Linked Life Data

19032118

Source:http://linkedlifedata.com/resource/pubmed/id/19032118

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
12
pubmed:dateCreated
2008-11-26
pubmed:abstractText
OBJECTIVE AND SCOPE: This review article used data from an extensive literature search (including MEDLINE database searches) to explore the relationships between sleep, memory and Alzheimer's disease (AD). The importance of taking into account circadian rhythmicity and acetylcholine (ACh) levels when considering acetylcholinesterase inhibitors, galantamine in particular, in the treatment of patients with AD is discussed. REVIEW FINDINGS: Moderate changes of circadian rhythms may occur as part of the normal ageing process, but patients with AD exhibit circadian rhythm disturbances extending beyond those observed in non-demented elderly and this may lead to severe disruption of the sleep-wake cycle. Indeed, ACh plays an active role in maintaining a normal sleep pattern, which is important for memory consolidation. Low levels of ACh during slow-wave sleep compared with wakefulness have been shown to be critical for the consolidation of declarative memory. This suggests the existence of a circadian rhythm in central cholinergic transmission which modulates memory processes, with high ACh levels during wakefulness and reduced levels during slow-wave sleep. When using cholinesterase inhibitors to stimulate central cholinergic transmission in AD, respecting the natural circadian fluctuations of central cholinergic transmission may therefore be an important factor for patient improvement. Interfering with nocturnal cholinergic activity can add to memory problems and induce sleep disorders. Available data suggest that the type of cholinesterase inhibitor used and the time of administration may be critical with regard to the possible development of such disturbances. Plasma levels of galantamine, for example, are high during the waking day and lower at night, supporting a cholinergic stimulation that mirrors the physiological circadian rhythm of cholinergic activity. This may have beneficial implications with regard to sleep and memory. CONCLUSIONS: The pharmacokinetic properties of cholinesterase inhibitors may need to be taken into account to avoid interference with sleep architecture and to achieve optimum benefits from treatment on cognitive processes.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
1473-4877
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
24
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3357-67
pubmed:dateRevised
2011-1-11
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Importance of circadian rhythmicity in the cholinergic treatment of Alzheimer's disease: focus on galantamine*.
pubmed:affiliation
Université de la Méditerranée, Institut de Biologie du Développement de Marseille-Luminy, Marseille, France. andre.nieoullon@ibdml.univ-mrs.fr
pubmed:publicationType
Journal Article, Review, Research Support, Non-U.S. Gov't