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| 1 | 肿瘤恶性转化与C/EBPβ和STAT3基因相关(英文)显示文摘The inference of transcriptional networks that regulate transitions into physiological or pathological cellular states remains a central challenge in systems biology. A mesenchymal phenotype is the hallmark of tumour aggressiveness in human malignant glioma,but the regulatory programs responsible for implementing the associated molecular signature are largely unknown. Here we show that reverse-engineering and an unbiased interrogation of a glioma-specific regulatory network reveal the transcriptional module that activates expression of mesenchymal genes in malignant glioma. Two transcription factors (C/EBPβ and STAT3) emerge as synergistic initiators and master regulators of mesenchymal transformation. Ectopic co-expression of C/EBPβ and STAT3 reprograms neural stem cells along the aberrant mesenchymal lineage,whereas elimination of the two factors in glioma cells leads to collapse of the mesenchymal signature and reduces tumour aggressiveness. In human glioma,expression of C/EBPβ and STAT3 correlates with mesenchymal differentiation and predicts poor clinical outcome. These results show that the activation of a small regulatory module is necessary and sufficient to initiate and maintain an aberrant phenotypic state in cancer cells. | Maria Stella Carro Wei Keat Lim Mariano Javier Alvarez Robert J. Bollo Evan Y. Snyder Erik P. Sulman Sandrine L. Anne Fiona Doetsch Howard Colman Anna Lasorella Ken Aldape Andrea Califano Antonio Iavarone | 2010 | 中华神经外科疾病研究杂志2010,9,1: | 16 |
| 2 | Segmental duodenectomy for gastrointestinal stromal tumor of the duodenum显示文摘AIM: To evaluate the results of segmental duodenectomy (SD) and pancreaticoduodenectomy (PD) for duodenal gastrointestinal stromal tumor (GIST) and help clinicians with surgical management. METHODS: All patients who underwent surgery for non-metastatic GIST of the duodenum in a single institution since 2000 were prospectively followed up. Seven patients (median age 51 years, range: 41-73 years) were enrolled: five underwent SD and two underwent PD. RESULTS: All the patients had a complete resection (R0), with no postoperative morbidity and mortality. Among the SD group, GIST was classified as low risk in two patients, intermediate risk in two, and high risk in one, according to the Fletcher scale, (vs two high risk patients in the PD group). With a median followup of 41 (18-85) mo, disease-free survival (DFS) rateswere 100% after SD and 0% after PD (P < 0.05). The median DFS was 13 mo in the PD group. CONCLUSION: Whenever associated with clear surgical margins, SD is a reliable and curative option for most duodenal GISTs, and is compatible with longterm DFS. | Nicolas Christian Buchs Pascal Bucher Pascal Gervaz Sandrine Ostermann Franois Pugin Philippe Morel | 2010 | World Journal of Gastroenterology2010,16,22: | 13 |
| 3 | Diverse Transcriptional Programs Associated with Environmental Stress and Hormones in the Arabidopsis Receptor-Like Kinase Gene Family显示文摘Arabidopsis thaliana 的染色体编码超过 600 像受体的 kinase (RLK ) 基因,迄今为止,受体的主导的班在陆地工厂发现了。尽管类似于哺乳动物的受体酷氨酸 kinases,植物 RLK 是 serine/threonine kinases 代表表明对植物并且,因而唯一的革新的一篇小说理解细胞外的发信号怎么演变的一个优秀机会和在与动物对比的植物的功能。RLK 被预言是允许植物对环境、发展的条件作出回应的发信号的小径的主要部件。然而,在识别这些过程的突破被限制了到仅仅单个 RLK 的一把。这里,我们使用了一个 Syngenta 特定的 Arabidopsis GeneChip 数组在暴露以后编 604 像受体的 kinase 基因的 transcriptional 活动的详细侧面到在植物表明因素知道的一张剖面图,包括不能生活的压力,关於生命的压力,和荷尔蒙。在包括学习的 68 个实验,我们发现 604 RLK 基因中的 582 个在表示显示了一个双重或更大的变化到处理的 12 种类型中的至少一个,从而为单个 RLK 基因的指向的功能的屏幕提供试验性的证据的大身体。我们调查了 RLK 基因的特别亚科是否对信号的特定的类型应答并且发现每个亚科显示了表达式的宽广范围,与向特别信号类被指向对比。最后由在 RLK 亚科之中分析顺序和基因表示的分叉,我们至于 RLK 的扩大的功能的基础的现在的证据并且这扩大怎么可能在他们的功能影响了保存和分叉。总体上拿,我们的学习代表 RLK 基因家庭的成员可以涉及的过程和相互作用的一个初步的、工作模型,在如此的信息留下了的地方为那么多 of 逃犯它的成员。 | Lee Chae Sylvia Sudat Sandrine Dudoit Tong Zhu Sheng Luan | 2009 | Molecular Plant2009,2,1: | 11 |
