Iatrogenic Damage to the Periodontium Caused by Periodontal Treatment Procedures.

Periodontitis is an inflammatory disease affecting the periodontium i.e. the tissues that surround and support the teeth.

Iatrogenic Damage to the Periodontium Caused by Radiation and Radiotherapy.

The radio-sensitivity of a tissue or organ is measured by its response to irradiation. Loss of moderate numbers of cells does not affect the function of most organs. However, with loss of large numbers of cells, all affected organisms display a clinical result.

[The effect of hydrocortisone on carbohydrase activity along the intestinal villus in chicks].

Administration of hydrocortisone increased the sucrase and amylolytic activities in the brush border of the enterocytes along the intestinal villus and decreased the maltase activity in fed chicken. Hydrocortisone does not affect the level of maltase activity in food-deprived chicks.

[The effect of hydrocortisone on pancreatic hydrolase activity in hungry and fed chicks].

Hydrocortisone was shown to prompt the accumulation of pancreatic enzymes taking part in the processing of food protein components in food-deprived chicks. The quality of the enzymes synthetized under hormonal induction does not differ from that in control groups.

Determination of the cellulolytic activity of Micromycetes by an express method.

An express method of testing the cellulolytic activity of Trichoderma viride in media with cellulose-containing substrates by the rate of glucose production has been elaborated. The optimum temperature selections and duration of sample incubation (1 h, 50 degrees C) have been described, and the temperature coefficient for the scale-down of the enzyme complex from 50 to 30 degrees C (0.77) has been determined.