The experiments test the hypothesis that beta-adrenergic receptor is an independent unit that can be transferred from one adenylate cyclase [ATP pyrophosphate-lyase (cyclizing), EC 4-6-1-1[ system to another. Turkey erythrocytes in which the catalytic activity of adenylate cyclase had been inactivated by N-ethylmaleimide or by heat contributed the beta-adrenergic receptor. Friend erythroleukemi...

we have previously shown the adjuvant activity of propranolol (prp) (a beta-adrenergic receptor antagonist) using a vaccine model for salmonella typhimurium. in this study prp was used as an adjuvant in combination with plasmodium  berghei  (p. berghei)  whole blood stage (pwbs) antigens. balb/c mice were immunized three times with a 2-week interval, either pwbs vaccine alone or in combination ...

Stimulation of alpha- and beta-adrenergic receptors in the bovine mammary gland affects milking characteristics such as milk yield and peak flow rate. The aim of this study was to detect possible correlations between milkability, adrenergic receptor binding capacity and receptor expression at the mRNA level. In addition, dose-response relationships of alpha- and beta-adrenergic receptor stimula...

The responsiveness of central nervous system alpha 2-adrenergic receptors in the neural control of renal function was compared in conscious spontaneously hypertensive rats (SHR) and normotensive Wistar-Kyoto rats (WKY) on normal or high sodium intake (3-4 weeks of 1% NaCl for drinking). The responsiveness of central alpha 2-adrenergic receptors was determined by comparing among groups the dose-...

Both nonlinear and fractal properties of beat-to-beat R-R interval variability signal (RRV) of freely moving lizards (Gallotia galloti) were studied in baseline and under autonomic nervous system blockade. Nonlinear techniques allowed us to study the complexity, chaotic behavior, nonlinearity, stationarity, and regularity over time of RRV. Scaling behavior of RRV was studied by means of fractal...

Intradialysis hypotension (IDH) is the most common complication during hemodialysis procedure. Midodrine, an oral α-1 adrenergic agonist, commonly used to prevent IDH. However, limited data available demonstrate midodrine effectiveness in prevention of IDH high-risk patients.