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Ralli T, Saifi Z, Tyagi N, Vidyadhari A, Aeri V, Kohli K. Deciphering the role of gut metabolites in non-alcoholic fatty liver disease. Crit Rev Microbiol 2023; 49:815-833. [PMID: 36394607 DOI: 10.1080/1040841x.2022.2142091] [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: 08/06/2022] [Revised: 09/30/2022] [Accepted: 10/26/2022] [Indexed: 11/18/2022]
Abstract
Perturbations in microbial abundance or diversity in the intestinal lumen leads to intestinal inflammation and disruption of intestinal membrane which eventually facilitates the translocation of microbial metabolites or whole microbes to the liver and other organs through portal vein. This process of translocation finally leads to multitude of health disorders. In this review, we are going to focus on the mechanisms by which gut metabolites like SCFAs, tryptophan (Trp) metabolites, bile acids (BAs), ethanol, and choline can either cause the development/progression of non-alcoholic fatty liver disease (NAFLD) or serves as a therapeutic treatment for the disease. Alterations in some metabolites like SCFAs, Trp metabolites, etc., can serve as biomarker molecules whereas presence of specific metabolites like ethanol definitely leads to disease progression. Thus, proper understanding of these mechanisms will subsequently help in designing of microbiome-based therapeutic approaches. Furthermore, we have also focussed on the role of dysbiosis on the mucosal immune system. In addition, we would also compile up the microbiome-based clinical trials which are currently undergoing for the treatment of NAFLD and non-alcoholic steatohepatitis (NASH). It has been observed that the use of microbiome-based approaches like prebiotics, probiotics, symbiotics, etc., can act as a beneficial treatment option but more research needs to be done to know how to manipulate the composition of gut microbes.
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Affiliation(s)
- Tanya Ralli
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, New Delhi, India
| | - Zoya Saifi
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, New Delhi, India
| | - Neha Tyagi
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, New Delhi, India
| | - Arya Vidyadhari
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, New Delhi, India
| | - Vidhu Aeri
- Department of Pharmacognosy, School of Pharmaceutical Education and Research, New Delhi, India
| | - Kanchan Kohli
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, New Delhi, India
- Research and Publications, Llyod Institute of Management and Technology, Greater Noida, India
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Mendoza-León MJ, Mangalam AK, Regaldiz A, González-Madrid E, Rangel-Ramírez MA, Álvarez-Mardonez O, Vallejos OP, Méndez C, Bueno SM, Melo-González F, Duarte Y, Opazo MC, Kalergis AM, Riedel CA. Gut microbiota short-chain fatty acids and their impact on the host thyroid function and diseases. Front Endocrinol (Lausanne) 2023; 14:1192216. [PMID: 37455925 PMCID: PMC10349397 DOI: 10.3389/fendo.2023.1192216] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Accepted: 05/23/2023] [Indexed: 07/18/2023] Open
Abstract
Thyroid disorders are clinically characterized by alterations of L-3,5,3',5'-tetraiodothyronine (T4), L-3,5,3'-triiodothyronine (T3), and/or thyroid-stimulating hormone (TSH) levels in the blood. The most frequent thyroid disorders are hypothyroidism, hyperthyroidism, and hypothyroxinemia. These conditions affect cell differentiation, function, and metabolism. It has been reported that 40% of the world's population suffers from some type of thyroid disorder and that several factors increase susceptibility to these diseases. Among them are iodine intake, environmental contamination, smoking, certain drugs, and genetic factors. Recently, the intestinal microbiota, composed of more than trillions of microbes, has emerged as a critical player in human health, and dysbiosis has been linked to thyroid diseases. The intestinal microbiota can affect host physiology by producing metabolites derived from dietary fiber, such as short-chain fatty acids (SCFAs). SCFAs have local actions in the intestine and can affect the central nervous system and immune system. Modulation of SCFAs-producing bacteria has also been connected to metabolic diseases, such as obesity and diabetes. In this review, we discuss how alterations in the production of SCFAs due to dysbiosis in patients could be related to thyroid disorders. The studies reviewed here may be of significant interest to endocrinology researchers and medical practitioners.
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Affiliation(s)
- María José Mendoza-León
- Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
| | | | - Alejandro Regaldiz
- Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
- Facultad de Medicina Veterinaria y Agronomía, Instituto de Ciencias Naturales, Universidad de las Américas, Santiago, Chile
| | - Enrique González-Madrid
- Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
| | - Ma. Andreina Rangel-Ramírez
- Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
| | - Oscar Álvarez-Mardonez
- Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
| | - Omar P. Vallejos
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
- Millennium Institute of Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Constanza Méndez
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
- Millennium Institute of Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Susan M. Bueno
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
- Millennium Institute of Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Felipe Melo-González
- Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
| | - Yorley Duarte
- Center for Bioinformatics and Integrative Biology, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
| | - Ma. Cecilia Opazo
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
- Facultad de Medicina Veterinaria y Agronomía, Instituto de Ciencias Naturales, Universidad de las Américas, Santiago, Chile
| | - Alexis M. Kalergis
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
- Millennium Institute of Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
- Departamento de Endocrinología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Claudia A. Riedel
- Departamento de Ciencias Biológicas, Facultad de Ciencias de la Vida, Universidad Andrés Bello, Santiago, Chile
- Millennium Institute on Immunology and Immunotherapy, Santiago, Chile
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Kurlawala Z, McMillan JD, Singhal RA, Morehouse J, Burke DA, Sears SM, Duregon E, Beverly LJ, Siskind LJ, Friedland RP. Mutant and curli-producing E. coli enhance the disease phenotype in a hSOD1-G93A mouse model of ALS. Sci Rep 2023; 13:5945. [PMID: 37045868 PMCID: PMC10097672 DOI: 10.1038/s41598-023-32594-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 03/29/2023] [Indexed: 04/14/2023] Open
Abstract
The gut microbiome is a potential non-genetic contributing factor for Amyotrophic Lateral Sclerosis. Differences in gut microbial communities have been detected between ALS subjects and healthy controls, including an increase in Escherichia coli in ALS subjects. E. coli and other gram-negative bacteria produce curli proteins, which are functional bacterial amyloids. We examined whether long-term curli overexposure in the gut can exacerbate the development and progression of ALS. We utilized the slow-developing hSOD1-G93A mouse model of ALS with their C57BL/6J WT littermate controls, including males and females, with a total of 91 animals. These mice were on a normal chow diet and fed curli-producing or curli-nonproducing (mutant) E. coli in applesauce (vehicle) 3 times/week, from 1 through 7 months of age. Male hSOD1 mice demonstrated gradual slowing in running speed month 4 onwards, while females exhibited no signs of locomotive impairment even at 7 months of age. Around the same time, male hSOD1 mice showed a gradual increase in frequency of peripheral CD19+ B cells. Among the male hSOD1 group, chronic gut exposure to curli-producing E. coli led to significant shifts in α- and β-diversities. Curli-exposed males showed suppression of immune responses in circulation, but an increase in markers of inflammation, autophagy and protein turnover in skeletal muscle. Some of these markers were also changed in mutant E. coli-exposed mice, including astrogliosis in the brainstem and demyelination in the lumbar spinal cord. Overall, chronic overexposure to a commensal bacteria like E. coli led to distant organ pathology in our model, without the presence of a leaky gut at 6 months. Mechanisms underlying gut-distant organ communication are of tremendous interest to all disciplines.
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Affiliation(s)
- Zimple Kurlawala
- Department of Neurology, University of Louisville, Louisville, KY, 40202, USA
| | | | - Richa A Singhal
- KY IDeA Networks of Biomedical Research Excellence Bioinformatics Core, University of Louisville, Louisville, KY, 40202, USA
| | - Johnny Morehouse
- Kentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, KY, 40202, USA
| | - Darlene A Burke
- Kentucky Spinal Cord Injury Research Center, University of Louisville, Louisville, KY, 40202, USA
| | - Sophia M Sears
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, 40202, USA
| | - Eleonora Duregon
- National Institute on Aging, Translational Gerontology, NIH, Bethesda, USA, Maryland
| | - Levi J Beverly
- School of Medicine, University of Louisville, Louisville, KY, 40202, USA
| | - Leah J Siskind
- Department of Pharmacology and Toxicology, University of Louisville, Louisville, KY, 40202, USA
| | - Robert P Friedland
- Department of Neurology, University of Louisville, Louisville, KY, 40202, USA.
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Nami Y, Hejazi S, Geranmayeh MH, Shahgolzari M, Yari Khosroushahi A. Probiotic immunonutrition impacts on colon cancer immunotherapy and prevention. Eur J Cancer Prev 2023; 32:30-47. [PMID: 36134612 DOI: 10.1097/cej.0000000000000738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The important role of the immune system in treating cancer has attracted the attention of researchers to the emergence of oncology research. Immunotherapy has shown that the immune system is important in the fight against cancer. The challenge has led researchers to analyze the impact of immunotherapy on improving the status of the immune system, modifying the resulting safety response, reducing toxicity, and improving the results. This study aimed to discuss the potential mechanisms of probiotics in preventing colon cancer. The mechanisms include the change in intestinal microbiota, the metabolic activity of microbiota, the binding and degradation of the carcinogenic compounds present in the lumen of the intestine, the production of compounds with anticancer activity, immune system modification, intestinal dysfunction, changes in host physiology, and inhibition of cell proliferation and induction of apoptosis in cancerous cells. By contrast, very few reports have shown the harmful effects of oral probiotic supplements. According to available evidence, further studies on probiotics are needed, especially in identifying bacterial species with anticancer potential, studying the survival of the strains after passing the digestive tract, reviewing potential side effects in people with a weak immune system, and ultimately consuming and repeating its use. This study emphasizes that the nutritional formula can modulate inflammatory and immune responses in cancer patients. This effect reduces acute toxicity, although the pathways and measurement of this immune response are unclear. Nutrition safety is an emerging field in oncology, and further research is required.
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Affiliation(s)
- Yousef Nami
- Department of Food Biotechnology, Branch for Northwest & West Region, Agricultural Biotechnology Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO)
| | - Salva Hejazi
- Department of Medicine, Student Research Committee, Tabriz University of Medical Sciences
| | - Mohammad Hossein Geranmayeh
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences
| | - Mehdi Shahgolzari
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences
- Biotechnology Research Center, Tabriz University of Medical Sciences
| | - Ahmad Yari Khosroushahi
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences
- Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Relationship between obesity-related colorectal tumors and the intestinal microbiome: an animal-based trial. J Cancer Res Clin Oncol 2022:10.1007/s00432-022-04477-1. [DOI: 10.1007/s00432-022-04477-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 11/09/2022] [Indexed: 11/19/2022]
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Inhibition of Streptococcus mutans Biofilm Formation by the Joint Action of Oxyresveratrol and Lactobacillus casei. Appl Environ Microbiol 2022; 88:e0243621. [PMID: 35416682 DOI: 10.1128/aem.02436-21] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Microbial dysbiosis in dental plaque contributes to the occurrence of dental caries, to which Streptococcus mutans is a major contributor. Lactobacillus casei can be used as probiotic therapy to treat caries by replacing S. mutans within the dental plaque. However, the effects of probiotic treatment are not always stable. Oxyresveratrol (ORV), a plant-derived polyphenol, displays opposite effects in that it inhibits cariogenic and promotes commensal bacteria. Thus, the objectives of this study are to investigate the effects of ORV on bacterial proportions in S. mutans-L. casei biofilm and to elucidate how ORV weakens the competitiveness of S. mutans. Quantitative real-time PCR confirms a decreased S. mutans-L. casei ratio in dual-species biofilm by action of ORV. The culture supernatant of L. casei after being incubated with ORV (ORVLC) is prepared to explore the joint action of ORV and L. casei. ORVLC displays the strongest anti-biofilm effect against S. mutans when compared with the effects of L. casei supernatant or ORV alone. As a result of this treatment, both exopolysaccharides and bacteria contents in the biofilm are greatly reduced. The biofilm is transformed from water-insoluble glucan-dominant to water-soluble glucan-dominant by ORVLC through the modulation of the glycometabolism-related genes of S. mutans. As for the interactions between ORV and L. casei, ORV promotes L. casei to produce acetic acid, which provides L. casei with a competitive advantage against S. mutans. Taken together, ORV may be very suitable as an adjuvant medicine for probiotic therapy in the control of dental caries. IMPORTANCE The homeostatic imbalance in dental plaque associated with a sharp increase in the number of cariogenic bacteria such as Streptococcus mutans is critical for the occurrence and development of caries. Probiotic therapy can restore ecological balance by replacing cariogenic pathogens with probiotics. The current study innovatively finds that oxyresveratrol, a natural polyphenol, can provide probiotic Lactobacillus casei with competitive dominance in its dual-species biofilm with S. mutans. The joint action of oxyresveratrol and L. casei strongly inhibits the biofilm formation of S. mutans. Additionally, oxyresveratrol promotes L. casei to produce acetic acid, which facilitates L. casei to compete with S. mutans. Through the effects of these two mechanisms, oxyresveratrol leads to a significantly decreased S. mutans-L. casei ratio in their dual-species biofilm. Thus, oxyresveratrol is speculated to be an ideal medicine for the prevention and treatment of caries by regulating oral flora balance.
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Xiong Z, Peng K, Song S, Zhu Y, Gu J, Huang C, Li X. Cerebral Intraparenchymal Hemorrhage Changes Patients’ Gut Bacteria Composition and Function. Front Cell Infect Microbiol 2022; 12:829491. [PMID: 35372117 PMCID: PMC8966894 DOI: 10.3389/fcimb.2022.829491] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Accepted: 02/21/2022] [Indexed: 12/12/2022] Open
Abstract
Gut bacteria consists of 150 times more genes than humans that are vital for health. Several studies revealed that gut bacteria are associated with disease status and influence human behavior and mentality. Whether human brain injury alters the gut bacteria is yet unclear, we tested 20 fecal samples from patients with cerebral intraparenchymal hemorrhage and corresponding healthy controls through metagenomic shotgun sequencing. The composition of patients’ gut bacteria changed significantly at the phylum level; Verrucomicrobiota was the specific phylum colonized in the patients’ gut. The functional alteration was observed in the patients’ gut bacteria, including high metabolic activity for nutrients or neuroactive compounds, strong antibiotic resistance, and less virulence factor diversity. The changes in the transcription and metabolism of differential species were more evident than those of the non-differential species between groups, which is the primary factor contributing to the functional alteration of patients with cerebral intraparenchymal hemorrhage.
