Suppressed inflammation in obese children induced by a high-fiber diet is associated with the attenuation of gut microbial virulence factor genes
In our previous study, a gut microbiota-targeted dietary intervention with a high-fiber diet improved the immune status of both genetically obese (Prader-Willi Syndrome, PWS) and simple obese (SO) children. However, PWS children had higher inflammation levels than SO children throughout the trial, t...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2021-12-01
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| Series: | Virulence |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/21505594.2021.1948252 |
| _version_ | 1828125661158440960 |
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| author | Hui Li Guojun Wu Liping Zhao Menghui Zhang |
| author_facet | Hui Li Guojun Wu Liping Zhao Menghui Zhang |
| author_sort | Hui Li |
| collection | DOAJ |
| description | In our previous study, a gut microbiota-targeted dietary intervention with a high-fiber diet improved the immune status of both genetically obese (Prader-Willi Syndrome, PWS) and simple obese (SO) children. However, PWS children had higher inflammation levels than SO children throughout the trial, the gut microbiota of the two cohorts was similar. As some virulence factors (VFs) produced by the gut microbiota play a role in triggering host inflammation, this study compared the characteristics and changes of gut microbial VF genes of the two cohorts before and after the intervention using a fecal metagenomic dataset. We found that in both cohorts, the high-fiber diet reduced the abundance of VF, and particularly pathogen-specific, genes. The composition of VF genes was also modulated, especially for offensive and defensive VF genes. Furthermore, genes belonging to invasion, T3SS (type III secretion system), and adherence classes were suppressed. Co-occurrence network analysis detected VF gene clusters closely related to host inflammation in each cohort. Though these cohort-specific clusters varied in VF gene combinations and cascade reactions affecting inflammation, they mainly contained VFs belonging to iron uptake, T3SS, and invasion classes. The PWS group had a lower abundance of VF genes before the trial, which suggested that other factors could also be responsible for the increased inflammation in this cohort. This study provides insight into the modulation of VF gene structure in the gut microbiota by a high-fiber diet, with respect to reduced inflammation in obese children, and differences in VF genes between these two cohorts. |
| first_indexed | 2024-04-11T15:23:49Z |
| format | Article |
| id | doaj.art-a680b77322074261ab98833c6b4d8ec0 |
| institution | Directory Open Access Journal |
| issn | 2150-5594 2150-5608 |
| language | English |
| last_indexed | 2024-04-11T15:23:49Z |
| publishDate | 2021-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Virulence |
| spelling | doaj.art-a680b77322074261ab98833c6b4d8ec02022-12-22T04:16:18ZengTaylor & Francis GroupVirulence2150-55942150-56082021-12-011211754177010.1080/21505594.2021.19482521948252Suppressed inflammation in obese children induced by a high-fiber diet is associated with the attenuation of gut microbial virulence factor genesHui Li0Guojun Wu1Liping Zhao2Menghui Zhang3Shanghai Jiao Tong UniversityShanghai Jiao Tong UniversityShanghai Jiao Tong UniversityShanghai Jiao Tong UniversityIn our previous study, a gut microbiota-targeted dietary intervention with a high-fiber diet improved the immune status of both genetically obese (Prader-Willi Syndrome, PWS) and simple obese (SO) children. However, PWS children had higher inflammation levels than SO children throughout the trial, the gut microbiota of the two cohorts was similar. As some virulence factors (VFs) produced by the gut microbiota play a role in triggering host inflammation, this study compared the characteristics and changes of gut microbial VF genes of the two cohorts before and after the intervention using a fecal metagenomic dataset. We found that in both cohorts, the high-fiber diet reduced the abundance of VF, and particularly pathogen-specific, genes. The composition of VF genes was also modulated, especially for offensive and defensive VF genes. Furthermore, genes belonging to invasion, T3SS (type III secretion system), and adherence classes were suppressed. Co-occurrence network analysis detected VF gene clusters closely related to host inflammation in each cohort. Though these cohort-specific clusters varied in VF gene combinations and cascade reactions affecting inflammation, they mainly contained VFs belonging to iron uptake, T3SS, and invasion classes. The PWS group had a lower abundance of VF genes before the trial, which suggested that other factors could also be responsible for the increased inflammation in this cohort. This study provides insight into the modulation of VF gene structure in the gut microbiota by a high-fiber diet, with respect to reduced inflammation in obese children, and differences in VF genes between these two cohorts.http://dx.doi.org/10.1080/21505594.2021.1948252virulence factorobesityinflammationhigh-fiber dietprader-willi syndromegut microbiotametagenomic |
| spellingShingle | Hui Li Guojun Wu Liping Zhao Menghui Zhang Suppressed inflammation in obese children induced by a high-fiber diet is associated with the attenuation of gut microbial virulence factor genes Virulence virulence factor obesity inflammation high-fiber diet prader-willi syndrome gut microbiota metagenomic |
| title | Suppressed inflammation in obese children induced by a high-fiber diet is associated with the attenuation of gut microbial virulence factor genes |
| title_full | Suppressed inflammation in obese children induced by a high-fiber diet is associated with the attenuation of gut microbial virulence factor genes |
| title_fullStr | Suppressed inflammation in obese children induced by a high-fiber diet is associated with the attenuation of gut microbial virulence factor genes |
| title_full_unstemmed | Suppressed inflammation in obese children induced by a high-fiber diet is associated with the attenuation of gut microbial virulence factor genes |
| title_short | Suppressed inflammation in obese children induced by a high-fiber diet is associated with the attenuation of gut microbial virulence factor genes |
| title_sort | suppressed inflammation in obese children induced by a high fiber diet is associated with the attenuation of gut microbial virulence factor genes |
| topic | virulence factor obesity inflammation high-fiber diet prader-willi syndrome gut microbiota metagenomic |
| url | http://dx.doi.org/10.1080/21505594.2021.1948252 |
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