Document Detail

Rate of re-entrainment of circadian rhythms to advances of light-dark cycles may depend on ways of shifting the cycles.
MedLine Citation:
PMID:  2289129     Owner:  NLM     Status:  MEDLINE    
When an 8-h advance of a light-dark (LD) cycle was accomplished by shortening of one dark period by 8 h, the rat pineal N-acetyltransferase rhythm was abolished during the first 3 subsequent cycles and reappeared in its original waveform during the fifth cycle only. When the 8-h advance shift was accomplished by lengthening of two consecutive light periods by 8 h, the N-acetyltransferase rhythm persisted and attained its original waveform by 2 days earlier than under the former shift. Re-entrainment is thus more rapid when the advance shift is accomplished by twice delaying than by once advancing of the LD cycle by 8 h.
M Humlová; H Illnerová
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Brain research     Volume:  531     ISSN:  0006-8993     ISO Abbreviation:  Brain Res.     Publication Date:  1990 Oct 
Date Detail:
Created Date:  1991-04-01     Completed Date:  1991-04-01     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0045503     Medline TA:  Brain Res     Country:  NETHERLANDS    
Other Details:
Languages:  eng     Pagination:  304-6     Citation Subset:  IM    
Institute of Physiology, Czechoslovak Academy of Sciences, Prague.
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MeSH Terms
Arylamine N-Acetyltransferase / metabolism*
Circadian Rhythm*
Conditioning (Psychology)
Pineal Gland / enzymology,  physiology*
Rats, Inbred Strains
Reg. No./Substance:
EC N-Acetyltransferase

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