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Lan W, Yu X, Li M, Lei R, Qin Z, Fu B. A concise approach to 2-pyrrolin-5-one scaffold construction from α-halohydroxamates and β-keto compounds. Org Biomol Chem 2023; 21:7535-7540. [PMID: 37674436 DOI: 10.1039/d3ob01140b] [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: 09/08/2023]
Abstract
A concise approach to the construction of the 2-pyrrolin-5-one scaffold was developed via a one-pot reaction with formal [3 + 2] annulation/elimination between β-keto nitrile/β-keto ester and unsubstituted α-halohydroxamates. This reaction features mild conditions, easy handling, broad substrate scope and good yields. Remarkably, the products could be readily converted into potentially bioactive alkylidenepyrrolinones, pyrroles, pyran-fused pyrrole heterocycles and other useful compounds, exhibiting versatile synthetic potential.
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Affiliation(s)
- Wenjie Lan
- Department of Chemistry, China Agricultural University, Beijing 100193, China.
| | - Xuan Yu
- Department of Chemistry, China Agricultural University, Beijing 100193, China.
| | - Mengzhu Li
- Department of Chemistry, China Agricultural University, Beijing 100193, China.
| | - Rongchao Lei
- Department of Chemistry, China Agricultural University, Beijing 100193, China.
| | - Zhaohai Qin
- Department of Chemistry, China Agricultural University, Beijing 100193, China.
| | - Bin Fu
- Department of Chemistry, China Agricultural University, Beijing 100193, China.
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Fan P, Lei R, Wang Y, Zhang M, Guo C, Fan L, Wang J. WCN23-0135 IMG-025, EXHIBITS PROMISING POTENTIAL IN AMELIORATING IMMUNOGLOBULIN A NEPHROPATHY VIA INHIBITION OF LECTIN-MEDIATED COMPLEMENT ACTIVATION. Kidney Int Rep 2023. [DOI: 10.1016/j.ekir.2023.02.467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2023] Open
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Xu YX, Wang Y, Sun M, Bao XY, Lei R, Li HE, Li XT. [Comparative analysis of the clinical application of two femtosecond laser-assisted cataract operation platforms]. Zhonghua Yan Ke Za Zhi 2020; 56:530-535. [PMID: 32842336 DOI: 10.3760/cma.j.cn112142-20191113-00571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the operability and clinical application effects of femtosecond laser-assisted cataract surgery systems of LenSx and LenSAR. Methods: This was a randomized controlled study. A total of 86 patients (90 eyes) who underwent femtosecond laser-assisted cataract surgery in Wuhan Aier Eye Hospital from April 2018 to November 2018 were enrolled and divided into two groups randomly, including 44 patients (45 eyes) in the LenSx group and 42 patients (45 eyes) in the LenSAR group. During the operation, the following observation indexes were obtained. Operational indicators included the number of docking attempts, anterior capsulotomy time, nucleus pre-treatment time, total femtosecond laser emission time, and total vacuum suction duration. Clinical outcome indicators included changes in the patient's intraocular pressure during femtosecond laser surgery, the rate of subconjunctival hemorrhage, capsulotomy integrity (yes/no), roundness and centricity of the anterior capsule opening (yes/no), the rate of anterior capsule opening tear, and the rate of posterior capsule rupture. The t-test, rank-sum test or chi-square test were used for statistical analysis. Results: There were no significant differences between groups in the age and the lens density (both P>0.05). The number of docking attempts in the LenSx group was 1 (1 to 4) and in the LenSAR group was 1 (1 to 2); there was statistically significant difference (Z =-2.23, P<0.05). The difference in the anterior capsulotomy time between the two groups was statistically significant [13.00 (10.00 to 22.00) s compared with 3.00 (1.00 to 3.00) s, Z=-8.71, P<0.05]. The femtosecond laser pre-nucleation time and total femtosecond laser emission time of the LenSx group were (16.67±3.36) s and (30.49±3.53) s, and those of the LenSAR group were (12.38±4.36) s and (15.36±4.29) s, respectively; the differences between the two groups were statistically significant (t=-5.23, -18.26; both P<0.05). The total vacuum suction duration in the LenSx group was (97.23±19.96) s, shorter than that in the LenSAR group [(123.76±16.81) s] (t=6.82, P<0.05). The intraocular pressure after femtosecond laser surgery in both groups was higher than that before surgery. The increase of intraocular pressure in the LenSAR group was (5.64±5.42) mmHg (1 mmHg=0.133 kPa), higher than that in the LenSx group [(2.99±4.66) mmHg] (t=-2.49, P<0.05). The rate of subconjunctival hemorrhage in the LenSx group was 33.3% (15/45), while it was 8.9% (4/45) in the LenSAR group; the difference between the two groups was statistically significant (χ²=6.67, P<0.05). There were no significant differences between groups in capsulotomy integrity, roundness and centricity of the anterior capsule opening, the rate of anterior capsule opening tear, and the rate of posterior capsule rupture (all P>0.05). Conclusion: The docking process of the LenSAR system is convenient, and there is less subconjunctival hemorrhage; the total vacuum suction duration of LenSx is short, and the increase of intraocular pressure is low. (Chin J Ophthalmol, 2020, 56: 530-535).
