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Souza APDE, Carvalho LOT, Pedroso AP, Moraes ADES, Cipullo MAT, Dâmaso AR, Telles MM, Oyama LM, Tashima AK, Caranti DA, Ribeiro EB. An interdisciplinary therapy for lifestyle change is effective in improving psychological and inflammatory parameters in women with grade I obesity. AN ACAD BRAS CIENC 2023; 95:e20230365. [PMID: 37909611 DOI: 10.1590/0001-3765202320230365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 05/03/2023] [Indexed: 11/03/2023] Open
Abstract
Obesity and depression, disorders associated with inflammation, have high incidences in women. Understanding the derangements present in the initial phase of obesity may point to factors that could help avoiding disease aggravation. The present study aimed at investigating the effects of a 6-months interdisciplinary therapy for weight loss in women with grade I obesity. Before and after the therapy, 37 middle-aged women donated blood and responded to questionnaires for depression and anxiety symptoms. Inflammatory parameters were evaluated in serum and a preliminary screening of the plasma proteome was performed. The therapy decreased anthropometric, psychological scores, and serum levels of inflammatory parameters. Depression and anxiety scores correlated positively with some inflammatory parameters. The proteomic analysis showed changes in proteins related to cholesterol metabolism and inflammatory response. Interdisciplinary therapy improves anthropometric and inflammatory statuses and ameliorating psychological symptoms. The decrease of MCP-1 levels after interdisciplinary therapy has not been reported so far, at the best of our knowledge. The present demonstration of positive associations of inflammatory markers and psychological scores indicate that these mediators may be useful to monitor psychological status in obesity. The present proteome data, although preliminary, pointed to plasma alterations indicative of improvement of inflammation after interdisciplinary therapy.
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Affiliation(s)
- Adriana P DE Souza
- Programa de Pós-Graduação em Nutrição, Universidade Federal de São Paulo (UNIFESP), Escola Paulista de Medicina, Departamento de Fisiologia, Rua Botucatu, 862, 2° andar, Vila Clementino, 04023-062 São Paulo, SP, Brazil
| | - Lorenza Oliveira T Carvalho
- Programa de Pós-Graduação em Nutrição, Universidade Federal de São Paulo (UNIFESP), Escola Paulista de Medicina, Departamento de Fisiologia, Rua Botucatu, 862, 2° andar, Vila Clementino, 04023-062 São Paulo, SP, Brazil
| | - Amanda Paula Pedroso
- Programa de Pós-Graduação em Nutrição, Universidade Federal de São Paulo (UNIFESP), Escola Paulista de Medicina, Departamento de Fisiologia, Rua Botucatu, 862, 2° andar, Vila Clementino, 04023-062 São Paulo, SP, Brazil
| | - Amanda DE Santos Moraes
- Universidade Federal de São Paulo (UNIFESP), Departamento de Biociências, Grupo de Estudo de Obesidade (GEO), Av. Dr. Epitácio Pessoa, 741, 11045-301 Santos, SP, Brazil
| | - Marcos Alberto Taddeo Cipullo
- Universidade Federal de São Paulo (UNIFESP), Departamento de Biociências, Grupo de Estudo de Obesidade (GEO), Av. Dr. Epitácio Pessoa, 741, 11045-301 Santos, SP, Brazil
| | - Ana Raimunda Dâmaso
- Programa de Pós-Graduação em Nutrição, Universidade Federal de São Paulo (UNIFESP), Escola Paulista de Medicina, Departamento de Fisiologia, Rua Botucatu, 862, 2° andar, Vila Clementino, 04023-062 São Paulo, SP, Brazil
| | - Mônica M Telles
- Programa de Pós-Graduação em Nutrição, Universidade Federal de São Paulo (UNIFESP), Escola Paulista de Medicina, Departamento de Fisiologia, Rua Botucatu, 862, 2° andar, Vila Clementino, 04023-062 São Paulo, SP, Brazil
| | - Lila M Oyama
- Programa de Pós-Graduação em Nutrição, Universidade Federal de São Paulo (UNIFESP), Escola Paulista de Medicina, Departamento de Fisiologia, Rua Botucatu, 862, 2° andar, Vila Clementino, 04023-062 São Paulo, SP, Brazil
| | - Alexandre K Tashima
- Universidade Federal de São Paulo (UNIFESP), Escola Paulista de Medicina, Departamento de Bioquímica, Rua Botucatu, 862, Vila Clementino, 04023-062 São Paulo, SP, Brazil
| | - Danielle A Caranti
- Universidade Federal de São Paulo (UNIFESP), Departamento de Biociências, Grupo de Estudo de Obesidade (GEO), Av. Dr. Epitácio Pessoa, 741, 11045-301 Santos, SP, Brazil
| | - Eliane B Ribeiro
- Programa de Pós-Graduação em Nutrição, Universidade Federal de São Paulo (UNIFESP), Escola Paulista de Medicina, Departamento de Fisiologia, Rua Botucatu, 862, 2° andar, Vila Clementino, 04023-062 São Paulo, SP, Brazil
