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Gan L, Zhao Y, Zhang Z, Zhao C, Li J, Jia Q, Shi Y, Wang P, Guo L, Qiao H, Cui Y, Wang J. The impact of high polymerization inulin on body weight reduction in high-fat diet-induced obese mice: correlation with cecal Akkermansia. Front Microbiol 2024; 15:1428308. [PMID: 39268531 PMCID: PMC11392436 DOI: 10.3389/fmicb.2024.1428308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2024] [Accepted: 08/15/2024] [Indexed: 09/15/2024] Open
Abstract
Obesity presents a significant public health challenge, demanding effective dietary interventions. This study employed a high-fat diet-induced obesity mouse model to explore the impacts of inulin with different polymerization degrees on obesity management. Our analysis reveals that high-degree polymerization inulin (HDI) exhibited a significantly higher oil binding capacity and smaller particle size compared to low-degree polymerization inulin (LDI) (p < 0.05). HDI was more effective than LDI in mitigating body weight gain in high-diet induced obese mice, although neither LDI nor HDI affected blood sugar levels when compared to the high-fat diet control group (p < 0.05). Both HDI and LDI administrations reduced liver weight and enhanced brown adipose tissue thermogenesis compared to the high-fat diet induced control group (p < 0.05). Additionally, HDI suppressed hepatic lipogenesis, resulting in a further reduction in liver triglycerides compared to the high-fat diet-induced obese mice (p < 0.05). Notably, HDI improved gut health by enhancing intestinal morphology and modulating gut microbiota structure. HDI administration notably increased the relative abundance of cecal Akkermansia, a gut microbe associated with improved metabolic health, while LDI showed limited efficacy (p < 0.05 and p > 0.05, respectively). These findings underscore the importance of the structural properties of inulin in its potential to combat obesity and highlight the strategic use of inulin with varying polymerization degrees as a promising dietary approach for obesity management, particularly in its influence on gut microbiota composition and hepatic lipid metabolism regulation.
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Affiliation(s)
- Liping Gan
- School of Bioengineering, Henan University of Technology, Zhengzhou, China
| | - Yifeng Zhao
- School of Bioengineering, Henan University of Technology, Zhengzhou, China
| | - Zongbao Zhang
- School of Bioengineering, Henan University of Technology, Zhengzhou, China
| | - Chenkai Zhao
- School of Bioengineering, Henan University of Technology, Zhengzhou, China
| | - Jiake Li
- School of Bioengineering, Henan University of Technology, Zhengzhou, China
| | - Qingyu Jia
- School of Bioengineering, Henan University of Technology, Zhengzhou, China
| | - Yusu Shi
- School of Bioengineering, Henan University of Technology, Zhengzhou, China
| | - Peng Wang
- School of Bioengineering, Henan University of Technology, Zhengzhou, China
| | - Linna Guo
- School of Bioengineering, Henan University of Technology, Zhengzhou, China
| | - Hanzhen Qiao
- School of Bioengineering, Henan University of Technology, Zhengzhou, China
| | - Yaoming Cui
- School of Bioengineering, Henan University of Technology, Zhengzhou, China
| | - Jinrong Wang
- School of Bioengineering, Henan University of Technology, Zhengzhou, China
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Fu H, Chen Z, Teng W, Du Z, Zhang Y, Ye X, Yu Z, Zhang Y, Pi X. Effects of fructooligosaccharides and Saccharomyces boulardii on the compositional structure and metabolism of gut microbiota in students. Microbiol Res 2024; 285:127741. [PMID: 38761487 DOI: 10.1016/j.micres.2024.127741] [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: 03/12/2024] [Revised: 04/21/2024] [Accepted: 04/29/2024] [Indexed: 05/20/2024]
Abstract
Fructooligosaccharides (FOS) are a common prebiotic widely used in functional foods. Meanwhile, Saccharomyces boulardii is a fungal probiotic frequenly used in the clinical treatment of diarrhea. Compared with single use, the combination of prebiotics and probiotics as symbiotics may be more effective in regulating gut microbiota as recently reported in the literature. The present study aimed to investigate the effects of FOS, S. boulardii and their combination on the structure and metabolism of the gut microbiota in healthy primary and secondary school students using an in vitro fermentation model. The results indicated that S. boulardii alone could not effectively regulate the community structure and metabolism of the microbiota. However, both FOS and the combination of FOS and S. boulardii could effectively regulate the microbiota, significantly inhibiting the growth of Escherichia-Shigella and Bacteroides, and controlling the production of the gases including H2S and NH3. In addition, both FOS and the combination could significantly promote the growth of Bifidobacteria and Lactobacillus, lower environmental pH, and enhance several physiological functions related to synthesis and metabolism. Nevertheless, the combination had more unique benefits as it promoted the growth of Lactobacillus, significantly increased CO2 production and enhanced the functional pathways of carbon metabolism and pyruvic acid metabolism. These findings provide guidance for clinical application and a theoretical basis for the development of synbiotic preparations.
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Affiliation(s)
- Hao Fu
- Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China
| | - Zhixian Chen
- National Key Laboratory of Agricultural Microbiology, Angel Yeast Co., Ltd., Yichang 443003, PR China; The Hubei Provincial Key Laboratory of Yeast Function, Angel Yeast Co., Ltd., Yichang 443003, PR China; Yi Chang Engineering and Technology Research Center of Nutrition and Health Food, Angel Yeast Co., Ltd., Yichang 443003, PR China
| | - Weilin Teng
- Department of infectious Disease Control and Prevention, HangZhou Center for Disease Control and Prevention, Hangzhou 310006, PR China
| | - Zhi Du
- Department of Pharmacy, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou 310052, PR China
| | - Yan Zhang
- National Key Laboratory of Agricultural Microbiology, Angel Yeast Co., Ltd., Yichang 443003, PR China; The Hubei Provincial Key Laboratory of Yeast Function, Angel Yeast Co., Ltd., Yichang 443003, PR China; Yi Chang Engineering and Technology Research Center of Nutrition and Health Food, Angel Yeast Co., Ltd., Yichang 443003, PR China
| | - Xiaoli Ye
- Department of Pharmacy, Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child Health, Hangzhou 310052, PR China
| | - Zaichun Yu
- College of Bioengineering, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Yinjun Zhang
- College of Bioengineering, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Xionge Pi
- Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China; Institute of Rural Development, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China.
