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Zhou C, Hu Z, Liu X, Wang Y, Wei S, Liu Z. Disruption of the peripheral biological clock may play a role in sleep deprivation-induced dysregulation of lipid metabolism in both the daytime and nighttime phases. Biochim Biophys Acta Mol Cell Biol Lipids 2024; 1869:159530. [PMID: 38964437 DOI: 10.1016/j.bbalip.2024.159530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 06/14/2024] [Accepted: 07/02/2024] [Indexed: 07/06/2024]
Abstract
STUDY OBJECTIVES This study aimed to examine the effect of sleep deprivation (SD) on lipid metabolism or lipid metabolism regulation in the liver and white adipose tissue (WAT) during the light and dark phases and explored the possible mechanisms underlying the diurnal effect of SD on lipid metabolism associated with clock genes. METHODS Male C57BL/6J mice aged 2 months were deprived of sleep daily for 20 h for ten consecutive days with weakly forced locomotion. The body weights and food consumption levels of the SD and control mice were recorded, and the mice were then sacrificed at ZT (zeitgeber time) 2 and ZT 14. The peripheral clock genes, enzymes involved in fat synthesis and catabolism in the WAT, and melatonin signalling pathway-mediated lipid metabolism in the liver were assessed. Untargeted metabolomics and tandem mass tag (TMT) proteomics were used to identify differential lipid metabolism pathways in the liver. RESULTS Bodyweight gain and daily food consumption were dramatically elevated after SD. Profound disruptions in the diurnal regulation of the hepatic peripheral clock and enzymes involved in fat synthesis and catabolism in the WAT were observed, with a strong emphasis on hepatic lipid metabolic pathways, while melatonin signalling pathway-mediated lipid metabolism exhibited moderate changes. CONCLUSIONS In mice, ten consecutive days of SD increased body weight gain and daily food consumption. In addition, SD profoundly disrupted lipid metabolism in the WAT and liver during the light and dark periods. These diurnal changes may be related to disorders of the peripheral biological clock.
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Affiliation(s)
- Chufan Zhou
- Yancheng No.1 People's Hospital, Affiliated Hospital of Medical School, Nanjing University, Yancheng, China; Nanjing Children's Hospital, Clinical Teaching Hospital of Medical School, Nanjing University, Nanjing, China
| | - Ziping Hu
- Yancheng No.1 People's Hospital, Affiliated Hospital of Medical School, Nanjing University, Yancheng, China.
| | - Xuan Liu
- Department of Child, Adolescent and Women's Health, School of Public Health, Capital Medical University, Beijing, China
| | - Yuefan Wang
- Department of Child, Adolescent and Women's Health, School of Public Health, Capital Medical University, Beijing, China
| | - Shougang Wei
- Department of Child, Adolescent and Women's Health, School of Public Health, Capital Medical University, Beijing, China
| | - Zhifeng Liu
- Nanjing Children's Hospital, Clinical Teaching Hospital of Medical School, Nanjing University, Nanjing, China.
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Yang Y, Chen Z, Yan G, Kong L, Yang L, Sun H, Han Y, Zhang J, Wang X. Mass spectrum oriented metabolomics for evaluating the efficacy and discovering the metabolic mechanism of Naoling Pian for insomnia. J Pharm Biomed Anal 2023; 236:115756. [PMID: 37776625 DOI: 10.1016/j.jpba.2023.115756] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 09/24/2023] [Accepted: 09/25/2023] [Indexed: 10/02/2023]
Abstract
Insomnia is an accompanying symptom of many diseases and is closely associated with neurodegenerative diseases. Naoling Pian (NLP) is a patented Chinese medicine mainly used to treat insomnia. To evaluate the sedative and hypnotic effects of NLP and its modulatory effects on biological metabolites and metabolic pathways, rats with p-chlorophenylalanine (PCPA)-induced insomnia were given different doses of NLP by oral gavage for seven days. Diazepam (DZP) served as a positive control. Behavior was measured using the open field test, and neurotransmitter levels in the brain tissue related to sleep were measured using ELISA. The metabolic profiles and biomarkers of PCPA-induced insomnia in rats before and after NLP administration were analyzed using UPLC-Q/TOF-MS combined with multivariate data analysis. The results showed that the levels of 5-hydroxytryptamine, gamma-aminobutyric acid, norepinephrine, and dopamine in the brain tissue were significantly recovered in the NLP treatment groups, demonstrating similar or even superior therapeutic effects compared to the DZP group. The behavior of the PCPA-model rats partially recovered to normal levels after seven days of treatment. Metabolomics identified 30 metabolites in the urine as potential biomarkers of insomnia, and NLP significantly altered 25 of these, involving 21 metabolic pathways. NLP has a remarkable effect on insomnia, the therapeutic effects of which may be largely due to the rectification of metabolic disturbances. This is the first study of the sedative and hypnotic effects of NLP from a metabolomic perspective.
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Affiliation(s)
- Yu Yang
- National Chinmedomics Research Center, National TCM Key Laboratory of Serum Pharmacochemistry, Metabolomics Laboratory, Department of Pharmaceutical Analysis, Heilongjiang University of Chinese Medicine, Heping Road 24, Harbin, China
| | - Zhe Chen
- National Chinmedomics Research Center, National TCM Key Laboratory of Serum Pharmacochemistry, Metabolomics Laboratory, Department of Pharmaceutical Analysis, Heilongjiang University of Chinese Medicine, Heping Road 24, Harbin, China
| | - Guangli Yan
- National Chinmedomics Research Center, National TCM Key Laboratory of Serum Pharmacochemistry, Metabolomics Laboratory, Department of Pharmaceutical Analysis, Heilongjiang University of Chinese Medicine, Heping Road 24, Harbin, China; State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau
| | - Ling Kong
- National Chinmedomics Research Center, National TCM Key Laboratory of Serum Pharmacochemistry, Metabolomics Laboratory, Department of Pharmaceutical Analysis, Heilongjiang University of Chinese Medicine, Heping Road 24, Harbin, China
| | - Le Yang
- State Key Laboratory of Dampness Syndrome, The Second Affiliated Hospital Guangzhou University of Chinese Medicine, Dade Road 111, Guangzhou, China
| | - Hui Sun
- National Chinmedomics Research Center, National TCM Key Laboratory of Serum Pharmacochemistry, Metabolomics Laboratory, Department of Pharmaceutical Analysis, Heilongjiang University of Chinese Medicine, Heping Road 24, Harbin, China.
| | - Ying Han
- National Chinmedomics Research Center, National TCM Key Laboratory of Serum Pharmacochemistry, Metabolomics Laboratory, Department of Pharmaceutical Analysis, Heilongjiang University of Chinese Medicine, Heping Road 24, Harbin, China
| | - Jie Zhang
- Wusuli River Pharmaceutical Co., Ltd., Heilongjiang, China
| | - Xijun Wang
- National Chinmedomics Research Center, National TCM Key Laboratory of Serum Pharmacochemistry, Metabolomics Laboratory, Department of Pharmaceutical Analysis, Heilongjiang University of Chinese Medicine, Heping Road 24, Harbin, China; State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macau; State Key Laboratory of Dampness Syndrome, The Second Affiliated Hospital Guangzhou University of Chinese Medicine, Dade Road 111, Guangzhou, China.
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Wang Z, Li S, Zuo C, Qin J, Wu D. Correlation Between Rapid Eye Movement Sleep Duration and Laryngopharyngeal Reflux in Patients with Obstructive Sleep Apnea. EAR, NOSE & THROAT JOURNAL 2023:1455613231214653. [PMID: 37997618 DOI: 10.1177/01455613231214653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2023] Open
Abstract
Objectives: The aim of this study was to investigate the correlation between rapid eye movement (REM) sleep duration and laryngopharyngeal reflux (LPR) in patients with obstructive sleep apnea (OSA). Methods: In all, 99 patients with OSA were enrolled in this study, and the correlation between REM sleep duration and the severity of LPR was analyzed after the polysomnography (PSG) and reflux symptom index (RSI) scores were completed. Subsequently, a multiple linear regression analysis was performed to further clarify the factors affecting LPR. Results: Partial correlation analysis showed that the REM sleep duration was positively correlated with the RSI scores (r = 0.236, P = .022) after controlling for apnea-hypopnea index (AHI), body mass index (BMI), lowest oxygen saturation (LSO2), age, and sex. The multiple linear regression analysis indicated that only REM sleep duration was a factor influencing LPR (t = 2.330, P = .022). Conclusions: Our study found a correlation between REM sleep duration and LPR in OSA patients. The shorter the REM sleep duration, the less severe the LPR symptoms.
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Affiliation(s)
- Zhe Wang
- Postgraduate Training Base of Jinzhou Medical University in the General Hospital of Northern Theater Command, Jinzhou, China
- Department of Otolaryngology, General Hospital of Northern Theater Command, Shenyang, China
| | - Shuhua Li
- Department of Otolaryngology, General Hospital of Northern Theater Command, Shenyang, China
| | - Chengcheng Zuo
- Department of Otolaryngology, General Hospital of Northern Theater Command, Shenyang, China
- Postgraduate Training Base of Dalian Medical University in the General Hospital of Northern Theater Command, Dalian, China
| | - Jie Qin
- Department of Otolaryngology, General Hospital of Northern Theater Command, Shenyang, China
| | - Dahai Wu
- Department of Otolaryngology, General Hospital of Northern Theater Command, Shenyang, China
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De Moraes ACF, Medeiros-Oliveira VC, Burford K, Schaan BD, Bloch K, de Carvalho KMB, Cureau FV, Nascimento-Ferreira MV. Association Between Sleep Time and Pro- and Anti-Inflammatory Biomarkers Is Mediated by Abdominal Obesity Among Adolescents. J Phys Act Health 2023; 20:926-933. [PMID: 37295784 DOI: 10.1123/jpah.2022-0468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 04/03/2023] [Accepted: 04/27/2023] [Indexed: 06/12/2023]
Abstract
OBJECTIVES Movement behaviors and abdominal obesity are associated with higher inflammatory biomarkers. However, the role of waist circumference as a mediating factor is still unknown. Thus, our aims were to (1) test the associations between 24-hour movement behavior variables (physical activity, sedentary behavior, and sleep), abdominal obesity, and pro- and anti-inflammatory biomarkers; and (2) investigate whether abdominal obesity had a mediating effect between the investigated associations. METHODS This multicenter cross-sectional study included 3591 adolescents (aged 12-17 y) from 4 Brazilian cities. Waist circumference (in centimeters; at half the distance between the iliac crest and at the lower costal margin), 24-hour movement behaviors (validated questionnaire), high-sensitive C-reactive protein, and adiponectin (serum plasma) were evaluated. We used multiple mediation regression models (95% confidence interval) to determine if waist circumference mediated the association between 24-hour movement behaviors and pro- and anti-inflammatory biomarkers. RESULTS The results revealed that screen time and moderate to vigorous physical activity were not associated with pro- or anti-inflammatory biomarkers. However, sleep duration (in hours per day) was negatively associated with pro- (C-reactive protein, β = -0.08; 95% confidence interval, -0.38 to -0.02) and anti- (adiponectin, β = -0.31; 95% confidence interval, -2.13 to -0.12) inflammatory biomarkers. Our results also showed that waist circumference mediated the association between sleep duration and high-sensitive C-reactive protein (2.7%), and adiponectin (2.8%). CONCLUSION Sleep duration was inversely associated with pro- and anti-inflammatory biomarkers, and these relations were mediated by abdominal obesity. Therefore, adolescents having healthy sleep can have implications for reducing waist circumference and inflammatory indicators.
