Is melatonin circadian rhythm a physiological feature associated with healthy longevity? A study of long-living subjects and their progeny.

The study investigates the circadian rhythm (CR) of urinary 6-sulphatoxy-melatonin (aMT6s) in long-living (longevous) subjects and their progeny. The aim is to detect whether or not the melatonin CR is a physiological feature associated with healthy longevity. The aMT6s CR was investigated in 10 longevous subjects, 8 of their children and 9 of their grandchildren, all in good health.

Lower 24-h blood pressure regimen in subjects with a familial genealogy of longevity.

Objective: This study investigates the 24-h blood pressure (BP) pattern in longevous subjects and their progeny, in order to validate the hypothesis that the human beings who live beyond their longest expectancy of life should be protected from developing hypertension. Such a characteristic feature is supposed to be a biological aspect of human longevity which can be transmitted to the progeny.

Materials And Methods: The study was carried out on 92 elderly subjects, (45 M, 47 W, 76-102 years), and 28 firstborn descendants of the first (7 M, 7 W, 36-55 years) and second (7 M, 7 W, 16-26 years) generation, in clinical health.

Effects of intravenous administration of brain phospholipids on gonadotropin release in man.

Administration of 600 mg of brain phospholipids i.v. in normal adult volunteers results in a significant decrease of the testosterone circulating levels.