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Jung K, Wang Q, Chang KO, Saif LJ. Intestinal colonization with Escherichia fergusonii enhances infectivity of GII.12 human norovirus in gnotobiotic pigs. Virus Res 2023; 336:199219. [PMID: 37683935 PMCID: PMC10504090 DOI: 10.1016/j.virusres.2023.199219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/25/2023] [Accepted: 09/05/2023] [Indexed: 09/10/2023]
Abstract
The role of gut microbiota [especially, histo-blood group antigen (HBGA)-expressing bacteria] in influencing human norovirus (HuNoV) infections is unclear. We investigated if infectivity of GII.12 HuNoV in gnotobiotic (Gn) pigs is altered by intestinal colonization with Escherichia fergusonii known to express HBGA A and H on their cell surface. Fifteen piglets were randomly grouped: (1) E. fergusonii + HuNoV (n = 6), (2) HuNoV alone (n = 6), and (3) Mock-inoculated (n = 3). Pigs (8-11-day-old) were inoculated orally with GII.12 HuNoV strain HS206 (9.5 log10 genomic equivalents/pig) or mock. For 2 days prior to viral inoculation, pigs were inoculated orally with E. fergusonii [8 log10 colony forming units/pig/day]. Daily fecal consistency, fecal viral RNA or E. fergusonii shedding, and histopathology (at euthanasia) were evaluated. Unlike the reduced infectivity of GII.4 HuNoV observed previously in Gn pigs colonized with Enterobacter cloacae known to express HBGA A, B, and H on the surface, E. fergusonii + HuNoV pigs exhibited significantly higher cumulative fecal HuNoV RNA shedding at PIDs 6-14 and 1-21 compared with HuNoV alone pigs. Mean days of fecal HuNoV RNA shedding were also significantly greater in E. fergusonii + HuNoV pigs (11.8 ± 1.6 days) compared with HuNoV alone pigs (7.0 ± 1.0 days). By immunofluorescent staining, HuNoV antigen-positive bacteria were detected on the surface of the intestinal epithelium, possibly enhancing attachment of HuNoV to enterocytes, suggesting a potential mechanism by which intestinal colonization with E. fergusonii promoted infectivity of GII.12 HuNoV in Gn pigs.
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Affiliation(s)
- Kwonil Jung
- Center for Food Animal Health, Department of Animal Sciences, College of Food, Agricultural, and Environmental Sciences, The Ohio State University, Wooster, Ohio, USA.
| | - Qiuhong Wang
- Center for Food Animal Health, Department of Animal Sciences, College of Food, Agricultural, and Environmental Sciences, The Ohio State University, Wooster, Ohio, USA
| | - Kyeong-Ok Chang
- Diagnostic Medicine and Pathobiology, College of Veterinary Medicine, Kansas State University, Manhattan, Kansas, USA
| | - Linda J Saif
- Center for Food Animal Health, Department of Animal Sciences, College of Food, Agricultural, and Environmental Sciences, The Ohio State University, Wooster, Ohio, USA.
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Bai GH, Tsai MC, Lin SC, Hsu YH, Chen SY. Unraveling the interplay between norovirus infection, gut microbiota, and novel antiviral approaches: a comprehensive review. Front Microbiol 2023; 14:1212582. [PMID: 37485533 PMCID: PMC10359435 DOI: 10.3389/fmicb.2023.1212582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 06/15/2023] [Indexed: 07/25/2023] Open
Abstract
Norovirus infection is a leading cause of acute gastroenteritis worldwide and can also cause harmful chronic infections in individuals with weakened immune systems. The role of the gut microbiota in the interactions between the host and noroviruses has been extensively studied. While most past studies were conducted in vitro or focused on murine noroviruses, recent research has expanded to human noroviruses using in vivo or ex vivo human intestinal enteroids culture studies. The gut microbiota has been observed to have both promoting and inhibiting effects on human noroviruses. Understanding the interaction between noroviruses and the gut microbiota or probiotics is crucial for studying the pathogenesis of norovirus infection and its potential implications, including probiotics and vaccines for infection control. Recently, several clinical trials of probiotics and norovirus vaccines have also been published. Therefore, in this review, we discuss the current understanding and recent updates on the interactions between noroviruses and gut microbiota, including the impact of norovirus on the microbiota profile, pro-viral and antiviral effects of microbiota on norovirus infection, the use of probiotics for treating norovirus infections, and human norovirus vaccine development.
