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478篇 您的检索式:作者名="Burger G"
    题名 作者 年代 出处 被引量
1抑制素(一)显示文摘引言抑制素(Inhibin)是由双硫键连接的两个不同的亚单位,α(分子量20KD)与β(分子量3~15KD)所组成的糖蛋白,它抑制垂体促性腺激素,主要是抑制卵泡刺激素(FSH)的产生和(或)分泌。研究最广的是从牛、猪、羊、鼠和人样本纯化和克隆的分子量为31~32KD的抑制素。从卵巢卵泡液或颗粒细胞和支持细胞培养液中提取的,往往不同于31KD 型的是一些58KD 的分子量较高的抑制素,即具有较大的α44亚单位抑制素。β亚单位有两种类型,称为β_A 和β_a,其相应的抑制素二聚体称为抑制素 A 和抑制素 B。已证实β亚单位的二聚体具有刺激 FSH的活性,被称为激活素(Activin)。报据它是否由β_A 或β_a 组成的同种二聚体或由β_AHenry G Burger 肖碧莲 1992生殖医学杂志1992,1,1:3
2动态^(18)F-FDG PET定量分析用于骨病变鉴别诊断显示文摘目的 评价18F 脱氧葡萄糖 (FDG)PET在骨骼病变中的诊断价值。方法 研究对象为40例原发性骨骼病变患者。所有患者在注射示踪剂后立即开始动态PET采集 ,持续 6 0min。对动态PET图像进行半定量分析 ,分别计算平均和最大标准摄取值 (SUVaver和SUVmax) ,病灶SUV/肌肉SUV比值 (T/M) ,病灶 6 0minSUV/ 30minSUV比值 (SUVaver 60 /3 0min和SUVmax 60 /3 0min)等。采用Patlak作图分析法对动态图像数据进行拟合计算 ,得出摄入常数 (Ki) ,计算FDG代谢率 (MRFDG)。根据接受器工作特性曲线 (ROC)确定各定量指标的诊断阈值 ,并比较其鉴别良恶性病变的灵敏度和特异性。结果 经病理检查证实恶性病变 2 1例 ,良性病变 19例。恶性病变的MRFDG和SUV值高于良性病变 ,但各种指标的数值分布均存在交叉重叠。SUVaver与MRFDG呈正相关 (r=0 6 7)。以SUV值≥ 1 8作为阈值时 ,鉴别良恶性病变的灵敏度和特异性分别为 85 0 %和 82 4% ,以MRFDG(1 1)为阈值时的灵敏度 (82 4% )与SUV相近 ,而特异性 (92 9% )较高。同时采用SUV(1 8)和SUVaver 60 /3 0min(1 1)作为鉴别标准时 ,较之单独采用SUV特异性可改善为 93 3% ,灵敏度略有降低 (81 3% )。结论 骨骼良恶性病变之间存在葡萄糖代谢率差异。单用静态FDGPET获取SUV值不能很好鉴?吴华 Antonia Dimitrakopoulou-Strauss Thomas O-Heichel Burkhard Lehner Ludger Bernd Volker Ewerbeck Cyrill Burger Ludwig G Strauss 2002中华核医学杂志2002,22,2:3
3Spatial and temporal distribution of trace metals in sediments from the Scheldt Estuary, south - west Netherlands 显示文摘ZWOLSMAN J J G VANECK O T M BURGER O 1996Coastal land Shelf Science1996,,43:1
4Elevated serum inhibin concentrations in postmenopausal women with ovarian tumors显示文摘HEALY D L BURGER H G MAMERA P R N 1993N Engl J Med1993,329,:1
5Survival of arteriove- nous fistulas and Shunts for hemodialysis显示文摘Burger H Kluchert BA Kootstra G 1995Eur J surg1995,161,3:1
6p150 expression and its prognostic value in squamous-cell carcinoma of esophagus显示文摘Chen G Burger M M 1999Int J Cancer1999,84,2:1
7Mitoe hondrial evolution显示文摘Gray MW Burger G Lang BF 1999Science1999,283,:1
8Spontaneous release of interleukin-6 by primary cultures of lymphoid and tumor cell populations purified from human ovrian carcinoma显示文摘Burger R A Grosen E A Ioli G R 1995Interferon Cytokine Research1995,15,3:1
9Statins inhibit C - reactive protein- induced chemokine secretion, ICAM - 1 upregulation and chemotaxis in adherent human monocytes显示文摘Montecucco F Burger F Pelli G 2009Rheumatolo- gy2009,48,3:1
10Analysis scheme in the ensemble Kalman filter显示文摘Burgers G van Leeuwen P J Evensen G 1998Mon Wea Rev1998,126,:1
11The relationship between social anxiety and social support in adoleseents:A test of competing causal models显示文摘Calsyn R J Winter J P Burger G K 2005Adolescents2005,40,157:1
12Lumbar disk herniation:correlation of histologic findings with marrow signal intensity changes in vertebral endplate at MR imaging显示文摘Schmid G Witteler A Wil burger R 0,,02:1
13Isolation of simian virus 40 from a newborn child显示文摘Brandner G Burger A Neumann-Haefelin D 1977J Clin Microbiol1977,5,2:1
14The minor capsid protein VP1 of the autonomous parvovirus minute virus of mice is dispensable for encapsidation of progeny single-stranded DNA but is required for infectivity显示文摘TULLIS G E BURGER L R PINTEL D J 1993J Virol1993,69,1:1
15Spontaneous ignition in oil reservoirs显示文摘Burger J G 1976SPE Journal1976,16,2:1
16The regulation of FSH beta transcription by gonadal steroids:testosterone and estradiol modulation of the activin intracellular signaling pathway显示文摘BURGER L L HAISENLEDER D J WOTTON G M 2007Am J Physiol Endocrinol Metab2007,293,1:1
17Hormonal changes in the menopause transition显示文摘BURGER H G DUDLEY E C ROBERSON D M 2002RecentProg Horm Res2002,57,:1
18Novel poly(arylene ether) s with pendent trifluoromethyl groups 显示文摘BANERJEE S MAIER G BURGER M 1999Macromolecules1999,32,:1
19A phase II trial of vindesine in hepatocellularcancer显示文摘Falkson G Burger W 1995Oncology1995,52,1:1
20Estimating root respiration microbial respiration in the rbizosphere, and rnot-free soil respira- tion in forest soils 显示文摘Kehing D L Burger J A Edwards G S 1998Soil Biology and Biochemistry1998,30,:1
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