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Wang Z, Liu J, Yao M, He M, Shang W, Dong X. Indoor air quality and sick-building syndrome at a metro station in Tianjin, China. Environ Int 2024; 187:108673. [PMID: 38663235 DOI: 10.1016/j.envint.2024.108673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 04/03/2024] [Accepted: 04/16/2024] [Indexed: 05/19/2024]
Abstract
Metro systems play a crucial role in public transportation worldwide. Given that metro stations are unique built environments with a significant volume of daily commuters, ensuring a satisfactory air quality in these spaces becomes paramount. This study involved measurements of indoor air quality (IAQ), staff satisfaction, particulate matter (PM) chemical composition, and heavy metal health risks at a typical metro station in Tianjin over two seasons. Although the air exchange rate was sufficient to maintain a CO2 concentration less than 1000 ppm, the proportion of staff reporting no sick-building symptoms decreased from 83 % in spring to 25 % in winter. An average mass concentration of PM with an aerodynamic diameter smaller than 2.5 μm (PM2.5) of 68.0 ± 42.2 μg/m3 and an average PM1 mass concentration of 51.8 ± 33.3 μg/m3 were observed on the platform in winter. PM2.5 contained more metal in winter than in spring. PM2.5 in winter contained more metal in winter than in spring. With a lower relative humidity in winter, the coefficient of friction between railway wheels and rails increased, thus increasing particle emission. The carcinogenic risk of Cr on the platform was unacceptable. Moreover, the health risks induced by Ba should be investigated. The findings indicate that PM control at metro stationss, particularly on platforms in winter, should be emphasized.
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Affiliation(s)
- Zukun Wang
- Tianjin Key Laboratory of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University, Tianjin, China
| | - Junjie Liu
- Tianjin Key Laboratory of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University, Tianjin, China
| | - Mingyao Yao
- Tianjin Key Laboratory of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University, Tianjin, China.
| | - Mingtong He
- Tianjin Key Laboratory of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University, Tianjin, China
| | - Wenzhe Shang
- Tianjin Key Laboratory of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University, Tianjin, China
| | - Xinyue Dong
- Tianjin Key Laboratory of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University, Tianjin, China
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2
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Zhang N, Li Y, Shang W, Song X, Liu W, Hao C. Role of excited-state hydrogen bonding in CO 2 photoreduction catalyzed by sodium magnesium chlorophyll. Phys Chem Chem Phys 2023; 25:32158-32165. [PMID: 37986583 DOI: 10.1039/d3cp03638c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
In this paper, we report a joint experimental and computational study to elaborate the mechanism for the photocatalytic CO2 reduction reaction (CO2RR). Experimental results indicate that the catalyst (sodium magnesium chlorophyll, MgChlNa2), which has a well-defined structure for calculation and understanding, can achieve the photoreduction of CO2 to CO only using water as a dispersant, without adding any photosensitizer or sacrificial agent. Subsequently, a series of structural models of the hydrogen-bonded complexes of the catalyst were constructed and outlined via utilizing density functional theory (DFT) calculations, including photophysical and photochemical processes. The results confirm that the rate-limiting step of the whole CO2RR was the intersystem crossing process. The electron and proton transfers involved in photophysical and photochemical processes are induced by hydrogen bonds in the excited states. The combination of experiments and calculations will provide an important reference for the design of high-efficiency photocatalysts in the photocatalytic CO2RR.
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Affiliation(s)
- Naitian Zhang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China.
| | - Yuehui Li
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China.
| | - Wenzhe Shang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China.
| | - Xuedan Song
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China.
| | - Wei Liu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China.
| | - Ce Hao
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China.
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3
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Li X, Shang W, Li SQ, Zhao ZM, Zheng YM, Guan L. [Analysis on the quality control of suspected occupational disease from the characteristics of applicants diagnosed with noise deafness]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2023; 41:844-848. [PMID: 38073213 DOI: 10.3760/cma.j.cn121094-20220914-00454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
Objective: To analyze the audiology and occupational health data of applicants diagnosed of occupational noise deafness, and to explore the influencing factors in the diagnosis of suspected occupational noise deafness. Methods: In May 2022, the information of patients diagnosed with occupational noise deafness in Peking University Third Hospital from January 2018 to December 2021 was collected, and the occupational health data of their working environment, clinical audiological examination results and diagnosis basis of occupational noise deafness were collected and analyzed. Multi-factor unconditional logistic regression analysis was used to analyze independent risk factors for the diagnosis of occupational noise deafness. Results: A total of 129 subjects were included, all of which were suspected cases of occupational noise deafness found in various occupational health examination institutions. Eight cases (6.20%) were diagnosed as occupational noise deafness, and 121 cases (93.80%) were non-occupational noise deafness. After hearing examination, only 27.27% (24/88) of the patients' audiological changes were consistent with the starting point of occupational noise deafness diagnosis. Further analysis of the noise intensity in the workplace showed that 16 patients were identified as non-occupational noise deafness because the noise intensity of the working environment was less than 85 dB. Logistic regression analysis showed that the working hours were more than 8 hours (OR=9.274, 95%CI: 1.388-61.950, P=0.022) and the noise intensity of the working environment (OR=1.189, 95%CI: 1.059-1.334, P=0.003) were independent risk factors for the diagnosis of occupational noise deafness. Conclusion: The exclusion rate of suspected occupational noise deafness found in occupational health examination is higher after adequate rest. The test results of working environment noise intensity provided by the employer can help to determine occupational noise deafness.
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Affiliation(s)
- X Li
- Department of Occupational Disease, Peking University Third Hospital, Beijing Occupational Health Inspection Quality Control and Improvement Center, Beijing 100191, China
| | - W Shang
- Department of Occupational Disease, Nuclear Industry 417 Hospital, Xi'an 710600, China
| | - S Q Li
- Department of Occupational Disease, Peking University Third Hospital, Beijing Occupational Health Inspection Quality Control and Improvement Center, Beijing 100191, China
| | - Z M Zhao
- Department of Occupational Disease, Peking University Third Hospital, Beijing Occupational Health Inspection Quality Control and Improvement Center, Beijing 100191, China
| | - Y M Zheng
- Department of Occupational Disease, Peking University Third Hospital, Beijing Occupational Health Inspection Quality Control and Improvement Center, Beijing 100191, China
| | - L Guan
- Department of Occupational Disease, Peking University Third Hospital, Beijing Occupational Health Inspection Quality Control and Improvement Center, Beijing 100191, China
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Dai X, Shang W, Liu J, Xue M, Wang C. Achieving better indoor air quality with IoT systems for future buildings: Opportunities and challenges. Sci Total Environ 2023; 895:164858. [PMID: 37343873 DOI: 10.1016/j.scitotenv.2023.164858] [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] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 05/26/2023] [Accepted: 06/11/2023] [Indexed: 06/23/2023]
Abstract
With the development of IoT technology and low-cost indoor air quality (IAQ) sensors, the IoT-based IAQ monitoring platform has garnered significant research interest and demonstrated its potential in enhancing IAQ management. This study presents a comprehensive review of previous research on the development and application of IoT-based IAQ platforms in different built environments. It offers detailed insights into the design and implementation of recent IoT-based IAQ platforms. The findings indicate that the IoT-based IAQ platforms are able to provide reliable information for IAQ monitoring. To ensure quality control of the IoT-based IAQ platform, it is suggested to replace the sensors every 4-6 months for reliable monitoring. In another aspect, integrating data-driven technology into the platform is crucial for IAQ prediction and efficient control of ventilation systems, leveraging the wealth of data available from the IoT platform. According to recent studies that applied data-driven algorithms for IAQ management, it can be confirmed that the data-driven algorithms are able to prompt IAQ by providing either more information or a control strategy. However, it should be noted that only 9.1 % of the developed platforms integrated data-driven models for IAQ management. Based on our findings, current challenges and further opportunities are discussed. Future studies should focus on integrating data-driven algorithms into IoT-based IAQ platforms and developing digital twins that can be used for real building IAQ management. However, there is obvious tension between controlling ventilation for energy efficiency versus better air quality. It is important to make a balance between energy efficiency and better air quality according to the current situations of specific built environments. Also, the next generation of IoT-based IAQ platforms should include occupants in the loop to create a more occupant-centric IAQ management approach.
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Affiliation(s)
- Xilei Dai
- Department of the Built Environment, College of Design and Engineering, National University of Singapore, 4 Architecture Drive, Singapore 117566, Singapore
| | - Wenzhe Shang
- Tianjin Key Lab of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Junjie Liu
- Tianjin Key Lab of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China.
| | - Min Xue
- Tianjin Key Lab of Indoor Air Environmental Quality Control, School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China
| | - Congcong Wang
- School of Environment and Energy Engineering, Beijing University of Civil Engineering and Architecture, Beijing 100044, China
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Hu J, Shang W, Xin C, Guo J, Cheng X, Zhang S, Song S, Liu W, Ju F, Hou J, Shi Y. Uncovering Dynamic Edge-Sites in Atomic Co-N-C Electrocatalyst for Selective Hydrogen Peroxide Production. Angew Chem Int Ed Engl 2023:e202304754. [PMID: 37126395 DOI: 10.1002/anie.202304754] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [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: 04/04/2023] [Revised: 04/28/2023] [Accepted: 04/28/2023] [Indexed: 05/02/2023]
Abstract
Understanding of the nature of single-atom catalytic sites and identification of their spectroscopic fingerprints are essential prerequisites for the rational design of target catalysts. Here, we apply correlated in situ X-ray absorption and infrared spectroscopy to probe the edge-site-specific chemistry of Co-N-C electrocatalyst during the oxygen reduction reaction (ORR) operation. The unique edge-hosted architecture affords single-atom Co site remarkable structural flexibility with adapted dynamic oxo adsorption and valence state shuttling between Co(2-δ)+ and Co2+, in contrast to the rigid in-plane embedded Co1-Nx counterpart. Theoretical calculations demonstrate that the synergistic interplay of in-situ reconstructed Co1-N2-oxo with peripheral oxygen groups gives rise to a near-optimal adsorption of *OOH intermediate and substantially increases the activation barrier for its dissociation, accounting for a robust acidic ORR activity and 2e- selectivity for H2O2 production.
