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Zhou Y, Bai L, Tang W, Yang W, Sun L. Research progress in the pathogenesis of sepsis-associated encephalopathy. Heliyon 2024; 10:e33458. [PMID: 39027435 PMCID: PMC11254713 DOI: 10.1016/j.heliyon.2024.e33458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 06/18/2024] [Accepted: 06/21/2024] [Indexed: 07/20/2024] Open
Abstract
Sepsis is a syndrome that causes dysfunction of multiple organs due to the host's uncontrolled response to infection and is a significant contributor to morbidity and mortality in intensive care units worldwide. Surviving patients are often left with acute brain injury and long-term cognitive impairment, known as sepsis-associated encephalopathy (SAE). In recent years, researchers have directed their focus towards the pathogenesis of SAE. However, due to the complexity of its development, there remains a lack of effective treatment measures that arise as a serious issue affecting the prognosis of sepsis patients. Further research on the possible causes of SAE aims to provide clinicians with potential therapeutic targets and help develop targeted prevention strategies. This paper aims to review recent research on the pathogenesis of SAE, in order to enhance our understanding of this syndrome.
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Affiliation(s)
- Yue Zhou
- Teaching Department, First Hospital of Jilin University, Changchun, 130021, China
| | - Lu Bai
- Department of Medical Oncology, Dalian NO.3 People's Hospital, Dalian, 116091, China
| | - Wenjing Tang
- Department of Emergency Medicine, First Hospital of Jilin University, Changchun, 130021, China
| | - Weiying Yang
- Department of Emergency Medicine, First Hospital of Jilin University, Changchun, 130021, China
| | - Lichao Sun
- Department of Emergency Medicine, First Hospital of Jilin University, Changchun, 130021, China
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Jabandziev P, Hubacek JA, Michalek J, Jouza M, Papez J, Pecl J, Slaba K, Slaby O, Urik M, Aulicka S, Kunovsky L, Michalek J, Dominik P, Kratochvil M, Klucka J, Stourac P. A Tagging Polymorphism in Fat Mass and Obesity-Associated ( FTO) Gene Is Associated with Sepsis Status in Children. ROMANIAN JOURNAL OF INTERNAL MEDICINE = REVUE ROUMAINE DE MEDECINE INTERNE 2024; 0:rjim-2024-0008. [PMID: 38470396 DOI: 10.2478/rjim-2024-0008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2024] [Indexed: 03/13/2024]
Abstract
INTRODUCTION Sepsis is one of the most common causes of death in patients admitted to intensive care units (ICUs). The development of sepsis is significantly influenced by genetic predisposition. In this study, we highlight a potential association between a variant of the fat mass and obesity-associated (FTO) gene and risk of sepsis in children and adolescents. METHODS We investigated a first-intron tagging FTO polymorphism (rs17817449) by comparing a severe condition (SC) group, comprising 598 paediatric patients (ages 0-19 years) admitted to an ICU with fever, systemic inflammatory response syndrome (SIRS), sepsis, severe sepsis, septic shock, or multiple organ dysfunction syndrome (MODS), with a control group consisting of 616 healthy young adults. RESULTS We observed a lower prevalence (p < 0.01; OR = 0.59, 95% CI = 0.39-0.87) of the FTO TT genotype in febrile and SIRS patients compared to patients with severe illness. There was a borderline trend towards a lower prevalence of the FTO TT genotype in the control group compared to the SC group (p < 0.09, OR = 0.81, 95% CI = 0.62-1.06). CONCLUSIONS Our findings suggest that rs17817449, a common FTO polymorphism, may be a predictor of sepsis in paediatric patients, and that higher body weight is protective against this clinical complication.
