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Zambrano C, González E, Salmeron D, Ruiz-Ojeda FJ, Luján J, Scheer FA, Garaulet M. Time-restricted eating affects human adipose tissue fat mobilization. Obesity (Silver Spring) 2024; 32:1680-1688. [PMID: 39073251 PMCID: PMC11357894 DOI: 10.1002/oby.24057] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 03/11/2024] [Accepted: 04/16/2024] [Indexed: 07/30/2024]
Abstract
OBJECTIVE Time-restricted eating (TRE), a dietary approach that confines food intake to specific time windows, has shown metabolic benefits. However, its impact on body weight loss remains inconclusive. The objective of this study was to investigate the influence of early TRE (eTRE) and delayed TRE (dTRE) on fat mobilization using human adipose tissue (AT) cultures. METHODS Subcutaneous AT was collected from 21 participants with severe obesity. We assessed fat mobilization by measuring glycerol release in AT culture across four treatment conditions: control, eTRE, dTRE, and 24-h fasting. RESULTS TRE had a significant impact on lipolysis (glycerol release [mean (SD)] in micromoles per hour per gram: control, 0.05 [0.003]; eTRE, 0.10 [0.006]; dTRE, 0.08 [0.005]; and fasting, 0.17 [0.008]; p < 0.0001). Both eTRE and dTRE increased lipolysis compared with the control group, with eTRE showing higher glycerol mobilization than dTRE during the overall 24-h time window, especially at the nighttime/habitual sleep episode (p < 0.0001). Further analysis of TRE based on fasting duration revealed that, independently of the time window, glycerol release increased with fasting duration (in micromoles per hour per gram: 8 h = 0.08 [0.001]; 12 h = 0.09 [0.008]; and 16 h of fasting = 0.12 [0.011]; p < 0.0001). CONCLUSIONS This study provides insights into the potential benefits of TRE on fat mobilization and may guide the design of future dietary strategies for weight management and metabolic health.
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Affiliation(s)
- Carolina Zambrano
- Department of Physiology, Regional Campus of International Excellence, University of Murcia, 30100 Murcia, Spain
- Biomedical Research Institute of Murcia, IMIB-Arrixaca-UMU, University Clinical Hospital 30120, Murcia, Spain
| | - Elena González
- Department of Nutrition and integrative physiology, University of Utah, Salt Lake City, Utah, United States
| | - Diego Salmeron
- Biomedical Research Institute of Murcia, IMIB-Arrixaca-UMU, University Clinical Hospital 30120, Murcia, Spain
- Health and Social Sciences Department, University of Murcia, Murcia, Spain
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), 28029 Madrid, Spain
| | - Francisco Javier Ruiz-Ojeda
- Institute of Nutrition and Food Technology “José Mataix,” Center of Biomedical Research, University of Granada, Granada, Spain
- Department of Biochemistry and Molecular Biology II, School of Pharmacy, University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria IBS.GRANADA, Complejo Hospitalario Universitario de Granada, Granada, Spain
| | - Juan Luján
- General Surgery Service, Hospital Quiron salud Murcia, Spain
| | - Frank A.J.L Scheer
- Medical Chronobiology Program, Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital, Boston, MA, United States
- Broad Institute of Massachusetts Institute of Technology (M.I.T.) and Harvard, Cambridge, MA, United States
- Division of Sleep Medicine, Harvard Medical School, Boston, MA, United States
| | - Marta Garaulet
- Department of Physiology, Regional Campus of International Excellence, University of Murcia, 30100 Murcia, Spain
- Biomedical Research Institute of Murcia, IMIB-Arrixaca-UMU, University Clinical Hospital 30120, Murcia, Spain
- Medical Chronobiology Program, Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital, Boston, MA, United States
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Zambrano C, Garitaonaindia MT, Salmerón D, Pérez-Sanz F, Tchio C, Picinato MC, de Medina FS, Luján J, Scheer FAJL, Saxena R, Martínez-Augustin O, Garaulet M. Melatonin decreases human adipose tissue insulin sensitivity. J Pineal Res 2024; 76:e12965. [PMID: 38860494 DOI: 10.1111/jpi.12965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 05/07/2024] [Accepted: 05/13/2024] [Indexed: 06/12/2024]
Abstract
Melatonin is a pineal hormone that modulates the circadian system and exerts soporific and phase-shifting effects. It is also involved in many other physiological processes, such as those implicated in cardiovascular, endocrine, immune, and metabolic functions. However, the role of melatonin in glucose metabolism remains contradictory, and its action on human adipose tissue (AT) explants has not been demonstrated. We aimed to assess whether melatonin (a pharmacological dose) influences insulin sensitivity in human AT. This will help better understand melatonin administration's effect on glucose metabolism. Abdominal AT (subcutaneous and visceral) biopsies were obtained from 19 participants with severe obesity (age: 42.84 ± 12.48 years; body mass index: 43.14 ± 8.26 kg/m2) who underwent a laparoscopic gastric bypass. AT biopsies were exposed to four different treatments: control (C), insulin alone (I) (10 nM), melatonin alone (M) (5000 pg/mL), and insulin plus melatonin combined (I + M). All four conditions were repeated in both subcutaneous and visceral AT, and all were performed in the morning at 8 a.m. (n = 19) and the evening at 8 p.m. (in a subsample of n = 12). We used western blot analysis to determine insulin signaling (using the pAKT/tAKT ratio). Furthermore, RNAseq analyses were performed to better understand the metabolic pathways involved in the effect of melatonin on insulin signaling. As expected, insulin treatment (I) increased the pAKT/tAKT ratio compared with control (p < .0001). Furthermore, the addition of melatonin (I + M) resulted in a decrease in insulin signaling as compared with insulin alone (I); this effect was significant only during the evening time (not in the morning time). Further, RNAseq analyses in visceral AT during the evening condition (at 8 p.m.) showed that melatonin resulted in a prompt transcriptome response (around 1 h after melatonin addition), particularly by downregulating the insulin signaling pathway. Our results show that melatonin reduces insulin sensitivity in human AT during the evening. These results may partly explain the previous studies showing a decrease in glucose tolerance after oral melatonin administration in the evening or when eating late when endogenous melatonin is present.
