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Le 20 mai

法语国家与地区研究 2010年第3期 6-8页

作者： delphine de Vigan

La voix traverse le sommeil,oscille à la *** femme caresse les cartes retournées sur la table,elle répète plusieurs fois,sur ce ton de certitude :le 20 mai,votre vie va changer.

关键词： Le 20 mai

Clinical characteristics and outcomes of patients with hepatic angiomyolipoma:A literature review

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World Journal of Gastroenterology 2021年第19期27卷 2299-2311页

作者： Paul Calame Gaelle Tyrode delphine Weil Verhoeven Sophie Felix Anne Julia Klompenhouwer Vincent Di Martino Eric Delabrousse Thierry Thevenot Department of Radiology Jean Minjoz University HospitalBesançon 25030France Department of Hepatology Jean Minjoz University HospitalBesançon 25030France Department of Pathology Jean Minjoz University HospitalBesançon 25000France Department of Surgery Erasmus University Medical CenterRotterdam PO Box 2040The Netherlands

First reported in 1976,hepatic angiomyolipoma(HAML)is a rare mesenchymal liver tumor occurring mostly in middle-aged *** of the liver mass is often incidental on abdominal imaging due to the frequent absence of specific *** 10%of HAMLs are associated with tuberous sclerosis *** contains variable proportions of blood vessels,smooth muscle cells and adipose tissue,which renders radiological diagnosis *** express positivity for HMB-45 and actin,thus these tumors are integrated into the group of perivascular epithelioid cell ***,a HAML appears on magnetic resonance imaging(or computed tomography scan)as a hypervascular solid tumor with fatty areas and with washout,and can easily be misdiagnosed as other liver tumors,particularly hepatocellular *** therapeutic strategy is not clearly defined,but surgical resection is indicated for symptomatic patients,for tumors showing an aggressive pattern(i.e.,changes in size on imaging or high proliferation activity and atypical epithelioid pattern on liver biopsy),for large(>5 cm)biopsy-proven HAML,and if doubts remain on imaging or *** management may be justified in other conditions,since most cases follow a benign clinical *** summary,the correct diagnosis of HAML is challenging on imaging and relies mainly on pathological findings.

关键词： Angiomyolipoma Liver Tuberous sclerosis complex Imaging Pathology Potentially malignant

Microbial markers in colorectal cancer detection and/or prognosis

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World Journal of Gastroenterology 2018年第22期24卷 2327-2347页

作者： Romain Villéger Amélie Lopès Julie Veziant Johan Gagnière Nicolas Barnich Elisabeth Billard delphine Boucher Mathilde Bonnet Université Clermont Auvergne Research Biologics Sanofi R&D Chirurgie digestive Centre Hospitalier Universitaire Université Clermont Auvergne Institut Universitaire de Technologie de Clermont-Ferrand

Colorectal cancer(CRC) is the second leading cause of cancer worldwide. CRC is still associated with a poor prognosis among patients with advanced disease. On the contrary, due to its slow progression from detectable precancerous lesions, the prognosis for patients with early stages of CRC is encouraging. While most robust methods are invasive and costly, actual patient-friendly screening methods for CRC suffer of lack of sensitivity and specificity. Therefore, the development of sensitive, non-invasive and cost-effective methods for CRC detection and prognosis are necessary for increasing the chances of a cure. Beyond its beneficial functions for the host, increasing evidence suggests that the intestinal microbiota is a key factor associated with carcinogenesis. Many clinical studies have reported a disruption in the gut microbiota balance and an alteration in the faecal metabolome of CRC patients, suggesting the potential use of a microbialbased test as a non-invasive diagnostic and/or prognostic tool for CRC screening. This review aims to discuss the microbial signatures associated with CRC known to date, including dysbiosis and faecal metabolome alterations, andthe potential use of microbial variation markers for noninvasive early diagnosis and/or prognostic assessment of CRC and advanced adenomas. We will finally discuss the possible use of these markers as predicators for treatment response and their limitations.

