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Liu X, Mo J, Yang X, Peng L, Zeng Y, Zheng Y, Song G. Causal relationship between gut microbiota and chronic renal failure: a two-sample Mendelian randomization study. Front Microbiol 2024; 15:1356478. [PMID: 38633704 PMCID: PMC11021586 DOI: 10.3389/fmicb.2024.1356478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 03/20/2024] [Indexed: 04/19/2024] Open
Abstract
Background Observational studies and some experimental investigations have indicated that gut microbiota are closely associated with the incidence and progression of chronic renal failure. However, the causal relationship between gut microbiota and chronic renal failure remains unclear. The present study employs a two-sample Mendelian randomization approach to infer the causal relationship between gut microbiota and chronic renal failure at the genetic level. This research aims to determine whether there is a causal effect of gut microbiota on the risk of chronic renal failure, aiming to provide new evidence to support targeted gut therapy for the treatment of chronic renal failure. Methods Employing genome-wide association study (GWAS) data from the public MiBioGen and IEU OpenGWAS platform, a two-sample Mendelian randomization analysis was conducted. The causal relationship between gut microbiota and chronic renal failure was inferred using five different methods: Inverse Variance Weighted, MR-Egger, Weighted Median, Simple Mode, and Weighted Mode. The study incorporated sensitivity analyses that encompassed evaluations for pleiotropy and heterogeneity. Subsequently, the results of the Mendelian randomization analysis underwent a stringent correction for multiple testing, employing the False Discovery Rate method to enhance the validity of our findings. Results According to the results from the Inverse Variance Weighted method, seven bacterial genera show a significant association with the outcome variable chronic renal failure. Of these, Ruminococcus (gauvreauii group) (OR = 0.82, 95% CI = 0.71-0.94, p = 0.004) may act as a protective factor against chronic renal failure, while the genera Escherichia-Shigella (OR = 1.22, 95% CI = 1.08-1.38, p = 0.001), Lactococcus (OR = 1.1, 95% CI = 1.02-1.19, p = 0.013), Odoribacter (OR = 1.23, 95% CI = 1.03-1.49, p = 0.026), Enterorhabdus (OR = 1.14, 95% CI = 1.00-1.29, p = 0.047), Eubacterium (eligens group) (OR = 1.18, 95% CI = 1.02-1.37, p = 0.024), and Howardella (OR = 1.18, 95% CI = 1.09-1.28, p < 0.001) may be risk factors for chronic renal failure. However, after correction for multiple comparisons using False Discovery Rate, only the associations with Escherichia-Shigella and Howardella remain significant, indicating that the other genera have suggestive associations. Sensitivity analyses did not reveal any pleiotropy or heterogeneity. Conclusion Our two-sample Mendelian randomization study suggests that the genera Escherichia-Shigella and Howardella are risk factors for chronic renal failure, and they may serve as potential targets for future therapeutic interventions. However, the exact mechanisms of action are not yet clear, necessitating further research to elucidate their precise roles fully.
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Affiliation(s)
- Xingzheng Liu
- The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Jinying Mo
- The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Xuerui Yang
- The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Ling Peng
- The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine, Shenzhen, China
| | - Youjia Zeng
- Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, China
| | - Yihou Zheng
- Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, China
| | - Gaofeng Song
- Department of Nephrology, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, China
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Schwarz A, Hernandez L, Arefin S, Sartirana E, Witasp A, Wernerson A, Stenvinkel P, Kublickiene K. Sweet, bloody consumption - what we eat and how it affects vascular ageing, the BBB and kidney health in CKD. Gut Microbes 2024; 16:2341449. [PMID: 38686499 PMCID: PMC11062370 DOI: 10.1080/19490976.2024.2341449] [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: 08/07/2023] [Accepted: 04/04/2024] [Indexed: 05/02/2024] Open
Abstract
In today's industrialized society food consumption has changed immensely toward heightened red meat intake and use of artificial sweeteners instead of grains and vegetables or sugar, respectively. These dietary changes affect public health in general through an increased incidence of metabolic diseases like diabetes and obesity, with a further elevated risk for cardiorenal complications. Research shows that high red meat intake and artificial sweeteners ingestion can alter the microbial composition and further intestinal wall barrier permeability allowing increased transmission of uremic toxins like p-cresyl sulfate, indoxyl sulfate, trimethylamine n-oxide and phenylacetylglutamine into the blood stream causing an array of pathophysiological effects especially as a strain on the kidneys, since they are responsible for clearing out the toxins. In this review, we address how the burden of the Western diet affects the gut microbiome in altering the microbial composition and increasing the gut permeability for uremic toxins and the detrimental effects thereof on early vascular aging, the kidney per se and the blood-brain barrier, in addition to the potential implications for dietary changes/interventions to preserve the health issues related to chronic diseases in future.
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Affiliation(s)
- Angelina Schwarz
- Department of Clinical Science, Intervention and Technology, Division of Renal Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Leah Hernandez
- Department of Clinical Science, Intervention and Technology, Division of Renal Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Samsul Arefin
- Department of Clinical Science, Intervention and Technology, Division of Renal Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Elisa Sartirana
- Department of Translational Medicine, Nephrology and Kidney Transplantation Unit, University of Piemonte Orientale, Novara, Italy
| | - Anna Witasp
- Department of Clinical Science, Intervention and Technology, Division of Renal Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Annika Wernerson
- Department of Clinical Science, Intervention and Technology, Division of Renal Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Peter Stenvinkel
- Department of Clinical Science, Intervention and Technology, Division of Renal Medicine, Karolinska Institutet, Stockholm, Sweden
- Department of Renal Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Karolina Kublickiene
- Department of Clinical Science, Intervention and Technology, Division of Renal Medicine, Karolinska Institutet, Stockholm, Sweden
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Cooper TE, Khalid R, Chan S, Craig JC, Hawley CM, Howell M, Johnson DW, Jaure A, Teixeira-Pinto A, Wong G. Synbiotics, prebiotics and probiotics for people with chronic kidney disease. Cochrane Database Syst Rev 2023; 10:CD013631. [PMID: 37870148 PMCID: PMC10591284 DOI: 10.1002/14651858.cd013631.pub2] [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] [Indexed: 10/24/2023]
Abstract
BACKGROUND Chronic kidney disease (CKD) is a major public health problem affecting 13% of the global population. Prior research has indicated that CKD is associated with gut dysbiosis. Gut dysbiosis may lead to the development and/or progression of CKD, which in turn may in turn lead to gut dysbiosis as a result of uraemic toxins, intestinal wall oedema, metabolic acidosis, prolonged intestinal transit times, polypharmacy (frequent antibiotic exposures) and dietary restrictions used to treat CKD. Interventions such as synbiotics, prebiotics, and probiotics may improve the balance of the gut flora by altering intestinal pH, improving gut microbiota balance and enhancing gut barrier function (i.e. reducing gut permeability). OBJECTIVES This review aimed to evaluate the benefits and harms of synbiotics, prebiotics, and probiotics for people with CKD. SEARCH METHODS We searched the Cochrane Kidney and Transplant Register of Studies up to 9 October 2023 through contact with the Information Specialist using search terms relevant to this review. Studies in the Register are identified through searches of CENTRAL, MEDLINE, and EMBASE, conference proceedings, the International Clinical Trials Registry Platform (ICTRP) Search Portal and ClinicalTrials.gov. SELECTION CRITERIA We included randomised controlled trials (RCTs) measuring and reporting the effects of synbiotics, prebiotics, or probiotics in any combination and any formulation given to people with CKD (CKD stages 1 to 5, including dialysis and kidney transplant). Two authors independently assessed the retrieved titles and abstracts and, where necessary, the full text to determine which satisfied the inclusion criteria. DATA COLLECTION AND ANALYSIS Data extraction was independently carried out by two authors using a standard data extraction form. Summary estimates of effect were obtained using a random-effects model, and results were expressed as risk ratios (RR) and their 95% confidence intervals (CI) for dichotomous outcomes, and mean difference (MD) or standardised mean difference (SMD) and 95% CI for continuous outcomes. The methodological quality of the included studies was assessed using the Cochrane risk of bias tool. Data entry was carried out by one author and cross-checked by another. Confidence in the evidence was assessed using the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach. MAIN RESULTS Forty-five studies (2266 randomised participants) were included in this review. Study participants were adults (two studies in children) with CKD ranging from stages 1 to 5, with patients receiving and not receiving dialysis, of whom half also had diabetes and hypertension. No studies investigated the same synbiotic, prebiotic or probiotic of similar strains, doses, or frequencies. Most studies were judged to be low risk for selection bias, performance bias and reporting bias, unclear risk for detection bias and for control of confounding factors, and high risk for attrition and other biases. Compared to prebiotics, it is uncertain whether synbiotics improve estimated glomerular filtration rate (eGFR) at four weeks (1 study, 34 participants: MD -3.80 mL/min/1.73 m², 95% CI -17.98 to 10.38), indoxyl sulfate at four weeks (1 study, 42 participants: MD 128.30 ng/mL, 95% CI -242.77 to 499.37), change in gastrointestinal (GI) upset (borborymgi) at four weeks (1 study, 34 participants: RR 15.26, 95% CI 0.99 to 236.23), or change in GI upset (Gastrointestinal Symptom Rating Scale) at 12 months (1 study, 56 participants: MD 0.00, 95% CI -0.27 to 0.27), because the certainty of the evidence was very low. Compared to certain strains of prebiotics, it is uncertain whether a different strain of prebiotics improves eGFR at 12 weeks (1 study, 50 participants: MD 0.00 mL/min, 95% CI -1.73 to 1.73), indoxyl sulfate at six weeks (2 studies, 64 participants: MD -0.20 μg/mL, 95% CI -1.01 to 0.61; I² = 0%) or change in any GI upset, intolerance or microbiota composition, because the certainty of the evidence was very low. Compared to certain strains of probiotics, it is uncertain whether a different strain of probiotic improves eGFR at eight weeks (1 study, 30 participants: MD -0.64 mL/min, 95% CI -9.51 to 8.23; very low certainty evidence). Compared to placebo or no treatment, it is uncertain whether synbiotics improve eGFR at six or 12 weeks (2 studies, 98 participants: MD 1.42 mL/min, 95% CI 0.65 to 2.2) or change in any GI upset or intolerance at 12 weeks because the certainty of the evidence was very low. Compared to placebo or no treatment, it is uncertain whether prebiotics improves indoxyl sulfate at eight weeks (2 studies, 75 participants: SMD -0.14 mg/L, 95% CI -0.60 to 0.31; very low certainty evidence) or microbiota composition because the certainty of the evidence is very low. Compared to placebo or no treatment, it is uncertain whether probiotics improve eGFR at eight, 12 or 15 weeks (3 studies, 128 participants: MD 2.73 mL/min, 95% CI -2.28 to 7.75; I² = 78%), proteinuria at 12 or 24 weeks (1 study, 60 participants: MD -15.60 mg/dL, 95% CI -34.30 to 3.10), indoxyl sulfate at 12 or 24 weeks (2 studies, 83 participants: MD -4.42 mg/dL, 95% CI -9.83 to 1.35; I² = 0%), or any change in GI upset or intolerance because the certainty of the evidence was very low. Probiotics may have little or no effect on albuminuria at 12 or 24 weeks compared to placebo or no treatment (4 studies, 193 participants: MD 0.02 g/dL, 95% CI -0.08 to 0.13; I² = 0%; low certainty evidence). For all comparisons, adverse events were poorly reported and were minimal (flatulence, nausea, diarrhoea, abdominal pain) and non-serious, and withdrawals were not related to the study treatment. AUTHORS' CONCLUSIONS We found very few studies that adequately test biotic supplementation as alternative treatments for improving kidney function, GI symptoms, dialysis outcomes, allograft function, patient-reported outcomes, CVD, cancer, reducing uraemic toxins, and adverse effects. We are not certain whether synbiotics, prebiotics, or probiotics are more or less effective compared to one another, antibiotics, or standard care for improving patient outcomes in people with CKD. Adverse events were uncommon and mild.
