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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
6
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pubmed:dateCreated |
1997-4-1
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pubmed:abstractText |
Fourteen healthy male subjects were studied under resting conditions for 24 or 48 h. The 24-h variations of ACTH and cortisol with peaks in the morning were confirmed. Interleukin-2 release was profoundly reduced at 8: 00. A cosine function could be fitted to lymphocyte subpopulations including populations such as T helper-memory cells (CD4+/CDw29) and HLA-DR-bearing cells displaying peak values during the night and minimal values at 9:00. Numbers of natural killer cells (CD57) were not correlated to other cell populations and no rhythm could be detected. Interleukin- 1 beta was detectable in some plasma samples only with an interleukin- 1 ELISA kit (Quantakine HS(R)), but neither a 24-h rhythm nor reproducible results could be obtained for day 1 and 2 of the study. We conclude that there might be a temporal relation between the parameters analyzed: Higher levels of endogenous cortisol in the morning hours probably inhibit the cellular interleukin-2 synthesis and are responsible for an enhanced migration of lymphocytes from the blood into the tissues of the reticuloendothelial system. These results might be indicative of a circadian organization of the immune system which may play a role in both physiological and pathological functioning.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Adrenocorticotropic Hormone,
http://linkedlifedata.com/resource/pubmed/chemical/Cytokines,
http://linkedlifedata.com/resource/pubmed/chemical/Hydrocortisone,
http://linkedlifedata.com/resource/pubmed/chemical/Interleukin-1,
http://linkedlifedata.com/resource/pubmed/chemical/Interleukin-2,
http://linkedlifedata.com/resource/pubmed/chemical/Phytohemagglutinins
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pubmed:status |
MEDLINE
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pubmed:month |
Dec
|
pubmed:issn |
0742-0528
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pubmed:author | |
pubmed:issnType |
Print
|
pubmed:volume |
13
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
423-34
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:8974188-Adrenocorticotropic Hormone,
pubmed-meshheading:8974188-Adult,
pubmed-meshheading:8974188-Circadian Rhythm,
pubmed-meshheading:8974188-Cytokines,
pubmed-meshheading:8974188-Humans,
pubmed-meshheading:8974188-Hydrocortisone,
pubmed-meshheading:8974188-Interleukin-1,
pubmed-meshheading:8974188-Interleukin-2,
pubmed-meshheading:8974188-Lymphocyte Count,
pubmed-meshheading:8974188-Lymphocyte Subsets,
pubmed-meshheading:8974188-Male,
pubmed-meshheading:8974188-Phytohemagglutinins
|
pubmed:year |
1996
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pubmed:articleTitle |
Twenty-four-hour analysis of lymphocyte subpopulations and cytokines in healthy subjects.
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pubmed:affiliation |
Clinic of Anaesthesiology und Operative Intensive Care, Christian-Albrechts-University, Kiel, Germany.
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pubmed:publicationType |
Journal Article,
In Vitro
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