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Affiliation(s)
- Zujian Xiong
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
- Hunan International Scientific and Technological Cooperation Base of Brain Tumor Research, Xiangya Hospital, Central South University, Changsha, China
- Xiangya School of Medicine, Central South University, Changsha, China
| | - Kang Peng
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
- Hunan International Scientific and Technological Cooperation Base of Brain Tumor Research, Xiangya Hospital, Central South University, Changsha, China
| | - Shaoyu Song
- Department of Neurosurgery, First Affiliated Hospital of Jishou University, Jishou, China
- Centre for Clinical and Translational Medicine Research, Jishou University, Jishou, China
| | - Yongwei Zhu
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
- Hunan International Scientific and Technological Cooperation Base of Brain Tumor Research, Xiangya Hospital, Central South University, Changsha, China
| | - Jia Gu
- Hunan International Scientific and Technological Cooperation Base of Brain Tumor Research, Xiangya Hospital, Central South University, Changsha, China
| | - Chunhai Huang
- Department of Neurosurgery, First Affiliated Hospital of Jishou University, Jishou, China
- Centre for Clinical and Translational Medicine Research, Jishou University, Jishou, China
- *Correspondence: Chunhai Huang, ; Xuejun Li,
| | - Xuejun Li
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, China
- Hunan International Scientific and Technological Cooperation Base of Brain Tumor Research, Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Chunhai Huang, ; Xuejun Li,
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Doublier S, Cirrincione S, Scardaci R, Botta C, Lamberti C, Di Giuseppe F, Angelucci S, Rantsiou K, Cocolin L, Pessione E. Putative probiotics decrease cell viability and enhance chemotherapy effectiveness in human cancer cells: role of butyrate and secreted proteins. Microbiol Res 2022; 260:127012. [DOI: 10.1016/j.micres.2022.127012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 01/16/2022] [Accepted: 03/16/2022] [Indexed: 12/29/2022]
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Linehan K, Dempsey EM, Ryan CA, Ross RP, Stanton C. First encounters of the microbial kind: perinatal factors direct infant gut microbiome establishment. MICROBIOME RESEARCH REPORTS 2022; 1:10. [PMID: 38045649 PMCID: PMC10688792 DOI: 10.20517/mrr.2021.09] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 12/28/2021] [Accepted: 01/11/2022] [Indexed: 12/05/2023]
Abstract
The human gut microbiome harbors a diverse range of microbes that play a fundamental role in the health and well-being of their host. The early-life microbiome has a major influence on human development and long-term health. Perinatal factors such as maternal nutrition, antibiotic use, gestational age and mode of delivery influence the initial colonization, development, and function of the neonatal gut microbiome. The perturbed early-life gut microbiome predisposes infants to diseases in early and later life. Understanding how perinatal factors guide and shape the composition of the early-life microbiome is essential to improving infant health. The following review provides a synopsis of perinatal factors with the most decisive influences on initial microbial colonization of the infant gut.
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Affiliation(s)
- Kevin Linehan
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork P61 C996, Ireland
- APC Microbiome Ireland, Biosciences Institute, University College Cork, Lee Maltings, Cork, Cork T12 YT20, Ireland
- School of Microbiology, University College Cork, Cork T12 YN60, Ireland
| | - Eugene M. Dempsey
- APC Microbiome Ireland, Biosciences Institute, University College Cork, Lee Maltings, Cork, Cork T12 YT20, Ireland
- Department of Paediatrics & Child Health and INFANT Centre, University College Cork, Cork T12 YN60, Ireland
| | - C. Anthony Ryan
- APC Microbiome Ireland, Biosciences Institute, University College Cork, Lee Maltings, Cork, Cork T12 YT20, Ireland
- Department of Paediatrics & Child Health and INFANT Centre, University College Cork, Cork T12 YN60, Ireland
| | - R. Paul Ross
- APC Microbiome Ireland, Biosciences Institute, University College Cork, Lee Maltings, Cork, Cork T12 YT20, Ireland
- School of Microbiology, University College Cork, Cork T12 YN60, Ireland
| | - Catherine Stanton
- Teagasc Food Research Centre, Moorepark, Fermoy, Co. Cork P61 C996, Ireland
- APC Microbiome Ireland, Biosciences Institute, University College Cork, Lee Maltings, Cork, Cork T12 YT20, Ireland
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Association of circulating short chain fatty acid levels with colorectal adenomas and colorectal cancer. Clin Nutr ESPEN 2021; 46:297-304. [PMID: 34857211 DOI: 10.1016/j.clnesp.2021.09.740] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 09/02/2021] [Accepted: 09/26/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Short chain fatty acid (SCFAs) are bacterially derived metabolites suggested to have protective roles against colorectal cancer (CRC) development. However, there is sparse evidence from epidemiological studies in this context. Here, we assessed whether circulating SCFA concentrations varied in patients with colorectal adenomas (CRA) and CRC. METHODS Levels of seven SCFAs were extracted from plasma samples and determined by gas chromatography for 213 individuals from Ireland and the Czech Republic (CRC, n = 84; CRA, n = 66; controls, n = 63). RESULTS In the Irish CRA/CRC cohort, only levels of 2-MethylButyric acid were significantly higher in cancers compared to the adenoma and control groups (p-values = 0.016 and 0.043). Using regression analysis, we observed that levels of Acetic and Propionic acid were associated with an increased CRC risk in the Czech cohort (Odd Ratio (OR): 1.02; 95% Confidence interval (CI): 1.00-1.03; OR: 1.29; 95% CI: 1.05-1.59, respectively), while i-Valeric and Valeric acid levels were associated with a decreased cancer risk (OR: 0.92; 95% CI: 0.86-0.99; OR: 0.67; 95% CI: 0.44-1.00). In the Irish cohort, levels of SCFAs were not associated with CRC risk. CONCLUSIONS The association with colorectal neoplasia varied between the studied SCFAs. Future studies need to confirm these findings and address the mechanism of how these acids may promote or prevent colorectal carcinogenesis.
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Yao Y, Cai X, Ye Y, Wang F, Chen F, Zheng C. The Role of Microbiota in Infant Health: From Early Life to Adulthood. Front Immunol 2021; 12:708472. [PMID: 34691021 PMCID: PMC8529064 DOI: 10.3389/fimmu.2021.708472] [Citation(s) in RCA: 85] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 09/17/2021] [Indexed: 12/11/2022] Open
Abstract
From early life to adulthood, the microbiota play a crucial role in the health of the infant. The microbiota in early life are not only a key regulator of infant health but also associated with long-term health. Pregnancy to early life is the golden time for the establishment of the infant microbiota, which is affected by both environmental and genetic factors. Recently, there is an explosion of the studies on the role of microbiota in human diseases, but the application to disease or health is relatively limited because many aspects of human microbiota remain controversial, especially about the infant microbiota. Therefore, a critical and conclusive review is necessary to understand fully the relationship between the microbiota and the health of infant. In this article, we introduce in detail the role of microbiota in the infant from pregnancy to early life to long-term health. The main contents of this article include the relationship between the maternal microbiota and adverse pregnancy outcomes, the establishment of the neonatal microbiota during perinatal period and early life, the composition of the infant gut microbiota, the prediction of the microbiota for long-term health, and the future study directions of microbiota.
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Affiliation(s)
- Yao Yao
- Department of Pharmacy, Women's Hospital School of Medicine Zhejiang University, Hangzhou, China
| | - Xiaoyu Cai
- Department of Clinical Pharmacology, Key Laboratory of Clinical Cancer Pharmacology and Toxicology Research of Zhejiang Province, Affiliated Hangzhou First People's Hospital, Cancer Center, Zhejiang University School of Medicine, Hangzhou, China
| | - Yiqing Ye
- Department of Pharmacy, Women's Hospital School of Medicine Zhejiang University, Hangzhou, China
| | - Fengmei Wang
- Department of Pharmacy, Women's Hospital School of Medicine Zhejiang University, Hangzhou, China
| | - Fengying Chen
- Department of Pharmacy, Women's Hospital School of Medicine Zhejiang University, Hangzhou, China
| | - Caihong Zheng
- Department of Pharmacy, Women's Hospital School of Medicine Zhejiang University, Hangzhou, China
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Ralli T, Neupane YR, Saifi Z, Kohli K. Gut microbiota as an emerging therapeutic avenue for the treatment of non-alcoholic fatty liver disease. Curr Pharm Des 2021; 27:4677-4685. [PMID: 34176456 DOI: 10.2174/1389201022666210625141526] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Accepted: 05/10/2021] [Indexed: 12/02/2022]
Abstract
Non-alcoholic fatty liver disease (NAFLD) is one of the leading causes of death related to liver diseases worldwide. Despite this, there is no specific treatment that is approved for the disease till now, which could be due to a poor understanding of the pathophysiology of this disease. In the past few decades, several scientists have speculated the root cause of NAFLD to be dysbalance in the gut microbiome resulting in a susceptibility totheinflammatory cascade in the liver. Herein, we hypothesize to fabricate a novel formulation containing prebiotic with probiotics, which, thereby would help in maintaining the gut homeostasis, and used for the treatment of NAFLD. The proposed novel formulation would contain a Bifidobacteriumsp. with Faecalibacteriumprausnitzii in the presence of a dietary fibre having hepatoprotective activity. These two strains of probiotics would help in increasing the concentration of butyrate in the gut, which in turn would inhibit intestinal inflammation and maintain gut integrity. The dietary fibre would serve a dual mechanism; firstly they would act as a prebiotic, which helps in the proliferation of administered probiotics and secondly, would protect the liver via own hepatoprotective action. This combinatorial approach would pave a new therapeutic avenue for the treatment of NAFLD.
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Affiliation(s)
- Tanya Ralli
- Department of Pharmaceutics, School of Pharmaceutical Education & Research, JamiaHamdard, New Delhi, India
| | - Yub Raj Neupane
- Department of Pharmacy, National University of Singapore, Singapore
| | - Zoya Saifi
- Department of Pharmaceutics, School of Pharmaceutical Education & Research, JamiaHamdard, New Delhi, India
| | - Kanchan Kohli
- Department of Pharmaceutics, School of Pharmaceutical Education & Research, JamiaHamdard, New Delhi, India
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13
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Aneke-Nash C, Yoon G, Du M, Liang P. Antibiotic use and colorectal neoplasia: a systematic review and meta-analysis. BMJ Open Gastroenterol 2021; 8:bmjgast-2021-000601. [PMID: 34083227 PMCID: PMC8174505 DOI: 10.1136/bmjgast-2021-000601] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 04/14/2021] [Accepted: 04/25/2021] [Indexed: 02/06/2023] Open
Abstract
Background and aims Colorectal cancer (CRC) is the third most common cancer for women and men and the second leading cause of cancer death in the USA. There is emerging evidence that the gut microbiome plays a role in CRC development, and antibiotics are one of the most common exposures that can alter the gut microbiome. We performed a systematic review and meta-analysis to characterise the association between antibiotic use and colorectal neoplasia. Methods We searched PubMed, EMBASE, and Web of Science for articles that examined the association between antibiotic exposure and colorectal neoplasia (cancer or adenoma) through 15 December 2019. A total of 6031 citations were identified and 6 papers were included in the final analysis. We assessed the association between the level of antibiotic use (defined as number of courses or duration of therapy) and colorectal neoplasia using a random effects model. Results Six studies provided 16 estimates of the association between level of antibiotic use and colorectal neoplasia. Individuals with the highest levels of antibiotic exposure had a 10% higher risk of colorectal neoplasia than those with the lowest exposure (effect size: 1.10, 95% CI 1.01 to 1.18). We found evidence of high heterogeneity (I2=79%, p=0.0001) but not of publication bias. Conclusions Higher levels of antibiotic exposure is associated with an increased risk of colorectal neoplasia. Given the widespread use of antibiotics in childhood and early adulthood, additional research to further characterise this relationship is needed.
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Affiliation(s)
- Chino Aneke-Nash
- Department of Medicine, NYU Langone Medical Center, New York, New York, USA
| | - Garrett Yoon
- Department of Medicine, NYU Langone Medical Center, New York, New York, USA
| | - Mengmeng Du
- Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Peter Liang
- Department of Medicine, NYU Langone Medical Center, New York, New York, USA.,Division of Gastroenterology, VA NY Harbor Healthcare System Manhattan Campus Veterans Learning Resources Center, New York, New York, USA
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14
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Zhang YK, Zhang Q, Wang YL, Zhang WY, Hu HQ, Wu HY, Sheng XZ, Luo KJ, Zhang H, Wang M, Huang R, Wang GY. A Comparison Study of Age and Colorectal Cancer-Related Gut Bacteria. Front Cell Infect Microbiol 2021; 11:606490. [PMID: 33996615 PMCID: PMC8121496 DOI: 10.3389/fcimb.2021.606490] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 04/06/2021] [Indexed: 12/24/2022] Open
Abstract
Intestinal microbiota is gaining increasing interest from researchers, and a series of studies proved that gut bacteria plays a significant role in various malignancies, especially in colorectal cancer (CRC). In this study, a cohort of 34 CRC patients (average age=65 years old), 26 young volunteers (below 30 years old), and 26 old volunteers (over 60 years old) was enrolled. 16S ribosomal RNA gene sequencing was used to explore fecal bacteria diversity. The operational taxonomic unit (OTU) clustering analysis and NMDS (non-metric multidimensional scaling) analysis were used to separate different groups. Cluster of ortholog genes (COG) functional annotation and Kyoto encyclopedia of genes and genomes (KEGG) were used to detect enriched pathways among three groups. Community separations were observed among the three groups of this cohort. Clostridia, Actinobacteria, Bifidobacterium, and Fusobacteria were the most enriched bacteria in the young group, old group, and CRC group respectively. Also, in the young, old, and CRC group, the ratio of Firmicutes/Bacteroidetes was increased sequentially despite no statistical differences. Further, COG showed that transcription, cell wall/membrane/envelope biogenesis, inorganic ion transport and metabolism, and signal transduction mechanisms were differentially expressed among three groups. KEGG pathways associated with ABC transporters, amino sugar and nucleotide sugar metabolism, arginine and proline metabolism, and aminoacyl-tRNA biosynthesis also showed statistical differences among the three groups. These results indicated that the intestinal bacterial community varied as age changed and was related to CRC, and we discussed that specific bacteria enriched in the young and old group may exert a protective function, while bacteria enriched in the CRC group may promote tumorigenesis.
