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Hernández-Martín M, Bocanegra A, Garcimartín A, Issa JÁ, Redondo-Castillejo R, Macho-González A, Benedí J, Sánchez Muniz FJ, López-Oliva ME. Analysis of immunohistomorphological changes in the colonic mucosa in a high-saturated fat and high-cholesterol fed streptozotocin/nicotinamide diabetic rat model. Methods Cell Biol 2024; 185:165-195. [PMID: 38556447 DOI: 10.1016/bs.mcb.2024.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/02/2024]
Abstract
The mucosal surface of gastrointestinal tract is lined with epithelial cells that establish an effective barrier between the lumen and internal environment through intercellular junctions, preventing the passage of potentially harmful substances. The "intestinal barrier function" consist of a defensive system that prevent the passage of antigens, toxins, and microbial products, while maintains the correct development of the epithelial barrier, the immune system and the acquisition of tolerance toward dietary antigens and intestinal microbiota. Intestinal morphology changes subsequent to nutritional variations, stress, aging or diseases, which can also affect the composition of the microbiota, altering the homeostasis of the intestine. A growing body of evidence suggests that alterations in intestinal barrier function favor the development of exaggerated immune responses, leading to metabolic endotoxemia, which seems to be the origin of many chronic metabolic diseases such as type 2 diabetes mellitus (T2DM). Although the mechanisms are still unknown, the interaction between dietary patterns, gut microbiota, intestinal mucosa, and metabolic inflammation seems to be a key factor for the development of T2DM, among other diseases. This chapter details the different techniques that allow evaluating the morphological and molecular alterations that lead of the intestinal barrier dysfunction in a T2DM experimental model. To induce both diabetic metabolic disturbances and gut barrier disruption, Wistar rats were fed a high-saturated fat and high-cholesterol diet and received a single dose of streptozotocin/nicotinamide. This animal model may contribute to clarify the understanding of the role of intestinal barrier dysfunction on the late-stage T2DM etiology.
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Affiliation(s)
- Marina Hernández-Martín
- Departmental Section of Physiology, Pharmacy School, Complutense University of Madrid, Madrid, Spain; AFUSAN Group, Sanitary Research Institute of the San Carlos Clinical Hospital (IdISSC), Madrid, Spain
| | - Aránzazu Bocanegra
- Department of Pharmacology, Pharmacy School, Complutense University of Madrid, Madrid, Spain; AFUSAN Group, Sanitary Research Institute of the San Carlos Clinical Hospital (IdISSC), Madrid, Spain
| | - Alba Garcimartín
- Department of Pharmacology, Pharmacy School, Complutense University of Madrid, Madrid, Spain; AFUSAN Group, Sanitary Research Institute of the San Carlos Clinical Hospital (IdISSC), Madrid, Spain
| | - Jousef Ángel Issa
- Departmental Section of Physiology, Pharmacy School, Complutense University of Madrid, Madrid, Spain
| | - Rocío Redondo-Castillejo
- Department of Pharmacology, Pharmacy School, Complutense University of Madrid, Madrid, Spain; AFUSAN Group, Sanitary Research Institute of the San Carlos Clinical Hospital (IdISSC), Madrid, Spain
| | - Adrián Macho-González
- AFUSAN Group, Sanitary Research Institute of the San Carlos Clinical Hospital (IdISSC), Madrid, Spain; Department of Nutrition, Pharmacy School, Complutense University of Madrid, Madrid, Spain
| | - Juana Benedí
- Department of Pharmacology, Pharmacy School, Complutense University of Madrid, Madrid, Spain; AFUSAN Group, Sanitary Research Institute of the San Carlos Clinical Hospital (IdISSC), Madrid, Spain
| | - Francisco José Sánchez Muniz
- AFUSAN Group, Sanitary Research Institute of the San Carlos Clinical Hospital (IdISSC), Madrid, Spain; Department of Nutrition, Pharmacy School, Complutense University of Madrid, Madrid, Spain
| | - María Elvira López-Oliva
- Departmental Section of Physiology, Pharmacy School, Complutense University of Madrid, Madrid, Spain; AFUSAN Group, Sanitary Research Institute of the San Carlos Clinical Hospital (IdISSC), Madrid, Spain.
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Xu R, Cao JW, Lv HL, Geng Y, Guo MY. Polyethylene microplastics induced gut microbiota dysbiosis leading to liver injury via the TLR2/NF-κB/NLRP3 pathway in mice. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 917:170518. [PMID: 38286276 DOI: 10.1016/j.scitotenv.2024.170518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 01/24/2024] [Accepted: 01/26/2024] [Indexed: 01/31/2024]
Abstract
Microplastics (MPs) are ubiquitous environmental contaminants that have negative impacts on health and safety. The gut microbiota plays multiple roles as a newly discovered virtual metabolic organ. The objective of this study was to investigate the potential of MPs to cause liver injury by disrupting the balance of gut microbiota. The results indicated that exposure to MPs resulted in liver damage and disrupted the homeostasis of gut microbiota. MPs significantly reduced the liver organ coefficient, leading to liver cell injury and impaired function. Additionally, there was an increase in the expression of fibril-related proteins, which positively correlated with MPs concentration. Furthermore, MPs increased the relative abundances of Desulfovibrio, Clostridia, Enterorhabdus, Bacteroides, and Gemella while decreasing the abundance of Dubosoella. Different concentrations of MPs exhibited varying effects on specific bacterial groups, however, both concentrations resulted in an increase in pathogenic bacteria and a decrease in beneficial bacteria, as well as alterations in microbial structure. Moreover, MPs induced oxidative stress, inflammation, apoptosis and necrosis in liver cells. The study found that MPs disrupted gut microbiota homeostasis and activated TLR2/NF-κB/NLRP3 pathway in the liver, providing a new insight into the mechanism underlying MPs-induced liver injury. These findings serve as a warning regarding environmental pollution caused by MPs.
