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Tovar R, de Ceglia M, Rodríguez-Pozo M, Vargas A, Gavito A, Suárez J, Boronat A, de la Torre R, de Fonseca FR, Baixeras E, Decara J. Hydroxytyrosol Linoleoyl Ether Ameliorates Metabolic-Associated Fatty Liver Disease Symptoms in Obese Zucker Rats. ACS Pharmacol Transl Sci 2024; 7:1571-1583. [PMID: 38751648 PMCID: PMC11092116 DOI: 10.1021/acsptsci.4c00105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 03/26/2024] [Accepted: 03/28/2024] [Indexed: 05/18/2024]
Abstract
A main hepatic consequence of obesity is metabolic-associated fatty liver disease (MAFLD), currently treated by improving eating habits and administrating fibrates yet often yielding suboptimal outcomes. Searching for a new therapeutic approach, we aimed to evaluate the efficacy of hydroxytyrosol linoleoyl ether (HTLE), a dual Ppar-α agonist/Cb1 antagonist with inherent antioxidant properties, as an antisteatotic agent. Using lean and obese Zucker rats, they were administrated daily doses of HTLE (3 mg/kg) over a 15-day period, evaluating its safety profile, pharmacokinetics, impact on body weight, hepatic fat content, expression of key enzymes involved in lipogenesis/fatty acid oxidation, and antioxidant capacity. HTLE decreased the body weight and food intake in both rat genotypes. Biochemical analysis demonstrated a favorable safety profile for HTLE along with decreased concentrations of urea, total cholesterol, and aspartate aminotransferase AST transaminases in plasma. Notably, HTLE exhibited potent antisteatotic effects in obese rats, evidenced by a decrease in liver fat content and downregulation of lipogenesis-related enzymes, alongside increased expression of proteins controlling lipid oxidation. Moreover, HTLE successfully counteracted the redox imbalance associated with MAFLD in obese rats, attenuating lipid peroxidation and replenishing both glutathione levels and the overall antioxidant. Our findings highlight the effectiveness of triple-action strategies in managing MAFLD effectively. Based on our results in the Zucker rat model, HTLE emerges as a promising candidate with triple functionality as an anorexigenic, antisteatotic, and antioxidant agent, offering potential relief from MAFLD symptoms associated with obesity while exhibiting minimal side effects. In conclusion, our study positions HTLE as a highly promising compound for therapeutic intervention in MAFLD treatment, warranting further exploration in clinical trials.
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Affiliation(s)
- Rubén Tovar
- Instituto
de Investigación Biomédica de Málaga y Plataforma
en Nanomedicina-IBIMA Plataforma BIONAND, Hospital Universitario Regional de Málaga, UGC Salud Mental, Av. Carlos Haya 82, Málaga 29010, Spain
- Facultad
de Ciencias, Universidad de Málaga,
Campus Universitario de Teatinos s/n, Málaga 29010, Spain
| | - Marialuisa de Ceglia
- Instituto
de Investigación Biomédica de Málaga y Plataforma
en Nanomedicina-IBIMA Plataforma BIONAND, Hospital Universitario Regional de Málaga, UGC Salud Mental, Av. Carlos Haya 82, Málaga 29010, Spain
| | - Miguel Rodríguez-Pozo
- Instituto
de Investigación Biomédica de Málaga y Plataforma
en Nanomedicina-IBIMA Plataforma BIONAND, Hospital Universitario Regional de Málaga, UGC Salud Mental, Av. Carlos Haya 82, Málaga 29010, Spain
| | - Antonio Vargas
- Instituto
de Investigación Biomédica de Málaga y Plataforma
en Nanomedicina-IBIMA Plataforma BIONAND, Hospital Universitario Regional de Málaga, UGC Salud Mental, Av. Carlos Haya 82, Málaga 29010, Spain
| | - Ana Gavito
- Instituto
de Investigación Biomédica de Málaga y Plataforma
en Nanomedicina-IBIMA Plataforma BIONAND, Hospital Universitario Regional de Málaga, UGC Salud Mental, Av. Carlos Haya 82, Málaga 29010, Spain
| | - Juan Suárez
- Instituto
de Investigación Biomédica de Málaga y Plataforma
en Nanomedicina-IBIMA Plataforma BIONAND, Hospital Universitario Regional de Málaga, UGC Salud Mental, Av. Carlos Haya 82, Málaga 29010, Spain
- Departamento
de Anatomía Humana, Medicina Legal e Historia de la Ciencia,
Facultad de Medicina, Universidad de Málaga,
Campus Universitario de Teatinos s/n, Málaga 29010, Spain
| | - Anna Boronat
- Grupo
de Farmacología Integrada y Neurociencia de Sistemas, Programa
de investigación en Neurociencias, Instituto de Investigaciones Médicas Hospital del Mar (IMIM), C/del Dr. Aiguader 88, Barcelona 08003, Spain
| | - Rafael de la Torre
- Grupo
de Farmacología Integrada y Neurociencia de Sistemas, Programa
de investigación en Neurociencias, Instituto de Investigaciones Médicas Hospital del Mar (IMIM), C/del Dr. Aiguader 88, Barcelona 08003, Spain
| | - Fernando Rodríguez de Fonseca
- Instituto
de Investigación Biomédica de Málaga y Plataforma
en Nanomedicina-IBIMA Plataforma BIONAND, Hospital Universitario Regional de Málaga, UGC Salud Mental, Av. Carlos Haya 82, Málaga 29010, Spain
| | - Elena Baixeras
- Departamento
de Bioquímica y Biología Molecular, Facultad de Medicina, Universidad de Málaga, Campus Universitario
de Teatinos s/n, Málaga 29010, Spain
| | - Juan Decara
- Instituto
de Investigación Biomédica de Málaga y Plataforma
en Nanomedicina-IBIMA Plataforma BIONAND, Hospital Universitario Regional de Málaga, UGC Salud Mental, Av. Carlos Haya 82, Málaga 29010, Spain
- Departamento
de Anatomía Humana, Medicina Legal e Historia de la Ciencia,
Facultad de Medicina, Universidad de Málaga,
Campus Universitario de Teatinos s/n, Málaga 29010, Spain
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2
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Melini S, Lama A, Comella F, Opallo N, Del Piano F, Annunziata C, Mollica MP, Ferrante MC, Pirozzi C, Mattace Raso G, Meli R. Targeting liver and adipose tissue in obese mice: Effects of a N-acylethanolamine mixture on insulin resistance and adipocyte reprogramming. Biomed Pharmacother 2024; 174:116531. [PMID: 38574624 DOI: 10.1016/j.biopha.2024.116531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 03/28/2024] [Accepted: 03/29/2024] [Indexed: 04/06/2024] Open
Abstract
N-acylethanolamines (NAEs) are endogenous lipid-signalling molecules involved in inflammation and energy metabolism. The potential pharmacological effect of NAE association in managing inflammation-based metabolic disorders is unexplored. To date, targeting liver-adipose axis can be considered a therapeutic approach for the treatment of obesity and related dysfunctions. Here, we investigated the metabolic effect of OLALIAMID® (OLA), an olive oil-derived NAE mixture, in limiting liver and adipose tissue (AT) dysfunction of high-fat diet (HFD)-fed mice. OLA reduced body weight and fat mass in obese mice, decreasing insulin resistance (IR), as shown by homeostasis model assessment index, and leptin/adiponectin ratio, a marker of adipocyte dysfunction. OLA improved serum lipid and hepatic profile and the immune/inflammatory pattern of metainflammation. In liver of HFD mice, OLA treatment counteracted glucose and lipid dysmetabolism, restoring insulin signalling (phosphorylation of AKT and AMPK), and reducing mRNAs of key markers of fatty acid accumulation. Furthermore, OLA positively affected AT function deeply altered by HFD by reprogramming of genes involved in thermogenesis of interscapular brown AT (iBAT) and subcutaneous white AT (scWAT), and inducing the beigeing of scWAT. Notably, the NAE mixture reduced inflammation in iBAT and promoted M1-to-M2 macrophage shift in scWAT of obese mice. The tissue and systemic anti-inflammatory effects of OLA and the increased expression of glucose transporter 4 in scWAT contributed to the improvement of gluco-lipid toxicity and insulin sensitivity. In conclusion, we demonstrated that this olive oil-derived NAE mixture is a valid nutritional strategy to counteract IR and obesity acting on liver-AT crosstalk, restoring both hepatic and AT function and metabolism.
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Affiliation(s)
- S Melini
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Naples 80131, Italy
| | - A Lama
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Naples 80131, Italy
| | - F Comella
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Naples 80131, Italy
| | - N Opallo
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Naples 80131, Italy
| | - F Del Piano
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, Naples 80137, Italy
| | - C Annunziata
- Department of Bioscience and Nutrition Karolinska Institute Neo Building, Huddinge 14152, Sweden
| | - M P Mollica
- Department of Biology, University of Naples Federico II, Naples 80126, Italy
| | - M C Ferrante
- Department of Veterinary Medicine and Animal Productions, University of Naples Federico II, Naples 80137, Italy
| | - C Pirozzi
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Naples 80131, Italy.
| | - G Mattace Raso
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Naples 80131, Italy
| | - R Meli
- Department of Pharmacy, School of Medicine, University of Naples Federico II, Naples 80131, Italy
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3
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De Filippo C, Costa A, Becagli MV, Monroy MM, Provensi G, Passani MB. Gut microbiota and oleoylethanolamide in the regulation of intestinal homeostasis. Front Endocrinol (Lausanne) 2023; 14:1135157. [PMID: 37091842 PMCID: PMC10113643 DOI: 10.3389/fendo.2023.1135157] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 03/22/2023] [Indexed: 04/08/2023] Open
Abstract
A vast literature strongly suggests that the endocannabinoid (eCB) system and related bioactive lipids (the paracannabinoid system) contribute to numerous physiological processes and are involved in pathological conditions such as obesity, type 2 diabetes, and intestinal inflammation. The gut paracannabinoid system exerts a prominent role in gut physiology as it affects motility, permeability, and inflammatory responses. Another important player in the regulation of host metabolism is the intestinal microbiota, as microorganisms are indispensable to protect the intestine against exogenous pathogens and potentially harmful resident microorganisms. In turn, the composition of the microbiota is regulated by intestinal immune responses. The intestinal microbial community plays a fundamental role in the development of the innate immune system and is essential in shaping adaptive immunity. The active interplay between microbiota and paracannabinoids is beginning to appear as potent regulatory system of the gastrointestinal homeostasis. In this context, oleoylethanolamide (OEA), a key component of the physiological systems involved in the regulation of dietary fat consumption, energy homeostasis, intestinal motility, and a key factor in modulating eating behavior, is a less studied lipid mediator. In the small intestine namely duodenum and jejunum, levels of OEA change according to the nutrient status as they decrease during food deprivation and increase upon refeeding. Recently, we and others showed that OEA treatment in rodents protects against inflammatory events and changes the intestinal microbiota composition. In this review, we briefly define the role of OEA and of the gut microbiota in intestinal homeostasis and recapitulate recent findings suggesting an interplay between OEA and the intestinal microorganisms.
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Affiliation(s)
- Carlotta De Filippo
- Istituto di Biologia e Biotecnologia Agraria, Consiglio Nazionale delle Ricerche, Pisa, Italy
| | - Alessia Costa
- Dipartimento di Scienze della Salute, Università di Firenze, Firenze, Italy
| | | | - Mariela Mejia Monroy
- Istituto di Biologia e Biotecnologia Agraria, Consiglio Nazionale delle Ricerche, Pisa, Italy
| | - Gustavo Provensi
- Dipartimento di Neurofarba, Università di Firenze, Firenze, Italy
- *Correspondence: Maria Beatrice Passani, ; Gustavo Provensi,
| | - Maria Beatrice Passani
- Dipartimento di Scienze della Salute, Università di Firenze, Firenze, Italy
- *Correspondence: Maria Beatrice Passani, ; Gustavo Provensi,
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Aibara D, Takahashi S, Yagai T, Kim D, Brocker CN, Levi M, Matsusue K, Gonzalez FJ. Gene repression through epigenetic modulation by PPARA enhances hepatocellular proliferation. iScience 2022; 25:104196. [PMID: 35479397 PMCID: PMC9036120 DOI: 10.1016/j.isci.2022.104196] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 02/22/2022] [Accepted: 03/31/2022] [Indexed: 11/25/2022] Open
Abstract
Peroxisome proliferator-activated receptor α (PPARA) is a key mediator of lipid metabolism and inflammation. Activation of PPARA in rodents causes hepatocyte proliferation, but the underlying mechanism is poorly understood. This study focused on genes repressed by PPARA and analyzed the mechanism by which PPARA promotes hepatocyte proliferation in mice. Activation of PPARA by agonist treatment was autoregulated, and induced expression of the epigenetic regulator UHRF1 via activation of the newly described PPARA target gene E2f8, which, in turn, regulates Uhrf1. UHRF1 strongly repressed the expression of CDH1 via methylation of the Cdh1 promoter marked with H3K9me3. Repression of CDH1 by PPARA activation was reversed by PPARA deficiency or knockdown of E2F8 or UHRF1. Furthermore, a forced expression of CDH1 inhibited expression of the Wnt signaling target genes such as Myc after PPARA activation, and suppressed hepatocyte hyperproliferation. These results demonstrate that the PPARA-E2F8-UHRF1-CDH1 axis causes epigenetic regulation of hepatocyte proliferation. PPARA activation induces the UHRF1 expression via novel PPARA target gene E2f8 Induction of UHRF1 by PPARA activation represses Cdh1 gene marked with H3K9me3 CDH1 suppresses hepatocyte proliferation after PPARA activation Autoinduction of PPARA by agonist enhances cell proliferation via E2F8-UHRF1-CDH1
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Affiliation(s)
- Daisuke Aibara
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
- Faculty of Pharmaceutical Science, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
| | - Shogo Takahashi
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University, Washington, DC 20057, USA
- Corresponding author
| | - Tomoki Yagai
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Donghwan Kim
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Chad N. Brocker
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Moshe Levi
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University, Washington, DC 20057, USA
| | - Kimihiko Matsusue
- Faculty of Pharmaceutical Science, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
| | - Frank J. Gonzalez
- Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
- Corresponding author
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Kra G, Daddam JR, Moallem U, Kamer H, Ahmad M, Nemirovski A, Contreras GA, Tam J, Zachut M. Effects of Environmental Heat Load on Endocannabinoid System Components in Adipose Tissue of High Yielding Dairy Cows. Animals (Basel) 2022; 12:ani12060795. [PMID: 35327191 PMCID: PMC8944798 DOI: 10.3390/ani12060795] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 03/16/2022] [Accepted: 03/17/2022] [Indexed: 12/12/2022] Open
Abstract
Simple Summary We hypothesized that environmental heat load (HL) may affect the endocannabinoid system (ECS), a central regulator of metabolism and the stress response, in adipose tissue (AT), plasma and milk of dairy cows. In AT of summer vs. winter calving cows, gene expression of ECS components was decreased, but this was not translated to differences in protein abundance or in levels of endocannabinoids. In late-lactation cows that were not cooled vs. cooled, AT protein abundance of the heat sensitive, and ECS receptor, transient-receptor-potential-cation-channel-subfamily-V-member-1 (TRPV1) tended to be lower, and milk levels of 2-arachidonoylglycerol (2-AG) tended to increase in cows that were not cooled; but other ECS components were not different between groups. This suggests that HL is associated with limited alterations in the ECS of AT in dairy cows, either directly or via reduced feed intake. Abstract Environmental heat load (HL) adversely affects the performance of dairy cows. The endocannabinoid system (ECS) regulates metabolism and the stress response, thus we hypothesized that HL may affect the ECS of dairy cows. Our objective was to determine the levels of endocannabinoids (eCBs) and gene and protein expressions of the ECS components in adipose tissue (AT) and plasma of early postpartum (PP) and late-lactation cows. In addition, we examined eCBs in milk, and studied the interaction of eCBs with bovine cannabinoids receptors CB1 and CB2. In the first experiment, plasma and AT were sampled from cows calving during summer (S, n = 9) or winter (W, n = 9). Dry matter intake (DMI) and energy balance (EB) were lower in S vs. W, and relative gene expressions of transient-receptor-potential-cation-channel-subfamily-V-member-1 (TRPV1), the cannabinoid receptors CNR1 (CB1) and CNR2 (CB2), and monoglyceride lipase (MGLL) were decreased in AT of S compared to W. Protein abundance of peroxisome proliferator-activated-receptor-alpha (PPAR-α) was decreased, while tumor-necrosis factor-α (TNF-α) was increased in AT of S vs. W. Other components of the ECS were not different between S and W calving cows. To study whether the degree of HL may affect the ECS, we performed a second experiment with 24 late-lactation cows that were either cooled (CL) or not cooled (heat-stressed; HS) during summer. DMI was lower in HS vs. CL, AT protein abundance of PPAR-α was lower, and TRPV1 tended to be lower in HS vs. CL, but other components of the ECS were not different between groups. Milk levels of 2-arachidonoylglycerol (2-AG) tended to increase in HS vs. CL. Additionally, modeling of the bovine cannabinoid receptors demonstrated their binding to anandamide and 2-AG. Environmental HL, possibly via lower intake, is associated with limited alterations in ECS components in AT of dairy cows.
