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Yang L, Su XP, Ye F, Zhang W, Xing Y, Li H, Ji Z, Liu Q, Liu BB, Niu J. [An analysis of assessment results of prevention and control of occupational hazards in a city]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2019; 36:899-903. [PMID: 30812074 DOI: 10.3760/cma.j.issn.1001-9391.2018.12.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the current status of prevention and control of occupational hazards in a city in 2017, to understand the capability to prevent and control occupational hazards and the level of occupational health supervision and management, and to propose measures to urge employers to assume the main responsibility for the prevention and control of occupational diseases. Methods: An analysis of the main factors influencing the prevention and control of occupational hazards in the city was performed to screen out six semi-quantitative assessment indicators (including the training of the main responsible persons and occupational health management personnel in companies) and four qualitative assessment indicators (including the coverage of supervision and inspection of occupational hazards performed by the district safety supervision department) , which could be used to measure the prevention and control effects of regional occupational hazards. Each indicator was scored. The typical investigation method was used to do data review and on-site inspection of 170 companies, 17 district-level occupational health supervision departments, and 16 sub-district (township) occupational health supervision departments in the city from October to December, 2017. The prevention and control of occupational diseases in each district was scored, and the completion rate and completion situation of each indicator in the city were analyzed. Results: The mean score of prevention and control of occupational hazards in the city was 84.9. The scores of two districts were relatively high, being 88.9 and 88.7, respectively; the scores of 9 (52.9%) districts were higher than 85. The pass rate of training for the main responsible persons and occupational health management personnel in companies in the city was 95.9%, the pass rate of occupational health training for workers was 84.7%, the pass rate of occupational health examination for workers was 96.5%, the pass rate for the inspection of occupational hazardous factors in workplaces was 95.3%, the pass rate for notifying occupational hazards in workplaces is 95.9%, and the pass rate for applying the warning signs of occupational hazards in workplaces was 76.5%. Conclusion: The awareness of the importance of prevention and control of occupational hazards in all districts of the city has been increased, but the effectiveness of occupational health training for workers needs to be strengthened. The supply and demand of occupational health technical services are still not matched, and the ways and methods of occupational health supervision and inspection need to be improved.
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Affiliation(s)
- L Yang
- Beijing Academy of Safety Science and Technology, Beijing 100070, China
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Cai R, Wu M, Lin M, Guo X, Xing Y. Pretransplant Homeostasis Model Assessment of Insulin Resistance and Fasting Plasma Glucose Predict New-Onset Diabetes After Renal Transplant in Chinese Patients. Transplant Proc 2019; 51:768-773. [PMID: 30979462 DOI: 10.1016/j.transproceed.2019.01.062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 10/25/2018] [Accepted: 01/17/2019] [Indexed: 10/27/2022]
Abstract
BACKGROUND AND AIM The present study aims to determine if homeostasis model assessment of insulin resistance (HOMA-IR) index, fasting plasma glucose (FPG), and plasma insulin (Ins) are able to predict development of new onset diabetes after transplant (NODAT) for kidney recipients. METHODS We performed a single-center retrospective study of 123 nondiabetic patients receiving a first renal transplant. The NODAT was diagnosed between 1 month and 1 year post transplant. Both univariate and multivariable analyses, including logistic regression analysis and Cox proportional hazards model, were applied to dissect potential pretransplant risk factors of NODAT. RESULTS A total of 26.8% (33/123) of recipients developed NODAT in the first year post transplant. The NODAT patients showed higher HOMA-IR index and increased levels of FPG and Ins than non-NODAT. Interestingly, we consistently revealed that both FPG (logistic: odds ratio [OR], 3.17 [1.41-6.45]; P = .01; Cox: OR, 2.75 [1.26-4.56]; P = .02) and HOMA-IR index (logistic: OR, 1.73 [1.21-2.87]; P = .02; Cox: OR, 1.72 [1.21-2.46]; P = .002) robustly predicted the development of NODAT. However, these analyses showed that neither plasma Ins nor hemoglobin A1c was associated with NODAT. CONCLUSION Our findings suggest that pretransplant HOMA-IR and FPG are independent predictors for the development of NODAT in Chinese nondiabetic patients receiving a first renal transplant.
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Affiliation(s)
- R Cai
- Department of Organ Transplantation, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - M Wu
- Department of Nephrology, Longyan First Hospital, Longyan, Fujian, China
| | - M Lin
- Department of Organ Transplantation, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - X Guo
- Department of Organ Transplantation, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Y Xing
- Department of Nephrology, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong, China.
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Fang KF, Du BS, Zhang Q, Xing Y, Cao QQ, Qin L. Boron deficiency alters cytosolic Ca 2+ concentration and affects the cell wall components of pollen tubes in Malus domestica. Plant Biol (Stuttg) 2019; 21:343-351. [PMID: 30444945 DOI: 10.1111/plb.12941] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 09/05/2018] [Accepted: 11/13/2018] [Indexed: 06/09/2023]
Abstract
Boron (B) is essential for normal plant growth, including pollen tube growth. B deficiency influences various physiological and metabolic processes in plants. However, the underlying mechanism of B deficiency in pollen tube growth is not sufficiently understood. In the present research, the influence of B deficiency on apple (Malus domestica) pollen tube growth was studied and the possible regulatory mechanism evaluated. Apple pollen grains were cultured under different concentrations of B. Scanning ion-selective electrode technique, fluorescence labelling and Fourier-transform infrared (FTIR) analysis were used to detect calcium ion flux, cytosolic Ca2+ concentration ([Ca2+ ]cyt), actin filaments and cell wall components of pollen tubes. B deficiency inhibited apple pollen germination and induced retardation of tube growth. B deficiency increased extracellular Ca2+ influx and thus led to increased [Ca2+ ]cyt in the pollen tube tip. In addition, B deficiency modified actin filament arrangement at the pollen tube apex. B deficiency also altered the deposition of pollen tube wall components. Clear differences were not observed in the distribution patterns of cellulose and callose between control and B deficiency treated pollen tubes. However, B deficiency affected distribution patterns of pectin and arabinogalactan proteins (AGP). Clear ring-like signals of pectins and AGP on control pollen tubes varied according to B deficiency. B deficiency further decreased acid pectins, esterified pectins and AGP content at the tip of the pollen tube, which were supported by changes in chemical composition of the tube walls. B appears to have an active role in pollen tube growth by affecting [Ca2+ ]cyt, actin filament assembly and pectin and AGP deposition in the pollen tube. These findings provide valuable information that enhances our current understanding of the mechanism regulating pollen tube growth.
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Affiliation(s)
- K F Fang
- College of Landscape Architecture, Beijing University of Agriculture, Beijing, China
- Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, Beijing, China
| | - B S Du
- College of Landscape Architecture, Beijing University of Agriculture, Beijing, China
| | - Q Zhang
- Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, Beijing, China
- Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
| | - Y Xing
- Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, Beijing, China
- Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
| | - Q Q Cao
- Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, Beijing, China
- College of Biological Science and Engineering, Beijing University of Agriculture, Beijing, China
| | - L Qin
- Beijing Collaborative Innovation Center for Eco-environmental Improvement with Forestry and Fruit Trees, Beijing, China
- Key Laboratory for Agricultural Application and New Technique, College of Plant Science and Technology, Beijing University of Agriculture, Beijing, China
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Sun J, Yang WW, Zeng LJ, Geng MJ, Dong YH, Xing Y, Ma J, Li ZJ, Wang LP. [Surveillance data on notifiable infectious diseases among students aged 6-22 years in China, 2011-2016]. Zhonghua Liu Xing Bing Xue Za Zhi 2019; 39:1589-1595. [PMID: 30572383 DOI: 10.3760/cma.j.issn.0254-6450.2018.12.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the epidemiological characteristics of notifiable infectious diseases among Chinese students from 2011 to 2016 and to provide reference for the effective prevention and control programs on infectious disease among students. Methods: Both morbidity and mortality of notifiable infectious diseases among Chinese students aged 6-22 years from 2011 to 2016 were analyzed, with main characteristics of the disease described. Results: During 2011 to 2016, morbidities of Categories A, B and C infectious diseases among the Chinese students aged 6-22 years showed a decreasing trend, from 248.24/100 000 in 2012 to 158.57/100 000 in 2016. Mortality rates of Category A, B and C infectious diseases had also decreased from 0.12/100 000 in 2011 to 0.07/100 000 in 2016. The average morbidity of the top four diseases from Category A and B infectious diseases appeared as: tuberculosis (16.24/100 000), scarlet fever (9.39/100 000), hepatitis B (7.69/100 000) and bacillary and amebic dysentery (7.15/100 000). The average rates of mortality on the top four diseases appeared as: rabies (0.044 8/100 000), HIV/AIDS (0.027 7/100 000), tuberculosis (0.008 0/100 000) and Japanese encephalitis (0.005 9/100 000). The average rates of morbidity on the top four diseases appeared as: mumps (75.81/100 000), hand-foot-mouth disease (28.55/100 000), other infectious diarrhea (22.41/100 000) and influenza (15.67/100 000) in the Category C. Reported death cases were from hand-foot-mouth disease (11 cases), influenza (9 cases), mumps (1 case) and rubella (1 case). The prevalence rates varied among different student populations, with higher HIV/AIDS, hepatitis B and tuberculosis rates among college and senior high school students, while higher mumps, influenza and hand-foot-mouth disease rates among primary school and junior high school students. Conclusions: Both morbidity and mortality of notifiable infectious diseases among Chinese students aged 6-22 years had decreased significantly in 2011-2016. However, the major infectious diseases had become new challenges among students. HIV/AIDS had become a key infectious disease among college students and the relatively high prevalence of tuberculosis was seen in college and high school students.