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Affiliation(s)
- Carolina Zambrano
- Department of Physiology, Regional Campus of International Excellence, University of Murcia, Murcia, Spain
- Research Biomedical Institute of Murcia (IMIB)-Arrixaca, Murcia, Spain
| | - Mireia Tena Garitaonaindia
- Department of Biochemistry and Molecular Biology II, Centro de Investigación Biomédica en Red en Enfermedades Hepáticas y Digestivas (CIBERehd), Ibs Granada, Instituto de Nutrición y Tecnología de los Alimentos (INYTA) José Mataix, University of Granada, Granada, Spain
| | - Diego Salmerón
- Research Biomedical Institute of Murcia (IMIB)-Arrixaca, Murcia, Spain
- Health and Social Sciences Department, University of Murcia, Murcia, Spain
- Consortium for Biomedical Research in Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | | | - Cynthia Tchio
- Center for Genomic Medicine, Massachusetts General Hospital, Cambridge, Massachusetts, USA
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts, USA
- Department of Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA
- Cardiovascular Research Institute, Morehouse School of Medicine, Atlanta, Georgia, USA
| | | | - Fermín Sánchez de Medina
- Department of Pharmacology, Centro de Investigación Biomédica en Red en Enfermedades Hepáticas y Digestivas (CIBERehd), Ibs Granada, Universidad de Granada, Granada, Spain
| | - Juan Luján
- General Surgery Service, Hospital Quirónsalud Murcia, Murcia, Spain
| | - Frank A J L Scheer
- Medical Chronobiology Program, Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women's Hospital, Boston, Massachusetts, USA
- Broad Institute of Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, Massachusetts, USA
- Division of Sleep Medicine, Harvard Medical School, Boston, Massachusetts, USA
| | - Richa Saxena
- Center for Genomic Medicine, Massachusetts General Hospital, Cambridge, Massachusetts, USA
| | - Olga Martínez-Augustin
- Department of Biochemistry and Molecular Biology II, Centro de Investigación Biomédica en Red en Enfermedades Hepáticas y Digestivas (CIBERehd), Ibs Granada, Instituto de Nutrición y Tecnología de los Alimentos (INYTA) José Mataix, University of Granada, Granada, Spain
| | - Marta Garaulet
- Department of Physiology, Regional Campus of International Excellence, University of Murcia, Murcia, Spain
- Research Biomedical Institute of Murcia (IMIB)-Arrixaca, Murcia, Spain
- Medical Chronobiology Program, Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women's Hospital, Boston, Massachusetts, USA
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Zambrano C, Kulyté A, Luján J, Rivero-Gutierrez B, Sánchez de Medina F, Martínez-Augustin O, Ryden M, Scheer FAJL, Garaulet M. Habitual nappers and non-nappers differ in circadian rhythms of LIPE expression in abdominal adipose tissue explants. Front Endocrinol (Lausanne) 2023; 14:1166961. [PMID: 37361522 PMCID: PMC10289256 DOI: 10.3389/fendo.2023.1166961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 05/16/2023] [Indexed: 06/28/2023] Open
Abstract
Background and purpose Napping is a widespread practice worldwide and has in recent years been linked to increased abdominal adiposity. Lipase E or LIPE encodes the protein hormone-sensitive lipase (HSL), an enzyme that plays an important role in lipid mobilization and exhibits a circadian expression rhythm in human adipose tissue. We hypothesized that habitual napping may impact the circadian expression pattern of LIPE, which in turn may attenuate lipid mobilization and induce abdominal fat accumulation. Methods Abdominal adipose tissue explants from participants with obesity (n = 17) were cultured for a 24-h duration and analyzed every 4 h. Habitual nappers (n = 8) were selected to match non-nappers (n = 9) in age, sex, BMI, adiposity, and metabolic syndrome traits. Circadian LIPE expression rhythmicity was analyzed using the cosinor method. Results Adipose tissue explants exhibited robust circadian rhythms in LIPE expression in non-nappers. In contrast, nappers had a flattened rhythm. LIPE amplitude was decreased in nappers as compared with non-nappers (71% lower). The decrease in amplitude among nappers was related to the frequency of napping (times per week) where a lower rhythm amplitude was associated with a higher napping frequency (r = -0.80; P = 0.018). Confirmatory analyses in the activity of LIPE's protein (i.e., HSL) also showed a significant rhythm in non-nappers, whereas significance in the activity of HSL was lost among nappers. Conclusion Our results suggest that nappers display dysregulated circadian LIPE expression as well as dysregulated circadian HSL activity, which may alter lipid mobilization and contribute to increased abdominal obesity in habitual nappers.