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Affiliation(s)
- Jinwen Hu
- Dalian University of Technology, Department of Chemistry, CHINA
| | - Wenzhe Shang
- Dalian University of Technology, Department of Chemistry, CHINA
| | - Cuncun Xin
- Dalian University of Technology, Department of Chemistry, CHINA
| | - Jingya Guo
- Dalian University of Technology, Department of Chemistry, CHINA
| | - Xusheng Cheng
- Dalian University of Technology, Department of Chemistry, CHINA
| | - Songlin Zhang
- Dalian University of Technology, Department of Chemistry, CHINA
| | - Suchan Song
- Dalian University of Technology, Department of Chemistry, CHINA
| | - Wei Liu
- Dalian University of Technology, Department of Chemistry, CHINA
| | - Feng Ju
- East China University of Science and Technology, Department of Chemistry, CHINA
| | - Jungang Hou
- Dalian University of Technology, Department of Chemistry, CHINA
| | - Yantao Shi
- Dalian University of Technology, State Key Laboratory of Fine Chemicals, Linggong, 116024, Dalian, CHINA
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6
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Wang M, Zhang Z, Zhang S, Liu W, Shang W, Su X, Liang Y, Wang F, Ma X, Liu Y, Li Y. Non‐planar Nest‐like [Fe2S2] Cluster Sites for Efficient Oxygen Reduction Catalysis. Angew Chem Int Ed Engl 2023. [DOI: 10.1002/ange.202300826] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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Wang M, Zhang Z, Zhang S, Liu W, Shang W, Su X, Liang Y, Wang F, Ma X, Liu Y, Li Y. Non-planar Nest-like [Fe2S2] Cluster Sites for Efficient Oxygen Reduction Catalysis. Angew Chem Int Ed Engl 2023; 62:e202300826. [PMID: 36988088 DOI: 10.1002/anie.202300826] [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: 01/16/2023] [Revised: 03/17/2023] [Accepted: 03/28/2023] [Indexed: 03/30/2023]
Abstract
Metal-nitrogen-carbon catalysts, as promising alternative to platinum-based catalysts for oxygen reduction reaction (ORR), are still highly expected to achieve better performance by modulating the composition and spatial structure of active site. Herein, we constructed the non-planar nest-like [Fe2S2] cluster sites in N-doped carbon plane. Adjacent double Fe atoms effectively weaken the O-O bond by forming a peroxide bridge-like adsorption configuration, and the introduction of S atoms breaks the planar coordination of Fe resulting in greater structural deformation tension, lower spin state, and downward shifted Fe d-band center, which together facilitate the release of OH* intermediate. Hence, the non-planar [Fe2S2] cluster catalyst, with a half-wave potential of 0.92 V, displays superior ORR activity than that of planar [FeN4] or [Fe2N6]. This work provides insights into the co-regulation of atomic composition and spatial configuration for efficient oxygen reduction catalysis.
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Affiliation(s)
- Ming Wang
- Dalian University of Technology, Zhang Dayu School of Chemistry, CHINA
| | - Zhong Zhang
- Dalian University of Technology, Zhang Dayu School of Chemistry, CHINA
| | - Songlin Zhang
- Dalian University of Technology, School of Chemical Engineering, CHINA
| | - Wei Liu
- Dalian University of Technology, School of Chemical Engineering, CHINA
| | - Wenzhe Shang
- Dalian University of Technology, School of Chemical Engineering, CHINA
| | - Xiaofang Su
- Henan Normal University, School of Chemistry and Chemical Engineering, CHINA
| | - Yan Liang
- Dalian University of Technology, Zhang Dayu School of Chemistry, CHINA
| | - Furi Wang
- Dalian University of Technology, Zhang Dayu School of Chemistry, CHINA
| | - Xujiao Ma
- Dalian University of Technology, Zhang Dayu School of Chemistry, CHINA
| | - Yiwei Liu
- Dalian University of Technology, Zhang Dayu School of Chemistry, dalian, liaoning, China, Dalian, CHINA
| | - Yadong Li
- Tsinghua University, Department of Chemistry, CHINA
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8
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Wang P, Liu J, Shang W, Xu T, Wang M, Shi Y, Cai R, Bian J. Rational Selection of the Lewis Base Molecules Targeted for Lead-Based Defects of Perovskite Solar Cells: The Synergetic Co-passivation of Carbonyl and Carboxyl Groups. J Phys Chem Lett 2023; 14:653-662. [PMID: 36637234 DOI: 10.1021/acs.jpclett.2c03750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Defect passivation through Lewis acid-base chemistry has recently attracted significant interest because of its proven ability to improve the power conversion efficiency (PCE) and stability of perovskite solar cells (PSCs). However, tedious trial-and-error procedures are commonly used for the selection of Lewis molecules due to their abundant variety. Herein, two typical Lewis base molecules, the M molecule containing only carbonyl groups and the 3M molecule containing both carbonyl and carboxyl groups, are proposed to passivate the Pb-based defects and mitigate their negative impacts on PSC performance. The results indicated that much stronger coordination bonds can be formed between the 3M molecule and uncoordinated Pb2+ than with the M molecule. Because of the benefit from the synergetic co-passivation effect of carbonyl and carboxyl groups, an impressive maximum PCE of 24.07% was achieved via 3M modification. More importantly, the modified devices demonstrated remarkably improved operational stability.
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Affiliation(s)
- Pengfei Wang
- Key Laboratory of Materials Modification by Laser, Ion, and Electron Beams (Ministry of Education), School of Physics, Dalian University of Technology, Dalian116024, China
| | - Jing Liu
- Key Laboratory of Materials Modification by Laser, Ion, and Electron Beams (Ministry of Education), School of Physics, Dalian University of Technology, Dalian116024, China
| | - Wenzhe Shang
- State Key Laboratory of Fine Chemicals, School of Chemistry, Dalian University of Technology, Dalian116024, China
| | - Ting Xu
- Marine Engineering College, Dalian Maritime University, 1 Linghai Road, Dalian, Liaoning116026, China
| | - Minhuan Wang
- Key Laboratory of Materials Modification by Laser, Ion, and Electron Beams (Ministry of Education), School of Physics, Dalian University of Technology, Dalian116024, China
| | - Yantao Shi
- State Key Laboratory of Fine Chemicals, School of Chemistry, Dalian University of Technology, Dalian116024, China
| | - Rui Cai
- Instrumental Analysis Center, Dalian University of Technology, Dalian116024, China
| | - Jiming Bian
- Key Laboratory of Materials Modification by Laser, Ion, and Electron Beams (Ministry of Education), School of Physics, Dalian University of Technology, Dalian116024, China
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Xin C, Liang S, Hu J, Guo J, Cheng X, Shang W, Wei J, Zhang S, Liu W, Zhu C, Hou J, Shi Y. In-Situ Grafting of Single-Atomic Titanium-Nitrogen Moiety onto Carbon Nanostructures for Efficient Photovoltaic Devices. ACS Appl Mater Interfaces 2022; 14:50849-50857. [PMID: 36321608 DOI: 10.1021/acsami.2c14214] [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] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Early transition metals offer promising orthogonal reactivity to catalytic processes promoted by late transition metals. Nevertheless, exploiting variable single-atomic configurations as reactive centers is hitherto not well documented owing to their oxophilic nature. Herein we report an in-situ grafting strategy that employs nitrogenated holey carbon nitrides as a scaffold and invokes the reasonably good match of temperature-dependent pyrolysis to stabilize an atomic titanium-nitrogen (Ti1N2OH) moiety onto the hierarchical porous carbon support (Ti1/NC-SAC). The Ti1/NC-SAC as the cathode in dye-sensitized solar cells assembly exhibited superior electrocatalytic activity toward the triiodine reduction reaction, comparable to the conventional Pt cathode. DFT studies theoretically identified that the intrinsic robust triiodine reduction activity is essentially governed by the unique edge-hosted Ti sites, from both aspects, near-optimal adsorption of I intermediate and electron-donating ability. This work sheds light on the rational design of Ti-based SACs and their applications in photovoltaic fields.
