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Abstract
The induced pluripotent stem cells (iPSCs) have an intrinsic capability for indefinite self-renewal and large-scale expansion and can differentiate into all types of cells. Here, we tested the potential of iPSCs from dental pulp stem cells (DPSCs) to differentiate into functional odontoblasts. DPSCs were reprogrammed into iPSCs via electroporation of reprogramming factors OCT-4, SOX2, KLF4, LIN28, and L-MYC. The iPSCs presented overexpression of the reprogramming genes and high protein expressions of alkaline phosphatase, OCT4, and TRA-1-60 in vitro and generated tissues from 3 germ layers in vivo. Dentin discs with poly-L-lactic acid scaffolds containing iPSCs were implanted subcutaneously into immunodeficient mice. After 28 d from implantation, the iPSCs generated a pulp-like tissue with the presence of tubular dentin in vivo. The differentiation potential after long-term expansion was assessed in vitro. iPSCs and DPSCs of passages 4 and 14 were treated with either odontogenic medium or extract of bioactive cement for 28 d. Regardless of the passage tested, iPSCs expressed putative markers of odontoblastic differentiation and kept the same mineralization potential, while DPSC P14 failed to do the same. Analysis of these data collectively demonstrates that human iPSCs can be a source to derive human odontoblasts for dental pulp research and test bioactivity of materials.
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Affiliation(s)
- H. Xie
- Oral Sciences, Faculty of Dentistry, National University of Singapore, Singapore
| | - N. Dubey
- Oral Sciences, Faculty of Dentistry, National University of Singapore, Singapore
| | - W. Shim
- National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore
- Cardiovascular and Metabolic Disorders Program, Duke-NUS Medical School, Singapore
| | - C.J.A. Ramachandra
- National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore
| | - K.S. Min
- Department of Conservative Dentistry, School of Dentistry and Institute of Oral Bioscience, Chonbuk National University, Jeonju, Korea
| | - T. Cao
- Oral Sciences, Faculty of Dentistry, National University of Singapore, Singapore
| | - V. Rosa
- Oral Sciences, Faculty of Dentistry, National University of Singapore, Singapore
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Nong Y, Lin JT, Chen P, Zhou X, Wan HY, Yin KS, Ma LJ, Wu CG, Li J, Liu CT, Su N, Liu GL, Xie H, Tang W, Huang M, Chen YH, Liu LJ, Song Y, Chen XL, Zhang YM, Wang WY, Li W, Sun LC. [The relationship between smoking status and epidermiology of asthma in people aged over 14 years in China]. Zhonghua Nei Ke Za Zhi 2017; 56:485-489. [PMID: 28693055 DOI: 10.3760/cma.j.issn.0578-1426.2017.07.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the relationship between bronchial asthma and smoking status in Chinese people. Methods: Asthma epidemiological survey and stratified-cluster-random method survey were performed in residents over 14 years in 8 provinces (cities) of China from February 2010 to August 2012. Asthma was diagnosed based upon case history, clinical signs and lung function test. Smoking status was investigated by questionnaire. Results: Sampling population was 180 099 and 164 215 were valid. A total of 2 034 subjects were diagnosed as asthma including 79 692 men and 84 523 women. The overall prevalence rate of asthma was 1.24% (2 034/164 215). Smokers were 23.8% (39 137/164 215) in the whole population. Smokers were 34.5% (702/2 034) in asthmatic patients, compared with 23.7% (38 435/162 181) in no-asthmatic population. The incidence of asthma was 1.79% and 1.06% in smokers and non-smokers respectively (P<0.001), suggesting that OR of smoking was 1.70 (95% CI 1.55-1.86, P<0.001). According to asthma control test (ACT) score, the level of asthma control in non smoking group was higher than that in smoking group(43.2% vs 35.3%). The times of hospitalization due to acute exacerbations(0.51 vs 0.41 events/person/year), total hospitalization rate(27.35% vs 20.12%), annual emergency room visits (0.80 vs 0.60 events/person/year) and emergency room visit rate (31.77% vs 24.47%) were all much higher in smoking asthmatic patients than those in non smoking asthmatic patients, indicating that the level of asthma control in smoking patients was significantly worse than in non smoking patients. Conclusions: The smoking rate in Chinese people over 14 years is still high. The prevalence rate of asthma in smokers is significantly higher than that of non-smokers. The level of asthma control in smokers is significantly worse than that in non smokers.
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Affiliation(s)
| | - J T Lin
- Department of Respiratory and Critical Care Medicine, China-Japan Friendship Hospital, Beijing 100029, China
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Su N, Lin JT, Wang WY, Chen P, Zhou X, Wan HY, Yin KS, Ma LJ, Wu CG, Li J, Liu CT, Zhang YM, Liu GL, Xie H, Tang W, Huang M, Chen Y, Liu YH, Song LQ, Chen XL. [A cross-section study of severe asthma in eight provinces of China]. Zhonghua Nei Ke Za Zhi 2017; 55:917-921. [PMID: 27916044 DOI: 10.3760/cma.j.issn.0578-1426.2016.12.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the prevalence of severe asthmain China. Methods: The epidemiological data was collected from 2 034 asthmatics who were diagnosed in the last epidemiological survey from 2009 to 2010 in 8 provinces. Results: According to the questionnaire survey, among the 2 034 patients, the previously diagnosed patients accounted for 72.47% (1 474/2 034) and the percentage of newly-diagnosed patients was 27.53% (560/2 034). In those 1 474 previously diagnosed asthmatics, 122 (8.28%) were classified into severe asthma, while 6.00% (122/2 034) of all asthmatics and 0.07% (122/164 215) of total respondents presented as severe cases. Statistically, there was no difference in the prevalence of severe patients between men and women. The morbidity rate of severe asthma was the lowest in the 21-30 year old group and the highest in 61-70 year old group (0.85% and 8.31% respectively). The difference among ages was statistically significant (χ2=18.791, P=0.005). In addition, the prevalence rates of severe asthma were also significantly diverged among patients with different education background(χ2=24.639, P<0.000 1). A negative relation was found between education level and the proportion of severe cases. Moreover, the morbidity of severe asthma in smoking patients and non-smoking patients were significantly different as well (χ2=7.447, P<0.05). Compared with asthma patients who do not smoke, smokers were more likely to suffer severe asthma (OR=1.663, 95% CI 1.150-2.404). Conclusions: The prevalence rate of severe asthma in China is similar to that in other countries.Elderly patients have higher risk of severe asthma. Smoking is considered as a risk factor for severe asthma.
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Affiliation(s)
| | - J T Lin
- Department of Respiratory Medicine, China-Japan Friendship Hospital, Beijing 100029, China
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Cao J, Xiao L, He B, Zhang G, Dong J, Wu Y, Xie H, Wang G, Lin X. Diagnostic value of combined diffusion-weighted imaging with dynamic contrast enhancement MRI in differentiating malignant from benign bone lesions. Clin Radiol 2017; 72:793.e1-793.e9. [PMID: 28545685 DOI: 10.1016/j.crad.2017.04.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 12/26/2016] [Accepted: 04/18/2017] [Indexed: 11/30/2022]
Abstract
AIM To determine the diagnostic value of combined diffusion-weighted imaging (DWI) with dynamic contrast enhancement magnetic resonance imaging (DCE-MRI) in differentiating malignant from benign bone lesions. MATERIALS AND METHODS DWI and DCE-MRI were performed in 36 patients (14 were benign and 22 were malignant). The mean apparent diffusion coefficient (ADC) values and signal enhanced extent (SEE), slope value, and time-signal intensity curve (TIC) type were recorded by two observers. Between-group comparison was made using the independent sample t-test and receiver-operating characteristic (ROC) analysis. RESULTS There was a significant difference between the mean ADC value of the benign ([1.75±0.50]×10-3 mm2/s) and malignant ([1.11±0.47]×10-3 mm2/s) groups (p=0.001). The threshold ADC value of ≤1.10×10-3 mm2/s resulted in a sensitivity of 77.3%, a specificity of 92.9%, and an accuracy of 85.1%. A type III curve was found in 23 cases (21 malignant and two benign), a type II curve was seen in six cases (one malignant and five benign), and a type I curve in seven cases (all were benign). The SEE and slope values in the benign and malignant groups were 227.96±172.08, 325.60±125.86 (p=0.058); 0.97±0.67%/s, 3.19±3.20%/s (p=0.016), respectively. ROC analysis showed a sensitivity of 95.5%, a specificity of 85.7%, and an accuracy of 90.6% for malignancy, based on a slope cut-off value of >1.46%/s. Combining ADC and slope values resulted in a sensitivity of 100%, a specificity of 85.7%, and an accuracy of 92.9%. CONCLUSIONS Both DWI and DCE-MRI showed promising results for differentiating malignant from benign bone lesions. A combination of DWI and DCE-MRI was the most valuable of the three.
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Affiliation(s)
- J Cao
- Shandong Medical Imaging Research Institute, Shandong University, No. 44 West Wenhua Road, Jinan, 250012 PR China; Central Hospital of Zibo, No. 54 West Gongqingtuan Road, Zibo, 255020 PR China
| | - L Xiao
- Shandong Medical Imaging Research Institute, Shandong University, No. 44 West Wenhua Road, Jinan, 250012 PR China
| | - B He
- Central Hospital of Zibo, No. 54 West Gongqingtuan Road, Zibo, 255020 PR China
| | - G Zhang
- Central Hospital of Zibo, No. 54 West Gongqingtuan Road, Zibo, 255020 PR China
| | - J Dong
- Shandong Medical Imaging Research Institute, Shandong University, No. 44 West Wenhua Road, Jinan, 250012 PR China
| | - Y Wu
- Shandong Medical Imaging Research Institute, Shandong University, No. 44 West Wenhua Road, Jinan, 250012 PR China
| | - H Xie
- Shandong Medical Imaging Research Institute, Shandong University, No. 44 West Wenhua Road, Jinan, 250012 PR China
| | - G Wang
- Shandong Medical Imaging Research Institute, Shandong University, No. 44 West Wenhua Road, Jinan, 250012 PR China
| | - X Lin
- Shandong Medical Imaging Research Institute, Shandong University, No. 44 West Wenhua Road, Jinan, 250012 PR China.
