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Ma H, Deng J, Liu J, Jin X, Yang J. Daytime aspartame intake results in larger influences on body weight, serum corticosterone level, serum/cerebral cytokines levels and depressive-like behaviors in mice than nighttime intake. Neurotoxicology 2024; 102:37-47. [PMID: 38499183 DOI: 10.1016/j.neuro.2024.03.004] [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: 07/23/2023] [Revised: 11/25/2023] [Accepted: 03/15/2024] [Indexed: 03/20/2024]
Abstract
Aspartame (APM) is one of the most widely used artificial sweeteners worldwide. Studies have revealed that consuming APM may negatively affect the body, causing oxidative stress damage to multiple organs and leading to various neurophysiological symptoms. However, it's still unclear if consuming APM and one's daily biological rhythm have an interactive effect on health. In this study, healthy adult C57BL/6 mice were randomly divided into four groups: Control group (CON), oral gavage sham group (OGS), daytime APM intragastric group (DAI) and nighttime APM intragastric group (NAI). DAI and NAI groups were given 80 mg/kg body weight daily for 4 weeks. We found that DAI and NAI groups had significantly increased mean body weight, higher serum corticosterone levels, up-regulated pro-inflammatory responses in serum and brain, and exacerbated depressive-like behaviors than the CON and the two APM intake groups. Moreover, all these changes induced by APM intake were more significant in the DAI group than in the NAI group. The present study, for the first time, revealed that the intake of APM and daily biological rhythm have an interactive effect on health. This suggests that more attention should be paid to the timing of APM intake in human beings, and this study also provides an intriguing clue to the circadian rhythms of experimental animals that researchers should consider more when conducting animal experiments.
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Affiliation(s)
- Haiyuan Ma
- School of Clinical Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Jiapeng Deng
- School of Clinical Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Jing Liu
- Department of Anatomy, School of Basic Medical Sciences, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Xiaobao Jin
- Guangdong Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Junhua Yang
- Department of Anatomy, School of Basic Medical Sciences, Guangdong Pharmaceutical University, Guangzhou 510006, China; Guangdong Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou 510006, China.
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Vales-Villamarín C, de Dios O, Mahíllo-Fernández I, Perales M, Pérez-Nadador I, Gavela-Pérez T, Soriano-Guillén L, Garcés C. Sex-dependent relationship of polymorphisms in CLOCK and REV-ERBα genes with body mass index and lipid levels in children. Sci Rep 2023; 13:22127. [PMID: 38092833 PMCID: PMC10719338 DOI: 10.1038/s41598-023-49506-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 12/08/2023] [Indexed: 12/17/2023] Open
Abstract
Circadian rhythms, which are governed by a circadian clock, regulate important biological processes associated with obesity. SNPs in circadian clock genes have been linked to energy and lipid homeostasis. The aim of our study was to evaluate the associations of CLOCK and REV-ERBα SNPs with BMI and plasma lipid levels in pre-pubertal boys and girls. The study sample population comprised 1268 children aged 6-8 years. Information regarding anthropometric parameters and plasma lipid concentrations was available. Genotyping of CLOCK SNPs rs1801260, rs4580704, rs3749474, rs3736544 and rs4864548 and REV-ERBα SNPs rs2017427, rs20711570 and rs2314339 was performed by RT-PCR. The CLOCK SNPs rs3749474 and rs4864548 were significantly associated with BMI in girls but no in boys. Female carriers of the minor alleles for these SNPs presented lower BMI compared to non-carriers. A significant association of the REV-ERBα SNP rs2071570 with plasma total cholesterol, LDL-cholesterol and Apo B in males was also observed. Male AA carriers showed lower plasma levels of total cholesterol, LDL-cholesterol and Apo B levels as compared with carriers of the C allele. No significant associations between any of the studied REV-ERBα SNPs and plasma lipid levels were observed in females. In summary, CLOCK and REV-ERBα SNPs were associated with BMI and plasma lipid levels respectively in a sex-dependent manner. Our findings suggest that sex-related factors may interact with Clock genes SNPs conditioning the effects of these polymorphisms on circadian alterations.
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Affiliation(s)
| | - Olaya de Dios
- Lipid Research Laboratory, IIS-Fundación Jiménez Díaz, 28040, Madrid, Spain
| | | | - Macarena Perales
- Lipid Research Laboratory, IIS-Fundación Jiménez Díaz, 28040, Madrid, Spain
| | - Iris Pérez-Nadador
- Lipid Research Laboratory, IIS-Fundación Jiménez Díaz, 28040, Madrid, Spain
| | | | | | - Carmen Garcés
- Lipid Research Laboratory, IIS-Fundación Jiménez Díaz, 28040, Madrid, Spain.
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Lee CH, Murrell CE, Chu A, Pan X. Circadian Regulation of Apolipoproteins in the Brain: Implications in Lipid Metabolism and Disease. Int J Mol Sci 2023; 24:17415. [PMID: 38139244 PMCID: PMC10743770 DOI: 10.3390/ijms242417415] [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] [Received: 11/02/2023] [Revised: 12/08/2023] [Accepted: 12/10/2023] [Indexed: 12/24/2023] Open
Abstract
The circadian rhythm is a 24 h internal clock within the body that regulates various factors, including sleep, body temperature, and hormone secretion. Circadian rhythm disruption is an important risk factor for many diseases including neurodegenerative illnesses. The central and peripheral oscillators' circadian clock network controls the circadian rhythm in mammals. The clock genes govern the central clock in the suprachiasmatic nucleus (SCN) of the brain. One function of the circadian clock is regulating lipid metabolism. However, investigations of the circadian regulation of lipid metabolism-associated apolipoprotein genes in the brain are lacking. This review summarizes the rhythmic expression of clock genes and lipid metabolism-associated apolipoprotein genes within the SCN in Mus musculus. Nine of the twenty apolipoprotein genes identified from searching the published database (SCNseq and CircaDB) are highly expressed in the SCN. Most apolipoprotein genes (ApoE, ApoC1, apoA1, ApoH, ApoM, and Cln) show rhythmic expression in the brain in mice and thus might be regulated by the master clock. Therefore, this review summarizes studies on lipid-associated apolipoprotein genes in the SCN and other brain locations, to understand how apolipoproteins associated with perturbed cerebral lipid metabolism cause multiple brain diseases and disorders. This review describes recent advancements in research, explores current questions, and identifies directions for future research.
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Affiliation(s)
- Chaeeun Hannah Lee
- Department of Foundations of Medicine, New York University Grossman Long Island School of Medicine, Mineola, NY 11501, USA
| | - Charlotte Ellzabeth Murrell
- Department of Foundations of Medicine, New York University Grossman Long Island School of Medicine, Mineola, NY 11501, USA
| | - Alexander Chu
- Department of Foundations of Medicine, New York University Grossman Long Island School of Medicine, Mineola, NY 11501, USA
| | - Xiaoyue Pan
- Department of Foundations of Medicine, New York University Grossman Long Island School of Medicine, Mineola, NY 11501, USA
- Diabetes and Obesity Research Center, NYU Langone Hospital-Long Island, Mineola, NY 11501, USA
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Zhao X, Cai Q, Dong L, Zhang X, Wang C, Wang S, Liu L, Hu A. Association between length of daily siesta and brachial-ankle pulse wave velocity (baPWV): a community-based cross sectional study in North China. Sleep Breath 2023; 27:1819-1828. [PMID: 36826736 DOI: 10.1007/s11325-023-02791-7] [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] [Received: 07/14/2022] [Revised: 01/25/2023] [Accepted: 02/06/2023] [Indexed: 02/25/2023]
Abstract
INTRODUCTION To date, many studies have shown a link between siesta and cardiovascular events. Little is known regarding the connection between siesta and brachial-ankle pulse wave velocity (baPWV) levels, even though baPWV can determine the degree of atherosclerosis and vascular stiffness. Thus, we examined the relationship between siesta time and baPWV in a cross-sectional study. METHODS Interviews, physical examinations, lab testing, and electron beam computed tomography were all part of the baseline evaluation for participants aged older than 35. Baseline data were compared for 3 different siesta habits: irregular or no siestas, daily short siestas (1 h or less), and daily long siestas (> 1 h). Utilizing logistic regression models and multivariate linear regression, the link between siesta time and baPWV was determined. RESULTS Among all 6566 participants, the different siesta groups had a significant difference of the degrees of AS (P < 0.001). The same outcome was true for both males (P < 0.001) and females (P < 0.001). Numerous cardiovascular risk variables and markers of subclinical atherosclerosis were positively correlated with daily extended siestas. Results from the fully adjusted model showed that long siestas (> 60 min, OR = 1.18, 95%CI: 1.06-1.31, P = 0.002) were linked to a more severe level of the baPWV. For age or gender stratification, we found significant differences between non-siesta and > 60 min siesta groups. Multiple linear regression analysis revealed a positive connection between siesta duration and baPWV (β = 0.197, P = 0.038). CONCLUSIONS An elevated risk of atherosclerosis was shown to accompany prolonged siestas. These results need to be followed up on with prospective studies and additional lab work.
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Affiliation(s)
- Xiaolei Zhao
- Center for Non-Communicable Disease Management, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Qiujing Cai
- Center for Non-Communicable Disease Management, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Liguang Dong
- Peking University Shougang Hospital, Beijing, 100144, China
| | - Xinmin Zhang
- Center for Non-Communicable Disease Management, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Chenglong Wang
- Center for Non-Communicable Disease Management, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
| | - Shuyu Wang
- Beijing Hypertension League Institute, Beijing, 100039, China
| | - Lisheng Liu
- Beijing Hypertension League Institute, Beijing, 100039, China
| | - Aihua Hu
- Center for Non-Communicable Disease Management, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, 100045, China
- Beijing Hypertension League Institute, Beijing, 100039, China
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Zhu R, Yang J, Zhai Z, Zhao H, Jiang F, Sun C, Liu X, Hou J, Dou P, Wang C. The associations between sleep timing and night sleep duration with dyslipidemia in a rural population: The Henan Rural Cohort Study. Chronobiol Int 2023; 40:1261-1269. [PMID: 37781878 DOI: 10.1080/07420528.2023.2262565] [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: 12/28/2022] [Accepted: 09/18/2023] [Indexed: 10/03/2023]
Abstract
Evidence linking sleep timing and night sleep duration to dyslipidemia was limited and inconclusive, especially among low- and middle-income adults. The aims were to evaluate the associations between sleep timing, night sleep duration and dyslipidemia in a rural population. Based on the Henan Rural Cohort Study, a total of 37 164 participants were included. The Pittsburgh Sleep Quality Index was used to collect sleep information. Logistic regression and restrictive cubic splines were conducted to explore the associations. Of the 37 164 enrolled participants, 13881 suffered from dyslipidemia. Compared to the reference groups, people who went to sleep after 23:00 or woke up after 7:30 had higher prevalence of dyslipidemia, the adjusted odds ratios (ORs) and 95% confidence intervals (CIs)were 1.30 (1.20-1.41) and 1.34 (1.19-1.50). The adjusted OR (95%CI) of participants in the Late-sleep/Late-rise category compared to the Early-sleep/Early-rise category was 1.55 (1.08-1.23). Compared to the reference (7~≤8 h), the adjusted OR (95%CI) was 1.11 (1.03-1.20) for longer (>9 h) night sleep duration. Moreover, the combined effects of sleep duration (>9 h) with sleep time (22:00~) (OR = 1.46, 95%CI: 1.16-1.84), sleep duration (>9 h) with wake-up time (≥7:30) (OR = 1.28, 95%CI: 1.08-1.51), and sleep duration (>9 h) with the Late-sleep/Late-rise category (OR = 1.41, 95%CI: 1.14-1.75) increased the prevalence of dyslipidemia. Accordingly, our results indicate that delayed sleep timing and longer night sleep duration had independent and joint effects on higher risks of dyslipidemia in rural population.
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Affiliation(s)
- Ruifang Zhu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Jing Yang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Zhihan Zhai
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Hongfei Zhao
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Feng Jiang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Chunyang Sun
- Department of Preventive Medicine, School of Medicine, Henan University of Chinese Medicine, Zhengzhou, Henan, PR China
| | - Xiaotian Liu
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Jian Hou
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
| | - Ping Dou
- Department of Zhengzhou Center for Disease Control and Prevention, Zhengzhou, Henan, PR China
| | - Chongjian Wang
- Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, Henan, PR China
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Pawar A, Zabetakis I, Gavankar T, Lordan R. Milk polar lipids: Untapped potential for pharmaceuticals and nutraceuticals. PHARMANUTRITION 2023. [DOI: 10.1016/j.phanu.2023.100335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
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Wang W, Hao Z, Wu Z, Cui J, Liu H. Long-term artificial/natural daytime light affects mood, melatonin, corticosterone, and gut microbiota in rats. Appl Microbiol Biotechnol 2023; 107:2689-2705. [PMID: 36912904 DOI: 10.1007/s00253-023-12446-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 02/02/2023] [Accepted: 02/13/2023] [Indexed: 03/14/2023]
Abstract
The desynchronization of circadian rhythms affected by light may induce physiological and psychological disequilibrium. We aimed to elucidate changes of growth, depression-anxiety like behaviors, melatonin and corticosterone (CORT) secretion, and gut microbiota in rats influenced by long-term light inputs. Thirty male Sprague-Dawley rats were exposed to a 16/8 h light/dark regime for 8 weeks. The light period was set to 13 h of daylight with artificial light (AL group, n = 10), or with natural light (NL group, n = 10), or with mixed artificial-natural light (ANL group, n = 10), and 3 h of artificial night light after sunset. The obtained findings indicated that the highest weight gain and food efficiency were observed in the AL group and the lowest in NL group. In the behavioral tests, the NL and ANL groups showed lower anxiety level than AL group, and ANL groups showed lower depression level than AL group. The NL and ANL groups had delayed acrophases and maintained higher concentrations of melatonin compared to AL group. The circadian rhythm of CORT was only found in ANL group. At the phylum level, the mixed light contributed to a lower abundance of Bacteroidetes. The genus level results recommend a synergistic effect of artificial light and natural light on Lactobacillus abundance and an antagonistic effect on the Lachnospiraceae_NK4A136_group abundance. The study indicated that the mixture of artificial and natural light as well as the alignment of the proportions had beneficial influences on depression-anxiety-like levels, melatonin and corticosterone secretion, and the composition of the gut microbiota. KEY POINTS: • The mixed light can reduce the depression-anxiety level • The mixed light can maintain the secretion rhythm of melatonin and CORT • The mixed light can increase Lactobacillus and decrease Lachnospiraceae_NK4A136_group.