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Affiliation(s)
- J Sun
- Division of Infectious Disease Control and Prevention, Key Laboratory of Surveillance and Early Warning on Infectious Diseases, Chinese Center for Disease Control and Prevention, Beijing 102206, China; Department of Acute Infectious Disease Control and Prevention, Liu'an Center for Disease Control and Prevention, Liu'an, 237001, China
| | - W W Yang
- Division of Infectious Disease Control and Prevention, Key Laboratory of Surveillance and Early Warning on Infectious Diseases, Chinese Center for Disease Control and Prevention, Beijing 102206, China; Preventive Medical Information Institute, Hubei Center for Disease Control and Prevention, Wuhan 430079, China
| | - L J Zeng
- Division of Infectious Disease Control and Prevention, Key Laboratory of Surveillance and Early Warning on Infectious Diseases, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - M J Geng
- Division of Infectious Disease Control and Prevention, Key Laboratory of Surveillance and Early Warning on Infectious Diseases, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - Y H Dong
- Institute of Child and Adolescent Health of Peking University, Beijing 100191, China
| | - Y Xing
- Institute of Child and Adolescent Health of Peking University, Beijing 100191, China
| | - J Ma
- Institute of Child and Adolescent Health of Peking University, Beijing 100191, China
| | - Z J Li
- Division of Infectious Disease Control and Prevention, Key Laboratory of Surveillance and Early Warning on Infectious Diseases, Chinese Center for Disease Control and Prevention, Beijing 102206, China
| | - L P Wang
- Division of Infectious Disease Control and Prevention, Key Laboratory of Surveillance and Early Warning on Infectious Diseases, Chinese Center for Disease Control and Prevention, Beijing 102206, China
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Du D, Liu M, Xing Y, Chen X, Zhang Y, Zhu M, Lu X, Zhang Q, Ling Y, Sang X, Li Y, Zhang C, He G. Semi-dominant mutation in the cysteine-rich receptor-like kinase gene, ALS1, conducts constitutive defence response in rice. Plant Biol (Stuttg) 2019; 21:25-34. [PMID: 30101415 DOI: 10.1111/plb.12896] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 08/04/2018] [Indexed: 06/08/2023]
Abstract
Plants have evolved a sophisticated two-branch defence system to prevent the growth and spread of pathogen infection. The novel Cys-rich repeat (CRR) containing receptor-like kinases, known as CRKs, were reported to mediate defence resistance in plants. For rice, there are only two reports of CRKs. A semi-dominant lesion mimic mutant als1 (apoptosis leaf and sheath 1) in rice was identified to demonstrate spontaneous lesions on the leaf blade and sheath. A map-based cloning strategy was used for fine mapping and cloning of ALS1, which was confirmed to be a typical CRK in rice. Functional studies of ALS1 were conducted, including phylogenetic analysis, expression analysis, subcellular location and blast resistance identification. Most pathogenesis-related (PR) genes and other defence-related genes were activated and up-regulated to a high degree. ALS1 was expressed mainly in the leaf blade and sheath, in which further study revealed that ALS1 was present in the vascular bundles. ALS1 was located in the cell membrane of rice protoplasts, and its mutation did not change its subcellular location. Jasmonic acid (JA) and salicylic acid (SA) accumulation were observed in als1, and enhanced blast resistance was also observed. The mutation of ALS1 caused a constitutively activated defence response in als1. The results of our study imply that ALS1 participates in a defence response resembling the common SA-, JA- and NH1-mediated defence responses in rice.
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Affiliation(s)
- D Du
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - M Liu
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - Y Xing
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - X Chen
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - Y Zhang
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - M Zhu
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - X Lu
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - Q Zhang
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - Y Ling
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - X Sang
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - Y Li
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - C Zhang
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
| | - G He
- Rice Research Institute, Key Laboratory of Application and Safety Control of Genetically Modified Crops, Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China
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Zhang Q, Zhang L, Xing Y, Qin Y, Liu G. Comparison of the 48-week efficacy of Lamivudine plus Adefovir or Entecavir monotherapy in patients with HBeAg negative hepatitis following Lamivudine treatment failure. Acta Gastroenterol Belg 2019; 82:31-34. [PMID: 30888751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
AIMS To compare the efficacy of treatment with lamivudine (LAM) plus adefovir (ADV) or entecavir (ETV) monotherapy in LAM treatment failure patients with HBeAg negative chronic hepatitis B (CHB) patients during 48 weeks of therapy. PATIENTS AND METHODS Thirty patients with HBeAg negative CHB were enrolled in the study. The serum levels of HBV DNA, HBsAg/HBsAb, and ALT were assessed by enzyme-linked immunosorbent assay at 0, 12, 24, 36, and 48 weeks. RESULTS The rate of undetectable HBV DNA in the LAM+ADV group was 100%, which was higher than the ETV group at 48 weeks (73.33%, χ2 = 4.615, P = 0.032). Multivariate analysis using the Cox proportional hazards model showed that therapy with LAM+ADV or baseline levels of HBV DNA <107 copies/ml were independent predictive factors for undetectable HBV DNA rates in all patients (RR: 2.488, P = 0.042; RR: 0.201, P = 0.035). CONCLUSIONS During the 48 weeks of treatment in patients with HBeAg negative CHB, LAM plus ADV suppressed HBV replication more effectively than ETV monotherapy. In addition, no virologic breakthrough was detected in the LAM add-on ADV group. Additionally, therapy with LAM+ADV or baseline levels of HBV DNA <107copies/ml were independent predictive factors for undetectable HBV DNA rates in patients.
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Affiliation(s)
- Q Zhang
- Department of Gastroenterology, Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine of Hebei Province, Cangzhou, 061000, China
| | - L Zhang
- Department of Gastroenterology, Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine of Hebei Province, Cangzhou, 061000, China
| | - Y Xing
- Department of Gastroenterology, Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine of Hebei Province, Cangzhou, 061000, China
| | - Y Qin
- Department of Gastroenterology, Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine of Hebei Province, Cangzhou, 061000, China
| | - G Liu
- Department of Gastroenterology, Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine of Hebei Province, Cangzhou, 061000, China
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Si Y, Bao H, Han L, Chen L, Zeng L, Jing L, Xing Y, Geng Y. Dexmedetomidine attenuation of renal ischaemia-reperfusion injury requires sirtuin 3 activation. Br J Anaesth 2018; 121:1260-1271. [PMID: 30442253 DOI: 10.1016/j.bja.2018.07.007] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 06/20/2018] [Accepted: 07/12/2018] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Dexmedetomidine attenuates renal ischaemia and reperfusion (I/R) injury, but its mechanism of action is unclear. As sirtuin 3 (SIRT3) activation can alleviate acute kidney injury, we investigated whether dexmedetomidine acts through SIRT3 to reduce renal I/R injury. METHODS The potential involvement of SIRT3 in dexmedetomidine attenuation of renal I/R injury was tested in HK2 cells subjected to hypoxia/reoxygenation and C57BL/6J mice subjected to renal I/R. A short interfering RNA targeting SIRT3 was used in some experiments to examine the potential role of SIRT3. Cell death and mitochondrial membrane potential (Δψm) were analysed in cultured cells. Mitochondrial damage in mice was assessed using electron microscopy and markers for renal function. Expression of cyclophilin D, cytochrome c, and SIRT3, and the level of cyclophilin D acetylation were determined. RESULTS Hypoxia/reoxygenation of HK2 cells increased cell death, cytochrome C expression, and cyclophilin D acetylation, and decreased Δψm and SIRT3 expression (P<0.05). Dexmedetomidine attenuated these changes. The dexmedetomidine effects were enhanced by SIRT3 overexpression and eliminated by SIRT3 knockdown. I/R in mice damaged renal function, and increased histological lesions, mitochondrial damage, cytochrome c expression, and cyclophilin D acetylation, while SIRT3 activity was decreased by 51% (P<0.05). Dexmedetomidine inhibited these changes in mice expressing normal levels of SIRT3, but not in SIRT3-knockdown mice. CONCLUSIONS Dexmedetomidine appears to act, at least in part, by up-regulating SIRT3 to inhibit mitochondrial damage and cell apoptosis and thereby protect against renal I/R injury.
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Affiliation(s)
- Y Si
- Department of Anaesthesiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, People's Republic of China
| | - H Bao
- Department of Anaesthesiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, People's Republic of China.
| | - L Han
- Department of Anaesthesiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, People's Republic of China
| | - L Chen
- Department of Anaesthesiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, People's Republic of China
| | - L Zeng
- Department of Anaesthesiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, People's Republic of China
| | - L Jing
- Department of Anaesthesiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, People's Republic of China
| | - Y Xing
- Mechanical Engineering, Southeast University, Nanjing, People's Republic of China
| | - Y Geng
- Department of Anaesthesiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, People's Republic of China
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Liu WJ, Gong LG, Tan CM, Xing Y. [Experience from treatment of infection after internal fixation of fracture of maxillary sinus]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 31:475-477. [PMID: 29871289 DOI: 10.13201/j.issn.1001-1781.2017.06.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Indexed: 11/12/2022]
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Jia A, Xu S, Xing Y, Zhang W, Yu X, Zhao Y, Ming J, Ji Q. Prevalence and cardiometabolic risks of normal weight obesity in Chinese population: A nationwide study. Nutr Metab Cardiovasc Dis 2018; 28:1045-1053. [PMID: 30143410 DOI: 10.1016/j.numecd.2018.06.015] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 06/13/2018] [Accepted: 06/15/2018] [Indexed: 01/09/2023]
Abstract
BACKGROUND AND AIMS Several studies have reported increased cardiovascular risks in normal weight obesity (NWO) populations. We aimed to investigate the prevalence of NWO and its relationships with cardiometabolic risks in Chinese patients. METHODS AND RESULTS The data were from the 2007-2008 China National Diabetes and Metabolic Disorders Study. The body fat (BF) was measured using the biological impedance method. NWO was defined as a normal BMI (18.5-23.9 kg/m2) but with excess BF% (BF% ≥ 24% for men and ≥33% for women). 23,748 people (9633 males and 14,115 females) were enrolled and the prevalence of NWO was 9.5% for men, 6.06% for women. The prevalence risks of diabetes (odds ratio [OR]1.519, 95% confidence interval [CI] 1.262-1.828), Framingham risk score (FRS) ≥10% (OR 1.973, 95% CI 1.596-2.439), hypertension (OR 1.525, 95% CI 1.333-1.745), and metabolic syndrome Mets (OR 2.175, 95% CI 1.920-2.463) significantly increased in the NWO group compared with the normal group. Subgroup analyses showed that, after ruling out participants with abnormal waist circumference, the male group had similar findings to the overall population; but in the female group, the prevalence risks of FRS ≥10%, hypertension, and Mets increased, although the risk of diabetes did not. CONCLUSION NWO is in a relatively high prevalence in Chinese population, and the prevalence of NWO is higher in Chinese men compared to Chinese women. Cardiometabolic risks significantly increase in an NWO population, and such risks persist after excluding the effect of abdominal obesity.
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Affiliation(s)
- A Jia
- Department of Endocrinology, Xijing Hospital, Air Force Medical University, Xi'an, 710032, China; Department of Endocrinology, The First Hospital of Yulin, Yulin, 719000, China
| | - S Xu
- Department of Endocrinology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang, 441021, China; Department of Health Statistics, Faculty of Preventive Medicine, Air Force Medical University, Xi'an, 710032, China
| | - Y Xing
- Department of Endocrinology, Xijing Hospital, Air Force Medical University, Xi'an, 710032, China
| | - W Zhang
- Department of Endocrinology, Xijing Hospital, Air Force Medical University, Xi'an, 710032, China
| | - X Yu
- Department of Endocrinology, Xijing Hospital, Air Force Medical University, Xi'an, 710032, China
| | - Y Zhao
- Department of Endocrinology, The First Hospital of Yulin, Yulin, 719000, China
| | - J Ming
- Department of Endocrinology, Xijing Hospital, Air Force Medical University, Xi'an, 710032, China.
| | - Q Ji
- Department of Endocrinology, Xijing Hospital, Air Force Medical University, Xi'an, 710032, China.
