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Haghshenas L, Banihashemi S, Malekzadegan Y, Catanzaro R, Moghadam Ahmadi A, Marotta F. Microbiome as an endocrine organ and its relationship with eye diseases: Effective factors and new targeted approaches. World J Gastrointest Pathophysiol 2024; 15:96446. [PMID: 39355345 PMCID: PMC11440246 DOI: 10.4291/wjgp.v15.i5.96446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2024] [Revised: 09/04/2024] [Accepted: 09/13/2024] [Indexed: 09/20/2024] Open
Abstract
Microbiome is an endocrine organ that refers to both the complicated biological system of microbial species that colonize our bodies and their genomes and surroundings. Recent studies confirm the connection between the microbiome and eye diseases, which are involved in the pathogenesis of eye diseases, including age-related macular disorders, diabetic retinopathy, glaucoma, retinitis pigmentosa, dry eye, and uveitis. The aim of this review is to investigate the microbiome in relation to eye health. First, a brief introduction of the characteristics of the gut microorganisms terms of composition and work, the role of dysbiosis, the gut microbiome and the eye microbiome in the progression of eye illnesses are highlighted, then the relationship among the microbiome and the function of the immune system and eye diseases, the role of inflammation and aging and the immune system, It has been reviewed and finally, the control and treatment goals of microbiome and eye diseases, the role of food factors and supplements, biotherapy and antibiotics in relation to microbiome and eye health have been reviewed.
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Affiliation(s)
- Leila Haghshenas
- Department of Clinical Bioinformatics, Harvard Medical School, Boston, MA 02115, United States
| | - Sara Banihashemi
- Department of Bioscience, School of Science and Technology, Nottingham Trend University, Nottingham NG1 4FQ, United Kingdom
| | - Yalda Malekzadegan
- Department of Microbiology, Saveh University of Medical Sciences, Saveh 3919676651, Iran
| | - Roberto Catanzaro
- Department of Clinical and Experimental Medicine, University of Catania, Catania 95123, Catania, Italy
| | - Amir Moghadam Ahmadi
- Department of Neuroimmunology, Thomas Jefferson University Hospital, Philadelphia, PA 19107, United States
| | - Francesco Marotta
- Department of Human Nutrition and Food Sciences, Texas Women University, Milano 20154, Italy
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Xu M, Hao J, Qi Y, Wu B, Li R, Yang X, Zhang Y, Liu Y. Causal effects of gut microbiota on diabetic neuropathy: a two-sample Mendelian randomization study. Front Endocrinol (Lausanne) 2024; 15:1388927. [PMID: 39157679 PMCID: PMC11329939 DOI: 10.3389/fendo.2024.1388927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 07/17/2024] [Indexed: 08/20/2024] Open
Abstract
Objective Previous observational studies have suggested an association between gut microbiota and diabetic neuropathy (DN). However, confounding factors and reverse causality make the causal relationship between gut microbiota and DN uncertain. We aimed to investigate the interactive causal relationships between the abundance of gut microbiota and DN. Methods We conducted a Mendelian randomization (MR) analysis to examine the causal relationship between gut microbiota and DN. Genomic data on gut microbiota at the genus level were obtained from the MiBioGen Consortium, including 18,340 individuals of European descent. Data on diabetic polyneuropathy (DPN) were obtained from the FinnGen Consortium, which included 1,048 cases and 374,434 controls, while data on diabetic autonomic neuropathy (DAN) were also obtained from the FinnGen Consortium, including 111 cases and 374,434 controls. Causal effects were primarily estimated using inverse variance weighted (IVW) analysis, supplemented with four validation methods, and additional sensitivity analyses to assess the pleiotropy, heterogeneity, and robustness of instrumental variables. Results The IVW analysis indicated that Prevotella 9 had a protective effect on DPN (OR = 0.715, 95% CI: 0.521-0.982, P = 0.038), and Bacteroides also showed a protective effect (OR = 0.602, 95% CI: 0.364-0.996, P = 0.048). On the other hand, Ruminococcus 2 had a promoting effect on DPN (OR = 1.449, 95% CI: 1.008-2.083, P = 0.045). Blautia (OR = 0.161, 95% CI: 0.035-0.733, P = 0.018), Clostridium innocuum group (OR = 3.033, 95% CI: 1.379-6.672, P = 0.006), and Howardella (OR = 2.595, 95% CI: 1.074-6.269, P = 0.034) were causally associated with DAN in the IVW analysis, with no evidence of heterogeneity or pleiotropy. Sensitivity analyses showed no significant pleiotropy or heterogeneity. Conclusion Our study identified a causal relationship between gut microbiota and the increased or decreased risk of diabetic neuropathy. These findings underscore the importance of adopting a comprehensive approach that combines gut microbiota modulation with other therapeutic interventions in the management of diabetic neuropathy.
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Affiliation(s)
- Ming Xu
- Department of Endocrinology, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
- The First Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Jinxuan Hao
- Department of Endocrinology, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
- The First Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Yijie Qi
- Department of Endocrinology, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
- The First Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Baofeng Wu
- Department of Endocrinology, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
- The First Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Ru Li
- Department of Endocrinology, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
- The First Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Xifeng Yang
- Department of Endocrinology, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
- The First Clinical Medical College, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Yi Zhang
- Department of Pharmacology, School of Basic Medicine, Shanxi Medical University, Taiyuan, Shanxi, China
- Medicinal Basic Research Innovation Center of Chronic Kidney Disease, Ministry of Education, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Yunfeng Liu
- Department of Endocrinology, First Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
- Medicinal Basic Research Innovation Center of Chronic Kidney Disease, Ministry of Education, Shanxi Medical University, Taiyuan, Shanxi, China
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Xie L, Gan W, Cai G. The causal relationship between gut microbiota and diabetic neuropathy: a bi-directional two-sample Mendelian randomization study. Front Endocrinol (Lausanne) 2024; 15:1402014. [PMID: 39050567 PMCID: PMC11266094 DOI: 10.3389/fendo.2024.1402014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2024] [Accepted: 06/26/2024] [Indexed: 07/27/2024] Open
Abstract
Background Many studies suggest a strong correlation between gut microbiota (GM) and diabetic neuropathy (DN). However, the precise causal relationship between GM and DN has yet to be fully elucidated. Hence, a bi-directional Mendelian randomization (MR) analysis was used to examine the association between GM and DN. Methods Widely known genome-wide association study (GWAS) of GM was collected from the MiBio Gen project. Summary-level datasets for DN were taken from the FinnGen project. Inverse variance weighted approach was used for evaluating the causal relationship between GM and DN. Subsequently, pleiotropy and heterogeneity tests were performed to verify the reliability of the data. Furthermore, a bidirectional two-sample MR analysis was done to investigate the directionality of the causal relationships. Gene Ontology analysis was conducted to identify the associations that could indicate biological functions. Results We identified potential causal associations between GM and DN (p< 0.05 in all three MR methods). Among them, we found increased levels of Christensenellaceae R-7 (Odds ratio, OR= 1.52; 95% confidence interval, CI = 1.03-2.23; p = 0.03), Ruminococcaceae UCG013 (OR =1.35; 95% CI = 1.00-1.85; p = 0.04), and Eggerthella groups (OR = 1.27; 95% CI = 1.05-1.55; p = 0.01), which may be associated with a higher risk of DN, while increased levels of Peptococcaceae (OR = 0.69; 95% CI = 0.54-0.90; p< 0.01) and Eubacterium coprostanoligenes groups (OR = 0.68; 95% CI = 0.49-0.93; p = 0.01) could be associated with a lower risk. Gene Ontology pathway analysis revealed enrichment of genes regulated by the associated single-nucleotide polymorphisms (SNPs) in the apical plasma membrane, glycosyltransferase activity, hexosyltransferase activity and membrane raft. Reverse MR analyses indicated that DN was associated with five microbial taxa in all three MR methods. Conclusion The results of our study validate the possible causative relationship between GM and DN. This discovery gives new perspectives into the mechanism on how GM influences DN, and establishes a theoretical foundation for future investigations into targeted preventive measures.
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Affiliation(s)
- Long Xie
- Department of Orthopedics, The Fourth Hospital of Changsha (The Changsha Affiliated Hospital of Hunan Normal University), Hunan Normal University, Changsha, China
| | - Wen Gan
- Department of Thoracic Surgery, Yuebei People’s Hospital, Shaoguan, Guangdong, China
| | - GuangRong Cai
- Trauma Department of Orthopaedics, Yuebei People’s Hospital, Shaoguan, Guangdong, China
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Napoli TF, Cortez RV, Sparvoli LG, Taddei CR, Salles JEN. Unveiling contrasts in microbiota response: A1c control improves dysbiosis in low-A1c T2DM, but fails in high-A1c cases-a key to metabolic memory? BMJ Open Diabetes Res Care 2024; 12:e003964. [PMID: 38937275 PMCID: PMC11216069 DOI: 10.1136/bmjdrc-2023-003964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 05/23/2024] [Indexed: 06/29/2024] Open
Abstract
INTRODUCTION Type 2 diabetes mellitus (T2DM) is associated with dysbiosis in the gut microbiota (MB). Individually, each medication appears to partially correct this. However, there are no studies on the response of the MB to changes in A1c. Therefore, we investigated the MB's response to intensive glycemic control. RESEARCH DESIGN AND METHODS We studied two groups of patients with uncontrolled T2DM, one group with an A1c <9% (18 patients-G1) and another group with an A1c >9% (13 patients-G2), aiming for at least a 1% reduction in A1c. We collected A1c and fecal samples at baseline, 6, and 12 months. G1 achieved an average A1c reduction of 1.1%, while G2 a reduction of 3.13%. RESULTS G1's microbiota saw a decrease in Erysipelotrichaceae_UCG_003 and in Mollicutes order (both linked to metabolic syndrome and associated comorbidities). G2, despite having a more significant reduction in A1c, experienced an increase in the proinflammatory bacteria Megasphaera and Acidaminococcus, and only one beneficial genus, Phascolarctobacterium, increased, producer of butyrate. CONCLUSION Despite a notable A1c outcome, G2 could not restore its MB. This seeming resistance to change, leading to a persistent inflammation component found in G2, might be part of the "metabolic memory" in T2DM.
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Affiliation(s)
- Thiago Fraga Napoli
- Serviço de Endocrinologia e Metabologia, Hospital Servidor Público Estadual de São Paulo, São Paulo, São Paulo, Brazil
- Departamento de Clínica Médica, Disciplina de Endocrinologia, Faculdade de Ciências Médicas da Santa Casa de São Paulo, São Paulo, Brazil
| | - Ramon V Cortez
- Department of Clinical Analysis and Toxicology, University of Sao Paulo, Sao Paulo, Brazil
| | - Luiz Gustavo Sparvoli
- Department of Clinical Analysis and Toxicology, University of Sao Paulo, Sao Paulo, Brazil
| | - Carla R Taddei
- Department of Clinical Analysis and Toxicology, University of Sao Paulo, Sao Paulo, Brazil
| | - Joao Eduardo Nunes Salles
- Departamento de Clínica Médica, Disciplina de Endocrinologia, Faculdade de Ciências Médicas da Santa Casa de São Paulo, São Paulo, Brazil
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Vigano M, Kubal S, Lu Y, Habib S, Samarani S, Cama G, Viau C, Farzin H, Koudieh N, Xia J, Ahmad A, Vigano A, Costiniuk CT. Impact of Cannabidiol and Exercise on Clinical Outcomes and Gut Microbiota for Chemotherapy-Induced Peripheral Neuropathy in Cancer Survivors: A Case Report. Pharmaceuticals (Basel) 2024; 17:834. [PMID: 39065685 PMCID: PMC11279394 DOI: 10.3390/ph17070834] [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: 05/16/2024] [Revised: 06/12/2024] [Accepted: 06/18/2024] [Indexed: 07/28/2024] Open
Abstract
Chemotherapy-induced peripheral neuropathy (CIPN) remains a clinical challenge for up to 80% of breast cancer survivors. In an open-label study, participants underwent three interventions: standard care (duloxetine) for 1 month (Phase 1), oral cannabidiol (CBD) for 2 months (Phase 2), and CBD plus multi-modal exercise (MME) for another 2 months (Phase 3). Clinical outcomes and gut microbiota composition were assessed at baseline and after each phase. We present the case of a 52-year-old female with a history of triple-negative breast cancer in remission for over five years presenting with CIPN. She showed decreased monocyte counts, c-reactive protein, and systemic inflammatory index after each phase. Duloxetine provided moderate benefits and intolerable side effects (hyperhidrosis). She experienced the best improvement and least side effects with the combined (CBD plus MME) phase. Noteworthy were clinically meaningful improvements in CIPN symptoms, quality of life (QoL), and perceived physical function, as well as improvements in pain, mobility, hand/finger dexterity, and upper and lower body strength. CBD and MME altered gut microbiota, showing enrichment of genera that produce short-chain fatty acids. CBD and MME may improve CIPN symptoms, QoL, and physical function through anti-inflammatory and neuroprotective effects in cancer survivors suffering from long-standing CIPN.