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Affiliation(s)
- Carolina Zambrano
- Department of Physiology, Regional Campus of International Excellence, University of Murcia, Murcia, Spain
- Biomedical Research Institute of Murcia, Instituto Murciano de Investigación Biosanitaria (IMIB)-Arrixaca-Universidad de Murcia (UMU), University Clinical Hospital, Murcia, Spain
| | - Agné Kulyté
- Endocrinology Unit, Department of Medicine Huddinge (H7), Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Juán Luján
- General Surgery Service, Hospital Quirón salud, Murcia, Spain
| | - Belén Rivero-Gutierrez
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, United States
| | - Fermín Sánchez de Medina
- Department of Pharmacology, Centro de Investigación Biomédica en Red (CIBERed), Ibs Granada, Universidad de Granada, Granada, Spain
| | - Olga Martínez-Augustin
- Department of Biochemistry and Molecular Biology 2, Centro de Investigación Biomédica en Red, Enfermedades Hepáticas y Digestivas (CIBERehd), Ibs Granada, Instituto de Nutrición y Tecnología de los Alimentos (INYTA) José Mataix, Universidad de Granada, Granada, Spain
| | - Mikael Ryden
- Endocrinology Unit, Department of Medicine Huddinge (H7), Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
| | - Frank A. J. L. Scheer
- Medical Chronobiology Program, Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital, Boston, MA, United States
- Division of Sleep Medicine, Harvard Medical School, Boston, MA, United States
- Broad Institute of Massachusetts Institute of Technology (MIT) and Harvard, Cambridge, MA, United States
| | - Marta Garaulet
- Department of Physiology, Regional Campus of International Excellence, University of Murcia, Murcia, Spain
- Biomedical Research Institute of Murcia, Instituto Murciano de Investigación Biosanitaria (IMIB)-Arrixaca-Universidad de Murcia (UMU), University Clinical Hospital, Murcia, Spain
- Medical Chronobiology Program, Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital, Boston, MA, United States
- Division of Sleep Medicine, Harvard Medical School, Boston, MA, United States
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Yari Z, Naser-Nakhaee Z, Karimi‐Shahrbabak E, Cheraghpour M, Hedayati M, Mohaghegh SM, Ommi S, Hekmatdoost A. Combination therapy of flaxseed and hesperidin enhances the effectiveness of lifestyle modification in cardiovascular risk control in prediabetes: a randomized controlled trial. Diabetol Metab Syndr 2021; 13:3. [PMID: 33402222 PMCID: PMC7786892 DOI: 10.1186/s13098-020-00619-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 12/17/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Regarding the increasing prevalence of cardiometabolic abnormalities, and its association with non-communicable chronic diseases, providing preventive and therapeutic strategies is a priority. A randomized placebo-controlled study was conducted to assess the effects of combination therapy of milled brown flaxseed and hesperidin during lifestyle intervention on controlling cardiovascular risk in prediabetes. METHODS A total of forty-eight subjects were randomly assigned to receive lifestyle intervention plus combination therapy of brown flaxseed (30 g milled) and hesperidin (two 500 mg capsules) or lifestyle modification alone for 12 weeks. Changes from baseline in anthropometric measures, lipid profile and atherogenic indices, glucose homeostasis parameters, and inflammatory biomarkers was assessed as a primary end point. RESULTS Anthropometric data comparison between the two groups showed a significant reduction in weight (p = 0.048). Waist circumference reduction was about twice that of the control group (- 6.75 cm vs - 3.57 cm), but this difference was not statistically significant. Comparison of blood pressure changes throughout the study indicated a greater reduction in blood pressure in the intervention group rather than control group (- 5.66 vs. - 1.56 mmHg, P = 0.049). Improvements of lipid profile and atherogenic indices, glucose homeostasis parameters, and inflammatory biomarkers in flaxseed-hesperidin group was significantly more than the control group after 12 weeks of intervention (p < 0.05). CONCLUSION Our results indicate that co-administration of flaxseed and hesperidin as an adjunct to lifestyle modification program is more effective than lifestyle modification alone in the metabolic abnormalities remission of prediabetic patients. TRIAL REGISTRATION The trial was registered with ClinicalTrials.gov, number NCT03737422. Registered 11 November 2018. Retrospectively registered, https://clinicaltrials.gov/ct2/results?cond=&term=NCT03737422&cntry=&state=&city=&dist= .
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Affiliation(s)
- Zahra Yari
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition and Food Technology, National Nutrition and Food Technology, Research Institute Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Zahra Naser-Nakhaee
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition and Food Technology, National Nutrition and Food Technology, Research Institute Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Makan Cheraghpour
- Cancer Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Mehdi Hedayati
- Cellular and Molecular Endocrine Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyede Marjan Mohaghegh
- Diabetes Research Center, Health Research Institute, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Shahrzad Ommi
- Department of Dietetics and Nutrition, Florida International University, Miami, FL USA
| | - Azita Hekmatdoost
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition and Food Technology, National Nutrition and Food Technology, Research Institute Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Arredondo-Amador M, Zambrano C, Kulyté A, Luján J, Hu K, Sánchez de Medina F, Scheer FAJL, Arner P, Ryden M, Martínez-Augustin O, Garaulet M. Circadian Rhythms in Hormone-sensitive Lipase in Human Adipose Tissue: Relationship to Meal Timing and Fasting Duration. J Clin Endocrinol Metab 2020; 105:5877911. [PMID: 32725188 PMCID: PMC7538104 DOI: 10.1210/clinem/dgaa492] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Accepted: 07/27/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Fat mobilization in adipose tissue (AT) has a specific timing. However, circadian rhythms in the activity of the major enzyme responsible for fat mobilization, hormone-sensitive lipase (HSL), have not been demonstrated in humans. OBJECTIVE To analyze in a cross-sectional study whether there is an endogenous circadian rhythm in HSL activity in human AT ex vivo and whether rhythm characteristics are related to food timing or fasting duration. METHODS Abdominal AT biopsies were obtained from 18 severely obese participants (age: 46 ± 11 years; body mass index 42 ± 6 kg/m2) who underwent laparoscopic gastric bypass. Twenty-four-hour rhythms of HSL activity and LIPE (HSL transcript in humans) expression in subcutaneous AT were analyzed together with habitual food timing and night fasting duration. RESULTS HSL activity exhibited a circadian rhythm (P = .023) and reached the maximum value at circadian time 16 (CT) that corresponded to around midnight (relative local clock time. Similarly, LIPE displayed a circadian rhythm with acrophase also at night (P = .0002). Participants with longer night fasting duration >11.20 hours displayed almost double the amplitude (1.91 times) in HSL activity rhythm than those with short duration (P = .013); while habitual early diners (before 21:52 hours) had 1.60 times higher amplitude than late diners (P = .035). CONCLUSIONS Our results demonstrate circadian rhythms in HSL activity and may lead to a better understanding of the intricate relationships between food timing, fasting duration and body fat regulation.
