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Huang Q, Wei M, Feng X, Luo Y, Liu Y, Xia J. Hemorrhagic transformation in patients with large-artery atherosclerotic stroke is associated with the gut microbiota and lipopolysaccharide. Neural Regen Res 2024; 19:1532-1540. [PMID: 38051896 PMCID: PMC10883505 DOI: 10.4103/1673-5374.385846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 08/23/2023] [Indexed: 12/07/2023] Open
Abstract
Abstract
JOURNAL/nrgr/04.03/01300535-202407000-00032/figure1/v/2023-11-20T171125Z/r/image-tiff
Hemorrhagic transformation is a major complication of large-artery atherosclerotic stroke (a major ischemic stroke subtype) that worsens outcomes and increases mortality. Disruption of the gut microbiota is an important feature of stroke, and some specific bacteria and bacterial metabolites may contribute to hemorrhagic transformation pathogenesis. We aimed to investigate the relationship between the gut microbiota and hemorrhagic transformation in large-artery atherosclerotic stroke. An observational retrospective study was conducted. From May 2020 to September 2021, blood and fecal samples were obtained upon admission from 32 patients with first-ever acute ischemic stroke and not undergoing intravenous thrombolysis or endovascular thrombectomy, as well as 16 healthy controls. Patients with stroke who developed hemorrhagic transformation (n = 15) were compared to those who did not develop hemorrhagic transformation (n = 17) and with healthy controls. The gut microbiota was assessed through 16S ribosomal ribonucleic acid sequencing. We also examined key components of the lipopolysaccharide pathway: lipopolysaccharide, lipopolysaccharide-binding protein, and soluble CD14. We observed that bacterial diversity was decreased in both the hemorrhagic transformation and non-hemorrhagic transformation group compared with the healthy controls. The patients with ischemic stroke who developed hemorrhagic transformation exhibited altered gut microbiota composition, in particular an increase in the relative abundance and diversity of members belonging to the Enterobacteriaceae family. Plasma lipopolysaccharide and lipopolysaccharide-binding protein levels were higher in the hemorrhagic transformation group compared with the non-hemorrhagic transformation group. lipopolysaccharide, lipopolysaccharide-binding protein, and soluble CD14 concentrations were associated with increased abundance of Enterobacteriaceae. Next, the role of the gut microbiota in hemorrhagic transformation was evaluated using an experimental stroke rat model. In this model, transplantation of the gut microbiota from hemorrhagic transformation rats into the recipient rats triggered higher plasma levels of lipopolysaccharide, lipopolysaccharide-binding protein, and soluble CD14. Taken together, our findings demonstrate a noticeable change in the gut microbiota and lipopolysaccharide-related inflammatory response in stroke patients with hemorrhagic transformation. This suggests that maintaining a balanced gut microbiota may be an important factor in preventing hemorrhagic transformation after stroke.
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Affiliation(s)
- Qin Huang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
- Department of Neurology, Peking University People's Hospital, Beijing, China
| | - Minping Wei
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Xianjing Feng
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Yunfang Luo
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Yunhai Liu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
| | - Jian Xia
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
- Clinical Research Center for Cerebrovascular Disease of Hunan Province, Central South University, Changsha, Hunan Province, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan Province, China
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Qiu Y, Song B, Xie M, Tao Y, Yin Z, Wang M, Ma C, Chen Z, Wang Z. Causal links between gut microbiomes, cytokines and risk of different subtypes of epilepsy: a Mendelian randomization study. Front Neurosci 2024; 18:1397430. [PMID: 38855442 PMCID: PMC11157073 DOI: 10.3389/fnins.2024.1397430] [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: 03/07/2024] [Accepted: 05/13/2024] [Indexed: 06/11/2024] Open
Abstract
Objective Recent research suggests a potential link between the gut microbiome (GM) and epilepsy. We undertook a Mendelian randomization (MR) study to determine the possible causal influence of GM on epilepsy and its various subtypes, and explore whether cytokines act as mediators. Methods We utilized Genome-Wide Association Study (GWAS) summary statistics to examine the causal relationships between GM, cytokines, and four epilepsy subtypes. Furthermore, we assessed whether cytokines mediate the relationship between GM and epilepsy. Significant GMs were further investigated using transcriptomic MR analysis with genes mapped from the FUMA GWAS. Sensitivity analyses and reverse MR were conducted for validation, and false discovery rate (FDR) correction was applied for multiple comparisons. Results We pinpointed causal relationships between 30 GMs and various epilepsy subtypes. Notably, the Family Veillonellaceae (OR:1.03, 95%CI:1.02-1.05, p = 0.0003) consistently showed a strong positive association with child absence epilepsy, and this causal association endured even after FDR correction (p-FDR < 0.05). Seven cytokines were significantly associated with epilepsy and its subtypes. A mediating role for cytokines has not been demonstrated. Sensitivity tests validated the primary MR analysis outcomes. Additionally, no reverse causality was detected between significant GMs and epilepsy. Of the mapped genes of notable GMs, genes like BLK, FDFT1, DOK2, FAM167A, ZSCAN9, RNGTT, RBM47, DNAJC21, SUMF1, TCF20, GLO1, TMTC1, VAV2, and RNF14 exhibited a profound correlation with the risk factors of epilepsy subtypes. Conclusion Our research validates the causal role of GMs and cytokines in various epilepsy subtypes, and there has been no evidence that cytokines play a mediating role between GM and epilepsy. This could provide fresh perspectives for the prevention and treatment of epilepsy.
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Affiliation(s)
- Youjia Qiu
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Bingyi Song
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Minjia Xie
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Yuchen Tao
- Suzhou Medical College of Soochow University, Suzhou, China
| | - Ziqian Yin
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Menghan Wang
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Chao Ma
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Zhouqing Chen
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Zhong Wang
- Department of Neurosurgery, The First Affiliated Hospital of Soochow University, Suzhou, China
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Nie G, Zhang H, Xie D, Yan J, Li X. Liver cirrhosis and complications from the perspective of dysbiosis. Front Med (Lausanne) 2024; 10:1320015. [PMID: 38293307 PMCID: PMC10824916 DOI: 10.3389/fmed.2023.1320015] [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: 10/11/2023] [Accepted: 12/26/2023] [Indexed: 02/01/2024] Open
Abstract
The gut-liver axis refers to the intimate relationship and rigorous interaction between the gut and the liver. The intestinal barrier's integrity is critical for maintaining liver homeostasis. The liver operates as a second firewall in this interaction, limiting the movement of potentially dangerous compounds from the gut and, as a result, contributing in barrier management. An increasing amount of evidence shows that increased intestinal permeability and subsequent bacterial translocation play a role in liver damage development. The major pathogenic causes in cirrhotic individuals include poor intestinal permeability, nutrition, and intestinal flora dysbiosis. Portal hypertension promotes intestinal permeability and bacterial translocation in advanced liver disease, increasing liver damage. Bacterial dysbiosis is closely related to the development of cirrhosis and its related complications. This article describes the potential mechanisms of dysbiosis in liver cirrhosis and related complications, such as spontaneous bacterial peritonitis, hepatorenal syndrome, portal vein thrombosis, hepatic encephalopathy, and hepatocellular carcinoma, using dysbiosis of the intestinal flora as an entry point.
