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Yanagisawa H, Maeda H, Noguchi I, Tanaka M, Wada N, Nagasaki T, Kobayashi K, Kanazawa G, Taguchi K, Chuang VTG, Sakai H, Nakashima H, Kinoshita M, Kitagishi H, Iwakiri Y, Sasaki Y, Tanaka Y, Otagiri M, Watanabe H, Maruyama T. Carbon monoxide-loaded red blood cells ameliorate metabolic dysfunction-associated steatohepatitis progression via enhancing AMP-activated protein kinase activity and inhibiting Kupffer cell activation. Redox Biol 2024; 76:103314. [PMID: 39163766 DOI: 10.1016/j.redox.2024.103314] [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: 07/09/2024] [Revised: 08/09/2024] [Accepted: 08/14/2024] [Indexed: 08/22/2024] Open
Abstract
Metabolic dysfunction-associated steatohepatitis (MASH) is a progressive form of nonalcoholic fatty liver disease characterised by fat accumulation, inflammation, oxidative stress, fibrosis, and impaired liver regeneration. In this study, we found that heme oxygenase-1 (HO-1) is induced in both MASH patients and in a MASH mouse model. Further, hepatic carbon monoxide (CO) levels in MASH model mice were >2-fold higher than in healthy mice, suggesting that liver HO-1 is activated as MASH progresses. Based on these findings, we used CO-loaded red blood cells (CO-RBCs) as a CO donor in the liver, and evaluated their therapeutic effect in methionine-choline deficient diet (MCDD)-induced and high-fat-diet (HFD)-induced MASH model mice. Intravenously administered CO-RBCs effectively delivered CO to the MASH liver, where they prevented fat accumulation by promoting fatty acid oxidation via AMP-activated protein kinase (AMPK) activation and peroxisome proliferator-activated receptor induction. They also markedly suppressed Kupffer cell activation and their corresponding anti-inflammatory and antioxidative stress activities in MASH mice. CO-RBCs also helped to restore liver regeneration in mice with HFD-induced MASH by activating AMPK. We confirmed the underlying mechanisms by performing in vitro experiments in RAW264.7 cells and palmitate-stimulated HepG2 cells. Taken together, CO-RBCs show potential as a promising cellular treatment for MASH.
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Affiliation(s)
- Hiroki Yanagisawa
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan.
| | - Hitoshi Maeda
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan.
| | - Isamu Noguchi
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan.
| | - Motohiko Tanaka
- Department of Gastroenterology and Hepatology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan; Department of Gastroenterology and Hepatology, Saiseikai Kumamoto Hospital, Kumamoto, Japan.
| | - Naoki Wada
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan.
| | - Taisei Nagasaki
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan.
| | - Kazuki Kobayashi
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan.
| | - Gai Kanazawa
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan.
| | - Kazuaki Taguchi
- Division of Pharmacodynamics, Faculty of Pharmacy, Keio University, Tokyo, Japan.
| | - Victor Tuan Giam Chuang
- Pharmacy Discipline, Curtin Medical School, Faculty of Health Sciences, Curtin University, GPO Box U1987, Perth, 6845, Western Australia, Australia.
| | - Hiromi Sakai
- Department of Chemistry, Nara Medical University, Nara, Japan.
| | - Hiroyuki Nakashima
- Department of Immunology and Microbiology, National Defense Medical College, Tokorozawa, Saitama, Japan.
| | - Manabu Kinoshita
- Department of Immunology and Microbiology, National Defense Medical College, Tokorozawa, Saitama, Japan.
| | - Hiroaki Kitagishi
- Department of Molecular Chemistry and Biochemistry, Doshisha University, Kyotanabe, Kyoto, 610-0321, Japan.
| | - Yasuko Iwakiri
- Section of Digestive Diseases, Yale University School of Medicine, New Haven, CT, 06510, United States.
| | - Yutaka Sasaki
- Department of Gastroenterology and Hepatology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.
| | - Yasuhito Tanaka
- Department of Gastroenterology and Hepatology, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan.
| | - Masaki Otagiri
- Faculty of Pharmaceutical Sciences and DDS Research Institute, Sojo University, Kumamoto, Japan.
| | - Hiroshi Watanabe
- Department of Clinical Pharmacy and Therapeutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan.
| | - Toru Maruyama
- Department of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, Japan.
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Li Y, Zhao W, Sair AT, Li T, Liu RH. Ferulic acid restores mitochondrial dynamics and autophagy via AMPK signaling pathway in a palmitate-induced hepatocyte model of metabolic syndrome. Sci Rep 2024; 14:18970. [PMID: 39152139 PMCID: PMC11329500 DOI: 10.1038/s41598-024-66362-w] [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: 12/21/2023] [Accepted: 07/01/2024] [Indexed: 08/19/2024] Open
Abstract
Mitochondrial dysfunction, characterized by elevated oxidative stress, impaired energy balance, and dysregulated mitochondrial dynamics, is a hallmark of metabolic syndrome (MetS) and its comorbidities. Ferulic acid (FA), a principal phenolic compound found in whole grains, has demonstrated potential in ameliorating oxidative stress and preserving energy homeostasis. However, the influence of FA on mitochondrial health within the context of MetS remains unexplored. Moreover, the impact of FA on autophagy, which is essential for maintaining energy homeostasis and mitochondrial integrity, is not fully understood. Here, we aimed to study the mechanisms of action of FA in regulating mitochondrial health and autophagy using palmitate-treated HepG2 hepatocytes as a MetS cell model. We found that FA improved mitochondrial health by restoring redox balance and optimizing mitochondrial dynamics, including biogenesis and the fusion/fission ratio. Additionally, FA was shown to recover autophagy and activate AMPK-related cell signaling. Our results provide new insights into the therapeutic potential of FA as a mitochondria-targeting agent for the prevention and treatment of MetS.
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Affiliation(s)
- Yitong Li
- Department of Food Science, Cornell University, 245 Stocking Hall, Ithaca, NY, 14853, USA
| | - Weiyang Zhao
- Department of Food Science, Cornell University, 245 Stocking Hall, Ithaca, NY, 14853, USA
| | - Ali Tahir Sair
- Department of Food Science, Cornell University, 245 Stocking Hall, Ithaca, NY, 14853, USA
| | - Tong Li
- Department of Food Science, Cornell University, 245 Stocking Hall, Ithaca, NY, 14853, USA
| | - Rui Hai Liu
- Department of Food Science, Cornell University, 245 Stocking Hall, Ithaca, NY, 14853, USA.