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Affiliation(s)
- Augusto César Ferreira De Moraes
- The University of Texas Health Science Center at Houston School of Public Health Austin Campus, Department of Epidemiology, Human Genetics, and Environmental Science, Michael & Susan Dell Center for Healthy Living, Austin, TX,USA
- Department of Epidemiology, Graduate Program in Public Health and Graduate Program in Epidemiology, School of Public Health, University of Sao Paulo, Sao Paulo, SP,Brazil
- YCARE (Youth/Child and cArdiovascular Risk and Environmental) Research Group, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP,Brazil
| | - Vanessa Cassia Medeiros-Oliveira
- Department of Epidemiology, Graduate Program in Public Health and Graduate Program in Epidemiology, School of Public Health, University of Sao Paulo, Sao Paulo, SP,Brazil
- YCARE (Youth/Child and cArdiovascular Risk and Environmental) Research Group, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP,Brazil
| | - Katie Burford
- The University of Texas Health Science Center at Houston School of Public Health Austin Campus, Department of Epidemiology, Human Genetics, and Environmental Science, Michael & Susan Dell Center for Healthy Living, Austin, TX,USA
| | - Beatriz D Schaan
- Faculty of Medicine, Graduate Program in Cardiology and Cardiovascular Sciences, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS,Brazil
- Endocrine Division, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS,Brazil
- Faculty of Medicine, Graduate Program in Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS,Brazil
| | - Katia Bloch
- Instituto de Estudos em Saúde Coletiva, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ,Brazil
| | | | - Felipe Vogt Cureau
- Graduate Program in Cardiology and Cardiovascular Sciences, School of Medicine, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS,Brazil
| | - Marcus Vinicius Nascimento-Ferreira
- YCARE (Youth/Child and cArdiovascular Risk and Environmental) Research Group, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, SP,Brazil
- HEALth, pHYsical activity and Behavior ReseArch (HEALTHY-BRA) group, Federal University of Tocantins, Campus Miracema, Miracema, TO,Brazil
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Crocco P, Vecchie D, Gopalkrishna S, Dato S, Passarino G, Young ME, Nagareddy PR, Rose G, De Luca M. Syndecan-4 as a genetic determinant of the metabolic syndrome. Diabetol Metab Syndr 2023; 15:156. [PMID: 37461091 PMCID: PMC10351106 DOI: 10.1186/s13098-023-01132-8] [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: 06/22/2023] [Accepted: 07/03/2023] [Indexed: 07/21/2023] Open
Abstract
BACKGROUND Syndecan-4 (SDC4) is a member of the heparan sulfate proteoglycan family of cell-surface receptors. We and others previously reported that variation in the SDC4 gene was associated with several components of the metabolic syndrome, including intra-abdominal fat, fasting glucose and triglyceride levels, and hypertension, in human cohorts. Additionally, we demonstrated that high fat diet (HFD)-induced obese female mice with a Sdc4 genetic deletion had higher visceral adiposity and a worse metabolic profile than control mice. Here, we aimed to first investigate whether the mouse Sdc4 null mutation impacts metabolic phenotypes in a sex- and diet-dependent manner. We then tested whether SDC4 polymorphisms are related to the metabolic syndrome (MetS) in humans. METHODS For the mouse experiment, Sdc4-deficient (Sdc4-/-) and wild-type (WT) mice were treated with 14-weeks of low-fat diet (LFD). Body composition, energy balance, and selected metabolic phenotypes were assessed. For the human genetic study, we used logistic regression models to test 11 SDC4 SNPs for association with the MetS and its components in a cohort of 274 (113 with MetS) elderly subjects from southern Italy. RESULTS Following the dietary intervention in mice, we observed that the effects of the Sdc4 null mutation on several phenotypes were different from those previously reported in the mice kept on an HFD. Nonetheless, LFD-fed female Sdc4-/- mice, but not males, displayed higher levels of triglycerides and lower insulin sensitivity at fasting than WT mice, as seen earlier in the HFD conditions. In the parallel human study, we found that carriers of SDC4 rs2228384 allele C and rs2072785 allele T had reduced risk of MetS. The opposite was true for carriers of the SDC4 rs1981429 allele G. Additionally, the SNPs were found related to fasting triglyceride levels and triglyceride glucose (TyG) index, a reliable indicator of insulin resistance, with sex-stratified analysis detecting the association of rs1981429 with these phenotypes only in females. CONCLUSIONS Altogether, our results suggest that SDC4 is an evolutionary conserved genetic determinant of MetS and that its genetic variation is associated with fasting triglyceride levels in a female-specific manner.
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Affiliation(s)
- Paolina Crocco
- Department of Biology, Ecology, and Earth Sciences, University of Calabria, Rende, 87036, Italy
| | - Denise Vecchie
- Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, AL, 35294, USA
| | - Sreejit Gopalkrishna
- Department of Surgery, Division of Cardiac Surgery, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Serena Dato
- Department of Biology, Ecology, and Earth Sciences, University of Calabria, Rende, 87036, Italy
| | - Giuseppe Passarino
- Department of Biology, Ecology, and Earth Sciences, University of Calabria, Rende, 87036, Italy
| | - Martin E Young
- Division of Cardiovascular Diseases, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, 35294, USA
| | - Prabhakara R Nagareddy
- Department of Surgery, Division of Cardiac Surgery, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Giuseppina Rose
- Department of Biology, Ecology, and Earth Sciences, University of Calabria, Rende, 87036, Italy.
| | - Maria De Luca
- Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, AL, 35294, USA.
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Chang CH, Wu HC, Hsieh YR, Lai WD, Tung TH, Huang JJ, Kao WY, Huang SY. Modulatory effect of n-3 polyunsaturated fatty acids on depressive-like behaviors in rats with chronic sleep deprivation: potential involvement of melatonin receptor pathway and brain lipidome. Food Funct 2023. [PMID: 37334912 DOI: 10.1039/d3fo01452e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2023]
Abstract
Clinical evidence suggests that a bidirectional relationship is present between sleep loss and psychiatric disorders. Both melatonin receptor agonist ramelteon (RMT) and n-3 polyunsaturated fatty acids (n-3 PUFAs) exhibit antidepressant effects, while their underlying molecular mechanisms might be different. Thus, the present study aims to investigate the add-on effects and possible mechanisms of how RMT and different n-3 PUFAs modulate the melatonin receptor pathway as well as brain lipidome to ameliorate the neuropsychiatric behaviors displayed in rats under chronic sleep deprivation. Thirty-one 6-week-old male Wistar rats were divided into five groups: control (C), sleep deprivation (S), sleep deprivation treated with RMT (SR), sleep deprivation treated with RMT and eicosapentaenoic acid (C20:5n-3, EPA) (SRE), and sleep deprivation treated with RMT and docosahexaenoic acid (C22:6n-3, DHA) (SRD) groups. The results reveal that RMT plus EPA alleviated depressive-like behavior when the rats were subjected to the forced swimming test, whereas RMT plus DHA alleviated anxiety-like behavior when the rats were subjected to the elevated plus maze test. The results of a western blot analysis further revealed that compared with the rats in the S group, those in the SRE and SRD groups exhibited a significantly increased expression of MT2 in the prefrontal cortex, with greater benefits observed in the SRE group. In addition, decreased BDNF and TrkB expression levels were upregulated only in the SRE group. Lipidomic analysis further revealed possible involvement of aberrant lipid metabolism and neuropsychiatric behaviors. RMT plus EPA demonstrated promise as having the effects of reversing the levels of the potential biomarkers of depressive-like behaviors. RMT plus EPA or DHA could ameliorate depressive- and anxiety-like behaviors in sleep-deprived rats through the alteration of the lipidome and MT2 receptor pathway in the brain, whereas EPA and DHA exerted a differential effect.
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Affiliation(s)
- Chia-Hsuan Chang
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei, Taiwan.
- Diet and Nutrition Department, Shuang Ho Hospital, Taipei Medical University, New Taipei, Taiwan
| | - Hua-Chien Wu
- Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Yin-Ru Hsieh
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei, Taiwan.
| | - Wen-De Lai
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei, Taiwan.
| | - Te-Hsuan Tung
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei, Taiwan.
| | - Jun-Jie Huang
- Diet and Nutrition Department, Shuang Ho Hospital, Taipei Medical University, New Taipei, Taiwan
| | - Wei-Yu Kao
- Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei, Taiwan
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Taipei Medical University Hospital, Taipei, Taiwan
- TMU Research Center for Digestive Medicine, Taipei Medical University, Taipei, Taiwan
- Nutrition Research Center, Taipei Medical University Hospital, Taipei, Taiwan
| | - Shih-Yi Huang
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei, Taiwan.
- Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei, Taiwan
- TMU Research Center for Digestive Medicine, Taipei Medical University, Taipei, Taiwan
- Nutrition Research Center, Taipei Medical University Hospital, Taipei, Taiwan
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Li Y, Zhou X, Cheng C, Ding G, Zhao P, Tan K, Chen L, Perrimon N, Veenstra JA, Zhang L, Song W. Gut AstA mediates sleep deprivation-induced energy wasting in Drosophila. Cell Discov 2023; 9:49. [PMID: 37221172 DOI: 10.1038/s41421-023-00541-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 03/13/2023] [Indexed: 05/25/2023] Open
Abstract
Severe sleep deprivation (SD) has been highly associated with systemic energy wasting, such as lipid loss and glycogen depletion. Despite immune dysregulation and neurotoxicity observed in SD animals, whether and how the gut-secreted hormones participate in SD-induced disruption of energy homeostasis remains largely unknown. Using Drosophila as a conserved model organism, we characterize that production of intestinal Allatostatin A (AstA), a major gut-peptide hormone, is robustly increased in adult flies bearing severe SD. Interestingly, the removal of AstA production in the gut using specific drivers significantly improves lipid loss and glycogen depletion in SD flies without affecting sleep homeostasis. We reveal the molecular mechanisms whereby gut AstA promotes the release of an adipokinetic hormone (Akh), an insulin counter-regulatory hormone functionally equivalent to mammalian glucagon, to mobilize systemic energy reserves by remotely targeting its receptor AstA-R2 in Akh-producing cells. Similar regulation of glucagon secretion and energy wasting by AstA/galanin is also observed in SD mice. Further, integrating single-cell RNA sequencing and genetic validation, we uncover that severe SD results in ROS accumulation in the gut to augment AstA production via TrpA1. Altogether, our results demonstrate the essential roles of the gut-peptide hormone AstA in mediating SD-associated energy wasting.
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Affiliation(s)
- Yingge Li
- Department of Hepatobiliary and Pancreatic Surgery, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, Hubei, China
- TaiKang Center for Life and Medical Sciences, Wuhan University, Wuhan, Hubei, China
| | - Xiaoya Zhou
- Department of Hepatobiliary and Pancreatic Surgery, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, Hubei, China
- TaiKang Center for Life and Medical Sciences, Wuhan University, Wuhan, Hubei, China
| | - Chen Cheng
- Department of Hepatobiliary and Pancreatic Surgery, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, Hubei, China
- TaiKang Center for Life and Medical Sciences, Wuhan University, Wuhan, Hubei, China
| | - Guangming Ding
- Department of Hepatobiliary and Pancreatic Surgery, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, Hubei, China
- TaiKang Center for Life and Medical Sciences, Wuhan University, Wuhan, Hubei, China
| | - Peng Zhao
- Department of Hepatobiliary and Pancreatic Surgery, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, Hubei, China
- TaiKang Center for Life and Medical Sciences, Wuhan University, Wuhan, Hubei, China
| | - Kai Tan
- Department of Hepatobiliary and Pancreatic Surgery, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, Hubei, China
| | - Lixia Chen
- Key Laboratory of Molecular Biophysics of Ministry of Education, Hubei Bioinformatics and Molecular Imaging Key Laboratory, Center for Artificial Intelligence Biology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Norbert Perrimon
- Department of Genetics, Howard Hughes Medical Institute, Harvard Medical School, Boston, MA, USA
| | - Jan A Veenstra
- INCIA, UMR 5287 CNRS, University of Bordeaux, Talence, France
| | - Luoying Zhang
- Key Laboratory of Molecular Biophysics of Ministry of Education, Hubei Bioinformatics and Molecular Imaging Key Laboratory, Center for Artificial Intelligence Biology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Wei Song
- Department of Hepatobiliary and Pancreatic Surgery, Medical Research Institute, Frontier Science Center of Immunology and Metabolism, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, Hubei, China.
- TaiKang Center for Life and Medical Sciences, Wuhan University, Wuhan, Hubei, China.
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Hebebrand J, Denecke S, Antel J. The Role of Leptin in Rodent and Human Sleep: A Transdiagnostic Approach with a Particular Focus on Anorexia Nervosa. Neurosci Biobehav Rev 2023; 149:105164. [PMID: 37031924 DOI: 10.1016/j.neubiorev.2023.105164] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 02/16/2023] [Accepted: 04/06/2023] [Indexed: 04/11/2023]
Abstract
This narrative review addressed to both clinicians and researchers aims to assess the role of hypoleptinemia in disordered sleep with a particular focus on patients with anorexia nervosa (AN). After introducing circadian rhythms and the regulation of circulating leptin, we summarize the literature on disordered sleep in patients with AN and in fasting subjects in general. We highlight novel single-case reports of substantially improved sleep within days after initiation of off-label metreleptin treatment. These beneficial effects are set in relationship to current knowledge of disordered sleep in animal models of an impaired leptin signaling. Specifically, both absolute and relative hypoleptinemia play a major role in animal models for insomnia, obstructive sleep apnea and obesity hypoventilation syndrome. We pinpoint future research required to complement our understanding of the role of leptin in sleep in patients with acute AN. Moreover, within the section clinical applications we speculate that human recombinant leptin may be useful for the treatment of treatment-resistant sleep-wake disorders, which are associated with (relative) hypoleptinemia. Overall, we stress the role of the hormone leptin in sleep.
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Affiliation(s)
- Johannes Hebebrand
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, Centre for Translational Neuro- and Behavioral Sciences, University Hospital Essen, University of Duisburg-Essen, Germany
| | - Saskia Denecke
- Department of Clinical Psychology and Psychotherapy, University of Hamburg, Germany
| | - Jochen Antel
- Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, Centre for Translational Neuro- and Behavioral Sciences, University Hospital Essen, University of Duisburg-Essen, Germany
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Duan D, Kim LJ, Jun JC, Polotsky VY. Connecting insufficient sleep and insomnia with metabolic dysfunction. Ann N Y Acad Sci 2023; 1519:94-117. [PMID: 36373239 PMCID: PMC9839511 DOI: 10.1111/nyas.14926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The global epidemic of obesity and type 2 diabetes parallels the rampant state of sleep deprivation in our society. Epidemiological studies consistently show an association between insufficient sleep and metabolic dysfunction. Mechanistically, sleep and circadian rhythm exert considerable influences on hormones involved in appetite regulation and energy metabolism. As such, data from experimental sleep deprivation in humans demonstrate that insufficient sleep induces a positive energy balance with resultant weight gain, due to increased energy intake that far exceeds the additional energy expenditure of nocturnal wakefulness, and adversely impacts glucose metabolism. Conversely, animal models have found that sleep loss-induced energy expenditure exceeds caloric intake resulting in net weight loss. However, animal models have significant limitations, which may diminish the clinical relevance of their metabolic findings. Clinically, insomnia disorder and insomnia symptoms are associated with adverse glucose outcomes, though it remains challenging to isolate the effects of insomnia on metabolic outcomes independent of comorbidities and insufficient sleep durations. Furthermore, both pharmacological and behavioral interventions for insomnia may have direct metabolic effects. The goal of this review is to establish an updated framework for the causal links between insufficient sleep and insomnia and risks for type 2 diabetes and obesity.
