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Xu R, Liu Z, Xie B, Shu L, Peng B. Boosting tetracycline degradation of BaTiO 3-based piezo-catalysts via modulating phase boundary and band structure. J Colloid Interface Sci 2024; 665:888-897. [PMID: 38564953 DOI: 10.1016/j.jcis.2024.03.191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Revised: 03/12/2024] [Accepted: 03/28/2024] [Indexed: 04/04/2024]
Abstract
Piezoelectric catalysis, which converts mechanical energy into chemical activity, has important applications in environmental remediation. However, the piezo-catalytic activity of various piezoelectric materials is limited by the weak piezoelectricity as well as the mismatched band-gap, leading to inefficient electron-hole pair generation and difficult carrier migration. Here, a simple strategy combining phase boundary and energy band structure modulation was innovatively proposed to enhance the piezo-catalytic activity of BaTiO3 ferroelectric by Ce ions selecting different doping sites. Thanks to the coexistence of tetragonal (P4mm) and orthorhombic (Amm2) phases effectively flattened the Gibbs free-energy and thus enhanced the piezoelectric activity, as well as suitable energy bandwidth facilitating the carrier migration were realized in the B-sites doped Ba(Ti0.95Ce0.05)O3. The degradation rate constant k of tetracycline (TC) was high to 30.56 × 10-3 min-1, which was 2.03 times higher than that of pure BaTiO3 and superior to most representative lead-free perovskite piezoelectric materials. Theoretical calculations validated that the charge density and high O2 and OH- adsorption energy on the Ba(Ti0.95Ce0.05)O3 surface promoted more efficient •O2- and •OH radicals conversion and bettered response to piezo-catalytic reaction. This work is important to design high-performance piezo-catalysts by synergistic regulation of phase boundary and energy band structure in perovskite materials for long-term antibiotic tetracycline removal.
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Affiliation(s)
- Runtian Xu
- School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China
| | - Zhiyong Liu
- School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China.
| | - Bing Xie
- School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China
| | - Longlong Shu
- School of Physics and Materials Science, Nanchang University, Nanchang 330031, China
| | - Biaolin Peng
- School of Advanced Materials and Nanotechnology, Xidian University, Xi'an 710126, China.
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Jiang CY, Wang Y, Ding ZF, Shu L. Low-temperature behaviors of the dipolar magnet Dy 3Sb 3Zn 2O 14with a strongly site-mixing disordered kagome lattice. J Phys Condens Matter 2024; 36:315801. [PMID: 38655737 DOI: 10.1088/1361-648x/ad424b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Accepted: 04/23/2024] [Indexed: 04/26/2024]
Abstract
Interesting behaviors may emerge in the magnetic frustrated materials with significant site-mixing disorder. We present the results of the structural, magnetic susceptibility, and specific heat measurements of Dy3Sb3Zn2O14with ∼20%Dy/Zn site-mixing disorder, which results in either a diluted 2D triangular lattice, or an intermediate structure between the kagome and pyrochlore lattice. In addition to the sharp anomaly of the temperature dependence of specific heat atT∼0.35 K, which was attributed to the emergent charge order state for the sample with less disorder, a broad peak atT∼1.5 K, and a small hump belowT∼0.1 K are observed. The measured temperature dependence of specific heat and the Monte Carlo simulation suggest that the magnetic frustration persists despite of a strong site-mixing disorder.
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Affiliation(s)
- C Y Jiang
- State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200438, People's Republic of China
| | - Y Wang
- State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200438, People's Republic of China
| | - Z F Ding
- State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200438, People's Republic of China
| | - L Shu
- State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200438, People's Republic of China
- Shanghai Research Center for Quantum Sciences, Shanghai 201315, People's Republic of China
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Wang Z, Shu S, Wei X, Liang R, Ke S, Shu L, Catalan G. Flexophotovoltaic Effect and Above-Band-Gap Photovoltage Induced by Strain Gradients in Halide Perovskites. Phys Rev Lett 2024; 132:086902. [PMID: 38457719 DOI: 10.1103/physrevlett.132.086902] [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: 07/13/2023] [Accepted: 12/05/2023] [Indexed: 03/10/2024]
Abstract
We have measured the flexophotovoltaic effect of single crystals of halide perovskites MAPbBr_{3} and MAPbI_{3}, as well as the benchmark oxide perovskite SrTiO_{3}. For halide perovskites, the flexophotovoltaic effect is found to be orders of magnitude larger than for SrTiO_{3}, and indeed large enough to induce photovoltages bigger than the band gap. Moreover, we find that in MAPbI_{3} the flexophotovoltaic effect is additional to a native bulk photovoltaic response that is switchable and ferroelectric-like. The results suggest that strain gradient engineering can be a powerful tool to modify the photovoltaic output even in already well-established photovoltaic materials.
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Affiliation(s)
- Zhiguo Wang
- School of Physics and Materials Science, Nanchang University, Nanchang 330031, People's Republic of China
| | - Shengwen Shu
- College of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350108, People's Republic of China
| | - Xiaoyong Wei
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education and International Center for Dielectric Research, Xi'an Jiao Tong University, Xi'an 710049, People's Republic of China
| | - Renhong Liang
- School of Physics and Materials Science, Nanchang University, Nanchang 330031, People's Republic of China
| | - Shanming Ke
- School of Physics and Materials Science, Nanchang University, Nanchang 330031, People's Republic of China
| | - Longlong Shu
- School of Physics and Materials Science, Nanchang University, Nanchang 330031, People's Republic of China
| | - Gustau Catalan
- Institucio Catalana de Recerca i Estudis Avançats (ICREA), Barcelona 08010, Catalonia
- Institut Catala de Nanociencia i Nanotecnologia (ICN2), CSIC-BIST, Campus Universitat Autonoma de Barcelona, Barcelona 08193, Catalonia
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Zhang Y, Huang J, Zhu M, Zhang Z, Nie K, Wang Z, Liao X, Shu L, Tian T, Wang Z, Lu Y, Fei L. Significant hydrogen generation via photo-mechanical coupling in flexible methylammonium lead iodide nanowires. Chem Sci 2024; 15:1782-1788. [PMID: 38303930 PMCID: PMC10829025 DOI: 10.1039/d3sc05434a] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 12/21/2023] [Indexed: 02/03/2024] Open
Abstract
The flexoelectric effect, which refers to the mechanical-electric coupling between strain gradient and charge polarization, should be considered for use in charge production for catalytically driving chemical reactions. We have previously revealed that halide perovskites can generate orders of higher magnitude flexoelectricity under the illumination of light than in the dark. In this study, we report the catalytic hydrogen production by photo-mechanical coupling involving the photoflexoelectric effect of flexible methylammonium lead iodide (MAPbI3) nanowires (NWs) in hydrogen iodide solution. Upon concurrent light illumination and mechanical vibration, large strain gradients were introduced in flexible MAPbI3 NWs, which subsequently induced significant hydrogen generation (at a rate of 756.5 μmol g-1 h-1, surpassing those values from either photo- or piezocatalysis of MAPbI3 nanoparticles). This photo-mechanical coupling strategy of mechanocatalysis, which enables the simultaneous utilization of multiple energy sources, provides a potentially new mechanism in mechanochemistry for highly efficient hydrogen production.
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Affiliation(s)
- Yucheng Zhang
- School of Physics and Materials Science, Nanchang University Nanchang 330031 China
| | - Jiawei Huang
- School of Physics and Materials Science, Nanchang University Nanchang 330031 China
| | - Mengya Zhu
- Department of Mechanical Engineering, City University of Hong Kong Kowloon Hong Kong SAR China
| | - Zhouyang Zhang
- Department of Mechanical Engineering, City University of Hong Kong Kowloon Hong Kong SAR China
| | - Kaiqi Nie
- Institute of High Energy Physics, Chinese Academy of Sciences Beijing 100049 China
| | - Zhiguo Wang
- School of Physics and Materials Science, Nanchang University Nanchang 330031 China
| | - Xiaxia Liao
- School of Physics and Materials Science, Nanchang University Nanchang 330031 China
| | - Longlong Shu
- School of Physics and Materials Science, Nanchang University Nanchang 330031 China
| | - Tingfang Tian
- School of Physics and Materials Science, Nanchang University Nanchang 330031 China
| | - Zhao Wang
- Hubei Key Laboratory of Micro- & Nano electronic Materials and Devices, School of Microelectronics, Hubei University Wuhan 430062 China
| | - Yang Lu
- Department of Mechanical Engineering, The University of Hong Kong Hong Kong SAR China
| | - Linfeng Fei
- School of Physics and Materials Science, Nanchang University Nanchang 330031 China
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Liang R, Zhu L, Liu H, Ye M, Shu L, Zheng R, Ke S. Domain Matching Strategy for Orientation Control of van der Waals Epitaxial Perovskite Thin Films. ACS Appl Mater Interfaces 2023. [PMID: 37436879 DOI: 10.1021/acsami.3c05402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
The advantages of van der Waals epitaxy have attracted great interest because they can meet the requirements that conventional epitaxy struggles to satisfy. The weak adatom-substrate interaction without directional covalent bonding drastically relaxes the lattice matching limitation. However, the weak adatom-substrate interaction also leads to ineffectiveness in directing the crystal growth structure, limiting it to one orientation in epitaxial growth. In this work, we propose a domain matching strategy to guide the perovskite-type crystal epitaxial growth on 2D substrates, and we have demonstrated selective deposition of highly (001)-, (110)-, and (111)-oriented epitaxial Fe4N thin films on mica substrates using applicable transition structure design. Our work makes it possible to achieve and control different orientations of van der Waals epitaxy on the same substrate.
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Affiliation(s)
- Renhong Liang
- School of Physics and Materials Science, Nanchang University, Nanchang 330031, PR China
- School of Physics and Materials Science, Guangzhou University, Guangzhou 510006, PR China
| | - Liwen Zhu
- School of Physics and Materials Science, Nanchang University, Nanchang 330031, PR China
| | - Hua Liu
- School of Physics and Materials Science, Guangzhou University, Guangzhou 510006, PR China
| | - Mao Ye
- School of Physics and Materials Science, Guangzhou University, Guangzhou 510006, PR China
| | - Longlong Shu
- School of Physics and Materials Science, Nanchang University, Nanchang 330031, PR China
| | - Renkui Zheng
- School of Physics and Materials Science, Guangzhou University, Guangzhou 510006, PR China
| | - Shanming Ke
- School of Physics and Materials Science, Guangzhou University, Guangzhou 510006, PR China
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Gan J, Ji CF, Mao XR, Wang JT, Lyu CY, Shi YF, Liao Y, He YL, Shu L, Li L, Li JF. [Synchronization isolation method for multiple types of cells from mouse liver]. Zhonghua Gan Zang Bing Za Zhi 2023; 31:532-537. [PMID: 37365031 DOI: 10.3760/cma.j.cn501113-20220827-00433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Objective: To explore a simple and feasible method for the isolation and purification of hepatocytes, hepatic stellate cells (HSC), and lymphocytes from mice. Methods: The cell suspension was obtained from male C57bl/6 mice by hepatic perfusion through the portal vein digestion method and then isolated and purified by discontinuous Percoll gradient centrifugation. Trypan blue exclusion was used to determine cell viability. Glycogen staining, cytokeratin 18, and transmission electron microscopy were used to identify hepatic cells. Immunofluorescence was used to detect α-smooth muscle actin combined with desmin in HSCs. Flow cytometry was used to analyze lymphocyte subsets in the liver. Results: After isolation and purification, about 2.7×10(7) hepatocytes, 5.7×10(5) HSCS, and 4.6×106 hepatic mononuclear cells were obtained from the liver of mice with a body weight of about 22g. The cell survival rate in each group was > 95%. Hepatocytes were apparent in glycogen deposited purple-red granules and cytokeratin 18. Electron microscopy showed that there were abundant organelles in hepatocytes and tight junctions between cells. HSC had expressed α-smooth muscle actin and desmin. Flow cytometry showed hepatic mononuclear cells, including lymphocyte subsets such as CD4, CD8, NKs, and NKTs. Conclusion: The hepatic perfusion through the portal vein digestion method can isolate multiple primary cells from the liver of mice at once and has the features of simplicity and efficiency.
