Sialo-Semeiology; Application of the Analysis of Saliva to the Diagnosis of Diathetic Diseases and Gingo-Dental Changes

Sialo-Semeiology; Application of the Analysis of Saliva to the Diagnosis of Diathetic Diseases and Gingo-Dental Changes

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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1902 edition. Excerpt: ...place the presence of a salt of calcium is necessary. In alkaline saliva we do not observe the precipitation.of glyco-mucin, but we observe it constantly in acid saliva. But in spite of these precipitations, unless special conditions are present, the fermentation is not necessarily lactic. From these observations the conclusion that we can draw is that it is not possible to doubt that vital activity is the principal factor, and that its action is of a purely biochemical nature. The reducing amylolytic reactions provoked by the diastases are always, apparently, simple. They comprise either an hydration, an oxidation, or a coagulation, while the bacteriological fermentations provoke profound decompositions, and are often accompanied by gaseous emanation, a thing which is never caused by fermentation of enzymes. Is the production of diastasic principles solely derived from the vital activity of the glandular cells, independently of any secretion from micro-organisms of the economy? A distinction of the diastasis is made (pepsin, pancreatin. ptyalin) although the result of their action is the same as regards digestion. But do the chemical principles of diastasis differ from each other? The elaboration of those principles may possibly be influenced by toxins circulating in the blood-plasma and characterize certain pathological conditions. Researches on the subject of dental caries in young and healthy persons made us consider it possible that acid fermentation of glycogen by ptyalin may take place. The following experiments were devised in order to discover how such fermentation might occur:: 'E 1i'c;v'f1'1i4iil. pjfi the Fermentation of Glycogen by Ptyalin. Description of the apparatus. This is composed of three glass receptacles...show more

Product details

  • Paperback | 26 pages
  • 189 x 246 x 1mm | 68g
  • Rarebooksclub.com
  • United States
  • English
  • black & white illustrations
  • 1236850130
  • 9781236850133