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Peters B, Vahlhaus J, Pivovarova-Ramich O. Meal timing and its role in obesity and associated diseases. Front Endocrinol (Lausanne) 2024; 15:1359772. [PMID: 38586455 PMCID: PMC10995378 DOI: 10.3389/fendo.2024.1359772] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 03/01/2024] [Indexed: 04/09/2024] Open
Abstract
Meal timing emerges as a crucial factor influencing metabolic health that can be explained by the tight interaction between the endogenous circadian clock and metabolic homeostasis. Mistimed food intake, such as delayed or nighttime consumption, leads to desynchronization of the internal circadian clock and is associated with an increased risk for obesity and associated metabolic disturbances such as type 2 diabetes and cardiovascular diseases. Conversely, meal timing aligned with cellular rhythms can optimize the performance of tissues and organs. In this review, we provide an overview of the metabolic effects of meal timing and discuss the underlying mechanisms. Additionally, we explore factors influencing meal timing, including internal determinants such as chronotype and genetics, as well as external influences like social factors, cultural aspects, and work schedules. This review could contribute to defining meal-timing-based recommendations for public health initiatives and developing guidelines for effective lifestyle modifications targeting the prevention and treatment of obesity and associated metabolic diseases. Furthermore, it sheds light on crucial factors that must be considered in the design of future food timing intervention trials.
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Affiliation(s)
- Beeke Peters
- Research Group Molecular Nutritional Medicine and Department of Human Nutrition, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
- German Center for Diabetes Research (DZD), München, Germany
| | - Janna Vahlhaus
- Research Group Molecular Nutritional Medicine and Department of Human Nutrition, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
- University of Lübeck, Lübeck, Germany
| | - Olga Pivovarova-Ramich
- Research Group Molecular Nutritional Medicine and Department of Human Nutrition, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
- University of Lübeck, Lübeck, Germany
- Department of Endocrinology and Metabolism, Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, and Humboldt-Universität zu Berlin, Berlin, Germany
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Eberli NS, Colas L, Gimalac A. Chrononutrition in traditional European medicine-Ideal meal timing for cardiometabolic health promotion. JOURNAL OF INTEGRATIVE MEDICINE 2024; 22:115-125. [PMID: 38472010 DOI: 10.1016/j.joim.2024.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 02/01/2024] [Indexed: 03/14/2024]
Abstract
Meal timing plays a crucial role for cardiometabolic health, given the circadian regulation of cardiometabolic function. However, to the best of our knowledge, no concept of meal timing exists in traditional European medicine (TEM). Therefore, in this narrative review, we aim to define the optimal time slot for energy intake and optimal energy distribution throughout the day in a context of TEM and explore further implications. By reviewing literature published between 2002 and 2022, we found that optimal timing for energy intake may be between 06:00 and 09:00, 12:00 and 14:00, and between 15:00 and 18:00, with high energy breakfast, medium energy lunch and low energy dinner and possibly further adjustments according to one's chronotype and genetics. Also, timing and distribution of energy intake may serve as a novel therapeutic strategy to optimize coction, a concept describing digestion and metabolism in TEM. Please cite this article as: Eberli NS, Colas L, Gimalac A. Chrononutrition in traditional European medicine-Ideal meal timing for cardiometabolic health promotion. J Integr Med. 2024; 22(2);115-125.
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Affiliation(s)
- Nora Selena Eberli
- Department of Traditional European Medicine, Navi Institute of Research in Integrative Health, Ecole Professionnelle Supérieure de Naturopathie, Centre André Henzelin, 1066 Epalinges, Switzerland.
| | - Ludivine Colas
- Department of Traditional European Medicine, Navi Institute of Research in Integrative Health, Ecole Professionnelle Supérieure de Naturopathie, Centre André Henzelin, 1066 Epalinges, Switzerland
| | - Anne Gimalac
- Department of Traditional European Medicine, Navi Institute of Research in Integrative Health, Ecole Professionnelle Supérieure de Naturopathie, Centre André Henzelin, 1066 Epalinges, Switzerland
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3
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BaHammam AS, Pirzada A. Timing Matters: The Interplay between Early Mealtime, Circadian Rhythms, Gene Expression, Circadian Hormones, and Metabolism-A Narrative Review. Clocks Sleep 2023; 5:507-535. [PMID: 37754352 PMCID: PMC10528427 DOI: 10.3390/clockssleep5030034] [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: 06/26/2023] [Revised: 07/24/2023] [Accepted: 09/04/2023] [Indexed: 09/28/2023] Open
Abstract
Achieving synchronization between the central and peripheral body clocks is essential for ensuring optimal metabolic function. Meal timing is an emerging field of research that investigates the influence of eating patterns on our circadian rhythm, metabolism, and overall health. This narrative review examines the relationship between meal timing, circadian rhythm, clock genes, circadian hormones, and metabolic function. It analyzes the existing literature and experimental data to explore the connection between mealtime, circadian rhythms, and metabolic processes. The available evidence highlights the importance of aligning mealtime with the body's natural rhythms to promote metabolic health and prevent metabolic disorders. Specifically, studies show that consuming meals later in the day is associated with an elevated prevalence of metabolic disorders, while early time-restricted eating, such as having an early breakfast and an earlier dinner, improves levels of glucose in the blood and substrate oxidation. Circadian hormones, including cortisol and melatonin, interact with mealtimes and play vital roles in regulating metabolic processes. Cortisol, aligned with dawn in diurnal mammals, activates energy reserves, stimulates appetite, influences clock gene expression, and synchronizes peripheral clocks. Consuming meals during periods of elevated melatonin levels, specifically during the circadian night, has been correlated with potential implications for glucose tolerance. Understanding the mechanisms of central and peripheral clock synchronization, including genetics, interactions with chronotype, sleep duration, and hormonal changes, provides valuable insights for optimizing dietary strategies and timing. This knowledge contributes to improved overall health and well-being by aligning mealtime with the body's natural circadian rhythm.
