1000 resultados para Dl-pyroangolensolide
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Échelle(s) : 1:100 000
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Échelle(s) : [ca 1:205 000]
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Échelle(s) : [ca 1:17 770 000]
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Échelle(s) : [ca 1:1 600 000]
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To study factors associated with anemia and its effect on survival in HIV-infected persons treated with modern combined antiretroviral therapy (cART), we characterized the prevalence of anemia in the Veterans Aging Cohort Study (VACS) and used a candidate gene approach to identify proinflammatory gene single nucleotide polymorphisms (SNPs) associated with anemia in HIV disease. The study comprised 1597 HIV(+) and 865 HIV(-) VACS subjects with DNA, blood, and annotated clinical data available for analysis. Anemia was defined according to World Health Organization criteria (hemoglobin < 13 g/dL and < 12 g/dL in men and women, respectively). The prevalence of anemia in HIV(+) and HIV(-) subjects was 23.1% and 12.9%, respectively. Independent of HIV status, anemia was present in 23.4% and 8% in blacks and whites, respectively. Analysis of our candidate genes revealed that the leptin -2548 G/A SNP was associated with anemia in HIV(+), but not HIV(-), patients, with the AA and AG genotypes significantly predicting anemia (P < .003 and P < .039, respectively, logistic regression). This association was replicated in an independent cohort of HIV(+) women. Our study provides novel insight into the association between genetic variability in the leptin gene and anemia in HIV(+) individuals.
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Échelle(s) : [ca 1:2 440 000], échelle 100 kilomètres [= 4,1 cm]
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Échelle(s) : 1:10 000, échelle de 1 à 10000
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The role of albumin in tubular secretion of the organic anions p-aminohippurate (PAH, 21% albumin-bound at 1 microM) and methotrexate (MTX, 55% bound at 1 microM), and of the organic cation N1-methylnicotinamide (NMN, not bound), was investigated in isolated rabbit S2 proximal tubules. PAH or MTX secretory rates were low in the absence of colloids or in the presence of 1 g/dl dextran 40, and were reversibly two- to sevenfold stimulated by either 1 g/dl bovine (BSA, either regular, defatted, and/or dialyzed) or rabbit serum albumin, or by dialyzed native rabbit plasma. NMN secretion was not stimulated by either dextran or albumin. Luminal BSA had no effect, but stimulation of PAH secretion was observed when albumin was present in both lumen and bath. This secretion was BSA concentration-dependent up to a 1 g/dl BSA. Saturation experiments suggested that 1 g/dl BSA may increase PAH apparent affinity for secretion, with no change in its maximum velocity. Albumin appears therefore to facilitate organic anion proximal secretion by an effect unrelated to oncotic pressure or to the extent of organic anion binding.
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Échelle(s) : 1:5 000, Echelle de 1 à 5,000
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Échelle(s) : [ca 1:225 000], 2 myriamètres [= 8,9 cm]
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Échelle(s) : [ca 1:2 128 000], échelle 10 myriamètres [= 4,7 cm]
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Échelle(s) : [ca 1:2 858 000], échelle 10 myriamètres [= 3,5 cm]
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Échelle(s) : [ca 1:2 607 000], échelle 10 myriamètres [= 13,1 cm]
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Échelle(s) : 1:66 666
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Échelle(s) : [ca 1:365 000], échelle de 4 lieues de poste de France [= 4,7 cm]