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矿物岩石地球化学通报 2018年第2期37卷 191-191页

作者： Maximilian Korges Philipp Weis Volker Lüders oscar laurent 袁超

全球范围内的锡（Sn）和钨（W）矿化普遍与高演化花岗岩有关,但是达到经济品位的矿床较少,且矿化的类型也各有不同,其矿床成因机制一直存在较大争议。近日,《地质学》杂志报道了德国地球科学研究中心的Maximilian Korges等人关于上述问... 详细信息

全球范围内的锡（Sn）和钨（W）矿化普遍与高演化花岗岩有关,但是达到经济品位的矿床较少,且矿化的类型也各有不同,其矿床成因机制一直存在较大争议。近日,《地质学》杂志报道了德国地球科学研究中心的Maximilian Korges等人关于上述问题的研究成果。该团队以位于德国和捷克的Erzgebirge山脉的ZinnwaldS n-W矿床为研究对象,进行了系统的流体包裹体地球化学研究。

关键词：沸腾作用云英岩体流体包裹体

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Genomes reveal selective sweeps in kiang and donkey for high-altitude adaptation

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Zoological Research 2021年第4期42卷 450-460页

作者： Lin Zeng He-Qun Liu Xiao-Long Tu Chang-Mian Ji Xiao Gou Ali Esmailizadeh Sheng Wang Ming-Shan Wang Ming-Cheng Wang Xiao-Long Li Hadi Charati Adeniyi CAdeola Rahamon Akinyele Moshood Adedokun Olatunbosun Oladipo Sunday Charles Olaogun oscar JSanke Mangbon Godwin F Sheila Cecily Ommeh Bernard Agwanda Jacqueline Kasiiti Lichoti Jian-Lin Han Hong-Kun Zheng Chang-Fa Wang Ya-Ping Zhang laurent A.F.Frantz Dong-Dong Wu State Key Laboratory of Genetic Resources and Evolution Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China Hainan Key Laboratory for Biosafety Monitoring and Molecular Breeding in Off-Season Reproduction Regions Institute of Tropical Bioscience and BiotechnologyChinese Academy of Tropical Agricultural SciencesHaikouHainan 571101China College of Animal Science and Technology Yunnan Agricultural UniversityKunmingYunnan 650201China Department of Animal Science Faculty of AgricultureShahid Bahonar University of KermanKermanPB 76169-133Iran Kunming College of Life Science University of Chinese Academy of SciencesKunmingYunnan 650204China Sino-Africa Joint Research Center Chinese Academy of SciencesKunmingYunnan 650223China Center for Excellence in Animal Evolution and Genetics Chinese Academy of SciencesKunmingYunnan 650223China Institute of Three-River-Source National Park Chinese Academy of SciencesXiningQinghai 810008China School of Biological and Chemical Sciences Queen Mary University of LondonLondon E14NSUK Department of Genetics Albert Einstein College of MedicineBronxNew YorkNY 10461USA Annoroad Gene Tech.(Beijing)Co. Ltd.Beijing 100176China State Key Laboratory of Genetic Resources and Evolution Yunnan Laboratory of Molecular Biology of Domestic AnimalsGermplasm Bank of Wild SpeciesKunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China Department of Veterinary Medicine University of IbadanIbadan 200284Nigeria Federal College of Animal Health and Production Technology Moor-PlantationIbadan 234102Nigeria Taraba State Ministry of Agriculture and Natural Resources Jalingo 660221Nigeria Division of Veterinary Office Serti 663101Nigeria Institute For Biotechnology Research Jomo Kenyatta University of Agriculture and Technology Nairobi 62000-00200Kenya Department of Zoology National Museums of KenyaNairobi 40658-00100Kenya State Department of Livestock Ministry of AgricultureLivestockFisheries and IrrigationN

Over the last several hundred years,donkeys have adapted to high-altitude conditions on the Tibetan ***,the kiang,a closely related equid species,also inhabits this *** reports have demonstrated the importance of specific genes and adaptive introgression in divergent lineages for adaptation to hypoxic conditions on the Tibetan ***,we assessed whether donkeys and kiangs adapted to the Tibetan Plateau via the same or different biological pathways and whether adaptive introgression has *** assembled a de novo genome from a kiang individual and analyzed the genomes of five kiangs and 93 donkeys(including 24 from the Tibetan Plateau).Our analyses suggested the existence of a strong hard selective sweep at the EPAS1 locus in *** Tibetan donkeys,however,another gene,i.e.,EGLN1,was likely involved in their adaptation to high *** addition,admixture analysis found no evidence for interspecific gene flow between kiangs and Tibetan *** findings indicate that despite the short evolutionary time scale since the arrival of donkeys on the Tibetan Plateau,as well as the existence of a closely related species already adapted to hypoxia,Tibetan donkeys did not acquire adaptation via admixture but instead evolved adaptations via a different biological pathway.