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Affiliation(s)
- Daisy Duan
- Division of Endocrinology, Diabetes, and Metabolism; Department of Medicine; Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Lenise J. Kim
- Division of Pulmonary and Critical Care; Department of Medicine; Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Jonathan C. Jun
- Division of Pulmonary and Critical Care; Department of Medicine; Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Vsevolod Y. Polotsky
- Division of Pulmonary and Critical Care; Department of Medicine; Johns Hopkins University School of Medicine, Baltimore, Maryland
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10
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Ensminger DC, Wheeler ND, Al Makki R, Eads KN, Ashley NT. Contrasting effects of sleep fragmentation and angiotensin-II treatment upon pro-inflammatory responses of mice. Sci Rep 2022; 12:14763. [PMID: 36042284 PMCID: PMC9427781 DOI: 10.1038/s41598-022-19166-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 08/25/2022] [Indexed: 11/30/2022] Open
Abstract
Disordered sleep promotes inflammation in brain and peripheral tissues, but the mechanisms that regulate these responses are poorly understood. One hypothesis is that activation of the sympathetic nervous system (SNS) from sleep loss elevates blood pressure to promote vascular sheer stress leading to inflammation. As catecholamines produced from SNS activation can directly regulate inflammation, we pharmacologically altered blood pressure using an alternative approach-manipulation of the renin-angiotensin system (RAS). Male C57BL6/J mice were treated with angiotensin or captopril to elevate and reduce blood pressure, respectively and then exposed to 24-h of sleep fragmentation (SF) or allowed to sleep (control). Pro- and anti-inflammatory cytokine gene expression and as endothelial adhesion gene expression as well as serum glucocorticoids (corticosterone) were measured. RAS manipulation elevated cytokines and endothelial adhesion expression in heart and aorta while SF increased cytokine expression in peripheral tissues, but not brain. However, there were interactive effects of angiotensin-II and SF upon cytokine gene expression in hippocampus and hypothalamus, but not prefrontal cortex. SF, but not RAS manipulation, elevated serum corticosterone concentration. These findings highlight the contrasting effects of RAS manipulation and SF, implying that inflammation from SF is acting on different pathways that are largely independent of RAS manipulation.
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Affiliation(s)
- David C Ensminger
- Department of Biology, Western Kentucky University, Bowling Green, KY, USA. .,Department of Biological Sciences, San José State University, San Jose, CA, USA.
| | - Nicholas D Wheeler
- Department of Biology, Western Kentucky University, Bowling Green, KY, USA.,College of Veterinary Medicine, Mississippi State University, Starkville, MS, USA
| | - Reem Al Makki
- Department of Biological Sciences, San José State University, San Jose, CA, USA
| | - Kristen N Eads
- School of Physician Assistant Studies, Lipscomb University, Nashville, TN, USA
| | - Noah T Ashley
- Department of Biology, Western Kentucky University, Bowling Green, KY, USA
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11
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Ramírez-Plascencia OD, Saderi N, Cárdenas-Romero S, García-García F, Peña-Escudero C, Flores-Sandoval O, Azuara-Álvarez L, Báez-Ruiz A, Salgado-Delgado R. Leptin and adiponectin regulate the activity of nuclei involved in sleep-wake cycle in male rats. Front Neurosci 2022; 16:907508. [PMID: 35937866 PMCID: PMC9355486 DOI: 10.3389/fnins.2022.907508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Accepted: 07/04/2022] [Indexed: 11/13/2022] Open
Abstract
Epidemiological and experimental evidence recognize a relationship between sleep-wake cycles and adiposity levels, but the mechanisms that link both are not entirely understood. Adipose tissue secretes adiponectin and leptin hormones, mainly involved as indicators of adiposity levels and recently associated to sleep. To understand how two of the main adipose tissue hormones could influence sleep-wake regulation, we evaluated in male rats, the effect of direct administration of adiponectin or leptin in the ventrolateral preoptic nuclei (VLPO), a major area for sleep promotion. The presence of adiponectin (AdipoR1 and AdipoR2) and leptin receptors in VLPO were confirmed by immunohistochemistry. Adiponectin administration increased wakefulness during the rest phase, reduced delta power, and activated wake-promoting neurons, such as the locus coeruleus (LC), tuberomammillary nucleus (TMN) and hypocretin/orexin neurons (OX) within the lateral hypothalamus (LH) and perifornical area (PeF). Conversely, leptin promoted REM and NREM sleep, including increase of delta power during NREM sleep, and induced c-Fos expression in VLPO and melanin concentrating hormone expressing neurons (MCH). In addition, a reduction in wake-promoting neurons activity was found in the TMN, lateral hypothalamus (LH) and perifornical area (PeF), including in the OX neurons. Moreover, leptin administration reduced tyrosine hydroxylase (TH) immunoreactivity in the LC. Our data suggest that adiponectin and leptin act as hormonal mediators between the status of body energy and the regulation of the sleep-wake cycle.
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Affiliation(s)
- Oscar Daniel Ramírez-Plascencia
- Departamento de Fisiología Celular, Facultad de Ciencias, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
- Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, United States
| | - Nadia Saderi
- Departamento de Fisiología Celular, Facultad de Ciencias, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
| | - Skarleth Cárdenas-Romero
- Departamento de Fisiología Celular, Facultad de Ciencias, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
| | - Fabio García-García
- Departamento de Biomedicina, Instituto de Ciencias de la Salud, Universidad Veracruzana, Veracruz, Mexico
| | - Carolina Peña-Escudero
- Departamento de Biomedicina, Instituto de Ciencias de la Salud, Universidad Veracruzana, Veracruz, Mexico
| | - Omar Flores-Sandoval
- Departamento de Fisiología Celular, Facultad de Ciencias, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
| | - Lucia Azuara-Álvarez
- Departamento de Fisiología Celular, Facultad de Ciencias, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
| | - Adrián Báez-Ruiz
- Departamento de Fisiología Celular, Facultad de Ciencias, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
| | - Roberto Salgado-Delgado
- Departamento de Fisiología Celular, Facultad de Ciencias, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
- *Correspondence: Roberto Salgado-Delgado,
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12
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Huang B, Sun B, Yang R, Liang S, Li X, Guo Y, Meng Q, Fu Y, Li W, Zhao P, Gong M, Shi Y, Song L, Wang S, Yuan F, Shi H. Long-lasting effects of postweaning sleep deprivation on cognitive function and social behaviors in adult mice. Neuropharmacology 2022; 215:109164. [PMID: 35716724 DOI: 10.1016/j.neuropharm.2022.109164] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 05/21/2022] [Accepted: 06/08/2022] [Indexed: 10/18/2022]
Abstract
Sleep deprivation (SD) has adverse effects on physical and mental health. Recently increasing attention has been given to SD in the early-life stage. However, the effects and mechanisms of postweaning SD on cognitive function and social behaviors are still unclear. In this study, SD was conducted in mice from postnatal Day 21 (PND21) to PND42, 6 h a day. Meanwhile, changes in body weight, food and water intake were continuously monitored. Behavioral tests were carried out in adulthood of mice. The levels of serum corticosterone, the proinflammatory cytokines interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF-α), and the anti-inflammatory cytokines interleukin-10 (IL-10), vasopressin (VP) and oxytocin (OT) were measured by ELISA. Golgi staining was used to calculate neural dendritic spine density in the dorsal hippocampus (dHPC) CA1 region and medial prefrontal cortex (mPFC). We found that postweaning SD increased the food intake and the weight of female mice. Behavioral results showed that postweaning SD caused cognitive impairment and lowered social dominance in adult male mice but not in female mice. ELISA results showed that SD increased the levels of serum corticosterone, VP and OT in male mice and serum OT in female mice. Golgi staining analysis showed that SD decreased neural dendritic spine density in the dHPC in male mice. These results suggest that postweaning SD has a long-term effect on social dominance and cognitive function in male mice, which may provide a new insight into the role of SD in regulating cognitive function and social behaviors.
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Affiliation(s)
- Boya Huang
- Neuroscience Research Center, Institute of Medical and Health Science, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, 050017, China
| | - Binhuang Sun
- Neuroscience Research Center, Institute of Medical and Health Science, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, 050017, China
| | - Rui Yang
- Neuroscience Research Center, Institute of Medical and Health Science, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, 050017, China
| | - Shihao Liang
- Neuroscience Research Center, Institute of Medical and Health Science, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, 050017, China
| | - Xinrui Li
- Neuroscience Research Center, Institute of Medical and Health Science, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, 050017, China
| | - Yi Guo
- Neuroscience Research Center, Institute of Medical and Health Science, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, 050017, China
| | - Qian Meng
- Neuroscience Research Center, Institute of Medical and Health Science, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, 050017, China
| | - Yaling Fu
- Neuroscience Research Center, Institute of Medical and Health Science, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, 050017, China
| | - Wenshuya Li
- Neuroscience Research Center, Institute of Medical and Health Science, Hebei Medical University, Shijiazhuang, 050017, China
| | - Penghui Zhao
- Neuroscience Research Center, Institute of Medical and Health Science, Hebei Medical University, Shijiazhuang, 050017, China
| | - Miao Gong
- Neuroscience Research Center, Institute of Medical and Health Science, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, 050017, China
| | - Yun Shi
- Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medicinal University, Shijiazhuang, 050017, China
| | - Li Song
- Neuroscience Research Center, Institute of Medical and Health Science, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, 050017, China; Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medicinal University, Shijiazhuang, 050017, China
| | - Sheng Wang
- Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, 050017, China
| | - Fang Yuan
- Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, 050017, China
| | - Haishui Shi
- Neuroscience Research Center, Institute of Medical and Health Science, Hebei Medical University, Shijiazhuang, 050017, China; Hebei Key Laboratory of Neurophysiology, Hebei Medicinal University, 050017, China; Department of Biochemistry and Molecular Biology, College of Basic Medicine, Hebei Medicinal University, Shijiazhuang, 050017, China.
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13
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Drapkina OM, Kontsevaya AV, Kalinina AM, Avdeev SM, Agaltsov MV, Alexandrova LM, Antsiferova AA, Aronov DM, Akhmedzhanov NM, Balanova YA, Balakhonova TV, Berns SA, Bochkarev MV, Bochkareva EV, Bubnova MV, Budnevsky AV, Gambaryan MG, Gorbunov VM, Gorny BE, Gorshkov AY, Gumanova NG, Dadaeva VA, Drozdova LY, Egorov VA, Eliashevich SO, Ershova AI, Ivanova ES, Imaeva AE, Ipatov PV, Kaprin AD, Karamnova NS, Kobalava ZD, Konradi AO, Kopylova OV, Korostovtseva LS, Kotova MB, Kulikova MS, Lavrenova EA, Lischenko OV, Lopatina MV, Lukina YV, Lukyanov MM, Mayev IV, Mamedov MN, Markelova SV, Martsevich SY, Metelskaya VA, Meshkov AN, Milushkina OY, Mukaneeva DK, Myrzamatova AO, Nebieridze DV, Orlov DO, Poddubskaya EA, Popovich MV, Popovkina OE, Potievskaya VI, Prozorova GG, Rakovskaya YS, Rotar OP, Rybakov IA, Sviryaev YV, Skripnikova IA, Skoblina NA, Smirnova MI, Starinsky VV, Tolpygina SN, Usova EV, Khailova ZV, Shalnova SA, Shepel RN, Shishkova VN, Yavelov IS. 2022 Prevention of chronic non-communicable diseases in Of the Russian Federation. National guidelines. КАРДИОВАСКУЛЯРНАЯ ТЕРАПИЯ И ПРОФИЛАКТИКА 2022. [DOI: 10.15829/1728-8800-2022-3235] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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14
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Levine AS, Jewett DC, Kotz CM, Olszewski PK. Behavioral plasticity: Role of neuropeptides in shaping feeding responses. Appetite 2022; 174:106031. [PMID: 35395362 DOI: 10.1016/j.appet.2022.106031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 03/12/2022] [Accepted: 03/29/2022] [Indexed: 11/28/2022]
Abstract
Behavioral plasticity refers to changes occurring due to external influences on an organism, including adaptation, learning, memory and enduring influences from early life experience. There are 2 types of behavioral plasticity: "developmental", which refers to gene/environment interactions affecting a phenotype, and "activational" which refers to innate physiology and can involve structural physiological changes of the body. In this review, we focus on feeding behavior, and studies involving neuropeptides that influence behavioral plasticity - primarily opioids, orexin, neuropeptide Y, and oxytocin. In each section of the review, we include examples of behavioral plasticity as it relates to actions of these neuropeptides. It can be concluded from this review that eating behavior is influenced by a number of external factors, including time of day, type of food available, energy balance state, and stressors. The reviewed work underscores that environmental factors play a critical role in feeding behavior and energy balance, but changes in eating behavior also result from a multitude of non-environmental factors, such that there can be no single mechanism or variable that can explain ingestive behavior.
