1
|
Yin Y, Shan C, Han Q, Chen C, Wang Z, Huang Z, Chen H, Sun L, Fei S, Tao J, Han Z, Tan R, Gu M, Ju X. Causal effects of human serum metabolites on occurrence and progress indicators of chronic kidney disease: a two-sample Mendelian randomization study. Front Nutr 2024; 10:1274078. [PMID: 38260086 PMCID: PMC10800733 DOI: 10.3389/fnut.2023.1274078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 12/18/2023] [Indexed: 01/24/2024] Open
Abstract
Background Chronic kidney disease (CKD) is often accompanied by alterations in the metabolic profile of the body, yet the causative role of these metabolic changes in the onset of CKD remains a subject of ongoing debate. This study investigates the causative links between metabolites and CKD by leveraging the results of genomewide association study (GWAS) from 486 blood metabolites, employing bulk two-sample Mendelian randomization (MR) analyses. Building on the metabolites that exhibit a causal relationship with CKD, we delve deeper using enrichment analysis to identify the metabolic pathways that may contribute to the development and progression of CKD. Methods In conducting the Mendelian randomization analysis, we treated the GWAS data for 486 metabolic traits as exposure variables while using GWAS data for estimated glomerular filtration rate based on serum creatinine (eGFRcrea), microalbuminuria, and the urinary albumin-to-creatinine ratio (UACR) sourced from the CKDGen consortium as the outcome variables. Inverse-variance weighting (IVW) analysis was used to identify metabolites with a causal relationship to outcome. Using Bonferroni correction, metabolites with more robust causal relationships are screened. Additionally, the IVW-positive results were supplemented with the weighted median, MR-Egger, weighted mode, and simple mode. Furthermore, we performed sensitivity analyses using the Cochran Q test, MR-Egger intercept test, MR-PRESSO, and leave-one-out (LOO) test. Pathway enrichment analysis was conducted using two databases, KEGG and SMPDB, for eligible metabolites. Results During the batch Mendelian randomization (MR) analyses, upon completion of the inverse-variance weighted (IVW) approach, sensitivity analysis, and directional consistency checks, 78 metabolites were found to meet the criteria. The following four metabolites satisfy Bonferroni correction: mannose, N-acetylornithine, glycine, and bilirubin (Z, Z), and mannose is causally related to all outcomes of CKD. By pathway enrichment analysis, we identified eight metabolic pathways that contribute to CKD occurrence and progression. Conclusion Based on the present analysis, mannose met Bonferroni correction and had causal associations with CKD, eGFRcrea, microalbuminuria, and UACR. As a potential target for CKD diagnosis and treatment, mannose is believed to play an important role in the occurrence and development of CKD.
Collapse
Affiliation(s)
- Yu Yin
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Conghui Shan
- Department of Clinical Laboratory, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Qianguang Han
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Congcong Chen
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Zijie Wang
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Zhengkai Huang
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Hao Chen
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Li Sun
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Shuang Fei
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Jun Tao
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Zhijian Han
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Ruoyun Tan
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Min Gu
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
- Department of Urology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xiaobing Ju
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| |
Collapse
|
2
|
Liu M, Nieuwdorp M, de Vos WM, Rampanelli E. Microbial Tryptophan Metabolism Tunes Host Immunity, Metabolism, and Extraintestinal Disorders. Metabolites 2022; 12:834. [PMID: 36144238 DOI: 10.3390/metabo12090834] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 08/29/2022] [Accepted: 08/31/2022] [Indexed: 11/17/2022] Open
Abstract
The trillions of commensal microorganisms comprising the gut microbiota have received growing attention owing to their impact on host physiology. Recent advances in our understandings of the host–microbiota crosstalk support a pivotal role of microbiota-derived metabolites in various physiological processes, as they serve as messengers in the complex dialogue between commensals and host immune and endocrine cells. In this review, we highlight the importance of tryptophan-derived metabolites in host physiology, and summarize the recent findings on the role of tryptophan catabolites in preserving intestinal homeostasis and fine-tuning immune and metabolic responses. Furthermore, we discuss the latest evidence on the effects of microbial tryptophan catabolites, describe their mechanisms of action, and discuss how perturbations of microbial tryptophan metabolism may affect the course of intestinal and extraintestinal disorders, including inflammatory bowel diseases, metabolic disorders, chronic kidney diseases, and cardiovascular diseases.
Collapse
|
3
|
Arias N, Arboleya S, Allison J, Kaliszewska A, Higarza SG, Gueimonde M, Arias JL. The Relationship between Choline Bioavailability from Diet, Intestinal Microbiota Composition, and Its Modulation of Human Diseases. Nutrients 2020; 12:nu12082340. [PMID: 32764281 PMCID: PMC7468957 DOI: 10.3390/nu12082340] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 07/28/2020] [Accepted: 07/30/2020] [Indexed: 02/06/2023] Open
Abstract
Choline is a water-soluble nutrient essential for human life. Gut microbial metabolism of choline results in the production of trimethylamine (TMA), which, upon absorption by the host is converted into trimethylamine-N-oxide (TMAO) in the liver. A high accumulation of both components is related to cardiovascular disease, inflammatory bowel disease, non-alcoholic fatty liver disease, and chronic kidney disease. However, the relationship between the microbiota production of these components and its impact on these diseases still remains unknown. In this review, we will address which microbes contribute to TMA production in the human gut, the extent to which host factors (e.g., the genotype) and diet affect TMA production, and the colonization of these microbes and the reversal of dysbiosis as a therapy for these diseases.
