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Zheng Y, Ding Y, Xu M, Chen H, Zhang H, Liu Y, Shen W, Li J. Gut Microbiota Contributes to Host Defense Against Klebsiella pneumoniae-Induced Liver Abscess. J Inflamm Res 2021; 14:5215-5225. [PMID: 34675599 PMCID: PMC8519413 DOI: 10.2147/jir.s334581] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 09/29/2021] [Indexed: 12/27/2022] Open
Abstract
Purpose Klebsiella pneumoniae-induced liver abscess (KLA) is a type of pyogenic liver abscess (PLA), which is a distinct invasive syndrome that has been increasingly reported worldwide over the past two decades. The intestinal microbiota is increasingly recognized as an important modulator that can promote and maintain host immune homeostasis. However, its precise role in liver abscess is unknown. We aimed to investigate the function of the gut microbiota in the host defense against K. pneumoniae infection. Methods We constructed C57BL/6J mice with KLA and analyzed the diversity and richness of the intestinal microflora by 16S rRNA sequencing. Next, to create a microbiota-depleted (MD) mouse model, we administered multiple broad-spectrum antibiotics and validated the model using 16S rRNA sequencing. At 48 h after K. pneumoniae infection, we assessed the general health condition, liver injury, bacterial loads, and inflammatory factor levels in MD+KLA mice. Additionally, fecal microbiota transplantation (FMT) was conducted in another group of MD+KLA mice prior to K. pneumoniae infection, and we assessed whether the transplantation changed the outcomes. Results The diversity of the intestinal flora was significantly changed in KLA mice compared to control mice, with a decrease in beneficial bacteria and an increase in harmful bacteria. The MD+KLA mice exhibited impaired antimicrobial capacity, reduced survival, increased inflammation and liver damage at 48 h after K. pneumoniae infection compared to the KLA mice. However, FMT normalized the inflammatory cytokine levels, reduced liver damage, and increased survival. Conclusion This study identified the gut microbiota as a protective factor against K. pneumoniae infection. The role of FMT in KLA should be investigated in future clinical studies.
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Affiliation(s)
- Yahong Zheng
- Department of Infectious Diseases, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - Yuting Ding
- Department of Infectious Diseases, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - Mengran Xu
- Department of Infectious Diseases, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - Haoran Chen
- Department of Infectious Diseases, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - Hui Zhang
- Department of Infectious Diseases, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - Yanyan Liu
- Department of Infectious Diseases, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, People's Republic of China.,Anhui Center for Surveillance of Bacterial Resistance, Hefei, Anhui, People's Republic of China.,Institute of Bacterial Resistance, Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - Weihua Shen
- Department of Special Clinic, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - Jiabin Li
- Department of Infectious Diseases, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, People's Republic of China.,Anhui Center for Surveillance of Bacterial Resistance, Hefei, Anhui, People's Republic of China.,Institute of Bacterial Resistance, Anhui Medical University, Hefei, Anhui, People's Republic of China.,Department of Infectious Diseases, The Chaohu Affiliated Hospital of Anhui Medical University, Hefei, Anhui, People's Republic of China
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Chen N, Jin TT, Liu WN, Zhu DQ, Chen YY, Shen YL, Ling ZX, Wang HJ, Zhang LP. Gastric Microbiota Alteration in Klebsiella pneumoniae-Caused Liver Abscesses Mice. Pol J Microbiol 2019; 68:247-254. [PMID: 31250595 PMCID: PMC7256812 DOI: 10.33073/pjm-2019-026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 03/14/2019] [Accepted: 03/24/2019] [Indexed: 12/30/2022] Open
Abstract
Gastric microbiota provides a biological barrier against the invasion of foreign pathogens from the oral cavity, playing a vital role in maintaining gastrointestinal health. Klebsiella spp. of oral origin causes various infections not only in gastrointestinal tract but also in other organs, with Klebsiella pneumoniae serotype K1 resulting in a liver abscess (KLA) through oral inoculation in mice. However, the relationship between gastric microbiota and the extra-gastrointestinal KLA infection is not clear. In our study, a 454 pyrosequencing analysis of the bacterial 16S rRNA gene shows that the composition of gastric mucosal microbiota in mice with or without KLA infection varies greatly after oral inoculation with K. pneumoniae serotype K1 isolate. Interestingly, only several bacteria taxa show a significant change in gastric mucosal microbiota of KLA mice, including the decreased abundance of Bacteroides, Alisptipes and increased abundance of Streptococcus. It is worth noting that the abundance of Klebsiella exhibits an obvious increase in KLA mice, which might be closely related to KLA infection. At the same time, the endogenous antibiotics, defensins, involved in the regulation of the bacterial microbiota also show an increase in stomach and intestine. All these findings indicate that liver abscess caused by K. pneumoniae oral inoculation has a close relationship with gastric microbiota, which might provide important information for future clinical treatment.
