160 research outputs found

    An experimental and theoretical study.

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    Dendrobium Ethel Kamemoto 'Splendor'

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    Characteristics and monthly spray yield of the cultivar release are given

    ‘‘Apapane’ and ‘‘I‘iwi’ Anthurium

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    This paper describes the '‘Apapane' and '‘I‘iwi' anthuriums two cut-flower varieties bred from the University of Hawai‘i patented variety 'Tropic Fire.

    Further Studies on the Fairy Shrimp Populations of Northeastern Ohio

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    Author Institution: Kent State University, Kent, Ohio, and Lincoln High School, Canton, Ohi

    Search for markers of invasive growth in breast cancer: association with disease prognosis

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    In the present study, we analyzed the gene expression profiles of various morphological structures of breast cancer (GEO, GSE80754) to identify new markers of invasion and to assess their association with disease prognosis. Nine proteins (KIF14, DSC3, WAVE, etc.) was selected based on the literature analysis of the involvement of genes up- and down-regulated in solid and trabecular structures in cancer invasion and a heterogeneity in expression of their proteins in breast tumors. The association of these proteins with patients' survival was assessed

    Seladin-1 expression is regulated by promoter methylation in adrenal cancer

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    <p>Abstract</p> <p>Background</p> <p>Seladin-1 overexpression exerts a protective mechanism against apoptosis. Seladin-1 mRNA is variably expressed in normal human tissues. Adrenal glands show the highest levels of seladin-1 expression, which are significantly reduced in adrenal carcinomas (ACC). Since up to now seladin-1 mutations were not described, we investigated whether promoter methylation could account for the down-regulation of seladin-1 expression in ACC.</p> <p>Methods</p> <p>A methylation sensitive site was identified in the seladin-1 gene. We treated DNA extracted from two ACC cell lines (H295R and SW13) with the demethylating agent 5-Aza-2-deoxycytidine (5-Aza). Furthermore, to evaluate the presence of an epigenetic regulation also 'in vivo', seladin-1 methylation and its mRNA expression were measured in 9 ACC and in 5 normal adrenal glands.</p> <p>Results</p> <p>The treatment of cell lines with 5-Aza induced a significant increase of seladin-1 mRNA expression in H295R (fold increase, F.I. = 1.8; p = 0.02) and SW13 (F.I. = 2.9; p = 0.03). In ACC, methylation density of seladin-1 promoter was higher (2682 ± 686) than in normal adrenal glands (362 ± 97; p = 0.02). Seladin-1 mRNA expression in ACC (1452 ± 196) was significantly lower than in normal adrenal glands (3614 ± 949; p = 0.01).</p> <p>Conclusion</p> <p>On this basis, methylation could be involved in the altered pattern of seladin-1 gene expression in ACC.</p

    RETRACTED ARTICLE: Age-dependent Increase in Desmosterol Restores DRM Formation and Membrane-related Functions in Cholesterol-free DHCR24−/− Mice

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    Cholesterol is a prominent modulator of the integrity and functional activity of physiological membranes and the most abundant sterol in the mammalian brain. DHCR24-knock-out mice lack cholesterol and accumulate desmosterol with age. Here we demonstrate that brain cholesterol deficiency in 3-week-old DHCR24−/− mice was associated with altered membrane composition including disrupted detergent-resistant membrane domain (DRM) structure. Furthermore, membrane-related functions differed extensively in the brains of these mice, resulting in lower plasmin activity, decreased β-secretase activity and diminished Aβ generation. Age-dependent accumulation and integration of desmosterol in brain membranes of 16-week-old DHCR24−/− mice led to the formation of desmosterol-containing DRMs and rescued the observed membrane-related functional deficits. Our data provide evidence that an alternate sterol, desmosterol, can facilitate processes that are normally cholesterol-dependent including formation of DRMs from mouse brain extracts, membrane receptor ligand binding and activation, and regulation of membrane protein proteolytic activity. These data indicate that desmosterol can replace cholesterol in membrane-related functions in the DHCR24−/− mouse

    The Causal Effect of Family Income on Child Health: A Re-Examination Using an Instrumental Variables Approach

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    Despite a recent growth in studies examining the association between family income and child health, very few studies investigate whether this is a causal relationship. This paper addresses this major methodological gap and examines the causal effect of family income on child health in the UK. Using rich observational data from a British cohort study, we exploit exogenous variation in local labour market characteristics to instrument for family income. We estimate the effect of family income on subjective child health and control for potential transmission channels through which income could affect child health. The results from our models provide novel evidence that income has a small but significant causal effect on subjective child health. Moreover, the analysis shows that parental health does not drive a spurious relationship between family income and child health as argued in recent contributions. We do not find significant effects of family income on chronic indicators of child health. The results are robust to different sets of instrumental variables, and to alternative measures of income
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