| 4 | 源于近端股骨间充质干细胞免疫抑制作用的研究显示文摘目的探讨源于成人近端股骨的间充质干细胞(MSC)是否具有免疫抑制功能,为临床移植物抗宿主病的防治寻找理想的细胞储备库。方法从全髋关节置换术患者的近端股骨中分离并培养MSC,将不同数量的细胞直接或以Transwell法加入混合淋巴细胞反应(MLR)中,检测MSC对外周血淋巴细胞(PBL)增殖水平的影响。以ELISA法及抗体中和法探讨细胞因子TGFβ1在MSC免疫调节中的作用。结果3×103、1×104、3×104、1×105个源于近端股骨的MSC对PBL增殖的抑制率分别为62%±18%、38%±4%、31%±16%、28%±12%,与采自髂骨骨髓穿刺物MSC的抑制作用相比差异无统计学意义(均P>0.05),后者对PBL的增殖抑制率为58%±12%、37%±8%、28%±6%、27%±6%;以0.2μm的微孔膜对MSC与MLR进行分隔,3×104及1×104个MSC对PBL的增殖抑制率为36%±8%和53%±12%;在ELISA实验中,MSC单独培养,MSC与MLR直接接触,或经Transwell共培养的这3种上清中转化生长因子(TGF)β1的表达水平差异无统计学意义,加入浓度递增的TGFβ1抗体不能逆转MSC对PBL增殖的抑制作用。结论源于近端股骨的MSC具有一定的免疫抑制功能,除TGFβ1外其他可溶性因子可能介导这一作用。 | 张翼鷟 Loic Fouillard Alain Chapel Morad Bensidhoum Christelle Mazurier Aish Nasef Sandrine Bouchet Manuel Lopez Dominique Thierry Norbert Cclaucle Gorin 达万明 | 2005 | 中华医学杂志2005,85,39: | 11 |
| 5 | Evaluation of renal function in patients with cirrhosis:Where are we now?显示文摘In the clinical context of the patients with liver cirrhosis,accurate evaluation of the renal function is potentially crucial.Indeed,it can lead to early diagnosis of both acute kidney injury and chronic kidney disease and to reliable characterization of the renal status of the patient before performing a liver transplantation.Despite some limitations,the assay of serum creatinine(SCr)is universally used to estimate glomerular filtration rate(GFR)because of its wide availability,its simplicity and because it is inexpensive.Nevertheless,several reports show that the value of this assay to estimate GFR is strongly challenged in cirrhotic patients,especially in patients with liver failure and/or severely impaired renal function.This has led to seek new alternatives to estimate more reliably the GFR in these patients.Although the reference methods,based on the utilization of exogenous markers,allow measuring GFR and thereby constitute the'gold standard'to evaluate renal function,they are not feasible in routine clinical practice.Several studies have shown that a cystatin C(CysC)based formula perform better than the SCr-based estimates in cirrhotic patients and the estimation of GFR by these formulas could therefore lead to optimize the management of the patients.A new estimate based on CysC has been recently developed using a large number of patients and the first results regarding the evaluation of its performance are promising,making this new formula the best candidate for a reference estimate of the renal function in cirrhotic patients. | Nicolas Rognant Sandrine Lemoine | 2014 | World Journal of Gastroenterology2014,20,10: | 10 |
| 6 | Anterior rectopexy for full-thickness rectal prolapse: Technical and functional results显示文摘AIM:To assess effectiveness, complications, recurrence rate, and recent improvements of the anterior rectopexy procedure for treatment of total rectal prolapse.METHODS:MEDLINE, Pub Med, EMBASE, and other relevant database were searched to identify studies.Randomized controlled trials, non-randomized studies and original articles in English language, with more than 10 patients who underwent laparoscopic ventral rectopexy for full-thickness rectal prolapse, with a follow-up over 3 mo were considered for the review.RESULTS:Twelve non-randomized case series studies with 574 patients were included in the review.No surgical mortality was described.Conversion was needed in 17 cases(2.9%), most often due to difficult adhesiolysis.Twenty eight patients(4.8%) presented with major complications.Seven(1.2%) mesh-related