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Huang HY, Wu DW, Zhu Q, Yu Y, Wang HX, Wang J, Ga M, Meng XY, Du JT, Miao SM, Zhao ZX, Wang X, Shang P, Guo MJ, Liu LH, Tang Y, Li N, Cao C, Xu BH, Sun Y, He J. [Progress on clinical trials of common gastrointestinal cancer drugs in China from 2012 to 2021]. Zhonghua Zhong Liu Za Zhi 2022; 44:276-281. [PMID: 35316878 DOI: 10.3760/cma.j.cn112152-20211207-00907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: Systematically summarize the research progress of clinical trials of gastric cancer oncology drugs and the overview of marketed drugs in China from 2012 to 2021, providing data and decision-making evidence for relevant departments. Methods: Based on the registration database of the drug clinical trial registration and information disclosure platform of Food and Drug Administration of China and the data query system of domestic and imported drugs, the information on gastric cancer drug clinical trials, investigational drugs and marketed drugs from January 1, 2012 to December 31, 2021 was analyzed, and the differences between Chinese and foreign enterprises in terms of trial scope, trial phase, treatment lines and drug type, effect and mechanism studies were compared. Results: A total of 114 drug clinical trials related to gastric tumor were registered in China from 2012 to 2021, accounting for 3.7% (114/3 041) of all anticancer drug clinical trials in the same period, the registration number showed a significant growth rate after 2016 and reached its peak with 32 trials in 2020. Among them, 85 (74.6%, 85/114) trials were initiated by Chinese pharmaceutical enterprise. Compared with foreign pharmaceutical enterprise, Chinese pharmaceutical enterprise had higher rates of phase I trials (35.3% vs 6.9%, P=0.001), but the rate of international multicenter trials (11.9% vs 67.9%, P<0.001) was relatively low. There were 76 different drugs involved in relevant clinical trials, of which 65 (85.5%) were targeted drugs. For targeted drugs, HER2 is the most common one (14 types), followed by PD-1 and multi-target VEGER. In the past ten years, 3 of 4 marketed drugs for gastric cancer treatment were domestic and included in the national medical insurance directory. Conclusions: From 2012 to 2021, China has made some progress in drug research and development for gastric carcinoma. However, compared with the serious disease burden, it is still insufficient. Targeted strengthening of research and development of investment in many aspects of gastric cancer drugs, such as new target discovery, matured target excavating, combination drug development and early line therapy promotion, is the key work in the future, especially for domestic companies.
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Affiliation(s)
- H Y Huang
- Department of Clinical Trials Center, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - D W Wu
- Department of Clinical Trials Center, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Q Zhu
- School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Y Yu
- Department of Clinical Trials Center, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - H X Wang
- National Center for Drug Evaluation, National Medical Products Administration, Beijing 100022, China
| | - J Wang
- National Center for Drug Evaluation, National Medical Products Administration, Beijing 100022, China
| | - M Ga
- Department of Clinical Trials Center, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - X Y Meng
- The University of Melbourne, Faculty of Medicine, Dentistry and Health Sciences, Melbourne 3010, Australia
| | - J T Du
- Department of Clinical Trials Center, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - S M Miao
- Department of Clinical Trials Center, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Z X Zhao
- Department of Clinical Trial Center, China-Japan Friendship Hospital, Beijing 100029, China
| | - X Wang
- Clinical Trials Research Center, Beijing Hoppital, National Center of Getrontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - P Shang
- National Clinical Research Center for Cardiovascular Diseases, Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - M J Guo
- Department of Health Insurance Information Research, Institute of Medical Information, Chinese Academy of Medical Sciences, Beijing 100020, China
| | - L H Liu
- Department of Clinical Trial Center, China-Japan Friendship Hospital, Beijing 100029, China
| | - Y Tang
- Department of Clinical Trials Center, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - N Li
- Department of Clinical Trials Center, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - C Cao
- Zhongguancun Jiutai Good Clinical Practice Union, Beijing 100027, China
| | - B H Xu
- Department of Clinical Trials Center, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y Sun
- Department of Clinical Trials Center, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - J He
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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Liu S, Xing L, Zhang J, Wang K, Duan M, Wei M, Zhang B, Chang Z, Zhang H, Shang P. Expression pattern of CRYAB and CTGF genes in two pig breeds at different altitudes. ARQ BRAS MED VET ZOO 2022. [DOI: 10.1590/1678-4162-12403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
ABSTRACT Tibetan pigs are characterized by significant phenotypic differences relative to lowland pigs. Our previous study demonstrated that the genes CRYAB and CTGF were differentially expressed in heart tissues between Tibetan (highland breed) and Yorkshire (lowland breed) pigs, indicating that they might participate in hypoxia adaptation. CRYAB (ɑB-crystallin) and CTGF (connective tissue growth factor) have also been reported to be associated with lung development. However, the expression patterns of CRYAB and CTGF in lung tissues at different altitudes and their genetic characterization are not well understood. In this study, qRT-PCR and western blot of lung tissue revealed higher CRYAB expression levels in highland and middle-highland Tibetan and Yorkshire pigs than in their lowland counterparts. With an increase in altitude, the expression level of CTGF increased in Tibetan pigs, whereas it decreased in Yorkshire pigs. Furthermore, two novel single-nucleotide polymorphism were identified in the 5′ flanking region of CRYAB (g.39644482C>T and g.39644132T>C) and CTGF (g.31671748A>G and g.31671773T>G). The polymorphism may partially contribute to the differences in expression levels between groups at the same altitude. These findings provide novel insights into the high-altitude hypoxia adaptations of Tibetan pigs.