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Affiliation(s)
- MariaLuisa Vigano
- Division of Experimental Medicine, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC H3A 0G4, Canada
- Infectious Diseases and Immunity in Global Health Program, Research Institute of the McGill University Health Centre, Montreal, QC H4A 3J1, Canada
| | - Sarah Kubal
- Division of Supportive and Palliative Care, McGill University Health Centre, Montreal, QC H4A 3J1, Canada
| | - Yao Lu
- Institute of Parasitology, Faculty of Agricultural and Environmental Sciences, McGill University, Ste-Anne-de-Bellevue, QC H9X 3V9, Canada
| | - Sarah Habib
- Division of Supportive and Palliative Care, McGill University Health Centre, Montreal, QC H4A 3J1, Canada
| | - Suzanne Samarani
- Infectious Diseases and Immunity in Global Health Program, Research Institute of the McGill University Health Centre, Montreal, QC H4A 3J1, Canada
| | - Georgina Cama
- Division of Supportive and Palliative Care, McGill University Health Centre, Montreal, QC H4A 3J1, Canada
| | - Charles Viau
- Institute of Parasitology, Faculty of Agricultural and Environmental Sciences, McGill University, Ste-Anne-de-Bellevue, QC H9X 3V9, Canada
| | - Houman Farzin
- Division of Palliative Care, Jewish General Hospital, Montreal, QC H3T 1E2, Canada
| | - Nebras Koudieh
- Division of Palliative Care, Jewish General Hospital, Montreal, QC H3T 1E2, Canada
| | - Jianguo Xia
- Institute of Parasitology, Faculty of Agricultural and Environmental Sciences, McGill University, Ste-Anne-de-Bellevue, QC H9X 3V9, Canada
- Department of Microbiology and Immunology, McGill University, Montreal, QC H3A 0G4, Canada
| | - Ali Ahmad
- Infectious Diseases and Immunity in Global Health Program, Research Institute of the McGill University Health Centre, Montreal, QC H4A 3J1, Canada
| | - Antonio Vigano
- Division of Supportive and Palliative Care, McGill University Health Centre, Montreal, QC H4A 3J1, Canada
| | - Cecilia T. Costiniuk
- Division of Experimental Medicine, Faculty of Medicine and Health Sciences, McGill University, Montreal, QC H3A 0G4, Canada
- Infectious Diseases and Immunity in Global Health Program, Research Institute of the McGill University Health Centre, Montreal, QC H4A 3J1, Canada
- Division of Infectious Diseases and Chronic Viral Illness Service, Royal Victoria Hospital—Glen Site, McGill University Health Centre, Montreal, QC H4A 3J1, Canada
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Abdalla MMI. Enteric neuropathy in diabetes: Implications for gastrointestinal function. World J Gastroenterol 2024; 30:2852-2865. [PMID: 38947292 PMCID: PMC11212710 DOI: 10.3748/wjg.v30.i22.2852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 05/04/2024] [Accepted: 05/21/2024] [Indexed: 06/05/2024] Open
Abstract
Diabetes, commonly known for its metabolic effects, also critically affects the enteric nervous system (ENS), which is essential in regulating gastrointestinal (GI) motility, secretion, and absorption. The development of diabetes-induced enteric neuropathy can lead to various GI dysfunctions, such as gastroparesis and irregular bowel habits, primarily due to disruptions in the function of neuronal and glial cells within the ENS, as well as oxidative stress and inflammation. This editorial explores the pathophysiological mechanisms underlying the development of enteric neuropathy in diabetic patients. Additionally, it discusses the latest advances in diagnostic approaches, emphasizing the need for early detection and intervention to mitigate GI complications in diabetic individuals. The editorial also reviews current and emerging therapeutic strategies, focusing on pharmacological treatments, dietary management, and potential neuromodulatory interventions. Ultimately, this editorial highlights the necessity of a multidisciplinary approach in managing enteric neuropathy in diabetes, aiming to enhance patient quality of life and address a frequently overlooked complication of this widespread disease.
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Affiliation(s)
- Mona Mohamed Ibrahim Abdalla
- Department of Human Biology, School of Medicine, International Medical University, Bukit Jalil 57000, Kuala Lumpur, Malaysia
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Jiang SQ, Ye SN, Huang YH, Ou YW, Chen KY, Chen JS, Tang SB. Gut microbiota induced abnormal amino acids and their correlation with diabetic retinopathy. Int J Ophthalmol 2024; 17:883-895. [PMID: 38766339 PMCID: PMC11074191 DOI: 10.18240/ijo.2024.05.13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 02/20/2024] [Indexed: 05/22/2024] Open
Abstract
AIM To explore the correlation of gut microbiota and the metabolites with the progression of diabetic retinopathy (DR) and provide a novel strategy to elucidate the pathological mechanism of DR. METHODS The fecal samples from 32 type 2 diabetes patients with proliferative retinopathy (PDR), 23 with non-proliferative retinopathy (NPDR), 27 without retinopathy (DM), and 29 from the sex-, age- and BMI- matched healthy controls (29 HC) were analyzed by 16S rDNA gene sequencing. Sixty fecal samples from PDR, DM, and HC groups were assayed by untargeted metabolomics. Fecal metabolites were measured using liquid chromatography-mass spectrometry (LC-MS) analysis. Associations between gut microbiota and fecal metabolites were analyzed. RESULTS A cluster of 2 microbiome and 12 metabolites accompanied with the severity of DR, and the close correlation of the disease progression with PDR-related microbiome and metabolites were found. To be specific, the structure of gut microbiota differed in four groups. Diversity and richness of gut microbiota were significantly lower in PDR and NPDR groups, than those in DM and HC groups. A cluster of microbiome enriched in PDR group, including Pseudomonas, Ruminococcaceae-UCG-002, Ruminococcaceae-UCG-005, Christensenellaceae-R-7, was observed. Functional analysis showed that the glucose and nicotinate degradations were significantly higher in PDR group than those in HC group. Arginine, serine, ornithine, and arachidonic acid were significantly enriched in PDR group, while proline was enriched in HC group. Functional analysis illustrated that arginine biosynthesis, lysine degradation, histidine catabolism, central carbon catabolism in cancer, D-arginine and D-ornithine catabolism were elevated in PDR group. Correlation analysis revealed that Ruminococcaceae-UCG-002 and Christensenellaceae-R-7 were positively associated with L-arginine, ornithine levels in fecal samples. CONCLUSION This study elaborates the different microbiota structure in the gut from four groups. The relative abundance of Ruminococcaceae-UCG-002 and Parabacteroides are associated with the severity of DR. Amino acid and fatty acid catabolism is especially disordered in PDR group. This may help provide a novel diagnostic parameter for DR, especially PDR.
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Affiliation(s)
- Sheng-Qun Jiang
- Aier Eye Hospital, Jinan University, Guangzhou 510000, Guangdong Province, China
- Aier Eye Institute and Changsha Aier Hospital, Changsha 410000, Hunan Province, China
- The First Affiliated Hospital of Bengbu Medical University, Bengbu 233000, Anhui Province, China
| | - Su-Na Ye
- Aier Eye Hospital, Jinan University, Guangzhou 510000, Guangdong Province, China
- Aier Eye Institute and Changsha Aier Hospital, Changsha 410000, Hunan Province, China
| | - Yin-Hua Huang
- Aier Eye Hospital, Jinan University, Guangzhou 510000, Guangdong Province, China
- Aier Eye Institute and Changsha Aier Hospital, Changsha 410000, Hunan Province, China
| | - Yi-Wen Ou
- Aier Eye Hospital, Jinan University, Guangzhou 510000, Guangdong Province, China
- Aier Eye Institute and Changsha Aier Hospital, Changsha 410000, Hunan Province, China
| | - Ke-Yang Chen
- Aier Eye Hospital, Jinan University, Guangzhou 510000, Guangdong Province, China
- Aier Eye Institute and Changsha Aier Hospital, Changsha 410000, Hunan Province, China
- School of Public Health, Anhui Medical University, Hefei 230000, Anhui Province, China
| | - Jian-Su Chen
- Aier Eye Hospital, Jinan University, Guangzhou 510000, Guangdong Province, China
- Aier Eye Institute and Changsha Aier Hospital, Changsha 410000, Hunan Province, China
| | - Shi-Bo Tang
- Aier Eye Hospital, Jinan University, Guangzhou 510000, Guangdong Province, China
- Aier Eye Institute and Changsha Aier Hospital, Changsha 410000, Hunan Province, China
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Gupta A, Chan SY, Toh R, Low JM, Liu IMZ, Lim SL, Lee LY, Swarup S. Gestational diabetes-related gut microbiome dysbiosis is not influenced by different Asian ethnicities and dietary interventions: a pilot study. Sci Rep 2024; 14:9855. [PMID: 38684759 PMCID: PMC11058859 DOI: 10.1038/s41598-024-60386-y] [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: 07/20/2023] [Accepted: 04/22/2024] [Indexed: 05/02/2024] Open
Abstract
Gut microbiome dysbiosis contributes to the pathophysiology of both gestational diabetes mellitus (GDM) and its associated adverse outcomes in the woman and offspring. Even though GDM prevalence, complications, and outcomes vary among different ethnic groups, limited information is available about the influence of ethnicity on gut microbiome dysbiosis in pregnancies complicated by GDM. This pilot prospective cohort study examined the impact of ethnicity on gut dysbiosis in GDM among three Asian ethnic groups (Chinese, Malay, Indian) living in Singapore, and investigated the potential modulatory roles of diet and lifestyle modifications on gut microbiome post-GDM diagnosis. Women with GDM (n = 53) and without GDM (n = 16) were recruited. Fecal samples were collected at 24-28- and 36-40-weeks' gestation and analyzed by targeted 16S rRNA gene-based amplicon sequencing. Permutational multivariate analysis of variance (PERMANOVA) analysis was performed to evaluate differences between groups. Differentially abundant taxa were identified by DeSeq2 based analysis. Functional prediction was performed using the phylogenetic investigation of communities by reconstruction of unobserved states (PICRUSt2). Among women with GDM, gut microbiome from different ethnicities harbored common microbial features. However, among those without GDM, there was contrasting microbiome composition between ethnic groups. Microbial members such as Collinsella, Blautia, Ruminococcus, Ruminococcus gnavus, Ruminococcus torques, and Eubacterium hallii groups were differentially enriched (p < 0.05) in women with GDM compared to those without. Among women with GDM, no differences in alpha- and beta- diversity were observed when comparing 24-28 weeks' samples with 36-40 weeks' samples, a period covering intense dietary and lifestyle modification, suggesting an inability to modulate gut microbiota through classic GDM management. Women with GDM have a distinct gut microbiome profile which harbours common features across different Asian ethnic groups, consistent with the notion that specific microbes are involved in the pathogenesis of insulin resistance, pro-inflammatory conditions, and other metabolic dysregulation known to be present in GDM.
