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Han L, Wu L, Yin Q, Li L, Zheng X, Du S, Huang X, Bai L, Wang Y, Bian Y. A promising therapy for fatty liver disease: PCSK9 inhibitors. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 128:155505. [PMID: 38547616 DOI: 10.1016/j.phymed.2024.155505] [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: 10/30/2023] [Revised: 01/30/2024] [Accepted: 02/28/2024] [Indexed: 05/01/2024]
Abstract
BACKGROUND Fatty liver disease (FLD) poses a significant global health concern worldwide, with its classification into nonalcoholic fatty liver disease (NAFLD) and alcoholic fatty liver disease (AFLD) contingent upon the presence or absence of chronic and excessive alcohol consumption. The absence of specific therapeutic interventions tailored to FLD at various stages of the disease renders its treatment exceptionally arduous. Despite the fact that FLD and hyperlipidemia are intimately associated, there is still debate over how lipid-lowering medications affect FLD. Proprotein Convertase Subtilisin/ Kexin type 9 (PCSK9) is a serine protease predominantly synthesized in the liver, which has a crucial impact on cholesterol homeostasis. Research has confirmed that PCSK9 inhibitors have prominent lipid-lowering properties and substantial clinical effectiveness, thereby justifying the need for additional exploration of their potential role in FLD. PURPOSE Through a comprehensive literature search, this review is to identify the relationship and related mechanisms between PCSK9, lipid metabolism and FLD. Additionally, it will assess the pharmacological mechanism and applicability of PCSK9 inhibitors (including naturally occurring PCSK9 inhibitors, such as conventional herbal medicines) for the treatment of FLD and serve as a guide for updating the treatment protocol for such conditions. METHODS A comprehensive literature search was conducted using several electronic databases, including Pubmed, Medline, Embase, CNKI, Wanfang database and ClinicalTrials.gov, from the inception of the database to 30 Jan 2024. Key words used in the literature search were "fatty liver", "hepatic steatosis", "PCSK9", "traditional Chinese medicine", "herb medicine", "botanical medicine", "clinical trial", "vivo", "vitro", linked with AND/OR. Most of the included studies were within five years. RESULTS PCSK9 participates in the regulation of circulating lipids via both LDLR dependent and independent pathways, and there is a potential association with de novo lipogenesis. Major clinical studies have demonstrated a positive correlation between circulating PCSK9 levels and the severity of NAFLD, with elevated levels of circulating PCSK9 observed in individuals exposed to chronic alcohol. Numerous studies have demonstrated the potential of PCSK9 inhibitors to ameliorate non-alcoholic steatohepatitis (NASH), potentially completely alleviate liver steatosis, and diminish liver impairment. In animal experiments, PCSK9 inhibitors have exhibited efficacy in alleviating alcoholic induced liver lipid accumulation and hepatitis. Traditional Chinese medicine such as berberine, curcumin, resveratrol, piceatannol, sauchinone, lupin, quercetin, salidroside, ginkgolide, tanshinone, lunasin, Capsella bursa-pastoris, gypenosides, and Morus alba leaves are the main natural PCS9 inhibitors. Excitingly, by inhibiting transcription, reducing secretion, direct targeting and other pathways, traditional Chinese medicine exert inhibitory effects on PCSK9, thereby exerting potential FLD therapeutic effects. CONCLUSION PCSK9 plays an important role in the development of FLD, and PCSK9 inhibitors have demonstrated beneficial effects on lipid regulation and FLD in both preclinical and clinical studies. In addition, some traditional Chinese medicines have improved the disease progression of FLD by inhibiting PCSK9 and anti-inflammatory and antioxidant effects. Consequently, the inhibition of PCSK9 appears to be a promising therapeutic strategy for FLD.
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Affiliation(s)
- Lizhu Han
- Department of Pharmacy, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu 610072, China; Personalized Drug Therapy Key Laboratory of Sichuan Province, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China
| | - Liuyun Wu
- Department of Pharmacy, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu 610072, China
| | - Qinan Yin
- Department of Pharmacy, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu 610072, China; Personalized Drug Therapy Key Laboratory of Sichuan Province, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China
| | - Lian Li
- Department of Pharmacy, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu 610072, China
| | - Xingyue Zheng
- Department of Pharmacy, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu 610072, China
| | - Shan Du
- Department of Pharmacy, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu 610072, China; Personalized Drug Therapy Key Laboratory of Sichuan Province, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China
| | - Xuefei Huang
- Department of Pharmacy, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu 610072, China; Personalized Drug Therapy Key Laboratory of Sichuan Province, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China
| | - Lan Bai
- Department of Pharmacy, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu 610072, China; Personalized Drug Therapy Key Laboratory of Sichuan Province, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China.
| | - Yi Wang
- Clinical Immunology Translational Medicine Key Laboratory of Sichuan Province, Center of Organ Transplantation, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, Chengdu 610072, China.
| | - Yuan Bian
- Department of Pharmacy, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu 610072, China; Personalized Drug Therapy Key Laboratory of Sichuan Province, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China.
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Hua W, Peng L, Chen XM, Jiang X, Hu J, Jiang XH, Xiang X, Wan J, Long Y, Xiong J, Ma X, Du X. CD36-mediated podocyte lipotoxicity promotes foot process effacement. Open Med (Wars) 2024; 19:20240918. [PMID: 38584832 PMCID: PMC10996993 DOI: 10.1515/med-2024-0918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/07/2024] [Accepted: 02/09/2024] [Indexed: 04/09/2024] Open
Abstract
Background Lipid metabolism disorders lead to lipotoxicity. The hyperlipidemia-induced early stage of renal injury mainly manifests as podocyte damage. CD36 mediates fatty acid uptake and the subsequent accumulation of toxic lipid metabolites, resulting in podocyte lipotoxicity. Methods Male Sprague-Dawley rats were divided into two groups: the normal control group and the high-fat diet group (HFD). Podocytes were cultured and treated with palmitic acid (PA) and sulfo-N-succinimidyl oleate (SSO). Protein expression was measured by immunofluorescence and western blot analysis. Boron-dipyrromethene staining and Oil Red O staining was used to analyze fatty acid accumulation. Results Podocyte foot process (FP) effacement and marked proteinuria occurred in the HFD group. CD36 protein expression was upregulated in the HFD group and in PA-treated podocytes. PA-treated podocytes showed increased fatty acid accumulation, reactive oxygen species (ROS) production, and actin cytoskeleton rearrangement. However, pretreatment with the CD36 inhibitor SSO decreased lipid accumulation and ROS production and alleviated actin cytoskeleton rearrangement in podocytes. The antioxidant N-acetylcysteine suppressed PA-induced podocyte FP effacement and ROS generation. Conclusions CD36 participated in fatty acid-induced FP effacement in podocytes via oxidative stress, and CD36 inhibitors may be helpful for early treatment of kidney injury.
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Affiliation(s)
- Wei Hua
- Department of Nephrology, The First Affiliated Hospital of Chongqing Medical and Pharmaceutical College, Chongqing400000, China
| | - Lan Peng
- Basic Department, Chongqing Medical and Pharmaceutical College, Chongqing401331, China
| | - Xue-mei Chen
- Emergency Department, The First Affiliated Hospital of Chongqing Medical University, Chongqing400042, China
| | - XuShun Jiang
- Department of Nephrology, The First Affiliated Hospital of Chongqing Medical University, Chongqing400042, China
| | - JianGuo Hu
- Department of Obstetrics and Gynecology, Second Affiliated Hospital, Chongqing Medical University, Chongqing, China
| | - Xian-Hong Jiang
- Department of Nephrology, The First Affiliated Hospital of Chongqing Medical and Pharmaceutical College, Chongqing400000, China
| | - Xu Xiang
- Department of Nephrology, The First Affiliated Hospital of Chongqing Medical and Pharmaceutical College, Chongqing400000, China
| | - Jiangmin Wan
- Department of Nephrology, People’s Hospital of Qijiang District, Chongqing401420, China
| | - Yingfei Long
- Department of Obstetrics and Gynecology, The Third Affiliated Hospital of Chongqing Medical University, Chongqing, 401120, China
| | | | - Xueyi Ma
- Department of Nephrology, The First Affiliated Hospital of Chongqing Medical and Pharmaceutical College, Chongqing400000, China
| | - Xiaogang Du
- Department of Nephrology, The First Affiliated Hospital of Chongqing Medical University, Youyi Road 1, Chongqing 400042, China
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Maestri A, Garagnani P, Pedrelli M, Hagberg CE, Parini P, Ehrenborg E. Lipid droplets, autophagy, and ageing: A cell-specific tale. Ageing Res Rev 2024; 94:102194. [PMID: 38218464 DOI: 10.1016/j.arr.2024.102194] [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: 10/14/2023] [Revised: 12/22/2023] [Accepted: 01/08/2024] [Indexed: 01/15/2024]
Abstract
Lipid droplets are the essential organelle for storing lipids in a cell. Within the variety of the human body, different cells store, utilize and release lipids in different ways, depending on their intrinsic function. However, these differences are not well characterized and, especially in the context of ageing, represent a key factor for cardiometabolic diseases. Whole body lipid homeostasis is a central interest in the field of cardiometabolic diseases. In this review we characterize lipid droplets and their utilization via autophagy and describe their diverse fate in three cells types central in cardiometabolic dysfunctions: adipocytes, hepatocytes, and macrophages.
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Affiliation(s)
- Alice Maestri
- Division of Cardiovascular Medicine, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden; Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Paolo Garagnani
- Department of Medical and Surgical Sciences (DIMEC), University of Bologna, Bologna, Italy; IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Matteo Pedrelli
- Cardio Metabolic Unit, Department of Laboratory Medicine, and Department of Medicine (Huddinge), Karolinska Institutet, Stockholm, Sweden; Medicine Unit of Endocrinology, Theme Inflammation and Ageing, Karolinska University Hospital, Stockholm, Sweden
| | - Carolina E Hagberg
- Division of Cardiovascular Medicine, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden; Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Paolo Parini
- Cardio Metabolic Unit, Department of Laboratory Medicine, and Department of Medicine (Huddinge), Karolinska Institutet, Stockholm, Sweden; Medicine Unit of Endocrinology, Theme Inflammation and Ageing, Karolinska University Hospital, Stockholm, Sweden
| | - Ewa Ehrenborg
- Division of Cardiovascular Medicine, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden; Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden.
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Feng WW, Bang S, Takacs EM, Day C, Crawford KJ, Al-Sheyab R, Almufarrej DB, Wells W, Ilchenko S, Kasumov T, Kon N, Novak CM, Gu W, Kurokawa M. Hepatic Huwe1 loss protects mice from non-alcoholic fatty liver disease through lipid metabolic rewiring. iScience 2023; 26:108405. [PMID: 38047073 PMCID: PMC10692727 DOI: 10.1016/j.isci.2023.108405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 09/03/2023] [Accepted: 11/03/2023] [Indexed: 12/05/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is the most pervasive liver pathology worldwide. Here, we demonstrate that the ubiquitin E3 ligase Huwe1 is vital in NAFLD pathogenesis. Using mass spectrometry and RNA sequencing, we reveal that liver-specific deletion of Huwe1 (Huwe1LKO) in 1-year-old mice (approximately middle age in humans) elicits extensive lipid metabolic reprogramming that involves downregulation of de novo lipogenesis and fatty acid uptake, upregulation of fatty acid β-oxidation, and increased oxidative phosphorylation. ChEA transcription factor prediction analysis inferred these changes result from attenuated PPARɑ, LXR, and RXR activity in Huwe1LKO livers. Consequently, Huwe1LKO mice fed chow diet exhibited significantly reduced hepatic steatosis and superior glucose tolerance compared to wild-type mice. Huwe1LKO also conferred protection from high-fat diet-induced hepatic steatosis by 6-months of age, with increasingly robust differences observed as mice reached middle age. Together, we present evidence that Huwe1 plays a critical role in the development of age- and diet-induced NAFLD.
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Affiliation(s)
- William W. Feng
- Department of Molecular and Systems Biology, Geisel School of Medicine at Dartmouth, Hanover, NH 03755, USA
- Department of Biological Sciences, Kent State University, Kent, OH 44242, USA
| | - Scott Bang
- Department of Biological Sciences, Kent State University, Kent, OH 44242, USA
| | - Eric M. Takacs
- Department of Biological Sciences, Kent State University, Kent, OH 44242, USA
| | - Cora Day
- Department of Biological Sciences, Kent State University, Kent, OH 44242, USA
| | | | - Ruba Al-Sheyab
- School of Biomedical Sciences, Kent State University, Kent, OH 44240, USA
| | - Dara B. Almufarrej
- School of Biomedical Sciences, Kent State University, Kent, OH 44240, USA
| | - Wendy Wells
- Department of Pathology, Dartmouth-Hitchcock Medical Center, Lebanon, NH 03756, USA
| | - Serguei Ilchenko
- Department of Pharmaceutical Sciences, Northeast Ohio Medical University, Rootstown, OH 44272, USA
| | - Takhar Kasumov
- Department of Pharmaceutical Sciences, Northeast Ohio Medical University, Rootstown, OH 44272, USA
| | - Ning Kon
- Department of Pathology and Cell Biology, Columbia University, New York, NY 10032, USA
| | - Colleen M. Novak
- Department of Biological Sciences, Kent State University, Kent, OH 44242, USA
- School of Biomedical Sciences, Kent State University, Kent, OH 44240, USA
| | - Wei Gu
- Department of Pathology and Cell Biology, Columbia University, New York, NY 10032, USA
| | - Manabu Kurokawa
- Department of Biological Sciences, Kent State University, Kent, OH 44242, USA
- School of Biomedical Sciences, Kent State University, Kent, OH 44240, USA
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Fu Q, Frick JM, O'Neil MF, Eller OC, Morris EM, Thyfault JP, Christianson JA, Lane RH. Early-life stress perturbs the epigenetics of Cd36 concurrent with adult onset of NAFLD in mice. Pediatr Res 2023; 94:1942-1950. [PMID: 37479748 PMCID: PMC10665193 DOI: 10.1038/s41390-023-02714-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 05/03/2023] [Accepted: 06/15/2023] [Indexed: 07/23/2023]
Abstract
BACKGROUND Non-alcoholic fatty liver disease (NAFLD) is one of the most common liver diseases in the U.S. and worldwide. The roles of early postnatal life stress (EPLS) and the fatty acid translocase (CD36) on the pathogenesis of adult-onset NAFLD remain unknown. We hypothesized that EPLS, in the form of neonatal maternal separation (NMS), would predispose mice towards developing adult NAFLD, increase hepatic CD36 expression, and differentially methylate Cd36 promoter concurrently. METHODS NMS was performed on mice from postnatal day 1 to 21 and a high-fat/high-sucrose (HFS) diet was started at 4 weeks of age to generate four experimental groups: Naive-control diet (CD), Naive-HFS, NMS-CD, and NMS-HFS. RESULTS NMS alone caused NAFLD in adult male mice at 25 weeks of age. The effects of NMS and HFS were generally additive in terms of NAFLD, hepatic Cd36 mRNA levels, and hepatic Cd36 promoter DNA hypomethylation. Cd36 promoter methylation negatively correlated with Cd36 mRNA levels. Two differentially methylated regions (DMRs) within Cd36 promoter regions appeared to be vulnerable to NMS in the mouse. CONCLUSIONS Our findings suggest that NMS increases the risk of an individual, particularly male, towards NAFLD when faced with a HFS diet later in life. IMPACT The key message of this article is that neonatal maternal separation and a postweaning high-fat/high-sucrose diet increased the risk of an individual, particularly male, towards NAFLD in adult life. What this study adds to the existing literature includes the identification of two vulnerable differentially methylated regions in hepatic Cd36 promoters whose methylation levels very strongly negatively correlated with Cd36 mRNA. The impact of this article is that it provides an early-life environment-responsive gene/promoter methylation model and an animal model for furthering the mechanistic study on how the insults in early-life environment are "transmitted" into adulthood and caused NAFLD.
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Affiliation(s)
- Qi Fu
- Department of Research Administration, Children's Mercy Hospital, Kansas City, MO, USA
| | - Jenna M Frick
- Department of Anatomy and Cell Biology, School of Medicine, University of Kansas Medical Center, Kansas City, KS, USA
| | - Maura F O'Neil
- Department of Pathology and Laboratory Medicine, School of Medicine, University of Kansas Medical Center, Kansas City, KS, USA
| | - Olivia C Eller
- Department of Anatomy and Cell Biology, School of Medicine, University of Kansas Medical Center, Kansas City, KS, USA
| | - E Matthew Morris
- Department of Molecular and Integrative Physiology, School of Medicine, University of Kansas Medical Center, Kansas City, KS, USA
| | - John P Thyfault
- Department of Molecular and Integrative Physiology, School of Medicine, University of Kansas Medical Center, Kansas City, KS, USA
- Research Service, Kansas City VA Medical Center, Kansas City, KS, USA
| | - Julie A Christianson
- Department of Anatomy and Cell Biology, School of Medicine, University of Kansas Medical Center, Kansas City, KS, USA
| | - Robert H Lane
- Department of Administration, Children's Mercy Hospital, Kansas City, MO, USA.