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Affiliation(s)
- Gitit Kra
- Department of Ruminant Science, Institute of Animal Sciences, Agriculture Research Organization, Volcani Institute, Rishon Lezion 7505101, Israel; (G.K.); (J.R.D.); (U.M.); (H.K.)
- Department of Animal Science, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 76100, Israel
| | - Jayasimha Rayalu Daddam
- Department of Ruminant Science, Institute of Animal Sciences, Agriculture Research Organization, Volcani Institute, Rishon Lezion 7505101, Israel; (G.K.); (J.R.D.); (U.M.); (H.K.)
| | - Uzi Moallem
- Department of Ruminant Science, Institute of Animal Sciences, Agriculture Research Organization, Volcani Institute, Rishon Lezion 7505101, Israel; (G.K.); (J.R.D.); (U.M.); (H.K.)
| | - Hadar Kamer
- Department of Ruminant Science, Institute of Animal Sciences, Agriculture Research Organization, Volcani Institute, Rishon Lezion 7505101, Israel; (G.K.); (J.R.D.); (U.M.); (H.K.)
| | - Majdoleen Ahmad
- Obesity and Metabolism Laboratory, Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112001, Israel; (M.A.); (A.N.); (J.T.)
| | - Alina Nemirovski
- Obesity and Metabolism Laboratory, Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112001, Israel; (M.A.); (A.N.); (J.T.)
| | - G. Andres Contreras
- Department of Large Animal Clinical Sciences, Michigan State University, East Lansing, MI 48824, USA;
| | - Joseph Tam
- Obesity and Metabolism Laboratory, Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112001, Israel; (M.A.); (A.N.); (J.T.)
| | - Maya Zachut
- Department of Ruminant Science, Institute of Animal Sciences, Agriculture Research Organization, Volcani Institute, Rishon Lezion 7505101, Israel; (G.K.); (J.R.D.); (U.M.); (H.K.)
- Correspondence: ; Tel.: +97-2396-83022
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Annunziata C, Pirozzi C, Lama A, Senzacqua M, Comella F, Bordin A, Monnolo A, Pelagalli A, Ferrante MC, Mollica MP, Iossa A, De Falco E, Mattace Raso G, Cinti S, Giordano A, Meli R. Palmitoylethanolamide Promotes White-to-Beige Conversion and Metabolic Reprogramming of Adipocytes: Contribution of PPAR-α. Pharmaceutics 2022; 14:pharmaceutics14020338. [PMID: 35214069 PMCID: PMC8880285 DOI: 10.3390/pharmaceutics14020338] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/21/2022] [Accepted: 01/25/2022] [Indexed: 02/04/2023] Open
Abstract
The potential role of brown and beige adipose tissue against obesity has been recognized. Browning, or beiging of white adipose tissue (WAT) is associated with the remodeling of adipocytes and the improvement of their metabolic and secretory functions. Here, palmitoylethanolamide (PEA) restore the plasticity of brown and white adipocytes impaired in mice on a high-fat diet (HFD). Young male C57Bl/6J mice were fed with control (STD) diet or HFD for 12 weeks. Ultramicronized PEA (30 mg/kg/die p.o.) was administered for an additional 7 weeks, together with HFD. PEA recovered interscapular brown fat morphology and function, increasing UCP1 positivity, noradrenergic innervation, and inducing the mRNA transcription of several specialized thermogenic genes. PEA promotes the beige-conversion of the subcutaneous WAT, increasing thermogenic markers and restoring leptin signaling and tissue hormone sensitivity. The pivotal role of lipid-sensing peroxisome proliferator-activated receptor (PPAR)-α in PEA effects was determined in mature 3T3-L1. Moreover, PEA improved mitochondrial bioenergetics in mature adipocytes measured by a Seahorse analyzer and induced metabolic machinery via AMPK phosphorylation. All these outcomes were dampened by the receptor antagonist GW6471. Finally, PEA induced adipogenic differentiation and increased AMPK phosphorylation in human adipose-derived stromal cells (ASCs) obtained from subcutaneous WAT of normal-weight patients and patients with obesity. We identify PEA and PPAR-α activation as the main mechanism by which PEA can rewire energy-storing white into energy-consuming brown-like adipocytes via multiple and converging effects that restore WAT homeostasis and metabolic flexibility.
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Affiliation(s)
- Chiara Annunziata
- Department of Pharmacy, School of Medicine, University of Naples Federico II, 80131 Naples, Italy; (C.A.); (C.P.); (A.L.); (F.C.); (G.M.R.)
| | - Claudio Pirozzi
- Department of Pharmacy, School of Medicine, University of Naples Federico II, 80131 Naples, Italy; (C.A.); (C.P.); (A.L.); (F.C.); (G.M.R.)
| | - Adriano Lama
- Department of Pharmacy, School of Medicine, University of Naples Federico II, 80131 Naples, Italy; (C.A.); (C.P.); (A.L.); (F.C.); (G.M.R.)
| | - Martina Senzacqua
- Department of Experimental and Clinical Medicine, Marche Polytechnic University, 60020 Ancona, Italy; (M.S.); (S.C.); (A.G.)
| | - Federica Comella
- Department of Pharmacy, School of Medicine, University of Naples Federico II, 80131 Naples, Italy; (C.A.); (C.P.); (A.L.); (F.C.); (G.M.R.)
| | - Antonella Bordin
- Department of Medical-Surgical Sciences and Biotechnologies, Faculty of Pharmacy and Medicine, Sapienza University of Rome, 04100 Latina, Italy; (A.B.); (A.I.); (E.D.F.)
| | - Anna Monnolo
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, 80137 Naples, Italy; (A.M.); (M.C.F.)
| | - Alessandra Pelagalli
- Department of Advanced Biomedical Sciences, University of Naples Federico II, 80131 Naples, Italy;
- Institute of Biostructure and Bioimaging, National Research Council (CNR), 80134 Naples, Italy
| | - Maria Carmela Ferrante
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, 80137 Naples, Italy; (A.M.); (M.C.F.)
| | - Maria Pina Mollica
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy;
| | - Angelo Iossa
- Department of Medical-Surgical Sciences and Biotechnologies, Faculty of Pharmacy and Medicine, Sapienza University of Rome, 04100 Latina, Italy; (A.B.); (A.I.); (E.D.F.)
| | - Elena De Falco
- Department of Medical-Surgical Sciences and Biotechnologies, Faculty of Pharmacy and Medicine, Sapienza University of Rome, 04100 Latina, Italy; (A.B.); (A.I.); (E.D.F.)
- Mediterranea Cardiocenter, 80122 Naples, Italy
| | - Giuseppina Mattace Raso
- Department of Pharmacy, School of Medicine, University of Naples Federico II, 80131 Naples, Italy; (C.A.); (C.P.); (A.L.); (F.C.); (G.M.R.)
| | - Saverio Cinti
- Department of Experimental and Clinical Medicine, Marche Polytechnic University, 60020 Ancona, Italy; (M.S.); (S.C.); (A.G.)
| | - Antonio Giordano
- Department of Experimental and Clinical Medicine, Marche Polytechnic University, 60020 Ancona, Italy; (M.S.); (S.C.); (A.G.)
| | - Rosaria Meli
- Department of Pharmacy, School of Medicine, University of Naples Federico II, 80131 Naples, Italy; (C.A.); (C.P.); (A.L.); (F.C.); (G.M.R.)
- Correspondence: ; Tel.: +39-08-167-8413 (ext. 80131)
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7
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Oral Capsaicinoid Administration Alters the Plasma Endocannabinoidome and Fecal Microbiota of Reproductive-Aged Women Living with Overweight and Obesity. Biomedicines 2021; 9:biomedicines9091246. [PMID: 34572432 PMCID: PMC8471891 DOI: 10.3390/biomedicines9091246] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/12/2021] [Accepted: 09/13/2021] [Indexed: 12/17/2022] Open
Abstract
Capsaicinoids, the pungent principles of chili peppers and prototypical activators of the transient receptor potential of the vanilloid type-1 (TRPV1) channel, which is a member of the expanded endocannabinoid system known as the endocannabinoidome (eCBome), counteract food intake and obesity. In this exploratory study, we examined the blood and stools from a subset of the participants in a cohort of reproductive-aged women with overweight/obesity who underwent a 12-week caloric restriction of 500 kcal/day with the administration of capsaicinoids (two capsules containing 100 mg of a capsicum annuum extract (CAE) each for a daily dose of 4 mg of capsaicinoids) or a placebo. Samples were collected immediately before and after the intervention, and plasma eCBome mediator levels (from 23 participants in total, 13 placebo and 10 CAE) and fecal microbiota taxa (from 15 participants in total, 9 placebo and 6 CAE) were profiled using LC-MS/MS and 16S metagenomic sequencing, respectively. CAE prevented the reduced caloric-intake-induced decrease in beneficial eCBome mediators, i.e., the TRPV1, GPR119 and/or PPARα agonists, N-oleoyl-ethanolamine, N-linoleoyl-ethanolamine and 2-oleoyl-glycerol, as well as the anti-inflammatory N-acyl-ethanolamines N-docosapentaenyl-ethanolamine and N-docosahexaenoyl-ethanolamine. CAE produced few but important alterations in the fecal microbiota, such as an increased relative abundance of the genus Flavonifractor, which is known to be inversely associated with obesity. Correlations between eCBome mediators and other potentially beneficial taxa were also observed, thus reinforcing the hypothesis of the existence of a link between the eCBome and the gut microbiome in obesity.
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A Duet Between Histamine and Oleoylethanolamide in the Control of Homeostatic and Cognitive Processes. Curr Top Behav Neurosci 2021; 59:389-410. [PMID: 34410679 DOI: 10.1007/7854_2021_236] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
In ballet, a pas de deux (in French it means "step of two") is a duet in which the two dancers perform ballet steps together. The suite of dances shares a common theme of partnership. How could we better describe the fine interplay between oleoylethanolamide (OEA) and histamine, two phylogenetically ancient molecules controlling metabolic, homeostatic and cognitive processes? Contrary to the pas de deux though, the two dancers presumably never embrace each other as a dancing pair but execute their "virtuoso solo" constantly exchanging interoceptive messages presumably via vagal afferents, the blood stream, the neuroenteric system. With one exception, which is in the control of liver ketogenesis, as in hepatocytes, OEA biosynthesis strictly depends on the activation of histaminergic H1 receptors. In this review, we recapitulate our main findings that evidence the interplay of histamine and OEA in the control of food consumption and eating behaviour, in the consolidation of emotional memory and mood, and finally, in the synthesis of ketone bodies. We will also summarise some of the putative underlying mechanisms for each scenario.
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9
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Wen JJ, Li MZ, Gao H, Hu JL, Nie QX, Chen HH, Zhang YL, Xie MY, Nie SP. Polysaccharides from fermented Momordica charantia L. with Lactobacillus plantarum NCU116 ameliorate metabolic disorders and gut microbiota change in obese rats. Food Funct 2021; 12:2617-2630. [PMID: 33634806 DOI: 10.1039/d0fo02600j] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Obesity is a chronic disease characterized by overweight resulting from fat accumulation, along with disturbance of metabolism and gut microbiota. Fermentation, as a green processing method, is beneficial for improving the nutrition capacity of food components. Polysaccharides are considered as one of the important components in food and are also potential supplements for anti-obesity treatment. This study aimed to investigate the anti-obesity effects of polysaccharides from fermented and non-fermented Momordica charantia L. with Lactobacillus plantarum NCU116 (FP and NFP) on obese rats by serum metabolomics and gut microbiota analysis. Metabolomics results revealed that abnormal lipid metabolism was formed due to obesity. The supplement of FP and NFP improved the glycerophospholipids, glycosphingolipids, and amino acid metabolism of the obese rats, which alleviated the hypercholesterolemia and overweight in rats. Furthermore, the disorder of gut microbiota was ameliorated by FP and NFP. FP promoted the growth of beneficial bacteria, such as phylum Firmicutes, Actinobacteria, and genera Anaerostipes, Coprococcus, Lactobacillus, and Bifidobacterium. FP also reduced several harmful bacteria belonging to the phylum Proteobacteria and genera Helicobacter. The positive correlation of the weight loss and lowering of serum lipids with the increased beneficial bacteria further elucidated that the anti-obesity effect of FP in obese rats is associated with the regulation of gut microbiota and serum metabolites. The results of this study could provide information for developing probiotic products in the future that may have beneficial effects on the prevention or treatment of obesity.
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Affiliation(s)
- Jia-Jia Wen
- State Key Laboratory of Food Science and Technology, China-Canada Joint Lab of Food Science and Technology (Nanchang), Nanchang University, Nanchang, 330047, China.