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Garrett KA, Alcalá-Briseño RI, Andersen KF, Buddenhagen CE, Choudhury RA, Fulton JC, Hernandez Nopsa JF, Poudel R, Xing Y. Network Analysis: A Systems Framework to Address Grand Challenges in Plant Pathology. Annu Rev Phytopathol 2018; 56:559-580. [PMID: 29979928 DOI: 10.1146/annurev-phyto-080516-035326] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Plant pathology must address a number of challenges, most of which are characterized by complexity. Network analysis offers useful tools for addressing complex systems and an opportunity for synthesis within plant pathology and between it and relevant disciplines such as in the social sciences. We discuss applications of network analysis, which ultimately may be integrated together into more synthetic analyses of how to optimize plant disease management systems. The analysis of microbiome networks and tripartite phytobiome networks of host-vector-pathogen interactions offers promise for identifying biocontrol strategies and anticipating disease emergence. Linking epidemic network analysis with social network analysis will support strategies for sustainable agricultural development and for scaling up solutions for disease management. Statistical tools for evaluating networks, such as Bayesian network analysis and exponential random graph models, have been underused in plant pathology and are promising for informing strategies. We conclude with research priorities for network analysis applications in plant pathology.
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Affiliation(s)
- K A Garrett
- Plant Pathology Department, University of Florida, Gainesville, Florida 32611, USA;
- Institute for Sustainable Food Systems, University of Florida, Gainesville, Florida 32611, USA
- Emerging Pathogens Institute, University of Florida, Gainesville, Florida 32611, USA
| | - R I Alcalá-Briseño
- Plant Pathology Department, University of Florida, Gainesville, Florida 32611, USA;
- Institute for Sustainable Food Systems, University of Florida, Gainesville, Florida 32611, USA
- Emerging Pathogens Institute, University of Florida, Gainesville, Florida 32611, USA
| | - K F Andersen
- Plant Pathology Department, University of Florida, Gainesville, Florida 32611, USA;
- Institute for Sustainable Food Systems, University of Florida, Gainesville, Florida 32611, USA
- Emerging Pathogens Institute, University of Florida, Gainesville, Florida 32611, USA
| | - C E Buddenhagen
- Plant Pathology Department, University of Florida, Gainesville, Florida 32611, USA;
- Institute for Sustainable Food Systems, University of Florida, Gainesville, Florida 32611, USA
- Emerging Pathogens Institute, University of Florida, Gainesville, Florida 32611, USA
- Current address: AgResearch, Hamilton, New Zealand 3240
| | - R A Choudhury
- Plant Pathology Department, University of Florida, Gainesville, Florida 32611, USA;
- Institute for Sustainable Food Systems, University of Florida, Gainesville, Florida 32611, USA
- Emerging Pathogens Institute, University of Florida, Gainesville, Florida 32611, USA
| | - J C Fulton
- Plant Pathology Department, University of Florida, Gainesville, Florida 32611, USA;
- Institute for Sustainable Food Systems, University of Florida, Gainesville, Florida 32611, USA
- Emerging Pathogens Institute, University of Florida, Gainesville, Florida 32611, USA
| | - J F Hernandez Nopsa
- Plant Pathology Department, University of Florida, Gainesville, Florida 32611, USA;
- Institute for Sustainable Food Systems, University of Florida, Gainesville, Florida 32611, USA
- Emerging Pathogens Institute, University of Florida, Gainesville, Florida 32611, USA
- Current address: Corporación Colombiana de Investigación Agropecuaria, AGROSAVIA, Departamento de Semillas, Mosquera-Bogotá, Colombia 344300
| | - R Poudel
- Plant Pathology Department, University of Florida, Gainesville, Florida 32611, USA;
- Institute for Sustainable Food Systems, University of Florida, Gainesville, Florida 32611, USA
- Emerging Pathogens Institute, University of Florida, Gainesville, Florida 32611, USA
| | - Y Xing
- Plant Pathology Department, University of Florida, Gainesville, Florida 32611, USA;
- Institute for Sustainable Food Systems, University of Florida, Gainesville, Florida 32611, USA
- Emerging Pathogens Institute, University of Florida, Gainesville, Florida 32611, USA
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Liu F, Shi S, Zhu L, Xing Y, Lei J, Tian W, Wang J, Guan G. P6247Perturbations of the anti-ageing hormone Klotho in patients with diagonal earlobe crease. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6247] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- F Liu
- Shaanxi Provincial People's Hospital, Cardiovascular Department, Xian, China People's Republic of
| | - S Shi
- Shaanxi Provincial People's Hospital, Cardiovascular Department, Xian, China People's Republic of
| | - L Zhu
- Shaanxi Provincial People's Hospital, Cardiovascular Department, Xian, China People's Republic of
| | - Y Xing
- Shaanxi Provincial People's Hospital, Cardiovascular Department, Xian, China People's Republic of
| | - J Lei
- Shaanxi Provincial People's Hospital, Cardiovascular Department, Xian, China People's Republic of
| | - W Tian
- Shaanxi Provincial People's Hospital, Cardiovascular Department, Xian, China People's Republic of
| | - J Wang
- Shaanxi Provincial People's Hospital, Cardiovascular Department, Xian, China People's Republic of
| | - G Guan
- Shaanxi Provincial People's Hospital, Cardiovascular Department, Xian, China People's Republic of
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Xing Y, Wang JZ, Pu CW, Qu CX, Shang K, Dong N, Wu P, Wang HF. [Clinical Application Value of Peripheral Blood Diagnostic Report]. Zhonghua Yi Xue Za Zhi 2018; 97:2987-2995. [PMID: 29061005 DOI: 10.3760/cma.j.issn.0376-2491.2017.38.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the clinical application value of peripheral blood diagnostic report. Methods: 557 peripheral blood diagnostic reports were collected from Peking University First Hospital, YANDA LU DAOPEI Hospital and Beijing United Family Hospital. The results were analyzed and summarized according to different blood cell morphology character for the first time and review cases, respectively. Results: Two hundred and one samples from first time patients were found abnormal complete blood count or leukocyte differential count, they were summarized as anemia, anemia accompanied with leukopenia or thrombopenia, abnormal white blood cell count or leukocyte differential count and abnormal platelet count. Each condition was further distinguished on the basis of different morphology character. Initial diagnosis or further examination could be proposed if abnormal morphology was specific or typical, when blood cell morphology was atypical or normal, the morphology was described objectively. 22 review cases included many benign and malignant disorders such as acute leukemia, chronic leukemia, myelodysplastic syndrome, multiple myeloma, infectious mononucleosis and so on. Suggestion of therapeutic effect, progression of diseases or further examination could be present according to complete blood cell count and morphology character. Conclusion: Peripheral blood diagnostic report can provide more comprehensive and accurate information for clinic, and propose important advisory opinions for primary diagnosis, differential diagnosis, treatment monitoring and progression assessment.
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Affiliation(s)
- Y Xing
- Clinnical Laboratory, Peking University First Hospital, Beijing 100034, China
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63
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Xing Y, Quan C. Reference-plane-based fast pixel-by-pixel absolute phase retrieval for height measurement. Appl Opt 2018; 57:4901-4908. [PMID: 30118108 DOI: 10.1364/ao.57.004901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 05/14/2018] [Indexed: 06/08/2023]
Abstract
Absolute phase retrieval is essential for height measurement in digital fringe projection. However, projections of additional structured patterns that are normally required for phase unwrapping increase the measurement complexity. In this paper, we propose two reference-plane-based pixel-by-pixel absolute phase retrieval techniques with as few projections as possible, suitable for different object depth ranges. The wrapped phase on the object is absolutely unwrapped by referring just to the absolute phase map on the reference plane. Single-frequency absolute phase retrieval with one-reference-plane-based calibration is first proposed for objects within a height limit that equals a calibrated system constant. To extend the measurement depth range, dual-frequency absolute phase retrieval with two parallel reference planes is further proposed. The additional low frequency is used to choose the unwrapping reference from the two reference plane phases for unwrapping the high-frequency phase. Moreover, the proposed techniques are capable of high-frequency absolute phase unwrapping for objects with step-height surface discontinuities. Experiments have been conducted to demonstrate the efficiency of the proposed two techniques.
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64
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Xing Y, Xu B, Sheng X, Xu C, Peng F, Sun Y, Wang S, Guo H. Efficacy and safety of uninterrupted low-intensity warfarin for cryoballoon ablation of atrial fibrillation in the elderly: A pilot study. J Clin Pharm Ther 2018; 43:401-407. [PMID: 29484682 DOI: 10.1111/jcpt.12671] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 11/16/2017] [Accepted: 01/18/2018] [Indexed: 11/30/2022]
Abstract
WHAT IS KNOWN AND OBJECTIVE Uninterrupted warfarin during cryoballoon ablation (CB-A) of atrial fibrillation (AF) has been widely accepted. However, to our knowledge, no previous studies exist investigating the optimal intensity of anticoagulation with warfarin for CB-A. This study aimed to evaluate the efficacy and safety of uninterrupted low-intensity warfarin for CB-A of AF in the elderly. METHODS Paroxysmal AF patients (age ≥ 70 years) who underwent CB-A were enrolled prospectively. The participants were stratified into 2 groups based on international normalized ratio (INR) before ablation (INR in group A: 1.5 to 2.0; INR in group B: 2.0-2.5). Primary endpoints included periprocedural thromboembolic complications and major bleeding. Secondary endpoints were new asymptomatic cerebral emboli (ACE) and minor bleeding. RESULTS AND DISCUSSION A total of 144 patients were enrolled (group A: 65; group B: 79). In group A, the use of concomitant antiplatelet drugs was more common. Also, the mean HAS-BLED score was significantly higher (2.4 ± 0.8 vs 2.0 ± 0.6, P < .01) and the mean activated clotting time (ACT) during the procedure was significantly lower (302 ± 14 s vs 311 ± 11 s, P < .01). Other clinical characteristics were balanced between the 2 groups. No thromboembolic complications and major bleeding occurred in either group. The incidence of periprocedural ACE was comparable between the 2 groups (9.2% vs 6.3%, P = .74). The incidence of minor bleeding in group A and group B was 4.6% and 11.4%, respectively (P = .14). WHAT IS NEW AND CONCLUSION Compared with standard-intensity warfarin, uninterrupted low-intensity warfarin might not increase the incidence of thromboembolic complications and might be associated with less bleeding risk during the perioperative period of cryoballoon ablation in the elderly. Large trials are needed to confirm these results.