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Affiliation(s)
- Ran Xu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Jing-Wen Cao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Hong-Li Lv
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Yuan Geng
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China
| | - Meng-Yao Guo
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, PR China.
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3
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MAFLD and Celiac Disease in Children. Int J Mol Sci 2023; 24:ijms24021764. [PMID: 36675276 PMCID: PMC9866925 DOI: 10.3390/ijms24021764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/13/2023] [Accepted: 01/14/2023] [Indexed: 01/18/2023] Open
Abstract
Celiac disease (CD) is an immune-mediated systemic disorder elicited by the ingestion of gluten whose clinical presentation ranges from the asymptomatic form to clinical patterns characterized by multiple systemic involvement. Although CD is a disease more frequently diagnosed in patients with symptoms of malabsorption such as diarrhea, steatorrhea, weight loss, or failure to thrive, the raised rate of overweight and obesity among general pediatric and adult populations has increased the possibility to diagnose celiac disease in obese patients as well. Consequently, it is not difficult to also find obesity-related disorders in patients with CD, including "metabolic associated fatty liver disease" (MAFLD). The exact mechanisms linking these two conditions are not yet known. The going assumption is that a gluten-free diet (GFD) plays a pivotal role in determining an altered metabolic profile because of the elevated content of sugars, proteins, saturated fats, and complex carbohydrates, and the higher glycemic index of gluten-free products than gluten-contained foods, predisposing individuals to the development of insulin resistance. However, recent evidence supports the hypothesis that alterations in one of the components of the so-called "gut-liver axis" might contribute to the increased afflux of toxic substances to the liver triggering the liver fat accumulation and to the subsequent hepatocellular damage. The aim of this paper was to describe the actual knowledge about the factors implicated in the pathogenesis of hepatic steatosis in pediatric patients with CD. The presented review allows us to conclude that the serological evaluations for CD with anti-transglutaminase antibodies, should be a part of the general workup in the asymptomatic patients with "non-alcoholic fatty liver disease" (NAFLD) when metabolic risk factors are not evident, and in the patients with steatohepatitis when other causes of liver disease are excluded.
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Costa MADC, Dias Moreira LDP, Duarte VDS, Cardoso RR, de São José VPB, da Silva BP, Grancieri M, Corich V, Giacomini A, Bressan J, Martino HSD, de Barros FAR. Kombuchas from Green and Black Tea Modulate the Gut Microbiota and Improve the Intestinal Health of Wistar Rats Fed a High-Fat High-Fructose Diet. Nutrients 2022; 14:5234. [PMID: 36558393 PMCID: PMC9787585 DOI: 10.3390/nu14245234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 11/29/2022] [Accepted: 11/30/2022] [Indexed: 12/14/2022] Open
Abstract
The Western diet can negatively affect the gut microbiota and is associated with metabolic disorders. Kombucha, a tea fermented by a symbiotic culture of bacteria and yeast (SCOBY), is known for its bioactive properties and has become popular in the last years. In this study, we evaluated the effects of regular kombucha consumption on the gut microbiota and on outcomes related to the intestinal health of Wistar rats fed a high-fat high-fructose diet. After eight weeks receiving a standard diet (AIN-93M) (n = 10) or a high-fat and high-fructose diet (HFHF) (n = 30) to induce metabolic disorders, the animals were subdivided into four groups: AIN-93M (n = 10); HFHF (n = 10); GTK (HFHF + green tea kombucha (n = 10); and BTK (HFHF + black tea kombucha; n = 10) for 10 weeks. Although body composition did not differ among the groups, the HFHF diet was associated with metabolic alterations, and stimulated the growth of gram-negative bacteria such as Proteobacteria and Bacteroides. Kombucha ingestion could somewhat modulate the gut microbiota, attenuating the effects of a Western diet by increasing propionate production and favoring the growth of beneficial bacteria, such as Adlercreutzia in the GTK group. Our results suggest that regular kombucha consumption may be beneficial to intestinal health, which can be mostly attributed to its high content and diversity of phenolic compounds.
