检索结果-南通市图书馆

Molecular analysis of γ1, γ3, and α class switch recombination junctions in APOBEC3-deficient mice using high-throughput sequencing

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Cellular & Molecular Immunology 2020年第4期17卷 418-420页

作者： Hussein Issaoui Mélissa Ferrad Nour Ghazzaui Sandrine Lecardeur jeanne cook-moreau François Boyer Yves Denizot UMR CNRS 7276 INSERM U1262Equipe Labellisée LIGUE 2018University of LimogesCBRSrue Pr.Descottes87025 LimogesFrance

Activation-induced deaminase(AID)is required for immunoglobulin(Ig)class switch recombination(CSR),in which the constant(C)μgene of IgM is substituted with C_(γ),C_(ε),or C_(α),thereby generating IgG,IgE,and IgA antibodies,respectively,with new effector functions but the same antigenic specificity.1 AID targets specific DNA switch(S)regions preceding C regions except for Cδ.2 Sμis usually the donor region,while Sγ,ε,αare the acceptor *** deaminates C into U on single-stranded DNA by targeting the WRCY(W=A/T,R=A/G,and Y=C/T)hot motif and,to a lesser extent,the SYC(S=G/C,Y=C/T)cold motif.3,4 AID is a member of the apolipoprotein B editing complex(APOBEC)*** APOBEC genes,a family of evolutionarily conserved cytidine deaminases,APOBEC3 is implicated in diverse cell functions including innate immunity against retroviruses.4 The DNA-editing APOBEC3 enzymes have recently attracted attention due to their involvement in cancer and potential applications in gene editing.5–7 While a single copy of each APOBEC3 gene is present in rodents,seven copies of each APOBEC3 gene are found in humans.

关键词： immunity involvement thereby

Mediator contributes to IgH locus VDJ rearrangements by promoting usage of most distal V segments

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Cellular & Molecular Immunology 2020年第4期17卷 407-409页

作者： Iman Dalloul Zeinab Dalloul Sandrine Le Noir François Boyer Bernardo Reina-San-Martin jeanne cook-moreau Michel Cogné UMR CNRS 7276 INSERM U1262Universite de LimogesLimoges 87025France INSERM U1258 UMR CNRS 7104Institut de Genetique et de Biologie Moleculaire et CellulaireUniversitéde StrasbourgIllkirch 67400France

INTRODUCTION The immunoglobulin heavy(IgH)chain locus includes a large cluster of V,D and J segments spanning thousands of kilobases in mammals and its expression implies long-range 3D-regulation of various gene modifications.1 V(D)J recombination occurs during early B-cell ontogeny.2 It is regulated by multiple transcription factors and cis-regulatory elements,and most notably by the intronic 5′Eμelement located in the JH to Cμintron.3 The intergenic control region 1(IGCR1)located between the VH and D gene clusters inhibits rearrangement of the most DH-proximal VH gene segments,while promoting usage of distal VH gene segments.4 Other downstream elements of the locus,flanking its 3′end might have more subtle roles:while the large 3′regulatory region(3′RR)shows strong internal synergies2 and behaves as a superenhancer in mature B *** deletion showed no influence on the VDJ repertoire and rather increased transcription of unrearranged V segments.3–5 Insulators binding CTCF farther downstream of the 3′RR were shown,however,to promote usage of distal VH segments.6 Altogether,there are strong indications that elements involved in long-distance regulation of transcription might also influence VDJ ***-frame splicing of VDJ exons is also needed for full Ig expression.7 Given the functional importance of gene architecture and long-range interactions for the IgH locus physiology,we explored the dependence of the VDJ repertoire on Med1,a known actor of long-range enhancer interactions.

