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Modification of tubular chitosan-based peripheral nerve implants: applications for simple or more complex approaches

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Neural Regeneration Research 2020年第8期15卷 1421-1431页

作者： Nina Dietzmeyer Maria F?rthmann claudia Grothe Kirsten Haastert-Talini Institute of Neuroanatomy and Cell Biology Hannover Medical School Center for Systems Neuroscience (ZSN) Hannover

Surgical treatment of peripheral nerve injuries is still a major challenge in human *** to now,none of the well-developed microsurgical treatment options is able to guarantee a complete restoration of nerve *** restriction is also effective for novel clinically approved artificial nerve *** this review,we compare surgical repair techniques primarily for digital nerve injuries reported with relatively high prevalence to be valuable attempts in clinical digital nerve repair and point out their advantages and *** furthermore discuss the use of artificial nerve grafts with a focus on chitosan-based nerve guides,for which our own studies contributed to their approval for clinical *** the second part of this review,very recent future perspectives for the enhancement of tubular(commonly hollow)nerve guides are discussed in terms of their clinical translatability and ability to form three-dimensional constructs that biomimick the natural nerve *** includes materials that have already shown their beneficial potential in in vivo studies like fibrous intraluminal guidance structures,hydrogels,growth factors,and approaches of cell ***,we highlight upcoming future perspectives comprising co-application of stem cell *** our overview,we conclude that already simple attempts are highly effective to increase the regeneration supporting properties of nerve guides in experimental *** for bringing nerve repair with bioartificial nerve grafts to the next level,*** of defects>3 cm in human patients,more complex intraluminal guidance structures such as innovatively manufactured hydrogels and likely supplementation of stem cells or their secretome for therapeutic purposes may represent promising future perspectives.

关键词： bioartificial nerve graft biological nerve graft cell transplantation cellular products luminal structures peripheral nerve repair

Catalyst-modified perovskite hollow fiber membrane for oxidative coupling of methane

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Chinese Journal of Chemical Engineering 2022年第1期35卷 412-419页

作者： Jian Song claudia Li Shao Zhang Xiuxia Meng Bo Meng Jaka Sunarso Department of Chemical Engineering Shandong University of TechnologyZibo 255049China State Key Laboratory of Separation Membranes and Membrane Processes Department of Chemical EngineeringTiangong UniversityTianjin 300387China Research Centre for Sustainable Technologies Faculty of EngineeringComputing and ScienceSwinburne University of TechnologyJalan Simpang Tiga93350 KuchingSarawakMalaysia

The catalytic oxidative cou pling of methane(OCM)to C_(2) hydrocarbons(C_(2)H_(6) and C_(2)H_(4))represents one of the most effective ways to convert natural gas to more useful products,which can be performed effectively using La_(0.6)Sr0.4Co_(0.2)Fe_(0.8)O_(3-δ)(LSCF)perovskite hollow fiber membrane *** this work,the effects of adding a thin BaCe_(0.8)Gd_(0.2)O_(3-δ)(BCG)catalyst film onto the inner LSCF fiber surface as the OCM catalyst and a porous Ba0.5Sr_(0.5)Co_(0.8)Fe_(0.2)O_(3-δ)(BSCF)perovskite layer onto the outer LSCF surface to improve the oxygen permeation were *** 700℃and 1000℃,methane conversion increased in the order of uncoated,BCG and BSCF-coated,and BCG-coated LSCF hollow fiber while Coselectivity and C_(2)-yield increased in the order of BCG and BSCF-coated,uncoated,and BCG-coated LSCF hollow *** permeation flux at the same temperature range,on the other hand,was enhanced in the order of uncoated,BCG-coated,and BCG and BSCF-coated LSCF hollow *** finding demonstrates the complex interplay between oxygen permeation and OCM *** BCG and BSCFcoated hollow fiber was also subjected to thermal cycles between 850℃and 900℃for up to 175 hours during which the fiber showed minor degradation in oxygen permeation fluxes and relatively stable OCM performance.

关键词： Hollow fiber Membrane reactor Oxidative coupling of methane(OCM) Perovskite

Plastic litter in the European Arctic:What do we know?