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Wang BB, Xie H, Wu T, Xie N, Wu J, Gu Y, Tang F, Liu J. Controlled-release mitomycin C-polylactic acid film prevents epidural scar hyperplasia after laminectomy by inducing fibroblast autophagy and regulating the expression of miRNAs. Eur Rev Med Pharmacol Sci 2017; 21:2526-2537. [PMID: 28617531] [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: 06/07/2023]
Abstract
OBJECTIVE To design a new controlled-release MMC-PLA film and explore whether and how this film could prevent epidural scar hyperplasia and adhesion in a post-laminectomy rat model. MATERIALS AND METHODS All procedures were performed under the approval and supervision of the Institutional Animal Care and Use Committee (IACUC) of Nanjing Medical University. A total of 120 Sprague-Dawley (SD) rats were randomly placed into four groups after laminectomy (each group=30 rats). In Group I, the laminectomy area was flushed with saline as a control; in Group II, 25 mg of PLA film was applied to the dura mater in the laminectomy area; in Group III, a cotton pad soaked with 0.01% MMC solution was kept on the laminectomy area; and in Group IV, 25 mg of PLA film containing 0.01% MMC was implanted on the laminectomy area. Magnetic resonance imaging (MRI), hematoxylin-eosin (HE) staining and Masson staining were used to evaluate scar adhesion and collagen deposition one month after the operation. Autophagy-related proteins, including autophagy-related gene 5 (ATG5), beclin 1, light chain-3B-2/1 (LC3B-2/1) and protein 53 (p53), were detected by Western blotting. A microRNA microarray analysis was performed to screen for scar tissue miRNAs, especially those associated with autophagy, and changes in expression were confirmed by reverse transcription-polymerase chain reaction (RT-PCR). RESULTS A total of 112 rats recovered uneventfully from the surgery. MRI showed that the scar adhesion and scar area of the MMC-PLA group were significantly reduced compared with those of the PLA, MMC, and saline groups. Accordingly, scar adhesion and the deposition of collagen in the rats treated with MMC-PLA were also significantly reduced, as indicated by HE and Masson staining. In the scar tissue, the levels of autophagy-related proteins (ATG5, beclin 1, LC3B-2/1 and p53) were significantly elevated in the MMC-PLA group. Additionally, in the MMC-PLA group, the expression levels of miR-34a, miR-146a and miR-200 were significantly increased, while the levels of miR-16, miR-221 and miR-378a were significantly decreased. CONCLUSIONS The controlled-release MMC-PLA film could alleviate epidural scar hyperplasia after laminectomy; this outcome might be associated with increased autophagy and altered expression of miRNAs in the scar tissue.
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Affiliation(s)
- B-B Wang
- Department of Orthopaedics, Sir Run Run Hospital, Nanjing Medical University, Jiangning District, Nanjing, China.
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106
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Chen C, Chen Y, Lu Z, Qian M, Xie H, Tay FR. The effects of water on degradation of the zirconia-resin bond. J Dent 2017; 64:23-29. [PMID: 28414171 DOI: 10.1016/j.jdent.2017.04.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 04/07/2017] [Accepted: 04/09/2017] [Indexed: 10/19/2022] Open
Abstract
OBJECTIVES 10-methacryloyloxydecyldihydrogenphosphate (MDP) containing primers improve bonding of yttria-stabilised tetragonal zirconia (Y-TZP) to methacrylate resins. The present study investigated the role played by water in the deterioration of MDP-mediated zirconia-resin bonds. METHODS Grit-blasted Y-TZP plates were conditioned with two MDP primers and bonded with resin for shear bond strength (SBS) testing. Additional bonded plates were aged hydrothermally and compared with unaged Y-TZP after 24h of water-storage or 6 months of water/acid/alkali-storage. The monoclinic phase (m-ZrO2) in different groups was determined by X-ray diffraction. Hydrolytic stability of the coordinate bond between MDP and zirconia in neutral/acid/alkaline environment was analysed using thermodynamic calculations. Microleakage and release of the element phosphorus from MDP-mediated Y-TZP/resin-bonded interfaces were evaluated via methylene blue dye infiltration and inductively coupled plasma-mass spectrometry (ICP-MS). RESULTS Hydrothermal ageing did not significantly alter SBS. Ageing in acidic or neutral medium led to significant decline in SBS. The m-ZrO2 phase increased after hydrothermal ageing but no m-ZrO2 was detected in the water/acid/alkali-aged specimens. A higher equilibrium constant was identified in the MDP-t-ZrO2 complex when compared with the MDP-m-ZrO2 complex. MDP-conditioning failed to prevent infiltration of the methylene blue dye. Phosphorus was detected by ICP-MS from the solutions used for soaking the resin-bonded specimens. CONCLUSIONS Hydrolysis of the coordinate bond between MDP and ZrO2, rather than t→m phase transformation, weakens the bond integrity between MDP-conditioned Y-TZP and methacrylate resin. CLINICAL SIGNIFICANCE Hydrolysis of the coordinate bond between MDP and zirconia is responsible for deterioration of the integrity of the bond between MDP-conditioned Y-TZP and methacrylate resin.
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Affiliation(s)
- C Chen
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - Y Chen
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - Z Lu
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - M Qian
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - H Xie
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China.
| | - F R Tay
- Department of Endodontics, The Dental College of Georgia, Augusta University, Augusta, GA, 30912, USA.
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Abstract
Tuberculosis is recognized as a chronic respiratory infectious disease and still one of the important public health issues in the world. Douglas reported an unique seasonal pattern (summer peak) of tuberculosis, when compared with most other respiratory diseases in 1996. Since then, there had been many other researchers notified various patterns of seasonality on TB. This paper reviewed all the studies published in the last five years and analyzed the current findings on seasonal variability and influencing factors, in order to explore the risk factors to provide evidence for prevention and control strategies on tuberculosis.
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Affiliation(s)
- Z B Zhang
- Department of Tuberculosis Prevention, Wuhan Institute for Tuberculosis Control, Wuhan 430030, China
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108
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Ling Q, Xie H, Li J, Liu J, Cao J, Yang F, Wang C, Hu Q, Xu X, Zheng S. Donor Graft MicroRNAs: A Newly Identified Player in the Development of New-onset Diabetes After Liver Transplantation. Am J Transplant 2017; 17:255-264. [PMID: 27458792 PMCID: PMC5215980 DOI: 10.1111/ajt.13984] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2016] [Revised: 07/17/2016] [Accepted: 07/18/2016] [Indexed: 01/25/2023]
Abstract
New-onset diabetes after liver transplantation (NODALT) is a frequent complication with an unfavorable outcome. We previously demonstrated a crucial link between donor graft genetics and the risk of NODALT. We selected 15 matched pairs of NODALT and non-NODALT liver recipients using propensity score matching analysis. The donor liver tissues were tested for the expression of 10 microRNAs (miRNAs) regulating human hepatic glucose homeostasis. The biological functions of potential target genes were predicted using gene ontology and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis. Both miR-103 and miR-181a were significantly highly expressed in the NODALT group as compared to the non-NODALT group. The predicted target genes (e.g. Irs2, Pik3r1, Akt2, and Gsk3b) were involved in glucose import and the insulin signaling pathway. We also observed dysregulation of miRNAs (e.g. let-7, miR-26b, miR-145, and miR-183) in cultured human hepatocytes treated with tacrolimus or high glucose, the two independent risk factors of NODALT identified in this cohort. The hepatic miRNA profiles altered by tacrolimus or hyperglycemia were associated with insulin resistance and glucose homeostatic imbalance as revealed by enrichment analysis. The disease susceptibility miRNA expressive pattern could be imported directly from the donor and consolidated by the transplant factors.
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Affiliation(s)
- Q. Ling
- Department of SurgeryCollaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesFirst Affiliated HospitalCollege of MedicineZhejiang UniversityHangzhouChina,Key Lab of Combined Multi‐Organ TransplantationMinistry of Public HealthHangzhouChina
| | - H. Xie
- Key Lab of Combined Multi‐Organ TransplantationMinistry of Public HealthHangzhouChina
| | - J. Li
- Department of SurgeryCollaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesFirst Affiliated HospitalCollege of MedicineZhejiang UniversityHangzhouChina
| | - J. Liu
- Department of SurgeryCollaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesFirst Affiliated HospitalCollege of MedicineZhejiang UniversityHangzhouChina,Department of Pathology and Molecular MedicineFaculty of Health SciencesMcMaster UniversityHamiltonOntarioCanada
| | - J. Cao
- Key Lab of Combined Multi‐Organ TransplantationMinistry of Public HealthHangzhouChina
| | - F. Yang
- Department of SurgeryCollaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesFirst Affiliated HospitalCollege of MedicineZhejiang UniversityHangzhouChina
| | - C. Wang
- Department of SurgeryCollaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesFirst Affiliated HospitalCollege of MedicineZhejiang UniversityHangzhouChina
| | - Q. Hu
- Key Lab of Combined Multi‐Organ TransplantationMinistry of Public HealthHangzhouChina
| | - X. Xu
- Department of SurgeryCollaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesFirst Affiliated HospitalCollege of MedicineZhejiang UniversityHangzhouChina,Key Lab of Combined Multi‐Organ TransplantationMinistry of Public HealthHangzhouChina
| | - S. Zheng
- Department of SurgeryCollaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesFirst Affiliated HospitalCollege of MedicineZhejiang UniversityHangzhouChina,Key Lab of Combined Multi‐Organ TransplantationMinistry of Public HealthHangzhouChina
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109
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Rosa V, Xie H. Graphene induces spontaneous osteogenic differentiation in vitro and in vivo. Dent Mater 2017. [DOI: 10.1016/j.dental.2017.08.138] [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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110
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Xie H, Cao L. [External therapy of Traditional Chinese Medicine for allergic rhinitis]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2017; 31:13-17. [PMID: 29774677 DOI: 10.13201/j.issn.1001-1781.2017.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Indexed: 06/08/2023]
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111
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Zhang Q, Liu Z, Xie H, Ma K, Wu L. Fabrication of thermal-resistant gratings for high-temperature measurements using geometric phase analysis. Rev Sci Instrum 2016; 87:123104. [PMID: 28040981 DOI: 10.1063/1.4971876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Grating fabrication techniques are crucial to the success of grating-based deformation measurement methods because the quality of the grating will directly affect the measurement results. Deformation measurements at high temperatures entail heating and, perhaps, oxidize the grating. The contrast of the grating lines may change during the heating process. Thus, the thermal-resistant capability of the grating becomes a point of great concern before taking measurements. This study proposes a method that combines a laser-engraving technique with the processes of particle spraying and sintering for fabricating thermal-resistant gratings. The grating fabrication technique is introduced and discussed in detail. A numerical simulation with a geometric phase analysis (GPA) is performed for a homogeneous deformation case. Then, the selection scheme of the grating pitch is suggested. The validity of the proposed technique is verified by fabricating a thermal-resistant grating on a ZrO2 specimen and measuring its thermal strain at high temperatures (up to 1300 °C). Images of the grating before and after deformation are used to obtain the thermal-strain field by GPA and to compare the results with well-established reference data. The experimental results indicate that this proposed technique is feasible and will offer good prospects for further applications.