关键词： B cells mediator VDJ repertoire

Trans-silencing effect of the 3′RR immunoglobulin heavy chain enhancer on Igκtranscription at the pro-B cell stage

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Cellular & Molecular Immunology 2019年第7期16卷 668-670页

作者： Nour Ghazzaui Hussein Issaoui Ophélie Alyssa Martin Alexis Saintamand jeanne cook-moreau Yves Denizot François Boyer CNRS UMR 7276 Inserm U1262Universitéde LimogesLimogesFrance Present address:Inserm U1236 UniversitéRennes 1RennesFrance

Due to their impact on nuclear organization,enhancers are master regulators of cell fate.1,2 The immunoglobulin heavy chain(IgH)locus undergoes numerous changes(such as transcription,accessibility,DNA breaks,and mutations)throughout B-cell *** of these events are controlled by the IgH 3′regulatory region(3′RR).The 3′RR is the master control element of mature B-cell IgH transcription,3 somatic hypermutation(SHM),4,5 conventional class switch recombination(CSR),4,6–10 and locus suicide recombination(LSR).11 In contrast,the 3′RR is expected to be dispensable for V(D)J recombination.12,13 During Bcell development,the heavy and light chain loci are poised for their VDJ and VJ rearrangements,*** IgH locus rearranges first,with D-J joining at the pro-B-cell stages,followed by V-DJ joining at the pre-B-cell *** Igk locus is poised for VJ rearrangements at the pre-B cell stage.

关键词： effect joining recombination

Retraction Note:Trans-silencing effect of the 3′RR immunoglobulin heavy chain enhancer on Igκtranscription at the pro-B cell stage

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Cellular & Molecular Immunology 2021年第8期18卷 2081-2081页

作者： Nour Ghazzaui Hussein Issaoui Ophélie Alyssa Martin Alexis Saintamand jeanne cook-moreau Yves Denizot François Boyer Present address:Inserm U1236 UniversitéRennes 1RennesFrance CNRS UMR 7276 Inserm U1262Universitéde LimogesLimogesFrance

The authors have retracted this *** the publication of this correspondence,it came to the authors’attention that the control RAG2^(−/−)mouse was a RAG2^(−/−)γc^(−/−)*** point resulted in the conclusions being consid... 详细信息

关键词： journal correspondence Igκ

Primary care providers should prescribe aspirin to prevent cardiovascular disease based on benefit−risk ratio,not age

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Family Medicine and Community Health 2021年第4期9卷 1-4页

作者： Kyungmann Kim Charles H Hennekens Lisa Martinez J Michael Gaziano Marc A Pfeffer Bianca Biglione Alexander Gitin jeanne Bell McCabe Thomas D cook David L DeMets Sarah K Wood Biostatistics and Medical Informatics University of Wisconsin-Madison School of Medicine and Public HealthMadisonWisconsinUSA Medicine and Population Health and Social Medicine Florida Atlantic UniversityCharles E Schmidt College of MedicineBoca RatonFloridaUSA Medicine Harvard Medical SchoolBostonMassachusettsUSA Medicine University of Florida College of MedicineGainesvilleFloridaUSA

Recent guidelines restricted aspirin(ASA)in primary prevention of cardiovascular disease(CVD)to patients10%,benefits of ASA will generally outweigh risks of significant *** should be considered only after implementation of therapeutic lifestyle changes and other drugs of proven benefit such as statins,which are,at the very least,additive to *** perspective is that individual clinical judgements by primary care providers about prescription of ASA in primary prevention of CVD should be based on our evidence-based solution of weighing all the absolute benefits and risks rather than *** strategy would do far more good for far more patients as well as far more good than harm in both developed and developing *** new and novel strategy for primary care providers to consider in prescribing ASA in primary prevention of CVD is the same as the general approach suggested by Professor Geoffrey Rose decades ago.