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Affiliation(s)
- Ahmed S. BaHammam
- The University Sleep Disorders Center, Department of Medicine, College of Medicine, King Saud University, Riyadh 11324, Saudi Arabia
| | - Abdulrouf Pirzada
- North Cumbria Integrated Care (NCIC), National Health Service (NHS), Carlisle CA2 7HY, UK;
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Codoñer-Franch P, Gombert M, Martínez-Raga J, Cenit MC. Circadian Disruption and Mental Health: The Chronotherapeutic Potential of Microbiome-Based and Dietary Strategies. Int J Mol Sci 2023; 24:ijms24087579. [PMID: 37108739 PMCID: PMC10146651 DOI: 10.3390/ijms24087579] [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: 03/24/2023] [Revised: 04/13/2023] [Accepted: 04/17/2023] [Indexed: 04/29/2023] Open
Abstract
Mental illness is alarmingly on the rise, and circadian disruptions linked to a modern lifestyle may largely explain this trend. Impaired circadian rhythms are associated with mental disorders. The evening chronotype, which is linked to circadian misalignment, is a risk factor for severe psychiatric symptoms and psychiatric metabolic comorbidities. Resynchronization of circadian rhythms commonly improves psychiatric symptoms. Furthermore, evidence indicates that preventing circadian misalignment may help reduce the risk of psychiatric disorders and the impact of neuro-immuno-metabolic disturbances in psychiatry. The gut microbiota exhibits diurnal rhythmicity, as largely governed by meal timing, which regulates the host's circadian rhythms. Temporal circadian regulation of feeding has emerged as a promising chronotherapeutic strategy to prevent and/or help with the treatment of mental illnesses, largely through the modulation of gut microbiota. Here, we provide an overview of the link between circadian disruption and mental illness. We summarize the connection between gut microbiota and circadian rhythms, supporting the idea that gut microbiota modulation may aid in preventing circadian misalignment and in the resynchronization of disrupted circadian rhythms. We describe diurnal microbiome rhythmicity and its related factors, highlighting the role of meal timing. Lastly, we emphasize the necessity and rationale for further research to develop effective and safe microbiome and dietary strategies based on chrononutrition to combat mental illness.
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Affiliation(s)
- Pilar Codoñer-Franch
- Department of Pediatrics, Obstetrics and Gynecology, University of Valencia, 46010 Valencia, Spain
- Department of Pediatrics, University Hospital Doctor Peset, Foundation for the Promotion of Health and Bio-Medical Research in the Valencian Region (FISABIO), 46017 Valencia, Spain
| | - Marie Gombert
- Biosciences Division, Center for Health Sciences, SRI International, Menlo Park, CA 94025, USA
| | - José Martínez-Raga
- Department of Psychiatry and Clinical Psychology, Hospital Universitario Doctor Peset, University of Valencia, 46017 Valencia, Spain
| | - María Carmen Cenit
- Microbial Ecology, Nutrition & Health Research Unit, Institute of Agrochemistry and Food Technology, National Research Council (IATA-CSIC), 46980 Valencia, Spain
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Proctor DM, Drummond RA, Lionakis MS, Segre JA. One population, multiple lifestyles: Commensalism and pathogenesis in the human mycobiome. Cell Host Microbe 2023; 31:539-553. [PMID: 37054674 PMCID: PMC10155287 DOI: 10.1016/j.chom.2023.02.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 02/12/2023] [Accepted: 02/23/2023] [Indexed: 04/15/2023]
Abstract
Candida auris and Candida albicans can result in invasive fungal diseases. And yet, these species can stably and asymptomatically colonize human skin and gastrointestinal tracts. To consider these disparate microbial lifestyles, we first review factors shown to influence the underlying microbiome. Structured by the damage response framework, we then consider the molecular mechanisms deployed by C. albicans to switch between commensal and pathogenic lifestyles. Next, we explore this framework with C. auris to highlight how host physiology, immunity, and/or antibiotic receipt are associated with progression from colonization to infection. While treatment with antibiotics increases the risk that an individual will succumb to invasive candidiasis, the underlying mechanisms remain unclear. Here, we describe several hypotheses that may explain this phenomenon. We conclude by highlighting future directions integrating genomics with immunology to advance our understanding of invasive candidiasis and human fungal disease.