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Affiliation(s)
- Q Zhang
- AML, School of Aerospace Engineering, Tsinghua University, Beijing 100084, China
| | - Z Liu
- School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China
| | - H Xie
- AML, School of Aerospace Engineering, Tsinghua University, Beijing 100084, China
| | - K Ma
- AML, School of Aerospace Engineering, Tsinghua University, Beijing 100084, China
| | - L Wu
- AML, School of Aerospace Engineering, Tsinghua University, Beijing 100084, China
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Abstract
AIM The aim of the study is to investigate protective effect of resveratrol (Res) on acute kidney injury (AKI) in sepsis. METHODS Rats in sham group received sham operation; in sham + Res received sham operation and Res (3 mg/kg); in cecal ligation and puncture (CLP) established as sepsis; in CLP + Res (3 mg/kg) with sepsis and Res (3 mg/kg); and in CLP + Res (10 mg/kg) with sepsis and Res (10 mg/kg). Survival rate, serum indexes, inflammatory factors, NF-κB-P65, and SIRT1 were detected. Lipopolysaccharide (LPS) mesangial cell was with Res and SIRT1 silencing. RESULTS (1) Res intervention improved survival rate of CLP rat. (2) Compared to sham, serum creatinine, blood urine nitrogen, serum cystatin C, neutrophil gelatinase-associated lipocalin, kidney injury molecule-1, tumor necrosis factor-α, interleukin-1β, IL-6, and renal injury index increased in CLP group, while decreased in CLP + Res (3 mg/kg) and CLP + Res (10 mg/kg), significantly, as dose-dependent ( p < 0.05). (3) With Res, NF-κB-P65 and de-acetylated SIRT1 decreased, while SIRT1 and de-acetylated Nuclear factor kB-p65 9 NF-κB-P65) increased, significantly ( p < 0.05). (4) SIRT1 and de-acetylated NF-κB-P65 decreased in LPS cells, while SIRT1 increased after Res intervention, significantly ( p < 0.05). After silencing SIRT1, de-acetylated NF-κB-P65 increased, significantly ( p < 0.05). CONCLUSIONS Res increases the survival rate of septic rats by inhibiting inflammatory factors to ease AKI and promotes NF-κB-P65 de-acetylation by upregulating SIRT1.
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Affiliation(s)
- Y Gan
- 1 Department of Pediatrics, Zhujiang Hospital of Southern Medical University, Guangzhou, Guangdong, China.,2 Department of Pediatrics, The First Hospital of Huhehaote, The Inner Mongolia Autonomous Region, China
| | - S Tao
- 1 Department of Pediatrics, Zhujiang Hospital of Southern Medical University, Guangzhou, Guangdong, China
| | - D Cao
- 3 Department of Pediatrics, Shenzhen Children's Hospital, Shenzhen, Guangdong, China
| | - H Xie
- 1 Department of Pediatrics, Zhujiang Hospital of Southern Medical University, Guangzhou, Guangdong, China
| | - Q Zeng
- 1 Department of Pediatrics, Zhujiang Hospital of Southern Medical University, Guangzhou, Guangdong, China
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Sleeper MM, Fishman K, MacKay RJ, Brown M, Bauck AG, Xie H. Acupuncture and traditional Chinese veterinary medicine for treatment of a mare with rectal paralysis. EQUINE VET EDUC 2016. [DOI: 10.1111/eve.12692] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M. M. Sleeper
- College of Veterinary Medicine; University of Pennsylvania; Philadelphia USA
| | - K. Fishman
- College of Veterinary Medicine; University of Florida; Gainesville USA
| | - R. J. MacKay
- College of Veterinary Medicine; University of Florida; Gainesville USA
| | - M. Brown
- College of Veterinary Medicine; University of Florida; Gainesville USA
| | - A. G. Bauck
- College of Veterinary Medicine; University of Florida; Gainesville USA
| | - H. Xie
- College of Veterinary Medicine; University of Florida; Gainesville USA
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Soria JC, Italiano A, Cervantes A, Tabernero J, Infante J, Lara P, Spira A, Calvo E, Moreno V, Blay JY, Lauer R, Chan N, Zhong B, Santiago-Walker AA, Bussolari J, Luo F, Xie H, Hammerman P. Safety and activity of the pan–fibroblast growth factor receptor (FGFR) inhibitor erdafitinib in phase 1 study patients with advanced urothelial carcinoma. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw373.09] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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115
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Martino J, Holmes A, Wise S, Xie H, Wise J. The role of centrosomes in chemical carcinogenesis: Hexavalent chromium induces aberrant centriole and centrosome separation and centrosome amplification. Toxicol Lett 2016. [DOI: 10.1016/j.toxlet.2016.07.655] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Tabernero J, Infante J, Mita A, Keung C, Skee D, Xie H, Parekh T, De Porre P, Luo F, Soria JC. Pharmacokinetics (PK) of the pan-FGFR inhibitor erdafitinib in urothelial carcinoma. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw373.17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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117
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Hua W, Fan LM, Dai R, Luan M, Xie H, Li AQ, Li L. Comparison of two series of non-invasive instruments used for the skin physiological properties measurements: the DermaLab ® from Cortex Technology vs. the series of detectors from Courage & Khazaka. Skin Res Technol 2016; 23:70-78. [PMID: 27637867 DOI: 10.1111/srt.12303] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/21/2016] [Indexed: 02/05/2023]
Abstract
BACKGROUND/PURPOSE The detectors from Courage & Khazaka and DermaLab® from Cortex Technology were two series of the most commonly used non-invasive instruments for the skin physiological properties measurements. The aim of this study is to reveal the differences and correlations in measuring skin color, hydration, transepidermal water loss (TEWL), sebum and elasticity on the forearm or faces between two commercially available series of instruments. METHODS 30 subjects were enrolled to be measured by the two series of instruments. The measurements by each series were performed on the left/right side of the body randomly. The hydration, sebum, elasticity and TEWL measurements were performed on different sites. RESULTS Positive correlations were found in the values of skin color, hydration, TEWL, sebum and visco-elasticity detected by the two series. The values related to skin firmness measured by the two instruments were statistically negative correlated. Contrary to the results in measuring the skin color, the detectors from Courage & Khazaka presented lower values of variation in measuring skin hydration and TEWL than those from DermaLab® . CONCLUSION The two series have significant correlations.The differences of the two series can be due either to differences in the design of the probe or left/right part of the body.
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Affiliation(s)
- W Hua
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
| | - L-M Fan
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
| | - R Dai
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
| | - M Luan
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
| | - H Xie
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
| | - A-Q Li
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
| | - L Li
- Department of Dermatovenereology, West China Hospital, Sichuan University, Chengdu, China
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118
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Xin T, Brutus JC, Belomestnykh SA, Ben-Zvi I, Boulware CH, Grimm TL, Hayes T, Litvinenko VN, Mernick K, Narayan G, Orfin P, Pinayev I, Rao T, Severino F, Skaritka J, Smith K, Than R, Tuozzolo J, Wang E, Xiao B, Xie H, Zaltsman A. Design of a high-bunch-charge 112-MHz superconducting RF photoemission electron source. Rev Sci Instrum 2016; 87:093303. [PMID: 27782552 DOI: 10.1063/1.4962682] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
High-bunch-charge photoemission electron-sources operating in a continuous wave (CW) mode are required for many advanced applications of particle accelerators, such as electron coolers for hadron beams, electron-ion colliders, and free-electron lasers. Superconducting RF (SRF) has several advantages over other electron-gun technologies in CW mode as it offers higher acceleration rate and potentially can generate higher bunch charges and average beam currents. A 112 MHz SRF electron photoinjector (gun) was developed at Brookhaven National Laboratory to produce high-brightness and high-bunch-charge bunches for the coherent electron cooling proof-of-principle experiment. The gun utilizes a quarter-wave resonator geometry for assuring beam dynamics and uses high quantum efficiency multi-alkali photocathodes for generating electrons.
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Affiliation(s)
- T Xin
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - J C Brutus
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | | | - I Ben-Zvi
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | | | - T L Grimm
- Niowave, Inc., Lansing, Michigan 48906, USA
| | - T Hayes
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | | | - K Mernick
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - G Narayan
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - P Orfin
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - I Pinayev
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - T Rao
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - F Severino
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - J Skaritka
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - K Smith
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - R Than
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - J Tuozzolo
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - E Wang
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - B Xiao
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
| | - H Xie
- Peking University, Beijing, China
| | - A Zaltsman
- Brookhaven National Laboratory, Upton, New York 11973-5000, USA
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Xie H, Pal R, Mitra S. A descriptive model of resting-state networks using Markov chains. Annu Int Conf IEEE Eng Med Biol Soc 2016; 2016:3594-3597. [PMID: 28269073 DOI: 10.1109/embc.2016.7591505] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Resting-state functional connectivity (RSFC) studies considering pairwise linear correlations have attracted great interests while the underlying functional network structure still remains poorly understood. To further our understanding of RSFC, this paper presents an analysis of the resting-state networks (RSNs) based on the steady-state distributions and provides a novel angle to investigate the RSFC of multiple functional nodes. This paper evaluates the consistency of two networks based on the Hellinger distance between the steady-state distributions of the inferred Markov chain models. The results show that generated steady-state distributions of default mode network have higher consistency across subjects than random nodes from various RSNs.
