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Production of pectic extracts from sugar beet pulp with antiproliferative activity on a breast cancer cell line

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Frontiers of Chemical Science and Engineering 2013年第4期7卷 482-489页

作者： Jacqueline CONCHA caroline WEINSTEIN Maria Elvira ZUNIGA Department of Biochemistry Pharmacy School Universidad de Valparaiso Gran Bretafia 1093 Playa Ancha Valparaiso Chile School of Biochemistry Engineering Pontificia Universidad Catolica de Valparaiso General Cruz 34 Valparaiso Chile Creas Conicyt-Regional Gore Region de Valparaiso R12C1001 Blanco 1623 of 1402 Valparaiso Chile

In the last years, sugar beet pectins have been the subject of several investigations involving extraction methodologies, chemical composition and functional properties. The structure of pectins, which depends on the extraction method, is decisive in their capacity to induce apoptosis on several cancer cell lines like colon, prostate and breast. In this work, sugar beet pectin extraction was performed in the following steps： lipid extraction with hexane, removal of soluble complex carbohydrates and proteins, and enzymatic treatment with amyloglucosidase, protease, and pectinase. The enzymatic treatment was carried out with Rohapect DA6L under the following conditions： 50℃, pH 4.0, 2% enzyme/substrate （E/S） ratio, 15 h, and a solid to liquid ratio of 1 ： 10. The pectic extract showed a degree of polymerization （DP） profile of 55.8% with DP≥7; 4.9% with DP6; 5.8% between DP2 and DP6 ; 4.7% with DP2; and 28.8% with DP1. The pectic extract was examined for its antiproliferative activity on the MCF-7 breast cancer cell line. At a concentration range of 12.5-25 mg/mL the pectic extract killed 80.6% of the cells, exhibiting a higher antiproliferative activity than 4-hydroxytamoxifen （4- OHT）, a classical anticancer drug, which killed 56.5% of the cells.

关键词： pectic extracts antiproliferative activity,breast cancer enzymatic treatment

Effect of thermo-mechanical conditions during constrained friction processing on the particle refinement of AM50 Mg-alloy phases

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Journal of Magnesium and Alloys 2024年第6期12卷 2298-2311页

作者： Camila caroline de Castro AndréMartins Neves Benjamin Klusemann Helmholtz-Zentrum Hereon Institute of Material and Process DesignSolid-State Materials Processing21502 GeesthachtGermany Helmholtz-Zentrum Hereon Institute of Hydrogen TechnologySystem Design for Mobility21502 GeesthachtGermany Helmut Schmidt University/University of the German Federal Armed Forces Hamburg Department of Mechanical and Civil Engineering22043 HamburgGermany Leuphana University Lüneburg Institute for Production Technology and Systems21335 LüneburgGermany

Constrained Friction Processing(CFP)is a novel solid-state processing technique suitable for lightweight materials,such Mg-and *** technique enables grain size refinement to fine or even ultrafine *** this study,the effect of CFP on the microstructural refinement of AM50 rods is investigated in terms of particle size and morphology of the eutectic and secondary phases originally present in the base material,in particular the eutecticβ-Mg_(17)Al_(12)and Al-Mn *** that purpose,as-cast and solution heat-treated base material and processed samples were *** Al_(8)Mn_(5) intermetallic phase was identified as the main secondary phase present in all samples before and after the processing.A notorious refinement of these particles was observed,starting from particles with an average equivalent length of a few micrometers to around 560 nm after the *** refinement of the secondary phase refinement is attributed to a mechanism analogous to the attrition comminution,where the combination of temperature increase and shearing of the material enables the continuous breaking of the brittle intermetallic particles into smaller *** for the eutectic phase,the results indicate the presence of the partially divorcedβ-Mg_(17)Al_(12)particles exclusively in the as-cast base material,indicating that no further phase transformations regarding the eutectic phase,such as dynamic precipitation,occurred after the *** the case of the processed as-cast material analyzed after the CFP,the thermal energy generated during the processing led to temperature values above the solvus limit of the eutectic phase,which associated with the mechanical breakage of the particles,enabled the complete dissolution of this ***,CFP was successfully demonstrated to promote an extensive microstructure refinement in multiple aspects,in terms of grain sizes of theα-Mg phase and presence and morphology of the Al-Mn and eutecticβ-Mg_(17)Al_(12).

