Acute phase response in exercise: interaction of age and vitamin E on neutrophils and muscle enzyme release
| Autor: | Maria A. Fiatarone, Joseph G. Cannon, Simin Nikbin Meydani, S. F. Orencole, William J. Evans, Mohsen Meydani, Roger A. Fielding, Jeffrey B. Blumberg |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Adult
Male Vitamin Aging Lipid Peroxides medicine.medical_specialty Neutrophils Physiology medicine.medical_treatment Physical exercise Lipid peroxidation Leukocyte Count chemistry.chemical_compound Superoxides Physiology (medical) Internal medicine medicine Humans Vitamin E Acute-Phase Reaction Creatine Kinase Exercise biology Superoxide Muscles Acute-phase protein Neutrophilia Endocrinology chemistry biology.protein Creatine kinase medicine.symptom |
| Zdroj: | American Journal of Physiology-Regulatory, Integrative and Comparative Physiology. 259:R1214-R1219 |
| ISSN: | 1522-1490 0363-6119 |
| DOI: | 10.1152/ajpregu.1990.259.6.r1214 |
| Popis: | everal host defense responses and metabolic reactions that occur during infection have been observed after exercise. We hypothesized that these reactions, known as the “acute phase response,” contribute to the breakdown and clearance of damaged tissue after exercise. This hypothesis was tested with 21 male volunteers representing two ranges of age (22-29 and 55-74 yr), who ran downhill on an inclined treadmill to accentuate damaging eccentric muscular contractions. The subject groups were further divided in a double-blind placebo-controlled protocol, which examined the influence of 48 days of dietary vitamin E supplementation before the exercise. All subjects were monitored for 12 days after exercise for changes in circulating leukocytes, superoxide release from neutrophils, lipid peroxidation, and efflux of the intramuscular enzyme creatine kinase (CK) into the circulation. Among those receiving placebo, the less than 30-yr-old subjects responded to exercise with a significantly greater neutrophilia and higher plasma CK concentrations than the greater than 55-yr-old subjects. Dietary supplementation with vitamin E tended to eliminate the differences between the two age groups, primarily by increasing the responses of the greater than 55-yr-old subjects. At the time of peak concentrations in the plasma, CK correlated significantly with superoxide release from neutrophils. The association of enzyme efflux with neutrophil mobilization and function supports the concept that neutrophils are involved in the delayed increase in muscle membrane permeability after damaging exercise. |
| Databáze: | OpenAIRE |
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