alexa Heat shock proteins (HSP70 and HSP27) as markers of epithelial dysplasia in oral leukoplakia.
Immunology

Immunology

Immunome Research

Author(s): Seoane JM, VarelaCentelles PI, Ramirez JR, CameselleTeijeiro J, Romero MA, , Seoane JM, VarelaCentelles PI, Ramirez JR, CameselleTeijeiro J, Romero MA,

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Abstract Heat shock proteins (HSPs) play a significant role in cell proliferation, differentiation, and oncogenesis. HSP70 and HSP27 are constitutively and gradually expressed in a broad range of normal tissues and neoplasms, and their expression has been assessed as markers for oral epithelial dysplasia. The study involved 43 patients with oral leukoplakia (OL): 23 were categorized as nondysplastic and 20 as dysplastic OLs. Immunohistochemistry was carried out with the monoclonal antibodies HSP70 and HSP27. The presence of epithelial dysplasia and its histologic grading was evaluated according to the World Health Organization classification: mild, moderate, and severe squamous epithelial dysplasia. Expression of HSPs within the epithelium was also evaluated. The difference in the percentage of HSP70 positive nuclei in nondysplastic and dysplastic OL reached statistical significance(Equation is included in full-text article.)95\% confidence interval = 17.74-43.82; P = 0.000). None of the 43 specimens analyzed showed positive nuclear immunostaining for anti-HSP27 antibody. No significant difference for HSP27 cytoplasmic expression could be identified between OL with or without epithelial dysplasia(Equation is included in full-text article.)95\% confidence interval = 0.44-3.95; P = 0.89). It is concluded that the nuclear HSP70 immunoexpression could be an objective marker for the presence of the epithelial dysplasia in OL. This article was published in Am J Dermatopathol and referenced in Immunome Research

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