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Affiliation(s)
- Allen S Levine
- Department of Food Science and Nutrition, University of Minnesota, St. Paul, MN, 55113, USA.
| | - David C Jewett
- Department of Psychology, University of Wisconsin-Eau Claire, Eau Claire, WI, USA
| | - Catherine M Kotz
- Department of Integrative Biology and Physiology, Medical School, University of Minnesota, Minneapolis, MN, 55414, USA; Geriatric, Research, Education and Clinical Center, Minneapolis Veterans Affairs Health, Minneapolis, MN, 55417, USA
| | - Pawel K Olszewski
- Department of Food Science and Nutrition, University of Minnesota, St. Paul, MN, 55113, USA; Department of Integrative Biology and Physiology, Medical School, University of Minnesota, Minneapolis, MN, 55414, USA; Faculty of Science and Engineering, University of Waikato, Hamilton, 3240, New Zealand
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15
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Lai WD, Tung TH, Teng CY, Chang CH, Chen YC, Huang HY, Lee HC, Huang SY. Fish oil ameliorates neuropsychiatric behaviors and gut dysbiosis by elevating selected microbiota-derived metabolites and tissue tight junctions in rats under chronic sleep deprivation. Food Funct 2022; 13:2662-2680. [PMID: 35170619 DOI: 10.1039/d2fo00181k] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Neuropsychiatric behaviors caused by sleep deprivation (SD) are severe public health problems in modern society worldwide. This study investigated the effect of fish oil on neuropsychiatric behaviors, barrier injury, microbiota dysbiosis, and microbiota-derived metabolites in SD rats. The rats subjected to SD had significantly elevated blood levels of corticosteroid and lipopolysaccharides and exhibited anxiety-like behavior in the open field test, depression-like behavior in the forced swim test, and cognitive impairment in the Morris water maize test. We observed that the upregulation of proinflammatory cytokines in the SD rats resulted in colonic epithelial barrier injury including a decreased number of goblet cells and increased expression of selected tight junction proteins in the gut and brain. The gut microbiome status revealed a significant decrease in the microbial diversity in the SD rats, especially in probiotics. By contrast, a fish oil-based diet reversed SD-induced behavioral changes and improved the epithelial barrier injury and dysbiosis of the microbiota in the colon. These findings could be attributable to the increase in probiotics and short-chain fatty acid (SCFAs) production, improvement in selected intestinal barrier proteins, increase in SCFA receptor expression, and decrease in blood circulation proinflammatory status due to fish oil supplementation.
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Affiliation(s)
- Wen-De Lai
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei 110301, Taiwan.
| | - Te-Hsuan Tung
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei 110301, Taiwan.
| | - Chu-Yun Teng
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei 110301, Taiwan.
| | - Chia-Hsuan Chang
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei 110301, Taiwan.
| | - Yang-Ching Chen
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei 110301, Taiwan. .,Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei 110301, Taiwan.,Department of Family Medicine, Taipei Medical University Hospital, Taipei 110301, Taiwan.,Department of Family Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110301, Taiwan
| | - Hui-Yu Huang
- Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei 110301, Taiwan.,Nutrition Research Center, Taipei Medical University Hospital, Taipei 110301, Taiwan
| | - Hsin-Chien Lee
- Department of Psychiatry, Taipei Medical University Hospital, Taipei 110301, Taiwan.,Department of Psychiatry, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110301, Taiwan
| | - Shih-Yi Huang
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei 110301, Taiwan. .,Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei 110301, Taiwan.,Nutrition Research Center, Taipei Medical University Hospital, Taipei 110301, Taiwan
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16
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Schork IG, Manzo IA, De Oliveira MRB, da Costa FV, Young RJ, de Azevedo CS. The cyclic interaction between daytime behavior and the sleep behavior of laboratory dogs. Sci Rep 2022; 12:478. [PMID: 35013533 PMCID: PMC8748904 DOI: 10.1038/s41598-021-04502-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 12/23/2021] [Indexed: 12/16/2022] Open
Abstract
Sleep deprivation has been found to negatively affect an individual´s physical and psychological health. Sleep loss affects activity patterns, increases anxiety-like behaviors, decreases cognitive performance and is associated with depressive states. The activity/rest cycle of dogs has been investigated before, but little is known about the effects of sleep loss on the behavior of the species. Dogs are polyphasic sleepers, meaning the behavior is most observed at night, but bouts are also present during the day. However, sleep can vary with ecological and biological factors, such as age, sex, fitness, and even human presence. In this study, kennelled laboratory adult dogs' sleep and diurnal behavior were recorded during 24-h, five-day assessment periods to investigate sleep quality and its effect on daily behavior. In total, 1560 h of data were analyzed, and sleep metrics and diurnal behavior were quantified. The relationship between sleeping patterns and behavior and the effect of age and sex were evaluated using non-parametric statistical tests and GLMM modelling. Dogs in our study slept substantially less than previously reported and presented a modified sleep architecture with fewer awakenings during the night and almost no sleep during the day. Sleep loss increased inactivity, decreased play and alert behaviors, while increased time spent eating during the day. Males appeared to be more affected by sleep fragmentation than females. Different age groups also experienced different effects of sleep loss. Overall, dogs appear to compensate for the lack of sleep during the night by remaining inactive during the day. With further investigations, the relationship between sleep loss and behavior has the potential to be used as a measure of animal welfare.
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Affiliation(s)
- Ivana Gabriela Schork
- School of Sciences, Engineering and Environment, University of Salford Manchester, Salford, UK
| | - Isabele Aparecida Manzo
- Programa de Pós-Graduação em Ecologia de Biomas Tropicais, Departamento de Evolução, Biodiversidade e Meio Ambiente, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brasil
| | - Marcos Roberto Beiral De Oliveira
- Programa de Pós-Graduação em Ecologia de Biomas Tropicais, Departamento de Evolução, Biodiversidade e Meio Ambiente, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brasil
| | - Fernanda Vieira da Costa
- Programa de Pós-Graduação em Ecologia de Biomas Tropicais, Departamento de Evolução, Biodiversidade e Meio Ambiente, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brasil
| | - Robert John Young
- School of Sciences, Engineering and Environment, University of Salford Manchester, Salford, UK
| | - Cristiano Schetini de Azevedo
- Programa de Pós-Graduação em Ecologia de Biomas Tropicais, Departamento de Evolução, Biodiversidade e Meio Ambiente, Universidade Federal de Ouro Preto, Ouro Preto, Minas Gerais, Brasil.
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17
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Ai Z, He H, Wang T, Chen L, Huang C, Chen C, Xu P, Zhu G, Yang M, Song Y, Su D. Validation of the Thyrotoxicosis-associated Insomnia Model Induced by Thyroxine through Sympathetic Stimulation: Face, Construct and Predictive Perspectives. Exp Neurobiol 2021; 30:387-400. [PMID: 34983880 PMCID: PMC8752319 DOI: 10.5607/en21023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 11/10/2021] [Accepted: 11/17/2021] [Indexed: 11/25/2022] Open
Abstract
Insomnia has become a common central nervous system disease. At present, the pathogenesis of insomnia is not clear. Animal models can help us understand the pathogenesis of the disease and can be used in transformational medicine. Therefore, it is very necessary to establish an appropriate model of insomnia. Clinical data show that insomnia patients with high levels of thyroxine and often accompanied by cardiovascular problems, a common mechanism underlying all of these physiological disruptions is the sympathetic nervous system. Combined with the characteristics of chronic onset of clinical insomnia, an insomnia model induced by long-term intraperitoneal injection of thyroid hormone has been created in our laboratory. In this paper, the insomnia-like state of the model was evaluated based on three validity criteria. Face validity has been demonstrated in metabolism, the Morris water maze, electrocardiogram (ECG) and electroencephalogram (EEG). Structure validity has been proved by the results of targeted metabolomics. After treatment with diazepam, a commonly used clinical anti-insomnia drug, the above physiological and pathological disorders were reversed. The results of comprehensive analysis show that the established thyrotoxicosis-associated insomnia model meets the validity requirement to establish an appropriate animal model of insomnia. The model presented in this article might help to study pathogenetic mechanisms of clinical insomnia, as well as to test promising methods of insomnia treatment.
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Affiliation(s)
- Zhifu Ai
- Key Laboratory of depression animal model based on TCM syndrome, Jiangxi Administration of traditional Chinese Medicine, Jiangxi Key Laboratory of TCM for prevention and treatment of brain diseases with cognitive impairment, Jiangxi University of Chinese
| | - Hongwei He
- Key Laboratory of depression animal model based on TCM syndrome, Jiangxi Administration of traditional Chinese Medicine, Jiangxi Key Laboratory of TCM for prevention and treatment of brain diseases with cognitive impairment, Jiangxi University of Chinese
| | - Tingting Wang
- Key Laboratory of depression animal model based on TCM syndrome, Jiangxi Administration of traditional Chinese Medicine, Jiangxi Key Laboratory of TCM for prevention and treatment of brain diseases with cognitive impairment, Jiangxi University of Chinese
| | - Liling Chen
- Key Laboratory of depression animal model based on TCM syndrome, Jiangxi Administration of traditional Chinese Medicine, Jiangxi Key Laboratory of TCM for prevention and treatment of brain diseases with cognitive impairment, Jiangxi University of Chinese
| | - Chunhua Huang
- Key Laboratory of depression animal model based on TCM syndrome, Jiangxi Administration of traditional Chinese Medicine, Jiangxi Key Laboratory of TCM for prevention and treatment of brain diseases with cognitive impairment, Jiangxi University of Chinese
| | - Changlian Chen
- Key Laboratory of depression animal model based on TCM syndrome, Jiangxi Administration of traditional Chinese Medicine, Jiangxi Key Laboratory of TCM for prevention and treatment of brain diseases with cognitive impairment, Jiangxi University of Chinese
| | - Pengfei Xu
- Key Laboratory of depression animal model based on TCM syndrome, Jiangxi Administration of traditional Chinese Medicine, Jiangxi Key Laboratory of TCM for prevention and treatment of brain diseases with cognitive impairment, Jiangxi University of Chinese
| | - Genhua Zhu
- Key Laboratory of depression animal model based on TCM syndrome, Jiangxi Administration of traditional Chinese Medicine, Jiangxi Key Laboratory of TCM for prevention and treatment of brain diseases with cognitive impairment, Jiangxi University of Chinese
| | - Ming Yang
- Key Laboratory of depression animal model based on TCM syndrome, Jiangxi Administration of traditional Chinese Medicine, Jiangxi Key Laboratory of TCM for prevention and treatment of brain diseases with cognitive impairment, Jiangxi University of Chinese.,Key Laboratory of Modern Preparation of Traditional Chinese Medicine, Ministry of Education, State Key Lab of Innovation Drug and Efficient Energy-Saving Pharmaceutical Equipment, Jiangxi University o
| | - Yonggui Song
- Key Laboratory of depression animal model based on TCM syndrome, Jiangxi Administration of traditional Chinese Medicine, Jiangxi Key Laboratory of TCM for prevention and treatment of brain diseases with cognitive impairment, Jiangxi University of Chinese
| | - Dan Su
- Key Laboratory of depression animal model based on TCM syndrome, Jiangxi Administration of traditional Chinese Medicine, Jiangxi Key Laboratory of TCM for prevention and treatment of brain diseases with cognitive impairment, Jiangxi University of Chinese
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18
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Geuther B, Chen M, Galante RJ, Han O, Lian J, George J, Pack AI, Kumar V. High-throughput visual assessment of sleep stages in mice using machine learning. Sleep 2021; 45:6414386. [PMID: 34718812 DOI: 10.1093/sleep/zsab260] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 08/23/2021] [Indexed: 11/13/2022] Open
Abstract
STUDY OBJECTIVES Sleep is an important biological process that is perturbed in numerous diseases, and assessment its substages currently requires implantation of electrodes to carry out electroencephalogram/electromyogram (EEG/EMG) analysis. Although accurate, this method comes at a high cost of invasive surgery and experts trained to score EEG/EMG data. Here, we leverage modern computer vision methods to directly classify sleep substages from video data. This bypasses the need for surgery and expert scoring, provides a path to high-throughput studies of sleep in mice. METHODS We collected synchronized high-resolution video and EEG/EMG data in 16 male C57BL/6J mice. We extracted features from the video that are time and frequency-based and used the human expert-scored EEG/EMG data to train a visual classifier. We investigated several classifiers and data augmentation methods. RESULTS Our visual sleep classifier proved to be highly accurate in classifying wake, non-rapid eye movement sleep (NREM), and rapid eye movement sleep (REM) states, and achieves an overall accuracy of 0.92 +/- 0.05 (mean +/- SD). We discover and genetically validate video features that correlate with breathing rates, and show low and high variability in NREM and REM sleep, respectively. Finally, we apply our methods to non-invasively detect that sleep stage disturbances induced by amphetamine administration. CONCLUSIONS We conclude that machine learning based visual classification of sleep is a viable alternative to EEG/EMG based scoring. Our results will enable non-invasive high-throughput sleep studies and will greatly reduce the barrier to screening mutant mice for abnormalities in sleep.
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Affiliation(s)
- Brian Geuther
- The Jackson Laboratory, 600 Main Street, Bar Harbor, ME
| | - Mandy Chen
- The Jackson Laboratory, 600 Main Street, Bar Harbor, ME
| | - Raymond J Galante
- University of Pennsylvania, John Miclot Professor of Medicine, Division of Sleep Medicine/Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, 125 South 31st Street, Suite 2100, Philadelphia, PA
| | - Owen Han
- University of Pennsylvania, John Miclot Professor of Medicine, Division of Sleep Medicine/Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, 125 South 31st Street, Suite 2100, Philadelphia, PA
| | - Jie Lian
- University of Pennsylvania, John Miclot Professor of Medicine, Division of Sleep Medicine/Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, 125 South 31st Street, Suite 2100, Philadelphia, PA
| | - Joshy George
- The Jackson Laboratory, 600 Main Street, Bar Harbor, ME
| | - Allan I Pack
- University of Pennsylvania, John Miclot Professor of Medicine, Division of Sleep Medicine/Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, 125 South 31st Street, Suite 2100, Philadelphia, PA
| | - Vivek Kumar
- The Jackson Laboratory, 600 Main Street, Bar Harbor, ME
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19
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Rodrigues GD, Fiorelli EM, Furlan L, Montano N, Tobaldini E. Obesity and sleep disturbances: The "chicken or the egg" question. Eur J Intern Med 2021; 92:11-16. [PMID: 33994249 DOI: 10.1016/j.ejim.2021.04.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 04/12/2021] [Accepted: 04/15/2021] [Indexed: 11/19/2022]
Abstract
Obesity and sleep disturbances are common conditions in modern societies and accumulating evidence support a close bidirectional causal relationship between these two conditions. Indeed, from one side sleep loss seems to affect energy intake and expenditure through its direct effects on hormone-mediated sensations of satiety and hunger and through the influence on hedonic and psychological aspects of food consumption. Sleep deprived patients have been shown to experiment excessive daytime sleepiness, fatigue, and tiredness that, in a vicious circle, enhances physical inactivity and weight gain. On the other side, obesity is a well-known risk factor for several sleep disorders. This narrative review will discuss the main pathophysiological mechanisms that link sleep loss to obesity and metabolic syndrome with particular attention to the three most common sleep disorders (insomnia, obstructive sleep apnoea syndrome, restless leg syndrome).
