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Longfellow B, Gallant AT, Sargsyan GH, Burkey MT, Hirsh TY, Savard G, Scielzo ND, Varriano L, Brodeur M, Burdette DP, Clark JA, Lascar D, Launey KD, Mueller P, Ray D, Sharma KS, Valverde AA, Wilson GL, Yan XL. Improved Tensor Current Limit from ^{8}B β Decay Including New Recoil-Order Calculations. Phys Rev Lett 2024; 132:142502. [PMID: 38640383 DOI: 10.1103/physrevlett.132.142502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 01/11/2024] [Accepted: 03/11/2024] [Indexed: 04/21/2024]
Abstract
A precision measurement of the β^{+} decay of ^{8}B was performed using the Beta-decay Paul Trap to determine the β-ν angular correlation coefficient a_{βν}. The experimental results were combined with new ab initio symmetry-adapted no-core shell-model calculations to yield the second-most precise measurement from Gamow-Teller decays, a_{βν}=-0.3345±0.0019_{stat}±0.0021_{syst}. This value agrees with the standard model value of -1/3 and improves uncertainties in ^{8}B by nearly a factor of 2. By combining results from ^{8}B and ^{8}Li, a tight limit on tensor current coupling to right-handed neutrinos was obtained. A recent global evaluation of all other precision β decay studies suggested a nonzero value for right-handed neutrino coupling in contradiction with the standard model at just above 3σ. The present results are of comparable sensitivity and do not support this finding.
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Affiliation(s)
- B Longfellow
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - A T Gallant
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - G H Sargsyan
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - M T Burkey
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - T Y Hirsh
- Soreq Nuclear Research Center, Yavne 81800, Israel
| | - G Savard
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
- Department of Physics, University of Chicago, Chicago, Illinois 60637, USA
| | - N D Scielzo
- Lawrence Livermore National Laboratory, Livermore, California 94550, USA
| | - L Varriano
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
- Department of Physics, University of Chicago, Chicago, Illinois 60637, USA
| | - M Brodeur
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - D P Burdette
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
- Department of Physics and Astronomy, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - J A Clark
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - D Lascar
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
- Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, USA
| | - K D Launey
- Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - P Mueller
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - D Ray
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
- Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - K S Sharma
- Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - A A Valverde
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
- Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - G L Wilson
- Department of Physics and Astronomy, Louisiana State University, Baton Rouge, Louisiana 70803, USA
| | - X L Yan
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
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He D, Su CL, Xue T, Wang JH, Chen K, Zhao NJ, Hu SQ, Hua R, Xu T, Yan XL. [Serum glycocalyx markers in patients after cardiac arrest: association with outcomes]. Zhonghua Yi Xue Za Zhi 2024; 104:63-68. [PMID: 38178770 DOI: 10.3760/cma.j.cn112137-20230829-00322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
Objective: To assess the levels of serum glycocalyx markers in the first 24 hours after cardiac arrest (CA) and investigate their relationship with 30-day outcomes. Methods: A retrospective cohort study was conducted on prospectively collected data from CA patients, who were admitted to the intensive care units of the Affiliated Hospital of Xuzhou Medical University and obtained return of spontaneous circulation for more than 24 hours between September 2021 and October 2022. Serum samples obtained at the 24-hour after CA were utilized to measure the levels of glycocalyx markers, including heparan sulfate (HS), hyaluronic acid (HA), and syndecan-1 (Sdc-1). Patients were allocated into good function (CPC1-2) and poor function (CPC3-5) groups on the basis of cerebral performance category (CPC) at 30 days post-CA. Logistic regression analysis was used to determine the association between serum glycocalyx markers and neurological outcomes. Patients were regrouped in light of 30-d mortality and Cox regression analysis was used to determine the association between serum glycocalyx markers and 30-d mortality. Results: A total of 71 patients were included in the study, including 31 (43.7%) females and 40 (56.3%) males, with an average age of (59.0±17.0) years. The poor function group (n=49) demonstrated significantly elevated levels of HS and HA when compared to the good function group (n=22) [HS: 2 461.0(1 623.0, 5 492.0) μg/L vs 1 492.0 (914.0, 2 550.0) μg/L, P=0.008; HA: 124.0(97.0, 365.0)μg/L vs 337.0(135.0, 1 421.0) μg/L, P=0.033]. Adjusted logistic regression analysis revealed that HS was independently associated with poor neurological outcome [odds ratio (OR)=0.389, 95% confidence interval (CI): 0.182-0.828, P=0.014]. In the 30-day mortality analysis, the death group (n=32) exhibited significantly higher levels of HS and HA when compared to the survival group (n=39) [HS: 1 880.0(1 011.0, 3 554.0) μg/L vs 2 500.0(1 726.0, 6 276.0) μg/L, P=0.027; HA: 162.0(99.0, 537.0) μg/L vs 813.0(148.0, 1 531.0) μg/L, P=0.025]. Adjusted Cox regression analysis indicated that elevated levels of HS and HA were independent risk factors (HS: HR=1.697, 95%CI: 1.126-2.557, P=0.011; HA: HR=1.336, 95%CI: 1.047-1.705, P=0.020) for 30-day mortality. Conclusions: High level of serum HS in 24 hours after CA may serve as a potential predictive marker for both neurological function and 30-day mortality. However, high level of serum HA appears to primarily predict 30-day mortality. Sdc-1 does not seem to contribute to outcome prediction.
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Affiliation(s)
- D He
- Emergency Medicine Department, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, China
| | - C L Su
- Emergency Medicine Department, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, China
| | - T Xue
- Emergency Medicine Department, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, China
| | - J H Wang
- Emergency Medicine Department, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, China
| | - K Chen
- Emergency Medicine Department, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, China
| | - N J Zhao
- Emergency Medicine Department, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, China
| | - S Q Hu
- Emergency Medicine Department, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, China
| | - R Hua
- Emergency Medicine Department, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, China
| | - T Xu
- Emergency Medicine Department, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, China
| | - X L Yan
- Emergency Medicine Department, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221000, China
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Zou Y, Yan XL, Flores RM, Zhang LY, Yang SP, Fan LY, Deng T, Deng XJ, Ye DQ. Source apportionment and ozone formation mechanism of VOCs considering photochemical loss in Guangzhou, China. Sci Total Environ 2023; 903:166191. [PMID: 37567293 DOI: 10.1016/j.scitotenv.2023.166191] [Citation(s) in RCA: 2] [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] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 08/07/2023] [Accepted: 08/08/2023] [Indexed: 08/13/2023]
Abstract
Understanding the sources and impact of volatile organic compounds (VOCs) on ozone formation is challenging when the traditional method does not account for their photochemical loss. In this study, online monitoring of 56 VOCs was carried out in summer and autumn during high ozone pollution episodes. The photochemical age method was used to evaluate the atmospheric chemical loss of VOCs and to analyze the effects on characteristics, sources, and ozone formation of VOC components. The initial concentrations during daytime were 5.12 ppbv and 4.49 ppbv higher than the observed concentrations in the summer and autumn, respectively. The positive matrix factorization (PMF) model identified 5 major emission sources. However, the omission of the chemical loss of VOCs led to underestimating the contributions of sources associated with highly reactive VOC components, such as those produced by biogenic emissions and solvent usage. Conversely it resulted in overestimating the contributions from VOC components with lower chemical activity such as liquefied petroleum gas (LPG) usage, vehicle emissions, and gasoline evaporation. Furthermore, the estimation of ozone formation may be underestimated when the atmospheric photochemical loss is not taken into account. The ozone formation potential (OFP) method and propylene-equivalent concentration method both underestimated ozone formation by 53.24 ppbv and 47.25 ppbc, respectively, in the summer, and by 40.34 ppbv and 26.37 ppbc, respectively, in the autumn. The determination of the ozone formation regime based on VOC chemical loss was more acceptable. In the summer, the ozone formation regime changed from the VOC-limited regime to the VOC-NOx transition regime, while in the autumn, the ozone formation regime changed from the strong VOC-limited regime to the weak VOC-limited regime. To obtain more thorough and precise conclusions, further monitoring and analysis studies will be conducted in the near future on a wider variety of VOC species such as oxygenated VOCs (OVOCs).
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Affiliation(s)
- Y Zou
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China; Institute of Tropical and Marine Meteorology, China Meteorological Administration (CMA), Guangzhou 510640, China
| | - X L Yan
- State Key Laboratory of Severe Weather & Institute of Tibetan Plateau Meteorology, Chinese Academy of Meteorological Sciences, Beijing, China
| | - R M Flores
- Marmara University, Department of Environmental Engineering, Istanbul, Turkey
| | - L Y Zhang
- Institute of Tropical and Marine Meteorology, China Meteorological Administration (CMA), Guangzhou 510640, China
| | - S P Yang
- Institute of Tropical and Marine Meteorology, China Meteorological Administration (CMA), Guangzhou 510640, China
| | - L Y Fan
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China
| | - T Deng
- Institute of Tropical and Marine Meteorology, China Meteorological Administration (CMA), Guangzhou 510640, China
| | - X J Deng
- Institute of Tropical and Marine Meteorology, China Meteorological Administration (CMA), Guangzhou 510640, China
| | - D Q Ye
- School of Environment and Energy, South China University of Technology, Guangzhou 510006, China.