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Affiliation(s)
- Petr Jabandziev
- 1Department of Pediatrics, University Hospital Brno, Černopolní 212/9, 625 00, Brno, Czech Republic
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
- 3Central European Institute of Technology, Žerotínovo nám. 617/9, 601 77, Brno, Czech Republic
| | - Jaroslav Alois Hubacek
- 4Experimental Medicine Centre, Institute for Clinical and Experimental Medicine, Vídeňská 1958/9, 140 21, Prague, Czech Republic
- 5Third Department of Internal Medicine, First Faculty of Medicine, Charles University, U Nemocnice 1, 121 08, Prague, Czech Republic
| | - Jaroslav Michalek
- 6Department of Quantitative Methods, University of Defence, Kounicova 156/65, 662 10, Brno, Czech Republic
| | - Martin Jouza
- 1Department of Pediatrics, University Hospital Brno, Černopolní 212/9, 625 00, Brno, Czech Republic
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
| | - Jan Papez
- 1Department of Pediatrics, University Hospital Brno, Černopolní 212/9, 625 00, Brno, Czech Republic
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
| | - Jakub Pecl
- 1Department of Pediatrics, University Hospital Brno, Černopolní 212/9, 625 00, Brno, Czech Republic
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
| | - Katerina Slaba
- 1Department of Pediatrics, University Hospital Brno, Černopolní 212/9, 625 00, Brno, Czech Republic
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
| | - Ondrej Slaby
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
- 3Central European Institute of Technology, Žerotínovo nám. 617/9, 601 77, Brno, Czech Republic
| | - Milan Urik
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
| | - Stefania Aulicka
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
| | - Lumir Kunovsky
- 7Department of Gastroenterology and Internal Medicine, University Hospital Brno, Jihlavská 340, 625 00, Brno, Czech Republic
- 8Department of Surgery, University Hospital Brno, Jihlavská 340, 625 00, Brno, Czech Republic
| | | | - Petr Dominik
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
- 10Department of Pediatric Anesthesiology and Intensive Care Medicine, University Hospital Brno, Kamenice 5, 625 00, Brno, Czech Republic
| | - Milan Kratochvil
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
- 10Department of Pediatric Anesthesiology and Intensive Care Medicine, University Hospital Brno, Kamenice 5, 625 00, Brno, Czech Republic
| | - Jozef Klucka
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
- 10Department of Pediatric Anesthesiology and Intensive Care Medicine, University Hospital Brno, Kamenice 5, 625 00, Brno, Czech Republic
| | - Petr Stourac
- 2Faculty of Medicine, Masaryk University, Černopolní 212/9, 625 00, Brno, Czech Republic
- 10Department of Pediatric Anesthesiology and Intensive Care Medicine, University Hospital Brno, Kamenice 5, 625 00, Brno, Czech Republic
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Chang B, Wang Y, Tu W, Zhang Z, Pu Y, Xie L, Yuan F, Gao Y, Xu N, Yao Q. Regulatory effects of mangiferin on LPS-induced inflammatory responses and intestinal flora imbalance during sepsis. Food Sci Nutr 2024; 12:2068-2080. [PMID: 38455195 PMCID: PMC10916552 DOI: 10.1002/fsn3.3907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 11/19/2023] [Accepted: 12/08/2023] [Indexed: 03/09/2024] Open
Abstract
Studies suggest that mangiferin (MAF) has good therapeutic effects on chronic bronchitis and hepatitis. Also, it is one of the antiviral ingredients in Anemarrhena asphodeloides Bunge. However, its effect on the LPS-induced inflammation and intestinal flora during sepsis remains unclear yet. In the present study, LPS-stimulated inflammation RAW264.7 cells and LPS-induced sepsis mice were used to evaluate the efficacy of MAF in vitro and in vivo. 16S rDNA sequencing was performed to analyze the characteristics of intestinal flora of the sepsis mice. It has been demonstrated that MAF (12.5 and 25 μg/mL) significantly inhibited protein expressions of TLR4, MyD88, NF-κB, and TNF-α in the LPS-treated cells and reduced the supernatant TNF-α and IL-6 levels. In vivo, MAF (20 mg/kg) markedly protected the sepsis mice and reduced the serum TNF-α and IL-6 levels. Also, MAF significantly downregulated the protein expressions of TLR4, NF-κB, and MyD88 in the livers. Importantly, MAF significantly attenuated the pathological injuries of the livers and small intestines. Further, MAF significantly increased proportion of Bacteroidota and decreased the proportions of Firmicutes, Desulfobacterota, Actinobacteriota, and Proteobacteria at phylum level, and it markedly reduced the proportions of Escherichia-Shigella, Pseudoalteromonas, Staphylococcus at genus level. Moreover, MAF affects some metabolism-related pathways such as citrate cycle (TCA cycle), lipoic acid metabolism, oxidative phosphorylation, bacterial chemotaxis, fatty acid biosynthesis, and peptidoglycan biosynthesis of the intestinal flora. Thus, it can be concluded that MAF as a treatment reduces the inflammatory responses in vitro and in vivo by inhibiting the TLR4/ MyD88/NF-κB pathway, and corrects intestinal flora imbalance during sepsis to some degree.