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Affiliation(s)
- Gabriel Dias Rodrigues
- Department of Physiology and Pharmacology, Biomedical Institute, Fluminense Federal University, Niterói, 24210-130, Brazil; Department of Clinical Sciences and Community Health, University of Milan, 20122 Milan, Italy
| | - Elisa M Fiorelli
- Department of Internal Medicine, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - Ludovico Furlan
- Department of Emergency Medicine, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - Nicola Montano
- Department of Clinical Sciences and Community Health, University of Milan, 20122 Milan, Italy; Department of Internal Medicine, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy.
| | - Eleonora Tobaldini
- Department of Clinical Sciences and Community Health, University of Milan, 20122 Milan, Italy; Department of Internal Medicine, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
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20
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Wheeler ND, Ensminger DC, Rowe MM, Wriedt ZS, Ashley NT. Alpha- and beta- adrenergic receptors regulate inflammatory responses to acute and chronic sleep fragmentation in mice. PeerJ 2021; 9:e11616. [PMID: 34221721 PMCID: PMC8236227 DOI: 10.7717/peerj.11616] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 05/24/2021] [Indexed: 01/17/2023] Open
Abstract
Sleep is a recuperative process, and its dysregulation has cognitive, metabolic, and immunological effects that are largely deleterious to human health. Epidemiological and empirical studies have suggested that sleep fragmentation (SF) as result of obstructive sleep apnea (OSA) and other sleep abnormalities leads to pronounced inflammatory responses, which are influenced by the sympathetic nervous system (SNS). However, the underlying molecular mechanisms contributing to SNS regulation of SF-induced inflammation are not fully understood. To assess the effects of the SNS upon inflammatory responses to SF, C57BL/6j female mice were placed in automated SF chambers with horizontally moving bars across the bottom of each cage at specified intervals to disrupt sleep. Mice were first subjected to either control (no bar movement), acute sleep fragmentation (ASF), or chronic sleep fragmentation (CSF) on a 12:12-h light/dark schedule. ASF involved a bar sweep every 120 s for 24 h, whereas CSF involved a bar sweep every 120 s for 12 h (during 12 L; resting period) over a period of 4 weeks. After exposure to these conditions, mice received an intraperitoneal injection of either phentolamine (5 mg/kg BW; an α-adrenergic receptor blocker), propranolol (5 mg/kg BW; a β-adrenergic receptor blocker), or vehicle (saline). Serum corticosterone concentration, brain and peripheral cytokine (IL1β, TNFα, and TGFβ) mRNA expression, and body mass were assessed. ASF and CSF significantly elevated serum corticosterone concentrations as well as cytokine mRNA expression levels compared with controls, and mice subjected to CSF had decreased body mass relative to controls. Mice subjected to CSF and treated with phentolamine or propranolol had a greater propensity for a decrease in cytokine gene expression compared with ASF, but effects were tissue-specific. Taken together, these results suggest that both α- and β-adrenergic receptors contribute to the SNS mediation of inflammatory responses, and adrenergic antagonists may effectively mitigate tissue-specific SF-mediated inflammation.
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Affiliation(s)
- Nicholas D Wheeler
- Department of Biology, Western Kentucky University, Bowling Green, KY, United States of America.,College of Veterinary Medicine, Mississippi State University, Starkville, MS, United States of America
| | - David C Ensminger
- Department of Integrative Biology, University of California, Berkeley, Berkeley, CA, United States of America
| | - Megan M Rowe
- Department of Biology, Western Kentucky University, Bowling Green, KY, United States of America
| | - Zachary S Wriedt
- Department of Biology, Western Kentucky University, Bowling Green, KY, United States of America
| | - Noah T Ashley
- Department of Biology, Western Kentucky University, Bowling Green, KY, United States of America
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21
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Kostin A, Alam MA, McGinty D, Alam MN. Adult hypothalamic neurogenesis and sleep-wake dysfunction in aging. Sleep 2021; 44:5986548. [PMID: 33202015 DOI: 10.1093/sleep/zsaa173] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 07/22/2020] [Indexed: 12/21/2022] Open
Abstract
In the mammalian brain, adult neurogenesis has been extensively studied in the hippocampal sub-granular zone and the sub-ventricular zone of the anterolateral ventricles. However, growing evidence suggests that new cells are not only "born" constitutively in the adult hypothalamus, but many of these cells also differentiate into neurons and glia and serve specific functions. The preoptic-hypothalamic area plays a central role in the regulation of many critical functions, including sleep-wakefulness and circadian rhythms. While a role for adult hippocampal neurogenesis in regulating hippocampus-dependent functions, including cognition, has been extensively studied, adult hypothalamic neurogenic process and its contributions to various hypothalamic functions, including sleep-wake regulation are just beginning to unravel. This review is aimed at providing the current understanding of the hypothalamic adult neurogenic processes and the extent to which it affects hypothalamic functions, including sleep-wake regulation. We propose that hypothalamic neurogenic processes are vital for maintaining the proper functioning of the hypothalamic sleep-wake and circadian systems in the face of regulatory challenges. Sleep-wake disturbance is a frequent and challenging problem of aging and age-related neurodegenerative diseases. Aging is also associated with a decline in the neurogenic process. We discuss a hypothesis that a decrease in the hypothalamic neurogenic process underlies the aging of its sleep-wake and circadian systems and associated sleep-wake disturbance. We further discuss whether neuro-regenerative approaches, including pharmacological and non-pharmacological stimulation of endogenous neural stem and progenitor cells in hypothalamic neurogenic niches, can be used for mitigating sleep-wake and other hypothalamic dysfunctions in aging.
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Affiliation(s)
- Andrey Kostin
- Research Service (151A3), Veterans Affairs Greater Los Angeles Healthcare System, Sepulveda, CA
| | - Md Aftab Alam
- Research Service (151A3), Veterans Affairs Greater Los Angeles Healthcare System, Sepulveda, CA.,Department of Psychiatry, University of California, Los Angeles, CA
| | - Dennis McGinty
- Research Service (151A3), Veterans Affairs Greater Los Angeles Healthcare System, Sepulveda, CA.,Department of Psychology, University of California, Los Angeles, CA
| | - Md Noor Alam
- Research Service (151A3), Veterans Affairs Greater Los Angeles Healthcare System, Sepulveda, CA.,Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA
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22
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Greening L, Downing J, Amiouny D, Lekang L, McBride S. The effect of altering routine husbandry factors on sleep duration and memory consolidation in the horse. Appl Anim Behav Sci 2021. [DOI: 10.1016/j.applanim.2021.105229] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Espitia-Bautista E, Escobar C. Addiction-like response in brain and behavior in a rat experimental model of night-eating syndrome. Appetite 2021; 161:105112. [PMID: 33453338 DOI: 10.1016/j.appet.2021.105112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 11/04/2020] [Accepted: 01/07/2021] [Indexed: 11/28/2022]
Abstract
STUDY OBJECTIVES Individuals ailing from night eating syndrome (NES) consume more than 25% of their daily food intake during the normal sleep time, delaying their sleep or waking up in the middle of the night to eat. This study explored two experimental conditions resembling NES in Wistar rats by offering palatable food during the sleep phase, alone or combined with sleep delay. Also we explored their impact on addiction-like changes in the brain and behavior. METHODS Experiment 1 explored the brain response after a first NES-like event; experiment 2 and 3 explored addiction-like behaviors c-Fos and FosB/ΔFosB in corticolimbic regions after 4 weeks exposition to NES-like conditions and after one week of withdrawal, respectively. For all 3 experiments 6 experimental groups were used: 1. Control; 2. Restricted access (1 h) to high-sugar diet (HSD) or to 3. high-fat diet (HFD); 4., Sleep delay for 4 h (SD) (from ZT0-ZT4, rats using slow rotating wheels); 5. SD + HSD; 6. SD + HFD. RESULTS A first event of eating a palatable diet with or without SD was sufficient to stimulate c-Fos and ΔFosB. Along 4 weeks of exposure to the palatable diets rats exhibited escalation and binge eating, which was highest for the HFD. At this stage, SD did not influence behavioral changes nor the neuronal response. After one-week in withdrawal, rats exhibited craving and effort to obtain their palatable diet. The brains of rats previously exposed to sleep delay maintained high levels of FosB/ΔFosB in the accumbens shell and high c-Fos activation in the insular cortex. CONCLUSIONS In our experimental models of NES-like a HFD in the sleep phase and SD are risk factors to develop binge eating and addiction-like behaviors.
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Affiliation(s)
- Estefania Espitia-Bautista
- Facultad de Medicina, Departamento de Anatomía, Universidad Nacional Autónoma de México, 04510, México City, Mexico
| | - Carolina Escobar
- Facultad de Medicina, Departamento de Anatomía, Universidad Nacional Autónoma de México, 04510, México City, Mexico.
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24
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Brouwer A, Asare Bediako I, Paszkiewicz RL, Kolka CM, Bergman RN, Broussard JL. Impact of sleep deprivation and high-fat feeding on insulin sensitivity and beta cell function in dogs. Diabetologia 2020; 63:875-884. [PMID: 32016566 PMCID: PMC7304935 DOI: 10.1007/s00125-019-05084-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 11/06/2019] [Indexed: 12/15/2022]
Abstract
AIMS/HYPOTHESIS Insufficient sleep is increasingly recognised as a major risk factor for the development of obesity and diabetes, and short-term sleep loss in clinical studies leads to a reduction in insulin sensitivity. Sleep loss-induced metabolic impairments are clinically relevant, since reductions in insulin sensitivity after sleep loss are comparable to insulin sensitivity differences between healthy individuals and those with impaired glucose tolerance. However, the relative effects of sleep loss vs high-fat feeding in the same individual have not been assessed. In addition, to our knowledge no diurnal (active during the daytime) non-human mammalian model of sleep loss-induced metabolic impairment exists, which limits our ability to study links between sleep and metabolism. METHODS This study examined the effects of one night of total sleep deprivation on insulin sensitivity and beta cell function, as assessed by an IVGTT, before and after 9 months of high-fat feeding in a canine model. RESULTS One night of total sleep deprivation in lean dogs impaired insulin sensitivity to a similar degree as a chronic high-fat diet (HFD)(normal sleep: 4.95 ± 0.45 mU-1 l-1 min-1; sleep deprivation: 3.14 ± 0.21 mU-1 l-1 min-1; HFD: 3.74 ± 0.48 mU-1 l-1 min-1; mean ± SEM). Hyperinsulinaemic compensation was induced by the chronic HFD, suggesting adequate beta cell response to high-fat feeding. In contrast, there was no beta cell compensation after one night of sleep deprivation, suggesting that there was metabolic dysregulation with acute sleep loss that, if sustained during chronic sleep loss, could contribute to the risk of type 2 diabetes. After chronic high-fat feeding, acute total sleep deprivation did not cause further impairments in insulin sensitivity (sleep deprivation + chronic HFD: 3.28 mU-1 l-1 min-1). CONCLUSIONS/INTERPRETATION Our findings provide further evidence that sleep is important for metabolic health and establish a diurnal animal model of metabolic disruption during insufficient sleep.
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Affiliation(s)
- Annelies Brouwer
- Sleep and Metabolism Laboratory, Department of Health and Exercise Science, Colorado State University, 1582 Campus Delivery, Fort Collins, CO, 80523-1582, USA
- Amsterdam UMC, Vrije Universiteit, Department of Psychiatry, Amsterdam Public Health Research Institute, Amsterdam, the Netherlands
- GGZ inGeest Specialized Mental Health Care, Amsterdam, the Netherlands
| | - Isaac Asare Bediako
- Diabetes and Obesity Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Rebecca L Paszkiewicz
- Diabetes and Obesity Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Cathryn M Kolka
- Diabetes and Obesity Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Richard N Bergman
- Diabetes and Obesity Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Josiane L Broussard
- Sleep and Metabolism Laboratory, Department of Health and Exercise Science, Colorado State University, 1582 Campus Delivery, Fort Collins, CO, 80523-1582, USA.
- Diabetes and Obesity Research Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA.
- Division of Endocrinology, Metabolism and Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO, USA.
