151
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Zaher S. Nutrition and the gut microbiome during critical illness: A new insight of nutritional therapy. Saudi J Gastroenterol 2020; 26:300487. [PMID: 33208559 PMCID: PMC8019138 DOI: 10.4103/sjg.sjg_352_20] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 08/16/2020] [Accepted: 08/16/2020] [Indexed: 12/13/2022] Open
Abstract
Changes in the microbiome in response to environmental influences can affect the overall health. Critical illness is considered one of the major environmental factors that can potentially influence the normal gut homeostasis. It is associated with pathophysiological effects causing damage to the intestinal microbiome. Alteration of intestinal microbial composition during critical illness may subsequently compromise the integrity of the intestinal epithelial barrier and intestinal mucosa absorptive function. Many factors can impact the microbiome of critically ill patients including ischemia, hypoxia and hypotension along with the iatrogenic effects of therapeutic agents and the lack of enteral feeds. Factors related to disease state and medication are inevitable and they are part of the intensive care unit (ICU) exposure. However, a nutritional intervention targeting gut microbiota might have the potential to improve clinical outcomes in the critically ill population given the extensive vascular and lymphatic links between the intestines and other organs. Although nutrition is considered an integral part of the treatment plan of critically ill patients, still the role of nutritional intervention is restricted to improve nitrogen balance. What is dismissed is whether the nutrients we provide are adequate and how they are processed and utilised by the host and the microbiota. Therefore, the goal of nutrition therapy during critical illness should be extended to provide good quality feeds with balanced macronutrient content to feed up the entire body including the microbiota and host cells. The main aim of this review is to examine the current literature on the effect of critical illness on the gut microbiome and to highlight the role of nutrition as a factor affecting the intestinal microbiome-host relationship during critical illness.
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Affiliation(s)
- Sara Zaher
- Department of Clinical Nutrition, Faculty of Applied Medical Sciences, Taibah University, Saudi Arabia
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152
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Neijat M, Habtewold J, Li S, Jing M, House JD. Effect of dietary n-3 polyunsaturated fatty acids on the composition of cecal microbiome of Lohmann hens. Prostaglandins Leukot Essent Fatty Acids 2020; 162:102182. [PMID: 33038831 DOI: 10.1016/j.plefa.2020.102182] [Citation(s) in RCA: 2] [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: 07/31/2020] [Revised: 09/24/2020] [Accepted: 09/24/2020] [Indexed: 12/26/2022]
Abstract
Supplementation of n-3 fatty acids to poultry diets is widely acknowledged for its role in enhancing poultry products, however, little is known about the compositional responses of gut microbial communities to type and dosage of these supplements. Here, we compared the effects of n-3 polyunsaturated fatty acids (PUFA), supplied as alpha-linolenic acid (ALA) or docosahexaenoic acid (DHA), on the composition of bacterial communities in ceca of laying hens. Corn-soybean basal diets were supplemented with either flaxseed oil (FO, ALA-rich) or marine algal biomass (MA, DHA-rich), and each supplied 0.20 and 0.60% of total n-3 PUFA in the diet. Lohmann LSL-Classic laying hens (n = 10/treatment) were randomly allocated to one of the 4 diets. After 8 weeks of feeding, blood, liver and cecal digesta samples were obtained for plasma glucose, fatty acids, and short chain fatty acids analyses, respectively. The gut bacterial communities were characterized using genomic DNA extracted from cecal contents, whereby the V3-V4 hypervariable region of the 16S rRNA gene was sequenced using the Illumina Miseq® platform. Firmicutes and Bacteroidetes were the predominant phyla in both the FO- and MA-fed groups. The relative abundance of Tenericutes, often associated with immunomodulation, was relatively higher (P<0.0001) in the FO than MA group. Although the relative abundance of Bacteroides was greater for the FO- than the MA-fed group, this genus was negatively correlated (P<0.05) with total n-3 PUFA in the liver at higher dosages of both FO- and MA-fed hens. Higher dose of FO (0.60%) and both dosages of MA (0.20 and 0.60%) substantially enriched several members of Firmicutes (e.g., Faecalibacterium, Clostridium and Ruminococcus) which are known to produce butyrate. Moreover, co-occurrence network analysis revealed that, in the FO 0.60- and MA 0.20-fed hens, Ruminococcaceae was the most influential taxon accounting for about 31% of the network complexity. These findings demonstrate that supplementation of different type and level of n-3 PUFA in hens' diets could enrich microbial communities with potential role in lipid metabolism and health.
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Affiliation(s)
- M Neijat
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada
| | - J Habtewold
- Agriculture and Agri-Food Canada (AAFC), Ottawa, Ontario, Canada
| | - S Li
- Department of Animal Sciences, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada
| | - M Jing
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada
| | - J D House
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada; Department of Animal Sciences, University of Manitoba, Winnipeg, Manitoba, R3T 2N2, Canada; Richardson Centre for Functional Foods and Nutraceuticals, University of Manitoba, Winnipeg, Manitoba, R3T 2E1, Canada; Canadian Centre for Agri-Food Research in Health and Medicine, St. Boniface Research Centre, Winnipeg, MB, R2H 2A6, Canada.
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153
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Ratajczak AE, Rychter AM, Zawada A, Dobrowolska A, Krela-Kaźmierczak I. Lactose intolerance in patients with inflammatory bowel diseases and dietary management in prevention of osteoporosis. Nutrition 2020; 82:111043. [PMID: 33316755 DOI: 10.1016/j.nut.2020.111043] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Revised: 08/13/2020] [Accepted: 10/15/2020] [Indexed: 02/06/2023]
Abstract
Lactose intolerance affects 33% to 75% of the world population and may be associated with various genetic factors. Lactose in the diet can be found in milk and dairy products, which simultaneously constitute the primary sources of calcium. Gut microbiota also influences lactose tolerance. Patients with lactose intolerance often stop consuming milk and dairy products, which may lead to calcium and vitamin deficiency and osteoporosis. Insufficient production of lactase also occurs in patients with diseases of the gastrointestinal tract, such as inflammatory bowel diseases. Moreover, Crohn's disease and ulcerative colitis are risk factors for osteoporosis, and the intake of the proper amount of calcium is an essential element in preventing the decrease of bone mineral density. Diet may prevent the development of osteoporosis, thus, educating patients regarding proper diet should constitute a part of the treatment and prevention process. Patients should consume low-lactose, or lactose-free milk and bacterially fermented dairy products. Additionally, plant milk supplemented by calcium and vitamin D, mineral water with calcium, and certain vegetables also may be good sources of calcium.
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Affiliation(s)
- Alicja Ewa Ratajczak
- Department of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, Poland.
| | - Anna Maria Rychter
- Department of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, Poland
| | - Agnieszka Zawada
- Department of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, Poland
| | - Agnieszka Dobrowolska
- Department of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, Poland
| | - Iwona Krela-Kaźmierczak
- Department of Gastroenterology, Dietetics and Internal Diseases, Poznan University of Medical Sciences, Poland
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154
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Ferreira RDS, Mendonça LABM, Ribeiro CFA, Calças NC, Guimarães RDCA, Nascimento VAD, Gielow KDCF, Carvalho CME, Castro APD, Franco OL. Relationship between intestinal microbiota, diet and biological systems: an integrated view. Crit Rev Food Sci Nutr 2020; 62:1166-1186. [PMID: 33115284 DOI: 10.1080/10408398.2020.1836605] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The health-disease process can be influenced by the intestinal microbiota. As this plays a fundamental role in protecting the organism, the importance of studying the composition and diversity of this community becomes increasingly evident. Changes in the composition of the intestinal bacterial community may result in dysbiosis, and this process may contribute to triggering various diseases in all biological systems. This imbalance of intestinal microbiota homeostasis may alter commensal bacteria and the host metabolism, as well as immune function. Dysbiosis also causes an increase in intestinal permeability due to exposure to molecular patterns associated with the pathogen and lipopolysaccharides, leading to a chronic inflammatory process that can result in diseases for all biological systems. In this context, dietary intervention through the use of probiotics, prebiotics and antioxidant foods can be considered a contribution to the modulation of intestinal microbiota. Probiotics have been used to provide up to 10 billion colony forming units, and probiotic foods, Kefir and fermented natural yogurt are also used. Prebiotics, in turn, are found in supplemental formulations of processed foods and in functional foods that are also sources of phenolic compounds, such as flavonoids, antioxidant and anti-inflammatory substances, polyunsaturated fatty acids, vitamins, and minerals. In this review, we will discuss the relationship between an imbalance in the intestinal microbiota with the development of diseases, besides indicating the need for future studies that can establish bacterial parameters for the gastrointestinal tract by modulating the intestinal microbiota, associated with the adoption of healthy habits during all life cycles.
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Affiliation(s)
- Rosângela Dos Santos Ferreira
- S-Inova Biotech, Post Graduate Program in Biotechnology, Catholic University Dom Bosco, Campo Grande, Mato Grosso do Sul, Brazil
| | | | - Camila Fontoura Acosta Ribeiro
- S-Inova Biotech, Post Graduate Program in Biotechnology, Catholic University Dom Bosco, Campo Grande, Mato Grosso do Sul, Brazil
| | - Natali Camposano Calças
- S-Inova Biotech, Post Graduate Program in Biotechnology, Catholic University Dom Bosco, Campo Grande, Mato Grosso do Sul, Brazil
| | - Rita de Cássia Avellaneda Guimarães
- Post Graduate Program in Health and Development in the Central-West Region of Brazil, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
| | - Valter Aragão do Nascimento
- Post Graduate Program in Health and Development in the Central-West Region of Brazil, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
| | - Karine de Cássia Freitas Gielow
- Post Graduate Program in Health and Development in the Central-West Region of Brazil, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul, Brazil
| | | | - Alinne Pereira de Castro
- S-Inova Biotech, Post Graduate Program in Biotechnology, Catholic University Dom Bosco, Campo Grande, Mato Grosso do Sul, Brazil
| | - Octávio Luiz Franco
- S-Inova Biotech, Post Graduate Program in Biotechnology, Catholic University Dom Bosco, Campo Grande, Mato Grosso do Sul, Brazil.,Center of Proteomic and Biochemical Analysis, Post Graduate Program in Genomic Sciences and Biotechnology, Catholic University of Brasilia, Brasilia, Distrito Federal, Brazil
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155
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Su L, Mao C, Wang X, Li L, Tong H, Mao J, Ji D, Lu T, Hao M, Huang Z, Fei C, Zhang K, Yan G. The Anti-colitis Effect of Schisandra chinensis Polysaccharide Is Associated With the Regulation of the Composition and Metabolism of Gut Microbiota. Front Cell Infect Microbiol 2020; 10:519479. [PMID: 33194780 PMCID: PMC7609416 DOI: 10.3389/fcimb.2020.519479] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 08/28/2020] [Indexed: 01/30/2023] Open
Abstract
Background: The pathogenesis of inflammatory bowel disease (IBD) is linked to an intricate association of environmental, microbial, and host-related factors. Polysaccharide affects host immunity by regulating the composition and metabolism of gut microbiota is the common mechanism of disease resistance. However, the efficacy and mechanism of Schisandra chinensis polysaccharide (SCP) in the treatment of inflammatory bowel disease have not been studied. Objective: To explore the effect and mechanism of SCP on dextran sodium sulfate (DSS) - induced ulcerative colitis (UC) in mice. Materials/Methods: In this study, we established a mouse model of UC, and used SCP for treatment intervention. The biochemical indexes related to inflammation were determined by ELISA kit, and the therapeutic effect of SCP on UC was clarified. Then, 16S rDNA sequencing was used to study the effect of SCP on the composition and diversity of gut microbiota. At the same time, GC-MS was used to determine the content of short chain fatty acids in intestinal contents. Finally, the relationship among gut microbiota, short chain fatty acids and inflammatory factors was analyzed, and to comprehensively explain the effect and mechanism of SCP on UC. Results: The results showed that SCP could significantly improve the physiological state of UC mice and regulate the level of inflammatory factors to normal levels. Meanwhile, SCP could significantly regulate the imbalance of gut microbiota and increase the content of SCFAs. In addition, the results of the correlation between gut microbiota and SCFAs showed that butyric acid, isobutyric acid and valeric acid had the highest correlation with gut microbiota. Conclusion: In conclusion, this research showed that SCP can inhibit inflammatory bowel disease by regulating the composition and metabolism of gut microbiota, and indicating that SCP may be used as adjuvant therapy for IBD patients.
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Affiliation(s)
- Lianlin Su
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Chunqin Mao
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Xiachang Wang
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Lin Li
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China.,The Key Laboratory of Chinese Herbal Medicine Processing of Jiangsu Province, Nanjing, China
| | - Huangjin Tong
- Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Province Academy of Traditional Chinese Medicine, Nanjing, China
| | - Jing Mao
- School of Medicine and Life Sciences, Nanjing University of Chinese Medicine, Nanjing, China
| | - De Ji
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Tulin Lu
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China.,The Key Laboratory of Chinese Herbal Medicine Processing of Jiangsu Province, Nanjing, China
| | - Min Hao
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Ziyan Huang
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Chenghao Fei
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Kewei Zhang
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
| | - Guojun Yan
- College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China
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156
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Lavefve L, Howard LR, Carbonero F. Berry polyphenols metabolism and impact on human gut microbiota and health. Food Funct 2020; 11:45-65. [PMID: 31808762 DOI: 10.1039/c9fo01634a] [Citation(s) in RCA: 126] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Berries are rich in phenolic compounds such as phenolic acids, flavonols and anthocyanins. These molecules are often reported as being responsible for the health effects attributed to berries. However, their poor bioavailability, mostly influenced by their complex chemical structures, raises the question of their actual direct impact on health. The products of their metabolization, however, may be the most bioactive compounds due to their ability to enter the blood circulation and reach the organs. The main site of metabolization of the complex polyphenols to smaller phenolic compounds is the gut through the action of microorganisms, and reciprocally polyphenols and their metabolites can also modulate the microbial populations. In healthy subjects, these modulations generally lead to an increase in Bifidobacterium, Lactobacillus and Akkermansia, therefore suggesting a prebiotic-like effect of the berries or their compounds. Finally, berries have been demonstrated to alleviate symptoms of gut inflammation through the modulation of pro-inflammatory cytokines and have chemopreventive effects towards colon cancer through the regulation of apoptosis, cell proliferation and angiogenesis. This review recapitulates the knowledge available on the interactions between berries polyphenols, gut microbiota and gut health and identifies knowledge gaps for future research.