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Chiu CH, Chen MY, Lieu JJ, Chen CC, Chang CC, Chyau CC, Peng RY. Inhibitory Effect of Styrylpyrone Extract of Phellinus linteus on Hepatic Steatosis in HepG2 Cells. Int J Mol Sci 2023; 24:ijms24043672. [PMID: 36835095 PMCID: PMC9959220 DOI: 10.3390/ijms24043672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 02/08/2023] [Accepted: 02/10/2023] [Indexed: 02/16/2023] Open
Abstract
The prevalence of nonalcoholic fatty liver disease (NAFLD) is estimated to be approximately about 25.24% of the population worldwide. NAFLD is a complex syndrome and is characterized by a simple benign hepatocyte steatosis to more severe steatohepatitis in the liver pathology. Phellinus linteus (PL) is traditionally used as a hepatoprotective supplement. Styrylpyrone-enriched extract (SPEE) obtained from the PL mycelia has been shown to have potential inhibition effects on high-fat- and high-fructose-diet-induced NAFLD. In the continuous study, we aimed to explore the inhibitory effects of SPEE on free fatty acid mixture O/P [oleic acid (OA): palmitic acid (PA); 2:1, molar ratio]-induced lipid accumulation in HepG2 cells. Results showed that SPEE presented the highest free radical scavenging ability on DPPH and ABTS, and reducing power on ferric ions, better than that of partitions obtained from n-hexane, n-butanol and distilled water. In free-fatty-acid-induced lipid accumulation in HepG2 cells, SPEE showed an inhibition effect on O/P-induced lipid accumulation of 27% at a dosage of 500 μg/mL. As compared to the O/P induction group, the antioxidant activities of superoxide dismutase, glutathione peroxidase and catalase were enhanced by 73%, 67% and 35%, respectively, in the SPEE group. In addition, the inflammatory factors (TNF-α, IL-6 and IL-1β) were significantly down-regulated by the SPEE treatment. The expressions of anti-adipogenic genes involved in hepatic lipid metabolism of 5' adenosine monophosphate (AMP)-activated protein kinase (AMPK), sirtuin 1 (SIRT1) and peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α) were enhanced in the SPEE supplemented HepG2 cells. In the protein expression study, p-AMPK, SIRT1 and PGC1-α were significantly increased to 121, 72 and 62%, respectively, after the treatment of SPEE. Conclusively, the styrylpyrone-enriched extract SPEE can ameliorate lipid accumulation and decrease inflammation and oxidative stress through the activation of SIRT1/AMPK/PGC1-α pathways.
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Affiliation(s)
- Chun-Hung Chiu
- Research Institute of Biotechnology, Hungkuang University, Shalu District, Taichung City 43302, Taiwan
- Department of Program in Animal Healthcare, Hungkuang University, Shalu District, Taichung City 43302, Taiwan
| | - Ming-Yao Chen
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Taipei Medical University—Shuang-Ho Hospital, New Taipei City 235041, Taiwan
| | - Jun-Jie Lieu
- Research Institute of Biotechnology, Hungkuang University, Shalu District, Taichung City 43302, Taiwan
| | - Chin-Chu Chen
- Grape King Biotechnology Center, Longtan District, Taoyuan 325002, Taiwan
| | - Chun-Chao Chang
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Taipei Medical University Hospital, Taipei 11031, Taiwan
- TMU Research Center for Digestive Medicine, Taipei Medical University, Taipei 110, Taiwan
- Correspondence: (C.-C.C.); (C.-C.C.); Tel.: +886-4-26318652 (Charng-Cherng Chyau); Fax: +886-4-26525386 (Charng-Cherng Chyau)
| | - Charng-Cherng Chyau
- Research Institute of Biotechnology, Hungkuang University, Shalu District, Taichung City 43302, Taiwan
- Correspondence: (C.-C.C.); (C.-C.C.); Tel.: +886-4-26318652 (Charng-Cherng Chyau); Fax: +886-4-26525386 (Charng-Cherng Chyau)
| | - Robert Y. Peng
- Research Institute of Biotechnology, Hungkuang University, Shalu District, Taichung City 43302, Taiwan
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei 110301, Taiwan
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Chen P, Jia R, Liu Y, Cao M, Zhou L, Zhao Z. Progress of Adipokines in the Female Reproductive System: A Focus on Polycystic Ovary Syndrome. Front Endocrinol (Lausanne) 2022; 13:881684. [PMID: 35692386 PMCID: PMC9178087 DOI: 10.3389/fendo.2022.881684] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 04/19/2022] [Indexed: 12/16/2022] Open
Abstract
Adipose tissue, one type of loose connective tissue in the human body, maintains the primary task of energy storage. Adipose tissue is not only an energy reservoir but also plays a vital role as the largest endocrine organ of the whole body via releasing a variety of adipokines, which participate in many pathophysiological processes, such as energy metabolism regulation, glucose and lipid metabolism, and inflammation. Polycystic ovary syndrome (PCOS) is a disorder that mainly involves the female reproductive system, affecting women of childbearing age particularly. Insulin resistance (IR) and hyperandrogenemia (HA) have been implicated as a critical link involving the etiology and outcome of PCOS. A great deal of studies has bridged the gap between adipokines (such as Adiponectin, Chemerin, Metrnl, Apelin, Resistin, Visfatin, Leptin, Vaspin, Lipocalin 2, and Omentin) and reproductive fitness. In this review, we will focus on the adipokines' functions on PCOS and come up with some points of view on the basis of current research.
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Affiliation(s)
| | | | | | | | | | - Zhiming Zhao
- Department of Reproductive Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang, China
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5
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Impact of adiponectin and quercetin on alleviating palmitic acid-induced kidney cell damage through Keap1/Nrf2 pathway. GENE REPORTS 2021. [DOI: 10.1016/j.genrep.2021.101362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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6
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Che N, Sun X, Gu L, Wang X, Shi J, Sun Y, Xu L, Liu R, Wang J, Zhu F, Peng N, Xiao F, Hu D, Lu L, Qiu W, Zhang M. Adiponectin Enhances B-Cell Proliferation and Differentiation via Activation of Akt1/STAT3 and Exacerbates Collagen-Induced Arthritis. Front Immunol 2021; 12:626310. [PMID: 33815378 PMCID: PMC8012765 DOI: 10.3389/fimmu.2021.626310] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 02/08/2021] [Indexed: 12/12/2022] Open
Abstract
Although B cells have been shown to contribute to the pathogenesis of rheumatoid arthritis (RA), the precise role of B cells in RA needs to be explored further. Our previous studies have revealed that adiponectin (AD) is expressed at high levels in inflamed synovial joint tissues, and its expression is closely correlated with progressive bone erosion in patients with RA. In this study, we investigated the possible role of AD in B cell proliferation and differentiation. We found that AD stimulation could induce B cell proliferation and differentiation in cell culture. Notably, local intraarticular injection of AD promoted B cell expansion in joint tissues and exacerbated arthritis in mice with collagen-induced arthritis (CIA). Mechanistically, AD induced the activation of PI3K/Akt1 and STAT3 and promoted the proliferation and differentiation of B cells. Moreover, STAT3 bound to the promoter of the Blimp-1 gene, upregulated Blimp-1 expression at the transcriptional level, and promoted B cell differentiation. Collectively, we observed that AD exacerbated CIA by enhancing B cell proliferation and differentiation mediated by the PI3K/Akt1/STAT3 axis.
