prevented young panicles from emerging. Infection studies were successfully repeated and S. oryzae was reisolated from leaf lesions 1 week after lesion appearance. No disease was observed on water-inoculated control rice plants. There have been records of S. oryzae on rice in New South Wales in the early 1980s (3) and in 2006 to 2007 (Australian Plant Pest Database), but to our knowledge, this is the first report of this pathogen in Western Australia. References: (1) N. Ayyadurai et al. Cur. Microbiol. Mycologia 50:319, 2005. (2) B. L. K. Brady. No. 673 in: IMI Descriptions of Fungi and Bacteria, 1980. (3) D. Phillips et al. FAO Plant Prot. Bull. 40:4, 1992. (4) T. J. White et al. Page 315 in: PCR Protocols: A Guide to Methods and Applications. Academic Press, San Diego, CA, 1990.
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Affiliation(s)
- V Lanoiselet
- Department of Agriculture and Food Western Australia, Baron-Hay Court, South Perth, W.A. 6151, Australia and School of Plant Biology, The University of Western Australia, Crawley, W.A. 6009 Australia
| | - M P You
- Department of Agriculture and Food Western Australia, Baron-Hay Court, South Perth, W.A. 6151, Australia and School of Plant Biology, The University of Western Australia, Crawley, W.A. 6009 Australia
| | - Y P Li
- School of Plant Biology, The University of Western Australia, Crawley, W.A. 6009, Australia
| | - C P Wang
- Department of Agriculture and Food Western Australia, Baron-Hay Court, South Perth, W.A. 6151, Australia
| | - R G Shivas
- Plant Biosecurity Science, Department of Agriculture, Fisheries and Forestry, Ecosciences Precinct, Dutton Park 4102, Queensland, Australia
| | - M J Barbetti
- School of Plant Biology and The UWA Institute of Agriculture, The University of Western Australia, Crawley, W.A. 6009, Australia
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You MP, Lanoiselet V, Wang CP, Shivas RG, Li YP, Barbetti MJ. First Report of Rice Blast (Magnaporthe oryzae) on Rice (Oryza sativa) in Western Australia. Plant Dis 2012; 96:1228. [PMID: 30727086 DOI: 10.1094/pdis-05-12-0420-pdn] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Commercial rice crops (Oryza sativa L.) have been recently reintroduced to the Ord River Irrigation Area in northern Western Australia. In early August 2011, unusual leaf spot symptoms were observed by a local rice grower on rice cultivar Quest. A leaf spot symptom initially appeared as grey-green and/or water soaked with a darker green border and then expanded rapidly to several centimeters in length and became light tan in color with a distinct necrotic border. Isolations from typical leaf lesions were made onto water agar, subcultured onto potato dextrose agar, and maintained at 20°C. A representative culture was lodged in the Western Australian Culture Collection Herbarium, Department of Agriculture and Food Western Australia (WAC 13466) and as a herbarium specimen in the Plant Pathology Herbarium, Plant Biosecurity Science (BRIP 54721). Amplification of the internal transcribed spacer (ITS)1 and (ITS)2 regions flanking the 5.8S rRNA gene were carried out with universal primers ITS1 and ITS4 (4). The PCR products were sequenced and BLAST analyses used to compare sequences with those in GenBank. The sequence had 99% nucleotide identity with the corresponding sequence in GenBank for Magnaporthe oryzae B.C. Couch, the causal agent of rice blast, the most important fungal disease of rice worldwide (1). Additional sequencing with the primers Bt1a/Bt1b for the β-tubulin gene, primers ACT-512F/ACT-783R for the actin gene, and primers CAL-228F/CAL-737R for the calmodulin gene showed 100% identity in each case with M. oryzae sequences in GenBank, confirming molecular similarity with other reports, e.g., (1). The relevant sequence information for a representative isolate has been lodged in GenBank (GenBank Accession Nos. JQ911754 for (ITS) 1 and 2; JX014265 for β-tubulin; JX035809 for actin; and JX035808 for calmodulin). Isolates also showed morphological similarity with M. oryzae as described in other reports, e.g., (3). Spores of M. oryzae were produced on rice agar under "black light" at 21°C for 4 weeks. Under 30/28°C (day/night), 14/12 h (light/dark), rice cv. Quest was grown for 7 weeks, and inoculated by spraying a suspension 5 × 105 spores/ml onto foliage until runoff occurred. Inoculated plants were placed under a dark plastic covering for 72 h to maximize humidity levels around leaves, and subsequently maintained under >90% RH conditions. Typical symptoms of rice blast appeared within 14 days of inoculation and were as described above. Infection studies were successfully repeated and M. oryzae was readily reisolated from leaf lesions. No disease symptoms were observed nor was M. oryzae isolated from water-inoculated control rice plants. There have been previous records of rice blast in the Northern Territory (2) and Queensland, Australia (Australian Plant Pest Database), but this is the first report of M. oryzae in Western Australia, where it could potentially be destructive if conditions prove conducive. References: (1) B. C. Couch and L. M. Kohn. Mycologia 94:683, 2002; (2) J. B. Heaton. The Aust. J. Sci. 27:81, 1964; (3) C. V. Subramanian. IMI Descriptions of Fungi and Bacteria No 169, Pyricularia oryzae, 1968; (4) T. J. White et al. PCR Protocols: A Guide to Methods and Applications. M. A. Innis et al., eds. Academic Press, New York, 1990.