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Affiliation(s)
- Cuncun Xin
- State Key Laboratory of Fine Chemicals, Department of Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Suxia Liang
- School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
| | - Jinwen Hu
- State Key Laboratory of Fine Chemicals, Department of Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Jingya Guo
- State Key Laboratory of Fine Chemicals, Department of Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Xusheng Cheng
- State Key Laboratory of Fine Chemicals, Department of Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Wenzhe Shang
- State Key Laboratory of Fine Chemicals, Department of Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Jiazhen Wei
- State Key Laboratory of Fine Chemicals, Department of Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Songlin Zhang
- State Key Laboratory of Fine Chemicals, Department of Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Wei Liu
- State Key Laboratory of Fine Chemicals, Department of Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Chao Zhu
- SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Collaborative Innovation Center for Micro/Nano Fabrication, Device and System, Southeast University, Nanjing 210096, China
| | - Jungang Hou
- State Key Laboratory of Fine Chemicals, Department of Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Yantao Shi
- State Key Laboratory of Fine Chemicals, Department of Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
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Knight AK, Hipp HS, Abhari S, Gerkowicz SA, Katler QS, McKenzie LJ, Shang W, Smith AK, Spencer JB. Markers of ovarian reserve are associated with reproductive age acceleration in granulosa cells from IVF patients. Hum Reprod 2022; 37:2438-2445. [PMID: 35944168 PMCID: PMC9527469 DOI: 10.1093/humrep/deac178] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 07/20/2022] [Indexed: 11/13/2022] Open
Abstract
STUDY QUESTION Is reproductive aging in granulosa cells associated with markers of ovarian reserve? SUMMARY ANSWER Age acceleration was associated with anti-Mullerian hormone (AMH) levels, antral follicle count (AFC), oocyte yield and maturity, and the number of successfully fertilized embryos. WHAT IS KNOWN ALREADY The rate of reproductive aging varies among women of the same age. DNA methylation can be used to predict epigenetic age in a variety of tissues. STUDY DESIGN, SIZE, DURATION This was a cross-sectional study of 70 women at the time of oocyte retrieval. PARTICIPANTS/MATERIALS, SETTING, METHODS The 70 participants were recruited for this study at an academic medical center and they provided follicular fluid samples at the time of oocyte retrieval. Granulosa cells were isolated and assessed on the MethylationEPIC array. Linear regression was used to evaluate the associations between DNA methylation-based age predictions from granulosa cells and chronological age. Age acceleration was calculated as the residual of regressing DNA methylation-based age on chronological age. Linear regressions were used to determine the associations between age acceleration and markers of ovarian reserve and IVF cycle outcomes. MAIN RESULTS AND THE ROLE OF CHANCE Participants were a mean of 36.7 ± 3.9 years old. In regards to race, 54% were white, 19% were African American and 27% were of another background. Age acceleration was normally distributed and not associated with chronological age. Age acceleration was negatively associated with AMH levels (t = -3.1, P = 0.003) and AFC (t = -4.0, P = 0.0001), such that women with a higher age acceleration had a lower ovarian reserve. Age acceleration was also negatively correlated with the total number of oocytes retrieved (t = -3.9, P = 0.0002), the number of mature oocytes (t = -3.8, P = 0.0003) and the number of fertilized oocytes or two-pronuclear oocytes (t = -2.8, P = 0.008) in the main analysis. LIMITATIONS, REASONS FOR CAUTION This study used pooled follicular fluid, which does not allow for the investigation of individual follicles. Infertility patients may also be different from the general population, but, as we used granulosa cells, the participants had to be from an IVF population. WIDER IMPLICATIONS OF THE FINDINGS This study demonstrated that epigenetic age and age acceleration can be calculated from granulosa cells collected at the time of oocyte retrieval. GrimAge most strongly predicted chronological age, and GrimAge acceleration was associated with baseline and cycle characteristics as well as cycle outcomes, which indicates its potential clinical relevance in evaluating both oocyte quantity and quality. STUDY FUNDING/COMPETING INTEREST(S) This study was supported by the National Institutes of Health (UL1TR002378) and the Building Interdisciplinary Research Careers in Women's Health Program (K12HD085850) to A.K.K. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health. The funding source had no role in any aspect of this study. J.B.S. serves as Vice Chair for the American Society for Reproductive Medicine Education Committee, is a Medical Committee Advisor for the Jewish Fertility Foundation and works with Jscreen. J.B.S. has received funding from Georgia Clinical Translational Research Alliance. H.S.H., J.B.S. and A.K.S. have received NIH funding for other projects. A.K.K., S.A.G., S.G., Q.S.K., L.J.M. and W.S. have no conflicts of interest. TRIAL REGISTRATION NUMBER N/A.
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Affiliation(s)
- A K Knight
- Division of Research, Department of Gynecology and Obstetrics, Emory University School of Medicine, Atlanta, GA, USA
| | - H S Hipp
- Division of Reproductive Endocrinology and Infertility, Department of Gynecology and Obstetrics, Emory University School of Medicine, Atlanta, GA, USA
| | - S Abhari
- Division of Reproductive Endocrinology and Infertility, Johns Hopkins Medicine, Timonium, MD, USA
| | | | - Q S Katler
- Division of Reproductive Endocrinology and Infertility, Department of Gynecology and Obstetrics, Emory University School of Medicine, Atlanta, GA, USA
| | - L J McKenzie
- Division of Reproductive Endocrinology and Infertility, Baylor College of Medicine, Houston, TX, USA
| | - W Shang
- Division of Reproductive Endocrinology and Infertility, Department of Gynecology and Obstetrics, Emory University School of Medicine, Atlanta, GA, USA
| | - A K Smith
- Division of Research, Department of Gynecology and Obstetrics, Emory University School of Medicine, Atlanta, GA, USA
| | - J B Spencer
- Division of Reproductive Endocrinology and Infertility, Department of Gynecology and Obstetrics, Emory University School of Medicine, Atlanta, GA, USA
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11
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Guo J, Shang W, Hu J, Xin C, Cheng X, Wei J, Zhu C, Liu W, Shi Y. Synergistically Enhanced Single-Atom Nickel Catalysis for Alkaline Hydrogen Evolution Reaction. ACS Appl Mater Interfaces 2022; 14:29822-29831. [PMID: 35733359 DOI: 10.1021/acsami.2c05817] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The feature endowing atomic Ni-N-C electrocatalysts with exceptional intrinsic alkaline hydrogen evolution activity is hitherto not well-documented and remains elusive. To this end, we rationally exploited the hierarchical porous carbon microstructures as scaffolds to construct unique Ni-N2+2-S active sites to boost the sluggish Volmer reaction kinetics. Density functional theory reveals an obvious d-band center (ϵd) upshift of the edge-hosted Ni-N2+2-S sites compared with pristine Ni-N4, which translates to a more stabilized OH adsorption. Moreover, the synergetic dual-site (Ni and S atom) interplay gives rise to a decoupled regulation of the adsorption strength of intermediate species (OHad, Had) and thereby energetic water dissociation kinetics. Bearing these in mind, sodium thiosulfate was deliberately adopted as an additive in the molten salt system for controllable synthesis, considering the simultaneous catalyst morphology and active-site modulation. The target Ni-N2+2-S catalyst delivers a low working overpotential (83 mV@10 mA cm-2) and Tafel slope (100.5 mV dec-1) comparable to those of representative transition metal-based electrodes in alkaline media. The present study provides insights into the metal active-site geometry and promising synergistic effects over single-atom catalysis.
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Affiliation(s)
- Jingya Guo
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Wenzhe Shang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Jinwen Hu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Cuncun Xin
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Xusheng Cheng
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Jiazhen Wei
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Chao Zhu
- SEU-FEI Nano-Pico Center, Key Laboratory of MEMS of Ministry of Education, Collaborative Innovation Center for Micro/Nano Fabrication, Device and System, Southeast University, 2 No. 4 Pailou, Nanjing 210096, China
| | - Wei Liu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Yantao Shi
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
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12
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Li Y, Si D, Shang W, Wang J, Guo J, Zhang N, Hao C, Shi Y. Identification of glycolaldehyde, the simplest sugar, in plant systems. NEW J CHEM 2022. [DOI: 10.1039/d2nj01049f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Glycolaldehyde, a C2 compound, is the simplest sugar molecule, but whether it inherently exists in plants remains unclear due to its complicated existence form in different reaction conditions.
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Affiliation(s)
- Yuehui Li
- State Key laboratory of Fine Chemicals, Department of Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Duanhui Si
- State Key laboratory of Fine Chemicals, Department of Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Wenzhe Shang
- State Key laboratory of Fine Chemicals, Department of Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Jing Wang
- State Key laboratory of Fine Chemicals, Department of Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Jingya Guo
- State Key laboratory of Fine Chemicals, Department of Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Naitian Zhang
- State Key laboratory of Fine Chemicals, Department of Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Ce Hao
- State Key laboratory of Fine Chemicals, Department of Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Yantao Shi
- State Key laboratory of Fine Chemicals, Department of Chemistry, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
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Lei D, Shang W, Zhang X, Li Y, Qiao S, Zhong Y, Deng X, Shi X, Zhang Q, Hao C, Song X, Zhang F. Facile Synthesis of Heterostructured MoS 2-MoO 3 Nanosheets with Active Electrocatalytic Sites for High-Performance Lithium-Sulfur Batteries. ACS Nano 2021; 15:20478-20488. [PMID: 34860017 DOI: 10.1021/acsnano.1c09007] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
In order to overcome the shuttling effect of soluble polysulfides in lithium-sulfur (Li-S) batteries, we have designed and synthesized a creative MoS2-MoO3/carbon shell (MoS2-MoO3/CS) composite by a H2O2-enabled oxidizing process under mild conditions, which is further used for separator modification. The MoS2-MoO3 heterostructures can conform to the CS morphology, forming two-dimensional nanosheets, and thus shorten the transport path of lithium ion and electrons. Based on our theoretical calculations and experiments, the heterostructures show strong surface affinity toward polysulfides and good catalytic activity to accelerate polysulfide conversion. Benefiting from the above merits, the Li-S battery with a MoS2-MoO3/CS modified separator exhibits good electrochemical performance: it delivers a high discharge capacity of 1531 mAh g-1 at 0.2 C; the initial capacity can be maintained by 92% after 600 cycles at 1 C, and the discharge capacity decay rate is only 0.0135% per cycle. Moreover, the MoS2-MoO3/CS battery still achieves good cycling stability with 78% capacity retention after 100 cycles at 0.2 C with a high sulfur loading of 5.9 mg cm-2. This work offers a facile design to construct the MoS2-MoO3 heterostructures for high-performance Li-S batteries, and may also improve one's understanding on the heterostructure contribution during polysulfide adsorption and conversion.
