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Liu D, Wang S, Liu Y, Luo Y, Wen B, Wu W, Zeng H, Huang J, Liu Z. Fuzhuan brick tea ameliorates hepatic steatosis and steatohepatitis through gut microbiota-derived aryl hydrocarbon receptor ligands in high-fat diet-induced obese mice. Food Funct 2023; 14:8351-8368. [PMID: 37606634 DOI: 10.1039/d3fo01782f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
High-fat diet (HFD) induced obesity and its associated conditions, such as hepatic steatosis and steatohepatitis, are major health concerns worldwide. Previous studies have reported the excellent efficiency of Fuzhuan brick tea (FBT) in attenuating HFD-induced obesity and metabolic disorders. In this study, we investigated the effects of FBT on hepatic steatosis and simple steatohepatitis in HFD-induced obese mice, as well as the metabolic function of the gut microbiome using metagenomics and metabolomics. The results showed that FBT ameliorated dyslipidemia, hepatic steatosis and steatohepatitis in HFD-induced obese mice by normalizing the gut microbiota structure and tryptophan metabolism. FBT increased the cecal abundance of aryl hydrocarbon receptor (AhR)-ligand producing bacteria such as Lactobacillus_reuteri and Lactobacillus_johnsonii, at the expense of AhR-ligand consuming bacteria, such as Faecalibaculum_rodentium and Escherichia_coli, and elevated the cecal contents of AhR-ligands such as IAA, IPA, and KYNA. Furthermore, FBT regulated the expressions of AhR and its targeted lipometabolic genes such as Pemt, Fasn, and SREBP-1c, as well as other inflammatory genes including TNF-α, IL-6, and IL-1β in the liver of mice. Overall, these findings highlight the beneficial effects of FBT on obesity-related hepatic steatosis and steatohepatitis via microbiota-derived AhR signaling.
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Affiliation(s)
- Dongmin Liu
- Changsha University of Science & Technology, Changsha 410114, China
- Key Laboratory of Ministry of Education for Tea Science, Hunan Agricultural University, Changsha 410128, China
| | - Siyu Wang
- Changsha University of Science & Technology, Changsha 410114, China
| | - Yaqing Liu
- Changsha University of Science & Technology, Changsha 410114, China
| | - Yong Luo
- Key Laboratory of Ministry of Education for Tea Science, Hunan Agricultural University, Changsha 410128, China
- National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Changsha 410128, China
| | - Beibei Wen
- Key Laboratory of Ministry of Education for Tea Science, Hunan Agricultural University, Changsha 410128, China
- National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Changsha 410128, China
| | - Wenliang Wu
- Key Laboratory of Ministry of Education for Tea Science, Hunan Agricultural University, Changsha 410128, China
- Tea Research Institute, Hunan Academy of Agricultural Sciences, Changsha 410125, China
| | - Hongliang Zeng
- Research Institute of Chinese Medicine, Hunan Academy of Chinese Medicine, Changsha, Hunan 410013, China
| | - Jianan Huang
- Key Laboratory of Ministry of Education for Tea Science, Hunan Agricultural University, Changsha 410128, China
- National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Changsha 410128, China
| | - Zhonghua Liu
- Key Laboratory of Ministry of Education for Tea Science, Hunan Agricultural University, Changsha 410128, China
- National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Changsha 410128, China
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Osaki A, Kagami K, Ishinoda Y, Sato A, Kimura T, Horii S, Ito K, Toya T, Ido Y, Namba T, Masaki N, Nagatomo Y, Adachi T. Reactive Oxygen Species in the Aorta and Perivascular Adipose Tissue Precedes Endothelial Dysfunction in the Aorta of Mice with a High-Fat High-Sucrose Diet and Additional Factors. Int J Mol Sci 2023; 24:ijms24076486. [PMID: 37047458 PMCID: PMC10095299 DOI: 10.3390/ijms24076486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/19/2023] [Accepted: 03/24/2023] [Indexed: 03/31/2023] Open
Abstract
Metabolic syndrome (Mets) is the major contributor to the onset of metabolic complications, such as hypertension, type 2 diabetes mellitus (DM), dyslipidemia, and non-alcoholic fatty liver disease, resulting in cardiovascular diseases. C57BL/6 mice on a high-fat and high-sucrose diet (HFHSD) are a well-established model of Mets but have minor endothelial dysfunction in isolated aortas without perivascular adipose tissue (PVAT). The purpose of this study was to evaluate the effects of additional factors such as DM, dyslipidemia, and steatohepatitis on endothelial dysfunction in aortas without PVAT. Here, we employed eight-week-old male C57BL/6 mice fed with a normal diet (ND), HFHSD, steatohepatitis choline-deficient HFHSD (HFHSD-SH), and HFHSD containing 1% cholesterol and 0.1% deoxycholic acid (HFHSD-Chol) for 16 weeks. At week 20, some HFHSD-fed mice were treated with streptozocin to develop diabetes (HFHSD-DM). In PVAT-free aortas, the endothelial-dependent relaxation (EDR) did not differ between ND and HFHSD (p = 0.25), but in aortas with PVAT, the EDR of HFHSD-fed mice was impaired compared with ND-fed mice (p = 0.005). HFHSD-DM, HFHSD-SH, and HFHSD-Chol impaired the EDR in aortas without PVAT (p < 0.001, p = 0.019, and p = 0.009 vs. ND, respectively). Furthermore, tempol rescued the EDR in those models. In the Mets model, the EDR is compromised by PVAT, but with the addition of DM, dyslipidemia, and SH, the vessels themselves may result in impaired EDR.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Yuji Nagatomo
- Correspondence: (Y.N.); (T.A.); Tel.: +81-4-2995-1597 (T.A.); Fax: +81-4-2996-5200 (T.A.)
