Linked Life Data

8163324

Source:http://linkedlifedata.com/resource/pubmed/id/8163324

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1994-5-20
pubmed:abstractText
Lymphocyte subsets, their responsiveness to mitogen and their capacity for glutamine oxidation and glycolysis were assessed in seven subjects before and after an acute bout of interval exercise, the purpose being to establish whether exercise is associated with alterations in lymphocyte metabolic capacities. The subjects exercised at 112% of their maximal work capacity (as determined by pre-test) on a treadmill and performed 25 repeat tests, each of 1 min duration interrupted by 2 min rest periods. Venous blood samples were taken at rest and 3 min following completion of exercise. Acute exercise was associated with significant decreases in the percentage of T- (p < 0.01) and B-cells (p < 0.01) and an increase in the percentage of NK-cells (p < 0.05). These changes were accompanied by a significant decrease in the responsiveness of peripheral blood lymphocytes to the mitogen concanavalin A (p < 0.05). Acute exercise was also associated with profound changes in the metabolic capacities of peripheral blood lymphocytes: rates of 14CO2 production from [U-14C]glutamine (19%: p < 0.05) and lactate (27%: p < 0.05) production were increased significantly in response to interval exercise. Linear regression analysis revealed significant correlation between the exercise-mediated changes (%) in T- and NK-cells and changes (%) in both lymphocyte responsiveness to concanavalin A and metabolic capacity, particularly glutamine oxidation to CO2. One interpretation of these data is that acute exercise promotes a redistribution in lymphocyte subsets, and that it is this redistribution that is the basis of both the impairment in lymphocyte responsiveness to mitogens and the increase in lymphocyte metabolic capacity, especially glutamine oxidation.(ABSTRACT TRUNCATED AT 250 WORDS)
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0172-4622
pubmed:author
pubmed:issnType
Print
pubmed:volume
15
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
36-41
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
Effects of acute exercise on lymphocyte subsets and metabolic activity.
pubmed:affiliation
Department of Biochemistry, University of Western Australia.
pubmed:publicationType
Journal Article