Abstract
Expression levels of thyrotropin receptor (TSH-R), thyroglobulin (Tg) and thyroid peroxidase (TPO) mRNA in normal and neoplastic human thyroid tissues (6 adenomas and 7 carcinomas) were investigated by Northern-blot and slot-blot analyses. We found that TSH-R mRNA levels were significantly lower in carcinoma tissues than in normal tissues. The levels of Tg mRNA were also significantly lowered in adenoma and carcinoma tissues as compared to normal tissues. In contrast, no significant difference was observed in the expression levels of TPO mRNA between these tissues. Furthermore, TSH-R mRNA levels were well-correlated with Tg mRNA levels in neoplastic tissues. These results suggest that mRNAs of TSH-R and Tg are expressed in relation to their degree of differentiation.
Published Version
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