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Doublecortin-like kinase 1 exhibits cancer stem cell-like characteristics in a human colon cancer cell line

Chinese Journal of Cancer Research 2013年第2期25卷 134-142页

作者： Lianna Li charles f. Bellows Department of Surgery Tulane University University of Mississippi Cancer Institute

Objective： Colon cancer stem cells （CSCs） are implicated in colorectal cancer carcinogenesis, metastasis, and therapeutic resistance. The identification of these cells could help to develop novel therapeutic strategies. Doublecortin-like kinase 1 （DCLK1） has been viewed as a marker for gastrointestinal stem cells that fuel the self-renewal process, however others view them as a marker of Tuft cells or as an enteroendocrine subtype. The purpose of this study was to use a colon cancer cell line to identify and characterize the stem-like characteristics of the DCLKI＋ cell population. Methods： To enrich stem-like cells, HCT116 cells （derived from colon adenocarcinomas） were cultured using serum-free media to form spheres under both normal oxygen and hypoxia condition. DCLK1 transcript expression in the adherent parental cells and spheroids was quantified using quantitative real time reverse transcription- polymerase chain reaction [（q）RT-PCR]. DCLK1 protein expression was determined using flow cytometry. Self-renewal capability from adherent parental cells and spheroids was determined using extreme limiting dilution analysis （ELDA）. Results： Under both normal oxygen and hypoxia condition, the adherent parental cells were composed of cells that express low levels of DCLK1. However, spheroids exhibited an increased frequency of cells expressing DCLK1 on both mRNA and protein levels. Cells derived from spheroids also possess stronger self-renewal capability. Conclusions： The higher fraction of DCLK1 ＋ cells exhibited by spheroids and hypoxia reflects the stem- like characteristics of these cells. DCLK1 may represent an ideal marker to study and develop effective strategies to overcome chemo-resistance and relapse of colon cancer.

关键词： Doublecortin-like kinase 1 (DCLK1) colorectal cancer cancer stem cells stem cell marker spheroids

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Current laser therapy options for endoscopic treatment of upper tract urothelial carcinoma

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Current Urology 2023年第1期17卷 62-67页

作者： Benjamin W.Zollinger Ezra J.Shoen charles f.Gresham Michael J.Whalen George Washington School of Medicine and Health Sciences WashingtonDCUSA Department of Urology Icahn School of MedicineMount Sinai HospitalNew YorkNYUSA Department of Urology George Washington University HospitalWashingtonDCUSA

Endoscopic management via retrograde ureteroscopic laser ablation of upper tract urothelial carcinoma(UTUC)has become the preferred treatment modality for low-risk *** most popular ablative lasers over the past 15-20 years have been the holmium:yttrium-aluminum-garnet(Ho∶YAG)and neodymium(Nd∶YAG)lasers,but recently the thulium(Th∶YAG)laser has emerged as a potential *** review compares the mechanism of action,physiological properties and effects,and oncologic outcomes of Ho∶YAG/Nd∶YAG lasers versus the Th∶YAG laser for UTUC *** advantages of the Th∶YAG laser over existing technologies are outlined,followed by a discussion of emerging laser technologies in UTUC management.

关键词： Endoscopic management Holmium laser Laser ablation Thulium laser Upper tract urothelial carcinoma

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Investigation of Single and Multiple Mutations Prediction Using Binary Classification Approach

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Intelligent Automation & Soft Computing 2023年第4期36卷 1189-1203页

作者： T.Edwin Ponraj J.charles Department of Computer Applications Noorul Islam Centre for Higher EducationKumaracoil629180India Department of Software Engineering Noorul Islam Centre for Higher EducationKumaracoil629180India

The mutation is a critical element in determining the proteins’stability,becoming a core element in portraying the effects of a drug in the pharmaceutical *** wet laboratory tests to provide a better perspective on protein mutations is expensive and time-intensive since there are so many potential muta-tions,computational approaches that can reliably anticipate the consequences of amino acid mutations are *** work presents a robust methodology to analyze and identify the effects of mutation on a single protein ***,the context in a collection of words is determined using a knowledge graph for feature selection *** proposed prediction is based on an easier and sim-pler logistic regression inferred binary classiﬁcation *** approach can able to obtain a classiﬁcation accuracy(AUC)Area Under the Curve of 87%when randomly validated against experimental energy ***,for each cross-fold validation,the precision,recall,and f-Score are *** results support the validity of our strategy since it performs the vast majority of prior studies in this domain.