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Kim KE, Shin HJ, Ju Y, Jung Y, An HS, Lee SJ, Jeong EA, Lee J, Hwang GS, Roh GS. Intermittent Fasting Attenuates Metabolic-Dysfunction-Associated Steatohepatitis by Enhancing the Hepatic Autophagy-Lysosome Pathway. Nutrients 2023; 15:4574. [PMID: 37960230 PMCID: PMC10649202 DOI: 10.3390/nu15214574] [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: 10/13/2023] [Revised: 10/25/2023] [Accepted: 10/26/2023] [Indexed: 11/15/2023] Open
Abstract
An intermittent fasting (IF) regimen has been shown to protect against metabolic dysfunction-associated steatohepatitis (MASH). However, the precise mechanism remains unclear. Here, we explored how IF reduced hepatic lipid accumulation, inflammation, and fibrosis in mice with MASH. The mice were fed a high-fat diet (HFD) for 30 weeks and either continued on the HFD or were subjected to IF for the final 22 weeks. IF reduced body weight, insulin resistance, and hepatic lipid accumulation in HFD-fed mice. Lipidome analysis revealed that IF modified HFD-induced hepatic lipid composition. In particular, HFD-induced impaired autophagic flux was reversed by IF. The decreased hepatic lysosome-associated membrane protein 1 level in HFD-fed mice was upregulated in HFD+IF-fed mice. However, increased hepatic lysosomal acid lipase protein levels in HFD-fed mice were reduced by IF. IF attenuated HFD-induced hepatic inflammation and galectin-3-positive Kupffer cells. In addition to the increases in hepatic hydroxyproline and lumican levels, lipocalin-2-mediated signaling was reversed in HFD-fed mice by IF. Taken together, our findings indicate that the enhancement of the autophagy-lysosomal pathway may be a critical mechanism of MASH reduction by IF.
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Affiliation(s)
- Kyung Eun Kim
- Department of Anatomy and Convergence Medical Science, College of Medicine, Institute of Medical Science, Gyeongsang National University, Jinju 52727, Republic of Korea; (K.E.K.); (H.J.S.); (H.S.A.); (S.J.L.); (E.A.J.); (J.L.)
| | - Hyun Joo Shin
- Department of Anatomy and Convergence Medical Science, College of Medicine, Institute of Medical Science, Gyeongsang National University, Jinju 52727, Republic of Korea; (K.E.K.); (H.J.S.); (H.S.A.); (S.J.L.); (E.A.J.); (J.L.)
| | - Yeajin Ju
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, Seoul 03759, Republic of Korea; (Y.J.); (Y.J.)
| | - Youngae Jung
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, Seoul 03759, Republic of Korea; (Y.J.); (Y.J.)
| | - Hyeong Seok An
- Department of Anatomy and Convergence Medical Science, College of Medicine, Institute of Medical Science, Gyeongsang National University, Jinju 52727, Republic of Korea; (K.E.K.); (H.J.S.); (H.S.A.); (S.J.L.); (E.A.J.); (J.L.)
| | - So Jeong Lee
- Department of Anatomy and Convergence Medical Science, College of Medicine, Institute of Medical Science, Gyeongsang National University, Jinju 52727, Republic of Korea; (K.E.K.); (H.J.S.); (H.S.A.); (S.J.L.); (E.A.J.); (J.L.)
| | - Eun Ae Jeong
- Department of Anatomy and Convergence Medical Science, College of Medicine, Institute of Medical Science, Gyeongsang National University, Jinju 52727, Republic of Korea; (K.E.K.); (H.J.S.); (H.S.A.); (S.J.L.); (E.A.J.); (J.L.)
| | - Jaewoong Lee
- Department of Anatomy and Convergence Medical Science, College of Medicine, Institute of Medical Science, Gyeongsang National University, Jinju 52727, Republic of Korea; (K.E.K.); (H.J.S.); (H.S.A.); (S.J.L.); (E.A.J.); (J.L.)
| | - Geum-Sook Hwang
- Integrated Metabolomics Research Group, Western Seoul Center, Korea Basic Science Institute, Seoul 03759, Republic of Korea; (Y.J.); (Y.J.)
- College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Gu Seob Roh
- Department of Anatomy and Convergence Medical Science, College of Medicine, Institute of Medical Science, Gyeongsang National University, Jinju 52727, Republic of Korea; (K.E.K.); (H.J.S.); (H.S.A.); (S.J.L.); (E.A.J.); (J.L.)
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Subramaiyam N. Insights of mitochondrial involvement in alcoholic fatty liver disease. J Cell Physiol 2023; 238:2175-2190. [PMID: 37642259 DOI: 10.1002/jcp.31100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Revised: 07/31/2023] [Accepted: 08/04/2023] [Indexed: 08/31/2023]
Abstract
Alcoholic liver disease (ALD) is a global concern affecting most of the population and leading to the development of end-stage liver disease. Metabolic alterations due to increased alcohol consumption surge the hepatic accumulation of lipids and develop into a severe form of alcoholic steatohepatitis (ASH), depending on age and the consumption rate. The mitochondria in the hepatocyte actively regulate metabolic homeostasis and are disrupted in ALD pathogenesis. The increased NADH upon ethanol metabolism inhibits the mitochondrial oxidation of fatty acids, alters oxidative phosphorylation, and favors de novo lipogenesis. The higher mitochondrial respiration in early ALD increases free radical generation, whereas mitochondrial respiration is uncoupled in chronic ALD, affecting the cellular energy status. The defective glutathione importer due to excessive cholesterol loading and low adenosine triphosphate accounts for additional oxidative stress leading to hepatocyte apoptosis. The defective mitochondrial transcription machinery and sirtuins function in ALD affect mitochondrial function and biogenesis. The metabolites of ethanol metabolism epigenetically alter the gene expression profile of hepatic cell populations by modulating the promoters and sirtuins, aiding hepatic fibrosis and inflammation. The defect in mitophagy increases the accumulation of megamitochondria in hepatocytes and attracts immune cells by releasing mitochondrial damage-associated molecular patterns to initiate hepatic inflammation and ASH progression. Thus, maintaining mitochondrial lipid homeostasis and antioxidant capacity pharmacologically could provide a better outcome for ALD management.
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Affiliation(s)
- Nithyananthan Subramaiyam
- Division of Gastroenterology, Hepatology and Nutrition, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
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Song R, Hu M, Qin X, Qiu L, Wang P, Zhang X, Liu R, Wang X. The Roles of Lipid Metabolism in the Pathogenesis of Chronic Diseases in the Elderly. Nutrients 2023; 15:3433. [PMID: 37571370 PMCID: PMC10420821 DOI: 10.3390/nu15153433] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 07/26/2023] [Accepted: 07/31/2023] [Indexed: 08/13/2023] Open
Abstract
Lipid metabolism plays crucial roles in cellular processes such as hormone synthesis, energy production, and fat storage. Older adults are at risk of the dysregulation of lipid metabolism, which is associated with progressive declines in the physiological function of various organs. With advancing age, digestion and absorption commonly change, thereby resulting in decreased nutrient uptake. However, in the elderly population, the accumulation of excess fat becomes more pronounced due to a decline in the body's capacity to utilize lipids effectively. This is characterized by enhanced adipocyte synthesis and reduced breakdown, along with diminished peripheral tissue utilization capacity. Excessive lipid accumulation in the body, which manifests as hyperlipidemia and accumulated visceral fat, is linked to several chronic lipid-related diseases, including cardiovascular disease, type 2 diabetes, obesity, and nonalcoholic fatty liver disease. This review provides a summary of the altered lipid metabolism during aging, including lipid digestion, absorption, anabolism, and catabolism, as well as their associations with age-related chronic diseases, which aids in developing nutritional interventions for older adults to prevent or alleviate age-related chronic diseases.
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Affiliation(s)
- Rui Song
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China; (R.S.); (M.H.); (X.Q.); (L.Q.)
| | - Mengxiao Hu
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China; (R.S.); (M.H.); (X.Q.); (L.Q.)
| | - Xiyu Qin
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China; (R.S.); (M.H.); (X.Q.); (L.Q.)
| | - Lili Qiu
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China; (R.S.); (M.H.); (X.Q.); (L.Q.)
| | - Pengjie Wang
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100193, China; (P.W.); (X.Z.); (R.L.)
| | - Xiaoxu Zhang
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100193, China; (P.W.); (X.Z.); (R.L.)
| | - Rong Liu
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100193, China; (P.W.); (X.Z.); (R.L.)
| | - Xiaoyu Wang
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing 100083, China; (R.S.); (M.H.); (X.Q.); (L.Q.)
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100193, China; (P.W.); (X.Z.); (R.L.)
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Zhou X, Zhang X, Niu D, Zhang S, Wang H, Zhang X, Nan F, Jiang S, Wang B. Gut microbiota induces hepatic steatosis by modulating the T cells balance in high fructose diet mice. Sci Rep 2023; 13:6701. [PMID: 37095192 PMCID: PMC10126116 DOI: 10.1038/s41598-023-33806-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 04/19/2023] [Indexed: 04/26/2023] Open
Abstract
Metabolic diseases are often associated with high fructose (HF) consumption. HF has also been found to alter the gut microbiota, which then favors the development of nonalcoholic fatty liver disease. However, the mechanisms underlying of the gut microbiota on this metabolic disturbance are yet to be determined. Thus, in this study, we further explored the effect the gut microbiota concerning the T cells balance in an HF diet mouse model. We fed mice 60% fructose-enriched diet for 12 weeks. At 4 weeks, HF diet did not affect the liver, but it caused injury to the intestine and adipose tissues. After 12 weeks, the lipid droplet aggregation was markedly increased in the liver of HF-fed mice. Further analysis of the gut microbial composition showed that HF decreased the Bacteroidetes/Firmicutes ratio and increased the levels of Blautia, Lachnoclostridium, and Oscillibacter. In addition, HF can increase the expression of pro-inflammatory cytokines (TNF-α, IL-6, and IL-1β) in the serum. T helper type 1 cells were significantly increased, and regulatory T(Treg) cells were markedly decreased in the mesenteric lymph nodes of the HF-fed mice. Furthermore, fecal microbiota transplantation alleviates systemic metabolic disorder by maintaining liver and intestinal immune homeostasis. Overall, our data indicated that intestinal structure injury and intestinal inflammation might be early, and liver inflammation and hepatic steatosis may be a subsequent effect following HF diets. Gut microbiota disorders impairing the intestinal barrier function and triggering immune homeostasis imbalance may be an importantly responsible for long-term HF diets induced hepatic steatosis.
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Affiliation(s)
- Xiaoqiong Zhou
- Department of Pathogenic Biology, College of Basic Medicine, Qingdao University, Qingdao, China
| | - Xianjuan Zhang
- Department of Pathogenic Biology, College of Basic Medicine, Qingdao University, Qingdao, China
| | - Delei Niu
- Department of Pathogenic Biology, College of Basic Medicine, Qingdao University, Qingdao, China
| | - Shuyun Zhang
- Department of Pathogenic Biology, College of Basic Medicine, Qingdao University, Qingdao, China
| | - Hui Wang
- Department of Special Medicine, College of Basic Medicine, Qingdao University, Qingdao, China
| | - Xueming Zhang
- Department of Pathogenic Biology, College of Basic Medicine, Qingdao University, Qingdao, China
| | - Fulong Nan
- Department of Special Medicine, College of Basic Medicine, Qingdao University, Qingdao, China
| | - Shasha Jiang
- Department of Pathogenic Biology, College of Basic Medicine, Qingdao University, Qingdao, China
| | - Bin Wang
- Department of Pathogenic Biology, College of Basic Medicine, Qingdao University, Qingdao, China.
- Department of Special Medicine, College of Basic Medicine, Qingdao University, Qingdao, China.
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10
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Abazari O, Shakibaee A, Shahriary A, Arabzadeh E, Hofmeister M. Hepatoprotective effects of moderate-intensity interval training along with ginger juice in an old male rat model. Pflugers Arch 2023; 475:437-452. [PMID: 36692542 DOI: 10.1007/s00424-023-02787-y] [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: 08/03/2022] [Revised: 01/03/2023] [Accepted: 01/04/2023] [Indexed: 01/25/2023]
Abstract
Aging is a natural process coupled with oxidative stress and chronic inflammation, gradually associated with losing organ function over time. Therefore, the objective of the current work was to peruse the protective effects of 8-week moderate-intensity interval training (MIIT) and ginger extract supplementation on some biomarkers of oxidative stress, inflammation, and lipid metabolism in the liver of elderly males Wistar rats (animal study with ethical code IR.BMSU.REC.1401.015). A total of thirty-two 22-month-aged male Wistar rats were randomly assigned to four groups: (1) control, (2) MIIT, (3) ginger, and (4) MIIT + ginger. After 8 weeks of treadmill training and ginger extract supplementation, the biochemical parameters (liver enzyme and lipid profile), inflammatory mediators (leucine-rich α-2 glycoprotein 1 (LRG1), tumor necrosis factor-alpha, and interleukin-6), pro-oxidant (malondialdehyde), antioxidant biomarkers (catalase, superoxide dismutase, total antioxidant capacity), some lipid metabolism regulators (carnitine palmitoyltransferase 1, adipose triglyceride lipase, acetyl-CoA carboxylase, CD36, and AMP-activated protein kinase), and liver histopathological changes were appraised. The acquired findings pointed out that MIIT combined with ginger extract appreciably diminished the serum levels of LRG1, liver enzymes, and lipid profile relative to the other groups after 8 weeks of intervention. Furthermore, ginger + MIIT caused a great improvement in the liver levels of antioxidant biomarkers, pro-oxidant, pro-inflammatory biomarkers, lipid metabolism regulators, and liver tissue impairment compared to the other groups. The findings suggested that MIIT + ginger was more effective in improving examined indices relative to the other groups.
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Affiliation(s)
- Omid Abazari
- Student Research Committee, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Abolfazl Shakibaee
- Exercise Physiology Research Center, Life Style Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran.
| | - Alireza Shahriary
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Ehsan Arabzadeh
- Exercise Physiology Research Center, Life Style Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Martin Hofmeister
- Department of Food and Nutrition, Consumer Centre of the German Federal State of Bavaria, Munich, Germany
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11
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Carracedo S, Lirussi L, Alsøe L, Segers F, Wang C, Bartosova Z, Bohov P, Tekin NB, Kong XY, Esbensen QY, Chen L, Wennerström A, Kroustallaki P, Ceolotto D, Tönjes A, Berge RK, Bruheim P, Wong G, Böttcher Y, Halvorsen B, Nilsen H. SMUG1 regulates fat homeostasis leading to a fatty liver phenotype in mice. DNA Repair (Amst) 2022; 120:103410. [DOI: 10.1016/j.dnarep.2022.103410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 08/08/2022] [Accepted: 10/01/2022] [Indexed: 11/25/2022]
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12
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Lu Z, Li Y, Li AJ, Syn WK, Wank SA, Lopes-Virella MF, Huang Y. Loss of GPR40 in LDL receptor-deficient mice exacerbates high-fat diet-induced hyperlipidemia and nonalcoholic steatohepatitis. PLoS One 2022; 17:e0277251. [PMID: 36331958 PMCID: PMC9635748 DOI: 10.1371/journal.pone.0277251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 10/21/2022] [Indexed: 11/06/2022] Open
Abstract
GPR40, a G protein-coupled receptor for free fatty acids (FFAs), is considered as a therapeutic target for type 2 diabetes mellitus (T2DM) since GPR40 activation in pancreatic beta cells enhances glucose-stimulated insulin secretion. Nonalcoholic fatty liver disease (NAFLD) is a common complication of T2DM or metabolic syndrome (MetS). However, the role of GPR40 in NAFLD associated with T2DM or MetS has not been well established. Given that it is known that cholesterol and FFAs are critically involved in the pathogenesis of nonalcoholic steatohepatitis (NASH) and LDL receptor (LDLR)-deficient mice are a good animal model for human hyperlipidemia including high cholesterol and FFAs, we generated GPR40 and LDLR double knockout (KO) mice in this study to determine the effect of GPR40 KO on hyperlipidemia-promoted NASH. We showed that GPR40 KO increased plasma levels of cholesterol and FFAs in high-fat diet (HFD)-fed LDLR-deficient mice. We also showed that GPR40 KO exacerbated HFD-induced hepatic steatosis, inflammation and fibrosis. Further study demonstrated that GPR40 KO led to upregulation of hepatic CD36 and genes involved in lipogenesis, fatty acid oxidation, fibrosis and inflammation. Finally, our in vitro mechanistic studies showed that while CD36 was involved in upregulation of proinflammatory molecules in macrophages by palmitic acid (PA) and lipopolysaccharide (LPS), GPR40 activation in macrophages exerts anti-inflammatory effects. Taken together, this study demonstrated for the first time that loss of GPR40 in LDLR-deficient mice exacerbated HFD-induced hyperlipidemia, hepatic steatosis, inflammation and fibrosis potentially through a CD36-dependent mechanism, suggesting that GPR40 may play a beneficial role in hyperlipidemia-associated NASH in LDLR-deficient mice.