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Affiliation(s)
- Diana M Proctor
- Microbial Genomics Section, Translational and Functional Genomics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA.
| | - Rebecca A Drummond
- Institute of Immunology & Immunotherapy, Institute of Microbiology & Infection, University of Birmingham, Birmingham B15 2TT, UK
| | - Michail S Lionakis
- Fungal Pathogenesis Section, Laboratory of Clinical Immunology and Microbiology (LCIM), National Institute of Allergy & Infectious Diseases (NIAID), National Institutes of Health (NIH), Bethesda, MD 20892, USA
| | - Julia A Segre
- Microbial Genomics Section, Translational and Functional Genomics Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20892, USA
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Lujan-Barroso L, Iglesias L, Zamora-Ros R, Lasheras C, Sánchez MJ, Cabrera-Castro N, Delfrad J, Amiano P, Molina-Montes E, Colorado-Yohar S, Moreno-Iribas C, Dorronsoro A, Rodríguez-Barranco M, Chirlaque MD, Aizpurua A, Agudo A, Quirós JR, Jakszyn P. Breakfast Size and Prevalence of Metabolic Syndrome in the European Prospective Investigation into Cancer and Nutrition (EPIC) Spanish Cohort. Nutrients 2023; 15:nu15030630. [PMID: 36771336 PMCID: PMC9919450 DOI: 10.3390/nu15030630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/30/2022] [Accepted: 01/11/2023] [Indexed: 01/28/2023] Open
Abstract
BACKGROUND Recent evidence suggest that energy distribution during the daytimecould be a potential determinant for the development of metabolic syndrome (MetS). OBJECTIVE To cross-sectionally assess the association between breakfast size and the prevalence of MetS in Spanish adults. METHODS Our study included a subset of 3644 participants from the European Prospective Investigation into Cancer and Nutrition Spain study recontacted between 2017-2018. Information on diet, sociodemographic, lifestyle, sleep quality, and chronotype was collected using standardized questionnaires, while anthropometric and blood pressure data were measured in a face-to-face personal interview by a nurse. MetS was defined according to the Adult Treatment Panel III (ATPIII) definition by measuring serum levels of total cholesterol, tryglycerides and glucose. Breakfast size was calculated as: (energy from breakfast/total energy intake) * 2000 kcal. To evaluate the association between breakfast size and MetS prevalence, a multivariable logistic regression model adjusted by potential confounders was used to estimate OR and 95% CI. RESULTS Prevalence of MetS in our study was 40.7%. The mean breakfast size was 306.6 * 2000 kcal (15% of the total daily energy intake), with 14 (0.4%) participants skipping breakfast. Participants in the highest quartile of breakfast size had a lower MetS prevalence compared to participants in the lowest quartile (ORQ4vsQ1 = 0.62; 95% CI = 0.51-0.76; p-trend < 0.001). No modification of the estimated ORs by sex, breakfast time, and number of eating occasions per day were observed. CONCLUSION Our results suggest that higher breakfast size is associated with lower prevalence of MetS in Spanish adults, supporting the importance of a high energy breakfast. Further prospective studies are necessary to confirm these findings.
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Affiliation(s)
- Leila Lujan-Barroso
- Unit of Nutrition and Cancer, Cancer Epidemiology Research Program, Catalan Institute of Oncology—IDIBELL, L’Hospitalet de Llobregat, 08908 Barcelona, Spain
- Department of Public Health, Mental Health and Mother-Infant Nursing, School of Nursing, Faculty of Medicine and Health Sciences, University of Barcelona, 08907 Barcelona, Spain
| | - Lucia Iglesias
- Unit of Nutrition and Cancer, Cancer Epidemiology Research Program, Catalan Institute of Oncology—IDIBELL, L’Hospitalet de Llobregat, 08908 Barcelona, Spain
| | - Raúl Zamora-Ros
- Unit of Nutrition and Cancer, Cancer Epidemiology Research Program, Catalan Institute of Oncology—IDIBELL, L’Hospitalet de Llobregat, 08908 Barcelona, Spain
| | - Cristina Lasheras
- Department of Functional Biology, University of Oviedo, 33007 Oviedo, Spain
| | - María-José Sánchez
- Escuela Andaluza de Salud Pública (EASP), 18011 Granada, Spain
- Instituto de Investigación Biosanitaria ibs.GRANADA, 18012 Granada, Spain
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), 28029 Madrid, Spain
- Department of Preventive Medicine and Public Health, University of Granada, 18071 Granada, Spain
| | - Natalia Cabrera-Castro
- Department of Epidemiology, Murcia Regional Health Council, IMIB-Arrixaca, 30120 Murcia, Spain
| | - Josu Delfrad
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), 28029 Madrid, Spain
- Navarra Public Health Institute, 31003 Pamplona, Spain
- Navarra Institute for Health Research (IdiSNA), 31008 Pamplona, Spain
