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Li YW, Li CC, Chen C, Li Z, Chen C, Fang JL, Li TT, Zhao F, Shi XM. [Study on formulation and revision of standard limits for inhalable particulate matter (PM 10) and fine particulate matter (PM 2.5) in "Standards for indoor air quality(GB/T 18883-2022)" in China]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:1761-1765. [PMID: 38008561 DOI: 10.3760/cma.j.cn112150-20230608-00451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 11/28/2023]
Abstract
The pollution and health effects of indoor inhalable particulate matter (PM10) and fine particulate matter (PM2.5) are increasingly receiving public attention. The"Standards for indoor air quality (GB/T 18883-2022)"has revised the standard limit for PM10 and added the standard limit for PM2.5. This study analyzed and interpreted the relevant technical contents of the revision of the standard limits for two indicators, including the exposure status, health effects, and the basis for the determination of the limit value. It also proposed prospects for the future development and revision of standard limits for indoor particulate matters.
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Affiliation(s)
- Y W Li
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - C C Li
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - C Chen
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Z Li
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - C Chen
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - J L Fang
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - T T Li
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - F Zhao
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - X M Shi
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
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Zhang TL, Yi LX, Li CC, Yuan SS, Dou YX, Tian SY, Lin KX. [Spatial Distribution, Speciation, and Ecological Risk Assessment of Heavy Metals in Surface Sediments of Dongjiang Lake, Hunan Province]. Huan Jing Ke Xue 2023; 44:4896-4905. [PMID: 37699808 DOI: 10.13227/j.hjkx.202209060] [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: 09/14/2023]
Abstract
To understand the heavy metal pollution status of Dongjiang Lake, the contents and species of heavy metals in the surface sediments were investigated during September 2021, and the heavy metal pollution level and potential ecological risk were evaluated. The results showed that Cd, Pb, As, Cu, Zn, Ni, and Cr contents were in the range of 0.40-34.1, 14.8-1688, 6.99-1155, 6.89-280, 26.2-1739, 6.29-55.4, and 23.3-44.8 mg·kg-1, respectively, with extremely uneven spatial distributions. The highest contents of Cd, Pb, As, Zn, Cu, and Ni were found in the site adjacent to Yaogangxian tungsten ore. The proportion of metal species with bioavailability was high, in which Cd in acid-soluble species was 46.7%-71.5% and Pb in reducible species was 46.8%-67.0%. The bioavailable species of Cu, Zn, Ni, and Cr were 35%-68%, 42%-72%, 26%-51%, and 6%-30%, respectively, although they primarily existed in residual species. According to the geo-accumulation index (Igeo), there was a moderate or extreme pollution status of Cd in all sites, moderate or extreme pollution status of Pb in 90% of sites, and moderate pollution status of As, Cu, and Zn in 30% of sites. The ecological risk factor (Eri) of Cd showed high potential ecological risk in all sites with significantly high potential ecological risk in 80% of sites. Moreover, As and Pb had significantly high potential ecological risk, and Cu had moderate potential ecological risk in S7, which was adjacent to Yaogangxian tungsten ore. There was a high total potential ecological risk in all sites and significantly high potential ecological risk in 50% of sites. Therefore, the surface sediments of Dongjiang Lake were under the combined pollution of Cd, Pb, As, Zn, and Cu with high bioavailability and high total potential ecological risk.
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Affiliation(s)
- Tong-Liang Zhang
- Tianjin Marine Environmental Protection and Restoration Technology Engineering Center, Key Laboratory of Marine Resources Chemistry and Food Technology, Ministry of Education, College of Marine and Environmental Sciences, Tianjin University of Science and Technology, Tianjin 300457, China
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Li-Xia Yi
- Tianjin Marine Environmental Protection and Restoration Technology Engineering Center, Key Laboratory of Marine Resources Chemistry and Food Technology, Ministry of Education, College of Marine and Environmental Sciences, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Chang-Cheng Li
- Chenzhou Ecological and Environmental Monitoring Center, Chenzhou 423400, China
| | - Shou-Shu Yuan
- Chenzhou Dongjiang Lake Water Environment Protection Bureau, Chenzhou 423400, China
| | - Yi-Xuan Dou
- Chenzhou Municipal Ecology and Environment Bureau, Chenzhou 423400, China
| | - Sheng-Yan Tian
- Tianjin Marine Environmental Protection and Restoration Technology Engineering Center, Key Laboratory of Marine Resources Chemistry and Food Technology, Ministry of Education, College of Marine and Environmental Sciences, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Kui-Xuan Lin
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
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Li CC, Li XM, Xu YH, Li MY, Wang CP. [Analysis of the burden of disease attributable to high temperature exposure in China and globally from 1990 to 2019]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2023; 41:271-276. [PMID: 37248180 DOI: 10.3760/cma.j.cn121094-20220507-00243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Objective: To analyze the burden of disease attributable to high temperature exposure in China and globally from 1990 to 2019, and to study the current burden of disease in relevant populations. Methods: In October 2021, based on data from the global burden of disease 2019 (GBD 2019) study, population attributable fraction (PAF), number of deaths, mortality, disability-adjusted life year (DALY) and DALY rate of Chinese and global populations with different ages and genders in 1990 and 2019 were extracted and analyzed. The rate of change was calculated, the mortality rate was normalized by the age structure of the world standard population, and the causes of disease burden caused by high temperature exposure of Chinese residents were analyzed. Results: In 2019, compared with 1990, the PAF of Chinese and global population decreased by 43.98% and 12.41% respectively, the number of deaths increased by 29.55% and 49.40% respectively, the crude mortality rate increased by 7.81% and 3.30% respectively, the DALY decreased by 48.12% and 14.41% respectively, and the DALY rate decreased by 56.82% and 40.82% respectively. The mortality rate of the ≥70 age group was higher than that of other groups. The disease burden indicators such as PAF, standardized mortality and DALY attributable to high temperature exposure in men were higher than those in women. In 2019, the main cause of DALY affected by high temperature exposure in Chinese population was ischemic heart disease (84400 person-years), and the main cause of death was ischemic heart disease (4900 cases). Conclusion: The burden of diseases attributable to high temperature exposure is still serious in China and the world at large. Targeted interventions should be formulated for men, the elderly and people with occupational exposure, and a sound surveillance system should be established to reduce the burden of diseases caused by high temperature exposure.
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Affiliation(s)
- C C Li
- School of Public Health, Weifang Medical College, Weifang 261053, China Occupational Disease Prevention and Health Monitoring and Evaluation Section, Binzhou Center for Disease Control and Prevention, Binzhou 256600, China
| | - X M Li
- Occupational Disease Prevention and Health Monitoring and Evaluation Section, Binzhou Center for Disease Control and Prevention, Binzhou 256600, China
| | - Y H Xu
- Occupational Disease Prevention and Health Monitoring and Evaluation Section, Binzhou Center for Disease Control and Prevention, Binzhou 256600, China
| | - M Y Li
- Occupational Disease Prevention and Health Monitoring and Evaluation Section, Binzhou Center for Disease Control and Prevention, Binzhou 256600, China
| | - C P Wang
- School of Public Health, Weifang Medical College, Weifang 261053, China
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Wu XF, Li CC, Li TT, Sun L, Lu J, Ran XH. [Efficacy and safety of dexcitabine combined with HAAG regimen in the treatment of recurrent acute myeloid leukemia]. Zhonghua Yi Xue Za Zhi 2023; 103:981-985. [PMID: 36990713 DOI: 10.3760/cma.j.cn112137-20220712-01540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
Objective: To investigate the efficacy and safety of dexithabine (DAC) combined with HAAG regimen [harringtonine (HHT), cytarabine (Ara-C), aclarubicin (Acla) and recombinant human granulocyte colony stimulating factor (G-CSF)] in the treatment of acute myeloid leukemia (AML). Methods: The clinical data of 89 AML patients in People's Hospital Affiliated to Shandong First Medical University from January 2019 to January 2021 were retrospectively analyzed. The patients were divided into observation group (n=48) and control group (n=41) according to the treatment plan. The observation group included 25 males and 23 females, aged (44.4±9.3) years old, and was treated with DAC combined with HAAG. The control group included 24 males and 17 females, aged (42.2±10.1) years old, and was treated with DAC regimen. After 3 cycles of treatment, the treatment efficacy of the two groups was judged, including complete remission, partial remission and no remission. The level of serum P-glycoprotein (P-gp) in the two groups was detected by direct immunofluorescence-labeled monoclonal antibody flow cytometry. The enzyme-linked immunosorbent assay was used to detect the level of soluble urokinase-type plasminogen activator receptor (suPAR). Meanwhile, the incidence of adverse reactions such as digestive tract reaction, liver and kidney dysfunction, hemorrhage and infection during treatment were recorded. Results: After 3 cycles of treatment, the observation group had complete remission, partial remission and no remission in 10 cases, 21 cases and 17 cases, respectively, and the control group had 3 cases, 11 cases and 27 cases, respectively. The overall efficacy of the observation group was better than that of the control group (Z=-2.919, P=0.004). The levels of serum P-gp and suPAR in the observation group were (5.2±1.8) % and (464.4±103.4) ng/L, respectively, which were significantly lower than those in the control group [(8.8±1.9) % and (660.6±110.4) ng/L, respectively] (both P<0.05). During the treatment, the incidence of digestive tract reaction, liver and kidney dysfunction, hemorrhage and infection in the observation group was 29.2% (14/48), 22.9% (11/48), 16.7% (8/48) and 33.3% (16/48), respectively, while in the control group was 26.8% (11/41), 21.9% (9/41), 14.6% (6/41) and 24.4% (10/41), respectively, with no statistically significant difference (all P>0.05). Conclusions: The overall efficacy of DAC combined with HAAG in the treatment of AML is better than that of DAC alone. Moreover, the incidence of adverse reactions in DAC combined with HAAG is similar to that of DAC alone, with a high safety profile.
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Affiliation(s)
- X F Wu
- Department of Hematology, People's Hospital Affiliated to Shandong First Medical University, Jinan 271199, China
| | - C C Li
- Department of Hematology, People's Hospital Affiliated to Shandong First Medical University, Jinan 271199, China
| | - T T Li
- Department of Hematology, People's Hospital Affiliated to Shandong First Medical University, Jinan 271199, China
| | - L Sun
- Department of Hematology, People's Hospital Affiliated to Shandong First Medical University, Jinan 271199, China
| | - J Lu
- Department of Hematology, People's Hospital Affiliated to Shandong First Medical University, Jinan 271199, China
| | - X H Ran
- Department of Hematology, Weifang People's Hospital of Shandong Province, Weifang 261042, China
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Yang K, Li CC, Li JH, Zhao SH. Isolated left atrial amyloidosis: masquerading as a left atrial mass. Eur Heart J Cardiovasc Imaging 2023; 24:e30. [PMID: 36423221 DOI: 10.1093/ehjci/jeac234] [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: 11/26/2022] Open
Affiliation(s)
- Kai Yang
- Department of Magnetic Resonance Imaging, Fuwai Hospital and National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beilishi Road No.167, Xicheng District, Beijing 100037, China
| | - Chang-Cheng Li
- Department of Radiology, Taian City Hospital (The affiliated Taian City Central Hospital of Qingdao University), Longtan Road No. 29, Taian 271099, Shandong, China
| | - Jing-Hui Li
- Department of Magnetic Resonance Imaging, Fuwai Hospital and National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beilishi Road No.167, Xicheng District, Beijing 100037, China
| | - Shi-Hua Zhao
- Department of Magnetic Resonance Imaging, Fuwai Hospital and National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beilishi Road No.167, Xicheng District, Beijing 100037, China
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Jin LR, Li CC, Chen C, Wang Y, Wang Y, He M, Ding SN, Wei MW, Tian H, Kong XX, Dong C, Zhou L, Peng JF, Wang ZG, Zhu FC, Zhu LG. [Kinetics of SARS-CoV-2-specific antibodies among inactivated COVID-19 vaccine recipients, SARS-CoV-2 natural infection cases, and breakthrough cases]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:1834-1837. [PMID: 36536574 DOI: 10.3760/cma.j.cn112150-20220621-00639] [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: 06/17/2023]
Abstract
Between August and September, 2021, this study included 605 SARS-CoV-2 natural infection cases and 589 SARS-CoV-2 breakthrough cases from Nanjing and Yangzhou, as well as 690 inactivated COVID-19 vaccine recipients from Changzhou, China. In SARS-CoV-2 natural infection cases, the age range was 19-91 years (median age: 66 year), and the medians(Q1,Q3) of IgG titers were 0.19 (0.06-1.31), 3.70 (0.76-69.48), 15.31 (2.59-82.16), 4.41 (0.99-31.74), 2.31 (0.75-13.83), 2.28 (0.68-9.94) and 2.80 (1.00-9.53) at one to seven weeks after SARS-CoV-2 infection, respectively. In SARS-CoV-2 breakthrough cases, the age range was 18-76 years (median age: 45 year), and the medians(Q1,Q3)of IgG titers were 1.93 (0.34-26.67), 38.87 (7.90-121.0), 75.09 (11.85-123.70), 21.97 (5.20-95.58), 13.97 (3.47-46.82), 9.56 (2.48-33.38) and 4.38 (1.87-11.00) at one to seven weeks after SARS-CoV-2 infection, respectively. In inactivated COVID-19 vaccine recipients, the age range was 18-87 years (median age: 47 years), and the medians(Q1,Q3)of IgG titers were 16.22 (15.84-33.42), 5.35 (2.96-13.23), 3.30 (2.18-6.18), 3.14 (1.16-5.70), 2.77 (1.50-4.52), 2.72 (1.76-4.36), 2.01 (1.27-3.51) and 1.94 (1.35-3.09) at one to eight months after SARS-CoV-2 infection, respectively. The results suggested that IgG antibodies increased gradually within two weeks after SARS-CoV-2 infection, then declined gradually at three to seven weeks in SARS-CoV-2 natural infection cases. In SARS-CoV-2 breakthrough cases, IgG antibodies increased rapidly within two weeks, then declined gradually at three to seven weeks after SARS-CoV-2 infection. Additionally, IgG antibodies decreased rapidly within three months, then decreased gradually and remained at a low level within three months after immunization.
