| 1. |
- Kloster Smerud, Hilde, et al.
(författare)
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Gastrointestinal sensitivity to soy and milk proteins in patients with IgA nephropathy
- 2010
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Ingår i: Clinical Nephrology. - 0301-0430. ; 74:5, s. 364-371
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Tidskriftsartikel (refereegranskat)abstract
- Background Sensitivity to food antigens has been postulated as a contributing factor to the pathogenesis of IgA nephropathy (IgAN) Methods In this study we used a recently developed mucosal patch technique to evaluate rectal mucosal sensitivity to soy and cow's milk (CM) proteins in IgAN patients (n = 28) compared to healthy subjects (n = 18) The rectal mucosal production of nitric oxide (NO) and release of myeloperoxidase (M PO) and eosinophil cationic protein (ECP) were measured Serum samples were analyzed for IgA and IgG antibodies to a-lactalbumin, P-lactoglobulin, casein and soy Results 14 of 28 (14/28) patients experienced a rectal mucosal reaction, measured by increased NO and/or MPO levels, upon rectal challenge with soy and/or cow's milk proteins The levels of IgG antibodies to a-lactalbumin, beta-lactoglobulin and casein were significantly higher in CM sensitive as compared with non-sensitive IgAN patients, whereas the mean serum levels of IgA antibodies were similar No differences were seen in serum levels of IgA or IgG antibodies to soy Conclusion It is concluded that approximately half of our IgAN patients have a rectal mucosal sensitivity to soy or CM, and that an immune reactivity against antigens may be involved in the pathogenesis of IgAN in this subgroup of patients
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| 2. |
- Lidén, Maria, 1954-, et al.
(författare)
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Self-reported food intolerance and mucosal reactivity after rectal food protein challenge in patients with rheumatoid arthritis
- 2010
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Ingår i: Scandinavian Journal of Rheumatology. - : Informa Healthcare. - 0300-9742 .- 1502-7732. ; 39:4, s. 292-298
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Tidskriftsartikel (refereegranskat)abstract
- Objectives: A dietary link to rheumatoid arthritis (RA) has been suspected and an influence on arthritic symptoms by different diets has been reported. Our primary aim was to record the self-experienced adverse food reactions in patients with RA. A secondary aim was to relate self-experienced adverse reactions to dairy produce and wheat to the local mucosal reactivity observed after rectal challenge with cow's milk protein (CM) and wheat gluten. Methods: A questionnaire about self-experienced adverse reaction to food was sent to 347 RA patients. Rectal challenge with CM and gluten was performed in 27 of these patients and in healthy controls (n = 18). After a 15-h challenge the mucosal production of nitric oxide (NO) and the mucosal release of myeloperoxidase (MPO) and eosinophil cationic protein (ECP) were measured by using the mucosal patch technique. Results: Twenty-seven per cent of the RA patients reported food intolerance (FI) to various foods, and in particular to CM, meat, and wheat gluten. Strong mucosal reactivity to CM was observed in 11% of the patients. Moderately increased mucosal reactivity to CM and gluten was found in 22% and 33%, respectively, of the patients. No relationship was found between self-experienced adverse reactions to CM or gluten and mucosal reactivity to these proteins. Conclusions: Perceived FI is reported frequently by RA patients, with a prevalence similar to that reported previously in the general population. Mucosal reactivity to CM and gluten is seen in a minor fraction of RA patients and is not related to the frequently perceived intolerance to these proteins.
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| 3. |
- Xu, Shengyuan, et al.
(författare)
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Tissue localization and the establishment of a sensitive immunoassay of the newly discovered human phospholipase B-precursor (PLB-P)
- 2010
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Ingår i: JIM - Journal of Immunological Methods. - : Elsevier BV. - 0022-1759 .- 1872-7905. ; 353:1-2, s. 71-77
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Tidskriftsartikel (refereegranskat)abstract
- Human phospholipase B-precursor (PLB-P) is a newly identified and purified protein from human neutrophils. The precise function of PLB-P in vivo is not yet known. Its existence in neutrophils and the enzymatic activity against phospholipids imply a role in the defence against invading microorganisms and in the generation of lipid mediators of inflammation. We describe here the generation of specific antibodies against PLB-P, the tissue localizations of PLB-P and the establishment of an accurate, specific, and reproducible radioimmunoassay (RIA). A survey of normal and malignant tissues showed strong immunostaining of PLB-P in neuronal and myeloid cells and in adrenal glands. Elevated levels were found in sera of patients with influenza A infection i.e. > 1 mu g/L and in gut fluids of patients with inflammatory bowel disease i.e. > 20 mu g/L. The levels correlated to markets of neutrophil activation, suggesting a neutrophil origin of PLB-P in these conditions. The antibodies and the assay will be useful in the future basic and clinical investigations of PLB-P.
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