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25
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Mishra I, Pullum KB, Thayer DC, Plummer ER, Conkright BW, Morris AJ, O'Hara BF, Demas GE, Ashley NT. Chemical sympathectomy reduces peripheral inflammatory responses to acute and chronic sleep fragmentation. Am J Physiol Regul Integr Comp Physiol 2020; 318:R781-R789. [PMID: 32130024 DOI: 10.1152/ajpregu.00358.2019] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Sleep loss contributes to the development of cardiovascular, metabolic, and neurological disorders by promoting a systemic proinflammatory phenotype. The neuroendocrine-immune mechanisms contributing to such pathologies are poorly understood. The sympathetic nervous system (SNS) regulates immunity and is often activated following sleep disturbances. The aims of this study were to determine 1) the effect of SNS inhibition on inflammatory responses to sleep fragmentation (SF) and 2) whether homeostasis can be restored after 1 wk of recovery sleep. We measured stress responses (norepinephrine and corticosterone), gene expression levels of pro- and anti-inflammatory cytokines in peripheral (heart, liver, and spleen) tissues, and protein levels of cytokines and chemokines in serum of female mice that were subjected to acute SF for 24 h, chronic SF for 8 wk, or 7 days of recovery after chronic SF. In each experiment, SF and control mice were chemically sympathectomized with 6-hydroxydopamine (6-OHDA) or injected with vehicle. Both acute and chronic SF elevated mRNA and protein levels of cytokines in peripheral tissues. Changes in inflammatory responses mirrored stress-axes activation, with increased corticosterone and norepinephrine in SF mice. 6-OHDA treatment significantly alleviated SF-induced inflammation, thus providing evidence of SNS regulation of peripheral inflammation from SF. Effects of chronic SF were more severe than acute SF, and 1 wk of recovery from SF sufficiently alleviated peripheral inflammatory responses but not NE responses.
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Affiliation(s)
- Ila Mishra
- Department of Biology, Western Kentucky University, Bowling Green, Kentucky
| | - Keelee B Pullum
- Department of Biology, Western Kentucky University, Bowling Green, Kentucky
| | - Domnique C Thayer
- Department of Biology, Western Kentucky University, Bowling Green, Kentucky
| | - Erica R Plummer
- Department of Biology, Western Kentucky University, Bowling Green, Kentucky
| | | | - Andrew J Morris
- Department of Pharmacology, University of Kentucky, Lexington, Kentucky
| | - Bruce F O'Hara
- Department of Biology, University of Kentucky, Lexington, Kentucky
| | - Gregory E Demas
- Department of Biology, Indiana University, Bloomington, Indiana
| | - Noah T Ashley
- Department of Biology, Western Kentucky University, Bowling Green, Kentucky
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26
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Panagiotou M, Deboer T. Chronic high-caloric diet accentuates age-induced sleep alterations in mice. Behav Brain Res 2019; 362:131-139. [PMID: 30639608 DOI: 10.1016/j.bbr.2019.01.017] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 01/09/2019] [Accepted: 01/10/2019] [Indexed: 11/15/2022]
Abstract
Obesity and sleep disturbances comprise major health problems which are likely interrelated. Diet-induced obesity in young mice has been demonstrated to lead towards an altered sleep homeostasis. In the current study, we investigated the effect of chronic (12 weeks) high-caloric diet (HCD, 45% fat) consumption on sleep and the sleep electroencephalogram (EEG) in young and older mice (6-month-old, n = 9; 18-month-old, n = 8 and 24-month-old, n = 4) and compared with age-matched controls on normal chow (n = 11, n = 9 and n = 9 respectively). Half of the 24-month-old mice did not cope well with HCD, therefore this group has a lower n and limited statistical power. We recorded EEG and the electromyogram for continuous 48-h and performed a 6-h sleep deprivation during the second day. In aged HCD fed mice (18 months old) compared to young, an aging effect was still evident, characterized by decreased waking and increased NREM sleep in the dark period, decreased REM sleep during the light period, as well as increased slow-wave-activity (SWA, EEG power in NREM sleep in 0.5-4.0 Hz). Additionally, aged HCD treated mice showed increased NREM sleep and decreased waking, compared to age-matched controls, denoting an enhanced aging phenotype in the sleep architecture. Notably, an overall increase was found in the slow component of SWA (0.5-2.5 Hz) in aged HCD fed mice compared to age-matched controls. Our data suggest that the effect of aging is the dominant variable irrespective of diet. However, a synergistic effect of aging and diet is noted indicating that chronic HCD consumption exacerbates age-associated sleep alterations.
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Affiliation(s)
- M Panagiotou
- Laboratory for Neurophysiology, Department of Cell and Chemical Biology, Leiden University Medical Centre, Leiden, the Netherlands
| | - T Deboer
- Laboratory for Neurophysiology, Department of Cell and Chemical Biology, Leiden University Medical Centre, Leiden, the Netherlands.
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27
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Nascimento Ferreira MV, Goumidi L, Carvalho HB, De Moraes ACF, Santaliestra-Pasías AM, Kafatos A, Molnar D, Lambrinou CP, De Henauw S, Gutierrez A, Censi L, Marcos A, Widhalm K, Gottrand F, Gonzalez-Gross M, Meirhaeghe A, Moreno LA. Associations between REV-ERBα, sleep duration and body mass index in European adolescents. Sleep Med 2018; 46:56-60. [DOI: 10.1016/j.sleep.2018.01.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 01/17/2018] [Accepted: 01/18/2018] [Indexed: 01/06/2023]
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28
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Perron IJ, Keenan BT, Chellappa K, Lahens NF, Yohn NL, Shockley KR, Pack AI, Veasey SC. Dietary challenges differentially affect activity and sleep/wake behavior in mus musculus: Isolating independent associations with diet/energy balance and body weight. PLoS One 2018; 13:e0196743. [PMID: 29746501 PMCID: PMC5945034 DOI: 10.1371/journal.pone.0196743] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2017] [Accepted: 04/18/2018] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND AND AIMS Associated with numerous metabolic and behavioral abnormalities, obesity is classified by metrics reliant on body weight (such as body mass index). However, overnutrition is the common cause of obesity, and may independently contribute to these obesity-related abnormalities. Here, we use dietary challenges to parse apart the relative influence of diet and/or energy balance from body weight on various metabolic and behavioral outcomes. MATERIALS AND METHODS Seventy male mice (mus musculus) were subjected to the diet switch feeding paradigm, generating groups with various body weights and energetic imbalances. Spontaneous activity patterns, blood metabolite levels, and unbiased gene expression of the nutrient-sensing ventral hypothalamus (using RNA-sequencing) were measured, and these metrics were compared using standardized multivariate linear regression models. RESULTS Spontaneous activity patterns were negatively related to body weight (p<0.0001) but not diet/energy balance (p = 0.63). Both body weight and diet/energy balance predicted circulating glucose and insulin levels, while body weight alone predicted plasma leptin levels. Regarding gene expression within the ventral hypothalamus, only two genes responded to diet/energy balance (neuropeptide y [npy] and agouti-related peptide [agrp]), while others were related only to body weight. CONCLUSIONS Collectively, these results demonstrate that individual components of obesity-specifically obesogenic diets/energy imbalance and elevated body mass-can have independent effects on metabolic and behavioral outcomes. This work highlights the shortcomings of using body mass-based indices to assess metabolic health, and identifies novel associations between blood biomarkers, neural gene expression, and animal behavior following dietary challenges.
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Affiliation(s)
- Isaac J. Perron
- Center for Sleep and Circadian Neurobiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
- * E-mail: ,
| | - Brendan T. Keenan
- Center for Sleep and Circadian Neurobiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Karthikeyani Chellappa
- Institute for Diabetes, Obesity, and Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Nicholas F. Lahens
- Department of Systems Pharmacology and Translational Therapeutics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Nicole L. Yohn
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Keith R. Shockley
- Biostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina, United States of America
| | - Allan I. Pack
- Center for Sleep and Circadian Neurobiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Sigrid C. Veasey
- Center for Sleep and Circadian Neurobiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
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29
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Panagiotou M, Meijer JH, Deboer T. Chronic high-caloric diet modifies sleep homeostasis in mice. Eur J Neurosci 2018; 47:1339-1352. [PMID: 29737605 DOI: 10.1111/ejn.13932] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 03/13/2018] [Accepted: 03/15/2018] [Indexed: 11/29/2022]
Abstract
Obesity prevalence and sleep habit changes are commonplace nowadays, due to modern lifestyle. A bidirectional relationship likely exists between sleep quality and metabolic disruptions, which could impact quality of life. In our study, we investigated the effects of a chronic high-caloric diet on sleep architecture and sleep regulation in mice. We studied the effect of 3 months high-caloric diet (HCD, 45% fat) on sleep and the sleep electroencephalogram (EEG) in C57BL/6J mice during 24-hr baseline (BL) recordings, and after 6-hr sleep deprivation (SD). We examined the effect of HCD on sleep homeostasis, by performing parameter estimation analysis and simulations of the sleep homeostatic Process S, a measure of sleep pressure, which is reflected in the non-rapid-eye-movement (NREM) sleep slow-wave-activity (SWA, EEG power density between 0.5 and 4.0 Hz). Compared to controls (n = 11, 30.7 ± 0.8 g), mice fed with HCD (n = 9, 47.6 ± 0.8 g) showed an increased likelihood of consecutive NREM-REM sleep cycles, increased REM sleep and decreased NREM sleep EEG SWA. After SD, these effects were more pronounced. The simulation resulted in a close fit between the time course of SWA and Process S in both groups. HCD fed mice had a slower time constant (Ti = 15.98 hr) for the increase in homeostatic sleep pressure compared with controls (5.95 hr) indicating a reduced effect of waking on the increase in sleep pressure. Our results suggest that chronic HCD consumption impacts sleep regulation.
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Affiliation(s)
- Maria Panagiotou
- Laboratory for Neurophysiology, Department of Cell and Chemical Biology, Leiden University Medical Centre, Leiden, The Netherlands
| | - Johanna H Meijer
- Laboratory for Neurophysiology, Department of Cell and Chemical Biology, Leiden University Medical Centre, Leiden, The Netherlands
| | - Tom Deboer
- Laboratory for Neurophysiology, Department of Cell and Chemical Biology, Leiden University Medical Centre, Leiden, The Netherlands
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30
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Pigarev IN, Pigareva ML. Association of sleep impairments and gastrointestinal disorders in the context of the visceral theory of sleep. J Integr Neurosci 2018; 16:143-156. [PMID: 28891506 DOI: 10.3233/jin-170005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
It was noticed long ago that sleep disorders or interruptions to the normal sleep pattern were associated with various gastrointestinal disorders. We review the studies which established the causal link between these disorders and sleep impairment. However, the mechanism of interactions between the quality of sleep and gastrointestinal pathophysiology remained unclear. Recently, the visceral theory of sleep was formulated. This theory proposes that the same brain structures, and particularly the same cortical sensory areas, which in wakefulness are involved in processing of the exteroceptive information, switch during sleep to the processing of information coming from various visceral systems. We review the studies which demonstrated that neurons of the various cortical areas (occipital, parietal, frontal) during sleep began to fire in response to activation coming from the stomach and small intestine. These data demonstrate that, during sleep, the computational power of the central nervous system, including all cortical areas, is engaged in restoration of visceral systems. Thus, the general mechanism of the interaction between quality of sleep and health became clear.
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Affiliation(s)
- Ivan N Pigarev
- Institute for Information Transmission Problems (Kharkevich Institute), Russian Academy of Sciences, Bol'shoy Karetniy st. 19, Moscow, 127994, Russia. E-mail:
| | - Marina L Pigareva
- Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, Butlerova st. 5-a, Moscow, 117485, Russia. E-mail:
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31
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Espitia-Bautista E, Velasco-Ramos M, Osnaya-Ramírez I, Ángeles-Castellanos M, Buijs RM, Escobar C. Social jet-lag potentiates obesity and metabolic syndrome when combined with cafeteria diet in rats. Metabolism 2017. [PMID: 28641787 DOI: 10.1016/j.metabol.2017.04.006] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
BACKGROUND/OBJECTIVES Modern lifestyle promotes shifted sleep onset and shifted wake up time between weekdays and weekends, producing a condition termed "social-jet lag." Disrupted sleep promotes increased appetite for carbohydrate and fat-rich food, which in long term leads to overweight, obesity and metabolic syndrome. In order to mimic the human situation we produced an experimental model of social-jet lag (Sj-l). With this model, we explored the link between shifted sleep time with consumption of a cafeteria diet (CafD) and the development of obesity and metabolic syndrome. SUBJECTS/METHODS The first experiment was designed to create and confirm the model of Sj-l. Rats (n=8-10/group) were exposed to a shifted sleep time protocol achieved by placing the rats in slow rotating wheels from Monday to Friday during the first 4h of the light period, while on weekends they were left undisturbed. The second experiment (n=8-12/group) explored the combined effect of Sj-l with the opportunity to ingest CafD. All protocols lasted 12weeks. We evaluated the development of overweight and indicators of metabolic syndrome. The statistical significance for all variables was set at P<0.05. RESULTS Sj-l alone did not affect body weight gain but induced significant changes in cholesterol in metabolic variables representing a risk factor for metabolic syndrome. Daily restricted access to CafD in the day or night induced glucose intolerance and only CafD during the day led to overweight. Sj-l combined with CafD induced overconsumption of the diet, potentiated body weight gain (16%) and promoted 5 of the criteria for metabolic syndrome including high insulin and dislipidemia. CONCLUSION Present data provide an experimental model of social-jet lag that combined with overconsumption of CafD, and maximized the development of obesity and metabolic syndrome. Importantly, access to CafD during the night did not lead to overweight nor metabolic syndrome.
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Affiliation(s)
- Estefania Espitia-Bautista
- Facultad de Medicina, Departamento de Anatomía, Universidad Nacional Autónoma de México, México, DF 04510, Mexico
| | - Mario Velasco-Ramos
- Facultad de Medicina, Departamento de Anatomía, Universidad Nacional Autónoma de México, México, DF 04510, Mexico; Departamento de Biología Molecular, Instituto Nacional de Cardiología, 14080, México, DF, Mexico
| | - Iván Osnaya-Ramírez
- Facultad de Medicina, Departamento de Anatomía, Universidad Nacional Autónoma de México, México, DF 04510, Mexico
| | - Manuel Ángeles-Castellanos
- Facultad de Medicina, Departamento de Anatomía, Universidad Nacional Autónoma de México, México, DF 04510, Mexico
| | - Ruud M Buijs
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, México, DF 04510, Mexico
| | - Carolina Escobar
- Facultad de Medicina, Departamento de Anatomía, Universidad Nacional Autónoma de México, México, DF 04510, Mexico.