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Affiliation(s)
- Bo‐tao Chang
- Department of PostgraduateGuizhou University of Traditional Chinese MedicineGuiyangChina
| | - Yang Wang
- Department of General SurgeryThe First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and TechnologyKunmingChina
| | - Wen‐lian Tu
- Department of PharmacyThe First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and TechnologyKunmingChina
| | - Zhi‐qing Zhang
- Department of PharmacyThe First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and TechnologyKunmingChina
| | - Yan‐fang Pu
- Department of PharmacyThe First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and TechnologyKunmingChina
| | - Li Xie
- Department of PharmacyThe First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and TechnologyKunmingChina
| | - Fang Yuan
- Department of PharmacyThe First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and TechnologyKunmingChina
| | - Ying Gao
- Department of PharmacyThe First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and TechnologyKunmingChina
- The First Affiliated Hospital, Guizhou University of Traditional Chinese MedicineGuiyangChina
| | - Ning Xu
- Department of Clinical LaboratoryThe First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and TechnologyKunmingChina
| | - Qi Yao
- Department of PharmacyThe First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and TechnologyKunmingChina
- The First Affiliated Hospital, Guizhou University of Traditional Chinese MedicineGuiyangChina
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Zhang J, Chen S, Hu X, Huang L, Loh P, Yuan X, Liu Z, Lian J, Geng L, Chen Z, Guo Y, Chen B. The role of the peripheral system dysfunction in the pathogenesis of sepsis-associated encephalopathy. Front Microbiol 2024; 15:1337994. [PMID: 38298892 PMCID: PMC10828041 DOI: 10.3389/fmicb.2024.1337994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 01/04/2024] [Indexed: 02/02/2024] Open
Abstract
Sepsis is a condition that greatly impacts the brain, leading to neurological dysfunction and heightened mortality rates, making it one of the primary organs affected. Injury to the central nervous system can be attributed to dysfunction of various organs throughout the entire body and imbalances within the peripheral immune system. Furthermore, central nervous system injury can create a vicious circle with infection-induced peripheral immune disorders. We collate the pathogenesis of septic encephalopathy, which involves microglial activation, programmed cell death, mitochondrial dysfunction, endoplasmic reticulum stress, neurotransmitter imbalance, and blood-brain barrier disruption. We also spotlight the effects of intestinal flora and its metabolites, enterocyte-derived exosomes, cholinergic anti-inflammatory pathway, peripheral T cells and their cytokines on septic encephalopathy.
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Affiliation(s)
- Jingyu Zhang
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Shuangli Chen
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xiyou Hu
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Lihong Huang
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - PeiYong Loh
- School of International Education, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xinru Yuan
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Zhen Liu
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Jinyu Lian
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Lianqi Geng
- Binhai New Area Hospital of TCM, Fourth Teaching Hospital of Tianjin University of TCM, Tianjin, China
| | - Zelin Chen
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Modern Chinese Medicine Theory of Innovation and Application, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- School of Acupuncture and Moxibustion and Tuina, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
| | - Yi Guo
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Modern Chinese Medicine Theory of Innovation and Application, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Bo Chen
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Binhai New Area Hospital of TCM, Fourth Teaching Hospital of Tianjin University of TCM, Tianjin, China
- Tianjin Key Laboratory of Modern Chinese Medicine Theory of Innovation and Application, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- School of Acupuncture and Moxibustion and Tuina, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
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Zhu L, Zhang H, Zhang X, Xia L. RNA m6A methylation regulators in sepsis. Mol Cell Biochem 2023:10.1007/s11010-023-04841-w. [PMID: 37659034 DOI: 10.1007/s11010-023-04841-w] [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: 07/07/2023] [Accepted: 08/16/2023] [Indexed: 09/05/2023]
Abstract
N6-methyladenosine (m6A) modification is a class of epitope modifications that has received significant attention in recent years, particularly in relation to its role in various diseases, including sepsis. Epigenetic research has increasingly focused on m6A modifications, which is influenced by the dynamic regulation of three protein types: ‟Writers" (such as METTL3/METTL14/WTAP)-responsible for m6A modification; ‟Erasers" (FTO and ALKBH5)-involved in m6A de-modification; and ‟Readers" (YTHDC1/2, YTHDF1/2/3)-responsible for m6A recognition. Sepsis, a severe and fatal infectious disease, has garnered attention regarding the crucial effect of m6A modifications on its development. In this review, we attempted to summarize the recent studies on the involvement of m6A and its regulators in sepsis, as well as the significance of m6A modifications and their regulators in the development of novel drugs and clinical treatment. The potential value of m6A modifications and modulators in the diagnosis, treatment, and prognosis of sepsis has also been discussed.