complications were reported.Most frequent complications were urinary tract infection and urinary retention.Mean recurrence rate was 4.7% with a median follow-up of 23 mo.Improvement of constipation ranged from 3%-72% of the patients and worsening or new onset occurred in 0%-20%.Incontinence improved in 31%-84% patients who presented fecal incontinence at various stages.Evaluation of functional score was disparate between studies.CONCLUSION:Based on the low long-term recurrence rate and favorable outcome data in terms of low de novo constipation rate, improvement of anal incontinence, and low complications rate, laparoscopic anterior rectopexy seems to emerge as an efficient procedure for the treatment of patients with total rectal prolapse. | Jean-Luc Faucheron Bertrand Trilling Edouard Girard Pierre-Yves Sage Sandrine Barbois Fabian Reche | 2015 | World Journal of Gastroenterology2015,21,16: | 7 |
| 7 | Comparative Transcriptomic Analysis of Salt Adaptation in Roots of Contrasting Medicago truncatula Genotypes显示文摘进化差异能被和不同环境的植物的相互作用驾驶。涉及生态的改编到不能生活的限制的分子的底能用 genomic 工具被探索。荚是世界范围的主要庄稼,土壤咸度是在这些植物影响产量的一个主要压力。我们在 Medicago truncatula 荚分析了让对比回答腌应力的二遗传型的根 transcriptome:TN1.11,在咸突尼斯的土壤,和参考 Jemalong A17 遗传型取样了。TN1.11 植物在盐应力以及钠离子的微分累积下面看增加的根生长是否与 A17 相比。Transcriptomic 分析揭示了盐优先地在 TN1.11 的根顶调整的特定的基因簇,尤其是那些与植物生长素小径有关并且到在 histone 变体 isoforms 的变化。编码抄写因素(TF ) 的许多基因也是响应盐在二遗传型之间调整的差别。在为功能的研究选择的那些之中,在大多数差别在遗传型之间调整了的 bHLH 类型 TF 的 A17 遗传型的根的 overexpression 显著地在盐应力下面改进了根生长。尽管有微分 transcriptional 回答的全球复杂性,我们建议这 bHLH TF 表情的增加可以被连接到 M 的改编。truncatula 到盐的土壤环境。 | Ons Zahaf Sandrine Blanchet Axel de Zelicourt Benoit Alunni Julie Plet Carole Laffont Laura de Lorenzo Sandrine Imbeaud Jean-Laurent lchante Anouck Diet Mounawer Badri Ana Zabalza Esther M. Gonzalez Herve Delacroix Veronique Gruber Florian Frugier Martin Crespi | 2012 | Molecular Plant2012,5,5: | 7 |
| 8 | 粘土矿物比率对沙尘源区的指示显示文摘为了探讨中国北方沙尘源区矿物组成特征并建立沙尘气溶胶的矿物示踪指标,在亚太地区气溶胶特征实验(ACE-Asia)期间对新疆阿克苏、甘肃敦煌、陕西榆林和内蒙古通辽沙尘气溶胶的矿物组成进行了研究.结果显示,中国主要沙尘源区沙尘气溶胶中高岭石与绿泥石的比率存在明显差异,西部沙尘源区(以阿克苏站点为代表)高岭石与绿泥石的比值较小(平均值为0·3),而北部沙尘源区(以榆林站点为代表)高岭石与绿泥石的比值相对较高(平均值为0·7).沉降区长武尘暴样品的粘土矿物比率和气团轨迹分析证实,在区域范围,高岭石与绿泥石的比值为较好的沙尘源区矿物示踪指标.而亚洲沙尘与撒哈拉沙尘的对比显示,高岭石与绿泥石的比值在全球范围有着沙尘源区指示的意义. | 沈振兴 张小曳 曹军骥 王亚强 Sandrine Caquineau 李旭祥 张仁健 | 2005 | 环境科学2005,26,4: | 6 |
| 9 | Long-distance nitrate signaling displays cytokinin dependent and independent branches显示文摘The long-distance signaling network allowing a plant to properly develop its root system is crucial to optimize root foraging in areas where nutrients are available. Cytokinin is an essential element of the systemic signaling network leading to the enhancement of lateral root proliferation in areas where nitrate is available. Here,we explore more precisely:(i) which particular traits of lateral root growth(density and length of emerged lateral roots) are the targets of systemic signaling in a context of heterogeneous nitrate supply; and(ii) if the systemic signaling depends only on cytokinin or on a combination of several signalings. | Sandrine Ruffel Arthur Poitout Gabriel Krouk Gloria M.Coruzzi Benoit Lacombe | 2016 | Journal of Integrative Plant Biology2016,58,3: | 5 |
