Zobrazení zdroje stránky Kinneylundqvist8265

© The Author(s) 2020. Published by Oxford University Press on behalf of the Society for Integrative and Comparative Biology. All rights reserved. For permissions please email journals.permissions@oup.com.BACKGROUND Sugar-sweetened beverage consumption is associated with metabolic dysfunction. Artificially sweetened beverages (ASBs) are often promoted as an alternative. However, evidence for the safety of ASB consumption during pregnancy is lacking. OBJECTIVES The effects of sugar-sweetened beverage and ASB consumption during pregnancy in mice were examined, and we hypothesized that both sugar-sweetened beverages and ASBs would impair maternal metabolic function. METHODS Pregnant female C57BL/6J mice received control drinking water (CD), high-fructose corn syrup (Fr; 20% kcal intake; 335 mM), or the artificial sweetener acesulfame potassium (AS; 12.5 mM) in their drinking water, from gestational day (GD) 0.5 (n&nbsp;=&nbsp;8/group). Body weights and food and water intakes were assessed every second day, an oral-glucose-tolerance test (OGTT) was performed at GD 16.5, and mice were culled at GD 18.5. RT-PCR was carried out on adipose tissue, liver, and gut. Adipose tissue morphology was assessed using histological methodsassociated with maternal metabolic dysfunction in mice. AS was also associated with reduced fetal growth and fetal hypoglycemia. Therefore, ASBs may not be a beneficial alternative to sugar-sweetened beverages during pregnancy. Copyright © The Author(s) on behalf of the American Society for Nutrition 2020.Leaves are formed by coordinated growth of tissue layers driven by cell proliferation and expansion. Compensation, in which a defect in cell proliferation induces compensated cell enlargement (CCE), plays an important role in cell-size determination during leaf development. We previously reported that CCE triggered by an3 mutation is observed in epidermal and subepidermal layers in Arabidopsis thaliana (Arabidopsis) leaves. Interestingly, CCE is induced in a non-cell-autonomous manner between subepidermal cells. However, whether CCE in the subepidermis affects cell size in the adjacent epidermis is still unclear. We induced layer-specific expression of AN3 in an3 leaves, and found that CCE in the subepidermis had little impact on cell-size determination in the epidermis, and vice versa, suggesting that CCE is induced in a tissue-autonomous manner. Examination of the epidermis in an3 leaves having AN3-positive and -negative sectors generated by Cre/lox-P revealed that, in contrast to the subepidermis, CCE occurred exclusively in AN3-negative epidermal cells, indicating a cell-autonomous action of an3-mediated compensation in the epidermis. These results clarified that the epidermal and subepidermal tissue layers have different cell autonomies in CCE. In addition, quantification of cell expansion kinetics in epidermal and subepidermal tissues of the an3 showed that the tissues exhibited a similar temporal profile to reach a peak cell-expansion rate as comparable to WT. This might be one feature representing that the two tissue layers retain their growth coordination even in the presence of CCE. © The Author(s) 2020. Published by Oxford University Press on behalf of Japanese Society of Plant Physiologists. All rights reserved. For permissions, please email journals.permissions@oup.com.SUMMARY Most eukaryotic genes produce alternative polyadenylation (APA) isoforms. APA is dynamically regulated under different growth and differentiation conditions. Here we present a bioinformatics package, named APAlyzer, for examining 3'UTR APA, intronic APA, and gene expression changes using RNA-seq data and annotated polyadenylation sites (PASs) in the PolyA_DB database. Using APAlyzer and data from the GTEx database, we present APA profiles across human tissues. AVAILABILITY APAlyzer is freely available at https//bioconductor.org/packages/release/bioc/html/APAlyzer.html as an R/Bioconductor package. SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online. © The Author(s) (2020). Published by Oxford University Press. All rights reserved. For Permissions, please email journals.permissions@oup.com.MOTIVATION Read alignment is central to many aspects of modern genomics. Most aligners use heuristics to accelerate processing, but these heuristics can fail to find the optimal alignments of reads. Alignment accuracy is typically measured through simulated reads; however, the simulated location may not be the (only) location with the optimal alignment score. RESULTS Vargas implements a heuristic-free algorithm guaranteed to find the highest-scoring alignment for real sequencing reads to a linear or graph genome. With semiglobal and local alignment modes and affine gap and quality-scaled mismatch penalties, it can implement the scoring functions of commonly used aligners to calculate optimal alignments. While this is computationally intensive, Vargas uses multi-core parallelization and vectorized (SIMD) instructions to make it practical to optimally align large numbers of reads, achieving a maximum speed of 456 billion cell updates per second. We demonstrate how these "gold standard" Vargas alignments can be used to improve heuristic alignment accuracy by optimizing command-line parameters in Bowtie 2, BWA-MEM, and vg to align more reads correctly. AVAILABILITY AND IMPLEMENTATION Source code implemented in C ++ and compiled binary releases are available at https//github.com/langmead-lab/vargas under the MIT license. SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online. © The Author(s) 2020. Published by Oxford University Press.5-chloro-2-(2,4-dichlorophenoxy)phenol (triclosan) is an antimicrobial chemical widely used in consumer household and clinical healthcare products. Human and animal studies have associated triclosan exposure with allergic disease. Mechanistic studies have identified triclosan as a mitochondrial uncoupler; recent studies suggest that mitochondria play an important role in immune cell function and are involved in activation of the NLRP3 inflammasome. [https://www.selleckchem.com/products/scriptaid.html Selleckchem Scriptaid] In the present study, early immunological effects were evaluated via NLRP3 activation following dermal triclosan application in a BALB/c murine model. These investigations revealed rapid caspase-1 activation and mature IL-1β secretion in the skin and draining lymph nodes (dLNs) after 1.5 and 3% triclosan exposure. Correspondingly, pro-Il-1b and S100a8 gene expression increased along with extracellular ATP in the skin. Peak gene expression of chemokines associated with caspase-1 activation occurred after 2 days of exposure in both skin tissue and dLNs. Phenotypic analysis showed an increase in neutrophils and macrophages in the dLN and myeloid and inflammatory monocytes in the skin tissue.