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120
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Priyadarshini B, Selvan S, Lu T, Xie H, Neo J, Fawzy A. Chlorhexidine Nanocapsule Drug Delivery Approach to the Resin-Dentin Interface. J Dent Res 2016; 95:1065-72. [DOI: 10.1177/0022034516656135] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
In this study, we are introducing a new drug-delivery approach to demineralized dentin substrates through microsized dentinal tubules in the form of drug-loaded nanocapsules. Chlorhexidine (CHX) is widely used in adhesive dentistry due to its nonspecific matrix metalloproteinase inhibitory effect and antibacterial activities. Poly(ε-caprolactone) nanocapsules (nano-PCL) loaded with CHX were fabricated by interfacial polymer deposition at PCL/CHX ratios of 125:10, 125:25, and 125:50. Unloaded nanocapsules (blank) were fabricated as control. The fabricated nanocapsules were characterized in vitro in terms of particle size, surface charges, particle recovery, encapsulation efficiency, and drug loading. Nanocapsule morphology, drug inclusion, structural properties, and crystallinity were investigated by scanning and transmission electron microscopes (SEM/TEM), energy-dispersive x-ray analysis, Fourier transform infrared spectroscopy, and x-ray diffraction. Initial screening of the antibacterial activities and the cytotoxicity of the nanocapsules were also conducted. Nanocapsules, as carried on ethanol/water solution, were delivered to demineralized dentin specimens connected to an ex vivo model setup simulating the pulpal pressure to study their infiltration, penetration depth, and retention inside the dentinal tubules by SEM/TEM. Nanocapsules were Ag labeled and delivered to demineralized dentin, followed by the application of a 2-step etch-and-rinse dentin adhesive. CHX-release profiles were characterized in vitro and ex vivo up to 25 d. Spherical nanocapsules were fabricated with a CHX core coated with a thin PCL shell. The blank nanocapsules exhibited the largest z-average diameter with negatively charged ζ-potential. With CHX incorporation, the nanocapsule size was decreased with a positive shift in ζ-potential. Nano-PCL/CHX at 125:50 showed the highest drug loading, antibacterial effect, and CHX release both in vitro and ex vivo. SEM and TEM revealed the deep penetration and retention of the CHX-loaded nanocapsules inside dentinal tubules and their ability to be gradually degraded to release CHX in vitro and ex vivo. Ag-labeled nanocapsules revealed the close association and even distribution of nanocapsules throughout the resin tag structure. This study demonstrated the potential of introducing this novel drug-delivery approach to demineralized dentin substrates and the resin-dentin interface with nanosized CHX-loaded nanocapsules through the microsized dentinal tubules.
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Affiliation(s)
- B.M. Priyadarshini
- Discipline of Oral Sciences, Faculty of Dentistry, National University of Singapore, Singapore
| | - S.T. Selvan
- Institute of Materials Research and Engineering, Innovis, Singapore
| | - T.B. Lu
- Electron Microscopy Unit, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - H. Xie
- Discipline of Oral Sciences, Faculty of Dentistry, National University of Singapore, Singapore
| | - J. Neo
- Discipline of Prosthodontics, Operative Dentistry and Endodontics, Faculty of Dentistry, National University of Singapore, Singapore
| | - A.S. Fawzy
- Discipline of Oral Sciences, Faculty of Dentistry, National University of Singapore, Singapore
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121
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Xie H, Xie Y, Peng R, Li L, Zhu Y, Guo J. Harlequin ichthyosis: a novel compound mutation of ABCA12 with prenatal diagnosis. Clin Exp Dermatol 2016; 41:636-9. [PMID: 27381714 DOI: 10.1111/ced.12861] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/19/2015] [Indexed: 11/26/2022]
Abstract
Harlequin ichthyosis (HI) is the most severe form of recessive congenital ichthyosis, and is frequently lethal. We describe a family with prenatal diagnosis of HI in two siblings. We applied genomic capture and massively parallel sequencing to detect all mutations in 20 genes, including ABCA12, with inherited mutations that predispose to congenital ichthyosis. Sequence analysis of the ABCA12 gene identified two mutations, c.5232 G>A (p.Trp1744*) in exon 34 and c.6443 C>A (p.Pro2148Gln) in exon 44, each in a heterozygous state. Sanger sequencing confirmed that each parent was a heterozygous carrier for one of the variants. The spectrum of mutations identified in this study and previous studies reveals a novel compound mutation of ABCA12.
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Affiliation(s)
- H Xie
- Department of Ultrasonic Medicine, Fetal Medical Center, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
| | - Y Xie
- Department of Prenatal Diagnosis, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
| | - R Peng
- Department of Ultrasonic Medicine, Fetal Medical Center, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
| | - L Li
- Department of Ultrasonic Medicine, Fetal Medical Center, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
| | - Y Zhu
- Department of Ultrasonic Medicine, Fetal Medical Center, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
| | - J Guo
- Cancer Science Institute of Singapore, National University of Singapore, Singapore, Singapore
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Abstract
Primary cilia are cellular antennae that receive and transduce extracellular cues. These microtubule-rich structures are comprised of at least three distinct ciliary compartments: basal bodies, transition zone, and axoneme. Septins have been implicated in cilia function at the transition zone, but accumulating evidence suggests that they localize predominantly within the axoneme. Here, we describe three fixation conditions that preserve the substructure of primary cilia and demonstrate known ciliary proteins that localize to these distinct ciliary substructures. Finally, we show immunostaining and live microscopy methods to detect septins within the axoneme.
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Affiliation(s)
- M S Kim
- University of Toronto, Toronto, ON, Canada
| | - C D Froese
- University of Toronto, Toronto, ON, Canada
| | - H Xie
- University of Toronto, Toronto, ON, Canada
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123
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Shen H, Wei BB, Xie H, Peng ZX, Wang J, Bai J. [Surgical management of primary hyperthyroidism and coexistent thyroid carcinoma]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2016; 51:273-6. [PMID: 27095719 DOI: 10.3760/cma.j.issn.1673-0860.2016.04.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To evaluated the results of surgical treatment for primary hyperparathyroidism coexistent with thyroid cancer. METHODS From March 2007 to May 2014, 27 patients suffered thyroid carcinoma coexistent with primary hyperparathyroidism with pathological and laboratory confirmation were studied retrospectively. In 8 of 27 cases thyroidectomy and parathyroidectomy were performed separately, with interval time of 3 to 26 months, and in the remaining cases both procedures were done simultaneously. During surgery quick PTH evaluation and calcium measure were routinely performed. RESULTS Postoperative temporary hypoparathyroidism was found in 26 of 27 cases, and postoperative permanent hypoparathyroidism developed in 4 cases that underwent separate operation. Limited movement of vocal cord was showed in 4 cases after parathyroidectomy, but it lasted no more than 2 months. No permanent paralysis of recurrent laryngeal nerve was found. No thyroid cancer or hyperparathyroidism was found with follows-up of 11 to 43 months. CONCLUSIONS Thyroidectomy and parathyroidectomy performed separately have higher risk to develop hypoparathyroidism than they are done simultaneously. PTH and calcium should be evaluated in patients with thyroid carcinoma whenever available.
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Affiliation(s)
- H Shen
- Department of Otorhinolaryngology Head and Neck Surgery, Shijitan Hospital, Capital Medicial University, College of Otorhinolaryngology, Captial Medical University, Key Laboratory of Otorhinolaryngology Head and Neck Surgery (Capital Medicial University), Ministry of Education, Beijing 100038, China
| | - B B Wei
- Department of Otorhinolaryngology Head and Neck Surgery, Shijitan Hospital, Capital Medicial University, College of Otorhinolaryngology, Captial Medical University, Key Laboratory of Otorhinolaryngology Head and Neck Surgery (Capital Medicial University), Ministry of Education, Beijing 100038, China
| | - H Xie
- Department of Otorhinolaryngology Head and Neck Surgery, Shijitan Hospital, Capital Medicial University, College of Otorhinolaryngology, Captial Medical University, Key Laboratory of Otorhinolaryngology Head and Neck Surgery (Capital Medicial University), Ministry of Education, Beijing 100038, China
| | - Z X Peng
- Department of Otorhinolaryngology Head and Neck Surgery, Shijitan Hospital, Capital Medicial University, College of Otorhinolaryngology, Captial Medical University, Key Laboratory of Otorhinolaryngology Head and Neck Surgery (Capital Medicial University), Ministry of Education, Beijing 100038, China
| | - J Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Shijitan Hospital, Capital Medicial University, College of Otorhinolaryngology, Captial Medical University, Key Laboratory of Otorhinolaryngology Head and Neck Surgery (Capital Medicial University), Ministry of Education, Beijing 100038, China
| | - J Bai
- Department of Otorhinolaryngology Head and Neck Surgery, Shijitan Hospital, Capital Medicial University, College of Otorhinolaryngology, Captial Medical University, Key Laboratory of Otorhinolaryngology Head and Neck Surgery (Capital Medicial University), Ministry of Education, Beijing 100038, China
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124
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Zhang J, Xie H, Fang M, Wang K, Chen J, Sun W, Yang L, Lin H. Keto-supplemented Low Protein Diet: A Valid Therapeutic Approach for Patients with Steroid-resistant Proteinuria during Early-stage Chronic Kidney Disease. J Nutr Health Aging 2016; 20:420-7. [PMID: 26999243 DOI: 10.1007/s12603-015-0612-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND OBJECTIVES Low protein diets supplemented with keto acid (sLPD) are recommended for patients with stage 3-5 chronic kidney disease (CKD). This study assessed whether sLPD is beneficial for patients with steroid-resistant proteinuria during early-stage CKD. DESIGN, SETTING, PARTICIPANTS, AND MEASUREMENTS A 1-year randomized controlled trial was conducted from 2010 to 2012. In this study, 108 proteinuric patients who were steroid-resistant were assigned to a sLPD group (0.6 g/kg/d with 0.09 g/kg/d keto acids) or a normal protein diet group (NPD, 1.0 g/kg/d). Estimated dietary protein intake, urinary protein excretion, remission rate, renal function, nutritional status, and blood pressure were measured. RESULTS Baseline characteristics were comparable between the sLPD group (47 patients) and the NPD group (49 patients). Urinary protein excretion significantly decreased in sLPD compared to NPD in months 6, 9, and 12 (P<0.05). Proteinuria reduction was higher in sLPD than in NPD (P<0.001) at the end of the study. Complete remission and partial remission rates were higher in sLPD than in NPD. Serum albumin and pre-albumin levels were higher in sLPD than in NPD in months 9 and 12 (P<0.05). Serum total cholesterol and triglyceride levels declined more significantly in sLPD than in NPD (P<0.01) at the end of the study. There were no differences in nutritional status, renal function, hemoglobin, or blood pressure between the two groups. CONCLUSIONS sLPD is both nutritionally safe and beneficial, providing nephroprotective effects for early-stage CKD patients with steroid-resistant proteinuria.