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Affiliation(s)
- M P You
- School of Plant Biology, The University of Western Australia, Crawley, W.A. 6009 Australia
| | - V Lanoiselet
- Department of Agriculture and Food Western Australia, Baron-Hay Court, South Perth, W.A. 6151, Australia and School of Plant Biology, The University of Western Australia, Crawley, W.A. 6009 Australia
| | - C P Wang
- Department of Agriculture and Food Western Australia, Baron-Hay Court, South Perth, W.A. 6151, Australia
| | - R G Shivas
- Plant Biosecurity Science, Department of Agriculture, Fisheries and Forestry, Ecosciences Precinct, Dutton Park 4102, Queensland, Australia
| | - Y P Li
- School of Plant Biology and The UWA Institute of Agriculture, The University of Western Australia, Crawley, W.A. 6009, Australia
| | - M J Barbetti
- School of Plant Biology and The UWA Institute of Agriculture, The University of Western Australia, Crawley, W.A. 6009, Australia
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Wang CP, Zeng CC, Guan XY, Zhu ZR, Liu SH. [Effects of indocyanine green on near-infrared optical properties and optical coherence tomographic image of cerebral blood vessel in vivo in rats]. Guang Pu Xue Yu Guang Pu Fen Xi 2012; 32:1766-1770. [PMID: 23016321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The scope of this research lies in the effects of indocyanine green (ICG) on the near-infrared optical properties and optical coherence tomographic image of cerebral blood vessel in vivo in rats. The skulls of SD rats were opened under nembutal anesthesia to expose and mark the middle cerebral artery. The reflectance spectra of middle cerebral artery were monitored by Vis/ NIR spectrometer and the optical attenuation coefficients of middle cerebral artery were detected by optical coherence tomography (OCT) when indocyanine green was administrated intravenously through tail veins. It was shown that the reflectance spectra of middle cerebral artery could provide guidance for OCT image, where characteristic changes appeared around 800 nm, an absorption peak of indocyanine green. Additionally, significant difference (p<0.01) was observed between the optical attenuation coefficients of middle cerebral artery with and without indocyanine green, which were 24.692 +/- 1.471 and 15.088 +/- 1.602, respectively. It was concluded that indocyanine green, as an optical contrast agent to enhance detection of cerebral artery by the reflectance spectra and OCT imaging, has the potential for monitoring and imaging of cerebral blood vessels.
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Affiliation(s)
- Cui-Ping Wang
- Key Laboratory of Laser Life Science of Ministry of Education, College of Biophotonics, South China Normal University, Guangzhou 510631, China.
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Wang CP, Ma S, Yu JL, Yan JB, Zhang ZQ. 2-(4-Fluorophenyl)quinoxaline. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o1779. [PMID: 22719556 PMCID: PMC3379358 DOI: 10.1107/s1600536812017771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2012] [Accepted: 04/21/2012] [Indexed: 11/18/2022]
Abstract
In the title compound, C14H9FN2, the dihedral angle between the benzene ring and the quinoxaline ring system is 22.2 (3)°. Any aromatic π–π stacking in the crystal must be very weak, with a minimum centroid–centroid separation of 3.995 (2) Å.