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Affiliation(s)
- Geng-Hao Bai
- Department of Internal Medicine, National Taiwan University Hospital, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Meng-Chen Tsai
- Department of General Medicine, Taipei Medical University Hospital, Taipei, Taiwan
| | - Sheng-Chieh Lin
- Department of Pediatrics, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Pediatrics, Division of Allergy, Asthma and Immunology, Shuang Ho Hospital, New Taipei, Taiwan
| | - Yi-Hsiang Hsu
- Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States
- Broad Institute of MIT and Harvard, Cambridge, MA, United States
| | - Shih-Yen Chen
- Department of Pediatrics, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Pediatrics, Division of Pediatric Gastroenterology and Hepatology, Shuang Ho Hospital, New Taipei, Taiwan
- TMU Research Center for Digestive Medicine, Taipei Medical University, Taipei, Taiwan
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Yang Y, Su W, Zang C, Tan Y, Zhang Y, Zhou Z, Lu W, Wu S, Zhang X, Wu C. Traditional Chinese medicines (TCMs) with varied meridians (Gui-Jing) differentially alleviate the adverse impact of Coptis chinensis on gut microbiota. JOURNAL OF ETHNOPHARMACOLOGY 2023; 307:116256. [PMID: 36791931 DOI: 10.1016/j.jep.2023.116256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 02/06/2023] [Accepted: 02/07/2023] [Indexed: 06/18/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The meridian (GuiJing) theory is a unique theory of traditional Chinese medicine (TCM) which has been guiding the clinical practice of TCM for thousands of years, but physiological foundation of TCM's meridian remains to be clarified. Recent investigations have marked gut microbiota as a key mediator for the pharmacological effects of various TCMs. However, most studies focus on the response of gut microbes to a single drug or formula, the interactive effects of different drugs on gut microbiota are scarcely investigated. AIM OF THE STUDY In this work, we evaluated the co-regulatory effects of different TCMs on gut microbiota when they were individually combined with Coptis chinensis (HL), and assessed the relationship between gut microbiota and the GuiJing of TCMs. MATERIALS AND METHODS Normal C57BL/6 mice were gavaged with HL extract for 14 days to disrupt the gut microbial community. Simultaneously, animals were treated with different TCMs which all possess antimicrobial activity but belong to different meridians. The gut microbiota was analyzed by full-length 16S rRNA gene amplicon sequencing to get a thorough bacterial profile at the species level. RESULTS Administration of HL dramatically disrupted the gut microbiota and decreased the alpha diversity. Co-administration of different TCMs alleviated the adverse impact of HL on gut microbiota in a meridian-dependent manner. TCMs belonging to Shaoyin meridian moderately shifted the gut microbiota, while TCMs belonging to Taiyin and especially Jueyin meridians remarkably recovered the gut microbial community to the normal status. Decreased Firmicutes (Clostridia and Bacilli) and Actinobacteria (Bifidobacteriales) and increased Proteobacteria (Enterobacteriaceae) were main features of HL-induced gut dysbiosis. TCMs belonging to Shaoyin, Taiyin and Jueyin meridians gradually reversed the abundance of these bacteria to their normal levels. Simultaneously, the promoting effect of HL on beneficial bacteria such as Akkermansia muciniphila and Blautia coccoides was substantially preserved when co-administration of these TCMs, suggesting that co-treatment with these TCMs may reduce the toxicity of HL without deteriorating its beneficial effects. CONCLUSION Combination of special TCMs may alleviate the adverse effect of HL on gut microbiota while preserving its beneficial actions. Gut microbiota may be a potential biological indicator of the meridian of TCMs.