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Affiliation(s)
- María Arredondo-Amador
- Department of Pharmacology, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Investigación Biosanitaria ibs, Granada, School of Pharmacy, University of Granada, Granada, Spain
| | - Carolina Zambrano
- Department of Physiology, Biomedical Research Institute of Murcia (IMIB)-Arrixaca, University of Murcia, Murcia, Spain
| | - Agné Kulyté
- Endocrinology Unit, Department of Medicine (H7) Huddinge, Karolinska Institutet, Stockholm, Sweden
| | - Juán Luján
- General Surgery Service, University Hospital Virgen de la Arrixaca, Murcia, Spain
| | - Kun Hu
- Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital, Boston, Massachusetts; Division of Sleep Medicine, Harvard Medical School, Boston, Massachusetts
| | - Fermín Sánchez de Medina
- Department of Pharmacology, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Investigación Biosanitaria ibs, Granada, School of Pharmacy, University of Granada, Granada, Spain
| | - Frank A J L Scheer
- Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital, Boston, Massachusetts; Division of Sleep Medicine, Harvard Medical School, Boston, Massachusetts
| | - Peter Arner
- Endocrinology Unit, Department of Medicine (H7) Huddinge, Karolinska Institutet, Stockholm, Sweden
| | - Mikael Ryden
- Endocrinology Unit, Department of Medicine (H7) Huddinge, Karolinska Institutet, Stockholm, Sweden
| | - Olga Martínez-Augustin
- Department of Biochemistry and Molecular Biology II, School of Pharmacy, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Instituto de Investigación Biosanitaria ibs, Granada, Instituto de Nutrición y Tecnología de los Alimentos José Mataix, University of Granada, Granada, Spain
| | - Marta Garaulet
- Department of Physiology, Biomedical Research Institute of Murcia (IMIB)-Arrixaca, University of Murcia, Murcia, Spain
- Division of Sleep and Circadian Disorders, Brigham and Women’s Hospital, Boston, Massachusetts; Division of Sleep Medicine, Harvard Medical School, Boston, Massachusetts
- Correspondence and Reprint Requests: Marta Garaulet, Department of Physiology, University of Murcia, s/n. 30100, Murcia, Spain; or Division of Sleep and Circadian Disorders, Brigham and Women’s, Boston, MA, USA. E-mail: ;
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Effect of omega-3 fatty acids supplementation on anthropometric indices in children and adolescents: A systematic review and meta-analysis of randomized controlled trials. Complement Ther Med 2020; 53:102487. [PMID: 33066870 DOI: 10.1016/j.ctim.2020.102487] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 05/02/2020] [Accepted: 06/15/2020] [Indexed: 12/17/2022] Open
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Tutunchi H, Ebrahimi-Mameghani M, Ostadrahimi A, Asghari-Jafarabadi M. What are the optimal cut-off points of anthropometric indices for prediction of overweight and obesity? Predictive validity of waist circumference, waist-to-hip and waist-to-height ratios. Health Promot Perspect 2020; 10:142-147. [PMID: 32296627 PMCID: PMC7146042 DOI: 10.34172/hpp.2020.23] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Accepted: 01/12/2020] [Indexed: 12/12/2022] Open
Abstract
Background: Planning for obesity prevention is an important global health priority. Our aim in this study was to find the optimal cut-off points of waist circumference (WC), waist- to- hipratio (WHR) and waist- to- height ratio (WHtR), as three anthropometric indices, for prediction of overweight and obesity. We also aimed to compare the predictive ability of these indices to introduce the best choice. Methods: In this cross-sectional study, a total of 500 subjects were investigated. Anthropometric indicators were measured using a standard protocol. We considered body mass index (BMI) as the simple and most commonly used index for measuring general obesity as the comparison indicator in the present study to assess the diagnostic value for other reported obesity indices.We also performed receiver operating characteristic (ROC) curve analysis to define the optimal cut-off points of the anthropometric indicators and the best indices for overweight and obesity. Results: The proposed optimal cut-offs for WC, WHtR, and WHR were 84 cm, 0.48 and 0.78 for women and 98 cm, 0.56 and 0.87 for men, respectively. The area under the ROC curve ofWHtR (women: AUC=0.97, 95% CI: 0.96-0.99 vs. men: AUC=0.97, 95%CI: 0.96-0.99) and WC(women: AUC=0.97, 95% CI, 0.95-0.99 vs. men: AUC=0.98, 95% CI: 0.97-0.99) were greater than WHR (women: AUC=0.79, 95% CI =0.74-0.85 vs. men: AUC=0.84, 95% CI=0.79-0.88). Conclusion: This study demonstrated that the WC and WHtR indicators are stronger indicators compared to the others. However, further studies using desirable and also local cutoffs against more accurate techniques for body fat measurement such as computerized tumor (CT) scans and dual-energy x-ray absorptiometry (DEXA) are required.
