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Exogenous Melatonin Alleviates Skeletal Muscle Wasting by Regulating Hypothalamic Neuropeptides Expression in Endotoxemia Rats. Neurochem Res 2022; 47:885-896. [PMID: 35061163 PMCID: PMC8891201 DOI: 10.1007/s11064-021-03489-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 11/07/2021] [Accepted: 11/12/2021] [Indexed: 10/25/2022]
Abstract
To investigate whether exogenous melatonin (MLT) could alleviate skeletal muscle wasting by regulating hypothalamic neuropeptides expression. Adult male Sprague Dawley rats were intraperitoneally injected with lipopolysaccharide (LPS) (10 mg/kg), followed by MLT (30 mg/kg/day) or saline for 3 days. Hypothalamic tissues and skeletal muscle were obtained on day 3. Skeletal muscle wasting was measured by the mRNA expression of two E3 ubiquitin ligases, muscle atrophy F-box and muscle ring finger 1 as well as 3-methylhistidine (3-MH) and tyrosine release. Three hypothalamic neuropeptides (POMC, AgRP, CART) expression were detected in all groups. POMC expression knockdown was achieved by ARC injection of lentiviruses containing shRNA against POMC. Two weeks after ARC viruses injection, rats were i.p. injected with LPS (10 mg/kg) followed by MLT (30 mg/kg/day) or saline for 3 days. Brain tissues were harvested for immunostaining. In septic rats, 3-MH, tyrosine release and muscle atrophic gene expression were significantly decreased in MLT treated group. POMC and CART expression were lower while AgRP expression was higher in MLT treated group. Furthermore, in septic rats treated with MLT, muscle wasting in those with lower expression of neuropeptide POMC did not differ from those with normal POMC expression. Exogenous MLT could alleviate skeletal muscle wasting in septic rats by regulating hypothalamic neuropeptides.
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Kravchychyn ACP, Campos RMDS, Oliveira E Silva L, Ferreira YAM, Corgosinho FC, Masquio DCL, Vicente SEDCF, Oyama LM, Tock L, de Mello MT, Tufik S, Thivel D, Dâmaso AR. Adipocytokine and appetite-regulating hormone response to weight loss in adolescents with obesity: Impact of weight loss magnitude. Nutrition 2021; 87-88:111188. [PMID: 33773406 DOI: 10.1016/j.nut.2021.111188] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 01/30/2021] [Accepted: 02/01/2021] [Indexed: 12/20/2022]
Abstract
OBJECTIVE The aim of this study was to investigate the association between the magnitude of weight loss (WL) and serum concentrations of the main adipocytokines and appetite-regulating hormones in adolescents with obesity. METHODS After completion of informed consent,108 adolescents with obesity (14-19 y of age; postpubertal) were submitted to clinical, nutritional, psychological, physical exercise, and physiotherapy support for 1 y. Body composition (BC) and plasma levels of neuropeptides (neuropeptide Y [NPY], agouti-related peptide [AgRP], and α-melanocyte-stimulating hormone [α-MSH]) and leptin were measured at baseline and post-intervention. RESULTS After therapy, adolescents who lost <10% body weight and <10% body weight (were compared. Both groups presented improvements in BC and reduced leptin. The Δα-MSH, Δα-MSH/AgRP ratio, and Δα-MSH/NPY ratio were lower and AgRP and NPY variations were higher in the low weight loss group. The leptin concentration was close to normal in the high weight loss only. The ΔWeight, Δα-MSH and Δleptin were associated with body fat loss by multiple linear regressions for all samples. CONCLUSION Weight loss >10% seems to reverse obesity-induced hyperleptinemia while stabilizing the neuropeptides that control appetite in adolescents with obesity. We were able to produce a prognostic mathematical model to predict body fat loss using weight, leptin, and α-MSH variations.
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Affiliation(s)
| | | | - Luciana Oliveira E Silva
- Postgraduate Program of Nutrition, Federal University of Sao Paulo; Paulista Medicine School, Sao Paulo, Brazil; Department of Psychobiology, Universidade Federal de São Paulo(UNIFESP), Sao Paulo, Brazil
| | | | | | | | | | - Lila Missae Oyama
- Postgraduate Program of Nutrition, Federal University of Sao Paulo; Paulista Medicine School, Sao Paulo, Brazil
| | - Lian Tock
- Postgraduate Program of Nutrition, Federal University of Sao Paulo; Paulista Medicine School, Sao Paulo, Brazil
| | - Marco Túlio de Mello
- School of Physical Education, Physiotherapy and Occupational Therapy, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Sérgio Tufik
- Department of Psychobiology, Universidade Federal de São Paulo(UNIFESP), Sao Paulo, Brazil
| | - David Thivel
- Clermont Auvergne University, CRNH Auvergne, France
| | - Ana Raimunda Dâmaso
- Postgraduate Program of Nutrition, Federal University of Sao Paulo; Paulista Medicine School, Sao Paulo, Brazil
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Farias G, Netto BDM, Boritza KC, Bettini SC, Dâmaso AR, de Freitas ACT. Mechanisms of sustained long-term weight loss after RYGB: α-MSH is a key factor. Neuropeptides 2018; 69:60-65. [PMID: 29685637 DOI: 10.1016/j.npep.2018.04.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 03/09/2018] [Accepted: 04/12/2018] [Indexed: 02/07/2023]
Affiliation(s)
- Gisele Farias
- Surgical Clinic Post Graduate Program, Department of Surgery, Hospital de Clínicas - Universidade Federal do Paraná, UFPR, Surgical Clinic Post Graduate Program, Curitiba, PR, Brazil.
| | - Bárbara Dal Molin Netto
- Nutrition Post Graduate Program, Universidade Federal de São Paulo, Escola Paulista de Medicina, UNIFESP-EPM, Nutrition Post Graduate Program, São Paulo, SP, Brazil.