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Affiliation(s)
- Y Xing
- Department of Cardiology, Shaoxing People's Hospital (Shaoxing Hospital of Zhejiang University), Shaoxing, China
| | - B Xu
- Department of Cardiology, Shaoxing People's Hospital (Shaoxing Hospital of Zhejiang University), Shaoxing, China
| | - X Sheng
- Department of Cardiology, Sir Run Run Shaw Hospital Affiliated to Medical College of Zhejiang University, Hangzhou, China
| | - C Xu
- Department of Cardiology, Shaoxing People's Hospital (Shaoxing Hospital of Zhejiang University), Shaoxing, China
| | - F Peng
- Department of Cardiology, Shaoxing People's Hospital (Shaoxing Hospital of Zhejiang University), Shaoxing, China
| | - Y Sun
- Department of Cardiology, Shaoxing People's Hospital (Shaoxing Hospital of Zhejiang University), Shaoxing, China
| | - S Wang
- Department of Cardiology, Shaoxing People's Hospital (Shaoxing Hospital of Zhejiang University), Shaoxing, China
| | - H Guo
- Department of Cardiology, Shaoxing People's Hospital (Shaoxing Hospital of Zhejiang University), Shaoxing, China
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Yang X, Zhao Q, Parris AB, Howard EW, Zhao M, Guo Z, Xing Y, Ma Z. Abstract P6-07-04: Rapamycin inhibits the stemness of mammary epithelial cells in the premalignant tissues of MMTV-ErbB2 transgenic mice. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p6-07-04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Rapamycin, a well-studied mTOR inhibitor, has been demonstrated to inhibit mammary carcinogenesis at multiple stages, including initiation, invasion, and metastasis, in preclinical animal models. Nevertheless, the cancer preventative potential and underlying mechanisms remain unclear, especially in individual breast cancer subtypes like ErbB2/Her2-positive breast cancers. ErbB2 amplification/overexpression is a particular clinical concern because it occurs in approximately one-third of human breast cancers and is associated with poor prognosis. Therefore, we used MMTV-ErbB2 transgenic mice as our model system to test the efficacy of rapamycin in the prevention of ErbB2-mediated mammary tumor development. Our initial data provided proof of concept regarding the anti-cancer effects of rapamycin in vivo. Indeed, rapamycin (1.5 mg/kg/day for 12 days) significantly reduced the volume and weight of syngeneic 78617 cell-derived mammary tumors in MMTV-ErbB2 mice, despite observed decreases in CD4+ and CD8+ immune cells. Since advanced mammary gland development can serve as an indicator of breast cancer risk, we investigated the effects of rapamycin on mammary gland development in MMTV-ErbB2 mice that were treated with low-dose rapamycin (1 mg/kg/day) between weeks 10 and 20 of age. As such, rapamycin significantly attenuated mammary morphogenesis at 20 weeks of age, as indicated by decreased branching density, ductal elongation, and proliferative index of the premalignant mammary glands. Flow cytometric analysis of isolated primary mammary epithelial cells (MECs) was performed using CD24 and CD49f markers to identify MEC populations. We found that rapamycin has a significant impact on MEC stemness based on changes in luminal (CD24highCD49flow), mammary stem cell (MaSC)-enriched (CD24highCD49fhigh), and myoepithelial/basal (CD24low/highCD49fhigh) MEC populations. We also used CD61 and CD49f markers to identify a population enriched with luminal progenitor cells (CD61highCD49fhigh) that was selectively inhibited by rapamycin. Consistent with our flow cytometric analyses, rapamycin inhibited the luminal progenitor cell-enriched population, self-renewal, and anchorage-independent cell growth of primary MECs, as demonstrated by colony-forming cell, mammosphere, and 3D culture assays, respectively. These functional stem cell assays further corroborate that rapamycin suppresses the stemness of primary MECs. Molecular analysis of MECs demonstrated that rapamycin inhibited mTOR signaling, as expected. Importantly, rapamycin also significantly suppressed the receptor tyrosine kinase/ErbB2, estrogen receptor, Wnt/β-catenin, and TGFβ/Smad3 signaling pathways prior to malignant transformation. Collectively, our study provides evidence that rapamycin has potential cancer preventative effects in the mammary glands of MMTV-ErbB2 mice during the premalignant risk window. These rapamycin-induced anti-cancer effects ultimately highlight the promising clinical significance of rapamycin for the prevention and treatment of human ErbB2-overexpressing breast cancers.
Citation Format: Yang X, Zhao Q, Parris AB, Howard EW, Zhao M, Guo Z, Xing Y, Ma Z. Rapamycin inhibits the stemness of mammary epithelial cells in the premalignant tissues of MMTV-ErbB2 transgenic mice [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P6-07-04.
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Affiliation(s)
- X Yang
- North Carolina Central University, Kannapolis, NC; Basic Medical College of Zhengzhou University, Zhengzhou, Henan, China
| | - Q Zhao
- North Carolina Central University, Kannapolis, NC; Basic Medical College of Zhengzhou University, Zhengzhou, Henan, China
| | - AB Parris
- North Carolina Central University, Kannapolis, NC; Basic Medical College of Zhengzhou University, Zhengzhou, Henan, China
| | - EW Howard
- North Carolina Central University, Kannapolis, NC; Basic Medical College of Zhengzhou University, Zhengzhou, Henan, China
| | - M Zhao
- North Carolina Central University, Kannapolis, NC; Basic Medical College of Zhengzhou University, Zhengzhou, Henan, China
| | - Z Guo
- North Carolina Central University, Kannapolis, NC; Basic Medical College of Zhengzhou University, Zhengzhou, Henan, China
| | - Y Xing
- North Carolina Central University, Kannapolis, NC; Basic Medical College of Zhengzhou University, Zhengzhou, Henan, China
| | - Z Ma
- North Carolina Central University, Kannapolis, NC; Basic Medical College of Zhengzhou University, Zhengzhou, Henan, China
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Lu M, Zhang Y, Xing Y. Attention on patent foramen ovale and its related paroxysmal neurological diseases. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Xing Y, Jiang C, Hua WY, Liu F, Zhao Z, Ding YJ, Wang L, Li J. [Survey on a public health emergency event caused by norovirus]. Zhonghua Liu Xing Bing Xue Za Zhi 2017; 38:1174-1178. [PMID: 28910926 DOI: 10.3760/cma.j.issn.0254-6450.2017.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Objective: To study the epidemiological characteristics of an outbreak caused by norovirus infection in a school in Haidian district, Beijing. Methods: Basic information of the school and data related to patients in the fields survey were collected and analyzed descriptively. Laboratory tests were performed to test the stool and anal swab specimens of both patients and cooks as well as the environmental specimens. Risk factors related to the incidence were analyzed through a case-control study. Results: A total number of 119 patients were identified in the school. Clinical symptoms were mild, mainly involving vomiting (94.1%, 112/119), abdominal pain (46.2%, 55/119), but no need of hospitalization. The average age of the student patients was 6.38, with minimum and maximum between 5 and 11. Patients were found in 22 classes, but mainly in grade 1 and class 7 where 35 patients were found (30.17%). A total of 134 specimens of rectal swabs and stool were collected, with 7 positive for norovirus and 6 for sappovirus. Salmonella, Shigella, lapactic Escherichia coli and Vibrio parahaemolyticus were not found in on dinner sets, residual foods, bottled water or in drinking fountains. Index on water hygiene was unsatisfactory in classrooms or dormitories where more cases were found. Accommodation, north-facing-classrooms, abnormal water hygiene indexes were found related to the occurance of the disease (P<0.05). Conclusions: The outbreak was identified a gastroenteritis infection, caused by norovirus with symptoms as vomiting and abdominal pain. This event reached the reporting standards of public health emergencies-level Ⅳ. Discovery and isolation of the first case was not timely while transmission of the disease might be water-borne. Surveillance programs on symptoms, disinfection of vomit and stool in places like nurseries and schools should be strengthened to prevent the norovirus outbreak.
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Affiliation(s)
- Y Xing
- Haidian Center for Disease Control and Prevention, Beijing 100094, China
| | - C Jiang
- Haidian Center for Disease Control and Prevention, Beijing 100094, China
| | - W Y Hua
- Infectious and Endemic Disease Control Section, Haidian Center for Disease Control and Prevention, Beijing 100094, China
| | - F Liu
- Infectious and Endemic Disease Control Section, Haidian Center for Disease Control and Prevention, Beijing 100094, China
| | - Z Zhao
- Food Health Section, Haidian Center for Disease Control and Prevention, Beijing 100094, China
| | - Y J Ding
- Food Health Section, Haidian Center for Disease Control and Prevention, Beijing 100094, China
| | - L Wang
- Disinfection Section, Haidian Center for Disease Control and Prevention, Beijing 100094, China
| | - J Li
- Haidian Center for Disease Control and Prevention, Beijing 100094, China
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Lu C, Yu H, Xing Y, Cheng YY, Wu QY, Li SM, Fu HY, Zhang X, Hao LL, Liu D. Haplotype diversity in MC1R locus between the Min and white-haired pig breeds. ACTA AGR SCAND A-AN 2017. [DOI: 10.1080/09064702.2017.1337215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- C. Lu
- College of Animal Science, Jilin University, Changchun, People’s Republic of China
| | - H. Yu
- College of Animal Science, Jilin University, Changchun, People’s Republic of China
| | - Y. Xing
- College of Animal Science, Jilin University, Changchun, People’s Republic of China
| | - Y.-Y. Cheng
- College of Animal Science, Jilin University, Changchun, People’s Republic of China
| | - Q.-Y. Wu
- College of Animal Science, Jilin University, Changchun, People’s Republic of China
| | - S.-M. Li
- College of Animal Science, Jilin University, Changchun, People’s Republic of China
| | - H.-Y. Fu
- College of Animal Science, Jilin University, Changchun, People’s Republic of China
| | - X. Zhang
- College of Animal Science, Jilin University, Changchun, People’s Republic of China
| | - L.-L. Hao
- College of Animal Science, Jilin University, Changchun, People’s Republic of China
| | - D. Liu
- Heilongjiang Academy of Agricultural Sciences, Institute of Animal Husbandry, Harbin, People’s Republic of China
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Li X, Liu ZS, Zhao DG, Jiang DS, Chen P, Zhu JJ, Yang J, Liu W, He XG, Li XJ, Liang F, Liu ST, Xing Y, Zhang LQ, Li M, Zhang J. Evolution of differential efficiency in blue InGaN laser diodes before and after a lasing threshold. Appl Opt 2017; 56:2462-2466. [PMID: 28375352 DOI: 10.1364/ao.56.002462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The optical power emitting from the cavity facet of blue InGaN-based laser diodes (LDs) is measured to investigate the efficiency droop. The efficiency droop behavior of blue InGaN-based LDs near the threshold is confirmed in our experiments. From measurements of optical power at different wavelengths, it is analyzed that the droop behavior of LDs can be ascribed to the efficiency reduction of longer wavelengths. The efficiency of longer wavelengths is subject to the carrier occupation process in quantum levels. In addition, it is found that the droop behavior may be largely affected by the relatively large threshold current of InGaN-based LDs and the screening effect of polarization, and it can be suppressed by stimulated emission.