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Affiliation(s)
- Nan Che
- Department of Rheumatology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xiaoxuan Sun
- Department of Rheumatology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Lei Gu
- Department of Rheumatology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Xiaohui Wang
- Department of Pathology, Shenzhen Institute of Research and Innovation, The University of Hong Kong, Hong Kong, China
- Chongqing International Institute for Immunology, Hong Kong, China
| | - Jingjing Shi
- Clinical Medical Science of the First Clinical Medical College, Nanjing Medical University, Nanjing, China
| | - Yi Sun
- Clinical Medical Science of the First Clinical Medical College, Nanjing Medical University, Nanjing, China
| | - Lingxiao Xu
- Department of Rheumatology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Rui Liu
- Department of Rheumatology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Junke Wang
- Department of Rheumatology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Fengyi Zhu
- Department of Rheumatology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Na Peng
- Department of Rheumatology and Nephrology, The Second People's Hospital of China Three Gorges University, Yichang, China
| | - Fan Xiao
- Department of Pathology, Shenzhen Institute of Research and Innovation, The University of Hong Kong, Hong Kong, China
- Chongqing International Institute for Immunology, Hong Kong, China
| | - Dajun Hu
- Department of Rheumatology and Nephrology, The Second People's Hospital of China Three Gorges University, Yichang, China
| | - Liwei Lu
- Department of Pathology, Shenzhen Institute of Research and Innovation, The University of Hong Kong, Hong Kong, China
- Chongqing International Institute for Immunology, Hong Kong, China
| | - Wen Qiu
- Department of Immunology, Key Laboratory of Immunological Environment and Disease, Nanjing Medical University, Nanjing, China
| | - Miaojia Zhang
- Department of Rheumatology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
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Chen YC, Huang TC, Lin YY. Expression Profile of Circulatory Adiponectin and Plasma Variables in Broilers. BRAZILIAN JOURNAL OF POULTRY SCIENCE 2021. [DOI: 10.1590/1806-9061-2020-1302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | | | - YY Lin
- National Taiwan University, Taiwan
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Xu H, Zhao Q, Song N, Yan Z, Lin R, Wu S, Jiang L, Hong S, Xie J, Zhou H, Wang R, Jiang X. AdipoR1/AdipoR2 dual agonist recovers nonalcoholic steatohepatitis and related fibrosis via endoplasmic reticulum-mitochondria axis. Nat Commun 2020; 11:5807. [PMID: 33199780 PMCID: PMC7669869 DOI: 10.1038/s41467-020-19668-y] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2019] [Accepted: 10/27/2020] [Indexed: 12/13/2022] Open
Abstract
Chronic nonalcoholic steatohepatitis (NASH) is a metabolic disorder that often leads to liver fibrosis, a condition with limited therapy options. Adiponectin is an adipocytokine that regulates glucose and lipid metabolism via binding to its receptors AdipoR1 and AdipoR2, and AdipoRs signaling is reported to enhance fatty acid oxidation and glucose uptake. Here, we synthesize and report an adiponectin-based agonist JT003, which potently improves insulin resistance in high fat diet induced NASH mice and suppresses hepatic stellate cells (HSCs) activation in CCl4 induced liver fibrosis. Mechanistic studies indicate that JT003 simultaneously stimulates AdipoR1- and AdipoR2- mediated signaling pathways as well as the PI3K-Akt pathway. Moreover, JT003 treatment significantly improves ER-mitochondrial axis function, which contributes to the reduced HSCs activation. Thus, the AdipoR1/AdipoR2 dual agonist improves both NASH and fibrosis in mice models, which provides the pharmacological and biological foundation for developing AdipoRs-based therapeutic agents on liver fibrosis. Nonalcoholic steatohepatitis (NASH) and associated liver fibrosis have limited therapy options. Here the authors report a novel adiponectin-based dual agonist for adiponectin receptors 1 and 2 with a longer half-life, and show that it ameliorates NASH and liver fibrosis in mouse models.
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Affiliation(s)
- Hongjiao Xu
- School of Pharmaceutical Sciences, Sun Yat-Sen University, 132 East Outer Ring Road, Guangzhou, 510006, China
| | - Qian Zhao
- School of Pharmaceutical Sciences, Sun Yat-Sen University, 132 East Outer Ring Road, Guangzhou, 510006, China
| | - Nazi Song
- School of Pharmaceutical Sciences, Sun Yat-Sen University, 132 East Outer Ring Road, Guangzhou, 510006, China
| | - Zhibin Yan
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Runfeng Lin
- School of Pharmaceutical Sciences, Sun Yat-Sen University, 132 East Outer Ring Road, Guangzhou, 510006, China
| | - Shuohan Wu
- School of Pharmaceutical Sciences, Sun Yat-Sen University, 132 East Outer Ring Road, Guangzhou, 510006, China
| | - Lili Jiang
- School of Pharmaceutical Sciences, Sun Yat-Sen University, 132 East Outer Ring Road, Guangzhou, 510006, China
| | - Sihua Hong
- School of Pharmaceutical Sciences, Sun Yat-Sen University, 132 East Outer Ring Road, Guangzhou, 510006, China
| | - Junqiu Xie
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Huihao Zhou
- School of Pharmaceutical Sciences, Sun Yat-Sen University, 132 East Outer Ring Road, Guangzhou, 510006, China
| | - Rui Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Xianxing Jiang
- School of Pharmaceutical Sciences, Sun Yat-Sen University, 132 East Outer Ring Road, Guangzhou, 510006, China.
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CTRP9: An emerging potential anti-aging molecule in brain. Cell Signal 2020; 73:109694. [PMID: 32540339 DOI: 10.1016/j.cellsig.2020.109694] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 06/10/2020] [Indexed: 12/14/2022]
Abstract
C1q/tumor necrosis factor (TNF)-related proteins (CTRPs) particularly CTRP9, have been established to be as adiponectin (APN) highly conserved paralogs which assemble several APN regulatory functions. Recently, growing body of evidences drawn significant attention to evaluate metabolic and cardiovascular effect of CTRP9. However, the potential role of CTRP9 in brain tissue has not yet fully illustrated. Here, we aimed to uncover latest advances regarding the CTRP9 related signaling pathways and during brain aging process.
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Moulin S, Thomas A, Arnaud C, Arzt M, Wagner S, Maier LS, Pépin JL, Godin-Ribuot D, Gaucher J, Belaidi E. Cooperation Between Hypoxia-Inducible Factor 1α and Activating Transcription Factor 4 in Sleep Apnea-Mediated Myocardial Injury. Can J Cardiol 2020; 36:936-940. [PMID: 32387037 DOI: 10.1016/j.cjca.2020.04.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 04/01/2020] [Accepted: 04/01/2020] [Indexed: 01/21/2023] Open
Abstract
Chronic intermittent hypoxia (CIH) occurring during sleep apnea amplifies infarct size owing to ischemia-reperfusion. CIH activates hypoxia-inducible factor 1 (HIF-1) and activating transcription factor 4 (ATF4). However, whether HIF-1 and ATF4 interact to promote cardiomyocyte death remains unexplored. For the first time, we observed that in myocardium from apneic patients, CCAAT enhancer-binding protein homologous protein (CHOP) expression is increased and HIF-1α expression is correlated with sleep apnea severity. In mice, single-allele deletion of HIF-1α prevents CIH increase in CHOP expression and infarct size. We uncovered a physical interaction between HIF-1α and ATF4 in CIH that may represent a novel cardiomyocyte death complex.
