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Martínez-García MÁ, Quintero-Tobar A, de Lope Quiñones S, Insenser M, Fernández-Durán E, Escobar-Morreale HF, Luque-Ramírez M. Obesity and polycystic ovary syndrome influence on intestinal permeability at fasting, and modify the effect of diverse macronutrients on the gut barrier. Food Res Int 2024; 186:114338. [PMID: 38729719 DOI: 10.1016/j.foodres.2024.114338] [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: 09/20/2023] [Revised: 04/11/2024] [Accepted: 04/16/2024] [Indexed: 05/12/2024]
Abstract
Women with the extremely prevalent polycystic ovary syndromegather multiple cardiovascular risk factors and chronic subclinical inflammation. Interactions between diet, adiposity, and gut microbiota modulate intestinal permeabilityand bacterial product translocation, and may contribute to the chronic inflammation process associated with the polycystic ovary syndrome. In the present study, we aimed to address the effects of obesity, functional hyperandrogenism, and diverse oral macronutrients on intestinal permeabilityby measuring circulating markers of gut barrier dysfunction and endotoxemia. Participants included 17 non-hyperandrogenic control women, 17 women with polycystic ovary syndrome, and 19 men that were submitted to glucose, lipid, and protein oral loads. Lipopolysaccharide-binding protein, plasma soluble CD14, succinate, zonulin family peptide, and glucagon-like peptide-2 were determined at fasting and after oral challenges. Macronutrient challenges induced diverse changes on circulating intestinal permeabilitybiomarkers in the acute postprancial period, with lipids and proteins showing the most unfavorable and favorable effects, respectively. Particularly, lipopolysaccharide-binding protein, zonulin family peptide, and glucagon-like peptide-2 responses were deregulated by the presence of obesity after glucose and lipid challenges. Obese subjects showed higher fasting intestinal permeabilitybiomarkers levels than non-obese individuals, except for plasma soluble CD14. The polycystic ovary syndromeexacerbated the effect of obesity further increasing fasting glucagon-like peptide-2, lipopolysaccharide-binding protein, and succinate concentrations. We observed specific interactions of the polycystic ovary syndromewith obesity in the postprandial response of succinate, zonulin family peptide, and glucagon-like peptide-2. In summary, obesity and polycystic ovary syndromemodify the effect of diverse macronutrients on the gut barrier, and alsoinfluence intestinal permeabilityat fasting,contributing to the morbidity of functional hyperandrogenism by inducing endotoxemia and subclinical chronic inflammation.
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Affiliation(s)
- M Ángeles Martínez-García
- Diabetes, Obesity and Human Reproduction Research Group, Department of Endocrinology & Nutrition, Hospital Universitario Ramón y Cajal & Universidad de Alcalá & Instituto Ramón y Cajal de Investigación Sanitaria IRYCIS & Centro de Investigación Biomédica en Red Diabetes y Enfermedades Metabólicas Asociadas CIBERDEM, Madrid, Spain
| | - Alejandra Quintero-Tobar
- Diabetes, Obesity and Human Reproduction Research Group, Department of Endocrinology & Nutrition, Hospital Universitario Ramón y Cajal & Universidad de Alcalá & Instituto Ramón y Cajal de Investigación Sanitaria IRYCIS & Centro de Investigación Biomédica en Red Diabetes y Enfermedades Metabólicas Asociadas CIBERDEM, Madrid, Spain
| | - Sara de Lope Quiñones
- Diabetes, Obesity and Human Reproduction Research Group, Department of Endocrinology & Nutrition, Hospital Universitario Ramón y Cajal & Universidad de Alcalá & Instituto Ramón y Cajal de Investigación Sanitaria IRYCIS & Centro de Investigación Biomédica en Red Diabetes y Enfermedades Metabólicas Asociadas CIBERDEM, Madrid, Spain
| | - María Insenser
- Diabetes, Obesity and Human Reproduction Research Group, Department of Endocrinology & Nutrition, Hospital Universitario Ramón y Cajal & Universidad de Alcalá & Instituto Ramón y Cajal de Investigación Sanitaria IRYCIS & Centro de Investigación Biomédica en Red Diabetes y Enfermedades Metabólicas Asociadas CIBERDEM, Madrid, Spain
| | - Elena Fernández-Durán
- Diabetes, Obesity and Human Reproduction Research Group, Department of Endocrinology & Nutrition, Hospital Universitario Ramón y Cajal & Universidad de Alcalá & Instituto Ramón y Cajal de Investigación Sanitaria IRYCIS & Centro de Investigación Biomédica en Red Diabetes y Enfermedades Metabólicas Asociadas CIBERDEM, Madrid, Spain
| | - Héctor Francisco Escobar-Morreale
- Diabetes, Obesity and Human Reproduction Research Group, Department of Endocrinology & Nutrition, Hospital Universitario Ramón y Cajal & Universidad de Alcalá & Instituto Ramón y Cajal de Investigación Sanitaria IRYCIS & Centro de Investigación Biomédica en Red Diabetes y Enfermedades Metabólicas Asociadas CIBERDEM, Madrid, Spain
| | - Manuel Luque-Ramírez
- Diabetes, Obesity and Human Reproduction Research Group, Department of Endocrinology & Nutrition, Hospital Universitario Ramón y Cajal & Universidad de Alcalá & Instituto Ramón y Cajal de Investigación Sanitaria IRYCIS & Centro de Investigación Biomédica en Red Diabetes y Enfermedades Metabólicas Asociadas CIBERDEM, Madrid, Spain.