| | - Katia Cristina Boritza
- Biochemistry Section, Hospital de Clínicas, Universidade Federal do Paraná, UFPR, Curitiba, PR, Brazil
| | - Solange Cravo Bettini
- Gastrointestinal Surgery Service of Hospital de Clínicas, Universidade Federal do Paraná, UFPR, Curitiba, PR, Brazil
| | - Ana Raimunda Dâmaso
- Nutrition Post Graduate Program, Universidade Federal de São Paulo, Escola Paulista de Medicina, UNIFESP-EPM, Nutrition Post Graduate Program, São Paulo, SP, Brazil
| | - Alexandre Coutinho Teixeira de Freitas
- Surgical Clinic Post Graduate Program, Department of Surgery, Hospital de Clínicas - Universidade Federal do Paraná, UFPR, Surgical Clinic Post Graduate Program, Curitiba, PR, Brazil
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Kravchychyn A, Campos R, Corgosinho F, Masquio D, Vicente S, Ferreira Y, Silva P, Ganen A, Oyama L, Tock L, de Mello M, Tufik S, Dâmaso A. The Long-Term Impact of High Levels of Alpha-Melanocyte-Stimulating Hormone in Energy Balance Among Obese Adolescents. ANNALS OF NUTRITION AND METABOLISM 2018; 72:279-286. [DOI: 10.1159/000488005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2017] [Accepted: 02/25/2018] [Indexed: 12/18/2022]
Abstract
Background: Deregulation of orexigenic and anorexigenic pathways occurs among adolescents with obesity. Alpha-melanocyte-stimulating hormone (α-MSH) is a key catabolic mediator of energy homeostasis and an important anorexigenic neuropeptide in the control of energy balance and thermogenesis. However, it was not well explored if α-MSH can modulate long-term weight loss therapy responses in a dependent manner according to its concentration. Our hypothesis is that a high α-MSH concentration at baseline promotes better modulation of anorexigenic/orexigenic pathways in obese adolescents. Methods: One hundred ten post-pubertal obese adolescents (body mass index >95th percentile) were submitted to 1 year of interdisciplinary therapy (clinical, nutritional, psychological, physical exercise, and physiotherapy support). Body composition and plasma levels of α-MSH, neuropeptide Y (NPY), melanin-concentrating hormone, and agouti-related peptide (AgRP) were measured before and after therapy. The volunteers were grouped on the basis of Tertiles of α-MSH concentration: Low (<0.75 ng/mL), Medium (≤0.76 to ≥1.57 ng/mL), and High (>1.57 ng/mL). Significance was set as p < 0.05. Results: The treatment promoted a significant improvement in body adiposity and fat free mass for all groups. It is important to note that only in the high α-MSH group, a significant increase of the α-MSH/NPY ratio and decrease NPY/AgRP ratio post treatment were observed. Conclusion: The high α-MSH concentration promotes better modulation of anorexigenic/orexigenic pathways in obese adolescents following long-term weight loss therapy and this is important in clinical practice.
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Pilot Study Measuring the Novel Satiety Hormone, Pro-Uroguanylin, in Adolescents With and Without Obesity. J Pediatr Gastroenterol Nutr 2018; 66:489-495. [PMID: 29112082 PMCID: PMC5825243 DOI: 10.1097/mpg.0000000000001796] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Disruption of satiety signaling may lead to increased caloric intake and obesity. Uroguanylin, the intestinal hormone, travels as a precursor to the central nervous system where it activates guanylyl cyclase C and stimulates pro-satiety neurons. Rodent studies have demonstrated that guanylyl cyclase C-knockout mice overeat and have increased weight gain versus wild-type mice and hyper-caloric obesity diminishes uroguanylin expression. We measured circulating plasma pro-uroguanylin, along with other gastrointestinal peptides and inflammatory markers, in human adolescents with and without obesity, as a pilot study. We hypothesized that adolescents with obesity would have less circulating pro-uroguanylin than adolescents without obesity have. METHODS We recruited 24 adolescents (age 14-17 years) with and without obesity (body mass index >95% or body mass index <95%) and measured plasma pro-uroguanylin at fasting and successive time points after a meal. We measured 3 other satiety hormones and 2 inflammatory markers to characterize overall satiety signaling and highlight any link between uroguanylin and inflammation. RESULTS Female adolescents with obesity had lower circulating pro-uroguanylin levels than female adolescents without obesity; we observed no difference in males. Other measured gastrointestinal peptides varied in their differences between cohorts. Inflammatory markers were higher in female participants with obesity. CONCLUSIONS In adolescents with and without obesity, we can measure circulating pro-uroguanylin levels. In female adolescents without obesity, levels are particularly higher. Pro-uroguanylin secretion patterns differ from other circulating gastrointestinal peptides. In female adolescents with obesity, inflammation correlates with decreased pro-uroguanylin levels.
