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Early colonization of the rat upper respiratory tract by temperature modulated Bordetella bronchiseptica

The ability of nonmodulated Bvg + phase cultures, temperature modulated Bvg − phase cultures, and a Bvg − phase-locked mutant of Bordetella bronchiseptica to colonize the rat upper respiratory tract was investigated. Initially, greater numbers of the temperature modulated Bvg − phase bacteria adhere... Full description

Journal Title: FEMS microbiology letters 1999, Vol.174 (2), p.225-229
Main Author: Brockmeier, Susan L
Format: Electronic Article Electronic Article
Language: English
Subjects:
Bvg
Quelle: Alma/SFX Local Collection
Publisher: Oxford: Elsevier B.V
ID: ISSN: 0378-1097
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title: Early colonization of the rat upper respiratory tract by temperature modulated Bordetella bronchiseptica
format: Article
creator:
  • Brockmeier, Susan L
subjects:
  • Animals
  • Bacterial Adhesion
  • Bacterial colonization
  • Bacterial diseases
  • Bacterial Proteins - genetics
  • Bacteriology
  • Biological and medical sciences
  • Bordetella bronchiseptica
  • Bordetella bronchiseptica - growth & development
  • Bordetella bronchiseptica - pathogenicity
  • Bvg
  • Cell Line
  • Experimental bacterial diseases and models
  • Fundamental and applied biological sciences. Psychology
  • Infectious diseases
  • Macrophages - microbiology
  • Medical sciences
  • Mice
  • Microbiology
  • Nasal Cavity - microbiology
  • Pathogenicity, virulence, toxins, bacteriocins, pyrogens, host-bacteria relations, miscellaneous strains
  • Rats
  • Rats, Sprague-Dawley
  • Temperature
  • Temperature modulation
  • Virulence
ispartof: FEMS microbiology letters, 1999, Vol.174 (2), p.225-229
description: The ability of nonmodulated Bvg + phase cultures, temperature modulated Bvg − phase cultures, and a Bvg − phase-locked mutant of Bordetella bronchiseptica to colonize the rat upper respiratory tract was investigated. Initially, greater numbers of the temperature modulated Bvg − phase bacteria adhered to the nasal cavity of the rats. The temperature modulated Bvg − phase bacteria appeared to be quickly cleared to levels lower than the Bvg + phase bacteria by 4 h after inoculation and stayed lower until 48 h after inoculation when colonization levels were equal to the Bvg + phase bacteria. The level of colonization with the Bvg − phase-locked mutant of B. bronchiseptica was lower than both the nonmodulated Bvg + phase and temperature modulated Bvg − phase cultures and declined over time during the experiment. These findings suggest that there may be increased adherence from an environmental phase to ensure bacteria survive initial clearance mechanisms until the switch to the Bvg + phase occurs.
language: eng
source: Alma/SFX Local Collection
identifier: ISSN: 0378-1097
fulltext: fulltext
issn:
  • 0378-1097
  • 1574-6968
url: Link


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titleEarly colonization of the rat upper respiratory tract by temperature modulated Bordetella bronchiseptica
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descriptionThe ability of nonmodulated Bvg + phase cultures, temperature modulated Bvg − phase cultures, and a Bvg − phase-locked mutant of Bordetella bronchiseptica to colonize the rat upper respiratory tract was investigated. Initially, greater numbers of the temperature modulated Bvg − phase bacteria adhered to the nasal cavity of the rats. The temperature modulated Bvg − phase bacteria appeared to be quickly cleared to levels lower than the Bvg + phase bacteria by 4 h after inoculation and stayed lower until 48 h after inoculation when colonization levels were equal to the Bvg + phase bacteria. The level of colonization with the Bvg − phase-locked mutant of B. bronchiseptica was lower than both the nonmodulated Bvg + phase and temperature modulated Bvg − phase cultures and declined over time during the experiment. These findings suggest that there may be increased adherence from an environmental phase to ensure bacteria survive initial clearance mechanisms until the switch to the Bvg + phase occurs.
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subjectAnimals ; Bacterial Adhesion ; Bacterial colonization ; Bacterial diseases ; Bacterial Proteins - genetics ; Bacteriology ; Biological and medical sciences ; Bordetella bronchiseptica ; Bordetella bronchiseptica - growth & development ; Bordetella bronchiseptica - pathogenicity ; Bvg ; Cell Line ; Experimental bacterial diseases and models ; Fundamental and applied biological sciences. Psychology ; Infectious diseases ; Macrophages - microbiology ; Medical sciences ; Mice ; Microbiology ; Nasal Cavity - microbiology ; Pathogenicity, virulence, toxins, bacteriocins, pyrogens, host-bacteria relations, miscellaneous strains ; Rats ; Rats, Sprague-Dawley ; Temperature ; Temperature modulation ; Virulence
ispartofFEMS microbiology letters, 1999, Vol.174 (2), p.225-229
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1Bacterial Adhesion
2Bacterial colonization
3Bacterial diseases
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abstractThe ability of nonmodulated Bvg + phase cultures, temperature modulated Bvg − phase cultures, and a Bvg − phase-locked mutant of Bordetella bronchiseptica to colonize the rat upper respiratory tract was investigated. Initially, greater numbers of the temperature modulated Bvg − phase bacteria adhered to the nasal cavity of the rats. The temperature modulated Bvg − phase bacteria appeared to be quickly cleared to levels lower than the Bvg + phase bacteria by 4 h after inoculation and stayed lower until 48 h after inoculation when colonization levels were equal to the Bvg + phase bacteria. The level of colonization with the Bvg − phase-locked mutant of B. bronchiseptica was lower than both the nonmodulated Bvg + phase and temperature modulated Bvg − phase cultures and declined over time during the experiment. These findings suggest that there may be increased adherence from an environmental phase to ensure bacteria survive initial clearance mechanisms until the switch to the Bvg + phase occurs.
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