Changes in transcriptional output of XXXX peripheral blood mononuclear cells following resistance exercise.

@entity1 @entity32 @entity121 @entity13056 @entity57242 @entity20503 @entity5064 @entity880 @entity1495 @entity19671
Various types of exercise alter the population of circulating peripheral blood mononuclear cells (PBMCs) and change their transcriptional output. This work examines changes in PBMC populations and transcription in response to resistance exercise training (RET), and identify key transcriptional changes in PBMCs that may play a role in altering peripheral tissues in response to RET. Ten resistance-trained @entity1 (20-24 years), performed an acute bout of RET for ~30 min following a 12 h fast. Venous blood was sampled at rest, immediately following exercise, and at 2 h post-exercise and analyzed for total and differential leukocytes and global gene expression using Affymetrix Genechips. Results showed elevated leukocytes, monocytes, lymphocytes, and @entity880 values immediately post-exercise (P < 0.05) over baseline. At 2 h post-exercise, leukocytes, and granulocytes remained elevated (P < 0.05), whereas lymphocytes were lower than (P < 0.05) baseline values. Initial microarray results showed the greatest transcriptional changes in pathways related to immune response, @entity32 , and cellular communication. The change in PBMC population (2 h time point) correlated with a dramatic decrease in the expression of @entity19671 , and @entity57242 , markers of lymphocyte populations. At the 2 h recovery time point upregulation of @entity1495 , @entity5064 , @entity13056 , and @entity20503 suggest an induction in @entity121 and repair during this time frame. These results demonstrate that an acute bout of RET disrupts cellular homeostasis, induces a transient redistribution of certain leukocytes, and results in transcriptional changes in PBMCs translating into systemic changes in response to RET.