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Affiliation(s)
- Sophie Moulin
- Laboratoire HP2, Institut National de la Santé et de la Recherche Médicale, Université Grenoble Alpes, Grenoble, France; Institut National de la Santé et de la Recherche Médicale U1042, Grenoble, France
| | - Amandine Thomas
- Laboratoire HP2, Institut National de la Santé et de la Recherche Médicale, Université Grenoble Alpes, Grenoble, France; Institut National de la Santé et de la Recherche Médicale U1042, Grenoble, France
| | - Claire Arnaud
- Laboratoire HP2, Institut National de la Santé et de la Recherche Médicale, Université Grenoble Alpes, Grenoble, France; Institut National de la Santé et de la Recherche Médicale U1042, Grenoble, France
| | - Michael Arzt
- Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - Stefan Wagner
- Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - Lars S Maier
- Department of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany
| | - Jean-Louis Pépin
- Laboratoire HP2, Institut National de la Santé et de la Recherche Médicale, Université Grenoble Alpes, Grenoble, France; Institut National de la Santé et de la Recherche Médicale U1042, Grenoble, France; Centre Hospitalier Universitaire des Alpes, Grenoble, France
| | - Diane Godin-Ribuot
- Laboratoire HP2, Institut National de la Santé et de la Recherche Médicale, Université Grenoble Alpes, Grenoble, France; Institut National de la Santé et de la Recherche Médicale U1042, Grenoble, France
| | - Jonathan Gaucher
- Laboratoire HP2, Institut National de la Santé et de la Recherche Médicale, Université Grenoble Alpes, Grenoble, France; Institut National de la Santé et de la Recherche Médicale U1042, Grenoble, France
| | - Elise Belaidi
- Laboratoire HP2, Institut National de la Santé et de la Recherche Médicale, Université Grenoble Alpes, Grenoble, France; Institut National de la Santé et de la Recherche Médicale U1042, Grenoble, France.
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Chen CY, Li SJ, Wang CY, Mersmann HJ, Ding ST. The impact of DRP1 on myocardial fibrosis in the obese minipig. Eur J Clin Invest 2020; 50:e13204. [PMID: 31990365 DOI: 10.1111/eci.13204] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 01/21/2020] [Accepted: 01/23/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND The heart is a highly oxidative tissue, thus mitochondria play a major role in maintaining optimal cardiac function. Our previous study established a dietary-induced obese minipig with cardiac fibrosis. The aim of this study was to elucidate the role of mitochondrial dynamics in cardiac fibrosis of obese minipigs. DESIGN Four-month-old Lee-Sung minipigs were randomly divided into two groups: a control group (C) and an obese group (O) by feeding a control diet or a high-fat diet (HFD) for 6 months. Exposure of H9c2 cardiomyoblasts to palmitate was used to explore the effects of high-fat on induction of myocardial injury in vitro. RESULTS The O pigs displayed greater heart weight and cardiac collagen accumulation. Obese pigs exhibited a lower antioxidant capacity, ATP concentration, and higher oxidative stress in the left ventricle (LV). The HFD caused downregulation in protein expression of PGC-1α and OPA1, and upregulation of DRP1, FIS1, and PINK1 in the LV of O compared to C pigs. Furthermore, palmitate induced apoptosis and decreased ATP content in H9c2 cells. Palmitate elevated the protein expression of DRP1 and PINK1 in these cells. Inhibition of DRP1 protein expression by siDRP1 in H9c2 cells resulted in enhanced ATP and decreased palmitate-induced apoptosis. CONCLUSIONS These results suggest that mitochondrial dynamics were linked to the progression of obesity-related cardiac injury. Inhibition of DRP1 after palmitate exposure in H9c2 cells resulted in improved ATP level and decreased apoptosis in vitro suggesting that mitochondrial fission serves a key role in progression of obesity-induced cardiac fibrosis.
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Affiliation(s)
- Ching-Yi Chen
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan
| | - Sin-Jin Li
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan
| | - Chia-Yu Wang
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan
| | - Harry J Mersmann
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan
| | - Shih-Torng Ding
- Department of Animal Science and Technology, National Taiwan University, Taipei, Taiwan
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Xing Y, Zhang C, Zhai F, Zhou T, Cui X, Han Z, Peng D, Tong G. Study on the Mechanism of Shugan Xiaozhi Fang on Cells with Non-alcoholic Fatty Liver Disease. OPEN CHEM 2019; 17:1328-1338. [DOI: 10.1515/chem-2019-0145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023] Open
Abstract
AbstractCells with non-alcoholic fatty liver disease (NAFLD) were studied to determine the mechanism of liver deficiency via the AdipoR2-PPARa pathway. NAFLD cells were randomly divided into a normal control group, blank control group, model group, low dose group, medium dose group, and high dose group. The NAFLD models were established by incubating the cells with linoleic acid (LA) and palmitic acid (PA) (2:1) for 24 h. The test groups were incubated with different doses of Shugan Xiaozhi Fang extract. The pathological changes in cells that accumulated lipids were detected by Oil Red O staining. Malondialdehyde (MDA) and triglyceride (TG) levels were measured. The apoptosis of cells was evaluated by flow cytometry. The levels of AdipoR2, PPARa, CD36, acyl-CoA mRNA, and protein were confirmed by RT- PCR and Western blot. The results of the Oil Red O staining demonstrated that the NAFLD cell model was successfully established. Compared with the model group, the levels of TG and MDA in the groups that received low, medium, and high doses of Shugan Xiaozhi were significantly lower (P<0.01), and a dose effect was evident. In addition, the expression of AdipoR2, PPARa, CD36, acyl-CoA protein, and mRNA in the Shugan Xiaozhi-treated groups was upregulated. Furthermore, the levels of AdipoR2, PPAR, CD36, acyl-CoA protein, and mRNA in all drug treatment groups that were extracted from L-O2 normal human hepatocytes were significantly upregulated (P<0.01). Moreover, the factor pattern of HepG2 human liver carcinoma cells was similar to that of L-O2. The levels of AdipoR, CD36, acyl-CoA, and AdipoR mRNA in the HepG2 low group were increased (P<0.05). AdipoR, PPAR, CD36, and acyl-CoA protein levels and AdipoR mRNA expression were significantly increased in the intermediate dose group and high dose group (P<0.01). Shugan Xiaozhi Fang attenuates hepatic lipid deposition in NAFLD induced by incubating with LA and PA for 24 h, which is associated with the activation of the AdipoR2-PPARα pathway.