| 10 | CHARACTERISTICS OF CLAY MINERALS IN ASIAN DUST AND THEIR ENVIRONMENTAL SIGNIFICANCE显示文摘The objectives of this research were to characterise the clay minerals composition of soil-derived dust in Northern China and to set up a mineralogical signature to trace their origin. Mineral composition of aerosol particles was investigated at Aksu, Dunhuang, Yulin, Tongliao and Changwu during an intensive field campaign period of ACE-Asia.The results show that the kaolinite (K) to chlorite (C) ratio is sensitive to the regional origin of Asian dust. Western source areas (represented by Aksu) displayed the lowest K/C ratio of 0.3 (average), while it was found to increase up to 0.70(average) upon moving towards northern source areas (represented by Yulin). By studying transported dust in a deposition area representative of the Chinese Loess Plateau, the usefulness of the K/C ratio, when associated with back air-mass trajectories, was found to lie in revealing the origin of the dust. Comparison of the mineralogical data between Asian dust and Sahara dust, shows that the K/C ratio is also an effective signature to identify the source areas on a hemisphere scale. | Zhenxing Shen Xuxiang Li Junji Cao Sandrine Caquineau Yaqiang Wang Xiaoye Zhang | 2005 | China Particuology2005,3,5: | 5 |
| 11 | The controlled attenuation parameter (CAP): A novel tool for the non-invasive evaluation of steatosis using Fibroscan ?显示文摘 | M. Sasso V. Miette L. Sandrin M. Beaugrand | 2011 | Clinics and Research in Hepatology and Gastroenterology2011,,1: | 4 |
| 12 | Mineralogical characteristics of soil dust from source regions in northern China显示文摘Mineral compositions of aerosol particles were investigated at four sites (Aksu, Dunhuang, Zhenbeitai, and Tongliao) in desert regions of northern China from March to May in 2001 and 2002 during the intensive field campaign period of ACE-Asia (Aerosol Characterization Experiments-Asia). The X-ray diffraction (XRD) results show the main minerals for Asian dust are illite, chlorite, kaolinite, quartz, feldspar, calcite, and dolomite. Gypsum, hornblende, and halite are also detected in several samples. Semi-quantitative mineralogical data of aerosol samples show that carbonate content decreases from western to eastern source areas; that is, soil dust collected at western source area sites of Dunhuang and Aksu are enriched with carbonate, while northeastern source area site of Tongliao is associated with low carbonate content. But the spatial distribution of feldspar exhibits a different pattern as compared to carbonate, increasing from the western to the eastern sources. The total clay content is significantly higher (73% in average) at the deposition site of Changwu than those at source areas. Air-mass back trajectory studies for the three dust storm events observed at Changwu, showed that soil dust transport pathways were as expected from carbonate content for the source identification, further demonstrating that carbonate was a useful tracer for eolian dust on regional scale in northern China. | Zhenxing Shen Sandrine Caquineau Junji Cao Xiaoye Zhang Yuemei Han Annie Gaudichet Laurent Gomes | 2009 | Particuology2009,7,6: | 4 |
| 13 | Disease control with sunitinib in advanced intrahepatic cholangiocarcinoma resistant to gemcitabine-oxaliplatin chemotherapy显示文摘Advanced cholangiocarcinoma is associated with poor prognostic survival and has limited therapeutic options available at present. The importance of angiogenesis and expression of pro-angiogenic factors in intrahepatic forms of cholangiocarcinoma suggest that therapies targeting angiogenesis might be useful for the treatment of this disease. Here we report three cases of patients with advanced intrahepatic cholangiocarcinoma progressive after standard chemotherapy and treated with sunitinib 50 mg/d in 6-wk cycles of 4 wk on treatment followed by 2 wk off treatment(Schedule 4/2). In all three patients, sunitinib treatment was associated with a sustained disease control superior to 4 mo, patients achieving either a partial response or stable disease. A reduction in tumor size and density was observed in all cases, suggesting tumor