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Li YP, Wright DG, Lanoiselet V, Wang CP, Eyres N, Real D, You MP, Barbetti MJ. First Report of Phoma herbarum on Tedera (Bituminaria bituminosa var. albomarginata) in Australia. Plant Dis 2012; 96:769. [PMID: 30727547 DOI: 10.1094/pdis-12-11-1040-pdn] [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: 06/09/2023]
Abstract
Tedera (Bituminaria bituminosa (L.) C.H. Stirton var. albomarginata) has been successfully established across the mixed-farming (wheat-sheep) region of Western Australia because this species has remarkable drought tolerance and can survive the dry-summer period with strong retention of green leaf. A leaf spot symptom involving pale brown lesions with distinct dark brown margins had been observed in genetic evaluation plots of tedera at Medina and Mount Barker, Western Australia, and a Phoma sp. was isolated. Single-spore isolations of a typical Phoma sp. isolate were made onto potato dextrose agar and maintained at 20°C, and a representative culture has been lodged in the Western Australian Culture Collection Herbarium maintained at the Department of Agriculture and Food Western Australia (Accession No. WAC13435). Amplification of the internal transcribed spacer (ITS) 1 and ITS2 regions flanking the 5.8S rRNA gene were carried out with universal primers ITS1 and ITS4 according to published protocol (3). The DNA PCR products were sequenced and BLAST analyses was used to compare sequences with those in GenBank. The sequence had 99% nucleotide identity with the corresponding sequence in GenBank for Phoma herbarum. Isolates also showed morphological (e.g., 1) and molecular (e.g., 2) similarities with P. herbarum as described in other reports. The relevant sequence information for a representative isolate has been lodged in GenBank (Accession No. JQ282910). A conidial suspension of 107 conidia ml-1 from a single-spore culture was spray inoculated onto foliage of 6-week-old tedera plants maintained under >90% relative humidity conditions for 72-h postinoculation. Symptoms evident by 10 days postinoculation consisted of pale brown lesions, mostly 1.5 to 4 mm in diameter, which developed a distinct, dark brown margin. Occasional lesions also showed a distinct chlorotic halo extending 1 to 1.5 mm outside the boundary of the lesion. Infection studies were successfully repeated twice and P. herbarum was readily reisolated from infected foliage. No disease was observed on and no P. herbarum were isolated from water-inoculated control plants. Except for a recent published report of P. herbarum on field pea (Pisum sativum L.) (2), this pathogen has only been noted in the Australian Plant Pest Database as occurring on lucerne (Medicago sativa L.) and soybean (Glycine max (L.) Merr.) in Western Australia in 1985 and on a Protea sp. in 1991. To our knowledge, this is the first published report of P. herbarum as a pathogen on tedera in Australia or elsewhere. That P. herbarum occurs on other hosts in Australia and has a wide host range elsewhere together suggest its potential to be a pathogen on a wider range of host genera and species. References: (1) G. L. Kinsey. No. 1501 in: IMI Descriptions of Fungi and Bacteria. 2002. (2) Y. P. Li et al. Plant Dis. 95:1590, 2011. (3) T. J. White et al. Page 315 in: PCR Protocols: A Guide to Methods and Applications. Academic Press, San Diego, CA, 1990.
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Affiliation(s)
- Y P Li
- School of Plant Biology, The University of Western Australia, Crawley W.A. 6009 Australia
| | - D G Wright
- Department of Agriculture and Food Western Australia, Baron-Hay Court, South Perth, W.A. 6151, Australia
| | - V Lanoiselet
- Department of Agriculture and Food Western Australia, Baron-Hay Court, South Perth, W.A. 6151, Australia
| | - C P Wang
- Department of Agriculture and Food Western Australia, Baron-Hay Court, South Perth, W.A. 6151, Australia
| | - N Eyres
- Department of Agriculture and Food Western Australia, Baron-Hay Court, South Perth, W.A. 6151, Australia
| | - D Real
- Department of Agriculture and Food Western Australia, Baron-Hay Court, South Perth, W.A. 6151, Australia
| | - M P You
- School of Plant Biology and The UWA Institute of Agriculture, The University of Western Australia, Crawley, W.A. 6009, Australia
| | - M J Barbetti
- School of Plant Biology and The UWA Institute of Agriculture, The University of Western Australia, Crawley, W.A. 6009, Australia
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Wang CP, Yu JL, Zhang ZQ, Yan JB. Methyl 4-(5-methoxy-1 H-indol-3-yl)benzoate. Acta Crystallogr Sect E Struct Rep Online 2012; 68:o133. [PMID: 22259421 PMCID: PMC3254479 DOI: 10.1107/s1600536811052135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2011] [Accepted: 12/03/2011] [Indexed: 11/24/2022]
Abstract
In the title compound, C17H15NO3, the dihedral angle between the benzene ring and the indole ring system is 22.5 (3)°. In the crystal, molecules are linked by N—H⋯π and C—H⋯O interactions.