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Affiliation(s)
- Yufeng Xing
- Hepatology Department, Shenzhen Traditional Chinese Medicine Hospital, 1 Fuhua Road, Futian District, Shenzhen 518033, Guangdong, China
| | - Chuantao Zhang
- Department of Respiration, Hospital of Chengdu university of Traditional Chinese Medicine, Chengdu, Sichuan, China, 610072
| | - Fenfen Zhai
- Shenzhen Futian Center for chronic disease control, 9 Xinsha Road, Futian District, Shenzhen, Guangdong, China, 518048
| | - Tianran Zhou
- Hepatology Department, Shenzhen Traditional Chinese Medicine Hospital, 1 Fuhua Road, Futian District, Shenzhen 518033, Guangdong, China
| | - Xiang Cui
- Hepatology Department, Shenzhen Traditional Chinese Medicine Hospital, 1 Fuhua Road, Futian District, Shenzhen 518033, Guangdong, China
| | - Zhiyi Han
- Hepatology Department, Shenzhen Traditional Chinese Medicine Hospital, 1 Fuhua Road, Futian District, Shenzhen 518033, Guangdong, China
| | - Deti Peng
- Hepatology Department, Shenzhen Traditional Chinese Medicine Hospital, 1 Fuhua Road, Futian District, Shenzhen 518033, Guangdong, China
| | - Guangdong Tong
- Hepatology Department, Shenzhen Traditional Chinese Medicine Hospital, 1 Fuhua Road, Futian District, Shenzhen 518033, Guangdong, China
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Zhao L, Zhang JH, Sherchan P, Krafft PR, Zhao W, Wang S, Chen S, Guo Z, Tang J. Administration of rCTRP9 Attenuates Neuronal Apoptosis Through AdipoR1/PI3K/Akt Signaling Pathway after ICH in Mice. Cell Transplant 2019; 28:756-766. [PMID: 30642187 PMCID: PMC6686438 DOI: 10.1177/0963689718822809] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Targeting neuronal apoptosis after intracerebral hemorrhage (ICH) may be an important therapeutic strategy for ICH patients. Emerging evidence indicates that C1q/TNF-Related Protein 9 (CTRP9), a newly discovered adiponectin receptor agonist, exerts neuroprotection in cerebrovascular disease. The aim of this study was to investigate the anti-apoptotic role of CTRP9 after experimental ICH and to explore the underlying molecular mechanisms. ICH was induced in mice via intrastriatal injection of bacterial collagenase. Recombinant CTRP9 (rCTRP9) was administrated intranasally at 1 h after ICH. To elucidate the underlying mechanisms, adiponectin receptor1 small interfering ribonucleic acid (AdipoR1 siRNA) and selective PI3 K inhibitor LY294002 were administered prior to rCTRP9 treatment. Western blots, neurofunctional assessments, immunofluorescence staining, and Fluoro-Jade C (FJC) staining experiments were performed. Administration of rCTRP9 significantly improved both short- and long-term neurofunctional behavior after ICH. RCTRP9 treatment significantly increased the expression of AdipoR1, PI3 K, p-Akt, and Bcl-2, while at the same time was found to decrease the expression of Bax in the brain, which was reversed by inhibition of AdipoR1 and PI3 K. The neuroprotective effect of rCTRP9 after ICH was mediated by attenuation of neuronal apoptosis via the AdipoR1/PI3K/Akt signaling pathway; therefore, rCTRP9 should be further evaluated as a potential therapeutic agent for ICH patients.
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Affiliation(s)
- Lianhua Zhao
- 1 Department of Neurology, Tianjin TEDA Hospital, Tianjin, China.,2 Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - John H Zhang
- 2 Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Prativa Sherchan
- 2 Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
| | - Paul R Krafft
- 3 Department of Neurological Surgery and Brain Repair, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Wei Zhao
- 1 Department of Neurology, Tianjin TEDA Hospital, Tianjin, China
| | - Sa Wang
- 4 Department of Neurology, Affilicated Wenling Hospital of Wenzhou Medical University, Wenling, Zhejiang, China
| | - Shengpan Chen
- 2 Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA.,5 Department of Neurosurgery, Affiliated Haikou Hospital, Xiangya School of Medicine, Central South University, Haikou, China
| | - Zaiyu Guo
- 1 Department of Neurology, Tianjin TEDA Hospital, Tianjin, China
| | - Jiping Tang
- 2 Department of Physiology and Pharmacology, Loma Linda University, Loma Linda, CA, USA
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Pal China S, Sanyal S, Chattopadhyay N. Adiponectin signaling and its role in bone metabolism. Cytokine 2018; 112:116-131. [PMID: 29937410 DOI: 10.1016/j.cyto.2018.06.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Revised: 06/06/2018] [Accepted: 06/09/2018] [Indexed: 12/14/2022]
Abstract
Adiponectin, the most prevalent adipo-cytokine in plasma plays critical metabolic and anti-inflammatory roles is fast emerging as an important molecular target for the treatment of metabolic disorders. Adiponectin action is critical in multiple organs including cardio-vascular system, muscle, liver, adipose tissue, brain and bone. Adiponectin signaling in bone has been a topic of active investigation lately. Human association studies and multiple mice models of gene deletion/modification failed to define a clear cause and effect of adiponectin signaling in bone. The most plausible reason could be the multimeric forms of adiponectin that display differential binding to receptors (adipoR1 and adipoR2) with cell-specific receptor variants in bone. Discovery of small molecule agonist of adipoR1 suggested a salutary role of this receptor in bone metabolism. The downstream signaling of adipoR1 in osteoblasts involves stimulation of oxidative phosphorylation leading to increased differentiation via the likely suppression of wnt inhibitor, sclerostin. On the other hand, the inflammation modulatory effect of adiponectin signaling suppresses the RANKL (receptor activator of nuclear factor κ-B ligand) - to - OPG (osteprotegerin) ratio in osteoblasts leading to the suppression of osteoclastogenic response. This review will discuss the adiponectin signaling and its role in skeletal homeostasis and critically assess whether adipoR1 could be a therapeutic target for the treatment of metabolic bone diseases.
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Affiliation(s)
- Shyamsundar Pal China
- Division of Endocrinology and CSIR-Central Drug Research Institute, Sitapur Road, Lucknow 226 031, India
| | - Sabyasachi Sanyal
- Division of Biochemistry, CSIR-Central Drug Research Institute, Sitapur Road, Lucknow 226 031, India
| | - Naibedya Chattopadhyay
- Division of Endocrinology and CSIR-Central Drug Research Institute, Sitapur Road, Lucknow 226 031, India.
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Zhu Q, Yang J, Zhu R, Jiang X, Li W, He S, Jin J. Dihydroceramide-desaturase-1-mediated caspase 9 activation through ceramide plays a pivotal role in palmitic acid-induced HepG2 cell apoptosis. Apoptosis 2018; 21:1033-44. [PMID: 27364952 DOI: 10.1007/s10495-016-1267-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In this study, results showed that the inhibition of PA-induced HepG2 cell growth takes place in a time- and concentration-dependent manner, that activation of caspase 9 is necessary for PA-induced HepG2 cell apoptosis, that dihydroceramide desaturase 1 (DES1) plays a key role in PA-mediated caspase 9 and caspase 3 activation, and that palmitoleic acid (POA), an omega-7 monounsaturated fatty acid, reverses PA-induced apoptosis through DES1 → Ceramide → Caspase 9 → Caspase 3 signaling.
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Affiliation(s)
- Qun Zhu
- Laboratory of Hepatobiliary and Pancreatic Surgery, Affiliated Hospital of Guilin Medical University, Guilin, 541001, Guangxi, People's Republic of China
- Department of Endocrinology, The Second Affiliated Hospital of Nanjing Medical University, 210011, Nanjing, Jiangsu, People's Republic of China
- China-USA Lipids in Health and Disease Research Center, Guilin Medical University, Guilin, 541001, Guangxi, People's Republic of China
| | - Jianjun Yang
- Laboratory of Hepatobiliary and Pancreatic Surgery, Affiliated Hospital of Guilin Medical University, Guilin, 541001, Guangxi, People's Republic of China
| | - Rongping Zhu
- Laboratory of Hepatobiliary and Pancreatic Surgery, Affiliated Hospital of Guilin Medical University, Guilin, 541001, Guangxi, People's Republic of China
| | - Xin Jiang
- Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repair, Guilin Medical University, Guilin, 541001, Guangxi, People's Republic of China
| | - Wanlian Li
- Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repair, Guilin Medical University, Guilin, 541001, Guangxi, People's Republic of China
| | - Songqing He
- Laboratory of Hepatobiliary and Pancreatic Surgery, Affiliated Hospital of Guilin Medical University, Guilin, 541001, Guangxi, People's Republic of China.
- Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repair, Guilin Medical University, Guilin, 541001, Guangxi, People's Republic of China.
| | - Junfei Jin
- Laboratory of Hepatobiliary and Pancreatic Surgery, Affiliated Hospital of Guilin Medical University, Guilin, 541001, Guangxi, People's Republic of China.