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Affiliation(s)
- Guole Nie
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China
| | - Honglong Zhang
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China
| | - Danna Xie
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China
| | - Jun Yan
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou, China
- Key Laboratory of Biotherapy and Regenerative Medicine of Gansu Province, Lanzhou, China
- Cancer Prevention and Control Center of Lanzhou University Medical School, Lanzhou, China
- Gansu Institute of Hepatobiliary and Pancreatic Surgery, Lanzhou, China
- Gansu Clinical Medical Research Center of General Surgery, Lanzhou, China
| | - Xun Li
- The First School of Clinical Medicine, Lanzhou University, Lanzhou, China
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou, China
- Key Laboratory of Biotherapy and Regenerative Medicine of Gansu Province, Lanzhou, China
- Cancer Prevention and Control Center of Lanzhou University Medical School, Lanzhou, China
- Gansu Institute of Hepatobiliary and Pancreatic Surgery, Lanzhou, China
- Gansu Clinical Medical Research Center of General Surgery, Lanzhou, China
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Zhang Z, Zuo L, Song X, Wang L, Zhang Y, Cheng Y, Huang J, Zhao T, Yang Z, Zhang H, Li J, Zhang X, Geng Z, Wang Y, Ge S, Hu J. Arjunolic acid protects the intestinal epithelial barrier, ameliorating Crohn's disease-like colitis by restoring gut microbiota composition and inactivating TLR4 signalling. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 123:155223. [PMID: 38134862 DOI: 10.1016/j.phymed.2023.155223] [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: 02/17/2023] [Revised: 09/15/2023] [Accepted: 11/14/2023] [Indexed: 12/24/2023]
Abstract
BACKGROUND AND AIMS Crohn's disease (CD) is characterized by an overabundance of epithelial cell death and an imbalance in microflora, both of which contribute to the dysfunction of the intestinal barrier. Arjunolic acid (AA) has anti-apoptotic effects and regulates microbiota efficacy. The objective of this study was to assess the impact of the treatment on colitis resembling Crohn's disease, along with exploring the potential underlying mechanism. METHODS CD animal models were created using Il-10-/- mice, and the impact of AA on colitis in mice was evaluated through disease activity index, weight fluctuations, pathological examination, and assessment of intestinal barrier function. To clarify the direct role of AA on intestinal epithelial cell apoptosis, organoids were induced by LPS, and TUNEL staining was performed. To investigate the potential mechanisms of AA in protecting the intestinal barrier, various methods including bioinformatics analysis and FMT experiments were employed. RESULTS The treatment for AA enhanced the condition of colitis and the function of the intestinal barrier in Il-10-/- mice. This was demonstrated by the amelioration of weight loss, reduction in tissue inflammation score, and improvement in intestinal permeability. Moreover, AA suppressed the apoptosis of intestinal epithelial cells in Il-10-/- mice and LPS-induced colon organoids, while also reducing the levels of Bax and C-caspase-3. In terms of mechanism, AA suppressed the activation of TLR4 signaling in Il-10-/- mice and colon organoids induced by LPS. In addition, AA increased the abundance of short-chain fatty acid-producing bacteria in the stool of Il-10-/- mice, and transplantation of feces from AA-treated mice improved CD-like colitis. CONCLUSIONS The results of our study demonstrate that AA has a protective effect on the intestinal barrier in Crohn's disease-like colitis by preventing apoptosis. Additionally, this groundbreaking study reveals the capacity of AA to hinder TLR4 signaling and alter the makeup of the intestinal microbiome. The findings present fresh possibilities for treating individuals diagnosed with Crohn's disease. AA offers a hopeful novel strategy for managing Crohn's disease by obstructing crucial pathways implicated in intestinal inflammation and enhancing the gut microbiota.
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Affiliation(s)
- Zining Zhang
- Inflammatory Bowel Disease Research Center, First Affiliated Hospital of Bengbu Medical College, Bengbu, China; Anhui Key Laboratory of Tissue Transplantation, Bengbu Medical College, Bengbu, China
| | - Lugen Zuo
- Inflammatory Bowel Disease Research Center, First Affiliated Hospital of Bengbu Medical College, Bengbu, China; Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China; Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Anhui, China
| | - Xue Song
- Inflammatory Bowel Disease Research Center, First Affiliated Hospital of Bengbu Medical College, Bengbu, China; Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Anhui, China; Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Lian Wang
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China
| | - Yan Zhang
- Bengbu Medical College, Bengbu, Anhui, China
| | - Yang Cheng
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Ju Huang
- Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Tianhao Zhao
- Department of Gastroenterology, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China
| | - Zi Yang
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China
| | - Hao Zhang
- Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China
| | - Jing Li
- Inflammatory Bowel Disease Research Center, First Affiliated Hospital of Bengbu Medical College, Bengbu, China; Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Anhui, China; Department of Clinical Laboratory, First Affiliated Hospital of Bengbu, Medical College, Bengbu, China
| | - Xiaofeng Zhang
- Inflammatory Bowel Disease Research Center, First Affiliated Hospital of Bengbu Medical College, Bengbu, China; Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Anhui, China; Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Zhijun Geng
- Inflammatory Bowel Disease Research Center, First Affiliated Hospital of Bengbu Medical College, Bengbu, China; Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Anhui, China; Department of Central Laboratory, First Affiliated Hospital of Bengbu Medical College, Bengbu, China
| | - Yueyue Wang
- Inflammatory Bowel Disease Research Center, First Affiliated Hospital of Bengbu Medical College, Bengbu, China; Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Anhui, China; Department of Clinical Laboratory, First Affiliated Hospital of Bengbu, Medical College, Bengbu, China
| | - Sitang Ge
- Inflammatory Bowel Disease Research Center, First Affiliated Hospital of Bengbu Medical College, Bengbu, China; Department of Gastrointestinal Surgery, First Affiliated Hospital of Bengbu Medical College, Bengbu, Anhui, China; Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Anhui, China
| | - Jianguo Hu
- Inflammatory Bowel Disease Research Center, First Affiliated Hospital of Bengbu Medical College, Bengbu, China; Anhui Province Key Laboratory of Basic and Translational Research of Inflammation-related Diseases, Anhui, China; Department of Clinical Laboratory, First Affiliated Hospital of Bengbu, Medical College, Bengbu, China.