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Affiliation(s)
- Da Lei
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
- School of Chemical Engineering, Dalian University of Technology, Panjin 124221, China
| | - Wenzhe Shang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
- School of Chemical Engineering, Dalian University of Technology, Panjin 124221, China
| | - Xu Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
- School of Chemical Engineering, Dalian University of Technology, Panjin 124221, China
| | - Yongpeng Li
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
- School of Chemical Engineering, Dalian University of Technology, Panjin 124221, China
| | - Shaoming Qiao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
- School of Chemical Engineering, Dalian University of Technology, Panjin 124221, China
| | - Yiping Zhong
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
- School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Xiaoyu Deng
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
- School of Chemical Engineering, Dalian University of Technology, Panjin 124221, China
| | - Xiaoshan Shi
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
- School of Chemical Engineering, Dalian University of Technology, Panjin 124221, China
| | - Qiang Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
- School of Chemical Engineering, Dalian University of Technology, Panjin 124221, China
| | - Ce Hao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
- School of Chemical Engineering, Dalian University of Technology, Panjin 124221, China
| | - Xuedan Song
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
- School of Chemical Engineering, Liaoning Key Lab for Energy Materials and Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Fengxiang Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
- School of Chemical Engineering, Dalian University of Technology, Panjin 124221, China
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14
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Zhao Z, Liu W, Shi Y, Zhang H, Song X, Shang W, Hao C. An insight into the reaction mechanism of CO 2 photoreduction catalyzed by atomically dispersed Fe atoms supported on graphitic carbon nitride. Phys Chem Chem Phys 2021; 23:4690-4699. [PMID: 33595561 DOI: 10.1039/d0cp05570k] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a combination of experimental and computational mechanistic studies for the photoreduction of CO2 to CO with water, catalyzed by single-atom Fe supported on graphitic carbon nitride (g-C3N4). Density functional theory (DFT) and time-dependent DFT (TDDFT) methods were utilized to explore the behavior of single-atom Fe in g-C3N4, which is of vital importance to the understanding of the CO2 reduction reaction (CO2RR) mechanism. The calculation results reveal that the rate-limiting step of the hydrogen-bonded complex in the absence of Fe atoms is the cleavage of C-O bonds in COOH radicals during the whole CO2RR, which includes the photophysical and photochemical processes. The presence of Fe atoms not only activated CO2 in the ground state and increased the rate constant of the limiting step in the photophysical process, but also functioned as the catalytic active center, lowering the reaction barrier of the C-O bond cleavage in COOH˙ in the photochemical process and resulting in improved photocatalytic activity. In addition, DFT calculations further demonstrated that the electron and proton transfer involved in the photophysical and photochemical processes is closely related to and induced by the hydrogen bonds in the excited state.
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Affiliation(s)
- Zhengyan Zhao
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, China.
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Yang X, Zhou K, Shang W, Song K. Oral administration of alendronate and vitamin D3 for the treatment of chronic non-bacterial osteomyelitis of the jaw. Int J Oral Maxillofac Surg 2020; 49:1595-1598. [PMID: 32680809 DOI: 10.1016/j.ijom.2020.06.017] [Citation(s) in RCA: 5] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 04/23/2020] [Accepted: 06/26/2020] [Indexed: 11/25/2022]
Abstract
Chronic non-bacterial osteomyelitis (CNO) is a rare and difficult-to-diagnose disease, especially when limited to the jaws. We report the case of a 5-year-old girl with spontaneous jaw pain and a large pre-auricular facial swelling overlying the angle of the mandible that was non-responsive to previous antibiotic and non-steroidal anti-inflammatory treatment. The diagnosis was confirmed as CNO following evaluation and workup by a multidisciplinary team. The patient exhibited a favourable response to oral alendronate sodium plus vitamin D3 combination treatment. We believe that alendronate sodium is an effective second-line drug for CNO.
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Affiliation(s)
- X Yang
- Department of Oral and Maxillofacial Surgery, the Affiliated Hospital of Qingdao University, Shandong Province, China
| | - K Zhou
- Department of Oral and Maxillofacial Surgery, the Affiliated Hospital of Qingdao University, Shandong Province, China
| | - W Shang
- Department of Oral and Maxillofacial Surgery, the Affiliated Hospital of Qingdao University, Shandong Province, China; School of Stomatology, Qingdao University, Shandong Province, China
| | - K Song
- Department of Oral and Maxillofacial Surgery, the Affiliated Hospital of Qingdao University, Shandong Province, China; School of Stomatology, Qingdao University, Shandong Province, China.
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Kong Y, Ge SY, Shang W, Song K. Ectopic parathyroid adenoma in the submandibular region: a case report. Br J Oral Maxillofac Surg 2019; 57:1150-1152. [PMID: 31668332 DOI: 10.1016/j.bjoms.2019.10.296] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 10/04/2019] [Indexed: 11/28/2022]
Abstract
Ectopic parathyroid adenomas that affect the submandibular region have not been widely reported. We describe a 34-year-old man who presented with a painless swelling of the submandibular region. The identification of hypercalcaemia encouraged us to engage a multidisciplinary team to evaluate further serum changes. Parathyroid hormone analysis, 99mTc-methoxy-isobutyl-isonitrile (99mTc-MIBI) scintigraphy, and single-photon emission computed tomography (SPECT-CT) were done to rule out hyperparathyroidism. Raised parathyroid hormone together with 99mTc-MIBI and SPECT-CT examination were consistent with a tumour caused by the hyperparathyroidism. Removal of the lesion resulted in rapid improvement in serum calcium and parathyroid hormone, and the normalisation of the serum creatinine, concentrations. Histopathological analysis confirmed a parathyroid adenoma. We conclude that ectopic parathyroid adenomas should be considered as part of a differential diagnosis for tumours of the submandibular region.
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Affiliation(s)
- Y Kong
- Department of Oral & Maxillofacial Surgery, The Affiliated Hospital of Qingdao University, Shandong Province, China
| | - S Y Ge
- Department of Oral & Maxillofacial Surgery, The Affiliated Hospital of Qingdao University, Shandong Province, China
| | - W Shang
- Department of Oral & Maxillofacial Surgery, The Affiliated Hospital of Qingdao University, Shandong Province, China; School of Stomatology, Qingdao University, Shandong Province, China.
| | - K Song
- Department of Oral & Maxillofacial Surgery, The Affiliated Hospital of Qingdao University, Shandong Province, China; School of Stomatology, Qingdao University, Shandong Province, China.
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Chen M, Han H, Chuai Y, Hao M, Shu M, Shang W. Effects of oral contraceptives on ovulation induction in in vitro fertilization patients with premature ovarian insufficiency. Climacteric 2018; 21:276-279. [PMID: 29488818 DOI: 10.1080/13697137.2018.1439912] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
OBJECTIVE To report a case series of in vitro fertilization patients with premature ovarian insufficiency, who were treated with oral contraceptives to reduce follicle stimulating hormone levels. METHOD This was a consecutive case series in a tertiary teaching hospital in China. Twenty-two women with refractory and idiopathic premature ovarian insufficiency were administered a drospirenone/ethinylestradiol oral contraceptive orally. The main outcome measures were the number of oocytes retrieved and the number of embryos frozen. RESULTS There were total 106 oral contraceptive treatment cycles and 53 oocyte retrieval cycles in 20 patients (91%, 20/22; 2.4 cycles per woman, 53/22). The total number of oocytes retrieved was 48 in 17 patients (77%, 17/22; 2.2 oocytes per woman, 48/22), and the total number of embryos frozen was 33 in 16 patients (73%, 16/22; 1.5 embryos per woman, 33/22). CONCLUSION Oral contraception may be an effective method to induce ovulation for some patients with premature ovarian insufficiency.