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Affiliation(s)
- Y X Xu
- Aier School of Ophthalmology, Central South University, Wuhan Aier Eye Hospital, Wuhan 430061, China
| | - Y Wang
- Wuhan Aier Eye Hospital, Wuhan 430061, China
| | - M Sun
- Wuhan Aier Eye Hospital, Wuhan 430061, China
| | - X Y Bao
- Wuhan Aier Eye Hospital, Wuhan 430061, China
| | - R Lei
- Wuhan Aier Eye Hospital, Wuhan 430061, China
| | - H E Li
- Aier School of Ophthalmology, Central South University, Wuhan Aier Eye Hospital, Wuhan 430061, China
| | - X T Li
- Aier School of Ophthalmology, Central South University, Wuhan Aier Eye Hospital, Wuhan 430061, China
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Nensi A, Simpson A, Kives SL, Lei R, D'Souza J, Robertson D. 1187 Utilizing Lean Methodology to Optimize Operating Room Efficiency: A Multidisciplinary Process-Mapping Exercise. J Minim Invasive Gynecol 2019. [DOI: 10.1016/j.jmig.2019.09.259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Lei R, Hou J, Sun Y, Fang X. Mechanism of the antibacterial function of α-human-defensin-myr as a novel nanobiotic in sepsis. Br J Anaesth 2019. [DOI: 10.1016/j.bja.2018.10.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Silberzahn R, Uhlmann EL, Martin DP, Anselmi P, Aust F, Awtrey E, Bahník Š, Bai F, Bannard C, Bonnier E, Carlsson R, Cheung F, Christensen G, Clay R, Craig MA, Dalla Rosa A, Dam L, Evans MH, Flores Cervantes I, Fong N, Gamez-Djokic M, Glenz A, Gordon-McKeon S, Heaton TJ, Hederos K, Heene M, Hofelich Mohr AJ, Högden F, Hui K, Johannesson M, Kalodimos J, Kaszubowski E, Kennedy DM, Lei R, Lindsay TA, Liverani S, Madan CR, Molden D, Molleman E, Morey RD, Mulder LB, Nijstad BR, Pope NG, Pope B, Prenoveau JM, Rink F, Robusto E, Roderique H, Sandberg A, Schlüter E, Schönbrodt FD, Sherman MF, Sommer SA, Sotak K, Spain S, Spörlein C, Stafford T, Stefanutti L, Tauber S, Ullrich J, Vianello M, Wagenmakers EJ, Witkowiak M, Yoon S, Nosek BA. Many Analysts, One Data Set: Making Transparent How Variations in Analytic Choices Affect Results. Advances in Methods and Practices in Psychological Science 2018. [DOI: 10.1177/2515245917747646] [Citation(s) in RCA: 267] [Impact Index Per Article: 44.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Twenty-nine teams involving 61 analysts used the same data set to address the same research question: whether soccer referees are more likely to give red cards to dark-skin-toned players than to light-skin-toned players. Analytic approaches varied widely across the teams, and the estimated effect sizes ranged from 0.89 to 2.93 ( Mdn = 1.31) in odds-ratio units. Twenty teams (69%) found a statistically significant positive effect, and 9 teams (31%) did not observe a significant relationship. Overall, the 29 different analyses used 21 unique combinations of covariates. Neither analysts’ prior beliefs about the effect of interest nor their level of expertise readily explained the variation in the outcomes of the analyses. Peer ratings of the quality of the analyses also did not account for the variability. These findings suggest that significant variation in the results of analyses of complex data may be difficult to avoid, even by experts with honest intentions. Crowdsourcing data analysis, a strategy in which numerous research teams are recruited to simultaneously investigate the same research question, makes transparent how defensible, yet subjective, analytic choices influence research results.