| | - Pilar Amiano
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), 28029 Madrid, Spain
- Sub-Directorate for Public Health and Addictions of Gipuzkoa, 20010 Donostia, Spain
- Biodonostia Health Research Institute, Epidemiology of Chronic and Communicable Diseases Group, 20014 San Sebastián, Spain
| | - Esther Molina-Montes
- Instituto de Investigación Biosanitaria ibs.GRANADA, 18012 Granada, Spain
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), 28029 Madrid, Spain
- Department of Nutrition and Food Science, Campus of Cartuja, University of Granada, 18071 Granada, Spain
- Institute of Nutrition and Food Technology (INYTA) ‘José Mataix’, Biomedical Research Centre, University of Granada, 18071 Granada, Spain
| | - Sandra Colorado-Yohar
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), 28029 Madrid, Spain
- Department of Epidemiology, Murcia Regional Health Council, IMIB-Arrixaca, 30120 Murcia, Spain
- Research Group on Demography and Health, National Faculty of Public Health, University of Antioquia, Medellín 050010, Colombia
| | - Conchi Moreno-Iribas
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), 28029 Madrid, Spain
- Navarra Public Health Institute, 31003 Pamplona, Spain
- Navarra Institute for Health Research (IdiSNA), 31008 Pamplona, Spain
| | - Ane Dorronsoro
- Sub-Directorate for Public Health and Addictions of Gipuzkoa, 20010 Donostia, Spain
| | - Miguel Rodríguez-Barranco
- Escuela Andaluza de Salud Pública (EASP), 18011 Granada, Spain
- Instituto de Investigación Biosanitaria ibs.GRANADA, 18012 Granada, Spain
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), 28029 Madrid, Spain
| | - María Dolores Chirlaque
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública (CIBERESP), 28029 Madrid, Spain
- Department of Epidemiology, Murcia Regional Health Council, IMIB-Arrixaca, 30120 Murcia, Spain
- Sociohealth Sciences Department, Murcia University, 30100 Murcia, Spain
| | - Amaia Aizpurua
- Sub-Directorate for Public Health and Addictions of Gipuzkoa, 20010 Donostia, Spain
- Biodonostia Health Research Institute, Epidemiology of Chronic and Communicable Diseases Group, 20014 San Sebastián, Spain
| | - Antonio Agudo
- Unit of Nutrition and Cancer, Cancer Epidemiology Research Program, Catalan Institute of Oncology—IDIBELL, L’Hospitalet de Llobregat, 08908 Barcelona, Spain
| | - José Ramón Quirós
- Department of Functional Biology, University of Oviedo, 33007 Oviedo, Spain
| | - Paula Jakszyn
- Unit of Nutrition and Cancer, Cancer Epidemiology Research Program, Catalan Institute of Oncology—IDIBELL, L’Hospitalet de Llobregat, 08908 Barcelona, Spain
- Blanquerna Health Sciences Faculty, Ramon Llull University, 08022 Barcelona, Spain
- Correspondence:
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Lesani A, Barkhidarian B, Jafarzadeh M, Akbarzade Z, Djafarian K, Shab-Bidar S. Time-related meal patterns and breakfast quality in a sample of Iranian adults. BMC Nutr 2023; 9:13. [PMID: 36647126 PMCID: PMC9841660 DOI: 10.1186/s40795-022-00666-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 12/28/2022] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Some evidence shows that meal timing is associated with diet quality. We aimed to investigate the relationship between meal timing and breakfast quality in a sample of Iranian adults. METHODS This cross-sectional study was conducted on 850 men and women living in Tehran, Iran. Dietary data was recorded by three non-consecutive 24-h dietary recalls. The Breakfast Quality Index (BQI) was calculated. Time-related meal patterns included the interval between the first and last meal (eating and fasting window), frequency of meals, length of sleep, and time of first and last eating occasion. The multiple linear regression analysis was used to identify the relationships between time-related meal patterns and BQI. RESULTS The mean (95% CI) of BQI was 4.52 (4.45-4.65) and the maximum was 8. Bread, cheese, vegetables, fruits, energy, and carbohydrate intake showed positive associations with BQI scores. Longer fasting time showed a positive association with fruits (β (CI 95%)) (0.11 (0.0003-0.005), and vegetable consumption (0.12 (0.009-0.07)) and BQI score (0.39 (0.001-0.06)). Time of first eating occasions indicated a negative association with protein and fat intake and BQI score. Time of last eating occasions showed a positive association with vegetables consumption and BQI score. The longer length of sleep was associated with a higher BQI score. The frequency of meals was significantly and positively related to energy and macronutrients intake and BQI. CONCLUSION Earlier first and last meal, longer sleep length, longer fasting window, and a greater meal frequency were associated with a better breakfast quality.