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Affiliation(s)
- L R Jin
- School of Public Health, Southeast University, Nanjing 210009, China
| | - C C Li
- Institute of Acute Infectious Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - C Chen
- Institute of Acute Infectious Disease Control, Changzhou Municipal Center for Disease Control and Prevention, Changzhou 213000, China
| | - Y Wang
- Institute of Acute Infectious Disease Control, Yangzhou Municipal Center for Disease Control and Prevention, Yangzhou 225000, China
| | - Y Wang
- Laboratory Department, Yangzhou Municipal Center for Disease Control and Prevention, Yangzhou 225000, China
| | - M He
- Laboratory Department, Nanjing Municipal Center for Disease Control and Prevention, Nanjing 210003, China
| | - S N Ding
- Institute of Acute Infectious Disease Control, Nanjing Municipal Center for Disease Control and Prevention, Nanjing 210003, China
| | - M W Wei
- Institute of Acute Infectious Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - H Tian
- Institute of Acute Infectious Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - X X Kong
- Institute of Acute Infectious Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - C Dong
- Institute of Acute Infectious Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - L Zhou
- Institute of Acute Infectious Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - J F Peng
- Institute of Acute Infectious Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - Z G Wang
- Institute of Acute Infectious Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - F C Zhu
- Institute of Acute Infectious Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
| | - L G Zhu
- School of Public Health, Southeast University, Nanjing 210009, China Institute of Acute Infectious Disease Control, Jiangsu Provincial Center for Disease Control and Prevention, Nanjing 210009, China
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Zhu Y, Lu G, Jin R, Sun Y, Shang YX, Ai JH, Wang R, Chen XP, Duan YL, Zhang M, Li CC, Xu B, Xie Z. [Analysis of respiratory syncytial virus infection in hospitalized children with acute lower respiratory tract infection in China from 2017 to 2020]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:1739-1744. [PMID: 36536560 DOI: 10.3760/cma.j.cn112150-20220311-00227] [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: 06/17/2023]
Abstract
Objective: To understand the detection rate, epidemic pattern of respiratory syncytial virus (RSV) in hospitalized children with acute lower respiratory tract infection (ALRTI) in China. Methods: From June 2017 to March 2020, a prospective multi-center study on the viral aetiology among hospitalized children with ALRTI was conducted in six pediatrics hospital of North China, Northeast, Northwest, South China, Southeast, and Southwest China. A total of 2 839 hospitalized children with ALRTI were enrolled, and the respiratory specimens were collected from these cases. A multiplex real-time RT-PCR assay were employed to screen the respiratory viruses, and the molecular epidemiological and clinical characteristics of children infected with RSV were analyzed. Results: The positve rate of RSV was 18.6% (528/2 839), and the positive rate of RSV in different regions ranged from 5.5% to 44.3%. The positive rate of RSV in male was higher than that in female (20.2% vs 16.3%), and there was a significant statistically difference between two groups (χ2=6.74, P=0.009). The positive rate of RSV among children under 5 years old was higher than that among children older than 5 years old (22.3% vs 4.5%), and there was a significant statistically difference between two groups (χ2=97.98,P<0.001). The positive rate of RSV among the <6 months age group was higher than that of other age groups (all P<0.05). During January 2018 and December 2019, RSV was detected in almost all through the year, and showed peaks in winter and spring. RSV-positive cases accounted for 17.0% (46/270) among children with severe pneumonia, including 36 cases infected with RSV alone. Conclusion: RSV is an important viral pathogen in children under 5 years old with ALRTI in China. The virus can be detected almost all through the year and reached the peak in winter and spring. RSV could lead to severe pneumonia in children and caused huge threaten to children's health.
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Affiliation(s)
- Y Zhu
- Laboratory of Infection and Virology, Beijing Pediatric Research Institute, Beijing Key Laboratory of Pediatric Respiratory Infection Diseases, Research Unit of Critical Infection in Children, Chinese Academy of Medical Sciences, Beijing Children's Hospital, Capital Medical University, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, National Center for Children's Health, Beijing 100045, China
| | - G Lu
- Guangzhou Women and Children's Medical Center, Guangzhou 510623, China
| | - R Jin
- Guiyang Maternal and Child Health Care Hospital, Guiyang 550003, China
| | - Y Sun
- Yinchuan Women and Children Healthcare Hospital, Yinchuan 750001, China
| | - Y X Shang
- Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - J H Ai
- Laboratory of Infection and Virology, Beijing Pediatric Research Institute, Beijing Key Laboratory of Pediatric Respiratory Infection Diseases, Research Unit of Critical Infection in Children, Chinese Academy of Medical Sciences, Beijing Children's Hospital, Capital Medical University, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, National Center for Children's Health, Beijing 100045, China
| | - R Wang
- Laboratory of Infection and Virology, Beijing Pediatric Research Institute, Beijing Key Laboratory of Pediatric Respiratory Infection Diseases, Research Unit of Critical Infection in Children, Chinese Academy of Medical Sciences, Beijing Children's Hospital, Capital Medical University, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, National Center for Children's Health, Beijing 100045, China
| | - X P Chen
- Laboratory of Infection and Virology, Beijing Pediatric Research Institute, Beijing Key Laboratory of Pediatric Respiratory Infection Diseases, Research Unit of Critical Infection in Children, Chinese Academy of Medical Sciences, Beijing Children's Hospital, Capital Medical University, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, National Center for Children's Health, Beijing 100045, China
| | - Y L Duan
- Laboratory of Infection and Virology, Beijing Pediatric Research Institute, Beijing Key Laboratory of Pediatric Respiratory Infection Diseases, Research Unit of Critical Infection in Children, Chinese Academy of Medical Sciences, Beijing Children's Hospital, Capital Medical University, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, National Center for Children's Health, Beijing 100045, China
| | - M Zhang
- Laboratory of Infection and Virology, Beijing Pediatric Research Institute, Beijing Key Laboratory of Pediatric Respiratory Infection Diseases, Research Unit of Critical Infection in Children, Chinese Academy of Medical Sciences, Beijing Children's Hospital, Capital Medical University, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, National Center for Children's Health, Beijing 100045, China
| | - C C Li
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - Baoping Xu
- Department of Respiratory Diseases I, Beijing Children's Hospital, Capital Medical University, National Clinical Research Center for Respiratory Diseases, National Center for Children's Health, Beijing 100045, China
| | - Zhengde Xie
- Laboratory of Infection and Virology, Beijing Pediatric Research Institute, Beijing Key Laboratory of Pediatric Respiratory Infection Diseases, Research Unit of Critical Infection in Children, Chinese Academy of Medical Sciences, Beijing Children's Hospital, Capital Medical University, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, National Center for Children's Health, Beijing 100045, China
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8
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Li CC, Yi H, Wang YM, Tang XY, Zhu YB, Song YJ, Zhao NL, Huang Q, Mou XY, Luo GH, Liu TG, Yang GL, Zeng YJ, Wang LJ, Tang H, Fan G, Bao R. Nucleotide binding as an allosteric regulatory mechanism for Akkermansia muciniphila β- N-acetylhexosaminidase Am2136. Gut Microbes 2022; 14:2143221. [PMID: 36394293 PMCID: PMC9673926 DOI: 10.1080/19490976.2022.2143221] [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] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
β-N-acetylhexosaminidases (EC3.2.1.52), which belong to the glycosyl hydrolase family GH20, are important enzymes for oligosaccharides modification. Numerous microbial β-N-acetylhexosaminidases have been investigated for applications in biology, biomedicine and biotechnology. Akkermansia muciniphila is an anaerobic intestinal commensal bacterium which possesses specific β-N-acetylhexosaminidases for gut mucosal layer colonization and mucin degradation. In this study, we assessed the in vitro mucin glycan cleavage activity of the A. muciniphila β-N-acetylhexosaminidase Am2136 and demonstrated its ability that hydrolyzing the β-linkages joining N-acetylglucosamine to a wide variety of aglycone residues, which indicated that Am2136 may be a generalist β-N-acetylhexosaminidase. Structural and enzyme activity assay experiments allowed us to probe the essential function of the inter-domain interactions in β23-β33. Importantly, we revealed that the hydrolysis activity of Am2136 was enhanced by nucleotides. We further speculated that this activation mechanism might be associated with the conformational motions between domain III and IV. To our knowledge, this is the first report of nucleotide effector regulated β-N-acetylhexosaminidase, to reveal its novel biological functions. These findings contribute to understanding the distinct properties within the GH20 family and lay a certain foundation to develop controllable glycan hydrolyzing catalysts.Abbreviations: OD600 - optical cell densities at 600 nm; LB - Luria-Bertani; IPTG - isopropyl β-D-1-thiogalactopyranoside; PMSF - phenylmethanesulfonyl fluoride; rmsd - root mean square deviation; GlcNAc - N-acetyl-β-D-glucosamine; GalNAc - N-acetyl-β-D-galactosamine; Gal - galactose.
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Affiliation(s)
- Chang-Cheng Li
- Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Huan Yi
- State Key Laboratory of Southwestern Chinese Medicine Resources, College of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yan-Mei Wang
- Institute of traditional Chinese medicine, Sichuan College of traditional Chinese Medicine (Sichuan Second Hospital of TCM), Chengdu, China
| | - Xin-Yue Tang
- Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Yi-Bo Zhu
- Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Ying-Jie Song
- Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Ning-Lin Zhao
- Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Qin Huang
- Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Xing-Yu Mou
- Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Gui-Hua Luo
- Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Tong-Gen Liu
- Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Gang-Long Yang
- School of Biotechnology, Jiangnan University, Chengdu, China
| | - Yu-Jiao Zeng
- State Key Laboratory of Southwestern Chinese Medicine Resources, College of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Li-Jie Wang
- State Key Laboratory of Southwestern Chinese Medicine Resources, College of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Hong Tang
- Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China,Hong Tang Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University. Chengdu. China
| | - Gang Fan
- State Key Laboratory of Southwestern Chinese Medicine Resources, College of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, China,Gang Fan State Key Laboratory of Southwestern Chinese Medicine Resources, College of Ethnic Medicine, Chengdu University of Traditional Chinese Medicine. Chengdu. China
| | - Rui Bao
- Division of Infectious Diseases, State Key Laboratory of Biotherapy and Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China,CONTACT Rui Bao
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9
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Li CC, Zhang M, Liu YH, Zhang ZR, Wang D, Huang LG, Wang H, Wang XC. [The feasibility study of objective evaluation of the severity of motion sickness by quantitative analysis of the facial skin color]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2022; 57:943-947. [PMID: 36058660 DOI: 10.3760/cma.j.cn115330-20211120-00748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To explore the feasibility of applying quantitative analysis of the facial skin color to evaluate the severity of motion sickness objectively and to seek objective indicators that can reflect the severity of motion sickness. Methods: Motion sickness was induced in 51 male adult subjects recruited at the Air Force Medical University by Coriolis acceleration stimulation, and facial skin colorimetric values were acquired using a portable spectrophotometer at five time points: before stimulation and at 0 min, 10 min, 20 min and 30 min after the end of stimulation. The Graybiel rating scales were applied to assess the severity of motion sickness in subjects at each time point after stimulation, and the correlation between the magnitude of change in each colorimetric value and the maximum Graybiel's score was analyzed. The ROC curves were used to compare the evaluation performance of colorimetric value indicators which could reflect the severity of motion sickness. Results: Each colorimetric value in the CIE-L*a*b* color system changed significantly after exposure to provocative motion stimuli, and the trend was consistent with the typical sign of pallor in motion sickness. The magnitudes of the increase in the colorimetric value CIE-L*, the decrease in CIE-a*, and the increase in CIE-b* were all significantly and positively correlated with the maximum of Graybiel's scores (r=0.490 0, P=0.000 3; r=0.549 3, P<0.000 1; r=0.540 9, P<0.000 1). Comparing the performance of three colorimetric indicators to assess the severity of motion sickness, CIE-a* had an area under the ROC curve of 0.875 0, a sensitivity of 85.71%, and a specificity of 87.50%, which was better than CIE-L* and CIE-b*. Conclusions: The CIE-L*a*b* colorimeter values can be considered as objective indicators of the severity of motion sickness, among which the colorimetric indicator CIE-a* has the most diagnostic significance, and the method of quantitative analysis of the facial skin color can provide a new reference for the objective evaluation of the severity of motion sickness.