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Hall WL, Alkoblan A, Gibson PS, D'Annibale M, Coekaerts A, Bauer M, Bruce JH, Lecomte B, Penhoat A, Laugerette F, Michalski MC, Salt LJ, Wilde PJ, Berry SE. Postprandial lipid and vascular responses following consumption of a commercially-relevant interesterified palmitic acid-rich spread in comparison to functionally-equivalent non-interesterified spread and spreadable butter: a randomised controlled trial in healthy adults. Food Funct 2024; 15:2733-2750. [PMID: 38380649 PMCID: PMC10911404 DOI: 10.1039/d3fo05324e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Accepted: 02/14/2024] [Indexed: 02/22/2024]
Abstract
Background: Interesterification is an industrial processing technique used widely where hard fats are essential for functionality and consumer acceptability, e.g. margarines and lower fat spreads. Objective: The aim of this study was to compare acute cardiovascular effects of functionally equivalent spreads (similar solid fat content) made with interesterified (IE) or non-IE palm-based fats, or spreadable butter. Methods: A randomised, controlled, 4-armed crossover, double-blind study (25 men, 25 women; 35-75 years; healthy; mean BMI 24.5, SD 3.8), compared effects of mixed nutrient meals containing 50 g fat from functionally equivalent products [IE spread, non-IE spread and spreadable butter (SB), with rapeseed oil (RO) as a reference treatment: with 16.7%, 27.9%, 19.3% and 4% palmitic acid, respectively] on 8 h postprandial changes in plasma triacylglycerol (TAG) and endothelial dysfunction (flow-mediated dilatation; FMD). Circulating reactive oxygen species (estimated using a neutrophil oxidative burst assay), glucose, insulin, NEFA, lipoprotein particle profiles, inflammatory markers (glycoprotein acetylation (Glyc-A) and IL-6), and biomarkers of endotoxemia were measured. Results: Postprandial plasma TAG concentrations after test meals were similar. However following RO versus the 3 spreads, there were significantly higher postprandial apolipoprotein B concentrations, and small HDL and LDL particle concentrations, and lower postprandial extra-large, large, and medium HDL particle concentrations, as well as smaller average HDL and LDL particle sizes. There were no differences following IE compared to the other spreads. Postprandial FMD% did not decrease after high-fat test meals, and there were no differences between treatments. Postprandial serum IL-6 increased similarly after test meals, but RO provoked a greater increase in postprandial concentrations of glycoprotein acetyls (GlycA), as well as 8 h sCD14, an endotoxemia marker. All other postprandial outcomes were not different between treatments. Conclusions: In healthy adults, a commercially-available IE-based spread did not evoke a different postprandial triacylglycerol, lipoprotein subclass, oxidative stress, inflammatory or endotoxemic response to functionally-equivalent, but compositionally-distinct alternative spreads. Clinical trial registry number: NCT03438084 (https://ClinicalTrials.gov).
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Affiliation(s)
- Wendy L Hall
- Department of Nutritional Sciences, School of Life Course and Population Sciences, Faculty of Life Sciences and Medicine, King's College London, Franklin Wilkins Building, Stamford St., London, UK.
| | - Aseel Alkoblan
- Department of Nutritional Sciences, School of Life Course and Population Sciences, Faculty of Life Sciences and Medicine, King's College London, Franklin Wilkins Building, Stamford St., London, UK.