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Affiliation(s)
| | - Luiza de Paula Dias Moreira
- Department of Agronomy, Food Natural Resources, Animals, and Environment (DAFNAE), Università degli Studi di Padova, Via dell’Università 16, 35020 Legnaro, PD, Italy
| | - Vinícius da Silva Duarte
- Faculty of Chemistry, Biotechnology, and Food Science, The Norwegian University of Life Sciences, P.O. Box 5003, 1432 Ås, Norway
| | - Rodrigo Rezende Cardoso
- Department of Food Technology, Universidade Federal de Viçosa, Avenida Peter Henry Rolfs, s/n, Viçosa 36570-900, MG, Brazil
| | | | - Bárbara Pereira da Silva
- Department of Nutrition and Health, Universidade Federal de Viçosa, Avenida Peter Henry Rolfs, s/n, Viçosa 36570-000, MG, Brazil
| | - Mariana Grancieri
- Department of Nutrition and Health, Universidade Federal de Viçosa, Avenida Peter Henry Rolfs, s/n, Viçosa 36570-000, MG, Brazil
| | - Viviana Corich
- Department of Agronomy, Food Natural Resources, Animals, and Environment (DAFNAE), Università degli Studi di Padova, Via dell’Università 16, 35020 Legnaro, PD, Italy
| | - Alessio Giacomini
- Department of Agronomy, Food Natural Resources, Animals, and Environment (DAFNAE), Università degli Studi di Padova, Via dell’Università 16, 35020 Legnaro, PD, Italy
| | - Josefina Bressan
- Department of Nutrition and Health, Universidade Federal de Viçosa, Avenida Peter Henry Rolfs, s/n, Viçosa 36570-000, MG, Brazil
| | - Hércia Stampini Duarte Martino
- Department of Nutrition and Health, Universidade Federal de Viçosa, Avenida Peter Henry Rolfs, s/n, Viçosa 36570-000, MG, Brazil
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Khanmohammadi S, Kuchay MS. Toll-like receptors and metabolic (dysfunction)-associated fatty liver disease. Pharmacol Res 2022; 185:106507. [DOI: 10.1016/j.phrs.2022.106507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 10/05/2022] [Accepted: 10/10/2022] [Indexed: 10/31/2022]
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Traditional Chinese Medicine Formula Jian Pi Tiao Gan Yin Reduces Obesity in Mice by Modulating the Gut Microbiota and Fecal Metabolism. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:9727889. [PMID: 35979004 PMCID: PMC9377893 DOI: 10.1155/2022/9727889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 07/10/2022] [Accepted: 07/18/2022] [Indexed: 11/17/2022]
Abstract
The current study employed the high-fat diet (HFD) induced murine model to assess the relationship between the effect of Jian Pi Tiao Gan Yin (JPTGY) and the alterations of gut microbiota and fecal metabolism. C57BL/6 mice were used to establish an animal model of obesity via HFD induce. Serum biochemical indicators of lipid metabolism were used to evaluate the pharmacodynamics of JPTGY in obese mice. Bacterial communities and metabolites in the feces specimens from the controls, the Group HFD, and the JPTGY-exposed corpulency group were studied by 16s rDNA genetic sequence in combination with liquid chromatography-mass spectrometry (LC-MS) based untargeted fecal metabolomics techniques. Results revealed that JPTGY significantly decreased the levels of total cholesterol (TC), triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), and elevated high-density lipoprotein cholesterol (HDL-C). Moreover, JPTGY could up-regulate the abundance and diversity of fecal microbiota, which was characterized by the higher phylum of proteobacteria. Consistently, at the genus levels, JPTGY supplementation induced enrichments in Lachnospiraceae NK4A136 group, Oscillibacter, Turicibacter, Clostridium sensu stricto 1, and Intestinimonas, which were intimately related to 14 pivotal fecal metabolins in respond to JPTGY therapy were determined. What is more, metabolomics further analyses show that the therapeutic effect of JPTGY for obesity involves linoleic acid (LA) metabolism paths, alpha-linolenic acid (ALA) metabolism paths, glycerophospholipid metabolism paths, arachidonic acid (AA) metabolism paths, and pyrimidine metabolism paths, which implied the potential mechanism of JPTGY in treating obesity. It was concluded that the linking of corpulency phenotypes with intestinal flora and fecal metabolins unveils the latent causal link of JPTGY in the treatment of hyperlipidemia and obesity.
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Zhao W, Guo M, Feng J, Gu Z, Zhao J, Zhang H, Wang G, Chen W. Myristica fragrans Extract Regulates Gut Microbes and Metabolites to Attenuate Hepatic Inflammation and Lipid Metabolism Disorders via the AhR-FAS and NF-κB Signaling Pathways in Mice with Non-Alcoholic Fatty Liver Disease. Nutrients 2022; 14:nu14091699. [PMID: 35565666 PMCID: PMC9104743 DOI: 10.3390/nu14091699] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 04/05/2022] [Accepted: 04/13/2022] [Indexed: 12/13/2022] Open
Abstract
Recent studies have shown that non-alcoholic fatty liver disease (NAFLD) is closely related to the gut microbiome. Myristica fragrans is widely used as a traditional seasoning and has a therapeutic effect on gastrointestinal diseases. Although previous studies have shown that M. fragrans extracts have anti-obesity and anti-diabetes effects in mice fed a high-fat diet, few studies have determined the active components or the corresponding mechanism in vivo. In this study, for the first time, an M. fragrans extract (MFE) was shown to be a prebiotic that regulates gut microbes and metabolites in mice fed a high-fat diet. Bioinformatics, network pharmacology, microbiome, and metabolomics analyses were used to analyze the nutrient–target pathway interactions in mice with NAFLD. The National Center for Biotechnology Information Gene Expression Omnibus database was used to analyze NAFLD-related clinical data sets to predict potential targets. The drug database and disease database were then integrated to perform microbiome and metabolomics analyses to predict the target pathways. The concentrations of inflammatory factors in the serum and liver, such as interleukin-6 and tumor necrosis factor-α, were downregulated by MFE. We also found that the hepatic concentrations of low-density lipoprotein cholesterol, total cholesterol, and triglycerides were decreased after MFE treatment. Inhibition of the nuclear factor kappa B (NF-κB) pathway and downregulation of the fatty acid synthase (FAS)-sterol regulatory element-binding protein 1c pathway resulted in the regulation of inflammation and lipid metabolism by activating tryptophan metabolite–mediated aryl hydrocarbon receptors (AhR). In summary, MFE effectively attenuated inflammation and lipid metabolism disorders in mice with NAFLD through the NF-κB and AhR–FAS pathways.
