[THE ROLE OF THE PI3-KINASE IN THE FAST NONGENOMIC ALDOSTERONE EFFECTS IN THE PRINCIPAL CELLS OF THE CORTICAL COLLECTING DUCT OF THE RAT KIDNEY IN THE POSTNATAL ONTOGENESIS]

Autor: N S, Logvinenko, L E, Katlova, E I, Solenov, L N, Ivanova
Rok vydání: 2018
Předmět:
Zdroj: Rossiiskii fiziologicheskii zhurnal imeni I.M. Sechenova. 102(2)
ISSN: 0869-8139
Popis: The involvement of wortmannin (10 -5 M), phosphatidyl inositol 3-kinase (PI3K) blocker, in the implementation of the rapid nongenomic aldosterone (10 nM) effects on the intracellular sodium (Na i +) and the principal cell volume of cortical collecting duct (CCD) of 10-day and adult rat kidney CCD was studied. Using fluorescence microscopy with intracellular dye Na Green and Calcein we found that wortmannin weakened the effect of aldosterone on the Na i + at low sodium in the extracellular medium (14 mM NaCl), and slowed the rate of reduction of the principal cell volume in the presence of aldosterone at the hypoosmotic shock (240/140 mOsm) since 10 days of age. The findings suggest the participation of phosphatidylinositol pathway in the fast nongenomic aldosterone effects (seconds and minutes) at the early stage of postnatal ontogenesis.
Databáze: OpenAIRE