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Affiliation(s)
- Abhishek Gupta
- Singapore Centre For Environmental Life Sciences Engineering (SCELSE), National University of Singapore, Singapore, Singapore.
| | - Shiao Yng Chan
- Department of Obstetrics and Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- Agency for Science, Technology and Research (A*STAR), Singapore Institute for Clinical Sciences (SICS), Singapore, Singapore
| | - Rachel Toh
- Department of Neonatology, Khoo Teck Puat-National University Children's Medical Institute, National University Hospital, National University Health System, Singapore, Singapore
| | - Jia Ming Low
- Department of Neonatology, Khoo Teck Puat-National University Children's Medical Institute, National University Hospital, National University Health System, Singapore, Singapore.
- Department of Paediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
| | - Isabella Ming Zhen Liu
- Department of Neonatology, Khoo Teck Puat-National University Children's Medical Institute, National University Hospital, National University Health System, Singapore, Singapore
| | - Su Lin Lim
- Department of Dietetics, National University Hospital, National University Health System, Singapore, Singapore
| | - Le Ye Lee
- Foundation Healthcare Holdings, Singapore, Singapore
| | - Sanjay Swarup
- Singapore Centre For Environmental Life Sciences Engineering (SCELSE), National University of Singapore, Singapore, Singapore
- Department of Biological Sciences, National University of Singapore, Singapore, Singapore
- NUS Environmental Research Institute, National University of Singapore, Singapore, Singapore
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Zhang J, Wang H, Liu Y, Shi M, Zhang M, Zhang H, Chen J. Advances in fecal microbiota transplantation for the treatment of diabetes mellitus. Front Cell Infect Microbiol 2024; 14:1370999. [PMID: 38660489 PMCID: PMC11039806 DOI: 10.3389/fcimb.2024.1370999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 03/27/2024] [Indexed: 04/26/2024] Open
Abstract
Diabetes mellitus (DM) refers to a group of chronic diseases with global prevalence, characterized by persistent hyperglycemia resulting from various etiologies. DM can harm various organ systems and lead to acute or chronic complications, which severely endanger human well-being. Traditional treatment mainly involves controlling blood sugar levels through replacement therapy with drugs and insulin; however, some patients still find a satisfactory curative effect difficult to achieve. Extensive research has demonstrated a close correlation between enteric dysbacteriosis and the pathogenesis of various types of DM, paving the way for novel therapeutic approaches targeting the gut microbiota to manage DM. Fecal microbiota transplantation (FMT), a method for re-establishing the intestinal microbiome balance, offers new possibilities for treating diabetes. This article provides a comprehensive review of the correlation between DM and the gut microbiota, as well as the current advancements in FMT treatment for DM, using FMT as an illustrative example. This study aims to offer novel perspectives and establish a theoretical foundation for the clinical diagnosis and management of DM.
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Affiliation(s)
- Juan Zhang
- Department of Endocrinology, the Affiliated Huai’an No.1 People’s Hospital of Nanjing Medical University, Huai’an, Jiangsu, China
| | - Honggang Wang
- Department of Gastroenterology, the Affiliated Huai’an No.1 People’s Hospital of Nanjing Medical University, Huai’an, Jiangsu, China
| | - Ying Liu
- Department of Endocrinology, the Affiliated Huai’an No.1 People’s Hospital of Nanjing Medical University, Huai’an, Jiangsu, China
| | - Min Shi
- Department of Endocrinology, the Affiliated Huai’an No.1 People’s Hospital of Nanjing Medical University, Huai’an, Jiangsu, China
| | - Minna Zhang
- Department of Gastroenterology, the Affiliated Huai’an No.1 People’s Hospital of Nanjing Medical University, Huai’an, Jiangsu, China
| | - Hong Zhang
- Department of Endocrinology, the Affiliated Huai’an No.1 People’s Hospital of Nanjing Medical University, Huai’an, Jiangsu, China
| | - Juan Chen
- Department of Endocrinology, the Affiliated Huai’an No.1 People’s Hospital of Nanjing Medical University, Huai’an, Jiangsu, China
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Wang Q, Li W, Zhang X, Chung SL, Dai J, Jin Z. Tauroursodeoxycholic acid protects Schwann cells from high glucose-induced cytotoxicity by targeting NLRP3 to regulate cell migration and pyroptosis. Biotechnol Appl Biochem 2024; 71:28-37. [PMID: 37749820 DOI: 10.1002/bab.2518] [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: 04/26/2023] [Accepted: 09/14/2023] [Indexed: 09/27/2023]
Abstract
Diabetic peripheral neuropathy (DPN) is the most prevalent complication of type 2 diabetes mellitus (T2DM), and it seriously affects the quality of life of patients. Tauroursodeoxycholic acid (TUDCA) is a bile acid that plays a protective role against various diseases. However, the function of TUDCA in DPN progression needs to be elucidated. Hence, this study clarified the action of TUDCA on DPN development and explored its mechanism of action. Fecal samples were collected from 50 patients with T2DM or DPN. Schwann cells induced by high levels were constructed to simulate an uncontrolled diabetic state. Cell viability and migration were measured using the CCK-8 and wound-healing assays, respectively. Reactive oxygen species and pyroptosis were detected using flow cytometry. Parabacteroides goldsteinii and Parabacteroides distasonis levels were decreased in the feces of patients with DPN. TUDCA enhanced the viability and migration ability of high glucose-stimulated Schwann cells. In addition, Schwann cell pyroptosis stimulated by high glucose levels was inhibited by TUDCA. Furthermore, the protective roles of TUDCA in cell viability, migration ability, and pyroptosis of Schwann cells stimulated by high glucose were suppressed by the overexpression of NLRP3. TUDCA enhanced cell viability and migration and suppressed pyroptosis in Schwann cells stimulated by high glucose levels by modulating NLRP3 expression. Thus, TUDCA may be a promising drug for DPN therapy.
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Affiliation(s)
- Qiuyue Wang
- Department of Acupuncture and Moxibustion, Shanghai Seventh People's Hospital Affiliated to Shanghai University of Traditional Chinese medicine, Shanghai, China
| | - Wen Li
- Department of Acupuncture and Moxibustion, Shanghai Seventh People's Hospital Affiliated to Shanghai University of Traditional Chinese medicine, Shanghai, China
| | - Xiaozhuo Zhang
- Department of Acupuncture and Moxibustion, Shanghai Seventh People's Hospital Affiliated to Shanghai University of Traditional Chinese medicine, Shanghai, China
| | - Shuet Ling Chung
- Department of Acupuncture and Moxibustion, Shanghai Seventh People's Hospital Affiliated to Shanghai University of Traditional Chinese medicine, Shanghai, China
| | - Jinling Dai
- Department of Acupuncture and Moxibustion, Shanghai Seventh People's Hospital Affiliated to Shanghai University of Traditional Chinese medicine, Shanghai, China
| | - Zhu Jin
- Department of Acupuncture and Moxibustion, Shanghai Seventh People's Hospital Affiliated to Shanghai University of Traditional Chinese medicine, Shanghai, China
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Corriero A, Giglio M, Inchingolo F, Moschetta A, Varrassi G, Puntillo F. Gut Microbiota Modulation and Its Implications on Neuropathic Pain: A Comprehensive Literature Review. Pain Ther 2024; 13:33-51. [PMID: 38087070 PMCID: PMC10796891 DOI: 10.1007/s40122-023-00565-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 11/13/2023] [Indexed: 01/19/2024] Open
Abstract
Neuropathic pain (NP) is a chronic pain disorder arising from somatosensory nervous system impairment. Extensive evidence supports the notion that the gut microbiota (GM) is crucial in maintaining human health by performing vital tasks. At the same time, its disruption has been linked to the emergence and advancement of an expanding range of disorders, including NP, in which GM could play a role in its pathophysiology. The crosstalk between the nervous system and GM happens through immune mediators, metabolites, and nervous structures and involves both central and peripheral nervous systems. This literature review aims to thoroughly investigate the function of modulating GM in the treatment of NP. It will achieve this by integrating existing knowledge, identifying underlying mechanisms, and evaluating the possible clinical consequences of exploiting the gut-brain axis. We will cover the main therapeutic applications of the described GM-modulators, such as probiotics, faecal microbiota transplantation, dietary supplements and emotional support, to the main kinds of NP in which any evidence, even if only pre-clinical, has been unravelled in recent years. The explored NP areas include chemotherapy-induced peripheral neuropathy, diabetic neuropathy, trauma-induced neuropathic pain, trigeminal neuralgia, postherpetic neuralgia and low back pain.
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Affiliation(s)
- Alberto Corriero
- Department of Interdisciplinary Medicine - ICU Section, University of Bari "Aldo Moro", Piazza G. Cesare 11, 70124, Bari, Italy.
| | - Mariateresa Giglio
- Department of Interdisciplinary Medicine - ICU Section, University of Bari "Aldo Moro", Piazza G. Cesare 11, 70124, Bari, Italy
| | - Francesco Inchingolo
- Department of Interdisciplinary Medicine - Dental Medicine Section, University of Bari "Aldo Moro", 70124, Bari, Italy
| | - Antonio Moschetta
- Department of Interdisciplinary Medicine, University of Bari "Aldo Moro", Piazza Giulio Cesare 11, 70124, Bari, Italy
| | | | - Filomena Puntillo
- Department of Interdisciplinary Medicine - ICU Section, University of Bari "Aldo Moro", Piazza G. Cesare 11, 70124, Bari, Italy.
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12
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Hasani M, Pilerud ZA, Kami A, Vaezi AA, Sobhani S, Ejtahed HS, Qorbani M. Association between Gut Microbiota Compositions with MicrovascularComplications in Individuals with Diabetes: A Systematic Review. Curr Diabetes Rev 2024; 20:e240124226068. [PMID: 38275035 DOI: 10.2174/0115733998280396231212114345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 11/07/2023] [Accepted: 11/16/2023] [Indexed: 01/27/2024]
Abstract
BACKGROUND Diabetes is one of the chronic and very complex diseases that can lead to microvascular complications. Recent evidence demonstrates that dysbiosis of the microbiota composition might result in low-grade, local, and systemic inflammation, which contributes directly to the development of diabetes mellitus and its microvascular consequences. OBJECTIVE The aim of this systematic review was to investigate the association between diabetes microvascular complications, including retinopathy, neuropathy, nephropathy, and gut microbiota composition. METHODS A systematic search was carried out in PubMed, Scopus, and ISI Web of Science from database inception to March 2023. Screening, data extraction, and quality assessment were performed by two independent authors. The Newcastle-Ottawa Quality Assessment Scale was used for quality assessment. RESULTS About 19 articles were selected from 590 retrieved articles. Among the included studies, nephropathy has been studied more than other complications of diabetes, showing that the composition of the healthy microbiota is changed, and large quantities of uremic solutes that cause kidney injury are produced by gut microbes. Phyla, including Fusobacteria and Proteobacteria, accounted for the majority of the variation in gut microbiota between Type 2 diabetic patients with and without neuropathy. In cases with retinopathy, an increase in pathogenic and proinflammatory bacteria was observed. CONCLUSION Our results revealed that increases in Bacteroidetes, Proteobacteria and Fusobacteria may be associated with the pathogenesis of diabetic nephropathy, neuropathy, and retinopathy. In view of the detrimental role of intestinal dysbiosis in the development of diabetes-related complications, gut microbiota assessment may be used as a biomarker in the future and interventions that modulate the composition of microbiota in individuals with diabetes can be used to prevent and control these complications.