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Araújo COD, Pedroso AP, Boldarine VT, Fernandes AMAP, Perez JJM, Montenegro RM, Montenegro APDR, de Carvalho AB, Fernandes VO, Oyama LM, Carvalho PO, Maia CSC, Bueno AA, Ribeiro EB, Telles MM. Plasma signatures of Congenital Generalized Lipodystrophy patients identified by untargeted lipidomic profiling are not changed after a fat-containing breakfast meal. Prostaglandins Leukot Essent Fatty Acids 2023; 196:102584. [PMID: 37573715 DOI: 10.1016/j.plefa.2023.102584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 07/26/2023] [Accepted: 07/31/2023] [Indexed: 08/15/2023]
Abstract
BACKGROUND The incapacity to store lipids in adipose tissue in Congenital Generalized Lipodystrophy (CGL) causes hypoleptinemia, increased appetite, ectopic fat deposition and lipotoxicity. CGL patients experience shortened life expectancy. The plasma lipidomic profile has not been characterized fully in CGL, nor has the extent of dietary intake in its modulation. The present work investigated the plasma lipidomic profile of CGL patients in comparison to eutrophic individuals at the fasted state and after a breakfast meal. METHOD Blood samples from 11 CGL patients and 10 eutrophic controls were collected after 12 h fasting (T0) and 90 min after an ad libitum fat-containing breakfast (T90). The lipidomic profile of extracted plasma lipids was characterized by non-target liquid chromatography mass spectrometry. RESULTS Important differences between groups were observed at T0 and at T90. Several molecular species of fatty acyls, glycerolipids, sphingolipids and glycerophospholipids were altered in CGL. All the detected fatty acyl molecular species, several diacylglycerols and one triacylglycerol species were upregulated in CGL. Among sphingolipids, one sphingomyelin and one glycosphingolipid species showed downregulation in CGL. Alterations in the glycerophospholipids glycerophosphoethanolamines, glycerophosphoserines and cardiolipins were more complex. Interestingly, when comparing T90 versus T0, the lipidomic profile in CGL did not change as intensely as it did for control participants. CONCLUSIONS The present study found profound alterations in the plasma lipidomic profile of complex lipids in CGL patients as compared to control subjects. A fat-containing breakfast meal did not appear to significantly influence the CGL profile observed in the fasted state. Our study may have implications for clinical practice, also aiding to a deeper comprehension of the role of complex lipids in CGL in view of novel therapeutic strategies.
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Affiliation(s)
- Camilla O D Araújo
- Universidade Federal de São Paulo (UNIFESP), Escola Paulista de Medicina, Departamento de Fisiologia, São Paulo, SP, Brazil
| | - Amanda P Pedroso
- Universidade Federal de São Paulo (UNIFESP), Escola Paulista de Medicina, Departamento de Fisiologia, São Paulo, SP, Brazil
| | - Valter T Boldarine
- Universidade Federal de São Paulo (UNIFESP), Escola Paulista de Medicina, Departamento de Fisiologia, São Paulo, SP, Brazil
| | - Anna Maria A P Fernandes
- Postgraduate Program of Health Sciences, São Francisco University, Bragança Paulista, SP, Brazil
| | - José J M Perez
- Laboratory of Multidisciplinary Research, São Francisco University, Bragança Paulista, SP, Brazil
| | - Renan M Montenegro
- Brazilian Group for the Study of Inherited and Acquired Lipodystrophies - Hospital Universitário Walter Cantídio, Departamento de Medicina Clínica e Departamento de Saúde Comunitária, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza-Ceará, Brazil
| | - Ana Paula D R Montenegro
- Brazilian Group for the Study of Inherited and Acquired Lipodystrophies - Hospital Universitário Walter Cantídio, Departamento de Medicina Clínica e Departamento de Saúde Comunitária, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza-Ceará, Brazil
| | - Annelise B de Carvalho
- Brazilian Group for the Study of Inherited and Acquired Lipodystrophies - Hospital Universitário Walter Cantídio, Departamento de Medicina Clínica e Departamento de Saúde Comunitária, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza-Ceará, Brazil
| | - Virgínia O Fernandes
- Brazilian Group for the Study of Inherited and Acquired Lipodystrophies - Hospital Universitário Walter Cantídio, Departamento de Medicina Clínica e Departamento de Saúde Comunitária, Faculdade de Medicina, Universidade Federal do Ceará, Fortaleza-Ceará, Brazil
| | - Lila M Oyama
- Universidade Federal de São Paulo (UNIFESP), Escola Paulista de Medicina, Departamento de Fisiologia, São Paulo, SP, Brazil
| | - Patrícia O Carvalho
- Laboratory of Multidisciplinary Research, São Francisco University, Bragança Paulista, SP, Brazil
| | - Carla S C Maia
- Departamento de Nutrição, Universidade Estadual do Ceará (UECE), Campus do Itaperi, Fortaleza, CE, Brazil
| | - Allain A Bueno
- College of Health, Life and Environmental Sciences, University of Worcester, Worcester WR2 6AJ, United Kingdom.