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Affiliation(s)
- M Chen
- a Navy Clinical Medical School , Anhui Medical University , Hefei , China.,b Reproductive Medicine Center, Department of Obstetrics and Gynecology , Navy General Hospital , Beijing , China
| | - H Han
- a Navy Clinical Medical School , Anhui Medical University , Hefei , China.,b Reproductive Medicine Center, Department of Obstetrics and Gynecology , Navy General Hospital , Beijing , China
| | - Y Chuai
- b Reproductive Medicine Center, Department of Obstetrics and Gynecology , Navy General Hospital , Beijing , China
| | - M Hao
- b Reproductive Medicine Center, Department of Obstetrics and Gynecology , Navy General Hospital , Beijing , China.,c Department of Histology and Embryology , Hebei Medical University , Shijiazhuang , China
| | - M Shu
- b Reproductive Medicine Center, Department of Obstetrics and Gynecology , Navy General Hospital , Beijing , China
| | - W Shang
- a Navy Clinical Medical School , Anhui Medical University , Hefei , China.,b Reproductive Medicine Center, Department of Obstetrics and Gynecology , Navy General Hospital , Beijing , China
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Abstract
Head and neck cancer is one of the most frequent human malignancies worldwide, with a high rate of recurrence and metastasis. Head and neck squamous cell carcinoma (HNSCC) is cellularly and molecularly heterogeneous, with subsets of undifferentiated cancer cells exhibiting stem cell-like properties, called cancer stem cells (CSCs). Epithelial-mesenchymal transition, gene mutation, and epigenetic modification are associated with the formation of cellular plasticity of tumor cells in HNSCC, contributing to the acquisition of invasive, recurrent, and metastatic properties and therapeutic resistance. Tumor microenvironment (TME) plays a supportive role in the initiation, progression, and metastasis of head and neck cancer. Stromal fibroblasts, vasculature, immune cells, cytokines, and hypoxia constitute the main components of TME in HNSCC, which contributes not only to the acquisition of CSC properties but also to the recurrence and therapeutic resistance of the malignancies. In this review, we discuss the potential mechanisms underlying the development of cellular plasticity, especially the emergence of CSCs, in HNSCC. We also highlight recent studies implicating the complex interplays among TME components, plastic CSCs, tumorigenesis, recurrence, and therapeutic resistance of HNSCC. Finally, we summarize the treatment modalities of HNSCC and reinforce the novel concept of therapeutic targeting CSCs in HNSCC.
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Affiliation(s)
- W Shang
- 1 Department of Oral and Maxillofacial Surgery, The Affiliated Hospital of Qingdao University, Shandong, China.,4 School of Stomatology, Qingdao University, Shandong, China
| | - Q Zhang
- 2 Department of Oral and Maxillofacial Surgery and Pharmacology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Y Huang
- 3 Department of Orthodontics, The Affiliated Hospital of Qingdao University, Shandong, China.,4 School of Stomatology, Qingdao University, Shandong, China
| | - R Shanti
- 2 Department of Oral and Maxillofacial Surgery and Pharmacology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,5 Department of Oral and Maxillofacial Surgery, Perelman Center for Advanced Medicine, Penn Medicine Hospital of the University of Pennsylvania, Philadelphia, PA, USA.,6 Department of Otorhinolaryngology-Head and Neck Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - F Alawi
- 7 Department of Pathology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - A Le
- 2 Department of Oral and Maxillofacial Surgery and Pharmacology, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA, USA.,5 Department of Oral and Maxillofacial Surgery, Perelman Center for Advanced Medicine, Penn Medicine Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - C Jiang
- 3 Department of Orthodontics, The Affiliated Hospital of Qingdao University, Shandong, China.,4 School of Stomatology, Qingdao University, Shandong, China
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Han D, Wang G, Sun L, Ren X, Shang W, Xu L, Li S. Comparison of irinotecan/platinum versus etoposide/platinum chemotherapy for extensive-stage small cell lung cancer: A meta-analysis. Eur J Cancer Care (Engl) 2017; 26. [PMID: 28707433 DOI: 10.1111/ecc.12723] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/13/2017] [Indexed: 12/11/2022]
Abstract
This meta-analysis was performed to compare the effects and toxicities between irinotecan/platinum (IP) and etoposide/platinum (EP) regimens as the fist-line treatment of patients with extensive-stage small cell lung cancer (E-SCLC). A systematic search was made of MEDLINE, Cochrane, ISI Web of Science and SCOPUS databases. Randomised clinical trials on treatment of E-SCLC with the IP regimens, compared with EP regimens, were reviewed. Studies were pooled to hazard ratio (HR), relative risk (RR) and odds ratio (OR), with 95% confidence interval (CI). Eight trials (enrolling 2089 participants) met the inclusion criteria. Overall survival (OS) and 1-year survival rate were superior in the IP group (HR 0.83; 95% CI 0.75 to 0.91 and RR 1.19; 95% CI 1.06 to 1.34). Grades 3 and 4 anaemia, leukopenia, neutropenia, thrombocytopenia and febrile neutropenia were less frequent in the IP regimens than that in the EP regimens. And grades 3 and 4 nausea/vomiting, diarrheal, anorexia and fatigue were less frequent in the EP regimens. IP combination chemotherapy achieved a superior OS and 1-year survival rate, compared with EP doublets, in patients with E-SCLC.
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Affiliation(s)
- D Han
- Department of Respiratory and Critical Care Medicine, Shaanxi Provincial People's Hospital, Xi'an, China
| | - G Wang
- Department of Respiratory and Critical Care Medicine, Shaanxi Provincial People's Hospital, Xi'an, China
| | - L Sun
- Department of Respiratory and Critical Care Medicine, Shaanxi Provincial People's Hospital, Xi'an, China
| | - X Ren
- Department of Respiratory and Critical Care Medicine, Shaanxi Provincial People's Hospital, Xi'an, China
| | - W Shang
- Department of Respiratory and Critical Care Medicine, Shaanxi Provincial People's Hospital, Xi'an, China
| | - L Xu
- Department of Respiratory and Critical Care Medicine, Shaanxi Provincial People's Hospital, Xi'an, China
| | - S Li
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Medical College, Xi'an Jiaotong University, Xi'an, China
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Shang W, Ma M, Ge YP, Liu N, Zhu JM, Sun LZ. Analysis of risk factors of type a aortic dissection (TAAD) operation of frozen elephant trunk and total arch replacement. Eur Rev Med Pharmacol Sci 2016; 20:4586-4592. [PMID: 27874962] [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: 06/06/2023]
Abstract
OBJECTIVE To investigate the incidence and risk factors of acute renal failure (ARF) after operation of frozen elephant trunk and total arch replacement for acute thoracic aortic aneurysm and dissection (TAAD) with mild hypothermic circulatory arrest (MHCA), and to analyze the long-term survival rate of the patients with ARF. PATIENTS AND METHODS From February 2009 to March 2015, patients with acute TAAD accepted operation of frozen elephant trunk and total arch replacement were enrolled. Those patients who were treated with renal replacement treatment (RRT) before the operation were excluded. The age, gender, cardiovascular disease history, preoperative serum creatinine and extracorporeal circulation duration in operation were recorded. On the basis of requiring RRT after TAAD operation, the patients were divided into ARF group and non-ARF group. The risk factors of ARF after TAAD operation were assessed by univariate and multivariate analysis. After completion of clinical follow-up, Kaplan-Meier curve was drawn to analyze five-year survival. RESULTS A total of 524 patients were included in the study. 51 cases of them got postoperative ARF. The incidence was 9.7%. The mortality rate of ARF group in the hospital was significantly higher than non-ARF group (25.5% vs. 3.6%; p<0.001). Univariate analysis showed that there was statistically significant difference in the age, gender, hypertension history, preoperative serum creatinine ≥200 µmol/L, extracorporeal circulation duration ≥260 min and combined with coronary artery bypass surgery simultaneously (p<0.05). Multiple logistic regression analysis showed that there were three independent risk factors of ARF after the operation, including hypertension (p=0.031, OR=2.377), preoperative serum creatinine ≥200 µmol/L (p=0.005, OR=4.451) and extracorporeal circulation duration ≥260 min (p=0.002, OR=3.295). The total five-year survival rate of ARF group after the operation was 56%. There was no statistically significant difference in the five-year survival rate between preoperative serum creatinine ≥200 µmol/L group and <200 µmol/L group (p>0.05). CONCLUSIONS The incidence of ARF after the operation was 9.7%. Preoperative serum creatinine ≥200 µmol/L, hypertension history and extracorporeal circulation duration ≥260 min were independent risk factors of ARF after the operation. The five-year survival rate of ARF after the operation was 56%. The preoperative serum creatinine level had no influence on the postoperative long-term survival.
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Affiliation(s)
- W Shang
- Center of Cardiac Intensive Care, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.
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Zhang XW, Liang DP, Li J, Fu WW, Shang W, Li W, Xu ZJ. [Diagnosis and management of head and neck Castleman's disease]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:1561-1563. [PMID: 29871142 DOI: 10.13201/j.issn.1001-1781.2016.19.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Indexed: 06/08/2023]
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Sun X, Shang W, Wang Z, Liu X, Fang X, Ke M. Short-term and long-term effect of diaphragm biofeedback training in gastroesophageal reflux disease: an open-label, pilot, randomized trial. Dis Esophagus 2016; 29:829-836. [PMID: 26227494 DOI: 10.1111/dote.12390] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This study investigated the effectiveness of diaphragm biofeedback training (DBT) for patients with gastroesophageal reflux disease (GERD). A total of 40 patients with GERD treated at the Peking Union Medical College Hospital between September 2004 and July 2006 were randomized to receive DBT and rabeprazole proton pump inhibitor (PPI) or rabeprazole alone. The DBT + rabeprazole group received DBT during the 8-week initial treatment; the rabeprazole group did not. During the 6-month follow up, all patients took acid suppression according to their reflux symptoms, and the patients in the DBT + rabeprazole group were required to continue DBT. The primary outcome (used for power analysis) was the amount of acid suppression used at 6 months. Secondary outcomes were reflux symptoms, health-related quality of life (HRQL), and esophageal motility differences after the 8-week treatment compared with baseline. Acid suppression usage significantly decreased in the DBT + rabeprazole group compared with the rabeprazole group at 6 months (P < 0.05). At 8 weeks, reflux symptoms and GERD-HRQL were significantly improved in both groups (P < 0.05), without difference between them. Crural diaphragm tension (CDT) and gastroesophageal junction pressure (GEJP) significantly increased in the DBT + rabeprazole group (P < 0.05), but without change in lower esophageal sphincter (LES) pressure. There was no significant change in CDT, GEJP, and LES pressure compared with baseline in the rabeprazole group. In conclusion, long-term DBT could reduce acid suppression usage by enhancing the anti-reflux barrier, providing a non-pharmacological maintenance therapy and reducing medical costs for patients with GERD.