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Abstract
Bone desensitization after mechanical loading is essential for bone to adapt to its mechanical environment. However, the desensitization mechanism is unknown. Previous studies suggest that G protein-coupled receptors (GPCRs), including P2Y and parathyroid hormone receptors, play important roles in osteoblast mechanobiology. Thus, for the present research, we examined the role of G protein-coupled receptor kinase 2 (GRK2) in osteoblast desensitization after exposure to mechanical stimulation. We first showed the existence of osteoblast desensitization after mechanical stimulation based on cytosol Ca2+ and phosphorylated ERK1/2 activities, detected using a fluorescent Ca2+-sensitive dye and western blotting, respectively. We then demonstrated that GRK2 overexpression in MC3T3-E1 cells inhibits flow-induced ERK1/2 phosphorylation, while siRNA knockdown of GRK2 enhances ERK1/2 phosphorylation. Additionally, we found that GRK2 overexpression in MC3T3-E1 cells inhibits cyclooxygenase-2 mRNA expression in the short term and alkaline phosphatase activity in the long term. More importantly, we discovered that GRK2 translocated to the cell membrane shortly after flow stimulation - a step necessary for GPCR desensitization. Previously, we have demonstrated that P2Y2 purinergic receptors, one type of GPCRs, are involved in various flow-induced osteoblastic responses. In this research, we also showed that GRK2 overexpression does not affect ATP release. Accordingly, GRK2 is able to inhibit flow-induced osteoblast responses possibly through desensitizing P2Y2 receptors.
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Affiliation(s)
- Y Xing
- Beijing Key Laboratory of Rehabilitation Technical Aids for Old-Age Disability, National Research Center for Rehabilitation Technical Aids, Beijing, China Department of Orthopaedics and Rehabilitation, The Pennsylvania State University College of Medicine, Hershey, PA, USA
| | | | - X Shan
- Beijing Key Laboratory of Rehabilitation Technical Aids for Old-Age Disability, National Research Center for Rehabilitation Technical Aids, Beijing, China Department of Orthopaedics and Rehabilitation, The Pennsylvania State University College of Medicine, Hershey, PA, USA
| | - L Wang
- Beijing Key Laboratory of Rehabilitation Technical Aids for Old-Age Disability, National Research Center for Rehabilitation Technical Aids, Beijing, China Department of Orthopaedics and Rehabilitation, The Pennsylvania State University College of Medicine, Hershey, PA, USA
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Martin-Bastida A, Lao-Kaim NP, Loane C, Politis M, Roussakis AA, Valle-Guzman N, Kefalopoulou Z, Paul-Visse G, Widner H, Xing Y, Schwarz ST, Auer DP, Foltynie T, Barker RA, Piccini P. Motor associations of iron accumulation in deep grey matter nuclei in Parkinson's disease: a cross-sectional study of iron-related magnetic resonance imaging susceptibility. Eur J Neurol 2016; 24:357-365. [PMID: 27982501 DOI: 10.1111/ene.13208] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [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: 05/13/2016] [Accepted: 10/25/2016] [Indexed: 11/26/2022]
Abstract
BACKGROUND AND PURPOSE To determine whether iron deposition in deep brain nuclei assessed using high-pass filtered phase imaging plays a role in motor disease severity in Parkinson's disease (PD). METHODS Seventy patients with mild to moderate PD and 20 age- and gender-matched healthy volunteers (HVs) underwent susceptibility-weighted imaging on a 3 T magnetic resonance imaging scanner. Phase shifts (radians) in deep brain nuclei were derived from high-pass filtered phase images and compared between groups. Analysis of clinical laterality and correlations with motor severity (Unified Parkinson's Disease Rating Scale, Part III, UPDRS-III) were performed. Phase shifts (in radians) were compared between HVs and three PD subgroups divided according to UPDRS-III scores using analysis of covariance, adjusting for age and regional area. RESULTS Parkinson's disease patients had significantly (P < 0.001) higher radians than HVs bilaterally in the putamen, globus pallidus and substantia nigra (SN). The SN contralateral to the most affected side showed higher radians (P < 0.001) compared to the less affected side. SN radians positively correlated with UPDRS-III and bradykinesia-rigidity subscores, but not with tremor subscores. ancova followed by post hoc Bonferroni-adjusted pairwise comparisons revealed that SN radians were significantly greater in the PD subgroup with higher UPDRS-III scores compared to both lowest UPDRS-III PD and HV groups (P < 0.001). CONCLUSIONS Increased nigral iron accumulation in PD appears to be stratified according to disease motor severity and correlates with symptoms related to dopaminergic neurodegeneration. This semi-quantitative in vivo iron assessment could prove useful for objectively monitoring PD progression, especially in clinical trials concerning iron chelation therapies.
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Affiliation(s)
- A Martin-Bastida
- Centre for Neurodegeneration and Neuroinflammation, Division of Brain Sciences, Imperial College London, London, UK
| | - N P Lao-Kaim
- Centre for Neurodegeneration and Neuroinflammation, Division of Brain Sciences, Imperial College London, London, UK
| | - C Loane
- Centre for Neurodegeneration and Neuroinflammation, Division of Brain Sciences, Imperial College London, London, UK.,Memory Research Group, Nuffield Department of Clinical Neurosciences, Medical Science Division, University of Oxford, Oxford, UK
| | - M Politis
- Centre for Neurodegeneration and Neuroinflammation, Division of Brain Sciences, Imperial College London, London, UK.,Neurodegeneration Imaging Group, Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK
| | - A A Roussakis
- Centre for Neurodegeneration and Neuroinflammation, Division of Brain Sciences, Imperial College London, London, UK
| | - N Valle-Guzman
- John Van Geest Centre for Brain Repair, University of Cambridge, Cambridge, UK
| | - Z Kefalopoulou
- Sobell Department of Motor Neuroscience, UCL Institute of Neurology, National Hospital for Neurology and Neurosurgery, London, UK
| | - G Paul-Visse
- Translational Neurology Group, Department of Clinical Sciences, Wallenberg Neuroscience Centre, Lund University, Lund, Sweden
| | - H Widner
- Division of Neurology, Department of Clinical Sciences, Lund University, Skåne University Hospital, Lund, Sweden
| | - Y Xing
- Radiological Sciences, Division of Clinical Neuroscience, University of Nottingham, Queen's Medical Centre Nottingham, Nottingham, UK
| | - S T Schwarz
- Radiological Sciences, Division of Clinical Neuroscience, University of Nottingham, Queen's Medical Centre Nottingham, Nottingham, UK
| | - D P Auer
- Radiological Sciences, Division of Clinical Neuroscience, University of Nottingham, Queen's Medical Centre Nottingham, Nottingham, UK
| | - T Foltynie
- Sobell Department of Motor Neuroscience, UCL Institute of Neurology, National Hospital for Neurology and Neurosurgery, London, UK
| | - R A Barker
- Department of Clinical Neuroscience, University of Cambridge, Cambridge, UK.,MRC Cognition and Brain Sciences Unit, University of Cambridge, Cambridge, UK
| | - P Piccini
- Centre for Neurodegeneration and Neuroinflammation, Division of Brain Sciences, Imperial College London, London, UK
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Xing Y, Quan C, Tay CJ. Multi-subzone algorithm for absolute phase retrieval in digital fringe projection profilometry. Appl Opt 2016; 55:9774-9781. [PMID: 27958470 DOI: 10.1364/ao.55.009774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Codewords are important in encoded absolute phase retrieval techniques such as two-frequency, gray-code, and phase-coding. Each sinusoidal fringe is marked by a unique codeword so that an absolute fringe order can be determined by decoding the codeword. However, due to the limited number of unique codewords, sinusoidal fringe patterns do not contain high-frequency fringes without the use of additional patterns. A multi-subzone coding and decoding algorithm is thus proposed to overcome this limitation. Three multi-subzone coding methods based on two-frequency, gray-code, and phase-coding techniques are presented. The coding creates multiple subzones of unique codewords and the decoding enables it to use non-unique codewords to identify absolute fringe order. Specifically, the range of fringe order is estimated by the use of a wrapped phase map and the absolute fringe order is identified by a codeword. Experimental studies demonstrate the advantages of the proposed algorithm over existing coding methods. The proposed algorithm is suitable to measure objects with large step-height surface discontinuities.
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Li Y, Zhang L, Wang X, Chen M, Liu Y, Xing Y, Wang X, Gao S, Zhu D. Elk-1-mediated 15-lipoxygenase expression is required for hypoxia-induced pulmonary vascular adventitial fibroblast dynamics. Acta Physiol (Oxf) 2016; 218:276-289. [PMID: 27174674 DOI: 10.1111/apha.12711] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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: 11/01/2015] [Revised: 04/26/2016] [Accepted: 05/09/2016] [Indexed: 12/20/2022]
Abstract
AIM 15-Lipoxygenase (15-LO) is an important factor in the pathogenesis of pulmonary artery hypertension (PAH). However, the role of 15-LO in the adventitia of the pulmonary arterial wall is unclear. The aim of this study was to explore the role of 15-LO in the modulation of pulmonary adventitial fibroblast (PAF) dynamics. METHODS Rats were exposed to normoxic or hypoxic (fraction of inspired O2 = 0.12) treatments for 7 days. PAF proliferation and cell cycle alterations were measured by MTT assay, cell immunofluorescence, flow cytometry and Western blot analysis. The 15-LO promoter was analysed by luciferase reporter and ChIP assays. RESULTS Our results showed that hypoxia induced 15-LO expression in PAFs both in vivo and in vitro. In addition, hypoxia stimulated JNK phosphorylation in PAFs. Blocking 15-LO or JNK suppressed 15-LO-induced PAF proliferation and cell cycle alterations. The inhibition of p27kipl by gene silencing attenuated 15-LO-induced PAF proliferation and cell cycle alterations. Furthermore, JNK inhibition or Elk-1 knockdown suppressed hypoxia-induced 15-LO expression in PAFs. Luciferase reporter and ChIP assays revealed that the 15-LO promoter contains Elk-1-binding sites and also that Elk-1 increased the hypoxia-induced activity of the 15-LO promoter. CONCLUSION These results suggest that hypoxia promotes changes in the cellular dynamics of PAFs by inducing 15-LO expression, which leads to vascular adventitial remodelling. The modulation of p27kipl expression by 15-LO enhances PAF proliferation and cell cycle alterations. Furthermore, the JNK-dependent increase in Elk-1 signalling is required for hypoxia-induced 15-LO expression in PAFs.