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Affiliation(s)
- Laura Lavefve
- Department of Food Science, University of Arkansas, USA
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157
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Eisenhofer R, Kanzawa-Kiriyama H, Shinoda KI, Weyrich LS. Investigating the demographic history of Japan using ancient oral microbiota. Philos Trans R Soc Lond B Biol Sci 2020; 375:20190578. [PMID: 33012223 PMCID: PMC7702792 DOI: 10.1098/rstb.2019.0578] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
While microbial communities in the human body (microbiota) are now commonly associated with health and disease in industrialised populations, we know very little about how these communities co-evolved and changed with humans throughout history and deep prehistory. We can now examine these communities by sequencing ancient DNA preserved within calcified dental plaque (calculus), providing insights into the origins of disease and their links to human history. Here, we examine ancient DNA preserved within dental calculus samples and their associations with two major cultural periods in Japan: the Jomon period hunter–gatherers approximately 3000 years before present (BP) and the Edo period agriculturalists 400–150 BP. We investigate how human oral microbiomes have changed in Japan through time and explore the presence of microorganisms associated with oral diseases (e.g. periodontal disease, dental caries) in ancient Japanese populations. Finally, we explore oral microbial strain diversity and its potential links to ancient demography in ancient Japan by performing phylogenomic analysis of a widely conserved oral species—Anaerolineaceae oral taxon 439. This research represents, to our knowledge, the first study of ancient oral microbiomes from Japan and demonstrates that the analysis of ancient dental calculus can provide key information about the origin of non-infectious disease and its deep roots with human demography. This article is part of the theme issue ‘Insights into health and disease from ancient biomolecules’.
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Affiliation(s)
- Raphael Eisenhofer
- Australian Centre for Ancient DNA, University of Adelaide, Adelaide, Australia
| | | | - Ken-Ichi Shinoda
- Department of Anthropology, National Museum of Nature and Science, Tsukuba, Japan
| | - Laura S Weyrich
- Australian Centre for Ancient DNA, University of Adelaide, Adelaide, Australia.,Department of Anthropology and the Huck Institutes of Life Sciences, The Pennsylvania State University, University Park, PA, USA
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158
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Wu MC, Jan MS, Chiou JY, Wang YH, Wei JCC. Constipation might be associated with risk of allergic rhinitis: A nationwide population-based cohort study. PLoS One 2020; 15:e0239723. [PMID: 33006996 PMCID: PMC7531808 DOI: 10.1371/journal.pone.0239723] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Accepted: 09/11/2020] [Indexed: 12/12/2022] Open
Abstract
Background Allergic rhinitis (AR) is a burdensome respiratory disorder whose etiology and pathophysiology remain controversial and most likely multifactorial. Accumulated evidence indicates that gut dysbiosis contributes to AR via the gut-airway axis. Constipation could result in alteration of the intestinal microflora. The clinical impact of constipation on AR has not been studied. We aimed to evaluate the risk of AR in constipated patients using a nationwide longitudinal population-based cohort. Methods We identified 57786 patients with constipation and 57786 matched controls between 1999 and 2013 from the Longitudinal Health Insurance Database, which is a subset of Taiwanese National Health Insurance Research Database. Propensity score analysis was used for matching age, sex, comorbidities, and medications at a ratio of 1:1. Multiple Cox regression and subgroup analyses were used to estimate the adjusted hazard ratio of AR. Results The incidence of AR was 32.2 per 1,000 person-years in constipated patients, which was twice that of non-constipated patients. After adjustment for patients’ age, gender, comorbidities, and medications, patients with constipation had a 2.3-fold risk of AR compared to those without constipation (adjusted hazard ratio [aHR]: 2.30; 95% CI, 2.23–2.37). In subgroup analyses, patients aged 20–39 years had a 2.24-fold higher risk of AR in the constipation cohort (aHR; 95% CI, 2.12–2.36). Patients aged <20, 40–64, and ≥65 years had a 2.09, 2.05, and 2.07-fold risk of AR in the constipation cohort, respectively (aHR; 95% CI, 1.98–2.20, 1.94–2.18, and 1.92–2.23). Also, patients with constipation had a higher likelihood of AR, regardless of sex, and with or without comorbidities including hyperlipidemia, hypertension, chronic kidney disease, chronic liver disease, diabetes, chronic obstructive pulmonary disease, rheumatoid arthritis, dyspepsia, irritable bowel syndrome, and anxiety. Conclusion Constipation might be associated with an increased risk of incidental AR. It seems that physicians should keep a higher index of suspicion for AR in people with constipation. The patency issue of gut could not be ignored in patients with AR.
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Affiliation(s)
- Meng-Che Wu
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Division of Gastroenterology, Children’s Medical Center, Taichung Veterans General Hospital, Taichung, Taiwan
| | - Ming-Shiou Jan
- Institute of Biochemistry, Microbiology and Immunology, Chung Shan Medical University, Taichung, Taiwan
- Immunology Research Center, Chung Shan Medical University, Taichung, Taiwan
- Division of Allergy, Immunology and Rheumatology, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Jeng-Yuan Chiou
- School of Health Policy and Management, Chung Shan Medical University, Taichung, Taiwan
| | - Yu-Hsun Wang
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - James Cheng-Chung Wei
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Division of Allergy, Immunology and Rheumatology, Chung Shan Medical University Hospital, Taichung, Taiwan
- Graduate Institute of Integrated Medicine, China Medical University, Taichung, Taiwan
- * E-mail:
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159
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Su C, Fan D, Pan L, Lu Y, Wang Y, Zhang M. Effects of Yu-Ping-Feng polysaccharides (YPS) on the immune response, intestinal microbiota, disease resistance and growth performance of Litopenaeus vannamei. FISH & SHELLFISH IMMUNOLOGY 2020; 105:104-116. [PMID: 32629103 PMCID: PMC7333637 DOI: 10.1016/j.fsi.2020.07.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 06/28/2020] [Accepted: 07/01/2020] [Indexed: 05/02/2023]
Abstract
A 28-day feeding trial was conducted to investigate the effects of Yu-Ping-Feng polysaccharides (YPS) containing Astragalus polysaccharides (APS), Atractylodes macrocephala polysaccharides (AMP) and Saposhnikoviae polysaccharides (SPS) on the immune response, intestinal microbiota, disease resistance and growth performance of Litopenaeus vannamei. Seven hundred and twenty shrimp (3.04 ± 0.33 g) were fed the following diets: Control, YPS1 (0.13% APS + 0.0325% AMP + 0.0325% SPS), YPS2 (0.13% APS + 0.0325% AMP + 0.065% SPS) and YPS3 (0.13% APS + 0.0325% AMP+0.0975% SPS). After 14 and 28 days of feeding, the immune responses of hemocytes and intestine were measured. Intestinal microbiota and growth performance were measured after 28 days of feeding, after that, a 7-day challenge test against Vibrio harveyi was conducted. A significant (P < 0.05) increase of the total haemocyte count (THC), phagocytic activity, antibacterial activity and phenoloxidase (PO) activity was observed in shrimp fed YPS diets compared to the control. Also, dietary YPS supplementation particularly YPS3 group significantly increased the expressions of immune-related genes in the hemocytes and intestine. Regarding the intestinal microbiota, the microbial diversity and richness decreased and functional genes associated with short-chain fatty acids metabolism increased in YPS groups. After Vibrio harveyi challenge, the cumulative mortality in YPS groups was significantly lower than that of the control. Besides, dietary YPS had no significant effect on growth performance of shrimp (P > 0.05). The present results suggested that YPS could be considered as potential prebiotics for aquaculture farmed shrimp.
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Affiliation(s)
- Chen Su
- The Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, Shandong, 266003, China
| | - Depeng Fan
- Bio-Form Biotechnology (Guangdong) Co., LTD, Foshan, Guangdong, 528200, China
| | - Luqing Pan
- The Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, Shandong, 266003, China.
| | - Yusong Lu
- The Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, Shandong, 266003, China
| | - Yuxuan Wang
- The Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, Shandong, 266003, China
| | - Mengyu Zhang
- The Key Laboratory of Mariculture, Ocean University of China, Ministry of Education, Qingdao, Shandong, 266003, China
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160
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Dinçoğlu AH, Rugji J. Use of rose oil in probiotic fermented whey as a functional food. Journal of Food Science and Technology 2020; 58:2705-2713. [PMID: 34194106 DOI: 10.1007/s13197-020-04778-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 08/13/2020] [Accepted: 09/09/2020] [Indexed: 11/29/2022]
Abstract
Medicinal use of phytochemicals dates back to ancient times. Following that, in the 1980s those phytochemicals because of their chemical composition were used to produce new functional foods with added health benefits. Based on their positive effects, nowdays phytochemicals are integrated into the composition of various food products such as whey. This study aimed to develop a functional beverage using probiotics, inulin and rose oil (0.5%, 1% and 2%) and to reveal their effects on some quality properties of the product during 28 days of storage. Lactobacillus acidophilus simultaneously with Bifidobacterium animalis were inoculated into reconstituted whey and inulin was added to enhance their growth and survival in the gastrointestinal tract. Beverage containing 0.5% rose oil (group D) was the most preferred and at the 28th day of storage contained 8.70 log10 cfu/ml, which is essential for a product to have probiotic properties. Microbiological evaluations including rose oil sample showed the absence of coliform in all the samples, while total mesophilic aerobic, yeast and mould counts showed no significant differences related to rose oil during storage period. Groups C, D, E and F had low pH values while group E exhibited the highest acidity level with its highest value (1.6% LA) at the 21st day. For the most part of storage period, group C had the highest levels of total solids while groups D, E and F had higher amounts of protein. Through storage duration, in all groups (except group B) the levels of ash, total solids and protein decreased.
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Affiliation(s)
- Ahmet Hulusi Dinçoğlu
- Department of Nutrition and Dietetics, Faculty of Health Sciences, Burdur Mehmet Akif Ersoy University, 15100 Burdur, Turkey
| | - Jerina Rugji
- Department of Food Hygiene and Technology, Institute of Health Sciences, Burdur Mehmet Akif Ersoy University, 15100 Burdur, Turkey
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161
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Type 2 Diabetes Mellitus Associated with Obesity (Diabesity). The Central Role of Gut Microbiota and Its Translational Applications. Nutrients 2020; 12:nu12092749. [PMID: 32917030 PMCID: PMC7551493 DOI: 10.3390/nu12092749] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 08/31/2020] [Accepted: 09/04/2020] [Indexed: 02/07/2023] Open
Abstract
Obesity is a condition of rising prevalence worldwide, with important socioeconomic implications, being considered as a growing public health concern. Frequently, obesity brings other complications in addition to itself—like Type 2 Diabetes Mellitus (T2DM)—sharing origin, risk factors and pathophysiological mechanisms. In this context, some authors have decided to include both conditions as a unique entity known as “diabesity”. In fact, understanding diabesity as a single disease is possible to maximise the benefits from therapies received in these patients. Gut microbiota plays a key role in individual’s health, and their alterations, either in its composition or derived products are related to a wide range of metabolic disorders like T2DM and obesity. The present work aims to collect the different changes reported in gut microbiota in patients with T2DM associated with obesity and their possible role in the onset, development, and establishment of the disease. Moreover, current research lines to modulate gut microbiota and the potential clinical translation derived from the knowledge of this system will also be reviewed, which may provide support for a better clinical management of such a complex condition.
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162
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Bai J, Bruner DW, Fedirko V, Beitler JJ, Zhou C, Gu J, Zhao H, Lin IH, Chico CE, Higgins KA, Shin DM, Saba NF, Miller AH, Xiao C. Gut Microbiome Associated with the Psychoneurological Symptom Cluster in Patients with Head and Neck Cancers. Cancers (Basel) 2020; 12:cancers12092531. [PMID: 32899975 PMCID: PMC7563252 DOI: 10.3390/cancers12092531] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 08/24/2020] [Accepted: 09/04/2020] [Indexed: 01/04/2023] Open
Abstract
Cancer patients experience a cluster of co-occurring psychoneurological symptoms (PNS) related to cancer treatments. The gut microbiome may affect severity of the PNS via neural, immune, and endocrine signaling pathways. However, the link between the gut microbiome and PNS has not been well investigated in cancer patients, including those with head and neck cancers (HNCs). This pilot study enrolled 13 patients with HNCs, who reported PNS using the Patient-Reported Outcomes version of the Common Terminology Criteria for Adverse Events (CTCAEs). Stool specimens were collected to analyze patients' gut microbiome. All data were collected pre- and post-radiation therapy (RT). Associations between the bacterial abundances and the PNS clusters were analyzed using the linear discriminant analysis effect size; functional pathway analyses of 16S rRNA V3-V4 bacterial communities were conducted using Tax4fun. The high PNS cluster had a greater decrease in microbial evenness than the low PNS cluster from pre- to post-RT. The high and low PNS clusters showed significant differences using weighted UniFrac distance. Those individuals with the high PNS cluster were more likely to have higher abundances in phylum Bacteroidetes, order Bacteroidales, class Bacteroidia, and four genera (Ruminiclostridium9, Tyzzerella, Eubacterium_fissicatena, and DTU089), while the low PNS cluster had higher abundances in family Acidaminococcaceae and three genera (Lactococcus, Phascolarctobacterium, and Desulfovibrio). Both glycan metabolism (Lipopolysaccharide biosynthesis) and vitamin metabolism (folate biosynthesis and lipoic acid metabolism) were significantly different between the high and low PNS clusters pre- and post-RT. Our preliminary data suggest that the diversity and abundance of the gut microbiome play a potential role in developing PNS among cancer patients.
