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Apoptosis and anti‐apoptotic heat shock proteins in canine cutaneous infundibular keratinizing acanthomas and squamous cell carcinomas
Author(s) -
Bongiovanni Laura,
Romanucci Mariarita,
Fant Pierluigi,
Lagadic Marie,
Della Salda Leonardo
Publication year - 2008
Publication title -
veterinary dermatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.744
H-Index - 60
eISSN - 1365-3164
pISSN - 0959-4493
DOI - 10.1111/j.1365-3164.2008.00687.x
Subject(s) - tunel assay , heat shock protein , apoptosis , terminal deoxynucleotidyl transferase , carcinogenesis , immunohistochemistry , biology , programmed cell death , hsp27 , pathology , cancer research , caspase , cell , microbiology and biotechnology , hsp70 , medicine , cancer , biochemistry , genetics , gene
Cell stress and death are linked in the neoplastic process, and heat shock proteins appear to play an important role by inhibiting apoptotic pathways. The apoptotic rates in 9 canine infundibular keratinizing acanthomas (IKAs) and 17 canine squamous cell carcinomas (SCCs) were correlated with the immunohistochemical expression of caspase‐3 and the antiapoptotic heat shock proteins Hsp27, 72 and 73. Apoptosis was evaluated using the terminal deoxynucleotidyl transferase biotin‐dUTP nick end labelling (TUNEL) method. The absence of a correlation between the TUNEL index and active‐caspase‐3 expression, a paucity of active‐caspase‐3‐positive cells and Hsp72 over‐expression were considered to be indicative of inhibition of apoptosis, and suggestive that inhibition of cell death plays a key role in oncogenesis and tumour growth of some canine skin neoplasms.