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J Dent Res 29(6): 817-824, 1950
© 1950 International and American Associations for Dental Research
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CHANGES IN ALKALINE PHOSPHATASE ACTIVITY OF RAT ORAL EPITHELIUM DURING THE ESTROUS CYCLE AND IN RESPONSE TO ADMINISTERED ESTROGEN

J. R. RING 1 and B. LEVY 1

1 Departments of Anatomy and Oral Pathology, Washington University School of Dentistry, St. Louis, Mo.

1. The alkaline phosphatase visualization method of Gomori affords a means of measuring at least one aspect of the chemical activity of cells in the oral mucous membranes in the absence of marked morphologic change.

2. Alkaline phosphatase activity of buccal epithelium increases during the estrous cycle of the normal female rat from a minimum in diestrus to a maximum during estrus.

3. The extremes are amplified in the spayed and spayed-estrogen treated animals.

4. Gingival epithelium exhibits a negligible phosphatase activity during all stages of the estrous cycle and in the presence of administered estrogen.

5. The distribution of zones of activity of this enzyme in buccal epithelium suggests a relationship to the process of keratin formation.

Submitted on June 29, 1950






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