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Affiliation(s)
- Yu-Kun Zhang
- Department of Colorectal Cancer, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Qian Zhang
- Department of Colorectal Cancer, Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou, China
| | - Yu-Liuming Wang
- Department of Colorectal Cancer, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Wei-Yuan Zhang
- Department of Colorectal Cancer, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Han-Qing Hu
- Department of Colorectal Cancer, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Hong-Yu Wu
- Department of Colorectal Cancer, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Xiang-Zong Sheng
- Department of Colorectal Cancer, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Kang-Jia Luo
- Department of Colorectal Cancer, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Hao Zhang
- Department of Colorectal Cancer, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Meng Wang
- Department of Colorectal Cancer, Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou, China
| | - Rui Huang
- Department of Colorectal Cancer, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, China
| | - Gui-Yu Wang
- Department of Colorectal Cancer, The 2nd Affiliated Hospital of Harbin Medical University, Harbin, China.,Department of Colorectal Cancer, Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou, China
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15
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Genua F, Raghunathan V, Jenab M, Gallagher WM, Hughes DJ. The Role of Gut Barrier Dysfunction and Microbiome Dysbiosis in Colorectal Cancer Development. Front Oncol 2021; 11:626349. [PMID: 33937029 PMCID: PMC8082020 DOI: 10.3389/fonc.2021.626349] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 03/12/2021] [Indexed: 02/06/2023] Open
Abstract
Accumulating evidence indicates that breakdown of the+ protective mucosal barrier of the gut plays a role in colorectal cancer (CRC) development. Inflammation and oxidative stress in the colonic epithelium are thought to be involved in colorectal carcinogenesis and the breakdown of the integrity of the colonic barrier may increase the exposure of colonocytes to toxins from the colonic milieu, enhancing inflammatory processes and release of Reactive Oxygen Species (ROS). The aetiological importance of the gut microbiome and its composition - influenced by consumption of processed meats, red meats and alcoholic drinks, smoking, physical inactivity, obesity - in CRC development is also increasingly being recognized. The gut microbiome has diverse roles, such as in nutrient metabolism and immune modulation. However, microbial encroachment towards the colonic epithelium may promote inflammation and oxidative stress and even translocation of species across the colonic lumen. Recent research suggests that factors that modify the above mechanisms, e.g., obesity and Western diet, also alter gut microbiota, degrade the integrity of the gut protective barrier, and expose colonocytes to toxins. However, it remains unclear how obesity, lifestyle and metabolic factors contribute to gut-barrier integrity, leading to metabolic disturbance, colonocyte damage, and potentially to CRC development. This review will discuss the interactive roles of gut-barrier dysfunction, microbiome dysbiosis, and exposure to endogenous toxins as another mechanism in CRC development, and how biomarkers of colonic mucosal barrier function may provide avenues for disease, prevention and detection.
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Affiliation(s)
- Flavia Genua
- Cancer Biology and Therapeutics Laboratory, Conway Institute, School of Biomedical and Biomolecular Sciences, University College Dublin, Dublin, Ireland
| | - Vedhika Raghunathan
- College of Literature, Sciences, and the Arts, University of Michigan, Ann Arbor, MI, United States
| | - Mazda Jenab
- Section of Nutrition and Metabolism, International Agency for Research on Cancer (IARC-WHO), Lyon, France
| | - William M. Gallagher
- Cancer Biology and Therapeutics Laboratory, Conway Institute, School of Biomedical and Biomolecular Sciences, University College Dublin, Dublin, Ireland
| | - David J. Hughes
- Cancer Biology and Therapeutics Laboratory, Conway Institute, School of Biomedical and Biomolecular Sciences, University College Dublin, Dublin, Ireland
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16
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Raheem A, Liang L, Zhang G, Cui S. Modulatory Effects of Probiotics During Pathogenic Infections With Emphasis on Immune Regulation. Front Immunol 2021; 12:616713. [PMID: 33897683 PMCID: PMC8060567 DOI: 10.3389/fimmu.2021.616713] [Citation(s) in RCA: 58] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 02/12/2021] [Indexed: 12/11/2022] Open
Abstract
In order to inhibit pathogenic complications and to enhance animal and poultry growth, antibiotics have been extensively used for many years. Antibiotics applications not only affect target pathogens but also intestinal beneficially microbes, inducing long-lasting changes in intestinal microbiota associated with diseases. The application of antibiotics also has many other side effects like, intestinal barrier dysfunction, antibiotics residues in foodstuffs, nephropathy, allergy, bone marrow toxicity, mutagenicity, reproductive disorders, hepatotoxicity carcinogenicity, and antibiotic-resistant bacteria, which greatly compromise the efficacy of antibiotics. Thus, the development of new antibiotics is necessary, while the search for antibiotic alternatives continues. Probiotics are considered the ideal antibiotic substitute; in recent years, probiotic research concerning their application during pathogenic infections in humans, aquaculture, poultry, and livestock industry, with emphasis on modulating the immune system of the host, has been attracting considerable interest. Hence, the adverse effects of antibiotics and remedial effects of probiotics during infectious diseases have become central points of focus among researchers. Probiotics are live microorganisms, and when given in adequate quantities, confer good health effects to the host through different mechanisms. Among them, the regulation of host immune response during pathogenic infections is one of the most important mechanisms. A number of studies have investigated different aspects of probiotics. In this review, we mainly summarize recent discoveries and discuss two important aspects: (1) the application of probiotics during pathogenic infections; and (2) their modulatory effects on the immune response of the host during infectious and non-infectious diseases.
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Affiliation(s)
- Abdul Raheem
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
- Scientific Observation and Experiment Station of Veterinary Drugs and Diagnostic Technology of Beijing, Ministry of Agriculture, Beijing, China
| | - Lin Liang
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
- Scientific Observation and Experiment Station of Veterinary Drugs and Diagnostic Technology of Beijing, Ministry of Agriculture, Beijing, China
| | - Guangzhi Zhang
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
- Scientific Observation and Experiment Station of Veterinary Drugs and Diagnostic Technology of Beijing, Ministry of Agriculture, Beijing, China
| | - Shangjin Cui
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
- Scientific Observation and Experiment Station of Veterinary Drugs and Diagnostic Technology of Beijing, Ministry of Agriculture, Beijing, China
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17
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Miller AL, Bessho S, Grando K, Tükel Ç. Microbiome or Infections: Amyloid-Containing Biofilms as a Trigger for Complex Human Diseases. Front Immunol 2021; 12:638867. [PMID: 33717189 PMCID: PMC7952436 DOI: 10.3389/fimmu.2021.638867] [Citation(s) in RCA: 56] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 02/09/2021] [Indexed: 12/14/2022] Open
Abstract
The human microbiota is the community of microorganisms that live upon or within their human host. The microbiota consists of various microorganisms including bacteria, fungi, viruses, and archaea; the gut microbiota is comprised mostly of bacteria. Many bacterial species within the gut microbiome grow as biofilms, which are multicellular communities embedded in an extracellular matrix. Studies have shown that the relative abundances of bacterial species, and therefore biofilms and bacterial byproducts, change during progression of a variety of human diseases including gastrointestinal, autoimmune, neurodegenerative, and cancer. Studies have shown the location and proximity of the biofilms within the gastrointestinal tract might impact disease outcome. Gram-negative enteric bacteria secrete the amyloid curli, which makes up as much as 85% of the extracellular matrix of enteric biofilms. Curli mediates cell-cell attachment and attachment to various surfaces including extracellular matrix components such as fibronectin and laminin. Structurally, curli is strikingly similar to pathological and immunomodulatory human amyloids such as amyloid-β, which has been implicated in Alzheimer's disease, α-synuclein, which is involved in Parkinson's disease, and serum amyloid A, which is secreted during the acute phase of inflammation. The immune system recognizes both bacterial amyloid curli and human amyloids utilizing the same receptors, so curli also induces inflammation. Moreover, recent work indicates that curli can participate in the self-assembly process of pathological human amyloids. Curli is found within biofilms of commensal enteric bacteria as well as invasive pathogens; therefore, evidence suggests that curli contributes to complex human diseases. In this review, we summarize the recent findings on how bacterial biofilms containing curli participate in the pathological and immunological processes in gastrointestinal diseases, systemic autoimmune diseases, and neurodegenerative diseases.
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Affiliation(s)
- Amanda L Miller
- Department of Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, United States
| | - Shingo Bessho
- Department of Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, United States
| | - Kaitlyn Grando
- Department of Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, United States
| | - Çagla Tükel
- Department of Microbiology and Immunology, Lewis Katz School of Medicine, Temple University, Philadelphia, PA, United States
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18
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Pessione E. The Russian Doll Model: How Bacteria Shape Successful and Sustainable Inter-Kingdom Relationships. Front Microbiol 2020; 11:573759. [PMID: 33193180 PMCID: PMC7606975 DOI: 10.3389/fmicb.2020.573759] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 08/31/2020] [Indexed: 12/20/2022] Open
Abstract
Successful inter-kingdom relationships are based upon a dynamic balance between defense and cooperation. A certain degree of competition is necessary to guarantee life spread and development. On the other hand, cooperation is a powerful tool to ensure a long lasting adaptation to changing environmental conditions and to support evolution to a higher level of complexity. Bacteria can interact with their (true or potential) parasites (i.e., phages) and with their multicellular hosts. In these model interactions, bacteria learnt how to cope with their inner and outer host, transforming dangerous signals into opportunities and modulating responses in order to achieve an agreement that is beneficial for the overall participants, thus giving rise to a more complex "organism" or ecosystem. In this review, particular attention will be addressed to underline the minimal energy expenditure required for these successful interactions [e.g., moonlighting proteins, post-translational modifications (PTMs), and multitasking signals] and the systemic vision of these processes and ways of life in which the system proves to be more than the sum of the single components. Using an inside-out perspective, I will examine the possibility of multilevel interactions, in which viruses help bacteria to cope with the animal host and bacteria support the human immune system to counteract viral infection in a circular vision. In this sophisticated network, bacteria represent the precious link that insures system stability with relative low energy expenditure.
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Affiliation(s)
- Enrica Pessione
- Department of Life Sciences and Systems Biology, School of Nature Sciences, Università degli Studi di Torino, Turin, Italy
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19
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A simplified method for the quantitation of short-chain fatty acids in human stool. Anal Biochem 2020; 612:114016. [PMID: 33188741 DOI: 10.1016/j.ab.2020.114016] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 11/01/2020] [Accepted: 11/03/2020] [Indexed: 12/11/2022]
Abstract
A one-vial extraction method for the quantitation of short-chain fatty acids (SCFAs) in human stool was developed. Samples were extracted with an acidified aqueous internal standard solution, sodium sulfate, and diethyl ether, followed by analysis with GC-FID. Accuracy, in terms of relative recovery, was typically between 90 and 110% for most analytes; without internal standard, the accuracy was about 5-34%; the linear dynamic range (LDR) was 0.05-50 μmol per gram; the limit of detection (LOD) was less than or equal to 0.05 μmol per gram; and the (lower) limit of quantitation (LOQ) was 1 μmol per gram. The method is suitable for quantitating acetic acid, propanoic acid, isobutyric acid, butyric acid, isovaleric acid, valeric acid, isohexanoic acid, hexanoic acid, and heptanoic acid. It is not suitable for the quantitation of formic acid. Application to human biological research was tested by the measurement of SCFA in heathy humans. This confirmed that the method performed adequately, and even better than expected, with values up to 150 μmol per gram.
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20
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Cruz BCS, Sarandy MM, Messias AC, Gonçalves RV, Ferreira CLLF, Peluzio MCG. Preclinical and clinical relevance of probiotics and synbiotics in colorectal carcinogenesis: a systematic review. Nutr Rev 2020; 78:667-687. [PMID: 31917829 DOI: 10.1093/nutrit/nuz087] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
CONTEXT Recent evidence suggests that modulation of the gut microbiota may help prevent colorectal cancer. OBJECTIVE The aim of this systematic review was to investigate the role of probiotics and synbiotics in the prevention of colorectal cancer and to clarify potential mechanisms involved. DATA SOURCES The PubMed, ScienceDirect, and LILACS databases were searched for studies conducted in humans or animal models and published up to August 15, 2018. STUDY SELECTION Clinical trials and placebo-controlled experimental studies that evaluated the effects of probiotics and synbiotics in colorectal cancer and cancer associated with inflammatory bowel disease were included. Of 247 articles identified, 31 remained after exclusion criteria were applied. A search of reference lists identified 5 additional studies, for a total of 36 included studies. DATA EXTRACTION Two authors independently assessed risk of bias of included studies and extracted data. Data were pooled by type of study, ie, preclinical or clinical. RESULTS The results showed positive effects of probiotics and synbiotics in preventing colorectal cancer. The main mechanisms identified were alterations in the composition and metabolic activity of the intestinal microbiota; reduction of inflammation; induction of apoptosis and inhibition of tumor growth; modulation of immune responses and cell proliferation; enhanced function of the intestinal barrier; production of compounds with anticarcinogenic activity; and modulation of oxidative stress. CONCLUSIONS Probiotics or synbiotics may help prevent colorectal cancer, but additional studies in humans are required to better inform clinical practice.
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Affiliation(s)
- Bruna C S Cruz
- Department of Nutrition and Health, Nutritional Biochemistry Laboratory, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Mariáurea M Sarandy
- Department of Animal Biology, Experimental Pathology Laboratory, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Anny C Messias
- Department of Nutrition and Health, Nutritional Biochemistry Laboratory, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Reggiani V Gonçalves
- Department of Animal Biology, Experimental Pathology Laboratory, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Célia L L F Ferreira
- Institute of Biotechnology Applied to Agriculture (BIOAGRO), Laboratory of Dairy Cultures, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
| | - Maria C G Peluzio
- Department of Nutrition and Health, Nutritional Biochemistry Laboratory, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil
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21
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Biobaku F, Ghanim H, Monte SV, Caruana JA, Dandona P. Bariatric Surgery: Remission of Inflammation, Cardiometabolic Benefits, and Common Adverse Effects. J Endocr Soc 2020; 4:bvaa049. [PMID: 32775937 PMCID: PMC7402590 DOI: 10.1210/jendso/bvaa049] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Accepted: 08/03/2020] [Indexed: 02/07/2023] Open
Abstract
Obesity is associated with increased mortality as a result of several comorbidities which occur in tandem with the obese state. Chronic inflammation is well documented in obesity, and evidence from numerous studies support the notion that the increased inflammation in individuals with obesity accentuates the comorbidities seen in this condition. The remission of comorbidities such as metabolic, cardiovascular, and neurological complications occurs following bariatric procedures. Bariatric surgery significantly reduces mortality and results in remarkable weight loss and reversal in several obesity-related comorbidities. There is indisputable evidence that the resolution of inflammation that occurs after bariatric surgery mitigates some of these comorbidities. With the increasing use of bariatric surgery for the treatment of severe obesity, it is pivotal to elucidate the underlying mechanisms responsible for the notable improvements seen after the procedure. This review summarizes underlying mechanisms responsible for the remission of obesity-related abnormalities and discusses the common adverse effects of bariatric surgery. Well-stratified, large-scale studies are still needed for a proper evaluation of these underlying mechanisms.
