1.
Fiziol Zh (1978)
; 36(1): 91-5, 1990.
Article
in Russian
| MEDLINE
| ID: mdl-2323453
ABSTRACT
Complex examination of lungs in 24 healthy guinea pigs in different periods of day using physicochemical, biochemical and electron-microscopic methods has revealed that the highest surface activity of the pulmonary surfactant (PS) is observed in the evening and at night, as phospholipids contain the highest amount of a surfactant of the phosphatidylcholine fraction the most active in the surface-active respect. An increase in the content of PS phospholipids in this period of the day appears to be a consequence of synthesis and secretion intensification in the second-type alveolocytes, that may be due to an increased effect of the vagus nerve.
Subject(s)
Pulmonary Alveoli/physiology , Pulmonary Surfactants/physiology , Animals , Circadian Rhythm , Female , Guinea Pigs , Male , Microscopy, Electron , Pulmonary Alveoli/cytology , Pulmonary Alveoli/ultrastructure , Pulmonary Surfactants/analysis , Pulmonary Surfactants/metabolism , Surface Properties
2.
Vrach Delo
; 3: 72-4, 1971 Mar.
Article
in Russian
| MEDLINE
| ID: mdl-5578027