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Tanioka T, Iwamoto S, Nakano Y. Suppression of Lipopolysaccharide-Induced IL-1β Gene Expression by High-Molecular-Weight Adiponectin in RAW264.7 Macrophages. Biol Pharm Bull 2023; 46:1498-1505. [PMID: 37914352 DOI: 10.1248/bpb.b23-00213] [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] [Indexed: 11/03/2023]
Abstract
Adiponectin is an abundant adipocytokine secreted by adipocytes. It exists in the plasma in its trimeric, hexameric, high-molecular-weight (HMW), and globular (a proteolytic product) isoforms. Adiponectin's anti-inflammatory effects on macrophages remain controversial. We have previously reported a simple and effective method for purifying native HMW adiponectin from human plasma. Here, we investigated whether native HMW adiponectin from human plasma has anti-inflammatory effects on macrophages. Pretreatment with human native HMW adiponectin inhibited lipopolysaccharide (LPS)-induced interleukin-1β (IL-1β) gene expression, but not tumor necrosis factor (TNF)-α expression. However, simultaneous treatment with HMW adiponectin and LPS did not inhibit IL-1β expression. Further, HMW adiponectin pretreatment decreases glycogen synthase kinase-3β (GSK-3β) inactivation by abrogating LPS-induced Akt (Ser473) phosphorylation, which subsequently suppresses LPS-induced CCAAT/enhancer binding protein β (C/EBPβ) protein translation and nuclear translocation. However, HMW adiponectin pretreatment did not affect LPS-induced nuclear factor-kappaB (NF-κB) activation. These results suggest that HMW adiponectin mediates potent anti-inflammatory activities in macrophages by inhibiting its Akt-C/EBPβ signaling pathway, thereby suppressing IL-1β gene expression.
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Affiliation(s)
- Toshihiro Tanioka
- Division of Physiology and Pathology, Department of Pharmacology, Toxicology, and Therapeutics, School of Pharmacy, Showa University
- Division of Pharmacogenomics, Department of Pharmacotherapeutics, School of Pharmacy, Showa University
| | - Sanju Iwamoto
- Division of Physiology and Pathology, Department of Pharmacology, Toxicology, and Therapeutics, School of Pharmacy, Showa University
| | - Yasuko Nakano
- Division of Pharmacogenomics, Department of Pharmacotherapeutics, School of Pharmacy, Showa University
- Department of Clinical Medicine, Laboratory of Pharmacotherapeutics, Yokohama University of Pharmacy
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Weiss M, Bouchoucha S, Aiad F, Ayme-Dietrich E, Dali-Youcef N, Bousquet P, Greney H, Niederhoffer N. Imidazoline-like drugs improve insulin sensitivity through peripheral stimulation of adiponectin and AMPK pathways in a rat model of glucose intolerance. Am J Physiol Endocrinol Metab 2015; 309:E95-104. [PMID: 26015433 DOI: 10.1152/ajpendo.00021.2015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 05/20/2015] [Indexed: 01/04/2023]
Abstract
Altered adiponectin signaling and chronic sympathetic hyperactivity have both been proposed as key factors in the pathogenesis of metabolic syndrome. We recently reported that activation of I1 imidazoline receptors (I1R) improves several symptoms of the metabolic syndrome through sympathoinhibition and increases adiponectin plasma levels in a rat model of metabolic syndrome (Fellmann L, Regnault V, Greney H, et al. J Pharmacol Exp Ther 346: 370-380, 2013). The present study was designed to explore the peripheral component of the beneficial actions of I1R ligands (i.e., sympathoinhibitory independent effects). Aged rats displaying insulin resistance and glucose intolerance were treated with LNP509, a peripherally acting I1R agonist. Glucose tolerance, insulin sensitivity, and adiponectin signaling were assessed at the end of the treatment. Direct actions of the ligand on hepatocyte and adipocyte signaling were also studied. LNP509 reduced the area under the curve of the intravenous glucose tolerance test and enhanced insulin hypoglycemic action and intracellular signaling (Akt phosphorylation), indicating improved glucose tolerance and insulin sensitivity. LNP509 stimulated adiponectin secretion acting at I1R on adipocytes, resulting in increased plasma levels of adiponectin; it also enhanced AMPK phosphorylation in hepatic tissues. Additionally, I1R activation on hepatocytes directly enhanced AMPK phosphorylation. To conclude, I1R ligands can improve insulin sensitivity acting peripherally, independently of sympathoinhibition; stimulation of adiponectin and AMPK pathways at insulin target tissues may account for this effect. This may open a promising new way for the treatment of the metabolic syndrome.