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10
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Boyer C, Cussonneau L, Brun C, Deval C, Pais de Barros JP, Chanon S, Bernoud-Hubac N, Daira P, Evans AL, Arnemo JM, Swenson JE, Gauquelin-Koch G, Simon C, Blanc S, Combaret L, Bertile F, Lefai E. Specific shifts in the endocannabinoid system in hibernating brown bears. Front Zool 2020; 17:35. [PMID: 33292302 PMCID: PMC7681968 DOI: 10.1186/s12983-020-00380-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2020] [Accepted: 10/20/2020] [Indexed: 01/30/2023] Open
Abstract
In small hibernators, global downregulation of the endocannabinoid system (ECS), which is involved in modulating neuronal signaling, feeding behavior, energy metabolism, and circannual rhythms, has been reported to possibly drive physiological adaptation to the hibernating state. In hibernating brown bears (Ursus arctos), we hypothesized that beyond an overall suppression of the ECS, seasonal shift in endocannabinoids compounds could be linked to bear’s peculiar features that include hibernation without arousal episodes and capacity to react to external disturbance. We explored circulating lipids in serum and the ECS in plasma and metabolically active tissues in free-ranging subadult Scandinavian brown bears when both active and hibernating. In winter bear serum, in addition to a 2-fold increase in total fatty acid concentration, we found significant changes in relative proportions of circulating fatty acids, such as a 2-fold increase in docosahexaenoic acid C22:6 n-3 and a decrease in arachidonic acid C20:4 n-6. In adipose and muscle tissues of hibernating bears, we found significant lower concentrations of 2-arachidonoylglycerol (2-AG), a major ligand of cannabinoid receptors 1 (CB1) and 2 (CB2). Lower mRNA level for genes encoding CB1 and CB2 were also found in winter muscle and adipose tissue, respectively. The observed reduction in ECS tone may promote fatty acid mobilization from body fat stores, and favor carbohydrate metabolism in skeletal muscle of hibernating bears. Additionally, high circulating level of the endocannabinoid-like compound N-oleoylethanolamide (OEA) in winter could favor lipolysis and fatty acid oxidation in peripheral tissues. We also speculated on a role of OEA in the conservation of an anorexigenic signal and in the maintenance of torpor during hibernation, while sustaining the capacity of bears to sense stimuli from the environment.
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Affiliation(s)
- Christian Boyer
- Université Clermont Auvergne, INRAE, UNH, Clermont-Ferrand, France
| | - Laura Cussonneau
- Université Clermont Auvergne, INRAE, UNH, Clermont-Ferrand, France
| | - Charlotte Brun
- Université de Strasbourg, CNRS, IPHC UMR 7178, Strasbourg, France
| | - Christiane Deval
- Université Clermont Auvergne, INRAE, UNH, Clermont-Ferrand, France
| | | | - Stéphanie Chanon
- Université de Lyon, INSERM, INRAE, INSA, Functional Lipidomic Plateform, Lyon, France
| | | | - Patricia Daira
- Université de Lyon, INSERM, INRAE, INSA, Functional Lipidomic Plateform, Lyon, France
| | - Alina L Evans
- Department of Forestry and Wildlife Management, Inland Norway University of Applied Sciences, Campus Evenstad, NO-2480, Koppang, Norway
| | - Jon M Arnemo
- Department of Forestry and Wildlife Management, Inland Norway University of Applied Sciences, Campus Evenstad, NO-2480, Koppang, Norway.,Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences, SE-901 83, Umeå, Sweden
| | - Jon E Swenson
- Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, NO-1432, Ås, Norway
| | | | - Chantal Simon
- Université de Lyon, INSERM, INRAE, INSA, Functional Lipidomic Plateform, Lyon, France
| | - Stéphane Blanc
- Université de Strasbourg, CNRS, IPHC UMR 7178, Strasbourg, France
| | - Lydie Combaret
- Université Clermont Auvergne, INRAE, UNH, Clermont-Ferrand, France
| | - Fabrice Bertile
- Université de Strasbourg, CNRS, IPHC UMR 7178, Strasbourg, France
| | - Etienne Lefai
- Université Clermont Auvergne, INRAE, UNH, Clermont-Ferrand, France.
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11
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Azar S, Udi S, Drori A, Hadar R, Nemirovski A, Vemuri KV, Miller M, Sherill-Rofe D, Arad Y, Gur-Wahnon D, Li X, Makriyannis A, Ben-Zvi D, Tabach Y, Ben-Dov IZ, Tam J. Reversal of diet-induced hepatic steatosis by peripheral CB1 receptor blockade in mice is p53/miRNA-22/SIRT1/PPARα dependent. Mol Metab 2020; 42:101087. [PMID: 32987186 PMCID: PMC7563015 DOI: 10.1016/j.molmet.2020.101087] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 09/03/2020] [Accepted: 09/17/2020] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVE The endocannabinoid (eCB) system is increasingly recognized as being crucially important in obesity-related hepatic steatosis. By activating the hepatic cannabinoid-1 receptor (CB1R), eCBs modulate lipogenesis and fatty acid oxidation. However, the underlying molecular mechanisms are largely unknown. METHODS We combined unbiased bioinformatics techniques, mouse genetic manipulations, multiple pharmacological, molecular, and cellular biology approaches, and genomic sequencing to systematically decipher the role of the hepatic CB1R in modulating fat utilization in the liver and explored the downstream molecular mechanisms. RESULTS Using an unbiased normalized phylogenetic profiling analysis, we found that the CB1R evolutionarily coevolves with peroxisome proliferator-activated receptor-alpha (PPARα), a key regulator of hepatic lipid metabolism. In diet-induced obese (DIO) mice, peripheral CB1R blockade (using AM6545) induced the reversal of hepatic steatosis and improved liver injury in WT, but not in PPARα-/- mice. The antisteatotic effect mediated by AM6545 in WT DIO mice was accompanied by increased hepatic expression and activity of PPARα as well as elevated hepatic levels of the PPARα-activating eCB-like molecules oleoylethanolamide and palmitoylethanolamide. Moreover, AM6545 was unable to rescue hepatic steatosis in DIO mice lacking liver sirtuin 1 (SIRT1), an upstream regulator of PPARα. Both of these signaling molecules were modulated by the CB1R as measured in hepatocytes exposed to lipotoxic conditions or treated with CB1R agonists in the absence/presence of AM6545. Furthermore, using microRNA transcriptomic profiling, we found that the CB1R regulated the hepatic expression, acetylation, and transcriptional activity of p53, resulting in the enhanced expression of miR-22, which was found to specifically target SIRT1 and PPARα. CONCLUSIONS We provide strong evidence for a functional role of the p53/miR-22/SIRT1/PPARα signaling pathway in potentially mediating the antisteatotic effect of peripherally restricted CB1R blockade.
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Affiliation(s)
- Shahar Azar
- Obesity and Metabolism Laboratory, Institute for Drug Research, School of Pharmacy, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Shiran Udi
- Obesity and Metabolism Laboratory, Institute for Drug Research, School of Pharmacy, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Adi Drori
- Obesity and Metabolism Laboratory, Institute for Drug Research, School of Pharmacy, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Rivka Hadar
- Obesity and Metabolism Laboratory, Institute for Drug Research, School of Pharmacy, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Alina Nemirovski
- Obesity and Metabolism Laboratory, Institute for Drug Research, School of Pharmacy, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Kiran V Vemuri
- Center for Drug Discovery, Northeastern University, Boston, MA, USA
| | - Maya Miller
- Department of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, Hadassah Medical School, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Dana Sherill-Rofe
- Department of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, Hadassah Medical School, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Yhara Arad
- Department of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, Hadassah Medical School, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Devorah Gur-Wahnon
- Laboratory of Medical Transcriptomics, Department of Nephrology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Xiaoling Li
- Laboratory of Signal Transduction, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, USA
| | | | - Danny Ben-Zvi
- Department of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, Hadassah Medical School, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Yuval Tabach
- Department of Developmental Biology and Cancer Research, Institute for Medical Research Israel-Canada, Hadassah Medical School, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Iddo Z Ben-Dov
- Laboratory of Signal Transduction, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC, USA
| | - Joseph Tam
- Obesity and Metabolism Laboratory, Institute for Drug Research, School of Pharmacy, Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel.
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12
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Lefort C, Roumain M, Van Hul M, Rastelli M, Manco R, Leclercq I, Delzenne NM, Marzo VD, Flamand N, Luquet S, Silvestri C, Muccioli GG, Cani PD. Hepatic NAPE-PLD Is a Key Regulator of Liver Lipid Metabolism. Cells 2020; 9:E1247. [PMID: 32443626 PMCID: PMC7291298 DOI: 10.3390/cells9051247] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/05/2020] [Accepted: 05/13/2020] [Indexed: 12/26/2022] Open
Abstract
Diverse metabolic disorders have been associated with an alteration of N-acylethanolamine (NAE) levels. These bioactive lipids are synthesized mainly by N-acylphosphatidylethanolamine-selective phospholipase D (NAPE-PLD) and influence host metabolism. We have previously discovered that NAPE-PLD in the intestine and adipose tissue is connected to the pathophysiology of obesity. However, the physiological function of NAPE-PLD in the liver remains to be deciphered. To study the role of liver NAPE-PLD on metabolism, we generated a new mouse model of inducible Napepld hepatocyte-specific deletion (Napepld∆Hep mice). In this study, we report that Napepld∆Hep mice develop a high-fat diet-like phenotype, characterized by an increased fat mass gain, hepatic steatosis and we show that Napepld∆Hep mice are more sensitive to liver inflammation. We also demonstrate that the role of liver NAPE-PLD goes beyond the mere synthesis of NAEs, since the deletion of NAPE-PLD is associated with a marked modification of various bioactive lipids involved in host homeostasis such as oxysterols and bile acids. Collectively these data suggest that NAPE-PLD in hepatocytes is a key regulator of liver bioactive lipid synthesis and a dysregulation of this enzyme leads to metabolic complications. Therefore, deepening our understanding of the regulation of NAPE-PLD could be crucial to tackle obesity and related comorbidities.
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Affiliation(s)
- Charlotte Lefort
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, Walloon Excellence in Life sciences and BIOtechnology (WELBIO), UCLouvain, Université Catholique de Louvain, Av. E. Mounier, 73 B1.73.11, 1200 Bruxelles, Belgium; (C.L.); (M.V.H.); (M.R.); (N.M.D.)
| | - Martin Roumain
- Bioanalysis and Pharmacology of Bioactive Lipids Research Group, Louvain Drug Research Institute, UCLouvain, Université Catholique de Louvain, 1200 Bruxelles, Belgium; (M.R.); (G.G.M.)
| | - Matthias Van Hul
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, Walloon Excellence in Life sciences and BIOtechnology (WELBIO), UCLouvain, Université Catholique de Louvain, Av. E. Mounier, 73 B1.73.11, 1200 Bruxelles, Belgium; (C.L.); (M.V.H.); (M.R.); (N.M.D.)
| | - Marialetizia Rastelli
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, Walloon Excellence in Life sciences and BIOtechnology (WELBIO), UCLouvain, Université Catholique de Louvain, Av. E. Mounier, 73 B1.73.11, 1200 Bruxelles, Belgium; (C.L.); (M.V.H.); (M.R.); (N.M.D.)
| | - Rita Manco
- Laboratory of Hepato-Gastroenterology, UCLouvain, Université catholique de Louvain, 1200 Bruxelles, Belgium; (R.M.); (I.L.)
| | - Isabelle Leclercq
- Laboratory of Hepato-Gastroenterology, UCLouvain, Université catholique de Louvain, 1200 Bruxelles, Belgium; (R.M.); (I.L.)
| | - Nathalie M. Delzenne
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, Walloon Excellence in Life sciences and BIOtechnology (WELBIO), UCLouvain, Université Catholique de Louvain, Av. E. Mounier, 73 B1.73.11, 1200 Bruxelles, Belgium; (C.L.); (M.V.H.); (M.R.); (N.M.D.)
| | - Vincenzo Di Marzo
- Quebec Heart and Lung Institute Research Centre, Université Laval, Quebec City, QC G1V 0A6, Canada; (V.D.M.); (N.F.); (C.S.)
- Centre NUTRISS, Institute of Nutrition and Functional Foods, Université Laval, Quebec City, QC G1V 0A6, Canada
- Endocannabinoid Research Group, Institute of Biomolecular Chemistry, Consiglio Nazionale delle Ricerche, 80078 Pozzuoli, Napoli, Italy
| | - Nicolas Flamand
- Quebec Heart and Lung Institute Research Centre, Université Laval, Quebec City, QC G1V 0A6, Canada; (V.D.M.); (N.F.); (C.S.)
| | - Serge Luquet
- Université de Paris, BFA, UMR 8251, CNRS, F-75014 Paris, France;
| | - Cristoforo Silvestri
- Quebec Heart and Lung Institute Research Centre, Université Laval, Quebec City, QC G1V 0A6, Canada; (V.D.M.); (N.F.); (C.S.)
| | - Giulio G. Muccioli
- Bioanalysis and Pharmacology of Bioactive Lipids Research Group, Louvain Drug Research Institute, UCLouvain, Université Catholique de Louvain, 1200 Bruxelles, Belgium; (M.R.); (G.G.M.)
| | - Patrice D. Cani
- Metabolism and Nutrition Research Group, Louvain Drug Research Institute, Walloon Excellence in Life sciences and BIOtechnology (WELBIO), UCLouvain, Université Catholique de Louvain, Av. E. Mounier, 73 B1.73.11, 1200 Bruxelles, Belgium; (C.L.); (M.V.H.); (M.R.); (N.M.D.)
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13
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Annunziata C, Lama A, Pirozzi C, Cavaliere G, Trinchese G, Di Guida F, Nitrato Izzo A, Cimmino F, Paciello O, De Biase D, Murru E, Banni S, Calignano A, Mollica MP, Mattace Raso G, Meli R. Palmitoylethanolamide counteracts hepatic metabolic inflexibility modulating mitochondrial function and efficiency in diet-induced obese mice. FASEB J 2019; 34:350-364. [PMID: 31914699 DOI: 10.1096/fj.201901510rr] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 10/08/2019] [Accepted: 10/21/2019] [Indexed: 12/17/2022]
Abstract
Peroxisome proliferator-activated receptor (PPAR)-α activation controls hepatic lipid homeostasis, stimulating fatty acid oxidation, and adapting the metabolic response to lipid overload and storage. Here, we investigate the effect of palmitoylethanolamide (PEA), an endogenous PPAR-α ligand, in counteracting hepatic metabolic inflexibility and mitochondrial dysfunction induced by high-fat diet (HFD) in mice. Long-term PEA administration (30 mg/kg/die per os) in HFD mice limited hepatic lipid accumulation, increased energy expenditure, and markedly reduced insulin resistance. In isolated liver mitochondria, we have demonstrated PEA capability to modulate mitochondrial oxidative capacity and energy efficiency, leading to the reduction of intracellular lipid accumulation and oxidative stress. Moreover, we have evaluated the effect of PEA on mitochondrial bioenergetics of palmitate-challenged HepG2 cells, using Seahorse analyzer. In vitro data showed that PEA recovered mitochondrial dysfunction and reduced lipid accumulation in insulin-resistant HepG2 cells, increasing fatty acid oxidation. Mechanistic studies showed that PEA effect on lipid metabolism was limited by AMP-activated protein kinase (AMPK) inhibition, providing evidence for a pivotal role of AMPK in PEA-induced adaptive metabolic setting. All these findings identify PEA as a modulator of hepatic lipid and glucose homeostasis, limiting metabolic inflexibility induced by nutrient overload.