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3
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Sun Y, Zhou W, Zhu M. Serum Metabolomics Uncovers the Mechanisms of Inulin in Preventing Non-Alcoholic Fatty Liver Disease. Pharmaceuticals (Basel) 2024; 17:895. [PMID: 39065745 PMCID: PMC11279973 DOI: 10.3390/ph17070895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 06/23/2024] [Accepted: 07/02/2024] [Indexed: 07/28/2024] Open
Abstract
Inulin may be a promising therapeutic molecule for treating non-alcoholic fatty liver disease (NAFLD). However, the underlying mechanisms of its therapeutic activity remain unclear. To address this issue, a high-fat-diet-induced NAFLD mouse model was developed and treated with inulin. The NAFLD phenotype was evaluated via histopathological analysis and biochemical parameters, including serum levels of alanine aminotransferase, aspartate aminotransferase, liver triglycerides, etc. A serum metabolomics study was conducted using ultra-performance liquid chromatography coupled with tandem mass spectrometry. The results revealed that inulin mitigated NAFLD symptoms such as histopathological changes and liver cholesterol levels. Through the serum metabolomics study, 347 differential metabolites were identified between the model and control groups, and 139 differential metabolites were identified between the inulin and model groups. Additionally, 48 differential metabolites (such as phosphatidylserine, dihomo-γ-linolenic acid, L-carnitine, and 13-HODE) were identified as candidate targets of inulin and subjected to pathway enrichment analysis. The results revealed that these 48 differential metabolites were enriched in several metabolic pathways such as fatty acid biosynthesis and cardiolipin biosynthesis. Taken together, our results suggest that inulin might attenuate NAFLD partially by modulating 48 differential metabolites and their correlated metabolic pathways, constituting information that might help us find novel therapies for NAFLD.
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Affiliation(s)
- Yunhong Sun
- School of Public Health, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China;
- Institute of Digestive Diseases, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China
| | - Wenjun Zhou
- Institute of Digestive Diseases, Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China
| | - Mingzhe Zhu
- School of Public Health, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China;
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4
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Hou C, Shi H, Xiao J, Song X, Luo Z, Ma X, Shi L, Wei H, Li J. Pomegranate Juice Supplemented with Inulin Modulates Gut Microbiota and Promotes the Production of Microbiota-Associated Metabolites in Overweight/Obese Individuals: A Randomized, Double-Blind, Placebo-Controlled Trial. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:14663-14677. [PMID: 38887904 DOI: 10.1021/acs.jafc.4c00849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
Pomegranate juice (PJ) and inulin have been reported to ameliorate diet-induced metabolic disorders by regulating gut microbiota dysbiosis. However, there was a lack of clinical evidence for the combined effects of PJ and inulin on regulating gut microbiota in individuals with metabolic disorders. A double-blind, parallel, randomized, placebo-controlled trial was conducted, and 68 overweight/obese individuals (25 ≤ BMI ≤ 35 kg/m2) were randomly assigned to receive 200 mL/d PJ, PJ supplemented with inulin, or placebo for 3 weeks. Our results showed that PJ and PJ+inulin did not significantly alter the levels of anthropometric and blood biochemical indicators after 3 weeks of treatment. However, there was an increasingly significant impact from placebo to PJ to PJ+inulin on the composition of gut microbiota. Detailed bacterial abundance analysis further showed that PJ+inulin treatment more profoundly resulted in significant changes in the abundance of gut microbiota at each taxonomic level than PJ. Moreover, PJ+inulin treatment also promoted the production of microbiota-associated short-chain fatty acids and pomegranate polyphenol metabolites, which correlated with the abundance of the bacterial genus. Our results suggested that PJ supplemented with inulin modulates gut microbiota composition and thus promotes the production of microbiota-associated metabolites that exert potential beneficial effects in overweight/obese subjects.
