The present study evaluated the effect of sodium saccharin on mouse tr
acheal epithelium, in relation to its possible structural alterations.
Mice of the C3H strain were fed with standard pellets supplemented wi
th sodium saccharin for 180 days. At that time the mice were sacrifice
d and their trachea were processed for transmission electronic microsc
opy. We demonstrated that sodium saccharin produces alterations in cel
lular surface cilia, with cytoplasmic excrescences and ciliar malforma
tions. These results suggest that sodium saccharin is not an innocuous
sweetener and that it may cause structural alterations in epithelial
tissues.