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Kim K, Kim CE, Baek DJ, Park EY, Oh YS. Prevention of UVB-Induced Photoaging by an Ethyl Acetate Fraction from Allomyrina dichotoma Larvae and Its Potential Mechanisms in Human Dermal Fibroblasts. Int J Mol Sci 2024; 25:7850. [PMID: 39063091 PMCID: PMC11277254 DOI: 10.3390/ijms25147850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2024] [Revised: 07/13/2024] [Accepted: 07/16/2024] [Indexed: 07/28/2024] Open
Abstract
Allomyrina dichotoma larvae (ADL) is an insect type that is used ethnopharmacologically to treat various diseases; however, its use as an antiaging treatment has not been widely studied. Previously, we found that an ethyl acetate (EA) fraction derived from an ADL extract (ADLE) has a high polyphenol content and antioxidant properties. In this study, we identified the underlying molecular mechanism for the protective effect of the EA fraction against UVB-induced photodamage in vitro and ex vivo. UVB treatment increased intracellular reactive oxygen species levels and DNA damage; the latter of which was significantly decreased following cotreatment with the EA fraction. Biological markers of aging, such as p16INK4a, p21WAF1, and senescence-associated β-gal levels, were induced by UVB treatment but significantly suppressed following EA-fraction treatment. UVB-induced upregulation of matrix metalloproteinase (MMP)-1 and downregulation of COL1A1 were also reversed by EA-fraction treatment in both cells and a 3D skin model, which resulted in increased keratin and collagen deposition. Moreover, EA-fraction treatment inhibited the phosphorylation of MAPKs (p38, ERK, and JNK) and nuclear factor (NF-)-kB and decreased the levels of inflammatory cytokines in UVB-treated cells. The results indicate that an EA fraction from ADLE ameliorates UVB-induced degradation of COL1A1 by inhibiting MMP expression and inactivating the MAPK/NF-κB p65/AP-1 signaling pathway involved in this process.
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Affiliation(s)
- Kyong Kim
- Department of Food and Nutrition, Eulji University, Seongnam 13135, Republic of Korea; (K.K.); (C.-E.K.)
| | - Chae-Eun Kim
- Department of Food and Nutrition, Eulji University, Seongnam 13135, Republic of Korea; (K.K.); (C.-E.K.)
| | - Dong-Jae Baek
- College of Pharmacy, Mokpo National University, Mokpo 58554, Republic of Korea; (D.-J.B.); (E.-Y.P.)
| | - Eun-Young Park
- College of Pharmacy, Mokpo National University, Mokpo 58554, Republic of Korea; (D.-J.B.); (E.-Y.P.)
| | - Yoon Sin Oh
- Department of Food and Nutrition, Eulji University, Seongnam 13135, Republic of Korea; (K.K.); (C.-E.K.)
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Kim K, Park EY, Baek DJ, Lee CS, Oh YS. Antiphotoaging effects of solvent fractions isolated from Allomyrina dichotoma larvae extract. Biochem Biophys Rep 2024; 38:101660. [PMID: 38375419 PMCID: PMC10875253 DOI: 10.1016/j.bbrep.2024.101660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Revised: 01/16/2024] [Accepted: 02/05/2024] [Indexed: 02/21/2024] Open
Abstract
Skin aging is affected by a variety of factors, including ultraviolet rays, oxidative stress, medications, smoking, and genetics. Among them, photo-aging accounts for about 80% of skin aging. The present study was evaluated to verify the potential of Allomyrina dichotoma larvae, which has recently been attracting attention as an edible insect, as an anti-aging substance. UVB irradiation at 100 mJ/cm2 was sufficient to induce photo-aging of fibroblasts within 24 h, which was alleviated after treatment with 70% ethanol extract of Allomyrina dichotoma larvae extract (ADLE). To obtain an extract from ADLE, which has a relatively high content of polyphenol compounds containing physiological activity, fractional solvent extraction was carried out using organic solvents such as hexane, chloroform, ethyl acetate, and butanol. Additionally, ethyl acetate and butanol fractions contributed to the inhibition of UVB-induced ROS production, cell damage, and senescence of fibroblasts. It was also confirmed that the two fractions can regulate the expression of MMP-1 and AP-1. In particular, the ethyl acetate fraction showed an excellent effect in recovering collagen decomposed by UVB. Therefore, these results suggest that ADLE has potential as a natural insect-derived biomaterial to inhibit UVB-induced photo-aging.