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Affiliation(s)
- Zhongyang Lu
- Division of Endocrinology, Diabetes and Metabolic Diseases, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Yanchun Li
- Division of Endocrinology, Diabetes and Metabolic Diseases, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina, United States of America
| | - Ai-Jun Li
- Programs in Neuroscience, Washington State University, Pullman, Washington, United States of America
| | - Wing-Kin Syn
- Division of Gastroenterology and Hepatology, Medical University of South Carolina, Charleston, South Carolina, United States of America
- Ralph H. Johnson Veterans Affairs Medical Center, Charleston, South Carolina, United States of America
- Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country, Euskal Herriko Unibertsitatea/Universidad del País Vasco, Leioa, Spain
| | - Stephen A. Wank
- National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland, United States of America
| | - Maria F. Lopes-Virella
- Division of Endocrinology, Diabetes and Metabolic Diseases, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina, United States of America
- Ralph H. Johnson Veterans Affairs Medical Center, Charleston, South Carolina, United States of America
| | - Yan Huang
- Division of Endocrinology, Diabetes and Metabolic Diseases, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina, United States of America
- Ralph H. Johnson Veterans Affairs Medical Center, Charleston, South Carolina, United States of America
- * E-mail:
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13
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Sun Y, Hou X, Li L, Tang Y, Zheng M, Zeng W, Lei X. Improving obesity and lipid metabolism using conjugated linoleic acid. Vet Med Sci 2022; 8:2538-2544. [PMID: 36104831 PMCID: PMC9677407 DOI: 10.1002/vms3.921] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024] Open
Abstract
BACKGROUND Conjugated linoleic acid (CLA) can prevent fatty acid accumulation induced by a high-fructose diet and improve lipid metabolism disorders in patients. OBJECTIVES We aimed to investigate the effect of CLA on obesity and lipid metabolism and its possible mechanism. METHODS Eight-month-old male BKS.Cg-Dock7m +/+ Leprdb /JNju (db/db) mice (n = 12) were fed a CLA mix composed of equivalent c9, t11-CLA and t10, c12-CLA for 1 month. The effect of CLA on body weight, water and food intake, and triglyceride (TG) and total cholesterol (TC) levels was investigated. PPARα, PPARγ and CD36 expression was determined by quantitative PCR and western blotting. Additionally, the expression of these three genes was studied in HepG2 cells treated with CLA and linoleic acid. RESULTS CLA treatment notably reduced the dietary and water intake of db/db mice, effectively reduced body weight, and decreased serum TG and TC levels (p < 0.05). Increased expression of PPARα (p < 0.05) and decreased expression of CD36 (p < 0.001) were observed in the liver of mice that were fed CLA. CLA increased PPARα expression (p < 0.001) and decreased PPARγ (p < 0.001) and CD36 expression (p < 0.01) in HepG2 cells. CONCLUSIONS Our results showed that CLA can improve lipid metabolism in obese mice through upregulation of PPARα expression and downregulation of CD36 expression.
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Affiliation(s)
- Ye Sun
- Department of General PracticeZhujiang HospitalSouthern Medical UniversityGuangzhouChina
| | - Xufeng Hou
- Department of Cell BiologySchool of Basic MedicineSouthern Medical UniversityGuangzhouChina
| | - Lingjie Li
- Department of Cell BiologySchool of Basic MedicineSouthern Medical UniversityGuangzhouChina
| | - Yanqing Tang
- Department of Cell BiologySchool of Basic MedicineSouthern Medical UniversityGuangzhouChina
| | - Mingyue Zheng
- Department of Cell BiologySchool of Basic MedicineSouthern Medical UniversityGuangzhouChina
| | - Weisen Zeng
- Department of Cell BiologySchool of Basic MedicineSouthern Medical UniversityGuangzhouChina
| | - XiaoLong Lei
- Department of NutritionNanfang HospitalSouthern Medical UniversityGuangzhouChina
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14
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Momtazi-Borojeni AA, Banach M, Ruscica M, Sahebkar A. The role of PCSK9 in NAFLD/NASH and therapeutic implications of PCSK9 inhibition. Expert Rev Clin Pharmacol 2022; 15:1199-1208. [PMID: 36193738 DOI: 10.1080/17512433.2022.2132229] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
INTRODUCTION There are inconsistent findings regarding the effect of lipid-lowering agents on nonalcoholic fatty liver disease (NAFLD). Proprotein Convertase Subtilisin/Kexin type 9 (PCSK9) is an important player in cholesterol homeostasis and intracellular lipogenesis, and PCSK9 inhibitors (PCSK9-i) have been found to be efficient for pharmacological management of hyperlipidemia. AREAS COVERED Whether PCSK9 (itself) or PCSK9-i affects NAFLD is still disputed. To address this question, we review published preclinical and clinical studies providing evidence for the role of PCSK9 in and the effect of PCSK9-I on the development and pathogenesis of NAFLD. EXPERT OPINION The current evidence from a landscape of preclinical and clinical studies examining the role of PCSK9 in NAFLD shows controversial results. Preclinical studies indicate that PCSK9 associates with NAFLD and nonalcoholic steatohepatitis (NASH) progression in opposite directions. In humans, it has been concluded that the severity of hepatic steatosis affects the correlation between circulating PCSK9 and liver fat content in humans, with a possible impact of circulating PCSK9 in the early stages of NAFLD, but not in the late stages. However, data from clinical trials with PCSK9-i reassure to the safety of these agents, although real-life long-term evidence is needed.
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Affiliation(s)
| | - Maciej Banach
- Department of Hypertension, Medical University of Lodz (MUL), Lodz, Poland.,Cardiovascular Research Centre, University of Zielona Gora, Zielona Gora, Poland
| | - Massimiliano Ruscica
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | - Amirhossein Sahebkar
- Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,School of Medicine, The University of Western Australia, Perth, Australia.,Department of Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
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15
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Havas A, Yin S, Adams PD. The role of aging in cancer. Mol Oncol 2022; 16:3213-3219. [PMID: 36128609 PMCID: PMC9490134 DOI: 10.1002/1878-0261.13302] [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] [Indexed: 11/15/2022] Open
Abstract
Many cancers show an increase in incidence with age, and age is the biggest single risk factor for many cancers. However, the molecular basis of this relationship is poorly understood. Through a collection of review articles, our thematic issue discusses the link between aging and cancer in aspects including somatic mutations, proteostasis, mitochondria, metabolism, senescence, epigenetic regulation, immune regulation, DNA damage, and telomere function.
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Affiliation(s)
- Aaron Havas
- Sanford Burnham Prebys Medical Discovery InstituteLa JollaCAUSA
| | - Shanshan Yin
- Sanford Burnham Prebys Medical Discovery InstituteLa JollaCAUSA
| | - P. D. Adams
- Sanford Burnham Prebys Medical Discovery InstituteLa JollaCAUSA
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16
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Fanalli SL, da Silva BPM, Gomes JD, Ciconello FN, de Almeida VV, Freitas FAO, Moreira GCM, Silva-Vignato B, Afonso J, Reecy J, Koltes J, Koltes D, Regitano LCA, de Carvalho Baileiro JC, Freitas L, Coutinho LL, Fukumasu H, de Alencar SM, Luchiari Filho A, Cesar ASM. Effect of dietary soybean oil inclusion on liver-related transcription factors in a pig model for metabolic diseases. Sci Rep 2022; 12:10318. [PMID: 35725871 PMCID: PMC9209463 DOI: 10.1038/s41598-022-14069-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 05/31/2022] [Indexed: 12/21/2022] Open
Abstract
Dietary fatty acids (FA) are components of the lipids, which contribute to membrane structure, energy input, and biological functions related to cellular signaling and transcriptome regulation. However, the consumers still associate dietary FA with fat deposition and increased occurrence of metabolic diseases such as obesity and atherosclerosis. Previous studies already demonstrated that some fatty acids are linked with inflammatory response, preventing metabolic diseases. To better understand the role of dietary FA on metabolic diseases, for the first time, a study to identify key transcription factors (TF) involved in lipid metabolism and inflammatory response by transcriptome analysis from liver samples of animal models was performed. The key TF were identified by functional enrichment analysis from the list of differentially expressed genes identified in liver samples between 35 pigs fed with 1.5% or 3.0% soybean oil. The functional enrichment analysis detected TF linked to lipid homeostasis and inflammatory response, such as RXRA, EGFR, and SREBP2 precursor. These findings demonstrated that key TF related to lipid metabolism could be modulated by dietary inclusion of soybean oil. It could contribute to nutrigenomics research field that aims to elucidate dietary interventions in animal and human health, as well as to drive food technology and science.
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Affiliation(s)
- Simara Larissa Fanalli
- Faculty of Animal Science and Food Engineering, University of São Paulo, Campus Fernando Costa, Avenue Duque de Caxias Norte 225, Pirassununga, São Paulo, 13635-900, Brazil
| | - Bruna Pereira Martins da Silva
- Faculty of Animal Science and Food Engineering, University of São Paulo, Campus Fernando Costa, Avenue Duque de Caxias Norte 225, Pirassununga, São Paulo, 13635-900, Brazil
| | - Julia Dezen Gomes
- Luiz de Queiroz College of Agriculture, University of São Paulo, Avenue Pádua Dias 11, Piracicaba, São Paulo, 13418-900, Brazil
| | - Fernanda Nery Ciconello
- Luiz de Queiroz College of Agriculture, University of São Paulo, Avenue Pádua Dias 11, Piracicaba, São Paulo, 13418-900, Brazil
| | - Vivian Vezzoni de Almeida
- College of Veterinary Medicine and Animal Science, Federal University of Goiás, Nova Veneza, km 8, Campus Samambaia, Goiânia, Goiás, 74690-900, Brazil
| | - Felipe André Oliveira Freitas
- Luiz de Queiroz College of Agriculture, University of São Paulo, Avenue Pádua Dias 11, Piracicaba, São Paulo, 13418-900, Brazil
| | - Gabriel Costa Monteiro Moreira
- University of Liège, GIGA Medical Genomics, Unit of Animal Genomics, Quartier Hôpital, Avenue de l'Hôpital, 11, 4000, Liège, Belgium
| | - Bárbara Silva-Vignato
- Luiz de Queiroz College of Agriculture, University of São Paulo, Avenue Pádua Dias 11, Piracicaba, São Paulo, 13418-900, Brazil
| | - Juliana Afonso
- Embrapa Pecuária Sudeste, Km 234 s/nº, São Carlos, São Paulo, 13560-970, Brazil
| | - James Reecy
- Department of Animal Science, College of Agriculture and Life Sciences, Iowa State University, 1221, Kildee Hall, Ames, IA, 50011-3150, USA
| | - James Koltes
- Department of Animal Science, College of Agriculture and Life Sciences, Iowa State University, 1221, Kildee Hall, Ames, IA, 50011-3150, USA
| | - Dawn Koltes
- Department of Animal Science, College of Agriculture and Life Sciences, Iowa State University, 1221, Kildee Hall, Ames, IA, 50011-3150, USA
| | | | - Júlio Cesar de Carvalho Baileiro
- College of Veterinary Medicine and Animal Science, University of São Paulo, Duque de Caxias Norte, 225, Pirassununga, São Paulo, 13.635-900, Brazil
| | - Luciana Freitas
- DB Genética de Suínos, Avenue Juscelino Kubitschek de Oliveira, 2094, Patos de Minas, MG, 38.706-000, Brazil
| | - Luiz Lehmann Coutinho
- Luiz de Queiroz College of Agriculture, University of São Paulo, Avenue Pádua Dias 11, Piracicaba, São Paulo, 13418-900, Brazil
| | - Heidge Fukumasu
- Faculty of Animal Science and Food Engineering, University of São Paulo, Campus Fernando Costa, Avenue Duque de Caxias Norte 225, Pirassununga, São Paulo, 13635-900, Brazil
| | - Severino Matias de Alencar
- Luiz de Queiroz College of Agriculture, University of São Paulo, Avenue Pádua Dias 11, Piracicaba, São Paulo, 13418-900, Brazil
| | - Albino Luchiari Filho
- Luiz de Queiroz College of Agriculture, University of São Paulo, Avenue Pádua Dias 11, Piracicaba, São Paulo, 13418-900, Brazil
| | - Aline Silva Mello Cesar
- Faculty of Animal Science and Food Engineering, University of São Paulo, Campus Fernando Costa, Avenue Duque de Caxias Norte 225, Pirassununga, São Paulo, 13635-900, Brazil. .,Luiz de Queiroz College of Agriculture, University of São Paulo, Avenue Pádua Dias 11, Piracicaba, São Paulo, 13418-900, Brazil.
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17
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Soundharrajan I, Karnan M, Jung JS, Lee KD, Lee JC, Ramesh T, Kim D, Choi KC. A Transcriptomic Response to Lactiplantibacillus plantarum-KCC48 against High-Fat Diet-Induced Fatty Liver Diseases in Mice. Int J Mol Sci 2022; 23:ijms23126750. [PMID: 35743193 PMCID: PMC9224190 DOI: 10.3390/ijms23126750] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 06/15/2022] [Accepted: 06/15/2022] [Indexed: 02/05/2023] Open
Abstract
The most prevalent chronic liver disorder in the world is fatty liver disease caused by a high-fat diet. We examined the effects of Lactiplantibacillus plantarum-KCC48 on high-fat diet-induced (HFD) fatty liver disease in mice. We used the transcriptome tool to perform a systematic evaluation of hepatic mRNA transcripts changes in high-fat diet (HFD)-fed animals and high-fat diet with L. plantarum (HFLPD)-fed animals. HFD causes fatty liver diseases in animals, as evidenced by an increase in TG content in liver tissues compared to control animals. Based on transcriptome data, 145 differentially expressed genes (DEGs) were identified in the liver of HFD-fed mice compared to control mice. Moreover, 61 genes were differentially expressed in the liver of mice fed the HFLPD compared to mice fed the HFD. Additionally, 43 common DEGs were identified between HFD and HFLPD. These genes were enriched in metabolic processes, retinol metabolism, the PPAR signaling pathway, fatty acid degradation, arachidonic metabolism, and steroid hormone synthesis. Taking these data into consideration, it can be concluded that L. plantarum-KCC48 treatment significantly regulates the expression of genes involved in hepatosteatosis caused by HFD, which may prevent fatty liver disease.
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Affiliation(s)
- Ilavenil Soundharrajan
- Grassland and Forage Division, Rural Development Administration, National Institute of Animal Science, Cheonan 31000, Korea; (I.S.); (M.K.); (J.-S.J.)
| | - Muthusamy Karnan
- Grassland and Forage Division, Rural Development Administration, National Institute of Animal Science, Cheonan 31000, Korea; (I.S.); (M.K.); (J.-S.J.)
| | - Jeong-Sung Jung
- Grassland and Forage Division, Rural Development Administration, National Institute of Animal Science, Cheonan 31000, Korea; (I.S.); (M.K.); (J.-S.J.)
| | - Kyung-Dong Lee
- Department of Companion Animals, Dongsin University, Naju 58245, Korea;
| | - Jeong-Chae Lee
- Department of Bioactive Material Sciences and Research Center of Bioactive Materials, Jeonbuk National University, Jeonju 54896, Korea;
| | - Thiyagarajan Ramesh
- Department of Basic Medical Sciences, College of Medicine, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia;
| | - Dahye Kim
- Animal Genomics and Bioinformatics Division, National Institute of Animal Science, Wanju 55365, Korea
- Correspondence: (D.K.); (K.-C.C.); Tel.: +82-41-580-6752 (D.K.); Fax: +82-41-580-6779 (K.-C.C.)
| | - Ki-Choon Choi
- Grassland and Forage Division, Rural Development Administration, National Institute of Animal Science, Cheonan 31000, Korea; (I.S.); (M.K.); (J.-S.J.)
- Correspondence: (D.K.); (K.-C.C.); Tel.: +82-41-580-6752 (D.K.); Fax: +82-41-580-6779 (K.-C.C.)
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18
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NAFLD: Mechanisms, Treatments, and Biomarkers. Biomolecules 2022; 12:biom12060824. [PMID: 35740949 PMCID: PMC9221336 DOI: 10.3390/biom12060824] [Citation(s) in RCA: 97] [Impact Index Per Article: 48.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 05/31/2022] [Accepted: 06/02/2022] [Indexed: 02/07/2023] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD), recently renamed metabolic-associated fatty liver disease (MAFLD), is one of the most common causes of liver diseases worldwide. NAFLD is growing in parallel with the obesity epidemic. No pharmacological treatment is available to treat NAFLD, specifically. The reason might be that NAFLD is a multi-factorial disease with an incomplete understanding of the mechanisms involved, an absence of accurate and inexpensive imaging tools, and lack of adequate non-invasive biomarkers. NAFLD consists of the accumulation of excess lipids in the liver, causing lipotoxicity that might progress to metabolic-associated steatohepatitis (NASH), liver fibrosis, and hepatocellular carcinoma. The mechanisms for the pathogenesis of NAFLD, current interventions in the management of the disease, and the role of sirtuins as potential targets for treatment are discussed here. In addition, the current diagnostic tools, and the role of non-coding RNAs as emerging diagnostic biomarkers are summarized. The availability of non-invasive biomarkers, and accurate and inexpensive non-invasive diagnosis tools are crucial in the detection of the early signs in the progression of NAFLD. This will expedite clinical trials and the validation of the emerging therapeutic treatments.
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19
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Patten DA, Wilkinson AL, O'Keeffe A, Shetty S. Scavenger Receptors: Novel Roles in the Pathogenesis of Liver Inflammation and Cancer. Semin Liver Dis 2022; 42:61-76. [PMID: 34553345 PMCID: PMC8893982 DOI: 10.1055/s-0041-1733876] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The scavenger receptor superfamily represents a highly diverse collection of evolutionarily-conserved receptors which are known to play key roles in host homeostasis, the most prominent of which is the clearance of unwanted endogenous macromolecules, such as oxidized low-density lipoproteins, from the systemic circulation. Members of this family have also been well characterized in their binding and internalization of a vast range of exogenous antigens and, consequently, are generally considered to be pattern recognition receptors, thus contributing to innate immunity. Several studies have implicated scavenger receptors in the pathophysiology of several inflammatory diseases, such as Alzheimer's and atherosclerosis. Hepatic resident cellular populations express a diverse complement of scavenger receptors in keeping with the liver's homeostatic functions, but there is gathering interest in the contribution of these receptors to hepatic inflammation and its complications. Here, we review the expression of scavenger receptors in the liver, their functionality in liver homeostasis, and their role in inflammatory liver disease and cancer.
