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Wang R, Mao Y, Yu C, Rong Z, Wang R, Wang Y, Lv L, Gao Y, Wang Z, Zhang H. Research Progress of Natural Products with the Activity of Anti-nonalcoholic Steatohepatitis. Mini Rev Med Chem 2024; 24:1894-1929. [PMID: 38752645 DOI: 10.2174/0113895575306598240503054317] [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: 01/26/2024] [Revised: 03/19/2024] [Accepted: 03/29/2024] [Indexed: 10/16/2024]
Abstract
Nonalcoholic steatohepatitis (NASH), a multi-target disease, is becoming a global epidemic. Although several anti-NASH drug candidates are being evaluated in late-stage clinical trials, none have been approved by the FDA to date. Given the global prevalence of the disease, the lack of effective drugs, and the very limited therapeutic efficacy of most of the existing synthetic drugs focusing on a single target, there is an urgent need to continue to develop new therapeutic agents. In contrast, many natural products, including pure compounds and crude extracts, possess hepatoprotective activities. Usually, these natural components are characterized by multi-targeting and low side effects. Therefore, natural products are important resources for the development of new anti- NASH drugs. In this paper, we focus on reviewing the anti-NASH potential, structure, and some of the side effects of natural products based on structural classification. We hope this mini-review will help researchers design and develop new anti-NASH drugs, especially based on the structure of natural products.
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Affiliation(s)
- Rui Wang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an 710061, China
| | - Yuheng Mao
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an 710061, China
| | - Chunping Yu
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an 710061, China
| | - Zhenji Rong
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an 710061, China
| | - Ruyue Wang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an 710061, China
| | - Yixin Wang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an 710061, China
| | - Linjin Lv
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an 710061, China
| | - Yang Gao
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an 710061, China
| | - Zhigang Wang
- Department of Pharmaceutical Analysis, Heilongjiang University of Chinese Medicine, Harbin 150040, China
| | - Hailong Zhang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an 710061, China
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Dumolt JH, Patel MS, Rideout TC. Gestational hypercholesterolemia programs hepatic steatosis in a sex-specific manner in ApoE-deficient mice. J Nutr Biochem 2022; 101:108945. [PMID: 35016999 DOI: 10.1016/j.jnutbio.2022.108945] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 10/23/2021] [Accepted: 12/07/2021] [Indexed: 02/07/2023]
Abstract
Maternal hypercholesterolemia (MHC), a pathological condition characterized by an exaggerated rise in maternal serum cholesterol during pregnancy, may influence offspring hepatic lipid metabolism and increase the risk of nonalcoholic fatty liver disease (NAFLD). As NAFLD is characterized by a sexual dimorphic response, we assessed whether early-life exposure to excessive cholesterol influences the development of NAFLD in offspring and whether this occurs in a sex-specific manner. Female apoE-/- mice were randomly assigned to a control (CON) or a high cholesterol (CH; 0.15%) diet prior to breeding. At parturition, a cross-fostering approach was used to establish three groups: (1) normal cholesterol exposure throughout gestation and lactation (CON-CON); (2) excessive cholesterol exposure throughout gestation and lactation (CH-CH); and (3) excessive cholesterol exposure in the gestation period only (CH-CON). Adult male offspring (PND 84) exposed to excessive cholesterol during gestation only (CH-CON) demonstrated hepatic triglyceride (TG) accumulation and reduced lipogenic gene expression. However, male mice with a prolonged cholesterol exposure throughout gestation and lactation (CH-CH) had a similar, but not exacerbated hepatic response. Further, with the exception of higher serum TG in adult CH-CH females, evidence for a programming effect in female offspring was largely absent in comparison with males. These results indicate a sexual dimorphic response with respect to the effect of MHC on later life hepatic steatosis and highlight the gestation period as the most influential malprogramming window for hepatic lipid dysfunction in males.
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Affiliation(s)
- Jerad H Dumolt
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University of Buffalo, Buffalo, NY, USA; Division of Reproductive Sciences, Department of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Mulchand S Patel
- Department of Biochemistry, Jacobs School of Medicine and Biomedical Sciences, University of Buffalo, Buffalo, NY, USA
| | - Todd C Rideout
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University of Buffalo, Buffalo, NY, USA.
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She J, Gu T, Pang X, Liu Y, Tang L, Zhou X. Natural Products Targeting Liver X Receptors or Farnesoid X Receptor. Front Pharmacol 2022; 12:772435. [PMID: 35069197 PMCID: PMC8766425 DOI: 10.3389/fphar.2021.772435] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 11/22/2021] [Indexed: 12/18/2022] Open
Abstract
Nuclear receptors (NRs) are a superfamily of transcription factors induced by ligands and also function as integrators of hormonal and nutritional signals. Among NRs, the liver X receptors (LXRs) and farnesoid X receptor (FXR) have been of significance as targets for the treatment of metabolic syndrome-related diseases. In recent years, natural products targeting LXRs and FXR have received remarkable interests as a valuable source of novel ligands encompassing diverse chemical structures and bioactive properties. This review aims to survey natural products, originating from terrestrial plants and microorganisms, marine organisms, and marine-derived microorganisms, which could influence LXRs and FXR. In the recent two decades (2000-2020), 261 natural products were discovered from natural resources such as LXRs/FXR modulators, 109 agonists and 38 antagonists targeting LXRs, and 72 agonists and 55 antagonists targeting FXR. The docking evaluation of desired natural products targeted LXRs/FXR is finally discussed. This comprehensive overview will provide a reference for future study of novel LXRs and FXR agonists and antagonists to target human diseases, and attract an increasing number of professional scholars majoring in pharmacy and biology with more in-depth discussion.
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Affiliation(s)
- Jianglian She
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China.,College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China
| | - Tanwei Gu
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Xiaoyan Pang
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Yonghong Liu
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China.,College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China.,Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
| | - Lan Tang
- NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, China
| | - Xuefeng Zhou
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China.,Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China
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Mai CT, Zheng DC, Li XZ, Zhou H, Xie Y. Liver X receptors conserve the therapeutic target potential for the treatment of rheumatoid arthritis. Pharmacol Res 2021; 170:105747. [PMID: 34186192 DOI: 10.1016/j.phrs.2021.105747] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Revised: 06/21/2021] [Accepted: 06/24/2021] [Indexed: 01/03/2023]
Abstract
Rheumatoid arthritis (RA) is a chronic multi-system autoimmune disease with extremely complex pathogenesis. Significantly altered lipid paradox related to the inflammatory burden is reported in RA patients, inducing 50% higher cardiovascular risks. Recent studies have also demonstrated that lipid metabolism can regulate many functions of immune cells in which metabolic pathways have altered. The nuclear liver X receptors (LXRs), including LXRα and LXRβ, play a central role in regulating lipid homeostasis and inflammatory responses. Undoubtedly, LXRs have been considered as an attractive therapeutic target for the treatment of RA. However, there are some contradictory effects of LXRs agonists observed in previous animal studies where both pro-inflammatory role and anti-inflammatory role were revealed for LXRs activation in RA. Therefore, in addition to updating the knowledge of LXRs as the prominent regulators of lipid homeostasis, the purpose of this review is to summarize the effects of LXRs agonists in RA-associated immune cells, to explore the underlying reasons for the contradictory therapeutic effects of LXRs agonists observed in RA animal models, and to discuss future strategy for the treatment of RA with LXRs modulators.
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Affiliation(s)
- Chu-Tian Mai
- State Key Laboratory of Quality Research in Chinese Medicines, Macau University of Science and Technology, Taipa, Macau; Faculty of Chinese Medicines, Macau University of Science and Technology, Taipa, Macau
| | - De-Chong Zheng
- State Key Laboratory of Quality Research in Chinese Medicines, Macau University of Science and Technology, Taipa, Macau; Faculty of Chinese Medicines, Macau University of Science and Technology, Taipa, Macau
| | - Xin-Zhi Li
- State Key Laboratory of Quality Research in Chinese Medicines, Macau University of Science and Technology, Taipa, Macau
| | - Hua Zhou
- State Key Laboratory of Quality Research in Chinese Medicines, Macau University of Science and Technology, Taipa, Macau; Faculty of Chinese Medicines, Macau University of Science and Technology, Taipa, Macau
| | - Ying Xie
- State Key Laboratory of Quality Research in Chinese Medicines, Macau University of Science and Technology, Taipa, Macau.
