Endocrine Abstracts

An increasing proportion of people living in our 24/7 culture complain about insomnia symptoms, i.e., they experience problems to fall and/or stay asleep. As demonstrated by epidemiological studies, chronic sleep loss is correlated with weight gain. To investigate whether sleep loss would alter energy metabolism in favour of weight gain, my lab therefore performed a series of sleep loss experiments in metabolically healthy normal-weight subjects. These studies demonstrated tha...

Background: Central nervous insulin is critically involved in the regulation of body weight and memory processing. Long-term administration of intranasal insulin reduces body weight in men but not in women while improving hippocampus-dependent memory processing in both genders. Here, acute effects of intranasal insulin on food intake and memory functions were studied in men and women.Methods: Thirty-two healthy, normal-weight subjects (14 men, 18 women) ...

Background: Secretory activity of the hypothalamo-pituitary–adrenal (HPA) axis typically increases during the second half of nocturnal sleep. Assuming that this rise in ACTH and cortisol levels occurs in response to the negative energy balance induced by nocturnal fasting and concomitant increases in cerebral glucose consumption during REM sleep, we examined the effects of glucose infusion on nocturnal HPA axis activity during wake and sleep periods.<p class="abstext"...