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Ma C, Zhang Y, Jiang S, Teng F, Huang S, Zhang J. Cross-cohort single-nucleotide-variant profiling of gut microbiota suggests a novel gut-health assessment approach. mSystems 2023; 8:e0082823. [PMID: 37905808 PMCID: PMC10734426 DOI: 10.1128/msystems.00828-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 09/21/2023] [Indexed: 11/02/2023] Open
Abstract
IMPORTANCE Most studies focused much on the change in abundance and often failed to explain the microbiome variation related to disease conditions, Herein, we argue that microbial genetic changes can precede the ecological changes associated with the host physiological changes and, thus, would offer a new information layer from metagenomic data for predictive modeling of diseases. Interestingly, we preliminarily found a few genetic biomarkers on SCFA production can cover most chronic diseases involved in the meta-analysis. In the future, it is of both scientific and clinical significance to further explore the dynamic interactions between adaptive evolution and ecology of gut microbiota associated with host health status.
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Affiliation(s)
- Chenchen Ma
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou, China
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Yufeng Zhang
- Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China
| | - Shuaiming Jiang
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou, China
| | - Fei Teng
- Qingdao Stomatological Hospital Affiliated to Qingdao University, Qingdao, China
| | - Shi Huang
- Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China
| | - Jiachao Zhang
- Key Laboratory of Food Nutrition and Functional Food of Hainan Province, School of Food Science and Engineering, Hainan University, Haikou, China
- One Health Institute, Hainan University, Haikou, Hainan, China
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Mehmood Qadri H, Dar SA, Bashir RA, Khan M, Ali S, Zahid AS, Ali A, Marriam, Waheed S, Saeed M. Gastrointestinal Dysbiosis in Neuro-Critically Ill Patients: A Systematic Review of Case-Control Studies. Cureus 2023; 15:e50923. [PMID: 38259358 PMCID: PMC10803107 DOI: 10.7759/cureus.50923] [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] [Accepted: 12/21/2023] [Indexed: 01/24/2024] Open
Abstract
The human gastrointestinal tract (GIT) has a rich and pre-programmed microbiome. This microbiome is essential for physiological functions such as digestion, immunity, metabolism, and structural integrity, and of prime concern to us in conducting this study is the nervous system communication. This two-way communication between the GIT and central nervous system (CNS) is known as the gut-brain axis (GBA) and has implications for neurocritical disease. A change in any factor relating to this microbiome is known as gut dysbiosis; this can lead to aberrant communication through the GBA and in turn, can contribute to disease states. The primary objective of this study is to determine the cause-specific dysbiotic organisms in neuro-critically ill patients and their effects. We performed this study by searching published literature as per Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Studies that defined gastrointestinal dysbiosis in neuro-critically ill patients were retrieved using Boolean search from 2000 to 2023 via PubMed and Google Scholar and narrowed the results down to five prospective case-control studies. We performed their quality assessment. The results concluded that in neurocritical illnesses such as encephalitis, brain tumors, intracerebral hemorrhage, and ischemic stroke, fluctuations in specific microbiota correlated with disease severity and prognosis. Moreover, the inhabiting population of dysbiotic organisms in neuro-critically ill patients were different in different diseases and there were no similarities in the composition of gut microbiota in these diseases. Taking stroke patients as an example; increased Enterobacteriaceae and lower Lachnospiraceae microbiome levels were found in patients with a higher stroke dysbiosis index (SDI). Those patients who developed stroke-associated pneumonia (SAP) displayed higher levels of Enterococcus species. In conclusion, dysbiosis has a major effect on neuro-critically ill patients' disease states and dysbiotic organisms can be used as a biomarker for disease. Further prospective studies on this topic are warranted for potential neurological and prognostic correlations.
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Affiliation(s)
| | | | - Raahim A Bashir
- Neurological Surgery, CMH Lahore Medical College and Institute of Dentistry, Lahore, PAK
| | - Manal Khan
- Neurosurgery, Unit-I, Punjab Institute of Neurosciences, Lahore, PAK
| | - Salamat Ali
- Surgery, Nawaz Shareef Medical College, Gujrat, PAK
| | | | - Asim Ali
- General Surgery, Lahore General Hospital, Lahore, PAK
| | - Marriam
- Surgery, Independent Medical College, Faisalabad, PAK
| | - Saba Waheed
- Emergency Medicine, Akhtar Saeed Medical and Dental College, Lahore, PAK
| | - Maha Saeed
- Internal Medicine, Akhtar Saeed Medical and Dental College, Lahore, PAK
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K VK, Bhat RG, Rao BK, R AP. The Gut Microbiota: a Novel Player in the Pathogenesis of Uterine Fibroids. Reprod Sci 2023; 30:3443-3455. [PMID: 37418220 PMCID: PMC10691976 DOI: 10.1007/s43032-023-01289-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 06/25/2023] [Indexed: 07/08/2023]
Abstract
Uterine fibroid is a common gynecological disorder that affects women of reproductive age and has emerged as a major public health concern. The symptoms have a negative influence on both their physical health and quality of life. The cost of treatment has a significant impact on the disease's burden. Even though its origin is uncertain, estrogen is thought to be a key player in fibroid pathophysiology. Many theories, including those based on genetic and environmental factors, explain what causes hyper-estrogenic condition in fibroid patients. One such possibility that is currently being explored is the hypothesis that an altered gut microbiome can contribute to the development of diseases characterized by estrogen dominance. Gut dysbiosis is often a "hot area" in the health sciences. According to a recent study, uterine fibroid patients have altered gut microbiome. A variety of risk factors influence both fibroid development and gut homeostasis. Diet, lifestyle, physical activity, and environmental contaminants have an impact on estrogen and the gut flora. A better understanding of uterine fibroids' pathophysiology is required to develop effective preventative and treatment options. A few ways by which the gut microbiota contributes to UF include estrogen, impaired immune function, inflammation, and altered gut metabolites. Therefore, in the future, while treating fibroid patients, various strategies to deal with changes in the gut flora may be advantageous. For developing suggestions for clinical diagnosis and therapy, we reviewed the literature on the relationship between uterine fibroids and the gut microbiota.
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Affiliation(s)
- Vineetha K K
- Department of Obstetrics and Gynecology, Melaka Manipal Medical College, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Rajeshwari G Bhat
- Department of Obstetrics and Gynecology, Melaka Manipal Medical College, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Bhamini Krishna Rao
- Department of Physiotherapy, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Archana P R
- Department of Basic Medical Sciences, Manipal Academy of Higher Education, Manipal, Karnataka, India.