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Cheng M, Gao T, Xi F, Cao C, Chen Y, Zhao C, Li Q, Yu W. Dexmedetomidine ameliorates muscle wasting and attenuates the alteration of hypothalamic neuropeptides and inflammation in endotoxemic rats. PLoS One 2017; 12:e0174894. [PMID: 28358856 PMCID: PMC5373637 DOI: 10.1371/journal.pone.0174894] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Accepted: 03/16/2017] [Indexed: 12/02/2022] Open
Abstract
Dexmedetomidine is generally used for sedaton in critically ill, it could shorten duration of mechanical ventilation, ICU stay and lower basic metabolism. However, the exact mechanism of these positive effects remains unkown. Here we investigated the hypothesis that dexmedetomidine could ameliorate muscle wasting in endotoxemic rats and whether it was related to hypothalamic neuropeptides alteration and inflammation. Fourty-eight adult male Sprague–Dawley rats were intraperitoneally injected with lipopolysaccharide (LPS) (5 mg/kg) or saline, followed by 50 μg/kg dexmedetomidine or saline administration via the femoral vein catheter (infusion at 5 μg·kg-1·hr-1). Twenty-four hours after injection, hypothalamus tissues and skeletal muscle were obtained. Muscle wasting was measured by the mRNA expression of two E3 ubiquitin ligases, muscle atrophy F-box (MAFbx) and muscle ring finger 1 (MuRF-1) as well as 3-methylhistidine (3-MH) and tyrosine release. Hypothalamic inflammatory markers and neuropeptides expression were also detected in all four groups. Results showed that LPS administration led to significant increase in hypothalamic inflammation together with muscle wasting. Increased hypothalamic neuropeptides, proopiomelanocortin (POMC), cocaine and amphetamine-related transcript (CART) and neuropeptides Y (NPY) and decreased agouti-related protein (AgRP) were also observed. Meanwhile dexmedetomidine administration ameliorated muscle wasting, hypothalamic inflammation and modulated the alteration of neuropeptides, POMC, CART and AgRP, in endotoxemic rats. In conclusion, dexmedetomidine could alleviate muscle wasting in endotoxemic rats, and it could also attenuate the alteration of hypothalamic neuropeptides and reduce hypothalamic inflammation.
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Affiliation(s)
- Minhua Cheng
- Medical School of Nanjing University,Nanjing, Jiangsu, P.R China
| | - Tao Gao
- Medical School of Nanjing University,Nanjing, Jiangsu, P.R China
- Institute of General Surgery Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, P.R China
| | - Fengchan Xi
- Institute of General Surgery Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, P.R China
| | - Chun Cao
- Medical School of Nanjing University,Nanjing, Jiangsu, P.R China
| | - Yan Chen
- Medical School of Nanjing University,Nanjing, Jiangsu, P.R China
| | - Chenyan Zhao
- Medical School of Nanjing University,Nanjing, Jiangsu, P.R China
| | - Qiurong Li
- Institute of General Surgery Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, P.R China
| | - Wenkui Yu
- Medical School of Nanjing University,Nanjing, Jiangsu, P.R China
- Institute of General Surgery Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, P.R China
- * E-mail:
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Fatsini E, Bautista R, Manchado M, Duncan NJ. Transcriptomic profiles of the upper olfactory rosette in cultured and wild Senegalese sole (Solea senegalensis) males. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 2016; 20:125-135. [PMID: 27689822 DOI: 10.1016/j.cbd.2016.09.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Revised: 08/23/2016] [Accepted: 09/02/2016] [Indexed: 12/30/2022]
Abstract
The aims of this study were the characterization of the upper olfactory epithelium of cultured and wild Senegalese sole mature males at histological and transcriptomic (using RNA-Seq) level. No significant differences in tissue structure, cell types and cellular distribution pattern (olfactory sensory neurons) were identified between cultured and wild specimens. Deep transcriptomic analysis showed 2387 transcripts were differentially expressed between cultured and wild groups. A detailed analysis identified the differentially expressed transcripts included some olfactory receptors (OR, TAAR and V2R-like) and transcripts related with the control of reproduction such as the brain aromatase cytochrome P450 and tachykinin-3. Also a wide set of genes related with lipid sensing, metabolism and transport were differentially expressed and these transcripts were often down-regulated in cultured fish. Furthermore, cultured males presented a higher expression of genes related with goblet cells and mucin production that modulates innate and adaptive immune responses. All these changes in gene expression could be explained by different nutritional status and diet preference. The different expression of transcripts related to olfaction, reproduction, nutrient sensing and immune system demonstrate distinct differences in functionalities between cultured and wild soles providing new clues about the sexual dysfunction in this species.
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Affiliation(s)
- E Fatsini
- Institut de Recerca i Tecnología Agroalimentaria (IRTA), Sant Carles de la Ràpita Ctra. de Poble Nou km. 5.5, 43540 Sant Carles de la Ràpita, Tarragona, Spain
| | - R Bautista
- Plataforma Andaluza de Bioinformática, Universidad de Málaga, Edificio de Bioinnovación, C/ Severo Ochoa 34, 29590 Málaga, Spain
| | - M Manchado
- IFAPA Centro El Toruño, Junta de Andalucía, Camino Tiro Pichón s/n, 11500 El Puerto Santa María, Cádiz, Spain.
| | - N J Duncan
- Institut de Recerca i Tecnología Agroalimentaria (IRTA), Sant Carles de la Ràpita Ctra. de Poble Nou km. 5.5, 43540 Sant Carles de la Ràpita, Tarragona, Spain
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Early effects of Roux-en-Y gastric bypass on peptides and hormones involved in the control of energy balance. Eur J Gastroenterol Hepatol 2016; 28:1050-5. [PMID: 27203601 DOI: 10.1097/meg.0000000000000665] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Body weight varies depending on the prevailing direction of environmental pressures; however, physiological factors also play a significant role in the control of body weight. The aim of the present study was to assess the impact of Roux-en-Y gastric bypass (RYGB) on hormones and peptides involved in the control of energy balance and their possible implications in appetite/satiety. METHODS The sample included 39 individuals with extreme obesity (37 women and two men) who underwent RYGB. Anthropometric and biochemical markers were collected before surgery and 6 months after RYGB. RESULTS The BMI decreased from 44.3±6.4 to 31.7±5.7 kg/m (P<0.001) at the sixth month. Percentage of excess weight lost was 63.2±25.0%. Leptin and glucose levels decreased significantly 6 months after RYGB (P<0.001). Interestingly, a significant correlation was confirmed between the anorexigenic gut hormone peptide YY (PYY) and the central anorexigenic mediator α-melanocyte-stimulating hormone after 6 months of RYGB (r=0.35, P=0.004). In contrast, PYY concentrations were correlated negatively with BMI (r=-0.34, P=0.002). CONCLUSION In the present investigation, it was found that there is a relationship between α-melanocyte-stimulating hormone and PYY concentrations, and it supports the role of the PYY to POMC signal in appetite regulation after RYGB.
