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Mariani S, Di Giorgio MR, Rossi E, Tozzi R, Contini S, Bauleo L, Cipriani F, Toscano R, Basciani S, Barbaro G, Watanabe M, Valenti A, Cotugno A, Ancona C, Lubrano C, Gnessi L. Blood SIRT1 Shows a Coherent Association with Leptin and Adiponectin in Relation to the Degree and Distribution of Adiposity: A Study in Obesity, Normal Weight and Anorexia Nervosa. Nutrients 2020; 12:nu12113506. [PMID: 33202604 PMCID: PMC7696683 DOI: 10.3390/nu12113506] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 11/09/2020] [Accepted: 11/11/2020] [Indexed: 12/12/2022] Open
Abstract
Sirtuin 1 (SIRT1) is a sensor of cell energy availability, and with leptin and adiponectin, it regulates metabolic homeostasis. Widely studied in tissues, SIRT1 is under evaluation as a plasmatic marker. We aimed at assessing whether circulating SIRT1 behaves consistently with leptin and adiponectin in conditions of deficiency, excess or normal fat content. Eighty subjects were evaluated: 27 with anorexia nervosa (AN), 26 normal-weight and 27 with obesity. Bloodstream SIRT1, leptin and adiponectin (ELISA), total and trunk fat mass (FM) %, abdominal visceral adipose tissue, liver steatosis and epicardial fat thickness (EFT) were assessed. For each fat store, the coefficient of determination (R2) was used to evaluate the prediction capability of SIRT1, leptin and adiponectin. Plasma SIRT1 and adiponectin coherently decreased with the increase of FM, while the opposite occurred with leptin. Mean levels of each analyte were different between groups (p < 0.005). A significant association between plasma variables and FM depots was observed. SIRT1 showed a good predictive strength for FM, particularly in the obesity group, where the best R2 was recorded for EFT (R2 = 0.7). Blood SIRT1, adiponectin and leptin behave coherently with FM and there is synchrony between them. The association of SIRT1 with FM is substantially superimposable to that of adiponectin and leptin. Given its homeostatic roles, SIRT1 may deserve to be considered as a plasma clinical/biochemical parameter of adiposity and metabolic health.
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Affiliation(s)
- Stefania Mariani
- Department of Experimental Medicine, Section of Medical Physiopathology, Food Science and Endocrinology, “Sapienza” University of Rome, Rome, Italy; (M.R.D.G.); (E.R.); (S.C.); (F.C.); (R.T.); (S.B.); (G.B.); (M.W.); (C.L.); (L.G.)
- Correspondence: ; Tel.: +39-06-499-70509
| | - Maria Rosaria Di Giorgio
- Department of Experimental Medicine, Section of Medical Physiopathology, Food Science and Endocrinology, “Sapienza” University of Rome, Rome, Italy; (M.R.D.G.); (E.R.); (S.C.); (F.C.); (R.T.); (S.B.); (G.B.); (M.W.); (C.L.); (L.G.)
| | - Erica Rossi
- Department of Experimental Medicine, Section of Medical Physiopathology, Food Science and Endocrinology, “Sapienza” University of Rome, Rome, Italy; (M.R.D.G.); (E.R.); (S.C.); (F.C.); (R.T.); (S.B.); (G.B.); (M.W.); (C.L.); (L.G.)
| | - Rossella Tozzi
- Department of Molecular Medicine, “Sapienza” University of Rome, 00161 Rome, Italy;
| | - Savina Contini
- Department of Experimental Medicine, Section of Medical Physiopathology, Food Science and Endocrinology, “Sapienza” University of Rome, Rome, Italy; (M.R.D.G.); (E.R.); (S.C.); (F.C.); (R.T.); (S.B.); (G.B.); (M.W.); (C.L.); (L.G.)
| | - Lisa Bauleo
- Department of Epidemiology, Lazio Regional Health Service, 00147 Rome, Italy; (L.B.); (C.A.)
| | - Fiammetta Cipriani
- Department of Experimental Medicine, Section of Medical Physiopathology, Food Science and Endocrinology, “Sapienza” University of Rome, Rome, Italy; (M.R.D.G.); (E.R.); (S.C.); (F.C.); (R.T.); (S.B.); (G.B.); (M.W.); (C.L.); (L.G.)
| | - Raffaella Toscano
- Department of Experimental Medicine, Section of Medical Physiopathology, Food Science and Endocrinology, “Sapienza” University of Rome, Rome, Italy; (M.R.D.G.); (E.R.); (S.C.); (F.C.); (R.T.); (S.B.); (G.B.); (M.W.); (C.L.); (L.G.)