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Affiliation(s)
- Chiara Annunziata
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Adriano Lama
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Claudio Pirozzi
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | - Gina Cavaliere
- Department of Biology, University of Naples Federico II, Naples, Italy
| | | | | | | | - Fabiano Cimmino
- Department of Biology, University of Naples Federico II, Naples, Italy
| | - Orlando Paciello
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - Davide De Biase
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - Elisabetta Murru
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, Cagliari, Italy
| | - Sebastiano Banni
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria di Monserrato, Cagliari, Italy
| | - Antonio Calignano
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
| | | | | | - Rosaria Meli
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
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14
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Sihag J, Jones PJH. Dietary fatty acid profile influences circulating and tissue fatty acid ethanolamide concentrations in a tissue-specific manner in male Syrian hamsters. Biochim Biophys Acta Mol Cell Biol Lipids 2019; 1864:1563-1579. [PMID: 31301433 DOI: 10.1016/j.bbalip.2019.07.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 07/04/2019] [Accepted: 07/07/2019] [Indexed: 12/20/2022]
Abstract
BACKGROUND The discovery of N‑acylethanolamines (NAEs) has prompted an increase in research aimed at understanding their biological roles including regulation of appetite and energy metabolism. However, a knowledge gap remains to understand the effect of dietary components on NAE levels, in particular, heterogeneity in dietary fatty acid (DFA) profile, on NAE levels across various organs. OBJECTIVE To identify and elucidate the impact of diet on NAE levels in seven different tissues/organs of male hamsters, with the hypothesis that DFA will act as precursors for NAE synthesis in golden Syrian male hamsters. METHOD A two-month feeding trial was performed, wherein hamsters were fed various dietary oil blends with different composition of 18-C fatty acid (FA). RESULTS DFA directly influences tissue FA and NAE levels. After C18:1n9-enriched dietary treatments, marked increases were observed in duodenal C18:1n9 and oleoylethanolamide (OEA) concentrations. Among all tissues; adipose tissue brown, adipose tissue white, brain, heart, intestine-duodenum, intestine-jejunum, and liver, a negative correlation was observed between gut-brain OEA concentrations and body weight. CONCLUSION DFA composition influences FA and NAE levels across all tissues, leading to significant shifts in intestinal-brain OEA concentrations. The endogenously synthesized increased OEA levels in these tissues enable the gut-brain-interrelationship. Henceforth, we summarize that the brain transmits anorexic properties mediated via neuronal signalling, which may contribute to the maintenance of healthy body weight. Thus, the benefits of OEA can be enhanced by the inclusion of C18:1n9-enriched diets, pointing to the possible nutritional use of this naturally occurring bioactive lipid-amide in the management of obesity.
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Affiliation(s)
- Jyoti Sihag
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Manitoba, Canada; Richardson Centre for Functional Foods and Nutraceuticals (RCFFN), University of Manitoba, Winnipeg, Manitoba, Canada
| | - Peter J H Jones
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Manitoba, Canada; Richardson Centre for Functional Foods and Nutraceuticals (RCFFN), University of Manitoba, Winnipeg, Manitoba, Canada.
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15
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Gómez-Boronat M, Isorna E, Armirotti A, Delgado MJ, Piomelli D, de Pedro N. Diurnal Profiles of N-Acylethanolamines in Goldfish Brain and Gastrointestinal Tract: Possible Role of Feeding. Front Neurosci 2019; 13:450. [PMID: 31133788 PMCID: PMC6514144 DOI: 10.3389/fnins.2019.00450] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 04/18/2019] [Indexed: 12/19/2022] Open
Abstract
N-acylethanolamines (NAEs) are a family of endogenous lipid signaling molecules that are involved in regulation of energy homeostasis in vertebrates with a putative role on circadian system. The aim of this work was to study the existence of daily fluctuations in components of NAEs system and their possible dependence on food intake. Specifically, we analyzed the content of oleoylethanolamide (OEA), palmitoylethanolamide (PEA), stearoylethanolamide (SEA), their precursors (NAPEs), as well as the expression of nape-pld (NAEs synthesis enzyme), faah (NAEs degradation enzyme), and pparα (NAEs receptor) in gastrointestinal and brain tissues of goldfish (Carassius auratus) throughout a 24-h cycle. Daily profiles of bmal1a and rev-erbα expression in gastrointestinal tissues were also quantified because these clock genes are also involved in lipid metabolism, are PPAR-targets in mammals, and could be a link between NAEs and circadian system in fish. Gastrointestinal levels of NAEs exhibited daily fluctuations, with a pronounced and rapid postprandial increase, the increment being likely caused by food intake as it is not present in fasted animals. Such periprandial differences were not found in brain, supporting that NAEs mobilization occurs in a tissue-specific manner and suggesting that these three NAEs could be acting as peripheral satiety signals. The abundance of pparα mRNA displayed a daily rhythm in the intestine and the liver, suggesting a possible rhythmicity in the NAEs functionality. The increment of pparα expression during the rest phase can be related with its role stimulating lipid catabolism to obtain energy during the fasting state of the animals. In addition, the clock genes bmal1a and rev-erbα also showed daily rhythms, with a bmal1a increment after feeding, supporting its role as a lipogenic factor. In summary, our data show the existence of all components of NAEs system in fish (OEA, PEA, SEA, precursors, synthesis and degradation enzymes, and the receptor PPARα), supporting the involvement of NAEs as peripheral satiety signals.
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Affiliation(s)
- Miguel Gómez-Boronat
- Departamento de Genética, Fisiología y Microbiología, Unidad Docente de Fisiología Animal, Facultad de Biología, Universidad Complutense de Madrid, Madrid, Spain
| | - Esther Isorna
- Departamento de Genética, Fisiología y Microbiología, Unidad Docente de Fisiología Animal, Facultad de Biología, Universidad Complutense de Madrid, Madrid, Spain
| | - Andrea Armirotti
- Analytical Chemistry Laboratory, Istituto Italiano di Tecnologia, Genoa, Italy
| | - María J Delgado
- Departamento de Genética, Fisiología y Microbiología, Unidad Docente de Fisiología Animal, Facultad de Biología, Universidad Complutense de Madrid, Madrid, Spain
| | - Daniele Piomelli
- Departments of Anatomy and Neurobiology, Pharmacology, and Biological Chemistry, University of California, Irvine, Irvine, CA, United States
| | - Nuria de Pedro
- Departamento de Genética, Fisiología y Microbiología, Unidad Docente de Fisiología Animal, Facultad de Biología, Universidad Complutense de Madrid, Madrid, Spain
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16
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Intestinal epithelial N-acylphosphatidylethanolamine phospholipase D links dietary fat to metabolic adaptations in obesity and steatosis. Nat Commun 2019; 10:457. [PMID: 30692526 PMCID: PMC6349942 DOI: 10.1038/s41467-018-08051-7] [Citation(s) in RCA: 102] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 12/12/2018] [Indexed: 12/17/2022] Open
Abstract
Variations in N-acylethanolamines (NAE) levels are associated with obesity and metabolic comorbidities. Their role in the gut remains unclear. Therefore, we generated a mouse model of inducible intestinal epithelial cell (IEC)-specific deletion of N-acylphosphatidylethanolamine phospholipase D (NAPE-PLD), a key enzyme involved in NAE biosynthesis (Napepld∆IEC). We discovered that Napepld∆IEC mice are hyperphagic upon first high-fat diet (HFD) exposure, and develop exacerbated obesity and steatosis. These mice display hypothalamic Pomc neurons dysfunctions and alterations in intestinal and plasma NAE and 2-acylglycerols. After long-term HFD, Napepld∆IEC mice present reduced energy expenditure. The increased steatosis is associated with higher gut and liver lipid absorption. Napepld∆IEC mice display altered gut microbiota. Akkermansia muciniphila administration partly counteracts the IEC NAPE-PLD deletion effects. In conclusion, intestinal NAPE-PLD is a key sensor in nutritional adaptation to fat intake, gut-to-brain axis and energy homeostasis and thereby constitutes a novel target to tackle obesity and related disorders. Obesity is associated with altered N-acylethanolamine levels (NAE). Here the authors show that deletion of the gene encoding N-acylphosphatidylethanolamine phospholipase D, a key enzyme for NAE synthesis, in intestinal cells of mice leads to the development of obesity and hepatic steatosis via a mechanism involving the gut-brain axis.
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17
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Misto A, Provensi G, Vozella V, Passani MB, Piomelli D. Mast Cell-Derived Histamine Regulates Liver Ketogenesis via Oleoylethanolamide Signaling. Cell Metab 2019; 29:91-102.e5. [PMID: 30318340 DOI: 10.1016/j.cmet.2018.09.014] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 06/11/2018] [Accepted: 09/12/2018] [Indexed: 01/30/2023]
Abstract
The conversion of lipolysis-derived fatty acids into ketone bodies (ketogenesis) is a crucial metabolic adaptation to prolonged periods of food scarcity. The process occurs primarily in liver mitochondria and is initiated by fatty-acid-mediated stimulation of the ligand-operated transcription factor, peroxisome proliferator-activated receptor-α (PPAR-α). Here, we present evidence that mast cells contribute to the control of fasting-induced ketogenesis via a paracrine mechanism that involves secretion of histamine into the hepatic portal circulation, stimulation of liver H1 receptors, and local biosynthesis of the high-affinity PPAR-α agonist, oleoylethanolamide (OEA). Genetic or pharmacological interventions that disable any one of these events, including mast cell elimination, deletion of histamine- or OEA-synthesizing enzymes, and H1 blockade, blunt ketogenesis without affecting lipolysis. The results reveal an unexpected role for mast cells in the regulation of systemic fatty-acid homeostasis, and suggest that OEA may act in concert with lipolysis-derived fatty acids to activate liver PPAR-α and promote ketogenesis.
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Affiliation(s)
- Alessandra Misto
- Drug Discovery and Development, Fondazione Istituto Italiano di Tecnologia, Genoa 16163, Italy; School of Advanced Studies Sant'Anna, Pisa 56127, Italy
| | - Gustavo Provensi
- Department of Neuroscience, Psychology, Drug Research and Child Health, University of Florence, Florence 50139, Italy
| | - Valentina Vozella
- Drug Discovery and Development, Fondazione Istituto Italiano di Tecnologia, Genoa 16163, Italy
| | | | - Daniele Piomelli
- Departments of Anatomy and Neurobiology, Biological Chemistry and Pharmacology, School of Medicine, University of California, Irvine, CA 92697, USA.
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18
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Chianese R, Coccurello R, Viggiano A, Scafuro M, Fiore M, Coppola G, Operto FF, Fasano S, Laye S, Pierantoni R, Meccariello R. Impact of Dietary Fats on Brain Functions. Curr Neuropharmacol 2018; 16:1059-1085. [PMID: 29046155 PMCID: PMC6120115 DOI: 10.2174/1570159x15666171017102547] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Revised: 08/24/2017] [Accepted: 10/10/2017] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Adequate dietary intake and nutritional status have important effects on brain functions and on brain health. Energy intake and specific nutrients excess or deficiency from diet differently affect cognitive processes, emotions, behaviour, neuroendocrine functions and synaptic plasticity with possible protective or detrimental effects on neuronal physiology. Lipids, in particular, play structural and functional roles in neurons. Here the importance of dietary fats and the need to understand the brain mechanisms activated by peripheral and central metabolic sensors. Thus, the manipulation of lifestyle factors such as dietary interventions may represent a successful therapeutic approach to maintain and preserve brain health along lifespan. METHODS This review aims at summarizing the impact of dietary fats on brain functions. RESULTS Starting from fat consumption, nutrient sensing and food-related reward, the impact of gut-brain communications will be discussed in brain health and disease. A specific focus will be on the impact of fats on the molecular pathways within the hypothalamus involved in the control of reproduction via the expression and the release of Gonadotropin-Releasing Hormone. Lastly, the effects of specific lipid classes such as polyunsaturated fatty acids and of the "fattest" of all diets, commonly known as "ketogenic diets", on brain functions will also be discussed. CONCLUSION Despite the knowledge of the molecular mechanisms is still a work in progress, the clinical relevance of the manipulation of dietary fats is well acknowledged and such manipulations are in fact currently in use for the treatment of brain diseases.
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Affiliation(s)
- Rosanna Chianese
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Roberto Coccurello
- Institute of Cell Biology and Neurobiology, National Research Council (C.N.R.), Rome, Italy.,Fondazione S. Lucia (FSL) IRCCS, Roma, Italy
| | - Andrea Viggiano
- Department of Medicine, Surgery and Scuola Medica Salernitana, University of Salerno, Baronissi, SA, Italy
| | - Marika Scafuro
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Marco Fiore
- Institute of Cell Biology and Neurobiology, National Research Council (C.N.R.), Rome, Italy.,Fondazione S. Lucia (FSL) IRCCS, Roma, Italy
| | - Giangennaro Coppola
- Department of Medicine, Surgery and Scuola Medica Salernitana, University of Salerno, Baronissi, SA, Italy.,UO Child and Adolescent Neuropsychiatry, Medical School, University of Salerno, Salerno, Italy
| | | | - Silvia Fasano
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Sophie Laye
- INRA, Bordeaux University, Nutrition and Integrative Neurobiology, UMR, Bordeaux, France
| | - Riccardo Pierantoni
- Department of Experimental Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Rosaria Meccariello
- Department of Movement and Wellness Sciences, Parthenope University of Naples, Naples, Italy
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19
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Di Paola M, Bonechi E, Provensi G, Costa A, Clarke G, Ballerini C, De Filippo C, Passani MB. Oleoylethanolamide treatment affects gut microbiota composition and the expression of intestinal cytokines in Peyer's patches of mice. Sci Rep 2018; 8:14881. [PMID: 30291258 PMCID: PMC6173739 DOI: 10.1038/s41598-018-32925-x] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 09/14/2018] [Indexed: 12/22/2022] Open
Abstract
The lipid sensor oleoylethanolamide (OEA), an endogenous high-affinity agonist of peroxisome proliferator-activated receptor-α (PPAR-α) secreted in the proximal intestine, is endowed with several distinctive homeostatic properties, such as control of appetite, anti-inflammatory activity, stimulation of lipolysis and fatty acid oxidation. When administered exogenously, OEA has beneficial effects in several cognitive paradigms; therefore, in all respects, OEA can be considered a hormone of the gut-brain axis. Here we report an unexplored modulatory effect of OEA on the intestinal microbiota and on immune response. Our study shows for the first time that sub-chronic OEA administration to mice fed a normal chow pellet diet, changes the faecal microbiota profile, shifting the Firmicutes:Bacteroidetes ratio in favour of Bacteroidetes (in particular Bacteroides genus) and decreasing Firmicutes (Lactobacillus), and reduces intestinal cytokines expression by immune cells isolated from Peyer's patches. Our results suggest that sub-chronic OEA treatment modulates gut microbiota composition towards a "lean-like phenotype", and polarises gut-specific immune responses mimicking the effect of a diet low in fat and high in polysaccharides content.
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Affiliation(s)
- Monica Di Paola
- Dipartimento di Biologia, Università di Firenze, Firenze, Italy
| | - Elena Bonechi
- Dipartimento di Neuroscienze, Psicologia, Area del Farmaco e Salute del Bambino, Universitá di Firenze, Firenze, Italy
| | - Gustavo Provensi
- Dipartimento di Neuroscienze, Psicologia, Area del Farmaco e Salute del Bambino, Universitá di Firenze, Firenze, Italy
| | - Alessia Costa
- Dipartimento di Scienze della Salute, Università di Firenze, Firenze, Italy
| | - Gerard Clarke
- Department of Psychiatry and Neurobehavioural Science, and APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Clara Ballerini
- Dipartimento di Medicina Sperimentale e Clinica, Università di Firenze, Firenze, Italy
| | - Carlotta De Filippo
- Instituto di Biologia e Biotecnologie Agrarie (IBBA), Consiglio Nazionale delle Ricerce (CNR), Pisa, Italy
| | - M Beatrice Passani
- Dipartimento di Scienze della Salute, Università di Firenze, Firenze, Italy.