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Affiliation(s)
- Nan Chen
- Central Laboratory, Affiliated Hospital of Hebei University and Baoding , China ; Department of Medical Microbiology, Medicine College, Hebei University , Baoding , China
| | - Tong-Tong Jin
- Department of Medical Microbiology, Medicine College, Hebei University , Baoding , China ; Central Laboratory, Affiliated Hospital of Hebei University and Baoding , China
| | - Wen-Ning Liu
- Department of Medical Microbiology, Medicine College, Hebei University , Baoding , China ; Central Laboratory, Affiliated Hospital of Hebei University and Baoding , China
| | - Dong-Qing Zhu
- Department of Medical Microbiology, Medicine College, Hebei University , Baoding , China ; Central Laboratory, Affiliated Hospital of Hebei University and Baoding , China
| | - Ying-Ying Chen
- Department of Pharmacology, Zhejiang Medical College, Zhejiang University , Hangzhou , China
| | - Yue-Liang Shen
- Department of Pharmacology, Zhejiang Medical College, Zhejiang University , Hangzhou , China
| | - Zong-Xin Ling
- Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, the First Affiliated Hospital, College of Medicine, Zhejiang University , Hangzhou , China
| | - Hong-Jie Wang
- Central Laboratory, Affiliated Hospital of Hebei University and Baoding , China ; Department of Medical Microbiology, Medicine College, Hebei University , Baoding , China
| | - Li-Ping Zhang
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of Ministry of Education, Hebei University , Baoding , China ; College of Life Sciences, Hebei University , Baoding , China
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Chen X, Qin S, Zhao X, Zhou S. l-Proline protects mice challenged by Klebsiella pneumoniae bacteremia. JOURNAL OF MICROBIOLOGY, IMMUNOLOGY, AND INFECTION = WEI MIAN YU GAN RAN ZA ZHI 2019; 54:213-220. [PMID: 31324551 DOI: 10.1016/j.jmii.2019.05.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Revised: 04/09/2019] [Accepted: 05/29/2019] [Indexed: 01/19/2023]
Abstract
OBJECTIVE K. pneumoniae, a common pathogen that frequently causes bacteremia in clinic, is unresponsive to most of known antibiotics, thus cumulatively exacerbating empirical therapy failures. Effective strategies to control Klebsiella pneumoniae bacteremia are in high demand. One possibility is to mobilize host defense mechanisms against bacterial pathogens. METHODS We employed GC/MS-based metabolomics to identify the changes of metabolism in mice challenged by K. pneumoniae (ATCC 43816) bacteremia. RESULTS Compared with the mice that compromised from K. pneumoniae bacteremia, mice that survived from infection displayed the varied metabolomic profile. The differential analysis of metabolome showed that Ethanedioic acid, d-Glucose, l-Glutamine, Myo-inositol, and l-Proline were more likely associated with the host surviving a K. pneumoniae bacteremia. Further pathway enrichment analysis proposed that arginine and proline metabolism involved in outcome of K. pneumoniae bacteremia. The follow-up data showed that exogenous l-Proline but not d-Proline could decline the loads of Klebsiella pneumonia in infected blood and tissues (lung, liver and spleen) and increase the mouse survival. CONCLUSION Our study provides an exercisable strategy of identifying metabolic biomarkers from surviving host and highlights the possibility of utilizing the metabolic biomarker as a therapy for K. pneumoniae bacteremia.
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Affiliation(s)
- Xuedong Chen
- Zhujiang Hospital of Southern Medical University, Guangzhou, Guangdong, China
| | - Sihua Qin
- Zhujiang Hospital of Southern Medical University, Guangzhou, Guangdong, China
| | - Xin Zhao
- Zhujiang Hospital of Southern Medical University, Guangzhou, Guangdong, China
| | - Shaosong Zhou
- Zhujiang Hospital of Southern Medical University, Guangzhou, Guangdong, China.