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Affiliation(s)
- Motahareh Hasani
- Department of Nutrition, School of Health, Golestan University of Medical Sciences, Gorgan, Iran
| | - Zahra Asadi Pilerud
- Student Research Committee, Alborz University of Medical Sciences, Karaj, Iran
| | - Atefe Kami
- Golestan University of Medical Sciences, Gorgan, Iran
| | - Amir Abbas Vaezi
- Department of Internal Medicine, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran
| | - Sahar Sobhani
- Noncommunicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Hanieh-Sadat Ejtahed
- Obesity and Eating Habits Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mostafa Qorbani
- Noncommunicable Diseases Research Center, Alborz University of Medical Sciences, Karaj, Iran
- Chronic Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
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13
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Xu W, Xue W, Zhou Z, Wang J, Qi H, Sun S, Jin T, Yao P, Zhao JY, Lin F. Formate Might Be a Novel Potential Serum Metabolic Biomarker for Type 2 Diabetic Peripheral Neuropathy. Diabetes Metab Syndr Obes 2023; 16:3147-3160. [PMID: 37842336 PMCID: PMC10576463 DOI: 10.2147/dmso.s428933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 10/04/2023] [Indexed: 10/17/2023] Open
Abstract
Background As one of the most frequent complications of type 2 diabetes mellitus (T2DM), diabetic peripheral neuropathy (DPN) shows a profound impact on 50% of patients with symptoms of neuropathic pain, numbness and other paresthesia. No valid serum biomarkers for the prediction of DPN have been identified in the clinic so far. This study is to investigate the potential serum biomarkers for DPN firstly based on 1H-Nuclear Magnetic Resonance (1H-NMR)-based metabolomics technique. Methods Thirty-six patients enrolled in this study were divided into two groups: 18 T2DM patients without DPN (T2DM group) and 18 T2DM patients with DPN (DPN group). Serum metabolites were measured via 1H-NMR spectroscopy. Bioinformatic approaches including principal component analysis (PCA), orthogonal partial least squares-discriminant analysis (OPLS-DA), independent sample t-test, Fisher's test, Pearson and Spearman correlation analysis, Stepwise multiple linear regression analysis and receiver operating characteristic (ROC) curve analysis were used to identify the potential altered serum biomarkers. Results A total of 20 metabolites were obtained and further analyzed. Formate was identified as the only potential biomarker that decreased in the DPN group with statistical significance after multiple comparisons (p<0.05). Formate also displayed a negative relationship with some elevated clinical markers in DPN. ROC curve analysis showed a good discriminative ability for formate in DPN with an area under the curve (AUC) value of 0.981. Conclusion Formate could be considered a potential serum metabolic biomarker for DPN. The reduced level of formate in DPN may be associated with mitochondrial dysfunction and gut microbiota alteration. Monitoring the level of serum formate would be an important strategy for the early diagnosis of DPN and a supplement of formate may be a promising treatment for DPN in the future.
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Affiliation(s)
- Weisheng Xu
- Department of Pain Medicine, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 200072, People’s Republic of China
- School of Medicine, Tongji University, Shanghai, 200331, People’s Republic of China
| | - Wangsheng Xue
- Department of Pain Medicine, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 200072, People’s Republic of China
| | - Zeyu Zhou
- School of Life Sciences, Fudan University, Shanghai, 200433, People’s Republic of China
| | - Jiying Wang
- Department of Pain Medicine, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 200072, People’s Republic of China
| | - Hui Qi
- Department of Pain Medicine, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 200072, People’s Republic of China
| | - Shiyu Sun
- Department of Pain Medicine, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 200072, People’s Republic of China
| | - Tong Jin
- Department of Pain Medicine, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 200072, People’s Republic of China
| | - Ping Yao
- Department of Pain Medicine, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 200072, People’s Republic of China
| | - Jian-Yuan Zhao
- Institute for Developmental and Regenerative Cardiovascular Medicine, MOE-Shanghai Key Laboratory of Children’s Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200090, People’s Republic of China
| | - Fuqing Lin
- Department of Pain Medicine, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, 200072, People’s Republic of China
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14
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Zhao R, Li N, Liu W, Liu Q, Zhang L, Peng X, Zhao R, Hu H. Low glycemic index potato biscuits alleviate physio-histological damage and gut dysbiosis in rats with type-2 diabetes mellitus induced by high-sugar and high-fat diet and streptozotocin. J Nutr Biochem 2023:109401. [PMID: 37276891 DOI: 10.1016/j.jnutbio.2023.109401] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 05/25/2023] [Accepted: 05/31/2023] [Indexed: 06/07/2023]
Abstract
Type 2 diabetes mellitus (T2DM) is the most common type of diabetes globally and poses a major concern for human health. This study aimed to investigate the effects on T2DM of low-glycemic index (GI) potato biscuits with oat bran and inulin as functional additives. T2DM was induced in rats by streptozotocin (STZ) and a high-sugar and high-fat diet. The alleviation of T2DM by low-GI potato biscuits at different doses was evaluated based on the analysis of glycolipid levels, histological observations, inflammatory markers and gut microbiota structure. Compared to wheat biscuits, low-GI potato biscuits resulted in lower postprandial blood glucose levels. After eight weeks of intervention, fasting blood sugar levels were 16.9% lower in T2DM rats fed high-dose low-GI potato biscuits than in untreated T2DM rats. Moreover, the intervention with low-GI potato biscuits significantly alleviated T2DM-induced pathological damage, glucose and lipid metabolic disorders, and inflammation by reversing the levels of total cholesterol, triglycerides, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, transforming growth factor-β, interleukin-1β, interleukin-6 and tumor necrosis factor-α. Moreover, the levels of short-chain fatty acids and gut microbiota structure in T2DM rats were significantly reversed. The abundance of beneficial bacteria (e.g., Bifidobacterium, Lachnoclostridium, Roseburia) in the gut of T2DM rats was significantly increased whereas the abundance of Escherichia-Shigella and Desulfovibrio decreased. The present study revealed that low-GI potato biscuits alleviated damages caused by high-sugar and high-fat diet- and STZ-induced T2DM in rats, as well as reversed disturbances in the gut microbiota. Thus, low-GI potato biscuits are potentially beneficial to T2DM patients.
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Affiliation(s)
- Renjie Zhao
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Comprehensive Key Laboratory of Agro-products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, P.R. China
| | - Nan Li
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Comprehensive Key Laboratory of Agro-products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, P.R. China
| | - Wei Liu
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Comprehensive Key Laboratory of Agro-products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, P.R. China
| | - Qiannan Liu
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Comprehensive Key Laboratory of Agro-products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, P.R. China
| | - Liang Zhang
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Comprehensive Key Laboratory of Agro-products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, P.R. China
| | - Xingyun Peng
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100193, P.R. China
| | - Ruixuan Zhao
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Comprehensive Key Laboratory of Agro-products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, P.R. China.
| | - Honghai Hu
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Comprehensive Key Laboratory of Agro-products Processing, Ministry of Agriculture and Rural Affairs, Beijing 100193, P.R. China.
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15
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Xu J, Cai M, Wang Z, Chen Q, Han X, Tian J, Jin S, Yan Z, Li Y, Lu B, Lu H. Phenylacetylglutamine as a novel biomarker of type 2 diabetes with distal symmetric polyneuropathy by metabolomics. J Endocrinol Invest 2023; 46:869-882. [PMID: 36282471 PMCID: PMC10105673 DOI: 10.1007/s40618-022-01929-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 09/23/2022] [Indexed: 11/30/2022]
Abstract
PURPOSE Type 2 diabetes mellitus (T2DM) with distal symmetric polyneuropathy (DSPN) is a disease involving the nervous system caused by metabolic disorder, while the metabolic spectrum and key metabolites remain poorly defined. METHODS Plasma samples of 30 healthy controls, 30 T2DM patients, and 60 DSPN patients were subjected to nontargeted metabolomics. Potential biomarkers of DSPN were screened based on univariate and multivariate statistical analyses, ROC curve analysis, and logistic regression. Finally, another 22 patients with T2DM who developed DSPN after follow-up were selected for validation of the new biomarker based on target metabolomics. RESULTS Compared with the control group and the T2DM group, 6 metabolites showed differences in the DSPN group (P < 0.05; FDR < 0.1; VIP > 1) and a rising step trend was observed. Among them, phenylacetylglutamine (PAG) and sorbitol displayed an excellent discriminatory ability and associated with disease severity. The verification results demonstrated that when T2DM progressed to DSPN, the phenylacetylglutamine content increased significantly (P = 0.004). CONCLUSION The discovered and verified endogenous metabolite PAG may be a novel potential biomarker of DSPN and involved in the disease pathogenesis.
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Affiliation(s)
- J. Xu
- Department of Endocrinology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203 China
| | - M. Cai
- Department of Endocrinology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203 China
| | - Z. Wang
- Department of Emergency, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203 China
| | - Q. Chen
- Department of Endocrinology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203 China
| | - X. Han
- Department of Endocrinology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203 China
| | - J. Tian
- Department of Endocrinology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203 China
| | - S. Jin
- Department of Endocrinology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203 China
| | - Z. Yan
- Department of Endocrinology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203 China
| | - Y. Li
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, 200040 China
| | - B. Lu
- Department of Endocrinology and Metabolism, Huashan Hospital, Fudan University, Shanghai, 200040 China
| | - H. Lu
- Department of Endocrinology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203 China
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16
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Guo K, Figueroa-Romero C, Noureldein M, Hinder LM, Sakowski SA, Rumora AE, Petit H, Savelieff MG, Hur J, Feldman EL. Gut microbiota in a mouse model of obesity and peripheral neuropathy associated with plasma and nerve lipidomics and nerve transcriptomics. MICROBIOME 2023; 11:52. [PMID: 36922895 PMCID: PMC10015923 DOI: 10.1186/s40168-022-01436-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 11/25/2022] [Indexed: 06/18/2023]
Abstract
BACKGROUND Peripheral neuropathy (PN) is a common complication in obesity, prediabetes, and type 2 diabetes, though its pathogenesis remains incompletely understood. In a murine high-fat diet (HFD) obesity model of PN, dietary reversal (HFD-R) to a low-fat standard diet (SD) restores nerve function and the nerve lipidome to normal. As the gut microbiome represents a potential link between dietary fat intake and nerve health, the current study assessed shifts in microbiome community structure by 16S rRNA profiling during the paradigm of dietary reversal (HFD-R) in various gut niches. Dietary fat content (HFD versus SD) was also correlated to gut flora and metabolic and PN phenotypes. Finally, PN-associated microbial taxa that correlated with the plasma and sciatic nerve lipidome and nerve transcriptome were used to identify lipid species and genes intimately related to PN phenotypes. RESULTS Microbiome structure was altered in HFD relative to SD but rapidly reversed with HFD-R. Specific taxa variants correlating positively with metabolic health associated inversely with PN, while specific taxa negatively linked to metabolic health positively associated with PN. In HFD, PN-associated taxa variants, including Lactobacillus, Lachnoclostridium, and Anaerotruncus, also positively correlated with several lipid species, especially elevated plasma sphingomyelins and sciatic nerve triglycerides. Negative correlations were additionally present with other taxa variants. Moreover, relationships that emerged between specific PN-associated taxa variants and the sciatic nerve transcriptome were related to inflammation, lipid metabolism, and antioxidant defense pathways, which are all established in PN pathogenesis. CONCLUSIONS The current results indicate that microbiome structure is altered with HFD, and that certain taxa variants correlate with metabolic health and PN. Apparent links between PN-associated taxa and certain lipid species and nerve transcriptome-related pathways additionally provide insight into new targets for microbiota and the associated underlying mechanisms of action in PN. Thus, these findings strengthen the possibility of a gut-microbiome-peripheral nervous system signature in PN and support continuing studies focused on defining the connection between the gut microbiome and nerve health to inform mechanistic insight and therapeutic opportunities. Video Abstract.