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20
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Endocannabinoids in Body Weight Control. Pharmaceuticals (Basel) 2018; 11:ph11020055. [PMID: 29849009 PMCID: PMC6027162 DOI: 10.3390/ph11020055] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Revised: 05/17/2018] [Accepted: 05/28/2018] [Indexed: 12/15/2022] Open
Abstract
Maintenance of body weight is fundamental to maintain one's health and to promote longevity. Nevertheless, it appears that the global obesity epidemic is still constantly increasing. Endocannabinoids (eCBs) are lipid messengers that are involved in overall body weight control by interfering with manifold central and peripheral regulatory circuits that orchestrate energy homeostasis. Initially, blocking of eCB signaling by first generation cannabinoid type 1 receptor (CB1) inverse agonists such as rimonabant revealed body weight-reducing effects in laboratory animals and men. Unfortunately, rimonabant also induced severe psychiatric side effects. At this point, it became clear that future cannabinoid research has to decipher more precisely the underlying central and peripheral mechanisms behind eCB-driven control of feeding behavior and whole body energy metabolism. Here, we will summarize the most recent advances in understanding how central eCBs interfere with circuits in the brain that control food intake and energy expenditure. Next, we will focus on how peripheral eCBs affect food digestion, nutrient transformation and energy expenditure by interfering with signaling cascades in the gastrointestinal tract, liver, pancreas, fat depots and endocrine glands. To finally outline the safe future potential of cannabinoids as medicines, our overall goal is to address the molecular, cellular and pharmacological logic behind central and peripheral eCB-mediated body weight control, and to figure out how these precise mechanistic insights are currently transferred into the development of next generation cannabinoid medicines displaying clearly improved safety profiles, such as significantly reduced side effects.
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21
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Sihag J, Jones PJH. Oleoylethanolamide: The role of a bioactive lipid amide in modulating eating behaviour. Obes Rev 2018; 19:178-197. [PMID: 29124885 DOI: 10.1111/obr.12630] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2017] [Revised: 09/19/2017] [Accepted: 09/19/2017] [Indexed: 12/13/2022]
Abstract
Fatty acid ethanolamides are lipid mediators that regulate a plethora of physiological functions. One such bioactive lipid mediator, oleoylethanolamide (OEA), is a potent agonist of the peroxisome proliferator-activated receptor-alpha (PPAR-α), which modulates increased expression of the fatty acid translocase CD36 that enables the regulation of feeding behaviour. Consumption of dietary fat rich in oleic acid activates taste receptors in the gut activating specific enzymes that lead to the formation of OEA. OEA further combines with PPAR-α to enable fat oxidation in the liver, resulting in enhanced energy production. Evidence suggests that sustained ingestion of a high-fat diet abolishes the anorexic signal of OEA. Additionally, malfunction of the enterocyte that transforms oleic acid produced during fat digestion into OEA might be responsible for reduced satiety and hyperphagia, resulting in overweight and obesity. Thus, OEA anorectic signalling may be an essential element of the physiology and metabolic system regulating dietary fat intake and obesity. The evidence reviewed in this article indicates that intake of oleic acid, and thereby the resulting OEA imparting anorexic properties, is dependent on CD36, PPAR-α, enterocyte fat sensory receptors, histamine, oxytocin and dopamine; leading to increased fat oxidation and enhanced energy expenditure to induce satiety and increase feeding latency; and that a disruption in any of these systems will cease/curb fat-induced satiety.
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Affiliation(s)
- J Sihag
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Manitoba, Canada.,Richardson Centre for Functional Foods and Nutraceuticals (RCFFN), University of Manitoba, Winnipeg, Manitoba, Canada
| | - P J H Jones
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Manitoba, Canada.,Richardson Centre for Functional Foods and Nutraceuticals (RCFFN), University of Manitoba, Winnipeg, Manitoba, Canada
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22
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Sihag J, Jones PJH. Dietary fatty acid composition impacts plasma fatty acid ethanolamide levels and body composition in golden Syrian hamsters. Food Funct 2018; 9:3351-3362. [DOI: 10.1039/c8fo00621k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Fatty acid ethanolamides (FAEs) are a class of lipid amides that regulate numerous pathophysiological functions.
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Affiliation(s)
- Jyoti Sihag
- Department of Food and Human Nutritional Sciences
- University of Manitoba
- Winnipeg
- Canada
- Richardson Centre for Functional Foods and Nutraceuticals (RCFFN)
| | - Peter J. H. Jones
- Department of Food and Human Nutritional Sciences
- University of Manitoba
- Winnipeg
- Canada
- Richardson Centre for Functional Foods and Nutraceuticals (RCFFN)
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23
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Abstract
Humans swallow a great variety and often large amounts of chemicals as nutrients, incidental food additives and contaminants, drugs, and inhaled particles and chemicals, thus exposing the gastrointestinal tract to many potentially toxic substances. It serves as a barrier in many cases to protect other components of the body from such substances and infections. Fortunately, the gastrointestinal tract is remarkably robust and generally is able to withstand multiple daily assaults by the chemicals to which it is exposed. Some chemicals, however, can affect one or more aspects of the gastrointestinal tract to produce abnormal events that reflect toxicity. It is the purpose of this chapter to evaluate the mechanisms by which toxic chemicals produce their deleterious effects and to determine the consequences of the toxicity on integrity of gastrointestinal structure and function. Probably because of the intrinsic ability of the gastrointestinal tract to resist toxic chemicals, there is a paucity of data regarding gastrointestinal toxicology. It is therefore necessary in many cases to extrapolate toxic mechanisms from infectious processes, inflammatory conditions, ischemia, and other insults in addition to more conventional chemical sources of toxicity.
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24
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Lin L, Metherel AH, Jones PJ, Bazinet RP. Fatty acid amide hydrolase (FAAH) regulates hypercapnia/ischemia-induced increases in n-acylethanolamines in mouse brain. J Neurochem 2017; 142:662-671. [DOI: 10.1111/jnc.14067] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 04/24/2017] [Accepted: 04/26/2017] [Indexed: 01/04/2023]
Affiliation(s)
- Lin Lin
- Department of Nutritional Sciences; University of Toronto; Toronto Canada
| | - Adam H. Metherel
- Department of Nutritional Sciences; University of Toronto; Toronto Canada
| | - Peter J. Jones
- Department of Human Nutritional Sciences; University of Manitoba; Winnipeg Canada
| | - Richard P. Bazinet
- Department of Nutritional Sciences; University of Toronto; Toronto Canada
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25
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Piscitelli F, Bradshaw HB. Endocannabinoid Analytical Methodologies: Techniques That Drive Discoveries That Drive Techniques. ADVANCES IN PHARMACOLOGY (SAN DIEGO, CALIF.) 2017; 80:1-30. [PMID: 28826532 DOI: 10.1016/bs.apha.2017.04.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Identification of the two major endogenous cannabinoid ligands, known as endocannabinoids, N-arachidonoyl-ethanolamine (anandamide, AEA) and 2-arachidonoyl-glycerol (2-AG), opened the way for the identification and isolation of other lipid congeners, all derivatives of fatty acids and related to the Endocannabinoid System. The nomenclature of this anandamide-type class of lipids is evolving as new species are discovered all the time. However, they each fall under the larger umbrella of lipids that are a conjugation of a fatty acid with an amine through and amide bond, which we will refer to as lipoamines. Specific subspecies of lipoamines that have been discovered are the N-acyl-ethanolamides (including AEA), N-acyl-dopamines, N-acyl-serotonins, N-acyl-GABA, N-acyl-taurines, and a growing number of N-acyl amino acids. Emerging data from multiple labs also show that monoacylglycerols (including 2-AG), COX-2 metabolites, and fatty acid esters of hydroxyl fatty acids are interconnected with these lipoamines at both the biosynthetic and metabolic levels. Understanding the molecular relatedness of these lipids is important for studying how they act as signaling molecules; however, a first step in this process hinges on advances in being able to accurately measure them.
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Affiliation(s)
- Fabiana Piscitelli
- Endocannabinoid Research Group, Istituto di Chimica Biomolecolare-Consiglio Nazionale delle Ricerche (ICB-CNR), Pozzuoli, Italy.
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26
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Oleic acid-derived oleoylethanolamide: A nutritional science perspective. Prog Lipid Res 2017; 67:1-15. [PMID: 28389247 DOI: 10.1016/j.plipres.2017.04.001] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2016] [Revised: 03/17/2017] [Accepted: 04/03/2017] [Indexed: 01/11/2023]
Abstract
The fatty acid ethanolamide oleoylethanolamide (OEA) is an endogenous lipid mediator derived from the monounsaturated fatty acid, oleic acid. OEA is synthesized from membrane glycerophospholipids and is a high-affinity agonist of the nuclear transcription factor peroxisome proliferator-activated receptor α (PPAR-α). Dietary intake of oleic acid elevates circulating levels of OEA in humans by increasing substrate availability for OEA biosynthesis. Numerous clinical studies demonstrate a beneficial relationship between high-oleic acid diets and body composition, with emerging evidence to suggest OEA may mediate this response through modulation of lipid metabolism and energy intake. OEA exposure has been shown to stimulate fatty acid uptake, lipolysis, and β-oxidation, and also promote food intake control. Future research on high-oleic acid diets and body composition is warranted to confirm these outcomes and elucidate the underlying mechanisms by which oleic acid exerts its biological effects. These findings have significant practical implications, as the oleic acid-derived OEA molecule may be a promising therapeutic agent for weight management and obesity treatment.
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27
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Karwad MA, Macpherson T, Wang B, Theophilidou E, Sarmad S, Barrett DA, Larvin M, Wright KL, Lund JN, O'Sullivan SE. Oleoylethanolamine and palmitoylethanolamine modulate intestinal permeability in vitro via TRPV1 and PPARα. FASEB J 2016; 31:469-481. [PMID: 27623929 DOI: 10.1096/fj.201500132] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2016] [Accepted: 08/15/2016] [Indexed: 12/26/2022]
Abstract
Cannabinoids modulate intestinal permeability through cannabinoid receptor 1 (CB1). The endocannabinoid-like compounds oleoylethanolamine (OEA) and palmitoylethanolamine (PEA) play an important role in digestive regulation, and we hypothesized they would also modulate intestinal permeability. Transepithelial electrical resistance (TEER) was measured in human Caco-2 cells to assess permeability after application of OEA and PEA and relevant antagonists. Cells treated with OEA and PEA were stained for cytoskeletal F-actin changes and lysed for immunoassay. OEA and PEA were measured by liquid chromatography-tandem mass spectrometry. OEA (applied apically, logEC50 -5.4) and PEA (basolaterally, logEC50 -4.9; apically logEC50 -5.3) increased Caco-2 resistance by 20-30% via transient receptor potential vanilloid (TRPV)-1 and peroxisome proliferator-activated receptor (PPAR)-α. Preventing their degradation (by inhibiting fatty acid amide hydrolase) enhanced the effects of OEA and PEA. OEA and PEA induced cytoskeletal changes and activated focal adhesion kinase and ERKs 1/2, and decreased Src kinases and aquaporins 3 and 4. In Caco-2 cells treated with IFNγ and TNFα, OEA (via TRPV1) and PEA (via PPARα) prevented or reversed the cytokine-induced increased permeability compared to vehicle (0.1% ethanol). PEA (basolateral) also reversed increased permeability when added 48 or 72 h after cytokines (P < 0.001, via PPARα). Cellular and secreted levels of OEA and PEA (P < 0.001-0.001) were increased in response to inflammatory mediators. OEA and PEA have endogenous roles and potential therapeutic applications in conditions of intestinal hyperpermeability and inflammation.-Karwad, M. A., Macpherson, T., Wang, B., Theophilidou, E., Sarmad, S., Barrett, D. A., Larvin, M., Wright, K. L., Lund, J. N., O'Sullivan, S. E. Oleoylethanolamine and palmitoylethanolamine modulate intestinal permeability in vitro via TRPV1 and PPARα.
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Affiliation(s)
- Mustafa A Karwad
- School of Medicine, Royal Derby Hospital, University of Nottingham, Nottingham, United Kingdom
| | - Tara Macpherson
- Division of Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University, Lancaster, United Kingdom
| | - Bo Wang
- Division of Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University, Lancaster, United Kingdom
| | - Elena Theophilidou
- School of Medicine, Royal Derby Hospital, University of Nottingham, Nottingham, United Kingdom
| | - Sarir Sarmad
- Centre for Analytical Bioscience, School of Pharmacy, University of Nottingham, Nottingham, United Kingdom; and
| | - David A Barrett
- Centre for Analytical Bioscience, School of Pharmacy, University of Nottingham, Nottingham, United Kingdom; and
| | - Michael Larvin
- Graduate Entry Medical School, University of Limerick, Limerick, Ireland.,Health Research Institute, University of Limerick, Limerick, Ireland
| | - Karen L Wright
- Division of Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University, Lancaster, United Kingdom
| | - Jonathan N Lund
- School of Medicine, Royal Derby Hospital, University of Nottingham, Nottingham, United Kingdom
| | - Saoirse E O'Sullivan
- School of Medicine, Royal Derby Hospital, University of Nottingham, Nottingham, United Kingdom;
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28
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Decara JM, Pavón FJ, Suárez J, Romero-Cuevas M, Baixeras E, Vázquez M, Rivera P, Gavito AL, Almeida B, Joglar J, de la Torre R, Rodríguez de Fonseca F, Serrano A. Treatment with a novel oleic-acid-dihydroxyamphetamine conjugation ameliorates non-alcoholic fatty liver disease in obese Zucker rats. Dis Model Mech 2016; 8:1213-25. [PMID: 26438694 PMCID: PMC4610231 DOI: 10.1242/dmm.019919] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Fatty liver disease is one of the main hepatic complications associated with obesity. To date, there are no effective treatments for this pathology apart from the use of classical fibrates. In this study, we have characterized the in vivo effects of a novel conjugation of oleic acid with an amphetamine derivative (OLHHA) in an animal model of genetic obesity. Lean and obese Zucker rats received a daily intraperitoneal administration of OLHHA (5 mg kg−1) for 15 days. Plasma and liver samples were collected for the biochemical and molecular biological analyses, including both immunohistochemical and histological studies. The expression of key enzymes and proteins that are involved in lipid metabolism and energy homeostasis was evaluated in the liver samples. The potential of OLHHA to produce adverse drug reactions or toxicity was also evaluated through the monitoring of interactions with hERG channel and liver cytochrome. We found that OLHHA is a drug with a safe pharmacological profile. Treatment for 15 days with OLHHA reduced the liver fat content and plasma triglyceride levels, and this was accompanied by a general improvement in the profile of plasma parameters related to liver damage in the obese rats. A decrease in fat accumulation in the liver was confirmed using histological staining. Additionally, OLHHA was observed to exert anti-apoptotic effects. This hepatoprotective activity in obese rats was associated with an increase in the mRNA and protein expression of the cannabinoid type 1 receptor and a decrease in the expression of the lipogenic enzymes FAS and HMGCR primarily. However, changes in the mRNA expression of certain proteins were not associated with changes in the protein expression (i.e. L-FABP and INSIG2). The present results demonstrate that OLHHA is a potential anti-steatotic drug that ameliorates the obesity-associated fatty liver and suggest the potential use of this new drug for the treatment of non-alcoholic fatty liver disease. Drug Discovery Collection: OLHHA is a safe drug with hepatoprotective and anti-steatotic effects on non-alcoholic fatty liver disease in obese rats.
