Modulation of adjuvant-enhanced delayed-type hypersensitivity by the interferon inducers poly I:C and Newcastle disease virus.
The modulation by the interferon (IFN) inducers poly I:C and Newcastle disease virus (NDV) of the effector phase of adjuvant-enhanced delayed-type hypersensitivity (DH) was studied in mice. A strongly enhanced DH was induced in mice to ultraviolet (UV) light inactivated Semliki forest virus (SFV) by the use of the adjuvant dimethyldioctadecylammonium bromide. At day 6 after intracutaneous immunization, DH was elicited with SFV and measured 24 and 48 h later as increase in footpad thickness (footpad swelling test). Systemic, intravenous administration of either poly I:C, UV-inactivated NDV, or NDV-induced IFN prior to elicitation of DH with antigen resulted in a temporarily suppressed DH reaction. Both the poor swelling at 3 h and strong swelling at 24 h were suppressed, while the swelling at 48 h was enhanced. The model described provides a sensitive in vivo method to study modulating effects of drugs and microbial agents on the effector phase of DH.
Kraaijeveld
C A
CA
Kamphuis
W
W
Benaissa-Trouw
B J
BJ
Harmsen
M
M
Snippe
H
H
D000818:Animals; D003634:DDT / Q000031:analogs & derivatives / Q000276:immunology; D006968:Hypersensitivity, Delayed / Q000276:immunology*; D007108:Immune Tolerance; D007111:Immunity, Cellular / Q000187:drug effects; D007372:Interferons / Q000276:immunology*; D051379:Mice; D009522:Newcastle disease virus / Q000276:immunology*; D011070:Poly I-C / Q000494:pharmacology*; D012672:Semliki forest virus / Q000276:immunology
C000849:bis(p-chlorophenyl)acetic acid; D007372:Interferons; D003634:DDT; D011070:Poly I-C