necrosis as a result of sunitinib treatment in these patients. In addition, sunitinib was generally well tolerated and the occurrence of side effects was managed with standard medical interventions, as required. Our results suggest that sunitinib therapy maybe associated with favorable outcomes and tolerability in patients with advanced cholangiocarcinoma. Those observations contributed to launch a prospective phase Ⅱ multicenter trial investigating sunitinib in advanced intrahepatic cholangiocarcinoma(SUN-CK study; NCT01718327). | Chantal Dreyer Marie-Paule Sablin Mohamed Bouattour Cindy Neuzillet Maxime Ronot Safi Dokmak Jacques Belghiti Nathalie Guedj Valérie Paradis Eric Raymond Sandrine Faivre | 2015 | World Journal of Hepatology2015,7,6: | 4 |
| 14 | N-acetylcysteine and glycyrrhizin combination:Benefit outcome in a murine model of acetaminophen-induced liver failure显示文摘BACKGROUND Acetaminophen overdose is the most frequent cause of drug-induced liver failure in developed countries.Substantial progress has been made in understanding the mechanism of hepatocellular injury,but N-acetylcysteine remains the only effective treatment despite its short therapeutic window.Thus,other hepatoprotective drugs are needed for the delayed treatment of acetaminopheninduced hepatotoxicity.Our interest focused on glycyrrhizin for its role as an inhibitor of high mobility group box 1(HMGB1)protein,a member of the family of damage-associated molecular pattern,known to play an important pathological role in various diseases.AIM To investigate the efficacy of the N-acetylcysteine/glycyrrhizin combination compared to N-acetylcysteine alone in the prevention of liver toxicity.METHODS Eight-week-old C57BL/6J wild-type female mice were used for all our experiments.Mice fasted for 15 h were treated with acetaminophen(500 mg/kg)or vehicle(phosphate-buffered saline)by intraperitoneal injection and separated into the following groups:Glycyrrhizin(200 mg/kg);N-acetylcysteine(150 mg/kg);and N-acetylcysteine/glycyrrhizin.In all groups,mice were sacrificed 12 h following acetaminophen administration.The assessment of hepatotoxicity was performed by measuring plasma levels of alanine aminotransferase,aspartate aminotransferase and lactate dehydrogenase.Hepatotoxicity was also evaluated by histological examination of hematoxylin and eosin-stained tissues sections.Survival rates were compared between various groups using Kaplan-Meier curves.RESULTS Consistent with data published in the literature,we confirmed that intraperitoneal administration of acetaminophen(500 mg/kg)in mice induced severe liver injury as evidenced by increases in alanine aminotransferase,aspartate aminotransferase and lactate dehydrogenase but also by liver necrosis score.Glycyrrhizin administration was shown to reduce the release of HMGB1 and significantly decreased the severity of liver injury.Thus,the co-administration of glycyrrhizin and N-acetylcysteine was investigated.Administered concomitantly with acetaminophen,the combination significantly reduced the severity of liver injury.Delayed administration of the combination of drugs,2 h or 6 h after acetaminophen,also induced a significant decrease in hepatocyte necrosis compared to mice treated with N-acetylcysteine alone.In addition,administration of N-acetylcysteine/glycyrrhizin combination was associated with an improved survival rate compared to mice treated with only N-acetylcysteine.CONCLUSION We demonstrate that,compared to N-acetylcysteine alone,co-administration of glycyrrhizin decreases the liver necrosis score and improves survival in a murine model of acetaminophen-induced liver injury.Our study opens a potential new therapeutic pathway in the prevention of acetaminophen hepatotoxicity. | Charlotte Minsart Sandrine Rorive Arnaud Lemmers Eric Quertinmont Thierry Gustot | 2020 | World Journal of Hepatology2020,12,9: | 4 |