- College of Applied Medical Sciences, King Saud bin Abdulaziz University for Health Sciences, Riyadh, Saudi Arabia
- King Abdullah International Medical Research Center, Riyadh, Saudi Arabia
| | - Philippa S Gibson
- Department of Nutritional Sciences, School of Life Course and Population Sciences, Faculty of Life Sciences and Medicine, King's College London, Franklin Wilkins Building, Stamford St., London, UK.
| | - Maria D'Annibale
- Department of Nutritional Sciences, School of Life Course and Population Sciences, Faculty of Life Sciences and Medicine, King's College London, Franklin Wilkins Building, Stamford St., London, UK.
| | - Astrid Coekaerts
- Department of Nutritional Sciences, School of Life Course and Population Sciences, Faculty of Life Sciences and Medicine, King's College London, Franklin Wilkins Building, Stamford St., London, UK.
| | - Mathilde Bauer
- Department of Nutritional Sciences, School of Life Course and Population Sciences, Faculty of Life Sciences and Medicine, King's College London, Franklin Wilkins Building, Stamford St., London, UK.
| | | | - Beryle Lecomte
- CarMeN Laboratory INRAE, INSERM U1060, INRAE UMR1397, University of Lyon, France
| | - Armelle Penhoat
- CarMeN Laboratory INRAE, INSERM U1060, INRAE UMR1397, University of Lyon, France
| | - Fabienne Laugerette
- CarMeN Laboratory INRAE, INSERM U1060, INRAE UMR1397, University of Lyon, France
| | | | - Louise J Salt
- Food Innovation and Health Programme, Quadram Institute Bioscience, UK
| | - Peter J Wilde
- Food Innovation and Health Programme, Quadram Institute Bioscience, UK
| | - Sarah E Berry
- Department of Nutritional Sciences, School of Life Course and Population Sciences, Faculty of Life Sciences and Medicine, King's College London, Franklin Wilkins Building, Stamford St., London, UK.
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Mogilevski T, Rosella S, Nguyen A, Fitzpatrick J, Parker F, Halmos EP, Gibson PR. Characterisation of biomarkers of intestinal barrier function in response to a high fat/high carbohydrate meal and corticotropin releasing hormone. PLoS One 2024; 19:e0294918. [PMID: 38408050 PMCID: PMC10896497 DOI: 10.1371/journal.pone.0294918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 11/08/2023] [Indexed: 02/28/2024] Open
Abstract
BACKGROUND Variation of circulating concentrations of putative biomarkers of intestinal barrier function over the day and after acute physiological interventions are poorly documented on humans. This study aimed to examine the stability and pharmacokinetics of changes in plasma concentrations of intestinal Fatty-acid -binding -protein (IFABP), Lipopolysaccharide-binging-protein (LBP), soluble CD14, and Syndecan-1 after acute stress and high fat-high-carbohydrate meal. METHODS In a single-blinded, cross-over, randomised study, healthy volunteers received on separate days corticotropin-releasing hormone (CRH, 100 μg) or normal saline (as placebo) intravenously in random order, then a HFHC meal. Participants were allowed low caloric food. Markers of intestinal barrier function were measured at set timed intervals from 30 minutes before to 24 hours after interventions. RESULTS 10 participants (50% female) completed all three arms of the study. IFABP decreased by median 3.6 (IQR 1.4-10)% from -30 minutes to zero time (p = 0.001) and further reduced by 25 (20-52)% at 24 hours (p = 0.01) on the low caloric diet, but did not change in response to the meal. Syndecan-1, LBP and sCD14 were stable over a 24-hour period and not affected acutely by food intake. LBP levels 2 hours after CRH reduced by 0.61 (-0.95 to 0.05) μg/ml compared with 0.16 (-0.3 to 0.5) μg/ml post placebo injection (p = 0.05), but other markers did not change. CONCLUSION Concentrations of IFABP, but not other markers, are unstable over 24 hours and should be measured fasting. A HFHC meal does not change intestinal permeability. Transient reduction of LPB after CRH confirms acute barrier dysfunction during stress.
