| Autor: |
Chekman IS, Budarin LI, Nurishchenko NE, Ivanov LV, Pogrebnoĭ PV |
| Jazyk: |
ruština |
| Zdroj: |
Biulleten' eksperimental'noi biologii i meditsiny [Biull Eksp Biol Med] 1985 Aug; Vol. 100 (8), pp. 208-10. |
| Abstrakt: |
The initial stage of interaction of beta-adrenomimetics and beta-adrenoblockers with specific membrane binding sites is characterized by different patterns of thermodynamic parameters. Administration of isadrin results in a decrease of entropy and enthalpy, which reflects the primary binding reaction and agonist-specific receptor isomerization to the conformational form activating adenylate cyclase. Anaprilin and alpheprol do not change the receptor conformation and participate only in the primary binding reaction which is marked by a decrease in enthalpy and a rise of entropy in the course of interaction of beta-adrenoblockers with specific membrane binding sites. The different patterns of thermodynamic parameters under the effect of beta-adrenomimetics and beta-adrenoblockers on plasma membranes are explained by the different influence of these substances on the mobility of membrane lipids, i.e. on the viscosity of plasma membranes. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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