Investigating the Changes of miR-21 Expression in the Skin Sample of Veterans Exposed to Mustard Gas during Iran-Iraq War
Subject Areas : Journal of Animal Biology
Mohadese Valizadeh
1
(Department of Biology, Research Sciences Branch, Islamic Azad University, Tehran, Iran)
Masoud Soleimani
2
(Department of Tissue Engineering and Cellular Applied Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran-Department of Cell Therapy and Hematology, School of Medical Sciences, Tarbiat M)
Shiva Irani
3
(Department of Biology, Research Sciences Branch, Islamic Azad University, Tehran, Iran)
Mohammad Reza Nourani
4
(Nanobiotechnology Research Center, Baqiyatullah University, Tehran, Iran)
Mahmood Tavallaei
5
(Genetic Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran)
Keywords: Gene expression, Skin, biomarker, miR-21, Sulfur mustard,
Abstract :
Mustard sulfur (SM) is a blister and has destructive effects on the lungs, eyes, and skin. MicroRNAs are non-coding RNA molecules that regulate many important cellular pathways. The clear association of microRNA expression changes in a wide range of diseases and their interception in various organs of the body, including the skin, has made them a suitable biomarker. This study aims at evaluating the changes in miR-21 gene expression in chemical warfare victims infected with SM. In this study, skin biopsy specimens including 10 veterans exposed to SM with moderate complications, 10 veterans exposed to SM with severe complications, and 10 control samples were collected, and then total RNA was extracted. cDNA synthesis was performed. MiR-21 gene expression was assessed using real-time PCR. 5 s rRNA gene was used as the internal control. Graph Pad Prism software version 6.07 was used for the statistical analysis of data. Roc curve was used to evaluate the biomarker value of the miR-21 gene. Increased expression of the miR-21 gene was observed in samples of SM veterans compared with normal samples. There was a statistically significant difference in the expression of the miR-21 gene in the skin samples of veterans exposed to SM with moderate complications and veterans exposed to SM with severe complications compared with the samples of control skin (P-value 0.0001). The expression of the miR-21 gene in the skin samples of veterans exposed to SM with severe complications and veterans exposed to SM with moderate complications in old age was not significantly related to the control sample (P-value = 0.8049, P-value = 0.3802). This study showed that the relative expression of miR-21 could be a potential biomarker in distinguishing SM veterans from healthy individuals but needs further researches..
52. Zafarghandi M.R., Soroush M.R., Mahmoodi M., Naieni K.H., Ardalan A., Dolatyari A., Falahati F., Mirmohammadkhani M., Mousavi B., Ghanei M. 2013. Incidence of cancer in Iranian sulfur mustard exposed veterans: a long-term follow-up cohort study. Cancer Causes and Control, 24(1): 99-105.
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