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Affiliation(s)
- Kyong Kim
- Department of Food and Nutrition, Eulji University, Seongnam, South Korea
| | - Eun-Young Park
- College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Jeonnam, South Korea
| | - Dong-Jae Baek
- College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Jeonnam, South Korea
| | - Chang-Seok Lee
- Department of Beauty and Cosmetic Science, Eulji University, Seongnam, South Korea
| | - Yoon Sin Oh
- Department of Food and Nutrition, Eulji University, Seongnam, South Korea
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Liu N, Zhang P, Xue M, Zhang M, Huang Z, Xu C, Meng Y, Fan Y, Liu W, Zhang F, Chen P, Zhou Y. Hypolipidemic Effect of Rice Bran Oil Extract Tocotrienol in High-Fat Diet-Induced Hyperlipidemia Zebrafish (Danio Rerio) Induced by High-Fat Diet. Int J Mol Sci 2024; 25:2954. [PMID: 38474201 DOI: 10.3390/ijms25052954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 02/23/2024] [Accepted: 02/24/2024] [Indexed: 03/14/2024] Open
Abstract
In recent years, the potent influence of tocotrienol (T3) on diminishing blood glucose and lipid concentrations in both Mus musculus (rats) and Homo sapiens (humans) has been established. However, the comprehensive exploration of tocotrienol's hypolipidemic impact and the corresponding mechanisms in aquatic species remains inadequate. In this study, we established a zebrafish model of a type 2 diabetes mellitus (T2DM) model through high-fat diet administration to zebrafish. In the T2DM zebrafish, the thickness of ocular vascular walls significantly increased compared to the control group, which was mitigated after treatment with T3. Additionally, our findings demonstrate the regulatory effect of T3 on lipid metabolism, leading to the reduced synthesis and storage of adipose tissue in zebrafish. We validated the expression patterns of genes relevant to these processes using RT-qPCR. In the T2DM model, there was an almost two-fold upregulation in pparγ and cyp7a1 mRNA levels, coupled with a significant downregulation in cpt1a mRNA (p < 0.01) compared to the control group. The ELISA revealed that the protein expression levels of Pparγ and Rxrα exhibited a two-fold elevation in the T2DM group relative to the control. In the T3-treated group, Pparγ and Rxrα protein expression levels consistently exhibited a two-fold decrease compared to the model group. Lipid metabolomics showed that T3 could affect the metabolic pathways of zebrafish lipid regulation, including lipid synthesis and decomposition. We provided experimental evidence that T3 could mitigate lipid accumulation in our zebrafish T2DM model. Elucidating the lipid-lowering effects of T3 could help to minimize the detrimental impacts of overfeeding in aquaculture.
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Affiliation(s)
- Naicheng Liu
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
| | - Peng Zhang
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
| | - Mingyang Xue
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
| | - Mengwei Zhang
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
| | - Zhenyu Huang
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
| | - Chen Xu
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
| | - Yan Meng
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
| | - Yuding Fan
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
| | - Wei Liu
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
| | - Feixiang Zhang
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
- College of Fisheries and Life, Shanghai Ocean University, Shanghai 201306, China
| | - Peng Chen
- Institute of Fishery Research of Xinjiang Uygur Autonenous Region, Urumqi 830099, China
| | - Yong Zhou
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan 430223, China
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Lin H, Li J, Sun M, Wang X, Zhao J, Zhang W, Lv G, Wang Y, Lin Z. Effects of hazelnut soluble dietary fiber on lipid-lowering and gut microbiota in high-fat-diet-fed rats. Int J Biol Macromol 2024; 256:128538. [PMID: 38043651 DOI: 10.1016/j.ijbiomac.2023.128538] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 11/14/2023] [Accepted: 11/29/2023] [Indexed: 12/05/2023]
Abstract
Hazelnut is one of the most popular nuts in the world, rich in nutrients and various active substances. In this study, soluble dietary fiber (SDF) was extracted from hazelnut kernels, and its physicochemical properties and absorbability were explored. Hazelnut-SDF exhibited ideal water-holding, oil-holding and swelling capacity, and glucose, cholesterol and cholate absorbing ability. Scanning electron microscopy and fourier transform infrared spectroscopy showed that hazelnut-SDF had typical polysaccharide structure of functional groups. The main monosaccharides were identified as arabinose, rhamnose, xylose, ribose, glucuronic acid, mannose and glucose by gas chromatography-mass spectrometry. In high-fat diet rats, hazelnut-SDF could improve serum lipid parameters, inhibit lipid accumulation in liver and adipocytes, and regulate the expression level of liver lipid synthesis-related genes. It also could adjust intestinal short chain fatty acids, promote the composition and structure of intestinal microbiota, and significantly balance the abundance of Alloprevotella, Fusicatenibacter, Lactobacillus, Roseburia, Ruminococcaceae_UCG-005, Ruminococcaceae_UCG-014 and Clostridiales. The results concluded that oral administration of hazelnut-SDF could alleviate hyperlipidemia and obesity, and might serve as a potential functional food ingredient.
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Affiliation(s)
- He Lin
- College of Pharmacy, Changchun University of Chinese Medicine, Changchun, China.
| | - Jun Li
- College of Pharmacy, Changchun University of Chinese Medicine, Changchun, China
| | - Mingyang Sun
- College of Pharmacy, Changchun University of Chinese Medicine, Changchun, China
| | - Xinhe Wang
- College of Pharmacy, Changchun University of Chinese Medicine, Changchun, China
| | - Jiarui Zhao
- College of Pharmacy, Changchun University of Chinese Medicine, Changchun, China
| | - Wenjing Zhang
- College of Pharmacy, Changchun University of Chinese Medicine, Changchun, China
| | - Guangfu Lv
- College of Pharmacy, Changchun University of Chinese Medicine, Changchun, China
| | - Yuchen Wang
- College of Pharmacy, Changchun University of Chinese Medicine, Changchun, China
| | - Zhe Lin
- College of Pharmacy, Changchun University of Chinese Medicine, Changchun, China.