Collapse
Affiliation(s)
- Natalia Arias
- Instituto de Neurociencias del Principado de Asturias (INEUROPA), 33003 Oviedo, Asturias, Spain; (S.G.H.); (J.L.A.)
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, Denmark Hill, London SE5 8AF, UK; (J.A.); (A.K.)
- Correspondence:
| | - Silvia Arboleya
- Department of Microbiology and Biochemistry of Dairy Products, Instituto de Productos Lácteos de Asturias (IPLA-CSIC), 33003 Oviedo, Asturias, Spain; (S.A.); (M.G.)
| | - Joseph Allison
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, Denmark Hill, London SE5 8AF, UK; (J.A.); (A.K.)
| | - Aleksandra Kaliszewska
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, Denmark Hill, London SE5 8AF, UK; (J.A.); (A.K.)
| | - Sara G. Higarza
- Instituto de Neurociencias del Principado de Asturias (INEUROPA), 33003 Oviedo, Asturias, Spain; (S.G.H.); (J.L.A.)
- Laboratory of Neuroscience, Department of Psychology, University of Oviedo, Plaza Feijóo, s/n, 33003 Oviedo, Asturias, Spain
| | - Miguel Gueimonde
- Department of Microbiology and Biochemistry of Dairy Products, Instituto de Productos Lácteos de Asturias (IPLA-CSIC), 33003 Oviedo, Asturias, Spain; (S.A.); (M.G.)
| | - Jorge L. Arias
- Instituto de Neurociencias del Principado de Asturias (INEUROPA), 33003 Oviedo, Asturias, Spain; (S.G.H.); (J.L.A.)
- Laboratory of Neuroscience, Department of Psychology, University of Oviedo, Plaza Feijóo, s/n, 33003 Oviedo, Asturias, Spain
| |
Collapse
|
4
|
Zhao X, Luo G, Fan Y, Ma X, Zhou J, Jiang H. ILEI is an important intermediate participating in the formation of TGF-β1-induced renal tubular EMT. Cell Biochem Funct 2018; 36:46-55. [PMID: 29336056 DOI: 10.1002/cbf.3316] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 11/23/2017] [Accepted: 12/05/2017] [Indexed: 11/06/2022]
Abstract
Renal interstitial fibrosis is the most common process by which chronic kidney diseases progress to end-stage renal failure. Epithelial-to-mesenchymal transitions (EMTs) play a crucial role in the progression of renal interstitial fibrosis. A newly identified cytokine, interleukin-like EMT inducer (ILEI), has been linked to EMT in some diseases. However, the effects of ILEI on renal tubular EMT have not yet been well established. Here, we characterize the expression of ILEI in tubular EMT and describe the role and mechanism of ILEI in transforming growth factor beta 1 (TGF-β1)-induced renal tubular EMT. The results indicate that ILEI is involved in renal tubular EMT induced by TGF-β1, as overexpression of ILEI not only induces EMT of HK-2 cells independently but also profoundly enhances EMT in response to TGF-β1. Supporting this finding, ILEI small interfering RNA was found to block the EMT of HK-2 cells induced by TGF-β1. This work additionally suggests ILEI mediates TGF-β1-dependent EMT via the extracellular regulated protein kinases (ERKs) and protein kinase B (Akt) signalling pathways. In conclusion, ILEI appears to play a crucial role in mediating TGF-β1-induced EMT through the Akt and ERK pathways, which may provide a therapeutic target for the treatment of fibrotic kidney diseases. SIGNIFICANCE OF THE STUDY There is no study reporting the effect of ILEI in renal EMTs. In this research, we examined the role and mechanism of ILEI in EMT using tubular epithelial cell; we found that ILEI participated in renal tubular EMT, and overexpression of ILEI can not only induce EMT of HK-2 cells independently but also enhance EMT in response to TGF-β1. Meanwhile, we found ILEI small interfering RNA blocked the EMT induced by TGF-β1, and ILEI participates in the EMT caused by TGF-β1 via ERK and Akt signalling pathways. We hoped to provide new ideas in further study on the prevention and treatment of fibrotic kidney diseases.
Collapse
Affiliation(s)
- Xing Zhao
- Department of Pediatrics, First Hospital of China Medical University, Shenyang City, 110001, China
| | - Gang Luo
- Department of Pediatrics, First Hospital of China Medical University, Shenyang City, 110001, China
| | - Yan Fan
- Department of Pediatrics, First Hospital of China Medical University, Shenyang City, 110001, China
| | - Xiaoxue Ma
- Department of Pediatrics, First Hospital of China Medical University, Shenyang City, 110001, China
| | - Jieqing Zhou
- Department of Pediatrics, First Hospital of China Medical University, Shenyang City, 110001, China
| | - Hong Jiang
- Department of Pediatrics, First Hospital of China Medical University, Shenyang City, 110001, China
| |
Collapse
|