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The effects of Jiao-Tai-Wan on sleep, inflammation and insulin resistance in obesity-resistant rats with chronic partial sleep deprivation. Altern Ther Health Med 2017; 17:165. [PMID: 28335761 PMCID: PMC5364582 DOI: 10.1186/s12906-017-1648-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Accepted: 02/23/2017] [Indexed: 01/03/2023]
Abstract
Background Jiao-Tai-Wan (JTW), composed of Rhizome Coptidis and Cortex Cinnamomi, is a classical traditional Chinese prescription for treating insomnia. Several in vivo studies have concluded that JTW could exert its therapeutical effect in insomnia rats. However, the specific mechanism is still unclear. The present study aimed to explore the effect of JTW on sleep in obesity-resistant (OR) rats with chronic partial sleep deprivation (PSD) and to clarify its possible mechanism. Methods JTW was prepared and the main components contained in the granules were identified by 3D-High Performance Liquid Chromatography (3D-HPLC) assay. The Male Sprague-Dawley (SD) rats underwent 4 h PSD by environmental noise and the treatment with low and high doses of JTW orally for 4 weeks, respectively. Then sleep structure was analyzed by electroencephalographic (EEG). Inflammation markers including high-sensitivity C reactive protein (hs-CRP), tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) levels were examined in the rat plasma. Meanwhile, metabolic parameters as body weight increase rate, fasting plasma glucose (FPG), fasting insulin (FINS) levels and insulin resistance index (HOMA-IR) were measured. The expressions of clock gene cryptochromes (Cry1 and Cry2) and inflammation gene nuclear factor-κB (NF-κB) in peripheral blood monocyte cells (PBMC) were also determined. Results The result showed that the administration of JTW significantly increased total sleep time and total slow wave sleep (SWS) time in OR rats with PSD. Furthermore, the treatment with JTW reversed the increase in the markers of systemic inflammation and insulin resistance caused by sleep loss. These changes were also associated with the up-regulation of Cry1 mRNA and Cry 2 mRNA and the down-regulation of NF-κB mRNA expression in PBMC. Conclusions This study suggests that JTW has the beneficial effects of improving sleep, inflammation and insulin sensitivity. The mechanism appears to be related to the modulation of circadian clock and inflammation genes expressions in PBMC.
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Jiang SZ, Lu W, Zong XF, Ruan HY, Liu Y. Obesity and hypertension. Exp Ther Med 2016; 12:2395-2399. [PMID: 27703502 PMCID: PMC5038894 DOI: 10.3892/etm.2016.3667] [Citation(s) in RCA: 212] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 08/19/2016] [Indexed: 12/31/2022] Open
Abstract
The imbalance between energy intake and expenditure is the main cause of excessive overweight and obesity. Technically, obesity is defined as the abnormal accumulation of ≥20% of body fat, over the individual's ideal body weight. The latter constitutes the maximal healthful value for an individual that is calculated based chiefly on the height, age, build and degree of muscular development. However, obesity is diagnosed by measuring the weight in relation to the height of an individual, thereby determining or calculating the body mass index. The National Institutes of Health have defined 30 kg/m2 as the limit over which an individual is qualified as obese. Accordingly, the prevalence of obesity in on the increase in children and adults worldwide, despite World Health Organization warnings. The growth of obesity and the scale of associated health issues induce serious consequences for individuals and governmental health systems. Excessive overweight remains among the most neglected public health issues worldwide, while obesity is associated with increasing risks of disability, illness and death. Cardiovascular diseases, the leading cause of mortality worldwide, particularly hypertension and diabetes, are the main illnesses associated with obesity. Nevertheless, the mechanisms underlying obesity-associated hypertension or other associated metabolic diseases remains to be adequately investigated. In the present review, we addressed the association between obesity and cardiovascular disease, particularly the biological mechanisms linking obesity and hypertension.
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Affiliation(s)
- Shu-Zhong Jiang
- Department of Cardiology, Xuzhou Central Hospital, Xuzhou, Jiangsu 221009, P.R. China
| | - Wen Lu
- Department of Cardiology, Xuzhou Central Hospital, Xuzhou, Jiangsu 221009, P.R. China
| | - Xue-Feng Zong
- Department of Cardiology, Xuzhou Central Hospital, Xuzhou, Jiangsu 221009, P.R. China
| | - Hong-Yun Ruan
- Department of Cardiology, Xuzhou Central Hospital, Xuzhou, Jiangsu 221009, P.R. China
| | - Yi Liu
- Department of Cardiology, Xuzhou Central Hospital, Xuzhou, Jiangsu 221009, P.R. China
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Does experimental paradoxical sleep deprivation (EPSD) is an appropriate model for evaluation of cardiovascular complications of obstructive sleep apnea? Sleep Breath 2015; 20:787-93. [DOI: 10.1007/s11325-015-1299-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 11/15/2015] [Accepted: 12/16/2015] [Indexed: 10/22/2022]
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Perron IJ, Pack AI, Veasey S. Diet/Energy Balance Affect Sleep and Wakefulness Independent of Body Weight. Sleep 2015; 38:1893-903. [PMID: 26158893 DOI: 10.5665/sleep.5236] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2015] [Accepted: 06/03/2015] [Indexed: 12/19/2022] Open
Abstract
STUDY OBJECTIVES Excessive daytime sleepiness commonly affects obese people, even in those without sleep apnea, yet its causes remain uncertain. We sought to determine whether acute dietary changes could induce or rescue wake impairments independent of body weight. DESIGN We implemented a novel feeding paradigm that generates two groups of mice with equal body weight but opposing energetic balance. Two subsets of mice consuming either regular chow (RC) or high-fat diet (HFD) for 8 w were switched to the opposite diet for 1 w. Sleep recordings were conducted at Week 0 (baseline), Week 8 (pre-diet switch), and Week 9 (post-diet switch) for all groups. Sleep homeostasis was measured at Week 8 and Week 9. PARTICIPANTS Young adult, male C57BL/6J mice. MEASUREMENTS AND RESULTS Differences in total wake, nonrapid eye movement (NREM), and rapid eye movement (REM) time were quantified, in addition to changes in bout fragmentation/consolidation. At Week 9, the two diet switch groups had similar body weight. However, animals switched to HFD (and thus gaining weight) had decreased wake time, increased NREM sleep time, and worsened sleep/wake fragmentation compared to mice switched to RC (which were in weight loss). These effects were driven by significant sleep/wake changes induced by acute dietary manipulations (Week 8 → Week 9). Sleep homeostasis, as measured by delta power increase following sleep deprivation, was unaffected by our feeding paradigm. CONCLUSIONS Acute dietary manipulations are sufficient to alter sleep and wakefulness independent of body weight and without effects on sleep homeostasis.
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Affiliation(s)
- Isaac J Perron
- Center for Sleep and Circadian Neurobiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.,Neuroscience Graduate Group, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Allan I Pack
- Center for Sleep and Circadian Neurobiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Sigrid Veasey
- Center for Sleep and Circadian Neurobiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
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Dumaine JE, Ashley NT. Acute sleep fragmentation induces tissue-specific changes in cytokine gene expression and increases serum corticosterone concentration. Am J Physiol Regul Integr Comp Physiol 2015; 308:R1062-9. [PMID: 25876653 DOI: 10.1152/ajpregu.00049.2015] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 04/10/2015] [Indexed: 12/13/2022]
Abstract
Sleep deprivation induces acute inflammation and increased glucocorticosteroids in vertebrates, but effects from fragmented, or intermittent, sleep are poorly understood. Considering the latter is more representative of sleep apnea in humans, we investigated changes in proinflammatory (IL-1β, TNF-α) and anti-inflammatory (TGF-β1) cytokine gene expression in the periphery (liver, spleen, fat, and heart) and brain (hypothalamus, prefrontal cortex, and hippocampus) of a murine model exposed to varying intensities of sleep fragmentation (SF). Additionally, serum corticosterone was assessed. Sleep was disrupted in male C57BL/6J mice using an automated sleep fragmentation chamber that moves a sweeping bar at specified intervals (Lafayette Industries). Mice were exposed to bar sweeps every 20 s (high sleep fragmentation, HSF), 120 s (low sleep fragmentation, LSF), or the bar remained stationary (control). Trunk blood and tissue samples were collected after 24 h of SF. We predicted that HSF mice would exhibit increased proinflammatory expression, decreased anti-inflammatory expression, and elevated stress hormones in relation to LSF and controls. SF significantly elevated IL-1β gene expression in adipose tissue, heart (HSF only), and hypothalamus (LSF only) relative to controls. SF did not increase TNF-α expression in any of the tissues measured. HSF increased TGF-β1 expression in the hypothalamus and hippocampus relative to other groups. Serum corticosterone concentration was significantly different among groups, with HSF mice exhibiting the highest, LSF intermediate, and controls with the lowest concentration. This indicates that 24 h of SF is a potent inducer of inflammation and stress hormones in the periphery, but leads to upregulation of anti-inflammatory cytokines in the brain.
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Affiliation(s)
- Jennifer E Dumaine
- Department of Biology, Western Kentucky University, Bowling Green, Kentucky
| | - Noah T Ashley
- Department of Biology, Western Kentucky University, Bowling Green, Kentucky
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Chamorro R, Algarín C, Garrido M, Causa L, Held C, Lozoff B, Peirano P. Night time sleep macrostructure is altered in otherwise healthy 10-year-old overweight children. Int J Obes (Lond) 2014; 38:1120-5. [PMID: 24352291 PMCID: PMC4190838 DOI: 10.1038/ijo.2013.238] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2013] [Revised: 11/21/2013] [Accepted: 12/08/2013] [Indexed: 01/16/2023]
Abstract
OBJECTIVE Epidemiological evidence shows an inverse relationship between sleep duration and overweight/obesity risk. However, there are few polysomnographic studies that relate the organization of sleep stages to pediatric overweight (OW). We compared sleep organization in otherwise healthy OW and normal-weight (NW) 10-year-old children. SUBJECTS Polysomnographic assessments were performed in 37 NW and 59 OW children drawn from a longitudinal study beginning in infancy. Weight and height were used to evaluate body mass index (BMI) according to international criteria. Non-rapid eye movement (NREM) sleep (stages N1, N2 and N3), rapid eye movement (REM) sleep (stage R) and wakefulness (stage W) were visually scored. Sleep parameters were compared in NW and OW groups for the whole sleep period time (SPT) and for each successive third of it using independent Student's t-tests or nonparametric tests. The relationship between BMI and sleep variables was evaluated by correlation analyses controlling for relevant covariates. RESULTS The groups were similar in timing of sleep onset and offset, and sleep period time. BMI was inversely related to total sleep time (TST) and sleep efficiency. OW children showed reduced TST, sleep efficiency and stage R amount, but higher stage W amount. In analysis by thirds of the SPT, the duration of stage N3 episodes was shorter in the first third and longer in the second third in OW children as compared with NW children. CONCLUSIONS Our results show reduced sleep amount and quality in otherwise healthy OW children. The lower stage R amount and changes involving stage N3 throughout the night suggest that OW in childhood is associated with modifications not only in sleep duration, but also in the ongoing night time patterns of NREM sleep and REM sleep stages.
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Affiliation(s)
- Rodrigo Chamorro
- Sleep Laboratory, Institute of Nutrition and Food Technology (INTA), University of Chile, Santiago, Chile
| | - Cecilia Algarín
- Sleep Laboratory, Institute of Nutrition and Food Technology (INTA), University of Chile, Santiago, Chile
| | - Marcelo Garrido
- Sleep Laboratory, Institute of Nutrition and Food Technology (INTA), University of Chile, Santiago, Chile
| | - Leonardo Causa
- Electrical Engineering Department, University of Chile, Santiago, Chile
| | - Claudio Held
- Electrical Engineering Department, University of Chile, Santiago, Chile
| | - Betsy Lozoff
- Center for Human Growth and Development and Department of Pediatrics and Communicable Diseases, University of Michigan, Ann Arbor, Michigan, U.S.A
| | - Patricio Peirano
- Sleep Laboratory, Institute of Nutrition and Food Technology (INTA), University of Chile, Santiago, Chile
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Wallen GR, Minniti CP, Krumlauf M, Eckes E, Allen D, Oguhebe A, Seamon C, Darbari DS, Hildesheim M, Yang L, Schulden JD, Kato GJ, Taylor VI JG. Sleep disturbance, depression and pain in adults with sickle cell disease. BMC Psychiatry 2014; 14:207. [PMID: 25047658 PMCID: PMC4223647 DOI: 10.1186/1471-244x-14-207] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 07/10/2014] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Sleep disturbance and depression are commonly encountered in primary care. In sickle cell disease, depression is associated with pain, poor treatment compliance, and lower quality of life. The prevalence of sleep disturbance and its effect upon quality of life in adults with sickle cell disease is unknown. The goal of this study was to determine the prevalence of sleep disturbance and if it is associated with pain and depression in sickle cell disease. METHODS Three hundred twenty eight adults with sickle cell disease enrolled on the Bethesda Sickle Cell Cohort Study were assessed using the Pittsburgh Sleep Quality Index and Beck Depression Inventory II screening measures as a cross-sectional survey. Scores greater than 5 (Pittsburgh Sleep Quality Index) and 16 (Beck Depression Inventory II) defined sleep disturbance and depression, respectively. Clinical and laboratory parameters were also assessed. RESULTS The mean Pittsburgh Sleep Quality Index score was 8.4 (SD ± 4.2) indicating a 71.2% prevalence of sleep disturbance. The mean Beck Depression Inventory II score was 8.0 (SD ± 8.9). Sixty five (20.6%) participants had a score indicating depression, and half of these (10.0%) had thoughts of suicide. Both Pittsburgh Sleep Quality Index and Beck Depression Inventory II scores were significantly correlated (p < .001). The number of days with mild/moderate pain (p = .001) and a history of headaches (p = .005) were independently associated with depression by multivariate regression analysis. Patients with sleep disturbance were older (p = .002), had higher body mass index (p = .011), had more days of pain (p = .003) and more frequent severe acute painful events (emergency room visits and hospitalizations) during the previous 12 months (p < .001). CONCLUSIONS More than 70 percent of adults with sickle cell disease had sleep disturbance, while 21 percent showed evidence of clinical depression. Sleep disturbance and depression were correlated, and were most common among those with more frequent pain. Providers caring for adults with sickle cell disease and frequent pain should consider screening for these common co-morbidities. Additional study is needed to confirm these findings and to determine if treatments for pain, depression or sleep disturbances will improve quality of life measures in this patient population. TRIAL REGISTRATION ClinicalTrials.gov identifier: NCT00011648.