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Affiliation(s)
- Daniel A. Patten
- National Institute for Health Research Birmingham Liver Biomedical Research Unit, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
- Centre for Liver and Gastrointestinal Research, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
| | - Alex L. Wilkinson
- National Institute for Health Research Birmingham Liver Biomedical Research Unit, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
- Centre for Liver and Gastrointestinal Research, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
| | - Ayla O'Keeffe
- National Institute for Health Research Birmingham Liver Biomedical Research Unit, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
- Centre for Liver and Gastrointestinal Research, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
| | - Shishir Shetty
- National Institute for Health Research Birmingham Liver Biomedical Research Unit, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
- Centre for Liver and Gastrointestinal Research, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
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20
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James BH, Papakyriacou P, Gardener MJ, Gliddon L, Weston CJ, Lalor PF. The Contribution of Liver Sinusoidal Endothelial Cells to Clearance of Therapeutic Antibody. Front Physiol 2022; 12:753833. [PMID: 35095549 PMCID: PMC8795706 DOI: 10.3389/fphys.2021.753833] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 10/25/2021] [Indexed: 12/12/2022] Open
Abstract
Many chronic inflammatory diseases are treated by administration of “biological” therapies in terms of fully human and humanized monoclonal antibodies or Fc fusion proteins. These tools have widespread efficacy and are favored because they generally exhibit high specificity for target with a low toxicity. However, the design of clinically applicable humanized antibodies is complicated by the need to circumvent normal antibody clearance mechanisms to maintain therapeutic dosing, whilst avoiding development of off target antibody dependent cellular toxicity. Classically, professional phagocytic immune cells are responsible for scavenging and clearance of antibody via interactions with the Fc portion. Immune cells such as macrophages, monocytes, and neutrophils express Fc receptor subsets, such as the FcγR that can then clear immune complexes. Another, the neonatal Fc receptor (FcRn) is key to clearance of IgG in vivo and serum half-life of antibody is explicitly linked to function of this receptor. The liver is a site of significant expression of FcRn and indeed several hepatic cell populations including Kupffer cells and liver sinusoidal endothelial cells (LSEC), play key roles in antibody clearance. This combined with the fact that the liver is a highly perfused organ with a relatively permissive microcirculation means that hepatic binding of antibody has a significant effect on pharmacokinetics of clearance. Liver disease can alter systemic distribution or pharmacokinetics of antibody-based therapies and impact on clinical effectiveness, however, few studies document the changes in key membrane receptors involved in antibody clearance across the spectrum of liver disease. Similarly, the individual contribution of LSEC scavenger receptors to antibody clearance in a healthy or chronically diseased organ is not well characterized. This is an important omission since pharmacokinetic studies of antibody distribution are often based on studies in healthy individuals and thus may not reflect the picture in an aging or chronically diseased population. Therefore, in this review we consider the expression and function of key antibody-binding receptors on LSEC, and the features of therapeutic antibodies which may accentuate clearance by the liver. We then discuss the implications of this for the design and utility of monoclonal antibody-based therapies.
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Affiliation(s)
- Bethany H. James
- Centre for Liver and Gastroenterology Research and National Institute for Health Research (NIHR) Birmingham Biomedical Research Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
| | - Pantelitsa Papakyriacou
- Centre for Liver and Gastroenterology Research and National Institute for Health Research (NIHR) Birmingham Biomedical Research Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
| | - Matthew J. Gardener
- Antibody Pharmacology, Biopharm Discovery, Glaxo Smith Kline Research and Development, Stevenage, United Kingdom
| | - Louise Gliddon
- Antibody Pharmacology, Biopharm Discovery, Glaxo Smith Kline Research and Development, Stevenage, United Kingdom
| | - Christopher J. Weston
- Centre for Liver and Gastroenterology Research and National Institute for Health Research (NIHR) Birmingham Biomedical Research Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
| | - Patricia F. Lalor
- Centre for Liver and Gastroenterology Research and National Institute for Health Research (NIHR) Birmingham Biomedical Research Centre, Institute of Immunology and Immunotherapy, University of Birmingham, Birmingham, United Kingdom
- *Correspondence: Patricia F. Lalor,
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21
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Xiang L, Jiao Y, Qian Y, Li Y, Mao F, Lu Y. Comparison of hepatic gene expression profiles between three mouse models of Nonalcoholic Fatty Liver Disease. Genes Dis 2022; 9:201-215. [PMID: 35005119 PMCID: PMC8720708 DOI: 10.1016/j.gendis.2021.02.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Revised: 02/06/2021] [Accepted: 02/17/2021] [Indexed: 12/30/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) has become the most common chronic liver disorder worldwide. Murine models of NAFLD have been widely used to explore its pathogenesis. In this study, we performed a systematic evaluation of hepatic genome-wide mRNA expression by RNA-Sequencing using three mouse models of NAFLD: leptin receptor deficient db/db mice, high-fat high-sugar diet (HSHF)-induced obese mice, and dexamethasone (DEX)-induced NAFLD mice. As a result, we found both distinct and common pathways in the regulation of lipid metabolism from transcriptomes of three mouse models. Moreover, only a total of 12 differentially expressed genes (DEGs) were commonly detected among all three mouse groups, indicating very little overlap among all three models. Therefore, our results suggest that NAFLD is a heterogeneous disease with highly variable molecular mechanisms.
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Affiliation(s)
- Liping Xiang
- Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China
| | - Yang Jiao
- Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China
| | - Yiling Qian
- Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China.,Department of Endocrinology and Metabolism, Minhang Branch, Zhongshan Hospital, Central Hospital of Minhang District, Shanghai Minhang Hospital, Fudan University, Shanghai 200032, PR China
| | - Yao Li
- Department of Laboratory Animal Science, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, PR China
| | - Fei Mao
- Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China
| | - Yan Lu
- Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai 200032, PR China
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22
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Tanataweethum N, Trang A, Lee C, Mehta J, Patel N, Cohen RN, Bhushan A. Investigation of insulin resistance through a multiorgan microfluidic organ-on-chip. Biomed Mater 2021; 17. [PMID: 34942604 DOI: 10.1088/1748-605x/ac4611] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 12/23/2021] [Indexed: 11/12/2022]
Abstract
The development of hepatic insulin resistance (IR) is a critical factor in developing type 2 diabetes (T2D), where insulin fails to inhibit hepatic glucose production but retains its capacity to promote hepatic lipogenesis. Improving insulin sensitivity can be effective in preventing and treating T2D. However, selective control of glucose and lipid synthesis has been difficult. It is known that excess white adipose tissue is detrimental to insulin sensitivity, whereas brown adipose tissue transplantation can restore it in diabetic mice. However, challenges remain in our understanding of liver-adipose communication because the confounding effects of hypothalamic regulation of metabolic function cannot be ruled out in previous studies. There is a lack of in vitro models that use primary cells to study cellular-crosstalk under insulin resistant conditions. Building upon our previous work on the microfluidic primary liver and adipose organ-on-chips, we report for the first time the development of integrated insulin resistant liver-adipose (white and brown) organ-on-chip. The design of the microfluidic device was carried out using computational fluid dynamics; the experimental studies were conducted by carrying out detailed biochemical analysis RNA-seq analysis on both cell types. Further, we tested the hypothesis that brown adipocytes regulated both hepatic insulin sensitivity and lipogenesis. Our results show effective co-modulation of hepatic glucose and lipid synthesis through a platform for identifying potential therapeutics for IR and diabetes.
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Affiliation(s)
- Nida Tanataweethum
- Biomedical Engineering, Illinois Institute of Technology, Dept of Biomedical Engineering, 3255 South dearborn street, Chicago, Chicago, Illinois, 60616-3717, UNITED STATES
| | - Allyson Trang
- Biomedical Engineering, Illinois Institute of Technology, Dept of Biomedical Engineering, 3255 South Dearborn Street Wishnick Hall, Suite 314, Chicago, Chicago, Illinois, 60616-3717, UNITED STATES
| | - Chaeeun Lee
- Biomedical Engineering, Illinois Institute of Technology, Dept of Biomedical Engineering, 3255 South Dearborn Street Wishnick Hall, Suite 314, Chicago, Chicago, Illinois, 60616-3717, UNITED STATES
| | - Jhalak Mehta
- Biomedical Engineering, Illinois Institute of Technology, Dept of Biomedical Engineering, 3255 South dearborn street, Chicago, Chicago, Illinois, 60616-3717, UNITED STATES
| | - Neha Patel
- Illinois Institute of Technology, Dept of Biomedical Engineering, 3255 South dearborn street, Chicago, Chicago, Illinois, 60616-3717, UNITED STATES
| | - Ronald N Cohen
- Department of Medicine, The University of Chicago, 5841 S. Maryland Avenue, MC 1027, Chicago, Chicago, Illinois, 60637-1476, UNITED STATES
| | - Abhinav Bhushan
- Biomedical Engineering, Illinois Institute of Technology, 3255 S Dearborn St, Wishnick 314, Chicago, Chicago, Illinois, 60616-3717, UNITED STATES
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23
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Cruz-Villanueva SR, Ramirez-Nava JC, Moreno-Luna JA, Cárdenas-Ureña KG, Espín-Iturbe LT, Sánchez Otero MG, Quintana-Castro R, Alexander-Aguilera A. Effect of Hyperbaric Oxygen Therapy (HBOT) on Insulin Resistance Associated with Abdominal Obesity in Wistar Rats with Dietary Sucrose-Induced Metabolic Syndrome. J Nutr Sci Vitaminol (Tokyo) 2021; 67:292-300. [PMID: 34719614 DOI: 10.3177/jnsv.67.292] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Metabolic syndrome (MS) is a combination of risk factors related to the development of mainly type 2 diabetes mellitus, cardiovascular disease (CVD) and nonalcoholic fatty liver disease (NAFLD). Its prevalence has increased worldwide, and healthcare systems will face major challenges in addressing this problem. The aim of this work was to evaluate the effect of hyperbaric oxygen therapy (HBOT) on insulin resistance (IR) and obesity associated with MS in Wistar rats. The experimental design consisted of three groups of sucrose-induced MS rats: the MS group that consumed sucrose (MS-Suc; n=5), the MS group that ingested sucrose and HBOT (MS-Suc-HBOT; n=5), the MS group that did not consume sucrose and that received HBOT (MS-HBOT; n=5) and the control group. The rats received HBOT for 20 d at 2.4 atmospheres absolute (ATA) for 60 min. Subsequently, the rats were euthanized, and body fat weight, serum biochemical parameters and microscopic analysis of adipose tissue were determined. Rats with hyperoxia had decreased body weight, adipose tissue hypertrophy, and abdominal and epididymal fat. Likewise, markers of insulin resistance (glucose, insulin and HOMA-IR), biochemical parameters of dyslipidemia (cholesterol and triglycerides) and nonalcoholic fatty liver (AST and ALT) decreased; in contrast, compared to the control group, HBOT increased the 1/HOMA-IR, HOMA-βCell and McAuley indexes, which were related to the improvement in insulin sensitivity (p<0.05; p<0.01). HBOT showed beneficial effects in the treatment of IR and obesity associated with sucrose-induced metabolic syndrome in Wistar rats.
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Affiliation(s)
| | | | | | | | | | | | - Rodolfo Quintana-Castro
- Escuela de Posgrados de Sanidad Naval, Hospital Naval de Especialidades de Veracruz.,Facultad de Bioanálisis, Universidad Veracruzana
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24
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Ontawong A, Pasachan T, Trisuwan K, Soodvilai S, Duangjai A, Pongchaidecha A, Amornlerdpison D, Srimaroeng C. Coffea arabica pulp aqueous extract attenuates oxidative stress and hepatic lipid accumulation in HepG2 cells. J Herb Med 2021. [DOI: 10.1016/j.hermed.2021.100465] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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25
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Bárcena B, Salamanca A, Pintado C, Mazuecos L, Villar M, Moltó E, Bonzón-Kulichenko E, Vázquez J, Andrés A, Gallardo N. Aging Induces Hepatic Oxidative Stress and Nuclear Proteomic Remodeling in Liver from Wistar Rats. Antioxidants (Basel) 2021; 10:antiox10101535. [PMID: 34679670 PMCID: PMC8533122 DOI: 10.3390/antiox10101535] [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: 07/31/2021] [Revised: 09/23/2021] [Accepted: 09/24/2021] [Indexed: 12/13/2022] Open
Abstract
Aging is a continuous, universal, and irreversible process that determines progressive loss of adaptability. The liver is a critical organ that supports digestion, metabolism, immunity, detoxification, vitamin storage, and hormone signaling. Nevertheless, the relationship between aging and the development of liver diseases remains elusive. In fact, although prolonged fasting in adult rodents and humans delays the onset of the disease and increases longevity, whether prolonged fasting could exert adverse effects in old organisms remains incompletely understood. In this work, we aimed to characterize the oxidative stress and nuclear proteome in the liver of 3-month- and 24-month-old male Wistar rats upon 36 h of fasting and its adaptation in response to 30 min of refeeding. To this end, we analyzed the hepatic lipid peroxidation levels (TBARS) and the expression levels of genes associated with fat metabolism and oxidative stress during aging. In addition, to gain a better insight into the molecular and cellular processes that characterize the liver of old rats, the hepatic nuclear proteome was also evaluated by isobaric tag quantitation (iTRAQ) mass spectrometry-based proteomics. In old rats, aging combined with prolonged fasting had great impact on lipid peroxidation in the liver that was associated with a marked downregulation of antioxidant genes (Sod2, Fmo3, and Cyp2C11) compared to young rats. Besides, our proteomic study revealed that RNA splicing is the hepatic nuclear biological process markedly affected by aging and this modification persists upon refeeding. Our results suggest that aged-induced changes in the nuclear proteome could affect processes associated with the adaptative response to refeeding after prolonged fasting, such as those involved in the defense against oxidative stress.
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Affiliation(s)
- Brenda Bárcena
- Biochemistry Section, Regional Center for Biomedical Research (CRIB), Faculty of Sciences and Chemical Technologies, University of Castilla-La Mancha, Avda. Camilo Jose Cela 10, 13071 Ciudad Real, Spain; (B.B.); (A.S.); (L.M.); (A.A.)
| | - Aurora Salamanca
- Biochemistry Section, Regional Center for Biomedical Research (CRIB), Faculty of Sciences and Chemical Technologies, University of Castilla-La Mancha, Avda. Camilo Jose Cela 10, 13071 Ciudad Real, Spain; (B.B.); (A.S.); (L.M.); (A.A.)
| | - Cristina Pintado
- Biochemistry Section, Regional Center for Biomedical Research (CRIB), Faculty of Environmental Sciences and Biochemistry, University of Castilla-La Mancha, Avda. Carlos III s/n, 45071 Toledo, Spain; (C.P.); (E.M.)
| | - Lorena Mazuecos
- Biochemistry Section, Regional Center for Biomedical Research (CRIB), Faculty of Sciences and Chemical Technologies, University of Castilla-La Mancha, Avda. Camilo Jose Cela 10, 13071 Ciudad Real, Spain; (B.B.); (A.S.); (L.M.); (A.A.)
| | - Margarita Villar
- Biochemistry Section, Regional Center for Biomedical Research (CRIB), Faculty of Sciences and Chemical Technologies, University of Castilla-La Mancha, Avda. Camilo Jose Cela 10, 13071 Ciudad Real, Spain; (B.B.); (A.S.); (L.M.); (A.A.)
- SaBio, Instituto de Investigación en Recursos Cinegéticos IREC-CSIC-UCLM-JCCM, Ronda de Toledo s/n, 13005 Ciudad Real, Spain
- Correspondence: (M.V.); (N.G.)
| | - Eduardo Moltó
- Biochemistry Section, Regional Center for Biomedical Research (CRIB), Faculty of Environmental Sciences and Biochemistry, University of Castilla-La Mancha, Avda. Carlos III s/n, 45071 Toledo, Spain; (C.P.); (E.M.)
| | - Elena Bonzón-Kulichenko
- Cardiovascular Proteomics Laboratory, Centro Nacional de Investigaciones Cardiovasculares Carlos III and CIBER de Enfermedades Cardiovasculares (CIBERCV), 28029 Madrid, Spain; (E.B.-K.); (J.V.)
| | - Jesús Vázquez
- Cardiovascular Proteomics Laboratory, Centro Nacional de Investigaciones Cardiovasculares Carlos III and CIBER de Enfermedades Cardiovasculares (CIBERCV), 28029 Madrid, Spain; (E.B.-K.); (J.V.)
| | - Antonio Andrés
- Biochemistry Section, Regional Center for Biomedical Research (CRIB), Faculty of Sciences and Chemical Technologies, University of Castilla-La Mancha, Avda. Camilo Jose Cela 10, 13071 Ciudad Real, Spain; (B.B.); (A.S.); (L.M.); (A.A.)
| | - Nilda Gallardo
- Biochemistry Section, Regional Center for Biomedical Research (CRIB), Faculty of Sciences and Chemical Technologies, University of Castilla-La Mancha, Avda. Camilo Jose Cela 10, 13071 Ciudad Real, Spain; (B.B.); (A.S.); (L.M.); (A.A.)
- Correspondence: (M.V.); (N.G.)
