Abstract
The activity and electrophoretic mobility of 1-naphthyl acetate esterases in cystic fluids and cystic tissues of ameloblastomas, follicular and apical cysts were examined. The cystic fluids showed lower activities than sera but had very similar patterns on the electro-phoretogram. The activity levels of the three kinds of cystic fluids were not statistically significantly different. The fluid esterases may have originated from serum but they were not produced by the cystic lining tissue. Ameloblastoma tissues showed the highest activity per wet weight and per mg protein of the three kinds of cyst lesions ( P < 0.05). On the electrophoretogram, the esterase-I activity constituted 41 % of the total activity in ameloblastomas, whereas in follicular cysts and apical cysts the esterase-I activity constituted 32 % and 24 % of the total activity, respectively.
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