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Affiliation(s)
- Helda Tutunchi
- Student Research Committee, Nutrition Research Center, School of Nutrition & Food Sciences, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Alireza Ostadrahimi
- Nutrition Research Center, Department of Clinical Nutrition, Tabriz University of Medical Sciences, Tabriz, Iran
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Corbatón Anchuelo A, Martínez-Larrad MT, Serrano-García I, Fernández Pérez C, Serrano-Ríos M. Body fat anthropometric indexes: Which of those identify better high cardiovascular risk subjects? A comparative study in Spanish population. PLoS One 2019; 14:e0216877. [PMID: 31120940 PMCID: PMC6532872 DOI: 10.1371/journal.pone.0216877] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2018] [Accepted: 04/30/2019] [Indexed: 01/20/2023] Open
Abstract
Aim To determine the association of body mass index (BMI), waist circumference (WC), waist to hip ratio (WHR), waist to height ratio (WHtr) and Body Shape Index (ABSI) with high cardiovascular risk (CVR), as well as to determine whether how strong are these relationships. Material and methods A cross-sectional study was carried out in Spanish Caucasian adults. 3,456 subjects completed the study, 45.78% males, aged < 65 years and non-diabetic subjects. Anthropometric/biochemical variables were measured. We determined ABSI based on WC adjusted for height and weight. High CVR was defined as ≥ 20% according to the Framingham chart, ≥ 5% with the SCORE chart, and ≥ 7.5% with the ACC/AHA guide. Areas under the receiver operating characteristic curves (AUCs) were estimated for each anthropometric measure. Results Most significant AUCs in males were: WHtr and ABSI for Framingham ≥ 20% and SCORE ≥ 5%. Also significant were WHtr, WC and ABSI for ACCA/AHA ≥ 7.5%. On the other hand, most significant AUCs in females were: WHtr and WC for Framingham ≥ 20%; and WHtr and WHR for SCORE ≥ 5%, WHtr, and WC for ACC/AHA guide ≥ 7.5%. Conclusions Overall, the best anthropometric index identifying Spanish males and females who are at high risk for CV events is WHtr. ABSI was also found to be a good anthropometric index to predict high CVR in Spanish males according to FR, SCORE and ACC/AHA charts. For Spanish females, WC is a good anthropometric index according to FR and ACC/AHA guide, while WHR is better according to SCORE.
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Affiliation(s)
- Arturo Corbatón Anchuelo
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
- * E-mail:
| | - María Teresa Martínez-Larrad
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
| | - Irene Serrano-García
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
- UGC de Medicina Preventiva, Hospital Clínico San Carlos, Madrid, Spain
| | - Cristina Fernández Pérez
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
- UGC de Medicina Preventiva, Hospital Clínico San Carlos, Madrid, Spain
- Facultad de Enfermería, Universidad Complutense de Madrid (UCM), Madrid, Spain
| | - Manuel Serrano-Ríos
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos (IdISSC), Madrid, Spain
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Wu PS, Jordan SW, Hodson T, Chao AH. Waist-to-hip ratio is a better predictor than body mass index for morbidity in abdominally based breast reconstruction. Microsurgery 2018; 38:731-737. [DOI: 10.1002/micr.30346] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 04/14/2018] [Accepted: 06/08/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Peter S. Wu
- Department of Plastic Surgery; Ohio State University; Columbus Ohio
| | | | - Trevor Hodson
- Department of Plastic Surgery; Ohio State University; Columbus Ohio
| | - Albert H. Chao
- Department of Plastic Surgery; Ohio State University; Columbus Ohio
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Abstract
OBJECTIVE The aim of the study was to investigate whether postmenopausal women show differences in circadian-related variables and sleep characteristics compared with premenopausal women, and to analyze potential associations between these circadian-related variables and abdominal fat distribution or metabolic syndrome (MetS) components. METHODS A total of 177 women were studied (127 premenopausal, 50 postmenopausal). Sixty percent of the total population was overweight/obese, with no significant differences between premenopausal (60%) and postmenopausal women (62%) (P = 0.865). Wrist temperature (WT) and rest-activity cycles were measured during 8 consecutive days, and sleep and food diaries collected. MetS characteristics and daily patterns of saliva cortisol were analyzed. Sleep characteristics were assessed with domiciliary polysomnography. RESULTS Postmenopausal women showed a less robust rhythm in WT with lower amplitude (°C) (0.8 ± 0.4 vs 0.9 ± 0.5) (P < 0.05) and lower mean temperature values at the midpoint of sleep than premenopausal women. Postmenopausal women were also more morning-type than premenopausal women, showing a phase advance of approximately 1 hour in WT and rest-activity rhythms, and more morning-type habits (earlier sleep onset/offset and breakfast intake) (P < 0.05). Postmenopausal women showed higher levels of activity in the morning and lower in the evening compared with premenopausal women (P < 0.05). Daily variability in cortisol was significantly reduced in postmenopausal women compared with premenopausal women (P < 0.05). Postmenopausal women had increased frequency of sleep-related breathing abnormalities (P < 0.0001). In the women studied, abdominal fat and MetS were associated with an increase in circadian alterations (high fragmentation and low amplitude of the rhythm) (P < 0.05). CONCLUSIONS Postmenopausal women exhibit loss of circadian robustness and an increase in sleep abnormalities compared with premenopausal women.
