Exhaustive Exercise Induces Gastrointestinal Syndrome through Reduced ILC3 and IL-22 in Mouse Model
| Autor: | Mantian Mi, Long Yi, Yu Yao, Hou Pengfei, Mengtin Chen, Li Yu, Yujie Huang, Xi Zhou, Yong Zhang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Blood Glucose
CD4-Positive T-Lymphocytes Male medicine.medical_specialty Cumulative Trauma Disorders Physical Therapy Sports Therapy and Rehabilitation Occludin Interleukin 22 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Immune system Intestinal mucosa Physical Conditioning Animal Internal medicine Animals Medicine Orthopedics and Sports Medicine Intestinal Mucosa Inflammation Lamina propria Intestinal permeability Glycogen business.industry Interleukins Interleukin 030229 sport sciences Nuclear Receptor Subfamily 1 Group F Member 3 medicine.disease Immunity Innate Gastrointestinal Tract Mice Inbred C57BL Disease Models Animal Endocrinology medicine.anatomical_structure chemistry business |
| Zdroj: | Medicine & Science in Sports & Exercise. 52:1710-1718 |
| ISSN: | 1530-0315 0195-9131 |
| Popis: | Purpose This study was to investigate the mechanism of intestinal physical and immune barriers in the occurrence of high-intensive exercise-induced gastrointestinal symptoms. Methods An overtraining model of male C57BL/6 mice was established by running-to-exhaustive exercise. Then, the mice were sacrificed, and a series of evaluation indicators, including the routine blood analysis as well as histological examinations, inflammatory factors, ultrastructure observation, and intestinal permeability of the gut, were measured based on this model. The expressions of inflammatory factors tumor necrosis factor α, interferon-γ, and interleukin (IL)-6 as well as the tight junction and adherence junction proteins ZO-1, Occludin, Claudin-1, and E-cadherin were measured, respectively. Furthermore, the mRNA level of IL-22 and the proportion of ILC3 and IL-22 produced in CD4 T cells in lamina propria lymphocytes (LPL) were analyzed by flow cytometry. Besides, the liver glycogen and the expressions of sirtuins-3 and hypoxia-inducible factor-1a, which were associated with the intestinal metabolism phenotype, were analyzed by Western blotting. Results Exhaustive exercise induced a disrupted intestinal barrier integrity, an aggravated intestinal inflammation, increased gut permeability, and the reduced IL-22 mRNA level. Compared with the nonexercise mice, the IL-22 produced in LPL was reduced followed by exhaustive exercise, whereas the proportion of IL-22 produced in CD4 T cells was still unchanged. Significantly, the proportion of ILC3 in the LPL was decreased obviously, including the NCR ILC3. Furthermore, the intestinal metabolism phenotype assessment showed lower liver glycogen and blood glucose as well as higher blood lactic acid and hypoxia-inducible factor-1a, respectively. Conclusions The data indicated that the acute high-intensity running-induced gastrointestinal symptom is closely associated with a reduced percentage of ILC3 and IL-22 level in the LPL, possibly due to the glycogen exhaustion and intestinal mucosa hypoperfusion. |
| Databáze: | OpenAIRE |
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