PMID- 19210370 OWN - NLM STAT- MEDLINE DCOM- 20090623 LR - 20161125 IS - 1398-9995 (Electronic) IS - 0105-4538 (Linking) VI - 64 IP - 6 DP - 2009 Jun TI - Aluminium per se and in the anti-acid drug sucralfate promotes sensitization via the oral route. PG - 890-7 LID - 10.1111/j.1398-9995.2008.01933.x [doi] AB - BACKGROUND: Aluminium (ALUM) is used as experimental and clinical adjuvant for parenteral vaccine formulation. It is also contained in anti-acid drugs like sucralfate (SUC). These anti-acids have been shown to cause sensitization to food proteins via elevation of the gastric pH. The aim of this study was to assess the oral adjuvant properties of ALUM, alone or contained in SUC, in a BALB/c mouse model. METHODS: Mice were fed SUC plus ovalbumin (OVA) and compared with groups where ALUM or proton pump inhibitors (PPI) were applied as adjuvants. The humoral and cellular immune responses were assessed on antigen-specific antibody and cytokine levels. The in vivo relevance was investigated in skin tests. RESULTS: The highest OVA-specific immunoglobulin G1 (IgG1) and IgE antibody levels were found in mice fed with OVA/SUC, followed by OVA/ALUM-treated animals, indicating a T helper 2 (Th2) shift in both groups. Antibody levels in other groups revealed lower (OVA/PPI-group) or baseline levels (control groups). Positive skin tests confirmed an allergic response in anti-acid or adjuvant-treated animals. CONCLUSIONS: Our data show for the first time that ALUM acts as a Th2-adjuvant via the oral route. This suggests that orally applied SUC leads to an enhanced risk for food allergy, not only by inhibiting peptic digestion but also by acting as a Th2-adjuvant by its ALUM content. FAU - Brunner, R AU - Brunner R AD - Department of Pathophysiology, Medical University of Vienna, Vienna, Austria. FAU - Wallmann, J AU - Wallmann J FAU - Szalai, K AU - Szalai K FAU - Karagiannis, P AU - Karagiannis P FAU - Altmeppen, H AU - Altmeppen H FAU - Riemer, A B AU - Riemer AB FAU - Jensen-Jarolim, E AU - Jensen-Jarolim E FAU - Pali-Scholl, I AU - Pali-Scholl I LA - eng PT - Journal Article DEP - 20090205 PL - Denmark TA - Allergy JT - Allergy JID - 7804028 RN - 0 (Adjuvants, Immunologic) RN - 0 (Alum Compounds) RN - 0 (Antacids) RN - 0 (Immunoglobulin G) RN - 0 (Interleukin-5) RN - 34S289N54E (aluminum sulfate) RN - 37341-29-0 (Immunoglobulin E) RN - 54182-58-0 (Sucralfate) RN - 82115-62-6 (Interferon-gamma) RN - 9006-59-1 (Ovalbumin) SB - IM MH - Adjuvants, Immunologic/*adverse effects MH - Administration, Oral MH - Alum Compounds/*adverse effects MH - Animals MH - Antacids/*adverse effects MH - Female MH - Food Hypersensitivity/*etiology MH - Gastric Acidity Determination MH - Immunoglobulin E/blood MH - Immunoglobulin G/blood MH - Interferon-gamma/biosynthesis MH - Interleukin-5/biosynthesis MH - Mice MH - Mice, Inbred BALB C MH - Ovalbumin/immunology MH - Skin Tests MH - Sucralfate/*adverse effects MH - Th2 Cells/immunology EDAT- 2009/02/13 09:00 MHDA- 2009/06/24 09:00 CRDT- 2009/02/13 09:00 PHST- 2009/02/13 09:00 [entrez] PHST- 2009/02/13 09:00 [pubmed] PHST- 2009/06/24 09:00 [medline] AID - ALL1933 [pii] AID - 10.1111/j.1398-9995.2008.01933.x [doi] PST - ppublish SO - Allergy. 2009 Jun;64(6):890-7. doi: 10.1111/j.1398-9995.2008.01933.x. Epub 2009 Feb 5.