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Affiliation(s)
- J Gan
- The First Clinical Medical College of Lanzhou University, Lanzhou 730000, China
| | - C F Ji
- The First Clinical Medical College of Lanzhou University, Lanzhou 730000, China
| | - X R Mao
- The First Clinical Medical College of Lanzhou University, Lanzhou 730000, China
| | - J T Wang
- The First Clinical Medical College of Lanzhou University, Lanzhou 730000, China
| | - C Y Lyu
- The First Clinical Medical College of Lanzhou University, Lanzhou 730000, China
| | - Y F Shi
- The First Clinical Medical College of Lanzhou University, Lanzhou 730000, China
| | - Y Liao
- The First Clinical Medical College of Lanzhou University, Lanzhou 730000, China
| | - Y L He
- The First Clinical Medical College of Lanzhou University, Lanzhou 730000, China
| | - L Shu
- The First Clinical Medical College of Lanzhou University, Lanzhou 730000, China
| | - L Li
- The First Clinical Medical College of Lanzhou University, Lanzhou 730000, China
| | - J F Li
- The First Clinical Medical College of Lanzhou University, Lanzhou 730000, China
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Zhang Y, Wen CH, Xia XR, Wang J, Xia M, Qian Y, Shu L, Liu JY, Wang DW, Ma X. [Effect of dyslipidemia on clinical outcome of infertility patients receiving donor eggs]. Zhonghua Fu Chan Ke Za Zhi 2022; 57:686-691. [PMID: 36177580 DOI: 10.3760/cma.j.cn112141-20220125-00045] [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: 06/16/2023]
Abstract
Objective: To explore the effect of dyslipidemia on the clinical outcome of intracytoplasmic sperm injection-embryo transfer (ICSI-ET) in infertility patients receiving donor eggs. Methods: A total of 118 patients were selected to receive egg donors and ICSI-ET at the First Affiliated Hospital of Nanjing Medical University between April 2007 and December 2020. According to the levels of triacylglycerol, serum cholesterol, high density lipoprotein (HDL), and low density lipoprotein, they were divided into dyslipidemia group (35 cases) and normal blood lipids group (83 cases). The influence of body mass index (BMI) and age was adjusted by 1∶1 propensity score matching, and the general condition and clinical outcome of the two groups were analyzed retrospectively. Finally, the relationship between lipid composition and clinical outcome was analyzed according to patients' age and BMI. Results: (1) Comparing the pre-matching dyslipidemia group with the normal blood lipids group, the BMI of the dyslipidemia group was significantly higher than that of the normal blood lipids group [(23.5±2.4) vs (22.4±2.7) kg/m2], and the embryo implantation rate was significantly lower than that of the normal blood lipids group [13.6% (8/59) vs 27.3% (36/132)], the differences were statistically significant (both P<0.05). (2) There were no significant differences in years of infertility, number of pregnancies, number of abortions, number of transplanted embryos, protocol of endometrial preparation, endometrial thickness on transplantation day and high quality embryo rate between the two groups, through propensity score matching (all P>0.05). The biochemical pregnancy rate [28.6% (10/35)], embryo implantation rate [13.6% (8/59)] and live birth rate [20.0% (7/35)] in dyslipidemia group were significantly lower than those in the normal blood lipids group (P<0.05). The clinical pregnancy rate was lower than that of the normal blood lipids group (P>0.05). (3) The results of stratified analysis showed that the level of HDL in the clinically non-pregnant group was significantly lower than that in the pregnant group in patients ≤ 35 years old [(1.5±0.3) vs (1.8±0.5) mmol/L; P<0.05]. In the overweight recipient patients, the level of HDL of the clinically non-pregnant group was lower than that of the pregnant group (P>0.05). Conclusions: Dyslipidemia significantly reduces the biochemical pregnancy rate, embryo implantation rate and live birth rate in patients with receiving donor eggs. Especially in patients aged ≤35 years old, the reduction of HDL is closely related to adverse pregnancy outcomes.
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Affiliation(s)
- Y Zhang
- Center for Clinical Reproductive Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - C H Wen
- Center for Clinical Reproductive Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - X R Xia
- Center for Clinical Reproductive Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - J Wang
- Center for Clinical Reproductive Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - M Xia
- Center for Clinical Reproductive Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - Y Qian
- Center for Clinical Reproductive Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - L Shu
- Center for Clinical Reproductive Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - J Y Liu
- Center for Clinical Reproductive Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - D W Wang
- Center for Clinical Reproductive Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - X Ma
- Center for Clinical Reproductive Medicine, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
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Zhang Z, Shu L, Hu M, Zhou X, Yang F, Zhou XH. Emerging role of lncRNA DANCR in progenitor cells: beyond cancer. Eur Rev Med Pharmacol Sci 2021; 25:1399-1409. [PMID: 33629310 DOI: 10.26355/eurrev_202102_24848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Long noncoding RNAs (lncRNAs) are important participants in biological processes including cell proliferation, differentiation and death, as well as pathogenesis of various diseases. LncRNA differentiation antagonizing non-protein coding RNA (DANCR) is an emerging regulator in cell metabolism and many diseases besides cancers. DANCR is negative in epidermal, osteoblastic and endoderm differentiation, but positive in chondrogenic differentiation of progenitor cells. It is protective for calcification of the ligamentum flavum, stroke, acute myocardial infarction and arterial calcification, but a risk factor for bone loss, fracture healing and idiopathic pulmonary fibrosis. In addition, DANCR is a potential target for improving tissue regeneration. Mechanically, DANCR, a cytoplasmic lncRNA, sponges corresponding microRNAs or interacts with various proteins. This review aims to summarize the role of DANCR in progenitor cells and provide perspectives for further studies.
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Affiliation(s)
- Z Zhang
- College of Basic Medicine, Second Military Medical University, Shanghai, China.
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Zhang Z, Zhou X, Shu L, Hu M, Gao R, Zhou XH. The association between overweight/obesity and vertebral fractures in older adults: a meta-analysis of observational studies. Osteoporos Int 2021; 32:1079-1091. [PMID: 33411008 DOI: 10.1007/s00198-020-05764-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 11/25/2020] [Indexed: 11/26/2022]
Abstract
UNLABELLED A meta-analysis of observational studies was conducted to assess the relationship between overweight/obesity and vertebral fractures in older adults. We found that overweight was related to a decreased risk of vertebral fractures in female and non-Asian populations, while obesity failed to be associated with vertebral fracture risks based on the present data. INTRODUCTION Recent investigations suggest that the influence of overweight/obesity on fracture risks is site-specific, while conflicting data were reported related to vertebral fracture. This meta-analysis was performed to qualitatively assess the relationship between overweight/obesity and the risk of vertebral fracture. METHODS MEDLINE, Web of Science, Embase, and Cochrane were searched for relevant observational articles assessing the vertebral fracture risk of the overweight or obese population compared to normal population. Two independent reviewers conducted data extraction and quality assessment. Relative risks (RR) and 95% confidence intervals (CI) were pooled using a random effect model. RESULTS Eleven studies including 1,078,094 participants were extracted from 1645 records. Pooled RR showed that decreased risk of vertebral fractures was observed in the overweight older adults (RR: 1.16; 95% CI: 1.07-1.26; I2: 51.8%), but not in the obese populations (RR: 0.98; 95% CI: 0.82-1.17; I2: 92.1%). In the subgroup analysis, we found a significant inverse association between overweight and risk of vertebral fracture in women (RR: 0.92; 95% CI: 0.85-1.00; I2: 0.0%), non-Asian areas (RR: 0.89; 95% CI: 0.80-0.99; I2: 40.7%), sample size > 2000 (RR: 0.87; 95% CI: 0.80-0.94; I2: 4.9%), and quality score > 7 (RR: 0.87; 95% CI: 0.79-0.95; I2: 21.9%). Furthermore, pooled studies of sample size > 2000 (RR: 0.66; 95% CI: 0.76, 0.89; I2: 52.1%) and quality score > 7 (RR: 0.75; 95% CI: 0.62, 0.91; I2: 68.1%) showed that the people with obesity had a significantly lower prevalence of vertebral fracture. CONCLUSIONS Overweight aged adults tend to have a lower vertebral fracture risk. When gender and ethnicity were taken into consideration, the inverse relationship between overweight and vertebral fracture risk were only observed in female and non-Asian populations. Besides, there is insufficient data to conclude the relationship between obesity and the risk of vertebral fractures, and thus, further studies are needed.
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Affiliation(s)
- Z Zhang
- College of Basic Medicine, Second Military Medical University, Shanghai, China
- Department of Orthopedics, Changzheng Hospital, Second Affiliated Hospital of Second Military Medical University, 415 Fengyang Road, Shanghai, 200003, People's Republic of China
| | - X Zhou
- Department of Orthopedics, Changzheng Hospital, Second Affiliated Hospital of Second Military Medical University, 415 Fengyang Road, Shanghai, 200003, People's Republic of China
| | - L Shu
- College of Basic Medicine, Second Military Medical University, Shanghai, China
- Department of Orthopedics, Changzheng Hospital, Second Affiliated Hospital of Second Military Medical University, 415 Fengyang Road, Shanghai, 200003, People's Republic of China
| | - M Hu
- College of Basic Medicine, Second Military Medical University, Shanghai, China
- Department of Orthopedics, Changzheng Hospital, Second Affiliated Hospital of Second Military Medical University, 415 Fengyang Road, Shanghai, 200003, People's Republic of China
| | - R Gao
- Department of Orthopedics, Changzheng Hospital, Second Affiliated Hospital of Second Military Medical University, 415 Fengyang Road, Shanghai, 200003, People's Republic of China.
| | - X-H Zhou
- Department of Orthopedics, Changzheng Hospital, Second Affiliated Hospital of Second Military Medical University, 415 Fengyang Road, Shanghai, 200003, People's Republic of China.
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10
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Lou X, Yu TL, Song YH, Wen CHP, Wei WZ, Leithe-Jasper A, Ding ZF, Shu L, Kirchner S, Xu HC, Peng R, Feng DL. Distinct Kondo Screening Behaviors in Heavy Fermion Filled Skutterudites with 4f^{1} and 4f^{2} Configurations. Phys Rev Lett 2021; 126:136402. [PMID: 33861107 DOI: 10.1103/physrevlett.126.136402] [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: 06/08/2020] [Accepted: 02/25/2021] [Indexed: 06/12/2023]
Abstract
CeOs_{4}Sb_{12} (COS) and PrOs_{4}Sb_{12} (POS) are two representative compounds that provide the ideal vantage point to systematically study the physics of multi-f-electron systems. COS with Ce 4f^{1}, and POS with Pr 4f^{2} configurations show distinct properties of Kondo insulating and heavy fermion superconductivity, respectively. We unveiled the underlying microscopic origin by angle-resolved photoemission spectroscopy studies. Their eV-scale band structure matches well, representing the common characters of conduction electrons in ROs_{4}Sb_{12} systems (R=rare earth). However, f electrons interact differently with conduction electrons in COS and POS. Strong hybridization between conduction electrons and f electrons is observed in COS with band dependent hybridization gaps, and the development of a Kondo insulating state is directly revealed. Although the ground state of POS is a singlet, finite but incoherent hybridization exists, which can be explained by the Kondo scattering with the thermally excited triplet crystalline electric field state. Our results help us to understand the intriguing properties in COS and POS, and provide a clean demonstration of the microscopic differences in heavy fermion systems with 4f^{1} and 4f^{2} configurations.