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Affiliation(s)
- R. Silberzahn
- Organisational Behaviour, University of Sussex Business School
| | | | - D. P. Martin
- Department of Psychology, University of Virginia
| | - P. Anselmi
- Department of Philosophy, Sociology, Education and Applied Psychology, University of Padua
| | - F. Aust
- Department of Psychology, University of Cologne
| | - E. Awtrey
- Department of Management, University of Cincinnati
| | - Š. Bahník
- Department of Management, Faculty of Business Administration, University of Economics, Prague
| | - F. Bai
- Department of Management and Marketing, Hong Kong Polytechnic University
| | - C. Bannard
- Department of Psychology, University of Liverpool
| | - E. Bonnier
- Department of Economics, Stockholm School of Economics
| | - R. Carlsson
- Department of Psychology, Linnaeus University
| | - F. Cheung
- School of Public Health, University of Hong Kong
| | - G. Christensen
- Berkeley Institute for Data Science, University of California, Berkeley
| | - R. Clay
- Department of Psychology, College of Staten Island, City University of New York
| | - M. A. Craig
- Department of Psychology, New York University
| | - A. Dalla Rosa
- Department of Philosophy, Sociology, Education and Applied Psychology, University of Padua
| | - L. Dam
- Faculty of Economics and Business, University of Groningen
| | - M. H. Evans
- Division of Neuroscience and Experimental Psychology, University of Manchester
| | | | - N. Fong
- Department of Marketing and Supply Chain Management, Temple University
| | - M. Gamez-Djokic
- Department of Management and Organizations, Kellogg School of Management, Northwestern University
| | - A. Glenz
- Department of Psychology, University of Zurich
| | | | - T. J. Heaton
- School of Mathematics and Statistics, University of Sheffield
| | - K. Hederos
- Swedish Institute for Social Research (SOFI), Stockholm University
| | - M. Heene
- Department of Psychology, Ludwig-Maximilians-Universität München
| | | | - F. Högden
- Department of Psychology, University of Cologne
| | - K. Hui
- School of Management, Xiamen University
| | | | | | - E. Kaszubowski
- Department of Psychology, Federal University of Santa Catarina
| | - D. M. Kennedy
- School of Business, University of Washington Bothell
| | - R. Lei
- Department of Psychology, New York University
| | | | - S. Liverani
- School of Mathematical Sciences, Queen Mary University of London
| | - C. R. Madan
- School of Psychology, University of Nottingham
| | - D. Molden
- Department of Psychology, Northwestern University
| | - E. Molleman
- Faculty of Economics and Business, University of Groningen
| | | | - L. B. Mulder
- Faculty of Economics and Business, University of Groningen
| | - B. R. Nijstad
- Faculty of Economics and Business, University of Groningen
| | - N. G. Pope
- Department of Economics, University of Maryland
| | - B. Pope
- Department of Economics, Brigham Young University
| | | | - F. Rink
- Faculty of Economics and Business, University of Groningen
| | - E. Robusto
- Department of Philosophy, Sociology, Education and Applied Psychology, University of Padua
| | - H. Roderique
- Rotman School of Management, University of Toronto
| | - A. Sandberg
- Swedish Institute for Social Research (SOFI), Stockholm University
| | - E. Schlüter
- Department of Social Sciences and Cultural Studies, Institute of Sociology, Justus Liebig University, Giessen
| | - F. D. Schönbrodt
- Department of Psychology, Ludwig-Maximilians-Universität München
| | - M. F. Sherman
- Department of Psychology, Loyola University Maryland
| | | | - K. Sotak
- Department of Marketing and Management, SUNY Oswego
| | - S. Spain
- John Molson School of Business, Concordia University
| | - C. Spörlein
- Lehrstuhl für Soziologie, insb. Sozialstrukturanalyse, Otto-Friedrich-Universität Bamberg
| | - T. Stafford
- Department of Psychology, University of Sheffield
| | - L. Stefanutti
- Department of Philosophy, Sociology, Education and Applied Psychology, University of Padua
| | - S. Tauber
- Faculty of Economics and Business, University of Groningen
| | - J. Ullrich
- Department of Psychology, University of Zurich
| | - M. Vianello
- Department of Philosophy, Sociology, Education and Applied Psychology, University of Padua
| | | | | | - S. Yoon
- Department of Marketing and Supply Chain Management, Temple University
| | - B. A. Nosek
- Department of Psychology, University of Virginia