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Affiliation(s)
- Jinbing Bai
- Nell Hodgson Woodruff School of Nursing, Emory University, Atlanta, GA 30322, USA;
- Correspondence: ; Tel.: +1-404-727-2466
| | | | - Veronika Fedirko
- Rollins School of Public Health, Winship Cancer Institute, Emory University, Atlanta, GA 30322, USA;
| | - Jonathan J. Beitler
- Department of Radiation Oncology, School of Medicine, Emory University, Atlanta, GA 30322, USA; (J.J.B.); (K.A.H.)
| | - Chao Zhou
- Department Biostatistics, Yale School of Public Health, Yale University, New Haven, CT 06520, USA; (C.Z.); (J.G.); (H.Z.)
| | - Jianlei Gu
- Department Biostatistics, Yale School of Public Health, Yale University, New Haven, CT 06520, USA; (C.Z.); (J.G.); (H.Z.)
| | - Hongyu Zhao
- Department Biostatistics, Yale School of Public Health, Yale University, New Haven, CT 06520, USA; (C.Z.); (J.G.); (H.Z.)
| | - I-Hsin Lin
- Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, NY 10017, USA;
| | - Cynthia E. Chico
- Department of Psychiatry and Behavioral Sciences, School of Medicine, Emory University, Atlanta, GA 30322, USA; (C.E.C.); (A.H.M.)
| | - Kristin A. Higgins
- Department of Radiation Oncology, School of Medicine, Emory University, Atlanta, GA 30322, USA; (J.J.B.); (K.A.H.)
| | - Dong M. Shin
- Department of Hematology and Medical Oncology, School of Medicine, Emory University, Atlanta, GA 30322, USA; (D.M.S.); (N.F.S.)
| | - Nabil F. Saba
- Department of Hematology and Medical Oncology, School of Medicine, Emory University, Atlanta, GA 30322, USA; (D.M.S.); (N.F.S.)
| | - Andrew H. Miller
- Department of Psychiatry and Behavioral Sciences, School of Medicine, Emory University, Atlanta, GA 30322, USA; (C.E.C.); (A.H.M.)
| | - Canhua Xiao
- School of Nursing, Yale University, New Haven, CT 06477, USA;
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163
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Obesity Measures and Dietary Parameters as Predictors of Gut Microbiota Phyla in Healthy Individuals. Nutrients 2020; 12:nu12092695. [PMID: 32899326 PMCID: PMC7551767 DOI: 10.3390/nu12092695] [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] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 08/27/2020] [Accepted: 09/01/2020] [Indexed: 12/13/2022] Open
Abstract
The dynamics and diversity of human gut microbiota that can remarkably influence the wellbeing and health of the host are constantly changing through the host’s lifetime in response to various factors. The aim of the present study was to determine a set of parameters that could have a major impact on classifying subjects into a single cluster regarding gut bacteria composition. Therefore, a set of demographical, environmental, and clinical data of healthy adults aged 25–50 years (117 female and 83 men) was collected. Fecal microbiota composition was characterized using Illumina MiSeq 16S rRNA gene amplicon sequencing. Hierarchical clustering was performed to analyze the microbiota data set, and a supervised machine learning model (SVM; Support Vector Machines) was applied for classification. Seventy variables from collected data were included in machine learning analysis. The agglomerative clustering algorithm suggested the presence of four distinct community types of most abundant bacterial phyla. Each cluster harbored a statistically significant different proportion of bacterial phyla. Regarding prediction, the most important features classifying subjects into clusters were measures of obesity (waist to hip ratio, BMI, and visceral fat index), total body water, blood pressure, energy intake, total fat, olive oil intake, total fiber intake, and water intake. In conclusion, the SVM model was shown as a valuable tool to classify healthy individuals based on their gut microbiota composition.
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164
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Cao X, Han Y, Gu M, Du H, Song M, Zhu X, Ma G, Pan C, Wang W, Zhao E, Goulette T, Yuan B, Zhang G, Xiao H. Foodborne Titanium Dioxide Nanoparticles Induce Stronger Adverse Effects in Obese Mice than Non-Obese Mice: Gut Microbiota Dysbiosis, Colonic Inflammation, and Proteome Alterations. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2001858. [PMID: 32519440 DOI: 10.1002/smll.202001858] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 04/29/2020] [Accepted: 04/30/2020] [Indexed: 05/23/2023]
Abstract
The recent ban of titanium dioxide (TiO2 ) as a food additive (E171) in France intensified the controversy on safety of foodborne-TiO2 nanoparticles (NPs). This study determines the biological effects of TiO2 NPs and TiO2 (E171) in obese and non-obese mice. Oral consumption (0.1 wt% in diet for 8 weeks) of TiO2 (E171, 112 nm) and TiO2 NPs (33 nm) does not cause severe toxicity in mice, but significantly alters composition of gut microbiota, for example, increased abundance of Firmicutes phylum and decreased abundance of Bacteroidetes phylum and Bifidobacterium and Lactobacillus genera, which are accompanied by decreased cecal levels of short-chain fatty acids. Both TiO2 (E171) and TiO2 NPs increase abundance of pro-inflammatory immune cells and cytokines in the colonic mucosa, indicating an inflammatory state. Importantly, TiO2 NPs cause stronger colonic inflammation than TiO2 (E171), and obese mice are more susceptible to the effects. A microbiota transplant study demonstrates that altered fecal microbiota by TiO2 NPs directly mediate inflammatory responses in the mouse colon. Furthermore, proteomic analysis shows that TiO2 NPs cause more alterations in multiple pathways in the liver and colon of obese mice than non-obese mice. This study provides important information on the health effects of foodborne inorganic nanoparticles.
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Affiliation(s)
- Xiaoqiong Cao
- Department of Food Science, University of Massachusetts, Amherst, MA, 01003, USA
| | - Yanhui Han
- Department of Food Science, University of Massachusetts, Amherst, MA, 01003, USA
| | - Min Gu
- Department of Food Science, University of Massachusetts, Amherst, MA, 01003, USA
| | - Hengjun Du
- Department of Food Science, University of Massachusetts, Amherst, MA, 01003, USA
| | - Mingyue Song
- Department of Food Science, University of Massachusetts, Amherst, MA, 01003, USA
| | - Xiaoai Zhu
- Department of Food Science, University of Massachusetts, Amherst, MA, 01003, USA
- School of Food Science and Technology, Henan University of Technology, Zhengzhou, Henan, 450001, P. R. China
| | - Gaoxing Ma
- Department of Food Science, University of Massachusetts, Amherst, MA, 01003, USA
- College of Food Science and Engineering, Nanjing University of Finance and Economics, Collaborative Innovation Center for Modern Grain Circulation and Safety, Nanjing, 210023, P. R. China
| | - Che Pan
- Department of Food Science, University of Massachusetts, Amherst, MA, 01003, USA
| | - Weicang Wang
- Department of Food Science, University of Massachusetts, Amherst, MA, 01003, USA
| | - Ermin Zhao
- Department of Food Science, University of Massachusetts, Amherst, MA, 01003, USA
| | - Timothy Goulette
- Department of Food Science, University of Massachusetts, Amherst, MA, 01003, USA
| | - Biao Yuan
- Department of Food Science, University of Massachusetts, Amherst, MA, 01003, USA
- Department of Food Quality and Safety/National R&D Center for Chinese Herbal Medicine Processing, College of Engineering, China Pharmaceutical University, Nanjing, Jiangsu, 211198, P. R. China
| | - Guodong Zhang
- Department of Food Science, University of Massachusetts, Amherst, MA, 01003, USA
| | - Hang Xiao
- Department of Food Science, University of Massachusetts, Amherst, MA, 01003, USA
- Department of Microbiology, University of Massachusetts, Amherst, MA, 01003, USA
- Institute for Applied Life Sciences, University of Massachusetts, Amherst, MA, 01003, USA
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165
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Diet type influences the gut microbiome and nutrient assimilation of Genetically Improved Farmed Tilapia (Oreochromis niloticus). PLoS One 2020; 15:e0237775. [PMID: 32813739 PMCID: PMC7446784 DOI: 10.1371/journal.pone.0237775] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 08/03/2020] [Indexed: 12/21/2022] Open
Abstract
Nile tilapia, Oreochromis niloticus is the third most commonly farmed finfish species in the world, accounting for nearly 5% of global aquaculture production. In the past few decades much of the success of this species has been attributed to the development and distribution of Genetically Improved Farmed Tilapia (GIFT). Despite the increasing availability of GIFT, the productivity of small-scale farming remains highly variable, particularly in developing nations. Commercial fish-feed pellets can increase fish farm productivity; however, many small-scale farmers rely on other means of feeding fish due to the high cost and limited availability of commercial fish feed pellets. Therefore, understanding how locally-sourced feeds affect the production of GIFT is an important step towards improving feeding practices, particularly for farmers with low financial capital. This study used stable isotope analysis (SIA) and 16S rRNA gene sequencing to compare the effects of a locally-sourced vegetable-based diet and commercial pellet-based diets on the relative condition, nutrient assimilation patterns and gastrointestinal microbiota of GIFT. GIFT fed a locally-sourced diet were smaller, and in a significantly poorer condition than those fed with commercial fish feeds. SIA showed no differences in dietary carbon between the two diets; however, δ13C, poor fish condition and the abundance of specific bacterial taxa (of such as Fusobacteria) were correlated. SIA revealed that GIFT fed locally-sourced diets that predominantly consisted of vegetables were significantly enriched in δ15N despite a perceived lack of dietary protein. This enrichment suggests that GIFT fed a locally-sourced diet may be supplementing their diet via cannibalism, a behaviour representative of poor farming practice. Overall this study highlights the need to increase the availability of suitable GIFT feeds in developing nations. The development a low-cost feed alternative could improve the success of small-scale GIFT farmers in PNG, increasing both food and income security within the region.
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166
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Liu Y, Brown PN, Ragone D, Gibson DL, Murch SJ. Breadfruit flour is a healthy option for modern foods and food security. PLoS One 2020; 15:e0236300. [PMID: 32702056 PMCID: PMC7377419 DOI: 10.1371/journal.pone.0236300] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 07/01/2020] [Indexed: 11/18/2022] Open
Abstract
Breadfruit is a traditional staple crop from Pacific islands with the potential to improve worldwide food security and mitigate diabetes. Flour produced from breadfruit is a gluten-free, low glycemic index, nutrient dense and complete protein option for modern foods but basic scientific knowledge of health impacts of a breadfruit-based diet in animals and humans was lacking. We designed a series of studies to provide basic and fundamental data on impacts of a breadfruit-based diet through an in vitro and in vivo model. Cooked breadfruit flour was digested through a multi-stage enzyme digestion model to estimate protein digestibility in comparison to wheat flour. Breadfruit protein was found to be easier to digest than wheat protein in the enzyme digestion model. The flour digestions were applied to Caco-2 cells to test the cytotoxicity and to measure the immunogenicity through cytokine expression. No significant differences were observed for immune factors and cytokines (IL-4, IL-10, IL-8, TNF-α, IFN-γ) on Caco-2 cells between the breadfruit and wheat groups. A breadfruit-based rodent chow was formulated by substitution of all of the wheat in the standard formulation with breadfruit. The diets were isocaloric, nutrient equivalent and used to feed male and female C57BL/6 mice for 21 days. No sign of malnutrition, discomfort, illness or death was observed among the mice because of the diet. The histology and the cytokine expression of the mice ileum from both groups were analyzed and showed similar results. The expression of major bacteria was measured in the colon and showed similar results. Mice fed the breadfruit diet had a significantly higher growth rate and body weight than standard diet fed mice. No negative health outcomes were observed in studies with in vitro or in vivo models and breadfruit flour is a healthy alternative to other starches for modern foods.
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Affiliation(s)
- Ying Liu
- Chemistry, University of British Columbia, Kelowna, British Columbia, Canada
- Natural Health and Food Products Research Group, British Columbia Institute of Technology, Burnaby, British Columbia, Canada
| | - Paula N. Brown
- Natural Health and Food Products Research Group, British Columbia Institute of Technology, Burnaby, British Columbia, Canada
| | - Diane Ragone
- Breadfruit Institute, National Tropical Botanical Garden, Kauai, Hawaii, United States of America
| | - Deanna L. Gibson
- Biology, University of British Columbia, Kelowna, British Columbia, Canada
| | - Susan J. Murch
- Chemistry, University of British Columbia, Kelowna, British Columbia, Canada
- * E-mail:
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167
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Ferreira JA, Fuentes S. Some comments on certain statistical aspects of the study of the microbiome. Brief Bioinform 2020; 21:1487-1494. [PMID: 31298267 DOI: 10.1093/bib/bbz077] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 04/12/2019] [Accepted: 06/04/2019] [Indexed: 11/13/2022] Open
Abstract
This note complements and clarifies part of the work of Hawinkel et al. recently published in the journal and suggests some more or less standard tools and methods for carrying out association studies of the microbiome.
