Journal
ANAEROBE
Volume 15, Issue 1-2, Pages 7-17Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.anaerobe.2008.08.001
Keywords
L. monocytogenes; Anaerobic; Pathogenesis; Growth; Survival
Categories
Funding
- USDA-Food Safety Consortium
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Listeria monocytogenes is a Gram positive facultative anaerobe that causes listeriosis, a disease that mainly affects the immune-compromised, the elderly, infants and pregnant women. In the susceptible immune challenged population, listeriosis is very severe and has a fatality rate of up to 30%. Control of L. monocytogenes is difficult due to its: 1) widespread presence in the environment, 2) intrinsic physiological resistance, 3) ability to adapt to external stresses and 4) ability to grow at a wide range of temperatures. L. monocytogenes encounters anaerobic conditions in the external environment as well as during pathogenesis. Although L. monocytogenes is a facultative anaerobe, the differential effects of O-2 and oxidation-reduction potential on the multiplication of L. monocytogenes have not been established. In addition, most laboratory studies to determine the growth, survival and persistence of this pathogen in foods as well as in the environment have emphasized the response of this pathogen under aerobic conditions. Consequently, this has led to a limited understanding of the metabolic and physiological responses of L. monocytogenes in low oxygen environments. Therefore, the objective of our review was to highlight the progress that has been made in L. monocytogenes research with emphasis on the role of low oxygen and/or anaerobiosis in the growth, survival and proliferation of this pathogen in the environment as well as during pathogenesis. (C) 2008 Elsevier Ltd. All rights reserved.
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