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Affiliation(s)
- Kai Guo
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109 USA
| | | | - Mohamed Noureldein
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109 USA
| | - Lucy M. Hinder
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109 USA
- Reata Pharmaceuticals, Irving, TX 75063 USA
| | - Stacey A. Sakowski
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109 USA
| | - Amy E. Rumora
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109 USA
- Department of Neurology, Columbia University, New York, NY 10032 USA
| | - Hayley Petit
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109 USA
| | - Masha G. Savelieff
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109 USA
| | - Junguk Hur
- Department of Biomedical Sciences, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND 58202 USA
| | - Eva L. Feldman
- Department of Neurology, University of Michigan, Ann Arbor, MI 48109 USA
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17
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Crost EH, Coletto E, Bell A, Juge N. Ruminococcus gnavus: friend or foe for human health. FEMS Microbiol Rev 2023; 47:fuad014. [PMID: 37015876 PMCID: PMC10112845 DOI: 10.1093/femsre/fuad014] [Citation(s) in RCA: 56] [Impact Index Per Article: 56.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 02/06/2023] [Accepted: 04/03/2023] [Indexed: 04/06/2023] Open
Abstract
Ruminococcus gnavus was first identified in 1974 as a strict anaerobe in the gut of healthy individuals, and for several decades, its study has been limited to specific enzymes or bacteriocins. With the advent of metagenomics, R. gnavus has been associated both positively and negatively with an increasing number of intestinal and extraintestinal diseases from inflammatory bowel diseases to neurological disorders. This prompted renewed interest in understanding the adaptation mechanisms of R. gnavus to the gut, and the molecular mediators affecting its association with health and disease. From ca. 250 publications citing R. gnavus since 1990, 94% were published in the last 10 years. In this review, we describe the biological characterization of R. gnavus, its occurrence in the infant and adult gut microbiota and the factors influencing its colonization of the gastrointestinal tract; we also discuss the current state of our knowledge on its role in host health and disease. We highlight gaps in knowledge and discuss the hypothesis that differential health outcomes associated with R. gnavus in the gut are strain and niche specific.
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Affiliation(s)
- Emmanuelle H Crost
- Quadram Institute Bioscience, Rosalind Franklin Road, Colney, Norwich NR4 7UQ, United Kingdom
| | - Erika Coletto
- Quadram Institute Bioscience, Rosalind Franklin Road, Colney, Norwich NR4 7UQ, United Kingdom
| | - Andrew Bell
- Quadram Institute Bioscience, Rosalind Franklin Road, Colney, Norwich NR4 7UQ, United Kingdom
| | - Nathalie Juge
- Quadram Institute Bioscience, Rosalind Franklin Road, Colney, Norwich NR4 7UQ, United Kingdom
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18
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Malinowska AM, Kok DE, Steegenga WT, Hooiveld GJEJ, Chmurzynska A. Human gut microbiota composition and its predicted functional properties in people with western and healthy dietary patterns. Eur J Nutr 2022; 61:3887-3903. [PMID: 35748920 PMCID: PMC9596542 DOI: 10.1007/s00394-022-02928-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 05/31/2022] [Indexed: 11/27/2022]
Abstract
PURPOSE Some dietary habits cluster together, and for this reason it is advised to study the impact of entire dietary patterns on human health, rather than that of individual dietary habits. The main objective of this study was to evaluate differences in gut microbiota composition and their predicted functional properties between people with a healthy (HDP) and western (WDP) dietary pattern. METHODS A cross-sectional, observational study was carried out on 200 participants enrolled 2017-2018 in Poznań, Poland, equally distributed into HDP and WDP groups. Diet was estimated using 3-day food records and information on stool transit times was collected. Fecal microbiota composition was assessed by 16S rRNA gene sequencing and its functional properties were predicted by the PICRUSt2 workflow. RESULTS The α-diversity did not differ between people with WDP and HDP, but β-diversity was associated with dietary pattern. People with HDP had higher relative abundances (RA) of Firmicutes and Faecalibacterium and lower RA of Bacteroidota and Escherichia-Shigella than participants with WDP. Only a small proportion of the variance in microbiota composition (1.8%) and its functional properties (2.9%) could be explained by dietary intake (legumes, simple sugars and their sources, like fruit, soft drinks) and stool transit characteristics. CONCLUSION Gut microbiota composition and predicted metabolic potential is shaped by overall diet quality as well as the frequency of defecation; however, the cumulative effect of these explain only a relatively low proportion of variance.
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Affiliation(s)
- Anna M Malinowska
- Department of Human Nutrition and Dietetics, Poznań University of Life Sciences, Wojska Polskiego 31, 60-624, Poznan, Poland.
- Division of Human Nutrition and Health, Wageningen University and Research, PO Box 17, 6700 AA, Wageningen, The Netherlands.
| | - Dieuwertje E Kok
- Division of Human Nutrition and Health, Wageningen University and Research, PO Box 17, 6700 AA, Wageningen, The Netherlands
| | - Wilma T Steegenga
- Division of Human Nutrition and Health, Wageningen University and Research, PO Box 17, 6700 AA, Wageningen, The Netherlands
| | - Guido J E J Hooiveld
- Division of Human Nutrition and Health, Wageningen University and Research, PO Box 17, 6700 AA, Wageningen, The Netherlands
| | - Agata Chmurzynska
- Department of Human Nutrition and Dietetics, Poznań University of Life Sciences, Wojska Polskiego 31, 60-624, Poznan, Poland
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19
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Bai J, Wan Z, Zhang Y, Wang T, Xue Y, Peng Q. Composition and diversity of gut microbiota in diabetic retinopathy. Front Microbiol 2022; 13:926926. [PMID: 36081798 PMCID: PMC9445585 DOI: 10.3389/fmicb.2022.926926] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Accepted: 08/05/2022] [Indexed: 11/13/2022] Open
Abstract
ObjectiveDiabetic retinopathy (DR) is one of the most common complications of type 2 diabetes mellitus. The current study investigates the composition, structure, and function of gut microbiota in DR patients and explores the correlation between gut microbiota and clinical characteristics of DR.MethodsA total of 50 stool samples were collected from 50 participants, including 25 DR patients and 25 healthy controls (HCs). 16S ribosomal RNA gene sequencing was used to analyze the gut microbial composition in these two groups. DNA was extracted from the fecal samples using the MiSeq platform.ResultsThe microbial structure and composition of DR patients were different from that of HCs. The microbial richness of gut microbiota in DR was higher than that of normal individuals. The alterations of microbiome of DR patients were associated with disrupted Firmicutes, Bacteroidetes, Synergistota, and Desulfobacterota phyla. In addition, increased levels of Bacteroides, Megamonas, Ruminococcus_torques_group, Lachnoclostridium, and Alistipes, and decreased levels of Blautia, Eubacterium_ hallii_group, Collinsella, Dorea, Romboutsia, Anaerostipes, and Fusicatenibacter genera were observed in the DR groups. Additionally, a stochastic forest model was developed to identify a set of biomarkers with seven bacterial genera that can differentiate patients with DR from those HC. The microbial communities exhibited varied functions in these two groups because of the alterations of the above-mentioned bacterial genera.ConclusionThe altered composition and function of gut microbiota in DR patients indicated that gut microbiome could be used as non-invasive biomarkers, improve clinical diagnostic methods, and identify putative therapeutic targets for DR.
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Takeuchi Y, Mizukami H, Kudoh K, Osonoi S, Sasaki T, Kushibiki H, Ogasawara S, Hara Y, Igawa A, Pan X, Yamada T, Yamazaki K, Mikami T, Daimon M, Yagihashi S, Hakamada K, Nakaji S. The diversity and abundance of gut microbiota are associated with the pain sensation threshold in the Japanese population. Neurobiol Dis 2022; 173:105839. [PMID: 35988875 DOI: 10.1016/j.nbd.2022.105839] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 08/02/2022] [Accepted: 08/13/2022] [Indexed: 10/15/2022] Open
Abstract
Small fibre neuropathy (SFN) is an initial pathology of diabetic polyneuropathy (DPN). Serum lipopolysaccharide binding protein levels are positively correlated with the pain threshold in the foot, suggesting that the abundance of gut Gram-negative bacilli, which are a source of lipopolysaccharides, may be involved in the development of DPN. Furthermore, the abundance of the gut and oral microbiota is assumed to be involved in the pathogenesis of diabetes. Nevertheless, the association between SFN and the microbiota has not been clarified. A total of 1056 individuals were recruited in the 2018 Iwaki Health Promotion Project. Pain sensation was evaluated based on the pain threshold from intraepidermal electrical stimulation (PINT). Patients with PINT scores <0.15 mA were categorized into the low-PINT group (n = 718); otherwise, they were categorized into the high-PINT group (n = 283). Furthermore, each group was divided into the subjects with or without glucose tolerance based on HbA1c levels, fasting blood glucose levels and diabetic history. Principal coordinate analysis and α- and β-diversity of the microbiota were evaluated. The correlation between clinical and microbiota data was examined. Oral microbiota diversity showed no structural differences according to PINT scores, whereas principal coordinate analysis and α- and β-diversity revealed significant structural differences in gut microbiota (p < 0.01, p < 0.05 and p < 0.05, respectively), even after the participants with glucose intolerance were excluded (p < 0.01, p < 0.05 and p < 0.05, respectively). The relative abundance of the genus Bacteroides was significantly lower in high-PINT participants compared with low-PINT participants (10 ± 6.7% vs. 11.3 ± 7.0%, p < 0.01), even after the exclusion of subjects with diabetes and impaired fasting glucose (10.0 ± 6.5% vs. 11.2 ± 6.9%, p < 0.05). In univariate linear regression analyses, PINT was significantly correlated with metabolic syndrome parameters, eGFR, uric acid level and the abundance of Bacteroides. The correlation between Bacteroides and PINT scores remained significant after adjustment for multiple factors (β = -0.07181, p < 0.05). Changes of bacterial diversity and a low abundance of gut Bacteroides were correlated with elevated PINT scores in the Japanese population. This correlation may represent a new therapeutic option for SFN.