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Affiliation(s)
- X Sun
- Department of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - W Shang
- Department of Gastroenterology, Guangdong Provincail Traditional Chinese Medicine Hosptial, Guangzhou, China
| | - Z Wang
- Department of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - X Liu
- Department of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - X Fang
- Department of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - M Ke
- Department of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
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Zhang Z, Tian NC, Huang XD, Shang W, Wu L. Synergistic inhibition of carbon steel corrosion in 0.5 M HCl solution by indigo carmine and some cationic organic compounds: experimental and theoretical studies. RSC Adv 2016. [DOI: 10.1039/c5ra25359d] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The synergistic corrosion inhibition effect of indigo carmine and three kinds of cationic organic compounds on 1045 carbon steel (CS) in 0.5 M HCl solution is reported.
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Affiliation(s)
- Z. Zhang
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin 541004
- PR China
| | - N. C. Tian
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin 541004
- PR China
| | - X. D. Huang
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin 541004
- PR China
| | - W. Shang
- Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin 541004
- PR China
| | - L. Wu
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- PR China
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Zhang W, Li K, Zhu X, Wu D, Shang W, Yuan X, Huang Z, Zheng M, Wang X, Yang D, Liu J, Cheng H. Subsarcolemmal mitochondrial flashes induced by hypochlorite stimulation in cardiac myocytes. Free Radic Res 2014; 48:1085-94. [PMID: 24912881 DOI: 10.3109/10715762.2014.932114] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Mitochondrial superoxide flash (mitoflash) reflects quantal and bursting superoxide production and concurrent membrane depolarization triggered by transient mitochondrial permeability transition in many types of cells, at the level of single mitochondria. Here we investigate reactive oxygen species (ROS)-mediated modulation of mitoflash activity in cardiac myocytes and report a surprising finding that hypochlorite ions potently and preferentially triggered mitoflashes in the subsarcolemmal mitochondria (SSM), whereas hydrogen peroxide (H2O2) elicited mitoflash activity uniformly among SSM and interfibrillar mitochondria (IFM). The striking SSM mitoflash response to hypochlorite stimulation remained intact in cardiac myocytes from NOX2-deficient mice, excluding local NOX2-mediated ROS as the major player. Furthermore, it occurred concomitantly with SSM Ca(2+) accumulation and local Ca(2+) and CaMKII signaling played an important modulatory role by altering frequency and unitary properties of SSM mitoflashes. These findings underscore the functional heterogeneity of SSM and IFM and the oxidant-specific responsiveness of mitochondria to ROS, and may bear important ramifications in devising therapeutic strategies for the treatment of oxidative stress-related heart diseases.
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Affiliation(s)
- W Zhang
- State Key Laboratory of Biomembrane and Membrane Biotechnology, Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Institute of Molecular Medicine, Peking-Tsinghua Center for Life Sciences, Peking University , Beijing , China
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Xu P, Lin S, Wei L, Shang W. Antineutrophil cytoplasmic antibody-associated vasculitis associated with Epstein-Barr virus infection: a case report and review of the literature. Infection 2014; 42:591-4. [PMID: 24610176 DOI: 10.1007/s15010-014-0606-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Accepted: 02/22/2014] [Indexed: 12/21/2022]
Abstract
A 16-year-old female with fever was admitted to our hospital. On admission, her serum IgM antibody against Epstein-Barr virus (EBV) was positive. Then, the disease aggravated and acute kidney injury occurred gradually. Antineutrophil cytoplasmic autoantibody (ANCA)-associated vasculitis (AAV) was confirmed by serum test and kidney biopsy. The patient was treated with oral methylprednisolone. Along with the disappearance of the IgM anti-EBV antibody, the AAV also relieved without relapse during follow-up for half a year. Although a previous study indicated that there was a high positive rate of ANCA in the sera positive for IgM antibodies to EBV and EBV infection might trigger the relapse of AAV, this is the first case of incipient AAV associated with acute EBV infection. One possible explanation might be that EBV infection stimulated the production of ANCA.
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Affiliation(s)
- P Xu
- Department of Nephrology, General Hospital of Tianjin Medical University, 300052, Tianjin, China,
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Shang W, Shu MM, Liu M, Wang AM, Lv LB, Zhao Y, Li M, Yan L. Elevated expressions of p53, CDKNA1, and Bax in placental villi from patients with recurrent spontaneous abortion. Eur Rev Med Pharmacol Sci 2013; 17:3376-3380. [PMID: 24379070] [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: 06/03/2023]
Abstract
OBJECTIVE This study assessed the relationship between the p53-dependent apoptosis and recurrent spontaneous abortion (RSA). PATIENTS AND METHODS Thirty women with recurring miscarriages were enrolled as experimental group, and 30 women with normal reproduction served as control group. Immunohistochemistry was used to evaluate expression of p53 in villous tissue specimens. Further, expressions of CDKN1A and Bax mRNAs were evaluated by qPCR. TUNEL assay was utilized to document cell apoptosis. RESULTS Expression of p53 was significantly increased in chorionic villi of patients in experimental group (p < 0.05 vs. control group). Further, CDKN1A and Bax mRNA levels were elevated in experimental group (p < 0.05 vs. control group), and the cell apoptosis index was increased as well. CONCLUSIONS The p53-CDKN1A and p53-Bax signaling pathways appear to be activated in RSA. Thus, the apoptosis pathways controlled by p.
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Affiliation(s)
- W Shang
- Naval General Hospital, PLA, Beijing, China.
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Zarepisheh M, Shakourifar M, Trigila G, Ghomi PS, Couzens S, Abebe A, Noreña L, Shang W, Jiang SB, Zinchenko Y. A moment-based approach for DVH-guided radiotherapy treatment plan optimization. Phys Med Biol 2013; 58:1869-87. [DOI: 10.1088/0031-9155/58/6/1869] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Shang W, Feng G, Sun R, Wang X, Liu W, Zhang S, Li J, Pang X, Wang Y, Zhang W. Comparison of micafungin and voriconazole in the treatment of invasive fungal infections in kidney transplant recipients. J Clin Pharm Ther 2012; 37:652-6. [PMID: 22725946 DOI: 10.1111/j.1365-2710.2012.01362.x] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
WHAT IS KNOWN AND OBJECTIVE Invasive fungal infections are a major threat to renal transplant recipients. Micafungin and voriconazole are two useful antifungal agents for treating such infections. Our objective is to evaluate the comparative efficacy and safety of micafungin and voriconazole in the initial treatment of such infections. METHODS In this prospective, multicentre, open-labelled, randomized, controlled trial, renal transplant recipients with invasive fungal infections were assigned to receive either micafungin or voriconazole. The enrolled subjects received a kidney transplant between March 2008 and March 2010 at one of the two transplant centres in Henan Province, China. The efficacy and adverse effects of the two treatments were compared. RESULTS AND DISCUSSION The clinical trial enrolled 65 patients, of whom 31 were treated with micafungin, and 34 with voriconazole. The rates of microbiological evidence of infection in the micafungin and voriconazole groups were 64.5% and 70.5%, respectively, whereas the rates of Candida as the major cultured fungus were 80.0% and 75.0%, respectively. Complicated bacterial infection rates in the two treatment groups were 38.7% and 32.4%, respectively, whereas complicated CMV viral infection occurred at a rate of 19.2% and 23.5%, respectively. Fungal infection within one to 3 months after transplant was 83.6% (26/31) and 85.3% (29/34) in the micafungin and voriconazole groups, respectively. There was no significant difference between the two groups in terms of efficacy, survival beyond 10 days and discontinuation of treatment because of lack of efficacy (P > 0.05). Mortality rates in the micafungin and voriconazole groups were 9.7% (3/31) and 12.1% (4/33), respectively. Rates of adverse effects in the two groups were 41.9% and 51.6% (P > 0.05), respectively. WHAT IS NEW AND CONCLUSIONS This is the first comparison of micafungin and voriconazole in renal transplant patients. Our study shows that the effectiveness of micafungin was similar to that of voriconazole in such patients.