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Mathew J, Huang SC, Dumolt JH, Patel MS, Rideout TC. Maternal hypercholesterolemia programs dyslipidemia in adult male mouse progeny. Reproduction 2021; 160:1-10. [PMID: 32272447 DOI: 10.1530/rep-20-0065] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 04/09/2020] [Indexed: 12/29/2022]
Abstract
As a collection of metabolic abnormalities including inflammation, insulin resistance, hypertension, hormone imbalance, and dyslipidemia, maternal obesity has been well-documented to program disease risk in adult offspring. Although hypercholesterolemia is strongly associated with obesity, less work has examined the programming influence of maternal hypercholesterolemia (MHC) independent of maternal obesity or high-fat feeding. This study was conducted to characterize how MHC per se impacts lipid metabolism in offspring. Female (n = 6/group) C57BL/6J mice were randomly assigned to: (1.) a standard chow diet (Control, CON) or (2.) the CON diet supplemented with exogenous cholesterol (CH) (0.15%, w/w) throughout mating and the gestation and lactation periods. At weaning (postnatal day (PND) 21) and adulthood (PND 84), male offspring were characterized for blood lipid and lipoprotein profile and hepatic lipid endpoints, namely cholesterol and triglyceride (TG) accumulation, fatty acid profile, TG production, and mRNA expression of lipid-regulatory genes. Both newly weaned and adult offspring from CH mothers demonstrated increased very low-density lipoprotein (VLDL) particle number and size and hepatic TG and n-6 polyunsaturated fatty acid accumulation. Further, adult CH offspring exhibited reduced fatty acid synthase (Fasn) and increased diglyceride acyltransferase (Dgat1) mRNA expression. These programming effects appear to be independent of changes in hepatic TG production and postprandial lipid clearance. Study results suggest that MHC, independent of obesity or high-fat feeding, can induce early changes to serum VLDL distribution and hepatic lipid profile that persist into adulthood.
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Affiliation(s)
- Joyce Mathew
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, Buffalo, New York, USA
| | - Sze-Chi Huang
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, Buffalo, New York, USA
| | - Jerad H Dumolt
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, Buffalo, New York, USA
| | - Mulchand S Patel
- Department of Biochemistry, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, New York, USA
| | - Todd C Rideout
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, Buffalo, New York, USA
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Fan S, Zhang H, Wang Y, Zhao Y, Luo L, Wang H, Chen G, Xing L, Zheng P, Huang C. LXRα/β Antagonism Protects against Lipid Accumulation in the Liver but Increases Plasma Cholesterol in Rhesus Macaques. Chem Res Toxicol 2021; 34:833-838. [PMID: 33647205 DOI: 10.1021/acs.chemrestox.0c00445] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is characterized by lipid accumulation in the liver and associates with obesity, hyperlipidemia, and insulin resistance. NAFLD could lead to nonalcoholic steatohepatitis (NASH), hepatic fibrosis, cirrhosis, and even cancers. The development of therapy for NAFLD has been proven difficult. Emerging evidence suggests that liver X receptor (LXR) antagonist is a potential treatment for fatty liver disease. However, concerns about the cholesterol-increasing effects make it questionable for the development of LXR antagonists. Here, the overweight monkeys were fed with LXRβ-selective antagonist sophoricoside or LXRα/β dual-antagonist morin for 3 months. The morphology of punctured liver tissues was examined by H&E staining. The liver, heart, and kidney damage indices were analyzed using plasma. The blood index was assayed using complete blood samples. We show that LXRβ-selective antagonist sophoricoside and LXRα/β dual-antagonist morin alleviated lipid accumulation in the liver in overweight monkeys. The compounds resulted in higher plasma TC or LDL-c contents, increased white blood cell and lymphocyte count, and decreased neutrophile granulocyte count in the monkeys. The compounds did not alter plasma glucose, apolipoprotein A (ApoA), ApoB, ApoE, lipoprotein (a) (LPA), nonesterified fatty acid (NEFA), aspartate transaminases (AST), creatinine (CREA), urea nitrogen (UN), and creatine kinase (CK) levels. Our data suggest that LXRβ-selective and LXRα/β dual antagonism may lead to hypercholesterolemia in nonhuman primates, which calls into question the development of LXR antagonist as a therapy for NAFLD.
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Affiliation(s)
- Shengjie Fan
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Haiyan Zhang
- Institute of Digestive Disease, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Yahui Wang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Yuanyuan Zhao
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Lingling Luo
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Hongrun Wang
- Hengshu Bio-Technology Company, Yibin HighTech Park, Yibin, Sichuan 644601, China
| | - Gen Chen
- Hengshu Bio-Technology Company, Yibin HighTech Park, Yibin, Sichuan 644601, China
| | - Lianjun Xing
- Institute of Digestive Disease, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Peiyong Zheng
- Institute of Digestive Disease, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Cheng Huang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
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Behl T, Bungau S, Kumar K, Zengin G, Khan F, Kumar A, Kaur R, Venkatachalam T, Tit DM, Vesa CM, Barsan G, Mosteanu DE. Pleotropic Effects of Polyphenols in Cardiovascular System. Biomed Pharmacother 2020; 130:110714. [PMID: 34321158 DOI: 10.1016/j.biopha.2020.110714] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 08/27/2020] [Accepted: 08/30/2020] [Indexed: 12/13/2022] Open
Abstract
Numerous epidemiological and clinical studies demonstrate the beneficial effects of naturally occurring, polyphenol supplementations, on cardiovascular system. The present review emphasizes on the risk factors associated with cardiovascular disorders (involving heart and blood vessels), and overview of preclinical and clinical trials on polyphenols for the treatment of cardiovascular diseases. The review collaborates PUBMED, Google Scholar and Research gate databases, which were explored using keywords and their combinations such as polyphenols, cardiovascular disease, flavonoids, atherosclerosis, cardiovascular risk factors and several others, to create an eclectic manuscript. The potency and efficacy of these polyphenols are mainly depending upon the amount of consumption and bioavailability. Recent data showed that polyphenols also exert beneficial actions on vascular system by blocking platelet aggregation and oxidation of low-density lipoprotein (LDL), ameliorating endothelial dysfunction, reducing blood pressure, improving antioxidant defenses and alleviating inflammatory responses. Several studies evidently support the cardioprotective actions mediated by polyphenols, however, some studies or long-term follow-up of human studies, did not demonstrate decisive outcomes because of variations in dose regimen and lack of appropriate controls. Therefore, more data is required to explore the therapeutic benefits of bioactive compounds as a preventive therapy for CVDs.