- Center for Open Science, Charlottesville, Virginia
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Li G, Li M, Hu J, Lei R, Xiong H, Ji H, Yin H, Wei Q, Hu G. The microRNA-182-PDK4 axis regulates lung tumorigenesis by modulating pyruvate dehydrogenase and lipogenesis. Oncogene 2016; 36:989-998. [PMID: 27641336 DOI: 10.1038/onc.2016.265] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Revised: 05/17/2016] [Accepted: 06/17/2016] [Indexed: 02/08/2023]
Abstract
Reprogrammed metabolism is one of the hallmarks of cancer. The dysregulation of glycolysis in cancer has been heavily studied. However, it remains largely unclear how other metabolic processes are regulated in cancer cells. Here we show that microRNA-182 (miR-182) suppresses pyruvate dehydrogenase (PDH) kinase 4 (PDK4) and promotes lung tumorigenesis. miR-182 is dysregulated and inversely correlated with PDK4 in human lung adenocarcinomas. The miR-182-PDK4 axis regulates lung cancer cell growth by modulating the activity of PDH, the gatekeeping enzyme of pyruvate flux into acetyl-CoA, and subsequently de novo lipogenesis of cancer cells. Suppression of lipogenesis by silencing ATP citrate lyase (ACLY) and fatty acid synthase (FASN) or by chemical inhibitors diminishes the effects of miR-182-PDK4 in tumor growth. Alteration of de novo lipogenesis also affects reactive oxygen species (ROS) production and the downstream JNK signaling pathway. Hence, our work suggests that the miR-182-PDK4 axis is a crucial regulator of cancer cell metabolism and a potential target for antitumor therapy.
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Affiliation(s)
- G Li
- The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & Shanghai Jiao Tong University School of Medicine; University of Chinese Academy of Sciences, Shanghai, China
| | - M Li
- The Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - J Hu
- The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & Shanghai Jiao Tong University School of Medicine; University of Chinese Academy of Sciences, Shanghai, China
| | - R Lei
- The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & Shanghai Jiao Tong University School of Medicine; University of Chinese Academy of Sciences, Shanghai, China
| | - H Xiong
- Department of Oncology, Tongji Hospital, Huazhong University of Science and Technology, Wuhan, China
| | - H Ji
- The State Key Laboratory of Cell Biology, Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - H Yin
- The Key Laboratory of Food Safety Research, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
| | - Q Wei
- Department of Pathology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - G Hu
- The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & Shanghai Jiao Tong University School of Medicine; University of Chinese Academy of Sciences, Shanghai, China
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Andrews J, Dare P, Estcourt G, Gapes D, Lei R, McDonald B, Wijaya N. Acetic acid recovery from a hybrid biological-hydrothermal treatment process of sewage sludge - a pilot plant study. Water Sci Technol 2015; 71:734-739. [PMID: 25768220 DOI: 10.2166/wst.2015.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A two-stage process consisting of anaerobic fermentation followed by sub-critical wet oxidation was used to generate acetic acid from sewage sludge at pilot scale. Volatile fatty acids, dominated by propionic acid, were produced over 4-6 days in the 2,000 L fermentation reactor, which also achieved 31% solids reduction. Approximately 96% of the carbon was retained in solution over the fermentation stage. Using a 200 L wet oxidation reactor operating in batch mode, the second stage achieved 98% volatile suspended solids (VSS) destruction and 67% total chemical oxygen demand (tCOD) destruction. Acetic acid produced in this stage was recalcitrant to further degradation and was retained in solution. The gross yield from VSS was 16% for acetic acid and 21% for volatile fatty acids across the process, higher than reported yields for wet oxidation alone. The pilot plant results showed that 72% of the incoming phosphorus was retained in the solids, 94% of the nitrogen became concentrated in solution and 41% of the carbon was converted to a soluble state, in a more degradable form. Acetic acid produced from the process has the potential to be used to offset ethanol requirements in biological nutrient removal plants.
