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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/19146

Title: MicroRNAs as Potential Signatures of Environmental Exposure or Effect: A Systematic Review
Authors: Vrijens, Karen
Bollati, Valentina
Nawrot, Tim
Issue Date: 2015
Citation: ENVIRONMENTAL HEALTH PERSPECTIVES, 123 (5), p. 399-411
Abstract: BACKGROUND: The exposome encompasses all life-course environmental exposures from the prenatal period onward that influence health. MicroRNAs (miRNAs) are interesting entities within this concept as markers and causation of disease. MicroRNAs are short oligonucleotide sequences that can interact with several mRNA targets. OBJECTIVES: We reviewed the current state of the field on the potential of using miRNAs as biomarkers for environmental exposure. We investigated miRNA signatures in response to all types of environmental exposure to which a human can be exposed, including cigarette smoke, air pollution, nanoparticles, and diverse chemicals; and we examined the health conditions for which the identified miRNAs have been reported (i.e., cardiovascular disease, cancer, and diabetes). METHODS: We searched the PubMed and ScienceDirect databases to identify relevant studies. RESULTS: For all exposures incorporated in this review, 27 miRNAs were differentially expressed in at least two independent studies. miRNAs that had expression alterations associated with smoking observed in multiple studies are miR-21, miR-34b, miR-125b, miR-146a, miR-223, and miR-340; and those miRNAs that were observed in multiple air pollution studies are miR-9, miR-10b, miR-21, miR-128, miR-143, miR-155, miR-222, miR-223, and miR-338. We found little overlap among in vitro, in vivo, and human studies between miRNAs and exposure. Here, we report on disease associations for those miRNAs identified in multiple studies on exposure. CONCLUSIONS: miRNA changes may be sensitive indicators of the effects of acute and chronic environmental exposure. Therefore, miRNAs are valuable novel biomarkers for exposure. Further studies should elucidate the role of the mediation effect of miRNA between exposures and effect through all stages of life to provide a more accurate assessment of the consequences of miRNA changes.
Notes: [Vrijens, Karen; Nawrot, Tim S.] Hasselt Univ, Ctr Environm Sci, B-3590 Diepenbeek, Belgium. [Bollati, Valentina] Univ Milan, Dept Clin Sci & Community Hlth, Ctr Mol & Genet Epidemiol, Milan, Italy. [Nawrot, Tim S.] Leuven Univ, Environm & Hlth Unit, Dept Publ Hlth & Primary Care, Leuven, Belgium.
URI: http://hdl.handle.net/1942/19146
DOI: 10.1289/ehp.1408459
ISI #: 000357294000018
ISSN: 0091-6765
Category: A1
Type: Journal Contribution
Validation: ecoom, 2016
Appears in Collections: Research publications

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