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26
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Le TNH, Choi HJ, Jun HS. Ethanol Extract of Liriope platyphylla Root Attenuates Non-Alcoholic Fatty Liver Disease in High-Fat Diet-Induced Obese Mice via Regulation of Lipogenesis and Lipid Uptake. Nutrients 2021; 13:3338. [PMID: 34684339 PMCID: PMC8538311 DOI: 10.3390/nu13103338] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/18/2021] [Accepted: 09/21/2021] [Indexed: 12/20/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is a common metabolic disorder that causes excess lipid accumulation in the liver and is the leading cause of end-stage liver disease. Liriope platyphylla is a medicinal herb that has long been used to treat cough, obesity, and diabetes. However, the effect of Liriope platyphylla on NAFLD has not been studied. The aim of this study was to investigate the effect of Liriope platyphylla root ethanolic extract (LPE) on hepatic lipid accumulation in high-fat diet (HFD)-induced obese mice. Six-week-old C57BL/6 male mice were fed a HFD for 8 weeks and then treated with LPE (100 or 250 mg/kg/day) by oral gavage for another 8 weeks. Body weight gain and liver weight were significantly lower in the 250 mg/kg LPE-treated HFD group than in the vehicle-treated HFD group. Histological analysis of liver sections demonstrated that LPE treatment reduced lipid accumulation compared to the vehicle treatment. The serum total cholesterol, AST, and ALT levels significantly decreased in the LPE-treated HFD group compared to those in the vehicle-treated HFD group. The LPE significantly decreases the protein expression levels of SREBP1, ACC, p-ACC, FAS, and SCD1, which are involved in lipogenesis, and PPARγ, CD36/FAT, and FATP5, which are involved in fatty acid uptake, both in vivo and in vitro. Thus, LPE may attenuate HFD-induced NAFLD by decreasing lipid accumulation by inhibiting lipogenesis and fatty acid uptake.
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Affiliation(s)
- Trang Nu Huyen Le
- Gachon Institute of Pharmaceutical Science, College of Pharmacy, Gachon University, 191 Hambakmoe-ro, Yeonsu-gu, Incheon 21936, Korea; (T.N.H.L.); (H.-J.C.)
| | - Ho-Jung Choi
- Gachon Institute of Pharmaceutical Science, College of Pharmacy, Gachon University, 191 Hambakmoe-ro, Yeonsu-gu, Incheon 21936, Korea; (T.N.H.L.); (H.-J.C.)
- Lee Gil Ya Cancer and Diabetes Institute, Gachon University, 155 Gaetbeol-ro, Yeonsu-gu, Incheon 21999, Korea
| | - Hee-Sook Jun
- Gachon Institute of Pharmaceutical Science, College of Pharmacy, Gachon University, 191 Hambakmoe-ro, Yeonsu-gu, Incheon 21936, Korea; (T.N.H.L.); (H.-J.C.)
- Lee Gil Ya Cancer and Diabetes Institute, Gachon University, 155 Gaetbeol-ro, Yeonsu-gu, Incheon 21999, Korea
- Gachon Medical Research Institute, Gil Hospital, 21 Namdong-daero 774beon-gil, Namdong-gu, Incheon 21565, Korea
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27
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Fu Q, North PE, Ke X, Huang YW, Fritz KA, Majnik AV, Lane RH. Adverse Maternal Environment and Postweaning Western Diet Alter Hepatic CD36 Expression and Methylation Concurrently with Nonalcoholic Fatty Liver Disease in Mouse Offspring. J Nutr 2021; 151:3102-3112. [PMID: 34486661 PMCID: PMC8485909 DOI: 10.1093/jn/nxab249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/21/2021] [Accepted: 07/01/2021] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND The role of an adverse maternal environment (AME) in conjunction with a postweaning Western diet (WD) in the development of nonalcoholic fatty liver disease (NAFLD) in adult offspring has not been explored. Likewise, the molecular mechanisms associated with AME-induced NAFLD have not been studied. The fatty acid translocase or cluster of differentiation 36 (CD36) has been implicated to play a causal role in the pathogenesis of WD-induced steatosis. However, it is unknown if CD36 plays a role in AME-induced NAFLD. OBJECTIVE This study was designed to evaluate the isolated and additive impact of AME and postweaning WD on the expression and DNA methylation of hepatic Cd36 in association with the development of NAFLD in a novel mouse model. METHODS AME constituted maternal WD and maternal stress, whereas the control (Con) group had neither. Female C57BL/6J mice were fed a WD [40% fat energy, 29.1% sucrose energy, and 0.15% cholesterol (wt/wt)] 5 wk prior to pregnancy and throughout lactation. Non invasive variable stressors (random frequent cage changing, limited bedding, novel object, etc.) were applied to WD dams during the last third of pregnancy to produce an AME. Con dams consumed the control diet (CD) (10% fat energy, no sucrose or cholesterol) and were not exposed to stress. Male offspring were weaned onto either CD or WD, creating 4 experimental groups: Con-CD, Con-WD, AME-CD, and AME-WD, and evaluated for metabolic and molecular parameters at 120 d of age. RESULTS AME and postweaning WD independently and additively increased the development of hepatic steatosis in adult male offspring. AME and WD independently and additively upregulated hepatic CD36 protein and mRNA expression and hypomethylated promoters 2 and 3 of the Cd36 gene. CONCLUSIONS Using a mouse AME model together with postweaning WD, this study demonstrates a role for CD36 in AME-induced NAFLD in offspring and reveals 2 regions of environmentally induced epigenetic heterogeneity within Cd36.
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Affiliation(s)
- Qi Fu
- Department of Research Administration, Children's Mercy Hospital, Kansas City, MO, USA
| | - Paula E North
- Department of Pediatric Pathology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Xingrao Ke
- Department of Research Administration, Children's Mercy Hospital, Kansas City, MO, USA
| | - Yi-Wen Huang
- Department of Obstetrics & Gynecology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Katie A Fritz
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, USA
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Smolka C, Schlösser D, Hohnloser C, Bemtgen X, Jänich C, Schneider L, Martin J, Pfeifer D, Moser M, Hasselblatt P, Bode C, Grundmann S, Pankratz F. MiR-100 overexpression attenuates high fat diet induced weight gain, liver steatosis, hypertriglyceridemia and development of metabolic syndrome in mice. Mol Med 2021; 27:101. [PMID: 34488621 PMCID: PMC8422764 DOI: 10.1186/s10020-021-00364-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 08/25/2021] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Diet-induced obesity can result in the development of a diverse spectrum of cardiovascular and metabolic diseases, including type 2 diabetes, dyslipidemia, non-alcoholic liver steatosis and atherosclerotic disease. MicroRNAs have been described to be important regulators of metabolism and disease development. METHODS In the current study, we investigated the effects of ubiquitous miR-100 overexpression on weight gain and the metabolic phenotype in a newly generated transgenic mouse strain under normal chow and high fat diet and used microarray expression analysis to identify new potential target genes of miR-100. RESULTS While transgenic overexpression of miR-100 did not significantly affect weight and metabolism under a normal diet, miR-100 overexpressing mice showed a reduced weight gain under a high fat diet compared to wildtype mice, despite an equal calorie intake. This was accompanied by less visceral and subcutaneous fat development and lover serum LDL cholesterol. In addition, transgenic miR-100 mice were more glucose tolerant and insulin sensitive and demonstrated increased energy expenditure under high fat diet feeding. A comprehensive gene expression profiling revealed the differential expression of several genes involved in lipid storage- and metabolism, among them CD36 and Cyp4A14. Our data showed a direct regulation of CD36 by miR-100, leading to a reduced fatty acid uptake in primary hepatocytes overexpressing miR-100 and the downregulation of several downstream mediators of lipid metabolism such as ACC1, FABP4, FAS and PPARγ in the liver. CONCLUSIONS Our findings demonstrate a protective role of miR-100 in high fat diet induced metabolic syndrome and liver steatosis, partially mediated by the direct repression of CD36 and attenuation of hepatic lipid storage, implicating miR-100 as a possible therapeutic target in liver steatosis.
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Affiliation(s)
- Christian Smolka
- Department of Cardiology and Angiology I, University Heart Center Freiburg - Bad Krozingen, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Delia Schlösser
- Department of Cardiology and Angiology I, University Heart Center Freiburg - Bad Krozingen, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Catherine Hohnloser
- Department of Cardiology and Angiology I, University Heart Center Freiburg - Bad Krozingen, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Xavier Bemtgen
- Department of Cardiology and Angiology I, University Heart Center Freiburg - Bad Krozingen, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Caterina Jänich
- Department of Cardiology and Angiology I, University Heart Center Freiburg - Bad Krozingen, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Laura Schneider
- Department of Cardiology and Angiology I, University Heart Center Freiburg - Bad Krozingen, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Julien Martin
- Department of Cardiology and Angiology I, University Heart Center Freiburg - Bad Krozingen, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Dietmar Pfeifer
- Department of Hematology, Oncology and Stem Cell Transplantation, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Martin Moser
- Department of Cardiology and Angiology I, University Heart Center Freiburg - Bad Krozingen, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Peter Hasselblatt
- Department of Medicine II, Gastroenterology, Hepatology, Endocrinology, and Infectious Diseases, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Christoph Bode
- Department of Cardiology and Angiology I, University Heart Center Freiburg - Bad Krozingen, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Sebastian Grundmann
- Department of Cardiology and Angiology I, University Heart Center Freiburg - Bad Krozingen, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Franziska Pankratz
- Department of Cardiology and Angiology I, University Heart Center Freiburg - Bad Krozingen, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
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29
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Karunakaran U, Elumalai S, Moon JS, Won KC. CD36 Signal Transduction in Metabolic Diseases: Novel Insights and Therapeutic Targeting. Cells 2021; 10:cells10071833. [PMID: 34360006 PMCID: PMC8305429 DOI: 10.3390/cells10071833] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/14/2021] [Accepted: 07/17/2021] [Indexed: 12/24/2022] Open
Abstract
The cluster of differentiation 36 (CD36) is a scavenger receptor present on various types of cells and has multiple biological functions that may be important in inflammation and in the pathogenesis of metabolic diseases, including diabetes. Here, we consider recent insights into how the CD36 response becomes deregulated under metabolic conditions, as well as the therapeutic benefits of CD36 inhibition, which may provide clues for developing strategies aimed at the treatment or prevention of diabetes associated with metabolic diseases. To facilitate this process further, it is important to pinpoint regulatory mechanisms that are relevant under physiological and pathological conditions. In particular, understanding the mechanisms involved in dictating specific CD36 downstream cellular outcomes will aid in the discovery of potent compounds that target specific CD36 downstream signaling cascades.
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Affiliation(s)
- Udayakumar Karunakaran
- Innovative Center for Aging Research, Yeungnam University Medical Center, Daegu 42415, Korea; (U.K.); (S.E.)
| | - Suma Elumalai
- Innovative Center for Aging Research, Yeungnam University Medical Center, Daegu 42415, Korea; (U.K.); (S.E.)
| | - Jun-Sung Moon
- Innovative Center for Aging Research, Yeungnam University Medical Center, Daegu 42415, Korea; (U.K.); (S.E.)
- Yeungnam University College of Medicine, Daegu 42415, Korea
- Correspondence: (J.-S.M.); (K.-C.W.); Tel.: +82-53-620-3825 (J.-S.M.); +82-53-620-3846 (K.-C.W.)
| | - Kyu-Chang Won
- Innovative Center for Aging Research, Yeungnam University Medical Center, Daegu 42415, Korea; (U.K.); (S.E.)
- Yeungnam University College of Medicine, Daegu 42415, Korea
- Correspondence: (J.-S.M.); (K.-C.W.); Tel.: +82-53-620-3825 (J.-S.M.); +82-53-620-3846 (K.-C.W.)
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Chung KW. Advances in Understanding of the Role of Lipid Metabolism in Aging. Cells 2021; 10:cells10040880. [PMID: 33924316 PMCID: PMC8068994 DOI: 10.3390/cells10040880] [Citation(s) in RCA: 66] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/09/2021] [Accepted: 04/12/2021] [Indexed: 02/06/2023] Open
Abstract
During aging, body adiposity increases with changes in the metabolism of lipids and their metabolite levels. Considering lipid metabolism, excess adiposity with increased lipotoxicity leads to various age-related diseases, including cardiovascular disease, cancer, arthritis, type 2 diabetes, and Alzheimer's disease. However, the multifaceted nature and complexities of lipid metabolism make it difficult to delineate its exact mechanism and role during aging. With advances in genetic engineering techniques, recent studies have demonstrated that changes in lipid metabolism are associated with aging and age-related diseases. Lipid accumulation and impaired fatty acid utilization in organs are associated with pathophysiological phenotypes of aging. Changes in adipokine levels contribute to aging by modulating changes in systemic metabolism and inflammation. Advances in lipidomic techniques have identified changes in lipid profiles that are associated with aging. Although it remains unclear how lipid metabolism is regulated during aging, or how lipid metabolites impact aging, evidence suggests a dynamic role for lipid metabolism and its metabolites as active participants of signaling pathways and regulators of gene expression. This review describes recent advances in our understanding of lipid metabolism in aging, including established findings and recent approaches.
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Affiliation(s)
- Ki Wung Chung
- College of Pharmacy, Pusan National University, Busan 46214, Korea
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Iron depletion attenuates steatosis in a mouse model of non-alcoholic fatty liver disease: Role of iron-dependent pathways. Biochim Biophys Acta Mol Basis Dis 2021; 1867:166142. [PMID: 33839281 DOI: 10.1016/j.bbadis.2021.166142] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 03/23/2021] [Accepted: 04/01/2021] [Indexed: 02/06/2023]
Abstract
BACKGROUND & AIMS Iron has been proposed as influencing the progression of liver disease in subjects with non-alcoholic fatty liver disease (NAFLD). We have previously shown that, in the Hfe-/- mouse model of hemochromatosis, feeding of a high-calorie diet (HCD) leads to increased liver injury. In this study we investigated whether the feeding of an iron deficient/HCD to Hfe-/- mice influenced the development of NAFLD. METHODS Liver histology was assessed in Hfe-/- mice fed a standard iron-containing or iron-deficient diet plus or minus a HCD. Hepatic iron concentration, serum transferrin saturation and free fatty acid were measured. Expression of genes implicated in iron regulation and fatty liver disease was determined by quantitative real-time PCR (qRT-PCR). RESULTS Standard iron/HCD-fed mice developed severe steatosis whereas NAS score was reduced in mice fed iron-deficient HCD. Mice fed iron-deficient HCD had lower liver weights, lower transferrin saturation and decreased ferroportin and hepcidin gene expression than HCD-fed mice. Serum non-esterified fatty acids were increased in iron-deficient HCD-fed mice compared with standard iron HCD. Expression analysis indicated that genes involved in fatty-acid binding and mTOR pathways were regulated by iron depletion. CONCLUSIONS Our results indicate that decreasing iron intake attenuates the development of steatosis resulting from a high calorie diet. These results also suggest that human studies of agents that modify iron balance in patients with NAFLD should be revisited.
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Lack of change in serum sCD36 concentration in children with non-alcoholic fatty liver disease - A preliminary study. Adv Med Sci 2021; 66:35-40. [PMID: 33276220 DOI: 10.1016/j.advms.2020.11.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 11/19/2020] [Accepted: 11/20/2020] [Indexed: 02/06/2023]
Abstract
PURPOSE Non-alcoholic fatty liver disease (NAFLD) is increasingly being recognized in the pediatric population, therefore, the search for non-invasive parameters to predict progression of NAFLD is of great interest. The aim of this study was to assess serum concentration of sCD36 in children with obesity and to determine its diagnostic value in pediatric NAFLD. PATIENTS AND METHODS The study group consisted of 50 children with obesity aged 8-17.5 years, admitted to our Department because of suspected liver pathology. Selected liver diseases were excluded in the examined group. Anthropometry, laboratory tests (including the concentration of sCD36) and liver ultrasound, were performed in all subjects. RESULTS NAFLD was confirmed in 16 out of 50 patients with obesity. There was significantly higher activity of ALT, AST, GGT, and increased waist-hip ratio WHR in individuals with NAFLD in comparison to non-hepatopathic children with obesity. We did not find a significant difference between sCD36 concentration in patients with obesity and NAFLD and non-hepathopathic patients with obesity. We also did not find a significant difference between sCD36 concentration in children with obesity in comparison to the control group and between mild (grade 1) vs. advanced (grade ≥2) steatosis. Correlation of sCD36 concentration with anthropometric, biochemical, and bioimpedance parameters in children with obesity was confirmed only with body fat percentage. CONCLUSIONS sCD36 is not a suitable parameter to differentiate children with NAFLD from non-hepatopathic children with obesity and controls without obesity. Further studies on a larger pediatric population are needed to confirm these findings.
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Lambrecht J, Tacke F. Controversies and Opportunities in the Use of Inflammatory Markers for Diagnosis or Risk Prediction in Fatty Liver Disease. Front Immunol 2021; 11:634409. [PMID: 33633748 PMCID: PMC7900147 DOI: 10.3389/fimmu.2020.634409] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 12/29/2020] [Indexed: 12/12/2022] Open
Abstract
In the Western society, non-alcoholic fatty liver disease (NAFLD), characterized by the excessive accumulation of fat in the liver, represents the most common cause of chronic liver disease. If left untreated, approximately 15%-20% of patients with NAFLD will progress to non-alcoholic steatohepatitis (NASH), in which lobular inflammation, hepatocyte ballooning and fibrogenesis further contribute to a distorted liver architecture and function. NASH initiation has significant effects on liver-related mortality, as even the presence of early stage fibrosis increases the chances of adverse patient outcome. Therefore, adequate diagnostic tools for NASH are needed, to ensure that relevant therapeutic actions can be taken as soon as necessary. To date, the diagnostic gold standard remains the invasive liver biopsy, which is associated with several drawbacks such as high financial costs, procedural risks, and inter/intra-observer variability in histology analysis. As liver inflammation is a major hallmark of disease progression, inflammation-related circulating markers may represent an interesting source of non-invasive biomarkers for NAFLD/NASH. Examples for such markers include cytokines, chemokines or shed receptors from immune cells, circulating exosomes related to inflammation, and changing proportions of peripheral blood mononuclear cell (PBMC) subtypes. This review aims at documenting and critically discussing the utility of such novel inflammatory markers for NAFLD/NASH-diagnosis, patient stratification and risk prediction.