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Affiliation(s)
- Azadeh Lesani
- grid.411705.60000 0001 0166 0922Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Bahareh Barkhidarian
- grid.411705.60000 0001 0166 0922Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehrzad Jafarzadeh
- grid.411746.10000 0004 4911 7066Endocrine Research Center, Institute of Endocrinology and Metabolism, Iran University of Medical Science, Tehran, Iran
| | - Zahra Akbarzade
- grid.411705.60000 0001 0166 0922Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Kurosh Djafarian
- grid.411705.60000 0001 0166 0922Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Sakineh Shab-Bidar
- grid.411705.60000 0001 0166 0922Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
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Hartman TJ, Masters M, Flanders WD, Wang Y, Li M, Mitchell DC, Guinter M, Patel AV, McCullough ML. Self-Reported Eating-Occasion Frequency and Timing are Reproducible and Relatively Valid in the American Cancer Society Cancer Prevention Study-3 Diet Assessment Substudy. J Nutr 2023; 152:2827-2836. [PMID: 36055776 DOI: 10.1093/jn/nxac206] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 08/12/2022] [Accepted: 08/29/2022] [Indexed: 02/02/2023] Open
Abstract
BACKGROUND Accurate assessment of eating-occasion behaviors, such as timing, frequency, and consumption intervals, is important for evaluating associations with obesity and other chronic diseases. OBJECTIVES The main objective of this study was to assess the relative validity of a 24-hour grid approach to assess eating-occasion timing and frequency in comparison to data derived from repeated 24-hour dietary recalls (DRs). A second objective was to assess the 1-year test-retest reproducibility of the 24-hour grid. METHODS Between 2015 and 2016, 626 participants in the Cancer Prevention Study-3 (CPS-3) Diet Assessment Substudy (mean age, 52 years; age range, 31-70 years; 64% female; 64% non-Hispanic white, 22% non-Hispanic black, 14% Hispanic) completed 2 grids and up to 6 unannounced, telephone, interviewer-administered DRs over 1 year. Spearman correlations (ρ; 95% CIs) were calculated to assess reproducibility between the repeated eating-occasion grid-derived variables (e.g., numbers of snacks and meals per day, timing of eating occasions) and to assess relative validity by comparing the meal grid and DR-derived summary data separately for weekdays and weekend days. RESULTS Reproducibility correlations for eating-occasion variables derived from the eating-occasion grids completed 1 year apart were ≥0.5 for the majority of variables analyzed for both weekdays and weekend days, including numbers of snacks and meals per day and timing of the first and last eating occasions of the day. Relative validity was highest among weekday variables and was ≥0.5 for the majority of variables, with correlations ranging from ρ values of 0.32 (number of meals per day) to 0.68 (hour of the first eating occasion). CONCLUSIONS These findings suggest the eating-occasion grid used in CPS-3 has good reproducibility over 1 year and yields estimates comparable to those from a more detailed method of assessment of eating timing and frequency.
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Affiliation(s)
- Terryl J Hartman
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA.,Winship Cancer Institute, Emory University, Atlanta, GA, USA
| | - Matthew Masters
- Behavioral and Epidemiology Research Program, American Cancer Society, Kennesaw, GA, USA
| | - W Dana Flanders
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA.,Winship Cancer Institute, Emory University, Atlanta, GA, USA
| | - Ying Wang
- Behavioral and Epidemiology Research Program, American Cancer Society, Kennesaw, GA, USA
| | - Mengyi Li
- Department of Epidemiology, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Diane C Mitchell
- Diet Assessment Center, Department of Nutritional Sciences, Pennsylvania State University, University Park, PA, USA
| | - Mark Guinter
- Behavioral and Epidemiology Research Program, American Cancer Society, Kennesaw, GA, USA
| | - Alpa V Patel
- Behavioral and Epidemiology Research Program, American Cancer Society, Kennesaw, GA, USA
| | - Marjorie L McCullough
- Behavioral and Epidemiology Research Program, American Cancer Society, Kennesaw, GA, USA
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van der Merwe C, Münch M, Kruger R. Chronotype Differences in Body Composition, Dietary Intake and Eating Behavior Outcomes: A Scoping Systematic Review. Adv Nutr 2022; 13:2357-2405. [PMID: 36041181 PMCID: PMC9776742 DOI: 10.1093/advances/nmac093] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 03/03/2022] [Accepted: 08/23/2022] [Indexed: 01/29/2023] Open
Abstract
The timing and nutritional composition of food intake are important zeitgebers for the biological clocks in humans. Thus, eating at an inappropriate time (e.g., during the night) may have a desynchronizing effect on the biological clocks and, in the long term, may result in adverse health outcomes (e.g., weight gain, obesity, and poor metabolic function). Being a very late or early chronotype not only determines preferred sleep and wake times but may also influence subsequent mealtimes, which may affect the circadian timing system. In recent years, an increased number of studies have examined the relation between chronotype and health outcomes, with a main focus on absolute food intake and metabolic markers and, to a lesser extent, on dietary intake distribution and eating behavior. Therefore, this review aimed to systematically determine whether chronotype indirectly affects eating behaviors, dietary intake (timing, choice, nutrients), and biomarkers leading to body composition outcomes in healthy adults. A systematic literature search on electronic databases (PubMed, CINAHL, MEDLINE, SCOPUS, Cochrane library) was performed (International Prospective Register of Systematic Reviews number: CRD42020219754). Only studies that included healthy adults (aged >18 y), classified according to chronotype and body composition profiles, using outcomes of dietary intake, eating behavior, and/or biomarkers, were considered. Of 4404 articles, 24 met the inclusion criteria. The results revealed that late [evening type (ET)] compared with early [morning type (MT)] chronotypes were more likely to be overweight/obese with poorer metabolic health. Both MT and ET had similar energy and macronutrient intakes, consuming food during their preferred sleep-wake timing: later for ET than MT. Most of the energy and macronutrient intakes were distributed toward nighttime for ET and exacerbated by unhealthy eating behaviors and unfavorable dietary intakes. These findings from our systematic review give further insight why higher rates of overweight/obesity and unhealthier metabolic biomarkers are more likely to occur in ET.