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Zheng Y, Wang JL, Liu C, Wang CP, Walker T, Wang YF. Differentially expressed profiles in the larval testes of Wolbachia infected and uninfected Drosophila. BMC Genomics 2011; 12:595. [PMID: 22145623 PMCID: PMC3261232 DOI: 10.1186/1471-2164-12-595] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [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: 07/22/2011] [Accepted: 12/06/2011] [Indexed: 12/13/2022] Open
Abstract
Background Wolbachia are endosymbiotic bacteria that are frequently found in arthropods and nematodes. These maternally inherited bacteria manipulate host reproduction by several mechanisms including cytoplasmic incompatibility (CI). CI is the most common phenotype induced by Wolbachia and results in the developmental arrest of embryos derived from crosses between Wolbachia-infected males and uninfected females. Although the molecular mechanisms of CI are currently unknown, several studies suggest that host sperm is modified by Wolbachia during spermatogenesis. Results We compared the gene expression of Drosophila melanogaster larval testes with and without the wMel strain of Wolbachia to identify candidate genes that could be involved in the interaction between Wolbachia and the insect host. Microarray, quantitative RT-PCR and in situ hybridization analyses were carried out on D. melanogaster larval testes to determine the effect of Wolbachia infection on host gene expression. A total of 296 genes were identified by microarray analysis to have at least a 1.5 fold change [q-value < 5%] in expression. When comparing Wolbachia-infected flies to uninfected flies, 167 genes were up-regulated and 129 genes down-regulated. Differential expression of genes related to metabolism, immunity, reproduction and other functions were observed. Quantitative RT-PCR (qRT-PCR) confirmed 12 genes are differentially expressed in the testes of the 3rd instar larvae of Wolbachia-infected and uninfected flies. In situ hybridization demonstrated that Wolbachia infection changes the expression of several genes putatively associated with spermatogenesis including JH induced protein-26 and Mst84Db, or involved in immune (kenny) or metabolism (CG4988-RA). Conclusions Wolbachia change the gene expression of 296 genes in the larval testes of D. melanogaster including genes related to metabolism, immunity and reproduction. Interestingly, most of the genes putatively involved in immunity were up-regulated in the presence of Wolbachia. In contrast, most of the genes putatively associated with reproduction (especially spermatogenesis) were down-regulated in the presence of Wolbachia. These results suggest Wolbachia may activate the immune pathway but inhibit spermatogenesis. Our data provide a significant panel of candidate genes that may be involved in the interaction between Wolbachia and their insect hosts. This forms a basis to help elucidate the underlying mechanisms of Wolbachia-induced CI in Drosophila and the influence of Wolbachia on spermatogenesis.
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Affiliation(s)
- Ya Zheng
- Hubei Key laboratory of genetic regulation and integrative biology, College of Life Science, Central China Normal University, Wuhan 430079, PR China
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Liu HB, Wang CP, Zhang ZY, Xu W, Hao ZN, Sun HW. [Isolation of highly-effective benzo[a]pyrene degrading strain and its degradation capacity]. Huan Jing Ke Xue 2011; 32:2696-2702. [PMID: 22165241] [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: 05/31/2023]
Abstract
One new mycete, which could degrade high concentration (up to 100 mg/L) of benzo[a]pyrene (BaP) in liquid, was isolated from contaminated soil of Beijing Coking Plant by gradually increasing the concentration of BaP in mineral salt medium (MSM) in order to get new microorganism species for remediation of BaP contamination. The strain was identified as Lasiodiplodia theobromae, and its biodegradation ability in liquid was further investigated. The results showed that L. theobromae could utilize BaP as sole carbon and energy sources. The experiment was conducted for 10 days, and the biodegradation rate of BaP was 52.5% +/- 1.5%. Compared to Czapek's mineral medium, MSM was more suitable for L. theobromae, and biodegradation rate was 2.8 percent greater than that by using Czapek's mineral media after 10 days' cultivation. Potato-dextrose nutrient medium could accelrate the biodegradation in early stage, and biodegradation rate of BaP increased by 19.2 percent in the second day. However, the accelration was not significant in the latter period, biodegradation rate was only increased by 5.4 percent after 10 days' cultivation. L. theobromae could tolerate a wide pH range, with the optimum pH of 5. Addition of salicylic and sodium succinate enhanced the biodegradation rates by 6.2 percent and 4.2 percent, respectively, after 10 days' cultivation. Besides BaP, L. theobromae could also degrade high concentration (200 mg/L) of phenanthrene and pyrene, and the biodegradation rates were 70.0% +/- 1.0%, 59.2% +/- 3.2%, and 52.5% +/- 1.5% when they were single substrate and were 21.6% +/- 2.1%, 14.5% +/- 5.5%, and 11.9% +/- 2.2% when they existed in mixture, respectively. The biodegradation rate followed an order of phenanthrene > pyrene > BaP. The co-existence of the three substrates led a reduction in biodegradation. This study provides a new microorganism species for remediation of polycyclic aromatic hydrocarbons (PAHs) contamination in the environment.
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Affiliation(s)
- Hai-Bin Liu
- Ministry of Education Key Laboratory of Pollution Processes and Environmental Criteria, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China.