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Wang M, Zhang YH, Zhou X, Zhou XH, Xu HS, Liu ML, Li JG, Niu YF, Huang WJ, Yuan Q, Zhang S, Xu FR, Litvinov YA, Blaum K, Meisel Z, Casten RF, Cakirli RB, Chen RJ, Deng HY, Fu CY, Ge WW, Li HF, Liao T, Litvinov SA, Shuai P, Shi JY, Song YN, Sun MZ, Wang Q, Xing YM, Xu X, Yan XL, Yang JC, Yuan YJ, Zeng Q, Zhang M. Mass Measurement of Upper fp-Shell N=Z-2 and N=Z-1 Nuclei and the Importance of Three-Nucleon Force along the N=Z Line. Phys Rev Lett 2023; 130:192501. [PMID: 37243656 DOI: 10.1103/physrevlett.130.192501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 03/01/2023] [Accepted: 03/17/2023] [Indexed: 05/29/2023]
Abstract
Using a novel method of isochronous mass spectrometry, the masses of ^{62}Ge, ^{64}As, ^{66}Se, and ^{70}Kr are measured for the first time, and the masses of ^{58}Zn, ^{61}Ga, ^{63}Ge, ^{65}As, ^{67}Se, ^{71}Kr, and ^{75}Sr are redetermined with improved accuracy. The new masses allow us to derive residual proton-neutron interactions (δV_{pn}) in the N=Z nuclei, which are found to decrease (increase) with increasing mass A for even-even (odd-odd) nuclei beyond Z=28. This bifurcation of δV_{pn} cannot be reproduced by the available mass models, nor is it consistent with expectations of a pseudo-SU(4) symmetry restoration in the fp shell. We performed ab initio calculations with a chiral three-nucleon force (3NF) included, which indicate the enhancement of the T=1 pn pairing over the T=0 pn pairing in this mass region, leading to the opposite evolving trends of δV_{pn} in even-even and odd-odd nuclei.
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Affiliation(s)
- M Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Y H Zhang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - X Zhou
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - X H Zhou
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - H S Xu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - M L Liu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - J G Li
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Y F Niu
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
- Frontiers Science Center for Rare isotope, Lanzhou University, Lanzhou 730000, China
| | - W J Huang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou, 516007, China
| | - Q Yuan
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, People's Republic of China
| | - S Zhang
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, People's Republic of China
| | - F R Xu
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, People's Republic of China
| | - Yu A Litvinov
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, 64291 Darmstadt, Germany
| | - K Blaum
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - Z Meisel
- Institute of Nuclear and Particle Physics, Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, USA
| | - R F Casten
- Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06520-8124, USA
| | - R B Cakirli
- Department of Physics, Istanbul University, Istanbul 34134, Turkey
| | - R J Chen
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, 64291 Darmstadt, Germany
| | - H Y Deng
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - C Y Fu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - W W Ge
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - H F Li
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - T Liao
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - S A Litvinov
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, 64291 Darmstadt, Germany
| | - P Shuai
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - J Y Shi
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Y N Song
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - M Z Sun
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Q Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Y M Xing
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - X Xu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - X L Yan
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - J C Yang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Y J Yuan
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Q Zeng
- School of Nuclear Science and Engineering, East China University of Technology, Nanchang 330013, China
| | - M Zhang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
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5
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Xu F, Bian Y, Zhang GQ, Gao LY, Liu YF, Liu TX, Li G, Song RX, Su LJ, Zhou YJ, Cui JY, Yan XL, Guo FM, Zhang HY, Li QH, Zhao M, Ma LK, You BA, Wang G, Kong L, Ma JL, Zhou XF, Chang ZL, Tang ZY, Yu DY, Cheng K, Xue L, Li X, Pang JJ, Wang JL, Zhang HT, Yu XZ, Chen YG. [Safety and efficacy of the early administration of levosimendan in patients with acute non-ST-segment elevation myocardial infarction and elevated NT-proBNP levels: An Early Management Strategy of Acute Heart Failure (EMS-AHF)]. Zhonghua Nei Ke Za Zhi 2023; 62:374-383. [PMID: 37032132 DOI: 10.3760/cma.j.cn112138-20220420-00284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
Abstract
Objectives: To investigated the safety and efficacy of treating patients with acute non-ST-segment elevation myocardial infarction (NSTEMI) and elevated levels of N-terminal pro-hormone B-type natriuretic peptide (NT-proBNP) with levosimendan within 24 hours of first medical contact (FMC). Methods: This multicenter, open-label, block-randomized controlled trial (NCT03189901) investigated the safety and efficacy of levosimendan as an early management strategy of acute heart failure (EMS-AHF) for patients with NSTEMI and high NT-proBNP levels. This study included 255 patients with NSTEMI and elevated NT-proBNP levels, including 142 males and 113 females with a median age of 65 (58-70) years, and were admitted in the emergency or outpatient departments at 14 medical centers in China between October 2017 and October 2021. The patients were randomly divided into a levosimendan group (n=129) and a control group (n=126). The primary outcome measure was NT-proBNP levels on day 3 of treatment and changes in the NT-proBNP levels from baseline on day 5 after randomization. The secondary outcome measures included the proportion of patients with more than 30% reduction in NT-proBNP levels from baseline, major adverse cardiovascular events (MACE) during hospitalization and at 6 months after hospitalization, safety during the treatment, and health economics indices. The measurement data parameters between groups were compared using the t-test or the non-parametric test. The count data parameters were compared between groups using the χ² test. Results: On day 3, the NT-proBNP levels in the levosimendan group were lower than the control group but were statistically insignificant [866 (455, 1 960) vs. 1 118 (459, 2 417) ng/L, Z=-1.25,P=0.21]. However, on day 5, changes in the NT-proBNP levels from baseline in the levosimendan group were significantly higher than the control group [67.6% (33.8%,82.5%)vs.54.8% (7.3%,77.9%), Z=-2.14, P=0.03]. There were no significant differences in the proportion of patients with more than 30% reduction in the NT-proBNP levels on day 5 between the levosimendan and the control groups [77.5% (100/129) vs. 69.0% (87/126), χ²=2.34, P=0.13]. Furthermore, incidences of MACE did not show any significant differences between the two groups during hospitalization [4.7% (6/129) vs. 7.1% (9/126), χ²=0.72, P=0.40] and at 6 months [14.7% (19/129) vs. 12.7% (16/126), χ²=0.22, P=0.64]. Four cardiac deaths were reported in the control group during hospitalization [0 (0/129) vs. 3.2% (4/126), P=0.06]. However, 6-month survival rates were comparable between the two groups (log-rank test, P=0.18). Moreover, adverse events or serious adverse events such as shock, ventricular fibrillation, and ventricular tachycardia were not reported in both the groups during levosimendan treatment (days 0-1). The total cost of hospitalization [34 591.00(15 527.46,59 324.80) vs. 37 144.65(16 066.90,63 919.00)yuan, Z=-0.26, P=0.80] and the total length of hospitalization [9 (8, 12) vs. 10 (7, 13) days, Z=0.72, P=0.72] were lower for patients in the levosimendan group compared to those in the control group, but did not show statistically significant differences. Conclusions: Early administration of levosimendan reduced NT-proBNP levels in NSTEMI patients with elevated NT-proBNP and did not increase the total cost and length of hospitalization, but did not significantly improve MACE during hospitalization or at 6 months.
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Affiliation(s)
- F Xu
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Acute Heart Failure Unit (AHFU), Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Jinan 250012, China
| | - Y Bian
- Department of Emergency Medicine, Cheeloo College of Medicine, Shandong University, Jinan 250012, China
| | - G Q Zhang
- Department of Emergency, China-Japan Friendship Hospital, Beijing 100029, China
| | - L Y Gao
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Acute Heart Failure Unit (AHFU), Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Jinan 250012, China
| | - Y F Liu
- Department of Emergency, Zibo Central Hospital, Zibo 255036, China
| | - T X Liu
- Department of Emergency, Weifang People's Hospital, Weifang 261041, China
| | - G Li
- Department of Emergency, China-Japan Friendship Hospital, Beijing 100029, China
| | - R X Song
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Acute Heart Failure Unit (AHFU), Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Jinan 250012, China
| | - L J Su
- Department of Emergency, Zibo Central Hospital, Zibo 255036, China
| | - Y J Zhou
- Department of Emergency, Weifang People's Hospital, Weifang 261041, China
| | - J Y Cui
- Department of Cardiology, Binzhou People's Hospital, Binzhou 256600, China
| | - X L Yan
- Emergency Medicine Department, the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China
| | - F M Guo
- Department of Cardiology, Yantaishan Hospital, Yantai 264003,China
| | - H Y Zhang
- Department of Cardiology, the Central Hospital of Taian, Taian 271000, China
| | - Q H Li
- Department of Cardiology, Shenli Oilfield Central Hospital, Dongying 257000, China
| | - M Zhao
- Department of Emergency Medicine, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - L K Ma
- Department of Cardiology, the First Affiliated Hospital of USTC (Anhui Provincial Hospital), Hefei 230001, China
| | - B A You
- Department of Cardiology, Qilu Hospital of Shandong University (Qingdao), Qingdao 266031, China
| | - G Wang
- Department of Emergency Medicine, Qilu Hospital of Shandong University (Qingdao), Qingdao 266031, China
| | - L Kong
- Department of Emergency Center, Affiliated Hospital, Shandong University of Traditional Chinese Medicine, Jinan 250011, China
| | - J L Ma
- Department of Emergency Center, Affiliated Hospital, Shandong University of Traditional Chinese Medicine, Jinan 250011, China
| | - X F Zhou
- Department of Cardiology, Weihai Municipal Hospital, Weihai 264200, China
| | - Z L Chang
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Acute Heart Failure Unit (AHFU), Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Jinan 250012, China
| | - Z Y Tang
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Acute Heart Failure Unit (AHFU), Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Jinan 250012, China
| | - D Y Yu
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Acute Heart Failure Unit (AHFU), Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Jinan 250012, China
| | - K Cheng
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Acute Heart Failure Unit (AHFU), Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Jinan 250012, China
| | - L Xue
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Acute Heart Failure Unit (AHFU), Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Jinan 250012, China
| | - X Li
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Acute Heart Failure Unit (AHFU), Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Jinan 250012, China
| | - J J Pang
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Acute Heart Failure Unit (AHFU), Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Jinan 250012, China
| | - J L Wang
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Acute Heart Failure Unit (AHFU), Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Jinan 250012, China
| | - H T Zhang
- Department of Surgical Intensive Care Unit, Fuwai Hospital, National Center for Cardiovascular Diseases, Beijing 100037, China
| | - X Z Yu
- Department of Emergency, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, Beijing 100730, China
| | - Y G Chen
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Acute Heart Failure Unit (AHFU), Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Jinan 250012, China
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Shen HX, Liu JZ, Yan XQ, Yang HN, Hu SQ, Yan XL, Xu T, El Haj AJ, Yang Y, Lü LX. Hydrostatic pressure stimulates the osteogenesis and angiogenesis of MSCs/HUVECs co-culture on porous PLGA scaffolds. Colloids Surf B Biointerfaces 2022; 213:112419. [PMID: 35227994 DOI: 10.1016/j.colsurfb.2022.112419] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 02/11/2022] [Accepted: 02/16/2022] [Indexed: 01/04/2023]
Abstract
In native bone tissue regeneration, blood vessels, providing oxygen and nutrition for tissues, can promote the regeneration of bone and accelerate the repair of a defected area. In this study, Poly(D, L-lactic-co-glycolic acid) (PLGA) inverse opal scaffolds with high pore interconnectivity were fabricated and further modified with vascular endothelial growth factor (VEGF). The rat bone marrow derived mesenchymal stem cells (rMSCs) and human umbilical vein endothelial cells (HUVECs) were co-cultured onto the scaffolds to enhance vascularization for bone tissue regeneration. Cell attachment, viability, proliferation, and morphology were detected by cell counting kit-8 (CCK-8) assay, live and dead staining and scanning electron microscopy (SEM). Hydrostatic pressure with 0-279 KPa and 1 Hz one hour per day for 7 days was applied to tissue engineered bone constructs to investigate whether the loading stimulation can promote osteogenesis and angiogenesis mutually evaluated in parallel by multiple in vitro assays and in an in vivo chicken chorioallantoic membrane (CAM) model. The results indicated that the immobilization of VEGF can improve biocompatibility of PLGA scaffolds and promote cell attachment and proliferation. The cell-scaffold constructs showed higher CD31 expression because of the angiogenic differentiation of rMSCs in hydrostatic loading culture condition in vitro. The in vivo CAM model experiment demonstrated that hydrostatic loading stimulated angiogenic differentiation of rMSCs can accelerate tubulogenesis. Furthermore, the new capillaries formed in cell-scaffold constructs were conducive to calcium deposition in vivo.