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Affiliation(s)
- Tapan Behl
- Chitkara College of Pharmacy, Chitkara University, Punjab, India.
| | - Simona Bungau
- Department of Pharmacy, Faculty of Medicine and Pharmacy, University of Oradea, 10 1 Decembrie Sq., Oradea, Romania.
| | - Keshav Kumar
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | | | - Fazlullah Khan
- Department of Toxicology and Pharmacology, The Institute of Pharmaceutical Sciences, School of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Arun Kumar
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | - Rajwinder Kaur
- Chitkara College of Pharmacy, Chitkara University, Punjab, India
| | | | - Delia Mirela Tit
- Department of Pharmacy, Faculty of Medicine and Pharmacy, University of Oradea, 10 1 Decembrie Sq., Oradea, Romania
| | - Cosmin Mihai Vesa
- Department of Preclinical Disciplines, Faculty of Medicine and Pharmacy, University of Oradea, 10 1 Decembrie Sq., Oradea, Romania
| | - Ghita Barsan
- "Nicolae Balcescu" Land Force Academy, Sibiu, Romania
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Zhang H, Jia Y, Tang Z, Wang L, Hu W, Gao J, Hu J, Yang M. Screening of chemicals with binding activities of liver X receptors from reclaimed waters. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 713:136570. [PMID: 31954245 DOI: 10.1016/j.scitotenv.2020.136570] [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: 11/08/2019] [Revised: 01/05/2020] [Accepted: 01/05/2020] [Indexed: 06/10/2023]
Abstract
Wastewater reclamation and reuse is considered an attractive and practical method for coping with water scarcity. However, the presence of micropollutants in reclaimed water, including endocrine disrupting chemicals (EDCs), is a major public health concern. This study attempted to identify unknown EDCs with liver X receptor (LXRα) agonist/antagonist activities in reclaimed wastewater, using nuclear receptors binding extraction coupled with high-resolution mass spectrometry (NRBE-HRMS). In total, 105 compounds in the reclaimed wastewater exhibited LXRα-binding activity. Among them, two previously unknown LXRα-antagonist compounds, catechol and 4-acetamidoantipyrine, were identified, based on authentic standards. The two LXRα-antagonist compounds exhibited weak LXRα-antagonist activities in a yeast two-hybrid assay. Catechol and 4-acetamidoantipyrine inhibited the β-galactosidase activity induced by 60 nM of TO901317 in an LXRα yeast assay, with IC20 values of 79,938.9 nM and 6286.4 nM, respectively. To the best of our knowledge, this is the first study to identify EDCs in reclaimed wastewater with LXRα-agonist/antagonist activity using the NRBE-HRMS method.
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Affiliation(s)
- Haifeng Zhang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
| | - Yingting Jia
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, China
| | - Zhuoheng Tang
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, China; Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China
| | - Lei Wang
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, China
| | - Wenxin Hu
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, China
| | - Junmin Gao
- Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University, Chongqing 400045, China
| | - Jianying Hu
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, China
| | - Min Yang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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Liu D, Ji Y, Zhao J, Wang H, Guo Y, Wang H. Black rice (Oryza sativa L.) reduces obesity and improves lipid metabolism in C57BL/6J mice fed a high-fat diet. J Funct Foods 2020. [DOI: 10.1016/j.jff.2019.103605] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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10
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Suolang PC, Liu BQ, Chen J, De J, Nima ZB, Dunzhu CR. Protective effect and mechanism of Qiwei Tiexie capsule on 3T3-L1 adipocytes cells and rats with nonalcoholic fatty liver disease by regulating LXRα, PPARγ, and NF-κB-iNOS-NO signaling pathways. JOURNAL OF ETHNOPHARMACOLOGY 2019; 236:316-325. [PMID: 30851372 DOI: 10.1016/j.jep.2019.03.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 02/12/2019] [Accepted: 03/03/2019] [Indexed: 06/09/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Qiwei Tiexie capsule (QWTX) is a representative prescription of Tibetan medicine, which is widely used for long-term treatment of chronic liver disease and nonalcoholic fatty liver disease (NAFLD). AIM OF THE STUDY This study explored the effects and mechanism of QWTX on 3T3-L1 adipocytes and NAFLD. MATERIALS AND METHODS The 3T3-L1 preadipocytes and NAFLD rat model were used in the study. In 3T3-L1 cells, the cytotoxicity of QWTX was tested by CKK-8, and glucose uptake and fat acid oxidation were assessed by 2-deoxy-D-[3H] glucose and [1-14C] palmitic acid, respectively. The expression levels of carnitine palmitoyltransferase-1 (CPT-1), liver X receptor α (LXRα), peroxisome proliferator-activated receptor (PPAR) γ, inducible nitric oxide synthase (iNOS), ikappa B α (IκBα), and AKT were determined by PCR and western blot. NAFLD was established by the administration of fat emulsion and sucrose for 9 weeks. The effects of QWTX on lipid metabolism, liver function, and hepatic morphology were observed in NAFLD rats by HE and transmission electron microscope. Serum level of nitric oxide (NO) and fee fatty acid (FFA), superoxide dismutase (SOD) and malondialdehyde (MDA) contents in the liver, as well as the expression levels of Cytochrome P450 2E1 (CYP2E1), NF-κB, monocyte chemoattractant protein 1 (MCP-1), CPT-1, LXRα, PPARα, PPARβ/δ, PPARγ, and iNOS were all detected. RESULTS QWTX showed no cell cytotoxicity in 3T3-L1 preadipocyte cells, and increased the 14CO2 production rate to 4.15, which indicated the reducing the fatty accumulation. In NAFLD, QWTX attenuated liver steatosis, fat vacuoles and inflammation from the HE staining and electron micrograph tests. For the oxidative stress biomarkers, serum FFA level was reduced and serum NO level was enhanced after QWTX treatment. In liver tissue, SOD was decreased and MDA was significantly increased in NAFLD, and both of them were restored by QWTX. NF-κB and CYP2E1 were also upregulated in NAFLD, while downregulated by QWTX. Downregulation of LXRα, PPARγ and iNOS by QWTX were both observed in the 3T3-L1 adipocytes and NAFLD model. CONCLUSIONS QWTX protected the liver injury in differentiated 3T3-L1 adipocytes and NAFLD by regulating the LXRα, PPARγ, and NF-κB-iNOS-NO signal pathways.
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Affiliation(s)
- Ping-Cuo Suolang
- The Affliated Hospital of Tibet Tibetan Medical College, Tibet, Lhasa, 58000, China
| | - Bao-Qing Liu
- Department of General Surgey, The Orient Hospital of Beijing Traditional Medical University, Beijing, 100078, China.
| | - Jing Chen
- The Affliated Hospital of Tibet Tibetan Medical College, Tibet, Lhasa, 58000, China
| | - Ji De
- The Affliated Hospital of Tibet Tibetan Medical College, Tibet, Lhasa, 58000, China
| | - Zha-Ba Nima
- The Affliated Hospital of Tibet Tibetan Medical College, Tibet, Lhasa, 58000, China
| | - Ci-Ren Dunzhu
- The Affliated Hospital of Tibet Tibetan Medical College, Tibet, Lhasa, 58000, China
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11
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Biological mechanisms and related natural modulators of liver X receptor in nonalcoholic fatty liver disease. Biomed Pharmacother 2019; 113:108778. [DOI: 10.1016/j.biopha.2019.108778] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 03/11/2019] [Accepted: 03/13/2019] [Indexed: 02/07/2023] Open
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12
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Cheng N, Chen S, Liu X, Zhao H, Cao W. Impact of SchisandraChinensis Bee Pollen on Nonalcoholic Fatty Liver Disease and Gut Microbiota in HighFat Diet Induced Obese Mice. Nutrients 2019; 11:E346. [PMID: 30736329 PMCID: PMC6412546 DOI: 10.3390/nu11020346] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 01/25/2019] [Accepted: 01/31/2019] [Indexed: 01/22/2023] Open
Abstract
Schisandrachinensisbee pollen has been used as a health food in China for centuries; however, its bioactive constituents and functions are not very clear. In this study, we investigated the phenolic compounds of Schisandrachinensisbee pollen extract (SCPE) by UHPLC-Q-Orbitrap-HRMS/HPLC-DAD-ECD and its prevention from nonalcoholic fatty liver disease (NAFLD) and modulation of gut microbiota in high fat diet induced obese C57BL/6 mice. The results showed that 12 phenolic compounds were identified in SCPE, and naringenin, rutin and chrysin were the main constituents. The content of naringenin reached 1.89 mg/g, and total phenolic content (TPC) of SCPE were 101.83 mg GA/g. After obese mice were administrated with SCPE at 7.86 and 15.72 g/kg BW for 8 weeks, body weight gains were reduced by 18.23% and 19.37%. SCPE could decrease fasting blood glucose, cut down the lipid accumulation in serum and liver, lessen oxidative injury and inflammation in obesity mice. Moreover, SCPE could effectively inhibit the formation of NAFLD by inhibition of LXR-α, SREBP-1c and FAS genes expression, and modulate the structural alteration of gut microbiota in obesity mice. These findings suggested that SCPE could attenuate the features of the metabolism syndrome in obesity mice, which can be used to prevent obesity and NAFLD of human beings.