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Xu LJ, Yan JC, Wang B, Liu PJ, Gong J, Wang CP. [Effect of the costimulatory molecules OX40-OX40 ligand interaction on the expression of NFATc1 in leukocytes of apolipoprotein E-deficient mice]. Zhonghua Xin Xue Guan Bing Za Zhi 2011; 39:526-530. [PMID: 21924079] [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: 05/31/2023]
Abstract
OBJECTIVE To investigate the effect of OX40/OX40L interaction on the nuclear factor of activated T cells c1 (NFATc1) in ApoE-/- mice. METHODS Lymphocytes were prepared from mouse spleens after Collar-treated Surgery, then incubated with a range of agonistic anti-OX40 mAbs and inhibitory anti-OX40L mAb to stimulate or inhibit OX40-OX40L interaction in vitro. The expression of NFATc1 mRNA and protein in lymphocytes of ApoE-/- mice was measured by Real Time PCR and flow cytometry, respectively. RESULTS (1) After stimulating OX40-OX40L signal pathway, the expression of NFATc1 mRNA and protein in leukocytes of ApoE-/- mice was significantly increased, with maximal effect occurring at 20 µg/ml anti-OX40 mAb-stimulated, and peaked at 24 h at any concentration (P < 0.01). (2) Anti-OX40L mAb significantly suppressed the expression of NFATc1 in leukocytes of ApoE-/- mice, with maximal effect occurring at 20 µg/ml anti-OX40L mAb, and peaked at 24 h (P < 0.001). CONCLUSIONS OX40-OX40L interaction can regulate the mRNA and protein expressions of NFATc1 in lymphocytes of ApoE-/- mice.
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Affiliation(s)
- Liang-Jie Xu
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang 212001, China
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Li YC, Shi RP, Wang CP, Liu XJ, Wang Y. Predicting microstructures in polymer blends under two-step quench in two-dimensional space. Phys Rev E Stat Nonlin Soft Matter Phys 2011; 83:041502. [PMID: 21599164 DOI: 10.1103/physreve.83.041502] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2010] [Indexed: 05/30/2023]
Abstract
The formation of nanostructures during two-step quench in binary polymer systems having various types of liquid miscibility gaps are investigated systematically via computer simulations using the phase field method. Coupled liquid spinodal decomposition and fluid flow processes are considered by solving simultaneously the Cahn-Hilliard and Navier-Stokes equations. Various interesting phenomena and morphological patterns are predicted. It is found that the primary microstructures developed at the first quench and isothermal holding temperature greatly affect the secondary microstructures developed during the second quench and isothermal holding. Depending on the morphology and scale of the primary microstructure, either multicore and multishell or unicore and unishell structures are predicted. The breakup of annuluses in a core-shell structure in two dimensions is analyzed. The effects of viscosity on the formation of core-shell structure and on the growth and coarsening behaviors of bimodal droplets produced by the two-step quench in systems are also investigated.
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Affiliation(s)
- Y C Li
- Department of Materials Science and Engineering, College of Materials, and Research Center of Materials Design and Applications, Xiamen University, Xiamen 361005, People's Republic of China
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Yan JC, Liu DM, Wang CP, Chen GH, Ding S, Liu PJ, Du RZ. WITHDRAWN: Increased levels of soluble and membrane-bound OX40 ligand in patients with acute coronary syndrome. Biomed Pharmacother 2008:S0753-3322(08)00304-1. [PMID: 18848769 DOI: 10.1016/j.biopha.2008.08.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2008] [Accepted: 08/24/2008] [Indexed: 11/17/2022] Open
Affiliation(s)
- Jin-Chuan Yan
- Department of Cardiology, Affiliated Hospital of Jiang Su University, Zhenjiang 212001, China
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Liu DM, Yan JC, Wang CP, Chen GH, Ding S, Liu PJ, Du RZ. The clinical implications of increased OX40 ligand expression in patients with acute coronary syndrome. Clin Chim Acta 2008; 397:22-6. [PMID: 18674525 DOI: 10.1016/j.cca.2008.07.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2008] [Revised: 07/06/2008] [Accepted: 07/07/2008] [Indexed: 10/21/2022]
Abstract
BACKGROUND Increasing evidence show that OX40 ligand (OX40L), also known as tumor necrosis factor superfamily member 4 (TNFSF4), plays an important role in the pathogenesis of atherosclerosis. We investigated whether expression levels of soluble OX40L in serum and of membrane OX40L on platelets were related to serum concentrations of matrix metalloproteinases (MMPs) and stability of coronary atherosclerotic plaque in patients with acute coronary syndrome (ACS). METHODS We included healthy controls (n=30), patients with stable angina (SA) (n=40) and patients with ACS, including unstable angina (UA) (n=70) and acute myocardial infarction (AMI) (n=40). The expression of OX40L on platelets (pOX40L) was analyzed with flow cytometry whereas serum concentrations of soluble OX40L (sOX40L), MMP-9 and MMP-3 were determined with ELISA. All coronary stenoses with >or=30% diameter reduction were assessed by angiographic coronary stenosis morphology. RESULTS The expression of OX40L on platelets were significantly higher in patients with ACS (61.5+/-11.5) compared with healthy controls (28.9+/-7.4) or with the group of patients with SA (31.2+/-8.1) (mean fluorescence intensity+/-SD) (p<0.001). Similarly, we observed higher sOX40L concentrations in patients with ACS (34.6+/-9.3) compared with controls (10.2+/-4.7) or patients with SA (11.4+/-5.8) (ng/ml+/-SD) (p<0.001). Serum MMP-3 and MMP-9 levels in patients were two times greater than those in the control group. A positive correlation was observed between OX40L expression on platelets and MMP-9 and MMP-3 serum concentrations. OX40L expression on platelets were furthermore correlated with soluble OX40L in serum and with complex coronary stenoses (r1=0.61, r2=0.57, p<0.001). CONCLUSION Patients with ACS show increased OX40L system (pOX40L and sOX40L) expression which may create a proinflammatory milieu for aggravating the development of atherosclerosis, and may be a valuable marker for predicting the severity of ACS.
