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Ji Y, Xiao Y, Li S, Fan Y, Cai Y, Yang B, Chen H, Hu S. Protective effect and mechanism of Xiaoyu Xiezhuo decoction on ischemia-reperfusion induced acute kidney injury based on gut-kidney crosstalk. Ren Fail 2024; 46:2365982. [PMID: 39010816 DOI: 10.1080/0886022x.2024.2365982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 06/04/2024] [Indexed: 07/17/2024] Open
Abstract
This study aimed to explore the mechanism of Xiaoyu Xiezhuo decoction (XXD) on ischemia-reperfusion-induced acute kidney injury (IRI-AKI) using network pharmacology methods and gut microbiota analysis. A total of 1778 AKI-related targets were obtained, including 140 targets possibly regulated by AKI in XXD, indicating that the core targets were mainly enriched in inflammatory-related pathways, such as the IL-17 signaling pathway and TNF signaling pathway. The unilateral IRI-AKI animal model was established and randomly divided into four groups: the sham group, the AKI group, the sham + XXD group, and the AKI + XXD group. Compared with the rats in the AKI group, XXD improved not only renal function, urinary enzymes, and biomarkers of renal damage such as Kim-1, cystatin C, and serum inflammatory factors such as IL-17, TNF-α, IL-6, and IL 1-β, but also intestinal metabolites including lipopolysaccharides, d-lactic acid, indoxyl sulfate, p-cresyl sulfate, and short-chain fatty acids. XXD ameliorated renal and colonic pathological injury as well as inflammation and chemokine gene abundance, such as IL-17, TNF-α, IL-6, IL-1β, ICAM-1, and MCP-1, in AKI rats via the TLR4/NF-κB/NLRP3 pathway, reducing the AKI score, renal pathological damage, and improving the intestinal mucosa's inflammatory infiltration. It also repaired markers of the mucosal barrier, including claudin-1, occludin, and ZO-1. Compared with the rats in the AKI group, the α diversity was significantly increased, and the Chao1 index was significantly enhanced after XXD treatment in both the sham group and the AKI group. The treatment group significantly reversed this change in microbiota.
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Affiliation(s)
- Yue Ji
- Department of Nephrology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, PR China
- Institute of Nephrology & Beijing Key Laboratory, Dongzhimen Hospital, Beijing University of Traditional Chinese Medicine, Beijing, PR China
- Department of Nephrology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, PR China
| | - Yunming Xiao
- Department of Nephrology, Medical School of Chinese PLA, First Medical Center of Chinese PLA General Hospital, Nephrology Institute of the Chinese People's Liberation Army, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing Key Laboratory of Kidney Disease Research, Beijing, PR China
| | - Shipian Li
- Department of Nephrology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, PR China
- Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, PR China
| | - Yihua Fan
- Department of Rheumatism and Immunity, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, PR China
| | - Yuzi Cai
- Institute of Nephrology & Beijing Key Laboratory, Dongzhimen Hospital, Beijing University of Traditional Chinese Medicine, Beijing, PR China
| | - Bo Yang
- Department of Nephrology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, PR China
| | - Hongbo Chen
- Department of Nephrology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, PR China
| | - Shouci Hu
- Department of Nephrology, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, PR China
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Pan S, Jiang SS, Li R, Tian B, Huang CY, Wang R, Li YY, Zhu H, Yuan YF, Hu X. Hong Guo Ginseng Guo (HGGG) protects against kidney injury in diabetic nephropathy by inhibiting NLRP3 inflammasome and regulating intestinal flora. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 132:155861. [PMID: 39024672 DOI: 10.1016/j.phymed.2024.155861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 05/09/2024] [Accepted: 07/03/2024] [Indexed: 07/20/2024]
Abstract
BACKGROUND Diabetic nephropathy (DN) is one of the most serious complications of diabetes which leads to end-stage renal failure and approximately one-third of patients need dialysis. There is still a lack of effective and specific treatment for DN. Searching new drugs from natural foods is an alternative approach to treat diabetes and its complications. Hong Guo Ginseng Guo (HGGG), a berry with palatability and nutritional benefits, has exhibited medicinal properties to mitigate the progression of DN. PURPOSE This study investigates the effects of HGGG on streptozotocin (STZ)-induced diabetic nephropathy (DN) in rats and elucidates the mechanisms underlying its reno-protective and diabetes management benefits. METHODS The LC-MS spectra method identified the primary ingredients in HGGG. To induce DN, male Sprague-Dawley (SD) rats received a single intraperitoneal injection of 75 mg/kg STZ. Over an eight-week treatment period, we assessed biochemical parameters including blood glucose, urine albumin-to-creatinine ratio (UACR), blood urea nitrogen (BUN), and urine N-acetyl-beta-d-glucosaminidase (NAG). Tissue pathology was examined using Masson's trichrome, Periodic Acid-Schiff (PAS), and Hematoxylin-Eosin (H&E) stains. We analyzed pro-inflammatory mediators and tissue fibrosis extent using Western blotting and immunohistochemistry. Gut microbiota composition was characterized via 16S rDNA sequencing. RESULTS Seventeen chemical compounds were identified, with lobetyolin, luteolin, and rutin highlighted as the primary active elements. HGGG extract appeared to confer renal protection, demonstrated by improvements in UACR, BUN, and urine NAG levels. The reno protective effects in HGGG-treated DN rats were linked to reduced renal fibrosis and inhibition of the NLRP3 inflammasome. Additionally, HGGG administration improved gut barrier integrity and altered the gut microbiota in DN rats, increasing the relative abundance of beneficial bacteria known for regulating polyamines and producing short-chain fatty acids (SCFAs), including Ruminococcus, Barnesiella_sp, Anaerovoracaceae, and Prevotellaceae_NK3B31. Meanwhile, treatment with HGGG decreasing the presence of Oscillospira, potential pathogens responsible for producing lipopolysaccharide (LPS). CONCLUSION HGGG has potential as a beneficial fruit for managing diabetes and its associated complications through modulation of the gut microbiota.
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Affiliation(s)
- Shu Pan
- Department of Pharmacy, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200011, China
| | - Shan-Shan Jiang
- Department of Pharmacy, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200011, China
| | - Rui Li
- National Key Laboratory of Lead Druggability Research, Shanghai Institute of Pharmaceutical Industry Co., Ltd., China State Institute of Pharmaceutical Industry, Shanghai, 201203, China
| | - Bei Tian
- Guizhou Innovation Agriculture Development Co., Ltd., Tongren, 554300, China
| | - Chun-Yue Huang
- National Key Laboratory of Lead Druggability Research, Shanghai Institute of Pharmaceutical Industry Co., Ltd., China State Institute of Pharmaceutical Industry, Shanghai, 201203, China
| | - Rong Wang
- Department of Pharmacy, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200011, China
| | - Yue-Yue Li
- Department of Pharmacy, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200011, China
| | - Hui Zhu
- Department of Pharmacy, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200011, China
| | - Yong-Fang Yuan
- Department of Pharmacy, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, 200011, China.
| | - Xiao Hu
- National Key Laboratory of Lead Druggability Research, Shanghai Institute of Pharmaceutical Industry Co., Ltd., China State Institute of Pharmaceutical Industry, Shanghai, 201203, China.
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Xiang X, Peng B, Liu K, Wang T, Ding P, Zhu Y, Cheng K, Ming Y. Prediction of delayed graft function by early salivary microbiota following kidney transplantation. Appl Microbiol Biotechnol 2024; 108:402. [PMID: 38951204 PMCID: PMC11217047 DOI: 10.1007/s00253-024-13236-w] [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: 11/07/2023] [Revised: 06/11/2024] [Accepted: 06/14/2024] [Indexed: 07/03/2024]
Abstract
Delayed graft function (DGF) is a frequently observed complication following kidney transplantation (KT). Our prior research revealed dynamic shifts in salivary microbiota post-KT with immediate graft function (IGF), yet its behavior during DGF remains unexplored. Five recipients with DGF and 35 recipients with IGF were enrolled. Saliva samples were collected during the perioperative period, and 16S rRNA gene sequencing was performed. The salivary microbiota of IGFs changed significantly and gradually stabilized with the recovery of renal function. The salivary microbiota composition of DGFs was significantly different from that of IGFs, although the trend of variation appeared to be similar to that of IGFs. Salivary microbiota that differed significantly between patients with DGF and IGF at 1 day after transplantation were able to accurately distinguish the two groups in the randomForest algorithm (accuracy = 0.8333, sensitivity = 0.7778, specificity = 1, and area under curve = 0.85), with Selenomonas playing an important role. Bacteroidales (Spearman's r = - 0.4872 and p = 0.0293) and Veillonella (Spearmen's r = - 0.5474 and p = 0.0125) were significantly associated with the serum creatinine in DGF patients. Moreover, the significant differences in overall salivary microbiota structure between DGF and IGF patients disappeared upon long-term follow-up. This is the first study to investigate the dynamic changes in salivary microbiota in DGFs. Our findings suggested that salivary microbiota was able to predict DGF in the early stages after kidney transplantation, which might help the perioperative clinical management and early-stage intervention of kidney transplant recipients. KEY POINTS: • Salivary microbiota on the first day after KT could predict DGF. • Alterations in salivary taxa after KT are related to recovery of renal function.