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Mohammadi-Sartang M, Mazloom Z, Raeisi-Dehkordi H, Barati-Boldaji R, Bellissimo N, Totosy de Zepetnek JO. The effect of flaxseed supplementation on body weight and body composition: a systematic review and meta-analysis of 45 randomized placebo-controlled trials. Obes Rev 2017. [PMID: 28635182 DOI: 10.1111/obr.12550] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Flaxseed consumption may be inversely associated with obesity; however, findings of available randomized controlled trials (RCTs) are conflicting. The present study aimed to systematically review and analyse RCTs assessing the effects of flaxseed consumption on body weight and body composition. PubMed, Medline via Ovid, SCOPUS, EMBASE and ISI Web of Sciences databases were searched up to November 2016. Mean changes in body composition indices including body weight, body mass index (BMI) and waist circumference were extracted. Effect sizes were expressed as weighted mean difference (WMD) and 95% confidence intervals (CI). Heterogeneity between studies was assessed with the I2 test. Publication bias and subgroup analyses were also performed. The quality of articles was assessed via the Jadad scale. A total of 45 RCTs were included. Meta-analyses suggested a significant reduction in body weight (WMD: -0.99 kg, 95% CI: -1.67, -0.31, p = 0.004), BMI (WMD: -0.30 kg m-2 , 95% CI: -0.53, -0.08, p = 0.008) and waist circumference (WMD: -0.80 cm, 95% CI: -1.40, -0.20, p = 0.008) following flaxseed supplementation. Subgroup analyses showed that using whole flaxseed in doses ≥30 g d-1 , longer-term interventions (≥12 weeks) and studies including participants with higher BMI (≥ 27 kg m-2 ) had positive effects on body composition. Whole flaxseed is a good choice for weight management particularly for weight reduction in overweight and obese participants.
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Affiliation(s)
- M Mohammadi-Sartang
- Department of Clinical Nutrition, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran.,Meta-Research Innovation Office, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Z Mazloom
- Department of Clinical Nutrition, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran.,Meta-Research Innovation Office, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - H Raeisi-Dehkordi
- Department of Clinical Nutrition, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran.,Meta-Research Innovation Office, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - R Barati-Boldaji
- Meta-Research Innovation Office, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran.,Department of Community Nutrition, School of Nutrition and Food Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - N Bellissimo
- School of Nutrition, Ryerson University, Toronto, Ontario, Canada
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12
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Rangel-Zuñiga OA, Cruz-Teno C, Haro C, Quintana-Navarro GM, Camara-Martos F, Perez-Martinez P, Garcia-Rios A, Garaulet M, Tena-Sempere M, Lopez-Miranda J, Perez-Jimenez F, Camargo A. Differential menopause- versus aging-induced changes in oxidative stress and circadian rhythm gene markers. Mech Ageing Dev 2017; 164:41-48. [PMID: 28408140 DOI: 10.1016/j.mad.2017.04.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 03/17/2017] [Accepted: 04/01/2017] [Indexed: 12/14/2022]
Abstract
Menopause is characterized by the depletion of estrogen that has been proposed to cause oxidative stress. Circadian rhythm is an internal biological clock that controls physiological processes. It was analyzed the gene expression in peripheral blood mononuclear cells and the lipids and glucose levels in plasma of a subgroup of 17 pre-menopausal women, 19 men age-matched as control group for the pre-menopausal women, 20 post-menopausal women and 20 men age-matched as control group for the post-menopausal women; all groups were matched by body mass index. Our study showed a decrease in the expression of the oxidative stress-related gene GPX1, and an increase in the expression of SOD1 as consequence of menopause. In addition, we found that the circadian rhythm-related gene PER2 decreased as consequence of menopause. On the other hand, we observed a decrease in the expression of the oxidative stress-related gene GPX4 and an increase in the expression of CAT as a consequence of aging, independently of menopause. Our results suggest that the menopause-induced oxidative stress parallels a disruption in the circadian clock in women, and part of the differences in oxidative stress observed between pre- and post-menopausal women was due to aging, independent of menopause. Clinical Trials.gov.Identifier: NCT00924937.
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Affiliation(s)
- Oriol A Rangel-Zuñiga
- Lipids and Atherosclerosis Unit, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Reina Sofia University Hospital, University of Cordoba, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Cordoba, Spain
| | - Cristina Cruz-Teno
- Lipids and Atherosclerosis Unit, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Reina Sofia University Hospital, University of Cordoba, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Cordoba, Spain
| | - Carmen Haro
- Lipids and Atherosclerosis Unit, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Reina Sofia University Hospital, University of Cordoba, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Cordoba, Spain
| | - Gracia M Quintana-Navarro
- Lipids and Atherosclerosis Unit, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Reina Sofia University Hospital, University of Cordoba, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Cordoba, Spain
| | | | - Pablo Perez-Martinez
- Lipids and Atherosclerosis Unit, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Reina Sofia University Hospital, University of Cordoba, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Cordoba, Spain
| | - Antonio Garcia-Rios
- Lipids and Atherosclerosis Unit, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Reina Sofia University Hospital, University of Cordoba, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Cordoba, Spain
| | | | - Manuel Tena-Sempere
- CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Cordoba, Spain; Department of Cell Biology, Physiology, and Immunology, IMIBIC/Reina Sofia University Hospital/University of Cordoba, Cordoba, Spain
| | - Jose Lopez-Miranda
- Lipids and Atherosclerosis Unit, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Reina Sofia University Hospital, University of Cordoba, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Cordoba, Spain
| | - Francisco Perez-Jimenez
- Lipids and Atherosclerosis Unit, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Reina Sofia University Hospital, University of Cordoba, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Cordoba, Spain
| | - Antonio Camargo
- Lipids and Atherosclerosis Unit, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Reina Sofia University Hospital, University of Cordoba, Spain; CIBER Fisiopatología de la Obesidad y Nutrición (CIBEROBN), Instituto de Salud Carlos III, Cordoba, Spain.