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Affiliation(s)
- Tess E Cooper
- Sydney School of Public Health, The University of Sydney, Sydney, Australia
| | - Rabia Khalid
- Sydney School of Public Health, The University of Sydney, Sydney, Australia
- Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
| | - Samuel Chan
- Department of Nephrology, Princess Alexandra Hospital, Brisbane, Australia
| | - Jonathan C Craig
- Cochrane Kidney and Transplant, Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
- College of Medicine and Public Health, Flinders University, Adelaide, Australia
| | - Carmel M Hawley
- Department of Nephrology, Princess Alexandra Hospital, Brisbane, Australia
| | - Martin Howell
- Sydney School of Public Health, The University of Sydney, Sydney, Australia
- Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
| | - David W Johnson
- Department of Nephrology, Princess Alexandra Hospital, Brisbane, Australia
| | - Allison Jaure
- Sydney School of Public Health, The University of Sydney, Sydney, Australia
- Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
| | - Armando Teixeira-Pinto
- Sydney School of Public Health, The University of Sydney, Sydney, Australia
- Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
| | - Germaine Wong
- Sydney School of Public Health, The University of Sydney, Sydney, Australia
- Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
- Centre for Transplant and Renal Research, Westmead Hospital, Westmead, Australia
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Chávez-Íñiguez JS, Ibarra‑Estrada M, Gallardo-González AM, Cisneros-Hernández A, Granado RCD, Chávez-Alonso G, Hernández-Barajas EM, Romero-Muñoz AC, Ramos-Avellaneda F, Prieto-Magallanes ML, Plascencia-Cruz M, Tanaka-Gutiérrez JA, Pérez-Hernández C, Navarro-Blackaller G, Medina-González R, Alcantar-Vallin L, Renoirte-López K, García-García G. Probiotics in septic acute kidney injury, a double blind, randomized control trial. Ren Fail 2023; 45:2260003. [PMID: 37724527 PMCID: PMC10512773 DOI: 10.1080/0886022x.2023.2260003] [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: 09/12/2023] [Indexed: 09/21/2023] Open
Abstract
INTRODUCTION During acute kidney injury (AKI) due to sepsis, the intestinal microbiota changes to dysbiosis, which affects the kidney function recovery (KFR) and amplifies the injury. Therefore, the administration of probiotics could improve dysbiosis and thereby increase the probability of KFR. METHODS In this double-blind clinical trial, patients with AKI associated with sepsis were randomized (1:1) to receive probiotics or placebo for 7 consecutive days, with the objectives of evaluate the effect on KFR, mortality, kidney replacement therapy (KRT), urea, urine volume, serum electrolytes and adverse events at day 7. RESULTS From February 2019 to March 2022, a total of 92 patients were randomized, 48 to the Probiotic and 44 to Placebo group. When comparing with placebo, those in the Probiotics did not observe a higher KFR (HR 0.93, 0.52-1.68, p = 0.81), nor was there a benefit in mortality at 6 months (95% CI 0.32-1.04, p = 0.06). With probiotics, urea values decreased significantly, an event not observed with placebo (from 154 to 80 mg/dl, p = 0.04 and from 130 to 109 mg/dl, p = 0.09, respectively). Urinary volume, need for KRT, electrolyte abnormalities, and adverse events were similar between groups. (ClinicalTrial.gov NCT03877081) (registered 03/15/2019). CONCLUSION In AKI related to sepsis, probiotics for 7 consecutive days did not increase the probability of KFR, nor did other variables related to clinical improvement, although they were safe.
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Affiliation(s)
- Jonathan S. Chávez-Íñiguez
- Nephrology Service, Hospital Civil de Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, Mexico
- Health Sciences Center, University of Guadalajara, Guadalajara, Jalisco, Mexico
| | - Miguel Ibarra‑Estrada
- Intensive Care Unit, Hospital Civil de Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, Mexico
| | - Alejandro Martínez Gallardo-González
- Nephrology Service, Hospital Civil de Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, Mexico
- Health Sciences Center, University of Guadalajara, Guadalajara, Jalisco, Mexico
| | | | - Rolando Claure-Del Granado
- Division of Nephrology, Hospital Obrero #2 – C.N.S, Universidad Mayor de San Simon School of Medicine, Cochabamba, Bolivia
| | - Gael Chávez-Alonso
- Health Sciences Center, University of Guadalajara, Guadalajara, Jalisco, Mexico
| | | | - Alexia C. Romero-Muñoz
- Nephrology Service, Hospital Civil de Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, Mexico
- Health Sciences Center, University of Guadalajara, Guadalajara, Jalisco, Mexico
| | - Fidel Ramos-Avellaneda
- Nephrology Service, Hospital Civil de Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, Mexico
- Health Sciences Center, University of Guadalajara, Guadalajara, Jalisco, Mexico
| | - Manuel L. Prieto-Magallanes
- Nephrology Service, Hospital Civil de Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, Mexico
- Health Sciences Center, University of Guadalajara, Guadalajara, Jalisco, Mexico
| | - Marcela Plascencia-Cruz
- Nephrology Service, Hospital Civil de Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, Mexico
- Health Sciences Center, University of Guadalajara, Guadalajara, Jalisco, Mexico
| | | | | | | | - Ramón Medina-González
- Nephrology Service, Hospital Civil de Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, Mexico
| | - Luz Alcantar-Vallin
- Nephrology Service, Hospital Civil de Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, Mexico
- Health Sciences Center, University of Guadalajara, Guadalajara, Jalisco, Mexico
| | - Karina Renoirte-López
- Nephrology Service, Hospital Civil de Guadalajara Fray Antonio Alcalde, Guadalajara, Jalisco, Mexico
- Health Sciences Center, University of Guadalajara, Guadalajara, Jalisco, Mexico
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Kim KR, Kim SM, Kim JH. A pilot study of alterations of the gut microbiome in canine chronic kidney disease. Front Vet Sci 2023; 10:1241215. [PMID: 37691637 PMCID: PMC10484476 DOI: 10.3389/fvets.2023.1241215] [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: 06/16/2023] [Accepted: 08/11/2023] [Indexed: 09/12/2023] Open
Abstract
Introduction Gut dysbiosis has been noted in humans and animals with chronic kidney disease (CKD). However, little is known about the gut microbiome in canine patients with CKD. This study aimed to analyze and compare the gut microbiome profiles of healthy and CKD dogs, including differences in the gut microbiome between each CKD stage. Methods The study was conducted on 29 client-owned dogs who underwent physical examination, complete blood count (CBC), serum biochemistry, and urinalysis. The gut microbiome profile of healthy dogs (n = 10) and dogs with CKD (n = 19) was analyzed employing 16S rRNA sequencing. Results Significant differences were seen in the composition of the gut microbiome, with increased operational taxonomic units from the phylum Proteobacteria (p = 0.035), family Enterobacteriaceae (p < 0.001), and genus Enterococcus (p = 0.002) in dogs with CKD, and a decrease in the genus Ruminococcus (p = 0.007). Furthermore, an increase in both the progression of CKD and abundance of genus Klebsiella (Jonckheere-Terpstra test statistic value (JT) = 2.852, p = 0.004) and Clostridium (JT = 2.018, p = 0.044) was observed. Discussion Our study demonstrated that in dogs with CKD, the composition of the gut microbiome varied depending on the stage of CKD. Alterations in gut microbiome composition observed in CKD patients are characterized by an increase in proteolytic bacteria and a decrease in saccharolytic bacteria. These findings suggest specific gut microbiota could be targeted for clinical management of uremic dogs with CKD.
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Affiliation(s)
- Kyung-Ryung Kim
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
| | | | - Jung-Hyun Kim
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University, Seoul, Republic of Korea
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Golchin A, Ranjbarvan P, Parviz S, Shokati A, Naderi R, Rasmi Y, Kiani S, Moradi F, Heidari F, Saltanatpour Z, Alizadeh A. The role of probiotics in tissue engineering and regenerative medicine. Regen Med 2023; 18:635-657. [PMID: 37492007 DOI: 10.2217/rme-2022-0209] [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] [Indexed: 07/27/2023] Open
Abstract
Tissue engineering and regenerative medicine (TERM) as an emerging field is a multidisciplinary science and combines basic sciences such as biomaterials science, biology, genetics and medical sciences to achieve functional TERM-based products to regenerate or replace damaged or diseased tissues or organs. Probiotics are useful microorganisms which have multiple effective functions on human health. They have some immunomodulatory and biocompatibility effects and improve wound healing. In this article, we describe the latest findings on probiotics and their pro-healing properties on various body systems that are useable in regenerative medicine. Therefore, this review presents a new perspective on the therapeutic potential of probiotics for TERM.