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Affiliation(s)
- Fatimo Biobaku
- Division of Endocrinology, Diabetes and Metabolism, State University of New York at Buffalo, New York
| | - Husam Ghanim
- Division of Endocrinology, Diabetes and Metabolism, State University of New York at Buffalo, New York
| | - Scott V Monte
- Synergy Bariatrics (Erie County Medical Center), Williamsville, NY
| | - Joseph A Caruana
- Synergy Bariatrics (Erie County Medical Center), Williamsville, NY
| | - Paresh Dandona
- Division of Endocrinology, Diabetes and Metabolism, State University of New York at Buffalo, New York
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22
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Qian L, Huang J, Qin H. Probiotics and dietary intervention modulate the colonic mucosa-associated microbiota in high-fat diet populations. TURKISH JOURNAL OF GASTROENTEROLOGY 2020; 31:295-304. [PMID: 32412900 DOI: 10.5152/tjg.2020.19013] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND/AIMS Alterations in the gut microbiota due to a high-fat diet and diet-induced illness have been found in both mouse models and humans. Observational studies suggest that probiotic administration and diet shifts may treat diet-related diseases. However, the effect of these interventions on the colonic mucosa has not yet been elucidated. This study investigated the efficacy of probiotic supplementation and dietary intervention as prophylactic tools under high-fat diet conditions. MATERIALS AND METHODS A total of 36 volunteers that normally consumed a high-fat diet were enrolled and treated with either a control diet, a low-fat dietary intervention, Bifidobacterium triple viable capsule therapy, or a combination of a low-fat diet and Bifidobacterium triple viable capsule therapy. Pyrosequencing of the V3 and V4 regions of the 16S rRNA genes was conducted to determine the extent to which probiotics and dietary intervention altered the mucosal microbiota. RESULTS This study demonstrated that interventional treatment with probiotics and a low-fat diet increased the diversity of the mucosal microbes, dietary intervention alone produced the most significant effect, whereas the combined intervention exhibited no synergetic improvement. Pyrosequencing demonstrated that probiotics and dietary intervention significantly elevated the abundance of some bacterial taxa assigned to the phylum Firmicutes and the beneficial genera Prevotella, Gemmiger, Coprococcus, and Faecalibacterium and reduced some harmful bacterial taxa assigned to the phylum Proteobacteria and genus Streptophyta. CONCLUSION The results of this study suggested that the addition of probiotics and dietary intervention could improve the composition of the colonic mucosal microbiota in high-fat diet populations.
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Affiliation(s)
- Leimin Qian
- Department of Gastrointestinal Surgery, Jiangyin People's Hospital, Jiangsu, China
| | - Jianming Huang
- Department of Gastrointestinal Surgery, Jiangyin People's Hospital, Jiangsu, China
| | - Huanlong Qin
- The Tenth People's Hospital Affiliated to Tongji University, Shanghai, China
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23
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The Role of Probiotics in Colorectal Cancer Management. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:3535982. [PMID: 32148539 PMCID: PMC7048916 DOI: 10.1155/2020/3535982] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 01/16/2020] [Accepted: 01/23/2020] [Indexed: 12/13/2022]
Abstract
Colorectal cancer (CRC) is one of the most common cancerous diseases worldwide and causes leading cancer-associated deaths. Several factors are related to the incidence of CRC such as unhealthy diet and lifestyle, heredity, metabolic disorders, and genetic factors. Even though several advanced medical procedures are available for CRC treatment, the survival rates are poor with many adverse treatments associated side effects, which affects the quality of life. Probiotics are a well-known bioactive candidate for the treatment of several diseases and ill-health conditions. The recent scientific evidence suggested that probiotic supplementation protects the CRC patients from treatment-associated adverse effects. The manuscript summarizes the influence of probiotic supplementation on the health status of CRC patients and discusses the possible mechanism behind the protective effect of probiotics against CRC. The literature survey revealed that beneficial impact of probiotic supplementation depends on several factors such as strain, dosage, duration of the intervention, host physiology, and other food supplements. The probiotic intervention improves the microbiota, releases antimicrobials and anticarcinogenic agents, helps to remove carcinogens, and improves the intestinal permeability, tight junction function, and enzyme activity in CRC patients. Besides, not all probiotic strains exhibit anti-CRC activities; it is necessary to screen the potent strain for the development of a probiotic-based therapeutic agent to control or prevent the incidence of CRC.
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24
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Zhu S, Jiang Y, Xu K, Cui M, Ye W, Zhao G, Jin L, Chen X. The progress of gut microbiome research related to brain disorders. J Neuroinflammation 2020; 17:25. [PMID: 31952509 PMCID: PMC6969442 DOI: 10.1186/s12974-020-1705-z] [Citation(s) in RCA: 221] [Impact Index Per Article: 55.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 01/07/2020] [Indexed: 02/06/2023] Open
Abstract
There is increasing evidence showing that the dynamic changes in the gut microbiota can alter brain physiology and behavior. Cognition was originally thought to be regulated only by the central nervous system. However, it is now becoming clear that many non-nervous system factors, including the gut-resident bacteria of the gastrointestinal tract, regulate and influence cognitive dysfunction as well as the process of neurodegeneration and cerebrovascular diseases. Extrinsic and intrinsic factors including dietary habits can regulate the composition of the microbiota. Microbes release metabolites and microbiota-derived molecules to further trigger host-derived cytokines and inflammation in the central nervous system, which contribute greatly to the pathogenesis of host brain disorders such as pain, depression, anxiety, autism, Alzheimer’s diseases, Parkinson’s disease, and stroke. Change of blood–brain barrier permeability, brain vascular physiology, and brain structure are among the most critical causes of the development of downstream neurological dysfunction. In this review, we will discuss the following parts:
Overview of technical approaches used in gut microbiome studies Microbiota and immunity Gut microbiota and metabolites Microbiota-induced blood–brain barrier dysfunction Neuropsychiatric diseases
■ Stress and depression ■ Pain and migraine ■ Autism spectrum disorders
Neurodegenerative diseases
■ Parkinson’s disease ■ Alzheimer’s disease ■ Amyotrophic lateral sclerosis ■ Multiple sclerosis
Cerebrovascular disease
■ Atherosclerosis ■ Stroke ■ Arteriovenous malformation
Conclusions and perspectives
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Affiliation(s)
- Sibo Zhu
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China.,Fudan University Taizhou Institute of Health Sciences, Taizhou, China.,Department of Epidemiology, School of Public Health, Fudan University, Shanghai, China
| | - Yanfeng Jiang
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China.,Fudan University Taizhou Institute of Health Sciences, Taizhou, China
| | - Kelin Xu
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China.,Fudan University Taizhou Institute of Health Sciences, Taizhou, China.,School of Data Science, Fudan University, Shanghai, China
| | - Mei Cui
- Department of Neurology, Huashan Hospital, Fudan University, Shanghai, China
| | - Weimin Ye
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Genming Zhao
- School of Data Science, Fudan University, Shanghai, China
| | - Li Jin
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China.,Fudan University Taizhou Institute of Health Sciences, Taizhou, China.,Human Phenome Institute, Fudan University, 825 Zhangheng Road, Shanghai, 201203, China
| | - Xingdong Chen
- State Key Laboratory of Genetic Engineering and Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, China. .,Fudan University Taizhou Institute of Health Sciences, Taizhou, China. .,Human Phenome Institute, Fudan University, 825 Zhangheng Road, Shanghai, 201203, China.
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25
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De Angelis M, Garruti G, Minervini F, Bonfrate L, Portincasa P, Gobbetti M. The Food-gut Human Axis: The Effects of Diet on Gut Microbiota and Metabolome. Curr Med Chem 2019; 26:3567-3583. [PMID: 28462705 DOI: 10.2174/0929867324666170428103848] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 03/15/2017] [Accepted: 03/15/2017] [Indexed: 02/08/2023]
Abstract
Gut microbiota, the largest symbiont community hosted in human organism, is emerging as a pivotal player in the relationship between dietary habits and health. Oral and, especially, intestinal microbes metabolize dietary components, affecting human health by producing harmful or beneficial metabolites, which are involved in the incidence and progression of several intestinal related and non-related diseases. Habitual diet (Western, Agrarian and Mediterranean omnivore diets, vegetarian, vegan and gluten-free diets) drives the composition of the gut microbiota and metabolome. Within the dietary components, polymers (mainly fibers, proteins, fat and polyphenols) that are not hydrolyzed by human enzymes seem to be the main leads of the metabolic pathways of gut microbiota, which in turn directly influence the human metabolome. Specific relationships between diet and microbes, microbes and metabolites, microbes and immune functions and microbes and/or their metabolites and some human diseases are being established. Dietary treatments with fibers are the most effective to benefit the metabolome profile, by improving the synthesis of short chain fatty acids and decreasing the level of molecules, such as p-cresyl sulfate, indoxyl sulfate and trimethylamine N-oxide, involved in disease state. Based on the axis diet-microbiota-health, this review aims at describing the most recent knowledge oriented towards a profitable use of diet to provide benefits to human health, both directly and indirectly, through the activity of gut microbiota.
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Affiliation(s)
- Maria De Angelis
- Department of Soil, Plant and Food Science, University of Bari Aldo Moro, Bari, Italy
| | - Gabriella Garruti
- Department of Emergency and Organ Transplants, Section of Endocrinology, Andrology and Metabolic Diseases, University of Bari Medical School, Bari, Italy
| | - Fabio Minervini
- Department of Soil, Plant and Food Science, University of Bari Aldo Moro, Bari, Italy
| | - Leonilde Bonfrate
- Department of Soil, Plant and Food Science, University of Bari Aldo Moro, Bari, Italy.,Clinica Medica "A. Murri", Department of Biomedical Sciences and Human Oncology, University of Bari Medical School, Bari, Italy
| | - Piero Portincasa
- Clinica Medica "A. Murri", Department of Biomedical Sciences and Human Oncology, University of Bari Medical School, Bari, Italy
| | - Marco Gobbetti
- Faculty of Science and Technology, Free University of Bozen, Bolzano, Italy
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Picardo SL, Coburn B, Hansen AR. The microbiome and cancer for clinicians. Crit Rev Oncol Hematol 2019; 141:1-12. [PMID: 31202124 DOI: 10.1016/j.critrevonc.2019.06.004] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 05/23/2019] [Accepted: 06/03/2019] [Indexed: 02/07/2023] Open
Abstract
The human microbiome is an emerging target in cancer development and therapeutics. It may be directly oncogenic, through promotion of mucosal inflammation or systemic dysregulation, or may alter anti-cancer immunity/therapy. Microorganisms within, adjacent to and distant from tumors may affect cancer progression, and interactions and differences between these populations can influence the course of disease. Here we review the microbiome as it pertains to cancer for clinicians. The microbiota of cancers including colorectal, pancreas, breast and prostate are discussed. We examine "omics" technologies, microbiota associated with tumor tissue and tumor-site fluids such as feces and urine, as well as indirect effects of the gut microbiome. We describe roles of the microbiome in immunotherapy, and how it can be modulated to improve cancer therapeutics. While research is still at an early stage, there is potential to exploit the microbiome, as modulation may increase efficacy of treatments, reduce toxicities and prevent carcinogenesis.
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Affiliation(s)
- Sarah L Picardo
- Division of Medical Oncology and Haematology, Princess Margaret Cancer Centre, 700 University Avenue, Toronto, Ontario, M5G 0A1, Canada.
| | - Bryan Coburn
- Division of Infectious Diseases, University Health Network, Toronto, Canada.
| | - Aaron R Hansen
- Division of Medical Oncology and Haematology, Princess Margaret Cancer Centre, 700 University Avenue, Toronto, Ontario, M5G 0A1, Canada.
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Vitellio P, Celano G, Bonfrate L, Gobbetti M, Portincasa P, De Angelis M. Effects of Bifidobacterium longum and Lactobacillus rhamnosus on Gut Microbiota in Patients with Lactose Intolerance and Persisting Functional Gastrointestinal Symptoms: A Randomised, Double-Blind, Cross-Over Study. Nutrients 2019; 11:E886. [PMID: 31010241 PMCID: PMC6520754 DOI: 10.3390/nu11040886] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 04/13/2019] [Accepted: 04/16/2019] [Indexed: 02/07/2023] Open
Abstract
Functional gastrointestinal symptoms are frequent, and may be driven by several pathogenic mechanisms. Symptoms may persist in lactose intolerant (LI) patients (i.e., subjects with intestinal lactase deficiency, lactose malabsorption producing symptoms), after a lactose-free diet. Our hypothesis was that probiotic and vitamin B6 treatment may be useful to alleviate symptoms in LI patients through a positive modulation of gut microbial composition and relative metabolism. We aimed to test the efficacy of a novel formulation of Bifidobacterium longum BB536 and Lactobacillus rhamnosus HN001 plus vitamin B6 (ZR) in 23 LI subjects with persistent symptoms during a lactose-free diet. Symptoms, microbiome, and metabolome were measured at baseline and after 30 days in a crossover, randomized, double-blind study of ZR versus placebo (PL). Compared with PL, the administration of probiotics and vitamin B6 significantly decreased bloating (p = 0.028) and ameliorated constipation (p = 0.045). Fecal microbiome differed between ZR and PL. ZR drove the enrichment of several genera involved in lactose digestion including Bifidobacerium. Moreover, the relative abundance of acetic acid, 2-methyl-propanoic acid, nonenal, and indolizine 3-methyl increased, while phenol decreased. Our findings highlight the importance of selected probiotics and vitamin B6 to alleviate symptoms and gut dysbiosis in lactose intolerant patients with persistent functional gastrointestinal symptoms.
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Affiliation(s)
- Paola Vitellio
- Department of Soil, Plant and Food Sciences, University of Bari Aldo Moro, via Amendola 165/a, 70126 Bari, Italy.
- Clinica Medica "A. Murri", Department of Biomedical Sciences and Human Oncology, University of Bari Medical School, 70121 Bari, Italy.
| | - Giuseppe Celano
- Department of Soil, Plant and Food Sciences, University of Bari Aldo Moro, via Amendola 165/a, 70126 Bari, Italy.
| | - Leonilde Bonfrate
- Clinica Medica "A. Murri", Department of Biomedical Sciences and Human Oncology, University of Bari Medical School, 70121 Bari, Italy.
| | - Marco Gobbetti
- Faculty of Science and Technology, Free University of Bolzano, piazza Università, 5, 39100 Bolzano, Italy.
| | - Piero Portincasa
- Clinica Medica "A. Murri", Department of Biomedical Sciences and Human Oncology, University of Bari Medical School, 70121 Bari, Italy.
| | - Maria De Angelis
- Department of Soil, Plant and Food Sciences, University of Bari Aldo Moro, via Amendola 165/a, 70126 Bari, Italy.