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Affiliation(s)
- Ni Cheng
- College of Food Science and Technology, Northwest University, 229 North TaiBai Road, Xi'an 710069, China.
- Bee Product Research Center of Shaanxi Province, Xi'an 710065, China.
| | - Sinan Chen
- College of Food Science and Technology, Northwest University, 229 North TaiBai Road, Xi'an 710069, China.
| | - Xinyan Liu
- College of Food Science and Technology, Northwest University, 229 North TaiBai Road, Xi'an 710069, China.
| | - Haoan Zhao
- School of Chemical Engineering, Northwest University, 229 North TaiBai Road, Xi'an 710069, China.
| | - Wei Cao
- College of Food Science and Technology, Northwest University, 229 North TaiBai Road, Xi'an 710069, China.
- Bee Product Research Center of Shaanxi Province, Xi'an 710065, China.
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13
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ZNF300 stimulates fatty acid oxidation and alleviates hepatosteatosis through regulating PPARα. Biochem J 2019; 476:385-404. [PMID: 30568000 DOI: 10.1042/bcj20180517] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2018] [Revised: 12/05/2018] [Accepted: 12/19/2018] [Indexed: 02/07/2023]
Abstract
ZNF300 plays an important role in the regulation of HBV-related hepatocellular carcinoma. However, little is known about the role of ZNF300 in lipid metabolism and NAFLD. In the present study, we observed that ZNF300 expression was markedly decreased in free fatty acid (FFA)-induced fatty liver. Overexpressed ZNF300 alleviated hepatic lipid accumulation, whereas knockdown of ZNF300 enhanced the FFA-induced lipid accumulation. Investigations of the underlying mechanisms revealed that ZNF300 directly binds to and regulates the PPARα expression, thus promoting fatty acid oxidation. Furthermore, bisulfite pyrosequencing PCR (BSP) analysis identified the hypermethylation status of ZNF300 gene in FFA-treated hepatocytes. Importantly, the suppression of ZNF300 could be blocked by DNA methyltransferase inhibitor (5-azadC) or DNMT3a-siRNA. These results suggested that ZNF300 plays an important role in hepatic lipid metabolism via PPARα promoting fatty acid oxidation and this effect might be blocked by DNMT3a-mediated methylation of ZNF300. Therefore, in addition to ZNF300 expression levels, the methylation status of this gene also has a potential as a prognostic biomarker.
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Loh K, Tam S, Murray-Segal L, Huynh K, Meikle PJ, Scott JW, van Denderen B, Chen Z, Steel R, LeBlond ND, Burkovsky LA, O'Dwyer C, Nunes JRC, Steinberg GR, Fullerton MD, Galic S, Kemp BE. Inhibition of Adenosine Monophosphate-Activated Protein Kinase-3-Hydroxy-3-Methylglutaryl Coenzyme A Reductase Signaling Leads to Hypercholesterolemia and Promotes Hepatic Steatosis and Insulin Resistance. Hepatol Commun 2018; 3:84-98. [PMID: 30619997 PMCID: PMC6312662 DOI: 10.1002/hep4.1279] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 10/15/2018] [Indexed: 01/21/2023] Open
Abstract
Adenosine monophosphate-activated protein kinase (AMPK) regulates multiple signaling pathways involved in glucose and lipid metabolism in response to changes in hormonal and nutrient status. Cell culture studies have shown that AMPK phosphorylation and inhibition of the rate-limiting enzyme in the mevalonate pathway 3-hydroxy-3-methylglutaryl (HMG) coenzyme A (CoA) reductase (HMGCR) at serine-871 (Ser871; human HMGCR Ser872) suppresses cholesterol synthesis. In order to evaluate the role of AMPK-HMGCR signaling in vivo, we generated mice with a Ser871-alanine (Ala) knock-in mutation (HMGCR KI). Cholesterol synthesis was significantly suppressed in wild-type (WT) but not in HMGCR KI hepatocytes in response to AMPK activators. Liver cholesterol synthesis and cholesterol levels were significantly up-regulated in HMGCR KI mice. When fed a high-carbohydrate diet, HMGCR KI mice had enhanced triglyceride synthesis and liver steatosis, resulting in impaired glucose homeostasis. Conclusion: AMPK-HMGCR signaling alone is sufficient to regulate both cholesterol and triglyceride synthesis under conditions of a high-carbohydrate diet. Our findings highlight the tight coupling between the mevalonate and fatty acid synthesis pathways as well as revealing a role of AMPK in suppressing the deleterious effects of a high-carbohydrate diet.
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Affiliation(s)
- Kim Loh
- St. Vincent's Institute of Medical Research and Department of Medicine University of Melbourne Fitzroy Australia
| | - Shanna Tam
- St. Vincent's Institute of Medical Research and Department of Medicine University of Melbourne Fitzroy Australia
| | - Lisa Murray-Segal
- St. Vincent's Institute of Medical Research and Department of Medicine University of Melbourne Fitzroy Australia
| | - Kevin Huynh
- Baker Heart and Diabetes Institute Melbourne Australia
| | | | - John W Scott
- St. Vincent's Institute of Medical Research and Department of Medicine University of Melbourne Fitzroy Australia.,Mary MacKillop Institute for Health Research Australian Catholic University Fitzroy Australia.,The Florey Institute of Neuroscience and Mental Health Parville Australia
| | - Bryce van Denderen
- St. Vincent's Institute of Medical Research and Department of Medicine University of Melbourne Fitzroy Australia
| | - Zhiping Chen
- St. Vincent's Institute of Medical Research and Department of Medicine University of Melbourne Fitzroy Australia
| | - Rohan Steel
- St. Vincent's Institute of Medical Research and Department of Medicine University of Melbourne Fitzroy Australia
| | - Nicholas D LeBlond
- Department of Biochemistry, Microbiology and Immunology University of Ottawa Ottawa Canada
| | - Leah A Burkovsky
- Department of Biochemistry, Microbiology and Immunology University of Ottawa Ottawa Canada
| | - Conor O'Dwyer
- Department of Biochemistry, Microbiology and Immunology University of Ottawa Ottawa Canada
| | - Julia R C Nunes
- Department of Biochemistry, Microbiology and Immunology University of Ottawa Ottawa Canada
| | - Gregory R Steinberg
- Division of Endocrinology and Metabolism, Department of Medicine and Department of Biochemistry and Biomedical Sciences McMaster University Hamilton Canada
| | - Morgan D Fullerton
- Department of Biochemistry, Microbiology and Immunology University of Ottawa Ottawa Canada
| | - Sandra Galic
- St. Vincent's Institute of Medical Research and Department of Medicine University of Melbourne Fitzroy Australia
| | - Bruce E Kemp
- St. Vincent's Institute of Medical Research and Department of Medicine University of Melbourne Fitzroy Australia.,Mary MacKillop Institute for Health Research Australian Catholic University Fitzroy Australia
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15
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Hajighasem A, Farzanegi P, Mazaheri Z, Naghizadeh M, Salehi G. Effects of resveratrol, exercises and their combination on Farnesoid X receptor, Liver X receptor and Sirtuin 1 gene expression and apoptosis in the liver of elderly rats with nonalcoholic fatty liver. PeerJ 2018; 6:e5522. [PMID: 30221089 PMCID: PMC6136396 DOI: 10.7717/peerj.5522] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Accepted: 08/04/2018] [Indexed: 12/17/2022] Open
Abstract
Background Non-alcoholic fatty liver disease (NAFLD) is the most common chronic liver disorder. This study aims to consider effects of resveratrol, exercise and their combination on Farnesoid X receptor (Fxr), the liver X receptor (Lxr) and Sirtuin 1 (Sirt 1) genes expression in the liver of elderly rats with NAFLD. Methods Rats with NAFLD were randomly divided into seven groups including patient, saline, resveratrol (RSV), interval exercise, continuous exercise, interval exercise + RSV and continuous exercise + RSV. Levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST) and alkaline phosphatase (ALP) in the liver tissue were measured using specific ELISA kits. A TUNEL assay kit was used for the assessment of hepatic cells apoptosis. Lipid profiles were considered by measuring the serum triglyceride, cholesterol, LDL, and HDL. Expression of Sirt1, Lxr and Fxr genes was considered using RT-PCR. Results Resveratrol administration alone or combined with exercise training significantly improved the expression of Sirt1, Lxr and Fxr genes (p < 0.05) in the hepatic tissue of rats with NAFLD, while levels of AST, ALT, ALP enzymes, as well as apoptotic cells were significantly decreased (p < 0.05). Discussion Although resveratrol alone improves the expression of Sirt1, Lxr and Fxr, as well as liver function, combined therapy with exercise training is more effective to improve NAFLD.