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Affiliation(s)
- Xuyu Xiang
- The Transplantation Center of the Third Xiangya Hospital, Central South University, Changsha, 410013, China
- Engineering and Technology Research Center for Transplantation Medicine of National Health Commission, Changsha, China
| | - Bo Peng
- The Transplantation Center of the Third Xiangya Hospital, Central South University, Changsha, 410013, China
- Engineering and Technology Research Center for Transplantation Medicine of National Health Commission, Changsha, China
| | - Kai Liu
- The Transplantation Center of the Third Xiangya Hospital, Central South University, Changsha, 410013, China
- Engineering and Technology Research Center for Transplantation Medicine of National Health Commission, Changsha, China
| | - Tianyin Wang
- The Transplantation Center of the Third Xiangya Hospital, Central South University, Changsha, 410013, China
- Engineering and Technology Research Center for Transplantation Medicine of National Health Commission, Changsha, China
| | - Peng Ding
- The Transplantation Center of the Third Xiangya Hospital, Central South University, Changsha, 410013, China
- Engineering and Technology Research Center for Transplantation Medicine of National Health Commission, Changsha, China
| | - Yi Zhu
- The Transplantation Center of the Third Xiangya Hospital, Central South University, Changsha, 410013, China
- Engineering and Technology Research Center for Transplantation Medicine of National Health Commission, Changsha, China
| | - Ke Cheng
- The Transplantation Center of the Third Xiangya Hospital, Central South University, Changsha, 410013, China
- Engineering and Technology Research Center for Transplantation Medicine of National Health Commission, Changsha, China
| | - Yingzi Ming
- The Transplantation Center of the Third Xiangya Hospital, Central South University, Changsha, 410013, China.
- Engineering and Technology Research Center for Transplantation Medicine of National Health Commission, Changsha, China.
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Huang JK, Wu PH, Chen ZF, Liu PY, Kuo CC, Chuang YS, Lu MZ, Kuo MC, Chiu YW, Lin YT. Identification of Gut Microbiome Signatures Associated with Indole Pathway in Tryptophan Metabolism in Patients Undergoing Hemodialysis. Biomolecules 2024; 14:623. [PMID: 38927027 PMCID: PMC11201546 DOI: 10.3390/biom14060623] [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: 04/30/2024] [Revised: 05/16/2024] [Accepted: 05/17/2024] [Indexed: 06/28/2024] Open
Abstract
Microbiota tryptophan metabolism and the biosynthesis of indole derivatives play an important role in homeostasis and pathogenesis in the human body and can be affected by the gut microbiota. However, studies on the interplay between gut microbiota and tryptophan metabolites in patients undergoing dialysis are lacking. This study aimed to identify the gut microbiota, the indole pathway in tryptophan metabolism, and significant functional differences in ESRD patients with regular hemodialysis. We performed the shotgun metagenome sequencing of stool samples from 85 hemodialysis patients. Using the linear discriminant analysis effect size (LEfSe), we examined the composition of the gut microbiota and metabolic features across varying concentrations of tryptophan and indole metabolites. Higher tryptophan levels promoted tyrosine degradation I and pectin degradation I metabolic modules; lower tryptophan levels were associated with glutamate degradation I, fructose degradation, and valine degradation modules. Higher 3-indoxyl sulfate concentrations were characterized by alanine degradation I, anaerobic fatty acid beta-oxidation, sulfate reduction, and acetyl-CoA to crotonyl-CoA. Contrarily, lower 3-indoxyl sulfate levels were related to propionate production III, arabinoxylan degradation, the Entner-Doudoroff pathway, and glutamate degradation II. The present study provides a better understanding of the interaction between tryptophan, indole metabolites, and the gut microbiota as well as their gut metabolic modules in ESRD patients with regular hemodialysis.
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Grants
- MOST 111-2314-B-037-032-MY3 Ministry of Science and Technology, Taiwan
- MOST 111-2314-B-037 -083 -MY3 Ministry of Science and Technology, Taiwan
- KMUH-DK(C)113003 Kaohsiung Medical University Hospital, Taiwan
- KMUH-DK(B)110003-4 Kaohsiung Medical University Hospital, Taiwan
- KMUH112-2M08 Kaohsiung Medical University Hospital, Taiwan
- KMUH112-2R21 Kaohsiung Medical University Hospital, Taiwan
- KMUH112-2R76 Kaohsiung Medical University Hospital, Taiwan
- KMUH111-1M60 Kaohsiung Medical University Hospital, Taiwan
- KMUH111-1R73 Kaohsiung Medical University Hospital, Taiwan
- KMUH110-0M73 Kaohsiung Medical University Hospital, Taiwan
- NHRIKMU-111-I003-2 Kaohsiung Medical University, Taiwan
- NHRIKMU-113-I005 Kaohsiung Medical University, Taiwan
- NYCUKMU-112-I006 Kaohsiung Medical University, Taiwan
- KT112P012 Kaohsiung Medical University, Taiwan
- KT113P006 Kaohsiung Medical University, Taiwan
- S11209 Kaohsiung Medical University, Taiwan
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Affiliation(s)
- Jih-Kai Huang
- Department of Emergency Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
| | - Ping-Hsun Wu
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (P.-H.W.); (M.-C.K.); (Y.-W.C.)
- Division of Nephrology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Center for Big Data Research, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
- Research Center for Precision Environmental Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Zhao-Feng Chen
- Department of Horticulture and Landscape Architecture, National Taiwan University, Taipei 10617, Taiwan;
| | - Po-Yu Liu
- School of Medicine, College of Medicine, National Sun Yat-sen University, Kaohsiung 804, Taiwan
| | - Cheng-Chin Kuo
- Institute of Cellular and System Medicine, National Health Research Institutes, Zhunan 3500, Taiwan;
| | - Yun-Shiuan Chuang
- Center for Big Data Research, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
- Research Center for Precision Environmental Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Family Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Meng-Zhan Lu
- Department of Post-Baccalaureate Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
| | - Mei-Chuan Kuo
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (P.-H.W.); (M.-C.K.); (Y.-W.C.)
- Division of Nephrology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Yi-Wen Chiu
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (P.-H.W.); (M.-C.K.); (Y.-W.C.)
- Division of Nephrology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Yi-Ting Lin
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan; (P.-H.W.); (M.-C.K.); (Y.-W.C.)
- Center for Big Data Research, Kaohsiung Medical University, Kaohsiung 807, Taiwan;
- Research Center for Precision Environmental Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Family Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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Mirmohammadali SN, Gallant KMH, Biruete A. Oh, My Gut! New insights on the role of the gastrointestinal tract and the gut microbiome in chronic kidney disease-mineral and bone disorder. Curr Opin Nephrol Hypertens 2024; 33:226-230. [PMID: 38088374 DOI: 10.1097/mnh.0000000000000961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
PURPOSE OF REVIEW The aim of this review is to highlight recent evidence on the role of the gastrointestinal tract and gut microbiome on chronic kidney disease-mineral bone disorder (CKD-MBD) outcomes, including intestinal phosphorus absorption and sensing, and the effect of gut-oriented therapies. RECENT FINDINGS Recent evidence has revealed a complex interplay among mineral metabolism and novel gut-related factors, including paracellular intestinal phosphate absorption, the gut microbiome, and the immune system, prompting a reevaluation of treatment approaches for CKD-MBD. The inhibition of NHE3 limits phosphate transport in the intestine and may lead to changes in the gut microbiome. A study in rats with CKD showed that the supplementation of the fermentable dietary inulin delayed CKD-MBD, lowering circulating phosphorus and parathyroid hormone, reducing bone remodeling and improving cortical parameters, and lowering cardiovascular calcifications. In non-CKD preclinical studies, probiotics and prebiotics improved bone formation mediated through the effect of butyrate facilitating the differentiation of T cells into Tregs, and Tregs stimulating the osteogenic Wnt10b, and butyrate was also necessary for the parathyroid hormone (PTH) bone effects. SUMMARY Recent findings support multiple possible roles for gut-oriented therapies in addressing CKD-MBD prevention and management that should be further explored through clinical and translational studies.
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Affiliation(s)
| | - Kathleen M Hill Gallant
- Department of Food Science and Nutrition, University of Minnesota, St. Paul, Minnesota
- Department of Medicine, Division of Nephrology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Annabel Biruete
- Department of Nutrition Science, Purdue University, West Lafayette, Indiana
- Department of Medicine, Division of Nephrology, Indiana University School of Medicine, Indianapolis, Indiana, USA
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Gao Q, Li D, Wang Y, Zhao C, Li M, Xiao J, Kang Y, Lin H, Wang N. Analysis of intestinal flora and cognitive function in maintenance hemodialysis patients using combined 16S ribosome DNA and shotgun metagenome sequencing. Aging Clin Exp Res 2024; 36:28. [PMID: 38334873 PMCID: PMC10857965 DOI: 10.1007/s40520-023-02645-y] [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: 08/16/2023] [Accepted: 12/08/2023] [Indexed: 02/10/2024]
Abstract
BACKGROUND Cognitive impairment is widely prevalent in maintenance hemodialysis (MHD) patients, and seriously affects their quality of life. The intestinal flora likely regulates cognitive function, but studies on cognitive impairment and intestinal flora in MHD patients are lacking. METHODS MHD patients (36) and healthy volunteers (18) were evaluated using the Montreal Cognitive Function Scale, basic clinical data, and 16S ribosome DNA (rDNA) sequencing. Twenty MHD patients and ten healthy volunteers were randomly selected for shotgun metagenomic analysis to explore potential metabolic pathways of intestinal flora. Both16S rDNA sequencing and shotgun metagenomic sequencing were conducted on fecal samples. RESULTS Roseburia were significantly reduced in the MHD group based on both 16S rDNA and shotgun metagenomic sequencing analyses. Faecalibacterium, Megamonas, Bifidobacterium, Parabacteroides, Collinsella, Tyzzerella, and Phascolarctobacterium were positively correlated with cognitive function or cognitive domains. Enriched Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways included oxidative phosphorylation, photosynthesis, retrograde endocannabinoid signaling, flagellar assembly, and riboflavin metabolism. CONCLUSION Among the microbiota, Roseburia may be important in MHD patients. We demonstrated a correlation between bacterial genera and cognitive function, and propose possible mechanisms.