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Jones RB, Alderete TL, Kim JS, Millstein J, Gilliland FD, Goran MI. High intake of dietary fructose in overweight/obese teenagers associated with depletion of Eubacterium and Streptococcus in gut microbiome. Gut Microbes 2019; 10:712-719. [PMID: 30991877 PMCID: PMC6866686 DOI: 10.1080/19490976.2019.1592420] [Citation(s) in RCA: 75] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Background: A western high fat, high carbohydrate diet has been shown to be associated with decreased gut bacterial diversity and reductions in beneficial bacteria. This gut bacteria dysbiosis could develop in early life and contribute to chronic disease risk such as obesity, type 2 diabetes and non-alcoholic fatty liver disease.Objective: To determine how dietary macronutrients are associated with the relative abundance of gut bacteria in healthy adolescents.Methods: Fifty-two obese participants (12-19 years) from two studies, many who were primarily of Hispanic background, provided fecal samples for 16S rRNA gene sequencing. Dietary macronutrients were assessed using 24-hour diet recalls and body composition was assessed using DEXA. General regression models assuming a negative binomial distribution were used to examine the associations between gut bacteria and dietary fiber, saturated fat, unsaturated fats, protein, added sugar, total sugar and free fructose after adjusting for age, gender, race/ethnicity, body fat percentage, study and caloric intake.Results: The genera Eubacterium (Benjamini-Hochberg (BH) corrected p-value = 0.10) and Streptococcus (BH corrected p-value = 0.04) were inversely associated with dietary fructose intake. There were no other significant associations between abundances of gut microbes and other dietary macronutrients, including fiber, fat, protein, total sugar or added sugar.Conclusions: High dietary fructose was associated with lower abundance of the beneficial microbes Eubacterium and Streptococcus, which are involved with carbohydrate metabolism.
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Affiliation(s)
- Roshonda B Jones
- Department of Pediatrics, The Saban Research Institute, Children’s Hospital Los Angeles, University of Southern California, Los Angeles, CA, USA,CONTACT Michael I. Goran, PhD Department of Pediatrics, Keck School of Medicine of USC, The Saban Research Institute, Children’s Hospital of Los Angeles, 4661 Sunset Blvd, Los Angeles, CA 90027, USA
| | - Tanya L Alderete
- Department of Integrative Physiology, University of Colorado at Boulder, Boulder, CO, USA
| | - Jeniffer S Kim
- Division of Environmental Health, Department of Preventive Medicine, University of Southern California, Los Angeles, CA, USA
| | - Joshua Millstein
- Division of Biostatistics, Department of Preventive Medicine, University of Southern California, Los Angeles, CA, USA
| | - Frank D Gilliland
- Division of Environmental Health, Department of Preventive Medicine, University of Southern California, Los Angeles, CA, USA
| | - Michael I Goran
- Department of Pediatrics, The Saban Research Institute, Children’s Hospital Los Angeles, University of Southern California, Los Angeles, CA, USA
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Al Hinai EA, Kullamethee P, Rowland IR, Swann J, Walton GE, Commane DM. Modelling the role of microbial p-cresol in colorectal genotoxicity. Gut Microbes 2018; 10:398-411. [PMID: 30359553 PMCID: PMC6546321 DOI: 10.1080/19490976.2018.1534514] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Background: A greater understanding of mechanisms explaining the interactions between diet and the gut microbiota in colorectal cancer is desirable. Genotoxic microbial metabolites present in the colon may be implicated in carcinogenesis and potentially influenced by diet. Aims: We hypothesised that microbial p-cresol is a colonic genotoxin and set out to model potential exposures in the colon and the effects of these exposures on colonic cells. Methods: Batch culture fermentations with human faecal inoculate were used to determine the synthesis of p-cresol and other metabolites in response to various substrates. The fermentation supernatants were evaluated for genotoxicity and the independent effects of p-cresol on colonic cells were studied in vitro. Results: In batch culture fermentation, supplementary protein increased the synthesis of phenols, indoles and p-cresol, whereas supplementary fructoligosaccharide (FOS) increased the synthesis of short chain fatty acids. The p-cresol was the greatest predictor of genotoxicity against colonocytes in the fermentation supernatants. Spiking fermentation supernatants with exogenous p-cresol further increased DNA damage, and independently p-cresol induced DNA damage in a dose-dependent manner against HT29 and Caco-2 cells and influenced cell cycle kinetics. Conclusions: In the colon p-cresol may reach physiologically significant concentrations which contribute to genotoxic exposures in the intestinal lumen, p-cresol production may be attenuated by substrate, and therefore diet, making it a potential modifiable biomarker of genotoxicity in the colon.
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Affiliation(s)
- Eiman Abdulla Al Hinai
- Department of Food and Nutritional Sciences, University of Reading, Reading, UK,Dietetics Department, Al Nahdha Hospital, Ministry of Health, Muscat, Sultanate of Oman
| | - Piyarach Kullamethee
- Department of innovation and technology of product development, Faculty of Agro-industry, King Mongkut’s University of Technology North Bangkok, Prachinburi, Thailand
| | - Ian R. Rowland
- Department of Food and Nutritional Sciences, University of Reading, Reading, UK
| | - Jonathan Swann
- Faculty of Medicine, Department of Surgery & Cancer, Imperial College London, London, UK
| | - Gemma E. Walton
- Department of Food and Nutritional Sciences, University of Reading, Reading, UK
| | - Daniel M. Commane
- Department of Applied and Health Sciences, University of Northumbria, Newcastle Upon Tyne, UK,CONTACT Daniel M. Commane Department of Applied and Health Sciences, University of Northumbria, Newcastle Upon Tyne, United Kingdom
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Gut Microbiota and Iron: The Crucial Actors in Health and Disease. Pharmaceuticals (Basel) 2018; 11:ph11040098. [PMID: 30301142 PMCID: PMC6315993 DOI: 10.3390/ph11040098] [Citation(s) in RCA: 164] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 09/30/2018] [Accepted: 10/02/2018] [Indexed: 02/07/2023] Open
Abstract
Iron (Fe) is a highly ample metal on planet earth (~35% of the Earth’s mass) and is particularly essential for most life forms, including from bacteria to mammals. Nonetheless, iron deficiency is highly prevalent in developing countries, and oral administration of this metal is so far the most effective treatment for human beings. Notably, the excessive amount of unabsorbed iron leave unappreciated side effects at the highly interactive host–microbe interface of the human gastrointestinal tract. Recent advances in elucidating the molecular basis of interactions between iron and gut microbiota shed new light(s) on the health and pathogenesis of intestinal inflammatory diseases. We here aim to present the dynamic modulation of intestinal microbiota by iron availability, and conversely, the influence on dietary iron absorption in the gut. The central part of this review is intended to summarize our current understanding about the effects of luminal iron on host–microbe interactions in the context of human health and disease.
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31
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Alexander JL, Scott AJ, Pouncey AL, Marchesi J, Kinross J, Teare J. Colorectal carcinogenesis: an archetype of gut microbiota-host interaction. Ecancermedicalscience 2018; 12:865. [PMID: 30263056 PMCID: PMC6145524 DOI: 10.3332/ecancer.2018.865] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Indexed: 12/14/2022] Open
Abstract
Sporadic colorectal cancer (CRC) remains a major cause of worldwide mortality. Epidemiological evidence of markedly increased risk in populations that migrate to Western countries, or adopt their lifestyle, suggests that CRC is a disease whose aetiology is defined primarily by interactions between the host and his environment. The gut microbiome sits directly at this interface and is now increasingly recognised as a modulator of colorectal carcinogenesis. Bacteria such as Fusobacterium nucleatum and Escherichia coli (E. Coli) are found in abundance in patients with CRC and have been shown in experimental studies to promote neoplasia. A whole armamentarium of bacteria-derived oncogenic mechanisms has been defined, including the subversion of apoptosis and the production of genotoxins and pro-inflammatory factors. But the microbiota may also be protective: for example, they are implicated in the metabolism of dietary fibre to produce butyrate, a short chain fatty acid, which is anti-inflammatory and anti-carcinogenic. Indeed, although our understanding of this immensely complex, highly individualised and multi-faceted relationship is expanding rapidly, many questions remain: Can we define friends and foes, and drivers and passengers? What are the critical functions of the microbiota in the context of colorectal neoplasia?
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Affiliation(s)
- James L Alexander
- Centre for Digestive and Gut Health, Department of Surgery and Cancer, Imperial College London, 10th Floor QEQM Building, St Mary's Hospital, South Wharf Road, London W2 1NY, UK
| | - Alasdair J Scott
- Centre for Digestive and Gut Health, Department of Surgery and Cancer, Imperial College London, 10th Floor QEQM Building, St Mary's Hospital, South Wharf Road, London W2 1NY, UK
| | - Anna L Pouncey
- Centre for Digestive and Gut Health, Department of Surgery and Cancer, Imperial College London, 10th Floor QEQM Building, St Mary's Hospital, South Wharf Road, London W2 1NY, UK
| | - Julian Marchesi
- Centre for Digestive and Gut Health, Department of Surgery and Cancer, Imperial College London, 10th Floor QEQM Building, St Mary's Hospital, South Wharf Road, London W2 1NY, UK
| | - James Kinross
- Centre for Digestive and Gut Health, Department of Surgery and Cancer, Imperial College London, 10th Floor QEQM Building, St Mary's Hospital, South Wharf Road, London W2 1NY, UK
| | - Julian Teare
- Centre for Digestive and Gut Health, Department of Surgery and Cancer, Imperial College London, 10th Floor QEQM Building, St Mary's Hospital, South Wharf Road, London W2 1NY, UK
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32
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Dos Reis SA, do Carmo Gouveia Peluzio M, Bressan J. The use of antimicrobials as adjuvant therapy for the treatment of obesity and insulin resistance: Effects and associated mechanisms. Diabetes Metab Res Rev 2018; 34:e3014. [PMID: 29660230 DOI: 10.1002/dmrr.3014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Revised: 02/18/2018] [Accepted: 04/04/2018] [Indexed: 12/20/2022]
Abstract
The intestinal microbiota has come to be considered an additional risk factor for the development of metabolic diseases. Considering the potential role of antimicrobials as modulators of the intestinal microbiota, they have been investigated for use in the adjuvant treatment of obesity and insulin resistance (IR). In this regard, the present manuscript aimed to review the effect of regular use of antimicrobials on the treatment of obesity and/or IR, as well as its associated mechanisms. The regular use of antimicrobials does not seem to influence the body weight and adiposity of its consumer. Regarding IR, clinical trials did not observe positive effects, on the other hand, most of the experimental studies observed an increase in insulin sensitivity. The mechanisms used by antimicrobials that could lead to the improvement of insulin sensitivity are dependent on the modulation of the intestinal microbiota. This modulation would lead to a reduction in the stimulation of the immune system, as a consequence of improved intestinal barrier and/or the reduction of gram-negative bacteria in the microbiota. In addition, the secretion of glucagon-like peptide-1 would be modulated by metabolites produced by the intestinal microbiota, such as secondary bile acids and short-chain fatty acids. Based on the results obtained to date, more studies should be performed to elucidate the effect of these drugs on obesity and IR, as well as the mechanisms involved. In addition, the cost-benefit of the regular use of antimicrobials should be investigated, as this practice may lead to the development of antimicrobial-resistant microorganisms.
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Affiliation(s)
| | | | - Josefina Bressan
- Department of Nutrition and Health, Universidade Federal de Viçosa, Viçosa, Brazil
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33
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Curtis JT, Assefa S, Francis A, Köhler GA. Fecal microbiota in the female prairie vole (Microtus ochrogaster). PLoS One 2018; 13:e0190648. [PMID: 29579049 PMCID: PMC5868765 DOI: 10.1371/journal.pone.0190648] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 12/18/2017] [Indexed: 12/15/2022] Open
Abstract
We examined the fecal microbiota of female prairie voles. This species is socially and, likely, sexually monogamous, and thus serves as a valuable model in which to examine the interaction between the microbiota-gut-brain axis and social behavior. At present, little is known about the gastrointestinal microbiota of prairie voles; therefore, we performed a first characterization of the fecal microbiota using 16S rRNA gene amplicon sequencing. Semiconductor sequencing technology on an Ion Torrent PGM platform was used to assess the composition of fecal microbiotas from twelve female prairie voles. Following quality filtering, 1,017,756 sequencing reads were classified from phylum to genus level. At the phylum level, Firmicutes, Bacteroidetes, and Saccharibacteria were the predominant taxa, while the Bacteriodales, Erysipelotrichaceae, Ruminococcaceae, and Lachnospiraceae contributed the most dominant microbial groups and genera. Microbial community membership was most similar between vole sibling pairs, but consideration of taxon abundances weakened these associations. The interdependence of host factors such as genetics and behavior with the gastrointestinal microbiota is likely to be particularly pronounced in prairie voles. Our pilot characterization of the prairie vole intestinal microbiota revealed a microbial community composition remarkably consistent with the monogastric alimentary system of these rodents and their diet rich in complex plant carbohydrates. The highly social nature of these animals poses specific challenges to microbiome analyses that nonetheless are valuable for advancing research on the microbiota-gut-brain-behavior axis. Our study provides an important basis for future microbiome research in this emerging model organism for studying social behavior.
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Affiliation(s)
- J. Thomas Curtis
- Department of Pharmacology and Physiology, Oklahoma State University Center for Health Sciences, Tulsa, Oklahoma, United States of America
| | - Senait Assefa
- Department of Biochemistry and Microbiology, Oklahoma State University Center for Health Sciences, Tulsa, Oklahoma, United States of America
| | - Amie Francis
- Department of Pharmacology and Physiology, Oklahoma State University Center for Health Sciences, Tulsa, Oklahoma, United States of America
| | - Gerwald A. Köhler
- Department of Biochemistry and Microbiology, Oklahoma State University Center for Health Sciences, Tulsa, Oklahoma, United States of America
- * E-mail:
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Jones RB, Zhu X, Moan E, Murff HJ, Ness RM, Seidner DL, Sun S, Yu C, Dai Q, Fodor AA, Azcarate-Peril MA, Shrubsole MJ. Inter-niche and inter-individual variation in gut microbial community assessment using stool, rectal swab, and mucosal samples. Sci Rep 2018; 8:4139. [PMID: 29515151 PMCID: PMC5841359 DOI: 10.1038/s41598-018-22408-4] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 02/22/2018] [Indexed: 12/21/2022] Open
Abstract
The purpose of this study is to evaluate similarities and differences in gut bacterial measurements and stability in the microbial communities of three different types of samples that could be used to assess different niches of the gut microbiome: rectal swab, stool, and normal rectal mucosa samples. In swab-stool comparisons, there were substantial taxa differences with some taxa varying largely by sample type (e.g. Thermaceae), inter-individual subject variation (e.g. Desulfovibrionaceae), or by both sample type and participant (e.g. Enterobacteriaceae). Comparing all three sample types with whole-genome metagenome shotgun sequencing, swab samples were much closer to stool samples than mucosa samples although all KEGG functional Level 1 and Level 2 pathways were significantly different across all sample types (e.g. transcription and environmental adaptation). However, the individual signature of participants was also observed and was largely stable between two time points. Thus, we found that while the distribution of some taxa was associated with these different sampling techniques, other taxa largely reflected individual differences in the microbial community that were insensitive to sampling technique. There is substantial variability in the assessment of the gut microbial community according to the type of sample.