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Affiliation(s)
- X Lou
- Laboratory of Advanced Materials, State Key Laboratory of Surface Physics, and Department of Physics, Fudan University, Shanghai 200438, China
| | - T L Yu
- Laboratory of Advanced Materials, State Key Laboratory of Surface Physics, and Department of Physics, Fudan University, Shanghai 200438, China
| | - Y H Song
- Laboratory of Advanced Materials, State Key Laboratory of Surface Physics, and Department of Physics, Fudan University, Shanghai 200438, China
| | - C H P Wen
- Laboratory of Advanced Materials, State Key Laboratory of Surface Physics, and Department of Physics, Fudan University, Shanghai 200438, China
| | - W Z Wei
- Laboratory of Advanced Materials, State Key Laboratory of Surface Physics, and Department of Physics, Fudan University, Shanghai 200438, China
| | - A Leithe-Jasper
- Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straβe 40, 01187 Dresden, Germany
| | - Z F Ding
- Laboratory of Advanced Materials, State Key Laboratory of Surface Physics, and Department of Physics, Fudan University, Shanghai 200438, China
| | - L Shu
- Laboratory of Advanced Materials, State Key Laboratory of Surface Physics, and Department of Physics, Fudan University, Shanghai 200438, China
- Shanghai Research Center for Quantum Sciences, Shanghai 201315, China
| | - S Kirchner
- Zhejiang Institute of Modern Physics and Department of Physics, Zhejiang University, Hangzhou 310027, China
- Zhejiang Province Key Laboratory of Quantum Technology and Device, Zhejiang University, Hangzhou 310027, China
| | - H C Xu
- Laboratory of Advanced Materials, State Key Laboratory of Surface Physics, and Department of Physics, Fudan University, Shanghai 200438, China
- Shanghai Research Center for Quantum Sciences, Shanghai 201315, China
| | - R Peng
- Laboratory of Advanced Materials, State Key Laboratory of Surface Physics, and Department of Physics, Fudan University, Shanghai 200438, China
- Shanghai Research Center for Quantum Sciences, Shanghai 201315, China
| | - D L Feng
- Shanghai Research Center for Quantum Sciences, Shanghai 201315, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
- Hefei National Laboratory for Physical Science at Microscale, CAS Center for Excellence in Quantum Information and Quantum Physics, and Department of Physics, University of Science and Technology of China, Hefei 230026, China
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Wu F, Hu C, Huang Y, Pu X, Liu C, Liu X, Ma F, Zhao L, Shu L, Pan Y, Zeng Y. FP01.02 The Efficacy of Postoperative Radiotherapy in IIIA-N2 Non-Squamous NSCLC with Different EGFR Mutation Status: A Retrospective Analysis. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Shu L, Ke S, Fei L, Huang W, Wang Z, Gong J, Jiang X, Wang L, Li F, Lei S, Rao Z, Zhou Y, Zheng RK, Yao X, Wang Y, Stengel M, Catalan G. Photoflexoelectric effect in halide perovskites. Nat Mater 2020; 19:605-609. [PMID: 32313265 DOI: 10.1038/s41563-020-0659-y] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Accepted: 03/06/2020] [Indexed: 05/28/2023]
Abstract
Harvesting environmental energy to generate electricity is a key scientific and technological endeavour of our time. Photovoltaic conversion and electromechanical transduction are two common energy-harvesting mechanisms based on, respectively, semiconducting junctions and piezoelectric insulators. However, the different material families on which these transduction phenomena are based complicate their integration into single devices. Here we demonstrate that halide perovskites, a family of highly efficient photovoltaic materials1-3, display a photoflexoelectric effect whereby, under a combination of illumination and oscillation driven by a piezoelectric actuator, they generate orders of magnitude higher flexoelectricity than in the dark. We also show that photoflexoelectricity is not exclusive to halides but a general property of semiconductors that potentially enables simultaneous electromechanical and photovoltaic transduction and harvesting in unison from multiple energy inputs.
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Affiliation(s)
- Longlong Shu
- School of Materials Science and Engineering, Nanchang University, Nanchang, People's Republic of China.
| | - Shanming Ke
- School of Materials Science and Engineering, Nanchang University, Nanchang, People's Republic of China
| | - Linfeng Fei
- School of Materials Science and Engineering, Nanchang University, Nanchang, People's Republic of China
| | - Wenbin Huang
- The State Key Lab of Mechanical Transmissions, Chongqing University, Chongqing, People's Republic of China
| | - Zhiguo Wang
- The State Key Lab of Mechanical Transmissions, Chongqing University, Chongqing, People's Republic of China
| | - Jinhui Gong
- School of Materials Science and Engineering, Nanchang University, Nanchang, People's Republic of China
| | - Xiaoning Jiang
- Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC, USA
| | - Li Wang
- School of Materials Science and Engineering, Nanchang University, Nanchang, People's Republic of China
| | - Fei Li
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education and International Center for Dielectric Research, Xi'an Jiao Tong University, Xi'an, People's Republic of China
| | - Shuijin Lei
- School of Materials Science and Engineering, Nanchang University, Nanchang, People's Republic of China
| | - Zhenggang Rao
- School of Materials Science and Engineering, Nanchang University, Nanchang, People's Republic of China
| | - Yangbo Zhou
- School of Materials Science and Engineering, Nanchang University, Nanchang, People's Republic of China
| | - Ren-Kui Zheng
- School of Materials Science and Engineering, Nanchang University, Nanchang, People's Republic of China
| | - Xi Yao
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education and International Center for Dielectric Research, Xi'an Jiao Tong University, Xi'an, People's Republic of China
| | - Yu Wang
- School of Materials Science and Engineering, Nanchang University, Nanchang, People's Republic of China
| | - Massimiliano Stengel
- Institucio Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Catalonia
- Institut de Ciencia de Materials de Barcelona (ICMAB), Consejo Superior de Investigaciones Científicas (CSIC), Campus Universitat Autonoma de Barcelona, Barcelona, Catalonia
| | - Gustau Catalan
- Institucio Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, Catalonia.
- Institut Catala de Nanociencia i Nanotecnologia (ICN2), Consejo Superior de Investigaciones Científicas and The Barcelona Institute of Science and Technology (CSIC-BIST), Campus Universitat Autonoma de Barcelona, Barcelona, Catalonia.
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13
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Affiliation(s)
- L Shu
- Department of Respiratory Medicine, Sir Run Run Hospital, Nanjing Medical University, Nanjing, Jiangsu 211166, China.
| | - N Ji
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, China
| | - X Chen
- Department of Respiratory Medicine, Sir Run Run Hospital, Nanjing Medical University, Nanjing, Jiangsu 211166, China
| | - G Feng
- Department of Respiratory Medicine, Sir Run Run Hospital, Nanjing Medical University, Nanjing, Jiangsu 211166, China; Department of Respiratory Medicine, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210011, China.
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14
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Mao Z, Zhang N, Shu L, Cui Y. Imaging characteristics of the mandible and upper airway in children with Robin sequence and relationship to the treatment strategy. Int J Oral Maxillofac Surg 2020; 49:1122-1127. [PMID: 32089444 DOI: 10.1016/j.ijom.2020.02.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 12/22/2019] [Accepted: 02/10/2020] [Indexed: 11/30/2022]
Abstract
Some patients with Robin sequence (RS) may respond to conservative therapy, while others require surgery; however, there are currently no objective anatomical criteria to gauge surgical indication. The purpose of this study was to explore the imaging characteristics of the mandible and upper respiratory tract in children with RS and examine how individual morphometric parameters influence the treatment strategy. Cone beam computed tomography (CBCT) images were obtained from 57 children with RS. Twenty parameters were measured as potential surgical indicators. The children were divided into two groups according to surgical requirement: a non-surgical group (26 children) and a surgical group (31 children who underwent mandibular osteodistraction). Differences in the imaging parameters were compared between the groups. The mandibular ramus was shorter bilaterally (left, P = 0.047; right, P = 0.027) and the mandibular body was longer bilaterally (left, P = 0.030; right, P = 0.025) in the surgical group when compared to the non-surgical group. In addition, the mandibular angle bilaterally (left, P = 0.023; right, P = 0.003) and the cross-sectional area at the epiglottis tip (P = 0.010) were smaller in the surgical group. Compared to RS patients receiving conservative treatment, children requiring surgery have specific anatomical features of the mandible and upper airway that can be used as surgical indications.
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Affiliation(s)
- Z Mao
- Guangzhou Women and Children's Medical Centre, Guangzhou, Guangdong, China
| | - N Zhang
- Guangzhou Women and Children's Medical Centre, Guangzhou, Guangdong, China
| | - L Shu
- Guangzhou Women and Children's Medical Centre, Guangzhou, Guangdong, China
| | - Y Cui
- Guangzhou Women and Children's Medical Centre, Guangzhou, Guangdong, China.
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15
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Xu Y, Pan ZG, Shu L, Li QJ. Podocalyxin-like, targeted by miR-138, promotes colorectal cancer cell proliferation, migration, invasion and EMT. Eur Rev Med Pharmacol Sci 2020; 22:8664-8674. [PMID: 30575907 DOI: 10.26355/eurrev_201812_16631] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Emerging evidence has shown that Podocalyxin-like (PODXL) plays an important role in the development and progression of several tumors, including colorectal cancer (CRC). However, its potential role in CRC is still not documented. The present study aimed to explore biological functions and molecular mechanisms in CRC development. PATIENTS AND METHODS Microarray data were downloaded from TCGA datasets and statistically analyzed. RT-PCR was performed to detect the expression of PODXL and miR-138. Lost-function assay was used to explore the roles of PODXL on CRC behavior. Bioinformatics tools were used to identify the upstream miRNAs and the relationship between PODXL and miR-138 was detected via Dual-Luciferase assay, Western blot and rescue experiments. RESULTS PODXL expression was significantly up-regulated in both CRC tissues and cell lines. In vitro experiments showed the knockdown of PODXL suppressed reduces CRC tumor growth, metastasis and EMT, and promoted apoptosis. Moreover, PODXL was predicted and confirmed to be a target of miR-138. In addition, ectopic expression of PODXL significantly reversed the suppression of cell proliferation and metastasis caused by the miR-138 over-expression. CONCLUSIONS We provided important evidence that PODXL, targeted by miR-138, acted as a tumor promoter in CRC by suppressing CRC cells proliferation and metastasis, which may provide a novel potential target for diagnostic and therapeutic applications in CRC.
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Affiliation(s)
- Y Xu
- Department of Gastroenterology, Huai'an First People's Hospital, Nanjing Medical University, Huai'an, Jiangsu, China.
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16
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Cui Y, Zou H, Xi N, He Z, Yang YX, Shu L, Zhang GH, Hu Z, Chen T, Yu R, Wu J, Yu W. Quantum Criticality of the Ising-like Screw Chain Antiferromagnet SrCo_{2}V_{2}O_{8} in a Transverse Magnetic Field. Phys Rev Lett 2019; 123:067203. [PMID: 31491156 DOI: 10.1103/physrevlett.123.067203] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Revised: 04/29/2019] [Indexed: 06/10/2023]
Abstract
The quantum criticality of an Ising-like screw chain antiferromagnet SrCo_{2}V_{2}O_{8}, with a transverse magnetic field applied along the crystalline a axis, is investigated by ultralow temperature NMR measurements. The Néel temperature is rapidly and continuously suppressed by the field, giving rise to a quantum critical point (QCP) at H_{C_{1}}≈7.03 T. Surprisingly, a second QCP at H_{C_{2}}≈7.7 T featured with gapless excitations is resolved from both the double-peak structure of the field-dependent spin-lattice relaxation rate 1/^{51}T_{1} at low temperatures and the weakly temperature-dependent 1/^{51}T_{1} at this field. Our data, combined with numerical calculations, suggest that the induced effective staggered transverse field significantly lowers the critical fields, and leads to an exposed QCP at H_{C_{2}}, which belongs to the one-dimensional transverse-field Ising universality.