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Ji X, Yang Q, Zhu XL, Xu L, Guo JY, Rong Y, Cai YL. Association between gut microbiota and endometriosis: a two-sample Mendelian randomization study. Front Microbiol 2023; 14:1188458. [PMID: 37829443 PMCID: PMC10565803 DOI: 10.3389/fmicb.2023.1188458] [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: 03/17/2023] [Accepted: 09/08/2023] [Indexed: 10/14/2023] Open
Abstract
Background Recent studies have shown that an imbalance in gut microbiota (GM) may not always be associated with endometriosis (EMS). To investigate this further, we conducted a two-sample Mendelian randomization study. Methods MR analysis was performed on genome-wide association study (GWAS) summary statistics of GM and EMS. Specifically, the MiBioGen microbiota GWAS (N = 18,340) was used as exposure. The FinnGen study GWAS (8,288 EMS cases and 68,969 controls) was used as outcome. We primarily used the inverse variance weighted (IVW) method to analyze the correlation and conducted a sensitivity analysis to verify its reliability. Results (1) MR analysis: The results of the IVW method confirmed that a total of 8 GM taxa were related to the risk of EMS. Class-Melainabacteria (p = 0.036), family-Ruminococcaceae (p = 0.037), and genus-Eubacteriumruminantium (p = 0.015) had a protective effect on EMS, whereas order-Bacillales (p = 0.046), family-Prevotellaceae (p = 0.027), genus-Anaerotruncus (p = 0.025), genus-Olsenella (p = 0.036) and genus-RuminococcaceaeUCG002 (p = 0.035) could increase the risk of EMS. (2) Sensitivity analysis: Cochrane's Q test (p > 0.05), MR-Egger intercept method (p > 0.05), and leave-one-out method confirmed the robustness of MR results. Conclusion This study performed a MR analysis on two large national databases and identified the association between 8 GM taxa and EMS. These taxa could potentially be utilized for indirectly diagnosing EMS and could lead to novel perspectives in research regarding the pathogenesis, diagnosis, and treatment of EMS.
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Affiliation(s)
- Xuan Ji
- Medical School of Southeast University, Nanjing, Jiangsu Province, China
| | - Qi Yang
- Medical School of Southeast University, Nanjing, Jiangsu Province, China
| | - Xiu-Lin Zhu
- Department of Obstetrics and Gynecology, Shanghai General Hospital, Shanghai, China
| | - Li Xu
- Medical School of Southeast University, Nanjing, Jiangsu Province, China
| | - Jie-Ying Guo
- Medical School of Southeast University, Nanjing, Jiangsu Province, China
| | - Yan Rong
- Medical School of Southeast University, Nanjing, Jiangsu Province, China
| | - Yun-Lang Cai
- Department of Obstetrics and Gynecology, Zhongda Hospital, Medical School of Southeast University, Nanjing, Jiangsu Province, China
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Garvey M. The Association between Dysbiosis and Neurological Conditions Often Manifesting with Chronic Pain. Biomedicines 2023; 11:biomedicines11030748. [PMID: 36979726 PMCID: PMC10045203 DOI: 10.3390/biomedicines11030748] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 02/21/2023] [Accepted: 02/26/2023] [Indexed: 03/06/2023] Open
Abstract
The prevalence of neurological conditions which manifest with chronic pain is increasing globally, where the World Health Organisation has now classified chronic pain as a risk factor for death by suicide. While many chronic pain conditions have a definitive underlying aetiology, non-somatic conditions represent difficult-to-diagnose and difficult-to-treat public health issues. The interaction of the immune system and nervous system has become an important area in understanding the occurrence of neuroinflammation, nociception, peripheral and central sensitisation seen in chronic pain. More recently, however, the role of the resident microbial species in the human gastrointestinal tract has become evident. Dysbiosis, an alteration in the microbial species present in favour of non-beneficial and pathogenic species has emerged as important in many chronic pain conditions, including functional somatic syndromes, autoimmune disease and neurological diseases. In particular, a decreased abundance of small chain fatty acid, e.g., butyrate-producing bacteria, including Faecalibacterium, Firmicutes and some Bacteroides spp., is frequently evident in morbidities associated with long-term pain. Microbes involved in the production of neurotransmitters serotonin, GABA, glutamate and dopamine, which mediate the gut-brain, axis are also important. This review outlines the dysbiosis present in many disease states manifesting with chronic pain, where an overlap in morbidities is also frequently present in patients.
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Affiliation(s)
- Mary Garvey
- Department of Life Science, Atlantic Technological University, F91 YW50 Sligo, Ireland; ; Tel.: +353-071-9305529
- Centre for Precision Engineering, Materials and Manufacturing Research (PEM), Atlantic Technological University, F91 YW50 Sligo, Ireland
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10
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Changes to Gut Microbiota Following Systemic Antibiotic Administration in Infants. Antibiotics (Basel) 2022; 11:antibiotics11040470. [PMID: 35453221 PMCID: PMC9025670 DOI: 10.3390/antibiotics11040470] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 03/25/2022] [Accepted: 03/28/2022] [Indexed: 02/01/2023] Open
Abstract
Long-term antibiotic use can have consequences on systemic diseases, such as obesity, allergy, and depression, implicating the causal role of gut microbiome imbalance. However, the evaluation of the effect of antibiotics in early infancy on alterations to the gut microbiome remains poorly understood. This study aimed to evaluate the gut microbiome state in infancy following systemic antibiotic treatment. Twenty infants under 3 months of age who had received antibiotics for at least 3 days were enrolled, and their fecal samples were collected 4 weeks after antibiotic administration finished. Thirty-four age-matched healthy controls without prior exposure to antibiotics were also assessed. The relative bacterial abundance in feces was obtained via sequencing of 16 S rRNA genes, and alpha and beta diversities were evaluated. At the genus level, the relative abundance of Escherichia/Shigella and Bifidobacterium increased (p = 0.03 and p = 0.017, respectively) but that of Bacteroides decreased (p = 0.02) in the antibiotic treatment group. The microbiome of the antibiotic treatment group exhibited an alpha diversity lower than that of the control group. Thus, systemic antibiotic administration in early infancy affects the gut microbiome composition even after a month has passed; long-term studies are needed to further evaluate this.
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Liu XC, Sun Q, Ji YC, Fu LZ, Wang ZL, He Y, Li LQ. Differences in the Gut Microbiota Composition and Metabolites Associated With Feeding Intolerance in VLBW Infants With a Gestational Age of ≤ 30 Weeks: A Pilot Study. Front Cell Infect Microbiol 2022; 12:726322. [PMID: 35252022 PMCID: PMC8891543 DOI: 10.3389/fcimb.2022.726322] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 01/27/2022] [Indexed: 12/12/2022] Open
Abstract
Objective To explore the main variations in gut microbiota compositions, short-chain fatty acids (SCFAs) concentrations and autoinducer-2 (AI-2) levels in very-low-birth-weight (VLBW) infants with feeding intolerance (FI). Methods Twenty-seven VLBW infants with gestational ages of ≤30 weeks were divided into the FI group (n=14) and feeding tolerance (FT) group (n=13). The gut microbiota composition and SCFAs concentrations and AI-2 levels in feces were detected at 2 and 4 weeks after birth. Results There was no difference in alpha diversity between the two groups at 2 and 4 weeks after birth (P>0.05). Although the Chao index decreased (P<0.05), there was no difference in the Shannon index from 2 weeks to 4 weeks in either the FI or FT group (P>0.05). Additionally, there was no difference in beta diversity between the FI and FT groups at 2 weeks (P>0.05), but there was a significant difference in beta diversity between the two groups at 4 weeks (P<0.05) and a large difference from 2 weeks to 4 weeks in both the FI and FT groups (P<0.05). Furthermore, the composition of the microbiota at 4 weeks was significantly different from that at 2 weeks in the FI group (P<0.05). The Veillonella abundance was lower at 4 weeks in the FI group (P<0.05), but there were no differences in the compositions of the other main microbes between the two groups (P>0.05). Proteobacteria and Firmicutes were dominant in both the FI and FT groups. The concentrations of propanoic, valeric and hexanoic acids were lower in the FI group at 2 weeks, and the levels of isobutyric and valeric acids were lower at 4 weeks after birth (P<0.05). The areas under the curves (AUCs) of propanoic, butanoic and valeric acids in predicting FI were 0.878, 0.816 and 0.744, respectively. Compared with that in the FT group, the relative bioluminescence of AI-2 was lower in the FI group at 2 weeks (P<0.05), and the AUC was 0.736. Conclusions The main composition of the microbiota was not obviously different in infants with FI. Some SCFAs and AI-2 have moderate value in predicting FI.
