ISSN:
1432-2013
Keywords:
Submandibular Gland
;
Saliva
;
Magnesium
;
Calcium
;
Inorganic Phosphate
;
Submandibulardrüse
;
Speichel
;
Magnesium
;
Calcium
;
Anorganisches Phosphat
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Summary The excretion of magnesium, calcium, and inorganic phosphate by the submandibular gland of normal cats was studied during electrical stimulation of the parasympathetic nerve fibers to the gland. The concentration of magnesium and calcium decreased rapidly after the beginning of constant stimulation. Thereafter a constant level was reached. The changes of phosphate concentrations were less marked. Steady state magnesium and calcium concentrations were independent of the salivary flow when this was above 100 μl/min×g gland weight. The concentration of both magnesium and calcium increased at flows below this value. Steady state concentration of inorganic phosphate was independent of salivary flow when this was higher than 150–200 μl/min×g gland weight and increased at lower secretory rates. The concentrations of all the three elements were always lower than the serum concentrations. Acute thyroparathyroidectomy did not alter the secretory pattern. In acutely thyroparathyroidectomized animals an increase in serum magnesium concentration from 2–5 meq/l did not change steady state salivary magnesium concentrations. This was only moderately augmented by still higher concentrations. A rise in serum calcium concentration to 15 meq/l did not affect the steady state salivary calcium concentration.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00588543
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