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Affiliation(s)
- Y Cui
- Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing 100872, China
| | - H Zou
- Tsung-Dao Lee Institute & School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - N Xi
- Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing 100872, China
| | - Zhangzhen He
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Y X Yang
- State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, China
| | - L Shu
- State Key Laboratory of Surface Physics, Department of Physics, Fudan University, Shanghai 200433, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
| | - G H Zhang
- Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing 100872, China
| | - Z Hu
- Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing 100872, China
| | - T Chen
- Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing 100872, China
| | - Rong Yu
- Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing 100872, China
| | - Jianda Wu
- Tsung-Dao Lee Institute & School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Weiqiang Yu
- Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials & Micro-nano Devices, Renmin University of China, Beijing 100872, China
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17
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Ao P, Shu L, Zhuo D, Zhang ZX, Dong CB, Huang HB, Wei ZQ. [Risk factors associated with systemic inflammatory response syndrome after flexible ueteroscopic lithotripsy based on enhanced recovery after surgery]. Zhonghua Yi Xue Za Zhi 2019; 99:758-763. [PMID: 30884630 DOI: 10.3760/cma.j.issn.0376-2491.2019.10.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the risk factors of systemic inflammatory response syndrome (SIRS) in patients undergoing flexible ureteroscopic lithotripsy based on enhanced recovery after surgery (ERAS). Methods: The clinical data of 243 kidney stone cases who underwent flexible ureteroscopic lithotripsy based on ERAS in the First Affiliated Hospital of Wannan Medical College from January 2016 to December 2017 were analyzed retrospectively. The cases were divided into two groups according to whether they had SIRS after surgery: SIRS group (26 cases) and non-SIRS group (217 cases). The age, gender, laterality of kidney stone, history of previous kidney stone surgery, degree of hydronephrosis, multiple kidney stones, length of operation time, white blood cell count of preoperative urine routine, result of preoperative urine culture, use of preoperative antibiotics, diabetes and other chronic diseases in the groups were collected and analyzed. Results: SIRS occurred in 26 cases in this study, which accounted for 10.7% (26/243). Multivariate analysis found that, moderate and severe hydronephrosis (OR=6.711, P=0.008), stone burden ≥2 cm (OR=10.353, P<0.001), length of operation time ≥ 60 min (OR=5.583, P=0.011), white blood cell count of preoperative urine routine ≥25×10(6)/L (OR=6.195, P=0.005), positive preoperative urine culture (OR=4.216, P=0.011), diabetes and other chronic diseases (OR=4.532, P=0.006) were the independent risk factors for postoperative SIRS (P<0.05). Conclusions: The occurrence of SIRS after flexible ureteroscopic lithotripsy based on ERAS is closely correlated with hydronephrosis, stone burden, length of operation time, white blood cell count of preoperative urine routine, positive preoperative urine culture, diabetes and other chronic diseases.
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Affiliation(s)
- P Ao
- Department of Urology, the First Affiliated Hospital of Wannan Medical College, Wuhu 241001, China
| | - L Shu
- Department of Operating Room, the First Affiliated Hospital of Wannan Medical College, Wuhu 241001, China
| | - D Zhuo
- Department of Urology, the First Affiliated Hospital of Wannan Medical College, Wuhu 241001, China
| | - Z X Zhang
- Department of Urology, the First Affiliated Hospital of Wannan Medical College, Wuhu 241001, China
| | - C B Dong
- Department of Urology, the First Affiliated Hospital of Wannan Medical College, Wuhu 241001, China
| | - H B Huang
- Department of Urology, the First Affiliated Hospital of Wannan Medical College, Wuhu 241001, China
| | - Z Q Wei
- Department of Urology, the Second Affiliated Hospital of Nanjing Medical University, Nanjing 210011, China
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18
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Goehring I, Sauter NS, Catchpole G, Assmann A, Shu L, Zien KS, Moehlig M, Pfeiffer AFH, Oberholzer J, Willmitzer L, Spranger J, Maedler K. Correction to: Identification of an intracellular metabolic signature impairing beta cell function in the rat beta cell line INS-1E and human islets. Diabetologia 2019; 62:553-554. [PMID: 30635678 DOI: 10.1007/s00125-018-4717-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
As part of an institutional investigation by University of Bremen, the work carried out by Kathrin Maedler's laboratory has been reviewed.
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Affiliation(s)
- I Goehring
- Department of Endocrinology, Diabetes and Nutrition, Charité-Universitaetsmedizin Berlin, Nuthetal, Germany
- Department of Clinical Nutrition, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
| | - N S Sauter
- Department of Biomedicine, University Hospital Basel, Basel, Switzerland
| | - G Catchpole
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany
| | - A Assmann
- Department of Endocrinology, Diabetes and Nutrition, Charité-Universitaetsmedizin Berlin, Nuthetal, Germany
- Department of Clinical Nutrition, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
| | - L Shu
- Islet Biology Laboratory, Centre for Biomolecular Interactions Bremen, University of Bremen, Leobener Straße NW2, Room B2080, 28359, Bremen, Germany
| | - K S Zien
- Islet Biology Laboratory, Centre for Biomolecular Interactions Bremen, University of Bremen, Leobener Straße NW2, Room B2080, 28359, Bremen, Germany
| | - M Moehlig
- Department of Endocrinology, Diabetes and Nutrition, Charité-Universitaetsmedizin Berlin, Nuthetal, Germany
- Department of Clinical Nutrition, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
| | - A F H Pfeiffer
- Department of Endocrinology, Diabetes and Nutrition, Charité-Universitaetsmedizin Berlin, Nuthetal, Germany
- Department of Clinical Nutrition, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
| | - J Oberholzer
- Division of Transplantation, University of Illinois at Chicago, Chicago, IL, USA
| | - L Willmitzer
- Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany
| | - J Spranger
- Department of Endocrinology, Diabetes and Nutrition, Charité-Universitaetsmedizin Berlin, Nuthetal, Germany
- Department of Clinical Nutrition, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
| | - K Maedler
- Islet Biology Laboratory, Centre for Biomolecular Interactions Bremen, University of Bremen, Leobener Straße NW2, Room B2080, 28359, Bremen, Germany.
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19
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Kulminski A, Shu L, Loika Y, Culminskaya I. MOLECULAR SIGNATURES OF ALZHEIMER’S DISEASE IN THE TOMM40-APOE-APOC1 LOCUS IN DIFFERENT RACE AND ETHNIC GROUPS. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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20
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Sikka N, Shu L, Ritchie B, Pourmand A. 297 Virtual Reality-Assisted Pain, Anxiety, and Anger Management in the Emergency Department. Ann Emerg Med 2018. [DOI: 10.1016/j.annemergmed.2018.08.302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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21
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Wu CX, Zhang T, Shu L, Huang J, Diao FY, Ding W, Gao Y, Wang W, Mao YD, Cui YG, Liu JY. [Cumulative live birth rates per oocytes retrieved cycle: evaluation of clinical outcomes of IVF/ICSI]. Zhonghua Fu Chan Ke Za Zhi 2018; 53:160-166. [PMID: 29609229 DOI: 10.3760/cma.j.issn.0529-567x.2018.03.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: Using of cumulative live birth rate (CLBR) per oocytes retrieved cycle, to assess the clinical outcomes of in vitro fertilization or intracytoplasmic sperm injection (IVF/ICSI) , and to explore impact factors on CLBR following utilization of all fresh and frozen embryos in one complete IVF/ICSI cycle using gonadotropin-releasing hormone (GnRH) agonist, GnRH-antagonist and clomiphene mild stimulation protocols. Methods: Of the patients who underwent IVF/ICSI from January 1st, 2014 to December 31st, 2015 in the First Affiliated Hospital, Nanjing Medical University, a total of 6 142 oocytes retrieved cycles were included. The clinical and laboratory parameters of different ovarian stimulation protocols, and the effects of the age, number of oocytes retrieved and number of embryos available on the CLBR of each oocytes retrieved cycle were analyzed. Results: The CLBR was 69.0% (2 004/2 906) in the GnRH-agonist protocol versus 67.4% (644/955) in the GnRH-antagonist protocol (P>0.05); the CLBR of clomiphene mild stimulation protocol was 53.2% (1 215/2 281) , significantly lower than those of the other two protocols (all P<0.05). The CLBR significantly decreased with age increased. When divided into four groups according to the patients' age, we found that CLBR were not statistically significant using three different protocols in the 20-25 years old group (all P>0.05). There was a strong association between the number of oocytes retrieved and embryos available on CLBR. CLBR rose significantly with an increasing number of oocytes up to 6, then the rising trend slowed down. Patients were categorized into four groups according to the number of oocytes retrieved, CLBR was significantly higher using GnRH-antagonist protocol (50.0%) than mild stimulation protocol (37.0%) in low ovarian responder (0-4 oocytes) group (P<0.05) . The CLBR were no significant difference among three protocols in normal (10-15 oocytes) and high responders (≥15 oocytes) group (all P>0.05) . The incidence rate of ovarian hyperstimulation syndrome in GnRH-agonist protocols (5.2%, 152/2 906) were significantly higher than those of GnRH-antagonist (4.4%, 42/955) and clomiphene mild stimulation protocols (1.5%, 34/2 281; all P<0.05) . Conclusions: CLBR is an important index to assess the clinical outcomes of IVF/ICSI. Age, number of oocytes retrieved and embryos available could affect CLBR obviously. According to the different age and ovarian response of patients, we should design ovarian stimulation protocols based on target oocytes number in order to get higher CLBR and reduce complications.
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Affiliation(s)
- C X Wu
- Center of Reproductive Medicine, First Affiliated Hospital, Nanjing Medical University, Nanjing 210029, China
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22
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Chen QY, Xu DF, Niu XH, Peng R, Xu HC, Wen CHP, Liu X, Shu L, Tan SY, Lai XC, Zhang YJ, Lee H, Strocov VN, Bisti F, Dudin P, Zhu JX, Yuan HQ, Kirchner S, Feng DL. Band Dependent Interlayer f-Electron Hybridization in CeRhIn_{5}. Phys Rev Lett 2018; 120:066403. [PMID: 29481263 DOI: 10.1103/physrevlett.120.066403] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 01/02/2018] [Indexed: 06/08/2023]
Abstract
A key issue in heavy fermion research is how subtle changes in the hybridization between the 4f (5f) and conduction electrons can result in fundamentally different ground states. CeRhIn_{5} stands out as a particularly notable example: when replacing Rh with either Co or Ir, antiferromagnetism gives way to superconductivity. In this photoemission study of CeRhIn_{5}, we demonstrate that the use of resonant angle-resolved photoemission spectroscopy with polarized light allows us to extract detailed information on the 4f crystal field states and details on the 4f and conduction electron hybridization, which together determine the ground state. We directly observe weakly dispersive Kondo resonances of f electrons and identify two of the three Ce 4f_{5/2}^{1} crystal-electric-field levels and band-dependent hybridization, which signals that the hybridization occurs primarily between the Ce 4f states in the CeIn_{3} layer and two more three-dimensional bands composed of the Rh 4d and In 5p orbitals in the RhIn_{2} layer. Our results allow us to connect the properties observed at elevated temperatures with the unusual low-temperature properties of this enigmatic heavy fermion compound.