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Affiliation(s)
- Wei Wang
- Institute of Environmental Biology and Life Support Technology, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
- Institute of Medical Psychology, Faculty of Medicine, Ludwig-Maximilian-University of Munich, 80336, Munich, Germany
| | - Zikai Hao
- Key Laboratory of Molecular Medicine and Biotherapy, Ministry of Industry and Information Technology, School of Life Science, Beijing Institute of Technology, Beijing, 100081, China.
| | - Zizhou Wu
- Institute of Environmental Biology and Life Support Technology, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Jingwei Cui
- Institute of Environmental Biology and Life Support Technology, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China
| | - Hong Liu
- Institute of Environmental Biology and Life Support Technology, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100083, China.
- International Joint Research Center of Aerospace Biotechnology & Medical Engineering, Beihang University, Beijing, 100083, China.
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Tao G, Wang H, Shen Y, Zhai L, Liu B, Wang B, Chen W, Xing S, Chen Y, Gu HM, Qin S, Zhang DW. Surf4 (Surfeit Locus Protein 4) Deficiency Reduces Intestinal Lipid Absorption and Secretion and Decreases Metabolism in Mice. Arterioscler Thromb Vasc Biol 2023; 43:562-580. [PMID: 36756879 PMCID: PMC10026970 DOI: 10.1161/atvbaha.123.318980] [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: 02/10/2023]
Abstract
BACKGROUND Postprandial dyslipidemia is a causative risk factor for cardiovascular disease. The majority of absorbed dietary lipids are packaged into chylomicron and then delivered to circulation. Previous studies showed that Surf4 (surfeit locus protein 4) mediates very low-density lipoprotein secretion from hepatocytes. Silencing hepatic Surf4 markedly reduces the development of atherosclerosis in different mouse models of atherosclerosis without causing hepatic steatosis. However, the role of Surf4 in chylomicron secretion is unknown. METHODS We developed inducible intestinal-specific Surf4 knockdown mice (Surf4IKO) using Vil1Cre-ERT2 and Surf4flox mice. Metabolic cages were used to monitor mouse metabolism. Enzymatic kits were employed to measure serum and tissue lipid levels. The expression of target genes was detected by qRT-PCR and Western Blot. Transmission electron microscopy and radiolabeled oleic acid were used to assess the structure of enterocytes and intestinal lipid absorption and secretion, respectively. Proteomics was performed to determine changes in protein expression in serum and jejunum. RESULTS Surf4IKO mice, especially male Surf4IKO mice, displayed significant body weight loss, increased mortality, and reduced metabolism. Surf4IKO mice exhibited lipid accumulation in enterocytes and impaired fat absorption and secretion. Lipid droplets and small lipid vacuoles were accumulated in the cytosol and the endoplasmic reticulum lumen of the enterocytes of Surf4IKO mice, respectively. Surf4 colocalized with apoB and co-immunoprecipitated with apoB48 in differentiated Caco-2 cells. Intestinal Surf4 deficiency also significantly reduced serum triglyceride, cholesterol, and free fatty acid levels in mice. Proteomics data revealed that diverse pathways were altered in Surf4IKO mice. In addition, Surf4IKO mice had mild liver damage, decreased liver size and weight, and reduced hepatic triglyceride levels. CONCLUSIONS Our findings demonstrate that intestinal Surf4 plays an essential role in lipid absorption and chylomicron secretion and suggest that the therapeutic use of Surf4 inhibition requires highly cell/tissue-specific targeting.
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Affiliation(s)
- Geru Tao
- School of Basic Medical Sciences, The Second Affiliated Hospital of Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China (G.T., H.W., L.Z., B.L., B.W., W.C., S.X., Y.C., S.Q.)
- Institute of Atherosclerosis in Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, China (G.T., H.W., L.Z., B.L., B.W., W.C., S.X., Y.C., S.Q.)
| | - Hao Wang
- School of Basic Medical Sciences, The Second Affiliated Hospital of Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China (G.T., H.W., L.Z., B.L., B.W., W.C., S.X., Y.C., S.Q.)
- Institute of Atherosclerosis in Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, China (G.T., H.W., L.Z., B.L., B.W., W.C., S.X., Y.C., S.Q.)
| | | | - Lei Zhai
- School of Basic Medical Sciences, The Second Affiliated Hospital of Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China (G.T., H.W., L.Z., B.L., B.W., W.C., S.X., Y.C., S.Q.)
- Institute of Atherosclerosis in Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, China (G.T., H.W., L.Z., B.L., B.W., W.C., S.X., Y.C., S.Q.)
| | - Boyan Liu
- School of Basic Medical Sciences, The Second Affiliated Hospital of Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China (G.T., H.W., L.Z., B.L., B.W., W.C., S.X., Y.C., S.Q.)
- Institute of Atherosclerosis in Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, China (G.T., H.W., L.Z., B.L., B.W., W.C., S.X., Y.C., S.Q.)
| | - Bingxiang Wang
- School of Basic Medical Sciences, The Second Affiliated Hospital of Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China (G.T., H.W., L.Z., B.L., B.W., W.C., S.X., Y.C., S.Q.)
- Institute of Atherosclerosis in Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, China (G.T., H.W., L.Z., B.L., B.W., W.C., S.X., Y.C., S.Q.)
| | - Wei Chen
- School of Basic Medical Sciences, The Second Affiliated Hospital of Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China (G.T., H.W., L.Z., B.L., B.W., W.C., S.X., Y.C., S.Q.)
- Institute of Atherosclerosis in Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, China (G.T., H.W., L.Z., B.L., B.W., W.C., S.X., Y.C., S.Q.)
| | - Sijie Xing
- School of Basic Medical Sciences, The Second Affiliated Hospital of Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China (G.T., H.W., L.Z., B.L., B.W., W.C., S.X., Y.C., S.Q.)
- Institute of Atherosclerosis in Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, China (G.T., H.W., L.Z., B.L., B.W., W.C., S.X., Y.C., S.Q.)
| | - Yuan Chen
- School of Basic Medical Sciences, The Second Affiliated Hospital of Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China (G.T., H.W., L.Z., B.L., B.W., W.C., S.X., Y.C., S.Q.)
- Institute of Atherosclerosis in Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, China (G.T., H.W., L.Z., B.L., B.W., W.C., S.X., Y.C., S.Q.)
| | - Hong-Mei Gu
- Department of Pediatrics and Group on the Molecular and Cell Biology of Lipids, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada (H.-M.G., D.-W.Z.)
| | - Shucun Qin
- School of Basic Medical Sciences, The Second Affiliated Hospital of Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, China (G.T., H.W., L.Z., B.L., B.W., W.C., S.X., Y.C., S.Q.)
- Institute of Atherosclerosis in Shandong First Medical University & Shandong Academy of Medical Sciences, Taian, China (G.T., H.W., L.Z., B.L., B.W., W.C., S.X., Y.C., S.Q.)
| | - Da-Wei Zhang
- Department of Pediatrics and Group on the Molecular and Cell Biology of Lipids, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Canada (H.-M.G., D.-W.Z.)
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Sankaranarayanan C, Subramanian P. Molecular mechanisms interlinking biological clock and diabetes mellitus: Effective tools for better management. Diabetes Metab Syndr 2022; 16:102639. [PMID: 36279704 DOI: 10.1016/j.dsx.2022.102639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 09/28/2022] [Accepted: 10/01/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND AND AIM Advances in circadian biology have delineated the link between perturbed biological clock and metabolic diseases. Circadian disturbances are associated with the onset, progression and severity of diabetes mellitus. METHODS We conducted a literature survey using the key terms - circadian, diabetes, circadian and diabetes, clock genes and diabetes, chronotherapy and peripheral clocks in science direct, PubMed, Google, and Embase till August 23, 2021. RESULTS Misalignment between peripheral clocks located in pancreas, intestine, liver, adipose tissue and skeletal muscle and with the central oscillator alters the secretion of insulin, incretins, adipokines and soluble factors resulting in the derangement of metabolism leading to chronic hyperglycemia. CONCLUSION Management of circadian health restores glucose homeostasis confirming that chronotherapy will help in the management of diabetes mellitus. Further, administration of circadian clock modifiers has proved potential therapeutic agents to treat diabetes mellitus. The aim of the review is to highlight the molecular mechanisms linking biological clock and diabetes mellitus and how they are useful for effective management of the disease.
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Affiliation(s)
- Chandrasekaran Sankaranarayanan
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar, 608 002, Tamil Nadu, India
| | - Perumal Subramanian
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar, 608 002, Tamil Nadu, India.
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Pan X, Hussain MM. Bmal1 regulates production of larger lipoproteins by modulating cAMP-responsive element-binding protein H and apolipoprotein AIV. Hepatology 2022; 76:78-93. [PMID: 34626126 PMCID: PMC8993942 DOI: 10.1002/hep.32196] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/22/2021] [Accepted: 10/04/2021] [Indexed: 01/05/2023]
Abstract
BACKGROUND AND AIMS High plasma lipid/lipoprotein levels are risk factors for various metabolic diseases. We previously showed that circadian rhythms regulate plasma lipids and deregulation of these rhythms causes hyperlipidemia and atherosclerosis in mice. Here, we show that global and liver-specific brain and muscle aryl hydrocarbon receptor nuclear translocator-like 1 (Bmal1)-deficient mice maintained on a chow or Western diet developed hyperlipidemia, denoted by the presence of higher amounts of triglyceride-rich and apolipoprotein AIV (ApoAIV)-rich larger chylomicron and VLDL due to overproduction. APPROACH AND RESULTS Bmal1 deficiency decreased small heterodimer partner (Shp) and increased microsomal triglyceride transfer protein (MTP), a key protein that facilitates primordial lipoprotein assembly and secretion. Moreover, we show that Bmal1 regulates cAMP-responsive element-binding protein H (Crebh) to modulate ApoAIV expression and the assembly of larger lipoproteins. This is supported by the observation that Crebh-deficient and ApoAIV-deficient mice, along with Bmal1-deficient mice with knockdown of Crebh, had smaller lipoproteins. Further, overexpression of Bmal1 in Crebh-deficient mice had no effect on ApoAIV expression and lipoprotein size. CONCLUSIONS These studies indicate that regulation of ApoAIV and assembly of larger lipoproteins by Bmal1 requires Crebh. Mechanistic studies showed that Bmal1 regulates Crebh expression by two mechanisms. First, Bmal1 interacts with the Crebh promoter to control circadian regulation. Second, Bmal1 increases Rev-erbα expression, and nuclear receptor subfamily 1 group D member 1 (Nr1D1, Rev-erbα) interacts with the Crebh promoter to repress expression. In short, Bmal1 modulates both the synthesis of primordial lipoproteins and their subsequent expansion into larger lipoproteins by regulating two different proteins, MTP and ApoAIV, through two different transcription factors, Shp and Crebh. It is likely that disruptions in circadian mechanisms contribute to hyperlipidemia and that avoiding disruptions in circadian rhythms may limit/prevent hyperlipidemia and atherosclerosis.
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Affiliation(s)
- Xiaoyue Pan
- Department of Foundations of Medicine, New York University Long Island School of Medicine, Mineola, NY, USA
- Department of Cell Biology, SUNY Downstate Medical Center, Brooklyn, NY, USA
| | - M Mahmood Hussain
- Department of Foundations of Medicine, New York University Long Island School of Medicine, Mineola, NY, USA
- Department of Cell Biology, SUNY Downstate Medical Center, Brooklyn, NY, USA
- VA New York Harbor Healthcare System, Brooklyn, NY, USA
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11
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Circadian rhythm of lipid metabolism. Biochem Soc Trans 2022; 50:1191-1204. [PMID: 35604112 DOI: 10.1042/bst20210508] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 04/29/2022] [Accepted: 05/04/2022] [Indexed: 02/07/2023]
Abstract
Lipids comprise a diverse group of metabolites that are indispensable as energy storage molecules, cellular membrane components and mediators of inter- and intra-cellular signaling processes. Lipid homeostasis plays a crucial role in maintaining metabolic health in mammals including human beings. A growing body of evidence suggests that the circadian clock system ensures temporal orchestration of lipid homeostasis, and that perturbation of such diurnal regulation leads to the development of metabolic disorders comprising obesity and type 2 diabetes. In view of the emerging role of circadian regulation in maintaining lipid homeostasis, in this review, we summarize the current knowledge on lipid metabolic pathways controlled by the mammalian circadian system. Furthermore, we review the emerging connection between the development of human metabolic diseases and changes in lipid metabolites that belong to major classes of lipids. Finally, we highlight the mechanisms underlying circadian organization of lipid metabolic rhythms upon the physiological situation, and the consequences of circadian clock dysfunction for dysregulation of lipid metabolism.