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Affiliation(s)
- Ali Golchin
- Cellular & Molecular Research Center, Cellular & Molecular Medicine Research Institute, Urmia University of Medical Sciences, Urmia, 57157993313, Iran
- Department of Clinical Biochemistry & Applied Cell Sciences, School of Medicine, Urmia University of Medical Sciences, Urmia, 57157993313, Iran
| | - Parviz Ranjbarvan
- Cellular & Molecular Research Center, Cellular & Molecular Medicine Research Institute, Urmia University of Medical Sciences, Urmia, 57157993313, Iran
- Department of Clinical Biochemistry & Applied Cell Sciences, School of Medicine, Urmia University of Medical Sciences, Urmia, 57157993313, Iran
| | - Shima Parviz
- Department of Tissue Engineering & Applied cell sciences, School of Advanced Technologies in Medicine, Shiraz University of Medical Sciences, Shiraz, 71348-14336, Iran
| | - Amene Shokati
- Department of Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, 1417755469, Iran
| | - Roya Naderi
- Neurophysiology Research center & Department of Physiology, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, 57157993313, Iran
| | - Yousef Rasmi
- Cellular & Molecular Research Center & Department of Biochemistry, Faculty of Medicine, Urmia University of Medical Sciences, Urmia, 57157993313, Iran
| | - Samaneh Kiani
- Department of Tissue Engineering & Regenerative Medicine, School of Advanced Technologies in Medicine, Mazandaran University of Medical Sciences, Sari, 48157-33971, Iran
| | - Faezeh Moradi
- Department of Tissue engineering, Medical Sciences Faculty, Tarbiat Modares University, Tehran, 14117-13116, Iran
| | - Fahimeh Heidari
- Department of Molecular Medicine, School of Advanced Medical Sciences & Technologies, Shiraz University of Medical Sciences, Shiraz, 71348-14336, Iran
- Shiraz Institute for Cancer Research, School of Medicine, Shiraz University of Medical Sciences, Shiraz, 71348-14336, Iran
| | - Zohreh Saltanatpour
- Pediatric Cell & Gene Therapy Research Center, Gene, Cell & Tissue Research Institute, Tehran University of Medical Sciences, Tehran, 1417755469, Iran
- Stem Cell & Regenerative Medicine Center of Excellence, Tehran University of Medical Sciences, Tehran, 1417755469, Iran
| | - Akram Alizadeh
- Nervous System Stem Cells Research Center & Department of Tissue Engineering & Applied Cell Sciences, Faculty of Medicine, Semnan University of Medical Sciences, Semnan, 35147-99422, Iran
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Sciarra F, Franceschini E, Campolo F, Venneri MA. The Diagnostic Potential of the Human Blood Microbiome: Are We Dreaming or Awake? Int J Mol Sci 2023; 24:10422. [PMID: 37445600 DOI: 10.3390/ijms241310422] [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: 05/03/2023] [Revised: 06/01/2023] [Accepted: 06/19/2023] [Indexed: 07/15/2023] Open
Abstract
Human blood has historically been considered a sterile environment. Recently, a thriving microbiome dominated by Firmicutes, Actinobacteria, Proteobacteria, and Bacteroidetes phyla was detected in healthy blood. The localization of these microbes is restricted to some blood cell populations, particularly the peripheral blood mononuclear cells and erythrocytes. It was hypothesized that the blood microbiome originates from the skin-oral-gut axis. In addition, many studies have evaluated the potential of blood microbiome dysbiosis as a prognostic marker in cardiovascular diseases, cirrhosis, severe liver fibrosis, severe acute pancreatitis, type 2 diabetes, and chronic kidney diseases. The present review aims to summarize current findings and most recent evidence in the field.
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Affiliation(s)
- Francesca Sciarra
- Department of Experimental Medicine, Sapienza University of Rome, 00185 Rome, Italy
| | - Edoardo Franceschini
- Department of Experimental Medicine, Sapienza University of Rome, 00185 Rome, Italy
| | - Federica Campolo
- Department of Experimental Medicine, Sapienza University of Rome, 00185 Rome, Italy
| | - Mary Anna Venneri
- Department of Experimental Medicine, Sapienza University of Rome, 00185 Rome, Italy
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Hayeeawaema F, Muangnil P, Jiangsakul J, Tipbunjong C, Huipao N, Khuituan P. A novel model of adenine-induced chronic kidney disease-associated gastrointestinal dysfunction in mice: The gut-kidney axis. Saudi J Biol Sci 2023; 30:103660. [PMID: 37213695 PMCID: PMC10193294 DOI: 10.1016/j.sjbs.2023.103660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Revised: 03/31/2023] [Accepted: 04/21/2023] [Indexed: 05/23/2023] Open
Abstract
Although constipation is a common complication of chronic kidney disease (CKD), there is no animal model that can be used to study the association between renal impairment and gastrointestinal function without interfering with the gastrointestinal tract of the model. Therefore, we determined whether adenine could induce CKD in association with gastrointestinal dysfunction. Six-week-old ICR mice were intraperitoneally injected with saline, 25, 50, or 75 mg adenine/kg body weight for 21 days. Blood urea nitrogen (BUN), plasma creatinine, and renal histopathology were evaluated. Defecation status was evaluated from defecation frequency and fecal water content. Colonic smooth muscle contraction was measured by the organ bath technique, and transepithelial electrical resistance (TEER) was measured using an Ussing chamber. In the 50 mg/kg treatment group, BUN and creatinine were significantly increased compared with control, and inflammatory cell infiltration, glomerular necrosis, tubular dilatation, and interstitial fibrosis were observed in renal tissues. Mice in this group also showed a significant decrease in defecation frequency, fecal water content, colonic motility index, and TEER. Overall, 50 mg/kg of adenine was the best dose to induce CKD with associated constipation and intestinal barrier impairment. Therefore, this adenine administration model can be recommended for CKD-associated gastrointestinal dysfunction research.
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Affiliation(s)
- Fittree Hayeeawaema
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Songkhla, Thailand
- Gut Biology and Microbiota Research Unit, Prince of Songkla University, Songkhla, Thailand
| | - Paradorn Muangnil
- Gut Biology and Microbiota Research Unit, Prince of Songkla University, Songkhla, Thailand
- Faculty of Veterinary Science, Prince of Songkla University, Thailand
| | | | - Chittipong Tipbunjong
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Songkhla, Thailand
- Gut Biology and Microbiota Research Unit, Prince of Songkla University, Songkhla, Thailand
| | - Nawiya Huipao
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Songkhla, Thailand
- Gut Biology and Microbiota Research Unit, Prince of Songkla University, Songkhla, Thailand
| | - Pissared Khuituan
- Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Songkhla, Thailand
- Gut Biology and Microbiota Research Unit, Prince of Songkla University, Songkhla, Thailand
- Corresponding author at: Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, 15 Karnjanavanich Rd., Hat Yai, Songkhla 90110, Thailand.
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Sturov NV, Popov SV, Belikov II. Gut Microbiota and the Ways to Correct it in Chronic Kidney Disease. Indian J Nephrol 2023; 33:162-169. [PMID: 37448901 PMCID: PMC10337223 DOI: 10.4103/ijn.ijn_469_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 01/27/2022] [Accepted: 02/06/2022] [Indexed: 07/15/2023] Open
Abstract
Approximately 13% of the Russian population suffers from chronic kidney disease (CKD). Such a high prevalence of the disease, as well as the complexity and high cost of renal replacement therapy, explain the need for developing and implementing new approaches to treat patients at the pre-dialysis stages. The data collected in recent decades highlight the importance of gut microbiota in the progression of CKD. This review provides information about the microbiota composition in healthy individuals and patients with CKD and discusses the mechanisms of interaction in the intestine-kidney system. The article also presents the specifics of the violation of gut microbiota (GM) and correction thereof in CKD.
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Affiliation(s)
- Nikolay V. Sturov
- Peoples’ Friendship University of Russia (RUDN University), Department of General Practice, 6 Miklukho-Maklaya Street, Moscow, 117198, Russian Federation
| | - Sergey V. Popov
- Peoples’ Friendship University of Russia (RUDN University), Department of General Practice, 6 Miklukho-Maklaya Street, Moscow, 117198, Russian Federation
| | - Igor I. Belikov
- Peoples’ Friendship University of Russia (RUDN University), Department of General Practice, 6 Miklukho-Maklaya Street, Moscow, 117198, Russian Federation
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Cooper TE, Scholes-Robertson N, Craig JC, Hawley CM, Howell M, Johnson DW, Teixeira-Pinto A, Jaure A, Wong G. Synbiotics, prebiotics and probiotics for solid organ transplant recipients. Cochrane Database Syst Rev 2022; 9:CD014804. [PMID: 36126902 PMCID: PMC9489278 DOI: 10.1002/14651858.cd014804.pub2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
BACKGROUND Solid organ transplantation has seen improvements in both surgical techniques and immunosuppression, achieving prolonged survival. Essential to graft acceptance and post-transplant recovery, immunosuppressive medications are often accompanied by a high prevalence of gastrointestinal (GI) symptoms and side effects. Apart from GI side effects, long-term exposure to immunosuppressive medications has seen an increase in drug-related morbidities such as diabetes mellitus, hyperlipidaemia, hypertension, and malignancy. Non-adherence to immunosuppression can lead to an increased risk of graft failure. Recent research has indicated that any microbial imbalances (otherwise known as gut dysbiosis or leaky gut) may be associated with cardiometabolic diseases in the long term. Current evidence suggests a link between the gut microbiome and the production of putative uraemic toxins, increased gut permeability, and transmural movement of bacteria and endotoxins and inflammation. Early observational and intervention studies have been investigating food-intake patterns, various synbiotic interventions (antibiotics, prebiotics, or probiotics), and faecal transplants to measure their effects on microbiota in treating cardiometabolic diseases. It is believed high doses of synbiotics, prebiotics and probiotics are able to modify and improve dysbiosis of gut micro-organisms by altering the population of the micro-organisms. With the right balance in the gut flora, a primary benefit is believed to be the suppression of pathogens through immunostimulation and gut barrier enhancement (less permeability of the gut). OBJECTIVES To assess the benefits and harms of synbiotics, prebiotics, and probiotics for recipients of solid organ transplantation. SEARCH METHODS We searched the Cochrane Kidney and Transplant Specialised Register up to 9 March 2022 through contact with the Information Specialist using search terms relevant to this review. Studies in the Register are identified through searches of CENTRAL, MEDLINE, and EMBASE, conference proceedings, the International Clinical Trials Register (ICTRP) Search Portal and ClinicalTrials.gov. SELECTION CRITERIA We included randomised controlled trials measuring and reporting the effects of synbiotics, prebiotics, or probiotics, in any combination and any formulation given to solid organ transplant recipients (any age and setting). Two authors independently assessed the retrieved titles and abstracts and, where necessary, the full text to determine which satisfied the inclusion criteria. DATA COLLECTION AND ANALYSIS Data extraction was independently carried out by two authors using a standard data extraction form. The methodological quality of included studies was assessed using the Cochrane risk of bias tool. Data entry was carried out by one author and cross-checked by another. Confidence in the evidence was assessed using the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach. MAIN RESULTS Five studies (250 participants) were included in this review. Study participants were adults with a kidney (one study) or liver (four studies) transplant. One study compared a synbiotic to placebo, two studies compared a probiotic to placebo, and two studies compared a synbiotic to a prebiotic. Overall, the quality of the evidence is poor. Most studies were judged to have unclear (or high) risk of bias across most domains. Of the available evidence, meta-analyses undertaken were of limited data from small studies. Across all comparisons, GRADE evaluations for all outcomes were judged to be very low certainty evidence. Very low certainty evidence implies that we are very uncertain about results (not estimable due to lack of data or poor quality). Synbiotics had uncertain effects on the change in microbiota composition (total plasma p-cresol), faecal characteristics, adverse events, kidney function or albumin concentration (1 study, 34 participants) compared to placebo. Probiotics had uncertain effects on GI side effects, infection rates immediately post-transplant, liver function, blood pressure, change in fatty liver, and lipids (1 study, 30 participants) compared to placebo. Synbiotics had uncertain effects on graft health (acute liver rejection) (2 studies, 129 participants: RR 0.73, 95% CI 0.43 to 1.25; 2 studies, 129 participants; I² = 0%), the use of immunosuppression, infection (2 studies, 129 participants: RR 0.18, 95% CI 0.03 to 1.17; I² = 66%), GI function (time to first bowel movement), adverse events (2 studies, 129 participants: RR 0.79, 95% CI 0.40 to 1.59; I² = 20%), serious adverse events (2 studies, 129 participants: RR 1.49, 95% CI 0.42 to 5.36; I² = 81%), death (2 studies, 129 participants), and organ function measures (2 studies; 129 participants) compared to prebiotics. AUTHORS' CONCLUSIONS This review highlights the severe lack of high-quality RCTs testing the efficacy of synbiotics, prebiotics or probiotics in solid organ transplant recipients. We have identified significant gaps in the evidence. Despite GI symptoms and postoperative infection being the most common reasons for high antibiotic use in this patient population, along with increased morbidity and the growing antimicrobial resistance, we found very few studies that adequately tested these as alternative treatments. There is currently no evidence to support or refute the use of synbiotics, prebiotics, or probiotics in solid organ transplant recipients, and findings should be viewed with caution. We have identified an area of significant uncertainty about the efficacy of synbiotics, prebiotics, or probiotics in solid organ transplant recipients. Future research in this field requires adequately powered RCTs comparing synbiotics, prebiotics, and probiotics separately and with placebo measuring a standard set of core transplant outcomes. Six studies are currently ongoing (822 proposed participants); therefore, it is possible that findings may change with their inclusion in future updates.
