Abstract | BACKGROUND:
microRNAs ( miRNAs) are important regulators of translation and have been implicated in the pathogenesis of a number of cardiovascular diseases, including stroke, and suggested as possible prognostic biomarkers. Our aim was to identify miRNAs that are differentially regulated in cerebral arteries after subarachnoid hemorrhage (SAH), using a rat injection model of SAH and a qPCR-based screen of 728 rat miRNAs. Additionally, serum was analyzed for a possible spill-over to the circulation of regulated miRNAs from the vessel walls. RESULTS: We identified 482 different miRNAs expressed in cerebral arteries post-SAH. Two miRNAs, miR-30a and miR-143, were significantly upregulated in cerebral arteries after SAH when compared to sham-operated animals. However, none of these exhibited significantly altered serum levels after SAH versus post- sham surgery. The most robust upregulation was seen for miR-143, which has several predicted targets and is a strong regulator of vascular morphology. We hypothesize that miR-30a and miR-143 may play a role in the vascular wall changes seen after SAH. CONCLUSIONS: We report that miR-30a and miR-143 in the cerebral arteries show significant changes over time after SAH, but do not differ from sham-operated rats at 24 h post-SAH. Although this finding suggests interesting novel possible mechanisms involved in post-SAH cerebrovascular changes, the lack of regulation of these miRNAs in serum excludes their use as blood-borne biomarkers for cerebrovascular changes following SAH.
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Authors | Anne Holt Müller, Gro Klitgaard Povlsen, Claus Heiner Bang-Berthelsen, Lars Schack Kruse, Janne Nielsen, Karin Warfvinge, Lars Edvinsson |
Journal | BMC genomics
(BMC Genomics)
Vol. 16
Pg. 119
(Feb 22 2015)
ISSN: 1471-2164 [Electronic] England |
PMID | 25766280
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- MIRN143 microRNA, rat
- MIRN30 microRNA, rat
- MicroRNAs
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Topics |
- Animals
- Cerebral Arteries
(metabolism, pathology, surgery)
- Disease Models, Animal
- Gene Expression Regulation
- Humans
- MicroRNAs
(blood)
- Rats
- Subarachnoid Hemorrhage
(blood, genetics, pathology)
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