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| 1 | Isolation and characterisation of human gingival margin-derived STRO-1/MACS^+ and MACS^-cell populations显示文摘Recently,gingival margin-derived stem/progenitor cells isolated via STRO-1/magnetic activated cell sorting(MACS) showed remarkable periodontal regenerative potential in vivo.As a second-stage investigation,the present study's aim was to perform in vitro characterisation and comparison of the stem/progenitor cell characteristics of sorted STRO-1-positive(MACS^+) and STRO-1-negative(MACS^-) cell populations from the human free gingival margin.Cells were isolated from the free gingiva using a minimally invasive technique and were magnetically sorted using anti-STRO-1 antibodies.Subsequently,the MACS^+ and MACS^- cell fractions were characterized by flow cytometry for expression of CD14,CD34,CD45,CD73,CD90,CD105,CD146/MUC18 and STRO-1.Colony-forming unit(CFU) and multilineage differentiation potential were assayed for both cell fractions.Mineralisation marker expression was examined using real-time polymerase chain reaction(PCR).MACS^+ and MACS- cell fractions showed plastic adherence.MACS^+ cells,in contrast to MACS- cells,showed all of the predefined mesenchymal stem/progenitor cell characteristics and a significantly higher number of CFUs(P<0.01).More than 95%of MACS^+ cells expressed CD105,CD90 and CD73;lacked the haematopoietic markers CD45,CD34 and CD14,and expressed STRO-1 and CD146/MUC18.MACS- cells showed a different surface marker expression profile,with almost no expression of CD14 or STRO-1,and more than 95%of these cells expressed CD73,CD90 and CD146/MUC18,as well as the haematopoietic markers CD34 and CD45 and CD105.MACS^+ cells could be differentiated along osteoblastic,adipocytic and chondroblastic lineages.In contrast,MACS- cells demonstrated slight osteogenic potential.Unstimulated MACS^+ cells showed significantly higher expression of collagen I(P<0.05) and collagen III(P<0.01),whereas MACS^- cells demonstrated higher expression of osteonectin(P<0.05;MannWhitney).The present study is the first to compare gingival MACS^+ and MACS- cell populations demonstrating that MACS^+ cells,in contrast to MACS- cells,harbour stem/progenitor cell characteristics.This study also validates the effectiveness of the STRO-l/MACS^+technique for the isolation of gingival stem/progenitor cells.Human free gingival margin-derived STRO-1/MACS^+ cells are a unique renewable source of multipotent stem/progenitor cells. | Karim M Fawzy El-Sayed Sebastian Paris Christian Graetz Neemat Kassem Mohamed Mekhemar Hendrick Ungefroren Fred Fndrich Christof Drfer | 2015 | International Journal of Oral Science2015，7，2： | 6 |
| 2 | Transient micro-elastography:A novel non-invasive approach to measure liver stiffness in mice显示文摘AIM:To develop and validate a transient micro-elastography device to measure liver stiffness(LS) in mice.METHODS:A novel transient micro-elastography(TME) device,dedicated to LS measurements in mice with a range of measurement from 1-170 kPa,was developed using an optimized vibration frequency of 300 Hz and a 2 mm piston.The novel probe was validated in a classical fibrosis model(CCl4) and in a transgenic murine model of systemic amyloidosis.RESULTS:TME could be successfully performed in control mice below the xiphoid cartilage,with a mean LS of 4.4 ± 1.3 kPa,a mean success rate of 88%,and an excellent intra-observer agreement(0.98).Treatment with CCl4 over seven weeks drastically increased LS as compared to controls(18.2 ± 3.7 kPa vs 3.6 ± 1.2 kPa).Moreover,fibrosis stage was highly correlated with LS(Spearman coefficient = 0.88,P < 0.01).In the amyloidosis model,much higher LS values were obtained,reaching maximum values of > 150 kPa.LS significantly correlated with the amyloidosis index(0.93,P < 0.0001) and the plasma concentration of mutant hapoA-□(0.62,P < 0.005).CONCLUSION:Here,we have established the first non-invasive approach to measure LS in mice,and have successfully validated it in two murine models of high LS. | Cécile Bastard Matteo R Bosisio Michèle Chabert Athina D Kalopissis Meriem Mahrouf-Yorgov Hélène Gilgenkrantz Sebastian Mueller Laurent Sandrin | 2011 | World Journal of Gastroenterology2011，17，8： | 4 |