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12
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Chewing the Fat with Microbes: Lipid Crosstalk in the Gut. Nutrients 2022; 14:nu14030573. [PMID: 35276931 PMCID: PMC8840455 DOI: 10.3390/nu14030573] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 01/22/2022] [Accepted: 01/25/2022] [Indexed: 01/27/2023] Open
Abstract
It is becoming increasingly important for any project aimed at understanding the effects of diet on human health, to also consider the combined effect of the trillions of microbes within the gut which modify and are modified by dietary nutrients. A healthy microbiome is diverse and contributes to host health, partly via the production and subsequent host absorption of secondary metabolites. Many of the beneficial bacteria in the gut rely on specific nutrients, such as dietary fiber, to survive and thrive. In the absence of those nutrients, the relative proportion of good commensal bacteria dwindles while communities of opportunistic, and potentially pathogenic, bacteria expand. Therefore, it is unsurprising that both diet and the gut microbiome have been associated with numerous human diseases. Inflammatory bowel diseases and colorectal cancer are associated with the presence of certain pathogenic bacteria and risk increases with consumption of a Western diet, which is typically high in fat, protein, and refined carbohydrates, but low in plant-based fibers. Indeed, despite increased screening and better care, colorectal cancer is still the 2nd leading cause of cancer death in the US and is the 3rd most diagnosed cancer among US men and women. Rates are rising worldwide as diets are becoming more westernized, alongside rising rates of metabolic diseases like obesity and diabetes. Understanding how a modern diet influences the microbiota and how subsequent microbial alterations effect human health will become essential in guiding personalized nutrition and healthcare in the future. Herein, we will summarize some of the latest advances in understanding of the three-way interaction between the human host, the gut microbiome, and the specific class of dietary nutrients, lipids.
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13
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Albreiki MS, Middleton B, Hampton SM. The effect of melatonin on glucose tolerance, insulin sensitivity and lipid profiles after a late evening meal in healthy young males. J Pineal Res 2021; 71:e12770. [PMID: 34582575 PMCID: PMC9285903 DOI: 10.1111/jpi.12770] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 09/21/2021] [Accepted: 09/25/2021] [Indexed: 12/25/2022]
Abstract
The suppression of melatonin by light at night (LAN) has been associated with a disruption of SCN function and biological processes. This study aimed to explore the impact of melatonin on glucose and lipid metabolism before and after a late evening meal. Nine healthy male participants (26 ± 1.3 years, BMI 24.8 ± 0.8 kg/m2 (mean ± SD) were randomly categorised into a three-way cross-over design protocol: light (>500 lux) (LS), dark (<5 lux) + exogenous melatonin (DSC) and light (>500 lux) + exogenous melatonin (LSC). All participants were awake in a semi-recumbent position during each clinical session, which started at 18 00 h and ended at 06:00 h the following day. The meal times were individualised according to melatonin onset estimated from the participants' 48-h sequential urine collection. The administration of exogenous melatonin was conducted 90 min before the evening meal. Saliva and plasma samples were collected at specific time points to analyse the glucose, insulin, NEFAs, TAGs, cortisol and melatonin levels. Participants demonstrated a significant reduction in postprandial plasma glucose, insulin and TAGs levels in the presence of melatonin (LSC and DSC) compared to LS (p = .002, p = .02 and p = .007, respectively). Pre-prandial plasma NEFAs were significantly lower in LS than DSC and LSC as melatonin rose (p < .001). Exogenous melatonin administrated before an evening test meal improved glucose tolerance, insulin sensitivity and reduced postprandial TAGs. This study could have implications for shift workers who may have lower melatonin levels at night due to light suppression.
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Affiliation(s)
- Mohammed S. Albreiki
- Department of Biochemistry and Physiology, Centre for Chronobiology, School of Biosciences and MedicineUniversity of SurreyGuildfordSurreyUK
- Center for BiotechnologyKhalifa UniversityAbu DhabiUnited Arab Emirates
| | - Benita Middleton
- Department of Biochemistry and Physiology, Centre for Chronobiology, School of Biosciences and MedicineUniversity of SurreyGuildfordSurreyUK
| | - Shelagh M. Hampton
- Department of Biochemistry and Physiology, Centre for Chronobiology, School of Biosciences and MedicineUniversity of SurreyGuildfordSurreyUK
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14
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Sgro M, Kodila ZN, Brady RD, Reichelt AC, Mychaisuk R, Yamakawa GR. Synchronizing Our Clocks as We Age: The Influence of the Brain-Gut-Immune Axis on the Sleep-Wake Cycle Across the Lifespan. Sleep 2021; 45:6425072. [PMID: 34757429 DOI: 10.1093/sleep/zsab268] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Revised: 10/11/2021] [Indexed: 11/12/2022] Open
Abstract
The microbes that colonize the small and large intestines, known as the gut microbiome, play an integral role in optimal brain development and function. The gut microbiome is a vital component of the bi-directional communication pathway between the brain, immune system, and gut, also known as the brain-gut-immune axis. To date there has been minimal investigation into the implications of improper development of the gut microbiome and the brain-gut-immune axis on the sleep-wake cycle, particularly during sensitive periods of physical and neurological development, such as childhood, adolescence, and senescence. Therefore, this review will explore the current literature surrounding the overlapping developmental periods of the gut microbiome, brain, and immune system from birth through to senescence, while highlighting how the brain-gut-immune axis affects maturation and organisation of the sleep-wake cycle. We also examine how dysfunction to either the microbiome or the sleep-wake cycle negatively affects the bidirectional relationship between the brain and gut, and subsequently the overall health and functionality of this complex system. Additionally, this review integrates therapeutic studies to demonstrate when dietary manipulations, such as supplementation with probiotics and prebiotics, can modulate the gut microbiome to enhance health of the brain-gut-immune axis and optimize our sleep-wake cycle.
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Affiliation(s)
- Marissa Sgro
- Department of Neuroscience, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Zoe N Kodila
- Department of Neuroscience, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Rhys D Brady
- Department of Neuroscience, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Amy C Reichelt
- Department of Medical Sciences, Adelaide Medical School, The University of Adelaide, Adelaide, Australia
| | - Richelle Mychaisuk
- Department of Neuroscience, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Glenn R Yamakawa
- Department of Neuroscience, Central Clinical School, Monash University, Melbourne, VIC, Australia
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15
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Lago-Sampedro A, Ho-Plagaro A, Garcia-Serrano S, Santiago-Fernandez C, Rodríguez-Díaz C, Lopez-Gómez C, Martín-Reyes F, Ruiz-Aldea G, Alcaín-Martínez G, Gonzalo M, Montiel-Casado C, Fernández JR, García-Fuentes E, Rodríguez-Pacheco F. Oleic acid restores the rhythmicity of the disrupted circadian rhythm found in gastrointestinal explants from patients with morbid obesity. Clin Nutr 2021; 40:4324-4333. [PMID: 33531179 DOI: 10.1016/j.clnu.2021.01.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 01/08/2021] [Accepted: 01/09/2021] [Indexed: 01/14/2023]
Abstract
BACKGROUND & AIMS We investigated whether oleic acid (OA), one of the main components of the Mediterranean diet, participates in the regulation of the intestinal circadian rhythm in patients with morbid obesity. METHODS Stomach and jejunum explants from patients with morbid obesity were incubated with oleic acid to analyze the regulation of clock genes. RESULTS Stomach explants showed an altered circadian rhythm in CLOCK, BMAL1, REVERBα, CRY1, and CRY2, and an absence in PER1, PER2, PER3 and ghrelin (p > 0.05). OA led to the emergence of rhythmicity in PER1, PER2, PER3 and ghrelin (p < 0.05). Jejunum explants showed an altered circadian rhythm in CLOCK, BMAL1, PER1 and PER3, and an absence in PER2, REVERBα, CRY1, CRY2 and GLP1 (p > 0.05). OA led to the emergence of rhythmicity in PER2, REVERBα, CRY1 and GLP1 (p < 0.05), but not in CRY2 (p > 0.05). OA restored the rhythmicity of acrophase and increased the amplitude for most of the genes studied in stomach and jejunum explants. OA placed PER1, PER2, PER3, REVERBα, CRY1 and CRY2 in antiphase with regard to CLOCK and BMAL1. CONCLUSIONS There is an alteration in circadian rhythm in stomach and jejunum explants in morbid obesity. OA restored the rhythmicity of the genes related with circadian rhythm, ghrelin and GLP1, although with slight differences between tissues, which could determine a different behaviour of the explants from jejunum and stomach in obesity.
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Affiliation(s)
- Ana Lago-Sampedro
- Unidad de Gestión Clínica de Endocrinología y Nutrición, Hospital Regional Universitario, Instituto de Investigación Biomédica de Málaga-IBIMA, Málaga, Spain
| | - Ailec Ho-Plagaro
- Unidad de Gestión Clínica de Aparato Digestivo, Hospital Universitario Virgen de la Victoria, Instituto de Investigación Biomédica de Málaga-IBIMA, Málaga, Spain
| | - Sara Garcia-Serrano
- Unidad de Gestión Clínica de Endocrinología y Nutrición, Hospital Regional Universitario, Instituto de Investigación Biomédica de Málaga-IBIMA, Málaga, Spain; CIBER de Diabetes y Enfermedades Metabólicas Asociadas-CIBERDEM, Málaga, Spain
| | - Concepción Santiago-Fernandez
- Unidad de Gestión Clínica de Aparato Digestivo, Hospital Universitario Virgen de la Victoria, Instituto de Investigación Biomédica de Málaga-IBIMA, Málaga, Spain
| | - Cristina Rodríguez-Díaz
- Unidad de Gestión Clínica de Aparato Digestivo, Hospital Universitario Virgen de la Victoria, Instituto de Investigación Biomédica de Málaga-IBIMA, Málaga, Spain
| | - Carlos Lopez-Gómez
- Unidad de Gestión Clínica de Aparato Digestivo, Hospital Universitario Virgen de la Victoria, Instituto de Investigación Biomédica de Málaga-IBIMA, Málaga, Spain
| | - Flores Martín-Reyes
- Unidad de Gestión Clínica de Aparato Digestivo, Hospital Universitario Virgen de la Victoria, Instituto de Investigación Biomédica de Málaga-IBIMA, Málaga, Spain
| | - Gonzalo Ruiz-Aldea
- Departamento Biología Celular, Genética y Fisiología, Universidad de Málaga, Málaga, Spain
| | - Guillermo Alcaín-Martínez
- Unidad de Gestión Clínica de Aparato Digestivo, Hospital Universitario Virgen de la Victoria, Instituto de Investigación Biomédica de Málaga-IBIMA, Málaga, Spain
| | - Montserrat Gonzalo
- Unidad de Gestión Clínica de Endocrinología y Nutrición, Hospital Regional Universitario, Instituto de Investigación Biomédica de Málaga-IBIMA, Málaga, Spain
| | - Custodia Montiel-Casado
- Unidad de Gestión Clínica de Cirugía General, Digestiva y Trasplantes, Hospital Regional Universitario, Málaga, Spain
| | - José R Fernández
- Bioengineering & Chronobiology Labs, atlanTTic Research Center, University of Vigo, Spain
| | - Eduardo García-Fuentes
- Unidad de Gestión Clínica de Aparato Digestivo, Hospital Universitario Virgen de la Victoria, Instituto de Investigación Biomédica de Málaga-IBIMA, Málaga, Spain.
| | - Francisca Rodríguez-Pacheco
- Unidad de Gestión Clínica de Aparato Digestivo, Hospital Universitario Virgen de la Victoria, Instituto de Investigación Biomédica de Málaga-IBIMA, Málaga, Spain; CIBER de Diabetes y Enfermedades Metabólicas Asociadas-CIBERDEM, Málaga, Spain
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16
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Martchenko A, Martchenko SE, Biancolin AD, Brubaker PL. Circadian Rhythms and the Gastrointestinal Tract: Relationship to Metabolism and Gut Hormones. Endocrinology 2020; 161:5909225. [PMID: 32954405 PMCID: PMC7660274 DOI: 10.1210/endocr/bqaa167] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 09/16/2020] [Indexed: 02/08/2023]
Abstract
Circadian rhythms are 24-hour biological rhythms within organisms that have developed over evolutionary time due to predefined environmental changes, mainly the light-dark cycle. Interestingly, metabolic tissues, which are largely responsible for establishing diurnal metabolic homeostasis, have been found to express cell-autonomous clocks that are entrained by food intake. Disruption of the circadian system, as seen in individuals who conduct shift work, confers significant risk for the development of metabolic diseases such as type 2 diabetes and obesity. The gastrointestinal (GI) tract is the first point of contact for ingested nutrients and is thus an essential organ system for metabolic control. This review will focus on the circadian function of the GI tract with a particular emphasis on its role in metabolism through regulation of gut hormone release. First, the circadian molecular clock as well as the organization of the mammalian circadian system is introduced. Next, a brief overview of the structure of the gut as well as the circadian regulation of key functions important in establishing metabolic homeostasis is discussed. Particularly, the focus of the review is centered around secretion of gut hormones; however, other functions of the gut such as barrier integrity and intestinal immunity, as well as digestion and absorption, all of which have relevance to metabolic control will be considered. Finally, we provide insight into the effects of circadian disruption on GI function and discuss chronotherapeutic intervention strategies for mitigating associated metabolic dysfunction.