关键词： Constrained friction processing AM50 Refill friction stir spot welding Extrusion β-Mg_(17)Al_(12) Al-Mn phases

Fish trader’s gender and niches in a declining coral reef fishery:implications for sustainability

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Ecosystem Health and Sustainability 2017年第6期3卷 10-30页

作者： Timothy R.McClanahan caroline Abunge Wildlife Conservation Society Marine ProgramsBronxNYUSA Wildlife Conservation Society Marine ProgramsCoral Reef Conservation ProjectMombasaKenya

Introduction:The state of natural resources is greatly influenced by market ***,resource trader's incentives,decisions,and willingness to comply with manage-ment an influence efforts to achieve sustainabi ***'s impacts will depend on their economic niches,which are influenced by cultural norms,skill,social relationshi ps,profitability,and the spatial scale of ***,we examined the potential of traders to influence fisheries'sustainability by evaluating their jobs,gender roles,religion,socioeconomic status,association and perceptions of management systems,and future *** studied 142 traders in 19 Kenyan coral reef fisheries landing sites distributed among four gear management ***:We found a strong role of gender,geography,and religion in the participation of these fisheries that was primarily driven by fisheries'*** associations suggest that overfished fisheries should retain traders with low education,capital,and savings-often women;whereas sustainable stocks favor the opposite characteristics,and often ***:Therefore,managing for increasing yields,profits,and sustainability could exclude women traders unless they successfully access or adopt the more traditional male economic *** coexistence is most likely to be achieved by managing for inter-mediate resource levels where net production,catch,and fish body size diversity are ***,reducing risk and increasing the capital and mobility of women traders should reduce their chances of exclusion when fisheries are sustainable.

关键词： Common pool resources equity political ecology resource competition gender roles social disparity

Endometrial mesenchymal stem cells as a cell based therapy for pelvic organ prolapse

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World Journal of Stem Cells 2016年第5期8卷 202-215页

作者： Stuart J Emmerson caroline E Gargett the Ritchie Centre Hudson Institute of Medical Research Department of Obstetrics and Gynaecology Monash University

Pelvic organ prolapse(POP) occurs when the pelvic organs(bladder, bowel or uterus) herniate into the vagina, causing incontinence, voiding, bowel and sexual dysfunction, negatively impacting upon a woman's quality of life. POP affects 25% of all women and results from childbirth injury. For 19% of all women, surgical reconstructive surgery is required for treatment, often augmented with surgical mesh. The surgical treatment fails in up to 30% of cases or results in adverse effects, such as pain and mesh erosion into the bladder, bowel or vagina. Due to these complications the Food and Drug Administration cautioned against the use of vaginal mesh and several major brands have been recently been withdrawn from market. In this review we will discuss new cell-based approaches being developed for the treatment of POP. Several cell types have been investigated in animal models, including a new source of mesenchymal stem/stromal cells(MSC) derived from human endometrium. The unique characteristics of endometrial MSC, methods for their isolation and purification and steps towards their development for good manufacturing practice production will be described. Animal models that could be used to examine the potential for this approach will also be discussed as will a rodent model showing promise in developing an endometrial MSC-based therapy for POP. The development of a preclinical large animal model for assessing tissue engineering constructs for treating POP will also be mentioned.

关键词： Endometrium Mesenchymal stem cells Endometrial mesenchymal stem cells Pelvic organ prolapse Mesh Tissue engineering Regenerative medicine

SCHOOL DIFFICULTIES in Children Cancer Survivors: A Narrative Review and a Teacher Point-of-View

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Psycho-Oncologie 2024年第2期18卷 109-115页

作者： Fanny Delehaye caroline Fayet Julien Lejeune Department of Medicine University of CaenCaen14000France Department of Pediatric Oncology University Hospital of CaenCaen14000France Laboratory“ANTICIPE”UNIT U1086 INSERM Caen14000France Department of Pediatric Oncology Clocheville University HospitalTours37000France

School difficulties are common in children cancer survivors and may be prognostic for the success of the patient social reintegration after the ***,we carry out a narrative review of the literature from 2001 to 2022 to assess the school difficulties of these patients,the predictive factors of these difficulties,and the possible long-term *** punctuate this review the practical point-of-view of a teacher dedicated to our hospital,who works with children with chronic diseases such as ***,we expose possible barriers and solutions to improve the scholar reintegration and limit the impact of cancer on the academic achievement.

关键词： Cancer children school

Revisiting the liver’s role in transplant alloimmunity

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World Journal of Gastroenterology 2019年第25期25卷 3123-3135页

作者： Nitin Abrol caroline C Jadlowiec Timucin Taner William J.von Liebig Center for Transplantation and Clinical Regeneration Massyo ClinicRochesterMN 55905United States Transplant Center Mayo ClinicPhoenixAZ 85259United States

The transplanted liver can modulate the recipient immune system to induce tolerance after *** phenomenon was observed nearly five decades ***,the liver’s role in multivisceral transplantation was recognized,as it has a protective role in preventing rejection of simultaneously transplanted solid organs such as kidney and *** liver has a unique architecture and is home to many cells involved in immunity and *** transplantation,these cells migrate from the liver into the *** studies identified chimerism as an important mechanism by which the liver modulates the human immune *** studies on human T-cell subtypes,cytokine expression,and gene expression in the allograft have expanded our knowledge on the potential mechanisms underlying *** this article,we discuss the privileged state of liver transplantation compared to other solid organ transplantation,the liver allograft’s role in multivisceral transplantation,various cells in the liver involved in immune responses,and the potential mechanisms underlying immunomodulation of host alloresponses.