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Affiliation(s)
- Roshonda B Jones
- Department of Bioinformatics and Genomics, University of North Carolina at Charlotte, Charlotte, NC, USA
| | - Xiangzhu Zhu
- Department of Medicine, Division of Epidemiology, Vanderbilt Epidemiology Center, Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Emili Moan
- Department of Statistics, North Carolina State University, Raleigh, NC, 27695, USA
| | - Harvey J Murff
- Department of Medicine, Division of Epidemiology, Vanderbilt Epidemiology Center, Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Reid M Ness
- Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Douglas L Seidner
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Shan Sun
- Department of Bioinformatics and Genomics, University of North Carolina at Charlotte, Charlotte, NC, USA
| | - Chang Yu
- Department of Biostatistics, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Qi Dai
- Department of Medicine, Division of Epidemiology, Vanderbilt Epidemiology Center, Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Anthony A Fodor
- Department of Bioinformatics and Genomics, University of North Carolina at Charlotte, Charlotte, NC, USA
| | - M Andrea Azcarate-Peril
- Department of Medicine, and Microbiome Core Facility, School of Medicine, University of North Carolina, Chapel Hill, NC, USA
| | - Martha J Shrubsole
- Department of Medicine, Division of Epidemiology, Vanderbilt Epidemiology Center, Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA.
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Wu M, Wu Y, Deng B, Li J, Cao H, Qu Y, Qian X, Zhong G. Isoliquiritigenin decreases the incidence of colitis-associated colorectal cancer by modulating the intestinal microbiota. Oncotarget 2018; 7:85318-85331. [PMID: 27863401 PMCID: PMC5356739 DOI: 10.18632/oncotarget.13347] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 10/26/2016] [Indexed: 12/12/2022] Open
Abstract
Imbalances in intestinal bacteria correlate with colitis-associated colorectal cancer (CAC). Traditional Chinese medicines have been used to adjust the gut microbiota, and isoliquiritigenin (ISL), a flavonoid extracted from licorice, has shown antitumor efficacy. In this study, the effects of ISL on CAC development and the gut microbiota were evaluated using an azoxymethane and dextran sulphate sodium (AOM/DSS)-induced mouse model of CAC (CACM). Histopathological analysis suggested that ISL reduced tumor incidence in vivo. Moreover, high-throughput sequencing and terminal restriction fragment length polymorphism (T-RFLP) studies of the bacterial 16S rRNA gene revealed that the structure of the gut microbial community shifted significantly following AOM/DSS treatment, and that effect was alleviated by treatment with high-dose ISL (150 mg/kg). Compared to the microbiota in the control mice (CK), the levels of Bacteroidetes decreased and the levels of Firmicutes increased during CAC development. ISL reversed the imbalance at the phylum level and altered the familial constituents of the gut microbiota. Specifically, the abundance of Helicobacteraceae increased after treatment with high-dose ISL, while the abundance of Lachnospiraceae and Rikenellaceae decreased. At the genus level, ISL reduced the abundance of opportunistic pathogens (Escherichia and Enterococcus), and increased the levels of probiotics, particularly butyrate-producing bacteria (Butyricicoccus, Clostridium, and Ruminococcus). Thus, ISL protects mice from AOM/DSS-induced CAC, and ISL and the gut microbiota may have synergistic anti-cancer effects.
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Affiliation(s)
- Minna Wu
- College of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan, China.,Henan Collaborative Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University, Xinxiang, Henan, China
| | - Yaqi Wu
- College of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan, China
| | - Baoguo Deng
- College of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan, China
| | - Jinsong Li
- Department of Pathology, the First Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, China
| | - Haiying Cao
- College of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan, China
| | - Yan Qu
- College of Basic Medicine, Xinxiang Medical University, Xinxiang, Henan, China
| | - Xinlai Qian
- Department of Pathology, the Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, China
| | - Genshen Zhong
- Laboratory of Cancer Biotherapy, Institute of Neurology, the First Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, China.,Henan Collaborative Innovation Center of Molecular Diagnosis and Laboratory Medicine, Xinxiang Medical University, Xinxiang, Henan, China
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Wiley NC, Dinan TG, Ross RP, Stanton C, Clarke G, Cryan JF. The microbiota-gut-brain axis as a key regulator of neural function and the stress response: Implications for human and animal health. J Anim Sci 2018; 95:3225-3246. [PMID: 28727115 DOI: 10.2527/jas.2016.1256] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The brain-gut-microbiota axis comprises an extensive communication network between the brain, the gut, and the microbiota residing there. Development of a diverse gut microbiota is vital for multiple features of behavior and physiology, as well as many fundamental aspects of brain structure and function. Appropriate early-life assembly of the gut microbiota is also believed to play a role in subsequent emotional and cognitive development. If the composition, diversity, or assembly of the gut microbiota is impaired, this impairment can have a negative impact on host health and lead to disorders such as obesity, diabetes, inflammatory diseases, and even potentially neuropsychiatric illnesses, including anxiety and depression. Therefore, much research effort in recent years has focused on understanding the potential of targeting the intestinal microbiota to prevent and treat such disorders. This review aims to explore the influence of the gut microbiota on host neural function and behavior, particularly those of relevance to stress-related disorders. The involvement of microbiota in diverse neural functions such as myelination, microglia function, neuronal morphology, and blood-brain barrier integrity across the life span, from early life to adolescence to old age, will also be discussed. Nurturing an optimal gut microbiome may also prove beneficial in animal science as a means to manage stressful situations and to increase productivity of farm animals. The implications of these observations are manifold, and researchers are hopeful that this promising body of preclinical work can be successfully translated to the clinic and beyond.
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Liu Y, Upadhyaya B, Fardin-Kia AR, Juenemann RM, Dey M. Dietary resistant starch type 4-derived butyrate attenuates nuclear factor-kappa-B1 through modulation of histone H3 trimethylation at lysine 27. Food Funct 2018; 7:3772-3781. [PMID: 27713965 DOI: 10.1039/c6fo00856a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Indigestible resistant starches (RS) are substrates for gut-microbial metabolism and have been shown to attenuate intestinal inflammation but the supporting evidence is inconsistent and lacks mechanistic explanation. We have recently reported dietary RS type 4 (RS4) induced improvements in immunometabolic functions in humans and a concomitant increase in butyrogenic gut-bacteria. Since inflammation is a key component in metabolic diseases, here we investigated the effects of RS4-derived butyrate on the epigenetic repression of pro-inflammatory genes in vivo and in vitro. RS4-fed mice, compared to the control-diet group, had higher cecal butyrate and increased tri-methylation of lysine 27 on histone 3 (H3K27me3) in the promoter of nuclear factor-kappa-B1 (NFκB1) in the colon tissue. The H3K27me3-enrichment inversely correlated with the concentration dependent down-regulation of NFκB1 in sodium butyrate treated human colon epithelial cells. Two additional inflammatory genes were attenuated by sodium butyrate, but were not linked with H3K27me3 changes. This exploratory study presents a new opportunity for studying underlying H3K27me3 and other methylation modifying mechanisms linked to RS4 biological activity.
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Affiliation(s)
- Yi Liu
- Department of Health and Nutritional Sciences, Box 2203, South Dakota State University, Brookings, SD 57007, USA.
| | - Bijaya Upadhyaya
- Department of Health and Nutritional Sciences, Box 2203, South Dakota State University, Brookings, SD 57007, USA.
| | - Ali Reza Fardin-Kia
- Office of Regulatory Science, Center for Food Safety and Applied Nutrition, HFS-717, US Food and Drug Administration, College Park, MD 20740, USA
| | - Robert M Juenemann
- Department of Health and Nutritional Sciences, Box 2203, South Dakota State University, Brookings, SD 57007, USA.
| | - Moul Dey
- Department of Health and Nutritional Sciences, Box 2203, South Dakota State University, Brookings, SD 57007, USA.
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Milani C, Duranti S, Bottacini F, Casey E, Turroni F, Mahony J, Belzer C, Delgado Palacio S, Arboleya Montes S, Mancabelli L, Lugli GA, Rodriguez JM, Bode L, de Vos W, Gueimonde M, Margolles A, van Sinderen D, Ventura M. The First Microbial Colonizers of the Human Gut: Composition, Activities, and Health Implications of the Infant Gut Microbiota. Microbiol Mol Biol Rev 2017; 81:e00036-17. [PMID: 29118049 PMCID: PMC5706746 DOI: 10.1128/mmbr.00036-17] [Citation(s) in RCA: 947] [Impact Index Per Article: 135.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The human gut microbiota is engaged in multiple interactions affecting host health during the host's entire life span. Microbes colonize the neonatal gut immediately following birth. The establishment and interactive development of this early gut microbiota are believed to be (at least partially) driven and modulated by specific compounds present in human milk. It has been shown that certain genomes of infant gut commensals, in particular those of bifidobacterial species, are genetically adapted to utilize specific glycans of this human secretory fluid, thus representing a very intriguing example of host-microbe coevolution, where both partners are believed to benefit. In recent years, various metagenomic studies have tried to dissect the composition and functionality of the infant gut microbiome and to explore the distribution across the different ecological niches of the infant gut biogeography of the corresponding microbial consortia, including those corresponding to bacteria and viruses, in healthy and ill subjects. Such analyses have linked certain features of the microbiota/microbiome, such as reduced diversity or aberrant composition, to intestinal illnesses in infants or disease states that are manifested at later stages of life, including asthma, inflammatory bowel disease, and metabolic disorders. Thus, a growing number of studies have reported on how the early human gut microbiota composition/development may affect risk factors related to adult health conditions. This concept has fueled the development of strategies to shape the infant microbiota composition based on various functional food products. In this review, we describe the infant microbiota, the mechanisms that drive its establishment and composition, and how microbial consortia may be molded by natural or artificial interventions. Finally, we discuss the relevance of key microbial players of the infant gut microbiota, in particular bifidobacteria, with respect to their role in health and disease.
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Affiliation(s)
- Christian Milani
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Sabrina Duranti
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Francesca Bottacini
- APC Microbiome Institute and School of Microbiology, National University of Ireland, Cork, Ireland
| | - Eoghan Casey
- APC Microbiome Institute and School of Microbiology, National University of Ireland, Cork, Ireland
| | - Francesca Turroni
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
- Microbiome Research Hub, University of Parma, Parma, Italy
| | - Jennifer Mahony
- APC Microbiome Institute and School of Microbiology, National University of Ireland, Cork, Ireland
| | - Clara Belzer
- Laboratory of Microbiology, Wageningen University, Wageningen, The Netherlands
| | - Susana Delgado Palacio
- Departamento de Microbiologia y Bioquimica de Productos Lacteos, IPLA-CSIC, Villaviciosa, Asturias, Spain
| | - Silvia Arboleya Montes
- Departamento de Microbiologia y Bioquimica de Productos Lacteos, IPLA-CSIC, Villaviciosa, Asturias, Spain
| | - Leonardo Mancabelli
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Gabriele Andrea Lugli
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
| | - Juan Miguel Rodriguez
- Department of Nutrition, Food Science and Food Technology, Complutense University of Madrid, Madrid, Spain
| | - Lars Bode
- Department of Pediatrics and Larsson-Rosenquist Foundation Mother-Milk-Infant Center of Research Excellence, University of California-San Diego, La Jolla, California, USA
| | - Willem de Vos
- Laboratory of Microbiology, Wageningen University, Wageningen, The Netherlands
- Department of Bacteriology & Immunology, RPU Immunobiology, University of Helsinki, Helsinki, Finland
| | - Miguel Gueimonde
- Departamento de Microbiologia y Bioquimica de Productos Lacteos, IPLA-CSIC, Villaviciosa, Asturias, Spain
| | - Abelardo Margolles
- Departamento de Microbiologia y Bioquimica de Productos Lacteos, IPLA-CSIC, Villaviciosa, Asturias, Spain
| | - Douwe van Sinderen
- APC Microbiome Institute and School of Microbiology, National University of Ireland, Cork, Ireland
| | - Marco Ventura
- Laboratory of Probiogenomics, Department of Chemistry, Life Sciences and Environmental Sustainability, University of Parma, Parma, Italy
- Microbiome Research Hub, University of Parma, Parma, Italy
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Jala VR, Maturu P, Bodduluri SR, Krishnan E, Mathis S, Subbarao K, Wang M, Jenson AB, Proctor ML, Rouchka EC, Knight R, Haribabu B. Leukotriene B 4-receptor-1 mediated host response shapes gut microbiota and controls colon tumor progression. Oncoimmunology 2017; 6:e1361593. [PMID: 29209564 DOI: 10.1080/2162402x.2017.1361593] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 07/24/2017] [Accepted: 07/26/2017] [Indexed: 02/07/2023] Open
Abstract
Inflammation and infection are key promoters of colon cancer but the molecular interplay between these events is largely unknown. Mice deficient in leukotriene B4 receptor1 (BLT1) are protected in inflammatory disease models of arthritis, asthma and atherosclerosis. In this study, we show that BLT1-/- mice when bred onto a spontaneous tumor (ApcMin/+) model displayed an increase in the rate of intestinal tumor development and mortality. A paradoxical increase in inflammation in the tumors from the BLT1-/-ApcMin/+ mice is coincidental with defective host response to infection. Germ-free BLT1-/-ApcMin/+ mice are free from colon tumors that reappeared upon fecal transplantation. Analysis of microbiota showed defective host response in BLT1-/- ApcMin/+ mice reshapes the gut microbiota to promote colon tumor development. The BLT1-/-MyD88-/- double deficient mice are susceptible to lethal neonatal infections. Broad-spectrum antibiotic treatment eliminated neonatal lethality in BLT1-/-MyD88-/- mice and the BLT1-/-MyD88-/-ApcMin+ mice are protected from colon tumor development. These results identify a novel interplay between the Toll-like receptor mediated microbial sensing mechanisms and BLT1-mediated host response in the control of colon tumor development.