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Abstract
AIM Fibrosis is a common pathological feature of most types of chronic liver injuries. There is no specific treatment for liver fibrosis at present. The liver microenvironment, which fosters the survival and activity of liver cells, plays an important role in maintaining the normal structure and physiological function of the liver. The aim of this review is to deeply understand the role of the liver microenvironment in the dynamic and complicated development of liver fibrosis. METHODS After searching in Elsevier ScienceDirect, PubMed and Web of Science databases using 'liver fibrosis' and 'microenvironment' as keywords, studies related to microenvironment in liver fibrosis was compiled and examined. RESULTS The homeostasis of the liver microenvironment is disrupted during the development of liver fibrosis, affecting liver cell function, causing various types of cell reactions, and changing the cell-cell and cell-matrix interactions, eventually affecting fibrosis formation. CONCLUSION Liver microenvironment may be important for identifying potential therapeutic targets, and restoring microenvironment homeostasis may be an important strategy for promoting the reversal of liver fibrosis.KEY MESSAGESThe homeostasis of the liver microenvironment is disrupted in liver fibrosis;A pro-fibrotic microenvironment is formed during the development of liver fibrosis;Restoring microenvironment homeostasis may be an important strategy for promoting the reversal of liver fibrosis.
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Affiliation(s)
- Ying Meng
- Department of General Medicine, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Tong Zhao
- Department of Orthopedics, Lanzhou University First Hospital, Lanzhou, Gansu, China
| | - Zhengyi Zhang
- Department of General Medicine, Lanzhou University Second Hospital, Lanzhou, Gansu, China
| | - Dekui Zhang
- Department of Gastroenterology, Lanzhou University Second Hospital, Lanzhou, Gansu, China
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Li A, Wang J, Wang Y, Zhang B, Chen Z, Zhu J, Wang X, Wang S. Tartary Buckwheat (Fagopyrum tataricum) Ameliorates Lipid Metabolism Disorders and Gut Microbiota Dysbiosis in High-Fat Diet-Fed Mice. Foods 2022; 11:foods11193028. [PMID: 36230104 PMCID: PMC9563051 DOI: 10.3390/foods11193028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 09/20/2022] [Accepted: 09/27/2022] [Indexed: 11/16/2022] Open
Abstract
Jinqiao II, a newly cultivated variety of tartary buckwheat (Fagopyrum tataricum), has been reported to exhibit a higher yield and elevated levels of functional compounds compared to traditional native breeds. We aimed to investigate the potential of Jinqiao II tartary buckwheat to alleviate lipid metabolism disorders by detecting serum biochemistry, pathological symptoms, gene expression profiling, and gut microbial diversity. C57BL/6J mice were provided with either a normal diet; a high-fat diet (HFD); or HFD containing 5%, 10%, and 20% buckwheat for 8 weeks. Our results indicate that Jinqiao II tartary buckwheat attenuated HFD-induced hyperlipidemia, fat accumulation, hepatic damage, endotoxemia, inflammation, abnormal hormonal profiles, and differential lipid-metabolism-related gene expression at mRNA and protein levels in response to the dosages, and high-dose tartary buckwheat exerted optimal outcomes. Gut microbiota sequencing also revealed that the Jinqiao II tartary buckwheat elevated the level of microbial diversity and the abundance of advantageous microbes (Alistipes and Alloprevotella), lowered the abundance of opportunistic pathogens (Ruminococcaceae, Blautia, Ruminiclostridium, Bilophila, and Oscillibacter), and altered the intestinal microbiota structure in mice fed with HFD. These findings suggest that Jinqiao II tartary buckwheat might serve as a competitive candidate in the development of functional food to prevent lipid metabolic abnormalities.
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Affiliation(s)
- Ang Li
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong 030801, China
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300350, China
| | - Jin Wang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300350, China
| | - Yuanyifei Wang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300350, China
| | - Bowei Zhang
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300350, China
| | - Zhenjia Chen
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong 030801, China
| | - Junling Zhu
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong 030801, China
| | - Xiaowen Wang
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong 030801, China
- Institute of Medicinal Plant, Shanxi Agricultural University, Jinzhong 030801, China
| | - Shuo Wang
- College of Food Science and Engineering, Shanxi Agricultural University, Jinzhong 030801, China
- Tianjin Key Laboratory of Food Science and Health, School of Medicine, Nankai University, Tianjin 300350, China
- Correspondence: ; Tel.: +86-22-8535-8445
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Liao M, Zhang R, Wang Y, Mao Z, Wu J, Guo H, Zhang K, Jing Y, Zhang C, Song H, Chen X, Wei G. Corilagin prevents non-alcoholic fatty liver disease via improving lipid metabolism and glucose homeostasis in high fat diet-fed mice. Front Nutr 2022; 9:983450. [PMID: 36071929 PMCID: PMC9443665 DOI: 10.3389/fnut.2022.983450] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 07/27/2022] [Indexed: 12/19/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) has been considered to be one of the most common chronic liver diseases. However, no validated pharmacological therapies have been officially proved in clinic due to its complex pathogenesis. The purpose of this study was to examine the protective effects of Corilagin (referred to Cori) against NAFLD in mice under a high fat diet (HFD) condition. Mice were fed either a normal control diet (NCD) or HFD with or without Cori (5 or 10 mg/kg body weight) for 15 weeks. In our results, Cori treatment significantly attenuated HFD-induced hepatic steatosis, high NAFLD activity score (NAD) and liver injury. Consistently, Cori treatment remarkably alleviated HFD-induced hepatic lipid accumulation (e.g., triglycerides (TG) and total cholesterol (TC) contents in liver), and improved plasma lipid concentrations (e.g., plasma TG, TC, low-density lipoprotein cholesterol (LDL-c), high-density lipoprotein cholesterol (HDL-c)). Moreover, Cori treatment ameliorated NAFLD associated metabolic disorders such as glucose intolerance and insulin resistance in HFD-fed mice. Additionally, Cori treatment dramatically changed HFD-induced liver gene expression profiles, and identified overlapped differentially expressed genes (DEGs) between NCD vs. HFD group and HFD vs. HCR (high fat diet plus treatment with Cori) group. With these DEGs, we observed a marked enrichment of Gene Ontology (GO) terms and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways, which were closely associated with the metabolic balance in liver. Particularly, we found several potential hub proteins against NAFLD development with analyses of protein-protein interaction (PPI) network and qPCR assays. Collectively, our results revealed the important protective effects of Cori against the progress of NAFLD, which was probably mediated through improving dysregulated lipid metabolism and insulin resistance in HFD-fed mice. Additionally, Cori-dependent overlapped DEGs might serve as a featured NAFLD-associated gene expression signature for the diagnosis, treatment, as well as drug discovery and development of NAFLD in the near future.
