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The potential role of circulating-micro-RNA-21, -146a, -221 and -222 as non-invasive biomarkers in acute exercise training

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Authors
Sievänen, Tero
Date
2019
Discipline
Solu- ja molekyylibiologiaCell and molecular biology
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Elimistössä kiertävät mikro-RNAt (ci-miRNAt) säätelevät geenien toimintaa ja toimivat viestimolekyyleinä kudosten välillä. Tämän vuoksi niitä on mahdollista hyödyntää merkkimolekyyleinä mm. tutkittaessa liikunnan aiheuttamia vasteita kehossa. Hyvä merkkimolekyyli on helposti kerättävissä ilman invasiivisia menetelmiä. Hien on uskottu olevan sopiva tähän käyttötarkoitukseen. Tässä tutkielmassa tutkittiin, että voidaanko hiestä löytää ci-miRNA:ta ja korreloivatko mahdolliset löydökset myös veren seerumin kanssa. Tutkimuksessa havaittiin ci-miRNA:ta löytyvän hiestä ja ci-miRNA-146a pitoisuuden nousseen hiessä VO2 max testin jälkeen, mutta veressä ei havaittu mitään vasteita. Myös korrelaatiot veren ja hien välillä olivat erittäin heikot. Tämän vuoksi ci-miRNA:ja ei voida pitää luotettavina merkkimolekyyleinä VO2 max testille eikä hienkeruuta voida suositella merkkimolekyylien keräämiseen toistaiseksi. ci-miRNA:ja voidaan kuitenkin yhä pitää potentiaalisia merkkimolekyyleinä liikunnalle. Lisätutkimusta ci-miRNA:en toiminnasta ja tutkimismenetelmistä vaaditaan vielä runsaasti. ...
 
The potential use of circulating micro-RNAs (ci-miRNAs) as non-invasive biomarkers to monitor exercise adaptation has raised interest recently. Sweat is held as suitable candidate for such non-invasive biomarker harvest as it is easily collected without invasive methods. Thus, the aims of the study were to investigate if ci-miRNAs can be detected from sweat and to further examine circulating profiles of the same ci-miRNAs as acute response to VO2 max test in sweat and serum. Also, it was examined whether the ci-miRNA profiles correlated between the body fluids. It was observed, for the first time, that sweat contained ci-miRNAs and the expression of ci-miRNA-146a was upregulated after acute exercise. However, the ci-miRNA correlations between the body fluids were weak. Based on our observations, sweat harvesting cannot be supported after VO2 max test and ci-miRNAs cannot be utilized as VO2 max biomarkers currently, but they hold potential to function as such in the future. Until then, several obstacles regarding to exercise study designs and miRNA overall methodology should be overcome. ...
 
Keywords
exercise exosome extracellular vesicle hiki mikro-RNA harjoittelu sweat microRNA training
URI

http://urn.fi/URN:NBN:fi:jyu-201906203322

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  • Pro gradu -tutkielmat [24534]

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