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Affiliation(s)
- Maud Weiss
- Laboratoire de Neurobiologie et Pharmacologie Cardiovasculaire, Fédération de Médecine Translationnelle de Strasbourg, Faculté de Médecine, Université de Strasbourg, France
| | - Soumaya Bouchoucha
- Laboratoire de Neurobiologie et Pharmacologie Cardiovasculaire, Fédération de Médecine Translationnelle de Strasbourg, Faculté de Médecine, Université de Strasbourg, France
| | - Farouk Aiad
- Laboratoire de Neurobiologie et Pharmacologie Cardiovasculaire, Fédération de Médecine Translationnelle de Strasbourg, Faculté de Médecine, Université de Strasbourg, France
| | - Estelle Ayme-Dietrich
- Laboratoire de Neurobiologie et Pharmacologie Cardiovasculaire, Fédération de Médecine Translationnelle de Strasbourg, Faculté de Médecine, Université de Strasbourg, France
| | - Nassim Dali-Youcef
- Laboratoire de Biochimie Générale et Spécialisée, Hôpitaux Universitaires, Strasbourg, France; and Institut de Génétique et Biologie Moléculaire et Cellulaire, CNRS UMR 7104/INSERM U964, Université de Strasbourg, Illkirch, France
| | - Pascal Bousquet
- Laboratoire de Neurobiologie et Pharmacologie Cardiovasculaire, Fédération de Médecine Translationnelle de Strasbourg, Faculté de Médecine, Université de Strasbourg, France
| | - Hugues Greney
- Laboratoire de Neurobiologie et Pharmacologie Cardiovasculaire, Fédération de Médecine Translationnelle de Strasbourg, Faculté de Médecine, Université de Strasbourg, France
| | - Nathalie Niederhoffer
- Laboratoire de Neurobiologie et Pharmacologie Cardiovasculaire, Fédération de Médecine Translationnelle de Strasbourg, Faculté de Médecine, Université de Strasbourg, France;
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Gokulakrishnan K, Aravindhan V, Amutha A, Abhijit S, Ranjani H, Anjana RM, Unnikrishnan R, Miranda P, Narayan KV, Mohan V. Serum adiponectin helps to differentiate type 1 and type 2 diabetes among young Asian Indians. Diabetes Technol Ther 2013; 15:696-702. [PMID: 23902401 PMCID: PMC3746282 DOI: 10.1089/dia.2012.0306] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVE This study assessed whether serum adiponectin could be used as a biochemical marker to differentiate type 1 diabetes mellitus (T1DM) from type 2 diabetes mellitus (T2DM) among young Asian Indians. RESEARCH DESIGN AND METHODS We recruited age- and sex-matched individuals with physician-diagnosed T1DM (n=70) and T2DM (n=72). All were 12-27 years of age with a duration of diabetes of >2 years, at a large tertiary-care diabetes center in Chennai, southern India. Age- and sex-matched individuals with normal glucose tolerance (NGT) (n=68) were selected from an ongoing population study. NGT was defined using World Health Organization criteria. Serum total adiponectin was measured by enzyme-linked immunosorbent assay. Receiver operating characteristic (ROC) curves were used to identify adiponectin cut points for discriminating T1DM from T2DM. RESULTS Adiponectin levels were higher in T1DM and lower in T2DM compared with the NGT group (9.89, 3.88, and 6.84 μg/mL, respectively; P<0.001). In standardized polytomous regression models, adiponectin was associated with T1DM (odds ratio [OR]=1.131 per SD; 95% confidence interval [CI], 1.025-1.249) and T2DM (OR=0.628 per SD; 95% CI, 0.504-0.721) controlled for age, gender, waist circumference, body mass index, hypertension, glycated hemoglobin, total cholesterol, serum triglycerides, high-density lipoprotein cholesterol, low-density lipoprotein cholesterol, family history of T2DM, and estimated glomerular filtration rate. Using ROC analysis, an adiponectin cut point of 5.1 μg/mL had a C statistic of 0.886 (95% CI, 0.836-0.953), sensitivity of 80.6%, and specificity of 80.6% to differentiate T1DM from T2DM. Using the 5.1 μg/mL cut point, 80.6% of T1DM and 81.8% of T2DM would be correctly classified. CONCLUSIONS Serum adiponectin is a useful biochemical marker for differentiating T1DM and T2DM among young Asian Indians.