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Affiliation(s)
- C C Li
- Center of Clinical Aerospace Medicine, School of Aerospace Medicine, Air Force Medical University, Xi'an 710032, China Department of Aviation Medicine, the First Affiliated Hospital, Air Force Medical University, Xi'an 710032, China
| | - M Zhang
- Center of Clinical Aerospace Medicine, School of Aerospace Medicine, Air Force Medical University, Xi'an 710032, China Department of Aviation Medicine, the First Affiliated Hospital, Air Force Medical University, Xi'an 710032, China
| | - Y H Liu
- Center of Clinical Aerospace Medicine, School of Aerospace Medicine, Air Force Medical University, Xi'an 710032, China Department of Aviation Medicine, the First Affiliated Hospital, Air Force Medical University, Xi'an 710032, China
| | - Z R Zhang
- School of Basic Medicine, Medical College of Yan'an University, Yan'an 716000, China
| | - D Wang
- Department of Orthopaedics, Affiliated Hospital of Yan'an University, Yan'an 716000, China
| | - L G Huang
- Department of Otolaryngology-Head and Neck Surgery, the 908th Hospital, Joint Logistics Support Force, Nanchang 360104, China
| | - H Wang
- Center of Clinical Aerospace Medicine, School of Aerospace Medicine, Air Force Medical University, Xi'an 710032, China Department of Aviation Medicine, the First Affiliated Hospital, Air Force Medical University, Xi'an 710032, China
| | - X C Wang
- Center of Clinical Aerospace Medicine, School of Aerospace Medicine, Air Force Medical University, Xi'an 710032, China Department of Aviation Medicine, the First Affiliated Hospital, Air Force Medical University, Xi'an 710032, China
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10
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Zhang MG, Zhou YB, Li CC, Qu MB, Meng JJ, Cai Q, Fan HH, Sun L. [Levels and trends of significant injury-caused deaths in the Chinese population, 2010-2019]. Zhonghua Liu Xing Bing Xue Za Zhi 2022; 43:871-877. [PMID: 35725344 DOI: 10.3760/cma.j.cn112338-20220108-00015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To analyze the level and changing trend of significant injury-caused deaths in the Chinese population from 2010 to 2019 and provide evidence for related intervention. Methods: Data on notable injury-caused deaths in areas under National Disease Surveillance Programs were collected from 2010 to 2019. Crude and standardized mortality rates of four significant injuries were calculated to describe the status of injury-caused deaths. The trend of changes in standardized mortality rates was analyzed using the Joinpoint regression model. Results: The overall trend of standardized mortality rate on an injury during 2010-2019 was consistently decreasing (AAPC=-3.5%, P<0.001) while the general direction of accidental fall standardized mortality rate was increasing (AAPC=1.0%, P=0.104). The standardized mortality rate for significant injuries fluctuated with age, increasing for those aged 50-79 years (AAPC=3.9% for the 50- group, AAPC=5.6% for the 60- group, and AAPC=4.6% for the 70- group, all P<0.001). The standardized mortality rates for all major injuries were higher in males than those in females, with road traffic accidents and drowning declining faster in males than that in females (AAPC=-5.3% in the male road traffic accident group, AAPC=-3.8% in the female road traffic accident group, AAPC=-4.0% in the male drowning group, AAPC=-3.5% in the female drowning group, all P<0.001), and suicide and sequelae declining faster in females than that in males (AAPC=-6.4% in female, AAPC=-4.7% in male, all P<0.001). The standardized mortality rate for significant injuries was higher in rural than that in urban areas and decreased faster than that in urban areas. The central region had the highest standardized mortality rate for suicide and sequelae. The western part had the highest standardized mortality rates for road traffic accidents, accidental falls, and drowning, with the fastest decline in road traffic accidents and drowning (AAPC=-5.3% in the road traffic accident group and AAPC=-5.3% in the drowning group, both P<0.001). Conclusions: The mortality rate from significant injuries in the Chinese population showed a continuous downward trend from 2010 to 2019, with a rebound in the standardized mortality rate from accidental falls in recent years among the elderly, males, rural residents, and central and western regions being the focus of future prevention and control.
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Affiliation(s)
- M G Zhang
- Department of Social Medicine and Health Management, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Y B Zhou
- Department of Social Medicine and Health Management, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - C C Li
- Department of Social Medicine and Health Management, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - M B Qu
- Department of Social Medicine and Health Management, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - J J Meng
- Department of Social Medicine and Health Management, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Q Cai
- Department of Social Medicine and Health Management, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - H H Fan
- Department of Social Medicine and Health Management, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - L Sun
- Department of Social Medicine and Health Management, College of Public Health, Zhengzhou University, Zhengzhou 450001, China
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11
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Li CC, Wang W, Wang ZW, Chen CT. [Analysis of public appeals for vaccination in Guangzhou's Government Hotline from 2018 to 2020]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:397-400. [PMID: 35381666 DOI: 10.3760/cma.j.cn112150-20210729-00729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
This study analyzed the characteristics and change trend of Guangzhou citizens' demands related to vaccination through government hotlines 12345 and 12320 from 2018 to 2020. It understood the hotspots and needs of the public for vaccination work, analyzed the problems existing in vaccination work, and provided reference and suggestions for health departments to improve vaccination services and formulate relevant policies: to timely improve the professional ability and knowledge reserve of hotline personnel; to strengthen the construction of vaccination service system;to optimize the appointment vaccination service application; to scientifically purchase HPV vaccine and ensure the production and supply of vaccine.
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Affiliation(s)
- C C Li
- School of Public Health, Sun Yat-sen University, Guangzhou 510080, China
| | - W Wang
- Department of Immunization Programs,Guangzhou Center for Disease Control and Prevention, Guangzhou 510440, China
| | - Z W Wang
- Hotline Management Department, Guangzhou Center for Disease Control and Prevention, Guangzhou 510440, China
| | - C T Chen
- International Cooperation and Academic Exchange Office, Guangdong Institute of Public Health, Guangzhou 511430, China
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12
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Liu Y, Lyu YB, Wu B, Wei Y, Chen C, Zhou JH, Zhao F, Li XW, Wang J, Li Z, Li CC, Ji SS, Li YW, Guo YB, Ju AP, Xue K, Shi XM, Yu Q. [Association between urinary arsenic levels and anemia among older adults in nine longevity areas of China]. Zhonghua Yi Xue Za Zhi 2022; 102:101-107. [PMID: 35012297 DOI: 10.3760/cma.j.cn112137-20210706-01516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To investigate the association between urinary arsenic levels and anemia among older adults in nine longevity areas of China. Methods: A total of 1 896 subjects aged 65 years and above who participated in the Healthy Aging and Biomarkers Cohort Study (HABCS) in 2017-2018 were included. A self-made questionnaire was used to collect demographic characteristics, lifestyle and other information from the subjects. Through physical examination, data including height, weight and blood pressure were determined and body mass index (BMI) was calculated. Blood and urine samples were collected for the detection of hemoglobin (Hb), blood glucose, blood lipids, plasma vitamin B12 and urinary arsenic concentrations. The urinary arsenic levels were divided into four groups according to the quartiles of urinary arsenic concentrations (μg/g creatinine): Q1 (<18.7), Q2 (18.7-34.5), Q3 (34.6-69.5) and Q4(≥69.6). Multivariate logistic regression model and restricted cubic spline fitting logistic regression model were used to analyze the association between urinary arsenic levels and anemia. Results: The age of the 1 896 subjects (M (Q1, Q3)) was 83 (74, 92) years, including 952 females (50.21%), and the concentration of Hb (M (Q1, Q3)) was 135 (124, 147)g/L. The prevalence of anemia was 24.89% (472 cases). The geometric mean and M (Q1, Q3) of urinary arsenic concentrations were 37.5 and 34.6 (18.7, 69.6)μg/g creatinine, respectively. Multivariate logistic regression model analysis showed that after adjusting for age, gender, BMI, education level, smoking and drinking status, residence, economic level, ethnicity, the status of vitamin B12 deficiency, consumption frequency of aquatic products and meat, the prevalence of hypertension, diabetes and dyslipidemia, urinary arsenic levels were positively associated with anemia (Taking group Q1 as a reference, OR (95%CI) values in Q2, Q3 and Q4 groups were 1.73 (1.20-2.50), 2.08 (1.43-3.02) and 1.52 (1.02-2.28), respectively). The results of restricted cubic spline fitting logistic regression analysis showed a non-linear association between urinary arsenic concentrations and anemia (P<0.001). Subgroup analysis showed there was a negative multiplicative interaction between the prevalence of chronic diseases and urinary arsenic levels with OR (95%CI) was 0.55 (0.30-0.99), while no multiplicative interaction was found between age, gender, residence, smoking status, drinking status and urinary arsenic levels (P>0.05). There was a positive association between urinary arsenic levels and anemia in participants who were absence of chronic diseases,male, living in rural, smoking and drinking with OR (95%CI) values of 3.62 (1.30-10.06),2.46 (1.34-4.52), 1.70 (1.03-2.80), 2.21 (1.01-4.82) and 2.79 (1.23-6.33), respectively. Conclusion: There is a positive association between urinary arsenic levels and anemia among older adults in nine longevity areas of China.
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Affiliation(s)
- Y Liu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Y B Lyu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - B Wu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Y Wei
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - C Chen
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - J H Zhou
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - F Zhao
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - X W Li
- School of Public Health, Jilin University, Changchun 130012, China
| | - J Wang
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Z Li
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - C C Li
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - S S Ji
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Y W Li
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Y B Guo
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - A P Ju
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - K Xue
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - X M Shi
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Q Yu
- School of Public Health, Jilin University, Changchun 130012, China
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13
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Li CC, Tang XY, Zhu YB, Song YJ, Zhao NL, Huang Q, Mou XY, Luo GH, Liu TG, Tong AP, Tang H, Bao R. Structural analysis of the sulfatase AmAS from Akkermansia muciniphila. Acta Crystallogr D Struct Biol 2021; 77:1614-1623. [DOI: 10.1107/s2059798321010317] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 10/05/2021] [Indexed: 11/11/2022] Open
Abstract
Akkermansia muciniphila, an anaerobic Gram-negative bacterium, is a major intestinal commensal bacterium that can modulate the host immune response. It colonizes the mucosal layer and produces nutrients for the gut mucosa and other commensal bacteria. It is believed that mucin desulfation is the rate-limiting step in the mucin-degradation process, and bacterial sulfatases that carry out mucin desulfation have been well studied. However, little is known about the structural characteristics of A. muciniphila sulfatases. Here, the crystal structure of the premature form of the A. muciniphila sulfatase AmAS was determined. Structural analysis combined with docking experiments defined the critical active-site residues that are responsible for catalysis. The loop regions I–V were proposed to be essential for substrate binding. Structure-based sequence alignment and structural superposition allow further elucidation of how different subclasses of formylglycine-dependent sulfatases (FGly sulfatases) adopt the same catalytic mechanism but exhibit diverse substrate specificities. These results advance the understanding of the substrate-recognition mechanisms of A. muciniphila FGly-type sulfatases. Structural variations around the active sites account for the different substrate-binding properties. These results will enhance the understanding of the roles of bacterial sulfatases in the metabolism of glycans and host–microbe interactions in the human gut environment.
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14
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Jing H, Cui P, Qiu MR, Zhang F, Wang BB, Wu Y, Liu HM, Li CC, Wang KY. [One case report of pneumoconiosis in porcelain teeth workers]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2021; 39:619-620. [PMID: 34488275 DOI: 10.3760/cma.j.cn121094-20201012-00572] [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
Porcelain tooth technology is widely used in the treatment of oral diseases, but there are few reports on the possible occupational hazard factors in the process of porcelain tooth production. Porcelain teeth production will produced a large amount of silica dust and metal dust during the grinding process. The technical workers who have been engaged in this work for a long time are very prone to pneumoconiosis due to their poor personal protection awareness. This paper analyzed the clinical data of a pneumoconiosis patient engaged in porcelain tooth making, and analyzed the possible occupational hazard factors in the process of porcelain teeth production, so as to improve the understanding of relevant enterprises, technical workers and medical personnel on the disease and reduce the risk of porcelain teeth production workers suffering from pneumoconiosis.