| 15 | Prevalence and virological profiles of hepatitis B infection in human immunodeficiency virus patients显示文摘AIM: To determine the prevalence of hepatitis B virus (HBV) in adult human immunodeficiency virus (HIV) patients with CD4+ T-cell count less than 500/mm 3 and without antiretroviral therapy; to describe different HBV-HIV coinfection virological profiles; and to search for factors associated with HBs antigen (HBsAg) presence in these HIV positive patients.METHODS: During four months (June through September 2006), 491 patients were received in four HIV positive monitoring clinical centers in Abidjan. Inclusion criteria: HIV-1 or HIV-1 and 2 positive patients, age ≥ 18 years, CD4+ T-cell count < 500/mL and formal and signed consent of the patient. Realized blood tests included HIV serology, CD4+ T-cell count, quantitative HIV RNA load and HBV serological markers, such as HBsAg and HBc antibody (anti-HBcAb). We performed HBeAg, anti-HBe antibody (anti-HBeAb), anti-HBc IgM and quantitative HBV DNA load in HBsAg positive patients. Anti-HBsAb had been tested in HIV patients with HBsAg negative and anti-HBcAb-positive. HBV DNA was also tested in 188 anti-HBcAb positive patients with HBsAg negative status and without anti-HBsAb. Univariate analysis (Pearsonχ 2 test or Fischer exact test) and multivariate analysis (backward step-wise selection logistic regression) were performed as statistical analysis. RESULTS: Mean age of 491 patients was 36 ± 8.68 years and 73.3% were female. Type-1 HIV was found in 97% and dual-type HIV (type 1 plus type 2) in 3%. World Health Organization (WHO) clinical stage was 1, 2, 3 and 4 respectively in 61 (12.4%), 233 (47.5%), 172 (35%) and 25 patients (5.1%). Median CD4+ T-cell count was 341/mm 3 (interquartile range: 221-470). One hundred and twelve patients had less than 200 CD4+ T-cell/mm 3 . Plasma HIV-1 RNA load was elevated (≥ 5 log 10 copies/mL) in 221 patients (45%). HBsAg and anti-HBcAb prevalence was respectively 13.4% and 72.9%. Of the 66 HBsAg positive patients, 22 were inactive HBV carriers (33.3%), 21 had HBeAg positive hepatitis (31.8%) and 20 had HBeAg negative hepatitis (30.3%). HBeAg and anti-HBeAb were indeterminate in 3 of them. Occult B infection prevalence (HBsAg negative, anti-HBcAb positive, anti-HBsAb negative and detectable HBV DNA) was 21.3%. Three parameters were significantly associated with the presence of HBsAg: male [odds ratio (OR): 2.2;P = 0.005; 95% confidence interval (CI): 1.3-3.8]; WHO stage 4 (OR: 3.2;P = 0.01;95% CI: 1.3-7.9); and aspartate aminotransferase (AST) level higher than the standard (OR: 1.9;P = 0.04; 95% CI: 1.02-3.8). CONCLUSION: HBV infection prevalence is high in HIV-positive patients. HBeAg positive chronic hepatitis and occult HBV infection are more frequent in HIVpositive patients than in HIV negative ones. Parameters associated with HBsAg positivity were male gender, AIDS status and increased AST level. | Koffi Alain Attia Serge Eholié Eugène Messou Christine Danel Sandrine Polneau Henri Chenal Thomas Toni Myreille Mbamy Catherine Seyler Naomi Wakasugi Thérèse N'dri-Yoman Xavier Anglaret | 2012 | World Journal of Hepatology2012,4,7: | 4 |
| 16 | Stromal expression of SPARC in pancreatic adenocarcinoma显示文摘 | Cindy Neuzillet Annemila? Tijeras-Raballand Jér?me Cros Sandrine Faivre Pascal Hammel Eric Raymond | 2013 | Cancer and Metastasis Reviews (-)2013,,3: | 4 |