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Affiliation(s)
- Dong-Ming Liu
- Department of Cardiology, Affiliated Hospital of Jiangsu University, Zhenjiang, China
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Sun HW, Huo C, Wang CP. [Desorption of polycyclic aromatic hydrocarbons in soils assisted by SPMD]. Huan Jing Ke Xue 2007; 28:1841-1846. [PMID: 17926421] [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: 05/25/2023]
Abstract
In order to develop a new method to study the desorption and bioavailability of hydrophobic organic chemicals (HOCs) in soils, a method using semi-permeable membrane device (SPMD) to study desorption of HOCs in soils has been set up, and assisted desorption of polycyclic aromatic hydrocarbons (PAHs), phenanthrene(PHE), pyrene(PYE), and benzo[a] pyrene (B[a]PYE) in three different kinds of soils was studied using SPMD. The results show that SPMD is a good measurement to study the desorption and bioavailability of HOCs in soils. SPMD assisted desorption of PAHs is highly dependent on the properties of the soils and the chemicals. PHE and PYE desorption percentages increase with the reduction of the content of soil organic matter (SOM), so that the desorption of the two chemicals increases from 56.45% and 48.28% to almost 100% when SOM content was reduced from 18.68% to 0.3%. However, clay has a significant holding effect on B[a]PYE, and PYE desorption is only 66.97% in Soil 3 with SOM of 0.3% and clay content of 39.05%. There is a great variety in the desorption among the different PAHs. With the reduction of SOM content and the elevation of contamination concentration, the difference between PHE and PYE decreases gradually, while B[a]PYE exhibits a significant difference from them. This could be attributed to the high lipophilicity and large molecular size of B[a]PYE, which make the molecule of B[a]PYE to be more easier to be held in the nanopores of clay and the dense region of SOM.
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Affiliation(s)
- Hong-Wen Sun
- College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China.
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Kuo RJ, Wu P, Wang CP. An intelligent sales forecasting system through integration of artificial neural networks and fuzzy neural networks with fuzzy weight elimination. Neural Netw 2002; 15:909-25. [PMID: 14672167 DOI: 10.1016/s0893-6080(02)00064-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Sales forecasting plays a very prominent role in business strategy. Numerous investigations addressing this problem have generally employed statistical methods, such as regression or autoregressive and moving average (ARMA). However, sales forecasting is very complicated owing to influence by internal and external environments. Recently, artificial neural networks (ANNs) have also been applied in sales forecasting since their promising performances in the areas of control and pattern recognition. However, further improvement is still necessary since unique circumstances, e.g. promotion, cause a sudden change in the sales pattern. Thus, this study utilizes a proposed fuzzy neural network (FNN), which is able to eliminate the unimportant weights, for the sake of learning fuzzy IF-THEN rules obtained from the marketing experts with respect to promotion. The result from FNN is further integrated with the time series data through an ANN. Both the simulated and real-world problem results show that FNN with weight elimination can have lower training error compared with the regular FNN. Besides, real-world problem results also indicate that the proposed estimation system outperforms the conventional statistical method and single ANN in accuracy.
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Affiliation(s)
- R J Kuo
- Department of Industrial Engineering, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC.
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Abstract
The egg-type core microstructure where one alloy encases another has previously been obtained during experiments in space. Working with copper-iron base alloys prepared by conventional gas atomization, we were able to obtain this microstructure under gravity conditions. The minor liquid phase always formed the core of the egg, and it sometimes also formed a shell layer. The origin of the formation of this core microstructure can be explained by Marangoni motion on the basis of the temperature dependence of the interfacial energy, which shows that this type of powder can be formed even if the cooling rate is very high.