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Affiliation(s)
- S. Liu
- Tibet Agriculture and Animal Husbandry College, People’s Republic of China; The Provincial and Ministerial co-founded collaborative innovation center for R & D in Tibet characteristic Agricultural and Animal Husbandry resources, People’s Republic of China
| | - L. Xing
- Tibet Agriculture and Animal Husbandry College, People’s Republic of China; The Provincial and Ministerial co-founded collaborative innovation center for R & D in Tibet characteristic Agricultural and Animal Husbandry resources, People’s Republic of China
| | - J. Zhang
- Tibet Agriculture and Animal Husbandry College, People’s Republic of China; The Provincial and Ministerial co-founded collaborative innovation center for R & D in Tibet characteristic Agricultural and Animal Husbandry resources, People’s Republic of China
| | - K. Wang
- Henan Agricultural University, People’s Republic of China
| | - M. Duan
- Tibet Agriculture and Animal Husbandry College, People’s Republic of China; The Provincial and Ministerial co-founded collaborative innovation center for R & D in Tibet characteristic Agricultural and Animal Husbandry resources, People’s Republic of China
| | - M. Wei
- Tibet Agriculture and Animal Husbandry College, People’s Republic of China; The Provincial and Ministerial co-founded collaborative innovation center for R & D in Tibet characteristic Agricultural and Animal Husbandry resources, People’s Republic of China
| | - B. Zhang
- China Agricultural University, People’s Republic of China
| | - Z. Chang
- Tibet Agriculture and Animal Husbandry College, People’s Republic of China
| | - H. Zhang
- China Agricultural University, People’s Republic of China
| | - P. Shang
- Tibet Agriculture and Animal Husbandry College, People’s Republic of China; The Provincial and Ministerial co-founded collaborative innovation center for R & D in Tibet characteristic Agricultural and Animal Husbandry resources, People’s Republic of China
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Gide T, Silva I, Quek C, Ferguson P, Batten M, Shang P, Ahmed T, Menzies A, Carlino M, Saw R, Thompson J, Wilmott J, Scolyer R, Long G. Analysis of clinical and molecular profiles of patients with innate resistance to ANTI-PD-1 +/- ANTI-CTLA-4 immunotherapy in metastatic melanoma. Pathology 2021. [DOI: 10.1016/j.pathol.2021.05.087] [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: 11/30/2022]
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Shang ZD, Tan ZK, Liu SZ, Li JK, Qiang-Ba YZ, Shang P, Wang HH. Characterization of bacterial microbiota diversity in Tibetan pigs fed with green forage in Linzhi of the Tibet autonomous region. J BIOL REG HOMEOS AG 2019; 33:447-455. [PMID: 30945523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The acute shortage of forage resources is a serious problem for Tibetan pigs in the Tibet region, and the composition of feed can change the structure of the intestinal flora. This study first reported the effect of Alfalfa and Chenopodium glaucum feeding on the microbial diversity in Tibetan pigs, contributing to the forage exploitation of Tibetan pigs in the Tibet region.