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Affiliation(s)
- Juan M Decara
- Unidad Gestión Clínica de Salud Mental, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Regional Universitario de Málaga/Universidad de Málaga, Málaga, 29010 Spain
| | - Francisco Javier Pavón
- Unidad Gestión Clínica de Salud Mental, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Regional Universitario de Málaga/Universidad de Málaga, Málaga, 29010 Spain
| | - Juan Suárez
- Unidad Gestión Clínica de Salud Mental, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Regional Universitario de Málaga/Universidad de Málaga, Málaga, 29010 Spain CIBER de Fisiopatología de la Obesidad y la Nutrición (CIBERobn), Instituto de Salud Carlos III (ISCIII), Madrid, 28029 Spain
| | - Miguel Romero-Cuevas
- Unidad Gestión Clínica de Salud Mental, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Regional Universitario de Málaga/Universidad de Málaga, Málaga, 29010 Spain CIBER de Fisiopatología de la Obesidad y la Nutrición (CIBERobn), Instituto de Salud Carlos III (ISCIII), Madrid, 28029 Spain
| | - Elena Baixeras
- Unidad Gestión Clínica de Salud Mental, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Regional Universitario de Málaga/Universidad de Málaga, Málaga, 29010 Spain
| | - Mariam Vázquez
- Unidad Gestión Clínica de Salud Mental, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Regional Universitario de Málaga/Universidad de Málaga, Málaga, 29010 Spain
| | - Patricia Rivera
- Unidad Gestión Clínica de Salud Mental, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Regional Universitario de Málaga/Universidad de Málaga, Málaga, 29010 Spain
| | - Ana L Gavito
- Unidad Gestión Clínica de Salud Mental, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Regional Universitario de Málaga/Universidad de Málaga, Málaga, 29010 Spain
| | - Bruno Almeida
- Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), Neurosciences Program, Barcelona, 08003 Spain Facultat de Ciencies de la Salut i de la Vida, Universitat Pompeu Fabra (CEXS-UPF), Barcelona, 08002 Spain
| | - Jesús Joglar
- Departamento de Química Biológica y Modelización Molecular, Instituto de Química Avanzada de Cataluña (IQAC-CSIC), Barcelona, 08034 Spain
| | - Rafael de la Torre
- CIBER de Fisiopatología de la Obesidad y la Nutrición (CIBERobn), Instituto de Salud Carlos III (ISCIII), Madrid, 28029 Spain Institut Hospital del Mar d'Investigacions Mèdiques (IMIM), Neurosciences Program, Barcelona, 08003 Spain Facultat de Ciencies de la Salut i de la Vida, Universitat Pompeu Fabra (CEXS-UPF), Barcelona, 08002 Spain
| | - Fernando Rodríguez de Fonseca
- Unidad Gestión Clínica de Salud Mental, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Regional Universitario de Málaga/Universidad de Málaga, Málaga, 29010 Spain CIBER de Fisiopatología de la Obesidad y la Nutrición (CIBERobn), Instituto de Salud Carlos III (ISCIII), Madrid, 28029 Spain
| | - Antonia Serrano
- Unidad Gestión Clínica de Salud Mental, Instituto de Investigación Biomédica de Málaga (IBIMA), Hospital Regional Universitario de Málaga/Universidad de Málaga, Málaga, 29010 Spain CIBER de Fisiopatología de la Obesidad y la Nutrición (CIBERobn), Instituto de Salud Carlos III (ISCIII), Madrid, 28029 Spain
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Zhao Q, Zhu Y, Best LG, Umans JG, Uppal K, Tran VT, Jones DP, Lee ET, Howard BV, Zhao J. Metabolic Profiles of Obesity in American Indians: The Strong Heart Family Study. PLoS One 2016; 11:e0159548. [PMID: 27434237 PMCID: PMC4951134 DOI: 10.1371/journal.pone.0159548] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 07/04/2016] [Indexed: 01/08/2023] Open
Abstract
Obesity is a typical metabolic disorder resulting from the imbalance between energy intake and expenditure. American Indians suffer disproportionately high rates of obesity and diabetes. The goal of this study is to identify metabolic profiles of obesity in 431 normoglycemic American Indians participating in the Strong Heart Family Study. Using an untargeted liquid chromatography-mass spectrometry, we detected 1,364 distinct m/z features matched to known compounds in the current metabolomics databases. We conducted multivariate analysis to identify metabolic profiles for obesity, adjusting for standard obesity indicators. After adjusting for covariates and multiple testing, five metabolites were associated with body mass index and seven were associated with waist circumference. Of them, three were associated with both. Majority of the obesity-related metabolites belongs to lipids, e.g., fatty amides, sphingolipids, prenol lipids, and steroid derivatives. Other identified metabolites are amino acids or peptides. Of the nine identified metabolites, five metabolites (oleoylethanolamide, mannosyl-diinositol-phosphorylceramide, pristanic acid, glutamate, and kynurenine) have been previously implicated in obesity or its related pathways. Future studies are warranted to replicate these findings in larger populations or other ethnic groups.
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Affiliation(s)
- Qi Zhao
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, United States of America
| | - Yun Zhu
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, United States of America
| | - Lyle G. Best
- Missouri Breaks Industries Research Inc, Timber Lake, SD, United States of America
| | - Jason G. Umans
- MedStar Health Research Institute, Hyattsville, MD, United States of America
| | - Karan Uppal
- Division of Pulmonary Medicine, Emory University School of Medicine, Atlanta, GA, United States of America
| | - ViLinh T. Tran
- Division of Pulmonary Medicine, Emory University School of Medicine, Atlanta, GA, United States of America
| | - Dean P. Jones
- Division of Pulmonary Medicine, Emory University School of Medicine, Atlanta, GA, United States of America
| | - Elisa T. Lee
- Center for American Indian Health Research, University of Oklahoma Health Science Center, Oklahoma City, OK, United States of America
| | - Barbara V. Howard
- Medstar Research Institute and Georgetown and Howard Universities Centers for Translational Sciences, Washington, DC, United States of America
| | - Jinying Zhao
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, United States of America
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Capasso R, Orlando P, Pagano E, Aveta T, Buono L, Borrelli F, Di Marzo V, Izzo AA. Palmitoylethanolamide normalizes intestinal motility in a model of post-inflammatory accelerated transit: involvement of CB₁ receptors and TRPV1 channels. Br J Pharmacol 2015; 171:4026-37. [PMID: 24818658 DOI: 10.1111/bph.12759] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 04/15/2014] [Accepted: 04/23/2014] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND AND PURPOSE Palmitoylethanolamide (PEA), a naturally occurring acylethanolamide chemically related to the endocannabinoid anandamide, interacts with targets that have been identified in peripheral nerves controlling gastrointestinal motility, such as cannabinoid CB1 and CB2 receptors, TRPV1 channels and PPARα. Here, we investigated the effect of PEA in a mouse model of functional accelerated transit which persists after the resolution of colonic inflammation (post-inflammatory irritable bowel syndrome). EXPERIMENTAL APPROACH Intestinal inflammation was induced by intracolonic administration of oil of mustard (OM). Mice were tested for motility and biochemical and molecular biology changes 4 weeks later. PEA, oleoylethanolamide and endocannabinoid levels were measured by liquid chromatography-mass spectrometry and receptor and enzyme mRNA expression by qRT-PCR. KEY RESULTS OM induced transient colitis and a functional post-inflammatory increase in upper gastrointestinal transit, associated with increased intestinal anandamide (but not 2-arachidonoylglycerol, PEA or oleoylethanolamide) levels and down-regulation of mRNA for TRPV1 channels. Exogenous PEA inhibited the OM-induced increase in transit and tended to increase anandamide levels. Palmitic acid had a weaker effect on transit. Inhibition of transit by PEA was blocked by rimonabant (CB1 receptor antagonist), further increased by 5'-iodoresiniferatoxin (TRPV1 antagonist) and not significantly modified by the PPARα antagonist GW6471. CONCLUSIONS AND IMPLICATIONS Intestinal endocannabinoids and TRPV1 channel were dysregulated in a functional model of accelerated transit exhibiting aspects of post-inflammatory irritable bowel syndrome. PEA counteracted the accelerated transit, the effect being mediated by CB1 receptors (possibly via increased anandamide levels) and modulated by TRPV1 channels.
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Affiliation(s)
- Raffaele Capasso
- Department of Pharmacy, University of Naples Federico II, Naples, Italy
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31
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Borrelli F, Romano B, Petrosino S, Pagano E, Capasso R, Coppola D, Battista G, Orlando P, Di Marzo V, Izzo AA. Palmitoylethanolamide, a naturally occurring lipid, is an orally effective intestinal anti-inflammatory agent. Br J Pharmacol 2014; 172:142-58. [PMID: 25205418 DOI: 10.1111/bph.12907] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Revised: 08/01/2014] [Accepted: 08/31/2014] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND AND PURPOSE Palmitoylethanolamide (PEA) acts via several targets, including cannabinoid CB1 and CB2 receptors, transient receptor potential vanilloid type-1 (TRPV1) ion channels, peroxisome proliferator-activated receptor alpha (PPAR α) and orphan G protein-coupled receptor 55 (GRR55), all involved in the control of intestinal inflammation. Here, we investigated the effect of PEA in a murine model of colitis. EXPERIMENTAL APPROACH Colitis was induced in mice by intracolonic administration of dinitrobenzenesulfonic acid (DNBS). Inflammation was assessed by evaluating inflammatory markers/parameters and by histology; intestinal permeability by a fluorescent method; colonic cell proliferation by immunohistochemistry; PEA and endocannabinoid levels by liquid chromatography mass spectrometry; receptor and enzyme mRNA expression by quantitative RT-PCR. KEY RESULTS DNBS administration caused inflammatory damage, increased colonic levels of PEA and endocannabinoids, down-regulation of mRNA for TRPV1 and GPR55 but no changes in mRNA for CB1 , CB2 and PPARα. Exogenous PEA (i.p. and/or p.o., 1 mg·kg(-1) ) attenuated inflammation and intestinal permeability, stimulated colonic cell proliferation, and increased colonic TRPV1 and CB1 receptor expression. The anti-inflammatory effect of PEA was attenuated or abolished by CB2 receptor, GPR55 or PPARα antagonists and further increased by the TRPV1 antagonist capsazepine. CONCLUSIONS AND IMPLICATIONS PEA improves murine experimental colitis, the effect being mediated by CB2 receptors, GPR55 and PPARα, and modulated by TRPV1 channels.
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Rossi F, Perrotta S, Bellini G, Luongo L, Tortora C, Siniscalco D, Francese M, Torella M, Nobili B, Di Marzo V, Maione S. Iron overload causes osteoporosis in thalassemia major patients through interaction with transient receptor potential vanilloid type 1 (TRPV1) channels. Haematologica 2014; 99:1876-84. [PMID: 25216685 DOI: 10.3324/haematol.2014.104463] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The pathogenesis of bone resorption in β-thalassemia major is multifactorial and our understanding of the underlying molecular and cellular mechanisms remains incomplete. Considering the emerging importance of the endocannabinoid/endovanilloid system in bone metabolism, it may be instructive to examine a potential role for this system in the development of osteoporosis in patients with β-thalassemia major and its relationship with iron overload and iron chelation therapy. This study demonstrates that, in thalassemic-derived osteoclasts, tartrate-resistant acid phosphatase expression inversely correlates with femoral and lumbar bone mineral density, and directly correlates with ferritin levels and liver iron concentration. The vanilloid agonist resiniferatoxin dramatically reduces cathepsin K levels and osteoclast numbers in vitro, without affecting tartrate-resistant acid phosphatase expression. The iron chelators deferoxamine, deferiprone and deferasirox decrease both tartrate-resistant acid phosphatase and cathepsin K expression, as well as osteoclast activity. Taken together, these data show that transient receptor potential vanilloid type 1 activation/desensitization influences tartrate-resistant acid phosphatase expression and activity, and this effect is dependent on iron, suggesting a pivotal role for iron overload in the dysregulation of bone metabolism in patients with thalassemia major. Our applied pharmacology provides evidence for the potential of iron chelators to abrogate these effects by reducing osteoclast activity. Whether iron chelation therapy is capable of restoring bone health in humans requires further study, but the potential to provide dual benefits for patients with β-thalassemia major -preventing iron-overload and alleviating associated osteoporotic changes - is exciting.
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Affiliation(s)
- Francesca Rossi
- Department of Woman, Child and of General and Specialist Surgery, Second University of Naples
| | - Silverio Perrotta
- Department of Woman, Child and of General and Specialist Surgery, Second University of Naples;
| | - Giulia Bellini
- Department of Experimental Medicine, Second University of Naples
| | - Livio Luongo
- Department of Experimental Medicine, Second University of Naples
| | - Chiara Tortora
- Department of Woman, Child and of General and Specialist Surgery, Second University of Naples; Department of Experimental Medicine, Second University of Naples
| | - Dario Siniscalco
- Department of Experimental Medicine, Second University of Naples
| | - Matteo Francese
- Department of Woman, Child and of General and Specialist Surgery, Second University of Naples
| | - Marco Torella
- Department of Woman, Child and of General and Specialist Surgery, Second University of Naples
| | - Bruno Nobili
- Department of Woman, Child and of General and Specialist Surgery, Second University of Naples
| | - Vincenzo Di Marzo
- Institute of Biomolecular Chemistry and Institute of Cybernetics, National Research Council, Pozzuoli; and The Endocannabinoid Research Group, Pozzuoli, Italy
| | - Sabatino Maione
- Department of Experimental Medicine, Second University of Naples; The Endocannabinoid Research Group, Pozzuoli, Italy
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PPARα-UGT axis activation represses intestinal FXR-FGF15 feedback signalling and exacerbates experimental colitis. Nat Commun 2014; 5:4573. [PMID: 25183423 PMCID: PMC4164778 DOI: 10.1038/ncomms5573] [Citation(s) in RCA: 115] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2014] [Accepted: 07/02/2014] [Indexed: 02/07/2023] Open
Abstract
Bile acids play a pivotal role in the pathological development of inflammatory bowel disease (IBD). However, the mechanism of bile acid dysregulation in IBD remains unanswered. Here we show that intestinal peroxisome proliferator-activated receptor α (PPARα)-UDP-glucuronosyltransferases (UGTs) signalling is an important determinant of bile acid homeostasis. Dextran sulphate sodium (DSS)-induced colitis leads to accumulation of bile acids in inflamed colon tissues via activation of the intestinal peroxisome PPARα-UGTs pathway. UGTs accelerate the metabolic elimination of bile acids, and thereby decrease their intracellular levels in the small intestine. Reduced intracellular bile acids results in repressed farnesoid X receptor (FXR)-FGF15 signalling, leading to upregulation of hepatic CYP7A1, thus promoting the de novo bile acid synthesis. Both knockout of PPARα and treatment with recombinant FGF19 markedly attenuate DSS-induced colitis. Thus, we propose that intestinal PPARα-UGTs and downstream FXR-FGF15 signalling play vital roles in control of bile acid homeostasis and the pathological development of colitis. Bile acids have been linked to the development of inflammatory bowel diseases, such as colitis. Here the authors show that bile acid levels in mice are controlled by a circular feedback system involving the nuclear receptors PPARα and FXR, and that this system is dysregulated in colitis.