关键词： Colorectal cancer microbiota F.nucleatum Colibactin-producing E.coli prognostic markers diagnostic markers dysbiosis

Type I interferons promote the survival and proinflammatory properties of transitional B cells in systemic lupus erythematosus patients

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Cellular & Molecular Immunology 2019年第4期16卷 367-379页

作者： Mei Liu Qiang Guo Chunmei Wu delphine Sterlin Shyamal Goswami Ying Zhang Teng Li Chunde Bao Nan Shen Qiong Fu Xiaoming Zhang Key Laboratory of Molecular Virology&Immunology Institut Pasteur of ShanghaiChinese Academy of Sciences/University of Chinese Academy of SciencesShanghai 200031China Department of Rheumatology Renji HospitalShanghai Jiaotong University School of MedicineShanghai 200001China

A hallmark of systemic lupus erythematosus(SLE)is the breaking of B-cell tolerance with the generation of high-affinity autoantibodies;however,the antibody-independent features of the B-cell compartment in SLE are less *** this study,we performed an extensive examination of B-cell subsets and their proinflammatory properties in a Chinese cohort of new-onset SLE *** observed that SLE patients exhibited an increased frequency of transitional B cells compared with healthy donors and rheumatoid arthritis *** from SLE patients potently promoted the survival of transitional B cells in a type I IFN-dependent manner,which can be recapitulated by direct IFN-α***,the effect of IFN-αon enhanced survival of transitional B cells was associated with NF-κB pathway activation and reduced expression of the pro-apoptotic molecule *** B cells from SLE patients harbored a higher capacity to produce proinflammatory cytokine IL-6,which was also linked to the overactivated type I IFN *** addition,the frequency of IL-6-producing transitional B cells was positively correlated with disease activity in SLE patients,and these cells were significantly reduced after short-term standard ***,the current study provides a direct link between type I IFN pathway overactivation and the abnormally high frequency and proinflammatory properties of transitional B cells in active SLE patients,which contributes to the understanding of the roles of type I IFNs and B cells in the pathogenesis of SLE.

关键词： Systemic lupus erythematosus type I interferons transitional B cells apoptosis interleukin 6

Palynological and Physicochemical Characterization of Honey in the Sudano-Guinean Zone of Cameroon

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Food and Nutrition Sciences 2015年第15期6卷 1339-1350页

作者： Dongock Nguemo delphine Tchoumboue Joseph Laboratory of Biodiversity and Sustainability Development Department of Biological Sciences University of Ngaoundere Ngaoundere Cameroon Laboratory of Animal Physiology Department of Animal Production University of Dschang Dschang Cameroon

The palynological and physico-chemical characterization of honey was investigated in the Sudano- Guinean zone of Cameroon through the melissopalynology analysis. Results showed that honey with the dark amber color was the most represented. Sweet honey with less odour considered as pleasant highly predominate. The pH of honey is low and varies from 3.95 to 5.00;this ranking confirms the hypothesis that honey is from plant through visit of honeybees. The sugar content is very high ranging from 77.93% to 83.13%;the mean value is 78.90% and this value confirms that the honey is floral honey. The density value ranges from 1.39 to 1.43 and does not exceed the average standard (1.39 to 1.44 at 20℃). Water contents correspond to the standards norms. For free acidity, the highest value is 48.68 ± 0.28. There is a low positive correlation (r = 0.2) between free acidity and the pH of honey. Pollen analysis of honeys led to the identification of 41 pollen species belonging to 25 families. The highly represented families are Asteraceae and Myrtaceae. Two thirds of honey is monofloral and characteristics of three dominant species: Nymphaea maculata, Terminalia avicennioides and Syzygium guineense. The pollens of Syzygium guineense are present in all honey samples analysed.

关键词： Honey Melissopalynology Palynological Analysis Physicochemical Analysis Cameroon

Interplay of S and As in Mekong Delta sediments during redox oscillations

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Geoscience Frontiers 2019年第5期10卷 1715-1729页

作者： Van T.H. Phan Fabrizio Bardelli Pierre Le Pape Raoul-Marie Couture Alejandro Fernandez-Martinez delphine Tisserand Rizlan Bernier-Latmani Laurent Charlet University Grenoble Alpes CNRSIRDIFSTTARISTerre38000GrenobleFrance Ho Chi Minh City University of Technology (HCMUT) Vietnam National UniversityHo Chi Minh City (VNU-HCM)268 Ly Thuong KietDistrict 10Ho Chi Minh CityViet Nam Institute of Nanotechnology (CNR-Nanotec) 00186RomeItaly Institut de Mineralogie de Physique des Materiaux et de Cosmochimie (IMPMC)UMR 7590 CNRS-UPMC-IRD-MNHN4 Place Jussieu75252Paris cedex 05France Département de chimie Université Laval1045 Avenue de la MédecineQuébecQCG1V 0A6Canada Ecole Polytechnique Fédérale de Lausanne (EPFL) e Environmental Microbiology Laboratory (EML) EPFL-ENAC-IIE-EMLStation 6CH-1015LausanneSwitzerland