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Affiliation(s)
- Amir Hajighasem
- Department of Exercise Physiology, Sari Branch, Islamic Azad University, Sari, Iran
| | - Parvin Farzanegi
- Department of Exercise Physiology, Sari Branch, Islamic Azad University, Sari, Iran
| | - Zohreh Mazaheri
- Department of Anatomical Sciences, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Marjan Naghizadeh
- Department of Exercise Physiology, Sari Branch, Islamic Azad University, Sari, Iran
| | - Ghoncheh Salehi
- Department of Exercise Physiology, Sari Branch, Islamic Azad University, Sari, Iran
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16
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Juritsch A, Tsai YT, Patel MS, Rideout TC. Transcriptional control of enterohepatic lipid regulatory targets in response to early cholesterol and phytosterol exposure in apoE -/- mice. BMC Res Notes 2017; 10:529. [PMID: 29084592 PMCID: PMC5661921 DOI: 10.1186/s13104-017-2859-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 10/23/2017] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVE An excessive rise in blood lipids during pregnancy may promote metabolic dysfunction in adult progeny. We characterized how maternal phytosterol (PS) supplementation affected serum lipids and the expression of lipid-regulatory genes in the intestine and liver of newly-weaned apo-E deficient offspring from dams fed a chow diet supplemented with cholesterol (0.15%, CH) or cholesterol and PS (2%) (CH/PS) throughout pregnancy and lactation. RESULTS Serum lipid concentrations and lipoprotein particle numbers were exacerbated in offspring from cholesterol-supplemented mothers but normalized to chow-fed levels in pups exposed to PS through the maternal diet during gestation and lactation. Compared with the CH pups, pups from PS-supplemented mothers demonstrated higher (p < 0.05) expression of the primary intestinal cholesterol transport protein (Niemann-Pick C1-like 1) and the rate-limiting enzyme in hepatic cholesterol synthesis (HMG-CoAr), suggestive of a compensatory response to restore cholesterol balance. Furthermore, pups from PS-supplemented mothers exhibited a coordinated downregulation (p < 0.05) of several genes regulating fatty acid synthesis including PGC1β, SREBP1c, FAS, and ACC compared with the CH group. These results suggest that maternal PS supplementation during hypercholesterolemic pregnancies protects against aberrant lipid responses in newly-weaned offspring and results in differential regulation of cholesterol and lipid regulatory targets within the enterohepatic loop.
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Affiliation(s)
- Anthony Juritsch
- Departments of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY, 14214, USA
| | - Yi-Ting Tsai
- Departments of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY, 14214, USA
| | - Mulchand S Patel
- Biochemistry, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, 14214, USA
| | - Todd C Rideout
- Departments of Exercise and Nutrition Sciences, School of Public Health and Health Professions, University at Buffalo, Buffalo, NY, 14214, USA.
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17
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Dumolt JH, Radhakrishnan SK, Moghadasian MH, Le K, Patel MS, Browne RW, Rideout TC. Maternal hypercholesterolemia enhances oxysterol concentration in mothers and newly weaned offspring but is attenuated by maternal phytosterol supplementation. J Nutr Biochem 2017; 52:10-17. [PMID: 29107136 DOI: 10.1016/j.jnutbio.2017.09.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Revised: 09/02/2017] [Accepted: 09/12/2017] [Indexed: 12/17/2022]
Abstract
In hypercholesterolemic pregnancies, the maternal environment is characterized by excessive levels of atherogenic lipids that may increase cardiovascular disease risk in mothers and their offspring. We examined the influence of maternal hypercholesterolemia and phytosterol (PS) intervention on the concentration and metabolism of oxysterols, bioactive oxygenated cholesterol derivatives that regulate arterial health and lesion progression, in mothers and their newly weaned offspring. Twenty-one female apoE-/- mice were randomly assigned to three different diets throughout gestation and lactation: (1) chow, (2) high cholesterol (CH; 0.15%) and (3) CH with added PS (2%, CH/PS). At the end of the lactation period, mothers and pups were euthanized for serum and hepatic oxysterol analyses, hepatic transcriptional profiling of hepatic sterol regulatory targets and atherosclerosis. Hypercholesterolemic dams and their pups demonstrated increased (P˂.05) serum oxysterols [including 24 hydroxycholesterol (HC), 25HC, 27HC, 7αHC, 7βHC and 7 ketocholesterol)] compared with the chow group that were normalized by maternal PS supplementation. Hepatic oxysterol concentrations followed a similar pattern of response in mothers but were not altered in newly weaned pups. Hepatic mRNA expression suggested a pattern of enhanced abca1/g1 high-density-lipoprotein-mediated efflux but a reduction in biliary abcg5/g8 export in both dams and their pups. Although arterial lesions were not apparent in newly weaned pups, CH dams demonstrated enhanced atherosclerosis that was reduced upon PS intervention. These results demonstrate that offspring from hypercholesterolemic pregnancies have enhanced circulating oxysterol concentrations and highlight the potential utility of PS as a lipid-lowering option during hypercholesterolemic pregnancies for which there are currently limited options.
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Affiliation(s)
- Jerad H Dumolt
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, USA 14214
| | - Sandhya K Radhakrishnan
- Department of Biotechnical and Clinical Laboratory Sciences, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, USA 14214
| | - Mohammed H Moghadasian
- Department of Human Nutritional Sciences, University of Manitoba, and Canadian Centre for Agri-Food Research in Health and Medicine, St. Boniface Hospital Research Centre, Winnipeg, MB, Canada, RH2 2A6
| | - Khuong Le
- Department of Human Nutritional Sciences, University of Manitoba, and Canadian Centre for Agri-Food Research in Health and Medicine, St. Boniface Hospital Research Centre, Winnipeg, MB, Canada, RH2 2A6
| | - Mulchand S Patel
- Department of Biochemistry, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, USA 14214
| | - Richard W Browne
- Department of Biotechnical and Clinical Laboratory Sciences, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, USA 14214
| | - Todd C Rideout
- Department of Exercise and Nutrition Sciences, School of Public Health and Health Professions, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, NY, USA 14214.