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Affiliation(s)
- Tamara Mogilevski
- Department of Gastroenterology, Central Clinical School, Monash University and Alfred Health, Melbourne, Australia
| | - Sam Rosella
- Department of Gastroenterology, Central Clinical School, Monash University and Alfred Health, Melbourne, Australia
| | - Anke Nguyen
- Department of Gastroenterology, Central Clinical School, Monash University and Alfred Health, Melbourne, Australia
| | - Jessica Fitzpatrick
- Department of Gastroenterology, Central Clinical School, Monash University and Alfred Health, Melbourne, Australia
| | - Francis Parker
- Department of Gastroenterology, Central Clinical School, Monash University and Alfred Health, Melbourne, Australia
| | - Emma P. Halmos
- Department of Gastroenterology, Central Clinical School, Monash University and Alfred Health, Melbourne, Australia
| | - Peter R. Gibson
- Department of Gastroenterology, Central Clinical School, Monash University and Alfred Health, Melbourne, Australia
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Rohrhofer J, Hauser L, Lettenmaier L, Lutz L, Koidl L, Gentile SA, Ret D, Stingl M, Untersmayr E. Immunological Patient Stratification in Myalgic Encephalomyelitis/Chronic Fatigue Syndrome. J Clin Med 2024; 13:275. [PMID: 38202282 PMCID: PMC10779792 DOI: 10.3390/jcm13010275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 12/28/2023] [Accepted: 12/29/2023] [Indexed: 01/12/2024] Open
Abstract
Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a complex disease characterized by profound fatigue, post-exertional malaise (PEM), and neurocognitive dysfunction. Immune dysregulation and gastrointestinal symptoms are commonly observed in ME/CFS patients. Despite affecting approximately 0.89% of the general population, the underlying pathophysiological mechanisms remain poorly understood. This study aimed to elucidate the relationship between immunological characteristics and intestinal barrier function in ME/CFS patients. ME/CFS patients were stratified into two groups based on their immune competence. After documentation of detailed medical records, serum and plasma samples were collected for the assessment of inflammatory immune mediators and biomarkers for intestinal barrier integrity by ELISA. We found reduced complement protein C4a levels in immunodeficient ME/CFS patients suggesting a subgroup-specific innate immune dysregulation. ME/CFS patients without immunodeficiencies exhibit a mucosal barrier leakage, as indicated by elevated levels of Lipopolysaccharide-binding protein (LBP). Stratifying ME/CFS patients based on immune competence enabled the distinction of two subgroups with different pathophysiological patterns. The study highlights the importance of emphasizing precise patient stratification in ME/CFS, particularly in the context of defining suitable treatment strategies. Given the substantial health and socioeconomic burden associated with ME/CFS, urgent attention and research efforts are needed to define causative treatment approaches.
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Affiliation(s)
- Johanna Rohrhofer
- Institute of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, 1090 Vienna, Austria; (J.R.); (L.K.); (S.A.G.); (D.R.)
| | - Lisa Hauser
- Institute of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, 1090 Vienna, Austria; (J.R.); (L.K.); (S.A.G.); (D.R.)
| | - Lisa Lettenmaier
- Institute of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, 1090 Vienna, Austria; (J.R.); (L.K.); (S.A.G.); (D.R.)
| | - Lena Lutz
- Institute of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, 1090 Vienna, Austria; (J.R.); (L.K.); (S.A.G.); (D.R.)
| | - Larissa Koidl
- Institute of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, 1090 Vienna, Austria; (J.R.); (L.K.); (S.A.G.); (D.R.)
| | - Salvatore Alessio Gentile
- Institute of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, 1090 Vienna, Austria; (J.R.); (L.K.); (S.A.G.); (D.R.)
| | - Davide Ret
- Institute of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, 1090 Vienna, Austria; (J.R.); (L.K.); (S.A.G.); (D.R.)
- Division of Macromolecular Chemistry, Institute of Applied Synthetic Chemistry, Vienna University of Technology, 1060 Vienna, Austria
| | | | - Eva Untersmayr
- Institute of Pathophysiology and Allergy Research, Center for Pathophysiology, Infectiology and Immunology, Medical University of Vienna, 1090 Vienna, Austria; (J.R.); (L.K.); (S.A.G.); (D.R.)