| | - Eliane B Ribeiro
- Universidade Federal de São Paulo (UNIFESP), Escola Paulista de Medicina, Departamento de Fisiologia, São Paulo, SP, Brazil
| | - Mônica M Telles
- Universidade Federal de São Paulo (UNIFESP), Escola Paulista de Medicina, Departamento de Fisiologia, São Paulo, SP, Brazil
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Carvalheira JBC, Ribeiro EB, Araújo EP, Guimarães RB, Telles MM, Torsoni M, Gontijo JAR, Velloso LA, Saad MJA. Expression of Concern: Selective impairment of insulin signalling in the hypothalamus of obese Zucker rats. Diabetologia 2017:10.1007/s00125-017-4358-4. [PMID: 28913539 DOI: 10.1007/s00125-017-4358-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- J B C Carvalheira
- Departamento de Clínica Médica, FCM, Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil
| | - E B Ribeiro
- Departamento de Fisiologia, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - E P Araújo
- Departamento de Clínica Médica, FCM, Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil
| | - R B Guimarães
- Departamento de Fisiologia, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - M M Telles
- Departamento de Fisiologia, Universidade Federal de São Paulo (UNIFESP), São Paulo, SP, Brazil
| | - M Torsoni
- Departamento de Clínica Médica, FCM, Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil
| | - J A R Gontijo
- Departamento de Clínica Médica, FCM, Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil
| | - L A Velloso
- Departamento de Clínica Médica, FCM, Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil
| | - M J A Saad
- Departamento de Clínica Médica, FCM, Universidade Estadual de Campinas (UNICAMP), Campinas, Brazil.
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Banin RM, de Andrade IS, Cerutti SM, Oyama LM, Telles MM, Ribeiro EB. Ginkgo biloba Extract (GbE) Stimulates the Hypothalamic Serotonergic System and Attenuates Obesity in Ovariectomized Rats. Front Pharmacol 2017; 8:605. [PMID: 28928661 PMCID: PMC5591947 DOI: 10.3389/fphar.2017.00605] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 08/21/2017] [Indexed: 11/13/2022] Open
Abstract
Menopause is associated with increased risk to develop obesity but the mechanisms involved are not fully understood. We have shown that Ginkgo biloba extract (GbE) improved diet-induced obesity. Since GbE might be effective in the treatment of obesity related to menopause, avoiding the side effects of hormone replacement therapy, we investigated the effect of GbE on hypothalamic systems controlling energy homeostasis. Wistar rats were either ovariectomized (OVX) or Sham-operated. After 2 months, either 500 mg.kg-1 of GbE or vehicle were administered daily by gavage for 14 days. A subset of animals received an intracerebroventricular (i.c.v.) injection of serotonin (300 μg) or vehicle and food intake was measured after 12 and 24 h. Another subset was submitted to in vivo microdialysis and 5-HT levels of the medial hypothalamus were measured by high performance liquid chromatography, before and up to 2 h after the administration of 500 mg.kg-1 of GbE. Additional animals were used for quantification of 5-HT1A, 5-HT1B, 5-HT2C, 5-HTT, and pro-opiomelanocortin hypothalamic protein levels by Western blotting. OVX increased food intake and body weight and adiposity while GbE attenuated these alterations. i.c.v. serotonin significantly reduced food intake in Sham, Sham + GbE, and OVX + GbE groups while it failed to do so in the OVX group. In the OVX rats, GbE stimulated 5-HT microdialysate levels while it reduced hypothalamic 5-HTT protein levels. The results indicate that GbE improved the ovariectomy-induced resistance to serotonin hypophagia, at least in part through stimulation of the hypothalamic serotonergic activity. Since body weight gain is one of the most important consequences of menopause, the stimulation of the serotonergic transmission by GbE may represent a potential alternative therapy for menopause-related obesity.