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Affiliation(s)
- Q Y Chen
- State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China
- Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621908, China
| | - D F Xu
- State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China
| | - X H Niu
- State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China
| | - R Peng
- State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China
| | - H C Xu
- State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China
| | - C H P Wen
- State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China
| | - X Liu
- State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China
| | - L Shu
- State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China
| | - S Y Tan
- Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621908, China
| | - X C Lai
- Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang 621908, China
| | - Y J Zhang
- Center for Correlated Matter, Zhejiang University, Hangzhou 310058, China
- Department of Physics, Zhejiang University, Hangzhou 310027, China
| | - H Lee
- Center for Correlated Matter, Zhejiang University, Hangzhou 310058, China
| | - V N Strocov
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
| | - F Bisti
- Swiss Light Source, Paul Scherrer Institute, CH-5232 Villigen, Switzerland
| | - P Dudin
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot OX11 0DE, United Kingdom
| | - J-X Zhu
- Theoretical Division and Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - H Q Yuan
- Center for Correlated Matter, Zhejiang University, Hangzhou 310058, China
- Department of Physics, Zhejiang University, Hangzhou 310027, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
| | - S Kirchner
- Center for Correlated Matter, Zhejiang University, Hangzhou 310058, China
| | - D L Feng
- State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China
- Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
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23
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Fei L, Xu M, Jiang J, Ng SM, Shu L, Sun L, Xie K, Huang H, Leung CW, Mak CL, Wang Y. Three-dimensional macroporous graphene monoliths with entrapped MoS2nanoflakes from single-step synthesis for high-performance sodium-ion batteries. RSC Adv 2018; 8:2477-2484. [PMID: 35541460 PMCID: PMC9077459 DOI: 10.1039/c7ra12617d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 12/30/2017] [Indexed: 01/24/2023] Open
Abstract
Layered metal sulfides (MoS2, WS2, SnS2, and SnS) offer high potential as advanced anode materials in sodium ion batteries upon integration with highly-conductive graphene materials. However, in addition to being costly and time-consuming, existing strategies for synthesizing sulfides/graphene composites often involve complicated procedures. It is therefore essential to develop a simple yet scalable pathway to construct sulfide/graphene composites for practical applications. Here, we highlight a one-step, template-free, high-throughput “self-bubbling” method for producing MoS2/graphene composites, which is suitable for large-scale production of sulfide/graphene composites. The final product featured MoS2 nanoflakes distributed in three-dimensional macroporous monolithic graphene. Moreover, this unique MoS2/graphene composite achieved remarkable electrochemical performance when being applied to Na-ion battery anodes; namely, excellent cycling stability (474 mA h g−1 at 0.1 A g−1 after 100 cycles) and high rate capability (406 mA h g−1 at 0.25 A g−1 and 359 mA h g−1 at 0.5 A g−1). This self-bubbling approach should be applicable to delivering other graphene-based composites for emerging applications such as energy storage, catalysis, and sensing. A single-step, template-free, high-throughput synthesis method is developed to produce graphene/MoS2 composites for improved performances in sodium-ion batteries.![]()
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Affiliation(s)
- Linfeng Fei
- Department of Applied Physics
- The Hong Kong Polytechnic University
- China
| | - Ming Xu
- Department of Applied Physics
- The Hong Kong Polytechnic University
- China
- School of Metallurgical and Environment
- Central South University
| | - Juan Jiang
- Department of Applied Physics
- The Hong Kong Polytechnic University
- China
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials
- Hubei University
| | - Sheung Mei Ng
- Department of Applied Physics
- The Hong Kong Polytechnic University
- China
| | - Longlong Shu
- School of Materials Science and Engineering
- Nanchang University
- Nanchang
- China
| | - Li Sun
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes
- National Laboratory of Mineral Materials
- School of Materials Science and Technology
- China University of Geosciences
- Beijing 100083
| | - Keyu Xie
- State Key Laboratory of Solidification Processing
- Center for Nano Energy Materials
- Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU)
- Xi'an 710072
- China
| | - Haitao Huang
- Department of Applied Physics
- The Hong Kong Polytechnic University
- China
| | - Chi Wah Leung
- Department of Applied Physics
- The Hong Kong Polytechnic University
- China
| | - Chee Leung Mak
- Department of Applied Physics
- The Hong Kong Polytechnic University
- China
| | - Yu Wang
- School of Materials Science and Engineering
- Nanchang University
- Nanchang
- China
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Shen JD, Wu W, Shu L, Cai LL, Xie JZ, Ma L, Sun XP, Cui YG, Liu JY. [Analysis of clinical outcomes of different embryo stage biopsy in array comparative genomic hybridization based preimplantation genetic diagnosis and screening]. Zhonghua Fu Chan Ke Za Zhi 2017; 52:828-834. [PMID: 29325267 DOI: 10.3760/cma.j.issn.0529-567x.2017.12.007] [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 evaluate the efficiency of the application of array comparative genomic hybridization (array-CGH) in preimplantation genetic diagnosis or screening (PGD/PGS), and compare the clinical outcomes of different stage embryo biopsy. Methods: The outcomes of 381 PGD/PGS cycles referred in the First Affiliated Hospital of Nanjing Medical University from July 2011 to August 2015 were retrospectively analyzed. There were 320 PGD cycles with 156 cleavage-stage-biopsy cycles and 164 trophectoderm-biopsy cycles, 61 PGS cycles with 23 cleavage-stage-biopsy cycles and 38 trophectoderm-biopsy cycles. Chromosomal analysis was performed by array-CGH technology combined with whole genome amplification. Single embryo transfer was performed in all transfer cycles. Live birth rate was calculated as the main clinical outcomes. Results: The embryo diagnosis rate of PGD/PGS by array-CGH were 96.9%-99.1%. In PGD biopsy cycles, the live birth rate per embryo transfer cycle and live birth rate per embryo biopsy cycle were 50.0%(58/116) and 37.2%(58/156) in cleavage-stage-biopsy group, 67.5%(85/126) and 51.8%(85/164) in trophectoderm-biopsy group (both P<0.01). In PGS biopsy cycles, the live birth rate per embryo transfer cycle and live birth rate per embryo biopsy cycle were the same as 34.8%(8/23) in cleavage-stage-biopsy group, the same as 42.1%(16/38) in trophectoderm-biopsy group (both P>0.05). Conclusions: High diagnosis rate and idea live birth rate are achieved in PGD/PGS cycles based on array-CGH technology. The live birth rate of trophectoderm-biopsy group is significantly higher than that of cleavage-stage-biopsy group in PGD cycles; the efficiency of trophectoderm-biopsy is better.
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Affiliation(s)
- J D Shen
- The Center of Reproductive Medicine, the First Affiliated Hospital of Nanjing Medical University, State Key Laboratory of Reproductive Medicine, Nanjing 210029, China
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25
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Zi D, Tan J, Shu L, He Z, Jin H. CXCR4 Mediated to Epithelial-Mesenchymal Transition and Stemness in Epithelial Ovarian Carcinoma. J Minim Invasive Gynecol 2017. [DOI: 10.1016/j.jmig.2017.08.106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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Lu H, Wu Y, Zhang Y, Shu L, Liu X, Jiang H, Wu D, Mo Y, Wei Y. Factors Predicting Acute Hematologic Toxicities in Cervical Cancer Treated With Postoperative Intensity-Modulated Radiation Therapy and Concurrent Nedaplatin. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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27
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Liu X, Lu H, Huang H, Shu L, Jiang H, Qin J, Cheng J, Peng L, Deng S, Pang Q, Gu J, Lu Z, Mo Y, Wu D, Wei Y. Three-Phase Adaptive Radiation Therapy for Patients with Nasopharyngeal Carcinoma Undergoing Intensity-Modulated Radiation Therapy: Dosimetric Analysis. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.2269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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28
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Axelsson AS, Mahdi T, Nenonen HA, Singh T, Hänzelmann S, Wendt A, Bagge A, Reinbothe TM, Millstein J, Yang X, Zhang B, Gusmao EG, Shu L, Szabat M, Tang Y, Wang J, Salö S, Eliasson L, Artner I, Fex M, Johnson JD, Wollheim CB, Derry JMJ, Mecham B, Spégel P, Mulder H, Costa IG, Zhang E, Rosengren AH. Sox5 regulates beta-cell phenotype and is reduced in type 2 diabetes. Nat Commun 2017; 8:15652. [PMID: 28585545 PMCID: PMC5467166 DOI: 10.1038/ncomms15652] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2017] [Accepted: 04/10/2017] [Indexed: 01/09/2023] Open
Abstract
Type 2 diabetes (T2D) is characterized by insulin resistance and impaired insulin secretion, but the mechanisms underlying insulin secretion failure are not completely understood. Here, we show that a set of co-expressed genes, which is enriched for genes with islet-selective open chromatin, is associated with T2D. These genes are perturbed in T2D and have a similar expression pattern to that of dedifferentiated islets. We identify Sox5 as a regulator of the module. Sox5 knockdown induces gene expression changes similar to those observed in T2D and diabetic animals and has profound effects on insulin secretion, including reduced depolarization-evoked Ca2+-influx and β-cell exocytosis. SOX5 overexpression reverses the expression perturbations observed in a mouse model of T2D, increases the expression of key β-cell genes and improves glucose-stimulated insulin secretion in human islets from donors with T2D. We suggest that human islets in T2D display changes reminiscent of dedifferentiation and highlight SOX5 as a regulator of β-cell phenotype and function.