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Lee A, Choi KM, Jung WB, Jeong H, Kim GY, Lee JH, Lee MK, Hong JT, Roh YS, Sung SH, Yoo HS. Enhancement of Glucose Uptake by Meso-Dihydroguaiaretic Acid through GLUT4 Up-Regulation in 3T3-L1 Adipocytes. Molecules 2017; 22:molecules22091423. [PMID: 28846649 PMCID: PMC6151792 DOI: 10.3390/molecules22091423] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2017] [Revised: 08/22/2017] [Accepted: 08/25/2017] [Indexed: 01/28/2023] Open
Abstract
Type 2 diabetes is characterized by insulin resistance, which leads to increased blood glucose levels. Adipocytes are involved in the development of insulin resistance, resulting from the dysfunction of the insulin signaling pathway. In this study, we investigated whether meso-dihydroguaiaretic acid (MDGA) may modulate glucose uptake in adipocytes, and examined its mechanism of action. MDGA enhanced adipogenesis through up-regulation of peroxisome proliferator-activated receptor γ and CCAAT/enhancer-binding protein α in 3T3-L1 adipocytes partially differentiated with sub-optimal concentrations of insulin. MDGA also increased glucose uptake by stimulating expression and translocation of glucose transporter 4 (GLUT4) in adipocytes. These results suggest that MDGA may increase GLUT4 expression and its translocation by promoting insulin sensitivity, leading to enhanced glucose uptake.
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Affiliation(s)
- Anna Lee
- College of Pharmacy, Chungbuk National University, Osongsaengmyeong 1-ro, Heungduk-gu, Cheongju 28160, Korea.
| | - Kyeong-Mi Choi
- College of Pharmacy, Chungbuk National University, Osongsaengmyeong 1-ro, Heungduk-gu, Cheongju 28160, Korea.
| | - Won-Beom Jung
- College of Pharmacy, Chungbuk National University, Osongsaengmyeong 1-ro, Heungduk-gu, Cheongju 28160, Korea.
| | - Heejin Jeong
- College of Pharmacy, Chungbuk National University, Osongsaengmyeong 1-ro, Heungduk-gu, Cheongju 28160, Korea.
| | - Ga-Yeong Kim
- College of Pharmacy, Chungbuk National University, Osongsaengmyeong 1-ro, Heungduk-gu, Cheongju 28160, Korea.
| | - Ju Hyun Lee
- College of Pharmacy, Chungbuk National University, Osongsaengmyeong 1-ro, Heungduk-gu, Cheongju 28160, Korea.
| | - Mi Kyeong Lee
- College of Pharmacy, Chungbuk National University, Osongsaengmyeong 1-ro, Heungduk-gu, Cheongju 28160, Korea.
| | - Jin Tae Hong
- College of Pharmacy, Chungbuk National University, Osongsaengmyeong 1-ro, Heungduk-gu, Cheongju 28160, Korea.
| | - Yoon-Seok Roh
- College of Pharmacy, Chungbuk National University, Osongsaengmyeong 1-ro, Heungduk-gu, Cheongju 28160, Korea.
| | - Sang-Hyun Sung
- College of Pharmacy, Seoul National University, Seoul 08826, Korea.
| | - Hwan-Soo Yoo
- College of Pharmacy, Chungbuk National University, Osongsaengmyeong 1-ro, Heungduk-gu, Cheongju 28160, Korea.
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Ye XH, Chen H, Yu Q, Zhu QL. Liver X Receptor Gene Expression is Enhanced in Children with Obstructive Sleep Apnea-Hyperpnoea Syndrome and Cyclooxygenase-2 (COX-2) is Correlated with Severity of Obstructive Sleep Apnea-Hypopnea Syndrome (OSAHS). Med Sci Monit 2017; 23:3261-3268. [PMID: 28676625 PMCID: PMC5508877 DOI: 10.12659/msm.900947] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2016] [Accepted: 09/02/2016] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Liver X receptor (LXR) is a nuclear receptor presenting in macrophages; it works indispensably in lipid metabolism control and also negatively regulates the expression of inflammatory genes in macrophages. There are many LXR-related studies in adults with metabolic syndrome but rare reports in obese children with obstructive sleep apnea-hypopnea syndrome (OSAHS). The aim of this study was to investigate the expression of LXR, cholesterol ester transfer protein (CETP), and cyclooxygenase-2 (COX-2) genes in obese children with OSAHS compared with obese children without OSAHS and non-obese children. MATERIAL AND METHODS Sleep monitoring was conducted in 80 obese children with sleep disorders. Fasting morning blood samples from the 80 obese children and 51 normal children were collected and separated, so that macrophages were obtained after culture. Fluorescence quantitative real-time PCR (RT-PCR) was used to detect expression levels of the LXR, CETP, and COX-2 genes. RESULTS LXR, COX-2, and CETP levels in the OSAHS group were higher than those in the other two groups (P<0.05), and the LXR levels in the group of obese children without OSAHS were higher than those in control group (P<0.05). COX-2 expression in the group with moderate to severe OSAHS was higher than that in the group with mild OSAHS (P<0.05). Meanwhile, there were no significant differences in the LXR and CETP levels between the moderate to severe OSAHS group and the mild OSAHS group (P>0.05). CONCLUSIONS LXR gene expression was significantly increased in obese children with OSAHS. The severity of OSAHS was positively correlated with COX-2 levels.
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Affiliation(s)
- Xin-Hua Ye
- Child Medical Care Center, The 1 Hospital of Lanzhou University, Lanzhou, Gansu, P.R. China
| | - Hong Chen
- Child Medical Care Center, The 1 Hospital of Lanzhou University, Lanzhou, Gansu, P.R. China
| | - Qin Yu
- Department of Respiratory Medicine, The 1 Hospital of Lanzhou University, Lanzhou, Gansu, P.R. China
| | - Qing-Ling Zhu
- Child Medical Care Center, The 1 Hospital of Lanzhou University, Lanzhou, Gansu, P.R. China
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The regulatory effects of fish oil and chitosan on hepatic lipogenic signals in high-fat diet-induced obese rats. J Food Drug Anal 2017; 25:919-930. [PMID: 28987369 PMCID: PMC9328862 DOI: 10.1016/j.jfda.2016.11.015] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Revised: 11/15/2016] [Accepted: 11/22/2016] [Indexed: 12/20/2022] Open
Abstract
The present study investigated the regulatory effects of fish oil and chitosan on the signals of hepatic lipid metabolism and the postulated mechanism in high-fat diet-induced obese rats. Diet supplementation of chitosan and fish oil efficiently suppressed the increased weights in body and livers of high-fat diet-fed rats. Supplementation of chitosan and fish oil significantly decreased the activities of hepatic lipid biosynthesis-related enzymes and efficiently regulated plasma lipoprotein homeostasis. Both chitosan and fish oil significantly ameliorated the alterations in the protein expressions of hepatic lipogenic transcription factors (LXRα and PPARα), and could also significantly regulate the downstream hepatic lipogenic genes (FAS, HMGCR, CYP7A1, FATP, FABP, AOX, and ABCA) expressions in high-fat diet-fed rats. These results suggest that both fish oil and chitosan exerts downregulative effects on hepatic lipid metabolism in high-fat diet-induced obese rats via the LXRα inhibition and PPARα activation, which further affect the expressions of hepatic lipogenesis-associated genes.
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21
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Zanella I, Biasiotto G, Holm F, di Lorenzo D. Cereal Lignans, Natural Compounds of Interest for Human Health? Nat Prod Commun 2017. [DOI: 10.1177/1934578x1701200139] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Cereals are suggested to be the most important sources of lignan in the diets of western populations. Recent epidemiological studies show that European subpopulations in which the major source of lignans are cereals, display lower disease frequency regarding metabolic and cardiovascular diseases. The biological mechanisms of lignan are several. Beyond their antioxidant and anti-inflammatory actions at nutritional doses some lignans regulate the activity of specific nuclear receptors (NRs), such as the estrogen receptors (ERs), and also NRs that are central switches in glucose and fatty acid metabolism such as PPARα, PPARγ and LXRs, highlighting them as selective nuclear receptor modulators (SNRMs). These include enterodiol (END) and enterolactone (ENL), the metabolites produced by the gut microbiota from food lignans. The available knowledge suggests that given some additional research it should be possible to make ‘function' claims for a regular intake of lignans-rich foods related to maintaining a healthy metabolism.