关键词： Liver transplantation Alloimmunity Liver-kidney transplant Tolerance Rejection

Design methods for antimicrobial peptides with improved performance

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Zoological Research 2023年第6期44卷 1095-1114页

作者： James Mwangi Peter Muiruri Kamau Rebecca caroline Thuku Ren Lai Key Laboratory of Bioactive Peptides of Yunnan Province Engineering Laboratory of Peptides of Chinese Academy of SciencesKIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common DiseasesNational Resource Centre for Non-Human PrimatesKunming Primate Research CentreNational Research Facility for Phenotypic&Genetic Analysis of Model Animals(Primate Facility)Sino-African Joint Research CentreNew Cornerstone Science InstituteKunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650107China Centre for Evolution and Conservation Biology Southern Marine Science and Engineering Guangdong LaboratoryGuangzhouGuangdong 511458China Kunming College of Life Science University of Chinese Academy of SciencesKunmingYunnan 650204China

The recalcitrance of pathogens to traditional antibiotics has made treating and eradicating bacterial infections more *** this regard,developing new antimicrobial agents to combat antibiotic-resistant strains has become a top *** peptides(AMPs),a ubiquitous class of naturally occurring compounds with broadspectrum antipathogenic activity,hold significant promise as an effective solution to the current antimicrobial resistance(AMR)*** AMPs have been identified and evaluated for their therapeutic application,with many already in the drug development *** distinct properties,such as high target specificity,potency,and ability to bypass microbial resistance mechanisms,make AMPs a promising alternative to traditional ***,several challenges,such as high toxicity,lability to proteolytic degradation,low stability,poor pharmacokinetics,and high production costs,continue to hamper their clinical ***,recent research has focused on optimizing the properties of AMPs to improve their *** understanding the physicochemical properties of AMPs that correspond to their activity,such as amphipathicity,hydrophobicity,structural conformation,amino acid distribution,and composition,researchers can design AMPs with desired and improved *** this review,we highlight some of the key strategies used to optimize the performance of AMPs,including rational design and de novo *** also discuss the growing role of predictive computational tools,utilizing artificial intelligence and machine learning,in the design and synthesis of highly efficacious lead drug candidates.

关键词： Antimicrobial resistance Antimicrobial peptides Design methods Peptidomimetics Artificial intelligence

Synthesis and purification of long copper nanowires. Application to high performance flexible transparent electrodes with and without PEDOT：PSS

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Nano Research 2014年第3期7卷 315-324页

作者： Celine Mayousse caroline Celle Alexandre Carella Jean-Pierre Simonato CEA LITEN / DTNM / LCRE 17 rue des Martyrs 38054 Grenoble France

We demonstrate the hydrothermal synthesis of long copper nanowires based on a simple protocol. We show that the purification of the nanowires is very important and can be achieved easily by wet treatment with glacial acetic acid. Fabrication of random networks of purified copper nanowires leads to flexible transparent electrodes with excellent optoelectronic performances （e.g., 55 Ω/sq. at 94% transparency）. The process is carried out at room temperature and no post-treatment is necessary. Hybrid materials with the conductive polymer PEDOT：PSS show similar properties （e.g., 46 Ω/sq, at 93% transparency）, with improved mechanical properties. Both electrodes were integrated in capacitive touch sensors.

关键词： copper nanowires transparent electrodes PEDOT:PSS touch sensor metallic nanowires

Human Performance in Critical Scenarios as a Benchmark for Highly Automated Vehicles

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Automotive Innovation 2021年第3期4卷 274-283页

作者： Laura Quante Meng Zhang Katharina Preuk caroline Schießl Institute of Transportation Systems German Aerospace Center(DLR e.V.)Lilienthalplatz 738108 BraunschweigGermany

Before highly automated vehicles(HAVs)become part of everyday traffic,their safety has to be *** use of human performance as a benchmark represents a promising approach,but appropriate methods to quantify and compare human and HAV performance are *** adapting the method of constant stimuli,a scenario-based approach to quantify the limit of(human)performance is *** method is applied to a driving simulator study,in which participants are repeatedly confronted with a cut-in manoeuvre on a *** systematically manipulating the criticality of the manoeuvre in terms of time to collision,humans’collision avoidance performance is *** limit of human performance is then identified by means of logistic *** calculated regression curve and its inflection point can be used for direct comparison of human and HAV ***,the presented approach represents one means by which HAVs’safety performance could be proven.

关键词： Highly automated vehicles Automated driving Proof of safety Human performance Driving performance