Objectives: The mitogenic effect of the analogous insulin glargine is currently under debate since several clinical studies have raised the possibility that insulin glargine treatment has a carcinogenic potential in different tissues. This study aimed to evaluate the , , and gene expression in colon and liver of streptozotocin-induced diabetic rats in response to insulin glargine, neutral protamine Hagedorn (NPH) insulin, and metformin treatments.
Materials And Methods: Male Wistar rats were induced during one week with streptozotocin to develop Type 2 Diabetes (T2D) and then randomly distributed into four groups. T2D rats included in the first group received insulin glargine, the second group received NPH insulin, the third group received metformin; finally, untreated T2D rats were included as the control group. All groups were treated for seven days; after the treatment, tissue samples of liver and colon were obtained. Quantitative PCR (qPCR) was performed to analyze the , Insr and gene expression in each tissue sample.
Results: The liver tissue showed overexpression of the Insr and genes (>0.001) in rats treated with insulin glargine in comparison with the control group. Similar results were observed for the Insr gene (>0.011) in colonic tissue of rats treated with insulin glargine.
Conclusion: These observations demonstrate that insulin glargine promote an excess of insulin and IGF-1 receptors in STZ-induced diabetic rats, which could overstimulate the mitogenic signaling pathways.
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| http://dx.doi.org/10.22038/IJBMS.2018.24867.6185 | DOI Listing |
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