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Corgosinho FC, Ackel-D'Elia C, Tufik S, Dâmaso AR, de Piano A, Sanches PDL, Campos RMDS, Silva PL, Carnier J, Tock L, Andersen ML, Moreira GA, Pradella-Hallinan M, Oyama LM, de Mello MT. Beneficial Effects of a Multifaceted 1-Year Lifestyle Intervention on Metabolic Abnormalities in Obese Adolescents With and Without Sleep-Disordered Breathing. Metab Syndr Relat Disord 2015; 13:110-8. [DOI: 10.1089/met.2014.0110] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Affiliation(s)
- Flávia Campos Corgosinho
- Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
- Programa de Pós-Graduação em Nutrição, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Carolina Ackel-D'Elia
- Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
- Programa de Pós-Graduação em Nutrição, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Sergio Tufik
- Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
- Departmento de Psicobiologia, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Ana Raimunda Dâmaso
- Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
- Programa de Pós-Graduação em Nutrição, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
- Departamento de Biociências, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
- Departamento Interdisciplinar de Ciências da Saúde, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Aline de Piano
- Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
- Programa de Pós-Graduação em Nutrição, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Priscila de Lima Sanches
- Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
- Programa de Pós-Graduação em Nutrição, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Raquel Munhoz da Silveira Campos
- Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
- Programa de Pós-Graduação em Nutrição, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Patrícia Leão Silva
- Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
- Programa de Pós-Graduação em Nutrição, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - June Carnier
- Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
- Programa de Pós-Graduação em Nutrição, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | | | - Monica Levy Andersen
- Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
- Departmento de Psicobiologia, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Gustavo Antônio Moreira
- Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
- Departmento de Psicobiologia, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Marcia Pradella-Hallinan
- Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
- Departmento de Psicobiologia, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
| | - Lila Missae Oyama
- Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
- Programa de Pós-Graduação em Nutrição, Universidade Federal de São Paulo (UNIFESP), São Paulo, Brazil
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Duan K, Yu W, Lin Z, Tan S, Bai X, Gao T, Xi F, Li N. Endotoxemia-induced muscle wasting is associated with the change of hypothalamic neuropeptides in rats. Neuropeptides 2014; 48:379-86. [PMID: 25459520 DOI: 10.1016/j.npep.2014.10.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Revised: 10/08/2014] [Accepted: 10/09/2014] [Indexed: 11/21/2022]
Abstract
In critical patients, sepsis-induced muscle wasting is considered to be an important contributor to complications and mortality. Previous work mainly focuses on the peripheral molecular mechanism of muscle degradation, however little evidence exists for the role of central nervous system in the process. In the present study, we, for the first time, characterized the relationship between muscle wasting and central neuropeptide changes in a septic model. Thirty-six adult male Sprague-Dawley rats were intraperitoneally injected with lipopolysaccharide (LPS) or saline. Twelve, 24 and 48 hrs after injection, skeletal muscle and hypothalamus tissues were harvested. Muscle wasting was measured by the mRNA expression of two E3 ubiquitin ligases, muscle ring finger 1 (MuRF-1) and muscle atrophy F-box (MAFbx), as well as 3-methyl-histidine (3-MH) and tyrosine release. Hypothalamic neuropeptides and inflammatory marker expressions were also measured in three time points. LPS injection caused an increase expression of MuRF-1 and MAFbx, and a significant higher release of 3-MH and tyrosine. Hypothalamic neuropeptides, proopiomelanocortin (POMC), cocaine- and amphetamine-regulated transcript (CART), agouti-related protein (AgRP) and neuropeptide Y (NPY) presented a dynamic change after LPS injection. Also, hypothalamic inflammatory markers, interleukin-1 β (IL-1β) and tumor necrosis factor α (TNF-α) increased substantially after LPS administration. Importantly, the expressions of POMC, AgRP and CART were well correlated with muscle atrophy gene, MuRF-1 expression. These findings suggest hypothalamic peptides and inflammation may participate in the sepsis-induced muscle wasting, but the exact mechanism needs further study.
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Affiliation(s)
- Kaipeng Duan
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Wenkui Yu
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China.
| | - Zhiliang Lin
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Shanjun Tan
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Xiaowu Bai
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Tao Gao
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Fengchan Xi
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China
| | - Ning Li
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing 210002, China.
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Gonzalez-Campoy JM, Richardson B, Richardson C, Gonzalez-Cameron D, Ebrahim A, Strobel P, Martinez T, Blaha B, Ransom M, Quinonez-Weislow J, Pierson A, Gonzalez Ahumada M. Bariatric endocrinology: principles of medical practice. Int J Endocrinol 2014; 2014:917813. [PMID: 24899894 PMCID: PMC4036612 DOI: 10.1155/2014/917813] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Revised: 03/19/2014] [Accepted: 04/11/2014] [Indexed: 12/11/2022] Open
Abstract
Obesity, is a chronic, biological, preventable, and treatable disease. The accumulation of fat mass causes physical changes (adiposity), metabolic and hormonal changes due to adipose tissue dysfunction (adiposopathy), and psychological changes. Bariatric endocrinology was conceived from the need to address the neuro-endocrinological derangements that are associated with adiposopathy, and from the need to broaden the scope of the management of its complications. In addition to the well-established metabolic complications of overweight and obesity, adiposopathy leads to hyperinsulinemia, hyperleptinemia, hypoadiponectinemia, dysregulation of gut peptides including GLP-1 and ghrelin, the development of an inflammatory milieu, and the strong risk of vascular disease. Therapy for adiposopathy hinges on effectively lowering the ratio of orexigenic to anorexigenic signals reaching the the hypothalamus and other relevant brain regions, favoring a lower caloric intake. Adiposopathy, overweight and obesity should be treated indefinitely with the specific aims to reduce fat mass for the adiposity complications, and to normalize adipose tissue function for the adiposopathic complications. This paper defines the principles of medical practice in bariatric endocrinology-the treatment of overweight and obesity as means to treat adiposopathy and its accompanying metabolic and hormonal derangements.