| | - Takeshi Adachi
- Correspondence: (Y.N.); (T.A.); Tel.: +81-4-2995-1597 (T.A.); Fax: +81-4-2996-5200 (T.A.)
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From NAFLD to MAFLD: Definition, Pathophysiological Basis and Cardiovascular Implications. Biomedicines 2023; 11:biomedicines11030883. [PMID: 36979861 PMCID: PMC10046146 DOI: 10.3390/biomedicines11030883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/13/2023] [Accepted: 02/28/2023] [Indexed: 03/15/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is defined as a chronic liver disease characterized by excessive fat accumulation in the liver without another obvious cause (no excessive alcohol consumption, hepatotoxic medications, toxins, viral infections, genetic hepatic diseases), therefore it is an exclusion diagnosis. The term NAFLD literally refers to non-alcohol related hepatopathy and does not adequately correlate with metabolic dysfunction and related cardiovascular risks. Therefore, researchers and scientific societies have moved towards changing the terminology. The novel nomenclature for a metabolic-associated fatty liver disease (MAFLD) has been proposed in 2020 by a group of experts to overcome the issues related to the old terminology. The diagnosis of MAFLD is based on the presence of hepatic steatosis and at least one between these three conditions: type 2 diabetes mellitus (T2DM), obesity or metabolic dysregulation. MAFLD has been shown to be an independent risk factor for cardiovascular diseases and atherosclerosis. It is better related to the main risk factors for atherosclerosis and cardiovascular diseases than NAFLD, such as dyslipidemia, T2DM and hypertension. The aim of this review is to highlight the reasons why the term NAFLD is moving to the term MAFLD, what are the conceptual basis of this choice and its clinical implications, particularly in the cardiovascular field.
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Tang M, Wei XH, Cao H, Zhen Q, Liu F, Wang YF, Fan NG, Peng YD. Association between Chinese visceral adiposity index and metabolic-associated fatty liver disease in Chinese adults with type 2 diabetes mellitus. Front Endocrinol (Lausanne) 2022; 13:935980. [PMID: 35979441 PMCID: PMC9376620 DOI: 10.3389/fendo.2022.935980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 07/11/2022] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE The purpose of the study was to determine the correlation of the Chinese visceral adiposity index (CVAI) with metabolic-associated fatty liver disease (MAFLD) in Chinese adults with type 2 diabetes mellitus (T2DM). MATERIALS/METHODS In this cross-sectional study, data on sociodemographic characteristics, laboratory test results, coexisting diseases, and medical therapy were collected and analyzed. Multivariate logistic regression analyses were used to examine the correlation between CVAI and MAFLD. In order to investigate the correlation between CVAI on a continuous scale and MAFLD, a restricted cubic spline (RCS) was used. RESULTS A total of 679 participants were included in this study. There were 251 female participants and 428 male participants, with a median age of 55 years. In the multivariate logistic regression model, diastolic blood pressure, duration of diabetes, glycated hemoglobin, hemoglobin, alanine transaminase, aspartate aminotransferase, gamma -glutamyl transferase, albumin, blood urea nitrogen, total cholesterol, low-density lipoprotein cholesterol, statin use and metformin use were adjusted, and an evident increase in the odds ratios of MAFLD from the lowest to the highest CVAI quartile was found (P value for trend < 0.001). Moreover, the RCS curves revealed a positive correlation between CVAI and MAFLD. CONCLUSIONS The CVAI is positively correlated with MAFLD and may be an indicator with diagnostic value for MAFLD in clinical practice in type 2 diabetic patients.