| 3 | Lack of correlation between Treg quantification assays in inflammatory bowel disease patients显示文摘AIM:To compare the number of regulatory T-cells( Tregs) measured by flow cytometry with those obtained using a real-time quantitative PCR(q PCR) method in patients suffering from inflammatory bowel disease(IBD).METHODS:Tregs percentages obtained by both flow cytometry and q PCR methods in 35 adult IBD patients,18 out of them with Crohn′s disease(CD)and 17 with ulcerative colitis(UC)were compared to each other as well as to scores on two IBD activity questionnaires using the Harvey Bradshaw Index(HBI)for CD patients and the Simple Colitis Clinical Activity Index(SCCAI)for UC patients.The Treg percentages by flow cytometry were defined as CD4+CD25highCD127lowFOXP3+cells in peripheral blood mononuclear cells,whereas the Treg percentages by q PCR method were determined as FOXP3 promoter demethylation in genomic DNA.RESULTS:We found an average of 1.56%±0.78%Tregs by using flow cytometry,compared to 1.07%±0.53%Tregs by using q PCR in adult IBD patients.There were no significant correlations between either the percentages of Tregs measured by flow cytometry or q PCR and the HBI or SCCAI questionnaire scores in CD or UC patients,respectively.In addition,there was no correlation between Treg percentages measured by q PCR and those measured by flow cytometry(r=-0.06,P=0.73;Spearman Rho).These data suggest that,either Treg-related immune function or the clinical scores in these IBD patients did not accurately reflect actual disease activity.Until the cause(s)for these differences are more clearly defined,the resultssuggest caution in interpreting studies of Tregs in various inflammatory disorders.CONCLUSION:The two methods did not produce equivalent measures of the percentage of total Tregs in the IBD patients studied which is consistent with the conclusion that Tregs subtypes are not equally detected by these two assays. | Gunnar Brandhorst Darinka Todorova Petrova Sebastian Weigand Christoph Eberle Nicolas von Ahsen Jessica Schmitz Frank Christian Schultze Dirk Raddatz Michael Karaus Michael Oellerich Philip D Walson | 2015 | World Journal of Gastroenterology2015，21，11： | 2 |
| 4 | Efficacy of SpyGlass^(TM)-directed biopsy compared to brush cytology in obtaining adequate tissue for diagnosis in patients with biliary strictures显示文摘AIM: To evaluate the diagnostic yield(inflammatory activity) and efficiency(size of the biopsy specimen) of SpyGlassTM-guided biopsy vs standard brush cytology in patients with and without primary sclerosing cholangitis(PSC).METHODS: At the University Medical Center Mainz, Germany, 35 consecutive patients with unclear biliarylesions(16 patients) or long-standing PSC(19 patients) were screened for the study. All patients underwent a physical examination, lab analyses, and abdominal ultrasound. Thirty-one patients with non-PSC strictures or with PSC were scheduled to undergo endoscopic retrograde cholangiography(ERC) and subsequent per-oral cholangioscopy(POC). Standard ERC was initially performed, and any lesions or strictures were localized. POC was performed later during the same session. The Boston Scientific SpyGlass SystemTM(Natick, MA, United States) was used for choledochoscopy. The biliary tree was visualized, and suspected lesions or strictures were biopsied, followed by brush cytology of the same area. The study endpoints(for both techniques) were the degree of inflammation, tissue specimen size, and the patient populations(PSC vs non-PSC). Inflammatory changes were divided into three categories: none, low activity, and high activity. The specimen quantity was rated as low, moderate, or sufficient.RESULTS: SpyGlassTM imaging and brush cytology with material retrieval were performed in 29 of 31(93.5%) patients(23 of the 29 patients were male). The median patient age was 45 years(min, 20 years; max, 76 years). Nineteen patients had known PSC, and 10 showed non-PSC strictures. No procedure-related complications were encountered. However, for both methods, tissues could only be retrieved from 29 pa-tients. In cases of inflammation of the biliary tract, the diagnostic yield of the SpyGlassTM-directed biopsies was greater than that using brush cytology. More tissue material was obtained for the biopsy method than for the brush cytology method(P = 0.021). The biopsies showed significantly more inflammatory characteristics and greater inflammatory activity compared to the cy-tological investigation(P = 0.014). The greater quantity of tissue samples proved useful for both PSC and non-PSC patients.CONCLUSION: SpyGlassTM imaging can be recom-mended for proper inflammatory diagnosis in PSC pa-tients. However, its value in diagnosing dysplasia wasnot addressed in this study and requires further investi-gation. | Johannes Wilhelm Rey Torsten Hansen Sebastian Dümcke Achim Tresch Katja Kramer Peter Robert Galle Martin Goetz Marcus Schuchmann Ralf Kiesslich Arthur Hoffman | 2014 | World Journal of Gastrointestinal Endoscopy2014，6，4： | 2 |
