1
|
Carpéné C, Gomez-Zorita S, Gupta R, Grès S, Rancoule C, Cadoudal T, Mercader J, Gomez A, Bertrand C, Iffiu-Soltész Z. Combination of low dose of the anti-adipogenic agents resveratrol and phenelzine in drinking water is not sufficient to prevent obesity in very-high-fat diet-fed mice. Eur J Nutr 2014; 53:1625-35. [PMID: 24531732 DOI: 10.1007/s00394-014-0668-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Accepted: 02/05/2014] [Indexed: 02/07/2023]
Abstract
PURPOSE Resveratrol inhibits lipid accumulation but suffers from limited bioavailability. The anti-depressive agent phenelzine limits adipogenesis in various models of cultured preadipocytes, and this hydrazine derivative also inhibits de novo lipogenesis in mature adipocytes. It was therefore tested whether resveratrol effects on adiposity reduction and glucose tolerance improvement could be reinforced by co-administration with phenelzine. METHODS Mice fed a very-high-fat diet (VHFD, 60% calories as fat) were subjected to drinking solution containing low dose of resveratrol (0.003%) and/or 0.02% phenelzine for 12 weeks. Body fat content, glucose tolerance, food and water consumption were checked during treatment while fat depot mass was determined at the end of supplementation. Direct influence of the agents on lipogenesis and glucose uptake was tested in adipocytes. RESULTS Epididymal fat depots were reduced in mice drinking phenelzine alone or with resveratrol. No limitation of body weight gain or body fat content was observed in the groups drinking resveratrol or phenelzine, separately or in combination. The altered glucose tolerance and the increased fat body composition of VHFD-fed mice were not reversed by resveratrol and/or phenelzine. Such lack of potentiation between resveratrol and phenelzine prompted us to verify in vitro their direct effects on mouse adipocytes. Both molecules inhibited de novo lipogenesis, but did not potentiate each other at 10 or 100 μM. Only resveratrol inhibited hexose uptake in a manner that was not improved by phenelzine. CONCLUSIONS Phenelzine has no interest to be combined with low doses of resveratrol for treating/preventing obesity, when considering the VHFD mouse model.
Collapse
Affiliation(s)
- C Carpéné
- Institut des Maladies Métaboliques et Cardiovasculaires (I2MC), Institut National de la Santé et de la Recherche Médicale, U 1048, Team 3, CHU Rangueil, Université de Toulouse, UPS, 31432, Toulouse Cedex 4, France,
| | | | | | | | | | | | | | | | | | | |
Collapse
|
2
|
Cadoudal T, Buléon M, Sengenès C, Diene G, Desneulin F, Molinas C, Eddiry S, Conte-Auriol F, Daviaud D, Martin PGP, Bouloumié A, Salles JP, Tauber M, Valet P. Impairment of adipose tissue in Prader-Willi syndrome rescued by growth hormone treatment. Int J Obes (Lond) 2014; 38:1234-40. [PMID: 24406482 DOI: 10.1038/ijo.2014.3] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 12/06/2013] [Accepted: 01/01/2014] [Indexed: 11/09/2022]
Abstract
BACKGROUND Prader-Willi syndrome (PWS) results from abnormalities in the genomic imprinting process leading to hypothalamic dysfunction with an alteration of growth hormone (GH) secretion. PWS is associated with early morbid obesity and short stature which can be efficiently improved with GH treatment. OBJECTIVES Our aims were to highlight adipose tissue structural and functional impairments in children with PWS and to study the modifications of those parameters on GH treatment. SUBJECTS AND METHODS Plasma samples and adipose tissue biopsies were obtained from 23 research centers in France coordinated by the reference center for PWS in Toulouse, France. Lean controls (n=33), non-syndromic obese (n=53), untreated (n=26) and GH-treated PWS (n=43) children were enrolled in the study. Adipose tissue biopsies were obtained during scheduled surgeries from 15 lean control, 7 untreated and 8 GH-treated PWS children. RESULTS Children with PWS displayed higher insulin sensitivity as shown by reduced glycemia, insulinemia and HOMA-IR compared with non-syndromic obese children. In contrast, plasma inflammatory cytokines such as TNF-α, MCP-1 and IL-8 were increased in PWS. Analysis of biopsies compared with control children revealed decreased progenitor cell content in the stromal vascular fraction of adipose tissue and an impairment of lipolytic response to β-adrenergic agonist in PWS adipocytes. Interestingly, both of these alterations in PWS seem to be ameliorated on GH treatment. CONCLUSION Herein, we report adipose tissue dysfunctions in children with PWS which may be partially restored by GH treatment.