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Affiliation(s)
- Z D Shang
- College of Animal Science, Tibet Agricultural and Animal Husbandry University, Linzhi, People's Republic of China
- Tibetan Plateau Feed Processing Research Center, Linzhi, People's Republic of China
| | - Z K Tan
- College of Animal Science, Tibet Agricultural and Animal Husbandry University, Linzhi, People's Republic of China
- Tibetan Plateau Feed Processing Research Center, Linzhi, People's Republic of China
| | - S Z Liu
- College of Animal Science, Tibet Agricultural and Animal Husbandry University, Linzhi, People's Republic of China
- Tibetan Plateau Feed Processing Research Center, Linzhi, People's Republic of China
| | - J K Li
- College of Animal Science, Tibet Agricultural and Animal Husbandry University, Linzhi, People's Republic of China
- Laboratory of Detection and Monitoring of Highland Animal Disease, Linzhi, Tibet, People's Republic of China
| | - Y Z Qiang-Ba
- College of Animal Science, Tibet Agricultural and Animal Husbandry University, Linzhi, People's Republic of China
- Tibetan pig Collaborative Research Center (Open platform), Linzhi, Tibet, People's Republic of China
| | - P Shang
- College of Animal Science, Tibet Agricultural and Animal Husbandry University, Linzhi, People's Republic of China
- Tibetan pig Collaborative Research Center (Open platform), Linzhi, Tibet, People's Republic of
| | - H H Wang
- College of Animal Science, Tibet Agricultural and Animal Husbandry University, Linzhi, People's Republic of China
- Tibetan Plateau Feed Processing Research Center, Linzhi, People's Republic of China
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Quek C, Shang P, Rawson R, Ferguson P, Saw R, Long G, Mann G, Scolyer R, Wilmott J. 21. Recurrent hotspot SF3B1 mutations in mucosal melanoma: Frequency and impact on survival. Pathology 2019. [DOI: 10.1016/j.pathol.2018.09.021] [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: 11/16/2022]
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Van Kampen SJ, Johansen AKZ, Shang P, Versteeg D, Molenaar B, Geijsen N, Van Rooij E. P471Transient and local modulation of cardiomyocyte cell function by intracellular protein delivery in vivo. Cardiovasc Res 2018. [DOI: 10.1093/cvr/cvy060.329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
| | | | - P Shang
- Hubrecht Institute, Utrecht, Netherlands
| | - D Versteeg
- University Medical Center Utrecht, Utrecht, Netherlands
| | - B Molenaar
- Hubrecht Institute, Utrecht, Netherlands
| | - N Geijsen
- Hubrecht Institute, Utrecht, Netherlands
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Wu Y, Shang P, Che L, Ye T, Wang L, Qiu S. The necessity of strength evaluation in assessment of clinical outcome after shoulder surgery : follow-up data from patients with complex proximal humerus fractures treated by locking plate fixation. Acta Orthop Belg 2016; 82:189-196. [PMID: 27682279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
In order to minimize the bias of Constant score we modified the allocation of strength subscore. One hundred and two patients with 3- and 4-part proximal humerus fractures were treated using locking plate fixation and followed up for > 1 year. The clinical outcomes were assessed by DASH score abbreviated Constant score (AbbCS strength item excluded) modified Constant score (ModCS with 12-pound strength) and original Constant score (CS with 25-pound strength). The satisfaction rate was determined for each scoring instrument. Compared to CS the satisfaction rate was significantly higher in DASH score AbbCS and ModCS (all p < 0.001) but the latter 3 groups did not show significant difference. ROC analysis showed that a > 7-pound shoulder strength was present in patients with satisfied outcome assessed by DASH score. In conclusion strength evaluation is necessary for the assessment of shoulder function but the over-allocated strength should be modified in Constant score.