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Affiliation(s)
- J Zhang
- Hongli Lin, MD, Nephrology Department, the First Affiliated Hospital of Dalian Medical University, 222 ZhongShan Road, Dalian 116011 China. Telephone: 0086-13332268576
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125
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Hu Y, Dong WX, Sun XY, Yuan ZS, Zhang J, Xie H, Wu CH. [A biomechanical evaluation of odontoid screw plate fixation system]. Zhonghua Wai Ke Za Zhi 2016; 54:212-6. [PMID: 26932891 DOI: 10.3760/cma.j.issn.0529-5815.2016.03.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To evaluate the biomechanical stability of anterior odontoid screw plate (AOSP). METHODS Eight fresh-frozen cadaveric cervical spine specimens were subjected to stepwise destabilization of the C1-C3 complex, simulating a type Ⅰ Hangman fracture, type Ⅱ odontoid fracture, and the C2-3 disc injury. Intact specimens, fractured specimens, and fractured specimens with posterior, anterior fixation techniques were divided into six groups: control group (intact), injury group of type Ⅱ odontoid fracture and type Ⅰ Hangman fracture combined with C2-3 disk injury, after anterior cervical plate+ odontoid screw+ cage (ACP+ OS+ cage) group, after anterior odontoid screw plate (AOSP) fixation system group, after affixing rods from pedicle screws in C2 to lateral mass screws in C3+ odontoid screw (C2PS+ C3LMS+ OS) group, after affixing rods from pedicle screws in C1 to pedicle screws in C2 and lateral mass screws in C3 (C1PS+ C2PS+ C3LMS) group. The range of motion (ROM) and neutral zone of C1-C2 and C2-C3 segment was tested. RESULTS There was statistically significant difference between the C1PS+ C2PS+ C3LMS fixation group and the AOSP fixation group of ROMC1-C2(P<0.05). During all loading modes, AOSP+ Bone graft fixation significantly outperformed the ACP+ OS+ cage fixation in limiting ROMC2-C3. During flexion and extension, AOSP fixation significantly outperformed the C1PS+ C2PS+ C3LMS fixation and C2PS+ C3LMS+ OS fixation in limiting ROMC2-C3. CONCLUSION The AOSP fixation system has excellent biomechanical performance when dealing with type Ⅰ Hangman fracture, type Ⅱ odontoid fracture, and the C2-3 disc injury, and appear to be a safe and effective technique for dealing with the combined injury.
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Affiliation(s)
- Y Hu
- Department of Spinal Surgery, Ningbo No.6 Hospital, Ningbo 315040, China
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126
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Shen Z, Du C, Zang R, Xie H, Lv W, Li H, Xia Y, Tang W. Microarray expression profiling of dysregulated long non-coding RNAs in Hirschsprung's disease reveals their potential role in molecular diagnosis. Neurogastroenterol Motil 2016; 28:266-73. [PMID: 26574899 DOI: 10.1111/nmo.12722] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 10/07/2015] [Indexed: 02/08/2023]
Abstract
BACKGROUND Hirschsprung's disease (HSCR) is one of the common digestive disorders in the new born. Long non-coding RNAs (lncRNAs) play an important role in various biological processes. However, knowledge on lncRNAs in HSCR is limited. METHODS The expression profile of lncRNAs in HSCR was obtained using microarray. A total of 2078 differentially expressed lncRNAs were detected by microarray in HSCR tissues compared with matched normal colon tissues (fold change ≥2, p < 0.05). Candidate biomarkers were selected from these differentially expressed lncRNAs based on artificial criterion (raw signal intensity ≥50; fold change ≥8) and then validated in 80 pairs of HSCR and normal tissues using quantitative real-time polymerase chain reaction (qRT-PCR). Moreover, the computational analysis was used to evaluate the lncRNA-microRNA and lncRNA-protein relationships. KEY RESULTS A panel of 5-lncRNAs was identified to distinguish HSCR from normal tissues with remarkable sensitivity and specificity. The area under the receiver operating characteristic curve (AUC) for HSCR identification in the validation set was 0.875. The bioinformatics analysis reveals that these dysregulated lncRNAs are mainly involved in RNA-protein relationships, including RNA splicing, binding, transport, processing, and localization. CONCLUSIONS & INFERENCES Our results are the first to report the expression profile of dysregulated lncRNAs in HSCR and infer that lncRNAs may serve as novel diagnostic biomarkers for HSCR.
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Affiliation(s)
- Z Shen
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, China.,Department of Pediatric Surgery, Nanjing Children's Hospital Affiliated Nanjing Medical University, Nanjing, China
| | - C Du
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, China.,Department of Pediatric Surgery, Nanjing Children's Hospital Affiliated Nanjing Medical University, Nanjing, China
| | - R Zang
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, China.,Department of Pediatric Surgery, Nanjing Children's Hospital Affiliated Nanjing Medical University, Nanjing, China
| | - H Xie
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, China.,Department of Pediatric Surgery, Nanjing Children's Hospital Affiliated Nanjing Medical University, Nanjing, China
| | - W Lv
- Department of Accounting, School of Business, Nanjing University, Nanjing, China
| | - H Li
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, China.,Department of Pediatric Surgery, Nanjing Children's Hospital Affiliated Nanjing Medical University, Nanjing, China
| | - Y Xia
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, China.,Key Laboratory of Modern Toxicology (Nanjing Medical University), Ministry of Education, Nanjing, China
| | - W Tang
- State Key Laboratory of Reproductive Medicine, Institute of Toxicology, School of Public Health, Nanjing Medical University, Nanjing, China.,Department of Pediatric Surgery, Nanjing Children's Hospital Affiliated Nanjing Medical University, Nanjing, China
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Dimitrievska M, Xie H, Jackson AJ, Fontané X, Espíndola-Rodríguez M, Saucedo E, Pérez-Rodríguez A, Walsh A, Izquierdo-Roca V. Resonant Raman scattering of ZnSxSe1−x solid solutions: the role of S and Se electronic states. Phys Chem Chem Phys 2016; 18:7632-40. [DOI: 10.1039/c5cp04498g] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A combined theoretical and experimental study of the enhancement in the Raman mode intensities of ZnSSe compounds, under various resonant conditions, is presented, leading to more detailed insights into the role of chalcogen electronic states in the photon–matter interaction.
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Affiliation(s)
- M. Dimitrievska
- Catalonia Institute for Energy Research (IREC)
- 08930 Sant Adrià de Besòs
- Spain
| | - H. Xie
- Catalonia Institute for Energy Research (IREC)
- 08930 Sant Adrià de Besòs
- Spain
| | - A. J. Jackson
- Centre for Sustainable Chemical Technologies and Department of Chemistry
- University of Bath
- Bath BA2 7AY
- UK
| | - X. Fontané
- Catalonia Institute for Energy Research (IREC)
- 08930 Sant Adrià de Besòs
- Spain
| | | | - E. Saucedo
- Catalonia Institute for Energy Research (IREC)
- 08930 Sant Adrià de Besòs
- Spain
| | - A. Pérez-Rodríguez
- Catalonia Institute for Energy Research (IREC)
- 08930 Sant Adrià de Besòs
- Spain
- IN2UB
- University of Barcelona
| | - A. Walsh
- Centre for Sustainable Chemical Technologies and Department of Chemistry
- University of Bath
- Bath BA2 7AY
- UK
| | - V. Izquierdo-Roca
- Catalonia Institute for Energy Research (IREC)
- 08930 Sant Adrià de Besòs
- Spain
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Xie H, Xiong NN, Wang YH, Zhao YZ, Li JZ. Sintering Behavior and Effect of Silver Nanowires on the Electrical Conductivity of Electrically Conductive Adhesives. J Nanosci Nanotechnol 2016; 16:1125-1137. [PMID: 27398575 DOI: 10.1166/jnn.2016.10687] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In this paper, two kinds of silver nanowires with a 160 nm average diameter ranging from 30 to 90 µm length and a 450 nm average diameter up to 100 µm length were successfully synthesized by a polyol process with FeCl3 and Na₂S as reaction inhibitor, respectively. The experimental results indicate that the morphologies and sintering behaviors of both of silver nanowires are impacted by glutaric acid and sintering temperature. The isotropically conductive adhesives (ICAs) filled with micro-sized silver flakes and silver nanowires as hybrid fillers were fabricated and the electrical properties were investigated based on the fraction of the silver nanowires of the total of silver fillers and the curing temperature, etc. The in situ monitoring the variation in electrical resistance of the ICAs explores that silver nanowires have influence on the curing behavior of the ICAs. Silver nanowires synthesized with Na2S as reaction inhibitor and treated with glutaric acid can significantly improve the electrical conductivity of the ICAs in the case of the low loading of silver fillers in the appropriate proportion range of the weight ratio of micro-sized silver flakes and silver nanowires, primarily as a result of connecting effect. When the loading of silver fillers in the ICAs is high, the electrical conductivity is also enhanced slightly in the case of the proper fraction of silver nanowires of the total of silver fillers. The effect of the curing temperature on the electrical conductivity relates to the fraction of silver nanowires and the total loading of silver fillers. The electrical conductivity of the ICAs filled with micro-sized silver flakes and silver nanowires synthesized with FeCl₃ as reaction inhibitor is greatly damaged, indicating that the size of silver nanowires also is one of main factor to impact the electrical conductivity of the ICAs doped with silver nanowires. The electrical property of the ICAs filled with micro-sized silver flakes and silver nanowires results mainly from the synergy of silver flakes and nanowires, forming the conductive pathways.
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129
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Yang XH, Xie H, Fu HT, An XZ, Jiang XC, Yu AB. Synthesis of hierarchical nanosheet-assembled V2O5 microflowers with high sensing properties towards amines. RSC Adv 2016. [DOI: 10.1039/c6ra18848f] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Hierarchical three-dimensional nanosheet-assembled vanadium pentoxide (V2O5) microflowers are successfully synthesized by a hydrothermal method, followed by a high-temperature sintering treatment.
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Affiliation(s)
- X. H. Yang
- School of Metallurgy
- Northeastern University
- Shenyang 110819
- China
| | - H. Xie
- School of Metallurgy
- Northeastern University
- Shenyang 110819
- China
| | - H. T. Fu
- School of Metallurgy
- Northeastern University
- Shenyang 110819
- China
| | - X. Z. An
- School of Metallurgy
- Northeastern University
- Shenyang 110819
- China
| | - X. C. Jiang
- Department of Chemical Engineering
- Monash University
- Clayton
- Australia
| | - A. B. Yu
- Department of Chemical Engineering
- Monash University
- Clayton
- Australia
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130
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Xie H, Doherty L, O'Boyle C. The Positive Impact of Bariatric Surgery on Sleep. Ir Med J 2016; 109:328-330. [PMID: 26904786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Between June 2009 and July 2012, Apnoea-Hypopnoea Index (AHI) and Functional Outcomes of Sleep Questionnaires Scores (FOSQ) were prospectively evaluated pre- and post-operatively in patients undergoing bariatric surgery. A total of 167 subjects were studied, 75.4% were females. The median age was 46 (14-75) years and BMI 49 (36-69) kg/m2. Ninety two (55.0%) patients were diagnosed with Obstructive Sleep Apnoea (OSA) preoperatively. Fifty (54.0%) required positive airway pressure (PAP) therapy. The mean reduction in BMI post bariatric surgery was 12.2 ± 4.52 kg/m2 at 6.56 ± 2.70 months. Eighty (87.9%) reported improved sleep quality reflected in improved scores in all domains of the FOSQ (p < 0.001, paired t-test). Improvement in FOSQ scores remained significant (p < 0.05) in those with and without OSA. Thirty-nine (90.7%) patients discontinued PAP due to resolution of daytime sleepiness. In conclusion, weight loss following bariatric surgery has a positive impact on sleep in-patients with and without OSAS.