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Affiliation(s)
- José A Ferreira
- Department of Statistics and Informatics, RIVM. National Institute for Public Health and the Environment (RIVM). Antonie van Leeuwenhoeklaan 9 3721 MA Bilthoven The Netherlands
| | - Susana Fuentes
- Centre for Infectious Disease Control, RIVM. National Institute for Public Health and the Environment (RIVM). Antonie van Leeuwenhoeklaan 9 3721 MA Bilthoven The Netherlands
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168
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Calcaterra V, Regalbuto C, Manuelli M, Klersy C, Pelizzo G, Albertini R, Vinci F, Larizza D, Leonard MM, Cena H. Screening for celiac disease among children with overweight and obesity: toward exploring celiac iceberg. J Pediatr Endocrinol Metab 2020; 33:/j/jpem.ahead-of-print/jpem-2020-0076/jpem-2020-0076.xml. [PMID: 32653877 DOI: 10.1515/jpem-2020-0076] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 04/20/2020] [Indexed: 12/31/2022]
Abstract
Background The coexistence of celiac disease (CD) and obesity/overweight is not unusual. Objective We investigate the prevalence and clinical presentation of CD, detected by screening, among children with excessive weight gain. Methods We enrolled 200 children referred for overweight/obesity to our outpatient clinic. Medical history during pregnancy and childhood and lifestyle variables were recorded. Patients were screened for CD with total immunoglobulin A (IgA), IgA anti-transglutaminase (tTG-IgA) and IgA anti-endomysial antibodies (EMA-IgA). In subjects with positive autoantibodies, esophagogastroduodenoscopy (EGDS) was performed and genetic testing for HLA DQ2 and/or DQ8 haplotypes was tested. Results CD positive antibodies (tTg-IgA and EMA-IgA) were detected in eight patients (4%); in all subjects CD diagnosis was confirmed by HLA-DQ2 and/or DQ8 compatibility and EGDS. No association between CD and medical history during pregnancy and childhood or lifestyle variables was noted; however, a dietary difference was identified with those testing positive for CD also reporting a lower weekly consumption of fruits and vegetables (p=0.04). Headache was reported more frequently in patients with than without CD (p=0.04). Familiar positivity for autoimmune diseases was revealed in CD patients (p=0.01). Conclusion CD should be considered in children with excessive weight gain. Familial predisposition to other autoimmune diseases may represent a risk factor for development of CD. Even though the relationship between headache and CD is not well defined, the patients with headache of unknown origin should be screened for CD.
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Affiliation(s)
- Valeria Calcaterra
- Pediatric and Adolescent Unit, Department of Internal Medicine, University of Pavia, Pavia, Italy
- Pediatric Surgery Unit, Children's Hospital "Vittore Buzzi", Milano, Italy
| | - Corrado Regalbuto
- Pediatric and Adolescent Unit, Department of Internal Medicine, University of Pavia, Pavia, Italy
- Pediatric Endocrinologic Unit, Department of Maternal and Children's Health, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Matteo Manuelli
- Laboratory of Dietetics and Clinical Nutrition, Department of Public Health, Experimental and Forensic Medicine, University of Pavia, Pavia, Italy
| | - Catherine Klersy
- Biometry & Clinical Epidemiology, Scientific Direction, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Gloria Pelizzo
- Pediatric Surgery Unit, Children's Hospital "Vittore Buzzi", Milano, Italy
- Department of Biomedical and Clinical Science "L. Sacco", University of Milano, Milano, Italy
| | - Riccardo Albertini
- Laboratory of Clinical Chemistry, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Federica Vinci
- Pediatric and Adolescent Unit, Department of Internal Medicine, University of Pavia, Pavia, Italy
- Pediatric Endocrinologic Unit, Department of Maternal and Children's Health, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Daniela Larizza
- Pediatric and Adolescent Unit, Department of Internal Medicine, University of Pavia, Pavia, Italy
- Pediatric Endocrinologic Unit, Department of Maternal and Children's Health, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Maureen M Leonard
- Center for Celiac Research and Treatment, Mass General Hospital for Children, Boston, Massachusetts, USA
- Division of Pediatric Gastroenterology and Nutrition, Mass General Hospital for Children, Harvard Medical School, Boston, MA, USA
| | - Hellas Cena
- Laboratory of Dietetics and Clinical Nutrition, Department of Public Health, Experimental and Forensic Medicine, University of Pavia, Pavia, Italy
- Clinical Nutrition and Dietetics Service, Unit of Internal Medicine and Endocrinology, ICS Maugeri IRCCS, Pavia, Italy
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169
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Hyder A. RETRACTED: Dietary oligosaccharides attenuate DSS-induced colitis in mice, induce PGlyRP3 expression, and inhibit NF-κB and MEK/ERK signaling. Cell Immunol 2020; 354:104144. [PMID: 32619849 DOI: 10.1016/j.cellimm.2020.104144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 05/25/2020] [Accepted: 06/09/2020] [Indexed: 11/19/2022]
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal).
This article has been retracted at the request of the Editors.
The Editors of Cellular Immunology have been informed by Elsevier that the article had been submitted to another journal while under consideration at "Cellular Immunology", which is a case of double submission.
Based on the above infringement and its deleterious impact on the mutual trust necessary for the evaluation of scientific work - the corresponding authors had stated that the article was not submitted to another journal - it was decided to retract this article.
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Affiliation(s)
- Ayman Hyder
- Faculty of Science, Damietta University, New Damietta34517, Egypt.
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170
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Wang Q, Yu C, Yue C, Liu X. Fusobacterium nucleatum produces cancer stem cell characteristics via EMT-resembling variations. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2020; 13:1819-1828. [PMID: 32782710 PMCID: PMC7414483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 04/28/2020] [Indexed: 06/11/2023]
Abstract
OBJECTIVE To explore the involvement of epithelial-mesenchymal transition (EMT) and cancer stem cell (CSC) characteristics induced by Fusobacterium nucleatum (Fn) in colorectal cancer (CRC) in vitro. METHODS SW480 and HCT116 cells were co-cultivated with Fn. Western blot (WB) and real-time PCR were used for detecting EMT markers' expression. CSC-resembling phenotypes were observed through migration, intrusion, and spherical colony formation assays. Flow cytometry was employed for sorting, based on the expression of CD44. RESULTS It was displayed that Fn infection was responsible for an EMT phenotype associated with an increase in mesenchymal markers (Snail1, Vimentin, and ZEB1) as well as CD44 expression. Fn treatment induced stronger expressions of such markers when MOI increased. Furthermore, infection resulted in augmented migration, intrusion, and tumorsphere formation capacities. Cell classification implicated that mere CD44high cells exhibited CSC characteristics and mesenchymal phenotype (MP) in vitro, accompanied with augmented tumor-causing capacity over CD44low cells. Finally, we demonstrated IL-6/STAT3 pathway was involved in EMT-CSC-resembling behavior of CRC cells. CONCLUSION All of these data suggest that Fn reveals CSC-resembling characteristics through activating IL-6/STAT3 and eliciting EMT-resembling variations in colorectal epithelial cells (CECs).
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Affiliation(s)
- Qin Wang
- Department of Clinical Medicine, Jiangsu Health Vocational CollegeNanjing, China
| | - Chen Yu
- Department of Integrated Traditional Chinese and Western Medicine, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical UniversityNanjing, China
| | - Chao Yue
- Department of General Surgery, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical UniversityNanjing, China
| | - Xin Liu
- Department of Prevention and Control for Occupational Disease, Jiangsu Provincial Center for Disease Prevention and ControlNanjing, China
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171
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Yu H, Qiu N, Meng Y, Keast R. A comparative study of the modulation of the gut microbiota in rats by dietary intervention with different sources of egg-white proteins. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2020; 100:3622-3629. [PMID: 32198763 DOI: 10.1002/jsfa.10387] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 03/14/2020] [Accepted: 03/20/2020] [Indexed: 06/10/2023]
Abstract
BACKGROUND Gut microflora dysbiosis has been related closely to a variety of diseases including obesity and inflammatory bowel disease. Proteins and peptides in egg white have been found to alleviate inflammation but the role played by the intestinal flora is still unclear. Using casein as a dietary protein control, we investigated the effects of diets composed of hen egg white, duck egg white, and preserved egg white on gut microbiota in the rat cecum. RESULTS The gut microbiota in rats were altered after egg-white consumption. The results showed that rats fed with egg white had a similar overall structure of cecal bacterial communities, which was different from those fed with casein. The relative abundance of Akkermansia in the group of rats fed with hen egg white was highest among all groups. Rats fed with duck egg white had significantly higher relative abundance of Proteobacteria and Peptostreptococcaceae, and lower relative abundance of Lachnospiraceae. In addition, the levels of lipopolysaccharide (LPS) and lipopolysaccharide-binding protein (LBP) in rats fed with duck egg white and preserved egg white were lower than the levels in rats fed with hen egg white. CONCLUSION Our results indicated the possible positive effect on homeostasis of the intestinal flora brought about by the intake of duck egg white. This study provides an insight into the potential positive impact of preserved egg white on health by changing gut microbiota and affecting the antigen load. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Haichuan Yu
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, P. R. China
| | - Ning Qiu
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, P. R. China
| | - Yaqi Meng
- National Research and Development Center for Egg Processing, College of Food Science and Technology, Huazhong Agricultural University, Wuhan, P. R. China
| | - Russell Keast
- Centre for Advanced Sensory Science, School of Exercise and Nutrition Sciences, Deakin University, Burwood, Australia
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172
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Fülling C, Lach G, Bastiaanssen TFS, Fouhy F, O'Donovan AN, Ventura-Silva AP, Stanton C, Dinan TG, Cryan JF. Adolescent dietary manipulations differentially affect gut microbiota composition and amygdala neuroimmune gene expression in male mice in adulthood. Brain Behav Immun 2020; 87:666-678. [PMID: 32119901 DOI: 10.1016/j.bbi.2020.02.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 02/11/2020] [Accepted: 02/26/2020] [Indexed: 02/06/2023] Open
Abstract
Adolescence is a critical developmental period that is characterised by growth spurts and specific neurobiological, neuroimmune and behavioural changes. In tandem the gut microbiota, which is a key player in the regulation of health and disease, is shaped during this time period. Diet is one of the most important regulators of microbiota composition. Thus, we hypothesised that dietary disturbances of the microbiota during this critical time window result in long-lasting changes in immunity, brain and behaviour. C57BL/6 male mice were exposed to either high fat diet or cafeteria diet during the adolescent period from postnatal day 28 to 49 and were tested for anxiety-related and social behaviour in adulthood. Our results show long-lasting effects of dietary interventions during the adolescent period on microbiota composition and the expression of genes related to neuroinflammation or neurotransmission. Interestingly, changes in myelination-related gene expression in the prefrontal cortex following high fat diet exposure were also observed. However, these effects did not translate into overt behavioural changes in adulthood. Taken together, these data highlight the importance of diet-microbiota interactions during the adolescent period in shaping specific outputs of the microbiota-gut-brain axis in later life.
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Affiliation(s)
| | - Gilliard Lach
- APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Thomaz F S Bastiaanssen
- APC Microbiome Ireland, University College Cork, Cork, Ireland; Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland
| | - Fiona Fouhy
- APC Microbiome Ireland, University College Cork, Cork, Ireland; Teagasc Food Research Centre, Food Biosciences Department, Moorepark, Fermoy, Cork, Ireland
| | - Aoife N O'Donovan
- APC Microbiome Ireland, University College Cork, Cork, Ireland; Teagasc Food Research Centre, Food Biosciences Department, Moorepark, Fermoy, Cork, Ireland; School of Microbiology, University College Cork, Cork, Ireland
| | | | - Catherine Stanton
- APC Microbiome Ireland, University College Cork, Cork, Ireland; Teagasc Food Research Centre, Food Biosciences Department, Moorepark, Fermoy, Cork, Ireland
| | - Timothy G Dinan
- APC Microbiome Ireland, University College Cork, Cork, Ireland; Department of Psychiatry and Neurobehavioural Sciences, University College Cork, Cork, Ireland
| | - John F Cryan
- APC Microbiome Ireland, University College Cork, Cork, Ireland; Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland.
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173
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Achufusi TGO, Sharma A, Zamora EA, Manocha D. Small Intestinal Bacterial Overgrowth: Comprehensive Review of Diagnosis, Prevention, and Treatment Methods. Cureus 2020; 12:e8860. [PMID: 32754400 PMCID: PMC7386065 DOI: 10.7759/cureus.8860] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 06/24/2020] [Indexed: 12/15/2022] Open
Abstract
Small intestinal bacterial overgrowth (SIBO) is a commonly diagnosed gastrointestinal disorder affecting millions of individuals throughout the United States. It refers to a condition in which there is an excess and imbalance of small intestinal bacteria. Despite its prevalence, it remains underdiagnosed due to the invasive nature of diagnostic testing. Symptoms observed in SIBO, including abdominal distension, bloating, diarrhea, and gas formation, are nonspecific and can overlap with other gastrointestinal disorders. Frequently cited predisposing factors include gastric acid suppression, dysmotility, gastric bypass, and opioids. The diagnostic gold standard remains small bowel aspirate and culture. However, due to its invasive nature, it remains an unpopular method among patients and clinicians alike. Glucose and lactulose breath testing have become the go-to diagnostic method in clinical practice due to its noninvasive nature and low cost. Treatment is guided towards the eradication of bacteria in the small bowel and usually consists of a prolonged course of oral antibiotics. Due to recent advances in our understanding of the human microbiome, we are surely poised for a transformation in our approach to diagnosing and treating this condition.
