Linked Life Data

3040849

Source:http://linkedlifedata.com/resource/pubmed/id/3040849

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1987-10-22
pubmed:abstractText
24-h plasma patterns of ACTH and cortisol were established in 6 subjects who had standard meals and in 4 subjects under continuous enteral nutrition. Temporal relationships between both hormones were analyzed. The individual assay data were subjected to time-series analyses to identify the periods of the oscillations in the plasma levels. The spontaneously occurring cortisol peaks were preceded by increases in ACTH levels, but z-score transformations clearly revealed that ACTH and cortisol were not quantitatively linked throughout the day. Individual subjects' power spectra gave evidence of a predominant periodicity in the oscillations of both hormones. These periodicities varied between individuals. They were 55-140 min for ACTH and 95-180 min for cortisol, indicating that, on occasion, a single cortisol peak may be initiated by two ACTH peaks. Cross spectral analysis of the individual data gave coherence spectra with a large peak which accounted for a substantial concordance of their period length, and cross variance spectra showed a consistent phase relationship between both hormones. These time series analyses applied to the data further support the concept that ACTH is the stimulating factor of cortisol release under basic conditions.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0391-4097
pubmed:author
pubmed:issnType
Print
pubmed:volume
10
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
261-6
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1987
pubmed:articleTitle
Ultradian plasma corticotropin and cortisol rhythms: time-series analyses.
pubmed:publicationType
Journal Article