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Affiliation(s)
- J. Michael Gonzalez-Campoy
- Minnesota Center for Obesity, Metabolism and Endocrinology (MNCOME), 1185 Town Centre Drive, Suite 220, Eagan, MN 55123, USA
| | - Bruce Richardson
- Minnesota Center for Obesity, Metabolism and Endocrinology (MNCOME), 1185 Town Centre Drive, Suite 220, Eagan, MN 55123, USA
| | - Conor Richardson
- Minnesota Center for Obesity, Metabolism and Endocrinology (MNCOME), 1185 Town Centre Drive, Suite 220, Eagan, MN 55123, USA
| | - David Gonzalez-Cameron
- Minnesota Center for Obesity, Metabolism and Endocrinology (MNCOME), 1185 Town Centre Drive, Suite 220, Eagan, MN 55123, USA
| | - Ayesha Ebrahim
- Minnesota Center for Obesity, Metabolism and Endocrinology (MNCOME), 1185 Town Centre Drive, Suite 220, Eagan, MN 55123, USA
| | - Pamela Strobel
- Minnesota Center for Obesity, Metabolism and Endocrinology (MNCOME), 1185 Town Centre Drive, Suite 220, Eagan, MN 55123, USA
| | - Tiphani Martinez
- Minnesota Center for Obesity, Metabolism and Endocrinology (MNCOME), 1185 Town Centre Drive, Suite 220, Eagan, MN 55123, USA
| | - Beth Blaha
- Minnesota Center for Obesity, Metabolism and Endocrinology (MNCOME), 1185 Town Centre Drive, Suite 220, Eagan, MN 55123, USA
| | - Maria Ransom
- Minnesota Center for Obesity, Metabolism and Endocrinology (MNCOME), 1185 Town Centre Drive, Suite 220, Eagan, MN 55123, USA
| | - Jessica Quinonez-Weislow
- Minnesota Center for Obesity, Metabolism and Endocrinology (MNCOME), 1185 Town Centre Drive, Suite 220, Eagan, MN 55123, USA
| | - Andrea Pierson
- Minnesota Center for Obesity, Metabolism and Endocrinology (MNCOME), 1185 Town Centre Drive, Suite 220, Eagan, MN 55123, USA
| | - Miguel Gonzalez Ahumada
- Minnesota Center for Obesity, Metabolism and Endocrinology (MNCOME), 1185 Town Centre Drive, Suite 220, Eagan, MN 55123, USA
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Badshah H, Ullah I, Kim SE, Kim TH, Lee HY, Kim MO. Anthocyanins attenuate body weight gain via modulating neuropeptide Y and GABAB1 receptor in rats hypothalamus. Neuropeptides 2013; 47:347-53. [PMID: 23830691 DOI: 10.1016/j.npep.2013.06.001] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2013] [Revised: 05/10/2013] [Accepted: 06/03/2013] [Indexed: 02/05/2023]
Abstract
Anthocyanins in a variety of plant species have been identified and are known for its hypolipidemic and anti-obesity effects. The effect of anthocyanins extracted from black soybean on body weight and daily food intake in adult rats raised on normal diet were studied. Male Sprague-Dawley rats were daily intra-gastric administered water or anthocyanins 6 mg/kg and 24 mg/kg for 40 days. During this period daily food intake and body weight were measured prior to anthocyanins treatment. These findings showed that anthocyanins treatment resulted in significantly lowered body weight and food intake compared with water treated rats. In addition, anthocyanins dose dependently reduced the adipose tissue size compared with control group. Western blot analysis showed that high dose of anthocyanins treatment significantly reduced the expression of neuropeptide Y (NPY) and increased γ-amino butyric acid receptor (GABAB1R) in hypothalamus. Furthermore, these events were followed by a decreased in expression of GABAB1R downstream signaling molecules protein kinase A-α (PKA) and phosphorylated cAMP-response element binding protein (p-CREB) in hypothalamus. These data support the concept that anthocyanins even in normal circumstances have the capability to reduce body weight and food intake through its modulatory effect on NPY and GABAB1R in hypothalamus. These results suggest that anthocyanins from black soybean seed coat might have a novel role in preventing obesity in rats on normal diet.
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Affiliation(s)
- Haroon Badshah
- Department of Biology, College of Natural Sciences (RINS), Gyeongsang National University, Jinju 660-701, Republic of Korea
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Wei R, Yuan D, Wang T, Zhou C, Lin F, Chen H, Wu H, Yang S, Wang Y, Liu J, Gao Y, Li Z. Characterization, tissue distribution and regulation of agouti-related protein (AgRP) in a cyprinid fish (Schizothorax prenanti). Gene 2013; 527:193-200. [PMID: 23774689 DOI: 10.1016/j.gene.2013.06.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2013] [Revised: 05/31/2013] [Accepted: 06/07/2013] [Indexed: 02/03/2023]
Abstract
Agouti-related protein (AgRP) is an important neuropeptide involved in the regulation of feeding in both mammals and fish. In this study, we have cloned the full-length cDNA sequence for AgRP in a cyprinid fish (Schizothorax prenanti). The AgRP gene, encoding 126-amino acids, was strongly expressed in the brain. The AgRP gene was detected in embryos at developmental stages. Further, its mRNA was detectable in unfertilized eggs. An experiment was conducted to determine the expression profile of AgRP during short-term and long-term fasting of the hypothalamus. The expression level of AgRP in unfed fish was significantly increased at 3 and 4h post-fasting than in fed fish but did not affect AgRP mRNA expression after 14 days fasting. Overall, our results suggest that AgRP is a conserved peptide that might be involved in the regulation of short-term feeding and other physiological function in Schizothorax prenanti.