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Affiliation(s)
| | | | | | - Patricia L Brubaker
- Department of Physiology, University of Toronto, Toronto, ON, Canada
- Department of Medicine, University of Toronto, Toronto, ON, Canada
- Correspondence: P.L. Brubaker, Rm 3366 Medical Sciences Building, University of Toronto, 1 King’s College Circle, Toronto, ON M5S 1A8 Canada. E-mail:
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17
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Meuronen T, Lankinen MA, Fauland A, Shimizu BI, de Mello VD, Laaksonen DE, Wheelock CE, Erkkilä AT, Schwab US. Intake of Camelina Sativa Oil and Fatty Fish Alter the Plasma Lipid Mediator Profile in Subjects with Impaired Glucose Metabolism - A Randomized Controlled Trial. Prostaglandins Leukot Essent Fatty Acids 2020; 159:102143. [PMID: 32512364 DOI: 10.1016/j.plefa.2020.102143] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 04/29/2020] [Accepted: 05/25/2020] [Indexed: 12/14/2022]
Abstract
n-3 and n-6 polyunsaturated fatty acids (PUFAs) and their lipid mediator metabolites are associated with inflammation. We investigated the effect of dietary intake of plant- and animal-derived n-3 PUFAs and fish protein on the circulatory concentrations of lipid mediators. Seventy-nine subjects with impaired fasting glucose who completed the controlled dietary intervention after randomization to the fatty fish (FF, n=20), lean fish (LF, n=21), Camelina sativa oil (CSO, n=18) or control group (n=20) for 12 weeks were studied. Lipid mediator profiling from fasting plasma samples before and after the intervention was performed by liquid chromatography-mass spectrometry (LC-MS/MS). The FF diet increased concentrations of 18-hydroxyeicosapentaenoic acid (18-HEPE) and 4- and 17-hydroxydocosahexaenoic acid (4-, 17-HDoHE) derived from eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), respectively. Concentrations of lipid mediators derived from α-linolenic acid (ALA) increased and arachidonic acid (AA) derived 5-iso prostaglandin F2α-VI decreased in the CSO group. There were no significant changes in lipid mediators in the LF group. The dietary intake of both plant and animal-based n-3 PUFAs increased circulatory concentrations of lipid mediators with potential anti-inflammatory properties.
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Affiliation(s)
- Topi Meuronen
- Institute of Public Health and Clinical Nutrition, School of Medicine, University of Eastern Finland, 70211 Kuopio, Finland.
| | - Maria A Lankinen
- Institute of Public Health and Clinical Nutrition, School of Medicine, University of Eastern Finland, 70211 Kuopio, Finland
| | - Alexander Fauland
- Division of Physiological Chemistry 2, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Bun-Ichi Shimizu
- Division of Physiological Chemistry 2, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Vanessa D de Mello
- Institute of Public Health and Clinical Nutrition, School of Medicine, University of Eastern Finland, 70211 Kuopio, Finland
| | - David E Laaksonen
- Department of Medicine, Endocrinology and Clinical Nutrition, Kuopio University Hospital, 70029 Kuopio University Hospital, Finland; Institute of Biomedicine, Physiology, University of Eastern Finland, 70211 Kuopio, Finland
| | - Craig E Wheelock
- Division of Physiological Chemistry 2, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Arja T Erkkilä
- Institute of Public Health and Clinical Nutrition, School of Medicine, University of Eastern Finland, 70211 Kuopio, Finland
| | - Ursula S Schwab
- Institute of Public Health and Clinical Nutrition, School of Medicine, University of Eastern Finland, 70211 Kuopio, Finland; Department of Medicine, Endocrinology and Clinical Nutrition, Kuopio University Hospital, 70029 Kuopio University Hospital, Finland
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18
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Gu C, Brereton N, Schweitzer A, Cotter M, Duan D, Børsheim E, Wolfe RR, Pham LV, Polotsky VY, Jun JC. Metabolic Effects of Late Dinner in Healthy Volunteers-A Randomized Crossover Clinical Trial. J Clin Endocrinol Metab 2020; 105:5855227. [PMID: 32525525 PMCID: PMC7337187 DOI: 10.1210/clinem/dgaa354] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 05/07/2020] [Accepted: 06/05/2020] [Indexed: 01/25/2023]
Abstract
CONTEXT Consuming calories later in the day is associated with obesity and metabolic syndrome. We hypothesized that eating a late dinner alters substrate metabolism during sleep in a manner that promotes obesity. OBJECTIVE The objective of this work is to examine the impact of late dinner on nocturnal metabolism in healthy volunteers. DESIGN AND SETTING This is a randomized crossover trial of late dinner (LD, 22:00) vs routine dinner (RD, 18:00), with a fixed sleep period (23:00-07:00) in a laboratory setting. PARTICIPANTS Participants comprised 20 healthy volunteers (10 male, 10 female), age 26.0 ± 0.6 years, body mass index 23.2 ± 0.7 kg/m2, accustomed to a bedtime between 22:00 and 01:00. INTERVENTIONS An isocaloric macronutrient diet was administered on both visits. Dinner (35% daily kcal, 50% carbohydrate, 35% fat) with an oral lipid tracer ([2H31] palmitate, 15 mg/kg) was given at 18:00 with RD and 22:00 with LD. MAIN OUTCOME MEASURES Measurements included nocturnal and next-morning hourly plasma glucose, insulin, triglycerides, free fatty acids (FFAs), cortisol, dietary fatty acid oxidation, and overnight polysomnography. RESULTS LD caused a 4-hour shift in the postprandial period, overlapping with the sleep phase. Independent of this shift, the postprandial period following LD was characterized by higher glucose, a triglyceride peak delay, and lower FFA and dietary fatty acid oxidation. LD did not affect sleep architecture, but increased plasma cortisol. These metabolic changes were most pronounced in habitual earlier sleepers determined by actigraphy monitoring. CONCLUSION LD induces nocturnal glucose intolerance, and reduces fatty acid oxidation and mobilization, particularly in earlier sleepers. These effects might promote obesity if they recur chronically.
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Affiliation(s)
- Chenjuan Gu
- Division of Pulmonary and Critical Care, Department of Medicine, Johns Hopkins University, Baltimore, Maryland
| | - Nga Brereton
- Institute for Clinical and Translational Research, Johns Hopkins University, Baltimore, Maryland
| | - Amy Schweitzer
- Institute for Clinical and Translational Research, Johns Hopkins University, Baltimore, Maryland
| | - Matthew Cotter
- Arkansas Children’s Nutrition Center, Arkansas Children’s Research Institute, Little Rock, Arkansas
| | - Daisy Duan
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Johns Hopkins University, Baltimore, Maryland
| | - Elisabet Børsheim
- Arkansas Children’s Nutrition Center, Arkansas Children’s Research Institute, Little Rock, Arkansas
- Department of Pediatrics, The University of Arkansas for Medical Sciences, Little Rock, Arkansas
- Department of Geriatrics, Center for Translational Research in Aging and Longevity, The University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Robert R Wolfe
- Department of Pediatrics, The University of Arkansas for Medical Sciences, Little Rock, Arkansas
- Department of Geriatrics, Center for Translational Research in Aging and Longevity, The University of Arkansas for Medical Sciences, Little Rock, Arkansas
| | - Luu V Pham
- Division of Pulmonary and Critical Care, Department of Medicine, Johns Hopkins University, Baltimore, Maryland
| | - Vsevolod Y Polotsky
- Division of Pulmonary and Critical Care, Department of Medicine, Johns Hopkins University, Baltimore, Maryland
| | - Jonathan C Jun
- Division of Pulmonary and Critical Care, Department of Medicine, Johns Hopkins University, Baltimore, Maryland
- Correspondence and Reprint Requests: Jonathan C. Jun, MD, Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, 5501 Hopkins Bayview Circle, Room 5A50.B, Baltimore, MD 21224. E-mail:
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19
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Straub RH. The memory of the fatty acid system. Prog Lipid Res 2020; 79:101049. [PMID: 32589906 DOI: 10.1016/j.plipres.2020.101049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 06/03/2020] [Accepted: 06/19/2020] [Indexed: 12/15/2022]
Abstract
Mental memory system has sensory memory, short-term memory, working memory, and long-term memory. Working memory "keeps things in mind in parallel" when performing complex tasks. Similar aspects can be found for immunological memory. However, there exists another one, the memory of the fatty acid system. This article shows sensory memory of the fatty acid system, which is the perception apparatus of small intestine enterocytes (CD36, SR-B1, FATP4, FABP1, FABP2) and hepatocytes. In these cells, the fatty acid short-term memory is located, consisting of a cytoplasmic lipid droplet cycle. Similar like a working memory in the brain, the short-term memory of enterocytes and hepatocytes use parallel processing and recourse to long-term fatty acid memory. The fatty acid long-term memory is far away from these primary points of uptake. It is located in the adipocyte and in cellular membranes. The process of building a fatty acid memory is described with constructs like sensing environmental material, encoding, consolidation, long-term storage, retrieval, re-encoding, re-consolidation, and renewed long-term storage. The article illustrates the dynamics of building a fatty acid memory, the information content of fatty acids including the code, the roles of fatty acids in the body, and a new understanding of the expression "you are what you eat". The memory of the fatty acid system, plays a decisive role in integrating environmental signals over time (diet and microbiome).
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Affiliation(s)
- Rainer H Straub
- Laboratory of Experimental Rheumatology and Neuroendocrine Immunology, Department of Internal Medicine, University Hospital, Regensburg, Germany.
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20
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Pan X, Taylor MJ, Cohen E, Hanna N, Mota S. Circadian Clock, Time-Restricted Feeding and Reproduction. Int J Mol Sci 2020; 21:ijms21030831. [PMID: 32012883 PMCID: PMC7038040 DOI: 10.3390/ijms21030831] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2019] [Revised: 01/23/2020] [Accepted: 01/24/2020] [Indexed: 12/29/2022] Open
Abstract
The goal of this review was to seek a better understanding of the function and differential expression of circadian clock genes during the reproductive process. Through a discussion of how the circadian clock is involved in these steps, the identification of new clinical targets for sleep disorder-related diseases, such as reproductive failure, will be elucidated. Here, we focus on recent research findings regarding circadian clock regulation within the reproductive system, shedding new light on circadian rhythm-related problems in women. Discussions on the roles that circadian clock plays in these reproductive processes will help identify new clinical targets for such sleep disorder-related diseases.
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Affiliation(s)
- Xiaoyue Pan
- Department of Foundations of Medicine, New York University Long Island School of Medicine, Mineola, New York, NY 11501, USA
- Diabetes and Obesity Research Center, NYU Winthrop Hospital, Mineola, New York, NY 11501, USA
- Correspondence:
| | - Meredith J. Taylor
- Department of Foundations of Medicine, New York University Long Island School of Medicine, Mineola, New York, NY 11501, USA
- Diabetes and Obesity Research Center, NYU Winthrop Hospital, Mineola, New York, NY 11501, USA
| | - Emma Cohen
- Diabetes and Obesity Research Center, NYU Winthrop Hospital, Mineola, New York, NY 11501, USA
| | - Nazeeh Hanna
- Department of Foundations of Medicine, New York University Long Island School of Medicine, Mineola, New York, NY 11501, USA
- Department of Pediatrics, NYU Winthrop Hospital, Mineola, New York, NY 11501, USA
| | - Samantha Mota
- Department of Foundations of Medicine, New York University Long Island School of Medicine, Mineola, New York, NY 11501, USA
- Diabetes and Obesity Research Center, NYU Winthrop Hospital, Mineola, New York, NY 11501, USA
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21
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Sinturel F, Petrenko V, Dibner C. Circadian Clocks Make Metabolism Run. J Mol Biol 2020; 432:3680-3699. [PMID: 31996313 DOI: 10.1016/j.jmb.2020.01.018] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 01/16/2020] [Accepted: 01/16/2020] [Indexed: 12/12/2022]
Abstract
Most organisms adapt to the 24-h cycle of the Earth's rotation by anticipating the time of the day through light-dark cycles. The internal time-keeping system of the circadian clocks has been developed to ensure this anticipation. The circadian system governs the rhythmicity of nearly all physiological and behavioral processes in mammals. In this review, we summarize current knowledge stemming from rodent and human studies on the tight interconnection between the circadian system and metabolism in the body. In particular, we highlight recent advances emphasizing the roles of the peripheral clocks located in the metabolic organs in regulating glucose, lipid, and protein homeostasis at the organismal and cellular levels. Experimental disruption of circadian system in rodents is associated with various metabolic disturbance phenotypes. Similarly, perturbation of the clockwork in humans is linked to the development of metabolic diseases. We discuss recent studies that reveal roles of the circadian system in the temporal coordination of metabolism under physiological conditions and in the development of human pathologies.