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Affiliation(s)
- Tess E Cooper
- Cochrane Kidney and Transplant, Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
- Sydney School of Public Health, The University of Sydney, Sydney, Australia
| | - Nicole Scholes-Robertson
- Cochrane Kidney and Transplant, Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
- Sydney School of Public Health, The University of Sydney, Sydney, Australia
- Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
| | - Jonathan C Craig
- Cochrane Kidney and Transplant, Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
- College of Medicine and Public Health, Flinders University, Adelaide, Australia
| | - Carmel M Hawley
- Department of Nephrology, Princess Alexandra Hospital, Brisbane, Australia
- Translational Research Institute, Brisbane , Australia
- Australasian Kidney Trials Network, The University of Queensland, Brisbane, Australia
| | - Martin Howell
- Sydney School of Public Health, The University of Sydney, Sydney, Australia
- Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
| | - David W Johnson
- Department of Nephrology, Princess Alexandra Hospital, Brisbane, Australia
- Australasian Kidney Trials Network, The University of Queensland, Brisbane, Australia
| | - Armando Teixeira-Pinto
- Sydney School of Public Health, The University of Sydney, Sydney, Australia
- Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
| | - Allison Jaure
- Sydney School of Public Health, The University of Sydney, Sydney, Australia
- Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
| | - Germaine Wong
- Sydney School of Public Health, The University of Sydney, Sydney, Australia
- Centre for Kidney Research, The Children's Hospital at Westmead, Westmead, Australia
- Centre for Transplant and Renal Research, Westmead Hospital, Westmead, Australia
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11
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Wang L, Zhu JH, Jiang XD, Ma ZX, Tao JH. Preventive effects of the Rehmannia glutinosa Libosch and Cornus officinalis Sieb herb couple on chronic kidney disease rats via modulating the intestinal microbiota and enhancing the intestinal barrier. Front Pharmacol 2022; 13:942032. [PMID: 36160423 PMCID: PMC9495080 DOI: 10.3389/fphar.2022.942032] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 07/25/2022] [Indexed: 11/17/2022] Open
Abstract
CKD is a clinical syndrome with slow development and gradual deterioration of renal function. At present, modern medicine still lacks an ideal treatment method for this disease, while TCM has accumulated rich clinical experience in the treatment of CKD, which can effectively improve renal function and delay renal failure, and has unique advantages. RC is widely used in clinical practice to treat CKD, especially the “Kidney-Yin” deficiency syndrome. However, the compatibility mechanisms responsible for its effects in experimental studies, including preclinical and clinical research studies, are still not fully understood. Adenine-induced CKD rats were used to investigate the preventive effect of RC on CKD rats. Based on the high-throughput 16S rRNA gene sequencing results from Illumina, we discussed the intestinal flora abundance in rats in different treatment groups. According to a PCA and a PCoA based on a distance matrix, there was a clear separation of gut microbiome profiles between normal rats and model rats in terms of beta diversity. The abundance of Firmicutes in CKD rats was relatively increased, while that of Bacteroidetes was decreased. It is clear that the plot for the RC group was closer to that of the normal group, suggesting that the RC group had higher similarities among bacterial members with N rats. Ussing chamber, Western blot, and PCR assays were used to investigate the effects of RC on intestinal barrier function and its molecular mechanism in model animals. The results indicated that the protein expressions of ZO-1, claudin-1, and occludin-1 were decreased significantly in chronic kidney disease rats with the induction of adenine. With the treatment of RG, CO, and RC, the intestinal barrier was repaired due to the upregulated expressions of the aforementioned proteins in CKD rats. Based on our findings, RC appears to strengthen the intestinal barrier and modulate gut microbiota in adenine-induced CKD rats. This project revealed the compatibility mechanism of RC in regulating the intestinal microecology and barrier function to intervene in CKD and provided the basis and ideas for the clinical application of RC and the development of innovative drugs for CKD.
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Affiliation(s)
- Ling Wang
- School of Public Health, Nantong University, Nantong, China
- School of Pharmacy, Nantong University, Nantong, China
| | - Jin-Hui Zhu
- School of Public Health, Nantong University, Nantong, China
- School of Pharmacy, Nantong University, Nantong, China
| | - Xiao-Dan Jiang
- School of Public Health, Nantong University, Nantong, China
- Department of Occupational Medicine and Environmental Toxicology, Nantong Key Laboratory of Environmental Toxicology, Nantong University, Nantong, China
| | - Zhen-Xiang Ma
- School of Public Health, Nantong University, Nantong, China
- Department of Occupational Medicine and Environmental Toxicology, Nantong Key Laboratory of Environmental Toxicology, Nantong University, Nantong, China
| | - Jin-Hua Tao
- School of Public Health, Nantong University, Nantong, China
- School of Pharmacy, Nantong University, Nantong, China
- Department of Occupational Medicine and Environmental Toxicology, Nantong Key Laboratory of Environmental Toxicology, Nantong University, Nantong, China
- *Correspondence: Jin-Hua Tao,
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12
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Chen Q, Wang Z, Shao D, Shi S. Effects of heat stress on the intestinal microorganisms in poultry and its nutritional regulations: a review. WORLD POULTRY SCI J 2022. [DOI: 10.1080/00439339.2022.2106344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Qingyi Chen
- Poultry Institute, Chinese Academy of Agricultural Science, Yangzhou, China
- Huanan Agricultural University, Guangzhou, China
| | - Zhenxin Wang
- Poultry Institute, Chinese Academy of Agricultural Science, Yangzhou, China
| | - Dan Shao
- Poultry Institute, Chinese Academy of Agricultural Science, Yangzhou, China
| | - Shourong Shi
- Poultry Institute, Chinese Academy of Agricultural Science, Yangzhou, China
- Center of Effective Evaluation of Feed and Feed Additive (Poultry Institute) Ministry of Agriculture, Yangzhou, China
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13
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Hou K, Wu ZX, Chen XY, Wang JQ, Zhang D, Xiao C, Zhu D, Koya JB, Wei L, Li J, Chen ZS. Microbiota in health and diseases. Signal Transduct Target Ther 2022; 7:135. [PMID: 35461318 PMCID: PMC9034083 DOI: 10.1038/s41392-022-00974-4] [Citation(s) in RCA: 544] [Impact Index Per Article: 272.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 03/11/2022] [Accepted: 03/15/2022] [Indexed: 02/07/2023] Open
Abstract
The role of microbiota in health and diseases is being highlighted by numerous studies since its discovery. Depending on the localized regions, microbiota can be classified into gut, oral, respiratory, and skin microbiota. The microbial communities are in symbiosis with the host, contributing to homeostasis and regulating immune function. However, microbiota dysbiosis can lead to dysregulation of bodily functions and diseases including cardiovascular diseases (CVDs), cancers, respiratory diseases, etc. In this review, we discuss the current knowledge of how microbiota links to host health or pathogenesis. We first summarize the research of microbiota in healthy conditions, including the gut-brain axis, colonization resistance and immune modulation. Then, we highlight the pathogenesis of microbiota dysbiosis in disease development and progression, primarily associated with dysregulation of community composition, modulation of host immune response, and induction of chronic inflammation. Finally, we introduce the clinical approaches that utilize microbiota for disease treatment, such as microbiota modulation and fecal microbial transplantation.