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Affiliation(s)
- H Jing
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250002, China
| | - P Cui
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250002, China
| | - M R Qiu
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250002, China
| | - F Zhang
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250002, China
| | - B B Wang
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250002, China
| | - Y Wu
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250002, China
| | - H M Liu
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250002, China
| | - C C Li
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250002, China
| | - K Y Wang
- Shandong Academy of Occupational Health and Occupational Medicine, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan 250002, China
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Zhang HJ, Su YY, Xu SL, Chen GQ, Li CC, Jiang RJ, Liu RH, Ge SX, Zhang J, Xia NS, Quan T. Asymptomatic and Symptomatic Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Infections in Close Contacts of Coronavirus Disease 2019 (COVID-19) Patients: A Seroepidemiological Study. Clin Infect Dis 2021; 73:553-554. [PMID: 32544949 PMCID: PMC7337633 DOI: 10.1093/cid/ciaa771] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Hong-Jun Zhang
- Department of Acute Infectious Disease Prevention and Control, Yancheng Center for Disease Control and Prevention, Yancheng, Jiangsu, China
| | - Ying-Ying Su
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Collaborative Innovation Center of Biologic Products, School of Public Health, Xiamen University, Xiamen, Fujian, China
| | - Shi-Lin Xu
- Department of Acute Infectious Disease Prevention and Control, Yancheng Center for Disease Control and Prevention, Yancheng, Jiangsu, China
| | - Guo-Qing Chen
- Department of Acute Infectious Disease Prevention and Control, Yancheng Center for Disease Control and Prevention, Yancheng, Jiangsu, China
| | - Chang-Cheng Li
- Department of Acute Infectious Disease Prevention and Control, Yancheng Center for Disease Control and Prevention, Yancheng, Jiangsu, China
| | - Ren-Jie Jiang
- Department of Acute Infectious Disease Prevention and Control, Yancheng Center for Disease Control and Prevention, Yancheng, Jiangsu, China
| | - Rong-Hai Liu
- Department of Acute Infectious Disease Prevention and Control, Yancheng Center for Disease Control and Prevention, Yancheng, Jiangsu, China
| | - Sheng-Xiang Ge
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Collaborative Innovation Center of Biologic Products, School of Public Health, Xiamen University, Xiamen, Fujian, China
| | - Jun Zhang
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Collaborative Innovation Center of Biologic Products, School of Public Health, Xiamen University, Xiamen, Fujian, China
| | - Ning-Shao Xia
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics, National Institute of Diagnostics and Vaccine Development in Infectious Diseases, Collaborative Innovation Center of Biologic Products, School of Public Health, Xiamen University, Xiamen, Fujian, China
| | - Tang Quan
- Department of Acute Infectious Disease Prevention and Control, Yancheng Center for Disease Control and Prevention, Yancheng, Jiangsu, China
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16
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Wu B, Lyu YB, Zhou JH, Wei Y, Zhao F, Chen C, Li CC, Qu YL, Ji SS, Lu F, Liu YC, Gu H, Song HC, Tan QY, Zhang MY, Cao ZJ, Shi XM. [A cohort study on plasma uric acid levels and the risk of type 2 diabetes mellitus among the oldest old in longevity areas of China]. Zhonghua Yi Xue Za Zhi 2021; 101:1171-1177. [PMID: 33902249 DOI: 10.3760/cma.j.cn112137-20201221-03409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effect of plasma uric acid level on the incident risk of type 2 diabetes mellitus (T2DM) among the oldest old (those aged ≥80 years). Methods: Participants were recruited from the Healthy Aging and Biomarkers Cohort Study (HABCS), which conducted a baseline survey in 2008-2009 and follow-up of 3 times in 2011-2012, 2014, and 2017-2018, respectively. A total of 2 213 oldest old were enrolled in this study. The general demographic, socioeconomic, lifestyle and disease data of the oldest old were collected, and physical measurements were made for the oldest old. Fasting venous blood was collected for uric acid and blood glucose detection. Information on the incident and death of T2DM were collected through the follow-up. Cox proportional hazard regression model was used to explore the association of hyperuricemia and plasma uric acid level with the incidence of T2DM. Restricted cubic spline (RCS) function was used to explore the dose-response relationship of plasma uric acid levels with the risk of T2DM. Results: The age of participants was (93.2±7.6) years old, and 66.7% of the participants (1 475) were female. The plasma uric acid level at baseline was (289.1±88.0)μmol/L, and the prevalence of hyperuricemia was 13.3% (294 cases). During 9 years of cumulative follow-up of 7 471 person-years (average of 3.38 years for each), 122 new cases of T2DM occurred and the incidence density was 1 632.98/105 person year. Cox proportional hazards regression analysis showed that per 10μmol/L increase in plasma uric acid level, the risk of T2DM increased by 1.1% [HR (95%CI): 1.011 (1.004, 1.017)]. Compared with the participants with the lowest quintile of plasma uric acid (Q1), the risk of diabetes increased by 20.7 % among the oldest old with uric acid in the highest quintile (Q5) [HR (95%CI):1.207 (1.029, 1.416)]. The risk of T2DM was 19.2% higher in the hyperuricemia group than that in the oldest old with normal plasma uric acid [HR (95%CI): 1.192 (1.033, 1.377)]. RCS function showed that the risk of T2DM increased with the increase in plasma uric acid levels in a nonlinear dose-response relationship (P=0.016). Conclusion: The incident risk of T2DM increases with the elevates of plasma uric acid levels in the oldest old.
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Affiliation(s)
- B Wu
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Y B Lyu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - J H Zhou
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Y Wei
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - F Zhao
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - C Chen
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - C C Li
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Y L Qu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - S S Ji
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - F Lu
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Y C Liu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - H Gu
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - H C Song
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Q Y Tan
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - M Y Zhang
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Z J Cao
- China CDC Key Laboratory of Environment and Population Health, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - X M Shi
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
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17
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Ji SS, Lyu YB, Qu YL, Chen C, Li CC, Zhou JH, Li Z, Zhang WL, Li YW, Liu YC, Zhao F, Zhu HJ, Shi XM. [Association of sleep duration with cognitive impairment among older adults aged 65 years and older in China]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:31-38. [PMID: 33355766 DOI: 10.3760/cma.j.cn112150-20200916-01208] [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: 06/12/2023]
Abstract
Objective: The study is to examine association of sleep duration and cognitive impairment in the older adults aged 65 years and older in China. Methods: We analyzed data from 2017-2018 wave of Chinese Longitudinal Healthy Longevity Survey (CLHLS). A total of 14 966 participants were included in the analysis. Data with respect to socioeconomic status, community involvement, behavior pattern, diet, life style, family structure, disease condition, mental health and cognitive function were collected. Cognitive function was measured with Mini-mental State Examination (MMSE). We conducted generalized linear mixed models to examine associations of sleep duration with cognitive impairment, and subgroup analyses of sex and age were conducted. Results: Among 14 966 participants, the percentage of participants aged 65 to 79 years, 80 to 89 years, 90 to 99 years and 100 years and older was 5 148 (4.40%), 3 777 (25.24%), 3 322 (22.20%) and 2 719 (18.16%), respectively. A total of 2 704 participants reported sleep duration of 5 h and less, and 3 883 reported 9 h and more, accounting for 18.94% and 27.19%, respectively. In total, 3 748 were defined with cognitive impairment, accounting for 25.04%. The results of generalized linear mixed models showed that both short (≤5 h) and long (≥ 9 h) sleep duration were associated with cognitive impairment compared with sleep duration of 7 h, with OR(95%CI) of 1.35(1.09-1.68) and 1.70(1.39-2.07), respectively. The association of sleep duration with cognitive impairment was more obvious in males and individuals aged 65 to 79 years old. Conclusion: Short or long sleep duration was responsible for increased risk of cognitive impairment in older Chinese.
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Affiliation(s)
- S S Ji
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Y B Lyu
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Y L Qu
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - C Chen
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - C C Li
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - J H Zhou
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Z Li
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - W L Zhang
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Y W Li
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Y C Liu
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - F Zhao
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - H J Zhu
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - X M Shi
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
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Tan QY, Lyu YB, Zhou JH, Zhang MY, Chen C, Zhao F, Li CC, Qu YL, Ji SS, Lu F, Liu YC, Gu H, Wu B, Cao ZJ, Zhao SH, Shi XM. [Association of blood oxidative stress level with hypertriglyceridemia in the elderly aged 65 years and older in 9 longevity areas of China]. Zhonghua Yu Fang Yi Xue Za Zhi 2021; 55:18-24. [PMID: 33355764 DOI: 10.3760/cma.j.cn112150-20200728-01065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the association of blood oxidative stress level with hypertriglyceridemia in the elderly aged 65 years and older in China. Methods: A total of 2 393 participants aged 65 years and older were recruited in 9 longevity areas from Heathy Aging and Biomarkers Cohort Study, during 2017 to 2018. Information on demographics characteristic, life style and health status were collected by questionnaire and physical examination, and venous blood was collected to detect the levels of blood oxidative stress and hypertriglyceridemia. The linear or non-linear association between oxidative stress and hypertriglyceridemia was described by restrictive cubic splines (RCS) fitting multiple linear regression model. The generalized linear mixed effect model was conducted to assess the association between oxidative stress and hypertriglyceridemia. Results: A total of 2 393 participants, mean age was 84.6 years, the youngest was 65 and the oldest was 112, the male was 47.9%(1 145/2 393), the triglyceride level was (1.4±0.8) mmol/L. The hypertriglyceridemia detection rate was 9.99%(239/2 393). The results of multiple linear regression model with restrictive cubic spline fitting showed that MDA level was linear association with triglyceride level; SOD level was nonlinear association with triglyceride level. MDA level had significantly association with hypertriglyceridemia, and the corresponding OR value was 1.063 (95%CI: 1.046,1.081) with 1 nmol/ml increment of blood MDA; SOD level had significantly association with hypertriglyceridemia, and the corresponding OR value was 0.986(95%CI: 0.983,0.989) with 1 U/ml increment of blood SOD. Conclusion: Among the elderly aged 65 and older in 9 longevity areas in China, MDA and SOD levels were associated with the risk of hypertriglyceridemia.
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Affiliation(s)
- Q Y Tan
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Y B Lyu
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - J H Zhou
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - M Y Zhang
- School of Public Health, Jilin University, Changchun 130012, China
| | - C Chen
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - F Zhao
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - C C Li
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Y L Qu
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - S S Ji
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - F Lu
- Beijing Municipal Health Commission Information Center, (Beijing Municipal Health Commission Policy Research Center), Beijing 100034, China
| | - Y C Liu
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - H Gu
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - B Wu
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Z J Cao
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - S H Zhao
- School of Public Health, Jilin University, Changchun 130012, China
| | - X M Shi
- China CDC Key Laboratory of Environment and Population Health/National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
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Yan F, Liu SW, Li XY, Li CC, Wu Y. Silencing LncRNA LINC01305 inhibits epithelial mesenchymal transition in lung cancer cells by regulating TNXB-mediated PI3K/Akt signaling pathway. J BIOL REG HOMEOS AG 2020; 34:499-508. [PMID: 32549529 DOI: 10.23812/20-73-a-33] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The aim of this study was to investigate whether LINC01305 can regulate TNXB-mediated phosphatidilinositol 3-kinase (PI3K)/protein kinase B (Akt) signaling pathway and therefore affect epithelial mesenchymal transition in lung cancer cells. Quantitative real-time polymerase chain reaction (qRT-PCR) was conducted to detect LINC01305 level in 52 non-small cell lung cancer (NSCLC) tissues and paracancerous normal lung tissues, and the relationship between LINC01305 expression and clinical pathological parameters of these subjects was analyzed. After LINC01305 was knocked down in PC9 cell and overexpressed in A549 cells, qRT-PCR was used to verify the transfection efficiency, and nuclear fractionation technique, cell counting kit-8 (CCK-8), plate cloning assay and Transwell test were used to detect the effect of LINC01305 on cell viability. LINC01305 had an obviously higher expression in NSCLC tissues, and the expression in lung cancer patients with tumor size >3 cm was higher than those with tumor ≤3 cm. LINC01305 expression in tumor tissues in T3-T4 stage was obviously higher than those in T1-T2 stage, and the overall survival rate of lung cancer patients with high expression of LINC01305 was lower than those with low expression. Moreover, clinical analysis revealed that LINC01305 level was related to tumor size, TNM stage and lymph node metastasis of patients with lung cancer, but not related to age or gender. Silencing LINC01305 can inhibit the epithelial mesenchymal transition-induced transformation of lung cancer cells through regulating TNXB-mediated PI3K/Akt signaling pathway, which in turn affects the progression of lung cancer.
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Affiliation(s)
- F Yan
- Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & the Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - S W Liu
- Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & the Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - X Y Li
- Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & the Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - C C Li
- Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & the Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
| | - Y Wu
- Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & the Affiliated Cancer Hospital of Nanjing Medical University, Nanjing, China
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Zhao NL, Zhang QQ, Zhao C, Liu L, Li T, Li CC, He LH, Zhu YB, Song YJ, Liu HX, Bao R. Structural and molecular dynamic studies of Pseudomonas aeruginosa OdaA reveal the regulation role of a C-terminal hinge element. Biochim Biophys Acta Gen Subj 2020; 1865:129756. [PMID: 33010351 DOI: 10.1016/j.bbagen.2020.129756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 09/18/2020] [Accepted: 09/27/2020] [Indexed: 02/08/2023]
Abstract
BACKGROUND Crotonase superfamily members exhibit great catalytic diversity towards various acyl-CoA substrates. A common CoA moiety binding pattern is usually observed in this family, understanding the substrate-binding mechanism would facilitate the rational engineering of crotonases for improved properties. METHODS We applied X-ray crystallography to investigate a putative enoyl-CoA hydratase/isomerase OdaA in Pseudomonas aeruginosa. Thermal shift assay (TSA) were performed to explore the binding of OdaA with CoA thioester substrates. Furthermore, we performed molecular dynamics (MD) simulations to elucidate the dynamics of its CoA-binding site. RESULTS We solved the crystal structures of the apo and CoA-bound OdaA. Thermal shift assay (TSA) showed that CoA thioester substrates bind to OdaA with a different degree. MD simulations demonstrated that the C-terminal alpha helix underwent a structural transition and a hinge region would associate with this conformational change. CONCLUSIONS TSA in combination with MD simulations elucidate that the dynamics of C-terminal alpha helix in CoA-binding, and a hinge region play an important role in conformational change. GENERAL SIGNIFICANCE Those results help to extend our knowledge about the nature of crotonases and would be informative for future mechanistic studies and industry applications.
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Affiliation(s)
- Ning-Lin Zhao
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China
| | - Qian-Qian Zhang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Chang Zhao
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China
| | - Li Liu
- Department of dermatology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
| | - Tao Li
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China
| | - Chang-Cheng Li
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China
| | - Li-Hui He
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China
| | - Yi-Bo Zhu
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China
| | - Ying-Jie Song
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China
| | - Huan-Xiang Liu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China.
| | - Rui Bao
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China.