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Affiliation(s)
- Yuki Takeuchi
- Department of Pathology and Molecular Medicine, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan; Department of Endocrinology and Metabolism, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Hiroki Mizukami
- Department of Pathology and Molecular Medicine, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan.
| | - Kazuhiro Kudoh
- Department of Pathology and Molecular Medicine, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Sho Osonoi
- Department of Pathology and Molecular Medicine, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan; Department of Endocrinology and Metabolism, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Takanori Sasaki
- Department of Pathology and Molecular Medicine, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Hanae Kushibiki
- Department of Pathology and Molecular Medicine, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Saori Ogasawara
- Department of Pathology and Molecular Medicine, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Yutaro Hara
- Department of Pathology and Molecular Medicine, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan; Department of Gastroenterological Surgery, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Akiko Igawa
- Department of Pathology and Molecular Medicine, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan; Department of Gastroenterological Surgery, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Xuekai Pan
- Department of Pathology and Molecular Medicine, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan; Department of Gastroenterological Surgery, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Takahiro Yamada
- Department of Pathology and Molecular Medicine, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan; Department of Gastroenterological Surgery, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Keisuke Yamazaki
- Department of Pathology and Molecular Medicine, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan; Department of Gastroenterological Surgery, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Tatsuya Mikami
- Innovation Center for Health Promotion, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Makoto Daimon
- Department of Endocrinology and Metabolism, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Soroku Yagihashi
- Department of Pathology and Molecular Medicine, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Kenichi Hakamada
- Department of Gastroenterological Surgery, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
| | - Shigeyuki Nakaji
- Department of Social Medicine, Hirosaki University Graduate School of Medicine, 5 Zaifu-cho, Hirosaki, Aomori 036-8562, Japan
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Chen Y, Lin Y, Shan C, Li Z, Xiao B, He R, Huang X, Wang Z, Zhang J, Qiao W. Effect of Fufang Huangqi Decoction on the Gut Microbiota in Patients With Class I or II Myasthenia Gravis. Front Neurol 2022; 13:785040. [PMID: 35370890 PMCID: PMC8971287 DOI: 10.3389/fneur.2022.785040] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 02/22/2022] [Indexed: 12/12/2022] Open
Abstract
Objective To investigate the effect of Fufang Huangqi Decoction on the gut microbiota in patients with class I or II myasthenia gravis (MG) and to explore the correlation between gut microbiota and MG (registration number, ChiCTR2100048367; registration website, http://www.chictr.org.cn/listbycreater.aspx; NCBI: SRP338707). Methods In this study, microbial community composition and diversity analyses were carried out on fecal specimens from MG patients who did not take Fufang Huangqi Decoction (control group, n = 8) and those who took Fufang Huangqi Decoction and achieved remarkable alleviation of symptoms (medication group, n = 8). The abundance, diversity within and between habitats, taxonomic differences and corresponding discrimination markers of gut microbiota in the control group and medicated group were assessed. Results Compared with the control group, the medicated group showed a significantly decreased abundance of Bacteroidetes (P < 0.05) and significantly increased abundance of Actinobacteria at the phylum level, a significantly decreased abundance of Bacteroidaceae (P < 0.05) and significantly increased abundance of Bifidobacteriaceae at the family level and a significantly decreased abundance of Blautia and Bacteroides (P < 0.05) and significantly increased abundance of Bifidobacterium, Lactobacillus and Roseburia at the genus level. Compared to the control group, the medicated group had decreased abundance, diversity, and genetic diversity of the communities and increased coverage, but the differences were not significant (P > 0.05); the markers that differed significantly between communities at the genus level and influenced the differences between groups were Blautia, Bacteroides, Bifidobacterium and Lactobacillus. Conclusions MG patients have obvious gut microbiota-associated metabolic disorders. Fufang Huangqi Decoction regulates the gut microbiota in patients with class I or II MG by reducing the abundance of Blautia and Bacteroides and increasing the abundance of Bifidobacterium and Lactobacillus. The correlation between gut microbiota and MG may be related to cell-mediated immunity.
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Affiliation(s)
- Yanghong Chen
- The Affiliated Hospital of Liaoning University of Traditional Chinese Medicine, Liaoning Provincial Key Laboratory for Diagnosis and Treatment of Myasthenia Gravis, Liaoning University of Traditional Chinese Medicine, Shenyang, China
| | - Yi Lin
- Department of General Surgery, The First People's Hospital of Shenyang, Shenyang, China
| | - Caifeng Shan
- The Affiliated Hospital of Liaoning University of Traditional Chinese Medicine, Liaoning Provincial Key Laboratory for Diagnosis and Treatment of Myasthenia Gravis, Liaoning University of Traditional Chinese Medicine, Shenyang, China
| | - Zhaoqing Li
- The Affiliated Hospital of Liaoning University of Traditional Chinese Medicine, Liaoning Provincial Key Laboratory for Diagnosis and Treatment of Myasthenia Gravis, Liaoning University of Traditional Chinese Medicine, Shenyang, China
| | - Bo Xiao
- Zhejiang Jiuru Pharmaceutical Technology Co., Ltd., Hangzhou, China
| | - Rencai He
- Zhejiang Jiuru Pharmaceutical Technology Co., Ltd., Hangzhou, China
| | - Xueshi Huang
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University, Shenyang, China
| | - Zhanyou Wang
- Institute of Health Sciences, Key Laboratory of Medical Cell Biology of Ministry of Education, China Medical University, Shenyang, China
| | - Jingsheng Zhang
- The Affiliated Hospital of Liaoning University of Traditional Chinese Medicine, Liaoning Provincial Key Laboratory for Diagnosis and Treatment of Myasthenia Gravis, Liaoning University of Traditional Chinese Medicine, Shenyang, China
- *Correspondence: Jingsheng Zhang
| | - Wenjun Qiao
- The Affiliated Hospital of Liaoning University of Traditional Chinese Medicine, Liaoning Provincial Key Laboratory for Diagnosis and Treatment of Myasthenia Gravis, Liaoning University of Traditional Chinese Medicine, Shenyang, China
- Wenjun Qiao
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Dietary Plant and Animal Protein Sources Oppositely Modulate Fecal Bilophila and Lachnoclostridium in Vegetarians and Omnivores. Microbiol Spectr 2022; 10:e0204721. [PMID: 35285706 PMCID: PMC9045121 DOI: 10.1128/spectrum.02047-21] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The food we eat not only nourishes our bodies but also provides nutrients to the bacteria living in our guts. Gut bacterial communities are known to be affected by many factors, including diet and bowel cleansing, but the impacts of vegetarian and omnivore diets on fecal bacterial composition are still uncertain. In this study, we analyzed the bacterial compositions of fecal samples from vegetarians and omnivores 5 to 7 days after bowel cleansing, and we correlated specific dietary constituents with the relative abundances of specialized fecal bacteria. A total of 46 participants (23 vegetarians and 23 omnivores) were recruited. All participants underwent standard bowel cleansing before colonoscopy screening. Fecal samples were collected from each participant 5 to 7 days after bowel cleansing, and the fecal microbiota compositions were analyzed with next-generation sequencing. Sixteen participants also provided an image-based dietary record for nutritional assessment. No major differences between dietary groups were observed in terms of fecal bacterial richness, alpha diversity, or beta diversity. A minority of potential pathobionts tended to be elevated in omnivores compared to vegetarians, whereas potential probiotic species tended to be higher in the vegetarians. Detailed dietary assessments further revealed that the plant- and animal-derived proteins may oppositely modulate the relative abundances of pathobionts Bilophila and Lachnoclostridium. However, these results were not statistically significant after multiple-comparison correction. These results suggest that specialized probiotic and pathobiont microbiota constituents are sensitive to the plant- or animal-derived dietary components ingested by vegetarians and omnivores after bowel cleansing. IMPORTANCE Dietary pattern and food choice are associated with expansion of gut pathobionts and risk for metabolic and colonic disease. However, the effects of dietary interventions on intestinal microbiota remain unclear. After bowel cleansing, potential pathobionts and probiotic bacteria were increased in omnivores and vegetarians, respectively. The pathobionts Bilophila and Lachnoclostridium were oppositely modulated by dietary animal and plant protein. From a clinical perspective, fecal pathobionts that may indicate risk for metabolic and colonic disease can potentially be modulated with dietary interventions.
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Zheng X, Wang L, You L, Liu Y, Cohen M, Tian S, Li W, Li X. Dietary licorice enhances in vivo cadmium detoxification and modulates gut microbial metabolism in mice. IMETA 2022; 1:e7. [PMID: 38867726 PMCID: PMC10989944 DOI: 10.1002/imt2.7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 12/27/2021] [Accepted: 01/11/2022] [Indexed: 06/14/2024]
Abstract
Mass cadmium (Cd) poisoning is a serious health problem in many parts of the world. We propose that dietary intervention can be a practical solution to this problem. This study aimed to identify effective dietary products from traditional Chinese herbs that can detoxify Cd. Five candidate herbal foods with detoxifying potential were selected and subjected to mouse toxicological tests. The chemical composition and dose-response effects of licorice on mouse hepatocytes were determined. Licorice was selected for further tests to examine its effects on growth, tissue Cd accumulation, and gut and liver fitness of mice. The expression of hepatic metallothionein (Mt) genes was quantified in vitro in hepatocytes and in vivo in liver tissues of mice. The results showed that licorice dietary intervention was effective in reducing blood Cd by >50% within 1 month. Cd was also substantially reduced in the heart and lung tissues, but increased 2.1-fold in the liver. The liver of Cd poisoned mice improved with licorice intervention. Licorice treatment significantly induced Cd accumulation and expression of the Mt1 gene in hepatic cells both in vitro and in vivo. Licorice intake substantially altered gut microbial structure and enriched Parabacteroides distasonis. Omics results showed that licorice improved gut metabolism, particularly the metabolic pathways for glycyrrhizin, bile acids, and amino acids. Dietary licorice effectively reduced mouse blood Cd and had a profound impact on liver and gut fitness. We conclude that herbal licorice can be used as a dietary intervention for mass Cd poisoning.
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Affiliation(s)
- Xin Zheng
- Hebei Key Laboratory of Soil Ecology, Centre for Agricultural Resources Research, Institute of Genetics and Developmental BiologyChinese Academy of SciencesShijiazhuangChina
| | - Likun Wang
- Hebei Key Laboratory of Soil Ecology, Centre for Agricultural Resources Research, Institute of Genetics and Developmental BiologyChinese Academy of SciencesShijiazhuangChina
| | - Linhao You
- Laboratory of Molecular Iron Metabolism, The Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life ScienceHebei Normal UniversityShijiazhuangChina
| | - Yong‐Xin Liu
- Institute of Genetics and Developmental Biology, State Key Laboratory of Plant GenomicsChinese Academy of SciencesBeijingChina
| | - Michael Cohen
- Department of BiologySonoma State UniversityRohnert ParkCaliforniaUSA
| | - Siyu Tian
- Laboratory of Molecular Iron Metabolism, The Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology of Hebei Province, College of Life ScienceHebei Normal UniversityShijiazhuangChina
| | - Wenjun Li
- Hebei Key Laboratory of Soil Ecology, Centre for Agricultural Resources Research, Institute of Genetics and Developmental BiologyChinese Academy of SciencesShijiazhuangChina
- University of Chinese Academy of SciencesBeijingChina
| | - Xiaofang Li
- Hebei Key Laboratory of Soil Ecology, Centre for Agricultural Resources Research, Institute of Genetics and Developmental BiologyChinese Academy of SciencesShijiazhuangChina
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Dong L, Zheng Q, Cheng Y, Zhou M, Wang M, Xu J, Xu Z, Wu G, Yu Y, Ye L, Feng Z. Gut Microbial Characteristics of Adult Patients With Epilepsy. Front Neurosci 2022; 16:803538. [PMID: 35250450 PMCID: PMC8888681 DOI: 10.3389/fnins.2022.803538] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 01/03/2022] [Indexed: 01/01/2023] Open
Abstract
ObjectiveTo characterize the intestinal flora of patients with epilepsy and its correlation with epilepsy.MethodsPatients with ages > 18 years were consecutively enrolled from the outpatient department, Affiliated Hospital of Guizhou Medical University from January 2018 to December 2019. A total of 71 subjects were recruited, including epilepsy patients (n = 41) as an observation group and patient family members (n = 30) as a control group. Fresh stool specimens of all the subjects were collected. The 16S ribosomal RNA sequencing was analyzed to determine changes in intestinal flora composition and its correlation with epilepsy. Subgroup analysis was then conducted. All patients with epilepsy were divided into an urban group (n = 21) and a rural group (n = 20) according to the region, and bioinformatics analyses were repeated between subgroups.ResultsLEfSe analysis showed that Fusobacterium, Megasphaera, Alloprevotella, and Sutterella had relatively increased abundance in the epilepsy group at the genus level. Correlation analysis suggested that Fusobacterium sp. (r = 0.584, P < 0.01), Fusobacterium mortiferum (r = 0.560, P < 0.01), Ruminococcus gnavus (r = 0.541, P < 0.01), and Bacteroides fragilis (r = 0.506, P < 0.01) were significantly positively correlated with the occurrence of epilepsy (r ≥ 0.5, P < 0.05). PICRUSt function prediction analysis showed that there were significant differences in 16 pathways between the groups at level 3. Comparing the rural group with the urban group, Proteobacteria increased at the phylum level and Escherichia coli, Fusobacterium varium, Prevotella stercorea, and Prevotellaceae bacterium DJF VR15 increased at the species level in the rural group.ConclusionThere were significant differences in the composition and functional pathways of gut flora between epilepsy patients and patient family members. The Fusobacterium may become a potential biomarker for the diagnosis of epilepsy.