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Satiety factor oleoylethanolamide recruits the brain histaminergic system to inhibit food intake. Proc Natl Acad Sci U S A 2014; 111:11527-32. [PMID: 25049422 DOI: 10.1073/pnas.1322016111] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Key factors driving eating behavior are hunger and satiety, which are controlled by a complex interplay of central neurotransmitter systems and peripheral stimuli. The lipid-derived messenger oleoylethanolamide (OEA) is released by enterocytes in response to fat intake and indirectly signals satiety to hypothalamic nuclei. Brain histamine is released during the appetitive phase to provide a high level of arousal in anticipation of feeding, and mediates satiety. However, despite the possible functional overlap of satiety signals, it is not known whether histamine participates in OEA-induced hypophagia. Using different experimental settings and diets, we report that the anorexiant effect of OEA is significantly attenuated in mice deficient in the histamine-synthesizing enzyme histidine decarboxylase (HDC-KO) or acutely depleted of histamine via interocerebroventricular infusion of the HDC blocker α-fluoromethylhistidine (α-FMH). α-FMH abolished OEA-induced early occurrence of satiety onset while increasing histamine release in the CNS with an H3 receptor antagonist-increased hypophagia. OEA augmented histamine release in the cortex of fasted mice within a time window compatible to its anorexic effects. OEA also increased c-Fos expression in the oxytocin neurons of the paraventricular nuclei of WT but not HDC-KO mice. The density of c-Fos immunoreactive neurons in other brain regions that receive histaminergic innervation and participate in the expression of feeding behavior was comparable in OEA-treated WT and HDC-KO mice. Our results demonstrate that OEA requires the integrity of the brain histamine system to fully exert its hypophagic effect and that the oxytocin neuron-rich nuclei are the likely hypothalamic area where brain histamine influences the central effects of OEA.
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35
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Kleberg K, Hassing HA, Hansen HS. Classical endocannabinoid-like compounds and their regulation by nutrients. Biofactors 2014; 40:363-72. [PMID: 24677570 DOI: 10.1002/biof.1158] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Accepted: 01/07/2014] [Indexed: 11/08/2022]
Abstract
Endocannabinoid-like compounds are structurally related to the true endocannabinoids but do not contain highly unsaturated fatty acids, and they do not bind the cannabinoid receptors. The classical endocannabinoid-like compounds include N-acylethanolamines and 2-monoacylglycerols, and their structural resemblance to the endocannabinoids makes them players in the endocannabinoid system, where they can interfere with the actions of the true endocannabinoids, because they in several cases engage the same synthesizing and degrading enzymes. In addition they have pharmacological actions of their own, which are particularly interesting in a nutritional and metabolic context. Exogenously supplied oleoylethanolamide, palmitoylethanolamide, and linoleoylethanolamide have anorexic effects, and the endogenous formation of these N-acylethanolamines in the small intestine may serve an important role in regulating food intake, through signaling via PPARα and the vagus nerve to the brain appetite center. A chronic high-fat diet will decrease intestinal levels of these anorectic N-acylethanolamines and this may contribute to the hyperphagic effect of high-fat diet; 2-monoacylglycerols mediate endocrine responses in the small intestine; probably trough activation of GPR119 on enteroendocrine cells, and diet-derived 2-monoacylglycerols, for example, 2-oleoylglycerol and 2-palmitoylglycerol might be important for intestinal fat sensing. Whether these 2-monoacylglycerols have signaling functions in other tissues is unclear at present.
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Affiliation(s)
- Karen Kleberg
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark
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36
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Tinoco AB, Armirotti A, Isorna E, Delgado MJ, Piomelli D, de Pedro N. Role of oleoylethanolamide as a feeding regulator in goldfish. ACTA ACUST UNITED AC 2014; 217:2761-9. [PMID: 24855680 DOI: 10.1242/jeb.106161] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Oleoylethanolamide (OEA) is a bioactive lipid mediator, produced in the intestine and other tissues, which is involved in energy balance regulation in mammals, modulating feeding and lipid metabolism. The purpose of the present study was to investigate the presence and possible role of OEA in feeding regulation in goldfish (Carassius auratus). We assessed whether goldfish peripheral tissues and brain contain OEA and their regulation by nutritional status. OEA was detected in all studied tissues (liver, intestinal bulb, proximal intestine, muscle, hypothalamus, telencephalon and brainstem). Food deprivation (48 h) reduced intestinal OEA levels and levels increased upon re-feeding, suggesting that this compound may be involved in the short-term regulation of food intake in goldfish, as a satiety factor. Next, the effects of acute intraperitoneal administration of OEA on feeding, swimming and plasma levels of glucose and triglycerides were analysed. Food intake, swimming activity and circulating triglyceride levels were reduced by OEA 2 h post-injection. Finally, the possible interplay among OEA and other feeding regulators (leptin, cholecystokinin, ghrelin, neuropeptide Y, orexin and monoamines) was investigated. OEA actions on energy homeostasis in goldfish could be mediated, at least in part, through interactions with ghrelin and the serotonergic system, as OEA treatment reduced ghrelin expression in the intestinal bulb, and increased serotonergic activity in the telencephalon. In summary, our results indicate for the first time in fish that OEA could be involved in the regulation of feeding, swimming and lipid metabolism, suggesting a high conservation of OEA actions in energy balance throughout vertebrate evolution.
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Affiliation(s)
- Ana B Tinoco
- Departamento de Fisiología (Fisiología Animal II), Facultad de Biología, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Andrea Armirotti
- Department of Drug Discovery and Development, Istituto Italiano di Tecnologia, 16163 Genoa, Italy
| | - Esther Isorna
- Departamento de Fisiología (Fisiología Animal II), Facultad de Biología, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - María J Delgado
- Departamento de Fisiología (Fisiología Animal II), Facultad de Biología, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Daniele Piomelli
- Department of Drug Discovery and Development, Istituto Italiano di Tecnologia, 16163 Genoa, Italy
| | - Nuria de Pedro
- Departamento de Fisiología (Fisiología Animal II), Facultad de Biología, Universidad Complutense de Madrid, 28040 Madrid, Spain
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37
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Palmitoylethanolamide in CNS health and disease. Pharmacol Res 2014; 86:32-41. [PMID: 24844438 DOI: 10.1016/j.phrs.2014.05.006] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 05/07/2014] [Accepted: 05/08/2014] [Indexed: 01/08/2023]
Abstract
The existence of acylethanolamides (AEs) in the mammalian brain has been known for decades. Among AEs, palmitoylethanolamide (PEA) is abundant in the central nervous system (CNS) and conspicuously produced by neurons and glial cells. Antihyperalgesic and neuroprotective properties of PEA have been mainly related to the reduction of neuronal firing and to control of inflammation. Growing evidence suggest that PEA may be neuroprotective during CNS neurodegenerative diseases. Advances in the understanding of the physiology and pharmacology of PEA have potentiated its interest as useful biological tool for disease management. Several rapid non-genomic and delayed genomic mechanisms of action have been identified for PEA as peroxisome proliferator-activated receptor (PPAR)-α dependent. First, an early molecular control, through Ca(+2)-activated intermediate- and/or big-conductance K(+) channels opening, drives to rapid neuronal hyperpolarization. This is reinforced by the increase of the inward Cl(-) currents due to the modulation of the gamma aminobutyric acid A receptor and by the desensitization of the transient receptor potential channel type V1. Moreover, the gene transcription-mediated mechanism sustains the long-term anti-inflammatory effects, by reducing pro-inflammatory enzyme expression and increasing neurosteroid synthesis. Overall, the integration of these different modes of action allows PEA to exert an immediate and prolonged efficacious control in neuron signaling either on inflammatory process or neuronal excitability, maintaining cellular homeostasis. In this review, we will discuss the effect of PEA on metabolism, behavior, inflammation and pain perception, related to the control of central functions and the emerging evidence demonstrating its therapeutic efficacy in several neurodegenerative diseases.
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Iannotti FA, Piscitelli F, Martella A, Mazzarella E, Allarà M, Palmieri V, Parrella C, Capasso R, Di Marzo V. Analysis of the "endocannabinoidome" in peripheral tissues of obese Zucker rats. Prostaglandins Leukot Essent Fatty Acids 2013; 89:127-35. [PMID: 23830028 DOI: 10.1016/j.plefa.2013.06.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Revised: 05/30/2013] [Accepted: 06/04/2013] [Indexed: 11/18/2022]
Abstract
The endocannabinoid system (ECS) represents one of the major determinants of metabolic disorders. We investigated potential changes in the endogenous levels of anandamide (AEA), 2-arachidonoylglycerol (2-AG), N-oleoylethanolamine (OEA) and N-palmitoylethanolamine (PEA) in some peripheral organs and tissues of obese Zucker(fa/fa) and lean Zucker(fa/+) rats by qPCR, liquid chromatography mass spectrometry, western blot and enzymatic activity assays. At 10-12 weeks of age AEA levels were significantly lower in BAT, small intestine and heart and higher in soleus of Zucker(fa/fa) rats. In this tissue, also the expression of CB1 receptors was higher. By contrast in Zucker(fa/fa) rats, 2-AG levels were changed (and lower) solely in the small and large intestine. Finally, in Zucker(fa/fa), PEA levels were unchanged, whereas OEA was slightly lower in BAT, and higher in the large intestine. Interestingly, these differences were accompanied by differential alterations of the genes regulating ECS tone. In conclusion, the levels of endocannabinoids are altered during obesity in a way partly correlating with changes of the genes related to their metabolism and activity.
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Affiliation(s)
- F A Iannotti
- Endocannabinoid Research Group (ERG), Institute of Biomolecular Chemistry (ICB), Consiglio Nazionale delle Ricerche (CNR), Pozzuoli (NA), Italy
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Nutritional properties of dietary omega-3-enriched phospholipids. BIOMED RESEARCH INTERNATIONAL 2013; 2013:965417. [PMID: 23984423 PMCID: PMC3747496 DOI: 10.1155/2013/965417] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/30/2013] [Revised: 06/04/2013] [Accepted: 06/07/2013] [Indexed: 12/17/2022]
Abstract
Dietary fatty acids regulate several physiological functions. However, to exert their properties, they have to be present in the diet in an optimal balance. Particular attention has been focused on tissue highly polyunsaturated fatty acids (HPUFAs) n-6/n-3 ratio, influenced by the type and the esterified form of dietary fatty acids. Dietary EPA and DHA when esterified to phospholipids (PLs) are more efficiently incorporated into tissue PLs and seem to possess peculiar properties through specific mechanism(s) of action, such as the capacity to affect endocannabinoid biosynthesis at much lower doses than EPA and DHA in triglyceride form, probably because of the above mentioned higher incorporation into tissue PLs. Downregulation of the endocannabinoid system seems to mediate the positive effects exerted by omega-3-enriched PLs on several parameters of metabolic syndrome. PLs are one of the major dietary forms of EPA and DHA we are exposed to with the everyday diet; therefore, it is not surprising that it guarantees an effective EPA and DHA nutritional activity. Future studies should address whether EPA and DHA in PL form are also more effective than other formulations in ameliorating other pathological conditions where n-3 HPUFAs seem to exert beneficial activities such as cancer and psychiatric disorders.
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Syed SK, Bui HH, Beavers LS, Farb TB, Ficorilli J, Chesterfield AK, Kuo MS, Bokvist K, Barrett DG, Efanov AM. Regulation of GPR119 receptor activity with endocannabinoid-like lipids. Am J Physiol Endocrinol Metab 2012; 303:E1469-78. [PMID: 23074242 DOI: 10.1152/ajpendo.00269.2012] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The GPR119 receptor plays an important role in the secretion of incretin hormones in response to nutrient consumption. We have studied the ability of an array of naturally occurring endocannabinoid-like lipids to activate GPR119 and have identified several lipid receptor agonists. The most potent receptor agonists identified were three N-acylethanolamines: oleoylethanolamine (OEA), palmitoleoylethanolamine, and linoleylethanolamine (LEA), all of which displayed similar potency in activating GPR119. Another lipid, 2-oleoylglycerol (2-OG), also activated GPR119 receptor but with significantly lower potency. Endogenous levels of endocannabinoid-like lipids were measured in intestine in fasted and refed mice. Of the lipid GPR119 agonists studied, the intestinal levels of only OEA, LEA, and 2-OG increased significantly upon refeeding. Intestinal levels of OEA and LEA in the fasted mice were low. In the fed state, OEA levels only moderately increased, whereas LEA levels rose drastically. 2-OG was the most abundant of the three GPR119 agonists in intestine, and its levels were radically elevated in fed mice. Our data suggest that, in lean mice, 2-OG and LEA may serve as physiologically relevant endogenous GPR119 agonists that mediate receptor activation upon nutrient uptake.
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Affiliation(s)
- Samreen K Syed
- Lilly Research Laboratories, Eli Lilly and Company, Indianapolis, IN 46285, USA
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Voitychuk OI, Asmolkova VS, Gula NM, Sotkis GV, Galadari S, Howarth FC, Oz M, Shuba YM. Modulation of excitability, membrane currents and survival of cardiac myocytes by N-acylethanolamines. Biochim Biophys Acta Mol Cell Biol Lipids 2012; 1821:1167-76. [DOI: 10.1016/j.bbalip.2012.05.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2011] [Revised: 04/17/2012] [Accepted: 05/11/2012] [Indexed: 12/21/2022]
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Stone VM, Dhayal S, Smith DM, Lenaghan C, Brocklehurst KJ, Morgan NG. The cytoprotective effects of oleoylethanolamide in insulin-secreting cells do not require activation of GPR119. Br J Pharmacol 2012; 165:2758-70. [PMID: 22029844 DOI: 10.1111/j.1476-5381.2011.01755.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND AND PURPOSE β-cells express a range of fatty acid-responsive G protein-coupled receptors, including GPR119, which regulates insulin secretion and is seen as a potential therapeutic target in type 2 diabetes. The long-chain unsaturated fatty acid derivative oleoylethanolamide (OEA) is an endogenous agonist of GPR119 and, under certain conditions, some long-chain unsaturated fatty acids can promote β-cell cytoprotection. It is not known, however, if OEA is cytoprotective in β-cells. The present study has examined this and determined whether GPR119 is involved. METHODS Clonal rat insulin-secreting cell lines, BRIN-BD11 or INS-1E, were exposed to fatty acids complexed with BSA. cAMP levels, insulin release and cell viability were measured. Protein expression was studied by Western blotting and receptor expression by RT-PCR. KEY RESULTS GPR119 was expressed in both BRIN-BD11 and INS-1E cells and OEA was cytoprotective in these cells. However, cytoprotection was not reproduced by any of a range of selective, synthetic ligands of GPR119. The cytoprotective response to OEA was lost during exposure to inhibitors of fatty acid amide hydrolase (FAAH) suggesting that OEA per se is not the cytoprotective species but that release of free oleate is required. Similar data were obtained with anandamide, which was cytoprotective only under conditions favouring release of free arachidonate. CONCLUSIONS AND IMPLICATIONS Activation of GPR119 is not required to mediate the cytoprotective actions of OEA in BRIN-BD11 or INS-1E cells. Rather, OEA is internalised and subjected to hydrolysis by FAAH to release free oleate, which then mediates the cytoprotection.