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Affiliation(s)
- Chen Hou
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, China
- University Key Laboratory of Food Processing Byproducts for Advanced Development and High Value Utilization, Shaanxi Normal University, Xi'an 710119, China
| | - Haidan Shi
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, China
- University Key Laboratory of Food Processing Byproducts for Advanced Development and High Value Utilization, Shaanxi Normal University, Xi'an 710119, China
| | - Jingjing Xiao
- Department of Thyroid, Breast and Vascular Surgery, Xijing Hospital, The Air Force Military Medical University, Xi'an, Shaanxi 710032, China
| | - Xiaoyu Song
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, China
- University Key Laboratory of Food Processing Byproducts for Advanced Development and High Value Utilization, Shaanxi Normal University, Xi'an 710119, China
| | - Zhuoting Luo
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, China
- University Key Laboratory of Food Processing Byproducts for Advanced Development and High Value Utilization, Shaanxi Normal University, Xi'an 710119, China
| | - Xing Ma
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, China
- University Key Laboratory of Food Processing Byproducts for Advanced Development and High Value Utilization, Shaanxi Normal University, Xi'an 710119, China
| | - Lin Shi
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, China
- University Key Laboratory of Food Processing Byproducts for Advanced Development and High Value Utilization, Shaanxi Normal University, Xi'an 710119, China
| | - Hongliang Wei
- Department of Thyroid, Breast and Vascular Surgery, Xijing Hospital, The Air Force Military Medical University, Xi'an, Shaanxi 710032, China
| | - Jianke Li
- College of Food Engineering and Nutritional Science, Shaanxi Normal University, Xi'an 710119, China
- University Key Laboratory of Food Processing Byproducts for Advanced Development and High Value Utilization, Shaanxi Normal University, Xi'an 710119, China
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5
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Zhang Y, Zhu L, Zhao M, Jia Y, Li K, Li C. The effects of inulin on solubilizing and improving anti-obesity activity of high polymerization persimmon tannin. Int J Biol Macromol 2024; 270:132232. [PMID: 38734349 DOI: 10.1016/j.ijbiomac.2024.132232] [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: 03/08/2024] [Revised: 04/23/2024] [Accepted: 04/30/2024] [Indexed: 05/13/2024]
Abstract
High polymerization persimmon tannin has been reported to have lipid-lowering effects. Unfortunately, the poor solubility restricts its application. This research aimed to investigate the effect and mechanism of inulin on solubilizing of persimmon tannin. Furthermore, we examined whether the addition of inulin would affect the attenuated obesity effect of persimmon tannin. Transmission electron microscope (TEM), Isothermal titration calorimetry (ITC) and Fourier transform infrared spectroscopy (FT-IR) results demonstrated that inulin formed a gel-like network structure, which enabled the encapsulation of persimmon tannin through hydrophobic and hydrogen bond interactions, thereby inhibiting the self-aggregation of persimmon tannin. The turbidity of the persimmon tannin solution decreased by 56.2 %, while the polyphenol content in the supernatant increased by 60.0 %. Furthermore, biochemical analysis and 16s rRNA gene sequencing technology demonstrated that persimmon tannin had a significant anti-obesity effect and improved intestinal health in HFD-fed mice. Moreover, inulin was found to have a positive effect on enhancing the health benefits of persimmon tannin, including improving hepatic steatosis and gut microbiota dysbiosis. it enhanced the abundance of beneficial core microbes while decreasing the abundance of harmful bacteria. Our findings expand the applications of persimmon tannin in the food and medical sectors.
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Affiliation(s)
- Yajie Zhang
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Environment Correlative Food Science (Huazhong Agricultural University), Ministry of Education, Wuhan 430070, China
| | - Lin Zhu
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Environment Correlative Food Science (Huazhong Agricultural University), Ministry of Education, Wuhan 430070, China
| | - Mengyao Zhao
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Environment Correlative Food Science (Huazhong Agricultural University), Ministry of Education, Wuhan 430070, China
| | - Yangyang Jia
- School of Food Science, Henan Institute of Science and Technology, Xinxiang, Henan 453003, China
| | - Kaikai Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Environment Correlative Food Science (Huazhong Agricultural University), Ministry of Education, Wuhan 430070, China
| | - Chunmei Li
- College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, China; Environment Correlative Food Science (Huazhong Agricultural University), Ministry of Education, Wuhan 430070, China.
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6
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Zuo Q, Park NH, Lee JK, Santaliz-Casiano A, Madak-Erdogan Z. Navigating nonalcoholic fatty liver disease (NAFLD): Exploring the roles of estrogens, pharmacological and medical interventions, and life style. Steroids 2024; 203:109330. [PMID: 37923152 DOI: 10.1016/j.steroids.2023.109330] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 10/28/2023] [Accepted: 10/31/2023] [Indexed: 11/07/2023]
Abstract
The pursuit of studying this subject is driven by the urgency to address the increasing global prevalence of Non-Alcoholic Fatty Liver Disease (NAFLD) and its profound health implications. NAFLD represents a significant public health concern due to its association with metabolic disorders, cardiovascular complications, and the potential progression to more severe conditions like non-alcoholic steatohepatitis (NASH), fibrosis, and cirrhosis. Liver estrogen signaling is important for maintaining liver function, and loss of estrogens increases the likelihood of NAFLD in postmenopausal women. Understanding the multifaceted mechanisms underlying NAFLD pathogenesis, its varied treatment strategies, and their effectiveness is crucial for devising comprehensive and targeted interventions. By unraveling the intricate interplay between genetics, lifestyle, hormonal regulation, and gut microbiota, we can unlock insights into risk stratification, early detection, and personalized therapeutic approaches. Furthermore, investigating the emerging pharmaceutical interventions and dietary modifications offers the potential to revolutionize disease management. This review reinforces the role of collaboration in refining NAFLD comprehension, unveiling novel therapeutic pathways, and ultimately improving patient outcomes for this intricate hepatic condition.
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Affiliation(s)
- Qianying Zuo
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
| | - Nicole Hwajin Park
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
| | - Jenna Kathryn Lee
- Department of Neuroscience, Northwestern University, Evanston, IL 60208, USA
| | - Ashlie Santaliz-Casiano
- Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
| | - Zeynep Madak-Erdogan
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA; Carl R. Woese Institute of Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
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7
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Ayala-García JC, García-Vera AM, Lagunas-Martínez A, Orbe-Orihuela YC, Castañeda-Márquez AC, Díaz-Benítez CE, Bermúdez-Morales VH, Cruz M, Bahena-Román M, Burguete-García AI. Interaction between Akkermansia muciniphila and Diet Is Associated with Proinflammatory Index in School-Aged Children. CHILDREN (BASEL, SWITZERLAND) 2023; 10:1799. [PMID: 38002890 PMCID: PMC10670599 DOI: 10.3390/children10111799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 11/08/2023] [Accepted: 11/09/2023] [Indexed: 11/26/2023]
Abstract
BACKGROUND Imbalance in the intestinal microbiota can lead to chronic low-grade inflammation. Diet may influence this association. In this study, we aimed to evaluate the interaction between Akkermansia muciniphila (A. muciniphila) and dietary patterns using a proinflammatory index. METHODS We conducted a cross-sectional study with school-aged children. We quantified the relative abundance (RA) of A. muciniphila in feces using a polymerase chain reaction. We collected dietary information through employing a food frequency questionnaire and generated dietary patterns using principal component analysis. We generated a proinflammatory index from serum levels of interleukin-6, interleukin-10, tumor necrosis factor alpha, and adiponectin validated by receptor operating characteristic curves. We evaluated the association between A. muciniphila and the proinflammatory index using logistic regression, including an interaction term with dietary patterns. RESULTS We found that children with a low RA of A. muciniphila and a high intake of simple carbohydrates and saturated fats had increased odds of being high on the proinflammatory index. However, when the consumption of this dietary pattern is low, children with a low RA of A. muciniphila had decreased odds of being high on the proinflammatory index. CONCLUSIONS Our results suggest that the simultaneous presence of A. muciniphila and diet have a more significant impact on the presence of being high on the proinflammatory index compared to both factors separately.