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Affiliation(s)
- Y. Li
- Department of Pharmacology; Harbin Medical University-Daqing; Daqing Heilongjiang China
- Biopharmaceutical Institute of the Heilongjiang Academy of Medical Sciences; Harbin Heilongjiang China
| | - L. Zhang
- Department of Pharmacology; Harbin Medical University-Daqing; Daqing Heilongjiang China
| | - X. Wang
- Department of Pharmacology; Harbin Medical University-Daqing; Daqing Heilongjiang China
| | - M. Chen
- Department of Pharmacology; Harbin Medical University-Daqing; Daqing Heilongjiang China
| | - Y. Liu
- Department of Pharmacology; Harbin Medical University-Daqing; Daqing Heilongjiang China
| | - Y. Xing
- Department of Pharmacology; Harbin Medical University-Daqing; Daqing Heilongjiang China
| | - X. Wang
- Department of Pharmacology; Harbin Medical University-Daqing; Daqing Heilongjiang China
| | - S. Gao
- Biopharmaceutical Institute of the Heilongjiang Academy of Medical Sciences; Harbin Heilongjiang China
| | - D. Zhu
- Department of Pharmacology; Harbin Medical University-Daqing; Daqing Heilongjiang China
- Biopharmaceutical Institute of the Heilongjiang Academy of Medical Sciences; Harbin Heilongjiang China
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74
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Zhu J, Xing Y. [Effect of intrauterine growth retardation on the structure and function of the kidney]. Zhonghua Er Ke Za Zhi 2016; 54:872-874. [PMID: 27806803 DOI: 10.3760/cma.j.issn.0578-1310.2016.11.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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75
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Affiliation(s)
- C. Wang
- State Key Laboratory of Reproductive Medicine, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, China
| | - J. Cao
- State Key Laboratory of Reproductive Medicine, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, China
| | - Y. Xing
- State Key Laboratory of Reproductive Medicine, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, China
| | - D. Pu
- State Key Laboratory of Reproductive Medicine, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, China
| | - J. Liu
- State Key Laboratory of Reproductive Medicine, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, China
| | - J. Wu
- State Key Laboratory of Reproductive Medicine, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Nanjing Medical University, Nanjing Medical University, Nanjing, China
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76
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Ma L, Hu X, Li N, Xing Y. P7004 Screen of transgenic integration sites and construction of site-specific transgenic pig by CRISPR-Cas9. J Anim Sci 2016. [DOI: 10.2527/jas2016.94supplement4177a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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77
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Tan T, Xing Y, Hu X, Li N. P7006 Generation of a porcine model of obesity and complications by leptin knockout. J Anim Sci 2016. [DOI: 10.2527/jas2016.94supplement4178a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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78
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Hu Y, Xing Y, Hu X, Li N. P6020 Deficiency of Trim63 leads to hypertrophic cardiomyopathy in pig. J Anim Sci 2016. [DOI: 10.2527/jas2016.94supplement4158x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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79
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Chen J, Li N, Zhao Y, Hu X, Xing Y. P7008 Characterization of CD163 modification pig for PRRSV resistance. J Anim Sci 2016. [DOI: 10.2527/jas2016.94supplement4179a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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80
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Xing Y, Gill CA. P4048 Comparison of three methods to discover copy number variants in Nellore and Angus cattle. J Anim Sci 2016. [DOI: 10.2527/jas2016.94supplement4102x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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81
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Fu L, Matsuyama I, Chiba T, Xing Y, Korenaga T, Guo Z, Fu X, Nakayama J, Mori M, Higuchi K. Extrahepatic Expression of Apolipoprotein A-II in Mouse Tissues: Possible Contribution to Mouse Senile Amyloidosis. J Histochem Cytochem 2016; 49:739-48. [PMID: 11373320 DOI: 10.1177/002215540104900607] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Apolipoprotein A-II (apoA-II), an apolipoprotein in serum high-density lipoprotein, is a precursor of mouse senile amyloid fibrils. The liver has been considered to be the primary site of synthesis. However, we performed nonradioactive in situ hybridization analysis in tissue sections from young and old amyloidogenic (R1.P1- Apoa2 c ) and amyloid-resistant (SAMR1) mice and revealed that other tissues in addition to the liver synthesize apoA-II. We found a strong hybridization signal in the basal cells of the squamous epithelium and the chief cells of the fundic gland in the stomach, the crypt cells and a small portion of the absorptive epithelial cells in the small intestine, the basal cells of the tongue mucosa, and the basal cells of the epidermis and hair follicles in the skin in both mouse strains. Expression of apoA-II mRNA in those tissues was also examined by RT-PCR analysis. Immunolocalization of apoA-II protein also indicated the cellular localization of apoA-II. ApoA-II transcription was not observed in the heart. Amyloid deposition was observed around the cells expressing apoA-II mRNA in the old R1.P1- Apoa2 c mice. These results demonstrate that the apoA-II mRNA is transcribed and translated in various extrahepatic tissues and suggest a possible contribution of apoA-II synthesized in these tissues to amyloid deposition.
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Affiliation(s)
- L Fu
- Department of Aging Angiology, Shinshu University School of Medicine, Matsumoto, Japan
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82
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Chen J, Zhao MF, Cao XL, Meng JX, Xing Y, He XY, Jin X, Xu P, Jiang YY. [Effects of iron overload on the peripheral blood T cells in mice]. Zhonghua Xue Ye Xue Za Zhi 2016; 37:535-7. [PMID: 27431085 PMCID: PMC7348332 DOI: 10.3760/cma.j.issn.0253-2727.2016.06.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Indexed: 11/05/2022]
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83
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Xing Y, Macq B, Janssens G, Bondar L. SU-F-J-208: Prompt Gamma Imaging-Based Prediction of Bragg Peak Position for Realistic Treatment Error Scenarios. Med Phys 2016. [DOI: 10.1118/1.4956116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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84
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Zhao J, Hu W, Xing Y, Wu X, Li Y. SU-D-BRC-03: Development and Validation of an Online 2D Dose Verification System for Daily Patient Plan Delivery Accuracy Check. Med Phys 2016. [DOI: 10.1118/1.4955622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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85
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Zhao J, Hu W, Xing Y, Wu X, Li Y. SU-F-T-190: Homogeneity Study of Proton and Heavy Ion Scanning Beams Based On Different Compositions of Spot Sizes (FWHM) and Grid Sizes. Med Phys 2016. [DOI: 10.1118/1.4956327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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86
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Cao XL, Zhao MF, Li DG, Xing Y, Zhang YC, Chen J, He XY, Cui R, Meng JX, Xiao X, Mu J, Jiang YY, Wu RM. [Establishment of macrophage model of iron overload in vitro and the injury induced by oxidative stress on macrophage with iron overload]. Zhonghua Yi Xue Za Zhi 2016; 96:129-33. [PMID: 26792697 DOI: 10.3760/cma.j.issn.0376-2491.2016.02.012] [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 establish macrophage iron overload model in vitro by co-culture macrophages with iron, and to explore the effect of iron overload on cell reactive oxygen species (ROS) and the impact of ROS on macrophages. METHOD Iron overload group were treated with different concentrations (0, 5, 10, 20, 40, 80 μmol/L respectively) of ferric ammonium citrate (FAC). The control group was the group of macrophages without FAC treatment. We detected the number and state of cells, metabolic activity, the change of phagocytosis, the levels of ROS and reactive nitrogen, and changes of related oxidative stress signaling pathways in different groups. Changes in the above indexes were detected after application of deferasirox (DFX) to remove iron and the antioxidant N -acetylcysteine (NAC) to clear excess oxidative stress. RESULTS (1)The levels of labile iron pool (LIP) in macrophages co-cultivated with iron was increased with the increase of iron concentration in a dose-dependent manner. The LIP levels was the highest in the macrophages treated with 80 μmol/L. (2)The increase of FAC concentration, the metabolic activity of macrophages in the 5 FAC-treated groups decreased to 51.58%, 40.98%, 16.23%, 3.46%, and 0.05% of the activity level of the control group (all P< 0.05). The group with the metabolic activity decreased to 16.23% (20 μmol/L) was selected as the iron overload group for the following experiments. (3)Compared with the control group, the number of macrophages in the iron overload group reduced to 32.80% (P<0.05), and the state of cells changed from adherence to partial suspension. The phagocytosis of macrophages in the iron overload group reduced to 20.40% of the control group (P<0.05). (4)Our further experiment showed that the levels of ROS and the activity nitrogen in the iron overload group increased by 7.71-and 1.45-fold compared with the control group (both P<0.05). The RT-PCR showed up-regulated mRNA expression of genes related with ROS production, i. e. nicotinamide adenine dinucleotide phosphate oxidase 4 (NOX 4) gene related with ROS production and inducible nitric oxide synthase (iNOS) gene related with reactive nitrogen production, down-regulated mRNA expression of glutathione peroxidase 1 (GPX1) gene which participated in ROS clearance. Moreover, mRNA expression of phosphatidylinositol-3-kinase (PI3K) gene involved in oxidative stress signaling pathway in the iron overload group was up-regulated, while fork head protein O3 (FOXO3) which regulated oxidative stress through negative feedback showed a down-regulation level of mRNA expression compared with the control group. (5)After iron chelation and antioxidant treatment, the above-mentioned damage in the iron overload group were partially reversed. CONCLUSIONS The damages of iron overload on macrophages may be mediated by inducing oxidative stress and activating oxidative stress signaling pathways. Our established model provides a method to explore the mechanism of iron overload on macrophage, and may shed some new light on possible therapeutic target in treating iron overload patients.
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Affiliation(s)
- X L Cao
- Department of Hematology, First Central Clinical College of Tianjin Medical University, Tianjin First Central Hospital, Tianjin 300192, China
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Pu D, Xing Y, Gao Y, Gu L, Wu J. Erratum to “Gene variation and premature ovarian failure: a meta-analysis” [Eur. J. Obstet. Gynecol. Reprod. Biol. 182 (2014) 226–237]. Eur J Obstet Gynecol Reprod Biol 2016; 198:179. [DOI: 10.1016/j.ejogrb.2015.11.042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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88
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Xing Y, Zhang HM, Fu HL, Liu H, Sun Y, Peng JP, Wang F, Lin X, Ma XC, Xue QK, Wang J, Xie XC. Quantum Griffiths singularity of superconductor-metal transition in Ga thin films. Science 2015; 350:542-5. [DOI: 10.1126/science.aaa7154] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Accepted: 09/21/2015] [Indexed: 11/02/2022]
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89
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Wang XL, Li CJ, Xing Y, Yang YH, Jia JP. Hypervalinemia and hyperleucine-isoleucinemia caused by mutations in the branched-chain-amino-acid aminotransferase gene. J Inherit Metab Dis 2015; 38:855-61. [PMID: 25653144 DOI: 10.1007/s10545-015-9814-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Revised: 01/09/2015] [Accepted: 01/12/2015] [Indexed: 10/24/2022]
Abstract
Valine, leucine, and isoleucine are essential branched chain amino acids (BCAAs). When BCAA metabolism is genetically impaired in human, serum levels of BCAA and/or their metabolites rise considerably, causing severe neurological dysfunction. The first step in BCAA catabolism is catalyzed by branched chain aminotransferase (BCAT). Hypervalinemia and hyperleucine-isoleucinemia caused by BCAT gene mutation in human have not been reported previously. A 25-year-old man presented with headache complaints and mild memory impairment for about six years. Brain MRI showed symmetric white matter abnormal signals. Metabolic studies revealed remarkably elevated plasma valine and leucine concentrations. Maple syrup urine disease (MSUD) diagnosis was not supported since all genes for the branched-chain α-keto acid dehydrogenase complex (BCKD) gene were normal. Interestingly, two heterogeneous BCAT2 gene mutations were found in the patient, including c.509G > A (p.Arg170Gln) and c.790G > A (p.Glu264Lys). In addition, c.509G > A (p.Arg170Gln) and c.790G > A (p.Glu264Lys) were found in his father and mother, respectively, suggesting an autosomal recessive disorder. BCAT2 functional studies demonstrated that the two BCAT2 gene mutations resulted in decreased BCAT2 enzyme activity. After treatment with vitamin B6, the levels of BCAA, especially valine were remarkably decreased and brain MRI lesions were improved. These findings suggest a new type of branched chain amino acid metabolism disorder. This rare case provides great insight into the further understanding of BCAA metabolism and its defect in human. BCAT2 gene mutations can cause hypervalinemia and hyperleucine-isoleucinemia, which are associated with brain white matter lesions.