| | - Sabrina Basciani
- Department of Experimental Medicine, Section of Medical Physiopathology, Food Science and Endocrinology, “Sapienza” University of Rome, Rome, Italy; (M.R.D.G.); (E.R.); (S.C.); (F.C.); (R.T.); (S.B.); (G.B.); (M.W.); (C.L.); (L.G.)
| | - Giuseppe Barbaro
- Department of Experimental Medicine, Section of Medical Physiopathology, Food Science and Endocrinology, “Sapienza” University of Rome, Rome, Italy; (M.R.D.G.); (E.R.); (S.C.); (F.C.); (R.T.); (S.B.); (G.B.); (M.W.); (C.L.); (L.G.)
| | - Mikiko Watanabe
- Department of Experimental Medicine, Section of Medical Physiopathology, Food Science and Endocrinology, “Sapienza” University of Rome, Rome, Italy; (M.R.D.G.); (E.R.); (S.C.); (F.C.); (R.T.); (S.B.); (G.B.); (M.W.); (C.L.); (L.G.)
| | - Agostino Valenti
- Internal Medicine, Santo Spirito in Sassia Hospital, 00193 Rome, Italy;
| | - Armando Cotugno
- Department of Mental Health, UOSD eating behavior disorders, Padiglione I, Comprensorio S. Maria della Pietà, 00135 Rome, Italy;
| | - Carla Ancona
- Department of Epidemiology, Lazio Regional Health Service, 00147 Rome, Italy; (L.B.); (C.A.)
| | - Carla Lubrano
- Department of Experimental Medicine, Section of Medical Physiopathology, Food Science and Endocrinology, “Sapienza” University of Rome, Rome, Italy; (M.R.D.G.); (E.R.); (S.C.); (F.C.); (R.T.); (S.B.); (G.B.); (M.W.); (C.L.); (L.G.)
| | - Lucio Gnessi
- Department of Experimental Medicine, Section of Medical Physiopathology, Food Science and Endocrinology, “Sapienza” University of Rome, Rome, Italy; (M.R.D.G.); (E.R.); (S.C.); (F.C.); (R.T.); (S.B.); (G.B.); (M.W.); (C.L.); (L.G.)
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Sergi D, Williams LM. Potential relationship between dietary long-chain saturated fatty acids and hypothalamic dysfunction in obesity. Nutr Rev 2020; 78:261-277. [PMID: 31532491 DOI: 10.1093/nutrit/nuz056] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Diet-induced hypothalamic inflammation, which leads to hypothalamic dysfunction and a loss of regulation of energy balance, is emerging as a potential driver of obesity. Excessive intake of long-chain saturated fatty acids is held to be the causative dietary component in hypothalamic inflammation. This review summarizes current evidence on the role of long-chain saturated fatty acids in promoting hypothalamic inflammation and the related induction of central insulin and leptin insensitivity. Particularly, the present review focuses on the molecular mechanisms linking long-chain saturated fatty acids and hypothalamic inflammation, emphasizing the metabolic fate of fatty acids and the resulting lipotoxicity, which is a key driver of hypothalamic dysfunction. In conclusion, long-chain saturated fatty acids are key nutrients that promote hypothalamic inflammation and dysfunction by fostering the build-up of lipotoxic lipid species, such as ceramide. Furthermore, when long-chain saturated fatty acids are consumed in combination with high levels of refined carbohydrates, the proinflammatory effects are exacerbated via a mechanism that relies on the formation of advanced glycation end products.
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Affiliation(s)
- Domenico Sergi
- Nutrition and Health Substantiation Group, Nutrition and Health Program, Health and Biosecurity, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Adelaide, South Australia, Australia
| | - Lynda M Williams
- Rowett Institute, University of Aberdeen, Foresterhill, Aberdeen, United Kingdom
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Apryatin SA, Shipelin VA, Trusov NV, Mzhel’skaya KV, Kirbaeva NV, Soto JS, Riger NA, Gmoshinski IV. The Effect of Quercetin on Metabolism and Behavioral Responses in Mice with Normal and Impaired Leptin Reception. BIOL BULL+ 2020. [DOI: 10.1134/s1062359020040020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Rashidian H, Rosenblat JD, McIntyre RS, Mansur RB. Leptin, obesity, and response to ketamine. Prog Neuropsychopharmacol Biol Psychiatry 2020; 98:109773. [PMID: 31672525 DOI: 10.1016/j.pnpbp.2019.109773] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Revised: 08/06/2019] [Accepted: 10/02/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Houman Rashidian
- Mood Disorders Psychopharmacology Unit (MDPU), University Health Network, University of Toronto, Toronto, Ontario, Canada.