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Affiliation(s)
- Juan Carlos Ayala-García
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca 62100, Mexico; (J.C.A.-G.); (A.L.-M.); (Y.C.O.-O.); (C.E.D.-B.); (V.H.B.-M.); (M.B.-R.)
| | - Alba Mariel García-Vera
- Escuela de Salud Pública de México, Instituto Nacional de Salud Pública, Cuernavaca 62100, Mexico;
| | - Alfredo Lagunas-Martínez
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca 62100, Mexico; (J.C.A.-G.); (A.L.-M.); (Y.C.O.-O.); (C.E.D.-B.); (V.H.B.-M.); (M.B.-R.)
| | - Yaneth Citlalli Orbe-Orihuela
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca 62100, Mexico; (J.C.A.-G.); (A.L.-M.); (Y.C.O.-O.); (C.E.D.-B.); (V.H.B.-M.); (M.B.-R.)
| | | | - Cinthya Estefhany Díaz-Benítez
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca 62100, Mexico; (J.C.A.-G.); (A.L.-M.); (Y.C.O.-O.); (C.E.D.-B.); (V.H.B.-M.); (M.B.-R.)
| | - Víctor Hugo Bermúdez-Morales
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca 62100, Mexico; (J.C.A.-G.); (A.L.-M.); (Y.C.O.-O.); (C.E.D.-B.); (V.H.B.-M.); (M.B.-R.)
| | - Miguel Cruz
- Unidad de Investigación Médica en Bioquímica, Centro Médico Nacional Siglo XXI, Ciudad de México 06720, Mexico;
| | - Margarita Bahena-Román
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca 62100, Mexico; (J.C.A.-G.); (A.L.-M.); (Y.C.O.-O.); (C.E.D.-B.); (V.H.B.-M.); (M.B.-R.)
| | - Ana Isabel Burguete-García
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca 62100, Mexico; (J.C.A.-G.); (A.L.-M.); (Y.C.O.-O.); (C.E.D.-B.); (V.H.B.-M.); (M.B.-R.)
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8
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Zhang C, Sui Y, Liu S, Yang M. Molecular mechanisms of metabolic disease-associated hepatic inflammation in non-alcoholic fatty liver disease and non-alcoholic steatohepatitis. EXPLORATION OF DIGESTIVE DISEASES 2023:246-275. [DOI: https:/doi.org/10.37349/edd.2023.00029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Accepted: 08/05/2023] [Indexed: 11/27/2023]
Abstract
Non-alcoholic fatty liver disease (NAFLD) is the leading chronic liver disease worldwide, with a progressive form of non-alcoholic steatohepatitis (NASH). It may progress to advanced liver diseases, including liver fibrosis, cirrhosis, and hepatocellular carcinoma. NAFLD/NASH is a comorbidity of many metabolic disorders such as obesity, insulin resistance, type 2 diabetes, cardiovascular disease, and chronic kidney disease. These metabolic diseases are often accompanied by systemic or extrahepatic inflammation, which plays an important role in the pathogenesis and treatment of NAFLD or NASH. Metabolites, such as short-chain fatty acids, impact the function, inflammation, and death of hepatocytes, the primary parenchymal cells in the liver tissue. Cholangiocytes, the epithelial cells that line the bile ducts, can differentiate into proliferative hepatocytes in chronic liver injury. In addition, hepatic non-parenchymal cells, including liver sinusoidal endothelial cells, hepatic stellate cells, and innate and adaptive immune cells, are involved in liver inflammation. Proteins such as fibroblast growth factors, acetyl-coenzyme A carboxylases, and nuclear factor erythroid 2-related factor 2 are involved in liver metabolism and inflammation, which are potential targets for NASH treatment. This review focuses on the effects of metabolic disease-induced extrahepatic inflammation, liver inflammation, and the cellular and molecular mechanisms of liver metabolism on the development and progression of NAFLD and NASH, as well as the associated treatments.