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Affiliation(s)
- Wenyu Zhao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (W.Z.); (M.G.); (Z.G.); (J.Z.); (H.Z.); (W.C.)
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Min Guo
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (W.Z.); (M.G.); (Z.G.); (J.Z.); (H.Z.); (W.C.)
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Jun Feng
- Department of Ultrasound, Affiliated Wuxi No. 2 People’s Hospital of Nanjing Medical University, Wuxi 214122, China
- Correspondence: (J.F.); (G.W.)
| | - Zhennan Gu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (W.Z.); (M.G.); (Z.G.); (J.Z.); (H.Z.); (W.C.)
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Jianxin Zhao
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (W.Z.); (M.G.); (Z.G.); (J.Z.); (H.Z.); (W.C.)
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Yangzhou Institute of Food Biotechnology, Jiangnan University, Yangzhou 225004, China
| | - Hao Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (W.Z.); (M.G.); (Z.G.); (J.Z.); (H.Z.); (W.C.)
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Yangzhou Institute of Food Biotechnology, Jiangnan University, Yangzhou 225004, China
- National Engineering Research Center for Functional Food, Jiangnan University, Wuxi 214122, China
- Wuxi Translational Medicine Research Center and Jiangsu Translational Medicine Research Institute Wuxi Branch, Wuxi 214122, China
| | - Gang Wang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (W.Z.); (M.G.); (Z.G.); (J.Z.); (H.Z.); (W.C.)
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- Yangzhou Institute of Food Biotechnology, Jiangnan University, Yangzhou 225004, China
- Correspondence: (J.F.); (G.W.)
| | - Wei Chen
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi 214122, China; (W.Z.); (M.G.); (Z.G.); (J.Z.); (H.Z.); (W.C.)
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
- National Engineering Research Center for Functional Food, Jiangnan University, Wuxi 214122, China
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8
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High fructose diet: A risk factor for immune system dysregulation. Hum Immunol 2022; 83:538-546. [DOI: 10.1016/j.humimm.2022.03.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 03/05/2022] [Accepted: 03/19/2022] [Indexed: 12/15/2022]
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9
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Nozu T, Okumura T. Pathophysiological Commonality Between Irritable Bowel Syndrome and Metabolic Syndrome: Role of Corticotropin-releasing Factor-Toll-like Receptor 4-Proinflammatory Cytokine Signaling. J Neurogastroenterol Motil 2022; 28:173-184. [PMID: 35189599 PMCID: PMC8978123 DOI: 10.5056/jnm21002] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 08/26/2021] [Accepted: 10/11/2021] [Indexed: 11/20/2022] Open
Abstract
Irritable bowel syndrome (IBS) displays chronic abdominal pain with altered defecation. Most of the patients develop visceral hypersensitivity possibly resulting from impaired gut barrier and altered gut microbiota. We previously demonstrated that colonic hyperpermeability with visceral hypersensitivity in animal IBS models, which is mediated via corticotropin-releasing factor (CRF)-Toll-like receptor 4 (TLR4)-proinflammatory cytokine signaling. CRF impairs gut barrier via TLR4. Leaky gut induces bacterial translocation resulting in dysbiosis, and increases lipopolysaccharide (LPS). Activation of TLR4 by LPS increases the production of proinflammatory cytokines, which activate visceral sensory neurons to induce visceral hypersensitivity. LPS also activates CRF receptors to further increase gut permeability. Metabolic syndrome (MS) is a cluster of cardiovascular risk factors, including insulin resistance, obesity, dyslipidemia, and hypertension, and recently several researchers suggest the possibility that impaired gut barrier and dysbiosis with low-grade systemic inflammation are involved in MS. Moreover, TLR4-proinflammatory cytokine contributes to the development of insulin resistance and obesity. Thus, the existence of pathophysiological commonality between IBS and MS is expected. This review discusses the potential mechanisms of IBS and MS with reference to gut barrier and microbiota, and explores the possibility of existence of pathophysiological link between these diseases with a focus on CRF, TLR4, and proinflammatory cytokine signaling. We also review epidemiological data supporting this possibility, and discuss the potential of therapeutic application of the drugs used for MS to IBS treatment. This notion may pave the way for exploring novel therapeutic approaches for these disorders.