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Affiliation(s)
- J Andrews
- Sustainable Design, Scion, Private Bag 3020, Rotorua 3046, New Zealand E-mail:
| | - P Dare
- Sustainable Design, Scion, Private Bag 3020, Rotorua 3046, New Zealand E-mail:
| | - G Estcourt
- Sustainable Design, Scion, Private Bag 3020, Rotorua 3046, New Zealand E-mail:
| | - D Gapes
- Sustainable Design, Scion, Private Bag 3020, Rotorua 3046, New Zealand E-mail:
| | - R Lei
- Sustainable Design, Scion, Private Bag 3020, Rotorua 3046, New Zealand E-mail:
| | - B McDonald
- Sustainable Design, Scion, Private Bag 3020, Rotorua 3046, New Zealand E-mail:
| | - N Wijaya
- Sustainable Design, Scion, Private Bag 3020, Rotorua 3046, New Zealand E-mail:
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Delmore KE, Brenneman RA, Lei R, Bailey CA, Brelsford A, Louis EE, Johnson SE. Clinal variation in a brown lemur (Eulemur
spp.) hybrid zone: Combining morphological, genetic and climatic data to examine stability. J Evol Biol 2013; 26:1677-90. [DOI: 10.1111/jeb.12178] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Revised: 02/15/2013] [Accepted: 03/26/2013] [Indexed: 11/27/2022]
Affiliation(s)
- K. E. Delmore
- Department of Anthropology; University of Calgary; Calgary AB Canada
| | - R. A. Brenneman
- Center for Conservation and Research; Omaha's Henry Doorly Zoo; Omaha NE USA
| | - R. Lei
- Center for Conservation and Research; Omaha's Henry Doorly Zoo; Omaha NE USA
| | - C. A. Bailey
- Center for Conservation and Research; Omaha's Henry Doorly Zoo; Omaha NE USA
| | - A. Brelsford
- Department of Ecology and Evolution; University of Lausanne; Lausanne Switzerland
| | - E. E. Louis
- Center for Conservation and Research; Omaha's Henry Doorly Zoo; Omaha NE USA
| | - S. E. Johnson
- Department of Anthropology; University of Calgary; Calgary AB Canada
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Lei R, Brenneman RA, Schmitt DL, Louis EE. Detection of Cytonuclear Genomic Dissociation in the North American Captive African Elephant Collection. J Hered 2009; 100:675-80. [DOI: 10.1093/jhered/esp069] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [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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Chu X, Dong C, Lei R, Sun L, Wang Z, Dong Y, Shen M, Wang Y, Wang B, Zhang K, Yang L, Li Y, Yuan W, Wang Y, Song H, Jin L, Xiong M, Huang W. Polymorphisms in the interleukin 3 gene show strong association with susceptibility to Graves' disease in Chinese population. Genes Immun 2009; 10:260-6. [PMID: 19262575 DOI: 10.1038/gene.2009.3] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Graves' disease (GD) is a common organ-specific autoimmune disorder, which is multifactorial and develops in genetically susceptible individuals. We had earlier mapped a susceptibility locus for GD to chromosome 5q31-33 in a linkage study. Here we used tag single-nucleotide polymorphisms (SNPs) to search for genetic variants associated with GD, and examined 19 functional candidate genes in this chromosomal region. We identified 192 polymorphisms by re-sequencing the candidate genes, and selected 51 tagSNPs to genotype in a case-control collection of 1118 south Han Chinese subjects (428 cases and 690 controls). Initial analysis suggested that a non-synonymous SNP rs40401 (P27S) of interleukin 3 (IL3) was associated with GD, and further fine-mapping showed that rs40401, or its perfect proxy SNP rs31480 in the 5' flanking region of IL3, fully accounted for the association signal at this locus. We replicated significant association of rs40401 with GD in an independent sample collection of 839 north Han Chinese subjects. A combined analysis revealed strong validation of this association (odds ratio (OR(common))=1.63, combined P (P(comb))=4 x 10(-6) in the Recessive disease model). This study provides convincing evidence that the IL3 gene is a susceptibility locus for GD in the Chinese population.