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Affiliation(s)
- Lin Zhu
- School of Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, People's Republic of China
| | - Hairong Zhang
- Department of Obstetrics and Gynecology, Shandong Provincial Third Hospital, Jinan, 250031, People's Republic of China.
| | - Xiaoyu Zhang
- School of Chinese Medicine, Shandong University of Traditional Chinese Medicine, Jinan, People's Republic of China
| | - Lei Xia
- Department of Pathology, Shandong University of Traditional Chinese Medicine, Jinan, 250355, People's Republic of China.
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Xie G, Hu Q, Cao X, Wu W, Dai P, Guo W, Wang O, Wei L, Ren R, Li Y. Clinical identification and microbiota analysis of Chlamydia psittaci- and Chlamydia abortus- pneumonia by metagenomic next-generation sequencing. Front Cell Infect Microbiol 2023; 13:1157540. [PMID: 37434780 PMCID: PMC10331293 DOI: 10.3389/fcimb.2023.1157540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 05/29/2023] [Indexed: 07/13/2023] Open
Abstract
Introduction Recently, the incidence of chlamydial pneumonia caused by rare pathogens such as C. psittaci or C. abortus has shown a significant upward trend. The non-specific clinical manifestations and the limitations of traditional pathogen identification methods determine that chlamydial pneumonia is likely to be poorly diagnosed or even misdiagnosed, and may further result in delayed treatment or unnecessary antibiotic use. mNGS's non-preference and high sensitivity give us the opportunity to obtain more sensitive detection results than traditional methods for rare pathogens such as C. psittaci or C. abortus. Methods In the present study, we investigated both the pathogenic profile characteristics and the lower respiratory tract microbiota of pneumonia patients with different chlamydial infection patterns using mNGS. Results More co-infecting pathogens were found to be detectable in clinical samples from patients infected with C. psittaci compared to C. abortus, suggesting that patients infected with C. psittaci may have a higher risk of mixed infection, which in turn leads to more severe clinical symptoms and a longer disease course cycle. Further, we also used mNGS data to analyze for the first time the characteristic differences in the lower respiratory tract microbiota of patients with and without chlamydial pneumonia, the impact of the pattern of Chlamydia infection on the lower respiratory tract microbiota, and the clinical relevance of these characteristics. Significantly different profiles of lower respiratory tract microbiota and microecological diversity were found among different clinical subgroups, and in particular, mixed infections with C. psittaci and C. abortus resulted in lower lung microbiota diversity, suggesting that chlamydial infections shape the unique lung microbiota pathology, while mixed infections with different Chlamydia may have important effects on the composition and diversity of the lung microbiota. Discussion The present study provides possible evidences supporting the close correlation between chlamydial infection, altered microbial diversity in patients' lungs and clinical parameters associated with infection or inflammation in patients, which also provides a new research direction to better understand the pathogenic mechanisms of pulmonary infections caused by Chlamydia.
