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J Appl Physiol 72: 8-14, 1992;
8750-7587/92 $5.00
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Journal of Applied Physiology, Vol 72, Issue 1 8-14, Copyright © 1992 by American Physiological Society

ARTICLES

Modulation of NK cell activity by moderate intensity endurance training and chronic ethanol consumption

S. E. Blank, J. O. Johansson, M. M. Origines 4th and G. G. Meadows
College of Pharmacy and Pharmacology/Toxicology Graduate Program, Washington State University, Pullman 99164-6510.

Chronic ethanol consumption can suppress natural killer (NK) cell activity. Exercise after ethanol administration may enhance blood ethanol clearance, which may benefit the immune response. This study examined the effects of moderate intensity endurance training and chronic ethanol consumption (20% wt/vol) on splenic NK cell activity. Mice were assigned to one of four groups: sedentary, water drinking (SED-H2O); sedentary, ethanol consuming (SED-EtOH); trained, water drinking (TR-H2O), and trained, ethanol consuming (TR-EtOH). TR groups ran 60 min/day, 5 days/wk, at 12 m/min for 10 wk. Mice were killed 48 h after exercise. Baseline NK cell activity was suppressed 30% in TR and EtOH groups compared with SED-H2O controls. Activation with recombinant human interleukin-2 increased cytolytic activity in all groups four- to fivefold. These results indicate that training did not abrogate the effects of chronic ethanol consumption on NK cell activity. Furthermore, moderate endurance training may contribute to suppressed nylon wool-enriched NK cell activity in murine splenocytes for as long as 48 h after exercise.


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