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Affiliation(s)
- Hong-Xian Shen
- The Laboratory of Emergency Medicine, School of the Secondary Clinical Medicine, Xuzhou Medical University, Xuzhou 221002, China
| | - Jing-Zhi Liu
- The Laboratory of Emergency Medicine, School of the Secondary Clinical Medicine, Xuzhou Medical University, Xuzhou 221002, China
| | - Xiao-Qing Yan
- The Laboratory of Emergency Medicine, School of the Secondary Clinical Medicine, Xuzhou Medical University, Xuzhou 221002, China
| | - Hong-Ning Yang
- The Laboratory of Emergency Medicine, School of the Secondary Clinical Medicine, Xuzhou Medical University, Xuzhou 221002, China
| | - Shu-Qun Hu
- The Laboratory of Emergency Medicine, School of the Secondary Clinical Medicine, Xuzhou Medical University, Xuzhou 221002, China
| | - Xian-Liang Yan
- The Laboratory of Emergency Medicine, School of the Secondary Clinical Medicine, Xuzhou Medical University, Xuzhou 221002, China; Emergency Medicine Department of the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China
| | - Tie Xu
- The Laboratory of Emergency Medicine, School of the Secondary Clinical Medicine, Xuzhou Medical University, Xuzhou 221002, China; Emergency Medicine Department of the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China
| | - Alicia J El Haj
- Institute of Translational Medicine, University of Birmingham, Birmingham B15 2TH, UK
| | - Ying Yang
- School of Pharmacy and Bioengineering, Keele University, Stoke-on-Trent ST4 7QB, UK.
| | - Lan-Xin Lü
- The Laboratory of Emergency Medicine, School of the Secondary Clinical Medicine, Xuzhou Medical University, Xuzhou 221002, China; Emergency Medicine Department of the Affiliated Hospital of Xuzhou Medical University, Xuzhou 221002, China.
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Wu FW, Wang LB, Li BF, Yan XL, Zi JR, Peng J, Cai X, Bao XY, Yang YM. [Prevalence of human soil-borne nematode infections in Yunnan Province: a cross-sectional study in 2015]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2021; 33:513-517. [PMID: 34791851 DOI: 10.16250/j.32.1374.2021112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
OBJECTIVE To investigate the current prevalence of human soil-borne nematode infections in Yunnan province, so as to provide the scientific evidence for formulating the soil-borne nematodiasis control strategy in the province. METHODS In 2015, a total of 20 survey sites were sampled in 10 counties (cities) of Yunnan Province using the stratified cluster random sampling method. Stool samples were collected from all local permanent residents at ages of one year and older in each survey site, and the soil-borne nematode eggs were identified using the modified Kato-Katz technique and the egg number was counted. In addition, the hookworm species was identified using the filter-paperculture method, and Enterobius vermicularis eggs were detected using the cellophane tape method in children at ages of 3 to 6 years. RESULTS A total of 5 067 residents received stool examinations, and 950 residents were detected with soil-borne nematode infections, with an overall prevalence rate of 18.75%. The prevalence of Ascaris lumbricoides, Trichuris trichura and hookworm was 7.52%, 8.47% and 9.02%, respectively. Among 446 children detected using the cellophane tape method, 5 children were detected with E. vermicularis infections. Among the 160 residents with hookworm infections, there were 139 residents with Necator americanus infections (86.88%), 16 with A. duodenale infections (10.00%) and 5 with mixed infections (3.12%). Mild A. lumbricoides (67.98%, 259/381), T. trichura (88.58%, 380/429) and hookworm infections (94.53%, 432/457) were predominant. Among the four ecological zones, the highest prevalence of human soilborne nematode infections was found in the East Tibet-South Sichuan Ecological Zone (31.79%), and among the 10 survey counties (cities), the greatest prevalence was seen in Gongshan Derung and Nu Autonomous County (50.13%), while the lowest prevalence was found in Ninglang Yi Autonomous County (0.40%). The prevalence of human soil-borne nematode infections was 5.67% (43/759), 26.67% (610/2 287) and 14.70% (297/2 021) in high-, moderate- and low-economic-level regions, respectively. There were no significant differences in the prevalence of human soil-borne nematode infections in terms of ecological regions, survey counties (cities) or economic development levels (χ2 = 342.20, 814.60 and 201.34, all P < 0.05). There was no significantdifference in the prevalence of human soil-borne nematode infections between male (18.21%, 441/2 422) and female residents (19.24%, 509/2 645) (χ2 = 0.89, P > 0.05), and soil-borne nematode infections were detected in residents at all age groups, with the greatest prevalence found in residents at ages of 1 to 9 years (25.88%). In addition, the highest prevalence of soil-borne nematode infections was seen in residents with the Dulong Ethnic Minority (82.09%), in preschool children (25.06%) and in illiterate residents (24.80%), and there was no age-, ethnicity-, occupation- or education level-specific prevalence of soil-borne nematode infections detected (χ2 = 46.50, 1 016.96, 36.33 and 52.43, all P < 0.05). CONCLUSIONS The prevalence of human soil-borne nematode infections remains high in Yunnan Province. The management of soil-borne nematodiasis requires to be reinforced among low-age children, farmers, old people and residents with low educations levels or ethnic groups.
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Affiliation(s)
- F W Wu
- Yunnan Institute of Parasitic Diseases, Pu'er 665000, China
| | | | - B F Li
- Yunnan Institute of Parasitic Diseases, Pu'er 665000, China
| | - X L Yan
- Yunnan Institute of Parasitic Diseases, Pu'er 665000, China
| | - J R Zi
- Yunnan Institute of Parasitic Diseases, Pu'er 665000, China
| | - J Peng
- Yunnan Institute of Parasitic Diseases, Pu'er 665000, China
| | - X Cai
- Yunnan Institute of Parasitic Diseases, Pu'er 665000, China
| | - X Y Bao
- Yunnan Institute of Parasitic Diseases, Pu'er 665000, China
| | - Y M Yang
- Yunnan Institute of Parasitic Diseases, Pu'er 665000, China
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Zhang JF, Du HJ, Yan XL, Yu LL, Yang MJ, Liu R, Gu SF, Wen LY. [Endemic situation of schistosomiasis in national surveillance sites of Zhejiang Province from 2015 to 2019]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2021; 33:195-199. [PMID: 34008368 DOI: 10.16250/j.32.1374.2020302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To analyze the endemic situation of schistosomiasis in national surveillance sites of Zhejiang Province, so as to provide the scientific evidence for formulating the new schistosomiasis surveillance program and consolidating schistosomiasis elimination achievements. METHODS A total of 54 to 55 national surveillance sites and 6 risk monitoring sites were assigned in historical endemic regions of Zhejiang Province from 2015 to 2019, where the Schistosoma japonicum infections in humans, livestock, snails and wild feces were monitored. All data pertaining to the surveillance results were descriptively analyzed. RESULTS There were 34 530 person-time local residents receiving serological screening for S. japonicum infections in national surveillance sites of Zhejiang Province from 2015 to 2019, and the seroprevalance of S. japonicum infections were 0.29% to 0.68%; however, no egg-positives were detected. During the period from 2015 to 2019, there were 62 086 person-time mobile populations receiving serological screening for S. japonicum infections in national surveillance sites of Zhejiang Province, and the seroprevalance of S. japonicum infections were 0.32% to 0.56%; additionally, there were 27 egg-positives identified, including 3 imported cases with schistosomiasis haematobia and one case with acute schistosomiasis japonica, indicating that the adjusted prevalence of Schistosoma infections were 0.01% to 0.07% among mobile populations. A total of 829 livestock were examined for S. japonicum infections, with no positives detected. There were 10.55 hm2 and 2.89 hm2 snail habitats found in national surveillance sites and risk monitoring sites of Zhejiang Province during the 5-year period, respectively; however, no S. japonicum infections were identified in snails. Moreover, a total of 305 wild feces were tested for S. japonicum infections, and no egg-positives were identified. CONCLUSIONS The schistosomiasis elimination achievement have been consolidated in Zhejiang Province; however, the risk factors of re-emerging schistosomiasis have not been completely eliminated, such as residual snails and imported schistosomiasis cases. Further surveillance and control activities of snails and the source of S. japonicum infections should be reinforced.