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Affiliation(s)
- RongBin Wei
- Department of Aquaculture, Sichuan Agricultural University, 46# Xinkang Road, Yaan, China
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14
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Dâmaso AR, de Piano A, Campos RMDS, Corgosinho FC, Siegfried W, Caranti DA, Masquio DCL, Carnier J, Sanches PDL, Leão da Silva P, Nascimento CMO, Oyama LM, Dantas ADA, de Mello MT, Tufik S, Tock L. Multidisciplinary approach to the treatment of obese adolescents: effects on cardiovascular risk factors, inflammatory profile, and neuroendocrine regulation of energy balance. Int J Endocrinol 2013; 2013:541032. [PMID: 24285955 PMCID: PMC3826292 DOI: 10.1155/2013/541032] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Revised: 09/06/2013] [Accepted: 09/09/2013] [Indexed: 12/14/2022] Open
Abstract
The prevention of obesity and health concerns related to body fat is a major challenge worldwide. The aim of this study was to investigate the role of a medically supervised, multidisciplinary approach, on reduction in the prevalence of obesity related comorbidities, inflammatory profile, and neuroendocrine regulation of energy balance in a sample of obese adolescents. A total of 97 postpuberty obese adolescents were enrolled in this study. Body composition, neuropeptides, and adipokines were analysed. The metabolic syndrome was defined by the International Diabetes Federation (IDF). The abdominal ultrasonography was performed to measure visceral, subcutaneous fat and hepatic steatosis. All measures were performed at baseline and after one year of therapy. The multidisciplinary management promoted the control of obesity reducing body fat mass. The prevalence of metabolic syndrome, asthma, nonalcoholic fatty liver disease (NAFLD), binge eating, and hyperleptinemia was reduced. An improvement in the inflammatory profile was demonstrated by an increase in anti-inflammatory adiponectin and reduction in proinflammatory adipokines, plasminogen activator inhibitor-1, interleukin-6 concentrations, and in the Lep/Adipo ratio. Moreover, a reduction in the AgRP and an increase in the alfa-MSH were noted. The multidisciplinary approach not only reduced obesity but also is efficacious in cardiovascular risk factors, inflammatory profile, and neuroendocrine regulation of energy balance.
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Affiliation(s)
- Ana Raimunda Dâmaso
- Department of Biosciences, Universidade Federal de São Paulo (UNIFESP), Rua Silva Jardim, 136 Térreo, Vila Mathias, 11015-020 Santos, SP, Brazil
- Post-Graduate Program of Nutrition, Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), Rua Marselhesa 630, Vila Clementino, 04020-060 São Paulo, SP, Brazil
- *Ana Raimunda Dâmaso: and
| | - Aline de Piano
- Post-Graduate Program of Nutrition, Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), Rua Marselhesa 630, Vila Clementino, 04020-060 São Paulo, SP, Brazil
| | - Raquel Munhoz da Silveira Campos
- Post-Graduate Program of Nutrition, Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), Rua Marselhesa 630, Vila Clementino, 04020-060 São Paulo, SP, Brazil
- *Raquel Munhoz da Silveira Campos:
| | - Flávia Campos Corgosinho
- Post-Graduate Program of Nutrition, Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), Rua Marselhesa 630, Vila Clementino, 04020-060 São Paulo, SP, Brazil
| | - Wolfgang Siegfried
- Obesity Rehabilitation Centre INSULA, Insulaweg, Bischofswiesen, Germany
| | - Danielle Arisa Caranti
- Department of Biosciences, Universidade Federal de São Paulo (UNIFESP), Rua Silva Jardim, 136 Térreo, Vila Mathias, 11015-020 Santos, SP, Brazil
| | - Deborah Cristina Landi Masquio
- Post-Graduate Program of Nutrition, Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), Rua Marselhesa 630, Vila Clementino, 04020-060 São Paulo, SP, Brazil
| | - June Carnier
- Post-Graduate Program of Nutrition, Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), Rua Marselhesa 630, Vila Clementino, 04020-060 São Paulo, SP, Brazil
| | - Priscila de Lima Sanches
- Post-Graduate Program of Nutrition, Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), Rua Marselhesa 630, Vila Clementino, 04020-060 São Paulo, SP, Brazil
| | - Patrícia Leão da Silva
- Post-Graduate Program of Nutrition, Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP), Rua Marselhesa 630, Vila Clementino, 04020-060 São Paulo, SP, Brazil
| | - Cláudia Maria Oller Nascimento
- Department of Physiology, Universidade Federal de São Paulo (UNIFESP), Rua Botucatu 726, Vila Clementino, 04021-001 São Paulo, SP, Brazil
| | - Lila Missae Oyama
- Department of Physiology, Universidade Federal de São Paulo (UNIFESP), Rua Botucatu 726, Vila Clementino, 04021-001 São Paulo, SP, Brazil
| | | | - Marco Túlio de Mello
- Psychobiology Department, Universidade Federal de São Paulo (UNIFESP), Rua Botucatu 726, Vila Clementino, 04021-001 São Paulo, SP, Brazil
| | - Sergio Tufik
- Psychobiology Department, Universidade Federal de São Paulo (UNIFESP), Rua Botucatu 726, Vila Clementino, 04021-001 São Paulo, SP, Brazil
| | - Lian Tock
- Weight Science, Rua Teodoro Sampaio, 744 Cj 98 Jardim America, 05406-000 São Paulo, SP, Brazil
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The role of PAI-1 and adiponectin on the inflammatory state and energy balance in obese adolescents with metabolic syndrome. Inflammation 2012; 35:944-51. [PMID: 22038064 DOI: 10.1007/s10753-011-9397-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Obesity is a chronic inflammatory disease and is considered a risk factor for metabolic syndrome. In this study, 57 obese adolescents with and without metabolic syndrome underwent 1 year of weight loss therapy. At baseline, the metabolic syndrome (MS) patients presented higher values of PAI-1 than the non-metabolic syndrome patients (n-MS). After therapy, significant improvements in anthropometrics and biochemical, inflammatory, and neuroendocrine variables were observed in both groups. However, the n-MS group presented better results than the MS group. Indeed, we found positive correlations in both groups between PAI-1 and neuropeptide Y (NPY) and between PAI-1 and NPY/AgRP. Inflammatory biomarkers may thus play a role in energy balance. The clinical trial registration number is NCT01358773.
