Evaluation of Downstream Regulatory Element Antagonistic Modulator Gene in Human Multinodular Goiter

Medical Science Monitor Basic Research
Amanda ShinzatoEricka B Trarbach

Abstract

BACKGROUND DREAM (Downstream Regulatory Element Antagonistic Modulator) is a neuronal calcium sensor that was suggested to modulate TSH receptor activity and whose overexpression provokes an enlargement of the thyroid gland in transgenic mice. The aim of this study was to investigate somatic mutations and DREAM gene expression in human multinodular goiter (MNG). MATERIAL AND METHODS DNA and RNA samples were obtained from hyperplastic thyroid glands of 60 patients (54 females) with benign MNG. DREAM mutations were evaluated by PCR and direct automatic sequencing, whereas relative quantification of mRNA was performed by real-time PCR. Over- and under-expression were defined as a 2-fold increase and decrease in comparison to normal thyroid tissue, respectively. RQ M (relative quantification mean); SD (standard deviation). RESULTS DREAM expression was detected in all nodules evaluated. DREAM mRNA was overexpressed in 31.7% of MNG (RQ M=6.26; SD=5.08), whereas 53.3% and 15% had either normal (RQ M=1.16; SD=0.46) or underexpression (RQ M=0.30; SD=0.10), respectively. Regarding DREAM mutations analysis, only previously described intronic polymorphisms were observed. CONCLUSIONS We report DREAM gene expression in the hyperplastic thyro...Continue Reading

References

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Citations

Apr 12, 2018·Archives of Endocrinology and Metabolism·Fernando A BatistaLaura S Ward

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Methods Mentioned

BETA
PCR

Software Mentioned

Systat
Sequencher
[UNK]

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