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Affiliation(s)
- Venkatakrishna R Jala
- James Graham Brown Cancer Center, University of Louisville Health Sciences Center, Louisville, KY, USA.,Department of Microbiology and Immunology, University of Louisville Health Sciences Center, Louisville, KY, USA
| | - Paramahamsa Maturu
- James Graham Brown Cancer Center, University of Louisville Health Sciences Center, Louisville, KY, USA.,Department of Microbiology and Immunology, University of Louisville Health Sciences Center, Louisville, KY, USA
| | - Sobha R Bodduluri
- James Graham Brown Cancer Center, University of Louisville Health Sciences Center, Louisville, KY, USA.,Department of Microbiology and Immunology, University of Louisville Health Sciences Center, Louisville, KY, USA
| | - Elangovan Krishnan
- James Graham Brown Cancer Center, University of Louisville Health Sciences Center, Louisville, KY, USA.,Department of Microbiology and Immunology, University of Louisville Health Sciences Center, Louisville, KY, USA
| | - Steven Mathis
- James Graham Brown Cancer Center, University of Louisville Health Sciences Center, Louisville, KY, USA.,Department of Microbiology and Immunology, University of Louisville Health Sciences Center, Louisville, KY, USA
| | - Krishnaprasad Subbarao
- James Graham Brown Cancer Center, University of Louisville Health Sciences Center, Louisville, KY, USA.,Department of Microbiology and Immunology, University of Louisville Health Sciences Center, Louisville, KY, USA
| | - Min Wang
- James Graham Brown Cancer Center, University of Louisville Health Sciences Center, Louisville, KY, USA.,Department of Microbiology and Immunology, University of Louisville Health Sciences Center, Louisville, KY, USA
| | - Alfred B Jenson
- Department of Pathology, University of Louisville Health Sciences Center, Louisville, KY, USA
| | - Mary L Proctor
- Research Resources Center, University of Louisville Health Sciences Center, Louisville, KY, USA
| | - Eric C Rouchka
- Department of Computer Engineering & Computer Science, Speed School of Engineering, University of Louisville, Louisville, KY, USA
| | - Rob Knight
- Center for Microbiome Innovation, University of California San Diego, La Jolla, CA, USA
| | - Bodduluri Haribabu
- James Graham Brown Cancer Center, University of Louisville Health Sciences Center, Louisville, KY, USA.,Department of Microbiology and Immunology, University of Louisville Health Sciences Center, Louisville, KY, USA
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Seifi K, Karimi-Torshizi MA, Deldar H. Probiotics intake from proximal or distal gastrointestinal tract: The investigation on intestinal morphology and performance of Japanese quail. J Anim Physiol Anim Nutr (Berl) 2017; 102:e509-e512. [PMID: 28691244 DOI: 10.1111/jpn.12781] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Accepted: 06/15/2017] [Indexed: 01/03/2023]
Abstract
The aim of the present study was to investigate the efficacy of early single-dose probiotics administered from proximal or distal gastrointestinal tract on quails' performance and small intestinal morphology. A total of 120 Japanese quail (Coturnix coturnix japonica) 1-d-old chicks were divided into the following experimental groups before being transferred to the raising room: (i) control (no probiotic administered); (ii) oral group (received probiotics via oesophageal gavage); and (iii) vent lip group (received probiotics directly into vent). Four replicates of 10 chicks per cage were considered for each treatment and birds were raised up to 35 days in the same conditions with ad libitum access to feed and water. A commercial probiotics (Protexin, Somerset, UK) used in this study contained 2 × 109 cfu/g of nine different micro-organisms. On day 35, all birds were weighed and then three birds in every pen were killed via cervical dislocation. Two cm of mid-point of duodenum and ileum were cut for histomorphology assays. Both probiotics-treated groups had higher body weight and body weight gain than control (p < .01). Ileum was longer in probiotics-treated groups than in the control (p < .01). Orally treated birds had the highest duodenum villus height and crypt depth (p < .01). In the cloacally treated quails, ileum villus length was higher than the both other groups, and crypts' depth was deeper than the control (p < .01). The numbers of both types of goblet cells (acidic mucin producer and neutral mucin producer) were higher in the birds receiving probiotics than control birds (p < .01). Although there were no statistical differences in performance values between the different ways of probiotics entrance into gut, some intestinal histomorphometric parameters were improved in ileum of the birds receiving probiotics through distal gut that is cloaca (p < .01).
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Affiliation(s)
- K Seifi
- Department of Poultry Science, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
| | - M A Karimi-Torshizi
- Department of Poultry Science, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
| | - H Deldar
- Department of Animal Science, Faculty of Animal Science and Fisheries, Sari Agricultural Sciences and Natural Sciences University, Sari, Irani
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Zamora-Gasga VM, Montalvo-González E, Loarca-Piña G, Vázquez-Landaverde PA, Tovar J, Sáyago-Ayerdi SG. Microbial metabolites profile during in vitro human colonic fermentation of breakfast menus consumed by Mexican school children. Food Res Int 2017; 97:7-14. [PMID: 28578066 DOI: 10.1016/j.foodres.2017.03.038] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Revised: 03/16/2017] [Accepted: 03/19/2017] [Indexed: 12/14/2022]
Abstract
The nutrition transition promotes the development of childhood obesity. Currently, Mexico is affected by this serious public health problem. The nutritional and functional characterization of a whole menu has a number of advantages over the study of single nutrients. Since breakfast is considered the most important meal of the day, this study aimed to evaluate the metabolite profile produced by in vitro human colonic fermentation of the isolated indigestible fraction (IF) from three different Mexican breakfast (M-B) menus (Modified "MM-B", traditional "TM-B", and alternative "AM-B"), previously identified as commonly consumed by Mexican schoolchildren in Nayarit State, Mexico. The M-B's consist of egg, corn tortilla, beans (higher in TM-B), sugar and chocolate powder (higher in AM-B) and milk, combined in different proportions. The IF in all breakfasts was about 4.7-5.6g/100g FW, with a relatively high content of protein (≈21%), which might have negative physiological implications. Fermentation of IF from TM-B resulted in the largest pH decrease after 72h (pH=6.07), with a low short chain fatty acid (SCFA) production (0.75 to 47.23mmol/L), but greater relative concentration of other fatty acids (FA) (C7, C8, C9). Besides, 55 volatile compounds were detected in the fermentation media by SPME-GC-MS and three principal components (PC) were identified. PC1 was influenced by SCFA production, low FA esters production (<8C), and low volatile organic acids production. PC2 was influenced by the decrease in pH and an increase in antioxidant capacity (p<0.0001). These results suggest that the production of different metabolites in the luminal medium may affect the pH and antioxidant status in the colon. Fermentation of IF from TM-M, assessed after 48 and 72h, showed the highest correlation for PC2; the metabolic pattern registered for this IF maybe considered beneficial.
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Affiliation(s)
- Victor Manuel Zamora-Gasga
- Instituto Tecnológico de Tepic, Laboratorio Integral de Investigación en Alimentos, División de Estudios de Posgrado, Av Instituto Tecnológico No 2595, Col Lagos del Country, CP 63175 Tepic, Nayarit, Mexico
| | - Efigenia Montalvo-González
- Instituto Tecnológico de Tepic, Laboratorio Integral de Investigación en Alimentos, División de Estudios de Posgrado, Av Instituto Tecnológico No 2595, Col Lagos del Country, CP 63175 Tepic, Nayarit, Mexico
| | - Guadalupe Loarca-Piña
- Programa de Posgrado en Alimentos del Centro de la República, Facultad de Química, Universidad Autónoma de Querétaro, Centro Universitario, Cerro de las Campanas S/N, CP 76010, Santiago de Querétaro, Querétaro, Mexico
| | - Pedro Alberto Vázquez-Landaverde
- Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada del Instituto Politécnico Nacional, Unidad Querétaro, Cerro Blanco No. 141, Col Colinas del Cimatario, CP 76090, Santiago de Querétaro, Querétaro, Mexico
| | - Juscelino Tovar
- Food for Health Science Centre, Lund University, Medicon Village, Scheelevägen 2, Lund SE-223 81, Sweden
| | - Sonia G Sáyago-Ayerdi
- Instituto Tecnológico de Tepic, Laboratorio Integral de Investigación en Alimentos, División de Estudios de Posgrado, Av Instituto Tecnológico No 2595, Col Lagos del Country, CP 63175 Tepic, Nayarit, Mexico.
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Bhutia YD, Ogura J, Sivaprakasam S, Ganapathy V. Gut Microbiome and Colon Cancer: Role of Bacterial Metabolites and Their Molecular Targets in the Host. CURRENT COLORECTAL CANCER REPORTS 2017; 13:111-118. [PMID: 30337849 DOI: 10.1007/s11888-017-0362-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Purpose of review The relationship between colonic bacteria and the host is symbiotic, but how communication between the two partners occurs is just beginning to be understood at the molecular level. Here, we highlight specific products of bacterial metabolism that are present in the colonic lumen and their molecular targets in the host that facilitate this communication. Recent findings Colonic epithelial cells and mucosal immune cells express several cell-surface receptors and nuclear receptors that are activated by specific bacterial metabolites, which impact multiple signaling pathways and expression of many genes. In addition, some bacterial metabolites also possess the ability to cause epigenetic changes in these cells via inhibition of selective enzymes involved in the maintenance of histone acetylation and DNA methylation patterns. Summary Colonic bacteria communicate with their host with selective metabolites that interact with host molecular targets. This chemical communication underlies a broad range of the biology and function of colonic epithelial cells and mucosal immune cells, which protect against inflammation and carcinogenesis in the colon under normal physiological conditions.
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Affiliation(s)
- Yangzom D Bhutia
- Department of Cell Biology and Biochemistry, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA, Tel.: 806-743-1282
| | - Jiro Ogura
- Department of Cell Biology and Biochemistry, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA, Tel.: 806-743-4101
| | - Sathish Sivaprakasam
- Department of Cell Biology and Biochemistry, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA, Tel.: 806-743-4117
| | - Vadivel Ganapathy
- Department of Cell Biology and Biochemistry, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
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Tsilimigras MCB, Fodor A, Jobin C. Carcinogenesis and therapeutics: the microbiota perspective. Nat Microbiol 2017; 2:17008. [PMID: 28225000 PMCID: PMC6423540 DOI: 10.1038/nmicrobiol.2017.8] [Citation(s) in RCA: 95] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 01/10/2017] [Indexed: 12/18/2022]
Abstract
Cancer arises from the acquisition of multiple genetic and epigenetic changes in host cells over the span of many years, promoting oncogenic traits and carcinogenesis. Most cancers develop following random somatic alterations of key oncogenic genes, which are favoured by a number of risk factors, including lifestyle, diet and inflammation. Importantly, the environment where tumours evolve provides a unique source of signalling cues that affects cancer cell growth, survival, movement and metastasis. Recently, there has been increased interest in how the microbiota, the collection of microorganisms inhabiting the host body surface and cavities, shapes a micro-environment for host cells that can either promote or prevent cancer formation. The microbiota, particularly the intestinal biota, plays a central role in host physiology, and the composition and activity of this consortium of microorganisms is directly influenced by known cancer risk factors such as lifestyle, diet and inflammation. In this REVIEW, we discuss the pro- and anticarcinogenic role of the microbiota, as well as highlighting the therapeutic potential of microorganisms in tumourigenesis. The broad impacts, and, at times, opposing roles of the microbiota in carcinogenesis serve to illustrate the complex and sometimes conflicted relationship between microorganisms and the host-a relationship that could potentially be harnessed for therapeutic benefits.
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Affiliation(s)
- Matthew C. B. Tsilimigras
- Department of Bioinformatics and Genomics, University of North Carolina at Charlotte, Charlotte, North Carolina 28223, USA
| | - Anthony Fodor
- Department of Bioinformatics and Genomics, University of North Carolina at Charlotte, Charlotte, North Carolina 28223, USA
| | - Christian Jobin
- Department of Medicine, University of Florida, Gainesville, Florida 32611, USA
- Department of Infectious Diseases and Pathology, University of Florida, Gainesville, Florida 32611, USA
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Cosola C, De Angelis M, Rocchetti MT, Montemurno E, Maranzano V, Dalfino G, Manno C, Zito A, Gesualdo M, Ciccone MM, Gobbetti M, Gesualdo L. Beta-Glucans Supplementation Associates with Reduction in P-Cresyl Sulfate Levels and Improved Endothelial Vascular Reactivity in Healthy Individuals. PLoS One 2017; 12:e0169635. [PMID: 28107445 PMCID: PMC5249102 DOI: 10.1371/journal.pone.0169635] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Accepted: 12/20/2016] [Indexed: 12/21/2022] Open
Abstract
Background Oat and barley beta-glucans are prebiotic fibers known for their cholesterol-lowering activity, but their action on the human gut microbiota metabolism is still under research. Although the induction of short-chain fatty acids (SCFA) following their ingestion has previously been reported, no study has investigated their effects on proteolytic uremic toxins p-cresyl sulfate (pCS) and indoxyl sulfate (IS) levels, while others have failed to demonstrate an effect on the endothelial function measured through flow-mediated dilation (FMD). Objective The aim of our study was to evaluate whether a nutritional intervention with a functional pasta enriched with beta-glucans could promote a saccharolytic shift on the gut microbial metabolism and improve FMD. Methods We carried out a pilot study on 26 healthy volunteers who underwent a 2-month dietary treatment including a daily administration of Granoro “Cuore Mio” pasta enriched with barley beta-glucans (3g/100g). Blood and urine routine parameters, serum pCS/IS and FMD were evaluated before and after the dietary treatment. Results The nutritional treatment significantly reduced LDL and total cholesterol, as expected. Moreover, following beta-glucans supplementation we observed a reduction of serum pCS levels and an increase of FMD, while IS serum levels remained unchanged. Conclusions We demonstrated that a beta-glucans dietary intervention in healthy volunteers correlates with a saccharolytic shift on the gut microbiota metabolism, as suggested by the decrease of pCS and the increase of SCFA, and associates with an improved endothelial reactivity. Our pilot study suggests, in addition to cholesterol, novel pCS-lowering properties of beta-glucans, worthy to be confirmed in large-scale trials and particularly in contexts where the reduction of the microbial-derived uremic toxin pCS is of critical importance, such as in chronic kidney disease.