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Affiliation(s)
- Flore Sinturel
- Department of Medicine, Division of Endocrinology, Diabetes, Hypertension and Nutrition, Faculty of Medicine, University of Geneva, Rue Michel-Servet, 1, CH-1211, Geneva, 14, Switzerland; Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, Geneva, Switzerland; Diabetes Center, Faculty of Medicine, University of Geneva, Geneva, Switzerland; Institute of Genetics and Genomics of Geneva (iGE3), University of Geneva, Geneva, Switzerland.
| | - Volodymyr Petrenko
- Department of Medicine, Division of Endocrinology, Diabetes, Hypertension and Nutrition, Faculty of Medicine, University of Geneva, Rue Michel-Servet, 1, CH-1211, Geneva, 14, Switzerland; Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, Geneva, Switzerland; Diabetes Center, Faculty of Medicine, University of Geneva, Geneva, Switzerland; Institute of Genetics and Genomics of Geneva (iGE3), University of Geneva, Geneva, Switzerland
| | - Charna Dibner
- Department of Medicine, Division of Endocrinology, Diabetes, Hypertension and Nutrition, Faculty of Medicine, University of Geneva, Rue Michel-Servet, 1, CH-1211, Geneva, 14, Switzerland; Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, Geneva, Switzerland; Diabetes Center, Faculty of Medicine, University of Geneva, Geneva, Switzerland; Institute of Genetics and Genomics of Geneva (iGE3), University of Geneva, Geneva, Switzerland.
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22
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Pan X, Mota S, Zhang B. Circadian Clock Regulation on Lipid Metabolism and Metabolic Diseases. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1276:53-66. [PMID: 32705594 PMCID: PMC8593891 DOI: 10.1007/978-981-15-6082-8_5] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The basic helix-loop-helix-PAS transcription factor (CLOCK, Circadian locomotor output cycles protein kaput) was discovered in 1994 as a circadian clock. Soon after its discovery, the circadian clock, Aryl hydrocarbon receptor nuclear translocator-like protein 1 (ARNTL, also call BMAL1), was shown to regulate adiposity and body weight by controlling on the brain hypothalamic suprachiasmatic nucleus (SCN). Farther, circadian clock genes were determined to exert several of lipid metabolic and diabetes effects, overall indicating that CLOCK and BMAL1 act as a central master circadian clock. A master circadian clock acts through the neurons and hormones, with expression in the intestine, liver, kidney, lung, heart, SCN of brain, and other various cell types of the organization. Among circadian clock genes, numerous metabolic syndromes are the most important in the regulation of food intake (via regulation of circadian clock genes or clock-controlled genes in peripheral tissue), which lead to a variation in plasma phospholipids and tissue phospholipids. Circadian clock genes affect the regulation of transporters and proteins included in the regulation of phospholipid metabolism. These genes have recently received increasing recognition because a pharmacological target of circadian clock genes may be of therapeutic worth to make better resistance against insulin, diabetes, obesity, metabolism syndrome, atherosclerosis, and brain diseases. In this book chapter, we focus on the regulation of circadian clock and summarize its phospholipid effect as well as discuss the chemical, physiology, and molecular value of circadian clock pathway regulation for the treatment of plasma lipids and atherosclerosis.
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Affiliation(s)
- Xiaoyue Pan
- Department of Foundations of Medicine, New York University Long Island School of Medicine, Mineola, NY, USA.
- Diabetes and Obesity Research Center, New York University Winthrop Hospital, Mineola, NY, USA.
| | - Samantha Mota
- Department of Foundations of Medicine, New York University Long Island School of Medicine, Mineola, NY, USA
- Diabetes and Obesity Research Center, New York University Winthrop Hospital, Mineola, NY, USA
| | - Boyang Zhang
- Department of Foundations of Medicine, New York University Long Island School of Medicine, Mineola, NY, USA
- Diabetes and Obesity Research Center, New York University Winthrop Hospital, Mineola, NY, USA
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23
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Tateishi N, Morita S, Yamazaki I, Okumura H, Kominami M, Akazawa S, Funaki A, Tomimori N, Rogi T, Shibata H, Shibata S. Administration timing and duration-dependent effects of sesamin isomers on lipid metabolism in rats. Chronobiol Int 2019; 37:493-509. [DOI: 10.1080/07420528.2019.1700998] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Norifumi Tateishi
- Institute for Health Care Science, Suntory Wellness Ltd., Kyoto, Japan
- Laboratory of Physiology and Pharmacology, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
| | - Satoshi Morita
- Institute for Health Care Science, Suntory Wellness Ltd., Kyoto, Japan
| | - Izumi Yamazaki
- Institute for Health Care Science, Suntory Wellness Ltd., Kyoto, Japan
| | - Hitoshi Okumura
- Institute for Health Care Science, Suntory Wellness Ltd., Kyoto, Japan
| | - Masaru Kominami
- Institute for Health Care Science, Suntory Wellness Ltd., Kyoto, Japan
| | - Sota Akazawa
- Institute for Health Care Science, Suntory Wellness Ltd., Kyoto, Japan
| | - Ayuta Funaki
- Institute for Health Care Science, Suntory Wellness Ltd., Kyoto, Japan
| | - Namino Tomimori
- Institute for Health Care Science, Suntory Wellness Ltd., Kyoto, Japan
| | - Tomohiro Rogi
- Institute for Health Care Science, Suntory Wellness Ltd., Kyoto, Japan
| | - Hiroshi Shibata
- Institute for Health Care Science, Suntory Wellness Ltd., Kyoto, Japan
| | - Shigenobu Shibata
- Laboratory of Physiology and Pharmacology, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
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24
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Qin C, Sun J, Wang J, Han Y, Yang H, Shi Q, Lv Y, Hu P. Discovery of differentially expressed genes in the intestines of Pelteobagrus vachellii within a light/dark cycle. Chronobiol Int 2019; 37:339-352. [PMID: 31809585 DOI: 10.1080/07420528.2019.1690498] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
In aquaculture, it is necessary to determine of the diurnal biological variations in the intestines to determine an appropriate feeding schedule. The present study aimed to examine the transcriptomes of the Pelteobagrus vachellii intestines at four time points (0 h, 6 h, 12 h, and 18 h) within a light/dark cycle. In comparison with the zeitgeber time 0 (ZT0) transcriptomes, we identified 37,842 unigenes with significant differential expression, including 6,638; 9,626; and 7,938 that genes upregulated, and 3,507; 4,703; and 5,412 genes that were down regulated at 4, 12, and 24 h respectively. The differentially expressed unigenes were subjected to enrichment analysis, which indicated the involvement of the major digestive pathways, including digestion of protein, lipid and carbohydrate, catabolic process (protein, carbohydrate and lipid), and circadian rhythm. We selected 73 key differentially expressed genes (DEGs) from among these pathways and identified DEGs that showed increased expression at night, including those encoding trypsin-3, chymotrypsinogen 2, amino acid transporter, maltase-glucoamylase, facilitated glucose transporter, lipase, phospholipase, fatty acid-binding protein, fatty acid synthase, long-chain fatty acid transport protein, and apolipoprotein. Moreover, DEGs involved of circadian rhythm were identified, including brain-muscle-Arnt-like 1 (BMAL1), cryptochrome-1, circadian locomoter output cycles protein kaput (CLOCK) and period circadian protein homolog 1-3. Finally, the expression levels of 12 unigenes were analyzed using quantitative real-time PCR, which were in accordance with RNA-sequencing analysis. In general, the expression of genes related to the digestion of proteins, lipids, and carbohydrates showed upregulated expression at night; however, the peak time of expression of transporters for different nutrition molecules showed more diversification within the light/dark cycle.
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Affiliation(s)
- Chuanjie Qin
- Key Laboratory of Sichuan Province for Fishes Conservation and Utilization in the Upper Reaches of the Yangtze River, Neijiang Normal University, Neijiang, PR China.,College of Life Science, Neijiang Normal University, Neijiang, PR China
| | | | - Jun Wang
- Key Laboratory of Sichuan Province for Fishes Conservation and Utilization in the Upper Reaches of the Yangtze River, Neijiang Normal University, Neijiang, PR China.,College of Life Science, Neijiang Normal University, Neijiang, PR China
| | | | - He Yang
- Key Laboratory of Sichuan Province for Fishes Conservation and Utilization in the Upper Reaches of the Yangtze River, Neijiang Normal University, Neijiang, PR China.,College of Life Science, Neijiang Normal University, Neijiang, PR China
| | - Qingchao Shi
- Key Laboratory of Sichuan Province for Fishes Conservation and Utilization in the Upper Reaches of the Yangtze River, Neijiang Normal University, Neijiang, PR China.,College of Life Science, Neijiang Normal University, Neijiang, PR China
| | - Yunyun Lv
- Key Laboratory of Sichuan Province for Fishes Conservation and Utilization in the Upper Reaches of the Yangtze River, Neijiang Normal University, Neijiang, PR China.,College of Life Science, Neijiang Normal University, Neijiang, PR China
| | - Peng Hu
- Key Laboratory of Sichuan Province for Fishes Conservation and Utilization in the Upper Reaches of the Yangtze River, Neijiang Normal University, Neijiang, PR China.,College of Life Science, Neijiang Normal University, Neijiang, PR China
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25
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Ni Y, Wu L, Jiang J, Yang T, Wang Z, Ma L, Zheng L, Yang X, Wu Z, Fu Z. Late-Night Eating-Induced Physiological Dysregulation and Circadian Misalignment Are Accompanied by Microbial Dysbiosis. Mol Nutr Food Res 2019; 63:e1900867. [PMID: 31628714 DOI: 10.1002/mnfr.201900867] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 09/23/2019] [Indexed: 12/15/2022]
Abstract
SCOPE Irregular eating habits, such as late-night eating, will cause increased risk of obesity and other metabolic diseases. The aim of this study is to elucidate the impacts of late-night eating on physiological function and gut microbiota. METHODS AND RESULTS Male Wistar rats under 16 h/8 h-light/dark cycle are divided into four groups with specific dietary habits, which mimicked breakfast, lunch, dinner, and late-night eating. Late-night eating, including skipping dinner for a night eating (BLN) and skipping breakfast and having a night eating (LDN), causes an increase of body weight, which is associated with decreased physical activity. Additionally, late-night eating results in hepatic lipid accumulation and systemic inflammation in peripheral tissues, compared to those of free feeding (FF) or breakfast, lunch, and dinner (BLD) groups. The phases of key clock genes are similar in FF, BLD, and BLN groups, while LDN feeding causes an overall 4 h phase delay in peripheral tissues. Moreover, late-night eating, especially LDN feeding, results in a significant alternation in the compositions and functions of gut microbiota, which further contributes to the development of metabolic disorder. CONCLUSION Late-night eating causes physiological dysregulation and misalignment of circadian rhythm, together with microbial dysbiosis.
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Affiliation(s)
- Yinhua Ni
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Lianxin Wu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Jinlu Jiang
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Tianqi Yang
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Ze Wang
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Lingyan Ma
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Liujie Zheng
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Xin Yang
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Zeming Wu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
| | - Zhengwei Fu
- College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou, 310014, China
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26
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Ness KM, Strayer SM, Nahmod NG, Schade MM, Chang AM, Shearer GC, Buxton OM. Four nights of sleep restriction suppress the postprandial lipemic response and decrease satiety. J Lipid Res 2019; 60:1935-1945. [PMID: 31484696 DOI: 10.1194/jlr.p094375] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 08/20/2019] [Indexed: 12/16/2022] Open
Abstract
Chronic sleep restriction, or inadequate sleep, is associated with increased risk of cardiometabolic disease. Laboratory studies demonstrate that sleep restriction causes impaired whole-body insulin sensitivity and glucose disposal. Evidence suggests that inadequate sleep also impairs adipose tissue insulin sensitivity and the NEFA rebound during intravenous glucose tolerance tests, yet no studies have examined the effects of sleep restriction on high-fat meal lipemia. We assessed the effect of 5 h time in bed (TIB) per night for four consecutive nights on postprandial lipemia following a standardized high-fat dinner (HFD). Furthermore, we assessed whether one night of recovery sleep (10 h TIB) was sufficient to restore postprandial metabolism to baseline. We found that postprandial triglyceride (TG) area under the curve was suppressed by sleep restriction (P = 0.01), but returned to baseline values following one night of recovery. Sleep restriction decreased NEFAs throughout the HFD (P = 0.02) and NEFAs remained suppressed in the recovery condition (P = 0.04). Sleep restriction also decreased participant-reported fullness or satiety (P = 0.03), and decreased postprandial interleukin-6 (P < 0.01). Our findings indicate that four nights of 5 h TIB per night impair postprandial lipemia and that one night of recovery sleep may be adequate for recovery of TG metabolism, but not for markers of adipocyte function.