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Li X, Wu G, Shang P, Bao J, Lu J, Yue Z. Anti-nephrolithic potential of catechin in melamine-related urolithiasis via the inhibition of ROS, apoptosis, phospho-p38, and osteopontin in male Sprague-Dawley rats. Free Radic Res 2015; 49:1249-58. [DOI: 10.3109/10715762.2015.1061187] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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9
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Deji B, Shang P, Danzeng W, Zhang H, Qiangba Y. Expression and hypoxia adaptation analysis of the EPO gene in different tissues of plateau Tibetan pigs. Genet Mol Res 2015; 14:1700-6. [DOI: 10.4238/2015.march.6.16] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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10
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Liu H, Hu G, Shang P, Shen Y, Nie P, Peng L, Xu H. Histological characteristics of induced membranes in subcutaneous, intramuscular sites and bone defect. Orthop Traumatol Surg Res 2013; 99:959-64. [PMID: 24211125 DOI: 10.1016/j.otsr.2013.08.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2012] [Revised: 08/24/2013] [Accepted: 08/27/2013] [Indexed: 02/02/2023]
Abstract
BACKGROUND The induced membrane technique was proposed as a treatment of large segmental bone defects. The influence of the surrounding tissues on its characteristics remains unknown. It is therefore not known which kind of plastic surgery procedure (muscular or facio-cutaneous flap) would optimize bone osteointegration within a bone defect reconstructed using the induced-membrane technique. HYPOTHESIS We hypothesized that membrane characteristics could be influenced by the soft-tissue environment either subcutaneous or muscular. OBJECTIVE To evaluate the histological characteristics of poly-methylmethacrylate (PMMA) induced membranes in intramuscular, subcutaneous and bony environment (radius defects) at 2 steps: spacer implantation; secondary bone graft and its subsequent osteintegration after spacer removal. METHODS PMMA-induced membranes were obtained in the three sites of 15 rabbits. Subsequent new bone formation was studied in the same environments in 24 other rabbits. Six weeks after the initial implantation, PMMA spacers were replaced with iliac autografts. Animals were euthanized at 2, 4, and 8 weeks postoperatively. Tissue samples were harvested and stained with hematoxylin and eosin. The histological characteristics of the membrane (thickness and microvessel density) and the newly-formed bone (cortical thickness) were quantitatively analyzed. RESULTS The membranes in the subcutaneous sites developed quicker, were thicker and had the lowest microvessel density (P<0.01). The membranes in the intramuscular sites developed later and were thinner (P<0.01). The membranes in the osseous defects had the greatest microvessel density (P<0.01). After bone grafting, induced membranes became thinner and their microvessel density decreased substantially, but maintained better in osseous site. The newly-formed bone that developed in the radius defects, had the thickest cortices (P<0.01). CONCLUSIONS The evolution of membranes induced in the intramuscular and subcutaneous environments was close to that of the bone defect model, although bone formation appeared weaker.
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Affiliation(s)
- H Liu
- Department of Orthopaedic Surgery, Second Affiliated Hospital of Wenzhou Medical University, 109, Xueyuanxi Road, Wenzhou 325000, China
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Shang P, Hoogerbrugge J, Baarends WM, Grootegoed JA. Evolution of testis-specific kinases TSSK1B and TSSK2 in primates. Andrology 2012; 1:160-8. [PMID: 23258646 DOI: 10.1111/j.2047-2927.2012.00021.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Revised: 08/28/2012] [Accepted: 08/30/2012] [Indexed: 11/30/2022]
Abstract
The testis-specific serine/threonine protein kinases TSSK1 and TSSK2 are known to be essential for male fertility, in mice. The enzymes are present in elongating spermatids, and targeted deletion of the two genes Tssk1 and Tssk2 results in dysregulation of spermiogenesis. The mouse genes are genetically closely linked, forming a Tssk1-Tssk2 tandem. In human, TSSK1 is present in the form of a pseudogene, TSSK1A, which is linked to an intact TSSK2 gene, and in the form of an intact gene, TSSK1B, which is not genetically linked to TSSK2. Studies on conservation of genes and gene function between mouse and human are relevant, to be able to use mouse models for studies on human infertility, and to evaluate possible targets for non-hormonal contraception targeting the male. Therefore, we have performed a detailed analysis of the evolution of genes encoding TSSK1 and TSSK2 among mammals, in particular among primates. This study includes functional analysis of replacement mutation K27R in TSSK2, which is frequently observed among humans. In primates, the kinase domains of TSSK1B and TSSK2 have evolved under negative selection, reflecting the importance to maintain their kinase activity. Positive selection was observed for the C-terminal domain of TSSK1B, which indicates that TSSK1B and TSSK2 may perform at least partly differential functions.
