[Nucleic acid and electrolyte contents in human endometrium during menstrual cycle (author's transl)].

An analysis of RNA-, DNA-, Magnesium and Calcium tissue contents was performed to have a base for functional studies of biochemical steroid hormone effects on nucleic acid metabolism in human endometrium. DNA and RNA showed a cyclic, paralleled course with a first peak in the preovulatory phase and a second increase in the late secretory phase. In contrast to the Calcium tissue concentration, which showed a continuous decrease from the proliferative to the secretory phase, an increase of Magnesium concentration in the preovulatory phase was found.