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Affiliation(s)
- A S Axelsson
- Lund University Diabetes Center, CRC 91-11 SUS, Jan Waldenströms gata 35, SE-20502 Malmö, Sweden
| | - T Mahdi
- Lund University Diabetes Center, CRC 91-11 SUS, Jan Waldenströms gata 35, SE-20502 Malmö, Sweden.,Medical Research Center, Hawler Medical University, 44001 Erbil, Iraq
| | - H A Nenonen
- Lund University Diabetes Center, CRC 91-11 SUS, Jan Waldenströms gata 35, SE-20502 Malmö, Sweden
| | - T Singh
- Lund University Diabetes Center, CRC 91-11 SUS, Jan Waldenströms gata 35, SE-20502 Malmö, Sweden
| | - S Hänzelmann
- Institute of Biomedical Engineering, RWTH Aachen University Hospital, Pauwelstr 19, 52074 Aachen, Germany
| | - A Wendt
- Lund University Diabetes Center, CRC 91-11 SUS, Jan Waldenströms gata 35, SE-20502 Malmö, Sweden
| | - A Bagge
- Lund University Diabetes Center, CRC 91-11 SUS, Jan Waldenströms gata 35, SE-20502 Malmö, Sweden
| | - T M Reinbothe
- Lund University Diabetes Center, CRC 91-11 SUS, Jan Waldenströms gata 35, SE-20502 Malmö, Sweden
| | - J Millstein
- Sage Bionetworks, 1100 Fairview Avenue N, Seattle, Washington 98109, USA
| | - X Yang
- Sage Bionetworks, 1100 Fairview Avenue N, Seattle, Washington 98109, USA.,Department of Integrative Biology and Physiology, University of California, Los Angeles, 610 Charles E. Young Dr East, Los Angeles, California 90095, USA
| | - B Zhang
- Sage Bionetworks, 1100 Fairview Avenue N, Seattle, Washington 98109, USA.,Department of Genetics and Genomic Sciences, Icahn Institute of Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, 1470 Madison Avenue, New York, New York 10029, USA
| | - E G Gusmao
- Institute of Biomedical Engineering, RWTH Aachen University Hospital, Pauwelstr 19, 52074 Aachen, Germany
| | - L Shu
- Department of Integrative Biology and Physiology, University of California, Los Angeles, 610 Charles E. Young Dr East, Los Angeles, California 90095, USA
| | - M Szabat
- Diabetes Research Group, Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, 5358-2350 Health Sciences Mall, Vancouver, British Columbia, Canada V6T 1Z3
| | - Y Tang
- Lund University Diabetes Center, CRC 91-11 SUS, Jan Waldenströms gata 35, SE-20502 Malmö, Sweden.,Key Lab of Hormones and Development, Ministry of Health, Metabolic Diseases Hospital, Tianjin Medical University, Tianjin 300070, China
| | - J Wang
- Lund University Diabetes Center, CRC 91-11 SUS, Jan Waldenströms gata 35, SE-20502 Malmö, Sweden.,Department of Emergency, Zhongshan Hospital, Xiamen University, Xiamen, Fujian 361004, China
| | - S Salö
- Lund University Diabetes Center, CRC 91-11 SUS, Jan Waldenströms gata 35, SE-20502 Malmö, Sweden
| | - L Eliasson
- Lund University Diabetes Center, CRC 91-11 SUS, Jan Waldenströms gata 35, SE-20502 Malmö, Sweden
| | - I Artner
- Lund University Diabetes Center, CRC 91-11 SUS, Jan Waldenströms gata 35, SE-20502 Malmö, Sweden
| | - M Fex
- Lund University Diabetes Center, CRC 91-11 SUS, Jan Waldenströms gata 35, SE-20502 Malmö, Sweden
| | - J D Johnson
- Diabetes Research Group, Department of Cellular and Physiological Sciences, Life Sciences Institute, University of British Columbia, 5358-2350 Health Sciences Mall, Vancouver, British Columbia, Canada V6T 1Z3
| | - C B Wollheim
- Lund University Diabetes Center, CRC 91-11 SUS, Jan Waldenströms gata 35, SE-20502 Malmö, Sweden.,Department of Cell Physiology and Metabolism, University Medical Center, Rue Michel-Servet 1, 1206 Geneva, Switzerland
| | - J M J Derry
- Sage Bionetworks, 1100 Fairview Avenue N, Seattle, Washington 98109, USA
| | - B Mecham
- Trialomics, 6310 12th Avenue NE, Seattle, Washington 98115, USA
| | - P Spégel
- Lund University Diabetes Center, CRC 91-11 SUS, Jan Waldenströms gata 35, SE-20502 Malmö, Sweden.,Centre for Analysis and Synthesis, Department of Chemistry, Lund University, SE-221 00 Lund, Sweden
| | - H Mulder
- Lund University Diabetes Center, CRC 91-11 SUS, Jan Waldenströms gata 35, SE-20502 Malmö, Sweden
| | - I G Costa
- Institute of Biomedical Engineering, RWTH Aachen University Hospital, Pauwelstr 19, 52074 Aachen, Germany
| | - E Zhang
- Lund University Diabetes Center, CRC 91-11 SUS, Jan Waldenströms gata 35, SE-20502 Malmö, Sweden
| | - A H Rosengren
- Lund University Diabetes Center, CRC 91-11 SUS, Jan Waldenströms gata 35, SE-20502 Malmö, Sweden.,Sage Bionetworks, 1100 Fairview Avenue N, Seattle, Washington 98109, USA.,Department of Neuroscience and Physiology, University of Gothenburg, Box 100, SE-405 30 Gothenburg, Sweden
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Fei L, Ng SM, Lu W, Xu M, Shu L, Zhang WB, Yong Z, Sun T, Lam CH, Leung CW, Mak CL, Wang Y. Atomic-Scale Mechanism on Nucleation and Growth of Mo 2C Nanoparticles Revealed by in Situ Transmission Electron Microscopy. Nano Lett 2016; 16:7875-7881. [PMID: 27960485 DOI: 10.1021/acs.nanolett.6b04160] [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] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
With a similar electronic structure as that of platinum, molybdenum carbide (Mo2C) holds significant potential as a high performance catalyst across many chemical reactions. Empirically, the precise control of particle size, shape, and surface nature during synthesis largely determines the catalytic performance of nanoparticles, giving rise to the need of clarifying the underlying growth characteristics in the nucleation and growth of Mo2C. However, the high-temperature annealing involved during the growth of carbides makes it difficult to directly observe and understand the nucleation and growth processes. Here, we report on the use of advanced in situ transmission electron microscopy with atomic resolution to reveal a three-stage mechanism during the growth of Mo2C nanoparticles over a wide temperature range: initial nucleation via a mechanism consistent with spinodal decomposition, subsequent particle coalescence and monomer attachment, and final surface faceting to well-defined particles with minimum surface energy. These microscopic observations made under a heating atmosphere offer new perspectives toward the design of carbide-based catalysts, as well as the tuning of their catalytic performances.
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Affiliation(s)
- Linfeng Fei
- Department of Applied Physics, The Hong Kong Polytechnic University , Hong Kong SAR, China
| | - Sheung Mei Ng
- Department of Applied Physics, The Hong Kong Polytechnic University , Hong Kong SAR, China
| | - Wei Lu
- Department of Applied Physics, The Hong Kong Polytechnic University , Hong Kong SAR, China
| | - Ming Xu
- Department of Applied Physics, The Hong Kong Polytechnic University , Hong Kong SAR, China
| | - Longlong Shu
- School of Materials Science and Engineering, Nanchang University , Nanchang, Jiangxi 330031, China
| | - Wei-Bing Zhang
- Department of Applied Physics, The Hong Kong Polytechnic University , Hong Kong SAR, China
| | - Zehui Yong
- Department of Applied Physics, The Hong Kong Polytechnic University , Hong Kong SAR, China
| | - Tieyu Sun
- Department of Applied Physics, The Hong Kong Polytechnic University , Hong Kong SAR, China
| | - Chi Hang Lam
- Department of Applied Physics, The Hong Kong Polytechnic University , Hong Kong SAR, China
| | - Chi Wah Leung
- Department of Applied Physics, The Hong Kong Polytechnic University , Hong Kong SAR, China
| | - Chee Leung Mak
- Department of Applied Physics, The Hong Kong Polytechnic University , Hong Kong SAR, China
| | - Yu Wang
- School of Materials Science and Engineering, Nanchang University , Nanchang, Jiangxi 330031, China
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30
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Okpeku M, Esmailizadeh A, Adeola AC, Shu L, Zhang Y, Wang Y, Sanni TM, Imumorin IG, Peters SO, Zhang J, Dong Y, Wang W. P3000 Variation of goat interferon regulatory factor 3 gene and its implication in goat evolution. J Anim Sci 2016. [DOI: 10.2527/jas2016.94supplement450x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Glas R, Sauter NS, Schulthess FT, Shu L, Oberholzer J, Maedler K. Erratum to: Purinergic P2X7 receptors regulate secretion of interleukin-1 receptor antagonist and beta cell function and survival. Diabetologia 2015; 58:2201. [PMID: 26130103 PMCID: PMC4969945 DOI: 10.1007/s00125-015-3681-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- R. Glas
- Department of Medicine, Larry L. Hillblom Islet Research Center, UCLA, Los Angeles, CA USA
| | - N. S. Sauter
- Department of Medicine, Larry L. Hillblom Islet Research Center, UCLA, Los Angeles, CA USA
| | - F. T. Schulthess
- Department of Medicine, Larry L. Hillblom Islet Research Center, UCLA, Los Angeles, CA USA
- Centre for Biomolecular Interactions Bremen, University of Bremen, NW2, Box 33 04 40, 28334 Bremen, Germany
| | - L. Shu
- Department of Medicine, Larry L. Hillblom Islet Research Center, UCLA, Los Angeles, CA USA
- Centre for Biomolecular Interactions Bremen, University of Bremen, NW2, Box 33 04 40, 28334 Bremen, Germany
| | - J. Oberholzer
- Division of Transplantation, University of Illinois at Chicago, Chicago, IL USA
| | - K. Maedler
- Department of Medicine, Larry L. Hillblom Islet Research Center, UCLA, Los Angeles, CA USA
- Centre for Biomolecular Interactions Bremen, University of Bremen, NW2, Box 33 04 40, 28334 Bremen, Germany
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Yao DD, Yang L, Wang Y, Liu C, Wei YJ, Jia XB, Yin W, Shu L. Geniposide promotes beta-cell regeneration and survival through regulating β-catenin/TCF7L2 pathway. Cell Death Dis 2015; 6:e1746. [PMID: 25950476 PMCID: PMC4669687 DOI: 10.1038/cddis.2015.107] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 03/17/2015] [Accepted: 03/18/2015] [Indexed: 01/09/2023]
Abstract
T-cell factor 7-like 2 (TCF7L2) is an important transcription factor of Wnt/β-catenin signaling, which has critical roles in β-cell survival and regeneration. In preliminary screening assay, we found geniposide, a naturally occurring compound, was able to increase TCF7L2 mRNA level in Min6 cells. Here we aimed to investigate the role of geniposide in β-cell and underlying mechanism involved. Geniposide was found to promote β-cell survival by increasing β-cell proliferation and decreasing β-cell apoptosis in cultured mouse islets after challenge with diabetic stimuli. Geniposide protected β-cell through activating Wnt signaling, enhanced expressions of TCF7L2 and GLP-1R, activated AKT, inhibited GSK3β activity, and promoted β-catenin nuclear translocation. The protective effect of geniposide was remarkably suppressed by siRNAs against β-catenin, or by ICG001 (β-catenin/TCF-mediated transcription inhibitor). Moreover, geniposide promoted β-cell regeneration in vivo to normalize blood glucose in high-fat diet and db/db mice. Increased β-cell proliferation was observed in pancreatic sections of geniposide-treated diabetic mice. Most importantly, geniposide triggered small islet-like cell clusters formation as a result of β-cell neogenesis from ductal epithelium, which was well correlated with the increase in TCF7L2 expression. In exocrine cells isolated from mouse pancreas, geniposide could induce duct cell differentiation through upregulating TCF7L2 expression and activating JAK2/STAT3 pathway. Taken together, we identified a novel role of geniposide in promoting β-cell survival and regeneration by mechanisms involving the activation of β-catenin/TCF7L2 signaling. Our finding highlights the potential value of geniposide as a possible treatment for type 2 diabetes.
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Affiliation(s)
- D D Yao
- Key Laboratory of New Drug Delivery System of Chinese Materia Medica, Jiangsu Province Academy of Chinese Medicine, Nanjing, China
| | - L Yang
- Key Laboratory of New Drug Delivery System of Chinese Materia Medica, Jiangsu Province Academy of Chinese Medicine, Nanjing, China
| | - Y Wang
- Jiangsu Key Laboratory of Xenotransplantation, Nanjing Medical University, Nanjing, China
| | - C Liu
- Department of Endocrinology, Jiangsu Province Hospital on Integration of Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Y J Wei
- Key Laboratory of New Drug Delivery System of Chinese Materia Medica, Jiangsu Province Academy of Chinese Medicine, Nanjing, China
| | - X B Jia
- Key Laboratory of New Drug Delivery System of Chinese Materia Medica, Jiangsu Province Academy of Chinese Medicine, Nanjing, China
| | - W Yin
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, China
| | - L Shu
- Key Laboratory of New Drug Delivery System of Chinese Materia Medica, Jiangsu Province Academy of Chinese Medicine, Nanjing, China
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Shu L, Sulaiman AH, Huang YS, Fones Soon Leng C, Crutel VS, Kim YS. Comparable efficacy and safety of 8 weeks treatment with agomelatine 25-50mg or fluoxetine 20-40mg in Asian out-patients with major depressive disorder. Asian J Psychiatr 2014; 8:26-32. [PMID: 24655622 DOI: 10.1016/j.ajp.2013.09.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 09/13/2013] [Accepted: 09/22/2013] [Indexed: 11/24/2022]
Abstract
OBJECTIVE This randomized, double-blind study evaluates the efficacy and tolerability of agomelatine, using fluoxetine as an active comparator, in Asian patients suffering from moderate to severe major depressive disorder (MDD). METHOD Patients were randomly assigned to receive either agomelatine (25-50mg/day, n=314) or fluoxetine (20-40mg/day, n=314) during an 8-week treatment period. The main outcome measure was the change in Hamilton Depression Rating Scale 17 items (HAM-D17) scores. Secondary efficacy criteria included scores on Clinical Global Impression Severity of illness (CGI-S) and Improvement of illness (CGI-I), patient sleeping improvement using the self-rating Leeds Sleep Evaluation Questionnaire (LSEQ) and anxiety using the Hamilton Anxiety Rating Scale (HAM-A) scores. Tolerability and safety evaluations were based on emergent adverse events. RESULTS Agomelatine and fluoxetine exert a comparable antidepressant efficacy in the Asian population. Mean changes over 8 weeks were clinically relevant and similar in both groups (-14.8±7.3 and -15.0±8.1 on HAM-D17 scale in agomelatine and fluoxetine groups, respectively). The between-group difference reached statistical significance on non-inferiority test (p=0.015). Clinically relevant decreases in CGI-S and CGI-I scores were observed over the treatment period in both groups. The two treatments were equally effective on the symptoms of both anxiety and sleep. The good tolerability profile and safety of both doses of agomelatine was confirmed in the Asian population. CONCLUSIONS Agomelatine and fluoxetine are equally effective in the treatment of MDD-associated symptoms in Asian depressed patients.