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Emerging Contaminants 2019年第1期5卷 308-318页

作者： claudia Halsband Dorte Herzke Akvaplan-niva Fram Centre for Climate and the EnvironmentN-9296TromsøNorway The Norwegian Institute for Air Research Fram Centre for Climate and the EnvironmentN-9296TromsøNorway

Despite an exponential increase in available data on marine plastic debris globally,information on levels and trends of plastic pollution and especially microplastics in the Arctic remains *** few available peer-reviewed scientific works,however,point to a ubiquitous distribution of plastic particles in all environmental compartments,including sea ***,we review the current state of knowledge on the sources,distribution,transport pathways and fate of meso-and microplastics with a focus on the European Arctic and discuss observed and projected impacts on biota and ecosystems.

关键词： Arctic Litter Plastic Distribution Biota Ecosystem Review

Systemic treatment of hepatocellular carcinoma:the times they are a-changin’

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Hepatobiliary Surgery and Nutrition 2021年第6期10卷 893-895页

作者： claudia Campani Jean-Charles Nault Centre de Recherche des Cordeliers Sorbonne UniversitéInsermUniversitéde ParisTeam“Functional Genomics of Solid Tumors”ParisFrance Equipe labellisée Ligue Nationale Contre le Cancer Labex OncoImmunologyParisFrance Department of Experimental and Clinical Medicine University of FlorenceFlorenceItaly Service d’Hépatologie Hôpital AvicenneHôpitaux Universitaires Paris-Seine-Saint-DenisAssistance-Publique Hôpitaux de ParisBobignyFrance Unitéde Formation et de Recherche SantéMédecine et Biologie Humaine UniversitéParis 13Communautéd’Universités et Etablissements Sorbonne Paris CitéParisFrance

For a decade,sorafenib remained the only drug approved for the treatment of advanced hepatocellular carcinoma(HCC)due to the failure of several phase III trials in which alternative angiogenesis inhibitors were tested(1).In recent years,the field of systemic treatments of HCC has evolved quickly and a recent position paper of the European Association for the Study of the Liver has well described the current advances in the systemic treatment of advanced HCC as well as the unmet needs in the field(1).First,lenvatinib was approved as an alternative to sorafenib in the first-line setting,and,thus,regorafenib,cabozantinib and ramucirumab as second-line treatments for patients who progressed on sorafenib(1).

关键词： hepatocellular treatment Liver

Crafting Short Screenplays That Connect, Second Edition 2nd ed.

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Molecular mechanisms of liver carcinogenesis related to metabolic syndrome

2005年

作者： claudia H. Johnson

ISBN: (纸本)9780240806419;0240806417

The only screenwriting book that includes a DVD that contains performances of the short films and screenplays that are featured in the book!The beauty and power of any story lies in its ability to connect to the reader, listener, or observer. Crafting Short Screenplays That Connect is the first screenwriting guide to introduce connection as an essential, although essentially overlooked, aspect of creating stories for the screen and of the screenwriting process itself. Written with clarity and humor, this book teaches the craft of writing short screenplays by guiding the student through carefully focused writing exercises of increasing length and complexity. Eight award-winning student screenplays are included for illustration and *** text is divided into three parts. Part one focuses on preparing to write by means of exercises designed to help students think more deeply about the screenwriter's purposes; their own unique vision, material and process; and finally about what screenplays are at their simplest and most profound level--a pattern of human change, created from specific moments of change--discoveries and decisions. Part two teaches students how to craft an effective pattern of human change. It guides them through the writing and re-writing of 'Five (Not So Easy) Pieces'--five short screenplays of increasing length and complexity--focusing on a specific principle of dramatic technique: The Discovery, The Decision, The Boxing Match, The Improbable Connection, and The Long Short Screenplay. Part Three presents the five screenplays used throughout the book to illustrate the dramatic principles that have been discussed, and includes interviews with the screenwriters, a look at where they are now and what they are doing, and brief discussion of how each film evolved. * Groundbreaking book that stresses human connection as the basis of a good screenplay-not conflict* The only screenwriting book that includes a DVD

关键词： Motion picture authorship.

