Faculty Collaboration Database

Interleukin-1 receptor antagonist as an adjunct in the treatment of Haemophilus influenzae otitis media in the chinchilla. Laryngoscope 2000 Sep;110(9):1457-61

Date

09/13/2000

Pubmed ID

10983942

DOI

10.1097/00005537-200009000-00009

Scopus ID

2-s2.0-0033818645 (requires institutional sign-in at Scopus site)   8 Citations

Abstract

OBJECTIVES: This purpose of this study was to investigate the effect of blockade of the inflammatory cytokine pathway on experimentally induced otitis media in the chinchilla model.

STUDY DESIGN: Pilot, randomized placebo-controlled trial.

METHODS: Ampicillin-sensitive Haemophilus influenzae otitis media was induced in 45 adult chinchillas. The animals were randomly assigned to the following treatment groups: 1) transbullar injections (TBI) of interleukin-1 receptor antagonist (IL-1ra) and intramuscular ampicillin, 2) TBI of saline and intramuscular ampicillin, 3) TBI of IL-1ra and intramuscular sa-1 line or 4) TBI of saline and intramuscular saline. Blinded investigators measured resolution of otitis media by otomicroscopy, tympanogram, and culture results.

RESULTS: Comparisons were made between the treatment groups to assess the ability of IL-1ra to assist with resolution of otitis media using exact two-group binomial tests with the StatXact statistical program. The group with TBI of IL-1ra and intramuscular ampicillin as a treatment demonstrated trends suggesting more rapid resolution of positive cultures and more rapid and complete return to normal results on tympanograms and otomicroscopic findings compared with the group treated with TBI of saline and intramuscular ampicillin. These trends did not achieve statistical significance with the relatively small sample sizes used in this pilot study.

CONCLUSIONS: This investigation provides further evidence that the inflammatory cytokine cascade plays a significant role in the pathophysiology of otitis media and that modulation of this inflammatory pathway may provide novel and efficacious treatments for otitis media Further studies with larger groups of animals are warranted to determine whether the trends identified in this pilot study are reproducible and achieve statistical significance.

Author List

Kerschner JE, Beste DJ, Lynch JB, Fox MC, Kehl KS

MESH terms used to index this publication - Major topics in bold

Ampicillin
Animals
Chinchilla
Disease Models, Animal
Drug Therapy, Combination
Haemophilus Infections
Haemophilus influenzae
Injections, Intramuscular
Interleukin 1 Receptor Antagonist Protein
Otitis Media
Penicillins
Pilot Projects
Random Allocation
Receptors, Interleukin-1
Sialoglycoproteins