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Affiliation(s)
- Isabella Zanella
- Laboratory of Biotechnology, Civic Hospital of Brescia, Brescia, Italy
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Giorgio Biasiotto
- Laboratory of Biotechnology, Civic Hospital of Brescia, Brescia, Italy
- Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Finn Holm
- Foodgroup Denmark, Rugårdsvej 14 A1, Dk-8400 Ebeltoft, Denmark
| | - Diego di Lorenzo
- Laboratory of Biotechnology, Civic Hospital of Brescia, Brescia, Italy
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Kong Q, Zhang H, Zhao T, Zhang W, Yan M, Dong X, Li P. Tangshen formula attenuates hepatic steatosis by inhibiting hepatic lipogenesis and augmenting fatty acid oxidation in db/db mice. Int J Mol Med 2016; 38:1715-1726. [PMID: 27840945 PMCID: PMC5117754 DOI: 10.3892/ijmm.2016.2799] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 11/03/2016] [Indexed: 12/24/2022] Open
Abstract
Tangshen formula (TSF), a well-prescribed traditional Chinese formula, has been used in the treatment of diabetic nephropathy. However, whether TSF ameliorates dyslipidemia and liver injury associated with diabetes remains unclear. In this study, we examined the effects of TSF on lipid profiles and hepatic steatosis in db/db mice. For this purpose, 8‑week-old db/db mice were treated with TSF or saline for 12 weeks via gavage and db/m mice were used as controls. Body weight and blood glucose levels were monitored weekly and bi-weekly, respectively. Blood samples were obtained for the analysis of lipids and enzymes related to hepatic function, and liver tissues were analyzed by histology, immunohistochemistry and molecular examination. The results revealed that TSF markedly reduced body weight, liver index [liver/body weight (LW/BW)] and improved lipid profiles, hepatic function and steatosis in db/db mice. TSF induced the phosphoralation of AMP-activated protein kinase and inhibited the activity of sterol regulatory element-binding protein 1 together with the inhibition of the expression of genes involved in de novo lipogenesis (DNL) and gluconeogenesis, such as fatty acid synthase (FAS), acetyl-CoA carboxylase (ACC), stearoyl CoA desaturase 1 (SCD1), glucose-6-phosphatase (G6pc) and phosphoenolpyruvate carboxykinase 1 (Pck1). Additionally, the silent mating type information regulation 2 homolog 1 (Sirt1)/peroxisome proliferator-activated receptor α (PPARα)/malonyl-CoA decarboxylase (MLYCD) cascade was potently activated by TSF in the liver and skeletal muscle of db/db mice, which led to enhanced fatty acid oxidation. These findings demonstrated that TSF attenuated hepatic fat accumulation and steatosis in db/db mice by inhibiting lipogenesis and augmenting fatty acid oxidation.
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Affiliation(s)
- Qin Kong
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, P.R. China
| | - Haojun Zhang
- Beijing Key Laboratory for Immune-Mediated Inflammatory Diseases, Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, P.R. China
| | - Tingting Zhao
- Beijing Key Laboratory for Immune-Mediated Inflammatory Diseases, Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, P.R. China
| | - Weiku Zhang
- Beijing Key Laboratory for Immune-Mediated Inflammatory Diseases, Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, P.R. China
| | - Meihua Yan
- Beijing Key Laboratory for Immune-Mediated Inflammatory Diseases, Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, P.R. China
| | - Xi Dong
- Beijing Key Laboratory for Immune-Mediated Inflammatory Diseases, Institute of Clinical Medical Sciences, China-Japan Friendship Hospital, Beijing, P.R. China
| | - Ping Li
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Science and Peking Union Medical College, Beijing, P.R. China
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23
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Sesamin ameliorates hepatic steatosis and inflammation in rats on a high-fat diet via LXRα and PPARα. Nutr Res 2016; 36:1022-1030. [DOI: 10.1016/j.nutres.2016.06.015] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 06/18/2016] [Accepted: 06/24/2016] [Indexed: 11/20/2022]
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24
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Ballestri S, Nascimbeni F, Romagnoli D, Baldelli E, Lonardo A. The Role of Nuclear Receptors in the Pathophysiology, Natural Course, and Drug Treatment of NAFLD in Humans. Adv Ther 2016; 33:291-319. [PMID: 26921205 DOI: 10.1007/s12325-016-0306-9] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Indexed: 02/06/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) describes steatosis, nonalcoholic steatohepatitis with or without fibrosis, and hepatocellular carcinoma, namely the entire alcohol-like spectrum of liver disease though observed in the nonalcoholic, dysmetabolic, individual free of competing causes of liver disease. NAFLD, which is a major public health issue, exhibits intrahepatic triglyceride storage giving rise to lipotoxicity. Nuclear receptors (NRs) are transcriptional factors which, activated by ligands, are master regulators of metabolism and also have intricate connections with circadian control accounting for cyclical patterns in the metabolic fate of nutrients. Several transcription factors, such as peroxisome proliferator-activated receptors, liver X receptors, farnesoid X receptors, and their molecular cascades, finely regulate energetic fluxes and metabolic pathways. Dysregulation of such pathways is heavily implicated in those metabolic derangements characterizing insulin resistance and metabolic syndrome and in the histogenesis of progressive NAFLD forms. We review the role of selected NRs in NAFLD pathogenesis. Secondly, we analyze the role of NRs in the natural history of human NAFLD. Next, we discuss the results observed in humans following administration of drug agonists or antagonists of the NRs pathogenically involved in NAFLD. Finally, general principles of treatment and lines of research in human NAFLD are briefly examined.
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Affiliation(s)
| | - Fabio Nascimbeni
- NOCSAE, Outpatient Liver Clinic and Operating Unit Internal Medicine, Azienda USL Modena, Modena, Italy
- University of Modena and Reggio Emilia, Modena, Italy
| | - Dante Romagnoli
- NOCSAE, Outpatient Liver Clinic and Operating Unit Internal Medicine, Azienda USL Modena, Modena, Italy
| | | | - Amedeo Lonardo
- NOCSAE, Outpatient Liver Clinic and Operating Unit Internal Medicine, Azienda USL Modena, Modena, Italy.
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meso-Dihydroguaiaretic acid attenuates airway inflammation and mucus hypersecretion in an ovalbumin-induced murine model of asthma. Int Immunopharmacol 2016; 31:239-47. [PMID: 26773771 DOI: 10.1016/j.intimp.2015.12.033] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 12/09/2015] [Accepted: 12/22/2015] [Indexed: 01/01/2023]
Abstract
meso-Dihydroguaiaretic acid (MDGA), which is a dibenzylbutane lignin isolated from the ethyl acetate fraction of Saururus chinensis, has various biological activities, including anti-oxidative, anti-inflammatory, anti-bacterial, and neuroprotective effects. However, no report has examined the potential anti-asthmatic activity of MDGA. In this study, we evaluated the protective effects of MDGA on asthmatic responses, particularly airway inflammation and mucus hypersecretion in an ovalbumin (OVA)-induced murine model of asthma. Intragastric administration of MDGA significantly lowered the productions of interleukin (IL)-4, IL-5, IL-13, tumor necrosis-α (TNF-α), eotaxin, monocyte chemoattractant protein-1 (MCP-1), vascular cell adhesion molecule-1 (VCAM-1), and immunoglobulin (Ig)E in bronchoalveolar lavage fluid (BALF), plasma, or lung tissues. Histological studies showed that MDGA inhibited OVA-induced inflammatory cell infiltration and mucus production in the respiratory tract. Moreover, MDGA markedly attenuated the OVA-induced activations of nuclear factor kappa B (NF-κB), extracellular-signal-regulated kinases 1/2 (ERK1/2), and p38 mitogen-activated protein kinase (p38 MAPK). Together, these results suggest that MDGA effectively inhibits airway inflammation and mucus hypersecretion by downregulating the levels of T helper 2 (Th2) cytokines, chemokines, and adhesion molecules, and inhibiting the activations of NF-κB and MAPKs.