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Chang Z, Wang H, Li B, Liu Z, Zheng J. Metabolic Characterization of Peripheral Host Responses to Drainage-Resistant Klebsiella pneumoniae Liver Abscesses by Serum 1H-NMR Spectroscopy. Front Cell Infect Microbiol 2018; 8:174. [PMID: 29911073 PMCID: PMC5992471 DOI: 10.3389/fcimb.2018.00174] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Accepted: 05/07/2018] [Indexed: 01/29/2023] Open
Abstract
Purpose: To explore the metabolic characterization of host responses to drainage-resistant Klebsiella pneumoniae liver abscesses (DRKPLAs) with serum 1H-nuclear magnetic resonance (NMR) spectroscopy. Materials and Methods: The hospital records of all patients with a diagnosis of a liver abscess between June 2015 and December 2016 were retrieved from an electronic hospital database. Eighty-six patients with Klebsiella pneumoniae (K. pneumoniae) liver abscesses who underwent percutaneous drainage were identified. Twenty patients with confirmed DRKPLAs were studied. Moreover, we identified 20 consecutive patients with drainage-sensitive Klebsiella pneumoniae liver abscesses (DSKPLAs) as controls. Serum samples from the two groups were analyzed with 1H NMR spectroscopy. Partial least squares discriminant analysis (PLS-DA) was used to perform 1H NMR metabolic profiling. Metabolites were identified using the Human Metabolome Database, and pathway analysis was performed with MetaboAnalyst 3.0. Results: The PLS-DA test was able to discriminate between the two groups. Five key metabolites that contributed to their discrimination were identified. Glucose, lactate, and 3-hydroxybutyrate were found to be upregulated in DRKPLAs, whereas glutamine and alanine were downregulated compared with the DSKPLAs. Pathway analysis indicated that amino acid metabolisms were significantly different between the DRKPLAs and the DSKPLAs. The D-glutamine and D-glutamate metabolisms exhibited the greatest influences. Conclusions: The five key metabolites identified in our study may be potential targets for guiding novel therapeutics of DRKPLAs and are worthy of additional investigation.
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Affiliation(s)
- Zhihui Chang
- Department of Radiology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Hairui Wang
- Department of Radiology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Beibei Li
- Department of Radiology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Zhaoyu Liu
- Department of Radiology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Jiahe Zheng
- Department of Radiology, Shengjing Hospital of China Medical University, Shenyang, China
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Altered Profiles of Gut Microbiota in Klebsiella pneumoniae-Induced Pyogenic Liver Abscess. Curr Microbiol 2018; 75:952-959. [PMID: 29637226 DOI: 10.1007/s00284-018-1471-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Accepted: 03/05/2018] [Indexed: 02/07/2023]
Abstract
Intestinal microbiota plays a crucial role in preventing the colonization and invasion by pathogens, and disruption of microbiota may cause opportunistic infections and diseases. Pathogens often have strategies to escape from the colonization resistance mediated by microbiota, but whether they also modulate the microbiota composition is still a topic of investigation. In the present study, we addressed this question using an opportunistic pathogen, Klebsiella pneumoniae serotype K1, which is known to cause pyogenic liver abscess (KLA) in about 30% of mice. We examined the effect of K. pneumoniae infection on cecal microbiota composition by performing high-throughput 454 pyrosequencing of the hypervariable V3-V4 regions of bacterial 16S rRNA gene. Our data revealed that K. pneumoniae inoculation substantially changed the cecal microbiota composition when analyzed at the phylum, order, and family levels. Most strikingly, the KLA-infected mice had significantly increased abundance of Bacteroidales and Enterobacteriales and decreased abundance of Lactobacillales and Eggerthellales. Furthermore, by comparing the infected mice with or without KLA disease symptoms, we identified specific microbiota changes associated with the KLA disease induction. Especially, the KLA group had dramatically decreased sequence identical to Lactobacillus compared with non-KLA mice. These findings suggest that the pathogenic process of KLA infection may involve alteration of microbiota compositions, particularly reduction in Lactobacillus.
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