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Affiliation(s)
- P Shang
- Department of Reproduction and Development, Erasmus MC-University Medical Center, Rotterdam, The Netherlands
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Yin DC, Lu QQ, Chen RQ, Xie SX, Liu YM, Zhang XF, Zhu L, Liu ZT, Shang P. Utilization of desiccant for enhancing protein crystallization. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311080676] [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: 11/10/2022] Open
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Wang Y, Yin DC, Liu YM, Shi JZ, Lu HM, Shi ZH, Qian AR, Shang P. Design of shared instruments to utilize simulated gravities generated by a large-gradient, high-field superconducting magnet. Rev Sci Instrum 2011; 82:034705. [PMID: 21456774 DOI: 10.1063/1.3557402] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A high-field superconducting magnet can provide both high-magnetic fields and large-field gradients, which can be used as a special environment for research or practical applications in materials processing, life science studies, physical and chemical reactions, etc. To make full use of a superconducting magnet, shared instruments (the operating platform, sample holders, temperature controller, and observation system) must be prepared as prerequisites. This paper introduces the design of a set of sample holders and a temperature controller in detail with an emphasis on validating the performance of the force and temperature sensors in the high-magnetic field.
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Affiliation(s)
- Y Wang
- Key Lab of Space Bioscience & Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an 710072, Shaanxi, People's Republic of China
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Petford-Long AK, Larson DJ, Cerezo A, Portier X, Shang P, Ozkaya D, Long T, Clifton PH. The role of atomic scale investigation in the development of nanoscale materials for information storage applications. Microsc Microanal 2004; 10:366-372. [PMID: 15233855 DOI: 10.1017/s1431927604040528] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2002] [Indexed: 05/24/2023]
Abstract
It is well established that the response of devices based on the giant magnetoresistance (GMR) effect depends critically on film microstructure, with parameters such as interfacial abruptness, the roughness and waviness of the layers, and grain size being crucial. Such devices have applications in information storage systems, and are therefore of great technological interest as well as being of fundamental scientific interest. The layers must be studied at high spatial resolution if the microstructural parameters are to be characterized with sufficient detail to enable the effects of fabrication conditions on properties to be understood, and the techniques of high resolution electron microscopy, transmission electron microscopy chemical mapping, and atom probe microanalysis are ideally suited. This article describes the application of these techniques to a range of materials including spin valves, spin tunnel junctions, and GMR multilayers.
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Affiliation(s)
- A K Petford-Long
- Department of Materials, University of Oxford, Parks Rd, Oxford OX1 3PH, UK.
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Xu YT, Gu JF, Shang P. [Experimental study of bone repair induced by cryopreserved allograft periosteum and fetal bone composition in bone defect]. Zhongguo Xiu Fu Chong Jian Wai Ke Za Zhi 2001; 15:183-7. [PMID: 11393964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
OBJECTIVE To investigate the repairing effect of transplantation of allogeneic fetal bone in combination with a covering cryopreserved periosteal allograft to bone defect. METHODS Twenty Long-eared white male rabbits were chosen as experimental model of bilateral 12 mm combined bony and periosteal radial defect. Cryopreserved allograft periosteum with allogeneic fetal bone were implanted in the left defect as experimental side and fetal bone was simply transplanted in the right defect as control side. Bone repair process in the two groups were compared by macroscopy, microscopy, roentgenograms and the contents of calcium and phosphate in the defect area at 2, 4, 8 and 12 weeks after transplantation. RESULTS There was significant statistic difference in the contents of calcium and phosphate between the experimental and control sides at 4, 8 and 12 weeks after transplantation (P < 0.05). With time passing by, the contents of calcium and phosphate have the increasing trends. In the experimental group, lamella bone was seen and medullary canal recanalized at 8 weeks postoperatively. The histological section showed the bone lacuna and lamella bone were formed. CONCLUSION It suggests that allogeneic fetal bone in combination with a covering cryopreserved periosteal allograft can promote bone repair, and allogeneic fetal bone is excellent bone substitute.