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Affiliation(s)
- Gongxun Xie
- Department of Pathology, Hunan Provincial People’s Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan, China
| | - Qing Hu
- Department of Pathology, Hunan Provincial People’s Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan, China
| | - Xuefang Cao
- Institute of Innovative Applications, MatriDx Biotechnology Co., Ltd, Hangzhou, Zhejiang, China
| | - Wenjie Wu
- Institute of Innovative Applications, MatriDx Biotechnology Co., Ltd, Hangzhou, Zhejiang, China
| | - Penghui Dai
- Department of Pathology, Hunan Provincial People’s Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan, China
| | - Wei Guo
- Department of Pathology, Hunan Provincial People’s Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan, China
| | - Ouxi Wang
- Institute of Innovative Applications, MatriDx Biotechnology Co., Ltd, Hangzhou, Zhejiang, China
| | - Liang Wei
- Institute of Innovative Applications, MatriDx Biotechnology Co., Ltd, Hangzhou, Zhejiang, China
| | - Ruotong Ren
- Institute of Innovative Applications, MatriDx Biotechnology Co., Ltd, Hangzhou, Zhejiang, China
- Foshan Branch, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China
| | - Yanchun Li
- Department of Pathology, Hunan Provincial People’s Hospital, The First Affiliated Hospital of Hunan Normal University, Changsha, Hunan, China
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7
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Chen JH, Zeng LY, Zhao YF, Tang HX, Lei H, Wan YF, Deng YQ, Liu KX. Causal effects of gut microbiota on sepsis: a two-sample Mendelian randomization study. Front Microbiol 2023; 14:1167416. [PMID: 37234519 PMCID: PMC10206031 DOI: 10.3389/fmicb.2023.1167416] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 04/18/2023] [Indexed: 05/28/2023] Open
Abstract
Background Recent studies had provided evidence that the gut microbiota is associated with sepsis. However, the potential causal relationship remained unclear. Methods The present study aimed to explore the causal effects between gut microbiota and sepsis by performing Mendelian randomization (MR) analysis utilizing publicly accessible genome-wide association study (GWAS) summary-level data. Gut microbiota GWAS (N = 18,340) were obtained from the MiBioGen study and GWAS-summary-level data for sepsis were gained from the UK Biobank (sepsis, 10,154 cases; 452,764 controls). Two strategies were used to select genetic variants, i.e., single nucleotide polymorphisms (SNPs) below the locus-wide significance level (1 × 10-5) and the genome-wide statistical significance threshold (5 × 10-8) were chosen as instrumental variables (IVs). The inverse variance weighted (IVW) was used as the primary method for MR study, supplemented by a series of other methods. Additionally, a set of sensitivity analysis methods, including the MR-Egger intercept test, Mendelian randomized polymorphism residual and outlier (MR-PRESSO) test, Cochran's Q test, and leave-one-out test, were carried out to assess the robustness of our findings. Results Our study suggested that increased abundance of Deltaproteobacteria, Desulfovibrionales, Catenibacterium, and Hungatella were negatively associated with sepsis risk, while Clostridiaceae1, Alloprevotella, LachnospiraceaeND3007group, and Terrisporobacter were positively correlated with the risk of sepsis. Sensitivity analysis revealed no evidence of heterogeneity and pleiotropy. Conclusion This study firstly found suggestive evidence of beneficial or detrimental causal associations of gut microbiota on sepsis risk by applying MR approach, which may provide valuable insights into the pathogenesis of microbiota-mediated sepsis and strategies for sepsis prevention and treatment.
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Affiliation(s)
- Jie-Hai Chen
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Li-Ying Zeng
- Guangdong Provincial Key Laboratory of Proteomics, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Yun-Feng Zhao
- Guangdong Provincial Key Laboratory of Proteomics, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Hao-Xuan Tang
- Guangdong Provincial Key Laboratory of Proteomics, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Hang Lei
- Guangdong Provincial Key Laboratory of Proteomics, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Yu-Fei Wan
- Guangdong Provincial Key Laboratory of Proteomics, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Yong-Qiang Deng
- Guangdong Provincial Key Laboratory of Proteomics, Department of Pathophysiology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Ke-Xuan Liu
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
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Chen H, Zhang X, Su H, Zeng J, Chan H, Li Q, Liu X, Zhang L, Wu WKK, Chan MTV, Chen H. Immune dysregulation and RNA N6-methyladenosine modification in sepsis. WILEY INTERDISCIPLINARY REVIEWS. RNA 2023; 14:e1764. [PMID: 36149809 DOI: 10.1002/wrna.1764] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 08/24/2022] [Accepted: 09/02/2022] [Indexed: 05/13/2023]
Abstract
Sepsis is defined as life-threatening organ dysfunction caused by the host immune dysregulation to infection. It is a highly heterogeneous syndrome with complex pathophysiological mechanisms. The host immune response to sepsis can be divided into hyper-inflammatory and immune-suppressive phases which could exist simultaneously. In the initial stage, systemic immune response is activated after exposure to pathogens. Both innate and adaptive immune cells undergo epigenomic, transcriptomic, and functional reprogramming, resulting in systemic and persistent inflammatory responses. Following the hyper-inflammatory phase, the body is in a state of continuous immunosuppression, which is related to immune cell apoptosis, metabolic failure, and epigenetic reprogramming. Immunosuppression leads to increased susceptibility to secondary infections in patients with sepsis. RNA N6-Methyladenosine (m6A) has been recognized as an indispensable epitranscriptomic modification involved in both physiological and pathological processes. Recent studies suggest that m6A could reprogram both innate and adaptive immune cells through posttranscriptional regulation of RNA metabolism. Dysregulated m6A modifications contribute to the pathogenesis of immune-related diseases. In this review, we summarize immune cell changes and the potential role of m6A modification in sepsis. This article is categorized under: RNA in Disease and Development > RNA in Disease RNA Processing > RNA Editing and Modification.