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Affiliation(s)
- Renata M Banin
- Disciplina de Fisiologia da Nutrição, Departamento de Fisiologia, Universidade Federal de São PauloSão Paulo, Brazil.,Setor de Morfofisiologia e Patologia, Departamento de Ciências Biológicas, Universidade Federal de São PauloDiadema, Brazil
| | - Iracema S de Andrade
- Disciplina de Fisiologia da Nutrição, Departamento de Fisiologia, Universidade Federal de São PauloSão Paulo, Brazil
| | - Suzete M Cerutti
- Setor de Morfofisiologia e Patologia, Departamento de Ciências Biológicas, Universidade Federal de São PauloDiadema, Brazil
| | - Lila M Oyama
- Disciplina de Fisiologia da Nutrição, Departamento de Fisiologia, Universidade Federal de São PauloSão Paulo, Brazil
| | - Mônica M Telles
- Disciplina de Fisiologia da Nutrição, Departamento de Fisiologia, Universidade Federal de São PauloSão Paulo, Brazil.,Setor de Morfofisiologia e Patologia, Departamento de Ciências Biológicas, Universidade Federal de São PauloDiadema, Brazil
| | - Eliane B Ribeiro
- Disciplina de Fisiologia da Nutrição, Departamento de Fisiologia, Universidade Federal de São PauloSão Paulo, Brazil
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Banin RM, Hirata BKS, Andrade IS, Zemdegs JCS, Clemente APG, Dornellas APS, Boldarine VT, Estadella D, Albuquerque KT, Oyama LM, Ribeiro EB, Telles MM. Beneficial effects of Ginkgo biloba extract on insulin signaling cascade, dyslipidemia, and body adiposity of diet-induced obese rats. ACTA ACUST UNITED AC 2014; 47:780-8. [PMID: 25075573 PMCID: PMC4143206 DOI: 10.1590/1414-431x20142983] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 04/14/2014] [Indexed: 11/21/2022]
Abstract
Ginkgo biloba extract (GbE) has been indicated as an efficient
medicine for the treatment of diabetes mellitus type 2. It remains unclear if its
effects are due to an improvement of the insulin signaling cascade, especially in
obese subjects. The aim of the present study was to evaluate the effect of GbE on
insulin tolerance, food intake, body adiposity, lipid profile, fasting insulin, and
muscle levels of insulin receptor substrate 1 (IRS-1), protein tyrosine phosphatase
1B (PTP-1B), and protein kinase B (Akt), as well as Akt phosphorylation, in
diet-induced obese rats. Rats were fed with a high-fat diet (HFD) or a normal fat
diet (NFD) for 8 weeks. After that, the HFD group was divided into two groups: rats
gavaged with a saline vehicle (HFD+V), and rats gavaged with 500 mg/kg of GbE diluted
in the saline vehicle (HFD+Gb). NFD rats were gavaged with the saline vehicle only.
At the end of the treatment, the rats were anesthetized, insulin was injected into
the portal vein, and after 90s, the gastrocnemius muscle was removed. The
quantification of IRS-1, Akt, and Akt phosphorylation was performed using Western
blotting. Serum levels of fasting insulin and glucose, triacylglycerols and total
cholesterol, and LDL and HDL fractions were measured. An insulin tolerance test was
also performed. Ingestion of a hyperlipidic diet promoted loss of insulin sensitivity
and also resulted in a significant increase in body adiposity, plasma
triacylglycerol, and glucose levels. In addition, GbE treatment significantly reduced
food intake and body adiposity while it protected against hyperglycemia and
dyslipidemia in diet-induced obesity rats. It also enhanced insulin sensitivity in
comparison to HFD+V rats, while it restored insulin-induced Akt phosphorylation,
increased IRS-1, and reduced PTP-1B levels in gastrocnemius muscle. The present
findings suggest that G. biloba might be efficient in preventing and
treating obesity-induced insulin signaling impairment.
