Effects on secretory IgA levels in small intestine of mice that underwent moderate exercise training followed by a bout of strenuous swimming exercise
| Autor: | Eleazar Lara-Padilla, Rafael Campos-Rodríguez, María Viloria, Luvia Enid Sánchez-Torres, Marycarmen Godínez-Victoria, Aldo Arturo Reséndiz-Albor, Humberto Reyna-Garfias, Teresita Rocío Cruz-Hernández, Ma. Elisa Drago-Serrano |
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| Rok vydání: | 2012 |
| Předmět: |
Immunoglobulin A
Male medicine.medical_specialty Immunology Inflammation Biology Behavioral Neuroscience Mice Intestinal mucosa Internal medicine Intestine Small medicine Animals RNA Messenger Swimming Lamina propria Mice Inbred BALB C Endocrine and Autonomic Systems Receptors Polymeric Immunoglobulin Small intestine Endocrinology medicine.anatomical_structure Immunoglobulin A Secretory biology.protein Cytokines Intestinal Disorder medicine.symptom Polymeric immunoglobulin receptor Hormone |
| Zdroj: | Brain, behavior, and immunity. 26(8) |
| ISSN: | 1090-2139 |
| Popis: | Intestinal homeostasis effectors, secretory IgA (SIgA) and polymeric immunoglobulin receptor (pIgR), have been evaluated in proximal and distal small intestine with moderate-exercise training but not with strenuous exercise or a combination of these two protocols. Therefore, two groups of mice (n=6-8) were submitted to strenuous exercise, one with and one without previous training. The control group had no exercise protocol. Assessment was made of intestinal SIgA and plasma adrenal hormones (by immunoenzymatic assay), alpha-chain and pIgR proteins in intestinal mucosa (by Western blot), lamina propria IgA plasma-cells (by cytofluorometry), mRNA expression (by real-time PCR) for pIgR, alpha- and J-chains in liver and intestinal mucosa, and pro- and anti-inflammatory cytokines in mucosa samples. Compared to other exercise protocols, training plus strenuous exercise elicited: (1) higher levels of SIgA and pIgR in the proximal intestine (probably by hepatobiliary contribution); (2) higher levels of SIgA in the distal segment; (3) lower mRNA expression of some SIgA- and most pro-inflammatory pIgR-producing cytokines. SIgA and pIgR in both segments were derived from an existing pool of their corresponding producing cells. The apparent decreased translation of mRNA transcripts underlies lower levels of SIgA and pIgR in distal than proximal small intestine. There was no significant difference in the relatively high adrenal hormone levels found in both exercised groups. Further study is required about the effects of training plus strenuous exercise on pool-derived SIgA levels and mRNA expression of pro-inflammatory pIgR-producing cytokines. These results could have important implications for intestinal disorders involving inflammation and infection. |
| Databáze: | OpenAIRE |
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