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Affiliation(s)
- Gwenyth R Wallen
- National Institutes of Health, Clinical Center, Bethesda, MD, USA
| | - Caterina P Minniti
- Genomic Medicine Section, Hematology Branch, National Heart, Lung and Blood Institute, National Institutes of Health, Building 10-CRC, Room 5-5140 MSC 1476, Bethesda 20892-1476 MD, USA
| | - Michael Krumlauf
- National Institutes of Health, Clinical Center, Bethesda, MD, USA
| | - Ellen Eckes
- National Institutes of Health, Clinical Center, Bethesda, MD, USA
| | - Darlene Allen
- Genomic Medicine Section, Hematology Branch, National Heart, Lung and Blood Institute, National Institutes of Health, Building 10-CRC, Room 5-5140 MSC 1476, Bethesda 20892-1476 MD, USA
| | - Anna Oguhebe
- Genomic Medicine Section, Hematology Branch, National Heart, Lung and Blood Institute, National Institutes of Health, Building 10-CRC, Room 5-5140 MSC 1476, Bethesda 20892-1476 MD, USA
| | - Cassie Seamon
- Genomic Medicine Section, Hematology Branch, National Heart, Lung and Blood Institute, National Institutes of Health, Building 10-CRC, Room 5-5140 MSC 1476, Bethesda 20892-1476 MD, USA
| | - Deepika S Darbari
- Genomic Medicine Section, Hematology Branch, National Heart, Lung and Blood Institute, National Institutes of Health, Building 10-CRC, Room 5-5140 MSC 1476, Bethesda 20892-1476 MD, USA,Center for Cancer and Blood Diseases, Children’s National Medical Center, Washington, DC, USA
| | - Mariana Hildesheim
- Genomic Medicine Section, Hematology Branch, National Heart, Lung and Blood Institute, National Institutes of Health, Building 10-CRC, Room 5-5140 MSC 1476, Bethesda 20892-1476 MD, USA
| | - Li Yang
- National Institutes of Health, Clinical Center, Bethesda, MD, USA
| | - Jeffrey D Schulden
- Division of Epidemiology, Services, and Prevention Research, National Institute of Drug Abuse, National Institutes of Health, Bethesda, MD, USA
| | - Gregory J Kato
- Genomic Medicine Section, Hematology Branch, National Heart, Lung and Blood Institute, National Institutes of Health, Building 10-CRC, Room 5-5140 MSC 1476, Bethesda 20892-1476 MD, USA
| | - James G Taylor VI
- Genomic Medicine Section, Hematology Branch, National Heart, Lung and Blood Institute, National Institutes of Health, Building 10-CRC, Room 5-5140 MSC 1476, Bethesda 20892-1476 MD, USA
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Coughlin JW, Smith MT. Sleep, obesity, and weight loss in adults: is there a rationale for providing sleep interventions in the treatment of obesity? Int Rev Psychiatry 2014; 26:177-88. [PMID: 24892893 DOI: 10.3109/09540261.2014.911150] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Rates of obesity and sleep disturbances are substantial in adults. A number of cross-sectional, longitudinal, and experimental studies have found that insufficient sleep and possibly longer sleep are associated with obesity and related eating patterns. Methodological discrepancies and limitations in the literature create ambiguity about the nature and potential mechanisms underlying these relationships. Insomnia and circadian patterns in eating and sleeping have also been examined in relation to weight. Although these studies are not as extensive as those examining sleep duration, the extant literature suggests possible associations between obesity and both insomnia (particularly when combined with short sleep duration) and circadian eating behaviours. However, research has only just begun to examine the benefits of combining sleep interventions with obesity treatment. The goal of the current review is to summarize research examining behavioural sleep patterns and disorders in relation to obesity, to discuss methodological considerations, and to provide an overview of studies examining whether addressing sleep disturbances can augment weight loss treatment effects. We conclude that future studies are needed that take into account sleep duration, sleep disorder co-morbidity, and chronobiology to explore the impact of sleep interventions on weight loss.
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Affiliation(s)
- Janelle W Coughlin
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine , Baltimore, Maryland , USA
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Borniger JC, Weil ZM, Zhang N, Nelson RJ. Dim light at night does not disrupt timing or quality of sleep in mice. Chronobiol Int 2013; 30:1016-23. [PMID: 23837748 DOI: 10.3109/07420528.2013.803196] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Artificial nighttime illumination has recently become commonplace throughout the world; however, in common with other animals, humans have not evolved in the ecological context of chronic light at night. With prevailing evidence linking the circadian, endocrine, immune, and metabolic systems, understanding these relationships is important to understanding the etiology and progression of several diseases. To eliminate the covariate of sleep disruption in light at night studies, researchers often use nocturnal animals. However, the assumption that light at night does not affect sleep in nocturnal animals remains unspecified. To test the effects of light at night on sleep, we maintained Swiss-Webster mice in standard light/dark (LD) or dim light at night (DLAN) conditions for 8-10 wks and then measured electroencephalogram (EEG) and electromyogram (EMG) biopotentials via wireless telemetry over the course of two consecutive days to determine differences in sleep timing and homeostasis. Results show no statistical differences in total percent time, number of episodes, maximum or average episode durations in wake, slow-wave sleep (SWS), or rapid eye movement (REM) sleep. No differences were evident in SWS delta power, an index of sleep drive, between groups. Mice kept in DLAN conditions showed a relative increase in REM sleep during the first few hours after the dark/light transition. Both groups displayed normal 24-h circadian rhythms as measured by voluntary running wheel activity. Groups did not differ in body mass, but a marked negative correlation of body mass with percent time spent awake and a positive correlation of body mass with time spent in SWS was evident. Elevated body mass was also associated with shorter maximum wake episode durations, indicating heavier animals had more trouble remaining in the wake vigilance state for extended periods of time. Body mass did not correlate with activity levels, nor did activity levels correlate with time spent in different sleep states. These data indicate that heavier animals tend to sleep more, potentially contributing to further weight gain. We conclude that chronic DLAN exposure does not significantly affect sleep timing or homeostasis in mice, supporting the use of dim light with nocturnal rodents in chronobiology research to eliminate the possible covariate of sleep disruption.
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Affiliation(s)
- Jeremy C Borniger
- Department of Neuroscience, The Ohio State University Wexner Medical Center, Columbus, OH 43210, USA.
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Mavanji V, Teske JA, Billington CJ, Kotz CM. Partial sleep deprivation by environmental noise increases food intake and body weight in obesity-resistant rats. Obesity (Silver Spring) 2013; 21:1396-405. [PMID: 23666828 PMCID: PMC3742663 DOI: 10.1002/oby.20182] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Accepted: 11/08/2012] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Sleep restriction in humans increases risk for obesity, but previous rodent studies show weight loss following sleep deprivation, possibly due to stressful methods used to prevent sleep. Obesity-resistant (OR) rats exhibit consolidated-sleep and resistance to weight gain. It was hypothesized that sleep disruption by a less-stressful method would increase body weight, and the effect of partial sleep deprivation (PSD) on body weight in OR and Sprague-Dawley (SD) rats was examined. DESIGN AND METHODS OR and SD rats (n = 12/group) were implanted with transmitters to record sleep/wake. After baseline recording, six SD and six OR rats underwent 8 h PSD during light phase for 9 days. Sleep was reduced using recordings of random noise. Sleep/wake states were scored as wakefulness (W), slow-wave-sleep (SWS), and rapid-eye-movement-sleep (REMS). Total number of transitions between stages, SWS-delta-power, food intake, and body weight were documented. RESULTS Exposure to noise decreased SWS and REMS time, while increasing W time. Sleep-deprivation increased the number of transitions between stages and SWS-delta-power. Further, PSD during the rest phase increased recovery sleep during the active phase. The PSD SD and OR rats had greater food intake and body weight compared to controls CONCLUSIONS PSD by less-stressful means increases body weight in rats. Also, PSD during the rest phase increases active period sleep.
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Affiliation(s)
- Vijayakumar Mavanji
- Minnesota Obesity Prevention Training Program, School of Public Health, University of Minnesota, Minneapolis, MN, USA.
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Ghrelin and its interactions with growth hormone, leptin and orexins: implications for the sleep-wake cycle and metabolism. Sleep Med Rev 2013; 18:89-97. [PMID: 23816458 DOI: 10.1016/j.smrv.2013.04.003] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Revised: 04/11/2013] [Accepted: 04/12/2013] [Indexed: 12/16/2022]
Abstract
Several studies have shown that ghrelin administration promotes wakefulness in rodents, while in human males it induces sleep but has no effect in women. Ghrelin also plays an important role in metabolism and appetite regulation, and as described in this review may participate in the energy balance during sleep. In this review, we summarize some of the effects induced by ghrelin administration on the sleep-wake cycle in relation to the effects of other hormones, such as growth hormone, leptin, and orexin. Finally we discuss the relationship between sleep deprivation, obesity and ghrelin secretion pattern.
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Pandalai SP, Schulte PA, Miller DB. Conceptual heuristic models of the interrelationships between obesity and the occupational environment. Scand J Work Environ Health 2013; 39:221-32. [PMID: 23588858 DOI: 10.5271/sjweh.3363] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
OBJECTIVE Research and interventions targeting the relationship between work, its attendant occupational hazards, and obesity are evolving but merit further consideration in the public health arena. In this discussion paper, conceptual heuristic models are described examining the role of obesity as both a risk factor and health outcome in the occupational setting. METHODS PubMed was searched using specific criteria from 2000 and onwards for evidence to support conceptual models in which obesity serves as a risk factor for occupational disease or an outcome of occupational exposures. Nine models are presented: four where obesity is a risk factor and five where it is an adverse effect. RESULTS A broad range of work-related health effects are associated with obesity including musculoskeletal disorders, asthma, liver disease, and cardiovascular disease, among others. Obesity can be associated with occupational hazards such as shift work, sedentary work, job stress, and exposure to some chemicals. CONCLUSION Identification of combinations of risk factors pertinent to obesity in the occupational environment will provide important guidance for research and prevention.
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Affiliation(s)
- Sudha P Pandalai
- National Institute for Occupational Safety and Health Centers for Disease Control and Prevention, 4676 Columbia Parkway, MS C-15, Cincinnati, OH 45226, USA.
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Griffett K, Burris TP. The mammalian clock and chronopharmacology. Bioorg Med Chem Lett 2013; 23:1929-34. [PMID: 23481644 PMCID: PMC4864859 DOI: 10.1016/j.bmcl.2013.02.015] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2012] [Revised: 01/25/2013] [Accepted: 02/04/2013] [Indexed: 12/19/2022]
Abstract
Increases in our understanding of the molecular control of circadian rhythms and subsequent signaling pathways has allowed for new therapeutic drug targets to be identified as well as for a better understanding of how to more efficaciously and safely utilize current drugs. Here, we review recent advances in targeting components of the molecular clock in mammals for the development of novel therapeutics as well as describe the impact of the circadian rhythm on drug efficacy and toxicity.
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Affiliation(s)
- Kristine Griffett
- 130 Scripps Way 2A1, The Scripps Research Institute, Scripps Florida, Jupiter, FL 33458, United States
| | - Thomas P. Burris
- 130 Scripps Way 2A1, The Scripps Research Institute, Scripps Florida, Jupiter, FL 33458, United States
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Youngson NA, Morris MJ. What obesity research tells us about epigenetic mechanisms. Philos Trans R Soc Lond B Biol Sci 2013; 368:20110337. [PMID: 23166398 PMCID: PMC3539363 DOI: 10.1098/rstb.2011.0337] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The pathophysiology of obesity is extremely complex and is associated with extensive gene expression changes in tissues throughout the body. This situation, combined with the fact that all gene expression changes are thought to have associated epigenetic changes, means that the links between obesity and epigenetics will undoubtedly be vast. Much progress in identifying epigenetic changes induced by (or inducing) obesity has already been made, with candidate and genome-wide approaches. These discoveries will aid the clinician through increasing our understanding of the inheritance, development and treatment of obesity. However, they are also of great value for epigenetic researchers, as they have revealed mechanisms of environmental interactions with epigenetics that can produce or perpetuate a disease state. Here, we will review the evidence for four mechanisms through which epigenetics contributes to obesity: as downstream effectors of environmental signals; through abnormal global epigenetic state driving obesogenic expression patterns; through facilitating developmental programming and through transgenerational epigenetic inheritance.
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Affiliation(s)
| | - Margaret J. Morris
- Department of Pharmacology, School of Medical Sciences, University of New South Wales, High Street, Kensington, New South Wales 2052, Australia
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