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Affiliation(s)
- Min Tang
- Department of Endocrinology and Metabolism, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiao-Hui Wei
- Department of Endocrinology and Metabolism, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Han Cao
- Shanghai General Hospital of Nanjing Medical University, Shanghai, China
- Department of Endocrinology, Songjiang District Central Hospital, Shanghai, China
| | - Qin Zhen
- Department of Endocrinology and Metabolism, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Fang Liu
- Department of Endocrinology and Metabolism, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yu-Fan Wang
- Department of Endocrinology and Metabolism, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Neng-Guang Fan
- Department of Endocrinology and Metabolism, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Neng-Guang Fan, ; Yong-De Peng,
| | - Yong-De Peng
- Department of Endocrinology and Metabolism, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- *Correspondence: Neng-Guang Fan, ; Yong-De Peng,
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Gutiérrez-Cuevas J, Santos A, Armendariz-Borunda J. Pathophysiological Molecular Mechanisms of Obesity: A Link between MAFLD and NASH with Cardiovascular Diseases. Int J Mol Sci 2021; 22:ijms222111629. [PMID: 34769060 PMCID: PMC8583943 DOI: 10.3390/ijms222111629] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 09/16/2021] [Indexed: 02/06/2023] Open
Abstract
Obesity is now a worldwide epidemic ensuing an increase in comorbidities’ prevalence, such as insulin resistance, type 2 diabetes (T2D), metabolic dysfunction-associated fatty liver disease (MAFLD), nonalcoholic steatohepatitis (NASH), hypertension, cardiovascular disease (CVD), autoimmune diseases, and some cancers, CVD being one of the main causes of death in the world. Several studies provide evidence for an association between MAFLD and atherosclerosis and cardio-metabolic disorders, including CVDs such as coronary heart disease and stroke. Therefore, the combination of MAFLD/NASH is associated with vascular risk and CVD progression, but the underlying mechanisms linking MAFLD/NASH and CVD are still under investigation. Several underlying mechanisms may probably be involved, including hepatic/systemic insulin resistance, atherogenic dyslipidemia, hypertension, as well as pro-atherogenic, pro-coagulant, and pro-inflammatory mediators released from the steatotic/inflamed liver. MAFLD is strongly associated with insulin resistance, which is involved in its pathogenesis and progression to NASH. Insulin resistance is a major cardiovascular risk factor in subjects without diabetes. However, T2D has been considered the most common link between MAFLD/NASH and CVD. This review summarizes the evidence linking obesity with MAFLD, NASH, and CVD, considering the pathophysiological molecular mechanisms involved in these diseases. We also discuss the association of MAFLD and NASH with the development and progression of CVD, including structural and functional cardiac alterations, and pharmacological strategies to treat MAFLD/NASH and cardiovascular prevention.
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Affiliation(s)
- Jorge Gutiérrez-Cuevas
- Department of Molecular Biology and Genomics, Institute for Molecular Biology in Medicine and Gene Therapy, University of Guadalajara, CUCS, Guadalajara 44340, Jalisco, Mexico
- Correspondence: (J.G.-C.); (J.A.-B.); Tel.: +52-331-062-2083 (J.G.-C.); +52-333-677-8741 (J.A.-B.)
| | - Arturo Santos
- Tecnologico de Monterrey, School of Medicine and Health Sciences, Campus Guadalajara, Zapopan 45201, Jalisco, Mexico;
| | - Juan Armendariz-Borunda
- Department of Molecular Biology and Genomics, Institute for Molecular Biology in Medicine and Gene Therapy, University of Guadalajara, CUCS, Guadalajara 44340, Jalisco, Mexico
- Tecnologico de Monterrey, School of Medicine and Health Sciences, Campus Guadalajara, Zapopan 45201, Jalisco, Mexico;
- Correspondence: (J.G.-C.); (J.A.-B.); Tel.: +52-331-062-2083 (J.G.-C.); +52-333-677-8741 (J.A.-B.)
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Schierwagen R, Klein S, Trebicka J. A New Treatment for Chronic Hepatitis B and D Offers Novel Insights Into Obesity and Hepatic Steatosis. Cell Mol Gastroenterol Hepatol 2020; 10:649-651. [PMID: 32735954 PMCID: PMC7474155 DOI: 10.1016/j.jcmgh.2020.05.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 05/19/2020] [Accepted: 05/27/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Robert Schierwagen
- Department of Internal Medicine I, University Hospital, Goethe University, Frankfurt, Germany
| | - Sabine Klein
- Department of Internal Medicine I, University Hospital, Goethe University, Frankfurt, Germany
| | - Jonel Trebicka
- Department of Internal Medicine I, University Hospital, Goethe University, Frankfurt, Germany; European Foundation for the Study of Chronic Liver Failure, Barcelona, Spain.