关键词： Kiang Donkey High altitude Adaptation Selection

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Contribution of Automated Antigen Tests, the LumiraDx Ag Test in the Response during the Second Wave of the COVID-19 Pandemic in Bangui

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Journal of Tuberculosis Research 2023年第4期11卷 173-183页

作者： Clotaire Donatien Rafaï Pierre Somse Wilfrid Sylvain Nambei Ernest Lango-Yaya Marie-Roseline Darnycka Belizaire Ulrich Vickos Narcisse Patrice Komas oscar Senzongo Luc Salva Heredeibona Ulrich Jeffrey Kotemossoua Rabbi Mermoz Senekian Simon Pounguinza Jephté Estimé Kaleb Kandou Christian-Diamant Mossoro-Kpinde laurent Bélec Jean De Dieu Longo Norbert Richard Ngbale Abdoulaye Sepou François-Xavier Mbopi-Keou Gérard Grésenguet Boniface Koffi National Laboratory of Clinical Biology and Public Health Bangui Central African Republic Faculty of Health Sciences University of Bangui Bangui Central African Republic Ministry of Health and Population Bangui Central African Republic World Health Organization Bangui Central African Republic Institut Pasteur de Bangui Bangui Central African Republic Virology Laboratory Georges Pompidou European Hospital Université Paris Cité Paris France Hôpital Communautaire of Bangui Bangui Central African Republic Faculty of Medicine and Biomedical Sciences University of Yaounde I Yaounde Cameroon

Context and objective: The COVID-19 pandemic has become a major public health problem and has mobilized many innovative means of diagnosis. The Central African Republic is not spared. The emergence of variants and their impact require health monitoring despite the obligation of vaccination. The purpose of this campaign was to determine the circulation of pending second-wave variants. Patients and Methods: A second mass screening campaign took place from 02 to 22 July 2021 in the main land and river entry points of Bangui (Exit North-PK12, Exit South-PK9, Port Beach) and at the LNBCSP. Antigenic and RT-PCR tests carried out on nasopharyngeal samples made it possible to select strains which were finally sequenced. Results: Of 2687 participants included in the study, 53 (1.97%) were positive for SARS-CoV-2. Thirteen (1.53%) were male and 40 (2.18%) female. The analyses carried out on the LumiraDx analyzer were positive for 109 samples against 53 on the RT-PCR. The prevalence was higher in the most tested age groups (30 to 50 years) with two clusters identified. B.1.617.2 (Delta) variants were predominant (57%). Conclusion: SARS-CoV-2 continues to circulate. The acquisition of automated antigenic tests (LumiraDx®) with sensitivity and specificity close to those of the reference test (RT-PCR) will allow better mass diagnosis for an optimization of the surveillance of COVID-19 in our countries with limited resources. The predominance of the B.1.617.2 (Delta) variant would suggest a third wave in the Central African Republic.

关键词： COVID-19 Automated Antigen Testing

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Real-time mechanical characterization of DNA degradation under therapeutic X-rays and its theoretical modeling

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Microsystems & Nanoengineering 2016年第1期2卷 9-17页

作者： Grégoire Perret Thomas Lacornerie Fabio Manca Stefano Giordano Momoko Kumemura Nicolas Lafitte laurent Jalabert Mehmet C.Tarhan Eric F.Lartigau Fabrizio Cleri Hiroyuki Fujita Dominique Collard LIMMS/CNRS-IIS UMI 2820 Institute of Industrial ScienceThe University of Tokyo4-6-1 Komaba Meguro KuTokyo 153-8505Japan IEMN UMR8520CNRSAvenue PoincaréCitéScientifiqueBP 60069Villeneuve d’AscqCedex 59652France CNRS/IIS/COL/Lille 1 SMMiL-E project CNRS Délégation Nord-Pas de Calais et Picardie2 rue de CanonniersLilleCedex 59046France Centre oscar Lambret Universitéde LilleDépartement Universitaire de RadiothérapieCentre Oscar LambretLille 59000France Institute of Industrial Science The University of Tokyo4-6-1 KomabaMeguro-kuTokyo 153-8505Japan

The killing of tumor cells by ionizing radiation beams in cancer radiotherapy is currently based on a rather empirical understanding of the basic mechanisms and effectiveness of DNA damage by *** contrast,the mechanical behaviour of DNA encompassing sequence sensitivity and elastic transitions to plastic responses is much better understood.A novel approach is proposed here based on a micromechanical Silicon Nanotweezers *** instrument allows the detailed biomechanical characterization of a DNA bundle exposed to an ionizing radiation beam delivered here by a therapeutic linear particle accelerator(LINAC).The micromechanical device endures the harsh environment of radiation beams and still retains molecular-level detection *** this study,the first real-time observation of DNA damage by ionizing radiation is *** DNA bundle degradation is detected by the micromechanical device as a reduction of the bundle stiffness,and a theoretical model provides an interpretation of the *** first real-time observations pave the way for both fundamental and clinical studies of DNA degradation mechanisms under ionizing radiation for improved tumor treatment.

