[Electron microscopic study of colonic epithelial cells from the grass frog Rana temporaria under different intensity of water absorption]. / Elektronno-mikroskopicheskoe issledovanie kletok épiteliia tolsto kishki travianoi liagushki Rana temporaria pri razlichnoi intensivnosti vsasyvaniia vody.
Tsitologiia
; 43(7): 639-47, 2001.
Article
en Ru
| MEDLINE
| ID: mdl-11552644
Three cell types have been revealed in the epithelium of the frog large intestine: granular, mitochondria-rich, and mucosal cells. Under a low water permeability (0.12 +/- 0.10 mkl/(min.cm2)) the distribution of intramembrane particles (IMP) in the apical cell membrane was the same as in the most cell plasma membranes studied with freeze-fracture method. Under rising osmotic permeability and water absorption (0.43 +/- 0.05 mkl/(min.cm2)) the IMP distribution did not change. In these conditions, the quantity of fusion sites between granule membranes and the apical membrane increased, and the intercellular spaces in basolateral epithelial region were diluted. A a low water permeability, in addition to usual microtubules, bundles of noncentrosomal microtubules with associated osmiophilic globules were revealed. A comparative analysis has been made of the present evidence and previously obtained data on the frog urinary bladder epithelium.
Buscar en Google
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Agua
/
Absorción Intestinal
/
Mucosa Intestinal
/
Intestino Grueso
Límite:
Animals
Idioma:
Ru
Revista:
Tsitologiia
Año:
2001
Tipo del documento:
Article
Pais de publicación:
Rusia