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Hepatoma Research 2022年第1期8卷 22-34页

作者： claudia Campani Jean-Charles Nault Team of Functional Genomics of Solid Tumors Centre de Recherche des CordeliersSorbonne UniversitéInsermUniversitéde ParisParis F-75006France Equipe labellisée Ligue Nationale Contre le Cancer Labex OncoImmunologyParis F-75006France Department of Experimental and Clinical Medicine University of FlorenceFlorence 50139Italy Service d’hépatologie Hôpital AvicenneHôpitaux Universitaires Paris-Seine-Saint-DenisAssistance-Publique Hôpitaux de ParisBobigny 93000France Unitéde Formation et de Recherche SantéMédecine et Biologie Humaine UniversitéParis 13Communautéd’Universités et Etablissements Sorbonne Paris CitéBobigny 93000France

Global prevalence of non-alcoholic fatty liver disease(NAFLD)and of NAFLD-hepatocellular carcinoma(HCC)is estimated to grow in the next *** burden of NAFLD and the evidence that NAFLD-HCC arises also in noncirrhotic patients,explain the urgent need of a better characterization of the molecular mechanisms involved in NAFLD *** and diabetes cause a chronic inflammatory state which favors changes in serum cytokines and adipokines,an increase in oxidative stress,DNA damage,and the activation of multiple signaling pathways involved in cell ***,a role in promoting NAFLD-HCC has been highlighted in the innate and adaptive immune system,dysbiosis,and alterations in bile acids *** dietary,genetic,or combined mouse models have been used to study nonalcoholic steatohepatitis(NASH)development and its progression to HCC,but models that fully recapitulate the biological and prognostic features of human NASH are still *** humans,four single nucleotide polymorphisms(PNPLA3,TM6SF2,GCKR,and MBOAT7)have been linked to the development of both NASH and HCC in cirrhotic and non-cirrhotic patients,whereas HSD17B13 polymorphism has a protective *** addition,higher rates of somatic ACVR2A mutations and a novel mutational signature have been recently discovered in NASH-HCC *** knowledge of the molecular pathogenesis of NAFLD-HCC will be helpful to personalized screening programs and allow for primary and secondary chemopreventive treatments for NAFLD patients who are more likely to progress to HCC.

关键词： Hepatocellular carcinoma mouse model genetic predisposition cirrhosis non-alcoholic fatty liver disease immune system

Helicobacter pylori and cytokine gene variants as predictors of premalignant gastric lesions

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World Journal of Gastroenterology 2019年第30期25卷 4105-4124页

作者： Anca Negovan Mihaela Iancu Emoke Fulop claudia Banescu Department of Clinical Science-Internal Medicine University of MedicinePharmacySciences and Technology of Targu Mure.Mure.540139Romania Department of Medical Informatics and Biostatistics “Iuliu Ha.ieganu”University of Medicine and PharmacyCluj-NapocaCluj 400349Romania Department of Morphological Sciences HistologyUniversity of MedicinePharmacySciences and Technology of Targu Mure.Mure.540139Romania Genetics Laboratory Center for Advanced Medical and Pharmaceutical ResearchUniversity of MedicinePharmacySciences and Technology of Targu Mure.Mure.540139Romania

Gastric cancer remains the third leading cause of mortality from cancer worldwide and carries a poor prognosis,due largely to late *** importance of the interaction between Helicobacter pylori(***)infection,the main risk factor,and host-related genetic factors has been studied intensively in recent *** genetic predisposition for non-hereditary gastric cancer is difficult to assess,as neither the real prevalence of premalignant gastric lesions in various populations nor the environmental risk factors for cancer progression are clearly *** non-cardiac intestinal-type cancer,identifying the factors that modulate the progression from inflammation toward cancer is crucial in order to develop preventive *** role of cytokines and their gene variants has been questioned in regard to non-self-limiting *** gastritis and its evolution to gastric atrophy and intestinal metaplasia;the literature now includes various and non-conclusive results on this *** influence of the majority of cytokine single nucleotide polymorphisms has been investigated for gastric cancer but not for preneoplastic gastric *** the investigated gene variants onlyIL10T-819C,IL-8-251,IL-18RAP917997,IL-22 rs1179251,IL1-B-511,IL1-B-3954,IL4R-398 and IL1RN were identified as predictors for premalignant gastric lesions *** of the most important limiting factors is the inhomogeneity of the studies(e.g.,the lack of data on concomitant *** infection,methods used to assess preneoplastic lesions,and source population).Testing the modifying effect of *** infection upon the relationship between cytokine gene variants and premalignant gastric lesions,or even testing the interaction between *** and cytokine gene variants in multivariable models adjusted for potential covariates,could increase generalizability of results.