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Affiliation(s)
- Hongyan Chen
- Department of Anaesthesia and Intensive Care and Peter Hung Pain Research Institute, The Chinese University of Hong Kong, Hong Kong, China
- CUHK Shenzhen Research Institute, Shenzhen, Guangdong, China
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
- State Key Laboratory of Digestive Diseases, The Chinese University of Hong Kong, Hong Kong, China
| | - Xiaoting Zhang
- Department of Anaesthesia and Intensive Care and Peter Hung Pain Research Institute, The Chinese University of Hong Kong, Hong Kong, China
- CUHK Shenzhen Research Institute, Shenzhen, Guangdong, China
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
- State Key Laboratory of Digestive Diseases, The Chinese University of Hong Kong, Hong Kong, China
| | - Hao Su
- Department of Anaesthesia and Intensive Care and Peter Hung Pain Research Institute, The Chinese University of Hong Kong, Hong Kong, China
- CUHK Shenzhen Research Institute, Shenzhen, Guangdong, China
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
- State Key Laboratory of Digestive Diseases, The Chinese University of Hong Kong, Hong Kong, China
| | - Judeng Zeng
- Department of Anaesthesia and Intensive Care and Peter Hung Pain Research Institute, The Chinese University of Hong Kong, Hong Kong, China
- CUHK Shenzhen Research Institute, Shenzhen, Guangdong, China
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Hung Chan
- Department of Anaesthesia and Intensive Care and Peter Hung Pain Research Institute, The Chinese University of Hong Kong, Hong Kong, China
- CUHK Shenzhen Research Institute, Shenzhen, Guangdong, China
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Qing Li
- Department of Anaesthesia and Intensive Care and Peter Hung Pain Research Institute, The Chinese University of Hong Kong, Hong Kong, China
- CUHK Shenzhen Research Institute, Shenzhen, Guangdong, China
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
- State Key Laboratory of Digestive Diseases, The Chinese University of Hong Kong, Hong Kong, China
| | - Xiaodong Liu
- Department of Anaesthesia and Intensive Care and Peter Hung Pain Research Institute, The Chinese University of Hong Kong, Hong Kong, China
- CUHK Shenzhen Research Institute, Shenzhen, Guangdong, China
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Lin Zhang
- Department of Anaesthesia and Intensive Care and Peter Hung Pain Research Institute, The Chinese University of Hong Kong, Hong Kong, China
- CUHK Shenzhen Research Institute, Shenzhen, Guangdong, China
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
- State Key Laboratory of Digestive Diseases, The Chinese University of Hong Kong, Hong Kong, China
| | - William Ka Kei Wu
- Department of Anaesthesia and Intensive Care and Peter Hung Pain Research Institute, The Chinese University of Hong Kong, Hong Kong, China
- CUHK Shenzhen Research Institute, Shenzhen, Guangdong, China
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
- State Key Laboratory of Digestive Diseases, The Chinese University of Hong Kong, Hong Kong, China
| | - Matthew Tak Vai Chan
- Department of Anaesthesia and Intensive Care and Peter Hung Pain Research Institute, The Chinese University of Hong Kong, Hong Kong, China
- CUHK Shenzhen Research Institute, Shenzhen, Guangdong, China
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Huarong Chen
- Department of Anaesthesia and Intensive Care and Peter Hung Pain Research Institute, The Chinese University of Hong Kong, Hong Kong, China
- CUHK Shenzhen Research Institute, Shenzhen, Guangdong, China
- Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong, China
- State Key Laboratory of Digestive Diseases, The Chinese University of Hong Kong, Hong Kong, China
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Li F, Zhang Y, Peng Z, Wang Y, Zeng Z, Tang Z. Diagnostic, clustering, and immune cell infiltration analysis of m6A regulators in patients with sepsis. Sci Rep 2023; 13:2532. [PMID: 36781867 PMCID: PMC9925440 DOI: 10.1038/s41598-022-27039-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Accepted: 12/23/2022] [Indexed: 02/15/2023] Open
Abstract