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Pan YX, Luo Z, Zhuo MQ, Hu W, Wu K, Shi X, Xu YH. Liver X Receptor (LXR) in yellow catfish Pelteobagrus fulvidraco: Molecular characterization, mRNA tissue expression and transcriptional regulation by insulin in vivo and in vitro. Comp Biochem Physiol B Biochem Mol Biol 2016; 191:13-9. [DOI: 10.1016/j.cbpb.2015.08.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Revised: 08/08/2015] [Accepted: 08/26/2015] [Indexed: 01/08/2023]
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Jin L, Wang R, Zhu Y, Zheng W, Han Y, Guo F, Ye FB, Li Y. Selective targeting of nuclear receptor FXR by avermectin analogues with therapeutic effects on nonalcoholic fatty liver disease. Sci Rep 2015; 5:17288. [PMID: 26620317 PMCID: PMC4664883 DOI: 10.1038/srep17288] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 10/28/2015] [Indexed: 12/18/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) has become a predictive factor of death from many diseases. Farnesoid X receptor (FXR) is an ideal target for NAFLD drug development due to its crucial roles in lipid metabolism. The aim of this work is to examine the molecular mechanisms and functional roles of FXR modulation by avermectin analogues in regulating metabolic syndromes like NAFLD. We found that among avermectin analogues studied, the analogues that can bind and activate FXR are effective in regulating metabolic parameters tested, including reducing hepatic lipid accumulation, lowering serum cholesterol and glucose levels, and improving insulin sensitivity, in a FXR dependent manner. Mechanistically, the avermectin analogues that interact with FXR exhibited features as partial agonists, with distinctive properties in modulating coregulator recruitment. Structural features critical for avermectin analogues to selectively bind to FXR were also revealed. This study indicated that in addition to antiparasitic activity, avermectin analogues are promising drug candidates to treat metabolism syndrome including NAFLD by directly targeting FXR. Additionally, the structural features that discriminate the selective binding of FXR by avermectin analogues may provide a unique safe approach to design drugs targeting FXR signaling.
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Affiliation(s)
- Lihua Jin
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Fujian 361005, China.,State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Fujian 361005, China
| | - Rui Wang
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Fujian 361005, China
| | - Yanlin Zhu
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Fujian 361005, China
| | - Weili Zheng
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Fujian 361005, China
| | - Yaping Han
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Fujian 361005, China
| | - Fusheng Guo
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Fujian 361005, China
| | - Frank Bin Ye
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Fujian 361005, China
| | - Yong Li
- State Key Laboratory of Cellular Stress Biology, Innovation Center for Cell Signaling Network, School of Life Sciences, Xiamen University, Fujian 361005, China
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Sim WC, Kim DG, Lee KJ, Choi YJ, Choi YJ, Shin KJ, Jun DW, Park SJ, Park HJ, Kim J, Oh WK, Lee BH. Cinnamamides, Novel Liver X Receptor Antagonists that Inhibit Ligand-Induced Lipogenesis and Fatty Liver. J Pharmacol Exp Ther 2015; 355:362-369. [DOI: 10.1124/jpet.115.226738] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
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Renga B, Festa C, De Marino S, Di Micco S, D'Auria MV, Bifulco G, Fiorucci S, Zampella A. Molecular decodification of gymnemic acids from Gymnema sylvestre. Discovery of a new class of liver X receptor antagonists. Steroids 2015; 96:121-31. [PMID: 25668616 DOI: 10.1016/j.steroids.2015.01.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Revised: 12/19/2014] [Accepted: 01/29/2015] [Indexed: 12/19/2022]
Abstract
The individual chemical components of commercial extract of Gymnema sylvestre, a medicinal plant used in the traditional systems of the Indian medicine for its antidiabetic and hypolipidemic properties, were isolated and evaluated for their capability to act as modulators of nuclear and membrane receptors involved in glucose and lipid homeostasis. The study disclosed for the first time that individual gymnemic acids are potent and selective antagonists for the β isoform of LXR. Indeed the above activity was shared by the most abundant aglycone gymnemagenin (10) whereas gymnestrogenin (11) was endowed with a dual LXRα/β antagonistic profile. Deep pharmacological investigation demonstrated that gymnestrogenin, reducing the expression of SREBP1c and ABCA1 in vitro, is able to decrease lipid accumulation in HepG2 cells. The results of this study substantiate the use of G. sylvestre extract in LXR mediated dislypidemic diseases.
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Affiliation(s)
- Barbara Renga
- Department of Surgery and Biomedical Sciences, Nuova Facoltà di Medicina, P.zza L. Severi, 1-06132 Perugia, Italy
| | - Carmen Festa
- Department of Pharmacy, University of Naples "Federico II", Via D. Montesano, 49, I-80131 Naples, Italy
| | - Simona De Marino
- Department of Pharmacy, University of Naples "Federico II", Via D. Montesano, 49, I-80131 Naples, Italy
| | - Simone Di Micco
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano (Salerno), Italy
| | - Maria Valeria D'Auria
- Department of Pharmacy, University of Naples "Federico II", Via D. Montesano, 49, I-80131 Naples, Italy
| | - Giuseppe Bifulco
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II, 132, 84084 Fisciano (Salerno), Italy
| | - Stefano Fiorucci
- Department of Surgery and Biomedical Sciences, Nuova Facoltà di Medicina, P.zza L. Severi, 1-06132 Perugia, Italy
| | - Angela Zampella
- Department of Pharmacy, University of Naples "Federico II", Via D. Montesano, 49, I-80131 Naples, Italy.
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Fu Y, Tian Y, Wei Z, Liu H, Song X, Liu W, Zhang W, Wang W, Cao Y, Zhang N. Liver X receptor agonist prevents LPS-induced mastitis in mice. Int Immunopharmacol 2014; 22:379-83. [PMID: 25066757 DOI: 10.1016/j.intimp.2014.07.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 07/09/2014] [Accepted: 07/11/2014] [Indexed: 01/26/2023]
Abstract
Liver X receptor-α (LXR-α) which belongs to the nuclear receptor superfamily, is a ligand-activated transcription factor. Best known for its ability to regulate lipid metabolism and transport, LXRs have recently also been implicated in regulation of inflammatory response. The aim of this study was to investigate the preventive effects of synthetic LXR-α agonist T0901317 on LPS-induced mastitis in mice. The mouse model of mastitis was induced by injection of LPS through the duct of mammary gland. T0901317 was injected 1h before and 12h after induction of LPS intraperitoneally. The results showed that T0901317 significantly attenuated the infiltration of neutrophilic granulocytes, and the activation of myeloperoxidase (MPO); down-regulated the level of pro-inflammatory mediators including TNF-α, IL-1β, IL-6, COX-2 and PEG2; inhibited the phosphorylation of IκB-α and NF-κB p65, caused by LPS. Moreover, we report for the first time that LXR-α activation impaired LPS-induced mastitis. Taken together, these data indicated that T0901317 had protective effect on mastitis and the anti-inflammatory mechanism of T0901317 on LPS induced mastitis in mice may be due to its ability to inhibit NF-κB signaling pathway. LXR-α activation can be used as a therapeutic approach to treat mastitis.
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Affiliation(s)
- Yunhe Fu
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province 130062, PR China
| | - Yuan Tian
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province 130062, PR China
| | - Zhengkai Wei
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province 130062, PR China
| | - Hui Liu
- Daqing Honggang District Animal Health Supervision, Daqing, Heilongjiang Province 163000, PR China
| | - Xiaojing Song
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province 130062, PR China
| | - Wenbo Liu
- Daqing Honggang District Animal Health Supervision, Daqing, Heilongjiang Province 163000, PR China
| | - Wenlong Zhang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province 130062, PR China
| | - Wei Wang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province 130062, PR China
| | - Yongguo Cao
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province 130062, PR China
| | - Naisheng Zhang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Jilin University, Changchun, Jilin Province 130062, PR China.
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