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Affiliation(s)
- Tsukasa Nozu
- Department of Regional Medicine and Education, Asahikawa Medical University, Asahikawa, Hokkaido, Japan.,Center for Medical Education, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
| | - Toshikatsu Okumura
- Division of Gastroenterology and Hematology/Oncology, Department of Medicine, Asahikawa Medical University, Asahikawa, Hokkaido, Japan.,Department of General Medicine, Asahikawa Medical University, Asahikawa, Hokkaido, Japan
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10
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Raffaele M, Kovacovicova K, Biagini T, Lo Re O, Frohlich J, Giallongo S, Nhan JD, Giannone AG, Cabibi D, Ivanov M, Tonchev AB, Mistrik M, Lacey M, Dzubak P, Gurska S, Hajduch M, Bartek J, Mazza T, Micale V, Curran SP, Vinciguerra M. Nociceptin/orphanin FQ opioid receptor (NOP) selective ligand MCOPPB links anxiolytic and senolytic effects. GeroScience 2022; 44:463-483. [PMID: 34820764 PMCID: PMC8612119 DOI: 10.1007/s11357-021-00487-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Accepted: 11/05/2021] [Indexed: 01/18/2023] Open
Abstract
Accumulation of senescent cells may drive age-associated alterations and pathologies. Senolytics are promising therapeutics that can preferentially eliminate senescent cells. Here, we performed a high-throughput automatized screening (HTS) of the commercial LOPAC®Pfizer library on aphidicolin-induced senescent human fibroblasts, to identify novel senolytics. We discovered the nociceptin receptor FQ opioid receptor (NOP) selective ligand 1-[1-(1-methylcyclooctyl)-4-piperidinyl]-2-[(3R)-3-piperidinyl]-1H-benzimidazole (MCOPPB, a compound previously studied as potential anxiolytic) as the best scoring hit. The ability of MCOPPB to eliminate senescent cells in in vitro models was further tested in mice and in C. elegans. MCOPPB reduced the senescence cell burden in peripheral tissues but not in the central nervous system. Mice and worms exposed to MCOPPB also exhibited locomotion and lipid storage changes. Mechanistically, MCOPPB treatment activated transcriptional networks involved in the immune responses to external stressors, implicating Toll-like receptors (TLRs). Our study uncovers MCOPPB as a NOP ligand that, apart from anxiolytic effects, also shows tissue-specific senolytic effects.
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Affiliation(s)
- Marco Raffaele
- International Clinical Research Center, St. Anne's University Hospital, Brno, Czech Republic
| | - Kristina Kovacovicova
- International Clinical Research Center, St. Anne's University Hospital, Brno, Czech Republic
- Psychogenics Inc, Tarrytown, NY, USA
| | - Tommaso Biagini
- Laboratory of Bioinformatics, Fondazione IRCCS Casa Sollievo Della Sofferenza, San Giovanni Rotondo, Italy
| | - Oriana Lo Re
- International Clinical Research Center, St. Anne's University Hospital, Brno, Czech Republic
- Department of Translational Stem Cell Biology, Research Institute of the Medical University of Varna, Varna, Bulgaria
| | - Jan Frohlich
- International Clinical Research Center, St. Anne's University Hospital, Brno, Czech Republic
| | - Sebastiano Giallongo
- International Clinical Research Center, St. Anne's University Hospital, Brno, Czech Republic
- Department of Biology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - James D Nhan
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
- Department of Molecular and Computational Biology, Arts, and Sciences, Dornsife College of Letters, University of Southern California, Los Angeles, CA, USA
| | - Antonino Giulio Giannone
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Pathologic Anatomy Unit-University of Palermo, Palermo, Italy
| | - Daniela Cabibi
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, Pathologic Anatomy Unit-University of Palermo, Palermo, Italy
| | - Martin Ivanov
- Department of Anatomy and Cell Biology, Research Institute of the Medical University of Varna, Varna, Bulgaria
| | - Anton B Tonchev
- Department of Translational Stem Cell Biology, Research Institute of the Medical University of Varna, Varna, Bulgaria
- Department of Anatomy and Cell Biology, Research Institute of the Medical University of Varna, Varna, Bulgaria
| | - Martin Mistrik
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Matthew Lacey
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Petr Dzubak
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Sona Gurska
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Marian Hajduch
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Jiri Bartek
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
- Genome Integrity Unit, Danish Cancer Society Research Center, Copenhagen, Denmark
- Division of Genome Biology, Department of Medical Biochemistry and Biophysics, Science for Life Laboratory, Karolinska Institute, Stockholm, Sweden
| | - Tommaso Mazza
- Laboratory of Bioinformatics, Fondazione IRCCS Casa Sollievo Della Sofferenza, San Giovanni Rotondo, Italy
| | - Vincenzo Micale
- Department of Biomedical and Biotechnological Sciences, University of Catania, Catania, Italy
| | - Sean P Curran
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA, USA
- Department of Molecular and Computational Biology, Arts, and Sciences, Dornsife College of Letters, University of Southern California, Los Angeles, CA, USA
- Norris Comprehensive Cancer Center, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Manlio Vinciguerra
- International Clinical Research Center, St. Anne's University Hospital, Brno, Czech Republic.