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Affiliation(s)
- Carlien van der Merwe
- School of Sport, Exercise and Nutrition, Massey University East Precinct, Albany, Auckland, New Zealand
| | - Mirjam Münch
- Centre for Chronobiology, Transfaculty Research Platform Molecular and Cognitive Neurosciences, Psychiatric Hospital of the University of Basel, Basel, Switzerland
- Research Centre for Hauora and Health, Massey University, Wellington, New Zealand
| | - Rozanne Kruger
- School of Sport, Exercise and Nutrition, Massey University East Precinct, Albany, Auckland, New Zealand
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Papagerakis S, Said R, Ketabat F, Mahmood R, Pundir M, Lobanova L, Guenther G, Pannone G, Lavender K, McAlpin BR, Moreau A, Chen X, Papagerakis P. When the clock ticks wrong with COVID-19. Clin Transl Med 2022; 12:e949. [PMID: 36394205 PMCID: PMC9670202 DOI: 10.1002/ctm2.949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 06/06/2022] [Accepted: 06/11/2022] [Indexed: 11/18/2022] Open
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a member of the coronavirus family that causes the novel coronavirus disease first diagnosed in 2019 (COVID-19). Although many studies have been carried out in recent months to determine why the disease clinical presentations and outcomes can vary significantly from asymptomatic to severe or lethal, the underlying mechanisms are not fully understood. It is likely that unique individual characteristics can strongly influence the broad disease variability; thus, tailored diagnostic and therapeutic approaches are needed to improve clinical outcomes. The circadian clock is a critical regulatory mechanism orchestrating major physiological and pathological processes. It is generally accepted that more than half of the cell-specific genes in any given organ are under circadian control. Although it is known that a specific role of the circadian clock is to coordinate the immune system's steady-state function and response to infectious threats, the links between the circadian clock and SARS-CoV-2 infection are only now emerging. How inter-individual variability of the circadian profile and its dysregulation may play a role in the differences noted in the COVID-19-related disease presentations, and outcome remains largely underinvestigated. This review summarizes the current evidence on the potential links between circadian clock dysregulation and SARS-CoV-2 infection susceptibility, disease presentation and progression, and clinical outcomes. Further research in this area may contribute towards novel circadian-centred prognostic, diagnostic and therapeutic approaches for COVID-19 in the era of precision health.
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Affiliation(s)
- Silvana Papagerakis
- Laboratory of Oral, Head and Neck Cancer – Personalized Diagnostics and Therapeutics, College of MedicineUniversity of SaskatchewanSaskatoonSaskatchewanCanada,Department of Surgery, College of MedicineUniversity of SaskatchewanSaskatoonSaskatchewanCanada,Division of Biomedical EngineeringUniversity of SaskatchewanSaskatoonSaskatchewanCanada,Department of Biochemistry, Microbiology and Immunology, College of MedicineUniversity of SaskatchewanSaskatoonSaskatchewanCanada,Department of Otolaryngology – Head and Neck Surgery, Medical SchoolThe University of MichiganAnn ArborMichiganUSA
| | - Raed Said
- Laboratory of Oral, Head and Neck Cancer – Personalized Diagnostics and Therapeutics, College of MedicineUniversity of SaskatchewanSaskatoonSaskatchewanCanada,Department of Surgery, College of MedicineUniversity of SaskatchewanSaskatoonSaskatchewanCanada,Laboratory of Precision Oral Health and Chronobiology, College of DentistryUniversity of SaskatchewanSaskatoonSaskatchewanCanada,Department of Anatomy, Physiology and Pharmacology, College of MedicineUniversity of SaskatchewanSaskatoonSaskatchewanCanada
| | - Farinaz Ketabat
- Laboratory of Oral, Head and Neck Cancer – Personalized Diagnostics and Therapeutics, College of MedicineUniversity of SaskatchewanSaskatoonSaskatchewanCanada,Division of Biomedical EngineeringUniversity of SaskatchewanSaskatoonSaskatchewanCanada