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Affiliation(s)
- Ted George O Achufusi
- Internal Medicine, State University of New York Upstate Medical University, Syracuse, USA
| | - Anuj Sharma
- Gastroenterology, State University of New York Upstate Medical University, Syracuse, USA
| | - Ernesto A Zamora
- Internal Medicine, State University of New York Upstate Medical University, Syracuse, USA
| | - Divey Manocha
- Gastroenterology, State University of New York Upstate Medical University, Syracuse, USA
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174
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Bennett CJ, Henry R, Snipe RMJ, Costa RJS. Is the gut microbiota bacterial abundance and composition associated with intestinal epithelial injury, systemic inflammatory profile, and gastrointestinal symptoms in response to exertional-heat stress? J Sci Med Sport 2020; 23:1141-1153. [PMID: 32620352 DOI: 10.1016/j.jsams.2020.06.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Revised: 04/24/2020] [Accepted: 06/02/2020] [Indexed: 02/08/2023]
Abstract
OBJECTIVES The study aimed to examine if the α-diversity and relative abundance of the gastrointestinal bacterial taxa is associated with the response magnitude of markers characteristic of exercise-induced gastrointestinal syndrome in response to exertional-heat stress. DESIGN Cross-sectional. METHODS Twenty-two endurance-trained athletes completed 2h running at 60% V.O2max in hot ambient conditions (35.2°C, 25% relative humidity). Faecal samples were collected pre-exercise to determine bacterial taxonomy by 16S rRNA amplicon sequencing (Illumina MiSeq platform). Data were processed using the QIIME2 pipeline (v2019.1) establishing taxonomic classification with >95% confidence using SILVA. Pre- and post-exercise blood samples were used to determine plasma I-FABP and cortisol concentrations, and systemic inflammatory response profile. Markers of physiological and thermoregulatory strain, and gastrointestinal symptoms were measured every 10min during exercise. Associations were determined by partial correlation controlled for body mass variables. RESULTS Positive associations between Tenericutes (r(18)=0.446, p=0.049) and Verrucomicrobia (r(18)=0.450, p=0.046) phylum, Akkermansiaceae (r(18)=0.486, p=0.030) and Ruminococcaceae (r(18)=0.449, p=0.047) family and aligned genus groups with I-FABP were observed. Whilst, associations between Faecalibacterium (r(12)=0.668, p=0.009) and Ruminoclostridium-9 (r(12)=-0.577, p=0.031) genus with systemic inflammatory profile were observed. Association between bacterial phyla, family, and genus groups were also observed for gastrointestinal symptoms and markers of thermoregulatory strain (r(18) >0.400, p<0.05). CONCLUSIONS The relative abundance of several commensal bacterial groups showed modest favourable (i.e., low perturbations) or detrimental associations with the magnitude of gastrointestinal integrity perturbations and symptoms, and potentially influences body temperature change, in response to exertional-heat stress.
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Affiliation(s)
| | - Rebekah Henry
- Monash University, Department of Civil Engineering, Australia
| | | | - Ricardo J S Costa
- Monash University, Department of Nutrition Dietetics & Food, Australia.
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175
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Auffret MD, Stewart RD, Dewhurst RJ, Duthie CA, Watson M, Roehe R. Identification of Microbial Genetic Capacities and Potential Mechanisms Within the Rumen Microbiome Explaining Differences in Beef Cattle Feed Efficiency. Front Microbiol 2020; 11:1229. [PMID: 32582125 PMCID: PMC7292206 DOI: 10.3389/fmicb.2020.01229] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 05/14/2020] [Indexed: 12/15/2022] Open
Abstract
In this study, Bos Taurus cattle offered one high concentrate diet (92% concentrate-8% straw) during two independent trials allowed us to classify 72 animals comprising of two cattle breeds as "Low" or "High" feed efficiency groups. Digesta samples were taken from individual beef cattle at the abattoir. After metagenomic sequencing, the rumen microbiome composition and genes were determined. Applying a targeted approach based on current biological evidence, 27 genes associated with host-microbiome interaction activities were selected. Partial least square analysis enabled the identification of the most significant genes and genera of feed efficiency (VIP > 0.8) across years of the trial and breeds when comparing all potential genes or genera together. As a result, limited number of genes explained about 40% of the variability in both feed efficiency indicators. Combining information from rumen metagenome-assembled genomes and partial least square analysis results, microbial genera carrying these genes were determined and indicated that a limited number of important genera impacting on feed efficiency. In addition, potential mechanisms explaining significant difference between Low and High feed efficiency animals were analyzed considering, based on the literature, their gastrointestinal location of action. High feed efficiency animals were associated with microbial species including several Eubacterium having the genetic capacity to form biofilm or releasing metabolites like butyrate or propionate known to provide a greater contribution to cattle energy requirements compared to acetate. Populations associated with fucose sensing or hemolysin production, both mechanisms specifically described in the lower gut by activating the immune system to compete with pathogenic colonizers, were also identified to affect feed efficiency using rumen microbiome information. Microbial mechanisms associated with low feed efficiency animals involved potential pathogens within Proteobacteria and Spirochaetales, releasing less energetic substrates (e.g., acetate) or producing sialic acid to avoid the host immune system. Therefore, this study focusing on genes known to be involved in host-microbiome interaction improved the identification of rumen microbial genetic capacities and potential mechanisms significantly impacting on feed efficiency in beef cattle fed high concentrate diet.
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Affiliation(s)
| | - Robert D. Stewart
- Division of Genetics and Genomics, The Roslin Institute and R(D)SVS, University of Edinburgh, Edinburgh, United Kingdom
| | | | | | - Mick Watson
- Division of Genetics and Genomics, The Roslin Institute and R(D)SVS, University of Edinburgh, Edinburgh, United Kingdom
- Edinburgh Genomics, The Roslin Institute and R(D)SVS, University of Edinburgh, Edinburgh, United Kingdom
| | - Rainer Roehe
- Scotland’s Rural College (SRUC), Edinburgh, United Kingdom
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176
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Gaskell SK, Taylor B, Muir J, Costa RJ. Impact of 24-h high and low fermentable oligo-, di-, monosaccharide, and polyol diets on markers of exercise-induced gastrointestinal syndrome in response to exertional heat stress. Appl Physiol Nutr Metab 2020; 45:569-580. [DOI: 10.1139/apnm-2019-0187] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The study aimed to determine the effects of 24-h high (HFOD) and low (LFOD) fermentable oligo-, di-, monosaccharide, and polyol (FODMAP) diets before exertional heat stress on gastrointestinal integrity, function, and symptoms. Eighteen endurance runners consumed a HFOD and a LFOD (double-blind crossover design) before completing 2 h of running at 60% maximal oxygen uptake in 35 °C ambient temperature. Blood samples were collected before and after exercise to determine plasma cortisol and intestinal fatty acid binding protein (I-FABP) concentrations, and bacterial endotoxin and cytokine profiles. Breath hydrogen (H2) and gastrointestinal symptoms (GIS) were determined pre-exercise, every 15 min during, and in recovery. No differences were observed for plasma cortisol concentration between diets. Plasma I-FABP concentration was lower on HFOD compared with LFOD (p = 0.033). A trend for lower lipopolysaccharide binding protein (p = 0.088), but not plasma soluble CD14 (p = 0.478) and cytokine profile (p > 0.05), responses on HFOD was observed. A greater area under the curve breath H2 concentration (p = 0.031) was observed throughout HFOD (mean and 95% confidence interval: HFOD 2525 (1452–3597) ppm·4 h−1) compared with LFOD (1505 (1031–1978) ppm·4 h−1). HFOD resulted in greater severity of GIS compared with LFOD (pre-exercise, p = 0.017; during, p = 0.035; and total, p = 0.014). A 24-h HFOD before exertional heat stress ameliorates disturbances to epithelial integrity but exacerbates carbohydrate malabsorption and GIS severity in comparison with a LFOD. Novelty Twenty-four-hour high FODMAP diet ameliorated disturbances to gastrointestinal integrity. Twenty-four-hour high FODMAP diet results in greater carbohydrate malabsorption compared with low FODMAP diet. Incidence of GIS during exertional heat stress were pronounced on both low and high FODMAP diets, but greater GIS severity was observed with high FODMAP diet.
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Affiliation(s)
- Stephanie K. Gaskell
- Department of Nutrition, Dietetics and Food, Monash University, Notting Hill, Victoria 3168, Australia
| | - Bonnie Taylor
- Department of Nutrition, Dietetics and Food, Monash University, Notting Hill, Victoria 3168, Australia
| | - Jane Muir
- Department of Gastroenterology - The Alfred Hospital, Monash University, Melbourne, Victoria 3004, Australia
| | - Ricardo J.S. Costa
- Department of Nutrition, Dietetics and Food, Monash University, Notting Hill, Victoria 3168, Australia
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177
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Verdugo-Meza A, Ye J, Dadlani H, Ghosh S, Gibson DL. Connecting the Dots Between Inflammatory Bowel Disease and Metabolic Syndrome: A Focus on Gut-Derived Metabolites. Nutrients 2020; 12:E1434. [PMID: 32429195 PMCID: PMC7285036 DOI: 10.3390/nu12051434] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/12/2020] [Accepted: 05/13/2020] [Indexed: 02/06/2023] Open
Abstract
The role of the microbiome in health and disease has gained considerable attention and shed light on the etiology of complex diseases like inflammatory bowel disease (IBD) and metabolic syndrome (MetS). Since the microorganisms inhabiting the gut can confer either protective or harmful signals, understanding the functional network between the gut microbes and the host provides a comprehensive picture of health and disease status. In IBD, disruption of the gut barrier enhances microbe infiltration into the submucosae, which enhances the probability that gut-derived metabolites are translocated from the gut to the liver and pancreas. Considering inflammation and the gut microbiome can trigger intestinal barrier dysfunction, risk factors of metabolic diseases such as insulin resistance may have common roots with IBD. In this review, we focus on the overlap between IBD and MetS, and we explore the role of common metabolites in each disease in an attempt to connect a common origin, the gut microbiome and derived metabolites that affect the gut, liver and pancreas.
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Affiliation(s)
- Andrea Verdugo-Meza
- Department of Biology, University of British Columbia, Okanagan campus, Kelowna, BC V6T 1Z4, Canada; (A.V.-M.); (J.Y.); (H.D.)
| | - Jiayu Ye
- Department of Biology, University of British Columbia, Okanagan campus, Kelowna, BC V6T 1Z4, Canada; (A.V.-M.); (J.Y.); (H.D.)
| | - Hansika Dadlani
- Department of Biology, University of British Columbia, Okanagan campus, Kelowna, BC V6T 1Z4, Canada; (A.V.-M.); (J.Y.); (H.D.)
| | - Sanjoy Ghosh
- Department of Biology, University of British Columbia, Okanagan campus, Kelowna, BC V6T 1Z4, Canada; (A.V.-M.); (J.Y.); (H.D.)
| | - Deanna L. Gibson
- Department of Biology, University of British Columbia, Okanagan campus, Kelowna, BC V6T 1Z4, Canada; (A.V.-M.); (J.Y.); (H.D.)
- Department of Medicine, University of British Columbia, Okanagan campus, Kelowna, BC V1V 1V7, Canada
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178
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Patil Y, Gooneratne R, Ju XH. Interactions between host and gut microbiota in domestic pigs: a review. Gut Microbes 2020; 11:310-334. [PMID: 31760878 PMCID: PMC7524349 DOI: 10.1080/19490976.2019.1690363] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 10/16/2019] [Accepted: 11/04/2019] [Indexed: 02/03/2023] Open
Abstract
It is well established that pig gut microbiota plays a critical role in maintaining metabolic homeostasis as well as in a myriad of physiological, neurological and immunological functions; including protection from pathogens and digestion of food materials - some of which would be otherwise indigestible by the pig. A rich and diverse gut microbial ecosystem (balanced microbiota) is the hallmark of good health; while qualitative and quantitative perturbations in the microbial composition can lead to development of various diseases. Alternatively, diseases caused by stressors or other factors have been shown to negatively impact the microbiota. This review focuses primarily on how commensal microorganisms in the gastrointestinal tract of pigs influence biochemical, physiological, immunological, and metabolic processes within the host animal.
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Affiliation(s)
- Yadnyavalkya Patil
- College of Agricultural Sciences, Department of Veterinary Medicine, Guangdong Ocean University, Zhanjiang, China
- Faculty of Agriculture and Life Sciences, Department of Wine, Food, and Molecular Biosciences, Lincoln University, Lincoln, Canterbury, New Zealand
- Shenzhen Institute, Guangdong Ocean University, Shenzhen, China
| | - Ravi Gooneratne
- Faculty of Agriculture and Life Sciences, Department of Wine, Food, and Molecular Biosciences, Lincoln University, Lincoln, Canterbury, New Zealand
| | - Xiang-Hong Ju
- College of Agricultural Sciences, Department of Veterinary Medicine, Guangdong Ocean University, Zhanjiang, China
- Shenzhen Institute, Guangdong Ocean University, Shenzhen, China
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179
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Lee KH, Song Y, Wu W, Yu K, Zhang G. The gut microbiota, environmental factors, and links to the development of food allergy. Clin Mol Allergy 2020; 18:5. [PMID: 32265597 PMCID: PMC7119288 DOI: 10.1186/s12948-020-00120-x] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 02/17/2020] [Indexed: 12/24/2022] Open
Abstract
Food allergy appears to have its roots in an insufficient exposure to a diverse range of environmental microbiota during early life. Microbial exposure ensures the colonization of the gastrointestinal tract with commensal microbes, which is necessary for the induction of a balanced and tolerogenic immune function. High-throughput sequencing technology has facilitated in-depth studies of the gut microbiota as well as bacterial-derived metabolites. Although the role of the microbiota in allergies is now widely studied, its importance for food allergy was only recently noted. Studies in human cohorts have shown that there is an association of dysbiosis and pathogenesis of food allergy, while studies from animal models have demonstrated the capacity of specific species in the gut microbiota to alter immune response, which may lead to the desensitization of food allergy. This article reviews the role of the gut microbiota in food allergy, and discusses the influence of environmental factors as well as prevention and management strategies relating to such regulatory mechanism.