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Affiliation(s)
- Mingjuan Liao
- Department of Traditional Chinese Medicine, The Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Rong Zhang
- Department of Nephrology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yongling Wang
- Department of Traditional Chinese Medicine, The Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Yongling Wang,
| | - Ziming Mao
- The Core Laboratory in Medical Center of Clinical Research, Department of Molecular Diagnostics & Endocrinology, Shanghai Ninth People’s Hospital, State Key Laboratory of Medical Genomics, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jing Wu
- The Core Laboratory in Medical Center of Clinical Research, Department of Molecular Diagnostics & Endocrinology, Shanghai Ninth People’s Hospital, State Key Laboratory of Medical Genomics, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Huaqi Guo
- The Core Laboratory in Medical Center of Clinical Research, Department of Molecular Diagnostics & Endocrinology, Shanghai Ninth People’s Hospital, State Key Laboratory of Medical Genomics, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Kaiwen Zhang
- The Core Laboratory in Medical Center of Clinical Research, Department of Molecular Diagnostics & Endocrinology, Shanghai Ninth People’s Hospital, State Key Laboratory of Medical Genomics, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yu Jing
- The Core Laboratory in Medical Center of Clinical Research, Department of Molecular Diagnostics & Endocrinology, Shanghai Ninth People’s Hospital, State Key Laboratory of Medical Genomics, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Caoxu Zhang
- The Core Laboratory in Medical Center of Clinical Research, Department of Molecular Diagnostics & Endocrinology, Shanghai Ninth People’s Hospital, State Key Laboratory of Medical Genomics, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Huaidong Song
- The Core Laboratory in Medical Center of Clinical Research, Department of Molecular Diagnostics & Endocrinology, Shanghai Ninth People’s Hospital, State Key Laboratory of Medical Genomics, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xia Chen
- Department of Endocrinology, Shanghai Gongli Hospital, Shanghai, China
- Xia Chen,
| | - Gang Wei
- Department of Traditional Chinese Medicine, The Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- The Core Laboratory in Medical Center of Clinical Research, Department of Molecular Diagnostics & Endocrinology, Shanghai Ninth People’s Hospital, State Key Laboratory of Medical Genomics, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Hangzhou, China
- Beijing Key Laboratory of Diabetes Research and Care, Department of Endocrinology, Beijing Diabetes Institute, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- *Correspondence: Gang Wei,
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Wu J, Jia RB, Luo D, Li ZR, Lin L, Zheng Q, Zhao M. Sargassum fusiforme polysaccharide is a potential auxiliary substance for metformin in the management of diabetes. Food Funct 2022; 13:3023-3035. [PMID: 35199116 DOI: 10.1039/d1fo02165f] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The present study investigated the positive effects of relatively low-dose metformin combined with Sargassum fusiforme polysaccharide (LMET-SFP) in high-fat diet and streptozotocin-induced diabetic rats, and explored the underlying mechanisms of LMET-SFP as compared to metformin alone in managing diabetes. The results indicate that both metformin and LMET-SFP can attenuate body weight loss and ameliorate hyperglycemia, insulin resistance and hyperlipidemia, and LMET-SFP exhibited better effects in lowering fasting blood glucose levels, insulin resistance index and serum cholesterol compared to metformin only. The administration of LMET-SFP could ameliorate liver dysfunction in diabetic rats. In addition, fecal bile acid data implied that LMET-SFP intervention contributed to an increase in fecal total bile acids, ursodesoxycholic acid and tauroursodesoxycholic acid profiles when compared to metformin treatment. Additionally, intestinal microbiological analysis showed that the acknowledged probiotics Lactobacillus and Bifidobacterium exhibited higher levels in the LMET-SFP group compared to the metformin group. RT-qPCR results demonstrated that the better hypoglycemic effects of LMET-SFP were mainly attributed to the down-regulation of 3-hydroxy-3-methylglutaryl-coenzyme A, cytosolic phosphoenolpyruvate carboxykinase and glucose-6-phosphatase expression, and the up-regulation of cholesterol 7α-hydroxylase expression, in contrast to metformin alone. These results suggest that SFP may be used as an auxiliary hypoglycemic substance for metformin in the future.