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Affiliation(s)
- Xiao-Chen Liu
- Neonatal Diagnosis and Treatment Centre of Children’s Hospital of Chongqing Medical University, Chongqing, China
- National Clinical Research Center for Child Health and Disorders, Chongqing, China
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
- China International Science and Technology Cooperation base of Child Development and Critical Disorders, Chongqing, China
- Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - Qian Sun
- Neonatal Diagnosis and Treatment Centre of Children’s Hospital of Chongqing Medical University, Chongqing, China
- National Clinical Research Center for Child Health and Disorders, Chongqing, China
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
- China International Science and Technology Cooperation base of Child Development and Critical Disorders, Chongqing, China
- Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - Yan-Chun Ji
- Neonatal Diagnosis and Treatment Centre of Children’s Hospital of Chongqing Medical University, Chongqing, China
- National Clinical Research Center for Child Health and Disorders, Chongqing, China
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
- China International Science and Technology Cooperation base of Child Development and Critical Disorders, Chongqing, China
- Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - Li-Zhen Fu
- Neonatal Diagnosis and Treatment Centre of Children’s Hospital of Chongqing Medical University, Chongqing, China
- National Clinical Research Center for Child Health and Disorders, Chongqing, China
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
- China International Science and Technology Cooperation base of Child Development and Critical Disorders, Chongqing, China
- Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - Zheng-Li Wang
- Neonatal Diagnosis and Treatment Centre of Children’s Hospital of Chongqing Medical University, Chongqing, China
- National Clinical Research Center for Child Health and Disorders, Chongqing, China
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
- China International Science and Technology Cooperation base of Child Development and Critical Disorders, Chongqing, China
- Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - Yu He
- Neonatal Diagnosis and Treatment Centre of Children’s Hospital of Chongqing Medical University, Chongqing, China
- National Clinical Research Center for Child Health and Disorders, Chongqing, China
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
- China International Science and Technology Cooperation base of Child Development and Critical Disorders, Chongqing, China
- Chongqing Key Laboratory of Pediatrics, Chongqing, China
| | - Lu-Quan Li
- Neonatal Diagnosis and Treatment Centre of Children’s Hospital of Chongqing Medical University, Chongqing, China
- National Clinical Research Center for Child Health and Disorders, Chongqing, China
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
- China International Science and Technology Cooperation base of Child Development and Critical Disorders, Chongqing, China
- Chongqing Key Laboratory of Pediatrics, Chongqing, China
- *Correspondence: Lu-Quan Li,
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12
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Gong X, Liu Y, Liu X, Li A, Guo K, Zhou D, Hong Z. Disturbance of Gut Bacteria and Metabolites Are Associated with Disease Severity and Predict Outcome of NMDAR Encephalitis: A Prospective Case-Control Study. Front Immunol 2022; 12:791780. [PMID: 35046950 PMCID: PMC8761854 DOI: 10.3389/fimmu.2021.791780] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Accepted: 12/02/2021] [Indexed: 02/05/2023] Open
Abstract
Objective We aimed to investigate the associations between the intestinal microbiota, metabolites, cytokines, and clinical severity in anti-N-methyl-d-aspartate receptor (NMDAR) encephalitis and to further determine the predictive value of the intestinal microbiota or metabolites in clinical prognosis. Methods In this prospective observational cohort study of 58 NMDAR encephalitis patients and 49 healthy controls, fecal microbiota, metabolites, and cytokines were quantified and characterized by16S rRNA gene sequencing, liquid chromatography–mass spectrometry, and the Luminex assay, respectively. Results There were marked variations in the gut microbiota composition and metabolites in critically ill patients. We identified 8 metabolite modules (mainly characterized by fatty acid, glycerophosphoethanolamines, and glycerophosphocholines) that were distinctly classified as negatively or positively associated with bacterial co-abundance groups (CAGs). These CAGs were mainly composed of Bacteroides, Eubacterium_hallii_group, Anaerostipes, Ruminococcus, Butyricicoccus, and Faecalibacterium, which were substantially altered in patients. In addition, these fecal and serum metabolic modules were further correlated with the serum cytokines. Additionally, the combination of clinical features, microbial marker (Granulicatella), and a panel of metabolic markers could further enhance the performance of prognosis discrimination significantly, which yielded an area under the receiver operating characteristic curve of (AUC) of 0.94 (95%CI = 0.7–0.9). Patients with low bacterial diversity are more likely to develop relapse than those with higher bacterial diversity (log-rank p = 0.04, HR = 2.7, 95%CI = 1.0–7.0). Interpretation The associations between the multi-omics data suggested that certain bacteria might affect the pathogenesis of NMDAR encephalitis by modulating the metabolic pathways of the host and affecting the production of pro-inflammatory cytokines. Furthermore, the disturbance of fecal bacteria may predict the long-term outcome and relapse in NMDAR encephalitis.