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21
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Li CC, Yang MJ, Yang J, Kang M, Li T, He LH, Song YJ, Zhu YB, Zhao NL, Zhao C, Huang Q, Mou XY, Li H, Tong AP, Tang H, Bao R. Structural and biochemical analysis of 1-Cys peroxiredoxin ScPrx1 from Saccharomyces cerevisiae mitochondria. Biochim Biophys Acta Gen Subj 2020; 1864:129706. [PMID: 32805320 DOI: 10.1016/j.bbagen.2020.129706] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 07/13/2020] [Accepted: 08/05/2020] [Indexed: 02/08/2023]
Abstract
BACKGROUND ScPrx1 is a yeast mitochondrial 1-Cys peroxiredoxins (Prx), a type of Prx enzyme which require thiol-containing reducing agents to resolve its peroxidatic cysteine. ScPrx1 plays important role in protection against oxidative stress. Mitochondrial thioredoxin ScTrx3 and glutathione have been reported to be the physiological electron donor for ScPrx1. However, the mechanism underlying their actions, especially the substrate recognition of ScPrx1 requires additional elucidation. METHODS The structure of ScPrx1 was obtained through crystallization experiments. The oligomeric state of ScPrx1 was monitored by Blue-Native PAGE. Mutations were generated by the QuikChange PCR-based method. The ScPrx1 activity assay was carried out by measuring the change of 340 nm absorption of the NADPH oxidation. RESULTS ScPrx1 exist as a homodimer in solution. The structure adopts a typical Prx-fold core which is preceded by an N-terminal β-hairpin and has a C-terminal extension. Mutations (Glu94Ala, Arg198Ala and Trp126) close to the active site could enhance the catalytic efficiency of ScPrx1 while His83Ala and mutations on α4-β6 region exhibited reduced activity. The biochemical data also show that the deletion or mutations on ScPrx1 C-terminal have 2-4.56 fold increased activity. CONCLUSION We inferred that conformational changes of ScPrx1 C-terminal segment were important for its reaction, and the α4-β6 loop regions around the ScPrx1 active sites were important for the catalytic function of ScPrx1. Collectively, these structural features provides a basis for understanding the diverse reductant species usage in different 1-Cys Prxs.
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Affiliation(s)
- Chang-Cheng Li
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West, China Hospital, Sichuan University and Collaborative Innovation Center
| | - Mei-Jia Yang
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West, China Hospital, Sichuan University and Collaborative Innovation Center
| | - Jing Yang
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West, China Hospital, Sichuan University and Collaborative Innovation Center
| | - Mei Kang
- Department of Laboratory medicine, West, China Hospital, Sichuan University
| | - Tao Li
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West, China Hospital, Sichuan University and Collaborative Innovation Center
| | - Li-Hui He
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West, China Hospital, Sichuan University and Collaborative Innovation Center
| | - Ying-Jie Song
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West, China Hospital, Sichuan University and Collaborative Innovation Center
| | - Yi-Bo Zhu
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West, China Hospital, Sichuan University and Collaborative Innovation Center
| | - Ning-Lin Zhao
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West, China Hospital, Sichuan University and Collaborative Innovation Center
| | - Chang Zhao
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West, China Hospital, Sichuan University and Collaborative Innovation Center
| | - Qin Huang
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West, China Hospital, Sichuan University and Collaborative Innovation Center
| | - Xing-Yu Mou
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West, China Hospital, Sichuan University and Collaborative Innovation Center
| | - Hong Li
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West, China Hospital, Sichuan University and Collaborative Innovation Center
| | - Ai-Ping Tong
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West, China Hospital, Sichuan University and Collaborative Innovation Center
| | - Hong Tang
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West, China Hospital, Sichuan University and Collaborative Innovation Center
| | - Rui Bao
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West, China Hospital, Sichuan University and Collaborative Innovation Center.
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Li CC, Shi P, Du LP, Yuan XC. Mapping the near-field spin angular momenta in the structured surface plasmon polariton field. Nanoscale 2020; 12:13674-13679. [PMID: 32573606 DOI: 10.1039/d0nr00618a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Optical spin angular momenta in a confined electromagnetic field exhibit a remarkable difference with their free space counterparts; in particular, the optical transverse spin that is locked with the energy propagating direction lays the foundation for many intriguing physical effects such as unidirectional transportation, quantum spin Hall effects, photonic Skyrmions, etc. In order to investigate the underlying physics behind the spin-orbit interactions as well as to develop the optical spin-based applications, it is crucial to uncover the spin texture in a confined field, yet it faces challenges due to their chiral and near-field vectorial features. Here, we propose a scanning imaging technique which can map the near-field distributions of the optical spin angular momenta with an achiral dielectric nanosphere. The spin angular momentum component normal to the interface can be uncovered experimentally by employing the proposed scanning imaging technique and the three-dimensional spin vector can be reconstructed theoretically with the experimental results. The experiment is demonstrated on the example of surface plasmon polaritons excited with various vector vortex beams under a tight-focusing configuration, where the spin-orbit interaction emerges clearly. The proposed method, which can be utilized to reconstruct the photonic Skyrmion and other photonic topological structures, is straightforward and of high precision, and hence it is expected to be valuable for the study of near-field spin optics and topological photonics.
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Affiliation(s)
- C C Li
- Nanophotonics Research Center, Shenzhen Key Laboratory of Micro-Scale Optical Information Technology & Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China.
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Xie SF, Li CC, He H, Xia XY, Wang XT. [Current advances in research of burning mouth syndrome: biological nerve and social psychology patterns]. Zhonghua Kou Qiang Yi Xue Za Zhi 2020; 55:123-128. [PMID: 32074676 DOI: 10.3760/cma.j.issn.1002-0098.2020.02.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Burning mouth syndrome (BMS) is a complex chronic disorder characterized symptomatically by burning sensation mainly localized in the tongue with no specific lesions. Its etiology is not fully understood. Due to the persistent pain and unsatisfactory outcome of treatment, patients with high expectation when seeking medical advice easily feel discontent after treatment, which might cause medical dispute. This review introduces the epidemiology, manifestations, etiology, diagnosis, classification and treatment of BMS. The authors hope the current advances about BMS, mainly focus on the etiology of biological nerve and social psychology, may help the clinicians in treatment of BMS.
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Affiliation(s)
- S F Xie
- Department of Oral Medicine, The Affiliated Stomatology Hospital, Zhejiang University School of Medicine, Zhejiang University School of Stomatology & Key Laboratory of Oral Biomedical Research of Zhejiang Province, Hangzhou 310006, China
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24
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Li CC, Zhan JL, Chen ZZ, Jiao F, Chen YF, Chen YY, Nie JX, Kang XN, Li SF, Wang Q, Zhang GY, Shen B. Operating behavior of micro-LEDs on a GaN substrate at ultrahigh injection current densities. Opt Express 2019; 27:A1146-A1155. [PMID: 31510496 DOI: 10.1364/oe.27.0a1146] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 07/03/2019] [Indexed: 06/10/2023]
Abstract
Near-ultraviolet micro-LEDs with different diameters were fabricated on GaN substrates. The electroluminescence and the light output power-current density and current density-voltage relationships were measured. A saturated current density of 358 kA/cm2 was achieved with a 20 µm LED. The ideality factor curves showed steps and peaks when the injection current density was increased from 20 to 150 kA/cm2 and an abnormal efficiency increase. The transport and recombination processes of micro-LEDs at high injection current densities were simulated, and the many-body effect and phase space filling in the integrated quantum drift-diffusion model were considered. Serious current crowding was observed above 100 kA/cm2, even for the 20 µm LED.
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Xu XH, Liao Q, Wu MJ, Geng YX, Li DY, Zhu JG, Li CC, Hu RH, Shou YR, Chen YH, Lu HY, Ma WJ, Zhao YY, Zhu K, Lin C, Yan XQ. Detection and analysis of laser driven proton beams by calibrated Gafchromic HD-V2 and MD-V3 radiochromic films. Rev Sci Instrum 2019; 90:033306. [PMID: 30927782 DOI: 10.1063/1.5049499] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Accepted: 03/03/2019] [Indexed: 06/09/2023]
Abstract
The radiochromic film (RCF) is a high-dose, high-dynamic range dosimetry detection medium. A stack of RCFs can be used to detect both spatial and energetic distribution of laser driven ion beams with a large divergence angle and continuous energy spectrum. Two types of RCFs (HD-V2 and MD-V3, from Radiation Products Design, Inc.) have been calibrated using MeV energy protons and carbon ions produced by using a 2 × 6 MV tandem electrostatic accelerator. The proportional relationship is obtained between the optical density and the irradiation dose. For protons, the responses are consistent at all energies with a variation of about 15%. For carbon ions, the responses are energy related, which should be noted for heavy ion detection. Based on the calibration, the broad energy spectrum and charge distribution of laser accelerated proton beam with energy from 3 to 8 MeV and pC charge were detected and reconstructed at the Compact LAser Plasma Accelerator at Peking University.
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Affiliation(s)
- X H Xu
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing 100871, China
| | - Q Liao
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing 100871, China
| | - M J Wu
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing 100871, China
| | - Y X Geng
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing 100871, China
| | - D Y Li
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing 100871, China
| | - J G Zhu
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing 100871, China
| | - C C Li
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing 100871, China
| | - R H Hu
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing 100871, China
| | - Y R Shou
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing 100871, China
| | - Y H Chen
- State Key Labaratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - H Y Lu
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing 100871, China
| | - W J Ma
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing 100871, China
| | - Y Y Zhao
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing 100871, China
| | - K Zhu
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing 100871, China
| | - C Lin
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing 100871, China
| | - X Q Yan
- State Key Laboratory of Nuclear Physics and Technology, and Key Laboratory of HEDP of the Ministry of Education, CAPT, Peking University, Beijing 100871, China
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Fang F, Pan L, Bo LY, Li WP, Fu EQ, Li CC, Jin FG. [Diagnostic value of endobronchial ultrasonography with guide-sheath combined with virtual bronchoscopy navigation in peripheral lung cancer]. Zhonghua Jie He He Hu Xi Za Zhi 2019; 41:472-476. [PMID: 29886622 DOI: 10.3760/cma.j.issn.1001-0939.2018.06.008] [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: 02/06/2023]
Abstract
Objective: To explore the diagnostic value and safety of endobronchial ultrasonography with guide-sheath (EBUS-GS) combined with virtual bronchoscopy navigation (VBN) in peripheral lung cancer. Methods: Between Dec. 2015 to Dec. 2016, patients with pulmonary solitary nodule suspected of early lung cancer on computed tomography (CT) in Department of Respiratory, Tangdu Hospital, Fourth Military Medical University were enrolled for this study. The patients underwent EBUS-GS transbronchoscopic lung biopsy (TBLB) with or without VBN. The visibility rate, diagnostic yield, influencing factors, the operation time and complications were evaluated in the 2 groups. The data were compared using independent sample t test or chi-squared test. Results: A total of 134 patients were enrolled and completed this study. Among them 74 were males and 60 were females. There were 64 cases in the group of EBUS-GS with VBN (VBNA), and 70 in the group without VBN (NVBNA). The visibility rate and diagnosis rate of VBNA group were 87.5% (56/64) and 78.1% (50/64), respectively. The mean time of operation and confirming the target lesions were (25±5), (5.8±1.3) min, respectively. The visibility rate and diagnosis rate of NVBNA group were 81.4%(57/70) and 75.7%(53/70), respectively. The mean time of operation and confirming the target lesions were (27±6), (9.8±1.5)min .There was no significant difference in the visibility rate and diagnosis rate between the 2 groups (χ(2)=0.933, P=0.334; χ(2)=0.109, P=0.838). There was no significant difference in the mean operation time between the 2 groups(t=0.633, P=0.524). But the time of confirming the target lesions between the 2 groups was statistically different (t=17.41, P<0.01). EBUS-GS-TBLB was well tolerated. No severe complications such as pneumothorax or chest pain were observed. There were 3 patients in the VBNA group and 7 patients in the NVBNA group experiencing a small amount of biopsy site bleeding. The incidence of complications did not differ between the 2 groups(χ(2)=1.366, P=0.330). Conclusions: VBN could not improve the diagnostic yield of EBUS-GS. However, it could shorten the time needed to confirm the target lesions and did not increase the incidence of EBUS-GS complications, indicating that EBUS-GS with VBN was a safe and effective method.