- China-USA Lipids in Health and Disease Research Center, Guilin Medical University, Guilin, 541001, Guangxi, People's Republic of China.
- Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repair, Guilin Medical University, Guilin, 541001, Guangxi, People's Republic of China.
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Artemisia iwayomogi plus Curcuma longa Synergistically Ameliorates Nonalcoholic Steatohepatitis in HepG2 Cells. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 2017:4390636. [PMID: 29234397 PMCID: PMC5664258 DOI: 10.1155/2017/4390636] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 09/10/2017] [Indexed: 01/01/2023]
Abstract
The combination of Artemisia iwayomogi and Curcuma longa radix is frequently prescribed for liver diseases in TKM. However, the synergic effects of the two herbs on nonalcoholic steatohepatitis (NASH) have not yet been studied. Therefore, we investigated the anti-NASH effects of the water extract of A. iwayomogi (AI), C. longa radix (CL), and combination of the two herbs (ACE). Hepatic steatosis and NASH were induced in HepG2 cells by treatment with palmitic acid (PA, for 6 h) with/without pretreatment of ACE (25 or 50 μg/mL), AI (50 or 100 μg/mL), CL (50 or 100 μg/mL), curcumin (5 μg/mL), or scopoletin (5 μg/mL). The PA treatment (200 μM) drastically altered intracellular triglyceride levels, total cholesterol, and expression levels of genes related to lipid metabolism (CD36, SREBP1c, PPAR-γ, and PPAR-α), whereas pretreatment with ACE significantly attenuated these alterations. ACE also protected HepG2 cells from PA- (300 μM-) induced endoplasmic reticulum (ER) stress and apoptosis and attenuated the related key molecules including GRP78, eIF2, and CHOP, respectively. In conclusion, we found synergic effects of A. iwayomogi and C. longa on NASH, supporting the clinical potential for fatty liver disorders. In addition, modulation of ER stress-relative molecules would be involved in its underlying mechanism.
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Mora-García G, Ruiz-Díaz MS, Espitia-Almeida F, Gómez-Camargo D. Variations in ADIPOR1 But Not ADIPOR2 are Associated With Hypertriglyceridemia and Diabetes in an Admixed Latin American Population. Rev Diabet Stud 2017; 14:311-328. [PMID: 29145541 PMCID: PMC6115010 DOI: 10.1900/rds.2017.14.311] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2017] [Revised: 07/17/2017] [Accepted: 08/29/2017] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Adiponectin is a hormone secreted by adipose tissue. It regulates glycolysis and lipolysis and is involved in the pathophysiology of diabetes and related disorders. Its activity is mainly mediated by the transmembrane receptors AdipoR1 and AdipoR2, which are encoded by ADIPOR1 (1q32.1) and ADIPOR2 (12p13.33) genes, respectively. In genetic association studies, single nucleotide polymorphisms (SNPs) in or near these genes have been associated with metabolic alterations. However, these relationships are still controversial. AIM The aim of this work was to analyze possible associations between ADIPOR1/2 and diabetes and other metabolic disorders. METHODS A genetic association study was carried out in an admixed Latin American population. A sample of 200 adults was analyzed. Clinical and serum-biochemical characteristics were measured to diagnose obesity, abdominal obesity, hypertension, hyperglycemia, hypertriglyceridemia, low HDLc, insulin resistance (HOMA-IR), and diabetes. Three SNPs were genotyped in ADIPOR1 (rs10494839, rs12733285, and rs2275737) and ADIPOR2 (rs11061937, rs11612383, and rs2286383). For the association analysis, an additive model was assessed through logistic regression. An admixture adjustment was performed using a Monte-Carlo-Markov-Chain method, assuming a three-hybrid substructure (k = 3). RESULTS Two SNPs in ADIPOR1 were associated with diabetes: rs10494839 (OR = 3.88, adjusted p < 0.03) and rs12733285 (OR = 4.72, adjusted p < 0.03). Additionally, rs10494839 was associated with hypertriglyceridemia (OR = 2.16, adjusted p < 0.01). None of the SNPs in ADIPOR2 were associated with metabolic disorders. CONCLUSIONS ADIPOR1 was consistently associated with diabetes and hypertriglyceridemia. This association was maintained even after adjusting for genetic stratification. There were no significant associations involving ADIPOR2.
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Affiliation(s)
- Gustavo Mora-García
- Doctorate in Tropical Medicine, Faculty of Medicine, Universidad de Cartagena. Cartagena de Indias, Colombia
| | - María S. Ruiz-Díaz
- Doctorate in Tropical Medicine, Faculty of Medicine, Universidad de Cartagena. Cartagena de Indias, Colombia
| | - Fabian Espitia-Almeida
- Biochemistry Master Program, Faculty of Medicine, Universidad de Cartagena. Cartagena de Indias, Colombia
| | - Doris Gómez-Camargo
- Doctorate in Tropical Medicine, Faculty of Medicine, Universidad de Cartagena. Cartagena de Indias, Colombia
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Zeng T, Zhang CL, Zhao N, Guan MJ, Xiao M, Yang R, Zhao XL, Yu LH, Zhu ZP, Xie KQ. Impairment of Akt activity by CYP2E1 mediated oxidative stress is involved in chronic ethanol-induced fatty liver. Redox Biol 2017; 14:295-304. [PMID: 28987868 PMCID: PMC5633250 DOI: 10.1016/j.redox.2017.09.018] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Accepted: 09/24/2017] [Indexed: 12/30/2022] Open
Abstract
Protein kinase B (PKB/Akt) plays important roles in the regulation of lipid homeostasis, and impairment of Akt activity has been demonstrated to be involved in the development of non-alcoholic fatty liver disease (NAFLD). Previous studies suggest that cytochrome P4502E1 (CYP2E1) plays causal roles in the pathogenesis of alcoholic fatty liver (AFL). We hypothesized that Akt activity might be impaired due to CYP2E1-induced oxidative stress in chronic ethanol-induced hepatic steatosis. In this study, we found that chronic ethanol-induced hepatic steatosis was accompanied with reduced phosphorylation of Akt at Thr308 in mice liver. Chronic ethanol exposure had no effects on the protein levels of phosphatidylinositol 3 kinase (PI3K) and phosphatase and tensin homologue deleted on chromosome ten (PTEN), and led to a slight decrease of phosphoinositide-dependent protein kinase 1 (PDK-1) protein level. Ethanol exposure resulted in increased levels of malondialdehyde (MDA) and 4-hydroxynonenal (4-HNE)-Akt adducts, which was significantly inhibited by chlormethiazole (CMZ), an efficient CYP2E1 inhibitor. Interestingly, N-acetyl-L-cysteine (NAC) significantly attenuated chronic ethanol-induced hepatic fat accumulation and the decline of Akt phosphorylation at Thr308. In the in vitro studies, Akt phosphorylation was suppressed in CYP2E1-expressing HepG2 (CYP2E1-HepG2) cells compared with the negative control HepG2 (NC-HepG2) cells, and 4-HNE treatment led to significant decrease of Akt phosphorylation at Thr308 in wild type HepG2 cells. Lastly, pharmacological activation of Akt by insulin-like growth factor-1 (IGF-1) significantly alleviated chronic ethanol-induced fatty liver in mice. Collectively, these results indicate that CYP2E1-induced oxidative stress may be responsible for ethanol-induced suppression of Akt phosphorylation and pharmacological modulation of Akt in liver may be an effective strategy for the treatment of ethanol-induced fatty liver.
