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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Nonselective beta blockade attenuates the recruitment of CD62L(-)T lymphocytes following exercise.

Exercise induces a selective redistribution of CD62L(-) T lymphocytes. This study examined the effects of beta adrenergic receptor blockade on this phenomenon. Twelve healthy men were exercised to exhaustion on a treadmill prior to and following 1 week of treatment with the nonselective beta antagonist propranolol or the beta1 selective antagonist metoprolol. Dynamic exercise resulted in a significant lymphocytosis (p < 0.001). CD8(+)CD62L(-) T cells showed a greater than 3-fold increase in response to exercise (p < 0.001) as compared to CD8(+)CD62L(+) T cells, which showed a more modest increase. Treatment with the nonselective beta antagonist propranolol significantly attenuated the preferential increase of circulating CD8(+)CD62L(-) lymphocytes (p = 0.01) but had no effect on CD8(+)CD62L(+) T cells. Treatment with the beta1 selective antagonist metoprolol did not affect the response of either subset. Our findings replicate a prior study indicating that CD62L expression influences T lymphocyte trafficking in response to exercise and extends those findings by showing that this phenomenon is mediated, in part, via the beta2-adrenergic receptor.[1]

References

  1. Nonselective beta blockade attenuates the recruitment of CD62L(-)T lymphocytes following exercise. Mills, P.J., Rehman, J., Ziegler, M.G., Carter, S.M., Dimsdale, J.E., Maisel, A.S. European journal of applied physiology and occupational physiology. (1999) [Pubmed]
 
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