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Affiliation(s)
- Kaijian Hou
- Department of Endocrine and Metabolic Diseases, Longhu Hospital, The First Affiliated Hospital of Medical College of Shantou University, Shantou, Guangdong, 515000, China
| | - Zhuo-Xun Wu
- Department of Pharmaceutical Sciences, Institute for Biotechnology, College of Pharmacy and Health Sciences, St. John's University, Queens, NY, 11439, USA
| | - Xuan-Yu Chen
- Department of Pharmaceutical Sciences, Institute for Biotechnology, College of Pharmacy and Health Sciences, St. John's University, Queens, NY, 11439, USA
| | - Jing-Quan Wang
- Department of Pharmaceutical Sciences, Institute for Biotechnology, College of Pharmacy and Health Sciences, St. John's University, Queens, NY, 11439, USA
| | - Dongya Zhang
- Microbiome Research Center, Moon (Guangzhou) Biotech Ltd, Guangzhou, 510535, China
| | - Chuanxing Xiao
- Department of Endocrine and Metabolic Diseases, Longhu Hospital, The First Affiliated Hospital of Medical College of Shantou University, Shantou, Guangdong, 515000, China
| | - Dan Zhu
- Department of Endocrine and Metabolic Diseases, Longhu Hospital, The First Affiliated Hospital of Medical College of Shantou University, Shantou, Guangdong, 515000, China
| | - Jagadish B Koya
- Department of Pharmaceutical Sciences, Institute for Biotechnology, College of Pharmacy and Health Sciences, St. John's University, Queens, NY, 11439, USA
| | - Liuya Wei
- School of Pharmacy, Weifang Medical University, Weifang, Shandong, 261053, China
| | - Jilin Li
- Department of Cardiovascular, The Second Affiliated Hospital of Medical College of Shantou University, Shantou, Guangdong, 515000, China
| | - Zhe-Sheng Chen
- Department of Pharmaceutical Sciences, Institute for Biotechnology, College of Pharmacy and Health Sciences, St. John's University, Queens, NY, 11439, USA
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14
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Cooper TE, Scholes-Robertson N, Craig JC, Hawley CM, Howell M, Johnson DW, Teixeira-Pinto A, Tong A, Wong G. Synbiotics, prebiotics and probiotics for solid organ transplant recipients. Hippokratia 2021. [DOI: 10.1002/14651858.cd014804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Tess E Cooper
- Cochrane Kidney and Transplant, Centre for Kidney Research; The Children's Hospital at Westmead; Westmead Australia
- Sydney School of Public Health; The University of Sydney; Sydney Australia
| | - Nicole Scholes-Robertson
- Cochrane Kidney and Transplant, Centre for Kidney Research; The Children's Hospital at Westmead; Westmead Australia
- Sydney School of Public Health; The University of Sydney; Sydney Australia
- Centre for Kidney Research; The Children's Hospital at Westmead; Westmead Australia
| | - Jonathan C Craig
- Cochrane Kidney and Transplant, Centre for Kidney Research; The Children's Hospital at Westmead; Westmead Australia
- College of Medicine and Public Health; Flinders University; Adelaide Australia
| | - Carmel M Hawley
- Department of Nephrology; Princess Alexandra Hospital; Brisbane Australia
| | - Martin Howell
- Sydney School of Public Health; The University of Sydney; Sydney Australia
- Centre for Kidney Research; The Children's Hospital at Westmead; Westmead Australia
| | - David W Johnson
- Department of Nephrology; Princess Alexandra Hospital; Brisbane Australia
- Australasian Kidney Trials Network; The University of Queensland; Brisbane Australia
| | - Armando Teixeira-Pinto
- Sydney School of Public Health; The University of Sydney; Sydney Australia
- Centre for Kidney Research; The Children's Hospital at Westmead; Westmead Australia
| | - Allison Tong
- Sydney School of Public Health; The University of Sydney; Sydney Australia
- Centre for Kidney Research; The Children's Hospital at Westmead; Westmead Australia
| | - Germaine Wong
- Sydney School of Public Health; The University of Sydney; Sydney Australia
- Centre for Kidney Research; The Children's Hospital at Westmead; Westmead Australia
- Centre for Transplant and Renal Research; Westmead Hospital; Westmead Australia
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15
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Zheng LJ, Lin L, Zhong J, Zhang Z, Ye YB, Zhang XY, Wang YF, Zhang H, Liu Y, Lu GM, Gong D, Zhang LJ. Gut dysbiosis-influence on amygdala-based functional activity in patients with end stage renal disease: a preliminary study. Brain Imaging Behav 2021; 14:2731-2744. [PMID: 32304020 DOI: 10.1007/s11682-019-00223-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Patients with end-stage renal disease (ESRD) are notably accompanied by cognitive disorder and anxiety or depressive symptom. We aimed to explore the linkages of the amygdala-based MR parameters, cognitive and mood performance, systematic inflammation and gut microbiota in ESRD. This prospective study enrolled 28 ESRD patients (13 males and 15 females, mean age of 43.9 ± 13.8 years) and 19 age- and sex-matched healthy control (HC) (12 males and 7 females, mean age of 44.1 ± 10.0 years). All subjects underwent cognitive assessment, inflammatory factor and stool microbiota analysis, and brain MRI analysis [amygdala-based functional connectivity and voxel-based morphometry (VBM)]. ERSD was separated by different microbiota strains. All factors were compared between ESRD and HC, as well as between ESRD subgroups. Pearson correlation analysis and causal mediation analysis were conducted to further investigate the relationship among the factors derived from the gut microbiota, brain and systemic inflammation. ESRD displayed gut dysbiosis and increased systemic inflammation when compared to HC (all P < 0.05). Meanwhile, ESRD showed smaller VBM in amygdala, decreased functional connectivity in left amygdala - right inferior parietal lobe [P < 0.05, Gaussian Random Field (GRF) corrected] and worse cognitive or mood performance. Moreover, ESRD-B (Prevutella mainly), when compared to ESRD-A (Bacteroides mainly), displayed increased interleukin-6, self-rating anxiety scale and functional connectivity in left amygdala - bilateral anterior cingulate cortex / medial superior frontal cortex (P < 0.05, GRF corrected). Furthermore, the correlation network of ESRD showed that both gut dysbiosis and amygdala-based alteration were correlated with cognitive performance and systemic inflammation. Causal mediation analysis validated that the disrupted distribution of Roseburia indirectly regulated the amygdala-based functional connectivity through tumor necrosis factor-alpha. The gut dysbiosis induced by ESRD was closely related to pro-inflammatory cytokines, amygdala-based phenotype, and mood performance. The lower abundance in Roseburia indirectly modulated amygdala-based functional connectivity pattern by tumor necrosis factor-alpha, which might provide a new way in diagnosis and treatment in patients of ESRD with depressive/anxious mood.
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Affiliation(s)
- Li Juan Zheng
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing, 210002, Jiangsu, China
| | - Li Lin
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing, 210002, Jiangsu, China
| | - Jianhui Zhong
- The Center for Brain Imaging Science and Technology, Key Laboratory for Biomedical Engineering of Ministry of Education, College of Biomedical Engineering and Instrumental Science, Zhejiang University, 38 Zheda Rd, Zhejiang, 310027, Hangzhou, China.,Department of Imaging Sciences, University of Rochester, Rochester, NY, 14642, USA
| | - Zhihong Zhang
- National Clinical Research Center of Kidney Disease, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing, 210002, Jiangsu Province, China
| | - Yu Bing Ye
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing, 210002, Jiangsu, China
| | - Xin Yuan Zhang
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing, 210002, Jiangsu, China
| | - Yun Fei Wang
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing, 210002, Jiangsu, China
| | - Han Zhang
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing, 210002, Jiangsu, China
| | - Ya Liu
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing, 210002, Jiangsu, China
| | - Guang Ming Lu
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing, 210002, Jiangsu, China
| | - Dehua Gong
- National Clinical Research Center of Kidney Disease, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing, 210002, Jiangsu Province, China.
| | - Long Jiang Zhang
- Department of Medical Imaging, Jinling Hospital, Medical School of Nanjing University, 305 Zhongshan East Road, Xuanwu District, Nanjing, 210002, Jiangsu, China.
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16
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Stavropoulou E, Kantartzi K, Tsigalou C, Konstantinidis T, Romanidou G, Voidarou C, Bezirtzoglou E. Focus on the Gut-Kidney Axis in Health and Disease. Front Med (Lausanne) 2021; 7:620102. [PMID: 33553216 PMCID: PMC7859267 DOI: 10.3389/fmed.2020.620102] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 12/16/2020] [Indexed: 12/11/2022] Open
Abstract
The recent new developments in technology with culture-independent techniques including genome sequencing methodologies shed light on the identification of microbiota bacterial species and their role in health and disease. Microbiome is actually reported as an important predictive tool for evaluating characteristic shifts in case of disease. Our present review states the development of different renal diseases and pathologies linked to the intestinal dysbiosis, which impacts on host homeostasis. The gastrointestinal–kidney dialogue provides intriguing features in the pathogenesis of several renal diseases. Without any doubt, investigation of this interconnection consists one of the most cutting-edge areas of research with potential implications on our health.
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Affiliation(s)
- Elisavet Stavropoulou
- Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland.,Department of Infectious Diseases, Central Institute, Valais Hospital, Sion, Switzerland
| | - Konstantia Kantartzi
- Department of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | - Christina Tsigalou
- Department of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
| | | | | | | | - Eugenia Bezirtzoglou
- Department of Medicine, Democritus University of Thrace, Alexandroupolis, Greece
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17
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Zhu B, Shen J, Jiang R, Jin L, Zhan G, Liu J, Sha Q, Xu R, Miao L, Yang C. Abnormalities in gut microbiota and serum metabolites in hemodialysis patients with mild cognitive decline: a single-center observational study. Psychopharmacology (Berl) 2020; 237:2739-2752. [PMID: 32601991 DOI: 10.1007/s00213-020-05569-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 05/20/2020] [Indexed: 02/08/2023]
Abstract
RATIONALE Although a growing body of evidence indicates that the scores of cognitive function in hemodialysis patients are significantly lower than those of healthy individuals, underlying mechanisms have not been fully elucidated. OBJECTIVES To investigate the roles of gut microbiota and serum metabolites in hemodialysis patients with mild cognitive decline (MCD). METHODS A total of 30 healthy individuals and 77 hemodialysis patients were enrolled and were classified into healthy control (HC), normal cognitive function (NCF), and MCD groups by evaluation of Montreal Cognitive Assessment. Fecal samples were analyzed by 16S rRNA and serum samples were analyzed by gas chromatography-mass spectrometry from all subjects. RESULTS The 16S rRNA study demonstrated that the gut microbiota profiles, including α- and β-diversity, and a number of 16 gut bacteria were significantly altered in the MCD group compared with those in HC or those with NCF. A metabonomics study showed that a total of 29 serum metabolites were altered in the MCD group. Receiver operating characteristic curves showed that Genus Bilophila and serum putrescine might be sensitive biomarkers to indicate MCD in patients with hemodialysis. CONCLUSIONS These findings demonstrate gut microbiota and serum metabolites were probably involved in the pathogenesis of hemodialysis-related MCD. Therapeutic strategies targeting abnormalities in gut microbiota and serum metabolites may facilitate the beneficial effects for hemodialysis patients with MCD.
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Affiliation(s)
- Bin Zhu
- Department of Critical Care Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, 213003, China
| | - Jianqin Shen
- The Blood Purification Center, The Third Affiliated Hospital of Soochow University, Changzhou, 213003, China
| | - Riyue Jiang
- Department of Ultrasound Imaging, Renmin Hospital, Wuhan University, Wuhan, 430060, China
| | - Lina Jin
- The Blood Purification Center, The Third Affiliated Hospital of Soochow University, Changzhou, 213003, China
| | - Gaofeng Zhan
- Department of Anesthesiology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Jinfeng Liu
- The Blood Purification Center, The Third Affiliated Hospital of Soochow University, Changzhou, 213003, China
| | - Qi Sha
- Department of Clinical Nutrition, The Third Affiliated Hospital of Soochow University, Changzhou, 213003, China
| | - Rongpeng Xu
- Department of Critical Care Medicine, The Third Affiliated Hospital of Soochow University, Changzhou, 213003, China
| | - Liying Miao
- Department of Nephrology, The Third Affiliated Hospital of Soochow University, Changzhou, 213003, China.
| | - Chun Yang
- Department of Anesthesiology and Perioperative Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China.