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Affiliation(s)
- Xue Gong
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, China.,Institute of Brain Science and Brain-Inspired Technology of West China Hospital, Sichuan University, Chengdu, China.,Department of Neurology, Chengdu Shangjin Nanfu Hospital, Chengdu, China
| | - Yue Liu
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, China.,Institute of Brain Science and Brain-Inspired Technology of West China Hospital, Sichuan University, Chengdu, China.,Department of Neurology, Chengdu Shangjin Nanfu Hospital, Chengdu, China
| | - Xu Liu
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, China.,Institute of Brain Science and Brain-Inspired Technology of West China Hospital, Sichuan University, Chengdu, China.,Department of Neurology, Chengdu Shangjin Nanfu Hospital, Chengdu, China
| | - Aiqing Li
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, China.,Institute of Brain Science and Brain-Inspired Technology of West China Hospital, Sichuan University, Chengdu, China.,Department of Neurology, Chengdu Shangjin Nanfu Hospital, Chengdu, China
| | - Kundian Guo
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, China.,Institute of Brain Science and Brain-Inspired Technology of West China Hospital, Sichuan University, Chengdu, China.,Department of Neurology, Chengdu Shangjin Nanfu Hospital, Chengdu, China
| | - Dong Zhou
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, China.,Institute of Brain Science and Brain-Inspired Technology of West China Hospital, Sichuan University, Chengdu, China
| | - Zhen Hong
- Department of Neurology, West China Hospital, Sichuan University, Chengdu, China.,Institute of Brain Science and Brain-Inspired Technology of West China Hospital, Sichuan University, Chengdu, China.,Department of Neurology, Chengdu Shangjin Nanfu Hospital, Chengdu, China
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13
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Zhuang YP, Zhang YT, Zhang RX, Zhong HJ, He XX. The Gut-Liver Axis in Nonalcoholic Fatty Liver Disease: Association of Intestinal Permeability with Disease Severity and Treatment Outcomes. Int J Clin Pract 2022; 2022:4797453. [PMID: 35685554 PMCID: PMC9159210 DOI: 10.1155/2022/4797453] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2021] [Accepted: 01/05/2022] [Indexed: 02/08/2023] Open
Abstract
OBJECTIVE To investigate the association between intestinal permeability and severity of nonalcoholic fatty liver disease (NAFLD) and the value of intestinal permeability in predicting the efficacy of metabolic therapy for NAFLD. METHODS Disease severity was compared between patients with normal and elevated intestinal permeability; correlations between D-lactate and different NAFLD parameters were analyzed; and the effects of metabolic therapy on NAFLD patients with normal and elevated intestinal permeability were evaluated. RESULTS A total of 190 patients with NAFLD were enrolled. NAFLD patients with elevated intestinal permeability had significantly higher levels of liver test parameters, liver ultrasonographic fat attenuation parameter, triglyceride, homeostasis model assessment of insulin resistance value, and diamine oxidase (all P˂0.05) than NAFLD patients with normal intestinal permeability. Furthermore, serum D-lactate levels were positively correlated with alanine transaminase, aspartate transaminase, gamma-glutamyl transpeptidase, total bilirubin, indirect bilirubin, fat attenuation parameter, triglyceride, and diamine oxidase (all P ˂ 0.05). Moreover, NAFLD patients with elevated intestinal permeability showed less improvement in TG levels (P = 0.014) after metabolic therapy. CONCLUSION Intestinal permeability correlates with the disease severity in patients with NAFLD. Moreover, intestinal permeability may have value for predicting the efficacy of metabolic therapy for NAFLD patients.
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Affiliation(s)
- Yu-Pei Zhuang
- Department of Gastroenterology, The First Affiliated Hospital of Guangdong Pharmaceutical University, Research Center for Engineering Techniques of Microbiota-Targeted Therapies of Guangdong Province, Guangzhou, China
| | - Yi-Ting Zhang
- Department of Gastroenterology, The First Affiliated Hospital of Guangdong Pharmaceutical University, Research Center for Engineering Techniques of Microbiota-Targeted Therapies of Guangdong Province, Guangzhou, China
| | - Ruo-Xin Zhang
- Department of Gastroenterology, The First Affiliated Hospital of Guangdong Pharmaceutical University, Research Center for Engineering Techniques of Microbiota-Targeted Therapies of Guangdong Province, Guangzhou, China
| | - Hao-Jie Zhong
- Department of Gastroenterology, The First Affiliated Hospital of Guangdong Pharmaceutical University, Research Center for Engineering Techniques of Microbiota-Targeted Therapies of Guangdong Province, Guangzhou, China
- South China University of Technology, Guangzhou, China
| | - Xing-Xiang He
- Department of Gastroenterology, The First Affiliated Hospital of Guangdong Pharmaceutical University, Research Center for Engineering Techniques of Microbiota-Targeted Therapies of Guangdong Province, Guangzhou, China
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14
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Xiang K, Wang P, Xu Z, Hu YQ, He YS, Chen Y, Feng YT, Yin KJ, Huang JX, Wang J, Wu ZD, Yang XK, Wang DG, Ye DQ, Pan HF. Causal Effects of Gut Microbiome on Systemic Lupus Erythematosus: A Two-Sample Mendelian Randomization Study. Front Immunol 2021; 12:667097. [PMID: 34557183 PMCID: PMC8453215 DOI: 10.3389/fimmu.2021.667097] [Citation(s) in RCA: 90] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 08/16/2021] [Indexed: 12/19/2022] Open
Abstract
The observational association between gut microbiome and systemic lupus erythematosus (SLE) has been well documented. However, whether the association is causal remains unclear. The present study used publicly available genome-wide association study (GWAS) summary data to perform two-sample Mendelian randomization (MR), aiming to examine the causal links between gut microbiome and SLE. Two sets of MR analyses were conducted. A group of single nucleotide polymorphisms (SNPs) that less than the genome-wide statistical significance threshold (5 × 10-8) served as instrumental variables. To obtain a comprehensive conclusion, the other group where SNPs were smaller than the locus-wide significance level (1 × 10-5) were selected as instrumental variables. Based on the locus-wide significance level, the results indicated that there were causal effects of gut microbiome components on SLE risk. The inverse variance weighted (IVW) method suggested that Bacilli and Lactobacillales were positively correlated with the risk of SLE and Bacillales, Coprobacter and Lachnospira were negatively correlated with SLE risk. The results of weighted median method supported that Bacilli, Lactobacillales, and Eggerthella were risk factors for SLE and Bacillales and Coprobacter served as protective factors for SLE. The estimates of MR Egger suggested that genetically predicted Ruminiclostridium6 was negatively associated with SLE. Based on the genome-wide statistical significance threshold, the results showed that Actinobacteria might reduce the SLE risk. However, Mendelian randomization pleiotropy residual sum and outlier (MR-PRESSO) detected significant horizontal pleiotropy between the instrumental variables of Ruminiclostridium6 and outcome. This study support that there are beneficial or detrimental causal effects of gut microbiome components on SLE risk.