| | - Joshua D Rosenblat
- Mood Disorders Psychopharmacology Unit (MDPU), University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Roger S McIntyre
- Mood Disorders Psychopharmacology Unit (MDPU), University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Rodrigo B Mansur
- Mood Disorders Psychopharmacology Unit (MDPU), University Health Network, University of Toronto, Toronto, Ontario, Canada
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Hosoi T, Kuwamura A, Thon M, Tsuchio K, Abd El-Hafeez AA, Ozawa K. Possible involvement of 4-hydroxy-2-nonenal in the pathogenesis of leptin resistance in obesity. Am J Physiol Cell Physiol 2019; 316:C641-C648. [DOI: 10.1152/ajpcell.00080.2018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Insensitivity to the antiobesity hormone, leptin, has been suggested to be involved in the pathogenesis of obesity. However, the pathological mechanisms underlying the development of leptin resistance are not well-understood. This study aimed to examine the pathological mechanisms of leptin resistance in obesity. In the present study, we found that 4-hydroxy-2-nonenal (4-HNE), an aldehyde, may be involved in the development of leptin resistance. The SH-SY5Y-Ob-Rb human neuroblastoma cell line, transfected to express the Ob-Rb leptin receptor stably, was treated with 4-HNE, and leptin-induced signal transduction was analyzed. We found that 4-HNE dose- and time-dependently inhibited leptin-induced signal transducer and activator of transcription 3 (STAT3) phosphorylation, a major antiobesity signal of leptin. On the other hand, 4-HNE did not affect tyrosine phosphorylation of broad cellular proteins, suggesting that the inhibitory effect may be selective to leptin signaling. Mechanistically, 4-HNE induced the eukaryotic initiation factor 2α-CCAAT/enhancer-binding protein homologous protein arm of endoplasmic reticulum stress signaling, which may be involved in the pathogenesis of leptin resistance. Overall, these results suggest that 4-HNE may partly affect endoplasmic reticulum stress-induced unfolded protein response signaling and may be involved in the pathogenesis of leptin resistance.
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Affiliation(s)
- Toru Hosoi
- Department of Pharmacotherapy, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Ayaka Kuwamura
- Department of Pharmacotherapy, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Mina Thon
- Department of Pharmacotherapy, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kyoji Tsuchio
- Department of Pharmacotherapy, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Amer Ali Abd El-Hafeez
- Department of Pharmacotherapy, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
- Global Career Design Center, Hiroshima University, Hiroshima, Japan
- Pharmacology and Experimental Oncology Unit, Cancer Biology Department, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Koichiro Ozawa
- Department of Pharmacotherapy, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
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Depletion of regulator-of-G-protein signaling-10 in mice exaggerates high-fat diet-induced insulin resistance and inflammation, and this effect is mitigated by dietary green tea extract. Nutr Res 2018; 70:50-59. [PMID: 30032988 DOI: 10.1016/j.nutres.2018.06.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 06/11/2018] [Accepted: 06/24/2018] [Indexed: 12/25/2022]
Abstract
The interaction between insulin resistance and inflammation plays a central role in the development of chronic diseases, although the mechanism is not fully understood. We previously demonstrated that regulator of G-protein signaling-10 (RGS10) protein is a negative modulator of the inflammatory response in macrophages and microglia. Because inflammation is a critical component in the development of high fat diet-induced insulin resistance, in this study we investigated whether RGS10 is involved in the diet-dependent regulation of glucose tolerance and insulin sensitivity. We hypothesized that the absence of RGS10 would exaggerate high-fat diet (HFD)-induced insulin resistance and inflammation response. Our results showed that RGS10 knockout (KO) mice fed a HFD gained significantly more weight and developed severe insulin resistance compared to wild-type (WT) mice fed HFD. Furthermore, compared to WT HFD-fed mice, KO mice fed the HFD displayed inflammatory phenotypes such as decreased adipose tissue expression of the anti-inflammatory M2 markers YM1 and Fizz1 and increased expression of the proinflammatory M1 cytokine interleukin 6 in adipose and CD11b, CD68 and interleukin 1β in liver tissues. The impact of RGS10 deficiency on the exaggeration of HFD-induced insulin resistance and inflammation was ameliorated by oral consumption of green tea extract. Our results demonstrate that RGS10 is an important part of a protective mechanism involved in in regulating metabolic homeostasis by reducing inflammatory responses, which could potentially lead to an innovative new approach targeting inflammation and insulin resistance.
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