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Affiliation(s)
- Qiuyi Gao
- Department of Nephrology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Dianshi Li
- Centre for Empirical Legal Studies, Faculty of Law, University of Macau, Macau, China
| | - Yue Wang
- Department of Nephrology, Binzhou Medical University Affiliated Shengli Oilfield Central Hospital, Binzhou, China
| | - Chunhui Zhao
- Department of Nephrology, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Mingshuai Li
- School of Graduate, Dalian Medical University, Dalian, China
| | - Jingwen Xiao
- School of Graduate, Dalian Medical University, Dalian, China
| | - Yan Kang
- School of Graduate, Dalian Medical University, Dalian, China
| | - Hongli Lin
- Department of Nephrology, The First Affiliated Hospital of Dalian Medical University, Dalian, China.
| | - Nan Wang
- Department of Nephrology, The First Affiliated Hospital of Dalian Medical University, Dalian, China.
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Behrens F, Bartolomaeus H, Wilck N, Holle J. Gut-immune axis and cardiovascular risk in chronic kidney disease. Clin Kidney J 2024; 17:sfad303. [PMID: 38229879 PMCID: PMC10790347 DOI: 10.1093/ckj/sfad303] [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: 08/02/2023] [Indexed: 01/18/2024] Open
Abstract
Patients with chronic kidney disease (CKD) suffer from marked cardiovascular morbidity and mortality, so lowering the cardiovascular risk is paramount to improve quality of life and survival in CKD. Manifold mechanisms are hold accountable for the development of cardiovascular disease (CVD), and recently inflammation arose as novel risk factor significantly contributing to progression of CVD. While the gut microbiome was identified as key regulator of immunity and inflammation in several disease, CKD-related microbiome-immune interaction gains increasing importance. Here, we summarize the latest knowledge on microbiome dysbiosis in CKD, subsequent changes in bacterial and host metabolism and how this drives inflammation and CVD in CKD. Moreover, we outline potential therapeutic targets along the gut-immune-cardiovascular axis that could aid the combat of CVD development and high mortality in CKD.
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Affiliation(s)
- Felix Behrens
- Department of Pediatric Gastroenterology, Nephrology and Metabolic Diseases, Charité – Universitätsmedizin Berlin, Berlin, Germany
- Experimental and Clinical Research Center (ECRC), a cooperation of Charité – Universitätsmedizin Berlin and Max Delbrück Center for Molecular Medicine (MDC), Berlin, Germany
- German Centre for Cardiovascular Research (DZHK), Partner Site Berlin, Berlin, Germany
- Institute of Physiology, Charité – Universitätsmedizin Berlin, Berlin, Germany
| | - Hendrik Bartolomaeus
- Experimental and Clinical Research Center (ECRC), a cooperation of Charité – Universitätsmedizin Berlin and Max Delbrück Center for Molecular Medicine (MDC), Berlin, Germany
- German Centre for Cardiovascular Research (DZHK), Partner Site Berlin, Berlin, Germany
- Max Delbrück Center for Molecular Medicine (MDC), Berlin, Germany
- Department of Nephrology und Intensive Medical Care, Charité – Universitätsmedizin Berlin, Berlin, Germany
| | - Nicola Wilck
- Experimental and Clinical Research Center (ECRC), a cooperation of Charité – Universitätsmedizin Berlin and Max Delbrück Center for Molecular Medicine (MDC), Berlin, Germany
- German Centre for Cardiovascular Research (DZHK), Partner Site Berlin, Berlin, Germany
- Max Delbrück Center for Molecular Medicine (MDC), Berlin, Germany
- Department of Nephrology und Intensive Medical Care, Charité – Universitätsmedizin Berlin, Berlin, Germany
| | - Johannes Holle
- Department of Pediatric Gastroenterology, Nephrology and Metabolic Diseases, Charité – Universitätsmedizin Berlin, Berlin, Germany
- Experimental and Clinical Research Center (ECRC), a cooperation of Charité – Universitätsmedizin Berlin and Max Delbrück Center for Molecular Medicine (MDC), Berlin, Germany
- German Centre for Cardiovascular Research (DZHK), Partner Site Berlin, Berlin, Germany
- Max Delbrück Center for Molecular Medicine (MDC), Berlin, Germany
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Bao WH, Yang WL, Su CY, Lu XH, He L, Zhang AH. Relationship between gut microbiota and vascular calcification in hemodialysis patients. Ren Fail 2023; 45:2148538. [PMID: 36632746 PMCID: PMC9848239 DOI: 10.1080/0886022x.2022.2148538] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
INTRODUCTION Vascular calcification (VC) is an independent risk factor for cardiovascular mortality in end-stage renal disease (ESRD) patients. The pathogenesis of VC is complicated and unclear. Uremic toxins produced by gut microbiota can promote VC. This study aims to identify the differences in gut microbiota between the different VC groups and the main bacteria associated with VC in hemodialysis (HD) patients in an attempt to open up new preventive and therapeutic approaches and define the probable mechanism for VC in HD patients in the future. METHODS A total of 73 maintenance HD patients were enrolled in this cross-sectional study. According to the abdominal aortic calcification (AAC) scores, the participants were divided into the high AAC score group and the low AAC score group. High-throughput sequencing of the gut microbiota was performed and the results were evaluated by alpha diversity, beta diversity, species correlation, and model predictive analyses. RESULTS The prevalence of VC was 54.79% (40/73) in the study. The majority of phyla in the two groups were the same, including Firmicutes, Actinobacteriota, Proteobacteria, and Bacteroidota. The microbial diversity in the high AAC score group had a decreasing trend (p = 0.050), and the species abundance was significantly lower (p = 0.044) than that in the low AAC score group. The HD patients with high AAC scores showed an increased abundance of Proteobacteria and decreased abundances of Bacteroidota and Synergistota at the phylum level; increased abundances of Escherichia-Shigella, Ruminococcus_gnavus_group, and Lactobacillus; and decreased abundances of Ruminococcus and Lachnospiraceae_NK4A136_group at the genus level (p<0.05). Escherichia-Shigella and Ruminococcus_gnavus_group were positively correlated with VC, and Ruminococcus, Adlercreutzia, Alistipes, and norank_f__Ruminococcaceae were negatively correlated with VC. Escherichia-Shigella had the greatest influence on VC in HD patients, followed by Ruminococcus and Butyricimonas. CONCLUSIONS Our results provide clinical evidence that there was a difference in gut microbiota between the different VC groups in HD patients. Escherichia-Shigella, a lipopolysaccharide (LPS)-producing bacterium, was positively correlated with VC and had the greatest influence on VC. Ruminococcus, a short-chain fatty acid (SCFA)-producing bacterium, was negatively correlated with VC and had the second strongest influence on VC in HD patients. The underlying mechanism is worth studying. These findings hint at a new therapeutic target.
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Affiliation(s)
- Wen-Han Bao
- Department of Nephrology, Peking University Third Hospital, Beijing, PR China
| | - Wen-Ling Yang
- Department of Nephrology, Peking University Third Hospital, Beijing, PR China
| | - Chun-Yan Su
- Department of Nephrology, Peking University Third Hospital, Beijing, PR China
| | - Xin-Hong Lu
- Department of Nephrology, Peking University Third Hospital, Beijing, PR China
| | - Lian He
- Department of Nephrology, Peking University Third Hospital, Beijing, PR China,CONTACT Lian He Department of Nephrology, Peking University Third Hospital, Beijing, PR China
| | - Ai-Hua Zhang
- Department of Nephrology, Xuanwu Hospital Capital Medical University, Beijing, PR China,Ai-Hua Zhang Department of Nephrology, Xuanwu Hospital Capital Medical University, Beijing, PR China
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Tian X, Zeng Y, Tu Q, Jiao Y, Yao S, Chen Y, Sun L, Xia Q, Luo Y, Yuan L, Jiang Q. Butyrate alleviates renal fibrosis in CKD by regulating NLRP3-mediated pyroptosis via the STING/NF-κB/p65 pathway. Int Immunopharmacol 2023; 124:111010. [PMID: 37852118 DOI: 10.1016/j.intimp.2023.111010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/26/2023] [Accepted: 09/27/2023] [Indexed: 10/20/2023]
Abstract
Chronic kidney disease (CKD) is a serious and irreversible disease primarily characterized by chronic inflammation and renal fibrosis. Recent studies have suggested that gut microbiota-related metabolites, particularly short-chain fatty acids (SCFAs) are significantly associated with kidney diseases. Notably, butyrate, a type of SCFAs, plays a crucial role in this correlation. However, the effect of butyrate on renal fibrosis in patients with CKD and its potential mechanisms remain unclear. In this study, we demonstrated that butyrate levels are reduced as CKD progresses using a CKD C57BL/6 mouse model established by a 0.2% adenine diet. Exogenous supplementation of butyrate effectively alleviated renal fibrosis and repressed the levels of proteins associated with NLRP3-mediated pyroptosis (NLRP3, IL-1β, caspase-1, and GSDMD). Additionally, we conducted an in vitro experiment using HK-2 cells, which also confirmed that the elevated levels of NLRP3-mediated pyroptosis proteins in TGF-β1-stimulated HK-2 cells are reversed by butyrate intervention. Further, butyrate mitigated the activity of the STING/NF-κB/p65 pathway, and STING overexpression impaired the protective function of butyrate in CKD. Hence, we suggest that butyrate may have a renoprotective role in CKD, alleviating renal fibrosis possibly by regulating NLRP3-mediated pyroptosis via the STING/NF-κB/p65 pathway.