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18
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Cooper TE, Khalid R, Craig JC, Hawley CM, Howell M, Johnson DW, Teixeira-Pinto A, Tong A, Wong G. Synbiotics, prebiotics and probiotics for people with chronic kidney disease. Hippokratia 2020. [DOI: 10.1002/14651858.cd013631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Tess E Cooper
- Cochrane Kidney and Transplant, Centre for Kidney Research; The Children's Hospital at Westmead; Westmead Australia
- Sydney School of Public Health; The University of Sydney; Sydney Australia
| | - Rabia Khalid
- Sydney School of Public Health; The University of Sydney; Sydney Australia
- Centre for Kidney Research; The Children's Hospital at Westmead; Westmead Australia
| | - Jonathan C Craig
- Cochrane Kidney and Transplant, Centre for Kidney Research; The Children's Hospital at Westmead; Westmead Australia
- College of Medicine and Public Health; Flinders University; Adelaide Australia
| | - Carmel M Hawley
- Department of Nephrology; Princess Alexandra Hospital; Brisbane Australia
| | - Martin Howell
- Sydney School of Public Health; The University of Sydney; Sydney Australia
- Centre for Kidney Research; The Children's Hospital at Westmead; Westmead Australia
| | - David W Johnson
- Department of Nephrology; Princess Alexandra Hospital; Brisbane Australia
| | - Armando Teixeira-Pinto
- Sydney School of Public Health; The University of Sydney; Sydney Australia
- Centre for Kidney Research; The Children's Hospital at Westmead; Westmead Australia
| | - Allison Tong
- Sydney School of Public Health; The University of Sydney; Sydney Australia
- Centre for Kidney Research; The Children's Hospital at Westmead; Westmead Australia
| | - Germaine Wong
- Sydney School of Public Health; The University of Sydney; Sydney Australia
- Centre for Kidney Research; The Children's Hospital at Westmead; Westmead Australia
- Centre for Transplant and Renal Research; Westmead Hospital; Westmead Australia
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19
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Li Y, Yu T, Yan H, Li D, Yu T, Yuan T, Rahaman A, Ali S, Abbas F, Dian Z, Wu X, Baloch Z. Vaginal Microbiota and HPV Infection: Novel Mechanistic Insights and Therapeutic Strategies. Infect Drug Resist 2020; 13:1213-1220. [PMID: 32431522 PMCID: PMC7198448 DOI: 10.2147/idr.s210615] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 03/11/2020] [Indexed: 12/12/2022] Open
Abstract
Cervical cancer is a global public health concern. The complex interaction of genetic and environmental factors is critical for the progress of cervical cancer. Growing evidence suggests that microbes, human papillomavirus (HPV), and the immune system interact closely with each other to govern homeostasis of the vaginal environment and the health of the lower genital tract of females. Certain vaginal microbial strains may play either a protective or a pathogenic role in carcinogenesis of the cervix after HPV persistent infection. Probiotics can therefore present a putative therapeutic approach for cervical cancer. However, work in this field remains limited. Recent technological developments have allowed us to identify microbes and their products using culture-independent molecular detection techniques. In this review, we discuss the composition of the vaginal bacterial community, its commensal flora and the protective impact this has on the health of the female genital tract. This review will also describe critical immune factors in lower genital tract health and summarize the role of the vaginal microbiota in cervical carcinogenesis. Knowledge in this field has provided researchers with the clues and tools to propose the use of probiotics as a potential line of treatment for cervical cancer and has provided valuable insights into host–pathogen interaction dynamics within the female genital tract.
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Affiliation(s)
- Yuanyue Li
- Department of Gynaecology, The First People's Hospital of Yunnan Province, Kunming 650032, Yunnan, People's Republic of China
| | - Tao Yu
- Department of Gynaecology, The First People's Hospital of Yunnan Province, Kunming 650032, Yunnan, People's Republic of China
| | - Huang Yan
- South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Duanduan Li
- South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Tang Yu
- South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Tao Yuan
- Department of Gynaecology, The First People's Hospital of Yunnan Province, Kunming 650032, Yunnan, People's Republic of China
| | - Abdul Rahaman
- School of Food Science and Engineering, South China University of Technology, Guangzhou, People's Republic of China
| | - Shahid Ali
- School of Food Science and Engineering, South China University of Technology, Guangzhou, People's Republic of China
| | - Farhat Abbas
- South China Agricultural University, Guangzhou 510642, People's Republic of China
| | - Ziqin Dian
- Department of Clinical Laboratory, The First People's Hospital of Yunnan Province, Kunming, Yunnan 650032, People's Republic of China
| | - Xiaomei Wu
- Department of Gynaecology, The First People's Hospital of Yunnan Province, Kunming 650032, Yunnan, People's Republic of China
| | - Zulqarnain Baloch
- Biomedical Research Center, Northwest Minzu University, Lanzhou 730030, People's Republic of China
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20
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Hu X, Ouyang S, Xie Y, Gong Z, Du J. Characterizing the gut microbiota in patients with chronic kidney disease. Postgrad Med 2020; 132:495-505. [PMID: 32241215 DOI: 10.1080/00325481.2020.1744335] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Objectives: Emerging evidence suggests that gut microbiota dysbiosis plays a critical role in chronic kidney disease (CKD). However, the relationship between altered gut microbiome profiles and disease severity remains unclear. In this study, we sought to characterize the gut microbiota in CKD patients compared to healthy controls, and to explore potential relationships between gut microbiota composition and disease severity. Methods: Fecal samples were collected from 95 patients at different stages of CKD (non-dialysis patients from stage 1 to 5) and 20 healthy controls. Bacterial DNA was extracted for 16S ribosomal DNA sequencing targeting the V3-V4 region. The diversity and relative abundance of gut microbiota were analyzed as outcome indicators. Results: Differences were observed in the microbial composition and diversity of fecal samples from CKD patients and healthy controls. Specifically, disease severity was found to alter gut microbiota composition. Compared to that in healthy controls, CKD patients showed an increased abundance of Proteobacteria and decreased Synergistetes, most notably in disease stage 5. Lower levels of butyrate-producing bacteria and higher levels of potential pathogens were also detected in CKD patients. Further, Pyramidobacter and Prevotellaceae_UCG-001 were significantly decreased in the CKD1 group compared with healthy controls. Notably, nine microbial genera, including Escherichia-Shigella, Parabacteroides, Roseburia, rectale_group, Ruminococcaceae_NK4A214_group, Prevotellaceae_UCG.001, Hungatella, Intestinimonas, and Pyramidobacter, identified using a random forest model, distinguished between patients with CKD and healthy controls with high accuracy. Functional analysis also revealed that fatty acid and inositol phosphate metabolism were enriched in the CKD group, while aminoacyl-tRNA biosynthesis, oxidative phosphorylation, phenylalanine, tyrosine, and tryptophan biosynthesis, thiamine metabolism, pantothenate, and CoA biosynthesis, as well as valine, leucine, and isoleucine biosynthesis were enriched in healthy controls. Conclusion: Gut microbiota composition and function are associated with CKD severity. And, specific gut microbes are potentially helpful for CKD early diagnosis and prognosis monitoring.
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Affiliation(s)
- Xiaofang Hu
- Department of Pharmacy, Xiangya Hospital, Central South University , Changsha, Hunan, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University , Changsha, Hunan, China.,The Hunan Institute of Pharmacy Practice and Clinical Research, Xiangya Hospital , Changsha, Hunan, China
| | - Shaxi Ouyang
- Department of Nephrology, Hunan Provincial People's Hospital, the First-affiliated Hospital of Hunan Normal University , Changsha, Hunan, China
| | - Yuhong Xie
- Department of Pharmacy, Xiangya Hospital, Central South University , Changsha, Hunan, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University , Changsha, Hunan, China.,The Hunan Institute of Pharmacy Practice and Clinical Research, Xiangya Hospital , Changsha, Hunan, China
| | - Zhicheng Gong
- Department of Pharmacy, Xiangya Hospital, Central South University , Changsha, Hunan, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University , Changsha, Hunan, China.,The Hunan Institute of Pharmacy Practice and Clinical Research, Xiangya Hospital , Changsha, Hunan, China
| | - Jie Du
- Department of Pharmacy, Xiangya Hospital, Central South University , Changsha, Hunan, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University , Changsha, Hunan, China.,The Hunan Institute of Pharmacy Practice and Clinical Research, Xiangya Hospital , Changsha, Hunan, China
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21
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Yurinskaya MM, Krasnov GS, Kulikova DA, Zatsepina OG, Vinokurov MG, Chuvakova LN, Rezvykh AP, Funikov SY, Morozov AV, Evgen'ev MB. H 2S counteracts proinflammatory effects of LPS through modulation of multiple pathways in human cells. Inflamm Res 2020; 69:481-495. [PMID: 32157318 DOI: 10.1007/s00011-020-01329-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 02/12/2020] [Accepted: 02/22/2020] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Hydrogen sulfide donors reduce inflammatory signaling in vitro and in vivo. The biological effect mediated by H2S donors depends on the kinetics of the gas release from the donor molecule. However, the molecular mechanisms of H2S-induced immunomodulation were poorly addressed. Here, we studied the effect of two different hydrogen sulfide (H2S)-producing agents on the generation of the LPS-induced inflammatory mediators. Importantly, we investigated the transcriptomic changes that take place in human cells after the LPS challenge, combined with the pretreatment with a slow-releasing H2S donor-GYY4137. METHODS We investigated the effects of GYY4137 and sodium hydrosulfide on the release of proinflammatory molecules such as ROS, NO and TNF-α from LPS-treated human SH-SY5Y neuroblastoma and the THP-1 promonocytic cell lines. Transcriptomic and RT-qPCR studies using THP-1 cells were performed to monitor the effects of the GYY4137 on multiple signaling pathways, including various immune-related and proinflammatory genes after combined action of LPS and GYY4137. RESULTS The GYY4137 and sodium hydrosulfide differed in the ability to reduce the production of the LPS-evoked proinflammatory mediators. The pre-treatment with GYY4137 resulted in a drastic down-regulation of many TNF-α effectors that are induced by LPS treatment in THP-1 cells. Furthermore, GYY4137 pretreatment of LPS-exposed cells ameliorates the LPS-mediated induction of multiple pro-inflammatory genes and decreases expression of immunoproteasome genes. Besides, in these experiments we detected the up-regulation of several important pathways that are inhibited by LPS. CONCLUSION Based on the obtained results we believe that our transcriptomic analysis significantly contributes to the understanding of the molecular mechanisms of anti-inflammatory and cytoprotective activity of hydrogen sulfide donors, and highlights their potential against LPS challenges and other forms of inflammation.
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Affiliation(s)
- M M Yurinskaya
- Engelhardt Institute of Molecular Biology RAS, Vavilov str. 32, Moscow, 119991, Russia.,Institute of Cell Biophysics RAS, PSCBR RAS, Puschino, 142290, Russia
| | - G S Krasnov
- Engelhardt Institute of Molecular Biology RAS, Vavilov str. 32, Moscow, 119991, Russia
| | - D A Kulikova
- Koltzov Institute of Developmental Biology RAS, Moscow, 119991, Russia
| | - O G Zatsepina
- Engelhardt Institute of Molecular Biology RAS, Vavilov str. 32, Moscow, 119991, Russia
| | - M G Vinokurov
- Institute of Cell Biophysics RAS, PSCBR RAS, Puschino, 142290, Russia
| | - L N Chuvakova
- Engelhardt Institute of Molecular Biology RAS, Vavilov str. 32, Moscow, 119991, Russia
| | - A P Rezvykh
- Engelhardt Institute of Molecular Biology RAS, Vavilov str. 32, Moscow, 119991, Russia.,Moscow Institute of Physics and Technology, Dolgoprudny, 141701, Russia
| | - S Y Funikov
- Engelhardt Institute of Molecular Biology RAS, Vavilov str. 32, Moscow, 119991, Russia
| | - A V Morozov
- Engelhardt Institute of Molecular Biology RAS, Vavilov str. 32, Moscow, 119991, Russia
| | - M B Evgen'ev
- Engelhardt Institute of Molecular Biology RAS, Vavilov str. 32, Moscow, 119991, Russia.