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Affiliation(s)
- Chunye Zhang
- Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, USA
| | - Yuxiang Sui
- School of Life Science, Shanxi Normal University, Linfen 041004, Shanxi Province, China
| | - Shuai Liu
- The First Affiliated Hospital, Zhejiang University, Hangzhou 310006, Zhejiang Province, China
| | - Ming Yang
- Department of Surgery, University of Missouri, Columbia, MO 65211, USA
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9
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Martinez TM, Wachsmuth HR, Meyer RK, Weninger SN, Lane AI, Kangath A, Schiro G, Laubitz D, Stern JH, Duca FA. Differential effects of plant-based flours on metabolic homeostasis and the gut microbiota in high-fat fed rats. Nutr Metab (Lond) 2023; 20:44. [PMID: 37858106 PMCID: PMC10585811 DOI: 10.1186/s12986-023-00767-8] [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: 10/24/2022] [Accepted: 10/13/2023] [Indexed: 10/21/2023] Open
Abstract
BACKGROUND The gut microbiome is a salient contributor to the development of obesity, and diet is the greatest modifier of the gut microbiome, which highlights the need to better understand how specific diets alter the gut microbiota to impact metabolic disease. Increased dietary fiber intake shifts the gut microbiome and improves energy and glucose homeostasis. Dietary fibers are found in various plant-based flours which vary in fiber composition. However, the comparative efficacy of specific plant-based flours to improve energy homeostasis and the mechanism by which this occurs is not well characterized. METHODS In experiment 1, obese rats were fed a high fat diet (HFD) supplemented with four different plant-based flours for 12 weeks. Barley flour (BF), oat bran (OB), wheat bran (WB), and Hi-maize amylose (HMA) were incorporated into the HFD at 5% or 10% total fiber content and were compared to a HFD control. For experiment 2, lean, chow-fed rats were switched to HFD supplemented with 10% WB or BF to determine the preventative efficacy of flour supplementation. RESULTS In experiment 1, 10% BF and 10% WB reduced body weight and adiposity gain and increased cecal butyrate. Gut microbiota analysis of WB and BF treated rats revealed increases in relative abundance of SCFA-producing bacteria. 10% WB and BF were also efficacious in preventing HFD-induced obesity; 10% WB and BF decreased body weight and adiposity, improved glucose tolerance, and reduced inflammatory markers and lipogenic enzyme expression in liver and adipose tissue. These effects were accompanied by alterations in the gut microbiota including increased relative abundance of Lactobacillus and LachnospiraceaeUCG001, along with increased portal taurodeoxycholic acid (TDCA) in 10% WB and BF rats compared to HFD rats. CONCLUSIONS Therapeutic and preventative supplementation with 10%, but not 5%, WB or BF improves metabolic homeostasis, which is possibly due to gut microbiome-induced alterations. Specifically, these effects are proposed to be due to increased concentrations of intestinal butyrate and circulating TDCA.
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Affiliation(s)
- Taylor M Martinez
- Physiological Sciences Graduate Interdisciplinary Program, University of Arizona, Tucson, AZ, USA
| | - Hallie R Wachsmuth
- Physiological Sciences Graduate Interdisciplinary Program, University of Arizona, Tucson, AZ, USA
| | - Rachel K Meyer
- School of Nutritional Science and Wellness, University of Arizona, Tucson, AZ, USA
| | - Savanna N Weninger
- Physiological Sciences Graduate Interdisciplinary Program, University of Arizona, Tucson, AZ, USA
| | - Adelina I Lane
- Physiological Sciences Graduate Interdisciplinary Program, University of Arizona, Tucson, AZ, USA
| | - Archana Kangath
- School of Animal and Comparative Biomedical Sciences, University of Arizona, ACBS Building, 1117 E Lowell St., Tucson, AZ, 85711, USA
| | - Gabriele Schiro
- The PANDA Core for Genomics and Microbiome Research, Department of Pediatrics, University of Arizona, Tucson, AZ, USA
| | - Daniel Laubitz
- The PANDA Core for Genomics and Microbiome Research, Department of Pediatrics, University of Arizona, Tucson, AZ, USA
| | - Jennifer H Stern
- Division of Endocrinology, University of Arizona College of Medicine, Tucson, AZ, USA
| | - Frank A Duca
- School of Animal and Comparative Biomedical Sciences, University of Arizona, ACBS Building, 1117 E Lowell St., Tucson, AZ, 85711, USA.
- BIO 5 Institute, University of Arizona, Tucson, AZ, USA.
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10
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Flor-Duro A, Olivares M, Sanz Y. Tracking microbiota fibre breakdown to treat NASH. Nat Microbiol 2023; 8:1382-1383. [PMID: 37488258 DOI: 10.1038/s41564-023-01440-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/26/2023]
Affiliation(s)
- Alejandra Flor-Duro
- Microbiome, Nutrition & Health Research Unit, Institute of Agrochemistry and Food Technology, Severo Ochoa Centre of Excellence, National Research Council, Valencia, Spain
| | - Marta Olivares
- Microbiome, Nutrition & Health Research Unit, Institute of Agrochemistry and Food Technology, Severo Ochoa Centre of Excellence, National Research Council, Valencia, Spain
| | - Yolanda Sanz
- Microbiome, Nutrition & Health Research Unit, Institute of Agrochemistry and Food Technology, Severo Ochoa Centre of Excellence, National Research Council, Valencia, Spain.
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11
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Li J, Yang G, Zhang Q, Liu Z, Jiang X, Xin Y. Function of Akkermansia muciniphila in type 2 diabetes and related diseases. Front Microbiol 2023; 14:1172400. [PMID: 37396381 PMCID: PMC10310354 DOI: 10.3389/fmicb.2023.1172400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Accepted: 05/30/2023] [Indexed: 07/04/2023] Open
Abstract
The prevalence of type 2 diabetes (T2D) is increasing worldwide, with many patients developing long-term complications that affect their cardiovascular, urinary, alimentary, and other systems. A growing body of literature has reported the crucial role of gut microbiota in metabolic diseases, one of which, Akkermansia muciniphila, is considered the "next-generation probiotic" for alleviating metabolic disorders and the inflammatory response. Although extensive research has been conducted on A. muciniphila, none has summarized its regulation in T2D. Hence, this review provides an overview of the effects and multifaceted mechanisms of A. muciniphila on T2D and related diseases, including improving metabolism, alleviating inflammation, enhancing intestinal barrier function, and maintaining microbiota homeostasis. Furthermore, this review summarizes dietary strategies for increasing intestinal A. muciniphila abundance and effective gastrointestinal delivery.