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Affiliation(s)
- Kuppan Gokulakrishnan
- Madras Diabetes Research Foundation and Dr. Mohan's Diabetes Specialities Centre, WHO Collaborating Centre for Non-Communicable Diseases Prevention and Control, IDF Centre for Education, Gopalapuram, Chennai, India
| | - Vivekanandhan Aravindhan
- Laboratory of Molecular Immunology, Anna University-K.B. Chandrashekar Research Centre, Chennai, India
| | - Anandakumar Amutha
- Madras Diabetes Research Foundation and Dr. Mohan's Diabetes Specialities Centre, WHO Collaborating Centre for Non-Communicable Diseases Prevention and Control, IDF Centre for Education, Gopalapuram, Chennai, India
| | - Shiny Abhijit
- Madras Diabetes Research Foundation and Dr. Mohan's Diabetes Specialities Centre, WHO Collaborating Centre for Non-Communicable Diseases Prevention and Control, IDF Centre for Education, Gopalapuram, Chennai, India
| | - Harish Ranjani
- Madras Diabetes Research Foundation and Dr. Mohan's Diabetes Specialities Centre, WHO Collaborating Centre for Non-Communicable Diseases Prevention and Control, IDF Centre for Education, Gopalapuram, Chennai, India
| | - Ranjit Mohan Anjana
- Madras Diabetes Research Foundation and Dr. Mohan's Diabetes Specialities Centre, WHO Collaborating Centre for Non-Communicable Diseases Prevention and Control, IDF Centre for Education, Gopalapuram, Chennai, India
| | - Ranjith Unnikrishnan
- Madras Diabetes Research Foundation and Dr. Mohan's Diabetes Specialities Centre, WHO Collaborating Centre for Non-Communicable Diseases Prevention and Control, IDF Centre for Education, Gopalapuram, Chennai, India
| | - Priya Miranda
- Madras Diabetes Research Foundation and Dr. Mohan's Diabetes Specialities Centre, WHO Collaborating Centre for Non-Communicable Diseases Prevention and Control, IDF Centre for Education, Gopalapuram, Chennai, India
| | - K.M. Venkat Narayan
- Hubert Department of Global Health, Rollins School of Public Health, Emory University, Atlanta, Georgia
| | - Viswanathan Mohan
- Madras Diabetes Research Foundation and Dr. Mohan's Diabetes Specialities Centre, WHO Collaborating Centre for Non-Communicable Diseases Prevention and Control, IDF Centre for Education, Gopalapuram, Chennai, India
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Abstract
Telomere shortening is emerging as a biological indicator of accelerated aging and aging-related diseases including type 2 diabetes. While telomere length measurements were largely done in white blood cells, there is lack of studies on telomere length in relation to oxidative stress in target tissues affected in diabetes. Therefore, the aim of this study is to induct oxidative stress in adipocytes and to test whether these adipocytes exhibit shortened telomeres, senescence and functional impairment. 3T3-L1 adipocytes were subjected to oxidative stress and senescence induction by a variety of means for 2 weeks (exogenous application of H2O2, glucose oxidase, asymmetric dimethylarginine (ADMA) and glucose oscillations). Cells were probed for reactive oxygen species generation (ROS), DNA damage, mRNA and protein expression of senescent and pro-inflammatory markers, telomere length and glucose uptake. Compared to untreated cells, both ROS generation and DNA damage were significantly higher in cells subjected to oxidative stress and senescence. Adipocytes subjected to oxidative stress also showed shortened telomeres and increased mRNA and protein expression of p53, p21, TNF alpha and IL-6. Senescent cells were also characterized by decreased levels of adiponectin and impaired glucose uptake. Briefly, adipocytes under oxidative stress exhibited increased ROS generation, DNA damage, shortened telomeres and switched to senescent/pro-inflammatory phenotype with impaired glucose uptake.
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Nakatsuji H, Kishida K, Kobayashi H, Nakagawa T, Funahashi T, Shimomura I. Correlation of circulating C1q and C1q-binding adiponectin concentrations with aging in males: a preliminary report. Diabetol Metab Syndr 2013; 5:17. [PMID: 23531423 PMCID: PMC3620543 DOI: 10.1186/1758-5996-5-17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2013] [Accepted: 03/22/2013] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND Atherosclerosis is an age-related disease. Adiponectin and C1q form a protein complex in human blood, and that serum C1q and C1q-binding adiponectin (C1q-APN) concentrations can be measured. We investigated circulating C1q and C1q-APN levels in Japanese men including elderly men. FINDINGS The study subjects were 509 Japanese men including elderly men. Serum levels of total adiponectin (Total-APN), high-molecular weight-adiponectin (HMW-APN), C1q-APN and C1q were measured by enzyme-linked immunosorbent assay. Total-APN, HMW-APN and C1q-APN, but not C1q, correlated significantly and positively with aging (r=0.26, r=0.24, r=0.17, p<0.01, respectively). The HMW-APN/Total-APN ratio correlated significantly and positively with aging (r=0.14, p<0.01). The C1q-APN/Total-APN ratio and C1q-APN/HMW-APN ratio correlated significantly and negatively with aging (r=-0.17, p<0.01, r=-0.12, p=0.01). C1q-APN/C1q correlated significantly and positively with aging (r=0.09, p=0.03). Multiple regression analysis identified age and body mass index as significant determinants of C1q-APN. CONCLUSIONS The present study demonstrates that serum HMW-APN, C1q-APN, and Total-APN, but not C1q, correlated positively with aging. These preliminary results could form the basis for future research. CLINICAL TRIAL REGISTRATION NUMBER UMIN000004318.
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Affiliation(s)
- Hideaki Nakatsuji
- Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
| | - Ken Kishida
- Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
- Kishida Clinic, Osaka 560-0021, Japan
| | - Hironori Kobayashi
- Department of Research and Development, Diagnostic Division, Otsuka Pharmaceutical Co., Ltd, Tokushima 771-0195, Japan
| | - Tohru Nakagawa
- Hitachi, Ltd. Hitachi Health Care Center, Hitachi, Ibaraki, 317-0076, Japan
| | - Tohru Funahashi
- Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
- Department of Metabolism and Atherosclerosis, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
| | - Iichiro Shimomura
- Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan
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