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Affiliation(s)
- Juan Wu
- Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory, Chaozhou 521000, China.
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Rui-Bo Jia
- Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory, Chaozhou 521000, China.
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Donghui Luo
- Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory, Chaozhou 521000, China.
- School of Food Science and Engineering, Guangdong Ocean University, Yangjiang 529500, China
| | - Zhao-Rong Li
- Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory, Chaozhou 521000, China.
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Lianzhu Lin
- Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory, Chaozhou 521000, China.
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Qianwen Zheng
- Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory, Chaozhou 521000, China.
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
| | - Mouming Zhao
- Chaozhou Branch of Chemistry and Chemical Engineering Guangdong Laboratory, Chaozhou 521000, China.
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, China
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Li R, Tan CP, Xu Y, Liu Y. Alteration of Endogenous Fatty Acids Profile and Lipid Metabolism in Rats Caused by a High‐Colleseed Oil and a High‐Sunflower Oil Diet. EUR J LIPID SCI TECH 2021. [DOI: 10.1002/ejlt.202100100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ruizhi Li
- State Key Laboratory of Food Science and Technology School of Food Science and Technology National Engineering Research Center for Functional Food National Engineering Laboratory for Cereal Fermentation Technology Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province Jiangnan University 1800 Lihu Road Wuxi Jiangsu 214122 P. R. China
| | - Chin Ping Tan
- Department of Food Technology Faculty of Food Science and Technology Universiti Putra Malaysia Serdang Selangor 43400 Malaysia
| | - Yong‐Jiang Xu
- State Key Laboratory of Food Science and Technology School of Food Science and Technology National Engineering Research Center for Functional Food National Engineering Laboratory for Cereal Fermentation Technology Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province Jiangnan University 1800 Lihu Road Wuxi Jiangsu 214122 P. R. China
| | - Yuanfa Liu
- State Key Laboratory of Food Science and Technology School of Food Science and Technology National Engineering Research Center for Functional Food National Engineering Laboratory for Cereal Fermentation Technology Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province Jiangnan University 1800 Lihu Road Wuxi Jiangsu 214122 P. R. China
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Gryllus bimaculatus Extract Protects against Lipopolysaccharide-Derived Inflammatory Response in Human Colon Epithelial Caco-2 Cells. INSECTS 2021; 12:insects12100873. [PMID: 34680642 PMCID: PMC8540076 DOI: 10.3390/insects12100873] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/16/2021] [Accepted: 09/23/2021] [Indexed: 12/11/2022]
Abstract
Simple Summary Inflammatory bowel disease (IBD), a potentially life-threatening disease, is characterized by increased tight junction permeability and overproduction of proinflammatory cytokines. The long-term administration of recognized chemotherapeutic agents can cause serious potential side effects. As such, increasing attention has been paid to natural, low-toxicity products with anti-inflammatory properties for treating IBD. We assessed the potential utility of the edible cricket species Gryllus bimaculatus for anti-inflammatory and cytoprotective effects in the human epithelial cell line Caco-2, following treatment with an inflammatory lipopolysaccharide stimulus. We found that aqueous ethanolic G. bimaculatus extract (AE-GBE) treatment increased cell viability and significantly reduced inflammatory mediators. Moreover, AE-GBE significantly reduced inflammatory cytokine expression levels, intestinal epithelial permeability, and related tight junction protein expression levels. In conclusion, AE-GBE can protect epithelial cells from lipopolysaccharide-induced impaired barrier integrity by increasing tight junction proteins and preventing various inflammatory mediators. These results may be used to pursue further use of natural insect extracts in treating IBD. Abstract Increased tight junction permeability and overproduction of proinflammatory cytokines are crucial pathophysiological mechanisms in inflammatory bowel disease (IBD). This study evaluated anti-inflammatory effects of aqueous ethanolic Gryllus bimaculatus extract (AE-GBE) against intestinal permeability on lipopolysaccharide (LPS)-treated Caco-2 cells. Treatment with AE-GBE increased cell viability and significantly reduced inflammatory mediators such as nitric oxide and LPS-induced reactive oxidative stress. LPS increased the expression levels of iNOS, Cox-2, and 4-hydroxylnonenal; however, these levels were attenuated by AE-GBE treatment. Moreover, the mRNA and protein expression levels of the inflammatory cytokines TNFα, IL-6, IL-1β, and IFNγ were increased by LPS, but were significantly reduced by AE-GBE treatment. Intestinal epithelial permeability and the related expression of the proteins Zoula ocludence-1, occludin, and claudin-1 was increased by LPS treatment, and this effect was significantly reduced by AE-GBE treatment. The reduction in AMPK phosphorylation in LPS-treated Caco-2 cells was reversed in activation by co-treatment with AE-GBE. In conclusion, AE-GBE can protect epithelial cells from LPS-induced impaired barrier integrity by increasing tight junction proteins and preventing various inflammatory mediators. Thus, AE-GBE has the potential to improve inflammation-related diseases, including IBD, by inhibiting excessive production of inflammation-inducing mediators.