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Affiliation(s)
- Kelly M Ness
- Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA 16802.,Departments of Biobehavioral Health Pennsylvania State University, University Park, PA 16802.,Nutritional Sciences, Pennsylvania State University, University Park, PA 16802
| | - Stephen M Strayer
- Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA 16802.,Departments of Biobehavioral Health Pennsylvania State University, University Park, PA 16802
| | - Nicole G Nahmod
- Departments of Biobehavioral Health Pennsylvania State University, University Park, PA 16802
| | - Margeaux M Schade
- Departments of Biobehavioral Health Pennsylvania State University, University Park, PA 16802
| | - Anne-Marie Chang
- Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA 16802.,Departments of Biobehavioral Health Pennsylvania State University, University Park, PA 16802.,College of Nursing, Pennsylvania State University, University Park, PA 16802
| | - Gregory C Shearer
- Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA 16802.,Nutritional Sciences, Pennsylvania State University, University Park, PA 16802
| | - Orfeu M Buxton
- Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA 16802 .,Departments of Biobehavioral Health Pennsylvania State University, University Park, PA 16802.,Division of Sleep Medicine, Harvard Medical School, Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, and Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women's Hospital, Boston, MA 20115
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27
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Sussman W, Stevenson M, Mowdawalla C, Mota S, Ragolia L, Pan X. BMAL1 controls glucose uptake through paired-homeodomain transcription factor 4 in differentiated Caco-2 cells. Am J Physiol Cell Physiol 2019; 317:C492-C501. [PMID: 31216190 PMCID: PMC6766619 DOI: 10.1152/ajpcell.00058.2019] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 05/30/2019] [Accepted: 05/31/2019] [Indexed: 02/08/2023]
Abstract
The transcription factor aryl hydrocarbon receptor nuclear translocator-like protein-1 (BMAL1) is an essential regulator of the circadian clock, which controls the 24-h cycle of physiological processes such as nutrient absorption. To examine the role of BMAL1 in small intestinal glucose absorption, we used differentiated human colon adenocarcinoma cells (Caco-2 cells). Here, we show that BMAL1 regulates glucose uptake in differentiated Caco-2 cells and that this process is dependent on the glucose transporter sodium-glucose cotransporter 1 (SGLT1). Mechanistic studies show that BMAL1 regulates glucose uptake by controlling the transcription of SGLT1 involving paired-homeodomain transcription factor 4 (PAX4), a transcriptional repressor. This is supported by the observation that clustered regularly interspaced short palindromic repeats (CRISPR)-CRISPR-associated endonuclease Cas9 (Cas9) knockdown of PAX4 increases SGLT1 and glucose uptake. Chromatin immunoprecipitation (ChIP) and ChIP-quantitative PCR assays show that the knockdown or overexpression of BMAL1 decreases or increases the binding of PAX4 to the hepatocyte nuclear factor 1-α binding site of the SGLT1 promoter, respectively. These findings identify BMAL1 as a critical mediator of small intestine carbohydrate absorption and SGLT1.
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Affiliation(s)
- Whitney Sussman
- Department of Foundations of Medicine, New York University Long Island School of Medicine, Mineola, New York
- Diabetes and Obesity Research Center, New York University Winthrop Hospital, Mineola, New York
| | - Matthew Stevenson
- Department of Foundations of Medicine, New York University Long Island School of Medicine, Mineola, New York
- Diabetes and Obesity Research Center, New York University Winthrop Hospital, Mineola, New York
| | - Cyrus Mowdawalla
- Department of Foundations of Medicine, New York University Long Island School of Medicine, Mineola, New York
- Diabetes and Obesity Research Center, New York University Winthrop Hospital, Mineola, New York
| | - Samantha Mota
- Department of Foundations of Medicine, New York University Long Island School of Medicine, Mineola, New York
- Diabetes and Obesity Research Center, New York University Winthrop Hospital, Mineola, New York
| | - Louis Ragolia
- Department of Foundations of Medicine, New York University Long Island School of Medicine, Mineola, New York
- Diabetes and Obesity Research Center, New York University Winthrop Hospital, Mineola, New York
| | - Xiaoyue Pan
- Department of Foundations of Medicine, New York University Long Island School of Medicine, Mineola, New York
- Diabetes and Obesity Research Center, New York University Winthrop Hospital, Mineola, New York
- Department of Cell Biology, State University of New York Downstate Medical Center, Brooklyn, New York
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28
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NOCTURNIN Gene Diurnal Variation in Healthy Volunteers and Expression Levels in Shift Workers. BIOMED RESEARCH INTERNATIONAL 2019; 2019:7582734. [PMID: 31467910 PMCID: PMC6699378 DOI: 10.1155/2019/7582734] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Revised: 07/08/2019] [Accepted: 07/14/2019] [Indexed: 02/06/2023]
Abstract
Objective The NOCTURNIN gene links nutrient absorption and metabolism to the circadian clock. Shift workers are at a heightened risk of overweight and of developing obesity and metabolic syndrome. This study investigates the diurnal variation of NOCTURNIN in healthy volunteers and its expression levels in rotational shift and daytime workers. Methods NOCTURNIN expression levels were evaluated in peripheral blood lymphocytes from 15 healthy volunteers at 4-hour intervals for 24 h. Metabolic parameters and NOCTURNIN expression were measured in workers engaged in shift and daytime work. Results In the group of volunteers NOCTURNIN expression showed diurnal variation, with a peak at 8:00 AM. NOCTURNIN expression was higher in shift workers than in daytime workers. Multivariate analysis confirmed the role of shift work as an independent factor affecting NOCTURNIN expression. Notably, its level correlated directly with body mass index and inversely with total energy expenditure. Conclusions Measuring NOCTURNIN expression levels in human peripheral blood lymphocytes can improve investigations on the relationship between changes in circadian rhythm and metabolic disorders. Shift workers show higher NOCTURNIN levels than daytime workers.
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Voigt RM, Forsyth CB, Keshavarzian A. Circadian rhythms: a regulator of gastrointestinal health and dysfunction. Expert Rev Gastroenterol Hepatol 2019; 13:411-424. [PMID: 30874451 PMCID: PMC6533073 DOI: 10.1080/17474124.2019.1595588] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Circadian rhythms regulate much of gastrointestinal physiology including cell proliferation, motility, digestion, absorption, and electrolyte balance. Disruption of circadian rhythms can have adverse consequences including the promotion of and/or exacerbation of a wide variety of gastrointestinal disorders and diseases. Areas covered: In this review, we evaluate some of the many gastrointestinal functions that are regulated by circadian rhythms and how dysregulation of these functions may contribute to disease. This review also discusses some common gastrointestinal disorders that are known to be influenced by circadian rhythms as well as speculation about the mechanisms by which circadian rhythm disruption promotes dysfunction and disease pathogenesis. We discuss how knowledge of circadian rhythms and the advent of chrono-nutrition, chrono-pharmacology, and chrono-therapeutics might influence clinical practice. Expert opinion: As our knowledge of circadian biology increases, it may be possible to incorporate strategies that take advantage of circadian rhythms and chronotherapy to prevent and/or treat disease.
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Affiliation(s)
- Robin M Voigt
- Rush Department of Medicine, Division of Digestive Diseases and Nutrition, Rush University Medical Center, Chicago, IL, USA
| | - Christopher B Forsyth
- Rush Department of Medicine, Division of Digestive Diseases and Nutrition, Rush University Medical Center, Chicago, IL, USA
| | - Ali Keshavarzian
- Rush Department of Medicine, Division of Digestive Diseases and Nutrition, Rush University Medical Center, Chicago, IL, USA
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30
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Is it Time to Change Radiotherapy: The Dawning of Chronoradiotherapy? Clin Oncol (R Coll Radiol) 2019; 31:326-335. [DOI: 10.1016/j.clon.2019.02.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 02/15/2019] [Indexed: 11/23/2022]
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31
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Chen HJ, Chuang SY, Chang HY, Pan WH. Energy intake at different times of the day: Its association with elevated total and LDL cholesterol levels. Nutr Metab Cardiovasc Dis 2019; 29:390-397. [PMID: 30782508 DOI: 10.1016/j.numecd.2019.01.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Revised: 01/03/2019] [Accepted: 01/04/2019] [Indexed: 11/17/2022]
Abstract
BACKGROUND AND AIMS This study examined the association between macronutrient intake at different times of the day and blood lipid levels. METHODS AND RESULTS The study was based on the Nutrition and Health Survey in Taiwan, a cross-sectional study of non-institutionalized and non-pregnant healthy adults (≥19-years-old). A one-day (24 h) dietary recall assessed participants' food intake. Fasting plasma triglycerides, total cholesterol, and high-density lipoprotein (HDL) cholesterol were determined. Low-density lipoprotein (LDL) cholesterol was estimated based on the Friedewald formula. According to the data of eligible subjects (n = 1283), the time of energy intake was categorized into three meal times 0500-0929 (morning), 1130-1329 (noon), and 1730-2029 (evening), along with three snack times 0930-1129 (mid-morning), 1330-1729 (afternoon), and 2030-0459 (night). Energy and macronutrient intake were calculated for the 6 time periods, based on 24 h recall data. An adjusted regression model showed that by transferring 100 kcal intake at night to the morning or noon, LDL cholesterol would be lower by 1.46 (95% CI: 2.42-0.50) and 1.27 mg/dL (95% CI: 2.24-0.30), respectively. Transferring 100 kcal of fat intake at night to earlier periods was associated with a lower LDL cholesterol level, especially transferring to noontime (significantly lower by 5.21 mg/dL, 95% CI: [7.42-2.99]) and evening (significantly lower by 3.19 mg/dL, 95% CI: [6.29-0.08]). CONCLUSIONS Total cholesterol and LDL cholesterol had the same pattern of association with the timing of energy intake. The study showed that elevated total and LDL cholesterol were positively associated with nighttime energy and fat intake.
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Affiliation(s)
- H J Chen
- Institute of Public Health, School of Medicine, National Yang-Ming University, Taipei, Taiwan.
| | - S Y Chuang
- Institute of Population Health Sciences, National Health Research Institutes, Zhunan, Miaoli, Taiwan
| | - H Y Chang
- Institute of Population Health Sciences, National Health Research Institutes, Zhunan, Miaoli, Taiwan
| | - W H Pan
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
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32
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Kawai M, Kinoshita S, Yamazaki M, Yamamoto K, Rosen CJ, Shimba S, Ozono K, Michigami T. Intestinal clock system regulates skeletal homeostasis. JCI Insight 2019; 4:121798. [PMID: 30730853 PMCID: PMC6483519 DOI: 10.1172/jci.insight.121798] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Accepted: 01/30/2019] [Indexed: 12/14/2022] Open
Abstract
The circadian clock network is an evolutionarily conserved system involved in the regulation of metabolic homeostasis; however, its impacts on skeletal metabolism remain largely unknown. We herein demonstrated that the circadian clock network in the intestines plays pivotal roles in skeletal metabolism such that the lack of the Bmal1 gene in the intestines (Bmal1Int-/- mice) caused bone loss, with bone resorption being activated and bone formation suppressed. Mechanistically, Clock protein interaction with the vitamin D receptor (VDR) accelerated its binding to the VDR response element by enhancing histone acetylation in a circadian-dependent manner, and this was lost in Bmal1Int-/- mice because nuclear translocation of Clock required the presence of Bmal1. Accordingly, the rhythmic expression of VDR target genes involved in transcellular calcium (Ca) absorption was created, and this was not observed in Bmal1Int-/- mice. As a result, transcellular Ca absorption was impaired and bone resorption was activated in Bmal1Int-/- mice. Additionally, sympathetic tone, the activation of which suppresses bone formation, was elevated through afferent vagal nerves in Bmal1Int-/- mice, the blockade of which partially recovered bone loss by increasing bone formation and suppressing bone resorption in Bmal1Int-/- mice. These results demonstrate that the intestinal circadian system regulates skeletal bone homeostasis.
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Affiliation(s)
- Masanobu Kawai
- Department of Bone and Mineral Research, Research Institute, Osaka Women’s and Children’s Hospital, Izumi, Osaka, Japan
| | - Saori Kinoshita
- Department of Bone and Mineral Research, Research Institute, Osaka Women’s and Children’s Hospital, Izumi, Osaka, Japan
| | - Miwa Yamazaki
- Department of Bone and Mineral Research, Research Institute, Osaka Women’s and Children’s Hospital, Izumi, Osaka, Japan
| | - Keiko Yamamoto
- Department of Bone and Mineral Research, Research Institute, Osaka Women’s and Children’s Hospital, Izumi, Osaka, Japan
| | | | - Shigeki Shimba
- Department of Health Science, School of Pharmacy, Nihon University, Funabashi, Chiba, Japan
| | - Keiichi Ozono
- Department of Pediatrics, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - Toshimi Michigami
- Department of Bone and Mineral Research, Research Institute, Osaka Women’s and Children’s Hospital, Izumi, Osaka, Japan
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Yu B, Peng XH, Wang LY, Wang AB, Su YY, Chen JH, Zhang XW, Zhao DZ, Wang H, Pang DX, Ouyang HS, Tang XC, Zhang MJ. Abnormality of intestinal cholesterol absorption in ApcMin/+ mice with colon cancer cachexia. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2019; 12:759-767. [PMID: 31933883 PMCID: PMC6945172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Accepted: 01/24/2019] [Indexed: 06/10/2023]
Abstract
Colorectal cancer syndrome has been one of the greatest concerns in the world, particularly in developed countries. Several epidemiological studies have shown that dyslipidemia may be associated with the progression of intestinal cachexia, but there is little research on the function of the small intestine, which is involved in blood lipid metabolism, in dyslipidemia. In the present study, we aimed to explore the function of intestinal cholesterol absorption in the ApcMin/+ mouse model using an intestinal lipid absorption test. We found that both triglyceride (TG) and total cholesterol (TC) uptake were inhibited in the intestine of ApcMin/+ mice with age and the intestinal peroxisome proliferator-activated receptor α (PPARα) downregulated the processes of β-oxidation, oxidative stress response, and cholesterol absorption in APC-deficient mice. In addition, reduced expression levels of farnesoid X receptor (FXR) and apical sodium-dependent bile acid transporter (ASBT) indicated that bile acid metabolism might be associated with intestinal cholesterol absorption in ApcMin/+ mice. Thus, our data suggested that the intestine plays an essential role in cholesterol uptake and that bile acid metabolism seems to cause a decrease in intestinal cholesterol uptake in ApcMin/+ mice.