关键词： Proteins data science mutation analysis random forest neighbor proteins single and double mutations

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STRATEGIES　Of　MYOCARDIAL　PROTECTION　DURING　CARDIAC　SURGERY

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Chinese Medical Journal 1996年第12期109卷 8-13页

作者： charles C.Hsi Rusel f.Stahl Division of Cardiothoracic Surgery University of Massachusetts Medical Center Worcester Massachusetts

ＳＴＲＡＴＥＧＩＥＳＯＦＭＹＯＣＡＲＤＩＡＬＰＲＯＴＥＣＴＩＯＮＤＵＲＩＮＧＣＡＲＤＩＡＣＳＵＲＧＥＲＹＣｈａｒｌｅｓＣ．Ｈｓｉ，ａｎｄＲｕｓｅｌＦ．ＳｔａｈｌＩｎｔｒｏｄｕｃｔｉｏｎａｎｄｈｉｓｔｏｒｙ．Ｔｈｅａｂ... 详细信息

ＳＴＲＡＴＥＧＩＥＳＯＦＭＹＯＣＡＲＤＩＡＬＰＲＯＴＥＣＴＩＯＮＤＵＲＩＮＧＣＡＲＤＩＡＣＳＵＲＧＥＲＹＣｈａｒｌｅｓＣ．Ｈｓｉ，ａｎｄＲｕｓｅｌＦ．ＳｔａｈｌＩｎｔｒｏｄｕｃｔｉｏｎａｎｄｈｉｓｔｏｒｙ．Ｔｈｅａｂｉｌｉｔｙｔｏｐｅｒｆｏｒｍｃｏｍ...

关键词： BLOOD CARDIOPLEGIA ADENOSINE CATABOLISM RECOVERY ISCHEMIA HEARTS WARM fLOW

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Parastomal hernia repair

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Plastic and Aesthetic Research 2022年第1期9卷 402-412页

作者： Jeffrey Michael Smith Sahil K.Kapur Alexander f.Mericli Donald P.Baumann charles E.Butler Department of Plastic Surgery The University of Texas MD Anderson Cancer CenterHoustonTX 77030USA Department of Surgery Division of Plastic SurgeryThe University of Texas Medical BranchGalvestonTX 77555USA

Despite significant advances in abdominal wall reconstruction,parastomal hernias remain a complex problem,with a high risk of recurrence following *** a number of surgical hernia repair techniques have been proposed,there is no consensus on optimal *** clinical variables must be considered when developing a comprehensive repair plan that minimizes the likelihood of hernia recurrence and surgical site *** this review,we describe the incidence of parastomal hernias and discuss pertinent risk factors,medical history findings,physical examination findings,supplementary diagnostic modalities,parastomal hernia classification systems,surgical indications,and repair *** consideration is given to the discussion of mesh reinforcement,including available biomaterials,anatomic plane selection,and the extent of mesh *** open repairs are the primary focus of this article,minimally invasive laparoscopic and robotic approaches are also briefly *** is our hope that the provided surgical outcome data will help guide surgical management and optimize outcomes for affected patients.