- Department of Translational Stem Cell Biology, Research Institute of the Medical University of Varna, Varna, Bulgaria.
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11
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The effect of toll-like receptor ligands on energy metabolism and myokine expression and secretion in cultured human skeletal muscle cells. Sci Rep 2021; 11:24219. [PMID: 34930972 PMCID: PMC8688447 DOI: 10.1038/s41598-021-03730-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 12/09/2021] [Indexed: 12/25/2022] Open
Abstract
Skeletal muscle plays an important role in glycaemic control and metabolic homeostasis, making it a tissue of interest with respect to type 2 diabetes mellitus. The aim of the present study was to determine if ligands of Toll-like receptors (TLRs) could have an impact on energy metabolism and myokine expression and secretion in cultured human skeletal muscle cells. The myotubes expressed mRNA for TLRs 1–6. TLR3, TLR4, TLR5 and TLR6 ligands (TLRLs) increased glucose metabolism. Furthermore, TLR4L and TLR5L increased oleic acid metabolism. The metabolic effects of TLRLs were not evident until after at least 24 h pre-incubation of the cells and here the metabolic effects were more evident for the metabolism of glucose than oleic acid, with a shift towards effects on oleic acid metabolism after chronic exposure (168 h). However, the stimulatory effect of TLRLs on myokine expression and secretion was detected after only 6 h, where TLR3-6L stimulated secretion of interleukin-6 (IL-6). TLR5L also increased secretion of interleukin-8 (IL-8), while TLR6L also increased secretion of granulocyte–macrophage colony stimulating factor (GM-CSF). Pre-incubation of the myotubes with IL-6 for 24 h increased oleic acid oxidation but had no effect on glucose metabolism. Thus IL-6 did not mimic all the metabolic effects of the TLRLs, implying metabolic effects beyond the actions of this myokine.
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Ghanavati M, Nasrollahzadeh J. A calorie-restricted diet enriched with tree nuts and peanuts reduces the expression of CX3CR1 in peripheral blood mononuclear cells in patients with coronary artery disease. INT J VITAM NUTR RES 2021. [PMID: 34794330 DOI: 10.1024/0300-9831/a000738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Background: The modification of the gut microbiome has been proposed to alter immune response which is a key driver in low-grade inflammation as well as metabolic markers. This study was conducted to determine the effects of a low-calorie diet with and without nuts on some gut bacterial abundance, metabolic markers, and gene expression in peripheral blood mononuclear cells (PBMCs) in stable coronary artery disease patients with overweight or obesity. Methods: Overweight or obese patients with stable coronary artery disease of both genders were randomly allocated to a nut-free calorie-restricted diet as 25% of energy deficit (CRD) or a CRD enriched with 39-60 gr/d of mixed nuts (CRDEN) for 8 weeks (32 patients in CRD and 35 patients in CRDEN). Mixed nuts consisted of equal amounts of unsalted pistachios, almonds, and peanuts. Microbiota analysis was performed by quantitative real-time polymerase chain reaction method on feces collected before and after the intervention, using primers targeting 16S ribosomal DNA of 4 different bacterial genera, including Bacteroides, Prevotella, Bifidobacterium, and Lactobacillus. We examined the plasma concentrations of glucose, insulin, adiponectin as well as expression of toll-like receptor-4 (TLR4) and fractalkine receptor (CX3CR1) in PBMCs. Results: A significant reduction in expression of CX3CR1 (p=0.04) and a tendency to lower expression of TLR4 in PBMCs (p=0.06) was observed in the CRDEN group at the end of the study compared to the CRD group. The abundance of fecal Prevotella also tended to increase in CRDEN compared to the CRD group (p=0.06). Plasma insulin and adiponectin had no significant changes. There was a positive correlation between fecal Prevotella abundance and plasma adiponectin at baseline (r=0.315, p=0.015) and the end of the study (r=0.380, p=0.003). Conclusion: Our results suggest that the inclusion of mixed tree nuts and peanuts in a low-calorie diet for 8 weeks led to a lower CX3CR expression in PBMCs in a cohort of overweight or obese patients with stable CAD. This finding provides another beneficial effect of diet supplemented with nuts on factors associated with inflammation. Trial registration: this clinical study has been registered at the clinical trial registration center (clinicaltrial.gov): NCT04078919 on September 6, 2019.