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Affiliation(s)
- Xiaofang Tian
- Medical College of Soochow University, 215123 Suzhou, Jiangsu, China; The First People's Hospital of Zunyi (the Third Affiliated Hospital of Zunyi Medical University), 563000 Zunyi, Guizhou, China
| | - Yizhou Zeng
- The First People's Hospital of Zunyi (the Third Affiliated Hospital of Zunyi Medical University), 563000 Zunyi, Guizhou, China
| | - Qingxian Tu
- The First People's Hospital of Zunyi (the Third Affiliated Hospital of Zunyi Medical University), 563000 Zunyi, Guizhou, China
| | - Yang Jiao
- The First People's Hospital of Zunyi (the Third Affiliated Hospital of Zunyi Medical University), 563000 Zunyi, Guizhou, China
| | - Song Yao
- The First People's Hospital of Zunyi (the Third Affiliated Hospital of Zunyi Medical University), 563000 Zunyi, Guizhou, China
| | - Ying Chen
- The First People's Hospital of Zunyi (the Third Affiliated Hospital of Zunyi Medical University), 563000 Zunyi, Guizhou, China
| | - Li Sun
- The First People's Hospital of Zunyi (the Third Affiliated Hospital of Zunyi Medical University), 563000 Zunyi, Guizhou, China
| | - Qianhang Xia
- The First People's Hospital of Zunyi (the Third Affiliated Hospital of Zunyi Medical University), 563000 Zunyi, Guizhou, China
| | - Yadan Luo
- The First People's Hospital of Zunyi (the Third Affiliated Hospital of Zunyi Medical University), 563000 Zunyi, Guizhou, China
| | - Liying Yuan
- The First People's Hospital of Zunyi (the Third Affiliated Hospital of Zunyi Medical University), 563000 Zunyi, Guizhou, China
| | - Qianfeng Jiang
- Medical College of Soochow University, 215123 Suzhou, Jiangsu, China; The First People's Hospital of Zunyi (the Third Affiliated Hospital of Zunyi Medical University), 563000 Zunyi, Guizhou, China; Guizhou Aerospace Hospital, 563000 Zunyi, Guizhou, China.
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10
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Lambert K, Rinninella E, Biruete A, Sumida K, Stanford J, Raoul P, Mele MC, Wang AYM, Mafra D. Targeting the Gut Microbiota in Kidney Disease: The Future in Renal Nutrition and Metabolism. J Ren Nutr 2023; 33:S30-S39. [PMID: 37632511 PMCID: PMC10872791 DOI: 10.1053/j.jrn.2022.12.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 10/05/2022] [Accepted: 12/10/2022] [Indexed: 08/28/2023] Open
Abstract
There is increasing interest in the therapeutic potential of manipulating the gut microbiome of patients with chronic kidney disease (CKD). This is because there is a substantial deviation from a balanced gut microbiota profile in CKD, with many deleterious downstream effects. Nutritional interventions such as plant-based diets with reduced animal protein intake and the use of probiotics, prebiotics, and synbiotics may alter the microbiome. This article aims to briefly describe what is known about the gut microbiome in patients with CKD, factors contributing to gut dysbiosis, and outline important evidence gaps. Future potential therapies, including restoring the microbiota with food and microbiota-based and metabolomic-based therapies, are also discussed.
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Affiliation(s)
- Kelly Lambert
- School of Medical, Indigenous, and Health Sciences, Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, New South Wales, Australia.
| | - Emanuele Rinninella
- Clinical Nutrition Unit, Department of Medical and Surgical Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy; Department of Translational Medicine and Surgery, Catholic University of the Sacred Heart, Rome, Italy
| | - Annabel Biruete
- Department of Nutrition Science, Purdue University, West Lafayette, Indiana, USA, Division of Nephrology, Indiana University School of Medicine, Indianapolis, Indiana
| | - Keiichi Sumida
- Division of Nephrology, Department of Medicine, University of Tennessee Health Science Center, Tennessee
| | - Jordan Stanford
- School of Medical, Indigenous, and Health Sciences, Faculty of Science, Medicine and Health, University of Wollongong, Wollongong, New South Wales, Australia
| | - Pauline Raoul
- Clinical Nutrition Unit, Department of Medical and Surgical Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Maria Cristina Mele
- Clinical Nutrition Unit, Department of Medical and Surgical Sciences, Fondazione Policlinico Universitario A. Gemelli IRCCS, Rome, Italy
| | - Angela Yee-Moon Wang
- Department of Medicine, Queen Mary Hospital, The University of Hong Kong, Hong Kong SAR, China
| | - Denise Mafra
- Professor, Graduate Program in Nutrition Sciences, Fluminense Federal University, Niterói, Rio de Janeiro, Brazil
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11
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Wu Z, Gou R, Sha L, Yu C, Meng L, Jin Z. Effects of Luteolin-7-O-Glucoside on Intestinal Microbiota Dysbiosis and Drug Resistance Transmission Caused by Raoultella ornithinolytica B1645-1: Modulating the Composition of Intestinal Microbiota and Promoting the Transfer of blaNDM-1 Gene from Genus Enterococcus to Lactobacillus in Mice. Microorganisms 2023; 11:2477. [PMID: 37894135 PMCID: PMC10609467 DOI: 10.3390/microorganisms11102477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 09/27/2023] [Accepted: 09/28/2023] [Indexed: 10/29/2023] Open
Abstract
Raoultella ornithinolytica is an Enterobacteriaceae bacterium that can infect both humans and animals, while luteolin-7-O-glucoside (IOG) is a flavonoid that has broad effects on the intestinal microbiota of healthy animals. However, current studies lack sufficient data on intestinal microbiota dysbiosis and drug resistance transmission caused by R. ornithinolytica and the possible role of IOG. In this study, BALB/c mice were infected with R. ornithinolytica carrying blaNDM-1 gene and treated with IOG (3 mg/kg·d and 6 mg/kg·d) to analyze the diversity of intestinal microbiota and the transfer of blaNDM-1 between bacteria. The findings indicated that R. ornithinolytica B1645-1 exhibited a significant ability to enhance the Firmicutes/Bacteroidota ratio and increase the relative abundance of Lactobacillus and Bacillus after 48 h, where as 6 mg/kg·d IOG had an opposite effect. Moreover, R. ornithinolytica B1645-1 facilitated the emergence of drug-resistant bacteria and promoted blaNDM-1 gene transfer in Enterococcus, Escherichia, Klebsiella, Acinetobacter, Bacillus, Brevibacterium, and Lactobacillus. Enterococcus was the predominant genus at 48 h. Surprisingly, 6 mg/kg·d IOG significantly inhibited the production of drug-resistant bacteria and promoted blaNDM-1 gene transfer from Enterococcus to Lactobacillus at 144 h. However, the role of Lactobacillus as a recipient for drug-resistant genes should be of more concern.
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Affiliation(s)
- Zhaomeng Wu
- Hubei Key Laboratory of Embryonic Stem Cell Research, School of Basic Medical Sciences, Hubei University of Medicine, Shiyan 442000, China; (Z.W.); (R.G.); (L.S.); (C.Y.)
| | - Ronghui Gou
- Hubei Key Laboratory of Embryonic Stem Cell Research, School of Basic Medical Sciences, Hubei University of Medicine, Shiyan 442000, China; (Z.W.); (R.G.); (L.S.); (C.Y.)
| | - Longhua Sha
- Hubei Key Laboratory of Embryonic Stem Cell Research, School of Basic Medical Sciences, Hubei University of Medicine, Shiyan 442000, China; (Z.W.); (R.G.); (L.S.); (C.Y.)
| | - Chunfang Yu
- Hubei Key Laboratory of Embryonic Stem Cell Research, School of Basic Medical Sciences, Hubei University of Medicine, Shiyan 442000, China; (Z.W.); (R.G.); (L.S.); (C.Y.)
| | - Lixue Meng
- Hubei Key Laboratory of Embryonic Stem Cell Research, School of Basic Medical Sciences, Hubei University of Medicine, Shiyan 442000, China; (Z.W.); (R.G.); (L.S.); (C.Y.)
| | - Zhixiong Jin
- Hubei Key Laboratory of Embryonic Stem Cell Research, School of Basic Medical Sciences, Hubei University of Medicine, Shiyan 442000, China; (Z.W.); (R.G.); (L.S.); (C.Y.)
- Hubei Key Laboratory of Wudang Local Chinese Medicine Research, School of Pharmaceutical Sciences, Hubei University of Medicine, Shiyan 442000, China
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12
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Geng R, Fang J, Kang SG, Huang K, Tong T. Chronic exposure to UVB induces nephritis and gut microbiota dysbiosis in mice based on the integration of renal transcriptome profiles and 16S rRNA sequencing data. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 333:122035. [PMID: 37343920 DOI: 10.1016/j.envpol.2023.122035] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 06/02/2023] [Accepted: 06/12/2023] [Indexed: 06/23/2023]
Abstract
Ultraviolet (UV) is a common and abundant environmental factor that affects daily life. Although the effects of UV radiation on the skin have been extensively reported, studies on the influence of UV radiation on internal organs are still limited. This study aimed to evaluate the influence of UVB exposure on the kidney of mice and to investigate the possible mechanism. In the present study, histopathology changes, oxidative stress, and inflammatory response were used to evaluate the kidney and colon injury induced by UVB exposure. The results showed that the 14-week chronic skin exposure to UVB triggers a kidney injury response characterized by macrophage infiltration, elevated oxidative stress as well as inflammatory and injury markers. The RNA sequencing demonstrated that chronic UVB exposure could alter the kidney transcriptomic profile distinguished by the regulation of genes involved in the Notch signaling pathway, JAK-STAT signaling pathway, and ECM-receptor interaction. Besides, chronic UVB exposure also resulted in gut dysbiosis, manifested as colon macrophage infiltration, stimulated inflammatory responses, impaired barrier integrity, and microbiota structural and functional disorders. The Spearman analysis results further revealed a strong correlation between gut microbiota and kidney injury. In conclusion, skin chronic exposure to UVB causes nephritis and gut microbiota dysbiosis in mice, and these findings provide new insight into the underlying risks of chronic UVB exposure to human wellness.
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Affiliation(s)
- Ruixuan Geng
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education; College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.
| | - Jingjing Fang
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education; College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Seong-Gook Kang
- Department of Food Engineering, Mokpo National University, Muangun 58554, South Korea
| | - Kunlun Huang
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education; College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China; Key Laboratory of Safety Assessment of Agricultural Genetically Modified Organisms (Food), Ministry of Agriculture and Rural Affairs, Beijing, China; Beijing Laboratory for Food Quality and Safety, Beijing, China
| | - Tao Tong
- Key Laboratory of Precision Nutrition and Food Quality, Key Laboratory of Functional Dairy, Ministry of Education; College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China; Key Laboratory of Safety Assessment of Agricultural Genetically Modified Organisms (Food), Ministry of Agriculture and Rural Affairs, Beijing, China; Beijing Laboratory for Food Quality and Safety, Beijing, China.