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Affiliation(s)
- J F Zhang
- Institute of Parasitic Diseases, Hangzhou Medical College, Hangzhou 310053, China
| | - H J Du
- Institute of Parasitic Diseases, Hangzhou Medical College, Hangzhou 310053, China
| | - X L Yan
- Institute of Parasitic Diseases, Hangzhou Medical College, Hangzhou 310053, China
| | - L L Yu
- Institute of Parasitic Diseases, Hangzhou Medical College, Hangzhou 310053, China
| | - M J Yang
- Institute of Parasitic Diseases, Hangzhou Medical College, Hangzhou 310053, China
| | - R Liu
- Institute of Parasitic Diseases, Hangzhou Medical College, Hangzhou 310053, China
| | - S F Gu
- Institute of Parasitic Diseases, Hangzhou Medical College, Hangzhou 310053, China
| | - L Y Wen
- Institute of Parasitic Diseases, Hangzhou Medical College, Hangzhou 310053, China
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Ma J, Liang SX, Yan XL, Li Q, Zhao MJ, Liu N, Li YP, Meng C. [A case of TARP syndrome caused by RBM10 gene variation]. Zhonghua Er Ke Za Zhi 2020; 58:941-944. [PMID: 33120471 DOI: 10.3760/cma.j.cn112140-20200320-00281] [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] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Affiliation(s)
- J Ma
- Department of Pulmonary Intervention, Qilu Children's Hospital of Shandong University, Jinan 250022, China
| | - S X Liang
- Department of Cardiothoracic Surgerg, Shenzhen Children's Hospital, Shenzhen 518026, China
| | - X L Yan
- Department of Pulmonary Intervention, Qilu Children's Hospital of Shandong University, Jinan 250022, China
| | - Q Li
- Department of Pulmonary Intervention, Qilu Children's Hospital of Shandong University, Jinan 250022, China
| | - M J Zhao
- Department of Pulmonary Intervention, Qilu Children's Hospital of Shandong University, Jinan 250022, China
| | - N Liu
- Department of Pulmonary Intervention, Qilu Children's Hospital of Shandong University, Jinan 250022, China
| | - Y P Li
- Department of Pulmonary Intervention, Qilu Children's Hospital of Shandong University, Jinan 250022, China
| | - C Meng
- Department of Pulmonary Intervention, Qilu Children's Hospital of Shandong University, Jinan 250022, China
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Yan XL, Liang YC, Yu HB, Xu BG, Gao Y, Liu R, Xu GQ, Wu M. [Application and efficacy of the adjustment on left ventricular electrical delay and the distance between right and left ventricular pacing polar in optimizing the left ventricular pacing polar]. Zhonghua Xin Xue Guan Bing Za Zhi 2020; 48:669-674. [PMID: 32847323 DOI: 10.3760/cma.j.cn112148-20200227-00132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the application and efficacy of left ventricular (LV) electrical delay (LVED) and the distance of right ventricular(RV) pacing polar to LV(DRLV) in optimizing LV pacing polar. Methods: Heart failure (HF) patients who implanted cardiac resynchronization therapy (CRT) device with a LV quadripolar lead from January 2014 to January 2018 at General Hospital of Northern Theater Command were enrolled in the study. Measurements of LVED and DRLV of each polar of the lead were performed in patients with HF who underwent CRT with LV quadripolar lead. The principle in turn for polar selecting used for clinical LV pacing was the pacing polar: (1)without phrenic nerve stimulation(PNS); (2)with appropriate capture threshold; (3)not located in apical; (4)with maximal LVED; (5)with maximal DRLV. The LV pacing polar was selected for CRT according to the procedure. The distribution of target veins implanted with LV quadripolar lead were calculated. The percentage of biventricular pacing at 6-month follow-up was recorded. The following indexes were compared before and 6-month after surgery, including QRS duration, LV end-systolic volume(LVESV), LV ejection fraction(LVEF), LV end-diastolic dimension(LVEDD), 6 minute walking distance(6MWD), New York Heart Association(NYHA) class. The efficacy and echocardiographic efficacy of CRT was evaluated. Results: There were twenty-nine HF patients enrolled. The mean age of enrolled patients was(61.7±7.6)years old, nineteen (66%)of them were male. There were seventeen(59%) patients diagnosed as dilated cardiomyopathy and twelve(41%) patients as ischemic cardiomyopathy. All patients were successfully implanted with LV quadripolar lead into target veins, and all four pacing sites were also in target veins. Target veins were located in lateral veins in 15 patients (52%), anterior veins in 2 patients (7%), posterior veins in 11 patients (38%), and lateral branches of great cardiac veins in 1 patient (3%). After 6-month of follow-up, the percentage of biventricular pacing was greater than 95%.There were nineteen(66%) patients optimized LV pacing polar by the largest LVED and four (14%) patients by the DRLV. Of the 29 patients, 5(17%) patients used D1 as the pacing polar, 5(17%) patients used M2 as the pacing polar, 7(24%) patients used M3 as the pacing polar, and 12(41%) patients used P4 as the pacing polar. The pacing polars (D1, M2) of traditional bipolar lead were used in 10(34%) patients, and the LV quadripolar lead specific pacing polars (M3, P4) were used in 19(66%) patients.Compared to a LV quadripolar lead, the LV pacing polar (M3, P4) selected in 19(66%) patients were not achievable with the traditional LV bipolar lead (D1, M2). Preoperative QRS duration, LVESV, LVEF, LVEDD, 6MWD and NYHA class were (171±24)ms, (231±79)ml, (28±5)%, (74±11)mm, (294±103)m, (3.2±1.0)class and the postoperative 6-month were (130±12)ms, (158±73)ml, (36±10)%, (66±12)mm, (371±86)m, (1.9±0.5)class. These indexes were significantly improved after 6 months operation(P<0.001). 97% and 83% patients were responders of CRT as assessed by 6-month efficacy and echocardiographic efficacy. Conclusion: The maximal LVED and DRLV can be used to select LV pacing polar with a high rate of CRT response rate.
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Affiliation(s)
- X L Yan
- Department of Cardiology, General Hospital of Northern Theater Command, Shenyang 110016, China
| | - Y C Liang
- Department of Cardiology, General Hospital of Northern Theater Command, Shenyang 110016, China
| | - H B Yu
- Department of Cardiology, General Hospital of Northern Theater Command, Shenyang 110016, China
| | - B G Xu
- Department of Cardiology, General Hospital of Northern Theater Command, Shenyang 110016, China
| | - Y Gao
- Department of Cardiology, General Hospital of Northern Theater Command, Shenyang 110016, China
| | - R Liu
- Department of Cardiology, General Hospital of Northern Theater Command, Shenyang 110016, China
| | - G Q Xu
- Department of Cardiology, General Hospital of Northern Theater Command, Shenyang 110016, China
| | - M Wu
- Department of Cardiology, General Hospital of Northern Theater Command, Shenyang 110016, China
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Sun Y, Cheng J, Luo Y, Yan XL, Wu ZX, He LL, Tan YR, Zhou ZH, Li QN, Zhou L, Wu RT, Lan T, Ma JY. Attenuation of a virulent swine acute diarrhea syndrome coronavirus strain via cell culture passage. Virology 2019; 538:61-70. [PMID: 31580972 PMCID: PMC7112038 DOI: 10.1016/j.virol.2019.09.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 09/16/2019] [Accepted: 09/18/2019] [Indexed: 12/21/2022]
Abstract
Swine acute diarrhea syndrome coronavirus (SADS-CoV) is a newly identified enteric alphacoronavirus that causes fatal diarrhea in newborn piglets in China. Here, we propagated a virulent strain SADS-CoV/CN/GDWT/2017 in Vero cells for up to 83 passages. Four strains of SADS-CoV/GDWT-P7, -P18, -P48 and -P83 were isolated and characterized. Sequence alignments showed that these four novel strains exhibited 16 nucleotide mutations and resultant 10 amino acid substitutions in open reading frame 1a/1b, spike, NS3a, envelope, membrane and nucleocapsid proteins. Furthermore, a 58-bp deletion in NS7a/7b was found in P48 and P83 strains, which led to the loss of NS7b and 38 amino acid changes of NS7a. Pig infection studies showed that the P7 strain caused typical watery diarrhea, while the P83 strain induced none-to-mild, delayed and transient diarrhea. This is the first report on cell adaption of a virulent SADS-CoV strain, which gives information on the potential virulence determinants of SADS-CoV.
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Affiliation(s)
- Y Sun
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - J Cheng
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Y Luo
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - X L Yan
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Z X Wu
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - L L He
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Y R Tan
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Z H Zhou
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Q N Li
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - L Zhou
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - R T Wu
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - T Lan
- College of Animal Science, South China Agricultural University, Guangzhou, China.
| | - J Y Ma
- College of Animal Science, South China Agricultural University, Guangzhou, China.
