Hsp27, Hsp60, Hsp70, and Hsp90 are chaperones that play a crucial role in cellularhomeostasis and differentiation, but they may be implicated in carcinogenesis. Follicular neoplasmsof the thyroid include follicular adenoma and follicular carcinoma. The former is a very frequent benignencapsulated nodule, whereas the other is a nodule that infiltrates the capsule, blood vessels and theadjacent parenchyma, with a tendency to metastasize. The main objective was to assess the potentialof the Hsps in differential diagnosis and carcinogenesis. We quantified by immunohistochemistryHsp27, Hsp60, Hsp70, and Hsp90 on thin sections of human thyroid tissue with follicular adenoma orfollicular carcinoma, comparing the tumor with the adjacent peritumoral tissue. Hsp60, Hsp70, andHsp90 were increased in follicular carcinoma compared to follicular adenoma, while Hsp27 showedno difference. Histochemical quantification of Hsp60, Hsp70, and Hsp90 allows diagnostic distinctionbetween follicular adenoma and carcinoma, and between tumor and adjacent non-tumoral tissue.The quantitative variations of these chaperones in follicular carcinoma suggest their involvement intumorigenesis, for instance in processes such as invasion of thyroid parenchyma and metastasization.
|Numero di pagine||11|
|Stato di pubblicazione||Published - 2019|