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Affiliation(s)
- Jinjie Li
- Jilin Provincial Key Laboratory of Radiation Oncology & Therapy, The First Hospital of Jilin University, Changchun, China
- Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Science, Jilin University, Changchun, China
| | - Ge Yang
- Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Science, Jilin University, Changchun, China
| | - Qihe Zhang
- Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Science, Jilin University, Changchun, China
| | - Zhuo Liu
- Department of Gastrointestinal Colorectal and Anal Surgery, China-Japan Union Hospital of Jilin University, Changchun, China
| | - Xin Jiang
- Jilin Provincial Key Laboratory of Radiation Oncology & Therapy, The First Hospital of Jilin University, Changchun, China
- Department of Radiation Oncology, The First Hospital of Jilin University, Changchun, China
- NHC Key Laboratory of Radiobiology, School of Public Health, Jilin University, Changchun, China
| | - Ying Xin
- Key Laboratory of Pathobiology, Ministry of Education, College of Basic Medical Science, Jilin University, Changchun, China
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12
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Bicknell B, Liebert A, Borody T, Herkes G, McLachlan C, Kiat H. Neurodegenerative and Neurodevelopmental Diseases and the Gut-Brain Axis: The Potential of Therapeutic Targeting of the Microbiome. Int J Mol Sci 2023; 24:9577. [PMID: 37298527 PMCID: PMC10253993 DOI: 10.3390/ijms24119577] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 04/28/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023] Open
Abstract
The human gut microbiome contains the largest number of bacteria in the body and has the potential to greatly influence metabolism, not only locally but also systemically. There is an established link between a healthy, balanced, and diverse microbiome and overall health. When the gut microbiome becomes unbalanced (dysbiosis) through dietary changes, medication use, lifestyle choices, environmental factors, and ageing, this has a profound effect on our health and is linked to many diseases, including lifestyle diseases, metabolic diseases, inflammatory diseases, and neurological diseases. While this link in humans is largely an association of dysbiosis with disease, in animal models, a causative link can be demonstrated. The link between the gut and the brain is particularly important in maintaining brain health, with a strong association between dysbiosis in the gut and neurodegenerative and neurodevelopmental diseases. This link suggests not only that the gut microbiota composition can be used to make an early diagnosis of neurodegenerative and neurodevelopmental diseases but also that modifying the gut microbiome to influence the microbiome-gut-brain axis might present a therapeutic target for diseases that have proved intractable, with the aim of altering the trajectory of neurodegenerative and neurodevelopmental diseases such as Alzheimer's disease, Parkinson's disease, multiple sclerosis, autism spectrum disorder, and attention-deficit hyperactivity disorder, among others. There is also a microbiome-gut-brain link to other potentially reversible neurological diseases, such as migraine, post-operative cognitive dysfunction, and long COVID, which might be considered models of therapy for neurodegenerative disease. The role of traditional methods in altering the microbiome, as well as newer, more novel treatments such as faecal microbiome transplants and photobiomodulation, are discussed.
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Affiliation(s)
- Brian Bicknell
- NICM Health Research Institute, University of Western Sydney, Westmead, NSW 2145, Australia; (A.L.); (H.K.)
| | - Ann Liebert
- NICM Health Research Institute, University of Western Sydney, Westmead, NSW 2145, Australia; (A.L.); (H.K.)
- Faculty of Medicine and Health, University of Sydney, Camperdown, NSW 2006, Australia
- Department of Governance and Research, Sydney Adventist Hospital, Wahroonga, NSW 2076, Australia;
| | - Thomas Borody
- Centre for Digestive Diseases, Five Dock, NSW 2046, Australia;
| | - Geoffrey Herkes
- Department of Governance and Research, Sydney Adventist Hospital, Wahroonga, NSW 2076, Australia;
| | - Craig McLachlan
- Centre for Healthy Futures, Torrens University Australia, Ultimo, NSW 2007, Australia;
| | - Hosen Kiat
- NICM Health Research Institute, University of Western Sydney, Westmead, NSW 2145, Australia; (A.L.); (H.K.)
- Centre for Healthy Futures, Torrens University Australia, Ultimo, NSW 2007, Australia;
- Macquarie Medical School, Macquarie University, Macquarie Park, NSW 2109, Australia
- ANU College of Health and Medicine, Australian National University, Canberra, ACT 2601, Australia
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13
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Yang C, Yang L, Yang Y, Wan M, Xu D, Pan D, Sun G. Effects of flaxseed powder in improving non-alcoholic fatty liver by regulating gut microbiota-bile acids metabolic pathway through FXR/TGR5 mediating. Biomed Pharmacother 2023; 163:114864. [PMID: 37167728 DOI: 10.1016/j.biopha.2023.114864] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/30/2023] [Accepted: 05/08/2023] [Indexed: 05/13/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is gradually becoming one of the most common and health-endangering diseases. Flaxseed powder (FLA) is rich in α-linolenic acid, dietary fiber, lignans, and other active ingredients, which have lipid-lowering and anti-inflammatory effects. Here, we investigated whether the FLA improves host metabolism by gut bacteria modulation and further bile acid modulation in mice fed a high-fat diet. At the end of the experiment, we found that FLA can significantly reduce the body weight, body fat content, and serum TG, LDL-C, and TNF-α levels of mice, and improve liver steatosis. FLA intervention has a significant effect on preventing and regulating the gut flora disturbance caused by HFD. FLA intervention affects bile acid metabolism in the intestine and causes significant changes in functional bile acids, which can play a lipid-lowering and anti-inflammatory role by activating the intestinal Fxr- Fgfr4-Cyp7a1 and Tgr5-Tlr4-Tnfα pathways.