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Yan XL, Li YY, He LL, Wu JL, Tang XY, Chen GH, Mai KJ, Wu RT, Li QN, Chen YH, Sun Y, Ma JY. 12 novel atypical porcine pestivirus genomes from neonatal piglets with congenital tremors: A newly emerging branch and high prevalence in China. Virology 2019; 533:50-58. [PMID: 31103885 DOI: 10.1016/j.virol.2019.04.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [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: 12/22/2018] [Revised: 04/23/2019] [Accepted: 04/23/2019] [Indexed: 10/26/2022]
Abstract
Atypical porcine pestivirus (APPV), a newly discovered member of the genus Pestivirus, is considered to be associated with congenital tremors (CT) in piglets. From June 2016 to January 2018, 440 serum and tissue samples from CT-affected piglets in Anhui, Guangdong and Guangxi provinces were collected to detect APPV. The results showed a high level of 63.4% preference for APPV in 27 swine farms and complicated co-infection cases between APPV and other 12 swine viruses. Meanwhile, 12 novel APPV genomes were screened and identified. Results showed that complete genomes, Npro and NS5A genes of these novel 12 APPV sequences revealed 80.5%-99.8%, 78%-100% and 76.9%-99.8% nucleotide identities, respectively. Phylogenetic analyses based on sequences of full-length genomes, Npro and NS5A genes of APPV indicated three well-defined clades including a newly emerging branch in China. This study provides novel epidemiological information of APPV in China.
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Affiliation(s)
- X L Yan
- College of Animal Science, South China Agricultural University, Guangzhou, China; Key Laboratory of Animal Health Aquaculture and Environmental Control, Guangzhou, Guangdong, China
| | - Y Y Li
- College of Animal Science, South China Agricultural University, Guangzhou, China; Key Laboratory of Animal Health Aquaculture and Environmental Control, Guangzhou, Guangdong, China
| | - L L He
- College of Animal Science, South China Agricultural University, Guangzhou, China; Key Laboratory of Animal Health Aquaculture and Environmental Control, Guangzhou, Guangdong, China
| | - J L Wu
- College of Animal Science, South China Agricultural University, Guangzhou, China; Key Laboratory of Animal Health Aquaculture and Environmental Control, Guangzhou, Guangdong, China
| | - X Y Tang
- College of Animal Science, South China Agricultural University, Guangzhou, China; Key Laboratory of Animal Health Aquaculture and Environmental Control, Guangzhou, Guangdong, China
| | - G H Chen
- College of Animal Science, South China Agricultural University, Guangzhou, China; Key Laboratory of Animal Health Aquaculture and Environmental Control, Guangzhou, Guangdong, China
| | - K J Mai
- College of Animal Science, South China Agricultural University, Guangzhou, China; Key Laboratory of Animal Health Aquaculture and Environmental Control, Guangzhou, Guangdong, China
| | - R T Wu
- College of Animal Science, South China Agricultural University, Guangzhou, China; Key Laboratory of Animal Health Aquaculture and Environmental Control, Guangzhou, Guangdong, China
| | - Q N Li
- College of Animal Science, South China Agricultural University, Guangzhou, China; Key Laboratory of Animal Health Aquaculture and Environmental Control, Guangzhou, Guangdong, China
| | - Y H Chen
- College of Animal Science, South China Agricultural University, Guangzhou, China
| | - Y Sun
- College of Animal Science, South China Agricultural University, Guangzhou, China; Key Laboratory of Animal Health Aquaculture and Environmental Control, Guangzhou, Guangdong, China.
| | - J Y Ma
- College of Animal Science, South China Agricultural University, Guangzhou, China; Key Laboratory of Animal Health Aquaculture and Environmental Control, Guangzhou, Guangdong, China.
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Liu HJ, Guo XF, Hu FL, Yan CP, Cui XJ, Yan XL, Li ZG, Jia Y, Song SL. [Increased receptor activator of nuclear factor kappa B ligand expressed on B10 cells in rheumatoid arthritis]. Beijing Da Xue Xue Bao Yi Xue Ban 2018; 50:968-974. [PMID: 30562766] [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: 06/09/2023]
Abstract
OBJECTIVE To detect receptor activator of nuclear factor kappa B ligand (RANKL) expressed on B10 cells in rheumatoid arthritis (RA) and to evaluate the correlation between RANKL-producing B10 cells in RA and clinical features and laboratory parameters, trying to reveal the possible role of B10 cells in the pathogenesis of RA and the potential mechanism of impaired immunosuppressive capacities. METHODS 25 RA patients and 20 healthy volunteers were enrolled. These RA patients did not received treatment with glucocorticoids, disease-modifying anti-rheumatic drug and biologics during the recent half of a year. The levels of RANKL-producing B10 cells were measured by flow cytometry (FCM) and polymerase chain reaction (PCR). The correlation between the frequencies of RANKL-producing B10 cells in RA and clinical data, laboratory parameters were analyzed. The role of tumor necrosis factor α (TNF-α) and interleukin 1β (IL-1β) in inducing RANKL expression in B10 cells was evaluated by in vitro stimulation assay. Independent samples t test, Pearson and Spearman correlation were used for statistical analysis. RESULTS B10 cells were capable of producing RANKL at a low level in health controls. The frequencies of RANKL-producing B10 cells were markedly higher in RA patients than in health controls (3.65%±1.59% vs. 2.25%±0.68%, P<0.01). The frequencies of these cells correlated positively with RA tender joint counts, swollen joint counts and disease activity score in 28 joints (DAS28) (r=0.479, P=0.035; r=0.519, P=0.008; r=0.526, P=0.019). However, no correlation was found between these cells and RA patient age, disease duration, or the levels of erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), rheumatoid factor (RF) and anti-citrullinated peptide antibody (ACPA). After in vitro stimulation by TNF-α, but not IL-1β, B10 cells isolated from healthy donors demonstrated fundamentally upregulated expression of RANKL. CONCLUSION Our studies showed the frequencies of RANKL-producing B10 cells were markedly higher in RA patients, and their frequencies were positively correlated with RA tender joint counts, swollen joint counts and DAS28. These findings suggested that B10 cells might be involved in RA bone destruction.
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Affiliation(s)
- H J Liu
- Department of Rheumatology and Immunology,the People's Hospital of China Three Gorges University,Yichang 443000, Hubei, China
| | - X F Guo
- Department of Rheumatology and Immunology,the People's Hospital of China Three Gorges University,Yichang 443000, Hubei, China
| | - F L Hu
- Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing 100044, China
| | - C P Yan
- Department of Rheumatology and Immunology,the People's Hospital of China Three Gorges University,Yichang 443000, Hubei, China
| | - X J Cui
- Department of Rheumatology and Immunology,the People's Hospital of China Three Gorges University,Yichang 443000, Hubei, China
| | - X L Yan
- Department of Rheumatology and Immunology,the People's Hospital of China Three Gorges University,Yichang 443000, Hubei, China
| | - Z G Li
- Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing 100044, China
| | - Y Jia
- Department of Rheumatology and Immunology, Peking University People's Hospital, Beijing 100044, China
| | - S L Song
- Department of Rheumatology and Immunology,the People's Hospital of China Three Gorges University,Yichang 443000, Hubei, China
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Lyu LX, Zhang XF, Deegan AJ, Liang GF, Yang HN, Hu SQ, Yan XL, Huang NP, Xu T. Comparing hydroxyapatite with osteogenic medium for the osteogenic differentiation of mesenchymal stem cells on PHBV nanofibrous scaffolds. J Biomater Sci Polym Ed 2018; 30:150-161. [PMID: 30556784 DOI: 10.1080/09205063.2018.1558485] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Having advantageous biocompatibility and osteoconductive properties known to enhance the osteogenic differentiation of mesenchymal stem cells (MSCs), hydroxyapatite (HA) is a commonly used material for bone tissue engineering. What remains unclear, however, is whether HA holds a similar potential for stimulating the osteogenic differentiation of MSCs to that of a more frequently used osteogenic-inducing medium (OIM). To that end, we used PHBV electrospun nanofibrous scaffolds to directly compare the osteogenic capacities of HA with OIM over MSCs. Through the observation of cellular morphology, the staining of osteogenic markers, and the quantitative measuring of osteogenic-related genes, as well as microRNA analyses, we not only found that HA was as capable as OIM for differentiating MSCs down an osteogenic lineage; albeit, at a significantly slower rate, but also that numerous microRNAs are involved in the osteogenic differentiation of MSCs through multiple pathways involving the inhibition of cellular proliferation and stemness, chondrogenesis and adipogenesis, and the active promotion of osteogenesis. Taken together, we have shown for the first time that PHBV electrospun nanofibrous scaffolds combined with HA have a similar osteogenic-inducing potential as OIM and may therefore be used as a viable replacement for OIM for alternative in vivo-mimicking bone tissue engineering applications.