The cumulative effects of periodic redox cycling on the mobility of As,Fe,and S from alluvial sediment to groundwater were investigated in bioreactor *** particular sediments from the alluvial floodplain of the Mekong Delta River were investigated: Matrix A (14 m deep) had a higher pyrite concentration than matrix B (7 m deep) *** present in matrix B but absent in matrix *** the reactors,the sediment suspensions were supplemented with As(III) and SO4^2-,and were subjected to three full-redox cycles entailing phases of nitrogen/CO2,compressed air sparging,and cellobiose *** differences in As concentration and speciation were observed upon redox *** support the fact that initial sediment composition is the main factor controlling arsenic release and its speciation during the redox ***,a high pyrite content associated with a low SO4^2- content resulted in an increase in dissolved As concentrations,mainly in the form of As(III),after anoxic half-cycles;whereas a decrease in As concentrations mainly in the form of As(V),was instead observed after oxic *** addition,oxic conditions were found to be responsible for pyrite and arsenian pyrite oxidation,increasing the As pool available for *** same processes seem to occur in sediment with the presence of gypsum,but,in this case,dissolved As were sequestered by biotic or abiotic redox reactions occurring in the FeeS system,and by specific physico-chemical condition (***).The contrasting results obtained for two sediments sampled from the same core show that many complexes and entangled factors are at work,and further refinement is needed to explain the spatial and temporal variability of As release to groundwater of the Mekong River Delta (Vietnam).

关键词： Redox oscillation Pyrite oxidation Gypsum dissolution Isotope sulfur Isotope oxygen

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PHOX2B mutations in three Chinese patients with congenital central hypoventilation syndrome

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Chinese Medical Journal 2006年第20期119卷 1749-1752页

作者： Siu-Fong June Or Ming-for Tony Tong Fai-Man Ivan Lo Chi-Wai Law Ting-Yat Miu delphine Trochet Tak-Sum Stephen Lam Clinical Genetic Service Department of Health Hong Kong SAR China Department of Paediatrics Queen Elizabeth Hospital Hong Kong SAR China Department de Genetique Hospital Necker-Enfants Malades Paris France

Congenital central hypoventilation syndrome （CCHS, OMIM #209880） is a rare autosomal dominant disorder of the autonomic nervous system （ANS） characterized by an abnormal autonomic ventilatory response to progressive hypercarbia and sustained hypoxemia. Patients typically present in the newborn period with hypoventilation or apnea asleep, awake, or both, without any associated cardiac, pulmonary, neuromuscular or brainstem lesions. Rarely, some patients may present at a later age and are diagnosed to have late onset central hypoventilation syndrome （LOCHS）.1 Other features of ANS dysfunction such as feeding difficulty due to oesophageal dysmotility, severe constipation in the absence of Hirschsprung disease, poor regulation of basal body temperature, episodes of profuse sweating, pupillary and ocular abnormalities, decreased beat-to-beat variability of heart rate, attenuated response of heart rate to exercise, abnormal fluctuation of blood pressure, decreased perception to pain, and decreased perception to anxiety may be variably present but not essential for diagnosis Furthermore, this central hypoventilation can occur as an isolated feature or in association with a number of neurocristopathies, notably Hirschsprung disease （Haddad syndrome, OMIM #209880） and tumours of the sympathetic nervous system particularly neuroblastoma, ganglioneuro- blastoma, and ganglioneuroma, which were found in 20% and 5%--10% of CCHS patients, respectively.2 Studies of genes pertinent to the early embryologic development of the neural crest cells, specifically the endothelin and the RET-GDNF signaling pathways, have recently led to the identification of PHOX2B as the major disease causing gene for CCHS.2-6 PHOX2B was mapped to chromosome 4p12 and consists of 3 exons. It encodes a highly conserved paired-like homeobox transcription factor of 314 amino acids linked to the RET-GDNF signaling

关键词： congenital central hypoventilation syndrome PHOX2B Chinese mutation

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Osteocyte pericellular and perilacunar matrices as markers of bone-implant mechanical integrity

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BIOCELL 2022年第10期46卷 2209-2216页

作者： ReMY GAUTHIER HeLÈNE FOLLET ANA-MARIA TRUNFIO-SFARGHIU delphine FARLAY NINA ATTIK SYLVAIN MEILLE JeRÔME CHEVALIER DAVID MITTON Universite de Lyon CNRSINSA de LyonUniversite Claude Bernard Lyon 1MATEISUMR5510VilleurbanneF-69621France Universite de Lyon Universite Claude Bernard Lyon 1INSERMLYOS UMR 1033LyonF-69008France Universite de Lyon INSA-LyonCNRS UMR5259LaMCoSVilleurbanneF-69621France Universite de Lyon Universite Claude Bernard Lyon 1UMR CNRS 5615Laboratoire des Multimateriaux et InterfacesVilleurbanneF-69622France Universite de Lyon Universite Claude Bernard Lyon 1Faculte d’OdontologieLyonF-69008France Universite de Lyon Universite Gustave EiffelUniv Claude Bernard Lyon 1LBMC UMR_T 9406LyonF-69622France