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Affiliation(s)
- Yanan Yang
- Pharmacology and Toxicology Research Center, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China.
| | - Wenquan Su
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, 100700, China.
| | - Chenchen Zang
- Pharmacology and Toxicology Research Center, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100193, China.
| | - Yinfeng Tan
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Key Laboratory for Research and Development of Tropical TCMs, School of Pharmacy, Hainan Medical University, Haikou, 570199, China.
| | - Yong Zhang
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Key Laboratory for Research and Development of Tropical TCMs, School of Pharmacy, Hainan Medical University, Haikou, 570199, China.
| | - Zhi Zhou
- Reproductive Medical Center,Hainan Woman and Children's Medical Center, Haikou, 570206, China.
| | - Weiying Lu
- Reproductive Medical Center,Hainan Woman and Children's Medical Center, Haikou, 570206, China.
| | - Shengxian Wu
- Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, 100700, China.
| | - Xiaopo Zhang
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Key Laboratory for Research and Development of Tropical TCMs, School of Pharmacy, Hainan Medical University, Haikou, 570199, China.
| | - Chongming Wu
- School of Chinese Materia Medica, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
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Ren S, Wang C, Chen A, Lv W, Gao R. The Probiotic Lactobacillus paracasei Ameliorates Diarrhea Cause by Escherichia coli O8via Gut Microbiota Modulation1. Front Nutr 2022; 9:878808. [PMID: 35662940 PMCID: PMC9159302 DOI: 10.3389/fnut.2022.878808] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 03/30/2022] [Indexed: 12/26/2022] Open
Abstract
Introduction Koumiss is a fermented horse milk food containing abundant probiotics. Lactobacillus paracasei is a bacterial strain isolated from koumiss that helps regulate the intestinal microbiota. One of the major cause of diarrhea is an imbalance of the intestinal flora. The aim of this study was to investigate whether Lactobacillus paracasei can ameliorate E. coli-induced diarrhea and modulate the gut microbiota. Methods Mouse models of diarrhea were established via intragastric E. coli O8 administration. We then attempted to prevent or treat diarrhea in the mice via intragastric administration of a 3 × 108 CFU/mL L. paracasei cell suspension. The severity of diarrhea was evaluated based on the body weight, diarrhea rate, and index, fecal diameter, ileum injury, hematoxylin-eosin (H&E) staining, and diamine oxidase (DAO) and zonulin expression. Expression of the tight junction (TJ) proteins claudin-1, occludin, and zona occludens (ZO-)1 were detected by immunohistochemistry (IHC). Gastrointestinal mRNA expression levels of interleukin (IL)-6, IL-1β, and tumor necrosis factor (TNF)-α were detected by real-time polymerase chain reaction (RT-PCR). The microbial composition was analyzed by 16s rRNA sequencing. Results The L. paracasei demonstrated excellent therapeutic efficacy against diarrhea. It elevated the TJ protein levels and downregulated proinflammatory cytokines IL-6, IL-1β, TNF-α, and p65, myosin light chain 2 (MLC2), myosin light chain kinase (MLCK). Moreover L. paracasei increased those bacteria, which can product short-chain fatty acid (SCFA) such Alistipes, Odoribacter, Roseburia, and Oscillibacter. Conclusion L. paracasei ameliorated diarrhea by inhibiting activation of the nuclear factor kappa B (NF-κB)-MLCK pathway and increasing the abundance of gut microbiota that produce SCFA.
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Affiliation(s)
- Shunan Ren
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Chunjie Wang
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
- *Correspondence: Chunjie Wang,
| | - Aorigele Chen
- College of Animal Science, Inner Mongolia Agricultural University, Hohhot, China
| | - Wenting Lv
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
| | - Ruijuan Gao
- College of Veterinary Medicine, Inner Mongolia Agricultural University, Hohhot, China
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