Open Access
CC BY-NC-ND 4.0 · Int J Sports Med 2022; 43(12): 1023-1032
DOI: 10.1055/a-1827-3124
Physiology & Biochemistry

Plasma Endogenous Endotoxin Core Antibody Response to Exercise in Endurance Athletes

Pascale Young
1   Nutrition Dietetics & Food, Monash University Faculty of Medicine Nursing and Health Sciences, Clayton, Australia
,
Christopher Rauch
1   Nutrition Dietetics & Food, Monash University Faculty of Medicine Nursing and Health Sciences, Clayton, Australia
,
Isabella Russo
1   Nutrition Dietetics & Food, Monash University Faculty of Medicine Nursing and Health Sciences, Clayton, Australia
,
Stephanie Gaskell
1   Nutrition Dietetics & Food, Monash University Faculty of Medicine Nursing and Health Sciences, Clayton, Australia
,
Zoe Davidson
1   Nutrition Dietetics & Food, Monash University Faculty of Medicine Nursing and Health Sciences, Clayton, Australia
,
Ricardo J. S. Costa
1   Nutrition Dietetics & Food, Monash University Faculty of Medicine Nursing and Health Sciences, Clayton, Australia
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Abstract

The study aimed to investigate the impact of laboratory-controlled exertional and exertional-heat stress on concentrations of plasma endogenous endotoxin core antibody (EndoCAb). Forty-four (males n=26 and females n=18) endurance trained (V̇ O 2max 56.8min/kg/min) participants completed either: P1–2h high intensity interval running in 23°C ambient temperature (Tamb), P2–2h running at 60% V̇ O2max in 35°C Tamb, or P3–3h running at 60% V̇ O2max in 23°C Tamb. Blood samples were collected pre- and post-exercise to determine plasma IgM, IgA, and IgG concentrations. Overall resting pre-exercise levels for plasma Ig were 173MMU/ml, 37AMU/ml, and 79GMU/ml, respectively. Plasma IgM concentration did not substantially change pre- to post-exercise in all protocols, and the magnitude of pre- to post-exercise change for IgM was not different between protocols (p=0.135). Plasma IgA and IgG increased pre- to post-exercise in P2 only (p=0.017 and p=0.016, respectively), but remained within normative range (35–250MU/ml). P2 resulted in greater disturbances to plasma IgA (p=0.058) and IgG (p=0.037), compared with P1 and P3. No substantial differences in pre-exercise and exercise-associated change was observed for EndoCAb between biological sexes. Exertional and exertional-heat stress resulted in modest disturbances to systemic EndoCAb responses, suggesting EndoCAb biomarkers presents a low sensitivity response to controlled-laboratory experimental designs within exercise gastroenterology.



Publikationsverlauf

Eingereicht: 23. Januar 2022

Angenommen: 05. April 2022

Accepted Manuscript online:
14. April 2022

Artikel online veröffentlicht:
22. Juli 2022

© 2022. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).

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