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Affiliation(s)
- R M Banin
- Departamento de Ciências Biológicas, Universidade Federal de São Paulo, Diadema, SP, Brasil
| | - B K S Hirata
- Departamento de Ciências Biológicas, Universidade Federal de São Paulo, Diadema, SP, Brasil
| | - I S Andrade
- Disciplina de Fisiologia da Nutrição, Departamento de Fisiologia, Universidade Federal de São Paulo, São Paulo, SP, Brasil
| | - J C S Zemdegs
- Disciplina de Fisiologia da Nutrição, Departamento de Fisiologia, Universidade Federal de São Paulo, São Paulo, SP, Brasil
| | - A P G Clemente
- Faculdade de Nutrição, Universidade Federal de Alagoas, Maceió, AL, Brasil
| | - A P S Dornellas
- Disciplina de Fisiologia da Nutrição, Departamento de Fisiologia, Universidade Federal de São Paulo, São Paulo, SP, Brasil
| | - V T Boldarine
- Disciplina de Fisiologia da Nutrição, Departamento de Fisiologia, Universidade Federal de São Paulo, São Paulo, SP, Brasil
| | - D Estadella
- Departamento de Biociências, Universidade Federal de São Paulo, Baixada Santista, SP, Brasil
| | - K T Albuquerque
- Curso de Nutrição, Universidade Federal do Rio de Janeiro, Macaé, RJ, Brasil
| | - L M Oyama
- Disciplina de Fisiologia da Nutrição, Departamento de Fisiologia, Universidade Federal de São Paulo, São Paulo, SP, Brasil
| | - E B Ribeiro
- Disciplina de Fisiologia da Nutrição, Departamento de Fisiologia, Universidade Federal de São Paulo, São Paulo, SP, Brasil
| | - M M Telles
- Departamento de Ciências Biológicas, Universidade Federal de São Paulo, Diadema, SP, Brasil
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de Sousa IF, de Souza AP, Andrade IS, Boldarine VT, Nascimento CMO, Oyama LM, Telles MM, Ribeiro EB. Effect of fish oil intake on glucose levels in rat prefrontal cortex, as measured by microdialysis. Lipids Health Dis 2013; 12:188. [PMID: 24369745 PMCID: PMC3880162 DOI: 10.1186/1476-511x-12-188] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Accepted: 12/21/2013] [Indexed: 01/26/2023] Open
Abstract
Background Brain glucose sensing may contribute to energy homeostasis control. The prefrontal cortex (PFC) participates in the hedonic component of feeding control. As high-fat diets may disrupt energy homeostasis, we evaluated in male Wistar rats whether intake of high-fat fish-oil diet modified cortical glucose extracellular levels and the feeding induced by intracerebroventricular glucose or PFC glucoprivation. Methods Glucose levels in PFC microdialysates were measured before and after a 30-min meal. Food intake was measured in animals receiving intracerebroventricular glucose followed, 30-min. later, by 2-deoxy-D-glucose injected into the PFC. Results The fish-oil group showed normal body weight and serum insulin while fat pads weight and glucose levels were increased. Baseline PFC glucose and 30-min. carbohydrates intake were similar between the groups. Feeding-induced PFC glucose levels increased earlier and more pronouncedly in fish-oil than in control rats. Intracerebroventricular glucose inhibited feeding consistently in the control but not in the fish-oil group. Local PFC glucoprivation with 2-DG attenuated glucose-induced hypophagia. Conclusions The present experiments have shown that, following food intake, more glucose reached the prefrontal cortex of the rats fed the high-fat fish-oil diet than of the rats fed the control diet. However, when administered directly into the lateral cerebral ventricle, glucose was able to consistently inhibit feeding only in the control rats. The findings indicate that, an impairment of glucose transport into the brain does not contribute to the disturbances induced by the high-fat fish-oil feeding.
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Affiliation(s)
| | | | | | | | | | | | | | - Eliane B Ribeiro
- Departamento de Fisiologia, Universidade Federal de São Paulo (Unifesp), Rua Botucatu, n° 862 - 2° andar, Vila Clementino, São Paulo, SP 04023-062, Brazil.
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Iuras A, Telles MM, Andrade IS, Santos GMS, Oyama LM, Nascimento CMO, Silveira VLF, Ribeiro EB. L-arginine abolishes the hypothalamic serotonergic activation induced by central interleukin-1β administration to normal rats. J Neuroinflammation 2013; 10:147. [PMID: 24314273 PMCID: PMC3866599 DOI: 10.1186/1742-2094-10-147] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Accepted: 11/22/2013] [Indexed: 11/10/2022] Open
Abstract
IL-1β-induced anorexia may depend on interactions of the cytokine with neuropeptides and neurotransmitters of the central nervous system control of energy balance and serotonin is likely to be one catabolic mediator targeted by IL-1β. In the complex interplay involved in feeding modulation, nitric oxide has been ascribed a stimulatory action, which could be of significance in counteracting IL-1β effects. The present study aims to explore the participation of the nitric oxide and the serotonin systems on the central mechanisms induced by IL-1β and the relevance of their putative interactions to IL-1β hypophagia in normal rats. Serotonin levels were determined in microdialysates of the ventromedial hypothalamus after a single intracerebroventricular injection of 10 ng of IL-1β , with or without the pre-injection of 20 μg of the nitric oxide precursor L-arginine. IL-1β significantly stimulated hypothalamic serotonin extracellular levels, with a peak variation of 130 ±37% above baseline. IL- 1β also reduced the 4-h and the 24-h food intakes (by 23% and 58%, respectively). The IL-1β-induced serotonergic activation was abolished by the pre-injection of L-arginine while the hypophagic effect was unaffected. The data showed that one central effect of IL-1β is serotonergic stimulation in the ventromedial hypothalamus, an action inhibited by nitric oxide activity. It is suggested that, although serotonin participates in IL-1β anorexia, other mechanisms recruited by IL-1β in normal rats are able to override the absence of the serotonergic hypophagic influence.