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Affiliation(s)
- Carmela Cosola
- Department of Emergency and Organ Transplantation – Nephrology, Dialysis and Transplantation Unit, University of Bari Aldo Moro, Bari, Italy
- * E-mail:
| | - Maria De Angelis
- Department of Soil, Plant and Food Sciences, University of Bari Aldo Moro, Bari, Italy
| | - Maria Teresa Rocchetti
- Department of Emergency and Organ Transplantation – Nephrology, Dialysis and Transplantation Unit, University of Bari Aldo Moro, Bari, Italy
| | - Eustacchio Montemurno
- Department of Emergency and Organ Transplantation – Nephrology, Dialysis and Transplantation Unit, University of Bari Aldo Moro, Bari, Italy
| | - Valentina Maranzano
- Department of Emergency and Organ Transplantation – Nephrology, Dialysis and Transplantation Unit, University of Bari Aldo Moro, Bari, Italy
| | - Giuseppe Dalfino
- Department of Emergency and Organ Transplantation – Nephrology, Dialysis and Transplantation Unit, University of Bari Aldo Moro, Bari, Italy
| | - Carlo Manno
- Department of Emergency and Organ Transplantation – Nephrology, Dialysis and Transplantation Unit, University of Bari Aldo Moro, Bari, Italy
| | - Annapaola Zito
- Department of Emergency and Organ Transplantation - Cardiovascular Disease Unit, University of Bari Aldo Moro, Bari, Italy
| | - Michele Gesualdo
- Department of Emergency and Organ Transplantation - Cardiovascular Disease Unit, University of Bari Aldo Moro, Bari, Italy
| | - Marco Matteo Ciccone
- Department of Emergency and Organ Transplantation - Cardiovascular Disease Unit, University of Bari Aldo Moro, Bari, Italy
| | - Marco Gobbetti
- Faculty of Science and Technology, Free University of Bozen, Bolzano, Italy
| | - Loreto Gesualdo
- Department of Emergency and Organ Transplantation – Nephrology, Dialysis and Transplantation Unit, University of Bari Aldo Moro, Bari, Italy
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Mechanisms responsible for the hypocholesterolaemic effect of regular consumption of probiotics. Nutr Res Rev 2016; 30:36-49. [PMID: 27995830 DOI: 10.1017/s0954422416000226] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
CVD affect a large proportion of the world's population, with dyslipidaemia as the major risk factor. The regular consumption of both probiotic bacteria and yeast has been associated with improvement in the serum lipid profile. Thus, the present review aims to describe and discuss the potential mechanisms responsible for the hypocholesterolaemic effect of regular consumption of probiotic bacteria and yeast. Regarding the hypocholesterolaemic effect of probiotic bacteria, the potential mechanisms responsible include: deconjugation of bile salts; modulation of lipid metabolism; and decreased absorption of intestinal cholesterol through co-precipitation of intestinal cholesterol with the deconjugated bile salts, incorporation and assimilation of cholesterol in the cell membrane of the probiotics, intestinal conversion of cholesterol in coprostanol, and inhibition of the expression of the intestinal cholesterol transporter Niemann-Pick C1 like 1 (NPC1L1) in the enterocytes. The potential mechanisms responsible for the hypocholesterolaemic effect of probiotic yeasts include: deconjugation of bile salts; co-precipitation of intestinal cholesterol with the deconjugated bile salts; incorporation and assimilation of cholesterol in the cell membrane; and inhibition of hepatic cholesterol synthesis. The regular consumption of probiotic bacteria and yeast, as a non-pharmaceutical approach to help manage cardiovascular risk, holds promise, according to the beneficial hypocholesterolaemic effects described herein. However, the hypocholesterolaemic effects vary according to the strains used, the physiological state of the host, and the type of diet to which the probiotics are added. Further studies are necessary to fill the gaps with regard to the knowledge related to this topic.
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Abstract
Colorectal cancer is one of the so-called westernized diseases and the second leading cause of cancer death worldwide. On the basis of global epidemiological and scientific studies, evidence suggests that the risk of colorectal cancer is increased by processed and unprocessed meat consumption but suppressed by fibre, and that food composition affects colonic health and cancer risk via its effects on colonic microbial metabolism. The gut microbiota can ferment complex dietary residues that are resistant to digestion by enteric enzymes. This process provides energy for the microbiota but culminates in the release of short-chain fatty acids including butyrate, which are utilized for the metabolic needs of the colon and the body. Butyrate has a remarkable array of colonic health-promoting and antineoplastic properties: it is the preferred energy source for colonocytes, it maintains mucosal integrity and it suppresses inflammation and carcinogenesis through effects on immunity, gene expression and epigenetic modulation. Protein residues and fat-stimulated bile acids are also metabolized by the microbiota to inflammatory and/or carcinogenic metabolites, which increase the risk of neoplastic progression. This Review will discuss the mechanisms behind these microbial metabolite effects, which could be modified by diet to achieve the objective of preventing colorectal cancer in Western societies.
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47
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Dos Reis SA, da Conceição LL, Siqueira NP, Rosa DD, da Silva LL, Peluzio MDCG. Review of the mechanisms of probiotic actions in the prevention of colorectal cancer. Nutr Res 2016; 37:1-19. [PMID: 28215310 DOI: 10.1016/j.nutres.2016.11.009] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 11/16/2016] [Accepted: 11/18/2016] [Indexed: 12/16/2022]
Abstract
The purpose of this review is to discuss the potential mechanisms of probiotics action in colorectal cancer prevention. In this regard, the composition of the intestinal microbiota is considered as an important risk factor in the development of colorectal cancer, and probiotics are able to positively modulate the composition of this microbiota. Studies have shown that the regular consumption of probiotics could prevent the development of colorectal cancer. In this respect, in vitro and experimental studies suggest some potential mechanisms responsible for this anticarcinogenic action. The mechanisms include modification of the intestinal microbiota composition, changes in metabolic activity of the microbiota, binding and degradation of carcinogenic compounds present in the intestinal lumen, production of compounds with anticarcinogenic activity, immunomodulation, improvement of the intestinal barrier, changes in host physiology, inhibition of cell proliferation, and induction of apoptosis in cancer cells. In contrast, very few reports demonstrate adverse effects of probiotic oral supplementation. In light of the present evidence, more specific studies are needed on probiotic bacteria, especially regarding the identification of the bacterial strains with greater anticarcinogenic potential; the verification of the viability of these strains after passing through the gastrointestinal tract; the investigation of potential adverse effects in immunocompromised individuals; and finally establishing the dosage and frequency of use.
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Affiliation(s)
- Sandra A Dos Reis
- Department of Nutrition and Health, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil.
| | - Lisiane L da Conceição
- Department of Nutrition and Health, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil.
| | - Nathane P Siqueira
- Department of Nutrition and Health, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil.
| | - Damiana D Rosa
- Department of Nutrition and Health, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil.
| | - Letícia L da Silva
- Department of Nutrition and Health, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil.
| | - Maria do Carmo G Peluzio
- Department of Nutrition and Health, Universidade Federal de Viçosa, Viçosa, Minas Gerais, 36570-900, Brazil.
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48
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De Filippis F, Pellegrini N, Vannini L, Jeffery IB, La Storia A, Laghi L, Serrazanetti DI, Di Cagno R, Ferrocino I, Lazzi C, Turroni S, Cocolin L, Brigidi P, Neviani E, Gobbetti M, O'Toole PW, Ercolini D. High-level adherence to a Mediterranean diet beneficially impacts the gut microbiota and associated metabolome. Gut 2016; 65:1812-1821. [PMID: 26416813 DOI: 10.1136/gutjnl-2015-309957] [Citation(s) in RCA: 910] [Impact Index Per Article: 113.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Revised: 07/15/2015] [Accepted: 08/05/2015] [Indexed: 02/06/2023]
Abstract
OBJECTIVES Habitual diet plays a major role in shaping the composition of the gut microbiota, and also determines the repertoire of microbial metabolites that can influence the host. The typical Western diet corresponds to that of an omnivore; however, the Mediterranean diet (MD), common in the Western Mediterranean culture, is to date a nutritionally recommended dietary pattern that includes high-level consumption of cereals, fruit, vegetables and legumes. To investigate the potential benefits of the MD in this cross-sectional survey, we assessed the gut microbiota and metabolome in a cohort of Italian individuals in relation to their habitual diets. DESIGN AND RESULTS We retrieved daily dietary information and assessed gut microbiota and metabolome in 153 individuals habitually following omnivore, vegetarian or vegan diets. The majority of vegan and vegetarian subjects and 30% of omnivore subjects had a high adherence to the MD. We were able to stratify individuals according to both diet type and adherence to the MD on the basis of their dietary patterns and associated microbiota. We detected significant associations between consumption of vegetable-based diets and increased levels of faecal short-chain fatty acids, Prevotella and some fibre-degrading Firmicutes, whose role in human gut warrants further research. Conversely, we detected higher urinary trimethylamine oxide levels in individuals with lower adherence to the MD. CONCLUSIONS High-level consumption of plant foodstuffs consistent with an MD is associated with beneficial microbiome-related metabolomic profiles in subjects ostensibly consuming a Western diet. TRIAL REGISTRATION NUMBER This study was registered at clinical trials.gov as NCT02118857.
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Affiliation(s)
- Francesca De Filippis
- Department of Agricultural Sciences, Division of Microbiology, University of Naples Federico II, Via Università 100, Portici, Italy
| | - Nicoletta Pellegrini
- Department of Food Science, University of Parma, Parco Area delle Scienze 48/A, Parma, Italy
| | - Lucia Vannini
- Department of Agricultural and Food Sciences, Alma Mater Studiorum University of Bologna, viale Fanin 44, Bologna, Italy.,Inter-Departmental Centre for Industrial Agri-Food Research, Alma Mater Studiorum University of Bologna, Piazza Goidanich 60 Cesena, Bologna, Italy
| | - Ian B Jeffery
- Department of Microbiology, University College Cork, Cork, Ireland.,Alimentary Pharmabiotic Centre, University College Cork, Cork, Ireland
| | - Antonietta La Storia
- Department of Agricultural Sciences, Division of Microbiology, University of Naples Federico II, Via Università 100, Portici, Italy
| | - Luca Laghi
- Department of Agricultural and Food Sciences, Alma Mater Studiorum University of Bologna, viale Fanin 44, Bologna, Italy.,Inter-Departmental Centre for Industrial Agri-Food Research, Alma Mater Studiorum University of Bologna, Piazza Goidanich 60 Cesena, Bologna, Italy
| | - Diana I Serrazanetti
- Inter-Departmental Centre for Industrial Agri-Food Research, Alma Mater Studiorum University of Bologna, Piazza Goidanich 60 Cesena, Bologna, Italy
| | - Raffaella Di Cagno
- Department of Soil, Plant and Food Science, University of Bari Aldo Moro, Bari, Italy
| | - Ilario Ferrocino
- Department of Agricultural, Forest and Food Science, University of Turin, Grugliasco, Italy
| | - Camilla Lazzi
- Department of Food Science, University of Parma, Parco Area delle Scienze 48/A, Parma, Italy
| | - Silvia Turroni
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum University of Bologna, Via Belmeloro, Bologna, Italy
| | - Luca Cocolin
- Department of Agricultural, Forest and Food Science, University of Turin, Grugliasco, Italy
| | - Patrizia Brigidi
- Department of Pharmacy and Biotechnology, Alma Mater Studiorum University of Bologna, Via Belmeloro, Bologna, Italy
| | - Erasmo Neviani
- Department of Food Science, University of Parma, Parco Area delle Scienze 48/A, Parma, Italy
| | - Marco Gobbetti
- Department of Soil, Plant and Food Science, University of Bari Aldo Moro, Bari, Italy
| | - Paul W O'Toole
- Department of Microbiology, University College Cork, Cork, Ireland.,Alimentary Pharmabiotic Centre, University College Cork, Cork, Ireland
| | - Danilo Ercolini
- Department of Agricultural Sciences, Division of Microbiology, University of Naples Federico II, Via Università 100, Portici, Italy
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49
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Sheflin AM, Borresen EC, Kirkwood JS, Boot CM, Whitney AK, Lu S, Brown RJ, Broeckling CD, Ryan EP, Weir TL. Dietary supplementation with rice bran or navy bean alters gut bacterial metabolism in colorectal cancer survivors. Mol Nutr Food Res 2016; 61. [PMID: 27461523 DOI: 10.1002/mnfr.201500905] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 06/30/2016] [Accepted: 07/04/2016] [Indexed: 12/17/2022]
Abstract
SCOPE Heat-stabilized rice bran (SRB) and cooked navy bean powder (NBP) contain a variety of phytochemicals that are fermented by colonic microbiota and may influence intestinal health. Dietary interventions with these foods should be explored for modulating colorectal cancer risk. METHODS AND RESULTS A randomized-controlled pilot clinical trial investigated the effects of eating SRB (30 g/day) or cooked navy bean powder (35 g/day) on gut microbiota and metabolites (NCT01929122). Twenty-nine overweight/obese volunteers with a prior history of colorectal cancer consumed a study-provided meal and snack daily for 28 days. Volunteers receiving SRB or NBP showed increased gut bacterial diversity and altered gut microbial composition at 28 days compared to baseline. Supplementation with SRB or NBP increased total dietary fiber intake similarly, yet only rice bran intake led to a decreased Firmicutes:Bacteroidetes ratio and increased SCFA (propionate and acetate) in stool after 14 days but not at 28 days. CONCLUSION These findings support modulation of gut microbiota and fermentation byproducts by SRB and suggest that foods with similar ability to increase dietary fiber intake may not have equal effects on gut microbiota and microbial metabolism.
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Affiliation(s)
- Amy M Sheflin
- Department of Food Science and Human Nutrition, Colorado State University, Fort Collins, CO, USA
| | - Erica C Borresen
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA
| | - Jay S Kirkwood
- Proteomics and Metabolomics Facility, Colorado State University, Fort Collins, CO, USA
| | - Claudia M Boot
- Department of Chemistry, Central Instrument Facility, Colorado State University, Fort Collins, CO, USA
| | - Alyssa K Whitney
- Department of Food Science and Human Nutrition, Colorado State University, Fort Collins, CO, USA
| | - Shen Lu
- Department of Food Science and Human Nutrition, Colorado State University, Fort Collins, CO, USA
| | - Regina J Brown
- Department of Medicine, Division of Medical Oncology, University of Colorado Denver and Lone Tree Oncology affiliation of University of Colorado Cancer Center, Aurora, Colorado, USA
| | - Corey D Broeckling
- Proteomics and Metabolomics Facility, Colorado State University, Fort Collins, CO, USA
| | - Elizabeth P Ryan
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA
| | - Tiffany L Weir
- Department of Food Science and Human Nutrition, Colorado State University, Fort Collins, CO, USA
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50
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Ng O. Iron, microbiota and colorectal cancer. Wien Med Wochenschr 2016; 166:431-436. [PMID: 27577249 DOI: 10.1007/s10354-016-0508-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 07/27/2016] [Indexed: 12/21/2022]
Abstract
Iron deficiency and anaemia are common in colorectal cancer. Replacement with oral or intravenous iron effectively treats this deficiency. However, mechanistic and population studies suggest that excess iron promotes colorectal carcinogenesis. Growing research into gut microbiota and dysbiosis suggests one explanation for this association. Iron is growth limiting for many pathogenic bacteria and may promote a shift in the ratio of pathogenic to protective bacteria. This may increase the toxic bacterial metabolites, promoting inflammation and carcinogenesis. This has important implications as we seek to correct anaemia in our patients.
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Affiliation(s)
- Oliver Ng
- Clinical Research Fellow, Queens Medical Centre, Nottingham Digestive Disease Centre, E Floor West Block, Derby Rd, NG7 2UH, Nottingham, UK.
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