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中华神经医学杂志 2006年第6期5卷 559-561页

作者：徐武华陆兵勋徐俊王慕真梁瑞华何丽婵東海林幹夫松原悦朗广州市红十字会医院神经内科(暨南大学医学院第四附属医院) 510220 南方医科大学附属南方医院神经内科 510515 广州市第一人民医院老年病科 510180 日本国岡山大学大学院医齿学综合研究科神经病态内科学

目的通过比较有无自身抗Aβ抗体的阿尔茨海默病(AD)患者和年龄匹配的健康老年对照者(aNC)血浆Aβ水平之间差异,研究自身抗Aβ抗体对血浆Aβ水平的影响。方法113例AD患者和155例aNC的血浆对Tg2576小鼠大脑组织连续切片进行免疫染色,并进... 详细信息

目的通过比较有无自身抗Aβ抗体的阿尔茨海默病(AD)患者和年龄匹配的健康老年对照者(aNC)血浆Aβ水平之间差异,研究自身抗Aβ抗体对血浆Aβ水平的影响。方法113例AD患者和155例aNC的血浆对Tg2576小鼠大脑组织连续切片进行免疫染色,并进行组织淀粉样蛋白免疫反应(TAPIR)测定。随后,TAPIR阳性和阴性血浆分别与人工合成的Aβ40、Aβ42进行免疫沉降,免疫沉降物经过western blot检测分析其免疫特性。最后通过一种双抗体夹心的ELISA精确定量所有血浆的Aβ水平。结果(1)自身抗Aβ抗体无差异地频繁出现于AD患者(45．1%)和aNC中(41．3%)(P＞0．05),并在免疫沉降过程中表现出与Aβ40更强的亲和力。(2)两组TAPIR+和TAPIR-血浆的Aβ40和Aβ42水平比较均无显著性差异(P＞0．05)。结论自身抗Aβ抗体不足以影响血浆Aβ水平,人类抗Aβ抗体产生和作用机制可能有别于转基因AD动物模型。

关键词：自身抗Aβ抗体 Aβ 阿尔茨海默病转基因小鼠

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An Earth-mass planet in a time of COVID-19:KMT-2020-BLG-0414Lb

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Research in Astronomy and Astrophysics 2021年第9期21卷 243-261页

作者： Weicheng Zang Cheongho Han Iona Kondo Jennifer C.Yee Chung-Uk Lee Andrew Gould Shude Mao Leandro de Almeida Yossi Shvartzvald Xiangyu Zhang Michael D.Albrow Sun-Ju Chung Kyu-Ha Hwang Youn Kil Jung Yoon-Hyun Ryu In-Gu Shin Sang-Mok Cha Dong-Jin Kim Hyoun-Woo Kim Seung-Lee Kim Dong-Joo Lee Yongseok Lee Byeong-Gon Park Richard W.Pogge John Drummond Thiam-Guan Tan JoséDias do Nascimento Júnior Dan Maoz Matthew T.Penny Wei Zhu Ian A.Bond Fumio Abe Richard Barry David P.Bennett Aparna Bhattacharya Martin Donachie Hirosane Fujii Akihiko Fukui Yuki Hirao Yoshitaka Itow Rintaro Kirikawa Naoki Koshimoto Man Cheung Alex Li Yutaka matsubara Yasushi Muraki Shota Miyazaki Greg Olmschenk Clément Ranc Nicholas J.Rattenbury Yuki Satoh Hikaru Shoji Stela Ishitani Silva Takahiro Sumi Daisuke Suzuki Yuzuru Tanaka Paul J.Tristram Tsubasa Yamawaki Atsunori Yonehara Andreea Petric Todd Burdullis Pascal Fouqué Department of Astronomy Tsinghua UniversityBeijing 100084China Department of Physics Chungbuk National UniversityCheongju 28644Republic of Korea Department of Earth and Space Science Graduate School of ScienceOsaka UniversityToyonakaOsaka 560-0043Japan Center for Astrophysics j Harvard&Smithsonian 60 Garden St.CambridgeMA 02138USA Korea Astronomy and Space Science Institute Daejon 34055Republic of Korea University of Science and Technology Korea(UST)217 Gajeong-ro Yuseong-guDaejeon 34113Republic of Korea Max-Planck-Institute for Astronomy Königstuhl 1769117 HeidelbergGermany Department of Astronomy Ohio State University140 W.18th Ave.ColumbusOH 43210USA National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China Universidade Federal do Rio Grande do Norte(UFRN) Departamento de F´1sica59078-970NatalRNBrazil Department of Particle Physics and Astrophysics Weizmann Institute of ScienceRehovot 76100Israel University of Canterbury Department of Physics and AstronomyPrivate Bag 4800Christchurch 8020New Zealand School of Space Research Kyung Hee UniversityYonginKyeonggi 17104Republic of Korea Possum Observatory PatutahiGisbourneNew Zealand Perth Exoplanet Survey Telescope PerthAustralia School of Physics and Astronomy Tel-Aviv UniversityTel-Aviv 6997801Israel Department of Physics and Astronomy Louisiana State UniversityBaton RougeLA 70803 USA Canadian Institute for Theoretical Astrophysics University of Toronto60 St George StreetTorontoON M5S 3H8Canada Institute of Natural and Mathematical Sciences Massey UniversityAuckland 0745New Zealand Institute for Space-Earth Environmental Research Nagoya UniversityNagoya 464-8601Japan Code 667 NASA Goddard Space Flight CenterGreenbeltMD 20771USA Department of Astronomy University of MarylandCollege ParkMD 20742USA Department of Physics University of AucklandPrivate Bag 92019AucklandNew Zealand Department of Earth and Planetary Science Graduate School of ScienceThe University of Tokyo7-3-1 Hongo

We report the discovery of KMT-2020-BLG-0414 Lb,with a planet-to-host mass ratio q2=0.9-1.2×10-5=3-4 q⊕at 1σ,which is the lowest mass-ratio microlensing planet to *** with two other recent discoveries(4?q/q⊕?6),it fills out the previous empty sector at the bottom of the triangular(log s,log q)diagram,where s is the planet-host separation in units of the angular Einstein radiusθ***,these discoveries call into question the existence,or at least the strength,of the break in the mass-ratio function that was previously suggested to account for the paucity of very low-q *** to the extreme magnification of the event,Amax~1450 for the underlying single-lens event,its light curve revealed a second companion with q3~0.05 and|log s3|~1,i.e.,a factor~10 closer to or farther from the host in *** measurements of the microlens parallaxπE and the angular Einstein radiusθE allow estimates of the host,planet and second companion masses,(M1,M2,M3)~(0.3 M⊙,1.0 M⊕,17 MJ),the planet and second companion projected separations,(a⊥,2,a⊥,3)~(1.5,0.15 or 15)au,and system distance DL~1 *** lens could account for most or all of the blended light(I~19.3)and so can be studied immediately with high-resolution photometric and spectroscopic observations that can further clarify the nature of the *** planet was found as part of a new program of high-cadence follow-up observations of high-magnification *** detection of this planet,despite the considerable difficulties imposed by COVID-19(two KMT sites and OGLE were shut down),illustrates the potential utility of this program.

关键词： gravitational lensing:micro

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