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131
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Zhou J, Fang L, Xie H, Yao WX, Zhou X, Xiong ZJ. A pilot study using the Chinese herbal paste Liu-He-Dan to manage radiodermatitis associated with breast cancer radiotherapy. ACTA ACUST UNITED AC 2015; 22:e453-6. [PMID: 26715882 DOI: 10.3747/co.22.2725] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND During radiotherapy for breast cancer, patients are greatly affected by pain, infection, and delayed healing of wounds caused by radiodermatitis. In the present study, we aimed to determine the efficacy of Liu-He-Dan in treating radiodermatitis. METHODS In 26 breast cancer patients who experienced moist decrustation while receiving radiotherapy, 5 g Liu-He-Dan was applied externally once daily after the wound surface had been cleaned and dried. The healing time was recorded, and a Kaplan-Meier survival curve was applied to analyze the treatment course. Meanwhile, a pain assessment using the Numeric Rating Scale (nrs) recorded the pain level experienced by patients after application of the Liu-He-Dan. RESULTS After application of Liu-He-Dan, the average healing time for the surface of the moist decrustation wounds was 14.17 ± 2.03 days (range: 5-22 days). Inflammatory seepage decreased significantly and exudation almost disappeared in 3 days. The pain trend line indicated that the average nrs score declined with treatment in all patients. The average nrs scores at days 1, 4, and 7 were 6.13, 3.62, and 2.58 respectively. After 3 days of treatment, pain was remarkably alleviated in 80.76% of patients. After treatment for 1 week, the pain remission rate was 96.15%, without any obvious adverse reactions. CONCLUSIONS Liu-He-Dan was efficacious in treating radiation skin injury with little toxicity and few side effects; the economic efficiency of the treatment was also favourable. The Liu-He-Dan was generally well tolerated by patients. In future, randomized control trials will be established for further observation of the value of Liu-He-Dan in treating radiodermatitis in breast cancer.
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Affiliation(s)
- J Zhou
- Department of Chemotherapy, Sichuan Cancer Hospital, Chengdu, Sichuan, P.R.C
| | - L Fang
- Department of Gastroenterology, The First Affiliated Hospital, Chengdu Medical College, Chengdu, Sichuan, P.R.C
| | - H Xie
- Department of Chemotherapy, Sichuan Cancer Hospital, Chengdu, Sichuan, P.R.C
| | - W X Yao
- Department of Chemotherapy, Sichuan Cancer Hospital, Chengdu, Sichuan, P.R.C
| | - X Zhou
- Department of Chemotherapy, Sichuan Cancer Hospital, Chengdu, Sichuan, P.R.C
| | - Z J Xiong
- Department of Chemotherapy, Sichuan Cancer Hospital, Chengdu, Sichuan, P.R.C
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132
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Hu J, Du LX, Sun GS, Xie H, Misra RDK. Low temperature superplasticity and thermal stability of a nanostructured low-carbon microalloyed steel. Sci Rep 2015; 5:18656. [PMID: 26687012 PMCID: PMC4685449 DOI: 10.1038/srep18656] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [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: 06/16/2015] [Accepted: 11/18/2015] [Indexed: 11/29/2022] Open
Abstract
We describe here for the first time the low temperature superplasticity of nanostructured low carbon steel (microalloyed with V, N, Mn, Al, Si, and Ni). Low carbon nanograined/ultrafine-grained (NG/UFG) bulk steel was processed using a combination of cold-rolling and annealing of martensite. The complex microstructure of NG/UFG ferrite and 50–80 nm cementite exhibited high thermal stability at 500 °C with low temperature elongation exceeding 100% (at less than 0.5 of the absolute melting point) as compared to the conventional fine-grained (FG) counterpart. The low temperature superplasticity is adequate to form complex components. Moreover, the low strength during hot processing is favorable for decreasing the spring back and minimize die loss.
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Affiliation(s)
- J Hu
- The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China
| | - L-X Du
- The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China
| | - G-S Sun
- The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China
| | - H Xie
- The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China
| | - R D K Misra
- Laboratory for Excellence in Advanced Steel Research, Metallurgical and Materials Engineering Program, Department of Metallurgical, Materials and Biomedical Engineering University of Texas at El Paso, TX 79968-0521, USA
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Wang S, Xie H, Liu J, Yu S, Chen Y, Zheng M, Deng Y, Wang S, Jiang J, Li Y. 110P Treatment patterns & safety of docetaxel in Chinese real-world clinical practice: a multicenter non-interventional observational study of docetaxel administration as adjuvant therapy in operable early breast cancer patients. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv519.59] [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: 11/14/2022] Open
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134
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Yin LL, Li H, Song B, Chen XY, Xie H, Chen JY, Jiang J, Li YC, Lai L. Intraductal Growing Cholangiocarcinoma: MR Findings and Histopathological Correlation. j med imaging hlth inform 2015. [DOI: 10.1166/jmihi.2015.1646] [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: 11/23/2022]
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135
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Chen BL, Wang W, Xie H, Ge RR, Zhang ZY, Li ZW, Zhou XY, Zhou BX. Phase transformation of Cu-rich precipitates from 9R to 3R variant via ledges mechanism in ferritic steel containing copper. J Microsc 2015; 262:123-7. [PMID: 26599818 DOI: 10.1111/jmi.12352] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Accepted: 10/28/2015] [Indexed: 11/29/2022]
Abstract
Precipitates and solute enrich in aged ferritic steel containing copper were examined using high-resolution electron microscopy, high-angle annular dark-field scanning transmission electron microscopy and energy-dispersive X-ray spectroscopy. Two ledges with one-atom and two-atom layers height in the 9R/3R interface were observed. The enrichment of copper into two successive closed-packed planes with an interval of Fe-rich close-packed plane was detected. The passage of the Shockley partial, or the shearing, changes the stacking sequence of closed-packed planes. Finally, 9R Cu variant transformed into 3R Cu variant.
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Affiliation(s)
- B L Chen
- School of Materials Engineering, Shanghai University of Engineering Science, Shanghai, People's Republic of China
| | - W Wang
- School of Materials Engineering, Shanghai University of Engineering Science, Shanghai, People's Republic of China
| | - H Xie
- School of Materials Engineering, Shanghai University of Engineering Science, Shanghai, People's Republic of China
| | - R R Ge
- School of Materials Engineering, Shanghai University of Engineering Science, Shanghai, People's Republic of China
| | - Z Y Zhang
- School of Materials Engineering, Shanghai University of Engineering Science, Shanghai, People's Republic of China
| | - Z W Li
- School of Materials Engineering, Shanghai University of Engineering Science, Shanghai, People's Republic of China
| | - X Y Zhou
- School of Materials Engineering, Shanghai University of Engineering Science, Shanghai, People's Republic of China
| | - B X Zhou
- Institute of Materials, Shanghai University, Shanghai, People's Republic of China
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136
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Yang L, Xu Q, Xie H, Gu G, Jiang J. Expression of serum miR-218 in hepatocellular carcinoma and its prognostic significance. Clin Transl Oncol 2015; 18:841-7. [PMID: 26586116 DOI: 10.1007/s12094-015-1447-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2015] [Accepted: 11/03/2015] [Indexed: 02/06/2023]
Abstract
BACKGROUND Several recent studies have revealed that microRNAs (miRNAs) are stably detectable in the circulation and can be used as biomarkers for diagnosis and prognosis of malignancy. The aim of this manuscript is to investigate serum miR-218 expression in patients with hepatocellular carcinoma (HCC) and to analyze its potential diagnostic and prognostic value in HCC. METHODS Quantitative real-time quantitative PCR (qPCR) was conducted to detect serum miR-218 expression from 156 HCC and 98 benign liver diseases (BLD) as well as 64 healthy controls. The relevance of serum miR-218 expression to the clinicopathological factors was assessed. In addition, the prediction of cutoff values of the markers was performed by the receiver operating characteristic (ROC) curve. Moreover, the Kaplan-Meier method was used to plot survival curves and univariable and multivariable Cox regression analyses were used to evaluate independent prognostic factors. RESULTS Consequently, our findings revealed that serum miR-218 levels were remarkably underexpressed in HCC patients as compared to BLD patients and healthy controls. And its low level was obviously related to tumor size (p = 0.048), tumor number (p = 0.018), vascular invasion (p = 0.039), Edmondson grade (p = 0.042), and higher TNM stage (III-IV). ROC curve analysis showed that miR-218 had a significant diagnostic accuracy, yielded an AUC (the areas under the ROC curve) of 0.734 (95 % confidence interval (CI) 0.68-0.789, p < 0.01), thus providing a sensitivity of 66.7 % and a specificity of 69.1 % in discriminating HCC from BLD and healthy controls. Meanwhile, miR-218 can act as a useful biomarker in distinguishing the patients with large tumors (>5 cm) from patients with small tumors (<5 cm) (p < 0.01). In addition, the combination of miR-218 and AFP had greater diagnosis capacity with an AUC of 0.908 (95 % CI 0.876-0.940; p < 0.01). Both log-rank test and Cox regression analysis demonstrated that the decreased serum expression of miR-218 had a significant impact on overall survival of the patients with HCC (HR = 3.049, 95 % CI 2.028-4.585, p < 0.01). CONCLUSION Taken together, this study suggested that serum expression of miR-218 might be a potential noninvasive tumor biomarker in the diagnosis and assessment of prognosis of HCC.
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Affiliation(s)
- L Yang
- Department of Hepatopancreatobiliary Surgery, Ningbo First Hospital, Ningbo, 315010, China
| | - Q Xu
- Department of Hepatopancreatobiliary Surgery, Ningbo First Hospital, Ningbo, 315010, China
| | - H Xie
- Department of Hepatopancreatobiliary Surgery, Ningbo First Hospital, Ningbo, 315010, China
| | - G Gu
- Department of Hepatopancreatobiliary Surgery, Ningbo First Hospital, Ningbo, 315010, China
| | - J Jiang
- Department of Hepatopancreatobiliary Surgery, Ningbo First Hospital, Ningbo, 315010, China.
