Abstract
Background
Microvascular complications related to diabetes mellitus type II such as foot ulcers are the reason of many mortalities among T2DM patients. The role of microRNAs (miRNAs, miRs) as potent regulators of gene expression is studied in different diseases such as diabetes mellitus and primary studies revealed their importance as early detecting biomarkers. Therefore, in this study it is tried to evaluate the expression level of some miRNAs (miR-770-5p, miR-661 and miR-571) in serum and tissue samples of T2DM related foot ulcer among Iranian patients.
Methods
30 samples of blood and 30 muscle tissue were collected from T2DM patients suffering foot ulcer (T2DM + FU), 30 blood samples collected from T2DM patients without foot ulcer (T2DM-FU). 30 tissue samples collected from patients with trauma and 30 blood samples were selected as healthy controls.
Results
The three studied miRNAs were statistically significant in all groups in comparison to control blood group. Also, comparison between other groups showed a significant increase of all studied miRNAs especially in the blood and tissues of T2DM + FU patients. The only significant correlation detected between the FBS level and miR-571 expression pattern in blood samples of T2DM + FU group. Finally, the results showed that miR-571, -661, and -770 has a statistically significant discriminative character for differentiating T2DM + FU patients from T2DM-FU both in tissue and blood samples.
Conclusion
Although more studies are essential for certifying these findings, our results showed that miR-770-5p, miR-661 and miR-571 are correlated with the microvascular complications related with T2DM such as foot ulcer.
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The current study was approved by the Ethical committee of Shiraz University of Medical Sciences and also all the used protocols were in conformation with the ethical guidelines of Helsinki Declaration.
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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by Rashin VatanIman, Seyed Hossein Malekpour, Afsoon Afshari and Maryam Zare. The first draft of the manuscript was written by Afsoon Afshari and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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VatanIman, R., Malekpour, S.H., Afshari, A. et al. MiR-770-5p, miR-661 and miR-571 expression level in serum and tissue samples of foot ulcer caused by diabetes mellitus type II in Iranian population. Mol Biol Rep 48, 7811–7818 (2021). https://doi.org/10.1007/s11033-021-06798-9
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DOI: https://doi.org/10.1007/s11033-021-06798-9