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Affiliation(s)
- Kun Xiang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China.,Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China
| | - Peng Wang
- Center for Genetic Epidemiology and Genomics, School of Public Health, Soochow University Medical College, Suzhou, China
| | - Zhiwei Xu
- School of Public Health, Faculty of Medicine, University of Queensland, Brisbane, QLD, Australia
| | - Yu-Qian Hu
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China.,Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China
| | - Yi-Sheng He
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China.,Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China
| | - Yue Chen
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China.,Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China
| | - Ya-Ting Feng
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China.,Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China
| | - Kang-Jia Yin
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China.,Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China
| | - Ji-Xiang Huang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China.,Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China
| | - Jie Wang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China.,Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China
| | - Zheng-Dong Wu
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China.,Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China
| | - Xiao-Ke Yang
- Department of Rheumatology and Immunology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - De-Guang Wang
- Department of Nephrology, Second Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Dong-Qing Ye
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China.,Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China
| | - Hai-Feng Pan
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, China.,Inflammation and Immune Mediated Diseases Laboratory of Anhui Province, Hefei, China
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15
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Chen L, Qing W, Yi Z, Lin G, Peng Q, Zhou F. NU9056, a KAT 5 Inhibitor, Treatment Alleviates Brain Dysfunction by Inhibiting NLRP3 Inflammasome Activation, Affecting Gut Microbiota, and Derived Metabolites in LPS-Treated Mice. Front Nutr 2021; 8:701760. [PMID: 34327209 PMCID: PMC8313765 DOI: 10.3389/fnut.2021.701760] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Accepted: 06/11/2021] [Indexed: 12/20/2022] Open
Abstract
Background: The pathogenesis of sepsis-associated encephalopathy (SAE) is complicated, while the efficacy of current treatment technologies is poor. Therefore, the discovery of related targets and the development of new drugs are essential. Methods: A mouse model of SAE was constructed by intraperitoneal injection of lipopolysaccharide (LPS). LPS treatment of microglia was used to build an in vitro model of inflammation. Nine-day survival rates, behavioral testing, transmission electron microscopy (TEM), immunohistochemical (IHC), immunofluorescence (IF), and ELISA were performed. The expression levels of Occludin, Claudin 5, NLRP3, caspase-1, and ASC genes and proteins were detected by RT-qPCR or Western blot. Caspase-1 P10 (Casp-1 P10) protein expression was detected. 16S rDNA sequencing and gas chromatography-mass spectrometer (GC-MS) were used to analyze the gut microbiota and metabolism. Flow cytometric experiment and Cell Counting Kit-8 (CCK8) assay were performed. Results: NU9056 improved the survival rate of mice and alleviated LPS-induced cognitive impairment, anxiety, and depression in vivo. The tight junctions were thickened via NU9056 treatment. Further, the mRNAs and proteins expression levels of Occludin and Claudin 5 were up-regulated by NU9056. NU9056 increased the expression level of DCX. The expression levels of Iba-1, NLRP3, IL-1β, ASC, and Casp-1 P10 were down-regulated by NU9056. The composition of the gut microbiota changed. Kyoto Encyclopedia of Genes and Genomes data predicted that the effects of NU9056 might be related to apoptosis and tight junction pathways. NU9056 up-regulated the concentration of acetate, propionate, and butyrate. NU9056 significantly reduced LPS-induced apoptosis of microglia, the average fluorescence intensity of ROS, and the release of IL-1β and IL-18, while improving cell viability in vitro. Conclusions: NU9056 might effectively alleviate LPS-induced cognitive impairment and emotional disorder in experimental mice by inhibiting the NLRP3 inflammasome. The therapeutic effects may be related to gut microbiota and derived metabolites. NU9056 might be a potential drug of SAE prevention.
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Affiliation(s)
- Lu Chen
- Department of Anesthesiology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Wenxiang Qing
- Department of Anesthesiology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Zexiong Yi
- Medical College of Xiangya, Central South University, Changsha, China
| | - Guoxin Lin
- Department of Anesthesiology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Qianyi Peng
- Department of Critical Care Medicine, Xiangya Hospital, Central South University, Changsha, China
| | - Fan Zhou
- Department of Anesthesiology, The Second Xiangya Hospital, Central South University, Changsha, China
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16
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Yasoob TB, Yu D, Khalid AR, Zhang Z, Zhu X, Saad HM, Hang S. Oral administration of Moringa oleifera leaf powder relieves oxidative stress, modulates mucosal immune response and cecal microbiota after exposure to heat stress in New Zealand White rabbits. J Anim Sci Biotechnol 2021; 12:66. [PMID: 33975652 PMCID: PMC8114525 DOI: 10.1186/s40104-021-00586-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 03/17/2021] [Indexed: 12/16/2022] Open
Abstract
Background Heat stress (HS) disrupts the gut barrier allowing the uptake of lipopolysaccharide (LPS) and leads to an inflammatory response and changes in gut microbiota composition. Moringa oleifera leaf powder (MOLP) has been proposed to combat HS, yet its alleviate role is currently under investigation. The current study investigated the effects of chronic HS and MOLP supplementation on changes in redox status and immune response of cecal mucosa along with alteration in cecal microbiota. Methods A total of 21 young New Zealand White (NZW) rabbits (male) about 32 weeks old (mean body weight of 3318 ± 171 g) reared on a commercial pelleted diet were employed; divided into three groups (n = 7): control (CON, 25 °C), heat stress (HS, 35 °C for 7 h daily), and HS supplemented orally with MOLP (HSM, 35 °C) at 200 mg/kg body weight per day for 4 weeks. Results The results demonstrated that MOLP supplementation increased organ index of cecal tissue compared with the HS group (P > 0.05). Levels of malonaldehyde (MDA) and activity of superoxide dismutase (SOD) as well as lactate dehydrogenase (LDH) were reduced in the cecal mucosa of the HSM group compared with the HS group. MOLP downregulated the contents of cecal mucosa LPS, several inflammatory markers (TNF-α/IL-1α/IL-1β), and myeloperoxidase (MPO) in the HSM group (P < 0.05). Secretory immunoglobulin A (SIgA) was increased in the HSM group compared with the HS group (P < 0.05). The transcriptome of cecal mucosa showed that MOLP reduced gene expression relative to several immune factors, including IL-10, IFNG, and RLA, whereas both HS and MOLP increased the gene expression of fat digestion and absorption pathway, including APOA1, FABP1, FABP2, MTTP, and LOC100344166, compared to the CON group (P < 0.001). At the phylum level, the relative abundance of Proteobacteria was increased by HS, while Actinobacteria was significantly increased by HSM compared to other groups (P < 0.05). At genus level, Papillibacter was higher in abundance in HSM groups compared to CON and HS groups (P < 0.05). Higher butyrate concentrations were observed in the HSM group than HS and CON groups (P < 0.05). Conclusion In conclusion, HS in growing rabbits resulted in alteration of cecal microbiota at phyla level as well as increased oxidative stress and expression of mucosal inflammatory genes. Whereas, oral MOLP supplementation elevated the relative weight of cecum, affected their immunological and cecal micro-ecosystem function by improving antioxidant status and down-regulating mucosal tissue inflammatory response. Supplementary Information The online version contains supplementary material available at 10.1186/s40104-021-00586-y.