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Affiliation(s)
- Matin Ghanavati
- National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Javad Nasrollahzadeh
- National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Lu CC, Wei RX, Deng DH, Luo ZY, Abdulai M, Liu HH, Kang B, Hu SQ, Li L, Xu HY, Hu JW, Wei SH, Han CC. Effect of different types of sugar on gut physiology and microbiota in overfed goose. Poult Sci 2021; 100:101208. [PMID: 34102480 PMCID: PMC8187246 DOI: 10.1016/j.psj.2021.101208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 04/02/2021] [Accepted: 04/11/2021] [Indexed: 01/11/2023] Open
Abstract
To explored the difference of goose fatty liver formation induced-by different types of sugar from the intestinal physiology and the gut microflora, an integrated analysis of intestinal physiology and gut microbiota metagenomes was performed using samples collected from the geese including the normal-feeding geese and the overfed geese which were overfed with maize flour or overfeeding dietary supplementation with 10% sugar (glucose, fructose or sucrose, respectively), respectively. The results showed that the foie gras weight of the fructose group and the sucrose group was heavier (P < 0.05) than other groups. Compared with the control group, the ileum weight was significantly higher (P < 0.01), and the cecum weight was significantly lower in the sugar treatment groups (P < 0.001). Compared with the control group, the ratio of villi height to crypt depth in the fructose group was the highest in jejunum (P < 0.05); the trypsin activity of the ileum was higher in the fructose group and the sucrose group (P < 0.05). At the phylum level, Firmicutes, Proteobacteria and Bacteroidetes were the main intestinal flora of geese; and the abundance of Firmicutes in the jejunum was higher in the sugar treatment groups than that of the maize flour group. At the genus level, the abundance of Lactobacillus in the jejunum was higher (P < 0.05) in the sugar treatment groups than that of the maize flour group. In conclusion, forced-feeding diet supplementation with sugar induced stronger digestion and absorption capacity, increased the abundance of Firmicutes and Bacteroidetes and the abundance of Lactobacillus (especially fructose and sucrose) in the gut. So, the fructose and sucrose had higher induction on hepatic steatosis in goose fatty liver formation.
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Affiliation(s)
- C C Lu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, P.R. China
| | - R X Wei
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, P.R. China
| | - D H Deng
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, P.R. China
| | - Z Y Luo
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, P.R. China
| | - M Abdulai
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, P.R. China
| | - H H Liu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, P.R. China
| | - B Kang
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, P.R. China
| | - S Q Hu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, P.R. China
| | - L Li
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, P.R. China
| | - H Y Xu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, P.R. China
| | - J W Hu
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, P.R. China
| | - S H Wei
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, P.R. China
| | - C C Han
- Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu, Sichuan, 611130, P.R. China.
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Jadhav K, Cohen TS. Can You Trust Your Gut? Implicating a Disrupted Intestinal Microbiome in the Progression of NAFLD/NASH. Front Endocrinol (Lausanne) 2020; 11:592157. [PMID: 33193105 PMCID: PMC7641624 DOI: 10.3389/fendo.2020.592157] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 09/28/2020] [Indexed: 02/06/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is a spectrum of disorders, ranging from fatty liver to a more insulin resistant, inflammatory and fibrotic state collectively termed non-alcoholic steatohepatitis (NASH). In the United States, 30%-40% of the adult population has fatty liver and 3%-12% has NASH, making it a major public health concern. Consumption of diets high in fat, obesity and Type II diabetes (T2D) are well-established risk factors; however, there is a growing body of literature suggesting a role for the gut microbiome in the development and progression of NAFLD. The gut microbiota is separated from the body by a monolayer of intestinal epithelial cells (IECs) that line the small intestine and colon. The IEC layer is exposed to luminal contents, participates in selective uptake of nutrients and acts as a barrier to passive paracellular permeability of luminal contents through the expression of tight junctions (TJs) between adjacent IECs. A dysbiotic gut microbiome also leads to decreased gut barrier function by disrupting TJs and the gut vascular barrier (GVB), thus exposing the liver to microbial endotoxins. These endotoxins activate hepatic Toll-like receptors (TLRs), further promoting the progression of fatty liver to a more inflammatory and fibrotic NASH phenotype. This review will summarize major findings pertaining to aforementioned gut-liver interactions and its role in the pathophysiology of NAFLD.
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Affiliation(s)
| | - Taylor S. Cohen
- Microbiome Discovery, Microbial Sciences, BioPharmaceuticals R&D, AstraZeneca, Gaithersburg, MD, United States
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Yin R, Xue Y, Hu J, Hu X, Shen Q. The effects of diet and streptozotocin on metabolism and gut microbiota in a type 2 diabetes mellitus mouse model. FOOD AGR IMMUNOL 2020. [DOI: 10.1080/09540105.2020.1761302] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
- Ruiyang Yin
- Key Laboratory of Plant Protein and Grain processing, National Engineering Research Center for Fruits and Vegetable Processing, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, People’s Republic of China
| | - Yong Xue
- Key Laboratory of Plant Protein and Grain processing, National Engineering Research Center for Fruits and Vegetable Processing, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, People’s Republic of China
| | - Jinrong Hu
- Key Laboratory of Plant Protein and Grain processing, National Engineering Research Center for Fruits and Vegetable Processing, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, People’s Republic of China
| | - Xiaosong Hu
- Key Laboratory of Plant Protein and Grain processing, National Engineering Research Center for Fruits and Vegetable Processing, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, People’s Republic of China
