Document Detail


Age-related susceptibility to Pseudomonas aeruginosa ocular infections in mice.
MedLine Citation:
PMID:  669795     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The susceptibility of newborn and infant mice to eye infection by Pseudomonas aeruginosa was studied in 5-, 10-, 15- to 16-, and 21-day-old mice. In the first of three age-related susceptibility experiments, inoculation of P. aeruginosa under the unopened eyelids of infant (5- and 10-day-old) mice in the absence of prior corneal wounding resulted in acute infection and rapid death of many of the animals. However, endophthalmitis was observed in about 30% of bacteremic animals that survived to age 14 to 15 days. In the second experiment, 15- to 16-day-old mice whose eyes were open received P. aeruginosa topically onto either wounded or unwounded corneas. At least 50% of the mice that received both corneal wounding and the bacteria exhibited keratitis, endophthalmitis, and subsequent phthisis bulbi. None of the infected mice died of bacteremia. In addition, mice infected in the absence of corneal wounding did not exhibit any eye damage. In the third experiment, the wounded-cornea responses of 21-day-old mice to P. aeruginosa were more variable. Thirty seven percent of the mice exhibited an intermediate response of decreased eye size and cataracts which was not observed in 15- to 16-day-old mice, 32% recovered spontaneously, and 29% exhibited complete shrinkage of the infected eyes. The variability of the latter responses may reflect a transitional maturation period of natural immunity to the organism in some of the animals, since all 4- to 6-week-old adult mice respond routinely to ocular wounding and similar infections with the organism by undergoing a spontaneous resolvable keratitis (3 to 4 weeks).
Authors:
L D Hazlett; D D Rosen; R S Berk
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Infection and immunity     Volume:  20     ISSN:  0019-9567     ISO Abbreviation:  Infect. Immun.     Publication Date:  1978 Apr 
Date Detail:
Created Date:  1978-09-29     Completed Date:  1978-09-29     Revised Date:  2010-09-02    
Medline Journal Info:
Nlm Unique ID:  0246127     Medline TA:  Infect Immun     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  25-9     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Aging*
Animals
Animals, Newborn / immunology*
Cornea / injuries
Eye Diseases / immunology
Female
Immunity, Innate*
Keratitis / immunology*
Male
Mice
Pseudomonas Infections / immunology*
Comments/Corrections

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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