[Activity of glutamate dehydrogenase, gamma-glutamyltranspeptidase and creatine kinase in saliva in gingivitis].

In the human saliva (oral fluid), the activity of glutamate dehydrogenase tends to decrease in gingivitis and diminishes in periodontitis. That of gamma-glutamyl transpeptidase and creatine kinase increases in gingivitis. In periodontitis, their activity is higher than that in gingivitis.

[Iron in oral cavity fluid in gingival inflammation].

In parodontosis, iron levels are higher in the human gingival fluid and mixed saliva. The free iron-binding capacity of saliva is also increased. In gingivitis, higher levels of iron and free binding capacity are less evident.

[Adenylate cyclase and guanylate cyclase in the saliva of healthy persons and in periodontitis].

Studies of mixed salivary pools of normal subjects aged 22-35 and of patients with periodontitis of slight and medium degree, aged 25-55, have shown a 1.5 times lower activity of salivary adenylate cyclase in the patients with slight periodontitis as against normal subjects and an almost two times lower activity of this enzyme in medium-severity periodontitis patients as against those with the slight condition. The directions of changes in guanylate cyclase activities are contrary; this enzyme activity is elevated in the patients with the slight-degree condition vs.

[Effects of saccharose diet and drinking water with different mineral composition on calcium-phosphorus metabolism in the teeth and bones of rats].

Metabolism of 32P and 45Ca in the teeth and bones was studied in 140 Wistar rats that received a high-saccharose diet and varying amounts of Ca, Mg and F in drinking water. The water hardness and F content influence 45Ca and 32P metabolism in the teeth and bones and caries development. 45Ca and 32P inclusion into mineralized tissues was decreased in rats fed with the high-saccharose diet as compared to the control animals which received a usual ration.

[The effect of magnesium sulfate electrophoresis and galvanization on the mineralization of teeth and bones].

Effects of Mg2+ electrophoresis and galvanization on tooth and bone mineralization was experimentally studied with the use of radioactive Ca and P isotopes. Mg2+ electrophoresis and, to a lesser degree, galvanization enhanced 32P incorporation in incisors and maxillary bones. Mg2+ significantly increased 45Ca incorporation in teeth and maxillary bones.