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Affiliation(s)
- W Shang
- Department of Kidney Transplantation, The 1st Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Yu W, Lin Q, Guermazi A, Yu X, Shang W, Zhu H, Meng W, Xu R, Zhao Y. Comparison of radiography, CT and MR imaging in detection of arthropathies in patients with haemophilia. Haemophilia 2009; 15:1090-6. [PMID: 19515027 DOI: 10.1111/j.1365-2516.2009.02044.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
To compare magnetic resonance (MR) imaging, computed tomography (CT) and radiography for the detection of arthropathies in patients with haemophilia. Forty-one symptomatic joints in 14 men with haemophilia, ages 11-24 years (mean age 17.5 +/- 3.9 years) were examined with radiography, CT and MR. Images of each joint were acquired on the same day. The precontrast MR examination obtained coronal spin-echo T1 images and gradient echo with rephasing T2* images, as well as sagittal, axial gradient echo with rephasing T2* images using a low-field-strength 0.3-T MR imager. For the postcontrast MR examination, coronal, sagittal and axial images were acquired using the same precontrast T1 sequence. Thirteen joints were also examined on enhanced MR. The severity of damage was classified using conventional radiographical staging. Severely affected haemophilic arthropathy (HA) patients (stage 5) were excluded. Findings of soft tissue swelling, osteoporosis, epiphyseal overgrowth, joint erosion, cysts, joint space narrowing, bone marrow oedema, joint effusion, haemorrhage, synovial hypertrophy and widened intercondylar notches as well as anterior and posterior cruciate ligaments (for the knee) were used in all imaging comparisons. The joints were classified by radiographical criteria into stage 0 (n = 5), stage 1 (n = 7), stage 2 (n = 6), stage 3 (n = 8) and stage 4 (n = 15). Soft tissue swelling or joint effusion was observed in 33 joints on radiographs, in 34 on both CT and MR; joint erosions were observed in 34 joints on MR, 33 on CT and 20 on radiographs. Joint cysts appeared in 21 joints on MR, 18 on CT and 9 on radiographs. Significant differences in detection of erosion and cysts were found between radiography and CT (P < 0.05) and radiography and MR imaging (P < 0.05), not between CT and MR (P > 0.05). MR was better for detecting foci of both erosion and cysts than CT and radiography, and CT was better than radiography. MR imaging, CT and radiography were equally effective in showing the changes of epiphyseal overgrowth in 26 joints, joint space narrowing in 14 joints and widened intercondylar notches in 20 knee joints. However, only MR imaging detected tears in 17 anterior and 13 posterior cruciate ligaments in the 20 knee joints with widened intercondylar notches. Bone marrow oedema in 14 joints, haemorrhage in 34 joints and synovial hypertrophy in 27 joints were seen on MR images, but not on CT or radiography. MR imaging is superior to CT and conventional radiography for detecting abnormal changes and should be considered the first choice among imaging modalities in evaluating HAs.
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Affiliation(s)
- W Yu
- Department of Radiology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, China.
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Davies TA, Shang W, Bush K, Flamm RK. Activity of doripenem and comparator -lactams against US clinical isolates of Streptococcus pneumoniae with defined mutations in the penicillin-binding domains of pbp1a, pbp2b and pbp2x. J Antimicrob Chemother 2008; 61:751-3. [DOI: 10.1093/jac/dkn004] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Schellekens H, Shang W, Lenstra K. Calculation of three-dimensional magnetic field for horseshoe electrode of vacuum interrupters. ACTA ACUST UNITED AC 2007. [DOI: 10.1002/etep.4450030408] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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32
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Spencer J, Shang W, Sun W, Session D, Ledbetter D, Martin CL. Developing a single cell oligonucleotide array-CGH test for aneuploid screening. Fertil Steril 2007. [DOI: 10.1016/j.fertnstert.2007.07.799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Zhang Y, Chen X, Zheng X, Zhao J, Sun Y, Zhang X, Ju Y, Shang W, Liao F. Review of water reuse practices and development in China. Water Sci Technol 2007; 55:495-502. [PMID: 17305175 DOI: 10.2166/wst.2007.013] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The paper reviews existing urban water reuse schemes in north China including existing policies, institutional, technical and financial practices, summarises the data of nine water reclamation plants in six case study cities, highlights key issues and constraints, and presents development trend in water reuse sector. It is based on an intensive study programme financed by the World Bank in 2004/2005.
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Affiliation(s)
- Y Zhang
- Department of Urban Development, Ministry of Construction, No.9 Sanlihe Road, Beijing 100835, China
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Affiliation(s)
- M. M. Labes
- a Department of Chemistry , Temple University , Philadelphia , PA , 19122
| | - V. Ramesh
- a Department of Chemistry , Temple University , Philadelphia , PA , 19122
- b Exxon Research & Engineering , Rt 22E, Annandale , NJ , 08801
| | - A. Nunez
- a Department of Chemistry , Temple University , Philadelphia , PA , 19122
| | - W. Shang
- a Department of Chemistry , Temple University , Philadelphia , PA , 19122
| | - X. Luo
- a Department of Chemistry , Temple University , Philadelphia , PA , 19122
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Abstract
Alternating hemiplegia of childhood is a rare syndrome characterized by the onset, before 18 months of age, of frequent attacks of alternating paralysis. Here we report the efficacy of topiramate in four patients with alternating hemiplegia of childhood (AHC) that did not respond to flunarizine, as well as in two newly diagnosed patients. Following treatment with topiramate, the frequency and duration of hemiplegic attacks significantly improved in all patients. Additional symptoms such as seizures, migraine, involuntary movements, autonomic symptoms, and impaired mental development also improved. Topiramate is worth trying when treating patients with AHC as a first trial, or a substitute for flunarizine once the latter agent loses effect.
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Affiliation(s)
- Wj Jiang
- Department of Neurology, Qilu Hospital of Shandong University, Jinan, China
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Abstract
We examined the pathogenesis of Schmorl’s nodes, correlating the histological findings from 12 lumbar vertebrae with the corresponding conventional radiographs, tomographs, MR images and CT scans. The last revealed round, often multiple cystic lesions with indistinct sclerotic margins beneath the cartilaginous endplate. The appearances are similar to the typical CT changes of osteonecrosis. Histological examination of en-bloc slices through Schmorl’s nodes gave clear evidence of subchondral osteonecrosis. Beneath the cartilage endplate, we found fibrosis within the marrow cavities with the disappearance of fat cells. Osteocytes within bone trabeculae were either dead or had disappeared. We suggest that Schmorl’s nodes are the end result of ischaemic necrosis beneath the cartilaginous endplate and that herniation into the body of the vertebra is secondary.
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Ma M, Zhao H, Wang Z, Shang W. [Mutagenic activity of organic pollutants extracted from waters in Guanting Reservoir and Yongding River]. Wei Sheng Yan Jiu 2001; 30:355-7. [PMID: 12561619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
Abstract
Water samples collected from Guanting Reservoir and Yongding River in July 1999 were examined by Ames test to evaluate the mutagenic activity of organic pollutants. The samples have been concentrated by using XAD-2 resin filled columns. In the test with strain TA98, direct mutagenic effects (-S9) were observed in water extracted from Bridge No.8 and Yanchi at the dosage of 0.8 L/plate, indicating the existence of direct frame shift mutagens. The mutagenic effects disappeared after addition of S9, indicating no pro-mutagen in the samples. In the test with strain TA100, direct base pair substitute mutagenic effect was observed only in the sample from Bridge No. 8 at the dosage of 0.4 L/plate. When adding S9, suspicious positive reaction could exist at the dosage of 0.8 L/plate. The results demonstrated that the water in Yongding River has been heavily polluted by mutagens, for which further studies should be carried out to identify the sources and types of these mutagens.
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Affiliation(s)
- M Ma
- Research Center for Eco-environment Sciences, Chinese Academy of Sciences, Beijing 100085, China
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Abstract
Although distraction osteogenesis can lengthen congenitally small mandibles, the distraction procedure can be difficult to control. To study the efficacy and safety of orthodontic spring guidance on bilateral mandibular distraction, an 8-mm anterior open bite was experimentally produced and corrected during bilateral mandibular distraction in rabbits. Orthodontic springs were attached to the anterior maxilla and mandible to redirect an ongoing distraction procedure. Sixteen rabbits underwent mandibular distraction: 6 rabbits received heavy springs (8 oz), 6 rabbits received light force springs (2 oz), and 4 rabbits served as control animals with anterior open bites without spring guidance. Nickel-titanium springs were applied during the last week of osseous distraction and the first week of consolidation. Distractors were left in place throughout a 2-month consolidation period. None of the animals developed fibrous union as a result of spring guidance. The 8-mm open bite did not close in the control group or in the light spring group after 2 weeks of spring wear or during the consolidation period. Heavy springs completely closed the experimental open bites within 2 weeks (P <.01, analysis of variance). Bite corrections did not change during the consolidation period. This study indicated that the addition of an orthodontic spring to a mandibular distraction procedure did not impair bone healing. With the distraction device in place, heavy spring forces redirected an ongoing mandibular distraction procedure and corrected an open bite, distraction side effect. Direct measurements, radiographic measurements, and tissue histologic factors described changes in segment position and shape of the distraction site.
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Affiliation(s)
- S L Yen
- Center for Craniofacial Molecular Biology, University of Southern California School of Dentistry, Los Angeles 90033, USA.
