[A fast transient osmotic method. Simultaneous in vivo determination of the reflexion coefficient and of the permeability/filtration coefficient ratio of the pulmonary capillary endothelium in the dog].
Thermodynamic variables characterizing the transport of water and urea across Dog pulmonary capillary membrane were obtained in vivo by means of a pulse transient osmotic method. Results were inconsistent with the hypothesis of a homoporous membrane. When data were interpreted in terms of an exclusive water channel and of a shared pore pathway, the value of the pore reflexion coefficient was close to zero for urea.
D000818:Animals; D002196:Capillaries / Q000502:physiology*; D002199:Capillary Permeability; D004285:Dogs; D004727:Endothelium / Q000098:blood supply; D005374:Filtration; D007457:Iodine Radioisotopes; D008168:Lung / Q000098:blood supply*; D008722:Methods; D012709:Serum Albumin / Q000378:metabolism; D014508:Urea / Q000378:metabolism
D007457:Iodine Radioisotopes; D012709:Serum Albumin; D014508:Urea
Méthode de transition osmotique rapide. Détermination simultanée in vivo du coefficient de réflexion et du rapport perméabilité sur coefficient de filtration de l'endothélium capillaire pulmonaire du chien.