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13
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Hammond TC, Green SJ, Jacobs Y, Chlipala GE, Xing X, Heil S, Chen A, Aware C, Flemister A, Stromberg A, Balchandani P, Lin AL. Gut microbiome association with brain imaging markers, APOE genotype, calcium and vegetable intakes, and obesity in healthy aging adults. Front Aging Neurosci 2023; 15:1227203. [PMID: 37736325 PMCID: PMC10510313 DOI: 10.3389/fnagi.2023.1227203] [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: 05/22/2023] [Accepted: 08/17/2023] [Indexed: 09/23/2023] Open
Abstract
Introduction Advanced age is a significant factor in changes to brain physiology and cognitive functions. Recent research has highlighted the critical role of the gut microbiome in modulating brain functions during aging, which can be influenced by various factors such as apolipoprotein E (APOE) genetic variance, body mass index (BMI), diabetes, and dietary intake. However, the associations between the gut microbiome and these factors, as well as brain structural, vascular, and metabolic imaging markers, have not been well explored. Methods We recruited 30 community dwelling older adults between age 55-85 in Kentucky. We collected the medical history from the electronic health record as well as the Dietary Screener Questionnaire. We performed APOE genotyping with an oral swab, gut microbiome analysis using metagenomics sequencing, and brain structural, vascular, and metabolic imaging using MRI. Results Individuals with APOE e2 and APOE e4 genotypes had distinct microbiota composition, and higher level of pro-inflammatory microbiota were associated higher BMI and diabetes. In contrast, calcium- and vegetable-rich diets were associated with microbiota that produced short chain fatty acids leading to an anti-inflammatory state. We also found that important gut microbial butyrate producers were correlated with the volume of the thalamus and corpus callosum, which are regions of the brain responsible for relaying and processing information. Additionally, putative proinflammatory species were negatively correlated with GABA production, an inhibitory neurotransmitter. Furthermore, we observed that the relative abundance of bacteria from the family Eggerthellaceae, equol producers, was correlated with white matter integrity in tracts connecting the brain regions related to language, memory, and learning. Discussion These findings highlight the importance of gut microbiome association with brain health in aging population and could have important implications aimed at optimizing healthy brain aging through precision prebiotic, probiotic or dietary interventions.
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Affiliation(s)
- Tyler C. Hammond
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY, United States
- Department of Neuroscience, University of Kentucky, Lexington, KY, United States
| | - Stefan J. Green
- Genomics and Microbiome Core Facility, Rush University, Chicago, IL, United States
| | - Yael Jacobs
- BioMedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - George E. Chlipala
- Research Informatics Core, University of Illinois Chicago, Chicago, IL, United States
| | - Xin Xing
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY, United States
- Department of Computer Science, University of Kentucky, Lexington, KY, United States
- Roy Blunt NextGen Precision Health, University of Missouri, Columbia, MO, United States
- Department of Radiology, University of Missouri, Columbia, MO, United States
| | - Sally Heil
- School of Medicine, University of Missouri, Columbia, MO, United States
| | - Anna Chen
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY, United States
| | - Chetan Aware
- Roy Blunt NextGen Precision Health, University of Missouri, Columbia, MO, United States
- Department of Radiology, University of Missouri, Columbia, MO, United States
| | - Abeoseh Flemister
- Roy Blunt NextGen Precision Health, University of Missouri, Columbia, MO, United States
- Department of Radiology, University of Missouri, Columbia, MO, United States
| | - Arnold Stromberg
- Dr. Bing Zhang Department of Statistics, University of Kentucky, Lexington, KY, United States
| | - Priti Balchandani
- BioMedical Engineering and Imaging Institute, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Ai-Ling Lin
- Sanders-Brown Center on Aging, University of Kentucky, Lexington, KY, United States
- Roy Blunt NextGen Precision Health, University of Missouri, Columbia, MO, United States
- Department of Radiology, University of Missouri, Columbia, MO, United States
- Institute for Data Science and Informatics, University of Missouri, Columbia, MO, United States
- Division of Biological Sciences, University of Missouri, Columbia, MO, United States
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14
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Wang L, Wang F, Xiong L, Song H, Ren B, Shen X. A nexus of dietary restriction and gut microbiota: Recent insights into metabolic health. Crit Rev Food Sci Nutr 2023:1-23. [PMID: 37154021 DOI: 10.1080/10408398.2023.2202750] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
In recent times, dietary restriction (DR) has received considerable attention for its promising effects on metabolism and longevity. Previous studies on DR have mainly focused on the health benefits produced by different restriction patterns, whereas comprehensive reviews of the role of gut microbiota during DR are limited. In this review, we discuss the effects of caloric restriction, fasting, protein restriction, and amino acid restriction from a microbiome perspective. Furthermore, the underlying mechanisms by which DR affects metabolic health by regulating intestinal homeostasis are summarized. Specifically, we reviewed the impacts of different DRs on specific gut microbiota. Additionally, we put forward the limitations of the current research and suggest the development of personalized microbes-directed DR for different populations and corresponding next-generation sequencing technologies for accurate microbiological analysis. DR effectively modulates the composition of the gut microbiota and microbial metabolites. In particular, DR markedly affects the rhythmic oscillation of microbes which may be related to the circadian clock system. Moreover, increasing evidence supports that DR profoundly improves metabolic syndrome, inflammatory bowel disease, and cognitive impairment. To summarize, DR may be an effective and executable dietary manipulation strategy for maintaining metabolic health, however, further investigation is needed to elucidate the underlying mechanisms.
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Affiliation(s)
- Luanfeng Wang
- College of Food Science and Engineering, Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing, China
| | - Fang Wang
- College of Food Science and Engineering, Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing, China
| | - Ling Xiong
- College of Food Science and Engineering, Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing, China
| | - Haizhao Song
- College of Food Science and Engineering, Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing, China
| | - Bo Ren
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing, China
| | - Xinchun Shen
- College of Food Science and Engineering, Nanjing University of Finance and Economics/Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing, China
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15
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Abstract
Homeostasis is a prerequisite for health. When homeostasis becomes disrupted, dysfunction occurs. This is especially the case for the gut microbiota, which under normal conditions lives in symbiosis with the host. As there are as many microbial cells in and on our body as human cells, it is unlikely they would not contribute to health or disease. The gut bacterial metabolism generates numerous beneficial metabolites but also uremic toxins and their precursors, which are transported into the circulation. Barrier function in the intestine, the heart, and the kidneys regulates metabolite transport and concentration and plays a role in inter-organ and inter-organism communication via small molecules. This communication is analyzed from the perspective of the remote sensing and signaling theory, which emphasizes the role of a large network of multispecific, oligospecific, and monospecific transporters and enzymes in regulating small-molecule homeostasis. The theory provides a systems biology framework for understanding organ cross talk and microbe-host communication involving metabolites, signaling molecules, nutrients, antioxidants, and uremic toxins. This remote small-molecule communication is critical for maintenance of homeostasis along the gut-heart-kidney axis and for responding to homeostatic perturbations. Chronic kidney disease is characterized by gut dysbiosis and accumulation of toxic metabolites. This slowly impacts the body, affecting the cardiovascular system and contributing to the progression of kidney dysfunction, which in its turn influences the gut microbiota. Preserving gut homeostasis and barrier functions or restoring gut dysbiosis and dysfunction could be a minimally invasive way to improve patient outcomes and quality of life in many diseases, including cardiovascular and kidney disease.
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Affiliation(s)
- Griet Glorieux
- Nephrology Unit, Department of Internal Medicine and Pediatrics, Ghent University Hospital, Gent, Belgium (G.G., R.V., F.V.)
| | - Sanjay K Nigam
- Department of Pediatrics (S.K.N.), University of California San Diego, La Jolla, CA
- Division of Nephrology, Department of Medicine (S.K.N.), University of California San Diego, La Jolla, CA
| | - Raymond Vanholder
- Nephrology Unit, Department of Internal Medicine and Pediatrics, Ghent University Hospital, Gent, Belgium (G.G., R.V., F.V.)
| | - Francis Verbeke
- Nephrology Unit, Department of Internal Medicine and Pediatrics, Ghent University Hospital, Gent, Belgium (G.G., R.V., F.V.)
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16
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Voroneanu L, Burlacu A, Brinza C, Covic A, Balan GG, Nistor I, Popa C, Hogas S, Covic A. Gut Microbiota in Chronic Kidney Disease: From Composition to Modulation towards Better Outcomes-A Systematic Review. J Clin Med 2023; 12:jcm12051948. [PMID: 36902734 PMCID: PMC10003930 DOI: 10.3390/jcm12051948] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 02/22/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023] Open
Abstract
BACKGROUND A bidirectional kidney-gut axis was described in patients with chronic kidney disease (CKD). On the one hand, gut dysbiosis could promote CKD progression, but on the other hand, studies reported specific gut microbiota alterations linked to CKD. Therefore, we aimed to systematically review the literature on gut microbiota composition in CKD patients, including those with advanced CKD stages and end-stage kidney disease (ESKD), possibilities to shift gut microbiota, and its impact on clinical outcomes. MATERIALS AND METHODS We performed a literature search in MEDLINE, Embase, Scopus, and Cochrane databases to find eligible studies using pre-specified keywords. Additionally, key inclusion and exclusion criteria were pre-defined to guide the eligibility assessment. RESULTS We retrieved 69 eligible studies which met all inclusion criteria and were analyzed in the present systematic review. Microbiota diversity was decreased in CKD patients as compared to healthy individuals. Ruminococcus and Roseburia had good power to discriminate between CKD patients and healthy controls (AUC = 0.771 and AUC = 0.803, respectively). Roseburia abundance was consistently decreased in CKD patients, especially in those with ESKD (p < 0.001). A model based on 25 microbiota dissimilarities had an excellent predictive power for diabetic nephropathy (AUC = 0.972). Several microbiota patterns were observed in deceased ESKD patients as compared to the survivor group (increased Lactobacillus, Yersinia, and decreased Bacteroides and Phascolarctobacterium levels). Additionally, gut dysbiosis was associated with peritonitis and enhanced inflammatory activity. In addition, some studies documented a beneficial effect on gut flora composition attributed to synbiotic and probiotic therapies. Large randomized clinical trials are required to investigate the impact of different microbiota modulation strategies on gut microflora composition and subsequent clinical outcomes. CONCLUSIONS Patients with CKD had an altered gut microbiome profile, even at early disease stages. Different abundance at genera and species levels could be used in clinical models to discriminate between healthy individuals and patients with CKD. ESKD patients with an increased mortality risk could be identified through gut microbiota analysis. Modulation therapy studies are warranted.
