alpha-, beta 1- and beta 2-adrenergic receptors in the kidney mediate vasoconstriction, renin secretion and vasodilatation, respectively. Blockade of beta-receptors may therefore be expected to influence renal blood flow and possibly glomerular filtration rate by intrarenal effects as well as by reducing cardiac output and blood pressure.
Vampires proper originate in folklore widely reported from Eastern Europe in the late 17th and 18th centuries. These tales formed the basis of the vampire legend that later entered Germany and England, where they were subsequently embellished and popularized.ccording to the paper, if the first vampire had appeared on 1 January 1600, and it fed once a month (which is less often than what is depicted in films and folklore), and every victim turned into a vampire, then within two and a half years the entire human population of the time would have become vampires.
Count Dracula, a fictional character in the Dracula novel, was inspired by one of the best-known figures of Romanian history, Vlad Dracula, nicknamed Vlad Tepes (Vlad the Impaler), who was the ruler of Walachia at various times from 1456-1462.