| | - Razi Mahmood
- Laboratory of Oral, Head and Neck Cancer – Personalized Diagnostics and Therapeutics, College of MedicineUniversity of SaskatchewanSaskatoonSaskatchewanCanada,Department of Surgery, College of MedicineUniversity of SaskatchewanSaskatoonSaskatchewanCanada,Laboratory of Precision Oral Health and Chronobiology, College of DentistryUniversity of SaskatchewanSaskatoonSaskatchewanCanada
| | - Meenakshi Pundir
- Laboratory of Oral, Head and Neck Cancer – Personalized Diagnostics and Therapeutics, College of MedicineUniversity of SaskatchewanSaskatoonSaskatchewanCanada,Division of Biomedical EngineeringUniversity of SaskatchewanSaskatoonSaskatchewanCanada,Laboratory of Precision Oral Health and Chronobiology, College of DentistryUniversity of SaskatchewanSaskatoonSaskatchewanCanada
| | - Liubov Lobanova
- Laboratory of Precision Oral Health and Chronobiology, College of DentistryUniversity of SaskatchewanSaskatoonSaskatchewanCanada
| | - Greg Guenther
- Laboratory of Oral, Head and Neck Cancer – Personalized Diagnostics and Therapeutics, College of MedicineUniversity of SaskatchewanSaskatoonSaskatchewanCanada
| | - Giuseppe Pannone
- Anatomic Pathology Unit, Department of Clinic and Experimental MedicineUniversity of FoggiaFoggiaItaly
| | - Kerry Lavender
- Department of Biochemistry, Microbiology and Immunology, College of MedicineUniversity of SaskatchewanSaskatoonSaskatchewanCanada
| | - Blake R. McAlpin
- Laboratories of Neuroimmunology, Department of Symptom Research, Division of Internal MedicineThe University of Texas MD Anderson Cancer CenterHoustonTexasUSA
| | - Alain Moreau
- Viscogliosi Laboratory in Molecular Genetics of Musculoskeletal DiseasesCentre Hospitalier Universitaire (CHU) Sainte‐Justine Research CenterMontrealQuebecCanada,Department of Stomatology, Faculty of Dentistry and Department of Biochemistry and Molecular Medicine, Faculty of MedicineUniversité de MontréalMontrealQuebecCanada
| | - Xiongbiao Chen
- Division of Biomedical EngineeringUniversity of SaskatchewanSaskatoonSaskatchewanCanada,Department of Mechanical Engineering, School of EngineeringUniversity of SaskatchewanSaskatoonSaskatchewanCanada
| | - Petros Papagerakis
- Division of Biomedical EngineeringUniversity of SaskatchewanSaskatoonSaskatchewanCanada,Laboratory of Precision Oral Health and Chronobiology, College of DentistryUniversity of SaskatchewanSaskatoonSaskatchewanCanada
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11
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Jian Z, Zeng L, Xu T, Sun S, Yan S, Zhao S, Su Z, Ge C, Zhang Y, Jia J, Dou T. The intestinal microbiome associated with lipid metabolism and obesity in humans and animals. J Appl Microbiol 2022; 133:2915-2930. [PMID: 35882518 DOI: 10.1111/jam.15740] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 07/05/2022] [Accepted: 07/23/2022] [Indexed: 01/07/2023]
Abstract
Intestinal microbiota is considered to play an integral role in maintaining health of host by modulating several physiological functions including nutrition, metabolism and immunity. Accumulated data from human and animal studies indicate that intestinal microbes can affect lipid metabolism in host through various direct and indirect biological mechanisms. These mechanisms include the production of various signalling molecules by the intestinal microbiome, which exert a strong effect on lipid metabolism, bile secretion in the liver, reverse transport of cholesterol and energy expenditure and insulin sensitivity in peripheral tissues. This review discusses the findings of recent studies suggesting an emerging role of intestinal microbiota and its metabolites in regulating lipid metabolism and the association of intestinal microbiota with obesity. Additionally, we discuss the controversies and challenges in this research area. However, intestinal micro-organisms are also affected by some external factors, which in turn influence the regulation of microbial lipid metabolism. Therefore, we also discuss the effects of probiotics, prebiotics, diet structure, exercise and other factors on intestinal microbiological changes and lipid metabolism regulation.