Collapse
Affiliation(s)
- T Cadoudal
- 1] INSERM, UMR 1048, Institut des Maladies Métaboliques et Cardiovasculaires I2MC, Toulouse, France [2] Université Paul Sabatier, UMR 1048, Toulouse, France
| | - M Buléon
- 1] INSERM, UMR 1048, Institut des Maladies Métaboliques et Cardiovasculaires I2MC, Toulouse, France [2] Université Paul Sabatier, UMR 1048, Toulouse, France
| | - C Sengenès
- 1] INSERM, UMR 1048, Institut des Maladies Métaboliques et Cardiovasculaires I2MC, Toulouse, France [2] Université Paul Sabatier, UMR 1048, Toulouse, France
| | - G Diene
- Unité d'endocrinologie, obésité, maladies osseuses, génétique et gynécologie médicale. Centre de référence du syndrome de Prader-Willi, Hôpital des enfants, Toulouse, France
| | - F Desneulin
- Axe pédiatrique du CIC 9302/INSERM. Hôpital des enfants, Toulouse, France
| | - C Molinas
- 1] Unité d'endocrinologie, obésité, maladies osseuses, génétique et gynécologie médicale. Centre de référence du syndrome de Prader-Willi, Hôpital des enfants, Toulouse, France [2] Axe pédiatrique du CIC 9302/INSERM. Hôpital des enfants, Toulouse, France
| | - S Eddiry
- INSERM, UMR 1043, Toulouse, France
| | - F Conte-Auriol
- 1] Axe pédiatrique du CIC 9302/INSERM. Hôpital des enfants, Toulouse, France [2] INSERM, UMR 1043, Toulouse, France
| | - D Daviaud
- 1] INSERM, UMR 1048, Institut des Maladies Métaboliques et Cardiovasculaires I2MC, Toulouse, France [2] Université Paul Sabatier, UMR 1048, Toulouse, France
| | - P G P Martin
- 1] INRA, UMR1331, Toxalim, Research Centre in Food Toxicology, Toulouse, France [2] Université de Toulouse, INP, UMR1331, Toxalim, Toulouse, France
| | - A Bouloumié
- 1] INSERM, UMR 1048, Institut des Maladies Métaboliques et Cardiovasculaires I2MC, Toulouse, France [2] Université Paul Sabatier, UMR 1048, Toulouse, France
| | - J-P Salles
- 1] Unité d'endocrinologie, obésité, maladies osseuses, génétique et gynécologie médicale. Centre de référence du syndrome de Prader-Willi, Hôpital des enfants, Toulouse, France [2] Axe pédiatrique du CIC 9302/INSERM. Hôpital des enfants, Toulouse, France [3] INSERM, UMR 1043, Toulouse, France
| | - M Tauber
- 1] Unité d'endocrinologie, obésité, maladies osseuses, génétique et gynécologie médicale. Centre de référence du syndrome de Prader-Willi, Hôpital des enfants, Toulouse, France [2] INSERM, UMR 1043, Toulouse, France
| | - P Valet
- 1] INSERM, UMR 1048, Institut des Maladies Métaboliques et Cardiovasculaires I2MC, Toulouse, France [2] Université Paul Sabatier, UMR 1048, Toulouse, France
| |
Collapse
|
3
|
Cadoudal T, Blouin JM, Collinet M, Fouque F, Tan GD, Loizon E, Beale EG, Frayn KN, Karpe F, Vidal H, Benelli C, Forest C. Acute and selective regulation of glyceroneogenesis and cytosolic phosphoenolpyruvate carboxykinase in adipose tissue by thiazolidinediones in type 2 diabetes. Diabetologia 2007; 50:666-75. [PMID: 17242918 DOI: 10.1007/s00125-006-0560-5] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2006] [Accepted: 11/10/2006] [Indexed: 10/23/2022]
Abstract
AIMS/HYPOTHESIS Regulation of glyceroneogenesis and its key enzyme cytosolic phosphoenolpyruvate carboxykinase (PEPCK-C) plays a major role in the control of fatty acid release from adipose tissue. Here we investigate the effect of rosiglitazone on the expression of genes involved in fatty acid metabolism and the resulting metabolic consequences. MATERIALS AND METHODS Rosiglitazone was administered to Zucker fa/fa rats for 4 days and to 24 diabetic patients for 12 weeks, then mRNA expression for the genes encoding PEPCK-C, mitochondrial PEPCK, adipocyte lipid-binding protein, glycerol kinase, lipoprotein lipase and glycerol-3-phosphate dehydrogenase was examined in s.c. adipose tissue by real-time RT-PCR. Glyceroneogenesis was determined using [1-(14)C]pyruvate incorporation into lipids. Cultured adipose tissue explants from overweight women undergoing plastic surgery were incubated with rosiglitazone for various times before mRNA determination and analysis of PEPCK-C protein, activity and glyceroneogenesis. RESULTS Rosiglitazone administration to rats induced the expression of the gene encoding PEPCK-C mRNA (PCK1) and PEPCK-C activity in adipose tissue with a resulting 2.5-fold increase in glyceroneogenesis. This was accompanied by an improvement in dyslipidaemia as demonstrated by the decrease in plasma NEFAs and triacylglycerol. In rosiglitazone-treated diabetic patients, PCK1 mRNA was raised 2.5-fold in s.c. adipose tissue. Rosiglitazone treatment of adipose tissue explants from overweight women caused a selective augmentation in PCK1 mRNA which reached a maximum of 9-fold at 14 h, while mRNA for other genes remained unaffected. Experiments with inhibitors showed a direct and transcription-only effect, which was followed by an increase in PEPCK-C protein, enzyme activity and glyceroneogenesis. CONCLUSIONS/INTERPRETATION These results favour adipocyte glyceroneogenesis as the initial thiazolidinedione-responsive pathway leading to improvement in dyslipidaemia.
Collapse
|