| 5 | 知证卫生决策工具之十一--查找和使用当地证据显示文摘当地证据是指来源于卫生政策或卫生项目所涉及的特定环境的证据。需要这类证据与其它形式的证据共同支持方案决择。全球证据是判断政策效果及其影响因素和深入了解问题解决办法的最佳出发点。而当地证据大多数是在判断应采纳哪些决定及采取哪些措施时使用。本文提出以下5个问题供政策制定者在识别和评价当地证据进行知证决策时参考:①知证决策需要什么样的当地证据?②如何获得必需的当地证据?③如何评价现有当地证据的质量?④当地证据的可获得性、质量或结果是否有重要变化?⑤如何整合当地证据与其他信息? | Simon Lewin Andrew D Oxman John N Lavis Atle Fretheim Sebastian Garcia Marti Susan Munabi-Babigumira 李幼平 王莉 成岚 蒋兰慧 蔡羽嘉 | 2010 | 中国循证医学杂志2010，10，4： | 2 |
| 6 | A prospective feasibility study of sub-millisievert abdominopelvic CT using iterative reconstruction in Crohn’s disease显示文摘 | Siobhan B O’Neill Patrick D Mc Laughlin Lee Crush Owen J O’Connor Sebastian R Mc Williams Orla Craig Anne Marie Mc Garrigle Fiona O’Neill Jackie Bye Max F. Ryan Fergus Shanahan Michael M Maher | 2013 | European Radiology2013，，： | 2 |
| 7 | Excluding infection through procalcitonin testing improves outcomes of congestive heart failure patients presenting with acute respiratory symptoms: Results from the randomized ProHOSP trial显示文摘 | Philipp Schuetz Alexander Kutz Eva Grolimund Sebastian Haubitz Désirée Demann Alaadin V?geli Fabienne Hitz Mirjam Christ-Crain Robert Thomann Claudine Falconnier Claus Hoess Christoph Henzen Robert J. Marlowe Werner Zimmerli Beat Mueller | 2014 | International Journal of Cardiology2014，，3： | 2 |
| 8 | Biochemical and molecular characterization of a mutation that confers a decreased raffinosaccharide and phytic acid phenotype on soybean seeds 显示文摘 | Hize W D Carlson T J Kerr P S Sebastian S A | 2002 | Plant Physiology2002，128，： | 1 |
| 9 | Mitofusin 2 (Mfn2) links mitochondrial and endoplasmic reticulum function with insulin signaling and is essential for normal glucose homeostasis显示文摘 | Sebastian D Hernandez-Alvarez M Segales J | | 0，，： | 1 |
| 10 | A W-band MMIC radar system for remote detection of vital signs 显示文摘 | Sebastian D Serdal A Steffen S | 2012 | Journal of In- flared Millimeter and Terahertz Waves2012，33，12： | 1 |
| 11 | Molecular and phenotypic characterization of Als1 and Als2 mutations conferring tolerance to acetolactate synthase herbicides in soybean显示文摘 | Kay L Walter Stephen D Strachan Nancy M Ferry Henrik H Albert Linda A Castle Scott A Sebastian | 2014 | Pest. Manag. Sci2014，，12： | 1 |
| 12 | Parametric study of bond failure in concrete beams externally strengthened with fiber reinforced polymer plates 显示文摘 | D Kim and W M Sebastian | 2002 | Magazine of Concrete Research2002，54，1： | 1 |
| 13 | Algorithms for Non-negative Matrix Factorization显示文摘 | Lee D D Sebastian S H | 2001 | Advances in Neural Information Processing Systems2001，2001，13： | 1 |
| 14 | The manifold ways of pereeption显示文摘 | Seung H Sebastian D Lee D | 2000 | Science2000，29，5500： | 1 |
| 15 | Image quality and reconstruction intervals of dual-source CT coronary angiography:recommendations for ECG2pulsing windowing显示文摘 | Sebastian L Hans S Lotus D | 2007 | Invest Radiol2007，42，8： | 1 |
| 16 | Mitochondrial oxidative stress,mitochondrial DNA damage and their role in age-related vascular dysfunction显示文摘 | Yuliya M Andreas D Sebastian S | 2015 | Int J Mol Sci2015，16，15： | 1 |
| 17 | Is radical bowel cancer resection under local anaesthesia and sedation feasible?显示文摘 | Sebastian J Sran H Marzouk D | 2015 | Indian J Surg2015，77，4： | 1 |
| 18 | A note on the search for k elements via quantum walk显示文摘 | Sebastian Drn Thomas Thierauf | 2010 | Information Processing Letters2010，110，97： | 1 |
| 19 | Assessing relative risks of infection and rejection: a meta analysis using an immune function assay显示文摘 | Kowalski R J Post D R Mannon R B Sebastian A Wright H I Sigle G | 2006 | Transplantation2006，82，： | 1 |
| 20 | 5'-AMP- activated protein kinase activity and protein expression are regulated by endurance training in human skeletal muscle显示文摘 | CHRISTIAN FROSIG SEBASTIAN B JORGENSEN D GRAHAME HARDIE | 2004 | Am J Physiol Endocrinol Metab2004，286，3： | 1 |
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