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Li TT, Huang ZR, Jia RB, Lv XC, Zhao C, Liu B. Spirulina platensis polysaccharides attenuate lipid and carbohydrate metabolism disorder in high-sucrose and high-fat diet-fed rats in association with intestinal microbiota. Food Res Int 2021; 147:110530. [PMID: 34399508 DOI: 10.1016/j.foodres.2021.110530] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 06/07/2021] [Accepted: 06/15/2021] [Indexed: 02/08/2023]
Abstract
This study aimed to evaluate the possibility that Spirulina platensis crude polysaccharides may ameliorate the lipid and carbohydrate metabolism disorder, including obesity, hyperlipidemia, hyperglycemia, hepatic steatosis, and gut dysbiosis. The results showed Spirulina platensis crude polysaccharides could improve body weight, serum/liver lipid and carbohydrate indexes, and liver antioxidant parameters in high-sucrose and high-fat diet (HFD)-fed rats, which were accompanied by regulated liver mRNA expressions involved in lipid and carbohydrate metabolism disorder. In addition, SPLP intervention significantly decreased cecal level of propionic acid in HFD-fed rats. Notably, the SPLP could alter the relative abundance of Firmicutes, Bacteroides, Proteobacteria, and Actinobacteria at phylum levels. Based on Spearman's rank correlation coefficient, serum/liver lipid and carbohydrate profiles were found significantly positively correlated with genera Romboutsia, Allobaculum, Blautia, Phascolarctobacterium, Bifidobacterium, Coprococcus, Turicibacter, Erysipelotrichaceae_unclassified, Olsenella, Escherichia/Shigella, Coprobacillus, Lachnospiracea incertae, and Lactobacillus, but strongly negatively correlated with genera Atopostipes, Flavonifractor, Porphyromonadaceae_unclassified, Barnesiella, Oscillibacter, Paraprevotella, Jeotgalicoccus, Corynebacterium, Alloprevotella and Bacteroides. It was concluded that oral administration of SPLP could remarkably ameliorate the lipid and carbohydrate metabolism disorder and significantly modulate the intestinal microbiota in HFD-fed rats.
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Affiliation(s)
- Tian-Tian Li
- Engineering Research Centre of Fujian Taiwan Special Marine Food Processing and Nutrition, Ministry of Education, Fuzhou 350002, China; College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Zi-Rui Huang
- Engineering Research Centre of Fujian Taiwan Special Marine Food Processing and Nutrition, Ministry of Education, Fuzhou 350002, China; College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Rui-Bo Jia
- Engineering Research Centre of Fujian Taiwan Special Marine Food Processing and Nutrition, Ministry of Education, Fuzhou 350002, China; College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China
| | - Xu-Cong Lv
- Engineering Research Centre of Fujian Taiwan Special Marine Food Processing and Nutrition, Ministry of Education, Fuzhou 350002, China; College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China; National Engineering Research Center of JUNCAO Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China; Institute of Food Science and Technology, College of Biological Science and Technology, Fuzhou University, Fuzhou, Fujian 350108, China.
| | - Chao Zhao
- Engineering Research Centre of Fujian Taiwan Special Marine Food Processing and Nutrition, Ministry of Education, Fuzhou 350002, China; College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Bin Liu
- Engineering Research Centre of Fujian Taiwan Special Marine Food Processing and Nutrition, Ministry of Education, Fuzhou 350002, China; College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China; National Engineering Research Center of JUNCAO Technology, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
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12
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Anti-Inflammatory Activity of AF-13, an Antioxidant Compound Isolated from the Polar Fraction of Allomyrina dichotoma Larva, in Palmitate-Induced INS-1 Cells. Life (Basel) 2021; 11:life11060470. [PMID: 34073736 PMCID: PMC8225099 DOI: 10.3390/life11060470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 05/21/2021] [Accepted: 05/21/2021] [Indexed: 11/17/2022] Open
Abstract
This study was conducted to evaluate the fractions isolated from Allomyrina dichotoma larva extract (ADLE) that exhibited anti-apoptotic and anti-inflammatory effects. A total of 13 fractions were eluted from ADLE by centrifugal chromatography (CPC), and the polar AF-13 fraction was selected, which exerted a relatively protective effect against fat-induced toxicity in INS-1 cells. AF-13 treatment of palmitate-treated INS-1 cells decreased the expression level of apoptosis-related proteins and DNA fragmentation. AF-13 also significantly inhibited the production of nitric oxide and reactive oxygen species and the triglyceride content induced by palmitate, and the effect was found to be similar to that with ADLE treatment. Palmitate upregulated the expression of cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS) through the activation of NF-κB p65; however, this effect was significantly attenuated by AF-13 treatment. In conclusion, AF-13 is one of the major components of ADLE responsible for anti-apoptotic and anti-inflammatory activities.