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Affiliation(s)
- F Fang
- Department of Respiratory Medicine, Tangdu Hospital, Fourth Military Medical University, Xi'an 710038, China
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Duan YL, Zhu Y, Xu BP, Li CC, Chen AH, Deng L, Bao YX, Cao L, Sun Y, Ning LM, Fu Z, Liu CY, Yin J, Shen KL, Zhou YL, Xie ZD. [Multicenter study of human adenovirus infection in pediatric community-acquired pneumonia in China]. Zhonghua Er Ke Za Zhi 2019; 57:27-32. [PMID: 30630228 DOI: 10.3760/cma.j.issn.0578-1310.2019.01.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Objective: To investigate the predominant genotypes and epidemiological characteristics of human adenovirus (HAdV) in pediatric community-acquired pneumonia (CAP) in China. Methods: This was a repeated cross sectional study. Between November 2014 and November 2016, nasopharyngeal aspirates (NPAs) or throat swabs from each hospitalized pediatric patients diagnosed as CAP in 12 hospitals in Northern and Southern China were collected. Respiratory specimens were screened for 18 respiratory viruses including HAdV by using Luminex xTAG RVP Fast V2 multiplex Assay. Typing of HAdV and analysis for the epidemiological characteristic of HAdV were performed. Results: (1) A total of 2 723 hospitalized pediatric patients with CAP were enrolled in this study and 156 (5.7%, 156/2 723) respiratory specimens were positive for HAdV, and 74 (6.6%, 74/1 128) and 82 (5.1%, 82/1 595) were in Northern and Southern China, respectively. There was no significant difference in the positive detection rate between the Northern and Southern China. (2) In Northern China, the HAdV positive rate of children at the age of <6 months, 6 months-<1 years, 1-<3 years, 3-<5 years and ≥5 years was 5.9%(6/101), 6.7%(7/104), 10.3%(34/331), 4.1%(11/266) and 4.9%(16/326), respectively, and the incidence of HAdV infection peaked in children aged 1-3 years (χ(2)=11.511, P=0.021). While in Southern China the HAdV positive rate of children at the age of <6 months, 6 months-<1 years, 1-<3 years, 3-<5 years and ≥5 years was 2.2% (7/312), 4.6% (12/259), 6.3% (31/494), 7.3% (18/245) and 4.9%(14/285), respectively. There was no significant difference in the positive detection rate among age groups. (3) In 2015, the highest detection rate of HAdV in northern China was 12.5% (25/200) in winter, and in Southern China was 6.7% (35/525) in spring and 5.3% (19/357) in summer. (4) In 108 cases of HAdV positive specimens typing was done and 80 in cases classification was successfully performed.Totally 7 genotypes of HAdV, including HAdV-3 (n=32), HAdV-7 (n=9), HAdV-1 (n=12), HAdV-2 (n=15), HAdV-5 (n=10), HAdV-6 (n=1) and HAdV-4 (n=1), were detected. The predominant HAdV genotypes were HAdV-3 (30.8%, 8/26) and HAdV-7 (26.9%, 7/26) in Northern China, while HAdV-3 (44.4%, 24/54) and HAdV-2 (22.2%, 12/54) were the most prevalent genotypes in Southern China. Conclusions: HAdV is an important viral pathogen in pediatric CAP. The predominant HAdV genotypes and peak seasons of HAdV infections were different between Northern and Southern China. The predominant HAdV genotypes were HAdV-3 and HAdV-7 in Northern China, while HAdV-3 and HAdV-2 in Southern China. The peak season of HAdV infections was winter in Northern China. However, HAdV infections are more common in spring and summer in Southern China.
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Affiliation(s)
- Y L Duan
- Beijing Key Laboratory of Pediatric Respiratory Infectious Diseases, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, National Key Discipline of Pediatrics (Capital Medical University), Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Y Zhu
- Beijing Key Laboratory of Pediatric Respiratory Infectious Diseases, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, National Key Discipline of Pediatrics (Capital Medical University), Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - B P Xu
- Beijing Key Laboratory of Pediatric Respiratory Infectious Diseases, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, National Key Discipline of Pediatrics (Capital Medical University), Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - C C Li
- the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
| | - A H Chen
- the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - L Deng
- Guangzhou Women and Children's Medical Center, Guangzhou 510623, China
| | - Y X Bao
- Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, China
| | - L Cao
- Children's Hospital Capital Institute of Pediatrics, Beijing 100020, China
| | - Y Sun
- Yinchuan Women and Children Healthcare Hospital, Yinchuan 750001, China
| | - L M Ning
- Children's Hospital of Changchun, Changchun 130000, China
| | - Z Fu
- Children's Hospital of Chongqing Medical University, Chongqing 150001, China
| | - C Y Liu
- Beijing Key Laboratory of Pediatric Respiratory Infectious Diseases, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, National Key Discipline of Pediatrics (Capital Medical University), Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - J Yin
- Beijing Key Laboratory of Pediatric Respiratory Infectious Diseases, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, National Key Discipline of Pediatrics (Capital Medical University), Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - K L Shen
- Beijing Key Laboratory of Pediatric Respiratory Infectious Diseases, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, National Key Discipline of Pediatrics (Capital Medical University), Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
| | - Y L Zhou
- the Children's Hospital of Zhejiang University School of Medicine, Hangzhou 310052, China
| | - Z D Xie
- Beijing Key Laboratory of Pediatric Respiratory Infectious Diseases, Key Laboratory of Major Diseases in Children, Ministry of Education, National Clinical Research Center for Respiratory Diseases, National Key Discipline of Pediatrics (Capital Medical University), Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing 100045, China
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Liu L, Li T, Peng CT, Sun CZ, Li CC, Xiao QJ, He LH, Wang NY, Song YJ, Zhu YB, Li H, Kang M, Tang H, Xiong X, Bao R. Structural characterization of a Δ 3, Δ 2-enoyl-CoA isomerase from Pseudomonas aeruginosa: implications for its involvement in unsaturated fatty acid metabolism. J Biomol Struct Dyn 2018; 37:2695-2702. [PMID: 30052139 DOI: 10.1080/07391102.2018.1495102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Gene PA4980 from Pseudomonas aeruginosa encodes a putative enoyl-coenzyme A hydratase/isomerase that is associated with the function of the biofilm dispersion-inducing signal molecule cis-2-decenoic acid. To elucidate the role of PA4980 in cis-2-decenoic acid biosynthesis, we reported the crystal structure of its protein product at 2.39 Å. The structural analysis and substrate binding prediction suggest that it acts as a monofunctional enoyl-coenzyme A isomerase, implicating an alternative pathway of the cis-2-decenoic acid synthesis.
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Affiliation(s)
- Li Liu
- a Department of Dermatology , Affiliated Hospital, Southwest Medical University , Luzhou , China.,b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China
| | - Tao Li
- b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China
| | - Cui-Ting Peng
- b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China
| | - Chang-Zhen Sun
- e Drug Research Center of Integrated Traditional Chinese and Western Medicine, Affiliated Traditional Chinese Medicine Hospital , Southwest Medical University , Luzhou , China
| | - Chang-Cheng Li
- b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China
| | - Qing-Jie Xiao
- b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China
| | - Li-Hui He
- b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China
| | - Ning-Yu Wang
- c School of Life Science and Engineering , Southwest Jiaotong University , Chengdu , P.R. China
| | - Ying-Jie Song
- b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China
| | - Yi-Bo Zhu
- b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China
| | - Hong Li
- b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China
| | - Mei Kang
- b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China
| | - Hong Tang
- b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China
| | - Xia Xiong
- a Department of Dermatology , Affiliated Hospital, Southwest Medical University , Luzhou , China
| | - Rui Bao
- b Center of Infectious Diseases, West China Hospital , Sichuan University , Chengdu , P.R. China.,d State Key Laboratory of Biotherapy and Cancer Center and Healthy Food Evaluation Research Center , Sichuan University , Chengdu , P.R. China
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Li CC, Zhu XP. [Temporary neonatal cyanosis caused by heterozygous mutation of HBG2 gene]. Zhonghua Er Ke Za Zhi 2018; 56:779-780. [PMID: 30293284 DOI: 10.3760/cma.j.issn.0578-1310.2018.10.012] [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: 06/08/2023]
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30
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Liu L, Li T, Cheng XJ, Peng CT, Li CC, He LH, Ju SM, Wang NY, Ye TH, Lian M, Xiao QJ, Song YJ, Zhu YB, Yu LT, Wang ZL, Bao R. Author Correction: Structural and functional studies on Pseudomonas aeruginosa DspI: implications for its role in DSF biosynthesis. Sci Rep 2018; 8:12632. [PMID: 30116011 PMCID: PMC6095887 DOI: 10.1038/s41598-018-30920-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Affiliation(s)
- Li Liu
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China.,Department of Dermatology, Southwest Medical University, affiliated hospital, Luzhou, China
| | - Tao Li
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Xing-Jun Cheng
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Cui-Ting Peng
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Chang-Cheng Li
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Li-Hui He
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Si-Min Ju
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Ning-Yu Wang
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Ting-Hong Ye
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Mao Lian
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Qing-Jie Xiao
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Ying-Jie Song
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Yi-Bo Zhu
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Luo-Ting Yu
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China.
| | - Zhen-Ling Wang
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China.
| | - Rui Bao
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China.
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Liu L, Li T, Cheng XJ, Peng CT, Li CC, He LH, Ju SM, Wang NY, Ye TH, Lian M, Xiao QJ, Song YJ, Zhu YB, Yu LT, Wang ZL, Bao R. Structural and functional studies on Pseudomonas aeruginosa DspI: implications for its role in DSF biosynthesis. Sci Rep 2018; 8:3928. [PMID: 29500457 PMCID: PMC5834635 DOI: 10.1038/s41598-018-22300-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 02/15/2018] [Indexed: 02/05/2023] Open
Abstract
DspI, a putative enoyl-coenzyme A (CoA) hydratase/isomerase, was proposed to be involved in the synthesis of cis-2-decenoic acid (CDA), a quorum sensing (QS) signal molecule in the pathogen Pseudomonas aeruginosa (P. aeruginosa). The present study provided a structural basis for the dehydration reaction mechanism of DspI during CDA synthesis. Structural analysis reveals that Glu126, Glu146, Cys127, Cys131 and Cys154 are important for its enzymatic function. Moreover, we show that the deletion of dspI results in a remarkable decreased in the pyoverdine production, flagella-dependent swarming motility, and biofilm dispersion as well as attenuated virulence in P. aeruginosa PA14. This study thus unravels the mechanism of DspI in diffusible signal factor (DSF) CDA biosynthesis, providing vital information for developing inhibitors that interfere with DSF associated pathogenicity in P. aeruginosa.
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Affiliation(s)
- Li Liu
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
- Department of Dermatology, Southwest Medical University, affiliated hospital, Luzhou, China
| | - Tao Li
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Xing-Jun Cheng
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Cui-Ting Peng
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Chang-Cheng Li
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Li-Hui He
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Si-Min Ju
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Ning-Yu Wang
- School of Life Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Ting-Hong Ye
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Mao Lian
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Qing-Jie Xiao
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Ying-Jie Song
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Yi-Bo Zhu
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China
| | - Luo-Ting Yu
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China.
| | - Zhen-Ling Wang
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China.
| | - Rui Bao
- Center of Infectious Diseases, West China Hospital, Sichuan University, Chengdu, China.
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Peng CT, Liu L, Li CC, He LH, Li T, Shen YL, Gao C, Wang NY, Xia Y, Zhu YB, Song YJ, Lei Q, Yu LT, Bao R. Structure-Function Relationship of Aminopeptidase P from Pseudomonas aeruginosa. Front Microbiol 2017; 8:2385. [PMID: 29259588 PMCID: PMC5723419 DOI: 10.3389/fmicb.2017.02385] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 11/20/2017] [Indexed: 02/05/2023] Open
Abstract
PepP is a virulence-associated gene in Pseudomonas aeruginosa, making it an attractive target for anti-P. aeruginosa drug development. The encoded protein, aminopeptidases P (Pa-PepP), is a type of X-prolyl peptidase that possesses diverse biological functions. The crystal structure verified its canonical pita-bread fold and functional tetrameric assembly, and the functional studies measured the influences of different metal ions on the activity. A trimetal manganese cluster was observed at the active site, elucidating the mechanism of inhibition by metal ions. Additionally, a loop extending from the active site appeared to be important for specific large-substrate binding. Based on the structural comparison and bacterial invasion assays, we showed that this non-conserved surface loop was critical for P. aeruginosa virulence. Taken together, these findings can extend our understanding of the catalytic mechanism and virulence-related functions of Pa-PepP and provide a solid foundation for the design of specific inhibitors against pathogenic-bacterial infections.
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Affiliation(s)
- Cui-Ting Peng
- Pharmaceutical and Biological Engineering Department, School of Chemical Engineering, Sichuan University, Chengdu, China,Center of Infectious Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China
| | - Li Liu
- Pharmaceutical and Biological Engineering Department, School of Chemical Engineering, Sichuan University, Chengdu, China,Center of Infectious Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China
| | - Chang-Cheng Li
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China
| | - Li-Hui He
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China
| | - Tao Li
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China
| | - Ya-Lin Shen
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China
| | - Chao Gao
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China
| | - Ning-Yu Wang
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China,School of Life Sciences and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Yong Xia
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China
| | - Yi-Bo Zhu
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China
| | - Ying-Jie Song
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China
| | - Qian Lei
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China
| | - Luo-Ting Yu
- Pharmaceutical and Biological Engineering Department, School of Chemical Engineering, Sichuan University, Chengdu, China,Center of Infectious Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China,*Correspondence: Rui Bao, Luo-Ting Yu,
| | - Rui Bao
- Center of Infectious Diseases, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University and Collaborative Innovation Center, Chengdu, China,*Correspondence: Rui Bao, Luo-Ting Yu,
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Dong L, Zhang XY, Li CC, Li Z, Xia YQ. [Characteristics of epidemiology and antimicrobial resistance of gram-negative bacterial bloodstream infections in children]. Zhonghua Er Ke Za Zhi 2017; 55:683-688. [PMID: 28881515 DOI: 10.3760/cma.j.issn.0578-1310.2017.09.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [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 epidemiology and antimicrobial resistance of Gram-negative bacterial bloodstream infections in children, and to guide the choice of antimicrobials and the control of nosocomial infection. Method: Clinical data, bacteriology and antimicrobial susceptibility test results were collected retrospectively in hospitalized children who were diagnosed with gram-negative bacterial bloodstream infections in Yuying Children's Hospital of Wenzhou Medical University from January, 2010 to December, 2015. Result: A total of 399 cases (253 male and 146 female) were identified. The age ranged from 16 hours to 16 years (median age 10.1 months). The majority of cases were collected from division of neonatology (n=261, 65.4%), followed by 31 cases (7.8%) from pediatric intensive care unit and 29 cases (7.3%) from Gastroenterology Department; 275 cases (68.9%) had underlying diseases, mainly including preterm birth(n=172), neonatal respiratory distress syndrome(n=67) and newborn asphyxia(n=53). Eighty cases had received invasive procedures and 20 had surgical operation; 149 cases (37.3%) were community-acquired and 250 cases (62.7%) were hospital acquired. Fifty cases had complications, among those, 40 cases had septic shock, 32 cases had multiple organ dysfunction syndrome and 7 cases had disseminated intravascular coagulation; 288 cases were cured, 48 improved, 17 gave up treatment and discharged, and 46 died; totally 408 strains were isolated from 399 children, including Enterobacteriaceae (346, 84.8%), non-fermentative Gram-negative bacteria (49, 12.0%) and other gram-negative bacteria (13, 3.2%). The resistance rates of Escherichia coli (n=175) and Klebsiella pneumoniae (n=106) to carbapenems, β-lactams enzyme and its inhibitors, amikacin and cefoxitin were all lower than 10%. Totally 245 multi-drug resistant strains (60.1%) were isolated, including 225 strains of Enterobacteriaceae and 18 strains of non-fermentative Gram-negative bacteria (P<0.01) . Nine strains of Carbapenem-resistant Enterobacteriaceae were isolated, which were all sensitive to amikacin and the sensitive rates to fluoroquinolone reached 88.9%. Five strains which were detected sensitive to tigecycline were all sensitive. The proportion of Klebsiella sp in Gram-negative bacteria between 2013-2015 and 2010-2012 were 32.9% and 21.2%, respectively. The resistance rates of Escherichia coli and Klebsiella pneumoniae to β-lactams and its enzyme inhibitors and carbapenems had no significant change. Conclusion: Gram-negative bacterial bloodstream infections occur more frequently in newborns. Most children had combined underlying diseases. Escherichia coli and Klebsiella pneumoniae are the most common pathogens. β-Lactams and its enzyme inhibitors and carbapenems are the empirical choice of antimicrobial therapy for severe Enterobacteriaceae bloodstream bacterial infections.