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137
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Abstract
Porphyromonas gingivalis is one of the keystone pathogens associated with chronic periodontitis. All P. gingivalis strains examined thus far produce outer membrane vesicles. Recent studies have found that vesicles possess some well-known virulence factors of P. gingivalis such as adhesins, toxins and proteolytic enzymes. Carrying most of the characteristic features of their parent P. gingivalis cells, vesicles communicate with host cells and other members of microbial biofilms, resulting in the transmission of virulence factors into these host cells and the formation of pathogenic bacteria-dominated microbial communities. An in-depth understanding of both the nature and role of vesicles in the pathogenicity of P. gingivalis is both important and timely, particularly when speaking of periodontitis and its related systemic effects.
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Affiliation(s)
- H Xie
- Department of Oral Biology, School of Dentistry, Meharry Medical College, 1005 Dr DB Todd, Nashville, Tennessee, TN 37208, USA
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138
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Affiliation(s)
- H Xie
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610061, People's Republic of China
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139
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Gopalswamy N, Mäkelä P, Akiyama S, Yashiro S, Xie H, Thakur N, Kahler SW. LARGE SOLAR ENERGETIC PARTICLE EVENTS ASSOCIATED WITH FILAMENT ERUPTIONS OUTSIDE ACTIVE REGIONS. ACTA ACUST UNITED AC 2015. [DOI: 10.1088/0004-637x/806/1/8] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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140
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Zhou X, Sun T, Xie H, Zhang Y, Zeng H, Fu W. Extralevator abdominoperineal excision for low rectal cancer: a systematic review and meta-analysis of the short-term outcome. Colorectal Dis 2015; 17:474-81. [PMID: 25704132 DOI: 10.1111/codi.12921] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [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: 11/27/2014] [Accepted: 01/05/2015] [Indexed: 12/13/2022]
Abstract
AIM The superiority of extralevator abdominoperineal excision (ELAPE) over conventional abdominoperineal excision (APE) remains controversial, despite the publication of many studies on this issue. The aim of this meta-analysis was to provide a clear, evidence-based comparison of the two procedures. METHOD A systematic review and meta-analysis was conducted through a comprehensive search of the PubMed, EMBASE/Medline and Cochrane Central Library databases for all studies comparing ELAPE with conventional APE for low rectal cancer. Pooled data on circumferential resection margin (CRM) positivity, intra-operative bowel perforation, perineal wound complications and local recurrence were analysed. RESULTS Seven studies, involving a total of 2672 patients, were included. Analysis of the pooled data did not reveal a significant difference between the two operations regarding CRM positivity [risk ratio (RR) = 0.79, 95% CI: 0.40-1.57; P = 0.50, I(2) = 86%] and perineal wound complications (RR = 0.91, 95% CI: 0.71-1.16; P = 0.44, I(2) = 49%), and showed a borderline reduced risk of intra-operative bowel perforation for ELAPE, but still did not reveal a significant difference between the two groups (RR = 0.61, 95% CI: 0.37-1.00; P = 0.05, I(2) = 58%). CONCLUSION The current evidence does not indicate a statistically significant superiority of ELAPE over conventional APE in terms of CRM positivity and intra-operative bowel perforation.
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Affiliation(s)
- X Zhou
- Department of General Surgery, Peking University Third Hospital, Beijing, China
| | - T Sun
- Department of General Surgery, Peking University Third Hospital, Beijing, China
| | - H Xie
- Department of General Surgery, Peking University Third Hospital, Beijing, China
| | - Y Zhang
- Department of General Surgery, Peking University Third Hospital, Beijing, China
| | - H Zeng
- Department of General Surgery, Peking University Third Hospital, Beijing, China
| | - W Fu
- Department of General Surgery, Peking University Third Hospital, Beijing, China
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141
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Yang Y, Xie H, Cai W, Tang X. TH-AB-204-08: Phase Retrieval in Grating-Based X-Ray Differential Phase Contrast CT with Twin-Peaks in Phase-Stepping Curves. Med Phys 2015. [DOI: 10.1118/1.4926175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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142
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Hsieh C, Cheng Y, Xie H, Kokeny P, Jella P, Latif Z, Xuan Y, Haacke M. SU-D-303-06: Evaluations of Quantified Magnetic Moments From Different MRI Hardware. Med Phys 2015. [DOI: 10.1118/1.4923893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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143
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Chen C, Niu LN, Xie H, Zhang ZY, Zhou LQ, Jiao K, Chen JH, Pashley D, Tay F. Bonding of universal adhesives to dentine – Old wine in new bottles? J Dent 2015; 43:525-36. [DOI: 10.1016/j.jdent.2015.03.004] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Revised: 03/11/2015] [Accepted: 03/13/2015] [Indexed: 10/23/2022] Open
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144
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Lu H, Wang R, Xiong J, Xie H, Kayser B, Jia Z. In search for better pharmacological prophylaxis for acute mountain sickness: looking in other directions. Acta Physiol (Oxf) 2015; 214:51-62. [PMID: 25778288 DOI: 10.1111/apha.12490] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 02/23/2015] [Accepted: 03/11/2015] [Indexed: 12/15/2022]
Abstract
Despite decades of research, the exact pathogenic mechanisms underlying acute mountain sickness (AMS) are still poorly understood. This fact frustrates the search for novel pharmacological prophylaxis for AMS. The prevailing view is that AMS results from an insufficient physiological response to hypoxia and that prophylaxis should aim at stimulating the response. Starting off from the opposite hypothesis that AMS may be caused by an initial excessive response to hypoxia, we suggest that directly or indirectly blunting-specific parts of the response might provide promising research alternatives. This reasoning is based on the observations that (i) humans, once acclimatized, can climb Mt Everest experiencing arterial partial oxygen pressures (PaO2) as low as 25 mmHg without AMS symptoms; (ii) paradoxically, AMS usually develops at much higher PaO2 levels; and (iii) several biomarkers, suggesting initial activation of specific pathways at such PaO2, are correlated with AMS. Apart from looking for substances that stimulate certain hypoxia triggered effects, such as the ventilatory response to hypoxia, we suggest to also investigate pharmacological means aiming at blunting certain other specific hypoxia-activated pathways, or stimulating their agonists, in the quest for better pharmacological prophylaxis for AMS.
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Affiliation(s)
- H. Lu
- Key Laboratory of the Plateau of Environmental Damage Control; Lanzhou General Hospital of Lanzhou Military Command; Lanzhou China
| | - R. Wang
- Key Laboratory of the Plateau of Environmental Damage Control; Lanzhou General Hospital of Lanzhou Military Command; Lanzhou China
| | - J. Xiong
- Key Laboratory of the Plateau of Environmental Damage Control; Lanzhou General Hospital of Lanzhou Military Command; Lanzhou China
| | - H. Xie
- Key Laboratory of the Plateau of Environmental Damage Control; Lanzhou General Hospital of Lanzhou Military Command; Lanzhou China
| | - B. Kayser
- Institute of Sports Sciences and Department of Physiology; University of Lausanne; Lausanne Switzerland
| | - Z.P. Jia
- Key Laboratory of the Plateau of Environmental Damage Control; Lanzhou General Hospital of Lanzhou Military Command; Lanzhou China
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Wang C, Hu SM, Xie H, Qiao SG, Liu H, Liu CF. Role of mitochondrial ATP-sensitive potassium channel-mediated PKC-ε in delayed protection against myocardial ischemia/reperfusion injury in isolated hearts of sevoflurane-preconditioned rats. ACTA ACUST UNITED AC 2015; 48:528-36. [PMID: 25831209 PMCID: PMC4470312 DOI: 10.1590/1414-431x20143876] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [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: 01/27/2014] [Accepted: 10/07/2014] [Indexed: 01/23/2023]
Abstract
This study aimed to determine the role of mitochondrial adenosine
triphosphate-sensitive potassium (mitoKATP) channels and protein kinase C
(PKC)-ε in the delayed protective effects of sevoflurane preconditioning using
Langendorff isolated heart perfusion models. Fifty-four isolated perfused rat hearts
were randomly divided into 6 groups (n=9). The rats were exposed for 60 min to 2.5%
sevoflurane (the second window of protection group, SWOP group) or 33% oxygen
inhalation (I/R group) 24 h before coronary occlusion. The control group (CON) and
the sevoflurane group (SEVO) group were exposed to 33% oxygen and 2.5% sevoflurane
for 60 min, respectively, without coronary occlusion. The mitoKATP channel
inhibitor 5-hydroxydecanoate (5-HD) was given 30 min before sevoflurane
preconditioning (5-HD+SWOP group). Cardiac function indices, infarct sizes, serum
cardiac troponin I (cTnI) concentrations, and the expression levels of phosphorylated
PKC-ε (p-PKC-ε) and caspase-8 were measured. Cardiac function was unchanged, p-PKC-ε
expression was upregulated, caspase-8 expression was downregulated, cTnI
concentrations were decreased, and the infarcts were significantly smaller
(P<0.05) in the SWOP group compared with the I/R group. Cardiac function was
worse, p-PKC-ε expression was downregulated, caspase-8 expression was upregulated,
cTnI concentration was increased and infarcts were larger in the 5-HD+SWOP group
(P<0.05) compared with the SWOP group. The results suggest that
mitoKATP channels are involved in the myocardial protective effects of
sevoflurane in preconditioning against I/R injury, by regulating PKC-ε
phosphorylation before ischemia, and by downregulating caspase-8 during
reperfusion.