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Affiliation(s)
- Lan-Xin Lyu
- a Emergency Center of the Affiliated Hospital of Xuzhou Medical University, Institute of Emergency Rescue Medicine, Key Laboratory of New Drugs and Clinical Application , Xuzhou Medical University , Xuzhou , China.,b State Key Laboratory of Bioelectronics , School of Biology Science and Medical Engineering, Southeast University , Nanjing , China
| | - Xiao-Feng Zhang
- b State Key Laboratory of Bioelectronics , School of Biology Science and Medical Engineering, Southeast University , Nanjing , China
| | - Anthony J Deegan
- c Department of Bioengineering , University of Washington , Seattle , WA , USA
| | - Gao-Feng Liang
- d Department of Medical School, Henan University of Science and Technology , Luoyang , China
| | - Hong-Ning Yang
- a Emergency Center of the Affiliated Hospital of Xuzhou Medical University, Institute of Emergency Rescue Medicine, Key Laboratory of New Drugs and Clinical Application , Xuzhou Medical University , Xuzhou , China
| | - Shu-Qun Hu
- a Emergency Center of the Affiliated Hospital of Xuzhou Medical University, Institute of Emergency Rescue Medicine, Key Laboratory of New Drugs and Clinical Application , Xuzhou Medical University , Xuzhou , China
| | - Xian-Liang Yan
- a Emergency Center of the Affiliated Hospital of Xuzhou Medical University, Institute of Emergency Rescue Medicine, Key Laboratory of New Drugs and Clinical Application , Xuzhou Medical University , Xuzhou , China
| | - Ning-Ping Huang
- b State Key Laboratory of Bioelectronics , School of Biology Science and Medical Engineering, Southeast University , Nanjing , China
| | - Tie Xu
- a Emergency Center of the Affiliated Hospital of Xuzhou Medical University, Institute of Emergency Rescue Medicine, Key Laboratory of New Drugs and Clinical Application , Xuzhou Medical University , Xuzhou , China.,e Emergency Center , Nanjing Jiangning Hospital , Nanjing , China
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15
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Gao Y, Liang YC, Yu HB, Yan XL, Xu BG, Liu R, Wang N, Xu GQ, Wang ZL. [Heart rate control in chronic heart failure patients received cardiovascular implantable electronic device therapy: effects of optimized medication]. Zhonghua Xin Xue Guan Bing Za Zhi 2018; 46:173-177. [PMID: 29562420 DOI: 10.3760/cma.j.issn.0253-3758.2018.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the heart rate control situation of chronic heart failure (CHF) patients who received cardiovascular implantable electronic device (CIED) therapy, and to assess the heart rate control efficacy by optimized medication adjustment. Methods: We performed a perspective study in heart failure with reduced left ventricular ejection fraction (HFrEF) patients who received CIED according to guideline recommendations, patients were enrolled from January 2012 to January 2017. Resting heart rate (RHR) recorded by electrocardiogram after 10 minutes' rest and medication usage within 1 month were recorded at baseline. RHR less than 70 beats per minute (bpm) was regarded as well controlled. β-receptor blockers and (or) ivabradine would be added in patients whose RHR were over 70 bpm. RHR after optimized medication adjustment was recorded during follow-up period. Results: One hundred and fifty patients were included in this study with average RHR (80.6±11.9) bpm. RHR was<70 bpm in 27.3% (41/150) patients at baseline and β-receptor blockers was underused in 80.7% patients (88/109) whose RHR was>70 bpm. The overall RHR decreased to (73.1±10.4) bpm and percent of patients with RHR<70 bpm increased to 70.0% (105/150) after up-titration of β-receptor blockers compared to baseline (χ2=52.958, P<0.001). Ivabradine was added in the rest 45 patients and RHR was<70 bpm in 43 out of 45 patients after ivabradine use. The overall RHR decreased to (67.1±2.7) bpm and percent of RHR<70 bpm significantly increased to 98.7% (148/150) (χ2=44.504, P<0.001 vs. up-titration of β-receptor blockers only). Conclusion: RHR in CHF patients who received CIED therapy is not ideally controlled in this patient cohort, individual up-titration ofβ-receptor blockers and ivabradine use may help to optimize RHR in these patients.
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Affiliation(s)
- Y Gao
- Department of Cardiology, General Hospital of Shenyang Military Region, Shenyang 110016, China
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16
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Wang LZ, Wang WJ, Xiong YF, Xu S, Wang SS, Tu Y, Wang ZY, Yan XL, Mei JH, Wang CL. [Expression and mechanism of Twist2 in glioma]. Zhonghua Bing Li Xue Za Zhi 2017; 46:832-836. [PMID: 29224276 DOI: 10.3760/cma.j.issn.0529-5807.2017.12.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the significance of Twist2 in glioma and whether it is involved in the malignant transformation of glioma by epithelial-mesenchymal transition (EMT). Methods: Using immunohistochemical method detected the expression level of Twist2 in 60 cases of gliomas (including WHO grades Ⅱ, Ⅲ and Ⅳ, each for 20 cases) and 20 cases of non-tumor brain tissues. Real-time fluorescence quantitative PCR and Western blot were used to detect the expression level of Twist2 mRNA and protein in 61 cases of fresh glioma tissue (WHO grade Ⅱ 16 cases, Ⅲ 21 cases, Ⅳ 24 cases) and 12 cases of adjacent tissues, and the expression levels of E-cadherin, N-cadherin and vimentin were also investigated in fresh glioma tissue. Results: Immunohistochemistry results showed that the percentages of Twist2 expression in glioma was 90%(54/60) compared with 30%(6/20) in non-tumor brain tissues(P<0.01). The percentages of Twist2 expression were 75% (15/20), 95% (19/20), and 100% (20/20) in the WHO gradesⅡ, Ⅲ and Ⅳ gliomas, respectively. WHO grades Ⅳ and Ⅲ were significantly higher than that of WHO grade Ⅱ (P<0.01). There was no significant difference between WHO grade Ⅳand WHO Ⅲ glioma (P>0.05). Real-time fluorescence quantitative PCR and Western blot showed that the expression level of Twist 2 in gliomas was significantly higher than that in para-cancerous tissues (P<0.01), and those in WHO grades Ⅳ and Ⅲ gliomas were significantly higher than that in WHO grade Ⅱ glioma (P<0.01). There was no significant difference between WHO grade Ⅳand grade Ⅲ glioma (P>0.05). Detection of key protein expression in EMT by Western blot displayed that the expression of E-cadherin was negatively associated with Twist2 in glioma (r=-0.972, P<0.01). The expression of N-cadherin and vimentin was positively associated with Twist2 in glioma(r=0.971, P<0.01; r=0.968, P<0.01). Conclusions: The expression of Twist2 in human glioma is positively correlated with the malignant grade of glioma, which may be involved in the malignant progression of glioma by EMT.
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Affiliation(s)
- L Z Wang
- Department of Pathology, the First Affiliated Hospital of Nanchang University, Nanchang 330006, China
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Xu X, Zhang P, Shuai P, Chen RJ, Yan XL, Zhang YH, Wang M, Litvinov YA, Xu HS, Bao T, Chen XC, Chen H, Fu CY, Kubono S, Lam YH, Liu DW, Mao RS, Ma XW, Sun MZ, Tu XL, Xing YM, Yang JC, Yuan YJ, Zeng Q, Zhou X, Zhou XH, Zhan WL, Litvinov S, Blaum K, Audi G, Uesaka T, Yamaguchi Y, Yamaguchi T, Ozawa A, Sun BH, Sun Y, Dai AC, Xu FR. Identification of the Lowest T=2, J^{π}=0^{+} Isobaric Analog State in ^{52}Co and Its Impact on the Understanding of β-Decay Properties of ^{52}Ni. Phys Rev Lett 2016; 117:182503. [PMID: 27835000 DOI: 10.1103/physrevlett.117.182503] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Indexed: 06/06/2023]
Abstract
Masses of ^{52g,52m}Co were measured for the first time with an accuracy of ∼10 keV, an unprecedented precision reached for short-lived nuclei in the isochronous mass spectrometry. Combining our results with the previous β-γ measurements of ^{52}Ni, the T=2, J^{π}=0^{+} isobaric analog state (IAS) in ^{52}Co was newly assigned, questioning the conventional identification of IASs from the β-delayed proton emissions. Using our energy of the IAS in ^{52}Co, the masses of the T=2 multiplet fit well into the isobaric multiplet mass equation. We find that the IAS in ^{52}Co decays predominantly via γ transitions while the proton emission is negligibly small. According to our large-scale shell model calculations, this phenomenon has been interpreted to be due to very low isospin mixing in the IAS.
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Affiliation(s)
- X Xu
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - P Zhang
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- Graduate University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - P Shuai
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - R J Chen
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - X L Yan
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Y H Zhang
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - M Wang
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Yu A Litvinov
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, 64291 Darmstadt, Germany
| | - H S Xu
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - T Bao
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - X C Chen
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, 64291 Darmstadt, Germany
| | - H Chen
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- Graduate University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - C Y Fu
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- Graduate University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - S Kubono
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Y H Lam
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - D W Liu
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- Graduate University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - R S Mao
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - X W Ma
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - M Z Sun
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- Graduate University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - X L Tu
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - Y M Xing
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- Graduate University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - J C Yang
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Y J Yuan
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - Q Zeng
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- Research Center for Hadron Physics, National Laboratory of Heavy Ion Accelerator Facility in Lanzhou and University of Science and Technology of China, Hefei 230026, People's Republic of China
| | - X Zhou
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- Graduate University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - X H Zhou
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - W L Zhan
- Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
| | - S Litvinov
- GSI Helmholtzzentrum für Schwerionenforschung, Planckstraße 1, 64291 Darmstadt, Germany
| | - K Blaum
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - G Audi
- CSNSM, Univ Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France
| | - T Uesaka
- RIKEN Nishina Center, RIKEN, Saitama 351-0198, Japan
| | - Y Yamaguchi
- RIKEN Nishina Center, RIKEN, Saitama 351-0198, Japan
| | - T Yamaguchi
- Department of Physics, Saitama University, Saitama 338-8570, Japan
| | - A Ozawa
- Insititute of Physics, University of Tsukuba, Ibaraki 305-8571, Japan
| | - B H Sun
- School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, People's Republic of China
| | - Y Sun
- Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - A C Dai
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, People's Republic of China
| | - F R Xu
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, People's Republic of China
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Ye Y, Peng YR, Hu SQ, Yan XL, Chen J, Xu T. In Vitro Differentiation of Bone Marrow Mesenchymal Stem Cells into Neuron-Like Cells by Cerebrospinal Fluid Improves Motor Function of Middle Cerebral Artery Occlusion Rats. Front Neurol 2016; 7:183. [PMID: 27833584 PMCID: PMC5081354 DOI: 10.3389/fneur.2016.00183] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 10/10/2016] [Indexed: 11/13/2022] Open
Abstract
Bone marrow mesenchymal stem cells (BMSCs) represent a promising tool for stem cell-based therapies. However, the majority of BMSC transplants only allow for limited recovery of the lost functions. We previously found that human cerebrospinal fluid (hCSF) is more potent than growth factors in differentiating human BMSCs into neuron-like cells in vitro. In this study, we studied the effect of transplantation of rat BMSC-derived neuron-like cells (BMSC-Ns) induced by hCSF into rat brain with middle cerebral artery occlusion (MCAO). The survival and differentiation of the transplanted cells were determined using immunofluorescence staining of bromodeoxyuridine. The recovery of neurological function were observed by the modified neurological severity score (modified NSS) at 4, 15, and 32 days after cell transplantation, HE staining for determination of the infarct volume at day 32 after cell transplantation. Transplantation of BMSC-Ns or BMSCs significantly improved indexes of neurological function and reduced infarct size in rats previously subjected to MCAO compared with those in the control group. Remarkably, 32 days after transplantation, rats treated with BMSC-Ns presented a smaller infarct size, higher number of neuron-specific, enolase-positive, and BrdU-positive cells, and improved neurological function compared with BMSC group. Our results demonstrate that transplantation of hCSF-treated BMSC-Ns significantly improves neurological function and reduces infarct size in rats subjected to MCAO. This study may pave a new avenue for the treatment of MCAO.