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Affiliation(s)
| | - Frank Tacke
- Department of Hepatology and Gastroenterology, Charité University Medicine Berlin, Berlin, Germany
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Lu Z, Li Y, Syn WK, Li AJ, Ritter WS, Wank SA, Lopes-Virella MF, Huang Y. GPR40 deficiency is associated with hepatic FAT/CD36 upregulation, steatosis, inflammation, and cell injury in C57BL/6 mice. Am J Physiol Endocrinol Metab 2021; 320:E30-E42. [PMID: 33103454 PMCID: PMC8436599 DOI: 10.1152/ajpendo.00257.2020] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 09/21/2020] [Accepted: 10/15/2020] [Indexed: 02/07/2023]
Abstract
G-protein-coupled receptor 40 (GPR40) is highly expressed in pancreatic islets, and its activation increases glucose-stimulated insulin secretion from pancreas. Therefore, GPR40 is considered as a target for type 2 diabetes mellitus (T2DM). Since nonalcoholic fatty liver disease (NAFLD) is associated with T2DM and GPR40 is also expressed by hepatocytes and macrophages, it is important to understand the role of GPR40 in NAFLD. However, the role of GPR40 in NAFLD in animal models has not been well defined. In this study, we fed wild-type or GPR40 knockout C57BL/6 mice a high-fat diet (HFD) for 20 wk and then assessed the effect of GPR40 deficiency on HFD-induced NAFLD. Assays on metabolic parameters showed that an HFD increased body weight, glucose, insulin, insulin resistance, cholesterol, and alanine aminotransferase (ALT), and GPR40 deficiency did not mitigate the HFD-induced metabolic abnormalities. In contrast, we found that GPR40 deficiency was associated with increased body weight, insulin, insulin resistance, cholesterol, and ALT in control mice fed a low-fat diet (LFD). Surprisingly, histology and Oil Red O staining showed that GPR40 deficiency in LFD-fed mice was associated with steatosis. Immunohistochemical analysis showed that GPR40 deficiency also increased F4/80, a macrophage biomarker, in LFD-fed mice. Furthermore, results showed that GPR40 deficiency led to a robust upregulation of hepatic fatty acid translocase (FAT)/CD36 expression. Finally, our in vitro studies showed that GPR40 knockdown by siRNA or a GPR40 antagonist increased palmitic acid-induced FAT/CD36 mRNA in hepatocytes. Taken together, this study indicates that GPR40 plays an important role in homeostasis of hepatic metabolism and inflammation and inhibits nonalcoholic steatohepatitis by possible modulation of FAT/CD36 expression.
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Affiliation(s)
- Zhongyang Lu
- Ralph H. Johnson Veterans Affairs Medical Center, Charleston, South Carolina
| | - Yanchun Li
- Division of Endocrinology, Diabetes, and Medical Genetics, Medical University of South Carolina, Charleston, South Carolina
| | - Wing-Kin Syn
- Ralph H. Johnson Veterans Affairs Medical Center, Charleston, South Carolina
- Division of Gastroenterology and Hepatology, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina
- Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country, Euskal Herriko Unibertsitatea/Universidad del País Vasco, Leioa, Spain
| | - Ai-Jun Li
- Integrative Physiology and Neuroscience, Washington State University, Pullman, Washington
| | - W Sue Ritter
- Integrative Physiology and Neuroscience, Washington State University, Pullman, Washington
| | - Stephen A Wank
- National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, Maryland
| | - Maria F Lopes-Virella
- Ralph H. Johnson Veterans Affairs Medical Center, Charleston, South Carolina
- Division of Endocrinology, Diabetes, and Medical Genetics, Medical University of South Carolina, Charleston, South Carolina
| | - Yan Huang
- Ralph H. Johnson Veterans Affairs Medical Center, Charleston, South Carolina
- Division of Endocrinology, Diabetes, and Medical Genetics, Medical University of South Carolina, Charleston, South Carolina
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Edler MK, Johnson CT, Ahmed HS, Richardson JR. Age, sex, and regional differences in scavenger receptor CD36 in the mouse brain: Potential relevance to cerebral amyloid angiopathy and Alzheimer's disease. J Comp Neurol 2020; 529:2209-2226. [PMID: 33319367 DOI: 10.1002/cne.25089] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 12/08/2020] [Accepted: 12/09/2020] [Indexed: 12/29/2022]
Abstract
Scavenger receptor CD36 contributes significantly to lipid homeostasis, inflammation, and amyloid deposition, while CD36 deficiency is associated with restored cerebrovascular function in an Alzheimer's disease (AD) mouse model. Yet the distribution of CD36 has not been examined in the brain. Here, we characterized CD36 gene and protein expression in the brains of young, middle aged, aged, and elderly male and female C57BL/6J mice. Age-related increases in CD36 mRNA expression were observed in the male hippocampus and female midbrain. Additionally, male mice had greater CD36 mRNA expression than females in the striatum, hippocampus, and midbrain. CD36 protein was primarily expressed intravascularly, and this expression differed by region, age, and sex in the mouse brain. Although male mice brains demonstrated an increase in CD36 protein with age in several cortices, basal ganglia, hippocampus, and midbrain, a decrease with age was observed in female mice in the same regions. These data suggest that distinctive age, region, and sex expression of CD36 in the brain may contribute to Aβ deposition and neuroinflammation in AD.
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Affiliation(s)
- Melissa K Edler
- Department of Anthropology, Kent State University, Kent, Ohio, USA.,School of Biomedical Sciences, Kent State University, Kent, Ohio, USA.,Brain Health Research Institute, Kent State University, Kent, Ohio, USA.,Department of Pharmaceutical Sciences, Northeast Ohio Medical University, Rootstown, Ohio, USA
| | - Cooper T Johnson
- Department of Pharmaceutical Sciences, Northeast Ohio Medical University, Rootstown, Ohio, USA
| | - Hashim S Ahmed
- Department of Pharmaceutical Sciences, Northeast Ohio Medical University, Rootstown, Ohio, USA
| | - Jason R Richardson
- Robert Stempel School of Public Health and Social Work, Florida International University, Miami, Florida, USA
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36
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Understanding lipotoxicity in NAFLD pathogenesis: is CD36 a key driver? Cell Death Dis 2020; 11:802. [PMID: 32978374 PMCID: PMC7519685 DOI: 10.1038/s41419-020-03003-w] [Citation(s) in RCA: 241] [Impact Index Per Article: 60.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Revised: 08/27/2020] [Accepted: 08/27/2020] [Indexed: 02/06/2023]
Abstract
Non-alcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver disease worldwide. NAFLD stages range from simple steatosis (NAFL) to non-alcoholic steatohepatitis (NASH) which can progress to cirrhosis and hepatocellular carcinoma. One of the crucial events clearly involved in NAFLD progression is the lipotoxicity resulting from an excessive fatty acid (FFA) influx to hepatocytes. Hepatic lipotoxicity occurs when the capacity of the hepatocyte to manage and export FFAs as triglycerides (TGs) is overwhelmed. This review provides succinct insights into the molecular mechanisms responsible for lipotoxicity in NAFLD, including ER and oxidative stress, autophagy, lipoapotosis and inflammation. In addition, we highlight the role of CD36/FAT fatty acid translocase in NAFLD pathogenesis. Up-to-date, it is well known that CD36 increases FFA uptake and, in the liver, it drives hepatosteatosis onset and might contribute to its progression to NASH. Clinical studies have reinforced the significance of CD36 by showing increased content in the liver of NAFLD patients. Interestingly, circulating levels of a soluble form of CD36 (sCD36) are abnormally elevated in NAFLD patients and positively correlate with the histological grade of hepatic steatosis. In fact, the induction of CD36 translocation to the plasma membrane of the hepatocytes may be a determining factor in the physiopathology of hepatic steatosis in NAFLD patients. Given all these data, targeting the fatty acid translocase CD36 or some of its functional regulators may be a promising therapeutic approach for the prevention and treatment of NAFLD.
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Ronda OAHO, van de Heijning BJM, de Bruin A, Thomas RE, Martini I, Koehorst M, Gerding A, Koster MH, Bloks VW, Jurdzinski A, Mulder NL, Havinga R, van der Beek EM, Reijngoud DJ, Kuipers F, Verkade HJ. Spontaneous liver disease in wild-type C57BL/6JOlaHsd mice fed semisynthetic diet. PLoS One 2020; 15:e0232069. [PMID: 32956351 PMCID: PMC7505464 DOI: 10.1371/journal.pone.0232069] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 08/16/2020] [Indexed: 11/19/2022] Open
Abstract
Mouse models are frequently used to study mechanisms of human diseases. Recently, we observed a spontaneous bimodal variation in liver weight in C57BL/6JOlaHsd mice fed a semisynthetic diet. We now characterized the spontaneous variation in liver weight and its relationship with parameters of hepatic lipid and bile acid (BA) metabolism. In male C57BL/6JOlaHsd mice fed AIN-93G from birth to postnatal day (PN)70, we measured plasma BA, lipids, Very low-density lipoprotein (VLDL)-triglyceride (TG) secretion, and hepatic mRNA expression patterns. Mice were sacrificed at PN21, PN42, PN63 and PN70. Liver weight distribution was bimodal at PN70. Mice could be subdivided into two nonoverlapping groups based on liver weight: 0.6 SD 0.1 g (approximately one-third of mice, small liver; SL), and 1.0 SD 0.1 g (normal liver; NL; p<0.05). Liver histology showed a higher steatosis grade, inflammation score, more mitotic figures and more fibrosis in the SL versus the NL group. Plasma BA concentration was 14-fold higher in SL (p<0.001). VLDL-TG secretion rate was lower in SL mice, both absolutely (-66%, p<0.001) and upon correction for liver weight (-44%, p<0.001). Mice that would later have the SL-phenotype showed lower food efficiency ratios during PN21-28, suggesting the cause of the SL phenotype is present at weaning (PN21). Our data show that approximately one-third of C57BL/6JOlaHsd mice fed semisynthetic diet develop spontaneous liver disease with aberrant histology and parameters of hepatic lipid, bile acid and lipoprotein metabolism. Study designs involving this mouse strain on semisynthetic diets need to take the SL phenotype into account. Plasma lipids may serve as markers for the identification of the SL phenotype.
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Affiliation(s)
- Onne A. H. O. Ronda
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | | | - Alain de Bruin
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- Dutch Molecular Pathology Center, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Rachel E. Thomas
- Dutch Molecular Pathology Center, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Ingrid Martini
- Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Martijn Koehorst
- Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Albert Gerding
- Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Mirjam H. Koster
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Vincent W. Bloks
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Angelika Jurdzinski
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Niels L. Mulder
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Rick Havinga
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Eline M. van der Beek
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- Danone Nutricia Research, Uppsalalaan, Utrecht, The Netherlands
| | - Dirk-Jan Reijngoud
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Folkert Kuipers
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Henkjan J. Verkade
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- * E-mail:
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C57BL/6J substrain differences in response to high-fat diet intervention. Sci Rep 2020; 10:14052. [PMID: 32820201 PMCID: PMC7441320 DOI: 10.1038/s41598-020-70765-w] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 07/29/2020] [Indexed: 02/07/2023] Open
Abstract
C57BL/6J-related mouse strains are widely used animal models for diet-induced obesity (DIO). Multiple vendors breed C57BL/6J-related substrains which may introduce genetic drift and environmental confounders such as microbiome differences. To address potential vendor/substrain specific effects, we compared DIO of C57BL/6J-related substrains from three different vendors: C57BL/6J (Charles Rivers), C57BL/6JBomTac (Taconic Bioscience) and C57BL/6JRj (Janvier). After local acclimatization, DIO was induced by either a high-fat diet (HFD, 60% energy from fat) or western diet (WD, 42% energy from fat supplemented with fructose in the drinking water). All three groups on HFD gained a similar amount of total body weight, yet the relative amount of fat percentage and mass of inguinal- and epididymal white adipose tissue (iWAT and eWAT) was lower in C57BL/6JBomTac compared to the two other C57BL/6J-releated substrains. In contrast to HFD, the three groups on WD responded differently in terms of body weight gain, where C57BL/6J was particularly prone to WD. This was associated with a relative higher amount of eWAT, iWAT, and liver triglycerides. Although the HFD and WD had significant impact on the microbiota, we did not observe any major differences between the three groups of mice. Together, these data demonstrate significant differences in HFD- and WD-induced adiposity in C57BL/6J-related substrains, which should be considered in the design of animal DIO studies.
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Rey E, Del Pozo-Maroto E, Marañón P, Beeler B, García-García Y, Landete P, Isaza SC, Farré R, García-Monzón C, Almendros I, González-Rodríguez Á. Intrahepatic Expression of Fatty Acid Translocase CD36 Is Increased in Obstructive Sleep Apnea. Front Med (Lausanne) 2020; 7:450. [PMID: 32850919 PMCID: PMC7431763 DOI: 10.3389/fmed.2020.00450] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 07/07/2020] [Indexed: 12/11/2022] Open
Abstract
Nocturnal intermittent hypoxia (IH) featuring obstructive sleep apnea (OSA) dysregulates hepatic lipid metabolism and might contribute to the development of non-alcoholic fatty liver disease (NAFLD) observed in OSA patients. However, further research is required to better understanding the molecular mechanisms underlying IH-induced hepatic lipid accumulation. Therefore, the aim of the present study was to determine the effects of OSA on hepatic CD36 expression and the impact of IH by using a mouse model of OSA. Histological analysis, lipid content and CD36 expression were assessed in livers from subjects who underwent liver biopsy and polygraphic study during sleep, and in livers from mice submitted to chronic IH mimicking OSA. Among those who presented OSA features, NAFLD were significantly more frequent than in control subjects with normal respiratory function (77.8 vs. 36.4%, respectively), and showed more severe liver disease. Interestingly, CD36 expression was significantly overexpressed within the liver of OSA patients with respect to controls, and a significant positive correlation was observed between hepatic levels of CD36 and the values of two well-known respiratory parameters that characterized OSA: apnea/hypopnea index (AHI) and oxygen desaturation index (ODI). Moreover, hepatic lipid accumulation as well as induction of hepatic lipogenic genes, and CD36 mRNA and protein expression were significantly higher in livers from mice exposed to IH conditions for 8 weeks than in their corresponding littermates. This study provides novel evidence that IH featuring OSA could contribute to NAFLD setup partly by upregulating hepatic CD36 expression.
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Affiliation(s)
- Esther Rey
- Research Unit, Hospital Universitario Santa Cristina, Instituto de Investigación Sanitaria Hospital Universitario de La Princesa, CIBERehd, Madrid, Spain
| | - Elvira Del Pozo-Maroto
- Research Unit, Hospital Universitario Santa Cristina, Instituto de Investigación Sanitaria Hospital Universitario de La Princesa, CIBERehd, Madrid, Spain
| | - Patricia Marañón
- Research Unit, Hospital Universitario Santa Cristina, Instituto de Investigación Sanitaria Hospital Universitario de La Princesa, CIBERehd, Madrid, Spain
| | - Brittany Beeler
- Research Unit, Hospital Universitario Santa Cristina, Instituto de Investigación Sanitaria Hospital Universitario de La Princesa, CIBERehd, Madrid, Spain
| | - Yaiza García-García
- Research Unit, Hospital Universitario Santa Cristina, Instituto de Investigación Sanitaria Hospital Universitario de La Princesa, CIBERehd, Madrid, Spain
| | - Pedro Landete
- Respiratory Medicine Department, Hospital Universitario de La Princesa, Instituto de Investigación Sanitaria Princesa Hospital Universitario de La Princesa, Madrid, Spain
| | - Stephania C Isaza
- Research Unit, Hospital Universitario Santa Cristina, Instituto de Investigación Sanitaria Hospital Universitario de La Princesa, CIBERehd, Madrid, Spain
| | - Ramón Farré
- Unitat de Biofísica i Bioenginyeria, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, CIBERES, IDIBAPS, Barcelona, Spain
| | - Carmelo García-Monzón
- Research Unit, Hospital Universitario Santa Cristina, Instituto de Investigación Sanitaria Hospital Universitario de La Princesa, CIBERehd, Madrid, Spain
| | - Isaac Almendros
- Unitat de Biofísica i Bioenginyeria, Facultat de Medicina i Ciències de la Salut, Universitat de Barcelona, CIBERES, IDIBAPS, Barcelona, Spain
| | - Águeda González-Rodríguez
- Research Unit, Hospital Universitario Santa Cristina, Instituto de Investigación Sanitaria Hospital Universitario de La Princesa, CIBERehd, Madrid, Spain
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Loss of macroH2A1 decreases mitochondrial metabolism and reduces the aggressiveness of uveal melanoma cells. Aging (Albany NY) 2020; 12:9745-9760. [PMID: 32401230 PMCID: PMC7288915 DOI: 10.18632/aging.103241] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 03/31/2020] [Indexed: 12/14/2022]
Abstract
Uveal melanoma (UM) is the most common primary intraocular tumour in adults. The most accurate prognostic factor of UM is classification by gene expression profiling. Currently, the role of epigenetics is much less defined compared to genetic mechanisms. We recently showed a strong prognostic role of the expression levels of histone variant macroH2A1 in UM patients. Here, we assessed the mechanistic effects of macroH2A1 on UM progression. UM cell lines were stably knocked down (KD) for macroH2A1, and proliferation and colony formation capacity were evaluated. Mitochondrial function was assayed through qPCR and HPLC analyses. Correlation between mitochondrial gene expression and cancer aggressiveness was studied using a bioinformatics approach. MacroH2A1 loss significantly attenuated UM cells proliferation and aggressiveness. Furthermore, genes involved in oxidative phosphorylation displayed a decreased expression in KD cells. Consistently, macroH2A1 loss resulted also in a significant decrease of mitochondrial transcription factor A (TFAM) expression, suggesting impaired mitochondrial replication. Bioinformatics analyses uncovered that the expression of genes involved in mitochondrial metabolism correlates with macroH2A1 and with cancer aggressiveness in UM patients. Altogether, our results suggest that macroH2A1 controls UM cells progression and it may represent a molecular target to develop new pharmacological strategies for UM treatment.