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13
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Gao Y, Zhao YJ, Xu ML, Shi SS. Soybean hawkmoth ( Clanis bilineata tsingtauica) as food ingredients: a review. CYTA - JOURNAL OF FOOD 2021. [DOI: 10.1080/19476337.2021.1903082] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yu Gao
- College of Plant Protection, Jilin Agricultural University, Changchun, Jilin, P.R. China
| | - Yi-Jin Zhao
- College of Plant Protection, Jilin Agricultural University, Changchun, Jilin, P.R. China
| | - Meng-Lei Xu
- College of Food Science and Engineering, Jilin University, Changchun, Jilin, P.R. China
- State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun, Jilin, P.R. China
| | - Shu-Sen Shi
- College of Plant Protection, Jilin Agricultural University, Changchun, Jilin, P.R. China
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Kim K, Kwak MK, Bae GD, Park EY, Baek DJ, Kim CY, Jang SE, Jun HS, Oh YS. Allomyrina dichotoma larva extract attenuates free fatty acid-induced lipotoxicity in pancreatic beta cells. Nutr Res Pract 2021; 15:294-308. [PMID: 34093971 PMCID: PMC8155218 DOI: 10.4162/nrp.2021.15.3.294] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 09/28/2020] [Accepted: 12/09/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUD/OBJECTIVES Allomyrina dichotoma larva (ADL), one of the many edible insects recognized as future food resources, has a range of pharmacological activities. In a previous study, an ADL extract (ADLE) reduced the hepatic insulin resistance of high-fat diet (HFD)-induced diabetic mice. On the other hand, the associated molecular mechanisms underlying pancreatic beta-cell dysfunction remain unclear. This study examined the effects of ADLE on palmitate-induced lipotoxicity in a beta cell line of a rat origin, INS-1 cells. MATERIALS/METHODS ADLE was administered to high-fat diet treated mice. The expression of apoptosis-related molecules was measured by Western blotting, and reactive oxidative stress generation and nitric oxide production were measured by DCH-DA fluorescence and a Griess assay, respectively. RESULTS The administration of ADLE to HFD-induced diabetic mice reduced the hyperplasia, 4-hydroxynonenal levels, and the number of apoptotic cells while improving the insulin levels compared to the HFD group. Treatment of INS-1 cells with palmitate reduced insulin secretion, which was attenuated by the ADLE treatment. Furthermore, the ADLE treatment prevented palmitate-induced cell death in INS-1 cells and isolated islets by reducing the apoptotic signaling molecules, including cleaved caspase-3 and PARP, and the Bax/Bcl2 ratio. ADLE also reduced the levels of reactive oxygen species generation, lipid accumulation, and nitrite production in palmitate-treated INS-1 cells while increasing the ATP levels. This effect corresponded to the decreased expression of inducible nitric oxide synthase (iNOS) mRNA and protein. CONCLUSIONS ADLE helps prevent lipotoxic beta-cell death in INS-1 cells and HFD-diabetic mice, suggesting that ADLE can be used to prevent or treat beta-cell damage in glucose intolerance during the development of diabetes.
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Affiliation(s)
- Kyong Kim
- Department of Food Nutrition, College of Bio Convergence, Eulji University, Seongnam 13135, Korea
| | - Min-Kyu Kwak
- Department of Food Nutrition, College of Bio Convergence, Eulji University, Seongnam 13135, Korea
| | - Gong-Deuk Bae
- Institute of Lee Gil Ya Cancer and Diabetes, Department of Molecular Medicine, Gachon University, Incheon 21999, Korea
| | - Eun-Young Park
- College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Muan 58554, Korea
| | - Dong-Jae Baek
- College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Muan 58554, Korea
| | - Chul-Young Kim
- College of Pharmacy, Hanyang University, Ansan 15588, Korea
| | - Se-Eun Jang
- Department of Food Nutrition, College of Bio Convergence, Eulji University, Seongnam 13135, Korea
| | - Hee-Sook Jun
- College of Pharmacy and Gachon Institute of Pharmaceutical Science, Gachon University, Incheon 21936, Korea
| | - Yoon Sin Oh
- Department of Food Nutrition, College of Bio Convergence, Eulji University, Seongnam 13135, Korea
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15
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Kim K, Bae GD, Park EY, Baek DJ, Kim CY, Jang SE, Oh YS. Allomyrina dichotoma larval extract attenuates intestinal barrier disruption by altering inflammatory response and tight junction proteins in lipopolysaccharide-induced Caco-2 cells. Biochem Biophys Res Commun 2020; 532:145-150. [PMID: 32828534 DOI: 10.1016/j.bbrc.2020.08.034] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 08/12/2020] [Indexed: 12/16/2022]
Abstract
Intestinal epithelial cells form a barrier between the intestinal lumen and host connective tissues and play an important role in maintaining intestinal nutrient homeostasis. This study investigated effects of Allomyrina dichotoma (rhinoceros beetle) larval extract (ADLE) on the intestinal barrier damage and explored mechanisms for reversing intestinal barrier dysfunction in lipopolysaccharide (LPS)-stimulated Caco-2, human intestinal epithelial cells. LPS reduced intestinal epithelial barrier function by increasing transepithelial electrical resistance, and this effect was significantly attenuated by ADLE treatment. ADLE also significantly countered the inhibition of tight junction-related protein expression in both LPS-induced Caco-2 cells and intestine from HFD-induced mice. Moreover, ADLE significantly decreased expression and production of inflammatory factors, such as iNOS, cox-2, nitric oxide, and cytokines induced by LPS stimulus. Reduction in phosphorylation of adenosine monophosphate-activated protein kinase was averted by ADLE treatment in LPS treated INS-1 cells. Finally, reactive oxygen stress level was decreased and ATP production was increased by ADLE treatment. ADLE appears to display gut health-promoting effects by reducing inflammation and inducing tight junction proteins in Caco-2 cells. Therefore, ADLE might be useful for preventing or treating intestine cell damage in inflammatory bowel disease.