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Affiliation(s)
- Ying Ye
- Jiangsu Province Key Laboratory of Anesthesiology, Institute of Emergency Rescue Medicine, Xuzhou Medical University, Xuzhou, Jiangsu, China; Emergency Center, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Yi-Ran Peng
- Department of Clinical Medicine, Xuzhou Medical University , Xuzhou , China
| | - Shu-Qun Hu
- Jiangsu Province Key Laboratory of Anesthesiology, Institute of Emergency Rescue Medicine, Xuzhou Medical University , Xuzhou, Jiangsu , China
| | - Xian-Liang Yan
- Jiangsu Province Key Laboratory of Anesthesiology, Institute of Emergency Rescue Medicine, Xuzhou Medical University, Xuzhou, Jiangsu, China; Emergency Center, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Juan Chen
- Jiangsu Province Key Laboratory of Anesthesiology, Institute of Emergency Rescue Medicine, Xuzhou Medical University , Xuzhou, Jiangsu , China
| | - Tie Xu
- Jiangsu Province Key Laboratory of Anesthesiology, Institute of Emergency Rescue Medicine, Xuzhou Medical University, Xuzhou, Jiangsu, China; Emergency Center, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
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Yang XB, Yan XL, Zhai JM, Ouyang SL, Chen GG, Liao LB, Huang YH, Tian SZ, Mao M, Ma ZE, Wang XL, Zong L, Zhang JG. [Clinical research of differences of volume of pharyngeal cavity between normal healthy subjects and patients with severe obstructive sleep apnea hypopnea syndrome]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 30:1459-1462. [PMID: 29871116 DOI: 10.13201/j.issn.1001-1781.2016.18.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Indexed: 11/12/2022]
Abstract
Objective:To investigate the differences of volume of pharyngeal cavity between normal healthy subjects and patients with severe obstructive sleep apnea hypopnea syndrome(OSAHS)before and after surgery and its application value in assessment of surgical curative effect.Method:Forty-four healthy male adults were included in normal group.Thirty-eight patients with severe OSAHS diagnosed by polysomnography were included in experimental group(OSAHS group). Volume of pharyngeal cavity, oropharynx and laryngopharynx measured by acoustic pharyngealmetry and AHI, obstructive apnea frequency and the lowest oxygen saturation recorded by PSG monitor were all obtained in normal groups and experimental groups before and 3 months after the surgery. All the data are statistically analyzed. Result:Volume of pharyngeal cavity,AHI,obstructive apnea frequency and lowest oxygen saturation of patients in experimental group were all improved after surgery compared with pre-operation(P<0.01). Conclusion: The measurement of pharyngeal cavity volume is helpful to the quantitative analysis of upper airway structure and determine the stenosis location, it is also useful to guide surgery and evaluate the curative effect of the surgery.
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Affiliation(s)
- X B Yang
- Department of Otolaryngology,the Second Affiliated Hospital of Guangzhou Medical University,Guangzhou,510260,China
| | - X L Yan
- Department of Otolaryngology,the Second Affiliated Hospital of Guangzhou Medical University,Guangzhou,510260,China
| | - J M Zhai
- Department of Otolaryngology,the Second Affiliated Hospital of Guangzhou Medical University,Guangzhou,510260,China
| | - S L Ouyang
- Department of Otolaryngology, the Third Affiliated Hospital of Guangzhou Medical University
| | - G G Chen
- Department of Otolaryngology,the Second Affiliated Hospital of Guangzhou Medical University,Guangzhou,510260,China
| | - L B Liao
- Department of Otolaryngology,the Second Affiliated Hospital of Guangzhou Medical University,Guangzhou,510260,China
| | - Y H Huang
- Department of Otolaryngology,the Second Affiliated Hospital of Guangzhou Medical University,Guangzhou,510260,China
| | - S Z Tian
- Department of Otolaryngology,the Second Affiliated Hospital of Guangzhou Medical University,Guangzhou,510260,China
| | - M Mao
- Department of Otolaryngology,the Second Affiliated Hospital of Guangzhou Medical University,Guangzhou,510260,China
| | - Z E Ma
- Department of Otolaryngology,the Second Affiliated Hospital of Guangzhou Medical University,Guangzhou,510260,China
| | - X L Wang
- Department of Otolaryngology Head and Neck Surgery,Guangdong General Hospital,Guangdong Academy of Medical Sciences Guangzhou,510080,China
| | - L Zong
- Department of Otolaryngology Head and Neck Surgery,Guangdong General Hospital,Guangdong Academy of Medical Sciences Guangzhou,510080,China
| | - J G Zhang
- Department of Otolaryngology Head and Neck Surgery,Union Hospital,Tongji Medical College,Huazhong University of Science and Technology
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Abstract
Congenital anomalous coronary sinus ostium is extremely rare. We describe a case of congenital left atrial coronary sinus ostium in a patient scheduled for ablation for atrial fibrillation. The anomalous coronary sinus ostium was found when contrast was injected during the ablation procedure and was confirmed by cardiac computed tomography.
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Affiliation(s)
- Xian-Liang Yan
- Dept. of Cardiology, Centre for Atrial Fibrillation, Beijing Anzhen Hospital, Capital Medical University and Beijing Institute of Heart, Lung, and Blood Vessel Diseases, Beijing, China
| | - Jian-Zeng Dong
- Dept. of Cardiology, Centre for Atrial Fibrillation, Beijing Anzhen Hospital, Capital Medical University and Beijing Institute of Heart, Lung, and Blood Vessel Diseases, Beijing, China
| | - Ri-Bo Tang
- Dept. of Cardiology, Centre for Atrial Fibrillation, Beijing Anzhen Hospital, Capital Medical University and Beijing Institute of Heart, Lung, and Blood Vessel Diseases, Beijing, China
| | - Chang-Sheng Ma
- Dept. of Cardiology, Centre for Atrial Fibrillation, Beijing Anzhen Hospital, Capital Medical University and Beijing Institute of Heart, Lung, and Blood Vessel Diseases, Beijing, China
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Yan XL, Lin LY, Liao XY, Zhang WB, Wen Y. Arsenic stabilization by zero-valent iron, bauxite residue, and zeolite at a contaminated site planting Panax notoginseng. Chemosphere 2013; 93:661-667. [PMID: 23871591 DOI: 10.1016/j.chemosphere.2013.05.083] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Revised: 05/16/2013] [Accepted: 05/17/2013] [Indexed: 06/02/2023]
Abstract
Panax notoginseng (Burk.) F.H. Chen, a rare traditional Chinese medicinal herb, is a widely used phytomedicine used all over the world. In recent years, the arsenic contamination of the herb and its relative products becomes a serious problem due to elevated soil As concentration. This study aimed to evaluate the effects of different types and dosages of amendments on As stabilization in soil and its uptake by P. notoginseng. Results showed that comparing to control treatment, the As concentrations of P. notoginseng declined by 49-63%, 43-61% and 52-66% in 0.25% zero-valent iron (Fe(0)), 0.5% bauxite residue, and 1% zeolite treatment, respectively; whereas the biomasses were elevated by 62-116%, 45-152% and 114-265%, respectively. The As(III) proportions of P. notoginseng increased by 8%, 9%, and 8%, and the transfer factors of As from root to shoot increased by 37%, 42% and 84% in the optimal treatments of Fe(0), bauxite residue, and zeolite. For soil As, all the three amendments could transform the non-specifically adsorbed As fraction to hydrous oxides Fe/Al fractions (by Fe(0) and red mud) or specifically adsorbed As fraction (by zeolite), therefore reduced the bioavailability of soil As. With a comprehensive consideration of stabilization efficiency, plant growth, environmental influence, and cost, Fe(0) appeared to be the best amendment, and zeolite could also be a good choice. In conclusion, this study was of significance in developing As contamination control in P. notoginseng planting areas, and even other areas for medicinal herb growing.
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Affiliation(s)
- X L Yan
- Lab of Land Contamination Assessment and Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Science (CAS), Beijing 100101, China.