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de Conti A, Tryndyak V, Willett RA, Borowa-Mazgaj B, Watson A, Patton R, Khare S, Muskhelishvili L, Olson GR, Avigan MI, Cerniglia CE, Ross SA, Sanyal AJ, Beland FA, Rusyn I, Pogribny IP. Characterization of the variability in the extent of nonalcoholic fatty liver induced by a high-fat diet in the genetically diverse Collaborative Cross mouse model. FASEB J 2020; 34:7773-7785. [PMID: 32304142 DOI: 10.1096/fj.202000194r] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 03/24/2020] [Accepted: 03/25/2020] [Indexed: 02/06/2023]
Abstract
Interindividual variability and sexual dimorphisms in the development of nonalcoholic fatty liver disease (NAFLD) are still poorly understood. In the present study, male and female strains of Collaborative Cross (CC) mice were fed a high-fat and high-sucrose (HF/HS) diet or a control diet for 12 weeks to investigate interindividual- and sex-specific variations in the development of NAFLD. The severity of liver steatosis varied between sexes and individual strains and was accompanied by an elevation of serum markers of insulin resistance, including increases in total cholesterol, low-density lipoproteins, high-density lipoproteins, phospholipids, and glucose. The development of NAFLD was associated with overexpression of the critical fatty acid uptake and de novo lipogenesis genes Pparg, Mogat1, Cd36, Acaab1, Fabp2, and Gdf15 in male and female mice. The expression of Pparg, Mogat1, and Cd36 was positively correlated with liver triglycerides in male mice, and Mogat1 and Cd36 expression were positively correlated with liver triglycerides in female mice. Our results indicate the value of CC mice in combination with HF/HS diet-induced alterations as an approach to study the susceptibility and interindividual variabilities in the pathogenesis of nonalcoholic fatty liver and early nonalcoholic steatohepatitis at the population level, uncovering of susceptible and resistant cohorts, and identifying sex-specific molecular determinants of disease susceptibility.
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Affiliation(s)
- Aline de Conti
- Division of Biochemical Toxicology, FDA-National Center for Toxicological Research, Jefferson, AR, USA
| | - Volodymyr Tryndyak
- Division of Biochemical Toxicology, FDA-National Center for Toxicological Research, Jefferson, AR, USA
| | - Rose A Willett
- Division of Biochemical Toxicology, FDA-National Center for Toxicological Research, Jefferson, AR, USA
| | - Barbara Borowa-Mazgaj
- Division of Biochemical Toxicology, FDA-National Center for Toxicological Research, Jefferson, AR, USA
| | - Anna Watson
- Division of Biochemical Toxicology, FDA-National Center for Toxicological Research, Jefferson, AR, USA
| | - Ralph Patton
- Toxicologic Pathology Associates, Jefferson, AR, USA
| | - Sangeeta Khare
- Division of Microbiology, FDA-National Center for Toxicological Research, Jefferson, AR, USA
| | | | - Greg R Olson
- Toxicologic Pathology Associates, Jefferson, AR, USA
| | - Mark I Avigan
- Office of Pharmacovigilance and Epidemiology, FDA-Center for Drug Evaluation and Research, Silver Spring, MD, USA
| | - Carl E Cerniglia
- Division of Microbiology, FDA-National Center for Toxicological Research, Jefferson, AR, USA
| | - Sharon A Ross
- Division of Cancer Prevention, National Cancer Institute, Bethesda, MD, USA
| | - Arun J Sanyal
- Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA, USA
| | - Frederick A Beland
- Division of Biochemical Toxicology, FDA-National Center for Toxicological Research, Jefferson, AR, USA
| | - Ivan Rusyn
- Department of Veterinary Integrative Biosciences, Texas A&M University, College Station, TX, USA
| | - Igor P Pogribny
- Division of Biochemical Toxicology, FDA-National Center for Toxicological Research, Jefferson, AR, USA
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Jadeja RN, Jones MA, Fromal O, Powell FL, Khurana S, Singh N, Martin PM. Loss of GPR109A/HCAR2 induces aging-associated hepatic steatosis. Aging (Albany NY) 2020; 11:386-400. [PMID: 30659164 PMCID: PMC6366969 DOI: 10.18632/aging.101743] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 12/20/2018] [Indexed: 12/31/2022]
Abstract
GPR109A agonists have been used for the treatment of obesity however, the role of GPR109A in regulating aging-associated alterations in lipid metabolism is unknown. In this study we used Gpr109a-/- mice to investigate the effect of aging in the regulation of lipid accumulation. We observed that in mouse and human livers, in addition to Kupffer cells, GPR109A is expressed in hepatocytes. Over 12 months, compared to wild type (WT), Gpr109a-/- mice gained significantly more weight. Food intake and levels of serum lipids were similar among both groups. Compared to age-matched WT mice, 12-months old Gpr109a-/- mice had significantly increased liver weight, hepatic steatosis and serum markers of liver injury. The fatty liver phenotype in Gpr109a-/- mice was associated with increased hepatic expression of lipogenesis genes and decreased expression of lipolysis genes. Gpr109a-/- mice had significantly increased fat tissues, which was associated with significant increase in adipocyte diameter and surface area. Adipose tissue from Gpr109a-/- mice had increased expression of lipogenesis genes; however, expression of lipolytic genes was similar in both groups. Collectively, these results indicate that during aging, GPR109A modulates de novo lipid accumulation in liver and adipose tissue, and its dysregulation can lead to age-associated obesity and hepatic steatosis.
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Affiliation(s)
- Ravirajsinh N Jadeja
- Department of Biochemistry and Molecular Biology, Medical College of Georgia at Augusta University, Augusta, GA 30912, USA.,James and Jean Culver Vision Discovery Institute, Medical College of Georgia at Augusta University, Augusta, GA 30912, USA
| | - Malita A Jones
- Department of Biochemistry and Molecular Biology, Medical College of Georgia at Augusta University, Augusta, GA 30912, USA
| | - Ollya Fromal
- Department of Biochemistry and Molecular Biology, Medical College of Georgia at Augusta University, Augusta, GA 30912, USA
| | - Folami L Powell
- Department of Biochemistry and Molecular Biology, Medical College of Georgia at Augusta University, Augusta, GA 30912, USA.,James and Jean Culver Vision Discovery Institute, Medical College of Georgia at Augusta University, Augusta, GA 30912, USA.,Education Innovation Institute, Medical College of Georgia at Augusta University, Augusta, GA 30912, USA
| | - Sandeep Khurana
- Division of Gastroenterology, Hepatology and Nutrition and Weight Management, Geisinger Medical Center, Danville, PA 17822, USA
| | - Nagendra Singh
- Department of Biochemistry and Molecular Biology, Medical College of Georgia at Augusta University, Augusta, GA 30912, USA.,Georgia Cancer Center, Medical College of Georgia at Augusta University, Augusta, GA 30912, USA
| | - Pamela M Martin
- Department of Biochemistry and Molecular Biology, Medical College of Georgia at Augusta University, Augusta, GA 30912, USA.,James and Jean Culver Vision Discovery Institute, Medical College of Georgia at Augusta University, Augusta, GA 30912, USA.,Georgia Cancer Center, Medical College of Georgia at Augusta University, Augusta, GA 30912, USA.,Department of Ophthalmology, Medical College of Georgia at Augusta University, Augusta, GA 30912, USA
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Huang KT, Chen KD, Hsu LW, Kung CP, Li SR, Chen CC, Chiu KW, Goto S, Chen CL. Decreased PEDF Promotes Hepatic Fatty Acid Uptake and Lipid Droplet Formation in the Pathogenesis of NAFLD. Nutrients 2020; 12:nu12010270. [PMID: 31968655 PMCID: PMC7019565 DOI: 10.3390/nu12010270] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 01/14/2020] [Accepted: 01/15/2020] [Indexed: 01/10/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD), the leading cause of chronic liver diseases worldwide, ranges from simple steatosis to steatohepatitis, with the risk for progressive fibrosis or even cirrhosis. While simple steatosis is a relatively benign condition, the buildup of toxic lipid metabolites can induce chronic inflammation, ultimately triggering disease progression. Pigment epithelium-derived factor (PEDF) is a secreted, multifunctional glycoprotein with lipid metabolic activities. PEDF promotes lipolysis through binding to adipose triglyceride lipase (ATGL), a key enzyme for triglyceride breakdown. In the current study, we aimed to delineate how changes in PEDF expression affect hepatic lipid accumulation. Our data revealed that hepatic PEDF was downregulated in a mouse NAFLD model. We further showed that decreased PEDF levels in hepatocytes in vitro resulted in elevated fatty acid uptake and lipid droplet formation, with concomitant upregulation of fatty acid transport proteins CD36 and fatty acid binding protein 1 (FABP1). RNA sequencing analysis of PEDF knocked down hepatocytes revealed an alteration in gene expression profile toward lipid accumulation. Additionally, decreased PEDF promotes mobilization of fatty acids, an observation distinct from blocking ATGL activity. Taken together, our data suggest that hepatic PEDF downregulation causes molecular changes that favor triglyceride accumulation, which may further lead to NAFLD progression.
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Affiliation(s)
- Kuang-Tzu Huang
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan; (K.-D.C.); (C.-P.K.)
- Liver Transplantation Center, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan; (L.-W.H.); (S.-R.L.); (C.-L.C.)
- Correspondence: ; Tel.: +886-7-731-7123 (ext. 8193)
| | - Kuang-Den Chen
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan; (K.-D.C.); (C.-P.K.)
- Liver Transplantation Center, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan; (L.-W.H.); (S.-R.L.); (C.-L.C.)
| | - Li-Wen Hsu
- Liver Transplantation Center, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan; (L.-W.H.); (S.-R.L.); (C.-L.C.)
| | - Chao-Pin Kung
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan; (K.-D.C.); (C.-P.K.)
- Liver Transplantation Center, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan; (L.-W.H.); (S.-R.L.); (C.-L.C.)
| | - Shu-Rong Li
- Liver Transplantation Center, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan; (L.-W.H.); (S.-R.L.); (C.-L.C.)
| | - Chien-Chih Chen
- Department of Psychiatry, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan;
| | - King-Wah Chiu
- Liver Transplantation Center, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan; (L.-W.H.); (S.-R.L.); (C.-L.C.)
- Division of Hepato-Gastroenterology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan
| | - Shigeru Goto
- Fukuoka Institute of Occupational Health, Fukuoka 815-0081, Japan;
| | - Chao-Long Chen
- Liver Transplantation Center, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan; (L.-W.H.); (S.-R.L.); (C.-L.C.)
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Huang Y, Xiao Y, Liu Y, Guo M, Guo Q, Zhou F, Liu T, Su T, Xiao Y, Luo X. MicroRNA-188 regulates aging-associated metabolic phenotype. Aging Cell 2020; 19:e13077. [PMID: 31762181 PMCID: PMC6974730 DOI: 10.1111/acel.13077] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 10/09/2019] [Accepted: 10/25/2019] [Indexed: 12/24/2022] Open
Abstract
With the increasing aging population, aging-associated diseases are becoming epidemic worldwide, including aging-associated metabolic dysfunction. However, the underlying mechanisms are poorly understood. In the present study, we aimed to investigate the role of microRNA miR-188 in the aging-associated metabolic phenotype. The results showed that the expression of miR-188 increased gradually in brown adipose tissue (BAT) and inguinal white adipose tissue (iWAT) of mice during aging. MiR-188 knockout mice were resistant to the aging-associated metabolic phenotype and had higher energy expenditure. Meanwhile, adipose tissue-specific miR-188 transgenic mice displayed the opposite phenotype. Mechanistically, we identified the thermogenic-related gene Prdm16 (encoding PR domain containing 16) as the direct target of miR-188. Notably, inhibition of miR-188 expression in BAT and iWAT of aged mice by tail vein injection of antagomiR-188 ameliorated aging-associated metabolic dysfunction significantly. Taken together, our findings suggested that miR-188 plays an important role in the regulation of the aging-associated metabolic phenotype, and targeting miR-188 could be an effective strategy to prevent aging-associated metabolic dysfunction.
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Affiliation(s)
- Yan Huang
- Department of Endocrinology, Endocrinology Research CenterXiangya Hospital of Central South UniversityChangshaChina
| | - Ye Xiao
- Department of Endocrinology, Endocrinology Research CenterXiangya Hospital of Central South UniversityChangshaChina
| | - Ya Liu
- Department of Endocrinology, Endocrinology Research CenterXiangya Hospital of Central South UniversityChangshaChina
| | - Min Guo
- Department of Endocrinology, Endocrinology Research CenterXiangya Hospital of Central South UniversityChangshaChina
| | - Qi Guo
- Department of Endocrinology, Endocrinology Research CenterXiangya Hospital of Central South UniversityChangshaChina
| | - Fangliang Zhou
- Department of Biochemistry and Molecular BiologyHunan University of Chinese MedicineChangshaChina
| | - Ting Liu
- Department of EndocrinologyChangsha Central HospitalChangshaChina
| | - Tian Su
- Department of Endocrinology, Endocrinology Research CenterXiangya Hospital of Central South UniversityChangshaChina
| | - Yuzhong Xiao
- Department of Endocrinology, Endocrinology Research CenterXiangya Hospital of Central South UniversityChangshaChina
| | - Xiang‐Hang Luo
- Department of Endocrinology, Endocrinology Research CenterXiangya Hospital of Central South UniversityChangshaChina
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45
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Quintana-Castro R, Aguirre-Maldonado I, Soto-Rodríguez I, Deschamps-Lago RA, Gruber-Pagola P, Urbina de Larrea YK, Juárez-Rivera VE, Ramos-Manuel LE, Alexander-Aguilera A. Cd36 gene expression in adipose and hepatic tissue mediates the lipids accumulation in liver of obese rats with sucrose-induced hepatic steatosis. Prostaglandins Other Lipid Mediat 2019; 147:106404. [PMID: 31838198 DOI: 10.1016/j.prostaglandins.2019.106404] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 11/24/2019] [Accepted: 12/10/2019] [Indexed: 12/19/2022]
Abstract
Obesity is considered a global epidemic and is mainly associated with the development of diabetes, cardiovascular diseases and Non-Alcoholic Fatty Liver (NAFLD). The pathogenesis between obesity and hepatic steatosis is partially known, but could involve differentiated or tissue-specific participation of the expression of Cd36 mRNA that codes for a receptor which is a transporter of free fatty acids (FFA) in different tissues, favoring the lipids storage. This relative expression was evaluated in adipose and liver tissue in rats with steatosis after consumption of sucrose for 30 and 40 weeks. Ten Wistar rats were divided into two experimental groups (St-30 and St-40), which received a standard diet plus 30 % sucrose in their water intake. These rats showed a significant increase in abdominal fat, serum biochemical determinations, HOMA-IR; as well as, changes in adipocytes size and mild portal hepatitis and grade 2 hepatic steatosis. The relative expression of Cd36 mRNA increased in liver tissue after 30 (4.5-fold) and 40 (8.5-fold) weeks of sucrose ingestión but no in adipose tissue; with respect to control group (P < 0.05). This expression was associated with a significant increase in the levles of sCD36 in serum, which is indicator of the presence of the FFA transporter in the hepatocyte membrane causing lipids accumulation. The above shows the link between the adipose and hepatic tissue for the accumulation of steatotic fat in the liver through time, mediated by the relative expression of cd36 mRNA that encodes for the FFA transporter.
