Journal
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
Volume 32, Issue 7, Pages S377-S388Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/00005768-200007001-00002
Keywords
exercise; infection; burns; cancer; surgery; HIV
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FIELD, C. J., I. JOHNSON, and V. C. PRATT. Glutamine and arginine: immunonutrients for improved health. Med. Sci. Sports Exerc., Vol. 32, No. 7, Suppl., pp. S377-S388, 2000. There is considerable literature demonstrating that specific nutrients can influence immune function in health and disease. This review will examine the literature and the rational for classifying two amino acids, glutamine (gln) and arginine (arg), as immunonutrients during infections. An understanding of immune defenses during infections (virus, parasite. bacteria. protozoa) and metabolism of gin and arg by immune cells is necessary to understand how these nutrients can influence specific functions of the immune system. This review focuses on several key clinical studies in immunosuppressed individuals (burn patients, individuals with cancer and HIV infection, and those undergoing surgery or who have experienced major traumas) that have tested the hypothesis that the provision of gin and/or arg is beneficial to immune function and clinical outcome. These clinical studies support the dietary essentiality of these two nutrients for improving immune responses in most immunosuppressive states associated with high rates of infection. However, the role of these nutrients in modulating the immune changes that occur with exercise in healthy athletes demands additional experiments.
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