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Affiliation(s)
| | | | | | | | | | | | | | - Eliane B Ribeiro
- Department of Physiology, Universidade Federal de São Paulo, Rua Botucatu, 862 - 2º andar - Vila Clementino, São Paulo, SP 04023-060, Brazil.
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Pedroso AP, Watanabe RLH, Albuquerque KT, Telles MM, Andrade MCC, Perez JD, Sakata MM, Lima ML, Estadella D, Nascimento CMO, Oyama LM, Rosa JC, Casarini DE, Ribeiro EB. Proteomic profiling of the rat hypothalamus. Proteome Sci 2012; 10:26. [PMID: 22519962 PMCID: PMC3441799 DOI: 10.1186/1477-5956-10-26] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Accepted: 04/20/2012] [Indexed: 11/10/2022] Open
Abstract
Background The hypothalamus plays a pivotal role in numerous mechanisms highly relevant to the maintenance of body homeostasis, such as the control of food intake and energy expenditure. Impairment of these mechanisms has been associated with the metabolic disturbances involved in the pathogenesis of obesity. Since rodent species constitute important models for metabolism studies and the rat hypothalamus is poorly characterized by proteomic strategies, we performed experiments aimed at constructing a two-dimensional gel electrophoresis (2-DE) profile of rat hypothalamus proteins. Results As a first step, we established the best conditions for tissue collection and protein extraction, quantification and separation. The extraction buffer composition selected for proteome characterization of rat hypothalamus was urea 7 M, thiourea 2 M, CHAPS 4%, Triton X-100 0.5%, followed by a precipitation step with chloroform/methanol. Two-dimensional (2-D) gels of hypothalamic extracts from four-month-old rats were analyzed; the protein spots were digested and identified by using tandem mass spectrometry and database query using the protein search engine MASCOT. Eighty-six hypothalamic proteins were identified, the majority of which were classified as participating in metabolic processes, consistent with the finding of a large number of proteins with catalytic activity. Genes encoding proteins identified in this study have been related to obesity development. Conclusion The present results indicate that the 2-DE technique will be useful for nutritional studies focusing on hypothalamic proteins. The data presented herein will serve as a reference database for studies testing the effects of dietary manipulations on hypothalamic proteome. We trust that these experiments will lead to important knowledge on protein targets of nutritional variables potentially able to affect the complex central nervous system control of energy homeostasis.
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Affiliation(s)
- Amanda P Pedroso
- Department of Physiology, Division of Nutrition Physiology, Universidade Federal de São Paulo, UNIFESP, São Paulo, SP, Brazil.
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Watanabe RLH, Andrade IS, Telles MM, Albuquerque KT, Nascimento CMO, Oyama LM, Casarini DE, Ribeiro EB. Long-term consumption of fish oil-enriched diet impairs serotonin hypophagia in rats. Cell Mol Neurobiol 2010; 30:1025-33. [PMID: 20526668 DOI: 10.1007/s10571-010-9533-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2010] [Accepted: 05/14/2010] [Indexed: 11/28/2022]
Abstract
Hypothalamic serotonin inhibits food intake and stimulates energy expenditure. High-fat feeding is obesogenic, but the role of polyunsaturated fats is not well understood. This study examined the influence of different high-PUFA diets on serotonin-induced hypophagia, hypothalamic serotonin turnover, and hypothalamic protein levels of serotonin transporter (ST), and SR-1B and SR-2C receptors. Male Wistar rats received for 9 weeks from weaning a diet high in either soy oil or fish oil or low fat (control diet). Throughout 9 weeks, daily intake of fat diets decreased such that energy intake was similar to that of the control diet. However, the fish group developed heavier retroperitoneal and epididymal fat depots. After 12 h of either 200 or 300 μg intracerebroventricular serotonin, food intake was significantly inhibited in control group (21-25%) and soy group (37-39%) but not in the fish group. Serotonin turnover was significantly lower in the fish group than in both the control group (-13%) and the soy group (-18%). SR-2C levels of fish group were lower than those of control group (50%, P = 0.02) and soy group (37%, P = 0.09). ST levels tended to decrease in the fish group in comparison to the control group (16%, P = 0.339) and the soy group (21%, P = 0.161). Thus, unlike the soy-oil diet, the fish-oil diet decreased hypothalamic serotonin turnover and SR-2C levels and abolished serotonin-induced hypophagia. Fish-diet rats were potentially hypophagic, suggesting that, at least up to this point in its course, the serotonergic impairment was either compensated by other factors or not of a sufficient extent to affect feeding. That fat pad weight increased in the absence of hyperphagia indicates that energy expenditure was affected by the serotonergic hypofunction.
