論文 - 詳細
| RRC ID | 75519 |
|---|---|
| 著者 | Fuchisawa Y, Abe H, Koyama K, Koseki S. |
| タイトル | Competitive growth kinetics of Campylobacter jejuni, Escherichia coli O157:H7 and Listeria monocytogenes with enteric microflora in a small-intestine model. |
| ジャーナル | J Appl Microbiol |
| Abstract |
AIMS:The biological events occurring during human digestion help to understand the mechanisms underlying the dose-response relationships of enteric bacterial pathogens. To better understand these events, we investigated the growth and reduction behaviour of bacterial pathogens in an in vitro model simulating the environment of the small intestine. METHODS AND RESULTS:The foodborne pathogens Campylobacter jejuni, Listeria monocytogenes and Escherichia coli O157:H7 were cultured with multiple competing enteric bacteria. Differences in the pathogen's growth kinetics due to the relative amount of competing enteric bacteria were investigated. These growth differences were described using a mathematical model based on Bayesian inference. When pathogenic and enteric bacteria were inoculated at 1 log CFU per ml and 9 log CFU per ml, respectively, L. monocytogenes was inactivated over time, while C. jejuni and E. coli O157:H7 survived without multiplying. However, as pathogen inocula were increased, its inhibition by enteric bacteria also decreased. CONCLUSIONS:Although the growth of pathogenic species was inhibited by enteric bacteria, the pathogens still survived. SIGNIFICANCE AND IMPACT OF THE STUDY:Competition experiments in a small-intestine model have enhanced understanding of the infection risk in the intestine and provide insights for evaluating dose-response relationships. |
| 巻・号 | 132(2) |
| ページ | 1467-1478 |
| 公開日 | 2022-2-1 |
| DOI | 10.1111/jam.15294 |
| PMID | 34498377 |
| PMC | PMC9291610 |
| MeSH | Bayes Theorem Campylobacter jejuni* Colony Count, Microbial Escherichia coli O157* Food Microbiology Gastrointestinal Microbiome* Humans Intestine, Small Kinetics Listeria monocytogenes* |
| リソース情報 | |
| 一般微生物 | JCM 1132 JCM 1059 JCM 1132 JCM 1059 |