The project has now been nominated as one of the 40 “success stories” among EU-funded projects to be show-cased in a publication at the end of this year.
The topic of the project is important and timely: our environment is changing to a 24/7 society, which inevitably means that time spent in sleep decreases. What are the consequences of this reduction for human health and well-being? This is the central question of the present consortium.
The training network consists of 16 young Marie Curie Fellows from 12 countries, who are trained in the six consortium laboratories by experienced mentors. They are researching the role of sleep in the quality of life; in mood disorders, and how it can affect performance, accident rates, and cardiovascular diseases. Animal models complement the project aiming to understand the basic mechanisms underlying sleep regulation and thereby provide recommendations for the development of new hypnotics.
Although the work is only half way through, interesting results have already emerged. The Helsinki group has investigated the effect of partial sleep loss on human health using an experimental setup that resembles a normal working week. They found that following sleep restriction to 4 hours per night, an individual’s ability to perform complex tasks gradually decreased during the five days. Several changes in their immunological system were also recognized, e.g. increase in CRP (C-reactive protein), an indicator of defense reaction.
The Sociology of Sleep Group at the University of Surrey have shown the diverse ways in which the social context of everyday life has profound influences on sleep quality. Indepth interviews with women in Italy show how women’s sleep is severely disrupted by care-giving roles, especially for frail elderly relatives. Analysis of large-scale surveys has found strong social inequalities in sleep problems with poorer sleep recorded for people living in more disadvantaged social circumstances, such as with low income and low educational attainment. The Chronobiology Group at the University of Surrey have been investigating the effect of blue short wavelength light on circadian rhythms and sleep in the young and elderly. A reduced responsiveness to short wavelength light has been observed in older people and this may have implications for the design of lighting in elderly homes.
The group in Munich and Ingolstadt has first evidence for an influence of a chronic sleep disorder going along with severe sleepiness (narcolepsy) on the processing of emotional stimuli in the brain, suggesting that disturbed sleep regulation profoundly interferes with our well being and the interaction with the environment.
Basic research in the human sleep research laboratory of the University of Zürich revealed clear age-related changes in the impairment of sustained vigilant attention after one night without sleep. This finding is consistent with epidemiological studies and has important implications for the prevention of accidents associated with the loss of sleep.
The group from the University of Zurich, dedicated to animal research, recorded sleep in different mouse models under normal conditions and under enhanced sleep pressure attained by sleep deprivation of a few hours. The effect of pharmacological stimulation of different types of GABAA receptors was investigated. This research aims at opening new avenues for the development of hypnotics. The hypnotic efficacy, when based on normal sleep physiology, should be optimized and lead to less adverse effects.
The mentors recognize the pressing need to bring the results of this research network available to all people. Training of the Fellows includes, in addition to the scientific training, also training in communication with the general public. The Fellows are encouraged to write articles and give general presentations – each of them has written a description of their work, which is available on the website (www.sleep.fi) of the project.
Dr. Porkka-Heiskanen is very pleased that the EU has given this recognition to her project. She explains that “the success of this project was already founded in a previous project where the same consortium members worked together. It cannot be emphasized enough how important these long-term collaborations are. In addition to the high quality science, all mentors are genuinely interested in teaching, and have been actively engaged in development work at their own universities. The enthusiasm for science and the joy of sharing the knowledge is contagious!”
Consortium Members:University of Helsinki, Finland
- imagingUniversity of Surrey, UK
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