| Morphological and immune response alterations in the intestinal mucosa of the mouse after short periods on a low-magnesium diet. | |
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MedLine Citation:
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PMID: 12425732 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The importance of Mg for the immune function is well recognized; however, there is no information available about the effect of Mg intake on the modulation of local immune response in the intestine. Thus, in the present study the hypothesis that short periods of Mg deprivation can affect intestinal mucosa and local immune response was tested. For this purpose, OF1 female mice were fed a semipurified diet (1000 mg Mg/kg diet). For 3 d before immunization and 1 d after, half of the animals were fed a Mg-deficient diet (30 mg Mg/kg diet), three immunizations per os were performed every 3 weeks with Escherichia coli producing the CS31A capsule-like protein (1010 or bacteria per animal). Mice were killed 10 d after the last immunization. The level of specific anti CS31A immunoglobulin (Ig) G and IgA in the serum and secretory IgA in the intestinal secretions and faeces were measured by ELISA. The results indicated that administration of a high dose of immunogen with a low-Mg diet led to lower specific IgA levels in the intestinal mucus and serum. Administration of a low dose of immunogen with a low-Mg diet led to lower IgA and IgG levels in the serum and secretory IgA coproantibodies. To assess alterations of intestinal mucosa caused by a low-Mg diet for a short period, histological and scanning electron microscopy analyses were performed on samples from mice (not submitted to the vaccination protocol) after 3 d on the Mg-deficient diet. These analyses showed several alterations, suggesting perturbations in the growth of the intestinal mucosa. These changes were accompanied by modifications in the expression of several genes involved in cell growth and stress response. From this present work, it may be concluded that short periods of Mg deprivation can affect the intestinal mucosa and local immune response of the intestine. |
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Authors:
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W Zimowska; J P Girardeau; J Kuryszko; D Bayle; Y Rayssiguier; A Mazur |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The British journal of nutrition Volume: 88 ISSN: 0007-1145 ISO Abbreviation: Br. J. Nutr. Publication Date: 2002 Nov |
Date Detail:
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Created Date: 2002-11-11 Completed Date: 2002-12-13 Revised Date: 2003-11-14 |
Medline Journal Info:
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Nlm Unique ID: 0372547 Medline TA: Br J Nutr Country: England |
Other Details:
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Languages: eng Pagination: 515-22 Citation Subset: IM |
Affiliation:
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CRNH, Unité Maladies Métaboliques et Micronutriments, Unité Microbiologie, INRA, Theix, France. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Enzyme-Linked Immunosorbent Assay / methods Escherichia coli* Escherichia coli Infections / immunology* Feces / chemistry Female Immunity, Mucosal Immunoglobulin A / analysis Immunoglobulin A, Secretory / analysis Immunoglobulin G / analysis Intestinal Mucosa / immunology*, ultrastructure* Magnesium Deficiency / immunology, pathology* Mice Mice, Inbred Strains Microscopy, Electron, Scanning Models, Animal Time Factors |
| Chemical | |
Reg. No./Substance:
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0/Immunoglobulin A; 0/Immunoglobulin A, Secretory; 0/Immunoglobulin G |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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