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Duarte FO, Sene-Fiorese M, Cheik NC, Maria ASLS, de Aquino AE, Oishi JC, Rossi EA, Garcia de Oliveira Duarte AC, Dâmaso AR. Food restriction and refeeding induces changes in lipid pathways and fat deposition in the adipose and hepatic tissues in rats with diet-induced obesity. Exp Physiol 2012; 97:882-94. [PMID: 22467759 DOI: 10.1113/expphysiol.2011.064121] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The aim of this study was to determine the effects of successive cycles of a moderately restrictive diet and refeeding with a high-fat diet on the metabolism of the adipose and hepatic tissues of obese rats. Rats were assigned to the following groups: a chow diet; a high-fat diet; a moderate caloric restriction; or a moderate caloric restriction plus refeeding. Some animals in each group were given [1-(14)C]triolein intragastrically, while others received an intraperitoneal injection of 3 mCi (3)H(2)O. All animals were killed by decapitation. The retroperitoneal, visceral epididymal and omental white adipose tissues, brown adipose tissue, liver and blood were immediately removed. The lipid uptake from the diet, in vivo rate of lipogenesis, percentage of fat, lipid profile and leptin concentration were analysed. The high-fat diet promoted an increase in fatty liver (P ≤ 0.05), adiposity mass (P ≤ 0.05) and the plasma concentration of leptin (P ≤ 0.05) and a decreased lipid uptake in white adipose tissue depots (P ≤ 0.05) in relation to the chow diet. The moderate caloric restriction did not reverse the changes promoted by the high-fat diet but induced a small decrease in adiposity, which was reversed after refeeding, and the animals maintained a dyslipidaemic profile and high fat deposition in the liver. We can conclude that the high-fat diet and subsequent moderate caloric restriction plus refeeding increased the risks of developing visceral obesity, dyslipidaemia and non-alcoholic fatty liver disease, which suggests that this type of experimental protocol can be used to study mechanisms related to the metabolic syndrome.
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Affiliation(s)
- Fernanda Oliveira Duarte
- Departamento de Educação Física e Motricidade-DEFMH, Universidade Federal de São Carlos-UFSCar Rodovia Washington Luís, Km 235-SP-310, São Carlos-São Paulo-Brasil, CEP: 13565-905.
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Leão da Silva P, de Mello MT, Cheik NC, Sanches PL, Munhoz da Silveira Campos R, Carnier J, Inoue D, do Nascimento CMO, Oyama LM, Tock L, Tufik S, Dâmaso AR. Reduction in the leptin concentration as a predictor of improvement in lung function in obese adolescents. Obes Facts 2012. [PMID: 23207491 DOI: 10.1159/000345840] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVE To assess the effects of weight loss on adipokines, asthma-related symptoms, exercise-induced bronchospasm (EIB) and lung function, and to evaluate the role of leptin and adiponectin levels on lung function after treatment in obese adolescents. METHODS 84 postpubertal obese adolescents were enrolled and distributed in quartiles according to weight loss (low (<2.5 kg), low to moderate (>2.5 and <8 kg), moderate (<8 and <14 kg) and massive (<14 kg)). Body composition was measured by plethysmography, and visceral and subcutaneous fat were detected by ultrasound. Serum levels of adiponectin and leptin were analyzed. Lung function, asthma and EIB were evaluated according to the American Thoracic Society criteria. Patients were submitted to 1 year of interdisciplinary intervention consisting of physiotherapy, medical, nutritional, exercise, and psychological therapy. RESULTS After treatment the moderate and massive weight loss promoted an increase in adiponectin and adiponectin/leptin (A/L) ratio as well as a decrease in leptin levels and a reduction in EIB frequency and asthma-related symptoms. Furthermore, the reduction in leptin levels was a predictor factor to improvement in lung function. CONCLUSION Interdisciplinary therapy was able to decrease EIB and asthma-related symptoms and to improve pro/anti-inflammatory adipokines. Additionally, the leptin concentration was a predictor factor to explain changes in lung function.
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Affiliation(s)
- Patrícia Leão da Silva
- Post Graduate Program of Nutrition, Universidade Federal de São Paulo, São Paulo, Brazil
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18
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da Silva PL, de Mello MT, Cheik NC, Sanches PL, Correia FA, de Piano A, Corgosinho FC, Campos RMDS, do Nascimento CMO, Oyama LM, Tock L, Tufik S, Dâmaso AR. Interdisciplinary therapy improves biomarkers profile and lung function in asthmatic obese adolescents. Pediatr Pulmonol 2012; 47:8-17. [PMID: 22170805 DOI: 10.1002/ppul.21502] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2011] [Accepted: 05/25/2011] [Indexed: 11/10/2022]
Abstract
BACKGROUND The simultaneous rise in the prevalence of asthma and obesity in the world, have demonstrated the importance of the development of treatment strategies. The purpose of this study was to evaluate the short- and long-term results of interdisciplinary therapy on inflammatory biomarkers and lung function in asthmatics obese adolescents. METHODS Seventy-six post-pubertal obese adolescents were recruited, including 50 non-asthmatics [body mass index (BMI), 36 ± 5 kg/m(2) ) and 26 asthmatics (BMI, 39 ± 4 kg/m(2) ). Body composition was measured by plethysmography, and visceral fat was analyzed by ultrasound. Serum levels of adiponectin, leptin, and C-reactive protein (CRP) were analyzed. Asthma and lung function were evaluated according to the American Thoracic Society criteria. Patients were submitted to 1-year weight loss interdisciplinary intervention consisting of medical, nutritional, exercise, and psychological therapy. RESULTS After interdisciplinary intervention, the lung function and pro/anti-inflammatory adipokines improved significantly in both groups. Most importantly, there was an increase in adiponectin [4 (1.86-12.9) to 5.1 (2.48-16)], a reduction in CRP [2,073 (385-9,174) to 1,538 (205-7,083)] and leptin concentrations [59 (29-69) to 33 (9-49)] in the asthmatics patients. Furthermore, it was observed a reduction in asthma severity after treatment. In addition, Δ adiponectin was an independent factor to improve lung function after therapy in both groups. CONCLUSIONS Interdisciplinary therapy resulted in beneficial changes in inflammatory biomarkers profile and lung function in asthmatic and non-asthmatic obese adolescents. Additionally, for the first time we showed that change in adiponectin level was an independent predictor to improve lung function in Brazilian obese adolescents.