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Affiliation(s)
- L Shu
- The Sixth Hospital of Peking, Institute of Mental Health, Peking University, No. 51 Hua Yuan Bei Road, Haidian District, Beijing 100083, China.
| | - A H Sulaiman
- University Malaya Medical Centre, Department of Psychological Medicine, Jalan University, 50603 Kuala Lumpur, Malaysia
| | - Y S Huang
- Department of Psychiatry, Chang Gung Memorial Hospital, 199, Tung-Hwa North Road, 105 Tapei, Taiwan
| | - C Fones Soon Leng
- Gleneagles Medical Centre, Department of Psychiatry, #4-11, 6 Napier Road, 258499, Singapore
| | - V Strijckmans Crutel
- Institut de Recherches Internationales Servier (IRIS), 50 Rue Carnot, 92284 Suresnes Cedex, France
| | - Y S Kim
- Seoul National University, Department of Psychiatry, 28 Yongon-Dong, Chongno-Gu, Seoul 110-744, Republic of Korea
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Hu JM, Shu L, Li Z, Gao Y, Shen Y, Lin YH, Chen LQ, Nan CW. Film size-dependent voltage-modulated magnetism in multiferroic heterostructures. Philos Trans A Math Phys Eng Sci 2014; 372:20120444. [PMID: 24421375 PMCID: PMC3895976 DOI: 10.1098/rsta.2012.0444] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The electric-voltage-modulated magnetism in multiferroic heterostructures, also known as the converse magnetoelectric (ME) coupling, has drawn increasing research interest recently owing to its great potential applications in future low-power, high-speed electronic and/or spintronic devices, such as magnetic memory and computer logic. In this article, based on combined theoretical analysis and experimental demonstration, we investigate the film size dependence of such converse ME coupling in multiferroic magnetic/ferroelectric heterostructures, as well as exploring the interaction between two relating coupling mechanisms that are the interfacial strain and possibly the charge effects. We also briefly discuss some issues for the next step and describe new device prototypes that can be enabled by this technology.
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Affiliation(s)
- J.-M. Hu
- Department of Materials Science and Engineering, and State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, People's Republic of China
| | - L. Shu
- Department of Materials Science and Engineering, and State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, People's Republic of China
| | - Z. Li
- Department of Materials Science and Engineering, and State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, People's Republic of China
| | - Y. Gao
- Department of Materials Science and Engineering, and State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, People's Republic of China
| | - Y. Shen
- Department of Materials Science and Engineering, and State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, People's Republic of China
| | - Y. H. Lin
- Department of Materials Science and Engineering, and State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, People's Republic of China
| | - L. Q. Chen
- Department of Materials Science and Engineering, and State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, People's Republic of China
- Department of Materials Science and Engineering, Pennsylvania State University, University Park, PA 16802, USA
| | - C. W. Nan
- Department of Materials Science and Engineering, and State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, People's Republic of China
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Zhang LY, Tian W, Shu L, Jiang LP, Zhan YZ, Liu W, Zhao XD, Cui YX, Tang XM, Wang M, Wu DQ, Yang XQ. Clinical features, STAT3 gene mutations and Th17 cell analysis in nine children with hyper-IgE syndrome in mainland China. Scand J Immunol 2013; 78:258-65. [PMID: 23659370 DOI: 10.1111/sji.12063] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Accepted: 04/08/2013] [Indexed: 01/14/2023]
Abstract
Hyper-IgE syndrome (HIES) is a rare primary immunodeficiency disease characterized by eczema, recurrent staphylococcal aureus skin abscesses, pneumonia with pneumatocele formation, remarkably high serum IgE levels, eosinophilia and involvement of skeleton and connective tissues. Heterozygous signal transducer and activator of transcription 3 (STAT3) mutations were shown to be the cause of autosomal dominant HIES (AD-HIES). In this study, we diagnosed nine patients with HIES from 9 unrelated families on the basis of a National Institutes of Health (NIH) score of ≥40 points, sequenced the STAT3 gene of all nine patients, and quantified Th17 cells in peripheral blood of seven patients by flow cytometry in mainland China. All nine patients had characteristic manifestation of HIES with the range of NIH scores 45-77 points. STAT3 hot mutations V637M or R382W/Q were identified in five patients. We identified two novel heterozygous missense mutations (T620S and R609G) located in Src homology 2 (SH2) domain in two patients, respectively. In two other patients, no STAT3 mutations were found. Quantified Th17 cell numbers were markedly decreased or absent (0-0.28% of CD4(+) T cells) in six patients with STAT3 mutations and almost normal (0.53% of CD4(+) T cells) in one wild-type STAT3 patient compared with healthy controls (0.40-2.25% of CD4(+) T cells). These results suggest that not all patients with HIES who had NIH scores over 40 points carry STAT3 mutations, those whose Th17 cell numbers strikingly decreased probably had AD-HIES with STAT3 mutations.
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Affiliation(s)
- L-Y Zhang
- Clinical Immunology Laboratory, Ministry of Education Key Laboratory of Child Development and Disorders, Key Laboratory of Pediatrics in Chongqing, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Children's Hospital of Chongqing Medical University, Chongqing, China
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Xu J, Guo HC, Wei YQ, Shu L, Wang J, Li JS, Cao SZ, Sun SQ. Phylogenetic Analysis of Canine Parvovirus Isolates from Sichuan and Gansu Provinces of China in 2011. Transbound Emerg Dis 2013; 62:91-5. [DOI: 10.1111/tbed.12078] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2012] [Indexed: 11/29/2022]
Affiliation(s)
- J. Xu
- State Key Laboratory of Veterinary Etiological Biology; Lanzhou Veterinary Research Institute; Chinese Academy of Agricultural Sciences; Lanzhou China
- College of Veterinary medicine; Sichuan Agricultural University; ya'an China
| | - H.-C. Guo
- State Key Laboratory of Veterinary Etiological Biology; Lanzhou Veterinary Research Institute; Chinese Academy of Agricultural Sciences; Lanzhou China
| | - Y.-Q. Wei
- State Key Laboratory of Veterinary Etiological Biology; Lanzhou Veterinary Research Institute; Chinese Academy of Agricultural Sciences; Lanzhou China
| | - L. Shu
- State Key Laboratory of Veterinary Etiological Biology; Lanzhou Veterinary Research Institute; Chinese Academy of Agricultural Sciences; Lanzhou China
- College of Veterinary medicine; Sichuan Agricultural University; ya'an China
| | - J. Wang
- Gansu Agriculture Technology College; Lanzhou China
| | - J.-S. Li
- College of Veterinary medicine; Sichuan Agricultural University; ya'an China
| | - S.-Z. Cao
- College of Veterinary medicine; Sichuan Agricultural University; ya'an China
| | - S.-Q. Sun
- State Key Laboratory of Veterinary Etiological Biology; Lanzhou Veterinary Research Institute; Chinese Academy of Agricultural Sciences; Lanzhou China
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De Mukhopadhyay K, Elkahloun AG, Hinck AP, Yoon K, Cornell JE, Shu L, Yang J, Sun L. Abstract P1-05-18: Determining the molecular mechanism of the breast cancer-induced brain metastasis and a role of a novel pan-TGF-β inhibitor as a potential therapy for brain metastasis in a mouse xenograft model. Cancer Res 2012. [DOI: 10.1158/0008-5472.sabcs12-p1-05-18] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Breast cancer (BCa) is the most common malignant disease in women in the U.S. Nearly 20% of patients with advanced BCa are eventually diagnosed with brain lesions, which is a devastating complication in patients with BCa over-expressing EGF receptor family members including Her2 positive and triple negative breast cancer. It is the most feared complication of BCa in part because are not capable of significantly treating the BCa-induced brain metastases due to the inability of the available treatment regimens to effectively penetrate the blood brain barrier (BBB) and also due to our limited knowledge on cellular and molecular mechanisms that drive the homing to and growth in the brain of BCa cells. Therefore, there is a need of efficient model system that can significantly contribute towards our understanding of different factors from both host and tumor leading to brain metastasis. We have recently isolated a novel BCa cell line B6TC that was generated through fusion between human BCa, MDA-MB-231 and ZR-75-1 cells in mouse bone marrow. This B6TC cell line showed higher propensity to metastasize to brain than its parental cells when inoculated through intracardiac injection in female athymic nude mice. In order to generate a highly brain metastatic breast cancer model for mechanistic research, we subjected the B6TC cells through four rounds of selection for cells that were capable of trans-endothelial cell invasion to obtain cells that could invade through BBB. This in vitro selected cell line was further subjected through three rounds of in vivo selection for cells that were capable of metastasizing to the brain and the cells after third round selection was named N3LR, which has the highest potential to cause brain metastasis. In searching for genes and pathways that may contribute to the increased brain metastasis of N3-LR cell with microarray analysis, we found that the transforming growth factor-beta (TGFβ) signaling pathway is upregulated in N3-LR cell in comparison with B6TC cell, in addition to the EGF and prostaglandin signaling pathways that have been reported to be associated with brain metastatic breast cancer cells. Functional comparison also showed that N3-LR cell was more migratory than B6TC cell and more responsive to TGFβ-induced phosphorylation of Smad3 as well as migration, suggesting that TGFβ signaling may contribute to the increased brain metastatic potential. We next investigated whether metastatic tumor growth in the brain microenvironment can be inhibited by systemic administration of a potent pan-TGFβ inhibitor, BGERII- a recombinant fusion protein containing the endoglin domain of betaglycan (BGE) and the extracellular domain of RII. The animals were inoculated intracardically with N3LR, the most potent subline of highly metastatic B6TC cells, and were then treated with vehicle or BGERII systemically via i.p. injection right after the inoculation. After three weeks, the BGERII treated group showed lower brain metastasis incidence and tumor burden as detected by whole mouse bioluminescence and GFP imaging. Further analyses to understand the underlying molecular and regulatory mechanism of brain metastasis and its intervention in our mouse model is underway for the discovery of novel molecularly targeted drugs to prevent and eradicate BCa metastasis initiation, progression and recurrence.
Citation Information: Cancer Res 2012;72(24 Suppl):Abstract nr P1-05-18.