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Affiliation(s)
- Lian Dong
- Department of Neurology, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Qian Zheng
- Department of Neurology, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Yongran Cheng
- School of Public Health, Hangzhou Medical College, Hangzhou, China
| | - Mengyun Zhou
- Department of Molecular and Cellular Physiology, Shinshu University School of Medicine, Nagano, Japan
| | - Mingwei Wang
- Department of Cardiology, Affiliated Hospital of Hangzhou Normal University, Hangzhou, China
| | - Jianwei Xu
- National Guizhou Joint Engineering Laboratory for Cell Engineering and Biomedicine Technique, Guizhou Province Key Laboratory of Regenerative Medicine, Center for Tissue Engineering and Stem Cell Research, Guizhou Medical University, Guiyang, China
| | - Zucai Xu
- Department of Neurology, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Guofeng Wu
- Department of Neurology, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Yunli Yu
- Department of Neurology, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Lan Ye
- The Medical Function Laboratory of Experimental Teaching Center of Basic Medicine, Guizhou Medical University, Guiyang, China
- *Correspondence: Lan Ye,
| | - Zhanhui Feng
- Department of Neurology, Affiliated Hospital of Guizhou Medical University, Guiyang, China
- Zhanhui Feng,
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Gao S, Zhao LH, Tian X, Kong MW, He JQ, Ge XC, Liu XY, Feng ZB, Gao Y. Characteristics of Gut Microbiota in Female Patients with Diabetic Microvascular Complications. J Diabetes Res 2022; 2022:2980228. [PMID: 36339086 PMCID: PMC9633191 DOI: 10.1155/2022/2980228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 09/08/2022] [Accepted: 09/27/2022] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE To explore the characteristics and analyze the gut microbiota in female patients with diabetic microvascular complications (DMC). METHODS Thirty-seven female patients with type 2 diabetes mellitus (T2DM) were included in the study. These patients were divided into DM group with microvascular complications (T2DM-MC, n = 17) and no microvascular complications group (T2DM-0, n = 20). Patients in the microvascular group presented with the involvement of at least one of the following: kidney, retinal, or peripheral nerves. Using real-time fluorescence quantitative polymerase chain reaction, fecal samples from the two groups were tested for Bacteroides, Prevotella, Bifidobacterium spp, Lactobacillus, Faecalibacterium prausnitzii, Enterococcus spp, Eubacterium rectale, Veillonellaceae, Clostridium leptum, and Roseburia inulinivorans. Levels of fasting and 2 h postprandial blood glucose, glycosylated hemoglobin (HbA1c), lipids, and creatinine were determined to explore the correlation between gut microbiota and blood sugar. Mann-Whitney U test was used to analyze the differences between the two groups. Spearman correlation analysis was used to determine the correlation between gut microbiota and blood glucose. Multifactor logistic regression was used to analyze the risk factors for DMC. RESULTS The HbA1c levels in the T2DM-MC group were higher than those in the T2DM-0 group. The abundances of Bacteroides and Enterococcus spp in the T2DM-MC group were higher than that in the T2DM-0 group. The abundances of Bacteroides and Enterococcus spp in the T2DM-MC group were lower than that in the T2DM-0 group. Spearman's correlation analysis showed that Bacteroides, Prevotella, Lactobacillus, C. leptum, and R. inulinivorans were related to the levels of HbA1c or blood glucose (p < 0.05). Logistic regression analysis showed that after adjusting for confounding factors such as age, body mass index, family history, HbA1c, hypertension, dyslipidemia, and creatinine, Bacteroides remained an independent risk factor in female patients with DMC. CONCLUSION Gut microbiota is related to blood glucose levels. Female patients with DMC experience gut microbiota disorders. The abundances of Bacteroidesare related to DMC, and the abundances of intestinal flora may affect the blood sugar levels of the body.
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Affiliation(s)
- Shan Gao
- Department of Endocrinology, Affiliated Hospital of Chengde Medical University, Chengde, Hebei, China
| | - Li-hua Zhao
- Department of Endocrinology, Affiliated Hospital of Chengde Medical University, Chengde, Hebei, China
| | - Xue Tian
- Department of Endocrinology, Affiliated Hospital of Chengde Medical University, Chengde, Hebei, China
| | - Mo-wei Kong
- Department of Endocrinology, Affiliated Hospital of Chengde Medical University, Chengde, Hebei, China
| | - Jian-qiu He
- Department of Endocrinology, Affiliated Hospital of Chengde Medical University, Chengde, Hebei, China
| | - Xiao-chun Ge
- Department of Endocrinology, Affiliated Hospital of Chengde Medical University, Chengde, Hebei, China
| | - Xiao-yan Liu
- Department of Endocrinology, Affiliated Hospital of Chengde Medical University, Chengde, Hebei, China
| | - Zeng-bin Feng
- Department of Cardiac Surgery, Affiliated Hospital of Chengde Medical University, Chengde, Hebei, China
| | - Yu Gao
- Department of Endocrinology, Affiliated Hospital of Chengde Medical University, Chengde, Hebei, China
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Hong J, Fu T, Liu W, Du Y, Min C, Lin D. Specific alterations of gut microbiota in diabetic microvascular complications: A systematic review and meta-analysis. Front Endocrinol (Lausanne) 2022; 13:1053900. [PMID: 36545341 PMCID: PMC9761769 DOI: 10.3389/fendo.2022.1053900] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 11/11/2022] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND The role of gut microbiota in diabetes mellitus (DM) and its complications has been widely accepted. However, the alternation of gut microbiota in diabetic microvascular complications (DC) remains to be determined. METHODS Publications (till August 20th, 2022) on gut microbiota in patients with DC were retrieved from PubMed, Web of Science, Embase and Cochrane. Review Manager 5.3 was performed to estimate the standardized mean difference (SMD) and 95% confidence interval (CI) and calculate alpha diversity indices and the relative abundance of gut microbiota between patients in DC v.s. DM and DC v.s. healthy controls (HC). RESULTS We included 13 studies assessing 329 patients with DC, 232 DM patients without DC, and 241 HC. Compared to DM, patients with DC shared a significantly lower Simpson index (SMD = -0.59, 95% CI [-0.82, -0.36], p < 0.00001), but a higher ACE index (SMD = 0.42, 95% CI[0.11, 0.74], p = 0.009). Compared to HC, DC patients held a lower ACE index (SMD = -0.61, 95% CI[-1.20, -0.02], p = 0.04). The relative abundances of phylum Proteobacteria (SMD = 0.03, 95% CI[0.01, 0.04], p = 0.003, v.s. HC) and genus Klebsiella (SMD = 0.00, 95% CI[0.00, 0.00], p < 0.00001, v.s. HC) were enriched, accompanying with depleted abundances of phylum Firmicutes (SMD = -0.06, 95% CI[-0.11, -0.01], p = 0.02, v.s. HC), genera Bifidobacterium (SMD = -0.01, 95% CI[-0.02,-0.01], p < 0.0001, v.s. DM), Faecalibacterium (SMD = -0.01, 95% CI[-0.02, -0.00], p = 0.009, v.s. DM; SMD = -0.02, 95% CI[-0.02, -0.01], p < 0.00001, v.s. HC) and Lactobacillus (SMD = 0.00, 95% CI[-0.00, -0.00], p < 0.00001, v.s. HC) in DC. CONCLUSIONS Gut microbiota perturbations with the depletion of alpha diversity and certain short-chain fatty acids (SCFAs)-producing bacteria were associated with the pathology of DC. Therefore, gut microbiota might serve as a promising approach for the diagnosis and treatment of DC. Further investigations are required to study the mechanisms by which gut dysbiosis acts on the onset and progression of DC.
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Affiliation(s)
- Jinni Hong
- Department of Traditional Chinese Medicine, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- Department of Traditional Chinese Medicine Guangdong Provincial Institute of Geriatric, Guangzhou, China
- *Correspondence: Jinni Hong, ; Cunyun Min, ; Datao Lin,
| | - Tingting Fu
- Department of Traditional Chinese Medicine, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- Department of Traditional Chinese Medicine Guangdong Provincial Institute of Geriatric, Guangzhou, China
| | - Weizhen Liu
- Department of Traditional Chinese Medicine, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- Department of Traditional Chinese Medicine Guangdong Provincial Institute of Geriatric, Guangzhou, China
| | - Yu Du
- Department of Traditional Chinese Medicine, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- Department of Traditional Chinese Medicine Guangdong Provincial Institute of Geriatric, Guangzhou, China
| | - Cunyun Min
- Department of Traditional Chinese Medicine, Guangdong Provincial People’s Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
- Department of Traditional Chinese Medicine Guangdong Provincial Institute of Geriatric, Guangzhou, China
- *Correspondence: Jinni Hong, ; Cunyun Min, ; Datao Lin,
| | - Datao Lin
- Department of Parasitology, Zhongshan School of Medicine, Sun Yat-sen University, Guangzhou, China
- *Correspondence: Jinni Hong, ; Cunyun Min, ; Datao Lin,
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27
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Iatcu CO, Steen A, Covasa M. Gut Microbiota and Complications of Type-2 Diabetes. Nutrients 2021; 14:nu14010166. [PMID: 35011044 PMCID: PMC8747253 DOI: 10.3390/nu14010166] [Citation(s) in RCA: 137] [Impact Index Per Article: 45.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 12/24/2021] [Accepted: 12/29/2021] [Indexed: 12/12/2022] Open
Abstract
The gut microbiota has been linked to the emergence of obesity, metabolic syndrome and the onset of type 2 diabetes through decreased glucose tolerance and insulin resistance. Uncontrolled diabetes can lead to serious health consequences such as impaired kidney function, blindness, stroke, myocardial infarction and lower limb amputation. Despite a variety of treatments currently available, cases of diabetes and resulting complications are on the rise. One promising new approach to diabetes focuses on modulating the gut microbiota with probiotics, prebiotics, synbiotics and fecal microbial transplantation. Differences in gut microbiota composition have been observed in preclinical animal models as well as patients with type 2 diabetes and complications such as diabetic nephropathy, diabetic retinopathy, diabetic neuropathy, cerebrovascular disease, coronary heart disease and peripheral artery disease compared to healthy controls. Severity of gut microbiota dysbiosis was associated with disease severity and restoration with probiotic administration in animal models and human patients has been associated with improvement of symptoms and disease progression. Characterizing the gut microbiota dysbiosis in different diseases and determining a causal relationship between the gut microbiota and disease can be beneficial in formulating therapeutic interventions for type 2 diabetes and associated complications. In this review, we present the most important findings regarding the role of the gut microbiota in type 2 diabetes and chronic complications as well as their underlying mechanisms.
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Affiliation(s)
- Camelia Oana Iatcu
- College of Medicine and Biological Sciences, Stefan cel Mare University of Suceava, 720229 Suceava, Romania;
- College of Medicine, “Grigore T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Aimee Steen
- Department of Basic Medical Sciences, College of Osteopathic Medicine, Western University of Health Sciences, Pomona, CA 91766, USA;
| | - Mihai Covasa
- College of Medicine and Biological Sciences, Stefan cel Mare University of Suceava, 720229 Suceava, Romania;
- Department of Basic Medical Sciences, College of Osteopathic Medicine, Western University of Health Sciences, Pomona, CA 91766, USA;
- Correspondence:
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28
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Fan X, Chen Y, Liu Y, Hu L. First Case of Bloodstream Infection Caused by Ruminococcus gnavus in an 85 Year Old Man in China. Lab Med 2021; 53:e36-e39. [PMID: 34480169 DOI: 10.1093/labmed/lmab070] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Ruminococcus gnavus (R. gnavus) is a gram positive anaerobe and a member of the normal intestinal flora of humans. Here, we present a case study of bloodstream infection caused by R. gnavus in an 85 year old man. We identified R. gnavus using target DNA sequencing. The patient was treated with intravenous meropenem and ceftriaxone based on antimicrobial susceptibility tests. He recovered well and was discharged.
