Effect of dietary chloride content on the elimination of bromide by dogs
1995
Trepanier, L.A. | Babish, J.G.
The effect of dietary chloride content (0.2, 0.4 and 1.3 per cent chloride on a dry matter basis) on the disposition of a single oral dose of bromide (14 mg kg-1) was evaluated in normal beagles. Increasing the dietary chloride content from 0.2 to 1.3 per cent resulted in a significant decrease in the mean apparent elimination half-life from 69 +/- 22 days to 24 = 7 days. The mean area under the concentration curve (AUC) for dogs fed 1.3 per cent chloride was significantly smaller than the AUC for dogs fed 0.2 per cent chloride. Dietary chloride had no effect on the maximum serum concentrations (Cmax) or on the time (Tmax) to reach the maximum concentrations. The steady-state serum bromide concentrations predicted from the single dose data for daily doses of 14 mg kg-1 of bromide were significantly lower in dogs ted 1.3 per cent chloride (310 +/- 150 mg litre-1) than in dogs fed 0.2 per cent chloride (1950 +/- 1140 mg litre-1). The predicted mean daily doses of bromide necessary to maintain serum levels within the therapeutic range for dogs fed 1.3 per cent chloride (43 +/- 13 mg kg-1) were almost twice as high as the dose estimated for dogs fed 0.4 per cent chloride (22 +/- 3 mg kg-1) and nearly three times as high as the dose estimated for dogs fed 0.2 per cent chloride (15 +/- 4 mg kg-1). These differences were statistically significant (P=0.002).
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