Neonatal exposure to staphylococcal superantigen improves induction of oral tolerance in a mouse model of airway allergy.

Lönnqvist, Anna,1980Gothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för infektionssjukdomar,Institute of Biomedicine, Department of Infectious Medicine (author)

The hygiene hypothesis suggests that lack of microbial stimulation in early infancy may lead to allergy, but it has been difficult to identify particular protective microbial exposures. We have observed that infants colonised in the first week(s) of life with Staphylococcus aureus have lower risk of developing food allergy. As many S. aureus strains produce superantigens with T-cell stimulating properties, we here investigate whether neonatal mucosal exposure to superantigen could influence the capacity to develop oral tolerance and reduce sensitisation and allergy. BALB/c mice were exposed to staphylococcal enterotoxin A (SEA) as neonates and fed with OVA as adults, prior to sensitisation and i.n. OVA challenge. Our results show that SEA pre-treated mice are more efficiently tolerised by OVA feeding, as shown by lower lung-cell infiltration and antigen-specific IgE response in the SEA pre-treated mice, compared with sham-treated mice. This was not due to deletion or anergy of lymphocytes by SEA treatment, because the SEA pre-treated mice that were fed with PBS showed similar inflammatory response as the sham-treated PBS-fed mice. Our results suggest that strong T-cell activation in infancy conditions the mucosal immune system and promotes development of oral tolerance.

MEDICIN OCH HÄLSOVETENSKAP Medicinska och farmaceutiska grundvetenskaper Mikrobiologi inom det medicinska området hsv//swe
MEDICAL AND HEALTH SCIENCES Basic Medicine Microbiology in the medical area hsv//eng
MEDICIN OCH HÄLSOVETENSKAP Medicinska och farmaceutiska grundvetenskaper Immunologi inom det medicinska området hsv//swe
MEDICAL AND HEALTH SCIENCES Basic Medicine Immunology in the medical area hsv//eng
Animals
Animals
Newborn
immunology
Disease Models
Animal
Enterotoxins
immunology
metabolism
Immune Tolerance
immunology
Immunity
Mucosal
Lung
immunology
metabolism
Mice
Mice
Inbred BALB C
Mouth Mucosa
immunology
microbiology
Ovalbumin
immunology
Respiratory Hypersensitivity
immunology
microbiology
Staphylococcus
immunology
Superantigens
immunology
metabolism
T-Lymphocytes
Regulatory
immunology
metabolism

Östman, Sofia M,1974Gothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för infektionssjukdomar,Institute of Biomedicine, Department of Infectious Medicine(Swepub:gu)xostms (author)
Almqvist, Nina,1974Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för reumatologi och inflammationsforskning,Institute of Medicine, Department of Rheumatology and Inflammation Research(Swepub:gu)xalmni (author)
Hultkrantz, Susanne,1977Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för reumatologi och inflammationsforskning,Institute of Medicine, Department of Rheumatology and Inflammation Research (author)
Telemo, Esbjörn,1953Gothenburg University,Göteborgs universitet,Institutionen för medicin, avdelningen för reumatologi och inflammationsforskning,Institute of Medicine, Department of Rheumatology and Inflammation Research(Swepub:gu)xteles (author)
Wold, Agnes E,1955Gothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för infektionssjukdomar,Institute of Biomedicine, Department of Infectious Medicine(Swepub:gu)xwolag (author)
Rask, Carola,1970Gothenburg University,Göteborgs universitet,Institutionen för biomedicin, avdelningen för infektionssjukdomar,Institute of Biomedicine, Department of Infectious Medicine(Swepub:gu)xrasca (author)
Göteborgs universitetInstitutionen för biomedicin, avdelningen för infektionssjukdomar (creator_code:org_t)

By the author/editor: Lönnqvist, Anna, ...; Östman, Sofia M, ...; Almqvist, Nina, ...; Hultkrantz, Susa ...; Telemo, Esbjörn, ...; Wold, Agnes E, 1 ...; show more...; Rask, Carola, 19 ...; show less...

About the subject

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Basic Medicine; and Microbiology in ...

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Basic Medicine; and Immunology in th ...

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