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  • Middle Aged  (1)
  • RNA characterisation and manipulation, Transcriptome Mapping - Monitoring Gene Expression  (1)
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  • 1
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    Ingested mineral fibers: elimination in human urine (1979)
    American Association for the Advancement of Science (AAAS)
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    Publication Date: 1979-04-13
    Description: Sediment in human urine examined by transmission electron microscopy contains amphibole fibers which originate from the ingestion of drinking water contaminated with these mineral fibers. The ingestion of filtered water results in the eventual disappearance of amphibole fibers from urine. These observations provide the first direct evidence for the passage of mineral fibers through the human gastro-intestinal mucosa under normal conditions of the alimentary canal.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cook, P M -- Olson, G F -- New York, N.Y. -- Science. 1979 Apr 13;204(4389):195-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/219478" target="_blank"〉PubMed〈/a〉
    Keywords: Adult ; Aged ; Female ; Gastric Mucosa/metabolism ; Humans ; Intestinal Absorption ; Intestinal Mucosa/metabolism ; Male ; Middle Aged ; Silicon Dioxide/metabolism/*urine ; *Water Pollutants ; *Water Pollutants, Chemical
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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    Dissecting the nascent human transcriptome by analysing the RNA content of transcription factories (2015)
    Oxford University Press
    Details
    Publication Date: 2015-08-18
    Description: While mapping total and poly-adenylated human transcriptomes has now become routine, characterizing nascent transcripts remains challenging, largely because nascent RNAs have such short half-lives. Here, we describe a simple, fast and cost-effective method to isolate RNA associated with transcription factories, the sites responsible for the majority of nuclear transcription. Following stimulation of human endothelial cells with the pro-inflammatory cytokine TNFα, we isolate and analyse the RNA content of factories by sequencing. Comparison with total, poly(A) + and chromatin RNA fractions reveals that sequencing of purified factory RNA maps the complete nascent transcriptome; it is rich in intronic unprocessed transcript, as well as long intergenic non-coding (lincRNAs) and enhancer-associated RNAs (eRNAs), micro-RNA precursors and repeat-derived RNAs. Hence, we verify that transcription factories produce most nascent RNA and confer a regulatory role via their association with a set of specifically-retained non-coding transcripts.
    Keywords: RNA characterisation and manipulation, Transcriptome Mapping - Monitoring Gene Expression
    Print ISSN: 0305-1048
    Electronic ISSN: 1362-4962
    Topics: Biology
    Published by Oxford University Press
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