Light and electron microscopical observations on the macula densa of the Syrian hamster kidney.
AUTOR(ES)
Sikri, K L
RESUMO
The ultrastructure of the macula densa of the hamster kidney is, in general, similar to that reported for the few other species which have been studied. Their structure indicates that macula densa cells differ in a number of important respects from those of the rest of the thick ascending limb and the distal convoluted tubule. Among these differences may be mentioned the more widely distributed mitochondria with their circular and elliptical profiles; the extensive subsurface vacuolation and the irregular and shallow folds of the basal plasma membrane. Unlike some reports on other species, however, the Golgi complexes were not restricted to an infranuclear position, but were observed in a variety of situations. It was also observed that T-H glycoprotein characteristically associated with the plasma membranes of the cells of the thick ascending limb and the distal convoluted tubule was invariably absent in the macula densa. The possible physiological implications of this and the other observations are discussed.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1233395Documentos Relacionados
- Lectin-binding sites and silver affinity of the macula densa basement membranes in the rabbit kidney.
- Light microscopic and histochemical observations on the development of the palate in the Golden Syrian hamster.
- Electron and light microscopical observations and serological findings in rheumatoid arthritis.
- Light and electron microscopical observations on the Leydig cells of the scrotal and abdominal testes of naturally unilateral cryptorchid West African dwarf goats.
- Cyclooxygenase-2 is associated with the macula densa of rat kidney and increases with salt restriction.