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Affiliation(s)
- Xin Fan
- Department of Dermatology, Ningbo First Hospital, Ningbo, Zhejiang, China
| | - Yejin Chen
- Department of Clinical Laboratory, No. 9 Hospital of Ningbo, Zhejiang, China
| | - Yanqing Liu
- Department of Clinical Laboratory, Ningbo First Hospital, Ningbo, Zhejiang, China
| | - Liqing Hu
- Department of Clinical Laboratory, Ningbo First Hospital, Ningbo, Zhejiang, China
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29
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Nogal A, Louca P, Zhang X, Wells PM, Steves CJ, Spector TD, Falchi M, Valdes AM, Menni C. Circulating Levels of the Short-Chain Fatty Acid Acetate Mediate the Effect of the Gut Microbiome on Visceral Fat. Front Microbiol 2021; 12:711359. [PMID: 34335546 PMCID: PMC8320334 DOI: 10.3389/fmicb.2021.711359] [Citation(s) in RCA: 86] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Accepted: 06/21/2021] [Indexed: 12/12/2022] Open
Abstract
Background Acetate is a short-chain fatty acid (SCFA) produced by gut bacteria, which has been implicated in cardio-metabolic health. Here we examine the relationships of circulating acetate levels with gut microbiome composition and diversity and with visceral fat in a large population-based cohort. Results Microbiome alpha-diversity was positively correlated with circulating acetate levels (Shannon, Beta [95%CI] = 0.12 [0.06, 0.18], P = 0.002) after adjustment for covariates. Six serum acetate-associated bacterial genera were also identified, including positive correlations with Coprococcus, Barnesiella, Ruminococcus, and Ruminococcaceae NK4A21 and negative correlations were observed with Lachnoclostridium and Bacteroides. We also identified a correlation between visceral fat and serum acetate levels (Beta [95%CI] = −0.07 [−0.11, −0.04], P = 2.8 × 10–4) and between visceral fat and Lachnoclostridium (Beta [95%CI] = 0.076 [0.042, 0.11], P = 1.44 × 10–5). Formal mediation analysis revealed that acetate mediates ∼10% of the total effect of Lachnoclostridium on visceral fat. The taxonomic diversity showed that Lachnoclostridium and Coprococcus comprise at least 18 and 9 species, respectively, including novel bacterial species. By predicting the functional capabilities, we found that Coprococcus spp. present pathways involved in acetate production and metabolism of vitamins B, whereas we identified pathways related to the biosynthesis of trimethylamine (TMA) and CDP-diacylglycerol in Lachnoclostridium spp. Conclusions Our data indicates that gut microbiota composition and diversity may influence circulating acetate levels and that acetate might exert benefits on certain cardio-metabolic disease risk by decreasing visceral fat. Coprococcus may play an important role in host health by its production of vitamins B and SCFAs, whereas Lachnoclostridium might have an opposing effect by influencing negatively the circulating levels of acetate and being involved in the biosynthesis of detrimental lipid compounds.
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Affiliation(s)
- Ana Nogal
- Department of Twin Research and Genetic Epidemiology, King's College London, London, United Kingdom
| | - Panayiotis Louca
- Department of Twin Research and Genetic Epidemiology, King's College London, London, United Kingdom
| | - Xinyuan Zhang
- Department of Twin Research and Genetic Epidemiology, King's College London, London, United Kingdom
| | - Philippa M Wells
- Department of Twin Research and Genetic Epidemiology, King's College London, London, United Kingdom
| | - Claire J Steves
- Department of Twin Research and Genetic Epidemiology, King's College London, London, United Kingdom
| | - Tim D Spector
- Department of Twin Research and Genetic Epidemiology, King's College London, London, United Kingdom
| | - Mario Falchi
- Department of Twin Research and Genetic Epidemiology, King's College London, London, United Kingdom
| | - Ana M Valdes
- Department of Twin Research and Genetic Epidemiology, King's College London, London, United Kingdom.,Nottingham NIHR Biomedical Research Centre at the School of Medicine, Nottingham City Hospital, University of Nottingham, Nottingham, United Kingdom
| | - Cristina Menni
- Department of Twin Research and Genetic Epidemiology, King's College London, London, United Kingdom
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30
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Huang Y, Wang Z, Ma H, Ji S, Chen Z, Cui Z, Chen J, Tang S. Dysbiosis and Implication of the Gut Microbiota in Diabetic Retinopathy. Front Cell Infect Microbiol 2021; 11:646348. [PMID: 33816351 PMCID: PMC8017229 DOI: 10.3389/fcimb.2021.646348] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 03/02/2021] [Indexed: 12/16/2022] Open
Abstract
The pathogenesis of type 2 diabetes mellitus (T2DM) is commonly associated with altered gut bacteria. However, whether the microbial dysbiosis that exists in human diabetic patients with or without retinopathy is different remains largely unknown. Here, we collected clinical information and fecal samples from 75 participants, including 25 diabetic patients without retinopathy (DM), 25 diabetic patients with retinopathy (DR), and 25 healthy controls (HC). The gut microbial composition in the three groups was analyzed using 16S ribosomal RNA (rRNA) gene sequencing. Microbial structure and composition differed in the three groups. The α and β diversities in both the DM and DR groups were reduced compared with those in the HC group. Blautia was the most abundant genus, especially in the DM group. In addition, increased levels of Bifidobacterium and Lactobacillus and decreased levels of Escherichia-Shigella, Faecalibacterium, Eubacterium_hallii_group and Clostridium genera were observed in the DM and DR groups compared with the HC group. Furthermore, a biomarker set of 25 bacterial families, which could distinguish patients in the DR group from those in the DM and HC groups was identified, with the area under the curve values ranging from 0.69 to 0.85. Of note, Pasteurellaceae, which was increased in DM and decreased in DR compared with HC, generated a high AUC (0.74) as an individual predictive biomarker. Moreover, 14 family biomarkers were associated with fasting blood glucose levels or diabetes, with most of them being negatively correlated. In summary, our study establishes compositional alterations of gut microbiota in DM and DR, suggesting the potential use of gut microbiota as a non-invasive biomarker for clinical and differential diagnosis, as well as identifying potential therapeutic targets of diabetic retinopathy.
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Affiliation(s)
- Yinhua Huang
- Aier School of Ophthalmology, Central South University, Changsha, China.,Aier Eye Institute, Changsha, China
| | - Zhijie Wang
- Aier School of Ophthalmology, Central South University, Changsha, China.,Aier Eye Institute, Changsha, China
| | | | | | | | | | - Jiansu Chen
- Aier School of Ophthalmology, Central South University, Changsha, China.,Aier Eye Institute, Changsha, China.,Key Laboratory for Regenerative Medicine, Ministry of Education, Jinan University, Guangzhou, China.,Institute of Ophthalmology, Medical College, Jinan University, Guangzhou, China
| | - Shibo Tang
- Aier School of Ophthalmology, Central South University, Changsha, China.,Aier Eye Institute, Changsha, China.,CAS Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences, Shanghai, China
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31
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Singh P, Rawat A, Al-Jarrah B, Saraswathi S, Gad H, Elawad M, Hussain K, Hendaus MA, Al-Masri W, Malik RA, Al Khodor S, Akobeng AK. Distinctive Microbial Signatures and Gut-Brain Crosstalk in Pediatric Patients with Coeliac Disease and Type 1 Diabetes Mellitus. Int J Mol Sci 2021; 22:ijms22041511. [PMID: 33546364 PMCID: PMC7913584 DOI: 10.3390/ijms22041511] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 01/22/2021] [Accepted: 01/25/2021] [Indexed: 02/07/2023] Open
Abstract
Coeliac disease (CD) and Type 1 diabetes mellitus (T1DM) are immune-mediated diseases. Emerging evidence suggests that dysbiosis in the gut microbiome plays a role in the pathogenesis of both diseases and may also be associated with the development of neuropathy. The primary goal in this cross-sectional pilot study was to identify whether there are distinct gut microbiota alterations in children with CD (n = 19), T1DM (n = 18) and both CD and T1DM (n = 9) compared to healthy controls (n = 12). Our second goal was to explore the relationship between neuropathy (corneal nerve fiber damage) and the gut microbiome composition. Microbiota composition was determined by 16S rRNA gene sequencing. Corneal confocal microscopy was used to determine nerve fiber damage. There was a significant difference in the overall microbial diversity between the four groups with healthy controls having a greater microbial diversity as compared to the patients. The abundance of pathogenic proteobacteria Shigella and E. coli were significantly higher in CD patients. Differential abundance analysis showed that several bacterial amplicon sequence variants (ASVs) distinguished CD from T1DM. The tissue transglutaminase antibody correlated significantly with a decrease in gut microbial diversity. Furthermore, the Bacteroidetes phylum, specifically the genus Parabacteroides was significantly correlated with corneal nerve fiber loss in the subjects with neuropathic damage belonging to the diseased groups. We conclude that disease-specific gut microbial features traceable down to the ASV level distinguish children with CD from T1DM and specific gut microbial signatures may be associated with small fiber neuropathy. Further research on the mechanisms linking altered microbial diversity with neuropathy are warranted.
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Affiliation(s)
- Parul Singh
- Research Department, Sidra Medicine, Doha 26999, Qatar or (P.S.); (A.R.); (B.A.-J.)
- College of Health & Life Sciences, Hamad Bin Khalifa University (HBKU), Qatar Foundation (QF), Doha 24404, Qatar
| | - Arun Rawat
- Research Department, Sidra Medicine, Doha 26999, Qatar or (P.S.); (A.R.); (B.A.-J.)
| | - Bara Al-Jarrah
- Research Department, Sidra Medicine, Doha 26999, Qatar or (P.S.); (A.R.); (B.A.-J.)
| | - Saras Saraswathi
- Division of Gastroenterology, Hepatology, and Nutrition, Sidra Medicine, Doha 26999, Qatar; (S.S.); (M.E.); (W.A.-M.); (A.K.A.)
| | - Hoda Gad
- Department Medicine, Weill Cornell Medicine-Qatar, Doha 24144, Qatar; (H.G.); (R.A.M.)
| | - Mamoun Elawad
- Division of Gastroenterology, Hepatology, and Nutrition, Sidra Medicine, Doha 26999, Qatar; (S.S.); (M.E.); (W.A.-M.); (A.K.A.)
| | - Khalid Hussain
- Division of Endocrinology, Sidra Medicine, Doha 26999, Qatar;
| | | | - Wesam Al-Masri
- Division of Gastroenterology, Hepatology, and Nutrition, Sidra Medicine, Doha 26999, Qatar; (S.S.); (M.E.); (W.A.-M.); (A.K.A.)
| | - Rayaz A. Malik
- Department Medicine, Weill Cornell Medicine-Qatar, Doha 24144, Qatar; (H.G.); (R.A.M.)
| | - Souhaila Al Khodor
- Research Department, Sidra Medicine, Doha 26999, Qatar or (P.S.); (A.R.); (B.A.-J.)
- Correspondence:
| | - Anthony K. Akobeng
- Division of Gastroenterology, Hepatology, and Nutrition, Sidra Medicine, Doha 26999, Qatar; (S.S.); (M.E.); (W.A.-M.); (A.K.A.)
- Department Medicine, Weill Cornell Medicine-Qatar, Doha 24144, Qatar; (H.G.); (R.A.M.)
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