Effect of a cyclooxygenase-2 inhibitor on postexercise muscle protein synthesis in humans

Nicholas A. Burd, Jared Dickinson, Jennifer K. LeMoine, Chad C. Carroll, Bridget E. Sullivan, Jacob M. Haus, Bozena Jemiolo, Scott W. Trappe, Gordon M. Hughes, Charles E. Sanders, Todd A. Trappe

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Nonselective blockade of the cyclooxygenase (COX) enzymes in skeletal muscle eliminates the normal increase in muscle protein synthesis following resistance exercise. The current study tested the hypothesis that this COX-mediated increase in postexercise muscle protein synthesis is regulated specifically by the COX-2 isoform. Sixteen males (23 ± 1 yr) were randomly assigned to one of two groups that received three doses of either a selective COX-2 inhibitor (celecoxib; 200 mg/dose, 600 mg total) or a placebo in double-blind fashion during the 24 h following a single bout of knee extensor resistance exercise. At rest and 24 h postexercise, skeletal muscle protein fractional synthesis rate (FSR) was measured using a primed constant infusion of [2H5]phenylalanine coupled with muscle biopsies of the vastus lateralis, and measurements were made of mRNA and protein expression of COX-1 and COX-2. Mixed muscle protein FSR in response to exercise (P < 0.05) was not suppressed by the COX-2 inhibitor (0.056 ± 0.004 to 0.108 ± 0.014%/h) compared with placebo (0.074 ± 0.004 to 0.091 ± 0.005%/h), nor was there any difference (P > 0.05) between the placebo and COX-2 inhibitor postexercise when controlling for resting FSR. The COX-2 inhibitor did not influence COX-1 mRNA, COX-1 protein, or COX-2 protein levels, whereas it did increase (P < 0.05) COX-2 mRNA (3.0 ± 0.9-fold) compared with placebo (1.3 ± 0.3-fold). It appears that the elimination of the postexercise muscle protein synthesis response by nonselective COX inhibitors is not solely due to COX-2 isoform blockade. Furthermore, the current data suggest that the COX-1 enzyme is likely the main isoform responsible for the COX-mediated increase in muscle protein synthesis following resistance exercise in humans.

Original languageEnglish (US)
JournalAmerican Journal of Physiology - Endocrinology and Metabolism
Volume298
Issue number2
DOIs
StatePublished - Feb 2010
Externally publishedYes

Fingerprint

Muscle Proteins
Cyclooxygenase 2 Inhibitors
Cyclooxygenase 2
Cyclooxygenase 1
Prostaglandin-Endoperoxide Synthases
Protein Isoforms
Celecoxib
Placebos
Messenger RNA
Skeletal Muscle
Proteins
Cyclooxygenase Inhibitors
Quadriceps Muscle
Enzymes
Phenylalanine
Knee
Biopsy
Muscles

Keywords

  • [H]phenylalanine
  • Celecoxib
  • Resistance exercise

ASJC Scopus subject areas

  • Physiology
  • Physiology (medical)
  • Endocrinology, Diabetes and Metabolism

Cite this

Burd, N. A., Dickinson, J., LeMoine, J. K., Carroll, C. C., Sullivan, B. E., Haus, J. M., ... Trappe, T. A. (2010). Effect of a cyclooxygenase-2 inhibitor on postexercise muscle protein synthesis in humans. American Journal of Physiology - Endocrinology and Metabolism, 298(2). https://doi.org/10.1152/ajpendo.00423.2009

Effect of a cyclooxygenase-2 inhibitor on postexercise muscle protein synthesis in humans. / Burd, Nicholas A.; Dickinson, Jared; LeMoine, Jennifer K.; Carroll, Chad C.; Sullivan, Bridget E.; Haus, Jacob M.; Jemiolo, Bozena; Trappe, Scott W.; Hughes, Gordon M.; Sanders, Charles E.; Trappe, Todd A.

In: American Journal of Physiology - Endocrinology and Metabolism, Vol. 298, No. 2, 02.2010.

Research output: Contribution to journalArticle

Burd, NA, Dickinson, J, LeMoine, JK, Carroll, CC, Sullivan, BE, Haus, JM, Jemiolo, B, Trappe, SW, Hughes, GM, Sanders, CE & Trappe, TA 2010, 'Effect of a cyclooxygenase-2 inhibitor on postexercise muscle protein synthesis in humans', American Journal of Physiology - Endocrinology and Metabolism, vol. 298, no. 2. https://doi.org/10.1152/ajpendo.00423.2009
Burd, Nicholas A. ; Dickinson, Jared ; LeMoine, Jennifer K. ; Carroll, Chad C. ; Sullivan, Bridget E. ; Haus, Jacob M. ; Jemiolo, Bozena ; Trappe, Scott W. ; Hughes, Gordon M. ; Sanders, Charles E. ; Trappe, Todd A. / Effect of a cyclooxygenase-2 inhibitor on postexercise muscle protein synthesis in humans. In: American Journal of Physiology - Endocrinology and Metabolism. 2010 ; Vol. 298, No. 2.
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