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13
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Carrasco-Benso MP, Rivero-Gutierrez B, Lopez-Minguez J, Anzola A, Diez-Noguera A, Madrid JA, Lujan JA, Martínez-Augustin O, Scheer FAJL, Garaulet M. Human adipose tissue expresses intrinsic circadian rhythm in insulin sensitivity. FASEB J 2016; 30:3117-23. [PMID: 27256623 DOI: 10.1096/fj.201600269rr] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Accepted: 05/19/2016] [Indexed: 11/11/2022]
Abstract
In humans, insulin sensitivity varies according to time of day, with decreased values in the evening and at night. Mechanisms responsible for the diurnal variation in insulin sensitivity are unclear. We investigated whether human adipose tissue (AT) expresses intrinsic circadian rhythms in insulin sensitivity that could contribute to this phenomenon. Subcutaneous and visceral AT biopsies were obtained from extremely obese participants (body mass index, 41.8 ± 6.3 kg/m(2); 46 ± 11 y) during gastric-bypass surgery. To assess the rhythm in insulin signaling, AKT phosphorylation was determined every 4 h over 24 h in vitro in response to different insulin concentrations (0, 1, 10, and 100 nM). Data revealed that subcutaneous AT exhibited robust circadian rhythms in insulin signaling (P < 0.00001). Insulin sensitivity reached its maximum (acrophase) around noon, being 54% higher than during midnight (P = 0.009). The amplitude of the rhythm was positively correlated with in vivo sleep duration (r = 0.53; P = 0.023) and negatively correlated with in vivo bedtime (r = -0.54; P = 0.020). No circadian rhythms were detected in visceral AT (P = 0.643). Here, we demonstrate the relevance of the time of the day for how sensitive AT is to the effects of insulin. Subcutaneous AT shows an endogenous circadian rhythm in insulin sensitivity that could provide an underlying mechanism for the daily rhythm in systemic insulin sensitivity.-Carrasco-Benso, M. P., Rivero-Gutierrez, B., Lopez-Minguez, J., Anzola, A., Diez-Noguera, A., Madrid, J. A., Lujan, J. A., Martínez-Augustin, O., Scheer, F. A. J. L., Garaulet, M. Human adipose tissue expresses intrinsic circadian rhythm in insulin sensitivity.
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Affiliation(s)
- Maria P Carrasco-Benso
- Department of Physiology, Faculty of Biology, Biomedical Research Institute of Murcia (IMIB)-Arrixaca, University of Murcia, Murcia, Spain
| | - Belen Rivero-Gutierrez
- Department of Biochemistry and Molecular Biology II, Biomedical Research Networking Center in Hepatic and Digestive Diseases (CIBEREHD), School of Pharmacy, Instituto de Investigación Biosanitaria de Granada, University of Granada, Granada, Spain
| | - Jesus Lopez-Minguez
- Department of Physiology, Faculty of Biology, Biomedical Research Institute of Murcia (IMIB)-Arrixaca, University of Murcia, Murcia, Spain
| | - Andrea Anzola
- Department of Biochemistry and Molecular Biology II, Biomedical Research Networking Center in Hepatic and Digestive Diseases (CIBEREHD), School of Pharmacy, Instituto de Investigación Biosanitaria de Granada, University of Granada, Granada, Spain
| | - Antoni Diez-Noguera
- Department of Physiology, Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - Juan A Madrid
- Department of Physiology, Faculty of Biology, Biomedical Research Institute of Murcia (IMIB)-Arrixaca, University of Murcia, Murcia, Spain
| | - Juan A Lujan
- General Surgery Service, University Hospital Virgen de la Arrixaca, Murcia, Spain
| | - Olga Martínez-Augustin
- Department of Biochemistry and Molecular Biology II, Biomedical Research Networking Center in Hepatic and Digestive Diseases (CIBEREHD), School of Pharmacy, Instituto de Investigación Biosanitaria de Granada, University of Granada, Granada, Spain
| | - Frank A J L Scheer
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, Boston, Massachusetts, USA; and Division of Sleep Medicine, Harvard Medical School, Boston, Massachusetts, USA
| | - Marta Garaulet
- Department of Physiology, Faculty of Biology, Biomedical Research Institute of Murcia (IMIB)-Arrixaca, University of Murcia, Murcia, Spain;
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Du S, Jin J, Fang W, Su Q. Does Fish Oil Have an Anti-Obesity Effect in Overweight/Obese Adults? A Meta-Analysis of Randomized Controlled Trials. PLoS One 2015; 10:e0142652. [PMID: 26571503 PMCID: PMC4646500 DOI: 10.1371/journal.pone.0142652] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Accepted: 10/26/2015] [Indexed: 01/19/2023] Open
Abstract
Context Accumulating evidence has suggested favorable effects of fish oil on weight loss in animal experiments; however, findings remain inconsistent in humans. Objects The meta-analysis was performed to investigate the influence of fish oil on some parameters of body composition in overweight/obese adults. Design Human randomized, placebo-controlled trials were identified by a systematic search of Embase, PubMed, the Cochrane Library, web of science and reference lists of related reviews and articles. The random-effects model was used to estimate the calculated results. Results In total, 21 studies with 30 study arms were included in this analysis. Calculated results of the meta-analysis demonstrated that fish oil had no effect on reducing body weight (overall SMD = -0.07, 95% CI -0.21 to 0.07, P = 0.31) and BMI (overall SMD = -0.09, 95% CI -0.22 to 0.03, P = 0.14) whether alone or combined with life modification intervention in overweight/obese subjects. However, waist circumference was significantly reduced (SMD = -0.23, 95% CI -0.40 to -0.06, P = 0.008) in those with fish oil supplementation combined with life modification intervention. Waist hip ratio (WHR) was significantly reduced (overall SMD = -0.52 95% CI -0.76 to -0.27, P < 0.0005) in fish oil supplemented individuals with or without combination life modification intervention. Conclusion Current evidence cannot support an exact anti-obesity role of n-3 polyunsaturated fatty acids (PUFAs) in overweight/obese subjects. However, these subjects may benefit from reducing abdominal fat with fish oil supplementation especially when combined with life modification intervention. Further large-scale and long-term clinical trials are needed to gain definite conclusions.