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Affiliation(s)
- Regina L H Watanabe
- Departamento de Fisiologia, Universidade Federal de São Paulo, Rua Botucatu, São Paulo, SP, Brazil
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Sardinha FLC, Telles MM, Albuquerque KT, Oyama LM, Guimarães PAMP, Santos OFP, Ribeiro EB. Gender difference in the effect of intrauterine malnutrition on the central anorexigenic action of insulin in adult rats. Nutrition 2006; 22:1152-61. [PMID: 17029904 DOI: 10.1016/j.nut.2006.07.002] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2005] [Revised: 07/05/2006] [Accepted: 07/09/2006] [Indexed: 10/24/2022]
Abstract
OBJECTIVE We evaluated whether insulin hypophagia and hypothalamic signaling are affected in adult rats exposed to intrauterine undernutrition. METHODS Pregnant rats ate ad libitum throughout pregnancy and lactation (control, C) or 50% of control intake in the first 2 wk of pregnancy (restricted, R). Four-month-old C and R progeny received insulin or vehicle intracerebroventricular injections for evaluation of 24-h food intake, hypothalamic insulin receptor (IR), and IR substrate-1 (IRS-1) protein content and tyrosine phosphorylation, pp185 phosphorylation, and IRS-1 association with phosphatidylinositol 3-kinase (PI3-K). RESULTS With respect to males, R males had normal body composition and insulin-induced hypophagia. IR protein levels were lower but IR phosphorylation was higher in R than in C males. IRS-1 levels and phosphorylation were similar between C and R males, insulin stimulated an IRS-1/PI3-K association in C but not in R males, and pp185 phosphorylation was higher in R than in C males. For females, body fat and serum leptin were elevated in R females. Insulin inhibited food intake in C but not in R females. Insulin-induced IR phosphorylation and protein levels of IR and IRS-1 were higher in R than in C females. However, IRS-1 and pp185 phosphorylation and IRS-1/PI3-K association were significantly stimulated by insulin in C but not in R females. CONCLUSIONS Female adult rats exposed to intrauterine undernutrition had increased adiposity, marked impairment of hypothalamic insulin signaling, and loss of insulin-induced hypophagia. These disturbances were less severe or even absent in male progeny. The findings show that female progeny are more susceptible than their male siblings to the effects of maternal malnutrition.
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Affiliation(s)
- Fátima L C Sardinha
- Department of Physiology, Division of Nutrition Physiology, Federal University of São Paulo-UNIFESP, São Paulo, Brazil
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Albuquerque KT, Sardinha FLC, Telles MM, Watanabe RLH, Nascimento CMO, Tavares do Carmo MG, Ribeiro EB. Intake of trans fatty acid–rich hydrogenated fat during pregnancy and lactation inhibits the hypophagic effect of central insulin in the adult offspring. Nutrition 2006; 22:820-9. [PMID: 16815496 DOI: 10.1016/j.nut.2006.04.009] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2005] [Revised: 03/22/2006] [Accepted: 04/20/2006] [Indexed: 11/24/2022]
Abstract
OBJECTIVE Using rats we examined whether maternal intake of hydrogenated fat rich in trans fatty acids affects brain fatty acid profile, hypothalamic content of insulin receptor and insulin receptor substrate-1 proteins, and the hypophagic effect of centrally administered insulin in 3-mo-old male progeny. METHODS Throughout pregnancy and lactation, Wistar rats ate isocaloric/normolipidic diets with soybean oil (control) or soybean oil-derived hydrogenated fat (trans diet) as a fat source. Upon weaning, the trans offspring continued on the trans diet (trans group) or were switched to a control diet (trans-control group). RESULTS Compared with control rats, trans rats had lower brain levels of eicosapentaenoic acid. Compared with trans rats, trans-control rats had increased levels of total polyunsaturated fatty acids and arachidonic acid and decreased levels of trans fatty acids, saturated fatty acids, and monounsaturated fatty acids. Insulin receptor and insulin receptor substrate-1 levels were significantly lower (44% and 38%, respectively) in trans than in control rats. In trans-control rats, insulin receptor was 26% lower (P < 0.05), whereas insulin receptor substrate-1 was 50% lower, than in control rats. Insulin decreased 24-h feeding in control (27%) and trans (38%) rats but failed to do so in trans-control rats. The latter group had increased serum glucose levels. CONCLUSIONS The data suggest that the early (intrauterine/perinatal) exposure to hydrogenated fat rich in trans fatty acids programmed the hypothalamic feeding control mechanisms. As young adults, only trans-control animals showed loss of insulin-induced hypophagia, indicating that the mismatch between early and later nutritional environments was relevant. However, the trans group also showed signs of altered appetite signaling mechanisms, suggesting that the early adaptations may have deleterious consequences later in life.