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Zhang YH, Xu HS, Litvinov YA, Tu XL, Yan XL, Typel S, Blaum K, Wang M, Zhou XH, Sun Y, Brown BA, Yuan YJ, Xia JW, Yang JC, Audi G, Chen XC, Jia GB, Hu ZG, Ma XW, Mao RS, Mei B, Shuai P, Sun ZY, Wang ST, Xiao GQ, Xu X, Yamaguchi T, Yamaguchi Y, Zang YD, Zhao HW, Zhao TC, Zhang W, Zhan WL. Mass measurements of the neutron-deficient 41Ti, 45Cr, 49Fe, and 53Ni nuclides: first test of the isobaric multiplet mass equation in f p-shell nuclei. Phys Rev Lett 2012; 109:102501. [PMID: 23005283 DOI: 10.1103/physrevlett.109.102501] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Indexed: 06/01/2023]
Abstract
Isochronous mass spectrometry has been applied to neutron-deficient 58Ni projectile fragments at the HIRFL-CSR facility in Lanzhou, China. Masses of a series of short-lived T(z)=-3/2 nuclides including 41Ti, 45Cr, 49Fe, and 53Ni have been measured with a precision of 20-40 keV. The new data enable us to test for the first time the isobaric multiplet mass equation (IMME) in fp-shell nuclei. We observe that the IMME is inconsistent with the generally accepted quadratic form for the A=53, T=3/2 quartet. We perform full space shell model calculations and compare them with the new experimental results.
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Affiliation(s)
- Y H Zhang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
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Yan XL, Lin LY, Liao XY, Zhang WB. Arsenic accumulation and resistance mechanism in Panax notoginseng, a traditional rare medicinal herb. Chemosphere 2012; 87:31-6. [PMID: 22189375 DOI: 10.1016/j.chemosphere.2011.11.049] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Revised: 11/19/2011] [Accepted: 11/22/2011] [Indexed: 05/16/2023]
Abstract
Panax notoginseng, a traditional rare Chinese medicinal herb, was recently found to bring health risk to consumers, mainly because soil in its major plantation area was contaminated by arsenic (As). We investigated the effect of soil As pollution on the growth and As uptake of pot-cultured P. notoginseng, and the associated mechanisms of As stressed response. Results showed that, comparing with P. notoginseng growing in a low-As soil, the root, stem, and leaf biomasses of those growing in a high-As soil significantly reduced by 0.75, 0.09 and 0.21 g seedling(-1), respectively. Arsenic concentrations in roots, stems and leaves of the seedlings growing in high-As soil were 22, 15 and 3 times higher than those growing in low-As soil, respectively. Regardless of the soil As concentration, As existed in plants mainly as As(III), suggesting that the reduction of As(V) is a key step in As metabolism. Arsenic was distributed primarily in cell walls (51.7% for plants growing in the low-As soil, and 51.5% in the high-As soil), followed by cytoplasm supernatant, with cell organelles containing the least As. Compared with plants growing in the low-As soil, those in the high-As soil had increased superoxide dismutase and peroxidase activities in their roots, stems, and leaves, which would be associate with improving the resistance of P. notoginseng to As stress. The results suggest that there exists some special mechanisms of As-tolerance in P. notoginseng and the study is of significance in developing measures to reduce As in the herb.
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Affiliation(s)
- X L Yan
- Beijing Key Lab of Industrial Land Contamination and Remediation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Science, Beijing 100101, China.
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Yan XL, Liu YX, Yan DT, Zhu HC, Liu CG, Xu CS. The effects of Mn2+ doping on the luminescence properties of 12CaO 7Al2O:Eu2+ nanocrystal phosphor. J Nanosci Nanotechnol 2011; 11:9964-9969. [PMID: 22413331 DOI: 10.1166/jnn.2011.5292] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The long lasting blue phosphorescence (LLP) and photostimulated luminescence (PSL) after ultraviolet light irradiation at room temperature in 12CaO 7Al2O3:xEu2+, yMn2+ (x = 0, 0.001; y = 0, 0.01) prepared by the chemical co-precipitation method were observed. It was shown that novel oxide 12CaO 7Al2O3:Eu2+, Mn2+ (C12A7:Eu2+, Mn2+) with unique nanocage structure can store energy when irradiated with 365 nm photons. And photon energy can be subsequently released by exposed to 980 nm light. The codopant Mn2+ enhances the intensity of the persistent phosphorescence and PSL due to the existence of more shallow and new deeper electron traps in C12A7: Eu2+, Mn2+. A model for energy storing and recovering and the detailed mechanism of PSL are presented through comparing with the luminescence properties of the co-doped C12A7:Eu2+, Mn2+ and C12A7:Eu2+.
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Affiliation(s)
- X L Yan
- Center for Advanced Opto-Electronic Functional Materials Research, School of Physics, Northeast Normal University, Changchun 130024, People's Republic of China
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Tu XL, Xu HS, Wang M, Zhang YH, Litvinov YA, Sun Y, Schatz H, Zhou XH, Yuan YJ, Xia JW, Audi G, Blaum K, Du CM, Geng P, Hu ZG, Huang WX, Jin SL, Liu LX, Liu Y, Ma X, Mao RS, Mei B, Shuai P, Sun ZY, Suzuki H, Tang SW, Wang JS, Wang ST, Xiao GQ, Xu X, Yamaguchi T, Yamaguchi Y, Yan XL, Yang JC, Ye RP, Zang YD, Zhao HW, Zhao TC, Zhang XY, Zhan WL. Direct mass measurements of short-lived A=2Z-1 nuclides (63)Ge, (65)As, (67)Se, and (71)Kr and their impact on nucleosynthesis in the rp process. Phys Rev Lett 2011; 106:112501. [PMID: 21469858 DOI: 10.1103/physrevlett.106.112501] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2011] [Indexed: 05/30/2023]
Abstract
Mass excesses of short-lived A=2Z-1 nuclei (63)Ge, (65)As, (67)Se, and (71)Kr have been directly measured to be -46,921(37), -46,937(85), -46,580(67), and -46,320(141) keV, respectively. The deduced proton separation energy of -90(85) keV for (65)As shows that this nucleus is only slightly proton unbound. X-ray burst model calculations with the new mass excess of (65)As suggest that the majority of the reaction flow passes through (64)Ge via proton capture, indicating that (64)Ge is not a significant rp-process waiting point.
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Affiliation(s)
- X L Tu
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
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Abstract
Chitosan-alginate polyelectrolyte complex (CS-AL PEC) is water insoluble and more effective in limiting the release of encapsulated materials compared to chitosan or alginate. Coherent CS-AL PEC films have been prepared in our laboratory by casting and drying suspensions of chitosan-alginate coacervates. The objective of this study was to evaluate the properties of the CS-AL PEC films prepared with chitosans of different molecular weights. Films prepared with low-molecular-weight chitosan (Mv 1.30 x 10(5)) were twice as thin and transparent, as well as 55% less permeable to water vapor, compared to films prepared with high-molecular-weight chitosan (Mv 10.0 x 10(5)). It may be inferred that the low-molecular-weight chitosan reacted more completely with the sodium alginate (M(v) 1.04 x 10(5)) than chitosan of higher molecular weight. A threshold molecular weight may be required, because chitosans of Mv 10.0 x 10(5) and 5.33 x 10(5) yielded films with similar physical properties. The PEC films exhibited different surface properties from the parent films, and contained a higher degree of chain alignment with the possible formation of new crystal types. The PEC films exhibited good in vitro biocompatibility with mouse and human fibroblasts, suggesting that they can be further explored for biomedical applications.
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Affiliation(s)
- X L Yan
- Department of Pharmacy, National University of Singapore, 10, Lower Kent Ridge Road, Singapore 119260
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Xiong XW, Diao LD, Yan XL. [Immune response of rubella vaccine in the populations with different age groups]. Zhonghua Liu Xing Bing Xue Za Zhi 1997; 18:227-9. [PMID: 9812525] [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: 02/09/2023]
Abstract
The natural immunity status in different age groups was investigated. The positive rate of HI antibody under the age of 4 was less than 25%. The natural immunity level increased gradually with age and the positive rate of the antibody reached 80% among the group aged 13-25. Rate of seroconversion was 100% in any age group one month after immunization, and GMT rose from 13.33 to 243.16. It was suggested that immunogenicity of domestic attenuated live rubella vaccine BRD II was satisfactory. For the population with positive-antibody before immunization, the total GMT rose from 189.59 to 259.00 after vaccination and the difference between immunization before and after was highly significant. According to the above result, we suggested that the vaccination strategy for rubella among young children and women of child-bearing age should be implemented.
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Affiliation(s)
- X W Xiong
- Jiangsu Provincial Hygiene and Epidemic Prevention Station, Nanjing
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Qin WB, Ju TL, Yue XL, Yan XL, Qin LY, Molchanova TP, Pobedimskaya DD, Huisman TH. Hb A2-liangcheng [delta 117(G19)Asn->Asp(AAC->GAC)]: a new delta chain variant detected by gene analysis in a Chinese family. Hemoglobin 1993; 17:463-6. [PMID: 8294205 DOI: 10.3109/03630269308997501] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- W B Qin
- Hemoglobin Laboratory, Baotou Medical College, Inner Mongolia P.R., China
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Liu Z, Wang Z, Li YS, Yan XL, Sun DD, Xiao HY, Zhu XF, He DG, Huang DH, Lu HB. [Screening of 6314 children in Chengdu for hematuria, proteinuria and bacteriuria]. Hua Xi Yi Ke Da Xue Xue Bao 1988; 19:297-300. [PMID: 3253177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Hu XY, Liu GZ, Cao WY, Yan XL, Xue P. Hepatitis B surface antigen in bedbug in Nanjing. Chin Med J (Engl) 1984; 97:928-30. [PMID: 6443291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
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