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Affiliation(s)
- X L Wang
- Department of Neurology, Xuanwu Hospital, Capital Medical University, 45 Changchun Street, Beijing, 100053, People's Republic of China
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90
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Xing Y, Wang S, Fan J, Oso AO, Kim SW, Xiao D, Yang T, Liu G, Jiang G, Li Z, Li L, Zhang B. Effects of dietary supplementation with lysine-yielding Bacillus subtilis on gut morphology, cecal microflora, and intestinal immune response of Linwu ducks1. J Anim Sci 2015; 93:3449-57. [DOI: 10.2527/jas.2014-8090] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Y. Xing
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, 410128, China
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, China
| | - S. Wang
- Hunan Microbiology Institute, Changsha, 410009, China
| | - J. Fan
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, 410128, China
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, China
| | - A. O. Oso
- Department of Animal Nutrition, College of Animal Science and Livestock Production, Federal University of Agriculture, Abeokuta, PMB 2240, Nigeria
| | - S. W. Kim
- Department of Animal Science, North Carolina State University, Raleigh, NC 27695
| | - D. Xiao
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, 410128, China
| | - T. Yang
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, China
| | - G. Liu
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, China
| | - G. Jiang
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, China
| | - Z. Li
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, 410128, China
| | - L. Li
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, China
| | - B. Zhang
- College of Animal Science and Technology, Hunan Agricultural University, Changsha, 410128, China
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91
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Zheng ZF, Shi HL, Xing Y, Li D, Jia JY, Lin S. Thoracic cord compression due to ligamentum flavum gouty tophus: a case report and literature review. Spinal Cord 2015; 53:881-6. [PMID: 26078231 PMCID: PMC5399141 DOI: 10.1038/sc.2015.93] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2015] [Accepted: 04/07/2015] [Indexed: 12/13/2022]
Abstract
Study design: Here we describe a patient who developed myelopathy due to gouty tophi of the ligamentum flavum in the thoracic spine. We also review similar cases previously reported in the literature. Objective: Our aim was to present a case of myelopathy due to thoracic spinal gouty tophus. Methods: We report the case of a 56-year-old male with history of peripheral gout and renal insufficiency. The patient complained of back pain and paraparesis of the left lower limb. Multiple tophi were noted over several interphalangeal and metatarsophalangeal joints. Neurological examination showed decreased left lower limb strength and a positive Babinski sign. Magnetic resonance imaging of the thoracic spine revealed hypertrophy of the ligamentum flavum at the level of T3/T4, T5/T6, T9/T10, T10/T11 and T11/T12. Results: A thoracic laminectomy at T1-T5 was performed. Chalky white granular material was found in the ligamentum flavum during surgery. Histological analysis of the specimen demonstrated a gouty tophus. The patient's back pain and paraparesis of the lower left limb improved. Conclusion: The clinician should include spinal gout in the differential diagnosis when dealing with patients with gout and axial pain with or without neurologic deficits. If this diagnosis is seriously entertained, then a CT scan or magnetic resonance imaging as well as tissue biopsy may be needed to establish the diagnosis.
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Affiliation(s)
- Z-F Zheng
- Department of Nephrology, General Hospital of Tianjin Medical University, Tianjin, China
| | - H-L Shi
- Department of Radiology, General Hospital of Tianjin Medical University, Tianjin, China
| | - Y Xing
- Department of Nephrology, General Hospital of Tianjin Medical University, Tianjin, China
| | - D Li
- Department of Nephrology, General Hospital of Tianjin Medical University, Tianjin, China
| | - J-Y Jia
- Department of Nephrology, General Hospital of Tianjin Medical University, Tianjin, China
| | - S Lin
- Department of Nephrology, General Hospital of Tianjin Medical University, Tianjin, China
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92
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Xing Y, Li N, Zhou W, Huang X, Jiang ZH, Liu L, Bao HL. [Analysis of the control level and the affecting factors in 4-11 years old children with asthma]. Beijing Da Xue Xue Bao Yi Xue Ban 2014; 46:936-940. [PMID: 25512287] [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: 06/04/2023]
Abstract
OBJECTIVE To assess the control level of 4-11 years old children with asthma and to explore the correlative factors affecting the control level of asthma. METHODS One cross-sectional study was conducted of the 4-11 years old children with asthma from Pediatrics Outpatient Department of Peking University Third Hospital from October 2013 to February 2014. According to asthma control test (ACT), the control levels of asthma children could be divided into three levels: fully controlled, partly controlled and non-controlled. The partly controlled group and the non-controlled group were merged into the non-full controlled group. Life quality was compared between the full controlled group and the non-full controlled group. The correlative factors affecting the controlled level of asthma were analyzed by Logistic regression. The correlative case information was collected and the data were entered with EpiData software and analyzed with SPSS 17.0 software. RESULTS Ninety asthma children were enrolled.The children from the full controlled group and the non-full controlled group accounted for 61.1% (55/90) and 38.9% (35/90), respectively. Life quality of the full controlled group was higher than that of the non-fully controlled group. There was no significant difference between the two groups on body mass index (BMI), education level of parents, parents or relative smoking, times of respiratory tract infection within 3 months, using asthma control drugs within 4 weeks before seeing a doctor and regularly taking medicine according to the doctor's advice (P>0.05). The binary Logistic regression analysis obtained three correlative factors affecting the control level of asthma: non-regular follow-up (OR=8.364, 95%CI: 1.816-38.532, P<0.05), being diagnosed with or suffering from allergic rhinitis (OR=6.728, 95% CI: 1.699-26.644, P<0.05) and accompanying with other allergic diseases (OR=3.926, 95%CI: 1.210-12.744, P<0.05). CONCLUSION The results from the single center have shown that the asthma full-controlled rate of 4-11 years old children with asthma is not high. The higher control level, the better the life quality. Non-regular follow-up and being diagnosed with or suffering from allergic rhinitis are the correlative factors affecting the control level of 4-11 years old children with asthma. Meanwhile, accompanying with other allergic diseases, such as atopic dermatitis and food allergy is the protective factor for asthma control. The data from the multi-center and further study will be needed to demonstrate the results of this study.
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Affiliation(s)
- Y Xing
- Department of Pediatrics, Peking University Third Hospital, Beijing 100191, China
| | - N Li
- Research Center of Clinical Epidemiology, Peking University Third Hospital, Beijing 100191, China
| | - W Zhou
- Department of Pediatrics, Peking University Third Hospital, Beijing 100191, China
| | - X Huang
- Department of Pediatrics, Peking University Third Hospital, Beijing 100191, China
| | - Z H Jiang
- Department of Pediatrics, Peking University Third Hospital, Beijing 100191, China
| | - L Liu
- Department of Pediatrics, Peking University Third Hospital, Beijing 100191, China
| | - H L Bao
- Department of Pediatrics, Peking University Third Hospital, Beijing 100191, China
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93
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Li Y, Feng ST, Yao Y, Yang L, Xing Y, Wang Y, You JH. Correlation between IRGM genetic polymorphisms and Crohn's disease risk: a meta-analysis of case-control studies. Genet Mol Res 2014; 13:10741-53. [PMID: 25526194 DOI: 10.4238/2014.december.18.15] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
This meta-analysis was performed to evaluate the relationships between single-nucleotide polymorphisms (SNPs) in the immunity-related GTPase M (IRGM) gene and the risk of Crohn's disease (CD). Eleven case-control studies were included, for a total of 5183 CD patients and 5571 healthy controls. Three common SNPs (rs13361189 C>T, rs10065172 C>T, and rs4958847 A>G) in the IRGM gene were assessed. We found that the IRGM rs13361189 polymorphism was significantly associated with an increased risk of CD [C allele vs T allele: odds ratio (OR) = 1.30, 95% confidence interval (CI) = 1.05-1.61, P = 0.017; CC + CT vs TT: OR = 1.32, 95%CI = 1.06-1.64, P = 0.013]. However, we observed no correlation between the rs10065172 and rs4958847 polymorphisms in the IRGM gene with susceptibility to CD (all P > 0.05). Subgroup analysis by ethnicity revealed significant associations between IRGM genetic polymorphisms and an increased risk of CD among Caucasian populations (C allele vs T allele: OR = 1.22, 95%CI = 1.07-1.40, P = 0.004; CC + CT vs TT: OR = 1.22, 95%CI = 1.05-1.41, P = 0.009), but not among Asian populations (all P > 0.05). Meta-regression analysis also confirmed that ethnic differences may be an important source of heterogeneity (P = 0.003). Our meta-analysis results indicate that the IRGM rs13361189 polymorphism contributes to the susceptibility to CD. Thus, the IRGM rs13361189 polymorphism is promising as a biomarker for early diagnosis of CD. However, the IRGM rs10065172 and rs4958847 polymorphisms may not be the major determinants of CD risk.