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Affiliation(s)
- X Chu
- Ruijin Hospital, School of Medicine, Shanghai Jiaotong University, Shanghai, China
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14
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Lei R, Wang H, Zuo YM. [Synthesis and evaluation of ethylstyrene-divinylbenzene-coated titania for high performance liquid chromatography]. Se Pu 2001; 19:516-9. [PMID: 12545462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023] Open
Abstract
Ethylstyrene-divinylbenzene-coated TiO2 (ES-DVB-TiO2) was synthesized by at first bonding of vinyltriethoxysilane with hydroxyl group on titania and secondly by addition polymerization of vinyltriethoxysilane and ethylstyrene-divinylbenzene. The hydrophobic selectivity, absolute mobile phase sensitivity, and stability of the stationary phase were evaluated. Finally, several kinds of practical separations were tested on ES-DVB-TiO2. These examples showed that ES-DVB-TiO2 synthesized in our laboratory was a good reversed-phase stationary phase.
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Affiliation(s)
- R Lei
- Department of Chemistry, Nankai University, Tianjin 300071, China
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Shuai J, Zhang S, Han T, Jiang Y, Lei R, Chen S. [Correlation between gene expression of CCK-A receptor and gallbladder emptying in gallstone patients]. Zhonghua Wai Ke Za Zhi 1999; 37:292-4. [PMID: 11829843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
OBJECTIVE To investigate the expression of CCK-A receptor and its relation with gallbladder hypomotility in patients with gallstone. METHODS 20 patients with gallstone and 10 normal subjects were studied and gallbladder emptying function was measured by B ultrasonography. The other 8 patients without gallstone who died of accident were selected as controls for measuring mRNA expression of CCK-A receptor of gallbladder; RT-PCR was used to explore gene expression of CCK-A receptor of gallbladder. RESULTS The gallbladder motility was significantly impaired in gallstone patients. The patients had lower mRNA expression of CCK-A receptor than control subjects (0.633 +/- 0.167 vs. 0.944 +/- 0.230, P < 0.01), and so did patients with impaired gallbladder motility then those with normal motility (0.544 +/- 0.124 vs. 0.768 +/- 0.131, P < 0.05). Furthermore, the change of expression of CCK-A receptors was markedly correlated with gallbladder emptying (r = 0.925, P < 0.01). CONCLUSIONS mRNA expression of CCK-A receptor in gallstone patients decreases, which was related to gallbladder hypomotility. The down-regulation of gene expression of CCK-A receptor plays an important role in gallbladder hypomotility in patients with gallstone.
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Affiliation(s)
- J Shuai
- Department of Surgery, Ruijing Hospital, Shanghai Second Medical University, Shanghai 200025
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Chen Z, Wang B, Xu H, Wang H, Gu L, Lei R, Wu Z, Zeng X, Huo J, Li F. [Spiral shaped bacteria in the human gastric biopsy]. Hua Xi Yi Ke Da Xue Xue Bao 1993; 24:392-4. [PMID: 8150439] [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: 01/29/2023]
Abstract
Biopsy specimens from the gastric mucosa of 149 patients who underwent gastroduodenal endoscopy for upper gastrointestinal complaints were studied by light microscopy and culture. Spiral shaped bacteria were detected in four of the specimens by smears with Gram stain. The positive rate was 2.68%, but these bacteria and HP did not grow in culture. The characteristic helical morphology of the bacteria appears to be similar to that of the bacteria found in the stomach of cats and dogs. And what of significance in these cases is the presence of spiral shaped bacteria in association with chronic gastritis.
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