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Affiliation(s)
- L Dong
- Department of Respiratory Diseases, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325027, China
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Shi RR, Li CC, Fang L, Xu J, Guan QB, Zhou XL, Guo J, Han WX, Chen Q, Feng L, Zhao JJ, Xu C. [Clinical and genetic characteristics of Gitelman syndrome in 5 pedigrees]. Zhonghua Nei Ke Za Zhi 2017; 56:104-111. [PMID: 28162179 DOI: 10.3760/cma.j.issn.0578-1426.2017.02.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the clinical and genetic characteristics of 5 pedigrees of Gitelman syndrome (GS), and summarize its advances in genetics, diagnosis and management. Methods: Five families with GS were identified and total genome DNA were extracted from the peripheral blood of all the family members. The exons and their flanking introns of SLC12A3 gene were amplified by PCR and screened for mutation using Autoassembler 2.0 software. Results: Six heterozygous SLC12A3 gene mutations were found in the five pedigrees, including two complex combination of deletion and insertion mutation (c.486-490delTACGGinsA and c. 965-1_969delgCGGACinsACCGAAA and c. 976-977delGT). These mutations were predicted to change the normal protein structure. Conclusion: These 6 SLC12A3 mutations are the major cause of the five pedigrees of GS.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - C Xu
- Department of Endocrinology, Shandong Provincial Hospital Affiliated to Shandong University, Shandong Clinical Medical Center of Endocrinology and Metabolism, Institute of Endocrinology and Metabolism, Shandong Academy of Clinical Medicine, Ji'nan 250000, China
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Li YH, Luo SQ, Lan L, Jin MG, Yang C, He JY, Li HB, Li CC, Cheng YB, Jin YL. [Influence of extreme weather on years of life lost due to diabetes death in Chongqing and Harbin, China]. Zhonghua Liu Xing Bing Xue Za Zhi 2017; 38:303-308. [PMID: 28329929 DOI: 10.3760/cma.j.issn.0254-6450.2017.03.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand the associations between extremely low and high air temperature and the years of life lost (YLL) due to diabetes deaths in Chongqing and Harbin with different climatic characteristics in China. Methods: A double threshold B-spline distributed lag non-linear model (DLNM) was used to investigate the lag and cumulative effects of extremely low and high air temperature on YLL due to diabetes for lag 0-30 days by using the urban meteorological and diabetes mortality data of Chongqing (2011-2013) and Harbin (2008-2010). The effects were expressed as relative risk (RR). Results: In Chongqing, the cold effects on YLL due to diabetes were delayed by four days and lasted for three days (lag4-6) with the highest RR of 1.304 (95%CI:1.033-1.647) at lag5. The hot effects were delayed by one day (lag1) with RR of 1.321 (95%CI:1.061-1.646). In Harbin, the extreme cold effects on YLL were delayed by four days and lasted for seven days (lag4-10) with the highest RR of 1.309 (95%CI: 1.088-1.575) at lag6. The hot effects were delayed by one day and lasted for four days (lag1-4) with the highest RR of 1.460 (95%CI:1.114-1.915) at lag2. The unit risk for cold and hot effects was 43.7% (P=0.005 5) and 18.0% (P=0.000 2) in Chongqing and 15.0% (P=0.000 8) and 29.5% (P=0.001 2) in Harbin, respectively. Conclusions: Both extremely low air temperature and extremely high air temperature might increase the years of life lost due to diabetes in cities with different climate characteristics. Health education about diabetes prevention should provide information about the effects of extreme weather events.
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Affiliation(s)
- Y H Li
- Division of Policy, Regulation and Standard, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - S Q Luo
- Public Health and Safety Monitoring Department, Chongqing Municipal Center for Disease Control and Prevention, Chongqing 404000, China
| | - L Lan
- Division of Chronic Disease Control and Prevention, Harbin Municipal Center for Disease Control and Prevention, Harbin 150056, China
| | - M G Jin
- Qijiang District Center for Disease Control and Prevention of Chongqing, Chongqing 401420, China
| | - C Yang
- Harbin Municipal Center for Disease Control and Prevention, Harbin 150056, China
| | - J Y He
- Public Health and Safety Monitoring Department, Chongqing Municipal Center for Disease Control and Prevention, Chongqing 404000, China
| | - H B Li
- Public Health and Monitoring Center, Harbin Municipal Center for Disease Control and Prevention, Harbin 150056, China
| | - C C Li
- Environmental Epidemiology Department, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Y B Cheng
- Division of Policy, Regulation and Standard, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
| | - Y L Jin
- Division of Policy, Regulation and Standard, National Institute of Environmental Health, Chinese Center for Disease Control and Prevention, Beijing 100021, China
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Abstract
The complete chloroplast genome (cpDNA) sequences of two cultivated species of Morus L. (Morus atropurpurea and Morus multicaulis) are reported and reconstructed in this study, and were compared with that of wild Morus mongolica. In M. atropurpurea, the circular genome is 159,113 bp in size and comprises two identical inverted repeat (IR) regions of 25,707 bp each, separated by a large single-copy (LSC) region of 87,824 bp and a small single-copy (SSC) region of 19,875 bp. The cpDNA sequence of M. multicaulis is longer than that of M. atropurpurea (159,154 bp), and consists of two IRs (25,678 bp), a LSC region (87,763 bp), and a SSC region (20,035 bp). Each cpDNA contains 112 unique genes including 78 protein-coding genes, 30 transfer RNA genes, and 4 ribosomal RNA genes, with a GC content of 36.2%. There were 83 simple sequence repeats (SSRs) with mononucleotides being the most common (60) and di-, tri-, tetra-, and hexanucleotides appearing less frequently in M. atropurpurea. M. multicaulis contains 81 SSRs containing 63 mononucleotide repeats. The genes and SSRs identified in this study may enhance understanding of cpDNA evolution at both intra- and interspecific levels. MEGA 6.0 was used to construct a phylogenetic tree of 27 species, which revealed that M. atropurpurea and M. multicaulis are more related to their congeners than to others. The cpDNA of M. atropurpurea and M. multicaulis and its structural analysis are important for the chloroplast genome project, development of molecular markers for Morus species, and breeding of varieties.
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Affiliation(s)
- Q L Li
- College of Forestry, Northwest A&F University, Yangling, China
| | - J Z Guo
- College of Forestry, Northwest A&F University, Yangling, China
| | - N Yan
- College of Forestry, Northwest A&F University, Yangling, China
| | - C C Li
- College of Forestry, Northwest A&F University, Yangling, China
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Huo X, Chen LL, Hong L, Xiang LH, Tang FY, Chen SH, Gao Q, Chen C, Dai QG, Sun CW, Xu K, Dai WJ, Qi X, Li CC, Yu HY, Zhou Y, Huang HD, Pan XY, Xu CS, Zhou MH, Bao CJ. Economic burden and its associated factors of hospitalized patients infected with A (H7N9) virus: a retrospective study in Eastern China, 2013-2014. Infect Dis Poverty 2016; 5:79. [PMID: 27580946 PMCID: PMC5007809 DOI: 10.1186/s40249-016-0170-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 07/11/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND H7N9 continues to cause human infections and remains a pandemic concern. Understanding the economic impacts of this novel disease is important for making decisions on health resource allocation, including infectious disease prevention and control investment. However, there are limited data on such impacts. METHODS Hospitalized laboratory-confirmed H7N9 patients or their families in Jiangsu Province of China were interviewed. Patients' direct medical costs of hospitalization were derived from their hospital bills. A generalized linear model was employed to estimate the mean direct medical costs of patients with different characteristics. RESULTS The mean direct cost of hospitalization for H7N9 was estimated to be ¥ 71 060 (95 % CI, 48 180-104 820), i.e., US$ 10 996 (95 % CI, 7 455-16 220), and was ¥12 060 (US$ 1 861), ¥136 120 (US$ 21 001) and ¥218 610 (US$ 33 728) for those who had mild or severe symptoms or who died, respectively. The principal components of the total fees differed among patients with different disease severity, although medication fees were always the largest contributors. Disease severity, proportion of reimbursement and family member monthly average income were identified as the key factors that contributed to a patient's direct medical cost of hospitalization. CONCLUSIONS The direct medical costs of hospitalized patients with H7N9 are significant, and far surpass the annual per capita income of Jiangsu Province, China. The influencing factors identified should be taken into account when developing related health insurance policies and making health resource allocation. TRIAL REGISTRATION Not applicable. This is a survey study with no health care intervention implemented on human participants.
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Affiliation(s)
- Xiang Huo
- Department of Acute Infectious Disease, Jiangsu Provincial Center for Disease Control and Prevention, 172 Jiang-su Rd, Nanjing, 210009, China
| | - Li-Ling Chen
- Suzhou Center for Disease Prevention and Control, Suzhou, China
| | - Lei Hong
- Nanjing Municipal Center for Disease Control and Prevention, Nanjing, China
| | - Lun-Hui Xiang
- Baoshan District Center for Disease Control and Prevention, Shanghai, China
| | - Fen-Yang Tang
- Department of Acute Infectious Disease, Jiangsu Provincial Center for Disease Control and Prevention, 172 Jiang-su Rd, Nanjing, 210009, China
| | - Shan-Hui Chen
- Wuxi Center for Disease Control and Prevention, Wuxi, China
| | - Qiang Gao
- Huaian Center for Disease Control and Prevention, Huaian, China
| | - Cong Chen
- Changzhou Center for Disease Control and Prevention, Changzhou, China
| | - Qi-Gang Dai
- Department of Acute Infectious Disease, Jiangsu Provincial Center for Disease Control and Prevention, 172 Jiang-su Rd, Nanjing, 210009, China
| | - Chuan-Wu Sun
- Xuzhou Center for Disease Control and Prevention, Xuzhou, China
| | - Ke Xu
- Department of Acute Infectious Disease, Jiangsu Provincial Center for Disease Control and Prevention, 172 Jiang-su Rd, Nanjing, 210009, China
| | - Wen-Jun Dai
- Taizhou Center for Disease Control and Prevention, Taizhou, China
| | - Xian Qi
- Department of Acute Infectious Disease, Jiangsu Provincial Center for Disease Control and Prevention, 172 Jiang-su Rd, Nanjing, 210009, China
| | - Chang-Cheng Li
- Yancheng Center for Disease Control and Prevention, Yancheng, China
| | - Hui-Yan Yu
- Department of Acute Infectious Disease, Jiangsu Provincial Center for Disease Control and Prevention, 172 Jiang-su Rd, Nanjing, 210009, China
| | - Yin Zhou
- Zhenjiang Center for Disease Prevention and Control, Zhenjiang, China
| | - Hao-Di Huang
- Department of Acute Infectious Disease, Jiangsu Provincial Center for Disease Control and Prevention, 172 Jiang-su Rd, Nanjing, 210009, China
| | - Xing-Yang Pan
- Yangzhou Center for Disease Control and Prevention, Yangzhou, China
| | - Chang-Sha Xu
- Suqian Municipal Center for Disease Control and Prevention, Suqian, China
| | - Ming-Hao Zhou
- Department of Acute Infectious Disease, Jiangsu Provincial Center for Disease Control and Prevention, 172 Jiang-su Rd, Nanjing, 210009, China
| | - Chang-Jun Bao
- Department of Acute Infectious Disease, Jiangsu Provincial Center for Disease Control and Prevention, 172 Jiang-su Rd, Nanjing, 210009, China.