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Affiliation(s)
- Talat Bilal Yasoob
- National Center for International Research on Animal Gut Nutrition, Nanjing Agricultural University, No.1 WeiGang, Xuanwu region, Nanjing, 210095, Jiangsu, China.,Laboratory of Gastrointestinal Microbiology, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China.,Faculty of Agricultural Sciences, Ghazi University, Dera Ghazi Khan, 32200, Pakistan
| | - Defu Yu
- National Center for International Research on Animal Gut Nutrition, Nanjing Agricultural University, No.1 WeiGang, Xuanwu region, Nanjing, 210095, Jiangsu, China.,Laboratory of Gastrointestinal Microbiology, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Abdur Rauf Khalid
- National Center for International Research on Animal Gut Nutrition, Nanjing Agricultural University, No.1 WeiGang, Xuanwu region, Nanjing, 210095, Jiangsu, China.,Laboratory of Gastrointestinal Microbiology, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China.,Department of Livestock and Poultry Production, Faculty of Veterinary Sciences, Bahauddin Zakariya University, Multan, 60000, Pakistan
| | - Zhen Zhang
- National Center for International Research on Animal Gut Nutrition, Nanjing Agricultural University, No.1 WeiGang, Xuanwu region, Nanjing, 210095, Jiangsu, China.,Laboratory of Gastrointestinal Microbiology, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xiaofeng Zhu
- National Center for International Research on Animal Gut Nutrition, Nanjing Agricultural University, No.1 WeiGang, Xuanwu region, Nanjing, 210095, Jiangsu, China.,Laboratory of Gastrointestinal Microbiology, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Heba M Saad
- National Center for International Research on Animal Gut Nutrition, Nanjing Agricultural University, No.1 WeiGang, Xuanwu region, Nanjing, 210095, Jiangsu, China.,Laboratory of Gastrointestinal Microbiology, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China
| | - Suqin Hang
- National Center for International Research on Animal Gut Nutrition, Nanjing Agricultural University, No.1 WeiGang, Xuanwu region, Nanjing, 210095, Jiangsu, China. .,Laboratory of Gastrointestinal Microbiology, College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, 210095, China.
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17
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Zhang J, Feng F, Zhao M. Glycerol Monocaprylate Modulates Gut Microbiota and Increases Short-Chain Fatty Acids Production without Adverse Effects on Metabolism and Inflammation. Nutrients 2021; 13:1427. [PMID: 33922631 PMCID: PMC8147114 DOI: 10.3390/nu13051427] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Revised: 04/21/2021] [Accepted: 04/21/2021] [Indexed: 01/02/2023] Open
Abstract
Glycerol monocaprylate (GMC) is a glycerol derivative of medium-chain fatty acids (MCFAs) and is widely used as a preservative in food processing. However, GMC and its hydrolytic acid (octylic acid) have antibacterial properties that may affect the physiology and intestinal microecology of the human body. Therefore, in this study, the effects of two different dosages of GMC (150 and 1600 mg kg-1) on glucose, lipid metabolism, inflammation, and intestinal microecology of normal diet-fed C57BL/6 mice were comprehensively investigated. The obtained results showed that the level of triglycerides (TGs) in the low-dose group down-regulated significantly, and the anti-inflammatory cytokine interleukin 10 (IL-10) significantly increased, while the pro-inflammatory cytokines monocyte chemotactic protein 1 (MCP-1) and interleukin 1beta (IL-1β) in the high-dose group were significantly decreased. Importantly, GMC promoted the α-diversity of gut microbiota in normal-diet-fed mice, regardless of dosages. Additionally, it was found that the low-dose treatment of GMC significantly increased the abundance of Lactobacillus, while the high-dose treatment of GMC significantly increased the abundance of SCFA-producers such as Clostridiales, Lachnospiraceae, and Ruminococcus. Moreover, the content of short-chain fatty acids (SCFAs) was significantly increased by GMC supplementation. Thus, our research provides a novel insight into the effects of GMC on gut microbiota and physiological characteristics.
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Affiliation(s)
- Junhui Zhang
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China; (J.Z.); (F.F.)
- National Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang University, Hangzhou 310058, China
- Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, Zhejiang University, Hangzhou 310058, China
- Key Laboratory for Agro-Products Nutritional Evaluation of Ministry of Agriculture, Zhejiang University, Hangzhou 310058, China
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
| | - Fengqin Feng
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China; (J.Z.); (F.F.)
- National Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang University, Hangzhou 310058, China
- Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, Zhejiang University, Hangzhou 310058, China
- Key Laboratory for Agro-Products Nutritional Evaluation of Ministry of Agriculture, Zhejiang University, Hangzhou 310058, China
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
| | - Minjie Zhao
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China; (J.Z.); (F.F.)
- National Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang University, Hangzhou 310058, China
- Key Laboratory for Agro-Products Postharvest Handling of Ministry of Agriculture and Rural Affairs, Zhejiang University, Hangzhou 310058, China
- Key Laboratory for Agro-Products Nutritional Evaluation of Ministry of Agriculture, Zhejiang University, Hangzhou 310058, China
- Ningbo Research Institute, Zhejiang University, Ningbo 315100, China
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Shabbir U, Arshad MS, Sameen A, Oh DH. Crosstalk between Gut and Brain in Alzheimer's Disease: The Role of Gut Microbiota Modulation Strategies. Nutrients 2021; 13:690. [PMID: 33669988 PMCID: PMC7924846 DOI: 10.3390/nu13020690] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 02/12/2021] [Accepted: 02/17/2021] [Indexed: 02/06/2023] Open
Abstract
The gut microbiota (GM) represents a diverse and dynamic population of microorganisms and about 100 trillion symbiotic microbial cells that dwell in the gastrointestinal tract. Studies suggest that the GM can influence the health of the host, and several factors can modify the GM composition, such as diet, drug intake, lifestyle, and geographical locations. Gut dysbiosis can affect brain immune homeostasis through the microbiota-gut-brain axis and can play a key role in the pathogenesis of neurodegenerative diseases, including dementia and Alzheimer's disease (AD). The relationship between gut dysbiosis and AD is still elusive, but emerging evidence suggests that it can enhance the secretion of lipopolysaccharides and amyloids that may disturb intestinal permeability and the blood-brain barrier. In addition, it can promote the hallmarks of AD, such as oxidative stress, neuroinflammation, amyloid-beta formation, insulin resistance, and ultimately the causation of neural death. Poor dietary habits and aging, along with inflammatory responses due to dysbiosis, may contribute to the pathogenesis of AD. Thus, GM modulation through diet, probiotics, or fecal microbiota transplantation could represent potential therapeutics in AD. In this review, we discuss the role of GM dysbiosis in AD and potential therapeutic strategies to modulate GM in AD.
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Affiliation(s)
- Umair Shabbir
- Department of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 24341, Korea;
| | - Muhammad Sajid Arshad
- Department of Food Science, Faculty of Life Sciences, Government College University, Faisalabad 38000, Pakistan;
| | - Aysha Sameen
- National Institute of Food Science and Technology, Faculty of Food, Nutrition and Home Sciences, University of Agriculture, Faisalabad 38000, Pakistan;
| | - Deog-Hwan Oh
- Department of Food Science and Biotechnology, College of Agriculture and Life Sciences, Kangwon National University, Chuncheon 24341, Korea;
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