Certain Factors including Fluoride which affect Magnesium Calcinosis in the Dog and Rat

Abstract
The studies herein reported confirm in part observations previously made and indicate further that certain interrelationships between Mg, Ca, P and F- were involved in the low Mg induced calcinosis. A balance of these elements was essential for its prevention and control. Dietary F- greatly reduces, or largely prevents calcinosis in the dog, whereas the rat is less likely to show a reduction of excessive calcification of low Mg-induced calcinosis. The evidence at this time suggests a species differences. Minimal prevention level in the dog was 25 ppm F-. This effect was independent of feed intake. From the results in the response of calcinosis in dogs by fluoride treatment during magnesium depletion and 25-day repletion, it appeared that fluoride prevented the initiation of the calcification of soft tissues but it had no effect on the preformed calcified lesions during the course of 25-day repletion period.