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Affiliation(s)
- Tao Zeng
- Institute of Toxicology, School of Public Health, Shandong University, China.
| | - Cui-Li Zhang
- Institute of Toxicology, School of Public Health, Shandong University, China
| | - Ning Zhao
- Institute of Toxicology, School of Public Health, Shandong University, China
| | - Min-Jie Guan
- Institute of Toxicology, School of Public Health, Shandong University, China
| | - Mo Xiao
- Institute of Toxicology, School of Public Health, Shandong University, China
| | - Rui Yang
- Institute of Toxicology, School of Public Health, Shandong University, China
| | - Xiu-Lan Zhao
- Institute of Toxicology, School of Public Health, Shandong University, China
| | - Li-Hua Yu
- Institute of Toxicology, School of Public Health, Shandong University, China
| | - Zhen-Ping Zhu
- Institute of Toxicology, School of Public Health, Shandong University, China
| | - Ke-Qin Xie
- Institute of Toxicology, School of Public Health, Shandong University, China.
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Xiao Y, Han J, Wang Q, Mao Y, Wei M, Jia W, Wei L. A Novel Interacting Protein SERP1 Regulates the N‐Linked Glycosylation and Function of GLP‐1 Receptor in the Liver. J Cell Biochem 2017; 118:3616-3626. [DOI: 10.1002/jcb.26207] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 06/08/2017] [Indexed: 02/06/2023]
Affiliation(s)
- Yuanyuan Xiao
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Center for Diabetes, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes MellitusShanghai Key Clinical Center for Metabolic DiseaseShanghai 200233China
| | - Junfeng Han
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Center for Diabetes, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes MellitusShanghai Key Clinical Center for Metabolic DiseaseShanghai 200233China
| | - Qianqian Wang
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Center for Diabetes, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes MellitusShanghai Key Clinical Center for Metabolic DiseaseShanghai 200233China
| | - Yueqin Mao
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Center for Diabetes, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes MellitusShanghai Key Clinical Center for Metabolic DiseaseShanghai 200233China
| | - Meilin Wei
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Center for Diabetes, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes MellitusShanghai Key Clinical Center for Metabolic DiseaseShanghai 200233China
| | - Weiping Jia
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Center for Diabetes, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes MellitusShanghai Key Clinical Center for Metabolic DiseaseShanghai 200233China
| | - Li Wei
- Department of Endocrinology and Metabolism, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Clinical Center for Diabetes, Shanghai Diabetes Institute, Shanghai Key Laboratory of Diabetes MellitusShanghai Key Clinical Center for Metabolic DiseaseShanghai 200233China
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Abstract
Chronic inflammatory state in obesity causes dysregulation of the endocrine and paracrine actions of adipocyte-derived factors, which disrupt vascular homeostasis and contribute to endothelial vasodilator dysfunction and subsequent hypertension. While normal healthy perivascular adipose tissue (PVAT) ensures the dilation of blood vessels, obesity-associated PVAT leads to a change in profile of the released adipo-cytokines, resulting in a decreased vasorelaxing effect. Adipose tissue inflammation, nitric oxide (NO)-bioavailability, insulin resistance and oxidized low-density lipoprotein (oxLDL) are main participating factors in endothelial dysfunction of obesity. In this chapter, disruption of inter-endothelial junctions between endothelial cells, significant increase in the production of reactive oxygen species (ROS), inflammation mediators, which are originated from inflamed endothelial cells, the balance between NO synthesis and ROS , insulin signaling and NO production, and decrease in L-arginine/endogenous asymmetric dimethyl-L-arginine (ADMA) ratio are discussed in connection with endothelial dysfunction in obesity.
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Affiliation(s)
- Atilla Engin
- Faculty of Medicine, Department of General Surgery, Gazi University, Besevler, Ankara, Turkey.
- , Mustafa Kemal Mah. 2137. Sok. 8/14, 06520, Cankaya, Ankara, Turkey.
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Abstract
The decrease in adiponectin levels are negatively correlated with chronic subclinical inflammation markers in obesity. The hypertrophic adipocytes cause obesity-linked insulin resistance and metabolic syndrome. Furthermore, macrophage polarization is a key determinant regulating adiponectin receptor (AdipoR1/R2) expression and differential adiponectin-mediated macrophage inflammatory responses in obese individuals. In addition to decrease in adiponectin concentrations, the decline in AdipoR1/R2 mRNA expression leads to a decrement in adiponectin binding to cell membrane, and this turns into attenuation in the adiponectin effects. Within the receptor complex, adaptor protein-containing pleckstrin homology domain, phosphotyrosine-binding domain, and leucine zipper motif 1 (APPL1) is the intracellular binding partner of AdipoR1 and AdipoR2. The expression levels of APPL1 or APPL2 lead to an altered adiponectin activity. Despite normal or high adiponectin levels, an impaired post receptor signaling due to APPL1/APPL2 may alter adiponectin efficiency and activity. However, APPL2 blocks adiponectin signaling through AdipoR1 and AdipoR2 by competitive inhibition of APPL1. APPL1 is also an important mediator of adiponectin dependent insulin sensitization. In this context, adiponectin resistance is associated with insulin resistance and is thought to be partly due to the down-regulation of the AdipoRs in high-fat diet fed subjects. Actually, adiponectin resistance occurs very rapidly after saturated fatty acid feeding, this metabolic disturbance is not due to a decrease in AdipoR1 protein content. Intra-abdominal adipose tissue-AdipoR2 expression is reduced in obesity, whereas AdipoR1 expression is not changed. Adiponectin resistance together with insulin resistance forms a vicious cycle. The elevated adiponectin levels with adiponectin resistance is a compensatory response in the condition of an unusual discordance between insulin resistance and adiponectin unresponsiveness.Additionally, different mechanisms are involved in vascular adiponectin resistance at different stages of obesity. Nevertheless, diet-induced hyperlipidemia is the leading cause of vascular adiponectin resistance. Leptin/adiponectin imbalance may also be an important marker of the elevated risk of developing abdominal obesity-associated cardiovascular diseases.
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Affiliation(s)
- Atilla Engin
- Faculty of Medicine, Department of General Surgery, Gazi University, Besevler, Ankara, Turkey.
- , Mustafa Kemal Mah. 2137. Sok. 8/14, 06520, Cankaya, Ankara, Turkey.
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Abd Alla J, Graemer M, Fu X, Quitterer U. Inhibition of G-protein-coupled Receptor Kinase 2 Prevents the Dysfunctional Cardiac Substrate Metabolism in Fatty Acid Synthase Transgenic Mice. J Biol Chem 2015; 291:2583-600. [PMID: 26670611 DOI: 10.1074/jbc.m115.702688] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Indexed: 12/12/2022] Open
Abstract
Impairment of myocardial fatty acid substrate metabolism is characteristic of late-stage heart failure and has limited treatment options. Here, we investigated whether inhibition of G-protein-coupled receptor kinase 2 (GRK2) could counteract the disturbed substrate metabolism of late-stage heart failure. The heart failure-like substrate metabolism was reproduced in a novel transgenic model of myocardium-specific expression of fatty acid synthase (FASN), the major palmitate-synthesizing enzyme. The increased fatty acid utilization of FASN transgenic neonatal cardiomyocytes rapidly switched to a heart failure phenotype in an adult-like lipogenic milieu. Similarly, adult FASN transgenic mice developed signs of heart failure. The development of disturbed substrate utilization of FASN transgenic cardiomyocytes and signs of heart failure were retarded by the transgenic expression of GRKInh, a peptide inhibitor of GRK2. Cardioprotective GRK2 inhibition required an intact ERK axis, which blunted the induction of cardiotoxic transcripts, in part by enhanced serine 273 phosphorylation of Pparg (peroxisome proliferator-activated receptor γ). Conversely, the dual-specific GRK2 and ERK cascade inhibitor, RKIP (Raf kinase inhibitor protein), triggered dysfunctional cardiomyocyte energetics and the expression of heart failure-promoting Pparg-regulated genes. Thus, GRK2 inhibition is a novel approach that targets the dysfunctional substrate metabolism of the failing heart.
