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

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

Journal Title: FEMS Microbiology Letters 1999, Vol.174(2), pp.225-229
Main Author: Brockmeier, Susan L
Format: Electronic Article Electronic Article
Language: English
Subjects:
Bvg
ID: ISSN: 0378-1097 ; E-ISSN: 1574-6968 ; DOI: 10.1016/S0378-1097(99)00143-3
Link: https://www.sciencedirect.com/science/article/pii/S0378109799001433
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recordid: elsevier_sdoi_10_1016_S0378_1097_99_00143_3
title: Early colonization of the rat upper respiratory tract by temperature modulated Bordetella bronchiseptica
format: Article
creator:
  • Brockmeier, Susan L
subjects:
  • Bordetella Bronchiseptica
  • Bacterial Colonization
  • Bvg
  • Temperature Modulation
  • Biology
ispartof: FEMS Microbiology Letters, 1999, Vol.174(2), pp.225-229
description: The ability of nonmodulated Bvg super(+) phase cultures, temperature modulated Bvg super(-) phase cultures, and a Bvg super(-) phase-locked mutant of Bordetella bronchiseptica to colonize the rat upper respiratory tract was investigated. Initially, greater numbers of the temperature modulated Bvg super(-) phase bacteria adhered to the nasal cavity of the rats. The temperature modulated Bvg super(-) phase bacteria appeared to be quickly cleared to levels lower than the Bvg super(+) phase bacteria by 4 h after inoculation and stayed lower until 48 h after inoculation when colonization levels were equal to the Bvg super(+) phase bacteria. The level of colonization with the Bvg super(-) phase-locked mutant of B. bronchiseptica was lower than both the nonmodulated Bvg super(+) phase and temperature modulated Bvg super(-) 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 super(+) phase occurs.
language: eng
source:
identifier: ISSN: 0378-1097 ; E-ISSN: 1574-6968 ; DOI: 10.1016/S0378-1097(99)00143-3
fulltext: fulltext
issn:
  • 0378-1097
  • 03781097
  • 1574-6968
  • 15746968
url: Link


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titleEarly colonization of the rat upper respiratory tract by temperature modulated Bordetella bronchiseptica
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subjectBordetella Bronchiseptica ; Bacterial Colonization ; Bvg ; Temperature Modulation ; Biology
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descriptionThe ability of nonmodulated Bvg super(+) phase cultures, temperature modulated Bvg super(-) phase cultures, and a Bvg super(-) phase-locked mutant of Bordetella bronchiseptica to colonize the rat upper respiratory tract was investigated. Initially, greater numbers of the temperature modulated Bvg super(-) phase bacteria adhered to the nasal cavity of the rats. The temperature modulated Bvg super(-) phase bacteria appeared to be quickly cleared to levels lower than the Bvg super(+) phase bacteria by 4 h after inoculation and stayed lower until 48 h after inoculation when colonization levels were equal to the Bvg super(+) phase bacteria. The level of colonization with the Bvg super(-) phase-locked mutant of B. bronchiseptica was lower than both the nonmodulated Bvg super(+) phase and temperature modulated Bvg super(-) 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 super(+) phase occurs.
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