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Affiliation(s)
- C P Wang
- Department of Materials Science, Graduate School of Engineering, Tohoku University, Aoba-yama 02, Sendai 980-8579, Japan
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Abstract
In order to record caloric nystagmus (CN) using three-dimensional videonystagmography (3D VNG) 14 subjects were placed in the supine position with the head tilted up 30 degrees relative to the earth's horizontal plane. After the primary-phase CN had terminated, the subjects were repositioned from a supine to a sitting position, with the head anteflexed 30 degrees for recording the post-caloric nystagmus (PCN). In addition, 8 of the original subjects were placed in the supine position but with the head turned 40 degrees to the left so that the irrigated (right) ear was oriented upwards. After the primary-phase CN had terminated, the subjects were rotated by 180 degrees so that the irrigated ear was oriented downwards to record PCN. The results indicated that both methods successfully provoked horizontal and vertical CN. For torsional CN, the irrigated ear up/down method produced a higher provocation rate (75%) than the supine/sitting method (50%), but the difference was not significant. Comparing the provocation rate of the PCN for the horizontal component revealed that the two methods do not differ significantly. However, when comparing the provocation rates of PCN for the vertical component, the irrigated ear up/down method showed a higher rate (82%) than the supine/sitting method (18%). Thus using 3D VNG coupled with postural change during caloric testing, the horizontal or vertical components of PCN can be successfully provoked.
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Affiliation(s)
- Y H Young
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan.
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Affiliation(s)
- W X Niu
- Surgical Department, Zhongshan Hospital, Fu Dan University Medical Center,136 Yixueyuan Road, Shanghai 200032,China
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Abstract
Thirty-seven consecutive patients with cancer of the anterior two-thirds of the tongue without clinical neck lymph nodes or distant metastasis were treated with transoral carbon dioxide (CO2) laser microsurgery. During the operation, a monopolar coagulation-suction device was applied to achieve a clear surgical field. Under a surgical microscope, we repeatedly palpated the soft tissue to identify the tumour margins, in particular the deep margin, to maintain adequate safe margins in three dimensions. We resected the tumour by en bloc procedures rather than by vaporization or debulking. Of the 28 patients in the T1 and T2 groups, 26 patients did not receive postoperative radiotherapy. The local control rate calculated by the methods of Kaplan and Meier in all 37 patients at 5 years was 93.6%. No local recurrence occurred in the T1 or T2 cases. Nine patients suffered from neck recurrence and the neck control rate at 5 years was 74.6%. Eight of these nine patients were salvaged by surgery with adjuvant radiotherapy, and six of them finally achieved disease-free status. The 5-year disease-free survival rate for our series was 88%. Our surgical techniques using CO2 laser microsurgery are effective and advantageous methods for excision of oral tongue cancer, especially stage I and II lesions.
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Affiliation(s)
- C P Wang
- Department of Otolaryngology, Yuan-Shan Veterans Hospital, Taipei, Taiwan
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Wang YF, Lien CF, Wang CP, Fu CY. Type III tympanoplasty with cartilage obliteration for cholesteatoma surgery. Zhonghua Yi Xue Za Zhi (Taipei) 2000; 63:898-903. [PMID: 11195141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
BACKGROUND The main objective of cholesteatoma surgery is complete eradication of the disease. Another goal is to preserve hearing acuity. We reviewed type III tympanoplasty with cartilage obliteration for cholesteatomatous ears. To evaluate the role of ossiculoplasty, the functional results of classic and modified type III tympanoplasties were compared. METHODS Thirty-six cholesteatomatous ears undergoing type III tympanoplasty with cartilage obliteration were reviewed. The same operator performed these operations from 1984 until 1995. According to the CAO staging system, there were five early, 16 moderate and 15 advanced-stage cases of cholesteatoma. Using the anterior approach, all operations were canal-wall-down type III tympanoplasties with "tailored" open cavity and cartilage obliteration. There were 24 classic and 12 modified type III tympanoplasties. RESULTS The average follow-up duration was 7.2 years. Neither recidivistic cholesteatoma nor retraction pocket was observed postoperatively. There was an improvement in atelectatic score after surgery. The mean postoperative air-bone gap (ABG) was 15.8 +/- 10.7 dB and the mean closure of the ABG was 4.0 +/- 14.3 dB. After the disease stage and preoperative hearing status were adjusted using regression analysis, there was no significant difference in hearing results between ears that underwent classic or modified type III tympanoplasties. CONCLUSIONS We performed the canal-wall-down tympanoplasty with cartilage obliteration using the anterior approach for treatment of cholesteatoma. Such surgical techniques eradicate the cholesteatoma, prevent its recurrence and create a clean ear. Hearing reconstruction can also be accomplished in a single-stage procedure offering a serviceable hearing acuity.