关键词： Abdominal wall reconstruction parastomal hernia stoma biologic mesh synthetic mesh polypropylene acellular dermal matrix

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High efficacy of chlorfenapyr-based net Interceptor■G2 against pyrethroid-resistant malaria vectors from Cameroon

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Infectious Diseases of Poverty 2023年第4期12卷 1-16页

作者： Magellan Tchouakui Riccado f.Thiomela Elysee Nchoutpouen Benjamin D.Menze Cyrille Ndo Dorothy Achu Raymond N.Tabue flobert Njiokou Ateba Joel charles S.Wondji Centre for Research in Infectious Diseases(CRID) P.O.Box 13501YaoundéCameroon Department of Animal Biology and Physiology Faculty of ScienceUniversity of Yaoundé1P.O.Box 812YaoundéCameroon Department of Biological Sciences Faculty of Medicine and Pharmaceutical SciencesUniversity of DoualaP.O.Box 24157DoualaCameroon Ministry of Public Health National Malaria Control ProgrammeP.O.Box 14386YaoundeCameroon Department of Vector Biology Liverpool School of Tropical MedicinePembroke PlaceLiverpoolL35QAUK International Institute of Tropical Agriculture(IITA) P.O.Box 2008YaoundéCameroon

Background The increasing reports of resistance to pyrethroid insecticides associated with reduced efficacy of pyrethroid-only interventions highlight the urgency of introducing new non-pyrethroid-only control ***,we investigated the performance of piperonyl-butoxide(PBO)-pyrethroid[Permanet 3.0(P3.0)]and dual active ingredients(AI)nets[Interceptor G2(IG2):containing pyrethroids and chlorfenapyr and Royal Guard(RG):containing pyrethroids and pyriproxyfen]compared to pyrethroid-only net Royal Sentry(RS)against pyrethroid-resistant malaria vectors in *** The efficacy of these tools was firstly evaluated onAnopheles gambiae *** funestus *** Gounougou,Mibellon,Mangoum,Nkolondom,and Elende using cone/tunnel *** addition,experimental hut trials(EHT)were performed to evaluate the performance of unwashed and 20 times washed nets in semi-field ***,pyrethroid-resistant markers were genotyped in dead vs alive,blood-fed vs unfed mosquitoes after exposure to the nets to evaluate the impact of these markers on net *** XLSTAT software was used to calculate the various entomological outcomes and the Chi-square test was used to compare the efficacy of various *** odds ratio and fisher exact test were then used to establish the statistical significance of any association between insecticide resistance markers and bed net *** Interceptor G2 was the most effective net against wild *** followed by Permanet *** EHT,this net induced up to 87.8%mortality[95%confidence interval(CI):83.5-92.1%)and 55.6%(95%CI:48.5-62.7%)after 20 washes whilst unwashed pyrethroid-only net(Royal Sentry)killed just 18.2%(95%CI:13.4-22.9%)of *** unwashed Permanet 3.0 killed up to 53.8%(95%CI:44.3-63.4%)of field-resistant mosquitoes and 47.2%(95%CI:37.7-56.7%)when washed 20 times,and the Royal Guard 13.2%(95%CI:9.0-17.3%)for unwashed net and 8.5%(95%CI:5.7-11.4%)for t

关键词： Malaria Anopheles Insecticide resistance Dual active ingredient nets Interceptor G2

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Molecular mechanisms of liver carcinogenesis related to metabolic syndrome

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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

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An Ensemble-Based Hotel Reviews System Using Naive Bayes Classifier

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Computer Modeling in Engineering & Sciences 2023年第10期137卷 131-154页

作者： Joseph Bamidele Awotunde Sanjay Misra Vikash Katta Oluwafemi charles Adebayo Department of Computer Science Faculty of Information and Communication SciencesUniversity of IlorinIlorin240003Nigeria Department of Computer Science and Communication Otfold University CollegeHaldenNorway