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Affiliation(s)
- Biao Yu
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University Changchun, Jilin Province, China
| | - Xiao-Huan Peng
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University Changchun, Jilin Province, China
| | - Ling-Yu Wang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University Changchun, Jilin Province, China
| | - An-Bei Wang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University Changchun, Jilin Province, China
| | - Yan-Yan Su
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University Changchun, Jilin Province, China
| | - Jia-Huan Chen
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University Changchun, Jilin Province, China
| | - Xin-Wei Zhang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University Changchun, Jilin Province, China
| | - Da-Zhong Zhao
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University Changchun, Jilin Province, China
| | - He Wang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University Changchun, Jilin Province, China
| | - Da-Xin Pang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University Changchun, Jilin Province, China
| | - Hong-Sheng Ouyang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University Changchun, Jilin Province, China
| | - Xiao-Chun Tang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University Changchun, Jilin Province, China
| | - Ming-Jun Zhang
- Jilin Provincial Key Laboratory of Animal Embryo Engineering, College of Animal Sciences, Jilin University Changchun, Jilin Province, China
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Parkar SG, Kalsbeek A, Cheeseman JF. Potential Role for the Gut Microbiota in Modulating Host Circadian Rhythms and Metabolic Health. Microorganisms 2019; 7:microorganisms7020041. [PMID: 30709031 PMCID: PMC6406615 DOI: 10.3390/microorganisms7020041] [Citation(s) in RCA: 146] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 01/26/2019] [Accepted: 01/28/2019] [Indexed: 02/07/2023] Open
Abstract
This article reviews the current evidence associating gut microbiota with factors that impact host circadian-metabolic axis, such as light/dark cycles, sleep/wake cycles, diet, and eating patterns. We examine how gut bacteria possess their own daily rhythmicity in terms of composition, their localization to intestinal niches, and functions. We review evidence that gut bacteria modulate host rhythms via microbial metabolites such as butyrate, polyphenolic derivatives, vitamins, and amines. Lifestyle stressors such as altered sleep and eating patterns that may disturb the host circadian system also influence the gut microbiome. The consequent disruptions to microbiota-mediated functions such as decreased conjugation of bile acids or increased production of hydrogen sulfide and the resultant decreased production of butyrate, in turn affect substrate oxidation and energy regulation in the host. Thus, disturbances in microbiome rhythms may at least partially contribute to an increased risk of obesity and metabolic syndrome associated with insufficient sleep and circadian misalignment. Good sleep and a healthy diet appear to be essential for maintaining gut microbial balance. Manipulating daily rhythms of gut microbial abundance and activity may therefore hold promise for a chrononutrition-based approach to consolidate host circadian rhythms and metabolic homeorhesis.
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Affiliation(s)
- Shanthi G Parkar
- The New Zealand Institute for Plant & Food Research Limited, Private Bag 11600, Palmerston North 4442, New Zealand.
| | - Andries Kalsbeek
- Department of Hypothalamic Integration Mechanisms, Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences, Meibergdreef 47, 1105BA Amsterdam, The Netherlands.
- Department of Endocrinology and Metabolism, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105AZ Amsterdam, The Netherlands.
| | - James F Cheeseman
- Department of Anaesthesiology, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
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Nishikawa H, Enomoto H, Yoh K, Iwata Y, Sakai Y, Kishino K, Ikeda N, Takashima T, Aizawa N, Takata R, Hasegawa K, Ishii N, Yuri Y, Nishimura T, Iijima H, Nishiguchi S. Effect of Sarcopenia on Sleep Disturbance in Patients with Chronic Liver Diseases. J Clin Med 2018; 8:jcm8010016. [PMID: 30583494 PMCID: PMC6352199 DOI: 10.3390/jcm8010016] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 12/13/2018] [Accepted: 12/20/2018] [Indexed: 01/01/2023] Open
Abstract
We sought to investigate the influence of sarcopenia as defined by muscle strength and skeletal muscle mass (SMM) on sleep disturbance as evaluated by the Japanese version of Pittsburgh Sleep Quality Index (PSQI-J) in chronic liver diseases (CLDs) (n = 419). Muscle strength and muscle mass were determined by grip strength (GS) and SMM using bioimpedance analysis. Patients were classified into four types: type A (n = 61); decreased GS and decreased SMM; type B (n = 45); decreased GS and non-decreased SMM; type C (n = 102); non-decreased GS and decreased SMM; and type D (n = 211); non-decreased GS and non-decreased SMM. Factors associated with PSQI-J score 6 or more were examined. PSQI-J score 0–5 (normal) was found in 253 (60.4%); 6–8 (mild) in 97 (23.2%); 9–11 (moderate) in 45 (10.7%) and 12 or more (severe) in 24 (5.7%). Univariate analysis identified three factors to be significantly associated with PSQI-J score 6 or more: presence of liver cirrhosis (LC) (P = 0.0132); our classification of type A; B; C and D (P < 0.0001) and serum albumin level (P = 0.0041). Multivariate analysis showed that type A (P = 0.0021) and type B (P = 0.0220) were significant independent factors. In conclusion, sarcopenia in CLDs appears to be closely associated with sleep disturbance mainly due to muscle strength decline.
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Affiliation(s)
- Hiroki Nishikawa
- Division of Hepatobiliary and Pancreatic disease, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan.
| | - Hirayuki Enomoto
- Division of Hepatobiliary and Pancreatic disease, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan.
| | - Kazunori Yoh
- Division of Hepatobiliary and Pancreatic disease, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan.
| | - Yoshinori Iwata
- Division of Hepatobiliary and Pancreatic disease, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan.
| | - Yoshiyuki Sakai
- Division of Hepatobiliary and Pancreatic disease, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan.
| | - Kyohei Kishino
- Division of Hepatobiliary and Pancreatic disease, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan.
| | - Naoto Ikeda
- Division of Hepatobiliary and Pancreatic disease, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan.
| | - Tomoyuki Takashima
- Division of Hepatobiliary and Pancreatic disease, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan.
| | - Nobuhiro Aizawa
- Division of Hepatobiliary and Pancreatic disease, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan.
| | - Ryo Takata
- Division of Hepatobiliary and Pancreatic disease, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan.
| | - Kunihiro Hasegawa
- Division of Hepatobiliary and Pancreatic disease, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan.
| | - Noriko Ishii
- Division of Hepatobiliary and Pancreatic disease, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan.
| | - Yukihisa Yuri
- Division of Hepatobiliary and Pancreatic disease, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan.
| | - Takashi Nishimura
- Division of Hepatobiliary and Pancreatic disease, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan.
| | - Hiroko Iijima
- Division of Hepatobiliary and Pancreatic disease, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan.
| | - Shuhei Nishiguchi
- Division of Hepatobiliary and Pancreatic disease, Department of Internal Medicine, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, Japan.
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Poggiogalle E, Jamshed H, Peterson CM. Circadian regulation of glucose, lipid, and energy metabolism in humans. Metabolism 2018; 84:11-27. [PMID: 29195759 PMCID: PMC5995632 DOI: 10.1016/j.metabol.2017.11.017] [Citation(s) in RCA: 314] [Impact Index Per Article: 52.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 11/01/2017] [Accepted: 11/24/2017] [Indexed: 12/21/2022]
Abstract
The circadian system orchestrates metabolism in daily 24-hour cycles. Such rhythms organize metabolism by temporally separating opposing metabolic processes and by anticipating recurring feeding-fasting cycles to increase metabolic efficiency. Although animal studies demonstrate that the circadian system plays a pervasive role in regulating metabolism, it is unclear how, and to what degree, circadian research in rodents translates into humans. Here, we review evidence that the circadian system regulates glucose, lipid, and energy metabolism in humans. Using a range of experimental protocols, studies in humans report circadian rhythms in glucose, insulin, glucose tolerance, lipid levels, energy expenditure, and appetite. Several of these rhythms peak in the biological morning or around noon, implicating earlier in the daytime is optimal for food intake. Importantly, disruptions in these rhythms impair metabolism and influence the pathogenesis of metabolic diseases. We therefore also review evidence that circadian misalignment induced by mistimed light exposure, sleep, or food intake adversely affects metabolic health in humans. These interconnections among the circadian system, metabolism, and behavior underscore the importance of chronobiology for preventing and treating type 2 diabetes, obesity, and hyperlipidemia.
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Affiliation(s)
- Eleonora Poggiogalle
- Department of Experimental Medicine, Medical Pathophysiology, Food Science and Endocrinology Section, Sapienza University, Rome, Italy
| | - Humaira Jamshed
- Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Courtney M Peterson
- Department of Nutrition Sciences, University of Alabama at Birmingham, Birmingham, AL, USA.
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Kim MO, Seo JH, Kwon EB, Kang MJ, Lee SU, Moon DO, Lee MK, Lee CH, Lee HS. Aceriphyllum rossii Exerts Lipid-Lowering Action in Both Normal and Hyperlipidemic Mice. Nat Prod Commun 2018. [DOI: 10.1177/1934578x1801300423] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
This study aimed to evaluate the lipid-lowering effect of the MeOH extract of Aceriphyllum rossii and its CHCl3 fraction, as well as its inhibitory activity on DGAT in vitro, in normal and hyperlipidemic mice. We separated the MeOH extract of A. rossii into two portions, a CHCl3-soluble part and the remaining water residue, and performed DGAT enzymatic activity assay on them. Further assessment carried out to reveal that the MeOH extract and its CHCl3 fraction suppress the intestinal TG absorption after an acute lipid challenge, and ameliorate hyperlipidemia as well as obesity-related parameters (body weight gain, serum lipid profiles, and several adipose tissue weights) in HFD-induced obese mice. First, the MeOH extract and its CHCl3 fraction strongly inhibit DGAT1 and DGAT2 in vitro enzymatic activity. Second, the MeOH extract and the CHCl3 fraction inhibit intestinal TG absorption after an acute lipid challenge in mice. Finally, the CHCl3 fraction ameliorates various parameters of HFD-induced obesity mice, including body weight gain and serum levels of TG and glucose. Data obtained from the results obviously indicated that A. rossii prevents HFD-induced hyperlipidemia as well as obesity in mice possibly by inhibiting DGAT activity. We suggest that A. rossii MeOH extract and its CHCl3 fraction would be a useful material for the therapy of hyperlipidemia.
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Affiliation(s)
- Mun Ock Kim
- Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, 30, Yeongudanji-ro, Ochang, Cheongju, Chungbuk 28116, Republic of Korea
| | - Jee Hee Seo
- Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, 30, Yeongudanji-ro, Ochang, Cheongju, Chungbuk 28116, Republic of Korea
| | - Eun Bin Kwon
- Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, 30, Yeongudanji-ro, Ochang, Cheongju, Chungbuk 28116, Republic of Korea
- College of Pharmacy, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Myung Ji Kang
- Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, 30, Yeongudanji-ro, Ochang, Cheongju, Chungbuk 28116, Republic of Korea
- College of Pharmacy, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Su Ui Lee
- Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, 30, Yeongudanji-ro, Ochang, Cheongju, Chungbuk 28116, Republic of Korea
| | - Dong Oh Moon
- Department of Biology Education, Daegu University, Gyeongsan-si, Gyeongsangbuk 38453, Republic of Korea
| | - Mi Kyeong Lee
- College of Pharmacy, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Chul-Ho Lee
- Laboratory Animal Center, Korea Research Institute of Bioscience and Biotechnology, Yuseong-gu, Daejeon 34141, Republic of Korea
| | - Hyun Sun Lee
- Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, 30, Yeongudanji-ro, Ochang, Cheongju, Chungbuk 28116, Republic of Korea
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Blanco AM, Gómez-Boronat M, Madera D, Valenciano AI, Alonso-Gómez AL, Delgado MJ. First evidence of nocturnin in fish: two isoforms in goldfish differentially regulated by feeding. Am J Physiol Regul Integr Comp Physiol 2017; 314:R304-R312. [PMID: 29070504 DOI: 10.1152/ajpregu.00241.2017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Nocturnin (NOC) is a unique deadenylase with robust rhythmic expression involved in the regulation of metabolic processes in mammals. Currently, the possible presence of NOC in fish is unknown. This report aimed to identify NOC in a fish model, the goldfish ( Carassius auratus), and to study the possible regulation of its expression by feeding. Two partial-length cDNAs of 293 and 223 bp, named nocturnin-a ( noc-a) and nocturnin-b ( noc-b), were identified and found to be highly conserved among vertebrates. Both mRNAs show a similar widespread distribution in central and peripheral tissues, with higher levels detected for noc-a compared with noc-b. The periprandial expression profile revealed that noc-a mRNAs rise sharply after a meal in hypothalamus, intestinal bulb, and liver, whereas almost no changes were observed for noc-b. Food deprivation was found to exert opposite effects on the expression of both NOCs (generally inhibitory for noc-a, and stimulatory for noc-b) in the three mentioned tissues. A single meal after a 48-h food deprivation period reversed (totally or partially) the fasting-induced decreases in noc-a transcripts in all studied tissues and the increases in noc-b expression in the intestinal bulb. Together, this study offers the first report of NOC in fish and shows a high dependence of its expression on feeding and nutritional status. The differential responses to feeding of the two NOCs raise the possibility that they might be underlying different physiological mechanisms (e.g., food intake, lipid mobilization, energy homeostasis) in fish.