关键词： prevention aspirin absolute

颅内出血患者抗栓药逆转指南美国神经重症监护学会和美国重症医学会对医疗卫生专业人员的声明

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

国际脑血管病杂志 2016年第11期24卷 961-985页

作者： Jennifer A. Frontera John J. Lewin Ⅲ Alejandro A. Rabinstein Imo P. Aisiku Anne W. Alexandrov Aaron M. cook Gregory J. del Zoppo Monisha A. Kumar Ellinor I. B. Peerschke Michael F. Stiefel jeanne S Teitelbaum Katja E. Wartenberg Cindy L. Zerfoss 杨一萍谢丽丽宁小金季宇腾柯开富 From the Cerebrovascular Center Neurological Institute Cleveland Clinic and Case Western Reserve University 9500 Euclid Ave. S80 Cleveland OH44195 USA The Departments of Pharmacy and Anesthesiology & Critical Care Medicine The Johns Hopkins Hospital and Johns Hopkins University School of Medicine Baltimore MD USA The Department of Neurology Mayo Clinic Rochester MN USA Harvard Medical School Brigham and Women's Hospital Boston MA USA The University of Tennessee Health Science Center Memphis TN USA Department of Pharmacy Practice & Science (UK College of Pharmacy) University of Kentucky Lexington KY USA The Departments of Medicine (Hematology) and Neurology University of Washington School of Medicine Seattle WA USA The Departments of Neurology Neurosurgery Anesthesiology & Critical Care Perelman School of Medicine Hospital of the University of Pennsylvania Philadelphia PA USA The Department of Laboratory Medicine and Pathology Memorial Sloan Kettering Cancer Center and Weill Comell Medical School New York NY USA The Department of Neurosurgery Westchester Medical Center New York Medical College Valhalla NY USA Hepital du Sacre-Coeur and University of Montreal and Montreal Neurological Institute and McGill University Montreal Quebec Canada Klinik fur Neurologie Martin-Luther-Universitat Halle-Wittenberg Halle Germany The Neuroscience and Neurosurgery Departments Centra Lynchburg General Hospital Lvnchburg VA. USA 南通大学附属医院神经内科 226001

背景抗栓药的使用，包括抗凝药、抗血小板药和溶栓药，在过去10年中日益增多并且预计将继续上升。虽然抗栓药相关性颅内出血可能是灾难性的，但快速逆转凝血功能障碍可能有助于限制血肿增大和改善转归。方法美国神经重症监护学会联合美... 详细信息

背景抗栓药的使用，包括抗凝药、抗血小板药和溶栓药，在过去10年中日益增多并且预计将继续上升。虽然抗栓药相关性颅内出血可能是灾难性的，但快速逆转凝血功能障碍可能有助于限制血肿增大和改善转归。方法美国神经重症监护学会联合美国重症医学会组建了一个国际性多机构委员会，涉及的专业领域包括神经重症监护、神经内科、神经外科、卒中、血液学、血液病理学、急诊医学、药学、护理和指南制定，目的是进行文献评价并制定一份循证实践指南。该委员会进行了正式的文献检索，并对符合标准的研究进行了评价。结果利用GRADE方法学，委员会提出了在颅内出血情况下逆转维生素K拮抗药、直接Xa因子拮抗药、直接凝血酶抑制药、普通肝素、低分子肝素、类肝素、戊多糖、溶栓药和抗血小板药的推荐意见。结论该指南提供了及时和循证的抗栓药逆转策略以协助临床医生治疗抗栓药相关性颅内出血。

关键词：抗凝药抗血小板药抗栓药颅内出血脑出血脑实质出血蛛网膜下腔出血硬膜下出血逆转解药维生素K拮抗药华法林香豆素直接凝血酶抑制药达比加群 Xa因子抑制药阿哌沙班利伐沙班依杜沙班低分子肝素肝素类肝素戊多糖磺达肝素 TPA rtPA 阿替普酶溶栓药纤溶酶原激活物阿司匹林氯吡格雷凝血酶原复合物新鲜冰冻血浆重组因子Ⅶa 鱼精蛋白血小板去氨加压素冷沉淀指南 GRADE标准