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Affiliation(s)
- Chao Yang
- Department of Public Health and Preventive Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214000, China; Key Laboratory of Environmental Medicine and Engineering of Ministry of Education, and Department of Nutrition and Food Hygiene, School of Public Health, Southeast University, Nanjing 210009, China
| | - Ligang Yang
- Key Laboratory of Environmental Medicine and Engineering of Ministry of Education, and Department of Nutrition and Food Hygiene, School of Public Health, Southeast University, Nanjing 210009, China.
| | - Yafang Yang
- Department of Public Health and Preventive Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214000, China
| | - Min Wan
- Rongxiang Community Health Service Center, Wuxi 214000, China
| | - Dengfeng Xu
- Department of Public Health and Preventive Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi 214000, China; Key Laboratory of Environmental Medicine and Engineering of Ministry of Education, and Department of Nutrition and Food Hygiene, School of Public Health, Southeast University, Nanjing 210009, China
| | - Da Pan
- Key Laboratory of Environmental Medicine and Engineering of Ministry of Education, and Department of Nutrition and Food Hygiene, School of Public Health, Southeast University, Nanjing 210009, China
| | - Guiju Sun
- Key Laboratory of Environmental Medicine and Engineering of Ministry of Education, and Department of Nutrition and Food Hygiene, School of Public Health, Southeast University, Nanjing 210009, China
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14
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Qin YQ, Wang LY, Yang XY, Xu YJ, Fan G, Fan YG, Ren JN, An Q, Li X. Inulin: properties and health benefits. Food Funct 2023; 14:2948-2968. [PMID: 36876591 DOI: 10.1039/d2fo01096h] [Citation(s) in RCA: 26] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Inulin, a soluble dietary fiber, is widely found in more than 36 000 plant species as a reserve polysaccharide. The primary sources of inulin, include Jerusalem artichoke, chicory, onion, garlic, barley, and dahlia, among which Jerusalem artichoke tubers and chicory roots are often used as raw materials for inulin production in the food industry. It is universally acknowledged that inulin as a prebiotic has an outstanding effect on the regulation of intestinal microbiota via stimulating the growth of beneficial bacteria. In addition, inulin also exhibits excellent health benefits in regulating lipid metabolism, weight loss, lowering blood sugar, inhibiting the expression of inflammatory factors, reducing the risk of colon cancer, enhancing mineral absorption, improving constipation, and relieving depression. In this review paper, we attempt to present an exhaustive overview of the function and health benefits of inulin.
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Affiliation(s)
- Yu-Qing Qin
- College of Food Science and Technology, Huazhong Agricultural University, Key Laboratory of Environment Correlative Dietology of Ministry of Education, Wuhan, 430070, China.
| | - Liu-Yan Wang
- College of Food Science and Technology, Huazhong Agricultural University, Key Laboratory of Environment Correlative Dietology of Ministry of Education, Wuhan, 430070, China.
| | - Xin-Yu Yang
- College of Food Science and Technology, Huazhong Agricultural University, Key Laboratory of Environment Correlative Dietology of Ministry of Education, Wuhan, 430070, China.
| | - Yi-Jie Xu
- College of Food Science and Technology, Huazhong Agricultural University, Key Laboratory of Environment Correlative Dietology of Ministry of Education, Wuhan, 430070, China.
| | - Gang Fan
- College of Food Science and Technology, Huazhong Agricultural University, Key Laboratory of Environment Correlative Dietology of Ministry of Education, Wuhan, 430070, China.
| | - Yan-Ge Fan
- Institute of Chemistry Co. Ltd, Henan Academy of Sciences, Zhengzhou 450002, China
| | - Jing-Nan Ren
- College of Food Science and Technology, Huazhong Agricultural University, Key Laboratory of Environment Correlative Dietology of Ministry of Education, Wuhan, 430070, China.
| | - Qi An
- College of Food Science and Technology, Huazhong Agricultural University, Key Laboratory of Environment Correlative Dietology of Ministry of Education, Wuhan, 430070, China.
| | - Xiao Li
- College of Food Science and Technology, Huazhong Agricultural University, Key Laboratory of Environment Correlative Dietology of Ministry of Education, Wuhan, 430070, China.
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15
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Zheng M, Han R, Yuan Y, Xing Y, Zhang W, Sun Z, Liu Y, Li J, Mao T. The role of Akkermansia muciniphila in inflammatory bowel disease: Current knowledge and perspectives. Front Immunol 2023; 13:1089600. [PMID: 36685588 PMCID: PMC9853388 DOI: 10.3389/fimmu.2022.1089600] [Citation(s) in RCA: 40] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 12/20/2022] [Indexed: 01/08/2023] Open
Abstract
Inflammatory bowel diseases, including Crohn's disease and ulcerative colitis, is a chronic relapsing gastrointestinal inflammatory disease mediated by dysregulated immune responses to resident intestinal microbiota. Current conventional approaches including aminosalicylates, corticosteroids, immunosuppressive agents, and biological therapies are focused on reducing intestinal inflammation besides inducing and maintaining disease remission, and managing complications. However, these therapies are not curative and are associated with various limitations, such as drug resistance, low responsiveness and adverse events. Recent accumulated evidence has revealed the involvement of mucin-degrading bacterium Akkermansia muciniphila (A. muciniphila) in the regulation of host barrier function and immune response, and how reduced intestinal colonisation of probiotic A. muciniphila can contribute to the process and development of inflammatory bowel diseases, suggesting that it may be a potential target and promising strategy for the therapy of inflammatory bowel disease. In this review, we summarise the current knowledge of the role of A. muciniphila in IBD, especially focusing on the related mechanisms, as well as the strategies based on supplementation with A. muciniphila, probiotics and prebiotics, natural diets, drugs, and herbs to promote its colonisation in the gut, and holds promise for A. muciniphila-targeted and -based therapies in the treatment of inflammatory bowel disease.