To develop durable bone healing strategies through improved control of bone repair,it is of critical importance to understand the mechanisms of bone mechanical integrity when in contact with biomaterials and *** mechanical integrity is defined here as the adaptation of structural properties of remodeled bone in regard to an applied mechanical ***,the authors present why future investigations in bone repair and regeneration should emphasize on the matrix surrounding the *** are mechanosensitive cells considered as the orchestrators of bone remodeling,which is the biological process involved in bone *** bone cells are trapped in an interconnected porous network,the lacunocanalicular network,which is embedded in a bone mineralized extracellular *** a consequence of an applied mechanical loading,the bone deformation results in the deformation of this lacunocanalicular network inducing a shift in interstitial fluid pressure and velocity,thus resulting in osteocyte *** material environment surrounding each osteocyte,the so called perilacunar and pericellular matrices properties,define its *** this mechanical stimulation pathway is well known,the laws used to predict bone remodeling are based on strains developing at a tissue scale,suggesting that these strains are related to the shift in fluid pressure and velocity at the lacunocanalicular *** this relationship has been validated through observation in healthy bone,the fluid behavior at the bone-implant interface is more *** presence of the implant modifies fluid behavior,so that for the same strain at a tissue scale,the shift in fluid pressure and velocity will be different than in a healthy bone *** that context,new markers for bone mechanical integrity,considering fluid behavior,have to be *** viewpoint exposed by the authors indicates that the properties of the pericellular and the perilacunar

关键词： Bone mechanical integrity Osteocytes Pericellular Perilacunar Mechanosensitivity

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载硫活性炭脱汞剂制备及脱汞性能实验研究

载硫活性炭脱汞剂制备及脱汞性能实验研究

作者： MUKAMURARA delphine 大连理工大学

学位级别：硕士

近年来,天然气作为清洁能源广泛应用于发电、化工、城市燃气等领域。然而,在天然气开采和运输过程中,汞元素的存在会对人体健康、铝设备和生态环境等造成危害。汞具有毒性、持久性、生物累积性和大范围的传播性。它会腐蚀铝设备,导致容... 详细信息

近年来,天然气作为清洁能源广泛应用于发电、化工、城市燃气等领域。然而,在天然气开采和运输过程中,汞元素的存在会对人体健康、铝设备和生态环境等造成危害。汞具有毒性、持久性、生物累积性和大范围的传播性。它会腐蚀铝设备,导致容器减压、管道泄漏和爆炸。因此,实现含汞天然气的高效且经济的净化已成为天然气循环利用发展中亟待解决的问题之一。在工业上,活性炭常用作天然气中汞的吸附剂。根据活性炭的孔结构和比表面积的微观性质,实验中用硫对活性炭进行改性,并用固定床吸附装置评价吸附剂的吸附能力。本实验主要采用高温硫化法和超临界流体沉积法制备硫浸渍的多孔活性炭。高温硫化法制备硫浸渍多孔活性炭的主要影响因素有浸渍时间、浸渍温度和硫碳比;超临界流体沉积法的主要影响因素包括温度、压力、浸渍比和共溶剂。研究结果表明:采用高温硫浸渍法合成了硫浸渍的多孔活性炭,并在小型固定床反应器中,将所合成的吸附剂应用于去除天然气中的汞元素。设计了一系列的实验探究了Hg的最佳捕获条件。此外,实验结果表明,脱除Hg的最佳条件分别为:硫与活性炭的浸渍比为1:10、浸渍温度为350℃以及浸渍时间为3小时。高温可以改变活性炭的表面性质,从而形成了新的活性吸附位点。首先,随着浸渍温度的逐渐升高,硫浸渍的多孔活性炭的吸附容量随之增大。然而,当浸渍温度高于500℃时、硫浸渍的多孔活性炭的吸附容量开始减小。研究表明,制备的吸附剂能够以较高的吸附效率去除大量的Hg（23.615mg/g）。本研究工作可为天然气发电厂在相同条件下脱除汞提供参考。在超临界实验中,压力和温度对试样有很大的影响。其中优化制备的吸附剂在12.5 MPa下,反应器温度在40～80°C时,吸附剂具有最佳的吸附能力。二硫化碳溶液是促进硫进入活性炭孔隙,提高硫装填效率的共溶剂。

关键词：载硫多孔活性炭汞的吸附高温渗硫超临界流体沉积天然气固定床