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Affiliation(s)
- Patrícia Leão da Silva
- Post Graduate Program of Nutrition, Universidade Federal de São Paulo, São Paulo, Brazil.
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Dâmaso AR, de Piano A, Sanches PL, Corgosinho F, Tock L, Oyama LM, Tock L, do Nascimento CMO, Tufik S, de Mello MT. Hyperleptinemia in obese adolescents deregulates neuropeptides during weight loss. Peptides 2011; 32:1384-91. [PMID: 21641948 DOI: 10.1016/j.peptides.2011.04.025] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2011] [Revised: 04/28/2011] [Accepted: 04/28/2011] [Indexed: 10/18/2022]
Abstract
Leptin has emerged over the past decade as a key hormone not only in energy balance regulation but also in neuroendocrine and inflammatory processes. The aim of the present study was to evaluate whether hyperleptinemia deregulates neuropeptides during weight loss. A total of 86 post-pubertal obese adolescents (with or without hyperleptinemia) participated in one year of interdisciplinary weight loss therapy (clinical, nutritional, psychological and exercise-related). Adipokine and neuropeptide concentrations were measured by ELISA, visceral fat was measured by ultrasound and body composition was measured by pletismography. The hyperleptinemic patients presented a lower alpha-MSH concentration and higher NPY/AgRP ratio while the adiponectin/leptin (A/L) ratio was lower compared with the non-hyperleptinemic group. After therapy, significant improvements in BM, BMI, body fat mass, visceral and subcutaneous fat, HOMA-IR, QUICKI, total cholesterol and triglycerides were observed in both groups. Indeed, we observed significant increases in adiponectin and A/L as well as reductions in leptin and NPY/AgRP ratio in the hyperleptinemic group. In the stepwise multiple linear regression analysis with leptin concentration as the dependent variable, α-MSH and body fat mass (%) were the independent predictors to explain leptin concentration. For the entire group, we found positive correlations between leptinemia and BMI and body fat mass (%) as well as a negative correlation with free fat mass (%) and alpha-MSH. Finally, we verified negative correlations between adiponectin/leptin ratio with total cholesterol and LDL-c, only in hyperleptinemic patients. In conclusion, the hyperleptinemia in obese adolescents deregulates neuropeptides during weight loss.
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Affiliation(s)
- Ana R Dâmaso
- Biosciences Department, Federal University of São Paulo-Paulista Medicine School-UNIFESP-EPM, São Paulo, Brazil.
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Makoundou V, Pataky Z, Bobbioni-Harsch E, Gachoud JP, Golay A. Do obese patients after weight loss become metabolically normal? Obes Facts 2011; 4:218-21. [PMID: 21701238 PMCID: PMC6444611 DOI: 10.1159/000329579] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVE To compare the metabolic cardiovascular risk factors of obese patients after weight loss and 4-year weight loss maintenance afterwards against a matched control group of subjects with a stable body weight and without history of weight loss. METHOD 50 obese non-diabetic subjects in the study group who previously lost 10% or more of their weight and afterwards entered a 4-year weight loss maintenance programme were matched by age, BMI and sex and compared to 50 weight-stable subjects without history of weight loss. The comparison between both groups was done in term of anthropometrical, metabolic and biological characteristics, early atherosclerosis and insulin sensitivity. RESULTS Anthropometrical, metabolic and biological characteristics were similar between the weight loss group and the control matched group. However, insulin sensitivity was still significantly lower in the weight loss than in the matched control group (p = 0.02). Intima media thickness (IMT) also was similar in both groups. We found that lower atherosclerosis measured by IMT at the level of the carotid is associated with better insulin sensitivity (p < 0.05). After the 4-year weight loss maintenance programme, insulin sensitivity improved in the post-weight loss group from 7.9 ± 3.2 to 8.4 ± 3.6 mg/kg/min. CONCLUSION All cardiometabolic parameters of obese subjects, except for insulin sensitivity, normalised completely after weight loss. The latter was improved by a weight loss maintenance programme if successfully completed.
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Affiliation(s)
- Vincent Makoundou
- Service of Therapeutic Education for Chronic Diseases, Department of Community Medicine and Primary Care, Geneva University Hospital
| | - Zoltan Pataky
- Service of Therapeutic Education for Chronic Diseases, Department of Community Medicine and Primary Care, Geneva University Hospital
| | - Elisabetha Bobbioni-Harsch
- Service of Therapeutic Education for Chronic Diseases, Department of Community Medicine and Primary Care, Geneva University Hospital
| | | | - Alain Golay
- Service of Therapeutic Education for Chronic Diseases, Department of Community Medicine and Primary Care, Geneva University Hospital
- * Service of Therapeutic Education for Chronic Diseases, WHO Collaborating Centre, Department of Community Medicine and Primary Care, Geneva University Hospital, 1211 Geneva 14, Switzerland, Tel: +41 22 372 97-26, Fax -15
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