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Induction of IgE antibodies and T-cell reactivity to ovalbumin in rats colonized with Escherichia coli genetically manipulated to produce ovalbumin.

Dahlman-Höglund, Anna, 1964 (author)
Gothenburg University,Göteborgs universitet,Institutionen för laboratoriemedicin, Avdelningen för klinisk immunologi,Institute of Laboratory Medicine, Dept of Clinical Immunology
Ahlstedt, Staffan (author)
Gothenburg University,Göteborgs universitet,Institutionen för laboratoriemedicin, Avdelningen för klinisk immunologi,Institute of Laboratory Medicine, Dept of Clinical Immunology
Hanson, Lars Åke, 1934 (author)
Gothenburg University,Göteborgs universitet,Institutionen för laboratoriemedicin, Avdelningen för klinisk immunologi,Institute of Laboratory Medicine, Dept of Clinical Immunology
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Telemo, Esbjörn, 1953 (author)
Gothenburg University,Göteborgs universitet,Institutionen för laboratoriemedicin, Avdelningen för klinisk immunologi,Institute of Laboratory Medicine, Dept of Clinical Immunology
Wold, Agnes E, 1955 (author)
Gothenburg University,Göteborgs universitet,Institutionen för laboratoriemedicin, Avdelningen för klinisk immunologi,Institute of Laboratory Medicine, Dept of Clinical Immunology
Dahlgren, Ulf, 1953 (author)
Gothenburg University,Göteborgs universitet,Institutionen för laboratoriemedicin, Avdelningen för klinisk immunologi,Institute of Laboratory Medicine, Dept of Clinical Immunology
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 (creator_code:org_t)
1992
1992
English.
In: Immunology. - 0019-2805. ; 76:2, s. 225-8
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • The immune response to ovalbumin (OA) and the bacterial antigens, lipopolysaccharide (LPS) and fimbriae were studied in conventional rats colonized from birth with an Escherichia coli strain producing OA. The colonized rats had developed IgE antibodies against OA, but not against the fimbrial or the LPS antigens from the E. coli at 2 months of age. At this time all rats were primed with OA given intracutaneously in Freund's complete adjuvant. Two weeks later the colonized rats showed a 35% greater delayed-type hypersensitivity (DTH) reaction to OA, measured as ear swelling, than the controls. Thus bacteria carrying antigens resembling potential allergens might aggravate, or participate in the induction of allergic symptoms. In addition such bacteria could be efficient vaccine vectors in protection against parasites. The study illustrates the importance of the mode of antigen presentation for the subsequent immune response.

Subject headings

NATURVETENSKAP  -- Biologi -- Mikrobiologi (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences -- Microbiology (hsv//eng)
NATURVETENSKAP  -- Biologi -- Immunologi (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences -- Immunology (hsv//eng)

Keyword

Animals
Antigens
Bacterial
immunology
Escherichia coli
immunology
metabolism
Escherichia coli Infections
immunology
Female
Hypersensitivity
Delayed
immunology
Immunoglobulin E
biosynthesis
Immunoglobulin G
biosynthesis
Ovalbumin
biosynthesis
immunology
Rats
Rats
Inbred Strains

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ref (subject category)
art (subject category)

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