关键词： Helicobacter pylori Gastritis Premalignant Glandular atrophy Intestinal metaplasia Single-nuclear polymorphism Gene variants Interleukins

Improvement of carbon fiber surface properties using electron beam irradiation

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Nuclear Science and Techniques 2007年第1期18卷 39-41页

作者： Eddy Segura PINO Luci Diva Brocardo MACHADO claudia GIOVEDI Instituto de Pesquisas Energéticas e Nucleares-IPEN/CNEN-SP Av.Prof.Lineu Prestes2242Cidade Universitária05508-000Sāo PauloSP-Brazil Centro Tecnológico da Marinha em Sāo Paulo Av.Prof.Lineu Prestes2468Cidade Universitária05508-000Sāo PauloSP-Brazil

Carbon fiber-reinforced advance composites have been used for structural applications,mainly on account of their mechanical *** main factor for a good mechanical performance of carbon fiber-reinforced com- posite is the interfacial interaction between its components,which are carbon fiber and polymeric *** aim of this study is to improve the surface properties of the carbon fiber using ionizing radiation from an electron beam to obtain better adhesion properties in the resultant *** radiation was applied on the carbon fiber itself before preparing test specimens for the mechanical *** results showed that EB irradiation improved the ten- sile strength of carbon fiber *** maximum value in tensile strength was reached using doses of about 250 *** breakage,the morphology aspect of the tensile specimens prepared with irradiated and non-irradiated car- bon fibers were *** micrographs showed modifications on the carbon fiber surface.

关键词：碳纤维表面性质电子束辐射改性

Effect of light on seed germination and seedling shape of succulent species from mexico

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Journal of Plant Ecology 2016年第2期9卷 174-179页

作者： Joel Flores claudia González-Salvatierra Enrique Jurado División de Ciencias Ambientales Instituto Potosino de Investigación Científica y TecnológicaA.C.Camino a la Presa de San José2055Col.Lomas4SecciónSan Luis PotosíSan Luis Potosí78216México Facultad de Ciencias Forestales Universidad Autónoma de Nuevo LeónCarretera Nacionalkm 145LinaresN.L.67700México

Aims Light requirements for cactus seed germination have been considered to be associated with their adult plant height and seed mass,but this has not been thoroughly studied for other succulent *** order to understand seed photosensitivity from desert species belonging to Asparagaceae(subfamily Agavoideae)and Cactaceae,we performed a germination experiment with and without light for 12 species and 2 varieties from 1 species from the Southern Chihuahuan *** also determined if adult growth is totally determined by seedling‘growth form’in *** We performed a germination experiment using light and darkness for 13 species from Southern Chihuahuan Desert:10 rosette species(Asparagaceae),as well as 1 globose,1 columnar and 2 varieties from 1 depressed-globose species(Cactaceae).The response variables were seed germination percentage and relative light germination(RLG).In addition,in order to determine if adult-globose cacti could have cylindrical seedlings,we calculated the shape index(height/width ratio)for Coryphanta clavata and Mammillaria *** Findings All species were considered neutral *** species had similar seed germination in both light and dark conditions,and three taxa(*** and the two varieties of Ferocactus latispinus)showed higher germination with light than without *** salmiana,*** and the two varieties of *** had higher RLG than the other *** mass was an important factor because with higher seed mass there was lower dependence to *** findings support the hypothesis that small seed mass and light requirements have coevolved as an adaptation to ensure *** adult-globose cactus species,***,and one adult-columnar species,***,had small seeds and neutral *** from these two species exposed to light were cylindrical and those under darkness conditions were *** seeds from this species are able to germinate in

关键词： Asparagaceae Cactaceae Chihuahuan Desert photoblasticism seed germination succulent plants