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Affiliation(s)
- Y F Wang
- Department of Otorhinolaryngology, Taipei Veterans General Hospital, 201, Section 2, Shih-Pai Road, Taipei 112, Taiwan, ROC
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Wang CP. [Acute arthritis of the temporomandibular joint:case report]. Shanghai Kou Qiang Yi Xue 1999; 8:228. [PMID: 15048220] [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: 04/29/2023]
Affiliation(s)
- C P Wang
- Department of Dentistry, Zhoupu Hospital of Nanhui District. Shanghai 201318, China
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Wang CP, Tseng TC, Lee RC, Chang SY. The techniques of nonmuscular closure of hypopharyngeal defect following total laryngectomy: the assessment of complication and pharyngoesophageal segment. J Laryngol Otol 1997; 111:1060-3. [PMID: 9472577 DOI: 10.1017/s0022215100139337] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The usual method of reconstructing a hypopharyngeal defect during total laryngectomy includes pharyngeal muscle layer closure, which may result in high pharyngoesophageal pressure. We hypothesize that nonclosure of the pharyngeal muscle can reduce the pressure of the pharyngoesophageal segment which can reduce the chances of the formation of pharyngocutaneous fistulae. A technique of nonmuscular closure of a hypopharyngeal defect is presented. The differences in the rate of fistula formation and swallowing function between patients with usual and nonmuscular closure were also studied. Sixty consecutive laryngectomees were enrolled in this study. Thirty patients received usual closure after total laryngectomy, whereas the other 30 patients underwent non closure of their pharyngeal muscles. One patient (3.3 per cent) in the nonmuscular closure group and three patients (10 per cent) in the usual closure group developed a pharyngocutaneous fistula. The pharyngoesophageal pressures of the nonmuscular closure group were significantly lower than those of the usual closure group. We conclude that the technique of nonclosure of the pharyngeal constrictor muscle after total laryngectomy is relatively more simple and is not associated with a higher rate of fistula formation. Furthermore, nonclosure of the pharyngeal constrictor muscle is preferable to muscular closure because it reduces the spasm of the pharyngoesophageal segment which limits voice rehabilitation.
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Affiliation(s)
- C P Wang
- Department of Otolaryngology, Veterans General Hospital, National Yang Ming University, Taipei, Taiwan
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Over H, Wang CP, Jona F. Atomic bond configuration of Ge(111)-( sqrt 3 x sqrt 3 )R30 degrees-Au: A low-energy electron-diffraction study. Phys Rev B Condens Matter 1995; 51:4231-4235. [PMID: 9979262 DOI: 10.1103/physrevb.51.4231] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [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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Abstract
We induced lipid peroxidation in rat heart mitochondria with ferrous sulphate (FeSO4) and compared the inhibitory effect of various tannins on the peroxidation. Oxygen consumption and malondialdehyde (MDA) formation were used to quantitate the amount of lipid peroxidation, and the free radical scavenger activity of tannins was measured with a diphenyl-p-picryl hydrazyl (DPPH) method. Of 25 tannins and related compounds tested, catechin benzylthioether and procyanidin B-2 benzylthioether were the most potent in inhibiting lipid peroxidation, with inhibitory effects stronger than that of trolox, a water soluble analogue of vitamin E. The concentrations (IC50) required for catechin benzylthioether and procyanidin B-2 benzylthioether to inhibit oxygen consumption to 50% of control values were 0.85 and 2.0 microM, respectively, while their IC50 values from the inhibition of MDA formation were 0.9 and 1.70 microM, respectively. The IC50 values for catechin, and procyanidin B-2 to inhibit oxygen consumption were 34.0 and 11.0 microM. Both compounds were less potent than their benzylthioether derivatives. However, the ability of catechin and procyanidin B-2 to scavenge DPPH were similar to that of their benzylthioether derivatives. We conclude that conjugation with a benzylthioether group enhances the inhibitor effect of tannins on lipid peroxidation, and that the mechanism is not an increase in its scavenger activity.
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Affiliation(s)
- C Y Hong
- Institute of Traditional Medicine, Yang-Ming University, Taipei Veterans General Hospital, Taiwan, ROC
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Abstract
The role of intracellular thiols in menadione-mediated toxicity was studied in neonatal rat cardiomyocytes. The sensitivity of cardiomyocytes to menadione was greater than that of skeletal muscle cells and 3T3 fibroblasts. Before cell degeneration, menadione induced marked depletion of intracellular thiols and an increase of oxidized glutathione. The sensitivity of these cells to menadione correlated with the level of depletion of intracellular thiols. After incubation of cardiomyocytes with menadione, glutathione reductase activity was inhibited and lipid peroxidation was increased. Both dicumarol (an inhibitor of DT-diaphorase) and diethyldithiocarbamate (an inhibitor of superoxide dismutase) enhanced the capacity of menadione to induce cellular damage and to cause depletion of intracellular glutathione. Decreasing intracellular glutathione by pretreatment of cells with N-ethylmaleimide or buthionine sulphoximine also increased menadione-induced cell degeneration. Preincubation with cysteine or dithiothreitol suppressed the capacity of menadione to damage the cells. Menadione-induced lipid peroxidation was also suppressed by the same treatment. These results show that the oxidative stress induced by menadione in cardiomyocytes results in the depletion of glutathione and protein thiols. Both DT-diaphorase and superoxide dismutase can protect cells from the toxicity of menadione. Cellular thiols are determinants of the responsiveness to menadione.
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Affiliation(s)
- W F Tzeng
- Department of Biology, Fu Jen University, Taipei, Taiwan, R.O.C
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