Journal of Applied Physiology
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J Appl Physiol 17: 677-682, 1962;
8750-7587/62 $5.00
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Effect of x-irradiation on Na and K secretion by human parotid gland

H. K. Awwad 1 and Y. A. Habib 1

1 Departments of Radiology and Physiology, Faculty of Medicine, Alexandria University, Alexandria, Egypt, U.A.R.

Experiments were carried out on 12 subjects to study the secretion of Na and K in the parotid saliva over secretory rates ranging from 0.06 to 2.2 ml/min. The possible effect of X-irradiation per se on such secretions was evaluated. Sodium concentration in saliva was linearly related to flow rate, whereas the potassium concentration was negatively correlated to salivary secretory rate. X-irradiation by itself did not influence the secretion of Na apart from its influence on flow rate. In the case of potassium, a significantly greater regression coefficient of potassium secretion per minute and flow rate was noted. This was associated with a significantly higher K/Na ratio in the saliva.

Submitted on November 13, 1961






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