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Affiliation(s)
- Luminita Voroneanu
- Nephrology Department, Dialysis and Renal Transplant Center, “Dr. C.I. Parhon” University Hospital, 700503 Iasi, Romania
- Faculty of Medicine, ‘Grigore T. Popa’ University of Medicine, 700115 Iasi, Romania
| | - Alexandru Burlacu
- Faculty of Medicine, ‘Grigore T. Popa’ University of Medicine, 700115 Iasi, Romania
- Department of Interventional Cardiology, Cardiovascular Diseases Institute “Prof. Dr. George I.M. Georgescu”, 700503 Iasi, Romania
| | - Crischentian Brinza
- Faculty of Medicine, ‘Grigore T. Popa’ University of Medicine, 700115 Iasi, Romania
- Department of Interventional Cardiology, Cardiovascular Diseases Institute “Prof. Dr. George I.M. Georgescu”, 700503 Iasi, Romania
| | - Andreea Covic
- Nephrology Department, Dialysis and Renal Transplant Center, “Dr. C.I. Parhon” University Hospital, 700503 Iasi, Romania
- Faculty of Medicine, ‘Grigore T. Popa’ University of Medicine, 700115 Iasi, Romania
- Correspondence:
| | - Gheorghe G. Balan
- Faculty of Medicine, ‘Grigore T. Popa’ University of Medicine, 700115 Iasi, Romania
- Institute of Gastroenterology and Hepatology, St. 1 Spiridon Emergency County Hospital, 700111 Iasi, Romania
| | - Ionut Nistor
- Nephrology Department, Dialysis and Renal Transplant Center, “Dr. C.I. Parhon” University Hospital, 700503 Iasi, Romania
- Faculty of Medicine, ‘Grigore T. Popa’ University of Medicine, 700115 Iasi, Romania
| | - Cristina Popa
- Faculty of Medicine, ‘Grigore T. Popa’ University of Medicine, 700115 Iasi, Romania
| | - Simona Hogas
- Nephrology Department, Dialysis and Renal Transplant Center, “Dr. C.I. Parhon” University Hospital, 700503 Iasi, Romania
- Faculty of Medicine, ‘Grigore T. Popa’ University of Medicine, 700115 Iasi, Romania
| | - Adrian Covic
- Nephrology Department, Dialysis and Renal Transplant Center, “Dr. C.I. Parhon” University Hospital, 700503 Iasi, Romania
- Faculty of Medicine, ‘Grigore T. Popa’ University of Medicine, 700115 Iasi, Romania
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17
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Ge H, Li T, Yang Q, Tang Y, Liu J, Yu Y, Zhang T. Egg white peptides administration in enhancing pathological immune response and regulating intestinal bacteria abundance: A new strategy for relieving young mice colitis. FOOD FRONTIERS 2023. [DOI: 10.1002/fft2.213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Affiliation(s)
- Huifang Ge
- Jilin Provincial Key Laboratory of Nutrition and Functional Food and College of Food Science and Engineering Jilin University Changchun People's Republic of China
| | - Ting Li
- Jilin Provincial Key Laboratory of Nutrition and Functional Food and College of Food Science and Engineering Jilin University Changchun People's Republic of China
| | - Qi Yang
- Jilin Provincial Key Laboratory of Nutrition and Functional Food and College of Food Science and Engineering Jilin University Changchun People's Republic of China
| | - Yuanhu Tang
- Jilin Provincial Key Laboratory of Nutrition and Functional Food and College of Food Science and Engineering Jilin University Changchun People's Republic of China
| | - Jingbo Liu
- Jilin Provincial Key Laboratory of Nutrition and Functional Food and College of Food Science and Engineering Jilin University Changchun People's Republic of China
| | - Yiding Yu
- Jilin Provincial Key Laboratory of Nutrition and Functional Food and College of Food Science and Engineering Jilin University Changchun People's Republic of China
| | - Ting Zhang
- Jilin Provincial Key Laboratory of Nutrition and Functional Food and College of Food Science and Engineering Jilin University Changchun People's Republic of China
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18
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Gut microbiome studies in CKD: opportunities, pitfalls and therapeutic potential. Nat Rev Nephrol 2023; 19:87-101. [PMID: 36357577 DOI: 10.1038/s41581-022-00647-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/17/2022] [Indexed: 11/12/2022]
Abstract
Interest in gut microbiome dysbiosis and its potential association with the development and progression of chronic kidney disease (CKD) has increased substantially in the past 6 years. In parallel, the microbiome field has matured considerably as the importance of host-related and environmental factors is increasingly recognized. Past research output in the context of CKD insufficiently considered the myriad confounding factors that are characteristic of the disease. Gut microbiota-derived metabolites remain an interesting therapeutic target to decrease uraemic (cardio)toxicity. However, future studies on the effect of dietary and biotic interventions will require harmonization of relevant readouts to enable an in-depth understanding of the underlying beneficial mechanisms. High-quality standards throughout the entire microbiome analysis workflow are also of utmost importance to obtain reliable and reproducible results. Importantly, investigating the relative composition and abundance of gut bacteria, and their potential association with plasma uraemic toxins levels is not sufficient. As in other fields, the time has come to move towards in-depth quantitative and functional exploration of the patient's gut microbiome by relying on confounder-controlled quantitative microbial profiling, shotgun metagenomics and in vitro simulations of microorganism-microorganism and host-microorganism interactions. This step is crucial to enable the rational selection and monitoring of dietary and biotic intervention strategies that can be deployed as a personalized intervention in CKD.
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19
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Zheng L, Luo M, Zhou H, Chen J. Natural products from plants and microorganisms: Novel therapeutics for chronic kidney disease via gut microbiota regulation. Front Pharmacol 2023; 13:1068613. [PMID: 36733377 PMCID: PMC9887141 DOI: 10.3389/fphar.2022.1068613] [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: 10/13/2022] [Accepted: 12/23/2022] [Indexed: 01/18/2023] Open
Abstract
Dysbiosis of gut microbiota plays a fundamental role in the pathogenesis and development of chronic kidney disease (CKD) and its complications. Natural products from plants and microorganisms can achieve recognizable improvement in renal function and serve as an alternative treatment for chronic kidney disease patients with a long history, yet less is known on its beneficial effects on kidney injury by targeting the intestinal microbiota. In this review, we summarize studies on the effects of natural products from plants and microorganisms, including herbal medicines and their bioactive extracts, polysaccharides from plants and microorganisms, and phytochemicals, on the prevention and treatment of chronic kidney disease through targeting gut microflora. We describe the strategies of these anti-CKD effects in animal experiments including remodulation of gut microbiota structure, reduction of uremic toxins, enhancement of short-chain fatty acid (SCFA) production, regulation of intestinal inflammatory signaling, and improvement in intestinal integrity. Meanwhile, the clinical trials of different natural products in chronic kidney disease clinical practice were also analyzed and discussed. These provide information to enable a better understanding of the renoprotective effects of these effective natural products from plants and microorganisms in the treatment of chronic kidney disease. Finally, we propose the steps to prove the causal role of the intestinal microflora in the treatment of chronic kidney disease by natural products from plants and microorganisms. We also assess the future perspective that natural active products from plants and microorganisms can beneficially delay the onset and progression of kidney disease by targeting the gut flora and highlight the remaining challenges in this area. With the continuous deepening of studies in recent years, it has been proved that gut microbiota is a potential target of natural active products derived from plants and microorganisms for chronic kidney disease treatment. Fully understanding the functions and mechanisms of gut microbiota in these natural active products from plants and microorganisms is conducive to their application as an alternative therapeutic in the treatment of chronic kidney disease.
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Affiliation(s)
- Lin Zheng
- Shenzhen Key Laboratory of Hospital Chinese Medicine Preparation, Shenzhen Traditional Chinese Medicine Hospital, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Mingjing Luo
- Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China,CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institutes of Advanced Technology, Shenzhen, China
| | - Haokui Zhou
- Shenzhen Institute of Synthetic Biology, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China,CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institutes of Advanced Technology, Shenzhen, China
| | - Jianping Chen
- Shenzhen Key Laboratory of Hospital Chinese Medicine Preparation, Shenzhen Traditional Chinese Medicine Hospital, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, China,*Correspondence: Jianping Chen,
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20
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Peters BA, Qi Q, Usyk M, Daviglus ML, Cai J, Franceschini N, Lash JP, Gellman MD, Yu B, Boerwinkle E, Knight R, Burk RD, Kaplan RC. Association of the gut microbiome with kidney function and damage in the Hispanic Community Health Study/Study of Latinos (HCHS/SOL). Gut Microbes 2023; 15:2186685. [PMID: 36882941 PMCID: PMC10012940 DOI: 10.1080/19490976.2023.2186685] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 02/24/2023] [Indexed: 03/09/2023] Open
Abstract
BACKGROUND The gut microbiome is altered in chronic kidney disease (CKD), potentially contributing to CKD progression and co-morbidities, but population-based studies of the gut microbiome across a wide range of kidney function and damage are lacking. METHODS In the Hispanic Community Health Study/Study of Latinos, gut microbiome was assessed by shotgun sequencing of stool (n = 2,438; 292 with suspected CKD). We examined cross-sectional associations of estimated glomerular filtration rate (eGFR), urinary albumin:creatinine (UAC) ratio, and CKD with gut microbiome features. Kidney trait-related microbiome features were interrogated for correlation with serum metabolites (n = 700), and associations of microbiome-related serum metabolites with kidney trait progression were examined in a prospective analysis (n = 3,635). RESULTS Higher eGFR was associated with overall gut microbiome composition, greater abundance of species from Prevotella, Faecalibacterium, Roseburia, and Eubacterium, and microbial functions related to synthesis of long-chain fatty acids and carbamoyl-phosphate. Higher UAC ratio and CKD were related to lower gut microbiome diversity and altered overall microbiome composition only in participants without diabetes. Microbiome features related to better kidney health were associated with many serum metabolites (e.g., higher indolepropionate, beta-cryptoxanthin; lower imidazole propionate, deoxycholic acids, p-cresol glucuronide). Imidazole propionate, deoxycholic acid metabolites, and p-cresol glucuronide were associated with prospective reductions in eGFR and/or increases in UAC ratio over ~6 y. CONCLUSIONS Kidney function is a significant correlate of the gut microbiome, while the relationship of kidney damage with the gut microbiome depends on diabetes status. Gut microbiome metabolites may contribute to CKD progression.