The task of classifying opinions conveyed in any form of text online is referred to as sentiment *** emergence of social media usage and its spread has given room for sentiment analysis in our daily *** media applications and websites have become the foremost spring of data recycled for reviews for sentimentality in various *** subject matter can be encountered on social media platforms,such as movie product reviews,consumer opinions,and testimonies,among others,which can be used for sentiment *** rapid uncovering of these web contents contains divergence of many benefits like profit-making,which is one of the most vital of them *** to a recent study,81%of consumers conduct online research prior to making a *** the reviews available online are too huge and numerous for human brains to process and ***,machine learning classifiers are one of the prominent tools used to classify sentiment in order to get valuable information for use in companies like hotels,game companies,and so *** the sentiments of people towards different commodities helps to improve the services for contextual promotions,referral systems,and market ***,this study proposes a sentiment-based framework detection to enable the rapid uncovering of opinionated contents of hotel reviews.A Naive Bayes classifier was used to process and analyze the dataset for the detection of the polarity of the *** dataset from Datafiniti’s Business Database obtained from Kaggle was used for the experiments in this *** performance evaluation of the model shows a test accuracy of 96.08%,an f1-score of 96.00%,a precision of 96.00%,and a recall of 96.00%.The results were compared with state-of-the-art classifiers and showed a promising performance andmuch better in terms of performancemetrics.

关键词： Sentiment analysis hotel reviews Naive Bayes algorithm consumer opinions web 2.0 machine learning

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Deformation induced decoupling between U-Pb and trace elements in titanite revealed through petrochronology and study of localized deformation

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Geoscience frontiers 2023年第2期14卷 217-240页

作者： charles Kavanagh-Lepage félix Gervais Kyle Larson Riccardo Graziani Abdelali Moukhsil Département des génies civils géologiques et des minesPolytechnique MontréalMontréal H3T 1J4QuébecCanada Earth and Environmental Sciences IKBSASUniversity of British Columbia Okanagan3247 University WayKelownaBC V1V 1V7Canada Natural Resources Canada Government of Canada601 Booth St.OttawaON K1A 0E8Canada Direction de l’acquisition des connaissances géoscientifiques Ministère de l’Énergie et des Ressources naturelles du Québec57004e Avenue Ouest QuébecQC G1H 6R1QuébecCanada

In this contribution,we analyzed a pair of mafic samples collected from a recently identified shear zone and its proximal footwall from the Manicouagan Imbricate Zone(MIZ)of the central Grenville Province,Québec,*** petrochronology,metamorphic phase equilibria modelling,trace element thermometry,and electron backscattered diffraction data were used to define a Pressure-Temperature-timeDeformation path for the two *** interconnected dislocation network within titanite grains,as outlined with Kerneled Average Misorientation maps,are spatially correlated with variation in the U-Pb system but not with that observed for trace element These results suggest that the U-Pb system was decoupled from trace and rare earth elements and that deformation,rather than interface-coupled dissolution-precipitation reactions or re-crystallisation,was the main driver for this *** addition to highlighting a potential pitfall of titanite petrochronology,our P-T-t-D path reveals that ductile shear zones were active later than previously suggested within the MIZ.

关键词： Titanite petrochronology U-Pb Geochronology Phase equilibria modelling Trace elements Deformation Decoupling

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The evolution of Hessian fly from the Old World to the New World： Evidence from molecular markers

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Insect Science 2015年第6期22卷 768-784页

作者： Brandon J. Schemerhom Yan Ma Crane charles f. Crane USDA-ARS Department of Entomology Department of Botany and Plant Pathology Purdue University West Lafayette IN 47907USA

Eighteen polymorphic microsatellite loci and 11 single-nucleotide polymor- phisms were genotyped in 1 095 individual Hessian fly specimens representing 23 popula- tions from North America, southern Europe, and southwest Asia. The genotypes were used to assess genetic diversity and interrelationship of Hessian fly populations. While phyloge- netic analysis indicates that the American populations most similar to Eurasian populations come from the east coast of the United States, genetic distance is least between （Alabama and California） and （Kazakhstan and Spain）. Allelic diversity and frequency vary across North America, but they are not correlated with distance from the historically documented point of introduction in New York City or with temperature or precipitation. Instead, the greatest allelic diversity mostly occurs in areas with Mediterranean climates. The mi- crosatellite data indicate a general deficiency for heterozygotes in Hessian fly. The North American population structure is consistent with multiple introductions, isolation by dis- tance, and human-abetted dispersal by bulk transport of puparia in infested straw or on harvesting equipment.

关键词： allele frequency Hessian fly microsatellite population structure SNP SSR

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