关键词： biomechanical measurements DNA damage microfluidic radiotherapy real-time Silicon Nanotweezers

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血管性因素对认知损害和痴呆的促成作用美国心脏协会／美国卒中协会对医疗卫生专业人员的声明

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国际脑血管病杂志 2012年第2期20卷 85-124页

作者：无无无无无曹雯炜（译）糜建华（译）宋叶平（译）余寿芬（译）王飞（译）李焰生（译）美国心脏协会卒中委员会流行病学与预防委员会心血管护理委员会心血管放射学和介入委员会心血管外科和麻醉学委员会上海交通大学医学院附属仁济医院神经科上海200127

背景与目的本科学声明提供了血管性因素对认知损害（co,airiveimpairment）和痴呆促成作用证据的纵览。血管性因素在老年认知损害和痴呆中的作用十分普遍。本文对血管性认知损害（vascularcognitiveimpairment，VCI）的定义、神经病理... 详细信息

背景与目的本科学声明提供了血管性因素对认知损害（co,airiveimpairment）和痴呆促成作用证据的纵览。血管性因素在老年认知损害和痴呆中的作用十分普遍。本文对血管性认知损害（vascularcognitiveimpairment，VCI）的定义、神经病理学、基础科学和病理生理学研究、神经影像学的作用、血管性和其他相关危险因素的作用以及潜在的防治方法进行了回顾，旨在为临床医生提供一份总体指导，以进一步加深对VCI和痴呆及其防治的理解。方法写作组成员由写作组联合主席基于先前在相关领域的研究成果提名，并经美国心脏协会（AmericanHeartAssociation，AHA）卒中委员会科学声明监督委员会、流行病学和预防委员会以及文稿监督委员会批准。写作组采用系统文献回顾（主要涵盖1990年至2010年5月期间的文献）、以往公布的指南、个人资料以及专家观点总结现有证据，提出当前知识的不足，并对适当的问题根据AHA标准制定推荐意见。所有写作组成员均有机会对推荐意见进行评论并认可了最终版本。经AHA的同行评议以及卒中委员会领导阶层、流行病学和预防委员会以及科学声明监督委员会审阅后，最终获得AHA科学咨询和协调委员会批准。结果VCI概念的提出涵盖了与所有类型脑血管性脑损害（而不仅仅是卒中）相关的整个认知障碍（cognitivedisorder）谱，其范围从轻度认知损害到完全痴呆。神经血管单元和脑血流调节机制障碍可能是VCI的潜在病理生理学过程的重要组成部分。脑淀粉样血管病已成为阿尔茨海默病（Alzheimerdisease，AD）、微梗死、微出血、脑出血以及VCI风险的一个重要标志。老年认知损害的神经病理学改变常常是AD与微血管性脑损害的混合状态，二者可叠加和协同增高认知损害风险。就此而言，MRI和其他神经影像学技术在VCI的确定和识别中起着重要作用，并提供证据说明以白质高信号和小的深部梗死为特征的皮质下型VCI很常见。在许多情况下，VCI的风险标志同样也是卒中的传统危险因素。这些危险因素包括但不仅限于心房颤动、高血压、糖尿病和高胆固醇血症。而且，这些血管危险因素也可能是AD的风险标志。颈动脉内膜一中膜厚度和动脉僵硬度是动脉老化的标记物，也可能成为VCI的风险标志。目前，美国食品药物管理局尚未批准任何VCI的特异性治疗方法。不过，对卒中和心血管病传统危险因素的评价和控制，可能对包括老年人群在内的VCI的预防具有作用。结论血管性因素在认知损害和痴呆中的促成作用很重要。近年来，在临床前、神经病理学、神经影像学、生理学和流行病学研究基础上，对VCI的认识得到了不断提高。推荐使用跨学科的、转化的以及交互的方法进一步加深对此领域的了解，并更好地掌握其神经心理学特征。需要开展前瞻性定量临床一病理学一神经影像学研究，以提高对神经影像学改变的病理学基础，以及血管病变和AD病变在VCI和AD临床演变中的复杂的丰互作用的认识。可能需要在中年期尽早肝始对血管危险标志进行长期干预，以预防或延迟VCI或AD发病的研究。住高危人群I}1强化控制血管危险因素则是另一个重要的研究方向。

关键词： AHA科学声明血管性痴呆阿尔茨海默病危险因素预防治疗

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