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Freedman, Barry I,Bowden, Donald W,Ziegler, Julie T,Langefeld, Carl D,Lehtinen, Allison B,Rudock, Megan E,Lenchik, Leon,Hruska, Keith A,Register, Thomas C,Carr, J Jeffrey Mary Ann Liebert, Inc 2009 Journal of bone and mineral research Vol.24 No.10
<P>Inverse relationships have been observed between BMD and vascular calcification (VC), suggesting an underlying metabolic pathway linking these processes. Bone morphogenetic proteins (BMPs) are potential candidate genes that may mediate this relationship. Four single nucleotide polymorphisms (SNPs) in the BMP2 gene, 2 SNPs in BMP4, and 16 SNPs in BMP7 were tested for association with measures of VC using CT (coronary and carotid arteries, abdominal aorta), and BMD was measured using DXA (lumbar spine, hip, and distal radius) and quantitative CT (QCT; thoracic and lumbar spine) in 920 European Americans from 374 Diabetes Heart Study families: 762 with type 2 diabetes. Variance components quantitative trait locus association analysis was computed using SOLAR software, and a bivariate principal component analysis (PCA) assessed for genetic relationships between BMD and VC. Association was observed between several measures of BMD and BMP7 rs17404303 (thoracic spine QCT p = 0.03; lumbar spine QCT p = 0.02; hip DXA p = 0.06, dominant models). In addition, 6 of 16 BMP7 SNPs showed significant and opposing effects on the bivariate PCA for VC and BMD (two-sided exact test, p = 0.0143). Polymorphisms in BMP7 are associated with inverse relationships between bone mineralization and VC in the coronary, carotid, and abdominal aorta in a diabetes-enriched cohort of European Americans.</P>
THE EARLIEST NEAR-INFRARED TIME-SERIES SPECTROSCOPY OF A TYPE Ia SUPERNOVA
Hsiao, E. Y.,Marion, G. H.,Phillips, M. M.,Burns, C. R.,Winge, C.,Morrell, N.,Contreras, C.,Freedman, W. L.,Kromer, M.,Gall, E. E. E.,Gerardy, C. L.,Hö,flich, P.,Im, M.,Jeon, Y.,Kirshner, R. P.,Nu IOP Publishing 2013 The Astrophysical journal Vol.766 No.2
<P>We present ten medium-resolution, high signal-to-noise ratio near-infrared (NIR) spectra of SN 2011fe from SpeX on the NASA Infrared Telescope Facility (IRTF) and Gemini Near-Infrared Spectrograph (GNIRS) on Gemini North, obtained as part of the Carnegie Supernova Project. This data set constitutes the earliest time-series NIR spectroscopy of a Type Ia supernova (SN Ia), with the first spectrum obtained at 2.58 days past the explosion and covering -14.6 to +17.3 days relative to B-band maximum. CI lambda 1.0693 mu m is detected in SN 2011fe with increasing strength up to maximum light. The delay in the onset of the NIR CI line demonstrates its potential to be an effective tracer of unprocessed material. For the first time in a SN Ia, the early rapid decline of the MgII lambda 1.0927 mu m velocity was observed, and the subsequent velocity is remarkably constant. The MgII velocity during this constant phase locates the inner edge of carbon burning and probes the conditions under which the transition from deflagration to detonation occurs. We show that the MgII velocity does not correlate with the optical light-curve decline rate Delta m(15)(B). The prominent break at similar to 1.5 mu m is the main source of concern for NIR k-correction calculations. We demonstrate here that the feature has a uniform time evolution among SNe Ia, with the flux ratio across the break strongly correlated with Delta m(15)(B). The predictability of the strength and the onset of this feature suggests that the associated k-correction uncertainties can be minimized with improved spectral templates.</P>
Megan E. Rudock,Amanda. J. Cox,Julie T. Ziegler,Allison B. Lehtinen,Jessica J. Connelly,Barry I. Freedman,J. Jeffrey Carr,Elizabeth R. Hauser,Benjamin D. Horne,Donald W. Bowden 한국유전학회 2011 Genes & Genomics Vol.33 No.5
All manifestations of cardiovascular disease (CVD) are substantially more common in patients with type 2 diabetes mellitus (T2DM) than in non-diabetic individuals. The current study evaluated KALRN, a gene previously linked to CVD, as a contributor to CVD in a sample enriched for T2DM. Specifically,the potential modifying effect of cigarette smoking was examined. A total of 28 SNPs in KALRN were genotyped in 1001 European Americans from 369 Diabetes Heart Study (DHS) families, as well as 762 population-based controls. The association between each SNP and both qualitative and quantitative CVD disease phenotypes was determined using generalized estimating equations and variance component models,respectively. Selected KALRN SNPs were found to be associated with both the qualitative (T2DM, CVD, metabolic syndrome)and quantitative traits (C-reactive protein and abdominal aortic calcified plaque). Interaction analysis and stratification were then used to test whether smoking modulates the genetic effects of KALRN. The strongest evidence of a modifying effect of smoking status was observed for rs9289231 and intima-media thickness (p=9.0x10^(-4)) and abdominal aortic calcified plaque (p=3.0x10^(-4)). Overall, following stratification by smoking status, the evidence of association with quantitative traits was more pronounced in smokers compared to non-smokers. The strongest association for smokers was between rs1720960 and abdominal aortic calcified plaque (p=2.6x10^(-5)), while in non-smokers there was no observed association. KALRN variants are associated with measures of CVD and T2DM in the DHS sample with smoking status observed to have a significant modifying effect on these associations.