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Affiliation(s)
- Brandilyn A. Peters
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Qibin Qi
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Mykhaylo Usyk
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Martha L. Daviglus
- Institute for Minority Health Research, University of Illinois at Chicago, Chicago, IL, USA
| | - Jianwen Cai
- Department of Biostatistics, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA
| | - Nora Franceschini
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA
| | - James P. Lash
- Department of Medicine, University of Illinois, Chicago, IL, USA
| | - Marc D. Gellman
- Department of Psychology, University of Miami, Miami, FL, USA
| | - Bing Yu
- Department of Epidemiology, Human Genetics, and Environmental Sciences, School of Public Health, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Eric Boerwinkle
- Department of Epidemiology, Human Genetics, and Environmental Sciences, School of Public Health, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Rob Knight
- Departments of Pediatrics, Computer Science and Engineering, Bioengineering, and Center for Microbiome Innovation, University of California San Diego, La Jolla, CA, USA
| | - Robert D. Burk
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
- Department of Microbiology and Immunology, Albert Einstein College of Medicine, Bronx, NY, USA
- Department of Obstetrics & Gynecology and Women’s Health, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Robert C. Kaplan
- Department of Epidemiology and Population Health, Albert Einstein College of Medicine, Bronx, NY, USA
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
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21
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Chen H, Wang J, Ouyang Q, Peng X, Yu Z, Wang J, Huang J. Alterations of gut microbes and their correlation with clinical features in middle and end-stages chronic kidney disease. Front Cell Infect Microbiol 2023; 13:1105366. [PMID: 37033494 PMCID: PMC10079997 DOI: 10.3389/fcimb.2023.1105366] [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: 11/22/2022] [Accepted: 03/07/2023] [Indexed: 04/11/2023] Open
Abstract
Gut microecosystem has been shown to play an important role in human health. In recent years, the concept of the gut-kidney axis has been proposed to explain the potential association between gut microbiota and chronic kidney disease (CKD). Here, a cohort of fecal samples collected from patients with CKD (n = 13) were involved. The composition of gut microbial communities and clinical features in CKD and end-stage renal disease (ESRD) were characterized. Our study focused on the changes in gut microbiome and the correlation with clinical features in patients with CKD and ESRD by analyzing high-throughput sequencing results of collected feces. We elucidated the alterations of gut microbiota in CKD patients at different stages of disease and initially identified the gut microbiota associated with CKD progression. We also combined correlation analysis to identify clinical features closely related to the gut microbiome. Our results offered the possibility of using non-invasive gut microbiome in the early diagnosis of course from CKD to ESRD and provide new insights into the association between clinical features and gut microbiota in CKD.
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Affiliation(s)
- Hao Chen
- Department of Parasitology, School of Basic Medical Science, Central South University, Changsha, China
| | - Jingyan Wang
- Department of Microbiology, School of Basic Medical Science, Central South University, Changsha, China
| | - Qin Ouyang
- Department of Nephrology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Xinyue Peng
- Department of Nephrology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Zheng Yu
- Department of Microbiology, School of Basic Medical Science, Central South University, Changsha, China
| | - Jianwen Wang
- Department of Nephrology, The Third Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Jing Huang, ; Jianwen Wang,
| | - Jing Huang
- Department of Parasitology, School of Basic Medical Science, Central South University, Changsha, China
- *Correspondence: Jing Huang, ; Jianwen Wang,
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22
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Shi X, Gao B, Srivastava A, Izzi Z, Abdalla Y, Shen W, Raj D. Alterations of gut microbial pathways and virulence factors in hemodialysis patients. Front Cell Infect Microbiol 2022; 12:904284. [PMID: 36093194 PMCID: PMC9461950 DOI: 10.3389/fcimb.2022.904284] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 07/04/2022] [Indexed: 11/13/2022] Open
Abstract
Alterations in gut microbiota might contribute to uremic toxicity and immune dysregulation in patients with end-stage renal disease. Hemodialysis patients are prone to infection and higher mortality following sepsis. The virulence factors in the gut metagenome have not been well studied in hemodialysis patients, which could be employed by microorganisms to successfully thrive and flourish in their hosts. In this study, we performed shotgun metagenomics sequencing on fecal DNA collected from 16 control subjects and 24 hemodialysis patients. Our analysis shows that a number of microbial species, metabolic pathways, antibiotic resistance, and virulence factors were significantly altered in hemodialysis patients compared with controls. In particular, erythromycin resistance methylase, pyridoxamine 5-phosphate oxidase, and streptothricin-acetyl-transferase were significantly increased in hemodialysis patients. The findings in our study laid a valuable foundation to further elucidate the causative role of virulence factors in predisposing HD patients to infection and to develop treatment strategies to reduce the genetic capacities of antibiotic resistance and virulence factors in HD patients.
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Affiliation(s)
- Xiaochun Shi
- Department of Environmental Ecological Engineering, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, China
| | - Bei Gao
- School of Marine Sciences, Nanjing University of Information Science and Technology, Nanjing, China
| | - Anvesha Srivastava
- Division of Kidney Diseases and Hypertension, George Washington University School of Medicine, Washington, DC, United States
| | - Zahra Izzi
- Langley High School, McLean, VA, United States
| | - Yoosif Abdalla
- Division of Kidney Diseases and Hypertension, George Washington University School of Medicine, Washington, DC, United States
| | - Weishou Shen
- Department of Environmental Ecological Engineering, School of Environmental Science and Engineering, Nanjing University of Information Science and Technology, Nanjing, China
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, Collaborative In-novation Center of Atmospheric Environment and Equipment Technology, Nanjing, China
- *Correspondence: Weishou Shen,
| | - Dominic Raj
- Division of Kidney Diseases and Hypertension, George Washington University School of Medicine, Washington, DC, United States
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23
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Koppe L, Soulage CO. The impact of dietary nutrient intake on gut microbiota in the progression and complications of chronic kidney disease. Kidney Int 2022; 102:728-739. [PMID: 35870642 DOI: 10.1016/j.kint.2022.06.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Revised: 06/02/2022] [Accepted: 06/10/2022] [Indexed: 11/29/2022]
Abstract
Chronic kidney disease (CKD) has been associated with changes in the function and composition of the gut microbiota. The ecosystem of the human gut consists of trillions of microorganisms forming an authentic metabolically active organ that is fueled by nutrients to produce bioactive compounds. These microbiota-derived metabolites may be protective for kidney function (e.g. short-chain fatty acids from fermentation of dietary fibers) or deleterious (e.g. gut-derived uremic toxins such as trimethylamine N-oxide, p-cresyl sulfate, and indoxyl sulfate from fermentation of amino acids). Although diet is the cornerstone of the management of the patient with CKD, it remains a relatively underused component of the clinician's armamentarium. In this review, we describe the latest advances in understanding diet-microbiota crosstalk in a uremic context, and how this communication might contribute to CKD progression and complications. We then discuss how this knowledge could be harnessed for personalized nutrition strategies to prevent patients with CKD progressing to end-stage kidney disease and its detrimental consequences.
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Affiliation(s)
- Laetitia Koppe
- Department of Nephrology, Hospices Civils de Lyon, Centre Hospitalier Lyon-Sud, F-69495 Pierre-Bénite, France; Univ. Lyon, CarMeN lab, INSA-Lyon, INSERM U1060, INRA, Université Claude Bernard Lyon 1, F-69621 Villeurbanne, France.
| | - Christophe O Soulage
- Univ. Lyon, CarMeN lab, INSA-Lyon, INSERM U1060, INRA, Université Claude Bernard Lyon 1, F-69621 Villeurbanne, France
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24
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Abstract
Chronic kidney disease (CKD) is a worldwide public health issue and has ultimately progressed to an end-stage renal disease that requires life-long dialysis or renal transplantation. However, the underlying molecular mechanism of these pathological development and progression remains to be fully understood. The human gut microbiota is made up of approximately 100 trillion microbial cells including anaerobic and aerobic species. In recent years, more and more evidence has indicated a clear association between dysbiosis of gut microbiota and CKD including immunoglobulin A (IgA) nephropathy, diabetic kidney disease, membranous nephropathy, chronic renal failure and end-stage renal disease. The current review describes gut microbial dysbiosis and metabolites in patients with CKD thus helping to understand human disease. Treatment with prebiotics, probiotics and natural products can attenuate CKD through improving dysbiosis of gut microbiota, indicating a novel intervention strategy in patients with CKD. This review also discusses therapeutic options, such as prebiotics, probiotics and natural products, for targeting dysbiosis of gut microbiota in patients to provide more specific concept-driven therapy strategy for CKD treatment.