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Affiliation(s)
- Kyong Kim
- Department of Food Nutrition, Eulji University, Seongnam, South Korea
| | - Gong-Deuk Bae
- Institute of Lee Gil Ya Cancer and Diabetes, Dept. of Molecular Medicine, Gachon University, Incheon, South Korea
| | - Eun-Young Park
- College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Jeonnam, South Korea
| | - Dong Jae Baek
- College of Pharmacy and Natural Medicine Research Institute, Mokpo National University, Jeonnam, South Korea
| | - Chul Young Kim
- College of Pharmacy, Hanyang University, Ansan, South Korea
| | - Se-Eun Jang
- Department of Food Nutrition, Eulji University, Seongnam, South Korea
| | - Yoon Sin Oh
- Department of Food Nutrition, Eulji University, Seongnam, South Korea.
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16
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Ding H, Li Y, Li W, Tao H, Liu L, Zhang C, Kong T, Feng S, Li J, Wang X, Wu J. Epigallocatechin-3-gallate activates the AMP-activated protein kinase signaling pathway to reduce lipid accumulation in canine hepatocytes. J Cell Physiol 2020; 236:405-416. [PMID: 32572960 DOI: 10.1002/jcp.29869] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 05/16/2020] [Accepted: 05/24/2020] [Indexed: 12/19/2022]
Abstract
Epigallocatechin-3-gallate (EGCG) plays a crucial role in hepatic lipid metabolism. However, the underlying regulatory mechanism of hepatic lipid metabolism by EGCG in canine is unclear. Primary canine hepatocytes were treated with EGCG (0.01, 0.1, or 1 μM) and BML-275 (an AMP-activated protein kinase [AMPK] inhibitor) to study the effects of EGCG on the gene and protein expressions associated with AMPK signaling pathway. Data showed that treatment with EGCG had greater activation of AMPK, as well as greater expression levels and transcriptional activity of peroxisome proliferator activated receptor-α (PPARα) along with upregulated messenger RNA (mRNA) abundance and protein abundance of PPARα-target genes. EGCG decreased the expression levels and transcriptional activity of sterol regulatory element-binding protein 1c (SREBP-1c) along with downregulated mRNA abundance and protein abundance of SREBP-1c target genes. Of particular interest, exogenous BML-275 could reduce or eliminate the effects of EGCG on lipid metabolism in canine hepatocytes. Furthermore, the content of triglyceride was significantly decreased in the EGCG-treated groups. These results suggest that EGCG might be a potential agent in preventing high-fat diet-induced lipid accumulation in small animals.
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Affiliation(s)
- Hongyan Ding
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Yu Li
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Wei Li
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Huanqing Tao
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Leihong Liu
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Cai Zhang
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - Tao Kong
- College of Animal Science and Technology, Henan University of Science and Technology, Luoyang, China
| | - Shibin Feng
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Jinchun Li
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Xichun Wang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
| | - Jinjie Wu
- College of Animal Science and Technology, Anhui Agricultural University, Hefei, China
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Annunziata C, Lama A, Pirozzi C, Cavaliere G, Trinchese G, Di Guida F, Nitrato Izzo A, Cimmino F, Paciello O, De Biase D, Murru E, Banni S, Calignano A, Mollica MP, Mattace Raso G, Meli R. Palmitoylethanolamide counteracts hepatic metabolic inflexibility modulating mitochondrial function and efficiency in diet-induced obese mice. FASEB J 2019; 34:350-364. [PMID: 31914699 DOI: 10.1096/fj.201901510rr] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 10/08/2019] [Accepted: 10/21/2019] [Indexed: 12/17/2022]
Abstract
Peroxisome proliferator-activated receptor (PPAR)-α activation controls hepatic lipid homeostasis, stimulating fatty acid oxidation, and adapting the metabolic response to lipid overload and storage. Here, we investigate the effect of palmitoylethanolamide (PEA), an endogenous PPAR-α ligand, in counteracting hepatic metabolic inflexibility and mitochondrial dysfunction induced by high-fat diet (HFD) in mice. Long-term PEA administration (30 mg/kg/die per os) in HFD mice limited hepatic lipid accumulation, increased energy expenditure, and markedly reduced insulin resistance. In isolated liver mitochondria, we have demonstrated PEA capability to modulate mitochondrial oxidative capacity and energy efficiency, leading to the reduction of intracellular lipid accumulation and oxidative stress. Moreover, we have evaluated the effect of PEA on mitochondrial bioenergetics of palmitate-challenged HepG2 cells, using Seahorse analyzer. In vitro data showed that PEA recovered mitochondrial dysfunction and reduced lipid accumulation in insulin-resistant HepG2 cells, increasing fatty acid oxidation. Mechanistic studies showed that PEA effect on lipid metabolism was limited by AMP-activated protein kinase (AMPK) inhibition, providing evidence for a pivotal role of AMPK in PEA-induced adaptive metabolic setting. All these findings identify PEA as a modulator of hepatic lipid and glucose homeostasis, limiting metabolic inflexibility induced by nutrient overload.
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Affiliation(s)
- Chiara Annunziata
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Adriano Lama
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Claudio Pirozzi
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Gina Cavaliere
- Department of Biology, University of Naples Federico II, Naples, Italy
| | | | | | | | - Fabiano Cimmino
- Department of Biology, University of Naples Federico II, Naples, Italy
| | - Orlando Paciello
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - Davide De Biase
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - Elisabetta Murru
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, Cagliari, Italy
| | - Sebastiano Banni
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, Cagliari, Italy
| | - Antonio Calignano
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | | | | | - Rosaria Meli
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
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