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Affiliation(s)
- Khui Hung Lee
- 1School of Public Health, Curtin University of Technology, Bentley, WA Australia.,2Curtin Health and Innovation Research Institute, Curtin University, Perth, WA 6102 Australia
| | - Yong Song
- 1School of Public Health, Curtin University of Technology, Bentley, WA Australia
| | - Weidong Wu
- 3School of Public Health, Xinxiang Medical University, 601 Jinsui street, Xinxiang, Henan China
| | - Kan Yu
- 4School of Science, Edith Cowan University, Joondalup, WA Australia
| | - Guicheng Zhang
- 1School of Public Health, Curtin University of Technology, Bentley, WA Australia.,2Curtin Health and Innovation Research Institute, Curtin University, Perth, WA 6102 Australia
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180
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The Link between Gut Dysbiosis and Neuroinflammation in Parkinson’s Disease. Neuroscience 2020; 432:160-173. [DOI: 10.1016/j.neuroscience.2020.02.030] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 02/16/2020] [Accepted: 02/18/2020] [Indexed: 02/07/2023]
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181
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Ji Y, Yin W, Liang Y, Sun L, Yin Y, Zhang W. Anti-Inflammatory and Anti-Oxidative Activity of Indole-3-Acetic Acid Involves Induction of HO-1 and Neutralization of Free Radicals in RAW264.7 Cells. Int J Mol Sci 2020; 21:ijms21051579. [PMID: 32106625 PMCID: PMC7084870 DOI: 10.3390/ijms21051579] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 02/22/2020] [Accepted: 02/24/2020] [Indexed: 02/07/2023] Open
Abstract
The cellular and molecular mechanisms by which indole-3-acetic acid (IAA), a tryptophan-derived metabolite from gut microbiota, attenuates inflammation and oxidative stress has not been fully elucidated. The present study was to unearth the protective effect and underlying mechanism of IAA against lipopolysaccharide (LPS)-induced inflammatory response and free radical generation in RAW264.7 macrophages. IAA significantly ameliorated LPS-induced expression of interleukin-1β (IL-1β), interleukin-6 (IL-6), and monocyte chemoattractant protein-1 (MCP-1) as well as generation of reactive oxidative species (ROS) and nitric oxide (NO). LPS-triggered nuclear translocation of nuclear factor kappa B (NF-κB) p65 was mitigated by IAA treatment. Further, an up-regulation of heme oxygenase-1 (HO-1) was observed in IAA-treated cells in dose-dependent manner under both normal and LPS-stimulated condition. Interference of HO-1 activity by tin protoporphyrin IX (SnPP) impeded the alleviative effects of IAA on expression of IL-1β and IL-6 induced by LPS, whereas demonstrated no effect on its suppression of ROS and NO production. This result suggests a HO-1-dependent anti-inflammatory effect of IAA and its direct scavenging action on free radicals. Treatment with CH-223191, a specific antagonist of aryl hydrocarbon receptor (AhR), showed no significant effects on the beneficial role of IAA against inflammation and free radical generation. In summary, our findings indicate that IAA alleviates LPS-elicited inflammatory response and free radical generation in RAW264.7 macrophages by induction of HO-1 and direct neutralization of free radicals, a mechanism independent of AhR.
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Affiliation(s)
| | | | | | | | - Yue Yin
- Correspondence: ; Tel./Fax: +86-10-82802183
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182
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Vafa S, Haghighat S, Janani L, Totmaj AS, Navaei M, Amirinejad A, Emamat H, Salehi Z, Zarrati M. The effects of synbiotic supplementation on serum inflammatory markers and edema volume in breast cancer survivors with lymphedema. EXCLI JOURNAL 2020; 19:1-15. [PMID: 32038113 PMCID: PMC7003637 DOI: 10.17179/excli2019-1876] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 12/18/2019] [Indexed: 12/17/2022]
Abstract
Breast cancer-related lymphedema (BCRL) is one of the most common complications of breast cancer treatments, which may be exacerbated by obesity. Dysbiosis may negatively impact the management of obesity and lymphedema by increasing inflammation. The objective of this study was to assess the effects of supplementation with synbiotics on inflammatory markers, serum leptin concentration and edema volume in overweight and obese BCRL women following a low-calorie diet (LCD). In a randomized double-blind controlled clinical trial, 88 breast cancer survivors with lymphedema were supplemented once a day for 10 weeks with either a synbiotic or a placebo capsule. Both groups were under a low-calorie diet (LCD). At the end of the study, synbiotic supplementation resulted in a significant reduction in leptin (P=0.003) and TNF-α (P=0.039) between the study groups. Besides, edema volume was significantly reduced within the synbiotic group after the intervention. We did not observe any significant effects of the synbiotic supplementation in hs-CRP, and IL-1β between the study groups (P=0.550, P=0.118 respectively). Conclusively, synbiotic supplementation along with an LCD program in breast cancer survivors with lymphedema had beneficial effects on the concentration of serum inflammatory markers and edema volume.
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Affiliation(s)
- Saeideh Vafa
- Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Shahpar Haghighat
- Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran
| | - Leila Janani
- Department of Biostatistics, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Ali Saneei Totmaj
- Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Mehraban Navaei
- Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Ali Amirinejad
- Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
| | - Hadi Emamat
- Student Research Committee, Department of Clinical Nutrition and Dietetics, Faculty of Nutrition Sciences and Food Technology, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Zahra Salehi
- Immunology Department, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mitra Zarrati
- Department of Nutrition, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
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183
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Chen HL, Zhao XY, Zhao GX, Huang HB, Li HR, Shi CW, Yang WT, Jiang YL, Wang JZ, Ye LP, Zhao Q, Wang CF, Yang GL. Dissection of the cecal microbial community in chickens after Eimeria tenella infection. Parasit Vectors 2020; 13:56. [PMID: 32046772 PMCID: PMC7014781 DOI: 10.1186/s13071-020-3897-6] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 01/07/2020] [Indexed: 01/08/2023] Open
Abstract
Background Eimeria spp. are responsible for chicken coccidiosis which is the most important enteric protozoan disease resulting in tremendous economic losses in the poultry industry. Understanding the interaction between the avian cecal microbiota and coccidia is of interest in the development of alternative treatments that do not rely on chemotherapeutics and do not lead to drug resistance. Methods We utilized 16S rRNA gene sequencing to detect the dynamics of the cecal microbial community in AA broilers challenged with Eimeria tenella. Histopathological analysis of the cecum was also conducted. Results We found that microbial shifts occur during the infection. Lactobacillus, Faecalibacterium, Ruminococcaceae UCG-013, Romboutsia and Shuttleworthia decreased in abundance. However, the opportunistic pathogens Enterococcus and Streptococcus increased in abundance over time in response to the infection. Conclusions Eimeria tenella disrupts the integrity of the cecal microbiota and could promote the establishment and growth of potentially pathogenic bacteria. Defining bacterial populations affected by coccidial infection might help identify bacterial markers for intestinal disease as well as populations or species that could be beneficial in maintaining and restoring gut homeostasis during and after infection with E. tenella.
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Affiliation(s)
- Hong-Liang Chen
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Xin-Yu Zhao
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Guang-Xun Zhao
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Hai-Bin Huang
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Hao-Rui Li
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Chun-Wei Shi
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Wen-Tao Yang
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Yan-Long Jiang
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Jian-Zhong Wang
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Li-Ping Ye
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Quan Zhao
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China
| | - Chun-Feng Wang
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China.
| | - Gui-Lian Yang
- College of Animal Science and Technology, Jilin Provincial Engineering Research Center of Animal Probiotics, Key Laboratory of Animal Production and Product Quality Safety of Ministry of Education, Jilin Agricultural University, Changchun, China.
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184
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Shalapour S, Karin M. Cruel to Be Kind: Epithelial, Microbial, and Immune Cell Interactions in Gastrointestinal Cancers. Annu Rev Immunol 2020; 38:649-671. [PMID: 32040356 DOI: 10.1146/annurev-immunol-082019-081656] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A plethora of experimental and epidemiological evidence supports a critical role for inflammation and adaptive immunity in the onset of cancer and in shaping its response to therapy. These data are particularly robust for gastrointestinal (GI) cancers, such as those affecting the GI tract, liver, and pancreas, on which this review is focused. We propose a unifying hypothesis according to which intestinal barrier disruption is the origin of tumor-promoting inflammation that acts in conjunction with tissue-specific cancer-initiating mutations. The gut microbiota and its products impact tissue-resident and recruited myeloid cells that promote tumorigenesis through secretion of growth- and survival-promoting cytokines that act on epithelial cells, as well as fibrogenic and immunosuppressive cytokines that interfere with the proper function of adaptive antitumor immunity. Understanding these relationships should improve our ability to prevent cancer development and stimulate the immune system to eliminate existing malignancies.
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Affiliation(s)
- Shabnam Shalapour
- Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology, School of Medicine, University of California, San Diego, La Jolla, California 92093, USA; , .,Department of Pharmacology, School of Medicine, University of California, San Diego, La Jolla, California 92093, USA
| | - Michael Karin
- Laboratory of Gene Regulation and Signal Transduction, Department of Pharmacology, School of Medicine, University of California, San Diego, La Jolla, California 92093, USA; , .,Department of Pharmacology, School of Medicine, University of California, San Diego, La Jolla, California 92093, USA.,Moores Cancer Center, University of California, San Diego, La Jolla, California 92093, USA
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185
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Modulation of hippocampal TLR4/BDNF signal pathway using probiotics is a step closer towards treating cognitive impairment in NASH model. Physiol Behav 2020; 214:112762. [DOI: 10.1016/j.physbeh.2019.112762] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 11/26/2019] [Accepted: 11/27/2019] [Indexed: 02/08/2023]
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186
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Rezazadeh L, Alipour B, Jafarabadi MA, Gargari BP. Evaluation of the effects of probiotic yoghurt on inflammation and cardiometabolic risk factors in subjects with metabolic syndrome: A randomised controlled trial. Int Dairy J 2020. [DOI: 10.1016/j.idairyj.2019.104577] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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187
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Pellegrini M, Ippolito M, Monge T, Violi R, Cappello P, Ferrocino I, Cocolin LS, De Francesco A, Bo S, Finocchiaro C. Gut microbiota composition after diet and probiotics in overweight breast cancer survivors: a randomized open-label pilot intervention trial. Nutrition 2020; 74:110749. [PMID: 32234652 DOI: 10.1016/j.nut.2020.110749] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 11/15/2019] [Accepted: 01/19/2020] [Indexed: 01/08/2023]
Abstract
OBJECTIVES Breast cancer (BC) is the most diagnosed cancer in women. Increasing survival rates shift attention to preventive strategies. Obesity and intestinal microbiota composition may be associated with BC. A Mediterranean diet (MD) proved to be protective. The aim of this study was to assess the efficacy of probiotics in addition to an MD versus diet alone in influencing gut microbiota and metabolic profile in overweight BC survivors. METHODS A total of 34 BC survivors were randomly assigned to an MD for 4 mo plus 1 sachet/d of probiotics (Bifidobacterium longum BB536, Lactobacillus rhamnosus HN001) for the first 2 mo (intervention group, n = 16) or an MD alone for 4 mo (control group, n = 18). Anthropometric and nutritional assessments, adherence to the MD, compliance with physical activity, and metabolic parameters dosage were performed at baseline (T0), at 2 mo (T2), and at 4 mo (T4). Intestinal microbiota analysis was performed at T0 and T2. RESULTS After 2 mo of probiotic administration the number of bacterial species (P = 0.01) and the bacterial diversity assessed with the Chao1 index (P = 0.004) significantly increased; no significant variations were detected after diet alone. The Bacteroidetes-to-Firmicutes ratio significantly decreased in the intervention group and increased in controls (P = 0.004). Significant reductions of body weight, body mass index, fasting glucose, and homeostasis model assessment of insulin resistance were identified at T4 in both groups; in the intervention group waist circumference (P = 0.012), waist-to-hip ratio (P = 0.045), and fasting insulin (P = 0.017) also significantly decreased. CONCLUSIONS Probiotics in addition to an MD positively influence gut microbiota and improve metabolic and anthropometric parameters compared with an MD alone.
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Affiliation(s)
- Marianna Pellegrini
- Department of Clinical Nutrition, Città della Salute e della Scienza, Turin, Italy
| | - Mirko Ippolito
- Department of Clinical Nutrition, Città della Salute e della Scienza, Turin, Italy
| | - Taira Monge
- Department of Clinical Nutrition, Città della Salute e della Scienza, Turin, Italy
| | - Rossella Violi
- Department of Clinical Nutrition, Città della Salute e della Scienza, Turin, Italy
| | - Paola Cappello
- CeRMS Labortory of Tumor Immunology, University of Turin, Italy
| | - Ilario Ferrocino
- Department of Agricultural, Forest and Food Sciences, University of Turin, Italy
| | - Luca Simone Cocolin
- Department of Agricultural, Forest and Food Sciences, University of Turin, Italy
| | | | - Simona Bo
- Department of Medical Science, University of Turin, Italy
| | - Concetta Finocchiaro
- Department of Clinical Nutrition, Città della Salute e della Scienza, Turin, Italy.