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Affiliation(s)
- Virginia M Stone
- Institute of Biomedical & Clinical Sciences, Peninsula Medical School, University of Exeter, Plymouth, Devon, UK
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Alonso M, Serrano A, Vida M, Crespillo A, Hernandez-Folgado L, Jagerovic N, Goya P, Reyes-Cabello C, Perez-Valero V, Decara J, Macías-González M, Bermúdez-Silva FJ, Suárez J, Rodríguez de Fonseca F, Pavón FJ. Anti-obesity efficacy of LH-21, a cannabinoid CB(1) receptor antagonist with poor brain penetration, in diet-induced obese rats. Br J Pharmacol 2012; 165:2274-91. [PMID: 21951309 DOI: 10.1111/j.1476-5381.2011.01698.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND AND PURPOSE Peripheral blockade of cannabinoid CB(1) receptors has been proposed as a safe and effective therapy against obesity, putatively devoid of the adverse psychiatric side effects of centrally acting CB(1) receptor antagonists. In this study we analysed the effects of LH-21, a peripherally acting neutral cannabinoid receptor antagonist with poor brain penetration, in an animal model of diet-induced obesity. EXPERIMENTAL APPROACH To induce obesity, male Wistar rats were fed a high-fat diet (HFD; 60 kcal% fat) whereas controls received a standard diet (SD; 10 kcal% fat). Following 10 weeks of feeding, animals received a daily i.p. injection of vehicle or 3 mg·kg(-1) LH-21 for 10 days. Plasma and liver samples were used for biochemical analyses whereas visceral fat-pad samples were analysed for lipid metabolism gene expression using real-time RT-PCR. In addition, the potential of LH-21 to interact with hepatic cytochrome P450 isoforms and cardiac human Ether-à-go-go Related Gene (hERG) channels was evaluated. KEY RESULTS LH-21 reduced feeding and body weight gain in HFD-fed animals compared with the control group fed SD. In adipose tissue, this effect was associated with decreased gene expression of: (i) leptin; (ii) lipogenic enzymes, including SCD-1; (iii) CB(1) receptors; and (iv) both PPARα and PPARγ. Although there were no significant differences in plasma parameters between HFD- and SD-fed rats, LH-21 did not seem to induce hepatic, cardiac or renal toxicity. CONCLUSIONS AND IMPLICATIONS These results support the hypothesis that treatment with the peripherally neutral acting CB(1) receptor antagonist, LH-21, may promote weight loss through modulation of visceral adipose tissue.
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Affiliation(s)
- Mónica Alonso
- Laboratorio de Medicina Regenerativa, Hospital Regional Universitario Carlos Haya, Fundación IMABIS, Málaga, Spain
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Deblon N, Veyrat-Durebex C, Bourgoin L, Caillon A, Bussier AL, Petrosino S, Piscitelli F, Legros JJ, Geenen V, Foti M, Wahli W, Di Marzo V, Rohner-Jeanrenaud F. Mechanisms of the anti-obesity effects of oxytocin in diet-induced obese rats. PLoS One 2011; 6:e25565. [PMID: 21980491 PMCID: PMC3181274 DOI: 10.1371/journal.pone.0025565] [Citation(s) in RCA: 183] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2011] [Accepted: 09/06/2011] [Indexed: 12/18/2022] Open
Abstract
Apart from its role during labor and lactation, oxytocin is involved in several other functions. Interestingly, oxytocin- and oxytocin receptor-deficient mice develop late-onset obesity with normal food intake, suggesting that the hormone might exert a series of beneficial metabolic effects. This was recently confirmed by data showing that central oxytocin infusion causes weight loss in diet-induced obese mice. The aim of the present study was to unravel the mechanisms underlying such beneficial effects of oxytocin. Chronic central oxytocin infusion was carried out in high fat diet-induced obese rats. Its impact on body weight, lipid metabolism and insulin sensitivity was determined. We observed a dose-dependent decrease in body weight gain, increased adipose tissue lipolysis and fatty acid β-oxidation, as well as reduced glucose intolerance and insulin resistance. The additional observation that plasma oxytocin levels increased upon central infusion suggested that the hormone might affect adipose tissue metabolism by direct action. This was demonstrated using in vitro, ex vivo, as well as in vivo experiments. With regard to its mechanism of action in adipose tissue, oxytocin increased the expression of stearoyl-coenzyme A desaturase 1, as well as the tissue content of the phospholipid precursor, N-oleoyl-phosphatidylethanolamine, the biosynthetic precursor of the oleic acid-derived PPAR-alpha activator, oleoylethanolamide. Because PPAR-alpha regulates fatty acid β-oxidation, we hypothesized that this transcription factor might mediate the oxytocin effects. This was substantiated by the observation that, in contrast to its effects in wild-type mice, oxytocin infusion failed to induce weight loss and fat oxidation in PPAR-alpha-deficient animals. Altogether, these results suggest that oxytocin administration could represent a promising therapeutic approach for the treatment of human obesity and type 2 diabetes.
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Affiliation(s)
- Nicolas Deblon
- Division of Endocrinology, Diabetology and Nutrition, Department of Internal Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Christelle Veyrat-Durebex
- Division of Endocrinology, Diabetology and Nutrition, Department of Internal Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Lucie Bourgoin
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Aurélie Caillon
- Division of Endocrinology, Diabetology and Nutrition, Department of Internal Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Anne-Lise Bussier
- Division of Endocrinology, Diabetology and Nutrition, Department of Internal Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Stefania Petrosino
- Endocannabinoid Research Group, Institute of Biomolecular Chemistry, CNR, Naples, Italy
| | - Fabiana Piscitelli
- Endocannabinoid Research Group, Institute of Biomolecular Chemistry, CNR, Naples, Italy
| | - Jean-Jacques Legros
- Centre Hospitalier Régional de la Citadelle, University of Liege, Liege, Belgium
| | - Vincent Geenen
- Centre of Immunology, University of Liege, CHU B-23, Liege, Belgium
| | - Michelangelo Foti
- Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, Geneva, Switzerland
| | - Walter Wahli
- Center for Integrative Genomics, National Research Center Frontiers in Genetics, University of Lausanne, Lausanne, Switzerland
| | - Vincenzo Di Marzo
- Endocannabinoid Research Group, Institute of Biomolecular Chemistry, CNR, Naples, Italy
| | - Françoise Rohner-Jeanrenaud
- Division of Endocrinology, Diabetology and Nutrition, Department of Internal Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
- * E-mail:
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Piscitelli F, Carta G, Bisogno T, Murru E, Cordeddu L, Berge K, Tandy S, Cohn JS, Griinari M, Banni S, Di Marzo V. Effect of dietary krill oil supplementation on the endocannabinoidome of metabolically relevant tissues from high-fat-fed mice. Nutr Metab (Lond) 2011; 8:51. [PMID: 21749725 PMCID: PMC3154144 DOI: 10.1186/1743-7075-8-51] [Citation(s) in RCA: 113] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2011] [Accepted: 07/13/2011] [Indexed: 12/24/2022] Open
Abstract
Background Omega-3 polyunsaturated fatty acids (ω-3-PUFA) are known to ameliorate several metabolic risk factors for cardiovascular disease, and an association between elevated peripheral levels of endogenous ligands of cannabinoid receptors (endocannabinoids) and the metabolic syndrome has been reported. We investigated the dose-dependent effects of dietary ω-3-PUFA supplementation, given as krill oil (KO), on metabolic parameters in high fat diet (HFD)-fed mice and, in parallel, on the levels, in inguinal and epididymal adipose tissue (AT), liver, gastrocnemius muscle, kidneys and heart, of: 1) the endocannabinoids, anandamide and 2-arachidonoylglycerol (2-AG), 2) two anandamide congeners which activate PPARα but not cannabinoid receptors, N-oleoylethanolamine and N-palmitoylethanolamine, and 3) the direct biosynthetic precursors of these compounds. Methods Lipids were identified and quantified using liquid chromatography coupled to atmospheric pressure chemical ionization single quadrupole mass spectrometry (LC-APCI-MS) or high resolution ion trap-time of flight mass spectrometry (LC-IT-ToF-MS). Results Eight-week HFD increased endocannabinoid levels in all tissues except the liver and epididymal AT, and KO reduced anandamide and/or 2-AG levels in all tissues but not in the liver, usually in a dose-dependent manner. Levels of endocannabinoid precursors were also generally down-regulated, indicating that KO affects levels of endocannabinoids in part by reducing the availability of their biosynthetic precursors. Usually smaller effects were found of KO on OEA and PEA levels. Conclusions Our data suggest that KO may promote therapeutic benefit by reducing endocannabinoid precursor availability and hence endocannabinoid biosynthesis.
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Affiliation(s)
- Fabiana Piscitelli
- Endocannabinoid Research Group, Istituto di Chimica Biomolecolare, CNR, Pozzuoli (NA), Italy
| | - Gianfranca Carta
- Dipartimento di Biologia Sperimentale, Università di Cagliari, Italy; and Nutrisearch s.r.l. Pula (CA) Italy
| | - Tiziana Bisogno
- Endocannabinoid Research Group, Istituto di Chimica Biomolecolare, CNR, Pozzuoli (NA), Italy
| | - Elisabetta Murru
- Dipartimento di Biologia Sperimentale, Università di Cagliari, Italy; and Nutrisearch s.r.l. Pula (CA) Italy
| | - Lina Cordeddu
- Dipartimento di Biologia Sperimentale, Università di Cagliari, Italy; and Nutrisearch s.r.l. Pula (CA) Italy
| | | | - Sally Tandy
- Nutrition and Metabolism Group, Heart Research Institute, Sydney, Australia
| | - Jeffrey S Cohn
- Nutrition and Metabolism Group, Heart Research Institute, Sydney, Australia
| | | | - Sebastiano Banni
- Dipartimento di Biologia Sperimentale, Università di Cagliari, Italy; and Nutrisearch s.r.l. Pula (CA) Italy
| | - Vincenzo Di Marzo
- Endocannabinoid Research Group, Istituto di Chimica Biomolecolare, CNR, Pozzuoli (NA), Italy
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Lucanic M, Held JM, Vantipalli MC, Klang IM, Graham JB, Gibson BW, Lithgow GJ, Gill MS. N-acylethanolamine signalling mediates the effect of diet on lifespan in Caenorhabditis elegans. Nature 2011; 473:226-9. [PMID: 21562563 PMCID: PMC3093655 DOI: 10.1038/nature10007] [Citation(s) in RCA: 110] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2010] [Accepted: 03/17/2011] [Indexed: 02/01/2023]
Abstract
Dietary restriction (DR) is a robust means of extending adult lifespan and postponing age-related disease in many species, including yeast, worms, flies and rodents1,2. Studies of the genetic requirements for lifespan extension by DR in the nematode Caenorhabditis elegans (C. elegans) have implicated a number of key players in this process3–5, including the nutrient-sensing target of rapamycin (TOR) pathway6 and the Foxa transcription factor PHA-47. However, little is known about the metabolic signals that coordinate the organismal response to DR and maintain homeostasis when nutrients are limited. The endocannabinoid (EC) system is an excellent candidate to play such a role given its involvement in regulating nutrient intake and energy balance8. Despite this, a direct role for EC signaling in DR or lifespan determination has yet to be demonstrated, in part due to the apparent absence of EC signaling pathways in model organisms that are amenable to lifespan analysis9. N-acylethanolamines (NAEs) are lipid-derived signaling molecules, which include the mammalian EC arachidonoyl ethanolamide (AEA). Here we identify NAEs in C. elegans, show that NAE abundance is reduced under DR and that NAE deficiency is sufficient to extend lifespan through a DR mechanism requiring PHA-4. Conversely, dietary supplementation with the nematode NAE eicosapentaenoyl ethanolamide (EPEA) not only inhibits DR-induced lifespan extension in wild type animals, but also suppresses lifespan extension in a TOR pathway mutant. This demonstrates a role for NAE signaling in aging and suggests that NAEs represent a signal that coordinates nutrient status with metabolic changes that ultimately determine lifespan.
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Affiliation(s)
- Mark Lucanic
- Buck Institute for Research on Aging, 8001 Redwood Boulevard, Novato, California 94945, USA
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Jumpertz R, Guijarro A, Pratley RE, Piomelli D, Krakoff J. Central and peripheral endocannabinoids and cognate acylethanolamides in humans: association with race, adiposity, and energy expenditure. J Clin Endocrinol Metab 2011; 96:787-91. [PMID: 21177788 PMCID: PMC3047230 DOI: 10.1210/jc.2010-2028] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
CONTEXT Peripheral and central endocannabinoids and cognate acylethanolamides (AEs) may play important but distinct roles in regulating energy balance. OBJECTIVE We hypothesized that in humans central/peripheral endocannabinoids are differently associated with adiposity and energy expenditure and differ by race. DESIGN We examined associations of arachindonoylethanolamide, 2-arachidonoylglycerol, palmitoylethanolamide, and oleoylethanolamide (OEA) assayed in plasma and cerebrospinal fluid (CSF) with race, adiposity, and energy expenditure. SETTING/PARTICIPANTS In this monitored clinical inpatient study, CSF was obtained by lumbar puncture in 27 individuals (12 Caucasian, 11 American Indian, and four African-American). Twenty-four hour and sleep energy expenditure were measured by indirect calorimetry in a respiratory chamber. MAIN OUTCOME MEASURE Samples were analyzed from a previous study originally designed to test a blood-brain barrier leptin transport deficit in human obesity. RESULTS CSF (but not peripheral) 2-arachidonoylglycerol was significantly increased in American Indians compared with Caucasians (18.48 ± 6.17 vs. 10.62 ± 4.58 pmol/ml, P < 0.01). In the whole group, peripheral AEs were positively but in CSF negatively associated with adiposity. However, in multivariate models adjusted for the other peripheral and CSF AEs, peripheral arachindonoylethanolamide was the only AE significantly associated with adiposity. Interestingly, CSF OEA concentrations were positively associated with adjusted 24 hour and sleep energy expenditure (r = 0.47, P < 0.05; r = 0.42, P < 0.05), but peripheral OEA was not. CONCLUSIONS These data indicate a central alteration of the endocannabinoid system in American Indians and furthermore show that AEs in both compartments play an important but distinct role in human energy balance regulation.
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Affiliation(s)
- Reiner Jumpertz
- Obesity and Diabetes Clinical Research Section, National Institutes of Health/National Institute of Diabetes and Digestive and Kidney Diseases/Department of Health and Human Services, 4212 North 16th Street, Phoenix, Arizona 85016, USA.
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Dipasquale P, Romano A, Cianci S, Righetti L, Gaetani S. Oleoylethanolamide: a new player in energy metabolism control. Role in food intake. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.ddmec.2011.01.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Pavón FJ, Serrano A, Romero-Cuevas M, Alonso M, Rodríguez de Fonseca F. Oleoylethanolamide: a new player in peripheral control of energy metabolism. Therapeutic implications. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.ddmec.2011.02.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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50
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de Luis D, Sagrado MG, Pacheco D, Terroba M, Martin T, Cuellar L, Ventosa M. Effects of C358A missense polymorphism of the endocannabinoid degrading enzyme fatty acid amide hydrolase on weight loss and cardiovascular risk factors 1 year after biliopancreatic diversion surgery. Surg Obes Relat Dis 2010; 6:516-20. [DOI: 10.1016/j.soard.2010.01.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2009] [Revised: 01/25/2010] [Accepted: 01/27/2010] [Indexed: 10/19/2022]
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