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Metz CN, Xue X, Chatterjee PK, Adelson RP, Roth J, Brines M, Tracey KJ, Gregersen PK, Pavlov VA. Increased plasma lipopolysaccharide-binding protein and altered inflammatory mediators in overweight women suggest a state of subclinical endotoxemia. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.18.540879. [PMID: 37293028 PMCID: PMC10245681 DOI: 10.1101/2023.05.18.540879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Chronic low-grade inflammation has been recognized as an underlying event linking obesity to cardiovascular disease (CVD). However, inflammatory alterations in individuals who are overweight remain understudied. To provide insight, we determined the levels of key circulating biomarkers of endotoxemia and inflammation, including lipopolysaccharide-binding protein (LBP), CRP, IL-6, leptin, and adiponectin in adult female subjects (n=40) who were lean or overweight and had high cholesterol and/or high blood pressure - two important conventional risk factors for CVD. Plasma levels of LBP were significantly higher in the overweight group compared with the lean group (P=0.005). The levels of CRP were also significantly higher in overweight subjects (P=0.01), as were IL-6 (P=0.02) and leptin (P=0.002), pro-inflammatory mediators associated with cardiovascular risk. Levels of adiponectin, an adipokine with anti-inflammatory and anti-atherogenic functions, were significantly lower in the overweight group (P=0.002). The leptin/adiponectin ratio, a preferential atherogenic marker was significantly increased in women who are overweight (P=0.02). LBP, CRP, leptin, and adiponectin levels significantly correlated with BMI, but not with age and there was a significant correlation between LBP and IL-6 levels. These results reveal the presence of subclinical endotoxemia and a pro-inflammatory state in overweight women and are of interest for further studies with the goal for improved understanding of cardiovascular health risks in women.
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Affiliation(s)
- Christine N. Metz
- The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030, USA
- Zucker School of Medicine at Hofstra/Northwell-Hofstra University, Hempstead, NY 11550, USA
| | - Xiangying Xue
- The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030, USA
| | - Prodyot K Chatterjee
- The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030, USA
| | - Robert P. Adelson
- The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030, USA
| | - Jesse Roth
- The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030, USA
- Zucker School of Medicine at Hofstra/Northwell-Hofstra University, Hempstead, NY 11550, USA
| | - Michael Brines
- The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030, USA
| | - Kevin J. Tracey
- The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030, USA
- Zucker School of Medicine at Hofstra/Northwell-Hofstra University, Hempstead, NY 11550, USA
| | - Peter K. Gregersen
- The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030, USA
- Zucker School of Medicine at Hofstra/Northwell-Hofstra University, Hempstead, NY 11550, USA
| | - Valentin A. Pavlov
- The Feinstein Institutes for Medical Research, Northwell Health, Manhasset, NY 11030, USA
- Zucker School of Medicine at Hofstra/Northwell-Hofstra University, Hempstead, NY 11550, USA
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Metz CN, Xue X, Chatterjee PK, Adelson RP, Brines M, Tracey KJ, Gregersen PK, Pavlov VA. Increased plasma lipopolysaccharide-binding protein and altered inflammatory mediators in overweight women suggest a state of subclinical endotoxemia. RESEARCH SQUARE 2023:rs.3.rs-3356683. [PMID: 37841878 PMCID: PMC10571637 DOI: 10.21203/rs.3.rs-3356683/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2023]
Abstract
Chronic low-grade inflammation has been recognized as an underlying event linking obesity to cardiovascular disease (CVD). However, inflammatory alterations in individuals who are overweight remain understudied. To provide insight, we determined the levels of key circulating biomarkers of endotoxemia and inflammation, including lipopolysaccharide-binding protein (LBP), CRP, IL-6, leptin, and adiponectin in adult female subjects (n = 20) who were lean or overweight and had high cholesterol and/or high blood pressure - two important conventional risk factors for CVD. Plasma levels of LBP (a recognized marker of metabolic endotoxemia in obesity) were significantly higher in the overweight group compared with the lean group (P = 0.005). The levels of CRP, a general marker of inflammation, were also significantly higher in overweight subjects (P = 0.01), as were IL-6 (P = 0.02) and leptin (P = 0.002), pro-inflammatory mediators associated with cardiovascular risk. Levels of adiponectin, an adipokine with anti-inflammatory and anti-atherogenic functions, were significantly lower in the overweight group (P = 0.002). The leptin/adiponectin ratio, a preferential atherogenic marker was significantly increased in women who are overweight (P = 0.02). LBP, CRP, leptin, and adiponectin levels significantly correlated with BMI, but not with age. These results reveal the presence of subclinical endotoxemia and a pro-inflammatory state in overweight women and are of interest for further studies with the goal for improved understanding of women's cardiovascular health.