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Affiliation(s)
- Rodolfo Quintana-Castro
- Facultad de Bioanálisis, Universidad Veracruzana, Carmen Serdán s/n. Col. Flores Magón, Veracruz, Ver., 91700, Mexico; Escuela de Medicina, Universidad Cristóbal Colón, Carr. Veracruz-Medellín s/n. Col. Puente Moreno, Boca del Río, Ver., 94271, Mexico
| | - Isaac Aguirre-Maldonado
- Escuela de Medicina, Universidad Cristóbal Colón, Carr. Veracruz-Medellín s/n. Col. Puente Moreno, Boca del Río, Ver., 94271, Mexico
| | - Ida Soto-Rodríguez
- Facultad de Bioanálisis, Universidad Veracruzana, Carmen Serdán s/n. Col. Flores Magón, Veracruz, Ver., 91700, Mexico
| | - Rosa A Deschamps-Lago
- Facultad de Bioanálisis, Universidad Veracruzana, Carmen Serdán s/n. Col. Flores Magón, Veracruz, Ver., 91700, Mexico
| | - Peter Gruber-Pagola
- Instituto de Investigaciones Medico-Biológicas, Universidad Veracruzana, Carmen Serdán s/n. Col. Flores Magón, Veracruz, Ver., 91700, Mexico
| | - Yolanda K Urbina de Larrea
- Escuela de Medicina, Universidad Cristóbal Colón, Carr. Veracruz-Medellín s/n. Col. Puente Moreno, Boca del Río, Ver., 94271, Mexico
| | - Victoria E Juárez-Rivera
- Escuela de Medicina, Universidad Cristóbal Colón, Carr. Veracruz-Medellín s/n. Col. Puente Moreno, Boca del Río, Ver., 94271, Mexico
| | - Luis E Ramos-Manuel
- Facultad de Bioanálisis, Universidad Veracruzana, Carmen Serdán s/n. Col. Flores Magón, Veracruz, Ver., 91700, Mexico
| | - Alfonso Alexander-Aguilera
- Facultad de Bioanálisis, Universidad Veracruzana, Carmen Serdán s/n. Col. Flores Magón, Veracruz, Ver., 91700, Mexico.
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Mazzoli A, Crescenzo R, Cigliano L, Spagnuolo MS, Cancelliere R, Gatto C, Iossa S. Early Hepatic Oxidative Stress and Mitochondrial Changes Following Western Diet in Middle Aged Rats. Nutrients 2019; 11:nu11112670. [PMID: 31694213 PMCID: PMC6893784 DOI: 10.3390/nu11112670] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 10/29/2019] [Accepted: 10/31/2019] [Indexed: 01/06/2023] Open
Abstract
To assess the effect of 4 weeks of high fat-high fructose feeding on whole body composition, energy balance, specific markers of oxidative stress and inflammation, and insulin sensitivity in the liver of middle-aged rats, rats (1 year) were fed a diet rich in saturated fatty acids and fructose (HFF rats), mimicking the “Western diet”, and compared with rats of the same age that were fed a low fat diet (LF rats). HFF rats exhibited a significant increase in the gain of body weight, energy, and lipids compared to LF rats. HFF rats also showed hepatic insulin resistance, together with an increase in plasma triglycerides, cholesterol, and tumor necrosis factor alpha. Hepatic lipids, triglycerides and cholesterol were higher in HFF rats, while a significant decrease in Stearoyl-CoA desaturase activity was found in this tissue. A marked increase in the protein amount of complex I, concomitant to a decrease in its contribution to mitochondrial respiration, was found in HFF rats. Lipid peroxidation and Nitro-Tyrosine content, taken as markers of oxidative stress, as well as NADPH oxidase activity, were significantly higher in HFF rats, while the antioxidant enzyme catalase decreased in these rats. Myeloperoxidase activity and lipocalin content increased, while peroxisome proliferator activated receptor gamma decreased in HFF rats. The present results provide evidence that middle-aged rats show susceptibility to a short-term “Western diet”, exhibiting altered redox homeostasis, insulin resistance, and early mitochondrial alterations in the liver. Therefore, this type of dietary habits should be drastically limited to pursue a “healthy aging”.
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Affiliation(s)
- Arianna Mazzoli
- Department of Biology, Federico II University, Via Cintia,80126 Naples, Italy; (A.M.); (R.C.); (L.C.); (R.C.); (C.G.)
| | - Raffaella Crescenzo
- Department of Biology, Federico II University, Via Cintia,80126 Naples, Italy; (A.M.); (R.C.); (L.C.); (R.C.); (C.G.)
| | - Luisa Cigliano
- Department of Biology, Federico II University, Via Cintia,80126 Naples, Italy; (A.M.); (R.C.); (L.C.); (R.C.); (C.G.)
| | - Maria Stefania Spagnuolo
- Department of Bio-Agrofood Science, Institute for the Animal Production System in Mediterranean Environment, National Research Council Naples (CNR-ISPAAM), 80147 Naples, Italy;
| | - Rosa Cancelliere
- Department of Biology, Federico II University, Via Cintia,80126 Naples, Italy; (A.M.); (R.C.); (L.C.); (R.C.); (C.G.)
| | - Cristina Gatto
- Department of Biology, Federico II University, Via Cintia,80126 Naples, Italy; (A.M.); (R.C.); (L.C.); (R.C.); (C.G.)
| | - Susanna Iossa
- Department of Biology, Federico II University, Via Cintia,80126 Naples, Italy; (A.M.); (R.C.); (L.C.); (R.C.); (C.G.)
- Correspondence: ; Tel.: +39-081-2538111
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Zhou J, Ho CT, Long P, Meng Q, Zhang L, Wan X. Preventive Efficiency of Green Tea and Its Components on Nonalcoholic Fatty Liver Disease. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:5306-5317. [PMID: 30892882 DOI: 10.1021/acs.jafc.8b05032] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) is a typical chronic liver disease highly correlated with metabolic syndrome. Growing prevalence of NAFLD is supposed to be linked with the unhealthy lifestyle, especially high-calorie diet and lacking enough exercise. Currently, there is no validated pharmacological therapy for NAFLD except for weight reduction. However, many dietary strategies had preventive effects on the development of liver steatosis or its progression. As one of the most common beverages, green tea contains abundant bioactive compounds possessing antioxidant, lipid-lowering, and anti-inflammatory effects, as well as improving insulin resistance and gut dysbiosis that can alleviate the risk of NAFLD. Hence, in this review, we summarized the studies of green tea and its components on NAFLD from animal experiments and human interventions and discussed the potential mechanisms. Available evidence suggested that tea consumption is promising to prevent NAFLD, and further mechanisms and clinical studies need to be investigated.
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Affiliation(s)
| | - Chi-Tang Ho
- Department of Food Science , Rutgers University , New Brunswick , New Jersey , United States
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Méndez-Lara KA, Farré N, Santos D, Rivas-Urbina A, Metso J, Sánchez-Quesada JL, Llorente-Cortes V, Errico TL, Lerma E, Jauhiainen M, Martín-Campos JM, Alonso N, Escolà-Gil JC, Blanco-Vaca F, Julve J. Human ApoA-I Overexpression Enhances Macrophage-Specific Reverse Cholesterol Transport but Fails to Prevent Inherited Diabesity in Mice. Int J Mol Sci 2019; 20:E655. [PMID: 30717414 PMCID: PMC6387412 DOI: 10.3390/ijms20030655] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 01/26/2019] [Accepted: 01/29/2019] [Indexed: 12/18/2022] Open
Abstract
Human apolipoprotein A-I (hApoA-I) overexpression improves high-density lipoprotein (HDL) function and the metabolic complications of obesity. We used a mouse model of diabesity, the db/db mouse, to examine the effects of hApoA-I on the two main functional properties of HDL, i.e., macrophage-specific reverse cholesterol transport (m-RCT) in vivo and the antioxidant potential, as well as the phenotypic features of obesity. HApoA-I transgenic (hA-I) mice were bred with nonobese control (db/+) mice to generate hApoA-I-overexpressing db/+ offspring, which were subsequently bred to obtain hA-I-db/db mice. Overexpression of hApoA-I significantly increased weight gain and the incidence of fatty liver in db/db mice. Weight gain was mainly explained by the increased caloric intake of hA-I-db/db mice (>1.2-fold). Overexpression of hApoA-I also produced a mixed type of dyslipidemia in db/db mice. Despite these deleterious effects, the overexpression of hApoA-I partially restored m-RCT in db/db mice to levels similar to nonobese control mice. Moreover, HDL from hA-I-db/db mice also enhanced the protection against low-density lipoprotein (LDL) oxidation compared with HDL from db/db mice. In conclusion, overexpression of hApoA-I in db/db mice enhanced two main anti-atherogenic HDL properties while exacerbating weight gain and the fatty liver phenotype. These adverse metabolic side-effects were also observed in obese mice subjected to long-term HDL-based therapies in independent studies and might raise concerns regarding the use of hApoA-I-mediated therapy in obese humans.
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Affiliation(s)
- Karen Alejandra Méndez-Lara
- Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau i Institut d'Investigació Biomèdica Sant Pau, IIB-Sant Pau, 08025 Barcelona, Spain.
- Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain.
| | - Núria Farré
- Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau i Institut d'Investigació Biomèdica Sant Pau, IIB-Sant Pau, 08025 Barcelona, Spain.
| | - David Santos
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas, CIBERDEM, 28029 Madrid, Spain.
| | - Andrea Rivas-Urbina
- Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau i Institut d'Investigació Biomèdica Sant Pau, IIB-Sant Pau, 08025 Barcelona, Spain.
- Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain.
| | - Jari Metso
- Minerva Foundation Institute for Medical Research, Biomedicum 2U and National Institute for Health and Welfare, Genomics and Biomarkers Unit, FIN-00290 Helsinki, Finland.
| | - José Luis Sánchez-Quesada
- Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau i Institut d'Investigació Biomèdica Sant Pau, IIB-Sant Pau, 08025 Barcelona, Spain.
- Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain.
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas, CIBERDEM, 28029 Madrid, Spain.
| | - Vicenta Llorente-Cortes
- CSIC-ICCC-IIB-Sant Pau i CSIC-Institut d'Investigacions Biomèdiques de Barcelona (IIBB), 08025 Barcelona, Spain.
- CIBER de Enfermedades Cardiovasculares, CIBERCV, 28029 Madrid, Spain.
| | - Teresa L Errico
- Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau i Institut d'Investigació Biomèdica Sant Pau, IIB-Sant Pau, 08025 Barcelona, Spain.
- Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain.
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas, CIBERDEM, 28029 Madrid, Spain.
| | - Enrique Lerma
- Servei de Bioquímica, Hospital de la Santa Creu i Sant Pau i Institut d'Investigació Biomèdica de l'Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, 08041 Barcelona, Spain.
- Departament de Patologia, Hospital de la Santa Creu i Sant Pau, 08041 Barcelona, Spain.
- Departament de Ciències Morfològiques, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain.
| | - Matti Jauhiainen
- Minerva Foundation Institute for Medical Research, Biomedicum 2U and National Institute for Health and Welfare, Genomics and Biomarkers Unit, FIN-00290 Helsinki, Finland.
| | - Jesús M Martín-Campos
- Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau i Institut d'Investigació Biomèdica Sant Pau, IIB-Sant Pau, 08025 Barcelona, Spain.
- Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain.
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas, CIBERDEM, 28029 Madrid, Spain.
| | - Núria Alonso
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas, CIBERDEM, 28029 Madrid, Spain.
- Servei d'Endocrinologia, Hospital Universitari Germans Trias i Pujol, Badalona, 08916 Barcelona, Spain.
| | - Joan Carles Escolà-Gil
- Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau i Institut d'Investigació Biomèdica Sant Pau, IIB-Sant Pau, 08025 Barcelona, Spain.
- Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain.
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas, CIBERDEM, 28029 Madrid, Spain.
| | - Francisco Blanco-Vaca
- Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain.
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas, CIBERDEM, 28029 Madrid, Spain.
- Servei de Bioquímica, Hospital de la Santa Creu i Sant Pau i Institut d'Investigació Biomèdica de l'Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, 08041 Barcelona, Spain.
| | - Josep Julve
- Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau i Institut d'Investigació Biomèdica Sant Pau, IIB-Sant Pau, 08025 Barcelona, Spain.
- Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Barcelona, Spain.
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas, CIBERDEM, 28029 Madrid, Spain.
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Huang KT, Hsu LW, Chen KD, Kung CP, Goto S, Chen CL. Decreased PEDF Expression Promotes Adipogenic Differentiation through the Up-Regulation of CD36. Int J Mol Sci 2018; 19:ijms19123992. [PMID: 30544997 PMCID: PMC6321369 DOI: 10.3390/ijms19123992] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2018] [Revised: 12/05/2018] [Accepted: 12/07/2018] [Indexed: 01/10/2023] Open
Abstract
Adipogenesis is a tightly regulated cellular process that involves the action of multiple signaling pathways. Characterization of regulators that are associated with adipose development is crucial to understanding the mechanisms underlying obesity and other metabolic disorders. Pigment epithelium-derived factor (PEDF) is a secreted glycoprotein that was first described as a neurotrophic factor. The role of PEDF in lipid metabolism was established when adipose triglyceride lipase (ATGL), a major triglyceride hydrolase, was characterized as its binding partner. In this study, we investigated the downstream effects of PEDF on adipogenic differentiation using rat adipose-derived stem cells (AdSCs) and the mouse pre-adipocyte cell line 3T3-L1. Knocking down PEDF in differentiating cells resulted in elevated levels of ATGL and CD36, as well as other adipogenic markers, with a concomitant increase in adipocyte number. CD36, a scavenger receptor for a variety of ligands, regulated proliferation and lipogenic gene expression during adipogenesis. The CD36 increase due to PEDF down-regulation might be a result of elevated PPARγ. We further demonstrated that PEDF expression was regulated by dexamethasone, a synthetic glucocorticoid that is widely used for adipogenesis at the transcriptional level. Taken together, our findings highlight that PEDF negatively regulates adipogenesis through the regulation of various signaling intermediates, and it may play a crucial role in lipid metabolic disorders.
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Affiliation(s)
- Kuang-Tzu Huang
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan.
- Liver Transplantation Center, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan.
| | - Li-Wen Hsu
- Liver Transplantation Center, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan.
| | - Kuang-Den Chen
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan.
- Liver Transplantation Center, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan.
| | - Chao-Pin Kung
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan.
- Liver Transplantation Center, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan.
| | - Shigeru Goto
- Fukuoka Institute of Occupational Health, Fukuoka 815-0081, Japan.
| | - Chao-Long Chen
- Liver Transplantation Center, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan.
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50
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Kaltenecker D, Themanns M, Mueller KM, Spirk K, Suske T, Merkel O, Kenner L, Luís A, Kozlov A, Haybaeck J, Müller M, Han X, Moriggl R. Hepatic growth hormone - JAK2 - STAT5 signalling: Metabolic function, non-alcoholic fatty liver disease and hepatocellular carcinoma progression. Cytokine 2018; 124:154569. [PMID: 30389231 DOI: 10.1016/j.cyto.2018.10.010] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 10/05/2018] [Accepted: 10/11/2018] [Indexed: 12/12/2022]
Abstract
The rising prevalence of obesity came along with an increase in associated metabolic disorders in Western countries. Non-alcoholic fatty liver disease (NAFLD) represents the hepatic manifestation of the metabolic syndrome and is linked to primary stages of liver cancer development. Growth hormone (GH) regulates various vital processes such as energy supply and cellular regeneration. In addition, GH regulates various aspects of liver physiology through activating the Janus kinase (JAK) 2- signal transducer and activator of transcription (STAT) 5 pathway. Consequently, disrupted GH - JAK2 - STAT5 signaling in the liver alters hepatic lipid metabolism and is associated with NAFLD development in humans and mouse models. Interestingly, while STAT5 as well as JAK2 deficiency correlates with hepatic lipid accumulation, recent studies suggest that these proteins have unique ambivalent functions in chronic liver disease progression and tumorigenesis. In this review, we focus on the consequences of altered GH - JAK2 - STAT5 signaling for hepatic lipid metabolism and liver cancer development with an emphasis on lessons learned from genetic knockout models.
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Affiliation(s)
- Doris Kaltenecker
- Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Vienna, Austria; Ludwig Boltzmann Institute for Cancer Research, Vienna, Austria
| | - Madeleine Themanns
- Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Vienna, Austria; Ludwig Boltzmann Institute for Cancer Research, Vienna, Austria; Medical University of Vienna, Vienna, Austria
| | - Kristina M Mueller
- Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Vienna, Austria; Ludwig Boltzmann Institute for Cancer Research, Vienna, Austria
| | - Katrin Spirk
- Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Vienna, Austria; Ludwig Boltzmann Institute for Cancer Research, Vienna, Austria; Medical University of Vienna, Vienna, Austria
| | - Tobias Suske
- Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Olaf Merkel
- Department of Clinical Pathology, Medical University of Vienna, Vienna, Austria
| | - Lukas Kenner
- Ludwig Boltzmann Institute for Cancer Research, Vienna, Austria; Department of Clinical Pathology, Medical University of Vienna, Vienna, Austria; Institute of Laboratory Animal Pathology, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Andreia Luís
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria
| | - Andrey Kozlov
- Ludwig Boltzmann Institute for Experimental and Clinical Traumatology, Vienna, Austria
| | - Johannes Haybaeck
- Diagnostic & Research Center for Molecular BioMedicine, Institute of Pathology, Medical University of Graz, Austria; Department of Pathology, Medical Faculty, Otto-von-Guericke University, Magdeburg, Germany; Department of Pathology, Medical University of Innsbruck, Innsbruck, Austria
| | - Mathias Müller
- Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Vienna, Austria
| | - Xiaonan Han
- Key Laboratory of Human Disease Comparative Medicine, the Ministry of Health; Institute of Laboratory Animal Sciences (ILAS), Chinese Academy of Medical Science (CAMS) and Peking Union Medical College (PUMC), Beijing, PR China; Division of Gastroenterology, Hepatology and Nutrition, Cincinnati Children's Hospital Medical Center (CCHMC), Cincinnati, OH, USA
| | - Richard Moriggl
- Institute of Animal Breeding and Genetics, University of Veterinary Medicine Vienna, Vienna, Austria; Ludwig Boltzmann Institute for Cancer Research, Vienna, Austria; Medical University of Vienna, Vienna, Austria.
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