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Budd J, Cusi K. Nonalcoholic Fatty Liver Disease: What Does the Primary Care Physician Need to Know? Am J Med 2020; 133:536-543. [PMID: 32017891 DOI: 10.1016/j.amjmed.2020.01.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/15/2020] [Accepted: 01/15/2020] [Indexed: 02/06/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is the most common chronic liver disease in the United States and is soon to be the leading cause of liver transplantation. Patients at the greatest risk are those with obesity and type 2 diabetes mellitus. In 2019 the American Diabetes Association guidelines called, for the first time, for clinicians to screen for steatohepatitis and fibrosis all patients with type 2 diabetes and liver steatosis or abnormal plasma aminotransferases. This requires primary care physicians to be aware of key aspects related to the diagnosis and treatment of NAFLD, as well as to when to refer to a specialist. Unfortunately, there is still significant medical inertia as clinicians remain unaware of its high morbidity/mortality. Early diagnosis in the primary care setting is critical to prevent progression to end-stage liver disease. Patients with NAFLD are also at a higher risk of developing type 2 diabetes mellitus and cardiovascular disease. Despite general perception to the contrary, weight loss by lifestyle intervention or bariatric surgery and several pharmacological treatments (eg, vitamin E in nondiabetics, pioglitazone or glucagon-like peptide 1 receptor agonists in patients with or without diabetes) can often be successful to reverse steatohepatitis and prevent disease progression.
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Affiliation(s)
| | - Kenneth Cusi
- Division of Endocrinology, Diabetes and Metabolism, University of Florida, Gainesville; Malcom Randall VA Medical Center, Gainesville, Fla.
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Zhang B, Zhang C, Zhang X, Li N, Dong Z, Sun G, Sun X. Atorvastatin promotes AMPK signaling to protect against high fat diet-induced non-alcoholic fatty liver in golden hamsters. Exp Ther Med 2020; 19:2133-2142. [PMID: 32104276 PMCID: PMC7027324 DOI: 10.3892/etm.2020.8465] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 12/11/2019] [Indexed: 12/19/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is characterized by diffuse fatty acid degeneration and excess fat accumulation in the liver. Notably, the currently available medications used to treat NAFLD remain limited. The aim of the present study was to investigate the protective role of atorvastatin (Ato) against NAFLD in golden hamsters fed a high fat diet (HFD) and in HepG2 cells treated with palmitate, and identify the underlying molecular mechanism. Ato (3 mg/kg) was administered orally every day for 8 weeks to the hamsters during HFD administration. Hamsters in the model group developed hepatic steatosis with high serum levels of triglyceride, cholesterol, insulin and C-reactive protein, which were effectively reduced by treatment with Ato. Additionally, the relative liver weight of hamsters treated with Ato was markedly lower compared with that of the model group. Hematoxylin and eosin, and oil red O staining indicated that the livers of the animals in the model group exhibited large and numerous lipid droplets, which were markedly decreased after Ato treatment. Western blot analysis indicated that Ato inhibited fat accumulation in the liver through the AMP-activated protein kinase (AMPK)-dependent activation of peroxisome proliferator activated receptor α (PPARα), peroxisome proliferator-activated receptor-γ coactivator 1 α and their target genes. Furthermore, in vitro, Ato inhibited PA-induced lipid accumulation in HepG2 cells. This inhibitory effect was attenuated following Compound C treatment, indicating that AMPK may be a potential target of Ato. In conclusion, the increase in AMPK-mediated PPARα and its target genes may represent a novel molecular mechanism by which Ato prevents NAFLD.
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Affiliation(s)
- Bin Zhang
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100193, P.R. China.,Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, P.R. China.,Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Beijing 100193, P.R. China.,Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolism Disorder Disease, State Administration of Traditional Chinese Medicine, Beijing 100193, P.R. China
| | - Chenyang Zhang
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100193, P.R. China.,Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, P.R. China.,Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Beijing 100193, P.R. China.,Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolism Disorder Disease, State Administration of Traditional Chinese Medicine, Beijing 100193, P.R. China
| | - Xuelian Zhang
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100193, P.R. China.,Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, P.R. China.,Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Beijing 100193, P.R. China.,Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolism Disorder Disease, State Administration of Traditional Chinese Medicine, Beijing 100193, P.R. China
| | - Nannan Li
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100193, P.R. China
| | - Zhengqi Dong
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100193, P.R. China
| | - Guibo Sun
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100193, P.R. China.,Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, P.R. China.,Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Beijing 100193, P.R. China.,Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolism Disorder Disease, State Administration of Traditional Chinese Medicine, Beijing 100193, P.R. China
| | - Xiaobo Sun
- Institute of Medicinal Plant Development, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100193, P.R. China.,Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Beijing 100193, P.R. China.,Beijing Key Laboratory of Innovative Drug Discovery of Traditional Chinese Medicine (Natural Medicine) and Translational Medicine, Beijing 100193, P.R. China.,Key Laboratory of Efficacy Evaluation of Chinese Medicine against Glycolipid Metabolism Disorder Disease, State Administration of Traditional Chinese Medicine, Beijing 100193, P.R. China
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