| 17 | High-energy hybrid femtosecond laser system demonstrating 2×10 PW capability显示文摘We report on a two-arm hybrid high-power laser system(HPLS)able to deliver 2×10 PW femtosecond pulses,developed at the Bucharest-Magurele Extreme Light Infrastructure Nuclear Physics(ELI-NP)Facility.A hybrid frontend(FE)based on a Ti:sapphire chirped pulse amplifier and a picosecond optical parametric chirped pulse amplifier based on beta barium borate(BBO)crystals,with a cross-polarized wave(XPW)filter in between,has been developed.It delivers 10 mJ laser pulses,at 10 Hz repetition rate,with more than 70 nm spectral bandwidth and high-intensity contrast,in the range of 1013:1.The high-energy Ti:sapphire amplifier stages of both arms were seeded from this common FE.The final high-energy amplifier,equipped with a 200 mm diameter Ti:sapphire crystal,has been pumped by six 100 J nanosecond frequency doubled Nd:glass lasers,at 1 pulse/min repetition rate.More than 300 J output pulse energy has been obtained by pumping with only 80%of the whole 600 J available pump energy.The compressor has a transmission efficiency of 74%and an output pulse duration of 22.7 fs was measured,thus demonstrating that the dual-arm HPLS has the capacity to generate 10 PW peak power femtosecond pulses.The reported results represent the cornerstone of the ELI-NP 2×10 PW femtosecond laser facility,devoted to fundamental and applied nuclear physics research. | François Lureau Guillaume Matras Olivier Chalus Christophe Derycke Thomas Morbieu Christophe Radier Olivier Casagrande Sébastien Laux Sandrine Ricaud Gilles Rey Alain Pellegrina Caroline Richard Laurent Boudjemaa Christophe Simon-Boisson Andrei Baleanu Romeo Banici Andrei Gradinariu Constantin Caldararu Bertrand De Boisdeffre Petru Ghenuche Andrei Naziru Georgios Kolliopoulos Liviu Neagu Razvan Dabu Ioan Dancus Daniel Ursescu | 2020 | High Power Laser Science and Engineering2020,8,4: | 4 |
| 18 | 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 |
| 19 | Diet breadth and mortality patterns from Laoya Cave: A primary profile of MIS 3/2 hunting strategies in the Yunnan-Guizhou Plateau, southwest China显示文摘Laoya Cave is a long-term occupation site of Late Paleolithic humans in the Yunnan-Guizhou Plateau, southwest China, where abundant lithic, bone materials were recovered. Dating by the AMS technique showed a significant depositional process during marine isotope stage(MIS) 3/2. In this study, the species spectrum was presented from the perspective of zooarchaeology and the mortality profile of large Cervidae was examined to help increase our understanding of the subsistence strategy of local people dealing with climate and environmental changes. The main part of the diet was focused on large Cervidae, and the dominance of Ungulates indicates effective management of the cave and local fauna. On the other hand, the mortality profiles of large Cervidae varied correspondingly with climate change. The evidence indicates a specialized hunting strategy that was also flexible, depending on the prevailing climate and environment. | WANG XiaoMin GUAN Ying CAI HuiYang Sandrine COSTAMAGNO ZHANG LiMin XU ChunHua GAO Xing | 2016 | Science China Earth Sciences2016,59,8: | 3 |
| 20 | Controlled Attenuation Parameter (CAP): A Novel VCTE? Guided Ultrasonic Attenuation Measurement for the Evaluation of Hepatic Steatosis: Preliminary Study and Validation in a Cohort of Patients with Chronic Liver Disease from Various Causes显示文摘 | Magali Sasso Michel Beaugrand Victor de Ledinghen Catherine Douvin Patrick Marcellin Raoul Poupon Laurent Sandrin Véronique Miette | 2010 | Ultrasound in Medicine & Biology2010,,11: | 3 |