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22
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Gut microbiota and chronic kidney disease: evidences and mechanisms that mediate a new communication in the gastrointestinal-renal axis. Pflugers Arch 2020; 472:303-320. [PMID: 32064574 DOI: 10.1007/s00424-020-02352-x] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 01/06/2020] [Accepted: 01/21/2020] [Indexed: 02/06/2023]
Abstract
Chronic kidney disease (CKD) represents a growing public health problem associated with loss of kidney function and cardiovascular disease (CVD), the main leading cause of morbidity and mortality in CKD. It is well established that CKD is associated with gut dysbiosis. Over the past few years, there has been a growing interest in studying the composition of the gut microbiota in patients with CKD as well as the mechanisms by which gut dysbiosis contributes to CKD progression, in order to identify possible therapeutic targets to improve the morbidity and survival in CKD. The purpose of this review is to explore the clinical evidence and the mechanisms involved in the gut-kidney crosstalk as well as the possible interventions to restore a normal balance of the gut microbiota in CKD. It is well known that the influence of the gut microbiota on the gut-kidney axis acts in a reciprocal way: on the one hand, CKD significantly modifies the composition and functions of the gut microbiota. On the other hand, gut microbiota is able to manipulate the processes leading to CKD onset and progression through inflammatory, endocrine, and neurologic pathways. Understanding the complex interaction between these two organs (gut microbiota and kidney) may provide novel nephroprotective interventions to prevent the progression of CKD by targeting the gut microbiota. The review is divided into three main sections: evidences from clinical studies about the existence of a gut microbiota dysbiosis in CKD; the complex mechanisms that explain the bidirectional relationship between CKD and gut dysbiosis; and reports regarding the effects of prebiotic, probiotic, and synbiotic supplementation to restore gut microbiota balance in CKD.
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23
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Afkari R, Feizabadi MM, Ansari-Moghadam A, Safari T, Bokaeian M. Simultaneous use of oxalate-degrading bacteria and herbal extract to reduce the urinary oxalate in a rat model: A new strategy. Int Braz J Urol 2020; 45:1249-1259. [PMID: 31808414 PMCID: PMC6909872 DOI: 10.1590/s1677-5538.ibju.2019.0167] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 05/01/2019] [Indexed: 03/14/2023] Open
Abstract
Objective: Urinary stones with oxalate composition can cause kidney failure. Recent findings evidenced that probiotics are effective in reducing oxalate absorption in these subjects based on their high colonic absorption levels at baseline. The purpose of this study was to evaluate the effect of the simultaneous use of oxalate-degrading bacteria, Urtica dioica and T. terrestris extract in reducing urinary oxalate. Materials and Methods: Anti-urolithiatic activity of Urtica dioica and T. terrestris extract and probiotic by using ethylene glycol induced rat model. In this study, 4 strains of Lactobacillus and 2 strains of Bifidobacterium and also 2 strains of L. paracasei (that showed high power in oxalate degrading in culture media) were used. Male Wistar rats were divided into four groups (n=6). The rats of group-I received normal diet (positive control group) and groups-II (negative control group), III, IV rats received diet containing ethylene glycol (3%) for 30 days. Groups III rats received Urtica dioica and T. terrestris extract. Groups IV rats received extracts + probiotic for 30 days. Findings: The results show that the use of herbal extracts (Urtica dioica and T. terrestris) reduced the level of urinary oxalate and other parameters of urine and serum. Also, the accumulation of calcium oxalate crystals in the kidney tissue was significantly reduced. Conclusion: Considering that the formation of calcium oxalate crystals can cause inflammation and tissue damage in the kidney, the use of herbal extracts with oxalate degrading bacteria can be a new therapeutic approach to preventing the formation of kidney stones.
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Affiliation(s)
- Rouhi Afkari
- Infectious Diseases and Tropical Medicine Research Center, Resistant Tuberculosis Institute, Zahedan University of Medical Sciences, Zahedan, Iran
| | | | - Alireza Ansari-Moghadam
- School of Health, Health Promotion Research Center, Zahedan University of Medical Sciences, Zahedan, Iran
| | | | - Mohammad Bokaeian
- Infectious Diseases and Tropical Medicine Research Center, Resistant Tuberculosis Institute, Zahedan University of Medical Sciences, Zahedan, Iran
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24
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Wang YF, Zheng LJ, Liu Y, Ye YB, Luo S, Lu GM, Gong D, Zhang LJ. The gut microbiota-inflammation-brain axis in end-stage renal disease: perspectives from default mode network. Am J Cancer Res 2019; 9:8171-8181. [PMID: 31754388 PMCID: PMC6857049 DOI: 10.7150/thno.35387] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 09/11/2019] [Indexed: 12/19/2022] Open
Abstract
The gut-brain axis in end-stage renal disease (ESRD) is attracting more and more attention. However, the mechanism of gut-brain axis based cognitive disorders in ESRD patients remains unclear. The purpose of this study was to investigate the linkages between the gut microbiota, inflammatory cytokines, brain default mode network (DMN) and cognitive function in ESRD patients. Methods: This prospective study enrolled 28 ESRD patients (13 males and 15 females, mean age of 44 ± 14 years) and 19 healthy controls (HCs) (12 males and 7 females, mean age of 44 ± 10 years). All subjects underwent stool microbiota analysis, blood inflammatory cytokines examination, brain MRI scans and cognitive assessments. Resting state functional MRI (rs-fMRI) data were used to construct DMN and graph theory was applied to characterize network topological properties. Two samples t-test was applied for the comparisons between ESRD and HCs. Correlation analysis and mediation analysis were conducted among factors with significant group differences. Results: ESRD patients displayed gut microbiota alterations, increased systemic inflammation and worse cognitive performance compared to HCs (all p < 0.05). Graph analysis revealed disrupted DMN topological organization, aberrant nodal centralities and functional connectivities (FCs) in ESRD patients relative to HCs (all p < 0.05, FDR corrected). Significant correlations were found between gut microbiota, inflammatory cytokines, DMN network measures and cognitive assessments. Mediation analysis found that gut microbiota alteration impaired DMN connectivity by increasing systemic inflammation. Conclusion: The present study first revealed gut microbiota alterations, systemic inflammation, DMN dissociation and cognitive dysfunction in ESRD patients simultaneously and further illuminated their inner relationship.
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25
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Juno JA, Eriksson EM. γδ T-cell responses during HIV infection and antiretroviral therapy. Clin Transl Immunology 2019; 8:e01069. [PMID: 31321033 PMCID: PMC6636517 DOI: 10.1002/cti2.1069] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2019] [Revised: 06/27/2019] [Accepted: 06/28/2019] [Indexed: 12/16/2022] Open
Abstract
HIV infection is associated with a rapid and sustained inversion of the Vδ1:Vδ2 T‐cell ratio in peripheral blood. Studies of antiretroviral therapy (ART)‐treated cohorts suggest that ART is insufficient to reconstitute either the frequency or function of the γδ T‐cell subset. Recent advances are now beginning to shed light on the relationship between microbial translocation, chronic inflammation, immune ageing and γδ T‐cell immunology. Here, we review the impact of acute, chronic untreated and treated HIV infection on circulating and mucosal γδ T‐cell subsets and highlight novel approaches to harness γδ T cells as components of anti‐HIV immunotherapy.
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Affiliation(s)
- Jennifer A Juno
- Department of Microbiology and Immunology The University of Melbourne at The Peter Doherty Institute for Infection and Immunity Melbourne VIC Australia
| | - Emily M Eriksson
- Division of Population Health and Immunity Walter and Eliza Hall Institute of Medical Science Melbourne VIC Australia.,Department of Medical Biology The University of Melbourne Melbourne VIC Australia
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26
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Virzì GM, Breglia A, Ankawi G, Bolin C, de Cal M, Cianci V, Vescovo G, Ronco C. Plasma Lipopolysaccharide Concentrations in Cardiorenal Syndrome Type 1. Cardiorenal Med 2019; 9:308-315. [PMID: 31238313 DOI: 10.1159/000500480] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 04/18/2019] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Cardiorenal syndrome (CRS) type 1 is characterized by a rapid worsening of cardiac function that leads to acute kidney injury (AKI). This study evaluated the role of lipopolysaccharide (LPS) in the development of AKI in patients with acute heart failure (AHF) and its relationship with renal parameters, to enable a better comprehension of the pathophysiology of CRS type 1. METHODS We enrolled 32 AHF patients, 15 of whom were classified as having CRS type 1. Eight of these 15 exhibited AKI at the time of admission (caused by AHF) and the other 7 developed AKI during their stay in hospital (in the first 48 h). We evaluated the plasmatic LPS concentrations as well as conventional (serum creatinine [sCr] and urea) and unconventional (neutrophil gelatinase-associated lipocalin [NGAL] and cystatin C) renal markers. RESULTS LPS levels were significantly higher in the CRS type 1 patients. No significant difference in LPS level was found in patients who were admitted with AKI and those developed AKI in hospital, but there was a tendency towards a higher level of LPS in CRS type 1 patients admitted with AKI. The LPS concentrations at admission were similar in CRS type 1 survivors (n = 12) and nonsurvivors (n = 3) (p = 0.22). We observed a positive correlation between LPS level and NGAL, Scr at admission and peak Scr during hospitalization and urea at admission. CONCLUSION CRS type 1 patients present with an increased level of LPS and there is a direct correlation between LPS and renal parameters. This pilot research is the first study to explore the premise of LPS as novel pathophysiological factor in CRS type 1.