RNA N6-methladenosine (m6A) regulators are required for a variety of biological processes, including immune responses, and increasing evidence indicates that their dysregulation is closely associated with many diseases. However, the potential roles of m6A regulators in sepsis remain unknown. We comprehensively analyzed the transcriptional variations in and interactions of 26 m6A regulators in sepsis based on the Gene Expression Omnibus (GEO) database. A random forest (RF) model and nomogram were established to predict the occurrence and risk of sepsis in patients. Then, two different m6A subtypes were defined by consensus clustering analysis, and we explored the correlation between the subtypes and immune cells. We found that 17 of the 26 m6A regulators were significantly differentially expressed between patients with and without sepsis, and strong correlations among these 17 m6A regulators were revealed. Compared with the support vector machine (SVM) model, the RF model had better predictive ability, and therefore was used to construct a reliable nomogram containing 10 candidate m6A regulators to predict the risk of sepsis in patients. In addition, a consensus clustering algorithm was used to identify two different subtypes of m6A, which helped us distinguish different levels of immune cell infiltration and inflammation in patients with sepsis. Comprehensive analysis of m6A regulators in sepsis revealed their potential roles in sepsis occurrence, immune cell infiltration and inflammation in patients with sepsis. This study may contribute to the development of follow-up treatment strategies for sepsis.
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Affiliation(s)
- Fenghui Li
- Intensive Care Unit, Affiliated Guangdong Hospital of Integrated Traditional Chinese and Western Medicine of Guangzhou University of Chinese Medicine, Foshan, 528000, Guangdong Province, China
| | - Yuan Zhang
- Intensive Care Unit, Affiliated Guangdong Hospital of Integrated Traditional Chinese and Western Medicine of Guangzhou University of Chinese Medicine, Foshan, 528000, Guangdong Province, China
| | - Zhiyun Peng
- Intensive Care Unit, Affiliated Guangdong Hospital of Integrated Traditional Chinese and Western Medicine of Guangzhou University of Chinese Medicine, Foshan, 528000, Guangdong Province, China
| | - Yingjing Wang
- Intensive Care Unit, Affiliated Guangdong Hospital of Integrated Traditional Chinese and Western Medicine of Guangzhou University of Chinese Medicine, Foshan, 528000, Guangdong Province, China
| | - Zhaoshang Zeng
- Intensive Care Unit, Affiliated Guangdong Hospital of Integrated Traditional Chinese and Western Medicine of Guangzhou University of Chinese Medicine, Foshan, 528000, Guangdong Province, China
| | - Zhongxiang Tang
- Intensive Care Unit, Affiliated Guangdong Hospital of Integrated Traditional Chinese and Western Medicine of Guangzhou University of Chinese Medicine, Foshan, 528000, Guangdong Province, China.
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The Potential Role of m6A in the Regulation of TBI-Induced BGA Dysfunction. Antioxidants (Basel) 2022; 11:antiox11081521. [PMID: 36009239 PMCID: PMC9405408 DOI: 10.3390/antiox11081521] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 07/31/2022] [Accepted: 08/02/2022] [Indexed: 02/01/2023] Open
Abstract
The brain–gut axis (BGA) is an important bidirectional communication pathway for the development, progress and interaction of many diseases between the brain and gut, but the mechanisms remain unclear, especially the post-transcriptional regulation of BGA after traumatic brain injury (TBI). RNA methylation is one of the most important modifications in post-transcriptional regulation. N6-methyladenosine (m6A), as the most abundant post-transcriptional modification of mRNA in eukaryotes, has recently been identified and characterized in both the brain and gut. The purpose of this review is to describe the pathophysiological changes in BGA after TBI, and then investigate the post-transcriptional bidirectional regulation mechanisms of TBI-induced BGA dysfunction. Here, we mainly focus on the characteristics of m6A RNA methylation in the post-TBI BGA, highlight the possible regulatory mechanisms of m6A modification in TBI-induced BGA dysfunction, and finally discuss the outcome of considering m6A as a therapeutic target to improve the recovery of the brain and gut dysfunction caused by TBI.
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