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Wu G, Li CC, Jiang XH, Yu LM. Highly efficient antifouling property based on self-generating hydrogel layer of polyacrylamide coatings. J Appl Polym Sci 2016. [DOI: 10.1002/app.44111] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Gang Wu
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education; Ocean University of China; Qingdao 266100 People's Republic of China
| | - Chang-Cheng Li
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education; Ocean University of China; Qingdao 266100 People's Republic of China
| | - Xiao-Hui Jiang
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education; Ocean University of China; Qingdao 266100 People's Republic of China
| | - Liang-Min Yu
- Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education; Ocean University of China; Qingdao 266100 People's Republic of China
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Wang J, Li CC, Diao YX, Sun XY, Hao DM, Liu X, Ge PP. Different outcomes of infection of chickens and ducks with a duck-origin H9N2 influenza A virus. Acta Virol 2014; 58:223-30. [PMID: 25283856 DOI: 10.4149/av_2014_03_223] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
As the major aquatic and terrestrial hosts for avian influenza viruses (AIVs), ducks and chickens play a critical role in the evolution and spread of the H9N2 virus. However, the outcomes of infection of ducks and chickens with the H9N2 virus are not sufficiently documented. In this study, we compared the outcomes of infection of chickens and Peking ducks with a duck-origin H9N2 virus. The results showed that this virus caused more pronounced clinical signs and histological lesions in chickens. As for the virus shedding, chickens shed more virus in the trachea and less virus in the cloaca in levels of interferon (IFN) γ were found in the trachea of ducks compared with chickens, while comparison with ducks. As for cytokines, namely IFNs and interleukins (IL), higher higher levels of IFN-β, IFN-γ, IL-1β, and IL-6 were observed in the ileum of chickens compared with ducks. Eventually, serum hemagglutination-inhibition (HI) antibody titers were higher in chickens than in ducks. Taken together, ducks and chickens use different strategies in response to the H9N2 virus infection in tissues representing main replication sites of low-pathogenic AIVs. Given the different outcomes of the H9N2 virus infection in ducks and chickens, different measures should be taken in vaccination and treatment.
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Vermeersch SGG, de Hoon J, De Saint-Hubert B, Derdelinckx I, Serdons K, Bormans G, Reynders T, Declercq R, De Lepeleire I, Kennedy W, Blanchard R, Marcantonio E, Hargreaves R, Li CC, Sanabria S, Hostetler E, Joshi A, Evelhoch J, Van Laere K. PET imaging in healthy subjects and migraineurs suggests CGRP receptor antagonists do not have to act centrally to achieve clinical efficacy. J Headache Pain 2013. [DOI: 10.1186/1129-2377-14-s1-p224] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Vermeersch SGG, de Hoon J, De Saint-Hubert B, Derdelinckx I, Serdons K, Bormans G, Reynders T, Declercq R, De Lepeleire I, Kennedy W, Blanchard R, Marcantonio E, Hargreaves R, Li CC, Sanabria S, Hostetler E, Joshi A, Evelhoch J, Van Laere K. PET imaging in healthy subjects and migraineurs suggests CGRP receptor antagonists do not have to act centrally to achieve clinical efficacy. J Headache Pain 2013. [PMCID: PMC3620296 DOI: 10.1186/1129-2377-1-s14-p224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Affiliation(s)
- SGG Vermeersch
- Center for Clinical Pharmacology, Campus Gasthuisberg, University Hospitals Leuven (KU Leuven), Leuv, Belgium
| | - J de Hoon
- Center for Clinical Pharmacology, Campus Gasthuisberg, University Hospitals Leuven (KU Leuven), Leuv, Belgium
| | - B De Saint-Hubert
- Center for Clinical Pharmacology, Campus Gasthuisberg, University Hospitals Leuven (KU Leuven), Leuv, Belgium
| | - I Derdelinckx
- Center for Clinical Pharmacology, Campus Gasthuisberg, University Hospitals Leuven (KU Leuven), Leuv, Belgium
| | - K Serdons
- Nuclear Medicine Department, UZ and KU Leuven, Belgium
| | - G Bormans
- Laboratory for Radiopharmacy, KU Leuven, Belgium
| | - T Reynders
- Merck Sharp & Dohme (Europe) Inc., Brussels, Belgium
| | - R Declercq
- Merck Sharp & Dohme (Europe) Inc., Brussels, Belgium
| | | | - W Kennedy
- Merck Research Laboratories, Upper Gwynedd PA, USA
| | - R Blanchard
- Merck Research Laboratories, Upper Gwynedd PA, USA
| | | | | | - CC Li
- Merck Research Laboratories, West Point PA, USA
| | - S Sanabria
- Merck Research Laboratories, West Point PA, USA
| | - E Hostetler
- Merck Research Laboratories, West Point PA, USA
| | - A Joshi
- Merck Research Laboratories, West Point PA, USA
| | - J Evelhoch
- Merck Research Laboratories, West Point PA, USA
| | - K Van Laere
- Nuclear Medicine Department, UZ and KU Leuven, Belgium
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43
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Vermeersch SGG, de Hoon J, De Saint-Hubert B, Derdelinckx I, Serdons K, Bormans G, Reynders T, Declercq R, De Lepeleire I, Kennedy W, Blanchard R, Marcantonio E, Hargreaves R, Li CC, Sanabria S, Hostetler E, Joshi A, Evelhoch J, Van Laere K. PET imaging in healthy subjects and migraineurs suggests CGRP receptor antagonists do not have to act centrally to achieve clinical efficacy. J Headache Pain 2013. [DOI: 10.1186/1129-2377-1-s1-p224] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Huang Y, Kang M, Li H, Li JY, Zhang JY, Liu LH, Liu XT, Zhao Y, Wang Q, Li CC, Lee H. Combined performance of physical examination, mammography, and ultrasonography for breast cancer screening among Chinese women: a follow-up study. ACTA ACUST UNITED AC 2012; 19:eS22-30. [PMID: 22876165 DOI: 10.3747/co.19.1137] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE We aimed to determine which combination of physical examination (pe), mammography (mam), and ultrasonography (us) would optimize breast cancer detection in China. METHODS We conducted a trial of screening with pe, mam, and us among Chinese women 25 years of age and older. All initial screenings using the three modalities were completed within 30 days of each other, and subjects were followed approximately 1 year later. The performances of the three screening methods used alone, in parallel, or in series were compared. Data were analyzed using exact confidence intervals (cis) and the McNemar test. RESULTS Between March 2009 and July 2011, 3028 eligible women completed all study examinations. At a mean follow-up of 1.3 years, 33 breast cancers were identified in the study population. Mammography detected 28 cancers; us, 24 cancers; and pe, 22 cancers. During the follow-up period, 2 false-negative cases occurred clinically. The highest sensitivity for breast cancer screening (93.9%) was achieved by paralleling mam with us, but came at the cost of a higher recall rate (12.15%). Using us alone at the first stage, followed by mam when indicated, offered high specificity (99.4%) and the lowest recall rate (1.82%), which were not reached at the expense of sensitivity (84.8%). Used in series, us and mam achieved a sensitivity similar to that for the same modalities used in parallel (McNemar p > 0.05). CONCLUSIONS Taking limited health resources into consideration, the strategy of screening with us alone at the first stage, followed by mam when indicated, may optimize breast cancer detection in most regions of China.
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Affiliation(s)
- Y Huang
- Department of Epidemiology, West China School of Public Health, Sichuan University, Chengdu, Sichuan, PR China
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Liu XL, Li CC, Liu KJ, Cui CY, Zhang YZ, Liu Y. The influence of fluoride on the expression of inhibitors of Wnt/β-catenin signaling pathway in rat skin fibroblast Cells. Biol Trace Elem Res 2012; 148:117-21. [PMID: 22290293 DOI: 10.1007/s12011-012-9333-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [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: 11/30/2011] [Accepted: 01/11/2012] [Indexed: 11/25/2022]
Abstract
The effective therapy of fluoride-induced bone diseases requires an understanding of the mechanism of the disorders. Changes in the inhibitors of the Wnt/β-catenin pathway, Dickkopf-1 (Dkk-1) and Sclerostin (SOST),were studied in supernatants harvested from rat skin fibroblasts cultured with varied doses of fluoride. The contents of SOST and Dkk-1 in fibroblast supernatants were assessed at four exposure time-points and investigated by using the method of ELISA. Compared to the relevant controls(0 mg F(−)/L), a significant decrease of the concentrations of SOST and Dkk-1 was observed as the fluoride concentration increased. Compared to the relevant time controls (24 h), a significant decrease of the concentrations of SOST and Dkk-1 was observed with the extension of time. Our results suggest that the Wnt/β-catenin pathway inhibitors Dkk-1 and SOST play an important role in skeletal fluorosis. They can be used as important indications for diagnosing bone metabolism changes caused by fluoride exposure and therapeutic targets in diseases resulting from fluoride exposure.
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Affiliation(s)
- Xiao-Li Liu
- Department of Occupational and Environmental Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Hubei Wuhan 430030, People’s Republic of China
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Chen LB, Yin XM, Mei L, Li CC, Lei DN, Zhang M, Li QH, Xu Z, Xu CM, Wang TH. Mesoporous SnO2@carbon core-shell nanostructures with superior electrochemical performance for lithium ion batteries. Nanotechnology 2012; 23:035402. [PMID: 22173372 DOI: 10.1088/0957-4484/23/3/035402] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
SnO2@carbon nanostructure composites are prepared by a simple hydrothermal method. The composite exhibits unique structure, which consists of a mesoporous SnO2 core assembled of very small nanoparticles and a carbon shell with 10 nm thickness. The mesoporous SnO2@carbon core-shell nanostructures manifest superior electrochemical performance as an anode material for lithium ion batteries. The reversible specific capacity of the composite is about 908 mAh g(-1) for the first cycle and it can retain about 680 mAh g(-1) after 40 charge/discharge cycles at a current density of 0.3 C. Moreover, it shows excellent rate capability even at the high rate of 4.5 C. The enhanced performance was attributed to the mesoporous structure and a suitable carbon coating.
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Affiliation(s)
- L B Chen
- Key Laboratory for Micro-Nano Optoelectronic Devices of Ministry of Education and State Key Laboratory for Chemo/Biosensing and Chemometrics, Hunan University, Changsha, Hunan 410082, People's Republic of China
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Pfeffer G, Côté HCF, Montaner JS, Li CC, Jitratkosol M, Mezei MM. Ophthalmoplegia and ptosis: mitochondrial toxicity in patients receiving HIV therapy. Neurology 2009; 73:71-2. [PMID: 19564587 DOI: 10.1212/wnl.0b013e3181aae814] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- G Pfeffer
- Division of Neurology and Department of Pathology & Laboratory Medicine, University of British Columbia, Vancouver, BC, Canada
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Chen KC, Li CC, Lin CH, Guo GH. Clustering and phases of compartmentalized granular gases. Phys Rev E Stat Nonlin Soft Matter Phys 2009; 79:021307. [PMID: 19391739 DOI: 10.1103/physreve.79.021307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2008] [Revised: 01/26/2009] [Indexed: 05/27/2023]
Abstract
This paper experimentally investigates the clustering conditions for compartmentalized monodisperse granular gases, determining the critical particle number and condensation granular temperature at the gas-clustering transition. When one heavier intruding particle is added to a monodisperse gas, it is found that the condensation temperature decreases with the ratio of the mass of the intruding particle to that of the background particle. This phenomenon can be mathematically characterized by a proposed linear relation, which is reminiscent of a relation between the freezing point depression for a solvent and the concentration of an added solute. Finally we perform various tests by changing the numbers of two types of particles in bidisperse granular mixtures to construct the phase diagrams, which present the range of the five different states, namely, homogeneous gas, unstable-gas, one-clustering, two-clustering, and granular oscillation states.
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Affiliation(s)
- K C Chen
- Institute of Applied Mechanics, National Taiwan University, Taipei 106, Taiwan, Republic of China
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Li CC, Chen CY, Chen CJ. Computed tomographic diagnosis of midgut volvulus in an adult. Acta Clin Belg 2009; 64:68-9. [PMID: 19317245 DOI: 10.1179/acb.2009.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Affiliation(s)
- C C Li
- Division of General Surgery, Department of Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, Republic of China.
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He XP, Xu XW, Zhao SH, Fan B, Yu M, Zhu MJ, Li CC, Peng ZZ, Liu B. Investigation of Lpin1 as a candidate gene for fat deposition in pigs. Mol Biol Rep 2008; 36:1175-80. [PMID: 18581256 DOI: 10.1007/s11033-008-9294-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2008] [Accepted: 06/11/2008] [Indexed: 10/21/2022]
Abstract
Lpin1 deficiency prevents normal adipose tissue development and remarkably reduces adipose tissue mass, while overexpression of the Lpin1 gene in either skeletal muscle or adipose tissue promotes adiposity in mice. However, little is known about the porcine Lpin1 gene. In the present study, a 5,559-bp cDNA sequence of the porcine Lpin1 gene was obtained by RT-PCR and 3'RACE. The sequence consisted of a 111-bp 5'UTR, a 2,685-bp open reading frame encoding a protein of 894 amino acids and a 2,763-bp 3'UTR. Semi-quantitative RT-PCR analysis revealed that Lpin1 had a high level of expression in the liver, spleen, skeletal muscle and fat, a low level of expression in the heart, lung and kidney. The porcine Lpin1 gene was assigned to 3q21-27 by using the somatic cell hybrid panel (SCHP) and the radiation hybrid (IMpRH) panel. One C93T single nucleotide polymorphism (SNP) was identified and genotyped using the TaqI PCR-RFLP method. Association analysis between the genotypes and fat deposition traits suggested that different genotypes of the Lpin1 gene were associated with percentage of leaf fat and intramuscular fat.
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Affiliation(s)
- X P He
- Laboratory of Molecular Biology and Animal Breeding, Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education, Huazhong Agricultural University, Wuhan, People's Republic of China
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