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Jamar G, Pisani LP. Inflammatory crosstalk between saturated fatty acids and gut microbiota-white adipose tissue axis. Eur J Nutr 2023; 62:1077-1091. [PMID: 36484808 DOI: 10.1007/s00394-022-03062-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Accepted: 11/23/2022] [Indexed: 12/14/2022]
Abstract
PURPOSE High-fat diets have different metabolic responses via gut dysbiosis. In this review, we discuss the complex interaction between the intake of long- and medium-chain saturated fatty acids (SFAs), gut microbiota, and white adipose tissue (WAT) dysfunction, particularly focusing on the type of fat. RESULTS The evidence for the impact of dietary SFAs on the gut microbiota-WAT axis has been mostly derived from in vitro and animal models, but there is now also evidence emerging from human studies. Most current reports show that, in response to high long- and medium-chain SFA diets, WAT functions are altered and can be modulated from microbial metabolites in several manners; and it appears to be also modified under conditions of obesity. SFAs overconsumption can reduce bacterial content and disrupt the gut environment. Both long- and medium-chain SFAs may contribute to proinflammatory cytokines release and TLR4 cascade signaling, either by regulation of endotoxemia markers or myristoylated protein. Palmitic and stearic acids have pathological effects on the intestinal epithelium, microbes, and inflammatory and lipogenic WAT profiles. While myristic and lauric acids display somewhat controversial outcomes, from probiotic effects and contribution to weight loss to cardiometabolic alterations from WAT inflammation. CONCLUSION Identifying an interference of distinct types of SFA in the binomial gut microbiota-WAT may elucidate essential mechanisms of metabolic endotoxemia, which may be the key to triggering obesity, innovating the therapeutic tools for this disease.
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Affiliation(s)
- Giovana Jamar
- Post-Graduate Program in Nutrition, Federal University of São Paulo-UNIFESP, São Paulo, SP, Brazil
- Department of Biosciences, Institute of Health and Society, Laboratory of Nutrition and Endocrine Physiology, Federal University of São Paulo-UNIFESP, Rua Silva Jardim, 136/311, Vila Mathias, Santos, SP, 11015-020, Brazil
| | - Luciana Pellegrini Pisani
- Post-Graduate Program in Nutrition, Federal University of São Paulo-UNIFESP, São Paulo, SP, Brazil.
- Department of Biosciences, Institute of Health and Society, Laboratory of Nutrition and Endocrine Physiology, Federal University of São Paulo-UNIFESP, Rua Silva Jardim, 136/311, Vila Mathias, Santos, SP, 11015-020, Brazil.
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Blesl A, Stadlbauer V. The Gut-Liver Axis in Cholestatic Liver Diseases. Nutrients 2021; 13:nu13031018. [PMID: 33801133 PMCID: PMC8004151 DOI: 10.3390/nu13031018] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/12/2021] [Accepted: 03/18/2021] [Indexed: 12/12/2022] Open
Abstract
The gut-liver axis describes the physiological interplay between the gut and the liver and has important implications for the maintenance of health. Disruptions of this equilibrium are an important factor in the evolution and progression of many liver diseases. The composition of the gut microbiome, the gut barrier, bacterial translocation, and bile acid metabolism are the key features of this cycle. Chronic cholestatic liver diseases include primary sclerosing cholangitis, the generic term secondary sclerosing cholangitis implying the disease secondary sclerosing cholangitis in critically ill patients and primary biliary cirrhosis. Pathophysiology of these diseases is not fully understood but seems to be multifactorial. Knowledge about the alterations of the gut-liver axis influencing the pathogenesis and the outcome of these diseases has considerably increased. Therefore, this review aims to describe the function of the healthy gut-liver axis and to sum up the pathological changes in these cholestatic liver diseases. The review compromises the actual level of knowledge about the gut microbiome (including the mycobiome and the virome), the gut barrier and the consequences of increased gut permeability, the effects of bacterial translocation, and the influence of bile acid composition and pool size in chronic cholestatic liver diseases. Furthermore, therapeutic implications and future scientific objectives are outlined.
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Affiliation(s)
- Andreas Blesl
- Division for Gastroenterology and Hepatology, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria;
- Correspondence:
| | - Vanessa Stadlbauer
- Division for Gastroenterology and Hepatology, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria;
- Center for Biomarker Research in Medicine (CBmed), 8010 Graz, Austria
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