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Affiliation(s)
- Grazia Maria Virzì
- IRRIV-International Renal Research Institute Vicenza, Vicenza, Italy, .,Department of Nephrology, Dialysis and Transplant, San Bortolo Hospital, Vicenza, Italy,
| | - Andrea Breglia
- IRRIV-International Renal Research Institute Vicenza, Vicenza, Italy.,Emergency Department of Arzignano Hospital, Arzignano, Italy
| | - Ghada Ankawi
- IRRIV-International Renal Research Institute Vicenza, Vicenza, Italy.,Department of Internal Medicine and Nephrology, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Chiara Bolin
- Internal Medicine, San Bortolo Hospital, Vicenza, Italy
| | - Massimo de Cal
- IRRIV-International Renal Research Institute Vicenza, Vicenza, Italy.,Department of Nephrology, Dialysis and Transplant, San Bortolo Hospital, Vicenza, Italy
| | - Vito Cianci
- Emergency Department of Arzignano Hospital, Arzignano, Italy
| | - Giorgio Vescovo
- Internal Medicine, San Bortolo Hospital, Vicenza, Italy.,Internal Medicine Unit, Sant'Antonio Hospital Padua, Padua, Italy
| | - Claudio Ronco
- IRRIV-International Renal Research Institute Vicenza, Vicenza, Italy.,Department of Nephrology, Dialysis and Transplant, San Bortolo Hospital, Vicenza, Italy.,Nephrology, Department of Medicine, University of Padua, Padua, Italy
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27
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El-Deeb OS, Atef MM, Hafez YM. The interplay between microbiota-dependent metabolite trimethylamine N-oxide, Transforming growth factor β/SMAD signaling and inflammasome activation in chronic kidney disease patients: A new mechanistic perspective. J Cell Biochem 2019; 120:14476-14485. [PMID: 31002427 DOI: 10.1002/jcb.28707] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 01/15/2019] [Accepted: 01/24/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND Chronic kidney disease (CKD) signifies a frequently life-threatening condition influencing kidney structure and function. Despite its irrefutable importance, its exact pathogenesis is not completely clarified. However, CKD is known to be associated with accumulated uremic toxins/metabolites, interstitial fibrosis, and systemic inflammation. So we aimed to investigate the role of microbiota-dependent metabolite trimethylamine N-oxide (TMAO), transforming growth factor β (TGFβ)/SMAD signaling, and inflammasome activation in CKD pathogenesis through its different stages. SUBJECTS AND METHODS Eighty patients with CKD of stages 2 to 4 in addition 15 healthy control subjects were enrolled. SMAD3 and nucleotide-binding oligomerization domain-, leucine-rich repeat- and pyrin domain-containing 3 (NLRP3) messenger RNA (mRNA) expressions from whole blood were assessed by quantitative real-time polymerase chain reaction (RT-PCR). Serum TGF-β1 and interleukin-1β (IL-1β) levels were estimated by the enzyme-linked immunosorbent assay. Plasma and urinary TMAO levels were measured. Oxidative stress markers were also assessed. RESULTS SMAD3 and NLRP3 mRNA expressions were significantly upregulated in patients with CKD. Likewise, serum TGF-β1 and IL-1β levels were significantly elevated in patients with CKD, with increase in plasma and urinary TMAO levels and altered redox status throughout different CKD stages. CONCLUSION The study documented that TMAO could be used as a reliable biomarker to evaluate CKD progression; being linked to TGF-β/SMAD signaling, NLRP3 inflammasome activation as well as being a noninvasive applicable technique.
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Affiliation(s)
- Omnia Safwat El-Deeb
- Medical Biochemistry Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Marwa Mohamed Atef
- Medical Biochemistry Department, Faculty of Medicine, Tanta University, Tanta, Egypt
| | - Yasser Mostafa Hafez
- Internal Medicine Department, Faculty of Medicine, Tanta University, Tanta, Egypt
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28
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Li Y, Sun H, Du B, Xu H. Gut Microbiota Shifts in Pup Athymic BALB/c Mice: An Updated Identification in Nude Mice. Animals (Basel) 2019; 9:ani9040151. [PMID: 30965569 PMCID: PMC6523615 DOI: 10.3390/ani9040151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Revised: 04/01/2019] [Accepted: 04/01/2019] [Indexed: 11/17/2022] Open
Abstract
Simple Summary Mammal gut microbiota has been gradually considered to be related to innate and adaptive immunity. Incredibly, although athymic nude mouse is one of the most popular animals for modeling immunodeficiency and tumors, a basic understanding of its gut microbiota has still not been attained, and current relevant conclusions are controversial. In this 30-day study, based on high-throughput sequencing technology, we compared the differences in gut microbial community structures and functions between normal and nude pup mice, and concluded that gut microbiota shifts did occur in nude mice. These findings provide updated insight for the nude mouse tumor model. Abstract It is commonly recognized that immunodeficiency modifies the gut microbiota in mammals. However, little information on the gut microbiota is available for athymic nude mice; one of the most popular animals for modeling immunodeficiency and tumors. In this study, 16S rDNA amplicon sequencing was performed to investigate the gut microbial composition of pup nude BALB/c mice during a 30-day experimental period. In contrast to pup normal mice, pup nude mice showed a significant variation in gut microbiota. Continuously decreased dynamics of the gut bacterial Shannon index, abnormal Firmicutes/Bacteroidetes ratio, the rarity of Bifidobacterium and Lactobacillus species, and a developmental lag of gut bacterial functions were observed in nude mice. The shift in gut microbiota and abnormal colonization of beneficial bacterial species in nude mice provide an updated insight into the nude mouse tumor model and a new perspective for establishing an animal model for study on dysbacteriosis.
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Affiliation(s)
- Yuting Li
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Hao Sun
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
| | - Beibei Du
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Hui Xu
- Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
- Key Laboratory of Pollution Ecology and Environmental Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China.
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Chang CH, Kor CT, Wu CL, Chiu PF, Li JR, Tsai CC, Chang TH, Chang CC. Increased chronic kidney disease development and progression in diabetic patients after appendectomy: a population-based cohort study. PeerJ 2018; 6:e5019. [PMID: 29915707 PMCID: PMC6004103 DOI: 10.7717/peerj.5019] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 05/30/2018] [Indexed: 12/13/2022] Open
Abstract
Background The vermiform appendix serves as a "safe house" for maintaining normal gut bacteria and appendectomy may impair the intestinal microbiota. Appendectomy is expected to profoundly alter the immune system and modulate the pathogenic inflammatory immune responses of the gut. Recent studies have shown that a dysbiotic gut increases the risk of cardiovascular disease and chronic kidney disease (CKD). Therefore, we hypothesized that appendectomy would increase the risk of CKD. Methods This nationwide, population-based, propensity-score-matched cohort study included 10,383 patients who underwent appendectomy and 41,532 propensity-score-matched controls. Data were collected by the National Health Insurance Research Database of Taiwan from 2000 to 2013. We examined the associations between appendectomy and CKD and end-stage renal disease (ESRD). The major outcome was a new diagnosis of CKD based on an outpatient diagnosis made at least three times or hospital discharge diagnosis made once during the follow-up period. ESRD was defined as undergoing dialysis therapy for at least 90 days, as in previous studies. Results The incidence rates of CKD and ESRD were higher in the appendectomy group than in the control cohort (CKD: 6.52 vs. 5.93 per 1,000 person-years, respectively; ESRD: 0.49 vs. 0.31 per 1,000 person-years, respectively). Appendectomy patients also had a higher risk of developing CKD (adjusted hazard ratio [aHR] 1.13; 95% CI [1.01-1.26]; P = 0.037) and ESRD (aHR 1.59; 95% CI [1.06-2.37]; P = 0.024) than control group patients. Subgroup analysis showed that appendectomy patients with concomitant diabetes mellitus (aHR 2.08; P = 0.004) were at higher risk of incident ESRD than those without diabetes mellitus. The interaction effects of appendectomy and diabetes mellitus were significant for ESRD risk (P = 0.022); no interaction effect was found for CKD risk (P = 0.555). Conclusions Appendectomy increases the risk of developing CKD and ESRD, especially in diabetic patients. Physicians should pay close attention to renal function prognosis in appendectomy patients.
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Affiliation(s)
- Chin-Hua Chang
- Department of Internal Medicine, Changhua Christian hospital, Changhua, Taiwan
| | - Chew-Teng Kor
- Department of Internal Medicine Research Center, Changhua Christian hospital, Changhua, Taiwan.,Graduate Institute of Statistics and Information Science, National Changhua University of Education, Changhua, Taiwan
| | - Chia-Lin Wu
- Department of Internal Medicine, Changhua Christian hospital, Changhua, Taiwan.,Department of Environmental and Precision Medicine Laboratory, Changhua Christian Hospital, Changhua, Lithuania.,Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Ping-Fang Chiu
- Department of Internal Medicine, Changhua Christian hospital, Changhua, Taiwan.,School of Medicine, Chung-Shan Medical University, Taichung, Taiwan
| | - Jhao-Rong Li
- Department of Internal Medicine, Changhua Christian hospital, Changhua, Taiwan
| | - Chun-Chieh Tsai
- Department of Internal Medicine, Changhua Christian hospital, Changhua, Taiwan
| | - Teng-Hsiang Chang
- Department of Internal Medicine, Changhua Christian hospital, Changhua, Taiwan
| | - Chia-Chu Chang
- Department of Internal Medicine, Changhua Christian hospital, Changhua, Taiwan.,Department of Environmental and Precision Medicine Laboratory, Changhua Christian Hospital, Changhua, Lithuania.,School of Medicine, Chung-Shan Medical University, Taichung, Taiwan.,Department of Internal Medicine, Kuang Tien General Hospital, Taichung, Taiwan.,Department of Nutrition, Hungkuang University, Taichung, Taiwan
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The importance of Oxalobacter formigenes and oxalic acid in the pathogenesis of chronic kidney disease. Int Urol Nephrol 2018; 50:1189. [PMID: 29556902 DOI: 10.1007/s11255-018-1848-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Accepted: 03/12/2018] [Indexed: 10/17/2022]
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Piqué N, Gómez-Guillén MDC, Montero MP. Xyloglucan, a Plant Polymer with Barrier Protective Properties over the Mucous Membranes: An Overview. Int J Mol Sci 2018; 19:E673. [PMID: 29495535 PMCID: PMC5877534 DOI: 10.3390/ijms19030673] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 02/23/2018] [Accepted: 02/24/2018] [Indexed: 02/07/2023] Open
Abstract
Disruption of the epithelial barrier function has been recently associated with a variety of diseases, mainly at intestinal level, but also affecting the respiratory epithelium and other mucosal barriers. Non-pharmacological approaches such as xyloglucan, with demonstrated protective barrier properties, are proposed as new alternatives for the management of a wide range of diseases, for which mucosal disruption and, particularly, tight junction alterations, is a common characteristic. Xyloglucan, a natural polysaccharide derived from tamarind seeds, possesses a "mucin-like" molecular structure that confers mucoadhesive properties, allowing xyloglucan formulations to act as a barrier capable of reducing bacterial adherence and invasion and to preserve tight junctions and paracellular flux, as observed in different in vitro and in vivo studies. In clinical trials, xyloglucan has been seen to reduce symptoms of gastroenteritis in adults and children, nasal disorders and dry eye syndrome. Similar mucosal protectors containing reticulated proteins have also been useful for the treatment of irritable bowel syndrome and urinary tract infections. The role of xyloglucan in other disorders with mucosal disruption, such as dermatological or other infectious diseases, deserves further research. In conclusion, xyloglucan, endowed with film-forming protective barrier properties, is a safe non-pharmacological alternative for the management of different diseases, such as gastrointestinal and nasal disorders.
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Affiliation(s)
- Núria Piqué
- Department of Microbiology and Parasitology, Pharmacy Faculty, Universitat de Barcelona (UB), Diagonal Sud, Facultat de Farmàcia, Edifici A, Av Joan XXIII, 27-31, 08028 Barcelona, Spain.
- Institut de Recerca en Nutrició i Seguretat Alimentària de la UB (INSA-UB), Universitat de Barcelona, 08921 Barcelona, Spain.
| | | | - María Pilar Montero
- Institute of Food Science, Technology and Nutrition (ICTAN-CSIC), 28040 Madrid, Spain.
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