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Affiliation(s)
- Joshua Abd Alla
- From the Department of Chemistry and Applied Biosciences, Molecular Pharmacology Unit, Swiss Federal Institute of Technology (ETH) Zurich, 8057 Zurich
| | - Muriel Graemer
- From the Department of Chemistry and Applied Biosciences, Molecular Pharmacology Unit, Swiss Federal Institute of Technology (ETH) Zurich, 8057 Zurich
| | - Xuebin Fu
- From the Department of Chemistry and Applied Biosciences, Molecular Pharmacology Unit, Swiss Federal Institute of Technology (ETH) Zurich, 8057 Zurich, the Department of Clinical Research, University of Bern, 3010 Bern, and
| | - Ursula Quitterer
- From the Department of Chemistry and Applied Biosciences, Molecular Pharmacology Unit, Swiss Federal Institute of Technology (ETH) Zurich, 8057 Zurich, the Department of Medicine, Institute of Pharmacology and Toxicology, University of Zurich, 8057 Zurich, Switzerland
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High-fat diet induces cardiomyocyte apoptosis via the inhibition of autophagy. Eur J Nutr 2015; 55:2245-54. [DOI: 10.1007/s00394-015-1034-7] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Accepted: 09/01/2015] [Indexed: 10/23/2022]
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Song J, Kang SM, Kim E, Kim CH, Song HT, Lee JE. Adiponectin receptor-mediated signaling ameliorates cerebral cell damage and regulates the neurogenesis of neural stem cells at high glucose concentrations: an in vivo and in vitro study. Cell Death Dis 2015; 6:e1844. [PMID: 26247729 PMCID: PMC4558511 DOI: 10.1038/cddis.2015.220] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 07/03/2015] [Accepted: 07/06/2015] [Indexed: 01/06/2023]
Abstract
In the central nervous system (CNS), hyperglycemia leads to neuronal damage and cognitive decline. Recent research has focused on revealing alterations in the brain in hyperglycemia and finding therapeutic solutions for alleviating the hyperglycemia-induced cognitive dysfunction. Adiponectin is a protein hormone with a major regulatory role in diabetes and obesity; however, its role in the CNS has not been studied yet. Although the presence of adiponectin receptors has been reported in the CNS, adiponectin receptor-mediated signaling in the CNS has not been investigated. In the present study, we investigated adiponectin receptor (AdipoR)-mediated signaling in vivo using a high-fat diet and in vitro using neural stem cells (NSCs). We showed that AdipoR1 protects cell damage and synaptic dysfunction in the mouse brain in hyperglycemia. At high glucose concentrations in vitro, AdipoR1 regulated the survival of NSCs through the p53/p21 pathway and the proliferation- and differentiation-related factors of NSCs via tailless (TLX). Hence, we suggest that further investigations are necessary to understand the cerebral AdipoR1-mediated signaling in hyperglycemic conditions, because the modulation of AdipoR1 might alleviate hyperglycemia-induced neuropathogenesis.
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Affiliation(s)
- J Song
- Department of Anatomy, Yonsei University College of Medicine, Seoul 120-752, South Korea
| | - S M Kang
- 1] Department of Anatomy, Yonsei University College of Medicine, Seoul 120-752, South Korea [2] BK21 Plus Project for Medical Sciences and Brain Research Institute, Yonsei University College of Medicine, Seoul 120-752, South Korea
| | - E Kim
- Department of Psychiatry, Yonsei University College of Medicine, Seoul 120-752, South Korea
| | - C-H Kim
- Department of Pharmacology, Yonsei University College of Medicine, Seoul 120-752, South Korea
| | - H-T Song
- Department of Diagnostic Radiology, Yonsei University College of Medicine, Seoul 120-752, South Korea
| | - J E Lee
- 1] Department of Anatomy, Yonsei University College of Medicine, Seoul 120-752, South Korea [2] BK21 Plus Project for Medical Sciences and Brain Research Institute, Yonsei University College of Medicine, Seoul 120-752, South Korea
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Fang F, Bae EH, Hu A, Liu GC, Zhou X, Williams V, Maksimowski N, Lu C, Konvalinka A, John R, Scholey JW. Deletion of the gene for adiponectin accelerates diabetic nephropathy in the Ins2 (+/C96Y) mouse. Diabetologia 2015; 58:1668-78. [PMID: 25957229 DOI: 10.1007/s00125-015-3605-9] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Accepted: 04/10/2015] [Indexed: 12/15/2022]
Abstract
AIMS/HYPOTHESIS Diabetic nephropathy is one of the most common forms of chronic kidney disease. The role of adiponectin in the development of diabetic nephropathy has not been elucidated, and the aim of the present study was to investigate the hypothesis that deletion of the gene for adiponectin would accelerate diabetic nephropathy in the Akita mouse. METHODS We followed four groups of mice from 4 weeks to 16 weeks of age (n ≥ 10 in each group): wild-type (WT) (Ins2 (+/+) Adipoq(+/+)) mice; APN(-/-) (Ins2(+/+) Adipoq(-/-)) mice; Akita (Ins2(+/C96Y) Adipoq(+/+)) mice and Akita/APN(-/-) (Ins2(+/C96Y) Adipoq(-/-)) mice. The mice were then killed and diabetic kidney injury was assessed. In vitro experiments were performed in primary mesangial cells. RESULTS Mice from both diabetic groups exhibited increased glomerular adiponectin receptor 1 (adipoR1) expression, kidney hypertrophy, glomerular enlargement, increased albuminuria and tissue oxidative stress compared with the WT control. Deletion of the adiponectin gene had no effect on glycaemia. However, Akita/APN(-/-) mice exhibited a greater extent of renal hypertrophy. In vitro, adiponectin attenuated high-glucose-induced phosphorylation of mammalian target of rapamycin (mTOR) and ribosomal protein S6 kinase (S6K). A higher level of fibrosis was observed in the tubulointerstitial and glomerular compartments of the Akita/APN(-/-) mice and adiponectin was found to inhibit TGFβ-induced Smad2 and Smad3 phosphorylation in vitro. There was an exaggerated inflammatory response in the Akita/APN(-/-) mice. Adiponectin also inhibited high-glucose-induced activation of nuclear factor κB (NFκB) in mesangial cells. CONCLUSIONS/INTERPRETATION Our data suggest that adiponectin is an important determinant of the kidney response to high glucose in vivo and in vitro.
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Affiliation(s)
- Fei Fang
- Institute of Medical Science, Faculty of Medicine, University of Toronto, 1 King's College Circle, Toronto, ON, M5S 1A8, Canada,
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