Cover

Acute Topics in Sport Nutrition

Editor(s): Lamprecht M. (Graz) 
Table of Contents
Vol. 59, 2012
Section title: Nutritional Interventions and Athlete’s Health
Lamprecht M (ed): Acute Topics in Sport Nutrition. Med Sport Sci. Basel, Karger, 2013, vol 59, pp 57–61
(DOI:10.1159/000341967)

Pleuran (β-Glucan from Pleurotus ostreatus): An Effective Nutritional Supplement against Upper Respiratory Tract Infections?

Majtan J.
Institute of Zoology, Slovak Academy of Sciences, and Department of Microbiology, Faculty of Medicine, Slovak Medical University, Bratislava, Slovakia

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Article / Publication Details

First-Page Preview
Abstract of Nutritional Interventions and Athlete’s Health

Published online: 10/15/2012
Cover Date: 2013

Number of Print Pages: 5
Number of Figures: 0
Number of Tables: 0

ISBN: 978-3-8055-9992-4 (Print)
eISBN: 978-3-8055-9993-1 (Online)

Abstract

Prolonged and high-intensity exercise affects immune function and leads to an increased risk of upper respiratory tract infections (URTIs) in endurance athletes. The increased incidence of URTI symptoms may negatively affect athletic performance. Various nutritional supplements have been tested in the last decade for their ability to prevent developing of URTIs or reduce their incidence. One of the most promising nutritional supplements is β-glucan, a well-known immunomodulator with positive effects on functioning of immunocompetent cells. However, β-glucans are a diverse group of molecules that vary in macromolecular structure, solubility, viscosity, molecular weight and biological activity. This fact is supported by results from recent human clinical studies where β-glucans of different origin and properties differed in ability to prevent or reduce incidence of URTIs in athletes. It has been found that pleuran, a unique insoluble β-glucan isolated from mushroom Pleurotus ostreatus, significantly reduced the incidence of URTI symptoms in athletes. In addition, it was able to increase the number of circulating natural killer cells and to prevent reduction of natural killer cell activity. Contrarily, soluble oat β-glucan supplementation did not alter URTI incidence in endurance athletes. This difference suggests that the immunomodulatory capacity of β-glucans is strongly dependent on solubility and structural factors such as backbone structure and degree of branching. This review refers to using pleuran as a natural supplement that is able to protect endurance athletes against development of URTI.


Article / Publication Details

First-Page Preview
Abstract of Nutritional Interventions and Athlete’s Health

Published online: 10/15/2012
Cover Date: 2013

Number of Print Pages: 5
Number of Figures: 0
Number of Tables: 0

ISBN: 978-3-8055-9992-4 (Print)
eISBN: 978-3-8055-9993-1 (Online)


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Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in goverment regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug.
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