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188
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González-Mercado VJ, Lim J, Berk L, Esele M, Rodríguez CS, Colón-Otero G. Gut microbiota differences in Island Hispanic Puerto Ricans and mainland non-Hispanic whites during chemoradiation for rectal cancer: A pilot study. Curr Probl Cancer 2020; 44:100551. [PMID: 32057462 DOI: 10.1016/j.currproblcancer.2020.100551] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 01/15/2020] [Indexed: 12/14/2022]
Abstract
PURPOSE To investigate whether there are differences in diversity, taxonomic composition, and predicted functional pathways of the gut microbiome between Island Hispanic Puerto Ricans (HPR) and mainland non-Hispanic whites (NHW) measured before and at the end of chemo-radiation (CRT) for Rectal Cancer. METHODS Fifty-six stool samples of newly diagnosed rectal cancer patients (25 HPR and 31 NHW) were amplicon-sequenced during chemo-radiotherapy. 16S rRNA gene data was analyzed using QIIME2, phyloseq, and LEfSe. RESULTS We observed similar within-sample alpha diversity for HPR and NHW participants during CRT. However, at the end of CRT, several taxa were present at significantly different abundances across both groups. Taxa enriched in the gut of HPR compared to NHW included Muribaculaceae, Prevotella 2 and 7, Gemella, Bacillales Family XI, Catenibacterium, Sutterella, Pasteurellales, and Pasteurellaceae genera, whereas over-represented taxa in NHW participants were Turicibacter and Eubacteriaceae. Significant differences in predicted HPR microbiota functions included pathways for synthesis of L-methionine and degradation of phenylethylamine and phenylacetate. CONCLUSION In this pilot study, taxonomic analyses and functional predictions of the gut microbiomes suggest greater inflammatory potential in gut microbial functions among HPR rectal cancer patients undergoing CRT compared to that of NHW participants.
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Affiliation(s)
| | - Jean Lim
- College of Nursing, University of South Florida, Tampa, Florida
| | - Lawrence Berk
- Radiation Oncology, College of Medicine Radiology, University of South Florida, Tampa, Florida
| | - Mary Esele
- School of Nursing, South University, Tampa, Florida
| | | | - Gerardo Colón-Otero
- Division of Hematology-Oncology, Mayo Clinic Cancer Center, Mayo Clinic College of Medicine, Jacksonville, Florida
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189
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Abstract
The bacterial communities that live within the human gut have been linked to health and disease. However, we are still just beginning to understand how those bacteria interact and what potential interventions to our gut microbiome can make us healthier. Here, we present a mathematical modeling framework (named MICOM) that can recapitulate the growth rates of diverse bacterial species in the gut and can simulate metabolic interactions within microbial communities. We show that MICOM can unravel the ecological rules that shape the microbial landscape in our gut and that a given dietary or probiotic intervention can have widely different effects in different people. Compositional changes in the gut microbiota have been associated with a variety of medical conditions such as obesity, Crohn’s disease, and diabetes. However, connecting microbial community composition to ecosystem function remains a challenge. Here, we introduce MICOM, a customizable metabolic model of the human gut microbiome. By using a heuristic optimization approach based on L2 regularization, we were able to obtain a unique set of realistic growth rates that corresponded well with observed replication rates. We integrated adjustable dietary and taxon abundance constraints to generate personalized metabolic models for individual metagenomic samples. We applied MICOM to a balanced cohort of metagenomes from 186 people, including a metabolically healthy population and individuals with type 1 and type 2 diabetes. Model results showed that individual bacterial genera maintained conserved niche structures across humans, while the community-level production of short-chain fatty acids (SCFAs) was heterogeneous and highly individual specific. Model output revealed complex cross-feeding interactions that would be difficult to measure in vivo. Metabolic interaction networks differed somewhat consistently between healthy and diabetic subjects. In particular, MICOM predicted reduced butyrate and propionate production in a diabetic cohort, with restoration of SCFA production profiles found in healthy subjects following metformin treatment. Overall, we found that changes in diet or taxon abundances have highly personalized effects. We believe MICOM can serve as a useful tool for generating mechanistic hypotheses for how diet and microbiome composition influence community function. All methods are implemented in an open-source Python package, which is available at https://github.com/micom-dev/micom. IMPORTANCE The bacterial communities that live within the human gut have been linked to health and disease. However, we are still just beginning to understand how those bacteria interact and what potential interventions to our gut microbiome can make us healthier. Here, we present a mathematical modeling framework (named MICOM) that can recapitulate the growth rates of diverse bacterial species in the gut and can simulate metabolic interactions within microbial communities. We show that MICOM can unravel the ecological rules that shape the microbial landscape in our gut and that a given dietary or probiotic intervention can have widely different effects in different people.
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190
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Sfera A, Osorio C, Diaz EL, Maguire G, Cummings M. The Other Obesity Epidemic-Of Drugs and Bugs. Front Endocrinol (Lausanne) 2020; 11:488. [PMID: 32849279 PMCID: PMC7411001 DOI: 10.3389/fendo.2020.00488] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Accepted: 06/22/2020] [Indexed: 12/13/2022] Open
Abstract
Chronic psychiatric patients with schizophrenia and related disorders are frequently treatment-resistant and may require higher doses of psychotropic drugs to remain stable. Prolonged exposure to these agents increases the risk of weight gain and cardiometabolic disorders, leading to poorer outcomes and higher medical cost. It is well-established that obesity has reached epidemic proportions throughout the world, however it is less known that its rates are two to three times higher in mentally ill patients compared to the general population. Psychotropic drugs have emerged as a major cause of weight gain, pointing to an urgent need for novel interventions to attenuate this unintended consequence. Recently, the gut microbial community has been linked to psychotropic drugs-induced obesity as these agents were found to possess antimicrobial properties and trigger intestinal dysbiosis, depleting Bacteroidetes phylum. Since germ-free animals exposed to psychotropics have not demonstrated weight gain, altered commensal flora composition is believed to be necessary and sufficient to induce dysmetabolism. Conversely, not only do psychotropics disrupt the composition of gut microbiota but the later alter the metabolism of the former. Here we review the role of gut bacterial community in psychotropic drugs metabolism and dysbiosis. We discuss potential biomarkers reflecting the status of Bacteroidetes phylum and take a closer look at nutritional interventions, fecal microbiota transplantation, and transcranial magnetic stimulation, strategies that may lower obesity rates in chronic psychiatric patients.
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Affiliation(s)
- Adonis Sfera
- Psychiatry, Loma Linda University, Loma Linda, CA, United States
- Department of Psychiatry, Patton State Hospital, San Bernardino, CA, United States
- *Correspondence: Adonis Sfera
| | - Carolina Osorio
- Department of Psychiatry, Loma Linda University, Loma Linda, CA, United States
| | - Eddie Lee Diaz
- Department of Psychiatry, Patton State Hospital, San Bernardino, CA, United States
| | - Gerald Maguire
- Department of Psychiatry, University of California, Riverside, Riverside, CA, United States
| | - Michael Cummings
- Department of Psychiatry, Patton State Hospital, San Bernardino, CA, United States
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191
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Guo K, Ruan G, Fan W, Fang L, Wang Q, Luo M, Yi T. The effect of nitrite and sulfide on the antioxidant capacity and microbial composition of the intestines of red swamp crayfish, Procambarus clarkii. FISH & SHELLFISH IMMUNOLOGY 2020; 96:290-296. [PMID: 31765791 DOI: 10.1016/j.fsi.2019.11.052] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 11/19/2019] [Accepted: 11/22/2019] [Indexed: 06/10/2023]
Abstract
Nitrite and sulfide are harmful pollutants in water ecosystems that negatively influence the survival and growth of crayfish. It is currently known that the intestine of crustaceans acts as a significant immune organ, serving as the front line of defense against diseases. In this study, we investigated how the oxidative damage parameters, antioxidant status and microbial composition of the intestine of Procambarus clarkii were influenced under acute nitrite (60 mg/L) and sulfide (18 mg/L) stress for 72 h. Compared with the control, after exposure to nitrite and sulfide stress, the production of reactive oxygen species, and the lipid peroxide and malondialdehyde contents increased in the intestines and were significantly higher after 72 h of exposure. The superoxide dismutase, catalase and glutathione peroxidase activities increased to maximum levels at 6, 24 and 12 h, respectively. These activities then decreased gradually and were significantly lower than those of the control after 48 or 72 h of exposure. In the crayfish exposed to stress, the expression of antioxidant genes including heat shock protein 70, ferritin and metallothionein increased to their maximum values at 12, 48 and 12 h, respectively. The expression levels then decreased gradually, and after 72 h, were lower than, or lacked significant differences with, the expression levels in the control. Additionally, nitrite and sulfide exposure restructured the intestinal microbial community of P. clarkii. This led to decreases in the abundance of some genera such as Citrobacter. However, the abundance of other genera, such as Shewanella and Acinetobacter, increased. Therefore, the health of P. clarkii was seriously impaired when exposed to nitrite and sulfide stress.
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Affiliation(s)
- Kun Guo
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Yangtze University, Jingzhou, 434000, PR China
| | - Guoliang Ruan
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Yangtze University, Jingzhou, 434000, PR China; Hubei Research Institute of Aquatic Industry Technology, Jingzhou, 434000, PR China.
| | - Wenhao Fan
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Yangtze University, Jingzhou, 434000, PR China
| | - Liu Fang
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Yangtze University, Jingzhou, 434000, PR China; Hubei Research Institute of Aquatic Industry Technology, Jingzhou, 434000, PR China
| | - Qian Wang
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Yangtze University, Jingzhou, 434000, PR China
| | - Mingzhong Luo
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Yangtze University, Jingzhou, 434000, PR China
| | - Tilin Yi
- Engineering Research Center of Ecology and Agricultural Use of Wetland, Ministry of Education, Yangtze University, Jingzhou, 434000, PR China; Hubei Research Institute of Aquatic Industry Technology, Jingzhou, 434000, PR China
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192
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Tiderencel KA, Hutcheon DA, Ziegler J. Probiotics for the treatment of type 2 diabetes: A review of randomized controlled trials. Diabetes Metab Res Rev 2020; 36:e3213. [PMID: 31465625 DOI: 10.1002/dmrr.3213] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 07/26/2019] [Accepted: 08/19/2019] [Indexed: 12/17/2022]
Abstract
With the increasing prevalence of type 2 diabetes mellitus (T2DM), there is increased interest in probiotic supplementation for improving glycaemic control. This review evaluates nine randomized controlled trials that tested the effects of probiotics on glycaemic outcomes including fasting plasma glucose, fasting plasma insulin, haemoglobin A1c, and homeostatic model assessment of insulin resistance among adults with T2DM. Based on the evidence reviewed, multistrain probiotics that contain seven million to 100 billion colony forming units of Lactobacillus acidophilus, Streptococcus thermophilus, Lactobacillus bulgaricus, and/or Bifidobacterium lactis administered for 6 to 12 weeks may be efficacious for improving glycaemic control in adults with T2DM. Further research is needed to understand the role of the gut microbiota and the probiotic dose, medium, and duration of exposure that is most effective for disease management.
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Affiliation(s)
- Kelly A Tiderencel
- Department of Clinical and Preventive Nutrition Sciences, School of Health Professions, Rutgers University, Newark, New Jersey
| | - Deborah A Hutcheon
- Department of Clinical and Preventive Nutrition Sciences, School of Health Professions, Rutgers University, Newark, New Jersey
| | - Jane Ziegler
- Department of Clinical and Preventive Nutrition Sciences, School of Health Professions, Rutgers University, Newark, New Jersey
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193
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Khat‐udomkiri N, Toejing P, Sirilun S, Chaiyasut C, Lailerd N. Antihyperglycemic effect of rice husk derived xylooligosaccharides in high-fat diet and low-dose streptozotocin-induced type 2 diabetic rat model. Food Sci Nutr 2020; 8:428-444. [PMID: 31993169 PMCID: PMC6977422 DOI: 10.1002/fsn3.1327] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 11/13/2019] [Accepted: 11/18/2019] [Indexed: 12/17/2022] Open
Abstract
Rice husk (RH) is an agricultural waste obtained from rice milling process. Our previous study demonstrated the optimized process of extracting xylooligosaccharides (XOS), a prebiotic that can support the growth and activity of beneficial gut microbiota, from RH. Accumulated evidences indicate that the composition of gut microbiota is involved in the progression of insulin resistance and diabetes. This study aims to evaluate the antihyperglycemic effect and putative mechanisms of RH-XOS using a diabetic rat model induced by high-fat diet and streptozotocin injection. Diabetic rats were randomly assigned to receive vehicle (DMC), XOS (DM-XOS), metformin (DMM), and a combination of XOS and metformin (DMM-XOS). An additional group of rats were fed with normal diet plus vehicle (NDC) and normal diet plus XOS (ND-XOS). Supplementation with RH-XOS for 12 weeks successfully decreased the fasting plasma glucose, insulin, leptin, and LPS levels in DM-XOS compared with DMC. Likewise, the insulin-stimulated glucose uptake assessed by in vitro study was significantly enhanced in DM-XOS, DMM, and DMM-XOS. The diminished protein expressions of GLUT4 and pAktSer473 as well as pAMPKThr172 were significantly modulated in DM-XOS, DMM, and DMM-XOS groups. Interestingly, RH-XOS supplementation reversed the changed gut permeability, elevated the number of beneficial bacteria, both Lactobacillus and Bifidobacterium spp., and increased SCFAs production. Taken together, the results confirm the efficacy of RH-XOS in achieving good glycemic control in diabetes by maintenance of gut microbiota and attenuation of endotoxemia. The findings reveal the benefits of RH-XOS and open an opportunity to improve its value by its development as a nutraceutical for diabetes.