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Affiliation(s)
- Ayelén M Blanco
- Departamento de Fisiología (Fisiología Animal II), Facultad de Biología, Universidad Complutense de Madrid , Madrid , Spain
| | - Miguel Gómez-Boronat
- Departamento de Fisiología (Fisiología Animal II), Facultad de Biología, Universidad Complutense de Madrid , Madrid , Spain
| | - Diego Madera
- Departamento de Fisiología (Fisiología Animal II), Facultad de Biología, Universidad Complutense de Madrid , Madrid , Spain
| | - Ana I Valenciano
- Departamento de Fisiología (Fisiología Animal II), Facultad de Biología, Universidad Complutense de Madrid , Madrid , Spain
| | - Angel L Alonso-Gómez
- Departamento de Fisiología (Fisiología Animal II), Facultad de Biología, Universidad Complutense de Madrid , Madrid , Spain
| | - María J Delgado
- Departamento de Fisiología (Fisiología Animal II), Facultad de Biología, Universidad Complutense de Madrid , Madrid , Spain
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Versteeg RI, Stenvers DJ, Visintainer D, Linnenbank A, Tanck MW, Zwanenburg G, Smilde AK, Fliers E, Kalsbeek A, Serlie MJ, la Fleur SE, Bisschop PH. Acute Effects of Morning Light on Plasma Glucose and Triglycerides in Healthy Men and Men with Type 2 Diabetes. J Biol Rhythms 2017; 32:130-142. [PMID: 28470119 PMCID: PMC5423535 DOI: 10.1177/0748730417693480] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Ambient light intensity is signaled directly to hypothalamic areas that regulate energy metabolism. Observational studies have shown associations between ambient light intensity and plasma glucose and lipid levels, but human data on the acute metabolic effects of light are scarce. Since light is the main signal indicating the onset of the diurnal phase of physical activity and food intake in humans, we hypothesized that bright light would affect glucose and lipid metabolism. Therefore, we determined the acute effects of bright light on plasma glucose and lipid concentrations in 2 randomized crossover trials: (1) in 8 healthy lean men and (2) in 8 obese men with type 2 diabetes. From 0730 h, subjects were exposed to either bright light (4000 lux) or dim light (10 lux) for 5 h. After 1 h of light exposure, subjects consumed a 600-kcal mixed meal. Primary endpoints were fasting and postprandial plasma glucose levels. In healthy men, bright light did not affect fasting or postprandial plasma glucose levels. However, bright light increased fasting and postprandial plasma triglycerides. In men with type 2 diabetes, bright light increased fasting and postprandial glucose levels. In men with type 2 diabetes, bright light did not affect fasting triglyceride levels but increased postprandial triglyceride levels. We show that ambient light intensity acutely affects human plasma glucose and triglyceride levels. Our findings warrant further research into the consequences of the metabolic effects of light for the diagnosis and prevention of hyperglycemia and dyslipidemia.
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Affiliation(s)
- Ruth I Versteeg
- Department of Endocrinology and Metabolism, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Dirk J Stenvers
- Department of Endocrinology and Metabolism, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Dana Visintainer
- Department of Endocrinology and Metabolism, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Andre Linnenbank
- Department of Experimental Cardiology, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Michael W Tanck
- Department of Clinical Epidemiology, Biostatistics and Bioinformatics, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Gooitzen Zwanenburg
- Biosystem Data Analysis Group, University of Amsterdam, Amsterdam, The Netherlands
| | - Age K Smilde
- Biosystem Data Analysis Group, University of Amsterdam, Amsterdam, The Netherlands
| | - Eric Fliers
- Department of Endocrinology and Metabolism, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Andries Kalsbeek
- Department of Endocrinology and Metabolism, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.,Hypothalamic Integration Mechanisms, Netherlands Institute for Neuroscience, Royal Netherlands Academy of Arts and Sciences, Amsterdam, The Netherlands
| | - Mireille J Serlie
- Department of Endocrinology and Metabolism, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Susanne E la Fleur
- Department of Endocrinology and Metabolism, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Peter H Bisschop
- Department of Endocrinology and Metabolism, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
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Abstract
PURPOSE OF REVIEW Abdominal obesity is associated with a number of important metabolic abnormalities including liver steatosis, insulin resistance and an atherogenic lipoprotein profile (termed dyslipidemia). The purpose of this review is to highlight recent progress in understanding the pathogenesis of this dyslipidemia. RECENT FINDINGS Recent results from kinetic studies using stable isotopes indicate that the hypertriglyceridemia associated with abdominal obesity stems from dual mechanisms: (1) enhanced secretion of triglyceride-rich lipoproteins and (2) impaired clearance of these lipoproteins. The over-secretion of large triglyceride-rich VLDLs from the liver is linked to hepatic steatosis and increased visceral adiposity. The impaired clearance of triglyceride-rich lipoproteins is linked to increased levels of apolipoprotein C-III, a key regulator of triglyceride metabolism. SUMMARY Elucidation of the pathogenesis of the atherogenic dyslipidemia in abdominal obesity combined with the development of novel treatments based on apolipoprotein C-III may in the future lead to better prevention, diagnosis and treatment of the atherogenic dyslipidemia in abdominal obesity.
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Affiliation(s)
- Elias Björnson
- aDepartment of Molecular and Clinical Medicine, University of Gothenburg and Sahlgrenska University Hospital, Gothenburg, Sweden bResearch Programs Unit, Diabetes and Obesity, University of Helsinki and Heart and Lung Center, Helsinki University Hospital, Helsinki, Finland
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Mansbach CM, Siddiqi S. Control of chylomicron export from the intestine. Am J Physiol Gastrointest Liver Physiol 2016; 310:G659-68. [PMID: 26950854 DOI: 10.1152/ajpgi.00228.2015] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 02/22/2016] [Indexed: 01/31/2023]
Abstract
The control of chylomicron output by the intestine is a complex process whose outlines have only recently come into focus. In this review we will cover aspects of chylomicron formation and prechylomicron vesicle generation that elucidate potential control points. Substrate (dietary fatty acids and monoacylglycerols) availability is directly related to the output rate of chylomicrons. These substrates must be converted to triacylglycerol before packaging in prechylomicrons by a series of endoplasmic reticulum (ER)-localized acylating enzymes that rapidly convert fatty acids and monoacylglycerols to triacylglycerol. The packaging of the prechylomicron with triacylglycerol is controlled by the microsomal triglyceride transport protein, another potential limiting step. The prechylomicrons, once loaded with triacylglycerol, are ready to be incorporated into the prechylomicron transport vesicle that transports the prechylomicron from the ER to the Golgi. Control of this exit step from the ER, the rate-limiting step in the transcellular movement of the triacylglycerol, is a multistep process involving the activation of PKCζ, the phosphorylation of Sar1b, releasing the liver fatty acid binding protein from a heteroquatromeric complex, which enables it to bind to the ER and organize the prechylomicron transport vesicle budding complex. We propose that control of PKCζ activation is the major physiological regulator of chylomicron output.
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Affiliation(s)
- Charles M Mansbach
- Department of Medicine, Division of Gastroenterology, University of Tennessee Health Science Center, Memphis, Tennessee; and Department of Medicine, Veterans Affairs Medical Center, Memphis, Tennessee
| | - Shahzad Siddiqi
- Department of Medicine, Division of Gastroenterology, University of Tennessee Health Science Center, Memphis, Tennessee; and Department of Medicine, Veterans Affairs Medical Center, Memphis, Tennessee
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Beneficial Effect of Moderate Exercise in Kidney of Rat after Chronic Consumption of Cola Drinks. PLoS One 2016; 11:e0152461. [PMID: 27031710 PMCID: PMC4816544 DOI: 10.1371/journal.pone.0152461] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Accepted: 03/15/2016] [Indexed: 01/25/2023] Open
Abstract
Aim The purpose of this study was to investigate the effect of moderate intensity exercise on kidney in an animal model of high consumption of cola soft drinks. Methods Forty-eight Wistar Kyoto rats (age: 16 weeks; weight: 350–400 g) were assigned to the following groups: WR (water runners) drank water and submitted to aerobic exercise; CR (cola runners) drank cola and submitted to aerobic exercise; WS (water sedentary) and CS (cola sedentary), not exercised groups. The aerobic exercise was performed for 5 days per week throughout the study (24 weeks) and the exercise intensity was gradually increased during the first 8 weeks until it reached 20 meters / minute for 30 minutes. Body weight, lipid profile, glycemia, plasma creatinine levels, atherogenic index of plasma (AIP) and systolic blood pressure (SBP) were determined. After 6 months all rats were sacrificed. A kidney histopathological score was obtained using a semiquantitative scale. Glomerular size and glomerulosclerosis were estimated by point-counting. The oxidative stress and pro-inflammatory status were explored by immunohistochemistry. A one way analysis of variance (ANOVA) with Tukey-Kramer post-hoc test or the Kruskal-Wallis test with Dunn’s post-hoc test was used for statistics. A value of p < 0.05 was considered significant. Results At 6 months, an increased consumption of cola soft drink was shown in CS and CR compared with water consumers (p<0.0001). Chronic cola consumption was associated with increased plasma triglycerides, AIP, heart rate, histopathological score, glomerulosclerosis, oxidative stress and pro-inflammatory status. On the other hand, moderate exercise prevented these findings. No difference was observed in the body weight, SBP, glycemia, cholesterol and plasma creatinine levels across experimental groups. Conclusions This study warns about the consequences of chronic consumption of cola drinks on lipid metabolism, especially regarding renal health. Additionally, these findings emphasize the protective role of exercise training on renal damage.
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Preventive obesity agent montmorillonite adsorbs dietary lipids and enhances lipid excretion from the digestive tract. Sci Rep 2016; 6:19659. [PMID: 26891902 PMCID: PMC4759552 DOI: 10.1038/srep19659] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Accepted: 12/16/2015] [Indexed: 01/04/2023] Open
Abstract
Western diets are typically high in fat and are associated with long-term complications such as obesity and hepatic steatosis. Because of the enjoyable taste of high-fat diets (HFDs), we are interested in determining how to decrease lipid absorption and enhance lipid excretion from the digestive tract after the consumption of eating fatty foods. Montmorillonite was initially characterized as a gastrointestinal mucosal barrier protective agent for the treatment of diarrhoea. Dietary lipid adsorbent- montmorillonite (DLA-M) was isolated and purified from Xinjiang montmorillonite clay via the water extraction method. Here, we show that DLA-M has an unexpected role in preventing obesity, hyperlipidaemia and hepatic steatosis in HFD-fed rats. Interestingly, combined application of polarized light microscopy and lipid staining analyses, showed that DLA-M crystals have dietary lipid-adsorbing ability in vitro and in vivo, which enhances lipid excretion via bowel movements. In summary, our results indicate that DLA-M prevent HFD-induced obesity. This novel dietary lipid-adsorbing agent can help prevent obesity and its comorbidities.
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Dueck A, Berger C, Wunsch K, Thome J, Cohrs S, Reis O, Haessler F. The role of sleep problems and circadian clock genes in attention-deficit hyperactivity disorder and mood disorders during childhood and adolescence: an update. J Neural Transm (Vienna) 2015; 124:127-138. [DOI: 10.1007/s00702-015-1455-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Accepted: 09/02/2015] [Indexed: 12/13/2022]
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Abstract
Various intestinal functions exhibit circadian rhythmicity. Disruptions in these rhythms as in shift workers and transcontinental travelers are associated with intestinal discomfort. Circadian rhythms are controlled at the molecular level by core clock and clock-controlled genes. These clock genes are expressed in intestinal cells, suggesting that they might participate in the circadian regulation of intestinal functions. A major function of the intestine is nutrient absorption. Here, we will review absorption of proteins, carbohydrates, and lipids and circadian regulation of various transporters involved in their absorption. A better understanding of circadian regulation of intestinal absorption might help control several metabolic disorders and attenuate intestinal discomfort associated with disruptions in sleep-wake cycles.
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Affiliation(s)
- M Mahmood Hussain
- Department of Cell Biology and Pediatrics, SUNY Downstate Medical Center, Brooklyn, New York, USA, and VA New York Harbor Healthcare System, Brooklyn, New York, USA
| | - Xiaoyue Pan
- Department of Cell Biology and Pediatrics, SUNY Downstate Medical Center, Brooklyn, New York, USA, and VA New York Harbor Healthcare System, Brooklyn, New York, USA
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Abstract
Dietary lipids are efficiently absorbed by the small intestine, incorporated into triglyceride-rich lipoproteins (chylomicrons), and transported in the circulation to various tissues. Intestinal lipid absorption and mobilization and chylomicron synthesis and secretion are highly regulated processes. Elevated chylomicron production rate contributes to the dyslipidemia seen in common metabolic disorders such as insulin-resistant states and type 2 diabetes and likely increases the risk for atherosclerosis seen in these conditions. An in-depth understanding of the regulation of chylomicron production may provide leads for the development of drugs that could be of therapeutic utility in the prevention of dyslipidemia and atherosclerosis. Chylomicron secretion is subject to regulation by various factors, including diet, body weight, genetic variants, hormones, nutraceuticals, medications, and emerging interventions such as bariatric surgical procedures. In this review we discuss the regulation of chylomicron production, mechanisms that underlie chylomicron dysregulation, and potential avenues for future research.
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Affiliation(s)
- Satya Dash
- Departments of Medicine and Physiology and the Banting & Best Diabetes Centre, University of Toronto, Toronto, Ontario, M5G 2C4 Canada;
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