[CD-34 and CASPASE-3 biomarkers expression in esophageal epidermoid carcinoma]

To analyze by cytophotometry study the expression of CD-34 angiogenesis and caspase-3 apoptosis markers in the esophagus squamous cell carcinoma and to correlate markers themselves.

Twenty-nine esophageal squamous cell carcinoma specimens were submitted to immunohystochemical analysis, based on label index of CD-34 and caspase-3 antibodies, using cytophotometry computer system. Variables considered in the correlation analysis were biomarkers expression quantification, patient age, lesion size, and TNM classification system.

Index label median value for CD-34 was 72,6% and for caspase-3 represented 96,5%. Statistical significant correlation was not demonstrated between the respective biomarkers and lesion size (p=0,96) or patient age (p=0,95). There was a slightly tendency to a positive correlation between CD-34 index label and TNM classification system (p=0,11). Although presenting a higher index label than CD-34 marker (p=0,007), caspase-3 did not show any relationship with the studied variables (p>0,19). The correlation between CD-34 and caspase-3 presented a small positive tendency (r=0,09 and p=0,65).

Both studied biomarkers showed good expression in esophageal squamous cell carcinoma, whereas CD-34 marker presented lower expression than caspase-3 in this specific tumor. The respective biomarkers do not demonstrate any correlation between themselves.