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Affiliation(s)
- Nuntawat Khat‐udomkiri
- Innovation Center for Holistic Health, Nutraceuticals and CosmeceuticalsFaculty of PharmacyChiang Mai UniversityChiang MaiThailand
| | - Parichart Toejing
- Department of PhysiologyFaculty of MedicineChiang Mai UniversityChiang MaiThailand
| | - Sasithorn Sirilun
- Innovation Center for Holistic Health, Nutraceuticals and CosmeceuticalsFaculty of PharmacyChiang Mai UniversityChiang MaiThailand
| | - Chaiyavat Chaiyasut
- Innovation Center for Holistic Health, Nutraceuticals and CosmeceuticalsFaculty of PharmacyChiang Mai UniversityChiang MaiThailand
| | - Narissara Lailerd
- Innovation Center for Holistic Health, Nutraceuticals and CosmeceuticalsFaculty of PharmacyChiang Mai UniversityChiang MaiThailand
- Department of PhysiologyFaculty of MedicineChiang Mai UniversityChiang MaiThailand
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194
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Busnelli M, Manzini S, Chiesa G. The Gut Microbiota Affects Host Pathophysiology as an Endocrine Organ: A Focus on Cardiovascular Disease. Nutrients 2019; 12:E79. [PMID: 31892152 PMCID: PMC7019666 DOI: 10.3390/nu12010079] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 12/18/2019] [Accepted: 12/24/2019] [Indexed: 12/12/2022] Open
Abstract
It is widely recognized that the microorganisms inhabiting our gastrointestinal tract-the gut microbiota-deeply affect the pathophysiology of the host. Gut microbiota composition is mostly modulated by diet, and gut microorganisms communicate with the different organs and tissues of the human host by synthesizing hormones and regulating their release. Herein, we will provide an updated review on the most important classes of gut microbiota-derived hormones and their sensing by host receptors, critically discussing their impact on host physiology. Additionally, the debated interplay between microbial hormones and the development of cardiovascular disease will be thoroughly analysed and discussed.
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Affiliation(s)
| | | | - Giulia Chiesa
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, 20133 Milano, Italy;
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195
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Polkowska‐Pruszyńska B, Gerkowicz A, Krasowska D. The gut microbiome alterations in allergic and inflammatory skin diseases – an update. J Eur Acad Dermatol Venereol 2019; 34:455-464. [DOI: 10.1111/jdv.15951] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 08/02/2019] [Indexed: 02/06/2023]
Affiliation(s)
- B. Polkowska‐Pruszyńska
- Department of Dermatology, Venerology and Paediatric Dermatology Medical University of Lublin Lublin Poland
| | - A. Gerkowicz
- Department of Dermatology, Venerology and Paediatric Dermatology Medical University of Lublin Lublin Poland
| | - D. Krasowska
- Department of Dermatology, Venerology and Paediatric Dermatology Medical University of Lublin Lublin Poland
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196
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Hasebe K, Rivera LR, Smith CM, Allnutt T, Crowley T, Nelson TM, Dean OM, McGee SL, Walder K, Gray L. Modulation of high fat diet-induced microbiome changes, but not behaviour, by minocycline. Brain Behav Immun 2019; 82:309-318. [PMID: 31493447 DOI: 10.1016/j.bbi.2019.09.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 08/28/2019] [Accepted: 09/03/2019] [Indexed: 12/21/2022] Open
Abstract
An emerging novel therapeutic agent for major depressive disorder, minocycline, has the potential to influence both gut microbiome and inflammatory status. The present study showed that chronic high fat diet feeding led to changes in both behaviour and the gut microbiome in male mice, without an overt inflammatory response. The diet-induced behavioural changes were characterised as increased immobility in the forced swim test and changes in locomotor activities in the open field test. Minocycline significantly altered the gut microbiome, rendering a community distinctly different to both untreated healthy and diet-affected states. In contrast, minocycline did not reverse high fat diet-induced changes in behaviour.
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Affiliation(s)
- Kyoko Hasebe
- School of Medicine, Centre for Molecular and Medical Research, Deakin University, Geelong, Australia
| | - Leni R Rivera
- School of Medicine, Centre for Molecular and Medical Research, Deakin University, Geelong, Australia
| | - Craig M Smith
- School of Medicine, Centre for Molecular and Medical Research, Deakin University, Geelong, Australia; The Florey Institute of Neuroscience and Mental Health, Parkville, Australia
| | | | - Tamsyn Crowley
- School of Medicine, Centre for Molecular and Medical Research, Deakin University, Geelong, Australia
| | - Tiffanie M Nelson
- Geelong Centre for Emerging Infectious Diseases, Geelong, Victoria 3220, Australia; Deakin University, Geelong, Victoria 3220, Australia
| | - Olivia M Dean
- The Florey Institute of Neuroscience and Mental Health, Parkville, Australia; School of Medicine, IMPACT Strategic Research Centre, Deakin University, Geelong, Australia
| | - Sean L McGee
- School of Medicine, Centre for Molecular and Medical Research, Deakin University, Geelong, Australia
| | - Ken Walder
- School of Medicine, Centre for Molecular and Medical Research, Deakin University, Geelong, Australia
| | - Laura Gray
- School of Medicine, Centre for Molecular and Medical Research, Deakin University, Geelong, Australia; The Florey Institute of Neuroscience and Mental Health, Parkville, Australia.
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197
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Ramin S, Mysz MA, Meyer K, Capistrant B, Lazovich D, Prizment A. A prospective analysis of dietary fiber intake and mental health quality of life in the Iowa Women's Health Study. Maturitas 2019; 131:1-7. [PMID: 31787141 DOI: 10.1016/j.maturitas.2019.10.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 09/24/2019] [Accepted: 10/08/2019] [Indexed: 12/16/2022]
Abstract
OBJECTIVE Recent studies have reported associations between dietary intake and mental health. Dietary fiber is one nutrient that may modulate mental health, specifically depression risk, through the gut microbiome. We prospectively examined the association between dietary fiber intake and mental health-related quality of life (QOL) scores, a proxy for depressive symptoms, in a cohort of 14,129 post-menopausal women in the Iowa Women's Health Study. METHODS Dietary intake was assessed at baseline [1986] using a 127-item food frequency questionnaire. Mental health-related QOL scores were assessed at the follow-up questionnaire [2004] using the Mental Health (MH) component and Mental Health Composite (MCS) scales derived from the SF-36 Health Survey. The association between dietary fiber intake and mean QOL scores was examined using linear regression, with adjustment for age, alcohol intake, energy intake, waist-to-hip ratio, physical activity, smoking status, and education. RESULTS The median dietary fiber intake was 19.0 g/day, ranging from 1.1 to 89.4 g/day. Multivariable-adjusted mean MH scores were higher among those with higher fiber intake (P for trend = 0.02). For MCS score, the association with fiber intake observed in a model adjusted for age and energy intake became insignificant after multivariable adjustment. CONCLUSIONS Our study is one of the first prospective analyses of the association between higher dietary fiber intake and increased MH QOL scores later in life. Given a plausible biological mechanism underlying the association between fiber intake and mental health, additional studies are warranted.
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Affiliation(s)
- Seth Ramin
- University of Minnesota School of Public Health, Division of Epidemiology and Community Health, Minneapolis, MN, United States
| | - Margaret A Mysz
- University of Minnesota School of Public Health, Division of Epidemiology and Community Health, Minneapolis, MN, United States
| | - Katie Meyer
- University of North Carolina, Department of Nutrition and Nutrition Research Institute, Chapel Hill, NC, United States
| | - Benjamin Capistrant
- University of Minnesota School of Public Health, Division of Epidemiology and Community Health, Minneapolis, MN, United States; Universty of Minnesota, Minnesota Population Center, Minneapolis, MN, United States; Smith College, School of Social Work, Northampton, MA, United States
| | - DeAnn Lazovich
- University of Minnesota School of Public Health, Division of Epidemiology and Community Health, Minneapolis, MN, United States; University of Minnesota Masonic Cancer Center, Minneapolis, MN, United States
| | - Anna Prizment
- University of Minnesota School of Public Health, Division of Epidemiology and Community Health, Minneapolis, MN, United States; University of Minnesota Masonic Cancer Center, Minneapolis, MN, United States.
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198
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Martínez Leo EE, Segura Campos MR. Effect of ultra-processed diet on gut microbiota and thus its role in neurodegenerative diseases. Nutrition 2019; 71:110609. [PMID: 31837645 DOI: 10.1016/j.nut.2019.110609] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Revised: 08/06/2019] [Accepted: 09/23/2019] [Indexed: 02/06/2023]
Abstract
The current dietary pattern is characterized by high consumption of ultra-processed foods and lower consumption of fiber and vegetables, environmental factors that are associated directly with the current incidence of chronic metabolic diseases. Diet is an environmental factor that influences the diversity and functionality of the gut microbiota, where dietary changes have a direct action on their homeostasis. The environment created in the gut by ultra-processed foods, a hallmark of the Western diet that are recognized as trigger factors for low-grade systemic inflammatory and oxidative changes, favor the development of neurodegenerative diseases (NDs). From a systematic search, the present review analyzes the relationship and effect of the current feeding pattern, with the dysregulation of the microbiota and its influence on the development of cognitive decline. Because diagnosis of NDs is usually at late stages, this review highlights the importance of a search for stricter public health strategies regarding access to and development of ultra-processed foods.
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Affiliation(s)
- Edwin E Martínez Leo
- Facultad de Ingeniería Química, Universidad Autónoma de Yucatán, Periférico Norte Yucatán, México
| | - Maira R Segura Campos
- Facultad de Ingeniería Química, Universidad Autónoma de Yucatán, Periférico Norte Yucatán, México.
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Metabolic output defines Escherichia coli as a health-promoting microbe against intestinal Pseudomonas aeruginosa. Sci Rep 2019; 9:14463. [PMID: 31595010 PMCID: PMC6783455 DOI: 10.1038/s41598-019-51058-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Accepted: 09/25/2019] [Indexed: 12/15/2022] Open
Abstract
Gut microbiota acts as a barrier against intestinal pathogens, but species-specific protection of the host from infection remains relatively unexplored. Although lactobacilli and bifidobacteria produce beneficial lactic and short-chain fatty acids in the mammalian gut, the significance of intestinal Escherichia coli producing these acids is debatable. Taking a Koch’s postulates approach in reverse, we define Escherichia coli as health-promoting for naturally colonizing the gut of healthy mice and protecting them against intestinal colonization and concomitant mortality by Pseudomonas aeruginosa. Reintroduction of faecal bacteria and E. coli in antibiotic-treated mice establishes a high titre of E. coli in the host intestine and increases defence against P. aeruginosa colonization and mortality. Strikingly, high sugar concentration favours E. coli fermentation to lactic and acetic acid and inhibits P. aeruginosa growth and virulence in aerobic cultures and in a model of aerobic metabolism in flies, while dietary vegetable fats - not carbohydrates or proteins - favour E. coli fermentation and protect the host in the anaerobic mouse gut. Thus E. coli metabolic output is an important indicator of resistance to infection. Our work may also suggest that the lack of antimicrobial bacterial metabolites in mammalian lungs and wounds allows P. aeruginosa to be a formidable microbe at these sites.
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Cabello-Olmo M, Araña M, Radichev I, Smith P, Huarte E, Barajas M. New Insights into Immunotherapy Strategies for Treating Autoimmune Diabetes. Int J Mol Sci 2019; 20:ijms20194789. [PMID: 31561568 PMCID: PMC6801436 DOI: 10.3390/ijms20194789] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 09/18/2019] [Accepted: 09/20/2019] [Indexed: 12/12/2022] Open
Abstract
Type 1 diabetes mellitus (T1D) is an autoimmune illness that affects millions of patients worldwide. The main characteristic of this disease is the destruction of pancreatic insulin-producing beta cells that occurs due to the aberrant activation of different immune effector cells. Currently, T1D is treated by lifelong administration of novel versions of insulin that have been developed recently; however, new approaches that could address the underlying mechanisms responsible for beta cell destruction have been extensively investigated. The strategies based on immunotherapies have recently been incorporated into a panel of existing treatments for T1D, in order to block T-cell responses against beta cell antigens that are very common during the onset and development of T1D. However, a complete preservation of beta cell mass as well as insulin independency is still elusive. As a result, there is no existing T1D targeted immunotherapy able to replace standard insulin administration. Presently, a number of novel therapy strategies are pursuing the goals of beta cell protection and normoglycemia. In the present review we explore the current state of immunotherapy in T1D by highlighting the most important studies in this field, and envision novel strategies that could be used to treat T1D in the future.
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Affiliation(s)
- Miriam Cabello-Olmo
- Biochemistry Area, Health Science Department, Faculty of Health Sciences, Public University of Navarra, 31008 Pamplona, Spain.
| | - Miriam Araña
- Biochemistry Area, Health Science Department, Faculty of Health Sciences, Public University of Navarra, 31008 Pamplona, Spain.
| | - Ilian Radichev
- Diabetes research group at Sanford Research, Sioux Falls, SD 57104, USA.
| | - Paul Smith
- Incyte Corporation, Wilmington, DE 19803, USA.
| | | | - Miguel Barajas
- Biochemistry Area, Health Science Department, Faculty of Health Sciences, Public University of Navarra, 31008 Pamplona, Spain.
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