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Affiliation(s)
| | - Ran Han
- Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Yali Yuan
- Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Yunqi Xing
- Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Wenji Zhang
- Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, China
| | | | - Yuyue Liu
- Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Junxiang Li
- Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, China,*Correspondence: Junxiang Li, ; Tangyou Mao,
| | - Tangyou Mao
- Dongfang Hospital, Beijing University of Chinese Medicine, Beijing, China,*Correspondence: Junxiang Li, ; Tangyou Mao,
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16
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Liu M, Shi W, Huang Y, Wu Y, Wu K. Intestinal flora: A new target for traditional Chinese medicine to improve lipid metabolism disorders. Front Pharmacol 2023; 14:1134430. [PMID: 36937840 PMCID: PMC10014879 DOI: 10.3389/fphar.2023.1134430] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 02/13/2023] [Indexed: 03/05/2023] Open
Abstract
Lipid metabolism disorders (LMD) can cause a series of metabolic diseases, including hyperlipidemia, obesity, non-alcoholic fatty liver disease (NAFLD) and atherosclerosis (AS). Its development is caused by more pathogenic factors, among which intestinal flora dysbiosis is considered to be an important pathogenic mechanism of LMD. In recent years, the research on intestinal flora has made great progress, opening up new perspectives on the occurrence and therapeutic effects of diseases. With its complex composition and wide range of targets, traditional Chinese medicine (TCM) is widely used to prevent and treat LMD. This review takes intestinal flora as a target, elaborates on the scientific connotation of TCM in the treatment of LMD, updates the therapeutic thinking of LMD, and provides a reference for clinical diagnosis and treatment.
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Affiliation(s)
- Min Liu
- Department of Gynecology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Wei Shi
- Department of Gynecology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Yefang Huang
- Department of Gynecology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Yeke Wu
- Department of Stomatology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Keming Wu
- Department of Gynecology, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
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Inulin prebiotic dietary supplementation improves metabolic parameters by reducing the Toll-like receptor 4 transmembrane protein gene and interleukin 6 expression in adipose tissue. PHARMANUTRITION 2022. [DOI: 10.1016/j.phanu.2022.100316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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18
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Griffin LE, Radhakrishnan S, Pellizzon MA. Addition of Soluble Fiber in Low-Fat Purified Diets Maintains Cecal and Colonic Morphology, Modulates Bacterial Populations and Predicted Functions, and Improves Glucose Tolerance Compared with Traditional AIN Diets in Male Mice. Curr Dev Nutr 2022; 6:nzac105. [PMID: 36204330 PMCID: PMC9529224 DOI: 10.1093/cdn/nzac105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 05/17/2022] [Accepted: 06/07/2022] [Indexed: 11/13/2022] Open
Abstract
Background Purified diets (PDs) contain refined ingredients with one main nutrient, allowing for greater control relative to grain-based diets (GBDs), which contain unrefined grains and animal byproducts. Traditional PDs like the American Institute of Nutrition (AIN)-76A (76A) and AIN-93G (93G) can negatively impact metabolic and gut health when fed long term, in part due to lower total fiber, no soluble fiber, and higher sucrose content. Objective Two studies were conducted to determine how PDs with reduced sucrose and increased fiber (soluble and insoluble) influence metabolic and gut health in mice compared with traditional AIN PDs or GBDs. Methods In study 1, C57Bl/6N mice (n = 75) consumed a GBD [LabDiet 5002 (5002)], 76A, 93G, or 2 PDs with reduced sucrose and higher fiber for 88 d. Body composition and metabolic parameters were assessed. In study 2, C57Bl/6N mice (n = 54) consumed either 2 GBDs (LabDiet 5001 or 5002) or PDs with different types/levels of fiber for 14 d. Microbiome alterations and predicted functional metagenomic changes were measured. Results The PD with 75 g cellulose and 25 g inulin per 4084 kcals marginally influenced body weight and adiposity, but improved glucose tolerance relative to 93G (P = 0.0131) and 76A (P = 0.0014). Cecal and colonic weights were lower in mice fed cellulose-based PDs compared with those fed GBDs and soluble-fiber PDs. Soluble-fiber PDs reduced alpha diversity and showed similar beta diversity, which differed from cellulose-based PDs and GBDs. Certain genera associated with improved gut health such as Bifidobacteria and Akkermansia were significantly elevated by soluble-fiber PDs (P ≤ 0.01). Metabolic pathways related to carbohydrate and fatty acid metabolism were affected by PDs. Conclusions PDs formulated with lower sucrose and increased fiber content, particularly soluble fiber, blunted elevations in metabolic parameters and favorably impacted the microbiota and metagenome in C57BL/6N mice.
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Differential Effects of Dietary White Meat and Red Meat on NAFLD Progression by Modulating Gut Microbiota and Metabolites in Rats. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:6908934. [PMID: 36035222 PMCID: PMC9410827 DOI: 10.1155/2022/6908934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 07/19/2022] [Indexed: 11/17/2022]
Abstract
Objective. To assess the effects of dietary white meat (grass carp and chicken) and red meat (pork and beef) on metabolic parameters, including the intestinal microbiota and its metabolites (SCFAs and bile acids) in NAFLD rats induced by high-fat diet. Methods. NAFLD rats were randomly assigned to five groups: NAFLD group, grass carp group, chicken group, pork group, and beef group (10 rats in each group), and these rats were fed for 8 weeks using the high-fat diet, grass carp-based diet, chicken-based diet, pork-based diet, and beef-based diet, respectively. At the end of the intervention, NAFLD-related metabolic indexes, intestinal flora, and its metabolites were measured. Results. The grass carp-based diet significantly improved hepatic pathological changes and glycolipid metabolism, and the chicken-based diet only partially improved the metabolic parameters. However, NAFLD progression was observed in the pork group and the beef group. What is more, the white meat-based diet-mediated changes in the enrichment of beneficial bacteria (such as Lactobacillus or Akkermansia), SCFAs, and unconjugated BAs (such as UDCA) and the depletion of pathogenic bacteria (such as Bilophila and Prevotella_9) and conjugated BAs were observed, while the red meat-based diet-induced changes in the enrichment of pathogenic bacteria (Prevotella_9 or Lachnospiraceae_UCG-010) and conjugated BAs and the depletion of SCFAs and unconjugated BAs were found. Conclusion. The dietary white meat and red meat modulating gut microbiota and its metabolites may favor and aggravate NAFLD in rats, respectively.
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