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Affiliation(s)
- Y T Xu
- Department of Orthopedic Surgery, Central Hospital of Jingzhou City, Jingzhou Hubei, P. R. China 434020
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Cho CH, Mei QB, Shang P, Lee SS, So HL, Guo X, Li Y. Study of the gastrointestinal protective effects of polysaccharides from Angelica sinensis in rats. Planta Med 2000; 66:348-351. [PMID: 10865452 DOI: 10.1055/s-2000-8552] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We studied the protective effects of polysaccharides isolated from the root of Angelica sinensis (Oliv.) (Danggui) on gastrointestinal damage induced by ethanol or indomethacin in rats. Oral administration of ethanol provoked a marked hemorrhagic damage in the glandular mucosa, which was accompanied with a significant increase of myeloperoxidase (MPO) activity, a marker enzyme for inflammation and neutrophil infiltration. An extract from Angelica, which mainly consisted of polysaccharides (95%) (AP), dose-dependently prevented gastric mucosal damage. This ulcer protective effect could last at least 12 h after administration. Prostaglandin E2 produced a similar anti-lesion effect. AP and prostaglandin E2 also reduced mucosal MPO activity. Indomethacin-induced gastrointestinal damage, another neutrophil-dependent lesion model in the gastrointestinal tract, was also prevented by AP pretreatment. The present findings suggest that polysaccharides from Angelica possess an anti-inflammatory action, perhaps through the inhibitory action on neutrophil infiltration in the gastrointestinal mucosa. AP could potentially be useful to prevent any neutrophil-dependent mucosal injury in the gastrointestinal tract.
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Affiliation(s)
- C H Cho
- Department of Pharmacology, Faculty of Medicine, University of Hong Kong, China.
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Shang P, Cheng TT, Aindow M. A high-resolution electron microscopy study of steps on lamellar γ-α2interfaces in a low-misfit TiAl-based alloy. ACTA ACUST UNITED AC 1999. [DOI: 10.1080/01418619908214299] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Yang G, Shang P, Jones IP, Abell JS, Gough CE. Monoclinic phase transition and twinning in Bi2Sr2CaCu2Oy single crystals. Phys Rev B Condens Matter 1993; 48:16873-16876. [PMID: 10008286 DOI: 10.1103/physrevb.48.16873] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Yang G, Shang P, Sutton SD, Jones IP, Abell JS, Gough CE. Competing pinning mechanisms in Bi2Sr2CaCu2Oy single crystals by magnetic and defect structural studies. Phys Rev B Condens Matter 1993; 48:4054-4060. [PMID: 10008856 DOI: 10.1103/physrevb.48.4054] [Citation(s) in RCA: 55] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Yao ZQ, Yang WS, Chen BF, Shang P, Zhang WB, Chen Y. Purification and characterization of human hepatic stimulator substance. Chin Med J (Engl) 1993; 106:527-32. [PMID: 8243125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Human hepatic stimulator substance (hHSS) was purified from fetal liver with 6,000-fold decrease in protein content and 840-fold increase in specific growth stimulative activity. Purification procedures included the heating of a homogenate in 35% (W/V) Tris-HCL at 95 degrees C for 20 min, high and ultra speed centrifugation, passage over Sephadex G100 gel filtration, DEAE-cellulose ion exchange, TSK G3000 SWG high performance liquid chromatography (HPLC) and YWG C-18 reverse phase HPLC techniques. The most purified material (HP-HSS) revealed cell-specific and dose dependent increase in 3H-TdR incorporation into cellular DNA. As little as 38 ng of the HP-HSS per ml of culture medium produced a 2.5-fold increase in DNA synthesis. Further studies indicate that HP-HSS in combination with insulin and epidermal growth factor stimulate DNA synthesis 16-fold compared with serum and hormone free controls and nearly 3-fold over hepatoma growth with HP-HSS alone. Sodium dedecyl sulfate polyacrylamide gel electrophoresis with silver stain and ultrascan XL laser densitrometer quantitative scanning revealed only one band at 12,800.
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Affiliation(s)
- Z Q Yao
- Department of Infectious Diseases, Tangdu Hospital, Fourth Military Medical University, Xi'an
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Zhang YQ, Wang KQ, Cao DQ, Gao YA, Cai YQ, Shang P. Air bronchogram in differential diagnosis of small peripheral lung cancers on CT image. Chin Med J (Engl) 1993; 106:357-60. [PMID: 8404278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
The computed tomographic (CT) images of 52 patients of small peripheral lung nodule < 3 cm proved pathologically were reviewed. Air bronchogram (AB) was found in 14 nodules on thin-section CT images, in which well or moderately differentiated small adenocarcinomas were only seen with lipidic growth. Squamous-cell, large-cell carcinomas and small benign lung nodules had no AB sign both on CT image and in pathologic specimens.
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Affiliation(s)
- Y Q Zhang
- Department of Radiology, General Navy Hospital, Beijing
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