Journal of Applied Physiology
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J Appl Physiol 76: 218-222, 1994;
8750-7587/94 $5.00
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Journal of Applied Physiology, Vol 76, Issue 1 218-222, Copyright © 1994 by American Physiological Society

ARTICLES

High-sucrose diet inhibits basal secretion of intradentinal dye penetration-stimulating parotid hormone in pigs

J. M. Tieche, J. Leonora and R. R. Steinman
Department of Physiology, School of Medicine, Loma Linda University, California 92350.

Earlier studies indicated that feeding rats a high-sucrose diet for 1 wk decreases the intrinsic rate of intradentinal dye penetration in molar teeth. Because intradentinal dye penetration appears to be controlled by a parotid hormone, we investigated the chronic effect of a high-sucrose diet on basal parotid hormone secretion in pigs. In fasted pigs, the plasma immunoreactive parotid hormone titer decreased significantly after substitution of a high-sucrose diet for standard chow and remained at a level 72% lower for 40 days until the diet was reverted to standard chow. Within 3 days of diet reversion, the basal hormone titer returned to its original value. The results indicate that a high-sucrose diet can significantly alter the basal secretion of parotid hormone. The possibility exists that inhibition of intradentinal dye penetration after ingestion of a high-sucrose diet could be the result of depressed parotid hormone secretion.


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