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Affiliation(s)
- Shichun Du
- Department of Endocrinology, Shanghai Xin Hua Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
- * E-mail:
| | - Jie Jin
- Department of Endocrinology, Shanghai Xin Hua Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wenjun Fang
- Department of Endocrinology, Shanghai Xin Hua Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qing Su
- Department of Endocrinology, Shanghai Xin Hua Hospital affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Garaulet M, Smith CE, Gomez-Abellán P, Ordovás-Montañés M, Lee YC, Parnell LD, Arnett DK, Ordovás JM. REV-ERB-ALPHA circadian gene variant associates with obesity in two independent populations: Mediterranean and North American. Mol Nutr Food Res 2013; 58:821-9. [PMID: 24173768 DOI: 10.1002/mnfr.201300361] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 08/16/2013] [Accepted: 08/21/2013] [Indexed: 01/10/2023]
Abstract
SCOPE Despite the solid connection between REV-ERB and obesity, the information about whether genetic variations at this locus may be associated with obesity traits is scarce. Therefore our objective was to study the association between REV-ERB-ALPHA1 rs2314339 and obesity in two independent populations. METHODS AND RESULTS Participants were 2214 subjects from Spanish Mediterranean (n = 1404) and North American (n = 810) populations. Anthropometric, biochemical, dietary, and genotype analyses were performed. We found novel associations between the REV-ERB-ALPHA1 rs2314339 genotype and obesity in two independent populations: in Spanish Mediterranean and North American groups, the frequency of the minor-allele-carriers (AA+ AG) was significantly lower in the "abdominally obese" group than in those of the "nonabdominally obese" group (p < 0.05). Minor allele carriers had lower probability of abdominal obesity than noncarriers, and the effect was of similar magnitude for both populations (OR ≈ 1.50). There were consistent associations between REV-ERB-ALPHA1 genotype and obesity-related traits (p < 0.05). Energy intake was not significantly associated with REV-ERB-ALPHA1 rs2314339. However, physical activity significantly differed by genotype. A significant interaction between the REV-ERB-ALPHA1 variant and monounsaturated-fatty-acids (MUFA) intake for obesity was also detected in the Mediterranean population. CONCLUSION This new discovery highlights the importance of REV-ERB-ALPHA1 in obesity and provides evidence for the connection between our biological clock and obesity-related traits.
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Affiliation(s)
- Marta Garaulet
- Department of Physiology, Faculty of Biology, University of Murcia, Murcia, Spain; Nutrition and Genomics Laboratory, Jean Mayer US Department of Agriculture Human Nutrition Research Center on Aging at Tufts University, Boston, MA, USA
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Beechy L, Galpern J, Petrone A, Das SK. Assessment tools in obesity - psychological measures, diet, activity, and body composition. Physiol Behav 2012; 107:154-71. [PMID: 22548766 DOI: 10.1016/j.physbeh.2012.04.013] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2011] [Revised: 04/02/2012] [Accepted: 04/03/2012] [Indexed: 01/03/2023]
Abstract
The global increase in the prevalence of obesity has led to an increased need for measurement tools for research, management and treatment of the obese person. The physical size limitations imposed by obesity, variations in body composition from that of normal weight, and a complex psychopathology all pose tremendous challenges to the assessment of an obese person. There is little published research regarding what tools can be used with confidence. This review is designed to provide researchers and clinicians with a guide to the current and emerging measurement tools specifically associated with obesity research and practice. Section 1 addresses psychological measures of well being. Sections 2, 3, and 4 focus on the assessment of food intake, activity, and body composition. All sections address basic challenges involved in the study and management of obesity, and highlight methodological issues associated with the use of common assessment tools. The best available methods for use in the obese both in research and clinical practice are recommended.
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Affiliation(s)
- Laura Beechy
- Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA 02111, USA
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A simple method to predict pretracheal tissue thickness to prevent accidental decannulation in the obese. Otolaryngol Head Neck Surg 2010; 143:223-9. [PMID: 20647124 DOI: 10.1016/j.otohns.2010.03.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2009] [Revised: 02/28/2010] [Accepted: 03/03/2010] [Indexed: 11/20/2022]
Abstract
OBJECTIVE Accidental decannulation is the most common and serious complication associated with tracheostomy in obese patients. We lack a simple way to choose appropriate-size tracheostomy tubes in this patient subset. Our purpose was to 1) establish the range of trachea-to-skin soft tissue thickness (TTSSTT) in obese patients and 2) determine which easily obtained anthropometric measurements are most predictive of TTSSTT. STUDY DESIGN Case series with planned data collection. SETTING Tertiary care center. SUBJECTS AND METHODS Forty consenting patients with body mass index ranging from 30 to 70 were evaluated. These patients, from a bariatric clinic, underwent ultrasound (US) of the neck in predetermined sitting, supine, and neck-extended positions (as for tracheostomy). US was performed by a qualified radiologist. Standard anthropometric measurements of weight, height, arm, hip, waist, and neck sizes were performed. Multiple regression analysis was used to determine which anthropometric measurements best correlated with TTSSTT. RESULTS The TTSSTT, as measured by US in the supine position, ranged from 0.65 to 3.53 cm. Although the anthropometric measurement most predictive of TTSSTT was waist circumference, a combination of the more practical arm and neck circumferences resulted in an equivalent correlation (r = 0.82). The average root mean squared error was 0.4 cm. From the fitted regression equation, a table predicting TTSSTT from neck and arm circumference was prepared. CONCLUSION TTSSTT can be closely predicted using simple anthropometric tape measures. The predicted TTSSTT can be used to select appropriate tracheostomy tube size in obese patients. Use of this simple tool is expected to significantly reduce the incidence of accidental decannulation in obese patients.
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