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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
3
|
| pubmed:dateCreated |
1997-4-3
|
| pubmed:abstractText |
The diurnal variations and their possible relations with endogenous catecholamines have been studied in 16 apparently healthy subjects (8 women and 8 men, between 22-35 years of age). A butterfly cannula was inserted into the flexure vein of the elbow at 8 h and at 20 h, a blood sample being taken after three 15-minute intervals. Leukocytes, lymphocytes, monocytes, and granulocytes were quantified in a cell counter while lymphocyte subpopulations were determined with flow cytometry in cells labelled with specific monoclonal antibodies. Plasma catecholamine concentrations were measured by high-pressure liquid chromatography. Significant differences for leukocyte circulating levels were found, as well as for all subpopulations measured at different times of day, save NK cells and monocytes. A statistically significant correlation was also found both between leukocytes, all subpopulations and epinephrine save B lymphocytes and NK cells, and between total lymphocytes, T lymphocytes, CD4, CD4/45RA+ subtypes and norepinephrine. In conclusion, diurnal rhythms were proved to exist in leukocyte and lymphocyte subpopulations; the significant correlation between these cells and catecholamine plasma levels suggests the presence of a possible mechanism that connects the cellular immunity with determined hormones.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:chemical | |
| pubmed:status |
MEDLINE
|
| pubmed:month |
Sep
|
| pubmed:issn |
0034-9402
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
52
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
143-8
|
| pubmed:dateRevised |
2004-11-17
|
| pubmed:meshHeading | |
| pubmed:year |
1996
|
| pubmed:articleTitle |
Lymphocyte subpopulations and catecholamines; daytime variations and relationships.
|
| pubmed:affiliation |
C.S. Virgen de las Nieves, Servicio de Análisis Clínicos, Granada, Spain.
|
| pubmed:publicationType |
Journal Article
|