Abstract
Immune activation not only accompanies inflammation in various disorders including infections, autoimmune syndromes and cancer, but it also represents a characteristic feature of ageing. Immune deviations which are most widely expressed in the elderly include increased neopterin production and tryptophan breakdown. These biochemical events result from the activation of the immune system and are preferentially triggered by pro-inflammatory stimuli, such as the Th1-type cytokine interferon-γ. They seem to play a role in the development of several age-related disorders and might be involved in the pathogenesis of common symptoms, including neurobehavioral disorders (e.g., cognitive and mood disturbances), anemia, cachexia, weight-loss but also immunodeficiency. Concentrations of the biomarkers neopterin and Kyn/Trp were found to be predictive of overall disease specific mortality in coronary artery disease, infections and various types of cancer. Immune activation and inflammation are also accompanied by high output of reactive oxygen species and thereby may lead to the development of oxidative stress and contribute to the vitamin deficiency which is often observed in the elderly. Accordingly, increases in neopterin were found to correlate with a substantial decline in key vitamins, including folate and vitamin-B6, - B12, -C, -D and -E.
Keywords: Aging, neopterin, tryptophan breakdown, inflammation, antioxidants, vitamins.
Current Pharmaceutical Design
Title:Activated Immune System and Inflammation in Healthy Ageing: Relevance for Tryptophan and Neopterin Metabolism
Volume: 20 Issue: 38
Author(s): Lucile Capuron, Simon Geisler, Katharina Kurz, Friedrich Leblhuber, Barbara Sperner-Unterweger and Dietmar Fuchs
Affiliation:
Keywords: Aging, neopterin, tryptophan breakdown, inflammation, antioxidants, vitamins.
Abstract: Immune activation not only accompanies inflammation in various disorders including infections, autoimmune syndromes and cancer, but it also represents a characteristic feature of ageing. Immune deviations which are most widely expressed in the elderly include increased neopterin production and tryptophan breakdown. These biochemical events result from the activation of the immune system and are preferentially triggered by pro-inflammatory stimuli, such as the Th1-type cytokine interferon-γ. They seem to play a role in the development of several age-related disorders and might be involved in the pathogenesis of common symptoms, including neurobehavioral disorders (e.g., cognitive and mood disturbances), anemia, cachexia, weight-loss but also immunodeficiency. Concentrations of the biomarkers neopterin and Kyn/Trp were found to be predictive of overall disease specific mortality in coronary artery disease, infections and various types of cancer. Immune activation and inflammation are also accompanied by high output of reactive oxygen species and thereby may lead to the development of oxidative stress and contribute to the vitamin deficiency which is often observed in the elderly. Accordingly, increases in neopterin were found to correlate with a substantial decline in key vitamins, including folate and vitamin-B6, - B12, -C, -D and -E.
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Cite this article as:
Capuron Lucile, Geisler Simon, Kurz Katharina, Leblhuber Friedrich, Sperner-Unterweger Barbara and Fuchs Dietmar, Activated Immune System and Inflammation in Healthy Ageing: Relevance for Tryptophan and Neopterin Metabolism, Current Pharmaceutical Design 2014; 20 (38) . https://dx.doi.org/10.2174/1381612820666140317110217
DOI https://dx.doi.org/10.2174/1381612820666140317110217 |
Print ISSN 1381-6128 |
Publisher Name Bentham Science Publisher |
Online ISSN 1873-4286 |
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