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. 1986 Jun;58(2):179–184.

Depletion of suppressor T cells by 2'-deoxyguanosine abrogates tolerance in mice fed ovalbumin and permits the induction of intestinal delayed-type hypersensitivity.

A M Mowat
PMCID: PMC1452666  PMID: 2940171

Abstract

We have re-examined the role of suppressor T cells (Ts) in regulating immune responses to fed proteins by investigating the effect of 2'-deoxyguanosine (dGuo) on systemic and intestinal immunity in mice fed ovalbumin (OVA). Administration of dGuo for 10 days abrogated the suppression of systemic delayed-type hypersensitivity (DTH) and antibody responses normally found after feeding OVA, and also prevented the generation of OVA-specific Ts. In parallel, mice given dGuo and fed OVA developed sensitization to OVA in the gut-associated lymphoid tissues (GALT) after oral challenge with OVA and had increased intraepithelial lymphocyte (IEL) counts and crypt cell production rates (CCPR) in the jejunal mucosa, indicating the presence of a local DTH response. These findings confirm the importance of Ts in preventing hypersensitivity to dietary protein antigens and suggest that enteropathies associated with food hypersensitivity are due to a defect in Ts activity.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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