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Affiliation(s)
- Y Li
- Department of Gastroenterology, People's Hospital of Liaoning Province, Shenyang, China
| | - S-T Feng
- Department of Gastroenterology, People's Hospital of Liaoning Province, Shenyang, China
| | - Y Yao
- First Department of Gastroenterology, People's Hospital of Liaoning Province, Shenyang, China
| | - L Yang
- Department of Gastroenterology, People's Hospital of Liaoning Province, Shenyang, China
| | - Y Xing
- Department of Gastroenterology, People's Hospital of Liaoning Province, Shenyang, China
| | - Y Wang
- Department of Gastroenterology, People's Hospital of Liaoning Province, Shenyang, China
| | - J-H You
- Department of Respiratory Medicine, People's Hospital of Liaoning Province, Shenyang, China
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94
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Pu D, Xing Y, Gao Y, Gu L, Wu J. Gene variation and premature ovarian failure: a meta-analysis. Eur J Obstet Gynecol Reprod Biol 2014; 182:226-37. [DOI: 10.1016/j.ejogrb.2014.09.036] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 07/12/2014] [Accepted: 09/23/2014] [Indexed: 12/16/2022]
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95
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Xu P, Xu H, Tang X, Xu L, Wang Y, Guo L, Yang Z, Xing Y, Wu Y, Warner M, Gustafsson JA, Fan X. Liver X receptor β is essential for the differentiation of radial glial cells to oligodendrocytes in the dorsal cortex. Mol Psychiatry 2014; 19:947-57. [PMID: 24934178 DOI: 10.1038/mp.2014.60] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Revised: 04/23/2014] [Accepted: 04/24/2014] [Indexed: 01/22/2023]
Abstract
Several psychiatric disorders are associated with aberrant white matter development, suggesting oligodendrocyte and myelin dysfunction in these diseases. There are indications that radial glial cells (RGCs) are involved in initiating myelination, and may contribute to the production of oligodendrocyte progenitor cells (OPCs) in the dorsal cortex. Liver X receptors (LXRs) are involved in maintaining normal myelin in the central nervous system (CNS), however, their function in oligodendrogenesis and myelination is not well understood. Here, we demonstrate that loss of LXRβ function leads to abnormality in locomotor activity and exploratory behavior, signs of anxiety and hypomyelination in the corpus callosum and optic nerve, providing in vivo evidence that LXRβ deletion delays both oligodendrocyte differentiation and maturation. Remarkably, along the germinal ventricular zone-subventricular zone and corpus callosum there is reduced OPC production from RGCs in LXRβ(-/-) mice. Conversely, in cultured RGC an LXR agonist led to increased differentiation into OPCs. Collectively, these results suggest that LXRβ, by driving RGCs to become OPCs in the dorsal cortex, is critical for white matter development and CNS myelination, and point to the involvement of LXRβ in psychiatric disorders.
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Affiliation(s)
- P Xu
- Department of Histology and Embryology, Third Military Medical University, Chongqing, China
| | - H Xu
- Southwest Eye Hospital, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - X Tang
- Department of Histology and Embryology, Third Military Medical University, Chongqing, China
| | - L Xu
- Department of Histology and Embryology, Third Military Medical University, Chongqing, China
| | - Y Wang
- Department of Histology and Embryology, Third Military Medical University, Chongqing, China
| | - L Guo
- Department of Histology and Embryology, Third Military Medical University, Chongqing, China
| | - Z Yang
- Department of Histology and Embryology, Third Military Medical University, Chongqing, China
| | - Y Xing
- Institute of Immunology, PLA, Third Military Medical University, Chongqing, China
| | - Y Wu
- Institute of Immunology, PLA, Third Military Medical University, Chongqing, China
| | - M Warner
- Department of Biology and Biochemistry, Center for Nuclear Receptors and Cell Signaling, University of Houston, Houston, TX, USA
| | - J-A Gustafsson
- 1] Department of Biology and Biochemistry, Center for Nuclear Receptors and Cell Signaling, University of Houston, Houston, TX, USA [2] Department of Biosciences and Nutrition, Karolinska Institute, Novum, Sweden
| | - X Fan
- Department of Histology and Embryology, Third Military Medical University, Chongqing, China
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96
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Xing Y, Wu Y, Wang L, Meng X. Human umbilical cord blood cell transplantation improves cardiac function in a myoardial infarction rat model but induces intestinal graft versus host disease. Cell Mol Biol (Noisy-le-grand) 2014; 60:6-12. [PMID: 24929007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2014] [Accepted: 06/11/2014] [Indexed: 06/03/2023]
Abstract
Human umbilical cord blood cell (HUCBC) has low immunity. In the present study we investigated intestinal graft-versus-host disease (GVHD) induced by HUCBC transplantation in a myocardial infarction (MI) rat model. MI was established by using left anterior descending coronary artery (LAD) ligation. HUCBCs were injected into the animals 5 days post MI. Four weeks after the HUCBC transplantation, histology changes in small intestine were observed under an optical microscope. In addition, cardiac functions were tested. Further, factor VIII, vascular endothelial growth factor (VEGF) in the myocardium and small intestine were assayed. The HUCBC transplantation significantly induced intestinal GVHD in the MI rats. The HUCBC implantation remarkably improved ejection fraction (EF), fractional shortening (FS), and dp/dtmax in the MI rats (P<0.05). In the myocardium, the capillary density was larger in the small intestine of the HUCBC-transplanted rats compared to the controls. Real-time PCR and western blotting revealed that VEGF mRNA and protein levels in the myocardium and the small intestine dramatically significantly upregulated in the HUCBC-transplanted rats (P<0.05). The HUCBC transplantation significantly improves aggravated cardiac function of MI rats, but it induces intestinal GVHD.
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Affiliation(s)
- Y Xing
- Friendship Hospital, China Capital Medical University Research Center for the Prevention of Cardiovascular Disease Beijing China yunlxing@126.com
| | - Y Wu
- Friendship Hospital, China Capital Medical University Research Center for the Prevention of Cardiovascular Disease Beijing China
| | - L Wang
- Friendship Hospital, China Capital Medical University Research Center for the Prevention of Cardiovascular Disease Beijing China
| | - X Meng
- Anzhen Hospital Department of cardiac surgery Beijing China
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97
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Xing Y, Jia J, Ji X, Tian T. Estrogen associated gene polymorphisms and their interactions in the progress of Alzheimer's disease. Prog Neurobiol 2013; 111:53-74. [DOI: 10.1016/j.pneurobio.2013.09.006] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2012] [Revised: 08/21/2013] [Accepted: 09/24/2013] [Indexed: 10/26/2022]
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98
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An YH, Xing Y, Song J, Li PG, Wang SL, Liu AP, Zhu ZY, Tang WH. Optoelectronic properties of CdSe0.75S0.25 nanocrystals assembled into micro-electrodes. J Nanosci Nanotechnol 2013; 13:5640-5644. [PMID: 23882809 DOI: 10.1166/jnn.2013.7518] [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: 06/02/2023]
Abstract
CdSe0.75S0.25 semiconductor nanocrystals were synthesized by chemical colloidal route. The crystal structure, morphology and optical properties of synthesized CdSe0.75S0.25 nanocrystals were characterized by XRD, TEM and UV-Vis absorption spectroscopy respectively. The crystal structure of CdSe0.75S0.25 is face-centered Cubic sphalerite phase. The average size is about 7 nm in diameter. A gold tip-to-tip structure electrode with the gap size -20 microm was fabricated using conventional optical lithography technique followed by film deposition and standard lift-off process. An optoelectronics device was fabricated based on CdSe0.75S0.25 by assembling nanocrystals into electrodes by using dielectrophoresis (DEP) process. The electrical transport properties and opto-electrical transport properties of the fabricated device were measured at temperature range from 5 K to 305 K. The results show that the resistance of CdSe0.75S0.25 NCs increases with the temperature decreases, indicating a typical semiconductor behavior. An obvious photoconductive behavior was observed, demonstrated potential application in nano-optoelectronics devices. After data analyzing, the conductivity shows the 0.5 exponent of Efros-Shklovskii variable-range-hopping (ES-VRH) model.
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Affiliation(s)
- Y H An
- Department of Physics, Center for Optoelectronics Materials and Devices, Zhejiang Sci-Tech University, Hangzhou 310018, PR China
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99
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Xiao B, Ji X, Xing Y, Jiang WT, Zhang JM, Tao J. Inverted Duplication and Deletion of 10q25q26 in a Patient without Any Obvious Skeletal Anomalies. Mol Syndromol 2012; 3:185-9. [PMID: 23239961 DOI: 10.1159/000343047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/20/2012] [Indexed: 11/19/2022] Open
Abstract
We report on a girl with inverted duplication and deletion of 10q25q26 revealed by array-CGH and FISH analysis. Array-CGH analysis demonstrated a ∼13.1-Mb duplication encompassing 10q25.3q26.2 and a ∼5-Mb deletion at 10q26.2q26.3. No single-copy region was detected between the deleted and duplicated segments. FISH analysis found the arrangement duplicated in an inverted position. FISH analysis using the same probes did not show any abnormality in both parents, which indicates a de novo occurrence. The frequently reported features of distal 10q duplication include developmental delay, blepharophimosis, hypotonia, skeletal anomalies and some facial dysmorphisms. The girl presented with many features of distal 10q duplication with the exception of skeletal anomalies. To our knowledge, this is the fourth patient reported in the literature with inv dup del 10q. 10q duplication seems to account for most of the phenotypes for our patient. Although no obvious skeletal feature was found in our patient at present, follow-up assessment of skeletal development should be planned with the increase of age.
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Affiliation(s)
- B Xiao
- Xinhua Hospital, Shanghai Jiaotong University School of Medicine and Department of Genetics, Shanghai Institute for Pediatric Research, Shanghai, China
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100
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Yang Y, Guo ZN, Wu J, Jin H, Wang X, Xu J, Feng J, Xing Y. Prevalence and extent of right-to-left shunt in migraine: a survey of 217 Chinese patients. Eur J Neurol 2012; 19:1367-72. [PMID: 22747847 DOI: 10.1111/j.1468-1331.2012.03793.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Accepted: 05/23/2012] [Indexed: 11/30/2022]
Abstract
BACKGROUND Recently, contrast-enhanced transcranial Doppler (cTCD) studies have shown that right-to-left shunt (RLS) may be a risk factor for migraine in Westerners; however, limited data in the literature describes the prevalence of RLS in Chinese patients with migraine. OBJECTIVE To assess the prevalence of RLS in patients with migraine in China and to evaluate the relationship between the extent of RLS and migraine. METHODS A total of 217 consecutive patients with a diagnosis of migraine and 100 volunteers were recruited. cTCD was used to assess the prevalence and the extent of RLS in all subjects. RESULTS In the migraine group, the rate of positive RLS was 44.2% (96/217), with 23.5% (51/217) of these being large. In the healthy group, 28.0% (28/100) were positive for RLS overall, and 5.0% (5/100) were large (P = 0.006; P < 0.001). In patients having migraines with aura (MwA), 66.1% (39/59) were positive for RLS overall, and 37.3% (22/59) were large, which was significantly higher when compared with the healthy group (P < 0.001; P < 0.001); in patients having migraines without aura (MwoA), 36.1% (57/158) were positive for RLS overall, and 18.4% (29/158) were large, which was against significantly higher (P < 0.001; P = 0.003). In the MwoA group, the large RLS rate was also higher than in the healthy group (P = 0.002). CONCLUSIONS A close correlation has been documented between RLS and migraine, especially MwA, but these relationships exist only when the shunts were large.
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Affiliation(s)
- Y Yang
- Department of Neurology, The First Norman Bethune Hospital of Jilin University, Chang Chun, China
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