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Shang W, Konidari I, Schomberg DW. 2-Methoxyestradiol, an endogenous estradiol metabolite, differentially inhibits granulosa and endothelial cell mitosis: a potential follicular antiangiogenic regulator. Biol Reprod 2001; 65:622-7. [PMID: 11466234 DOI: 10.1095/biolreprod65.2.622] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
2-Methoxyestradiol (2-ME) is an estradiol metabolite with antiangiogenic and antitumor activity. It is formed by granulosa cell (GC) catechol-O-methyltransferase activity and is present in the normal follicle at high concentrations. In this unique microenvironment, it may regulate selected cell types via autocrine and/or paracrine action. To assess the possibility that 2-ME or estradiol might exert differential mitotic and/or apoptotic effects on endothelial cells and GCs, we compared their actions on primary cultures of hormone- and/or growth factor-stimulated porcine GCs (pGCs) as well as two types of endothelial cells, primary cultures of porcine endothelial cells (pECs), and a spontaneously transformed rabbit endothelial vascular cell (REVC) line. The 2-ME, but not estradiol, dose dependently suppressed tritiated thymidine ((3)H-T) incorporation into epidermal growth factor (EGF)-stimulated REVCs and EGF/insulin (INS)-stimulated pECs. In contrast, 2-ME did not attenuate incorporation in FSH/INS-stimulated pGCs. It reduced incorporation by approximately 50% in EGF/INS-stimulated pGCs, indicating that responsiveness to 2-ME in normal cells can be modulated by hormone and growth factor treatment. Estradiol was not antimitotic to pGCs. As indicated by 4',6-diamido-2-phenylindole hydrochloride nuclear staining, estradiol was nonapoptotic in either cell type, and 2-ME significantly increased apoptosis of REVCs, but not of pGCs. In a cell migration assay, REVC movement was attenuated by 2-ME, but not by estradiol. In summary, the results show that antimitotic as well as proapoptotic responses to 2-ME vary with cell type and, in the case of pGC antimitotic activity, with the regulatory microenvironment. Thus, they provide a rationale for autocrine and/or paracrine action of 2-ME at its site of production in vivo, and they strongly support the concept of 2-ME as a candidate ovarian angiogenesis inhibitor.
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Affiliation(s)
- W Shang
- Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, North Carolina 27710, USA
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Shang W, Cheng H. Advances in TCM research of insulin resistance. J TRADIT CHIN MED 2001; 21:141-6. [PMID: 11498906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Affiliation(s)
- W Shang
- Institute of TCM and Pharmacy of Nanjing, University of TCM and Pharmacy, 210029
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Zhou X, Zhou Z, Jin M, Wang H, Wu M, Gu Q, Wang Z, Shang W. Intermediate and late rheumatoid arthritis treated by tonifying the kidney, resolving phlegm and removing blood stasis. J TRADIT CHIN MED 2000; 20:87-92. [PMID: 11038992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Eighty-seven cases of intermediate and late rheumatoid arthritis were treated with Instant Shu Guan Wen Jing Granules ([symbol: see text] Relaxing Joints by Warming Channels) and Instant Shu Guan Qing Luo Granules ([symbol: see text] Relaxing Joints by Removing Heat from the Lung Channel) to tonify the kidney, resolve phlegm and remove blood stasis, and compared with 41 cases treated with Instant Wang Bi Granules ([symbol: see text] Prescription for Arthralgia-syndrome). The treatment produced a clinical cure rate of 54.0% and a total effective rate of 90.8% as in against 29.3% and 73.2% respectively in the control group. The difference was significant (P < 0.01). Improvement in main symptoms and laboratory findings in the treatment group was all more marked than that in the control group (P < 0.05 or P < 0.01), with no side effects observed.
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Affiliation(s)
- X Zhou
- Nanjing University of TCM and Pharmacy
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42
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Shang W, Pan Y, He W. [Clinical and experimental study on effect of burn Jinhuang liquid in treating wound of II degree of burns]. Zhongguo Zhong Xi Yi Jie He Za Zhi 1999; 19:731-3. [PMID: 11783145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE To explore therapeutic effect of Chinese herbal drug Burn Jinhuang Liquid (BJHL) in treating II degree (II- and II+ degree) burn injury. METHODS One hundred and twenty II degree burn patients were treated with BJHL, the clinical effect was compared with that of moist exposure burn ointment (MEBO). Animal experiments on the effect of BJHL were conducted. RESULTS To compare with MEBO, BJHL has a better effect of bacteria inhibition and declining rate of wound infection and shortening time of wound healing through clinical and experimental study. There was no irritation to the burn wound, and it has no side and toxic effects to the liver and kidney. CONCLUSION BJHL has a comprehensive effect of bacteria inhibition, analgesis and wound healing improvement.
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Affiliation(s)
- W Shang
- Wuhu First People's Hospital, Anhui (241000)
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Li N, Shang W, Yuan R. [The use of nasopharyngeal fiberoscope and obturator for treating velopharngeal incompetence]. Zhonghua Kou Qiang Yi Xue Za Zhi 1998; 33:181-2. [PMID: 11774427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE Using NPF and obturator to treat velopharyngeal incompetence. METHODS Obturator was made based on the size of the velopharyngeal aperture determined with NPF. RESULTS All of 45 cases was better in the velopharyngeal function, 15 cases (33%) had normal speech when the obturator was taken away after 2 years. CONCLUSION This is a good conservative method for treating VPI of cleft palate postsurgery.
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Affiliation(s)
- N Li
- Department of Stomatology, Affiliated Hospital, Medical College, Qingdao University, Qingdao, 266003
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Abstract
The D1 reaction center protein of photosystem II usually exhibits a rapid turnover in light. The D1 protein turnover was compared in three species of alpine plants, Homogyne alpina, Ranunculus glacialis, Soldanella alpina, and in the lowland plant Taraxacum officinale by radioactive labeling in light and subsequent chase experiments. The D1 protein of alpine plants could also be recognized by its more rapid labeling, relative to other membrane proteins. However, compared to T. officinale the turnover of the D1 protein was considerably slower in the alpine plants. The potential advantage of a slow D1 turnover for adaptation to the environmental conditions of high mountain plants is discussed.
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Affiliation(s)
- W Shang
- Botanisches Institut, Goethe-Universität, Frankfurt am Main, Germany
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Abstract
A major secretory protein produced by bovine chorioallantoic membranes, in vitro, was previously identified as the carboxyl-propeptide of alpha-1 type III collagen. In the present study, the protein and gene expression of procollagen III by bovine chorioallantois between days 17 and 45 of pregnancy was investigated. In addition, differential usage of multiple transcription termination sites by chorioallantois was examined. Two-dimensional PAGE of proteins synthesized and released by whole conceptuses or isolated chorioallantoic membranes into culture medium demonstrated that the C-terminal of procollagen III was not detectable before day 21 of pregnancy and concentrations increased thereafter. Developmental gene expression was determined by Northern blot analysis using a probe (A) that preceded all five polyadenylation sites of the previously sequenced clone 9.22. Procollagen III mRNA expression was undetectable at day 17, low on day 20, and increased through day 36. Two major transcripts of 5.9 and 4.9 kb were identified, the latter of which was expressed more prominently. A second probe (B), which terminated between poly-A sites 2 and 3, was designed to identify transcripts that terminated at poly-A site 1 or 2. This probe bound to the 5.9-kb mRNA only. Two additional procollagen III cDNA clones were isolated from our bovine conceptus cDNA library and sequenced. One, designated 9.29, terminated at poly-A site 5. The other, designated 11.7, terminated at poly-A site 2, indicating that the bovine conceptus uses these stop sites in procollagen III transcription. Results from this study demonstrate that procollagen III gene and protein expression coincide with the development of the allantois, which progressively fuses with the chorion forming the chorioallantois placenta. In addition, multiple termination sites are used in procollagen III transcription.
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Affiliation(s)
- W Shang
- Department of Animal Science, University of Tennessee, Knoxville, 37901, USA
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46
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Zheng Y, Shang W, Wang Y. [Study of neonatal immunological function in breast feeding and formula feeding]. Zhonghua Fu Chan Ke Za Zhi 1995; 30:584-7. [PMID: 8745501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
OBJECTIVE To determine 4 immunoglobulins and soluble interleukin-2 receptor (sIL-2R) in maternal and neonatal serum, in order to study the immunological functions in the neonates. METHODS 80 cases were divided into three groups: (1) breast feeding group (30 cases), (2) formula feeding group (20 cases), and (3) mixed feeding group (30 cases). Maternal serum was collected prior to delivery and on the sixth day after delivery. Neonatal serum was collected on the third and sixth day after delivery. Umbilical blood at birth was obtained also. Secretory immunoglobulin A (SIgA), IgA, IgG, IgM and sIL-2R levels in the sera were determined by radioimmunoassay and enzyme-linked immunosorbent assay. RESULTS The SIgA, IgA, IgG, IgM and sIL-2R levels in maternal serum were not significantly different among 3 groups, while neonatal serum SIgA, IgA, IgG, IgM and sIL-2R levels on the sixth day after delivery in the breast feeding group were significantly higher than those in the formula breeding group (P < 0.001, P < 0.001, P < 0.05, P < 0.05). CONCLUSION Breast feeding may improve neonatal humoral and cellular immunity.
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Affiliation(s)
- Y Zheng
- Changchun Hospital of Obstetrics and Gynecology
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Jia MY, Jin ZQ, Fan GW, Shang W, Tang YS. [Treatment of maxillofacial hemangioma with Pingyanmycin :A clinical analysis of 27 cases.]. Shanghai Kou Qiang Yi Xue 1994; 3:137-8. [PMID: 16538307] [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: 05/07/2023]
Abstract
24 cases of maxillofacial cavernous hemangioma with local injections of Pingyanmycin were reported.The hemangiomas were located in the floor of the mouth,soft palate and parotid glands with an average surface area of 2.5cmx3.5cm,The strawberry hemangioma were with an average surface area of 5cmx6cm,All the cavernous hemogioma were cured with an average of 8.0 injections,using an average total dose of 58mg,After clinical observation from 10 to 30 months,there were no recurrence found and normal maxillofacial appearance and function were maintained,strawberry hemangioma of 3 cases were treated with an average of 5 injections using an average total dose of 34mg,there were no effects.This paper also has studied the mechanism of action of local injection with Pingyanmycin.
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Affiliation(s)
- M Y Jia
- Department of Dentistry, Affiliated Hospital of Qingdao Medical University. Shandong 266003, China
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