Influence of lactic acid bacteria on longevity of Caenorhabditis elegans and host defense against salmonella enterica serovar enteritidis.

Influence of lactic acid bacteria on longevity of Caenorhabditis elegans and host defense against salmonella enterica serovar enteritidis. Research Abstract Details 

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Influence of lactic acid bacteria on longevity of Caenorhabditis elegans and host defense against salmonella enterica serovar enteritidis. Abstract Text:

Takanori Ikeda,Chikako Yasui,Kaori Hoshino,Kentaro Arikawa,Yoshikazu Nishikawa,Takanori Ikeda,Chikako Yasui,Kaori Hoshino,Kentaro Arikawa,Yoshikazu Nishikawa,Takanori Ikeda,Chikako Yasui,Kaori Hoshino,Kentaro Arikawa,Yoshikazu Nishikawa,

This study aimed to develop a convenient model to investigate the senescence of host defenses and the influence of food and nutrition. A small soil nematode, Caenorhabditis elegans, was grown for 3 days from hatching on a lawn of Escherichia coli OP50 as the normal food source, and subsequently some of the nematodes were fed lactic acid bacteria (LAB). The life spans of worms fed LAB were significantly longer than the life spans of those fed OP50. To investigate the effect of age on host defenses, 3- to 7-day-old worms fed OP50 were transferred onto a lawn of Salmonella enterica serovar Enteritidis for infection. The nematodes died over the course of several days, and the accumulation of salmonella in the intestinal lumen suggested that the worms were infected. The 7-day-old worms showed a higher death rate during the 5 days after infection than nematodes infected at the age of 3 days; no clear difference was observed when the worms were exposed to OP50. We then investigated whether the LAB could exert probiotic effects on the worms' host defenses and improve life span. Seven-day-old nematodes fed LAB from the age of 3 days were more resistant to salmonella than worms fed OP50 until they were infected with salmonella. This study clearly showed that LAB can enhance the host defense of C. elegans and prolong life span. The nematode appears to be an appropriate model for screening useful probiotic strains or dietetic antiaging substances.

Influence of lactic acid bacteria on longevity of Caenorhabditis elegans and host defense against salmonella enterica serovar enteritidis. Publishing Authors By Initials

T Ikeda,C Yasui,K Hoshino,K Arikawa,Y Nishikawa,T Ikeda,C Yasui,K Hoshino,K Arikawa,Y Nishikawa,T Ikeda,C Yasui,K Hoshino,K Arikawa,Y Nishikawa,

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Influence of lactic acid bacteria on longevity of Caenorhabditis elegans and host defense against salmonella enterica serovar enteritidis. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: Applied and environmental microbiology

VOLUME: 73

Page Numbers: 6404-9

Journal Abbreviation: Appl. Environ. Microbiol.

ISSN: 0099-2240

DAY: 17

MONTH: 08

YEAR: 2007

Influence of lactic acid bacteria on longevity of Caenorhabditis elegans and host defense against salmonella enterica serovar enteritidis. Information

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LANGUAGE: eng

NlmUniqueID: 7605801

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AFFILIATION: Graduate School of Human Life Science, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan.

Country: United States

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MEDLINETA: Appl Environ Microbiol

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