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Affiliation(s)
- Ying-Yong Zhao
- Faculty of Life Science & Medicine, Northwest University, Xi’an 710069, Shaanxi, China
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25
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The Microbiome and Uremic Solutes. Toxins (Basel) 2022; 14:toxins14040245. [PMID: 35448854 PMCID: PMC9033124 DOI: 10.3390/toxins14040245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Revised: 03/07/2022] [Accepted: 03/23/2022] [Indexed: 02/05/2023] Open
Abstract
Uremic retention solutes, especially the protein-bound compounds, are toxic metabolites, difficult to eliminate with progressive renal functional decline. They are of particular interest because these uremic solutes are responsible for the pathogenesis of cardiovascular and chronic kidney diseases. Evidence suggests that the relation between uremic toxins, the microbiome, and its host is altered in patients with chronic kidney disease, with the colon’s motility, epithelial integrity, and absorptive properties also playing an important role. Studies found an alteration of the microbiota composition with differences in species proportion, diversity, and function. Since uremic toxins precursors are generated by the microbiota, multiple therapeutic options are currently being explored to address dysbiosis. While an oral adsorbent can decrease the transport of bacterial metabolites from the intestinal lumen to the blood, dietary measures, supplements (prebiotics, probiotics, and synbiotics), and antibiotics aim to target directly the gut microbiota composition. Innovative approaches, such as the modulation of bacterial enzymes, open new perspectives to decrease the plasma level of uremic toxins.
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26
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Li P, Chen G, Zhang J, Pei C, Chen Y, Gong J, Deng S, Cai K, Li H, Wang D, Shen B, Xie Z, Liao Q. Live Lactobacillus acidophilus alleviates ulcerative colitis via the SCFAs/mitophagy/NLRP3 inflammasome axis. Food Funct 2022; 13:2985-2997. [PMID: 35195119 DOI: 10.1039/d1fo03360c] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
As a disease caused by an impaired intestinal epithelial barrier, imbalanced flora, immune imbalance and genetic susceptibility, ulcerative colitis (UC) is becoming a health threat for all ages. Lactobacillus acidophilus (L. acidophilus), an attracting probiotic, has already been confirmed to improve immune dysfunction, stabilize intestinal microflora, and combat gut disorders. However, no studies have focused on the effects of different forms of L. acidophilus on UC, and its mechanism involved in the mitophagy/NLRP3 inflammasome pathway has not been reported. In this study, we found that compared with the heat-killed L. acidophilus and the culture supernatant of L. acidophilus, the live L. acidophilus (La) has the optimal therapeutic effect on UC rats. Furthermore, La evidently increased the contents of SCFAs, inhibited NLRP3 inflammasome and facilitated autophagy. SCFAs regulated by La balanced inflammation homeostasis and improved intestinal barrier dysfunctions in vitro and in vivo, which was achieved by activating the mitophagy/NLRP3 inflammasome pathway. Moreover, PCR analysis indicated that the aforementioned effects of SCFAs regulated by La may be due to the activation of G protein-coupled receptors. These findings provided guidance for the application of L. acidophilus in daily life and provided a new molecular target for interactions among L. acidophilus, its metabolites and host immunity.
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Affiliation(s)
- Pei Li
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
| | - Guoping Chen
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
| | - Jiaxian Zhang
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
| | - Chaoying Pei
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
| | - Ying Chen
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
| | - Jing Gong
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
| | - Song Deng
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
| | - Kaiwei Cai
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
| | - Haiyan Li
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
| | - Dawei Wang
- ShunDe Hospital GuangZhou University of Chinese Medicine, Foshan, 528300, China
| | - Baochun Shen
- School of Pharmacy, Kunming Medical University, Kunming, 650500, China
| | - Zhiyong Xie
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Guangzhou, 510006, China.
| | - Qiongfeng Liao
- School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou, 510006, China.
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27
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Alterations in Gut Microbiome Composition and Function in Irritable Bowel Syndrome and Increased Probiotic Abundance with Daily Supplementation. mSystems 2021; 6:e0121521. [PMID: 34726487 PMCID: PMC8562475 DOI: 10.1128/msystems.01215-21] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Irritable bowel syndrome (IBS) is characterized by abdominal discomfort and irregular bowel movements and stool consistency. As such, the gut microbiome has been posited as being influential for the syndrome. However, identifying microbial features associated with IBS symptom heterogeneity is difficult without large cohorts. Our aim was to identify microbial features associated with IBS and IBS subtypes compared to healthy controls and to determine if a synbiotic supplementation intervention could decrease the proportion of those microbial features. Stool samples from 490 individuals with IBS (including all dominant subtypes) and 122 individuals without IBS were analyzed with metagenomic sequencing. One hundred thirty-four IBS subjects were followed over time while receiving daily synbiotic supplementation, the composition of which varied between participants. IBS participants had significantly lower alpha diversity, an enrichment in Gram-negative bacteria, and a reduction in pathways associated with short-chain fatty acid and vitamin synthesis. Shigella species were significantly associated with IBS, while Eubacterium rectale and Faecalibacterium prausnitzii were associated with healthy controls. Random forest identified unique and overlapping microbial features associated with each IBS subtype. Longitudinal assessment of 134 IBS subjects receiving synbiotic supplements demonstrated a significant difference in microbial features and an increase in probiotic abundance across time. We identified microbial features that differentiate healthy and IBS subtypes. Synbiotic supplementation in IBS subjects did not result in alpha diversity change in the microbiome but did demonstrate changes in microbial features. Future work is needed to determine if the observed microbiome changes are associated with IBS symptom improvement. IMPORTANCE An estimated 35 million people in the United States and 11.5% of the population globally are affected by IBS. Immunity, genetics, environment, diet, small intestinal bacterial overgrowth (SIBO), and the gut microbiome are all factors that contribute to the onset or triggers of IBS. With strong supporting evidence that the gut microbiome may influence symptoms associated with IBS, elucidating the important microbes that contribute to the symptoms and severity is important to make decisions for targeted treatment. As probiotics have become more common in treating IBS symptoms, identifying effective probiotics may help inform future studies and treatment.
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28
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Gryp T, Faust K, Van Biesen W, Huys GRB, Verbeke F, Speeckaert M, Raes J, Vaneechoutte M, Joossens M, Glorieux G. Gut Microbiome Profiling Uncovers a Lower Abundance of Butyricicoccus in Advanced Stages of Chronic Kidney Disease. J Pers Med 2021; 11:jpm11111118. [PMID: 34834470 PMCID: PMC8621827 DOI: 10.3390/jpm11111118] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 10/25/2021] [Accepted: 10/28/2021] [Indexed: 12/14/2022] Open
Abstract
Chronic kidney disease (CKD) is characterized by the accumulation of uremic toxins which exert deleterious effects on various organ systems. Several of these uremic toxins originate from the bacterial metabolization of aromatic amino acids in the colon. This study assessed whether the gut microbial composition varies among patients in different stages of CKD. Uremic metabolites were quantified by UPLC/fluorescence detection and microbial profiling by 16S rRNA amplicon sequencing. Gut microbial profiles of CKD patients were compared among stages 1–2, stage 3 and stages 4–5. Although a substantial inter-individual difference in abundance of the top 15 genera was observed, no significant difference was observed between groups. Bristol stool scale (BSS) correlated negatively with p-cresyl sulfate and hippuric acid levels, irrespective of the intake of laxatives. Butyricicoccus, a genus with butyrate-generating properties, was decreased in abundance in advanced stages of CKD compared to the earlier stages (p = 0.043). In conclusion, in this cross-sectional study no gradual differences in the gut microbial profile over the different stages of CKD were observed. However, the decrease in the abundance of Butyricicoccus genus with loss of kidney function stresses the need for more in-depth functional exploration of the gut microbiome in CKD patients not on dialysis.
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Affiliation(s)
- Tessa Gryp
- Department of Internal Medicine and Pediatrics, Nephrology Section, Ghent University Hospital, 9000 Ghent, Belgium; (T.G.); (W.V.B.); (F.V.); (M.S.)
- Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, 3000 Leuven, Belgium; (K.F.); (G.R.B.H.); (J.R.); (M.J.)
- Laboratory Bacteriology Research, Department of Diagnostic Sciences, Ghent University, 9000 Ghent, Belgium
| | - Karoline Faust
- Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, 3000 Leuven, Belgium; (K.F.); (G.R.B.H.); (J.R.); (M.J.)
| | - Wim Van Biesen
- Department of Internal Medicine and Pediatrics, Nephrology Section, Ghent University Hospital, 9000 Ghent, Belgium; (T.G.); (W.V.B.); (F.V.); (M.S.)
| | - Geert R. B. Huys
- Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, 3000 Leuven, Belgium; (K.F.); (G.R.B.H.); (J.R.); (M.J.)
- Center for Microbiology, VIB, 3001 Leuven, Belgium;
| | - Francis Verbeke
- Department of Internal Medicine and Pediatrics, Nephrology Section, Ghent University Hospital, 9000 Ghent, Belgium; (T.G.); (W.V.B.); (F.V.); (M.S.)
| | - Marijn Speeckaert
- Department of Internal Medicine and Pediatrics, Nephrology Section, Ghent University Hospital, 9000 Ghent, Belgium; (T.G.); (W.V.B.); (F.V.); (M.S.)
| | - Jeroen Raes
- Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, 3000 Leuven, Belgium; (K.F.); (G.R.B.H.); (J.R.); (M.J.)
- Center for Microbiology, VIB, 3001 Leuven, Belgium;
| | | | - Marie Joossens
- Department of Microbiology, Immunology and Transplantation, Rega Institute, KU Leuven, 3000 Leuven, Belgium; (K.F.); (G.R.B.H.); (J.R.); (M.J.)
- Laboratory of Microbiology, Department of Biochemistry and Microbiology, Ghent University, 9000 Ghent, Belgium
| | - Griet Glorieux
- Department of Internal Medicine and Pediatrics, Nephrology Section, Ghent University Hospital, 9000 Ghent, Belgium; (T.G.); (W.V.B.); (F.V.); (M.S.)
- Correspondence: ; Tel.: +32-93-324-511
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