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Affiliation(s)
- K De Mukhopadhyay
- University of Texas Health Science Center, San Antonio, TX; National Human Genome Research Institute-NIH, Bethesda, MD
| | - AG Elkahloun
- University of Texas Health Science Center, San Antonio, TX; National Human Genome Research Institute-NIH, Bethesda, MD
| | - AP Hinck
- University of Texas Health Science Center, San Antonio, TX; National Human Genome Research Institute-NIH, Bethesda, MD
| | - K Yoon
- University of Texas Health Science Center, San Antonio, TX; National Human Genome Research Institute-NIH, Bethesda, MD
| | - JE Cornell
- University of Texas Health Science Center, San Antonio, TX; National Human Genome Research Institute-NIH, Bethesda, MD
| | - L Shu
- University of Texas Health Science Center, San Antonio, TX; National Human Genome Research Institute-NIH, Bethesda, MD
| | - J Yang
- University of Texas Health Science Center, San Antonio, TX; National Human Genome Research Institute-NIH, Bethesda, MD
| | - L Sun
- University of Texas Health Science Center, San Antonio, TX; National Human Genome Research Institute-NIH, Bethesda, MD
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Shu L, Zien K, Gutjahr G, Oberholzer J, Pattou F, Kerr-Conte J, Maedler K. TCF7L2 promotes beta cell regeneration in human and mouse pancreas. Diabetologia 2012; 55:3296-307. [PMID: 22945304 DOI: 10.1007/s00125-012-2693-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2012] [Accepted: 07/17/2012] [Indexed: 11/25/2022]
Abstract
AIMS/HYPOTHESIS Diabetes is characterised by loss and dysfunction of the beta cell. A major goal of diabetes therapy is to promote the formation of new beta cells. Polymorphisms of T cell factor 7-like 2 (TCF7L2) are associated with type 2 diabetes, negatively regulating beta cell survival and function. Here, we provide evidence for a role of TCF7L2 in beta cell proliferation and regeneration. METHODS Pancreatic sections from three mouse models (high-fat diet, exendin-4 and streptozotocin-treated mice) and from healthy individuals and patients with type 2 diabetes were used to investigate the association of beta cell regeneration and TCF7L2 levels. To analyse a direct effect of TCF7L2 on duct cell to beta cell conversion, TCF7L2 was overexpressed in isolated exocrine cells. RESULTS TCF7L2 levels correlated with beta cell compensation during high-fat diet feeding. TCF7L2 was increased together with pancreatic duct cell proliferation and differentiation. Small islet-like cell clusters (ICCs) that contained TCF7L2 originated in the vicinity of the ductal epithelium. In human isolated exocrine tissue, TCF7L2 overexpression induced proliferation of pancreatic duct cells and ICC formation next to duct cells, an effect dependent on the JAK2/STAT3 pathway. CONCLUSIONS/INTERPRETATION The present study demonstrates that TCF7L2 overexpression fosters beta cell regeneration. Our findings imply correlation of TCF7L2 levels and new beta cell formation.
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Affiliation(s)
- L Shu
- Centre for Biomolecular Interactions Bremen, University of Bremen, Leobener Strasse NW2, Bremen, Germany
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Navaratna D, Shu L, Baskaran K, Jegatheesan V. Treatment of ametryn in wastewater by a hybrid MBR system: a lab-scale study. Water Sci Technol 2012; 66:1317-1324. [PMID: 22828312 DOI: 10.2166/wst.2012.318] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Agricultural discharge of herbicides to the Great Barrier Reef (GBR) poses significant threat to the marine ecosystem. This study evaluates the performance of a hybrid treatment system consists of a membrane bioreactor (MBR), UV disinfection unit and a granular activated carbon (GAC) column in treating ametryn which is one of the major herbicides in agricultural discharges. While the MBR alone removes only 40% of ametryn at a hydraulic retention time of 7.8 h, the hybrid system removed ametryn to below detection levels.
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Affiliation(s)
- D Navaratna
- School of Engineering, Deakin University, Waurn Pond Campus, Geelong, VIC 3220, Australia
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Goehring I, Sauter NS, Catchpole G, Assmann A, Shu L, Zien KS, Moehlig M, Pfeiffer AFH, Oberholzer J, Willmitzer L, Spranger J, Maedler K. Identification of an intracellular metabolic signature impairing beta cell function in the rat beta cell line INS-1E and human islets. Diabetologia 2011; 54:2584-94. [PMID: 21796486 DOI: 10.1007/s00125-011-2249-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2010] [Accepted: 06/06/2011] [Indexed: 12/12/2022]
Abstract
AIMS/HYPOTHESIS Chronic hyperglycaemia promotes the progressive failure of pancreatic beta cells in patients with type 2 diabetes mellitus, a clinically highly relevant phenomenon known as glucotoxicity. The intracellular metabolic consequences of a chronically high availability of glucose in beta cells are, as yet, poorly understood in its full complexity. METHODS An unbiased metabolite profiling analysis (GC-time-of-flight-MS) was used to identify the time course of core metabolite patterns in rat beta cell line INS-1E during exposure to high glucose concentrations and its relation to insulin expression. RESULTS We report here that pentose phosphate pathway (PPP) metabolites accumulate remarkably during chronic but not acute glucose treatment, indicating altered processing of glucose through the pentose phosphate pathway. Subsequent functional studies in INS-1E cells and human islets revealed that a disturbance in this pathway contributes to decreases in insulin gene expression and a lack of glucose-stimulated insulin secretion. These effects were found to depend on the activation of extracellular-regulated-kinase (ERK1/2). Long-term inhibition of 6-phosphogluconic acid dehydrogenase resulted in accumulation of PPP metabolites, induced ERK1/2 activation independently of high glucose and impaired beta cell function. In turn, inhibition of ERK1/2 overstimulation during chronic glucose exposure partly inhibited metabolite accumulation and restored beta cell function. CONCLUSIONS/INTERPRETATION Based on unbiased metabolite analyses, the data presented here provide novel targets, namely the inhibition of PPP metabolite accumulation towards the therapeutic goal to preserve and potentially improve beta cell function in diabetes.
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Affiliation(s)
- I Goehring
- Department of Endocrinology, Diabetes and Nutrition, Charité-Universitaetsmedizin Berlin, Nuthetal, Germany
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He G, Shu L, Liao L, Yin X, Sheng L, Wang X. Somatic cell cryopreservation and protoplast regeneration of important disease-resistant wild riceOryza meyeriana Baill. ACTA ACUST UNITED AC 2011; 41:393-9. [PMID: 18726256 DOI: 10.1007/bf02882739] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/1997] [Indexed: 10/22/2022]
Abstract
Oryza meyeriana Baill is one of the three wild rice species found in Chiia.O. mcyeriana possesses valuable characteristics but is reluctant in cell culturein vitro. In a series of experiments, callus with no regeneration ability was induced from young panicle ofO. meyeriana. The callus was subcultured and propagated. Embryogenic cell clones were obtained after cryopreswation. Suspension cultures were established and protoplasts were isolated and regenerated into plants. Results of artificial inoculation ofXanthomonas campestris pv.Oryzae showed that the strong resistance did not change in the regenerated plants. The development of protoplast-to-plant system is an important progress towards utilization ofO. meyeriana via cellular engineering. The experiments demonstrated that cryopreservation of plant calli was a new way to obtain embryogenic cell line.
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Affiliation(s)
- G He
- College of Life Sciences, Wuhan University, 430072, Wuhan, China
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Jegatheesan V, Shu L, Virkutyte J, Chang CY. Special issue on the Challenges in Environmental Science and Engineering, CESE-2010: 26 September-1 October, 2010--The Sebel, Cairns, Queensland, Australia. Bioresour Technol 2011; 102:5277. [PMID: 21353773 DOI: 10.1016/j.biortech.2011.02.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
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Shu L, Baumbach RE, Janoschek M, Gonzales E, Huang K, Sayles TA, Paglione J, O'Brien J, Hamlin JJ, Zocco DA, Ho PC, McElroy CA, Maple MB. Correlated electron state in Ce(1-x)Yb(x)CoIn5 stabilized by cooperative valence fluctuations. Phys Rev Lett 2011; 106:156403. [PMID: 21568584 DOI: 10.1103/physrevlett.106.156403] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2010] [Indexed: 05/30/2023]
Abstract
X-ray diffraction, electrical resistivity, magnetic susceptibility, and specific heat measurements on Ce(1-x)Yb(x)CoIn5 (0≤x≤1) reveal that many of the characteristic features of the x=0 correlated electron state are stable for x≤0.775 and that phase separation occurs for x>0.775. The stability of the correlated electron state is apparently due to cooperative behavior of the Ce and Yb ions, involving their unstable valences. Low-temperature non-Fermi liquid behavior is observed and varies with x, even though there is no readily identifiable quantum critical point. The superconducting critical temperature T(c) decreases linearly with x towards 0 K as x→1, in contrast with other HF superconductors where T(c) scales with T(coh).
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Affiliation(s)
- L Shu
- Department of Physics, University of California, San Diego, La Jolla, California 92093, USA
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Baumbach RE, Hamlin JJ, Shu L, Zocco DA, O'Brien JR, Ho PC, Maple MB. Unconventional T-H phase diagram in the noncentrosymmetric compound Yb2Fe12P7. Phys Rev Lett 2010; 105:106403. [PMID: 20867534 DOI: 10.1103/physrevlett.105.106403] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2010] [Indexed: 05/29/2023]
Abstract
The temperature-(T-)magnetic-field (H) phase diagram for the noncentrosymmetric compound Yb(2)Fe(12)P(7), [corrected] determined from electrical resistivity (ρ), specific heat (C), and magnetization (M) measurements on single crystal specimens, is reported. This system exhibits a crossover from a magnetically ordered non-Fermi-liquid (NFL) phase at low H to another NFL phase at higher H. The crossover occurs near the value of H where the magnetic ordering temperature (T(M)) is no longer observable in C(T,H)/T and ρ(T,H), but not where T(M) extrapolates smoothly to T=0 K at a possible quantum critical point (QCP). This indicates the occurrence of a quantum phase transition between the two NFL phases. The lack of a clear relationship between the extrapolated QCP and NFL behavior suggests an unconventional route to the NFL ground states.
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Affiliation(s)
- R E Baumbach
- Department of Physics, University of California, San Diego, La Jolla, California 92093, USA
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Jegatheesan V, Shu L, Ngo HH. Special issue on the Challenges in Environmental Science and Engineering, CESE-2009 14-17 July, 2009--Jupiters Hotel, Townsville, Queensland, Australia. Bioresour Technol 2010; 101:1415. [PMID: 19766488 DOI: 10.1016/j.biortech.2009.08.092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
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Sim L, Shu L, Jegatheesan V, Phong DD. Effect of Operating Parameters and Cleaning on the Performance of Ceramic Membranes Treating Partially Clarified Sugar Cane Juice. SEP SCI TECHNOL 2009. [DOI: 10.1080/01496390903183295] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Glas R, Sauter NS, Schulthess FT, Shu L, Oberholzer J, Maedler K. Purinergic P2X7 receptors regulate secretion of interleukin-1 receptor antagonist and beta cell function and survival. Diabetologia 2009; 52:1579-88. [PMID: 19396427 PMCID: PMC2709906 DOI: 10.1007/s00125-009-1349-0] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2009] [Accepted: 03/03/2009] [Indexed: 01/06/2023]
Abstract
AIMS/HYPOTHESIS In obesity, beta cells activate compensatory mechanisms to adapt to the higher insulin demand. Interleukin-1 receptor antagonist (IL-1Ra) prevents obesity-induced hyperglycaemia and is a potent target for the treatment of diabetes, but the mechanisms of its secretion and regulation in obesity are unknown. In the present study, we hypothesise the regulation of IL-1Ra secretion by purinergic P2X(7) receptors in islets. METHODS Production and regulation of P2X(7) were studied in pancreatic sections from lean and obese diabetic patients, non-diabetic controls and in isolated islets. IL-1Ra, IL-1beta and insulin secretion, glucose tolerance and beta cell mass were studied in P2x7 (also known as P2Rx7)-knockout mice. RESULTS P2X(7) levels were elevated in beta cells of obese patients, but downregulated in patients with type 2 diabetes mellitus. Elevated glucose and non-esterified fatty acids rapidly activated P2X(7) and IL-1Ra secretion in human islets, and this was inhibited by P2X(7) blockade. In line with our results in vitro, P2x7-knockout mice had a lower capacity to secrete IL-1Ra. They exhibited severe and rapid hyperglycaemia, glucose intolerance and impaired beta cell function in response to a high-fat/high-sucrose diet, were unable to compensate by increasing their beta cell mass in response to the diet and showed increased beta cell apoptosis. CONCLUSIONS/INTERPRETATION Our study shows a tight correlation of P2X(7) activation, IL-1Ra secretion and regulation of beta cell mass and function. The increase in P2X(7) production is one mechanism that may explain how beta cells compensate by adapting to the higher insulin demand. Disturbances within that system may result in the progression of diabetes.
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Affiliation(s)
- R Glas
- Department of Medicine, Larry L. Hillblom Islet Research Center, UCLA, Los Angeles, CA, USA
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