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Affiliation(s)
- Kelse T Albuquerque
- Department of Physiology, Division of Nutrition Physiology, Federal University of São Paulo (UNIFESP), São Paulo, Brazil
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Carvalheira JBC, Ribeiro EB, Araújo EP, Guimarães RB, Telles MM, Torsoni M, Gontijo JAR, Velloso LA, Saad MJA. Selective impairment of insulin signalling in the hypothalamus of obese Zucker rats. Diabetologia 2003; 46:1629-40. [PMID: 14600817 DOI: 10.1007/s00125-003-1246-x] [Citation(s) in RCA: 119] [Impact Index Per Article: 5.7] [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: 04/10/2003] [Revised: 08/04/2003] [Indexed: 02/07/2023]
Abstract
AIM/HYPOTHESIS By acting in the brain, insulin suppresses food intake. However, little is known with regard to insulin signalling in the hypothalamus in insulin-resistant states. METHODS Western blotting, immunohistochemistry and polymerase chain reaction assays were combined to compare in vivo hypothalamic insulin signalling through the PI3-kinase and MAP kinase pathways between lean and obese Zucker rats. RESULTS Intracerebroventricular insulin infusion reduced food intake in lean rats to a greater extent than that observed in obese rats, and pre-treatment with PI3-kinase inhibitors prevented insulin-induced anorexia. The relative abundance of IRS-2 was considerably higher than that of IRS-1 in hypothalamus of both lean and obese rats. Insulin-stimulated phosphorylation of IR, IRS-1/2, the associations of PI 3-kinase to IRS-1/2 and phosphorylation of Akt in hypothalamus were decreased in obese rats compared to lean rats. These effects seem to be mediated by increased phosphoserine content of IR, IRS-1/2 and decreased protein levels of IRS-1/2 in obese rats. In contrast, insulin stimulated the phosphorylation of MAP kinase equally in lean and obese rats. CONCLUSION/INTERPRETATION This study provides direct measurements of insulin signalling in hypothalamus, and documents selective resistance to insulin signalling in hypothalamus of Zucker rats. These findings provide support for the hypothesis that insulin could have anti-obesity actions mediated by the PI3-kinase pathway, and that impaired insulin signalling in hypothalamus could play a role in the development of obesity in this animal model of insulin-resistance.
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Affiliation(s)
- J B C Carvalheira
- Departamento de Clínica Médica, FCM, Universidade Estadual de Campinas (UNICAMP), 13081-970, Campinas, SP, Brasil
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Guimarães RB, Telles MM, Coelho VBO, Mori RCT, Nascimento CMO, Ribeiro EB. Adrenalectomy abolishes the food-induced hypothalamic serotonin release in both normal and monosodium glutamate-obese rats. Brain Res Bull 2002; 58:363-9. [PMID: 12183012 DOI: 10.1016/s0361-9230(02)00799-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Corticosteroids influence energy homeostasis through centrally-mediated stimulation of energy intake and inhibition of expenditure, while central serotonin (5-HT) has opposite effects. Both serotonergic dysfunction and high glucocorticoid levels may be relevant in obesity. The neurotoxin monosodium glutamate (MSG) induces a non-hyperphagic and hypometabolic obesity with hypercorticosteronemia. We investigated the influence of corticosterone levels on the serotonergic system of MSG-obese and control rats. Applying microdialysis, we found a similar feeding-induced stimulation of serotonin release in the lateral hypothalamus (LH) in sham-adrenalectomized control and MSG rats. The concomitant serum corticosterone variations were markedly distinct between them, in that an increase occurred in the control group, while the initially high levels of the MSG rats decreased with feeding. It is suggested that this lowering of corticosterone prevented a higher serotonergic activation, which would lead to a higher meal-induced thermogenesis and a better adequation of the caloric intake to a low metabolism. Adrenalectomy completely abolished the feeding-evoked serotonergic stimulation in both groups. This observation demonstrates that glucocorticoids are necessary for food intake to acutely stimulate 5-HT release and indicates that serotonergic activity in the LH is not likely to participate in the adrenalectomy-induced attenuation of the MSG-obesity.
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Affiliation(s)
- Regina B Guimarães
- Department of Physiology, Federal University of São Paulo, São Paulo, Brazil
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