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Affiliation(s)
- C Wang
- Department of Anesthesiology and Critical Care, The Second Affiliate Hospital, Soochow University, Suzhou, China
| | - S M Hu
- Institute of Neuroscience, Soochow University, Suzhou, China
| | - H Xie
- Department of Anesthesiology and Critical Care, The Second Affiliate Hospital, Soochow University, Suzhou, China
| | - S G Qiao
- Department of Anesthesiology and Critical Care, The Second Affiliate Hospital, Soochow University, Suzhou, China
| | - H Liu
- Department of Anesthesiology and Pain Medicine, University of California Davis Health System, Davis, CA, USA
| | - C F Liu
- Institute of Neuroscience, Soochow University, Suzhou, China
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146
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Zou XB, Shi HT, Xie H, Wang X, Zhang G. Using fast moving electrode to achieve overvoltage breakdown of gas switch stressed with high direct voltages. Rev Sci Instrum 2015; 86:034705. [PMID: 25832256 DOI: 10.1063/1.4914397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A small-scale fast risetime gas switch attached to a 50 Ω pulse forming line is tested. It includes a fast moving electrode and a fixed electrode. For the applied direct voltages, such as 2.8 kV, 2.0 kV, and 1.0 kV, the risetimes of this switch are tested to be ∼3.8 ns, ∼2.3 ns, and ∼1.1 ns, respectively, while the risetimes of a switch with two fixed electrodes are about ∼10.1 ns, ∼9.0 ns, and ∼3.6 ns. The results of high-speed photography and laser interferometry reveal that the moving electrode will obviously shorten discharge spark length but almost will not change the inter-electrodes gas pressure. The reason of shortening spark length is the existence of the discharge time delay of gas switch. After moving to the static breakdown spacing, the fast moving electrode will move on for an additional distance within the discharge time delay, which makes gas switch achieve overvoltage breakdown under high direct voltages and therefore leads to shorter spark length and faster switch risetime.
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Affiliation(s)
- X B Zou
- State Key Laboratory of Control and Simulation of Power System and Generation Equipment, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - H T Shi
- State Key Laboratory of Control and Simulation of Power System and Generation Equipment, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - H Xie
- State Key Laboratory of Control and Simulation of Power System and Generation Equipment, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Xinxin Wang
- State Key Laboratory of Control and Simulation of Power System and Generation Equipment, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
| | - Guixin Zhang
- State Key Laboratory of Control and Simulation of Power System and Generation Equipment, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
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147
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Xie H, She GM, Wang C, Zhang LY, Liu CF. The gender difference in effect of sevoflurane exposure on cognitive function and hippocampus neuronal apoptosis in rats. Eur Rev Med Pharmacol Sci 2015; 19:647-657. [PMID: 25753883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
OBJECTIVE Anesthesia and surgery can induce postoperative cognitive dysfunction. Ser-133 phosphorylation sites of cAMP-response element binding protein (CREB) is a key gene that mediate a variety of downstream transcription initiation factors, regulate neuronal survival and promote the expression of a large number of genes. Thus, CREB may play a role in this impairment. We hypothesize that and sevoflurane-induced cognitive impairment possibly via inhibiting the expression of CREB downstream genes and proteins. MATERIALS AND METHODS To test this hypothesis, adult Sprague-Dawley rats were subjected to sevoflurane exposure and were tested with a series of behavioral experiments (open field, passive avoidance test and Morris water maze test) at different time (1 d to 95 d). Besides, blood gas changes and expiratory sevoflurane concentrations were examined at 2 h; the levels of phosphorylated CREB 1, the protein Bcl-2, Caspase-8 and Caspase-3 were assessed at 1 week and 3 months after anesthesia. We also conducted a comparison in sevoflurane-induced cognitive impairment between male and female rats. RESULTS AND CONCLUSIONS Here, we found that sevoflurane anesthesia can impair short-term cognitive function, which may be via down-regulating p-CREB1 and Bcl-2 expression and up-regulating Caspase-8 expression to reduce hippocampus neuronal apoptosis, and male rats suffered a more severe cognitive dysfunction than female rats. In addition, sevoflurane can produce a reversible long-term cognitive dysfunction in rats.
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Affiliation(s)
- H Xie
- Department of Anesthesiology, The Second Affiliate Hospital of Soochow University, Suzhou, China.
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148
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Ren J, Zuo GZ, Hu JS, Sun Z, Yang QX, Li JG, Zakharov LE, Xie H, Chen ZX. A flowing liquid lithium limiter for the Experimental Advanced Superconducting Tokamak. Rev Sci Instrum 2015; 86:023504. [PMID: 25725839 DOI: 10.1063/1.4907622] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A program involving the extensive and systematic use of lithium (Li) as a "first," or plasma-facing, surface in Tokamak fusion research devices located at Institute of Plasma Physics, Chinese Academy of Sciences, was started in 2009. Many remarkable results have been obtained by the application of Li coatings in Experimental Advanced Superconducting Tokamak (EAST) and liquid Li limiters in the HT-7 Tokamak-both located at the institute. In furtherance of the lithium program, a flowing liquid lithium (FLiLi) limiter system has been designed and manufactured for EAST. The design of the FLiLi limiter is based on the concept of a thin flowing film which was previously tested in HT-7. Exploiting the capabilities of the existing material and plasma evaluation system on EAST, the limiter will be pre-wetted with Li and mechanically translated to the edge of EAST during plasma discharges. The limiter will employ a novel electro-magnetic pump which is designed to drive liquid Li flow from a collector at the bottom of limiter into a distributor at its top, and thus supply a continuously flowing liquid Li film to the wetted plasma-facing surface. This paper focuses on the major design elements of the FLiLi limiter. In addition, a simulation of incoming heat flux has shown that the distribution of heat flux on the limiter surface is acceptable for a future test of power extraction on EAST.
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Affiliation(s)
- J Ren
- Institute of Plasma Physics, Chinese Academy of Sciences, 230031 Hefei, China
| | - G Z Zuo
- Institute of Plasma Physics, Chinese Academy of Sciences, 230031 Hefei, China
| | - J S Hu
- Institute of Plasma Physics, Chinese Academy of Sciences, 230031 Hefei, China
| | - Z Sun
- Institute of Plasma Physics, Chinese Academy of Sciences, 230031 Hefei, China
| | - Q X Yang
- Institute of Plasma Physics, Chinese Academy of Sciences, 230031 Hefei, China
| | - J G Li
- Institute of Plasma Physics, Chinese Academy of Sciences, 230031 Hefei, China
| | - L E Zakharov
- USA Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543, USA
| | - H Xie
- Institute of Plasma Physics, Chinese Academy of Sciences, 230031 Hefei, China
| | - Z X Chen
- Institute of Plasma Physics, Chinese Academy of Sciences, 230031 Hefei, China
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149
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Xie H, Chen D, Li L, Yu X, Wu C, Gu H, Tang X, Peng A, Huang J. Immune response of γδT cells in Schistosome japonicum-infected C57BL/6 mouse liver. Parasite Immunol 2015; 36:658-67. [PMID: 25130072 DOI: 10.1111/pim.12135] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Accepted: 07/29/2014] [Indexed: 12/22/2022]
Abstract
Systematic evaluation of the role of γδT cells during the Schistosoma japonicum infection has not been reported, despite the fact that γδT cells contribute to many infectious diseases in innate immunity. Therefore, the aim of this study was to observe the properties of γδT cells in the liver of C57BL/6 mice infected by S. japonicum. In this report, using immuno-fluorescent histological analysis, γδT cells were found around hepatic granulomatous. Moreover, the flow cytometry results revealed that the percentage of hepatic γδT cells increased significantly after S. japonicum infection. More interestingly, a subset of CD3(-)γδTCR(+) cells were found and markedly increased after infection. Furthermore, expression of activation markers (CD25 and CD69) and cytokine profiles were detected in these hepatic CD3(+)γδTCR(+) and CD3(-)γδTCR(+) cells. The significantly higher level of CD69, IL-4 and IL-17 were observed in CD3(+)γδTCR(+) cells after infection, suggesting that CD3(+)γδTCR(+) cells instead of CD3(-)γδTCR(+) cells might play a predominant role during the infection. Finally, our results indicated that the expression of NKG2D on CD3(+)γδTCR(+) cells was higher than that on CD3(-)γδTCR(+) cells. Collectively, γδT cells could play an important role in the liver of C57BL/6 mouse during japonicum infection.
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Affiliation(s)
- H Xie
- Functional Experiment Centre, Guangzhou Medical University, Guangzhou, China
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150
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Wu N, Ming X, Xiao J, Wu Z, Chen X, Shinawi M, Shen Y, Yu G, Liu J, Xie H, Gucev ZS, Liu S, Yang N, Al-Kateb H, Chen J, Zhang J, Hauser N, Zhang T, Tasic V, Liu P, Su X, Pan X, Liu C, Wang L, Shen J, Shen J, Chen Y, Zhang T, Zhang J, Choy KW, Wang J, Wang Q, Li S, Zhou W, Guo J, Wang Y, Zhang C, Zhao H, An Y, Zhao Y, Wang J, Liu Z, Zuo Y, Tian Y, Weng X, Sutton VR, Wang H, Ming Y, Kulkarni S, Zhong TP, Giampietro PF, Dunwoodie SL, Cheung SW, Zhang X, Jin L, Lupski JR, Qiu G, Zhang F. TBX6 null variants and a common hypomorphic allele in congenital scoliosis. N Engl J Med 2015; 372:341-50. [PMID: 25564734 PMCID: PMC4326244 DOI: 10.1056/nejmoa1406829] [Citation(s) in RCA: 203] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND Congenital scoliosis is a common type of vertebral malformation. Genetic susceptibility has been implicated in congenital scoliosis. METHODS We evaluated 161 Han Chinese persons with sporadic congenital scoliosis, 166 Han Chinese controls, and 2 pedigrees, family members of which had a 16p11.2 deletion, using comparative genomic hybridization, quantitative polymerase-chain-reaction analysis, and DNA sequencing. We carried out tests of replication using an additional series of 76 Han Chinese persons with congenital scoliosis and a multicenter series of 42 persons with 16p11.2 deletions. RESULTS We identified a total of 17 heterozygous TBX6 null mutations in the 161 persons with sporadic congenital scoliosis (11%); we did not observe any null mutations in TBX6 in 166 controls (P<3.8×10(-6)). These null alleles include copy-number variants (12 instances of a 16p11.2 deletion affecting TBX6) and single-nucleotide variants (1 nonsense and 4 frame-shift mutations). However, the discordant intrafamilial phenotypes of 16p11.2 deletion carriers suggest that heterozygous TBX6 null mutation is insufficient to cause congenital scoliosis. We went on to identify a common TBX6 haplotype as the second risk allele in all 17 carriers of TBX6 null mutations (P<1.1×10(-6)). Replication studies involving additional persons with congenital scoliosis who carried a deletion affecting TBX6 confirmed this compound inheritance model. In vitro functional assays suggested that the risk haplotype is a hypomorphic allele. Hemivertebrae are characteristic of TBX6-associated congenital scoliosis. CONCLUSIONS Compound inheritance of a rare null mutation and a hypomorphic allele of TBX6 accounted for up to 11% of congenital scoliosis cases in the series that we analyzed. (Funded by the National Basic Research Program of China and others.).
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Affiliation(s)
- N Wu
- The authors' affiliations are listed in the Appendix
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