| | - Qun Shen
- Key Laboratory of Plant Protein and Grain processing, National Engineering Research Center for Fruits and Vegetable Processing, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, People’s Republic of China
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Bahadur T, Chaudhry R, Bamola VD, Agrawal SK, Malhotra P, Chutani AM, Mirdha BR, Das BK, Sharma RK, Thakur CK. Toll like receptors (TLRs) in response to human gut microbiota of Indian obese and lean individuals. J Family Med Prim Care 2019; 8:1567-1570. [PMID: 31198715 PMCID: PMC6559096 DOI: 10.4103/jfmpc.jfmpc_136_19] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Background: The rising incidence of obesity is one of the most serious public health issues in the developed as well as in developing countries like India. Obesity and overweight are most important risk factors for many chronic diseases, including cardiovascular diseases, diabetes and cancer. In this study the body mass index (BMI) cut off was taken as 18.5-22.9 kg/m2 for normal, 23.0-24.9 kg/m2 for Overweight and >25 kg/m2 for obese as per WHO recommendation for Asian Indians, which is different for developed and developing countries. Role of gut microbiota mediated immune response in the development of obesity has been studied but the literature on Indian population are lacking. Therefore, a study was conducted to determine Toll like receptors (TLRs) in response to human gut microbiota of Indian obese and lean individuals using viable colonocytes in a Non invasive technique and Flowcytometry. Methods: A total of 20 healthy volunteer (10 obese and 10 lean) were enrolled in the study as per inclusion and exclusion criteria. Viable colonocytes were isolated from fecal samples using a Non invasive technique (SCSR Method). Toll like receptors (TLRs) and immunoglobulin (IgA &IgG) receptor concentration were measured by standard Flowcytometry methods using specific fluorochrome conjugated antibodies. Results: Average TLR2 receptor concentration was significantly higher in obese (6.35 %) as compared to lean (2.9 %) (P = 0.01). TLR4 receptor concentration was 1.4 % in obese and 1.65 % in lean although the difference was not statistically significant (P = 0.59). IgA & IgG receptor concentration was 49.6 % & 11.2 % in the obese and 67.15 % & 8.05 % in the lean respectively but the differences among both the group were not statistically significant. Conclusion: The results of the present study will be helpful for physicians and researchers to find some biomarkers which can determine predisposition of the obesity in Indian population and helps to use alternative therapeutics such as probiotics to maintain gut homeostasis and immune modulation to prevent obesity.
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Affiliation(s)
- Tej Bahadur
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Rama Chaudhry
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Vishwa Deepak Bamola
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Sonu K Agrawal
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | | | - Alka M Chutani
- Department of Dietetics, All India Institute of Medical Sciences, New Delhi, India
| | - Bijay R Mirdha
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Bimal K Das
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
| | - Rahul K Sharma
- Department of Haematology, All India Institute of Medical Sciences, New Delhi, India
| | - Chandan K Thakur
- Department of Microbiology, All India Institute of Medical Sciences, New Delhi, India
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Do MH, Lee E, Oh MJ, Kim Y, Park HY. High-Glucose or -Fructose Diet Cause Changes of the Gut Microbiota and Metabolic Disorders in Mice without Body Weight Change. Nutrients 2018; 10:E761. [PMID: 29899272 PMCID: PMC6024874 DOI: 10.3390/nu10060761] [Citation(s) in RCA: 257] [Impact Index Per Article: 42.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 05/30/2018] [Accepted: 06/11/2018] [Indexed: 12/11/2022] Open
Abstract
High fat diet-induced changes in gut microbiota have been linked to intestinal permeability and metabolic endotoxemia, which is related to metabolic disorders. However, the influence of a high-glucose (HGD) or high-fructose (HFrD) diet on gut microbiota is largely unknown. We performed changes of gut microbiota in HGD- or HFrD-fed C57BL/6J mice by 16S rRNA analysis. Gut microbiota-derived endotoxin-induced metabolic disorders were evaluated by glucose and insulin tolerance test, gut permeability, Western blot and histological analysis. We found that the HGD and HFrD groups had comparatively higher blood glucose and endotoxin levels, fat mass, dyslipidemia, and glucose intolerance without changes in bodyweight. The HGD- and HFrD-fed mice lost gut microbial diversity, characterized by a lower proportion of Bacteroidetes and a markedly increased proportion of Proteobacteria. Moreover, the HGD and HFrD groups had increased gut permeability due to alterations to the tight junction proteins caused by gut inflammation. Hepatic inflammation and lipid accumulation were also markedly increased in the HGD and HFrD groups. High levels of glucose or fructose in the diet regulate the gut microbiota and increase intestinal permeability, which precedes the development of metabolic endotoxemia, inflammation, and lipid accumulation, ultimately leading to hepatic steatosis and normal-weight obesity.
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Affiliation(s)
- Moon Ho Do
- Research Division of Food Functionality, Korea Food Research Institute, Jeollabuk-do 55365, Korea.
| | - Eunjung Lee
- Research Division of Strategic Food Technology, Korea Food Research Institute, Jeollabuk-do 55365, Korea.
| | - Mi-Jin Oh
- Research Division of Food Functionality, Korea Food Research Institute, Jeollabuk-do 55365, Korea.
| | - Yoonsook Kim
- Research Division of Food Functionality, Korea Food Research Institute, Jeollabuk-do 55365, Korea.
| | - Ho-Young Park
- Research Division of Food Functionality, Korea Food Research Institute, Jeollabuk-do 55365, Korea.
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Shonyela SM, Wang G, Yang W, Yang G, Wang C. New Progress regarding the Use of Lactic Acid Bacteria as Live Delivery Vectors, Treatment of Diseases and Induction of Immune Responses in Different Host Species Focusing on <i>Lactobacillus</i> Species. ACTA ACUST UNITED AC 2017. [DOI: 10.4236/wjv.2017.74004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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