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Affiliation(s)
- Zonghui Jian
- Yunnan Provincial Key Laboratory of Animal Nutrition and Feed, Yunnan Agricultural University, Kunming, People's Republic of China
| | - Li Zeng
- The Chenggong Department, Kunming Medical University Affiliated Stomatological Hospital, Kunming, People's Republic of China.,Yunnan Key Laboratory of Stomatology, Kunming, People's Republic of China
| | - Taojie Xu
- Yunnan Provincial Key Laboratory of Animal Nutrition and Feed, Yunnan Agricultural University, Kunming, People's Republic of China
| | - Shuai Sun
- Yunnan Provincial Key Laboratory of Animal Nutrition and Feed, Yunnan Agricultural University, Kunming, People's Republic of China
| | - Shixiong Yan
- Yunnan Provincial Key Laboratory of Animal Nutrition and Feed, Yunnan Agricultural University, Kunming, People's Republic of China
| | - Sumei Zhao
- Yunnan Provincial Key Laboratory of Animal Nutrition and Feed, Yunnan Agricultural University, Kunming, People's Republic of China
| | - Zhengchang Su
- Department of Bioinformatics and Genomics, College of Computing and Informatics, The University of North Carolina at Charlotte, Charlotte, North Carolina, USA
| | - Changrong Ge
- Yunnan Provincial Key Laboratory of Animal Nutrition and Feed, Yunnan Agricultural University, Kunming, People's Republic of China
| | - Yunmei Zhang
- Department of Cardiovascular, The First People's Hospital of Yunnan Province, The Affiliated Hospital of Kunming University of Science and Technology, Kunming, People's Republic of China
| | - Junjing Jia
- Yunnan Provincial Key Laboratory of Animal Nutrition and Feed, Yunnan Agricultural University, Kunming, People's Republic of China
| | - Tengfei Dou
- Yunnan Provincial Key Laboratory of Animal Nutrition and Feed, Yunnan Agricultural University, Kunming, People's Republic of China
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12
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Petersen MC, Gallop MR, Flores Ramos S, Zarrinpar A, Broussard JL, Chondronikola M, Chaix A, Klein S. Complex physiology and clinical implications of time-restricted eating. Physiol Rev 2022; 102:1991-2034. [PMID: 35834774 PMCID: PMC9423781 DOI: 10.1152/physrev.00006.2022] [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: 02/01/2022] [Revised: 06/16/2022] [Accepted: 07/07/2022] [Indexed: 11/22/2022] Open
Abstract
Time-restricted eating (TRE) is a dietary intervention that limits food consumption to a specific time window each day. The effect of TRE on body weight and physiological functions has been extensively studied in rodent models, which have shown considerable therapeutic effects of TRE and important interactions among time of eating, circadian biology, and metabolic homeostasis. In contrast, it is difficult to make firm conclusions regarding the effect of TRE in people because of the heterogeneity in results, TRE regimens, and study populations. In this review, we 1) provide a background of the history of meal consumption in people and the normal physiology of eating and fasting; 2) discuss the interaction between circadian molecular metabolism and TRE; 3) integrate the results of preclinical and clinical studies that evaluated the effects of TRE on body weight and physiological functions; 4) summarize other time-related dietary interventions that have been studied in people; and 4) identify current gaps in knowledge and provide a framework for future research directions.
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Affiliation(s)
- Max C Petersen
- Center for Human Nutrition, Washington University School of Medicine, St. Louis, Missouri
- Division of Endocrinology, Metabolism, and Lipid Research, Washington University School of Medicine, St. Louis, Missouri
| | - Molly R Gallop
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, Utah
| | - Stephany Flores Ramos
- Division of Gastroenterology, University of California, San Diego, La Jolla, California
| | - Amir Zarrinpar
- Division of Gastroenterology, University of California, San Diego, La Jolla, California
- Department of Veterans Affairs San Diego Health System, La Jolla, California
| | - Josiane L Broussard
- Division of Endocrinology, Metabolism, and Diabetes, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, Colorado
- Department of Health and Exercise Science, Colorado State University, Fort Collins, Colorado
| | - Maria Chondronikola
- Departments of Nutrition and Radiology, University of California, Davis, California
- Departments of Nutrition and Dietetics, Harokopio University of Athens, Kallithea, Greece
| | - Amandine Chaix
- Department of Nutrition and Integrative Physiology, University of Utah, Salt Lake City, Utah
| | - Samuel Klein
- Center for Human Nutrition, Washington University School of Medicine, St. Louis, Missouri
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13
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Lu X, Fan Z, Liu A, Liu R, Lou X, Hu J. Extended Inter-Meal Interval Negatively Impacted the Glycemic and Insulinemic Responses after Both Lunch and Dinner in Healthy Subjects. Nutrients 2022; 14:nu14173617. [PMID: 36079874 PMCID: PMC9460893 DOI: 10.3390/nu14173617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/26/2022] [Accepted: 08/29/2022] [Indexed: 11/16/2022] Open
Abstract
This study aimed to investigate the glycemic and insulinemic effects of lunch timing based on a fixed feeding window, and the effects of apple preload on postprandial glucose and insulin responses after nutrient-balanced lunch and the subsequent high-fat dinner in healthy participants. Twenty-six participants completed four randomized, crossover experimental trials: (1) early standardized lunch at 12:00 (12S); (2) apple preload to 12S (12A+S); (3) late standardized lunch at 14:00 (14S); and (4) apple preload to 14S (14A+S); wherein twenty participants’ blood samples were collected for insulin analysis following the lunch trails. In each experimental trial, each participant equipped with a continuous glucose monitor (CGM) was provided with a standardized breakfast and a high-fat dinner to be consumed at 8:00 and 18:00, respectively. The late lunch (14S) resulted in significantly elevated glucose peak, delayed insulin peak time, decreased insulin sensitivity, and increased insulin resistance following the lunch; also decreased glycemic response following the subsequent dinner and larger blood glucose fluctuation over the 24-h period compared with the 12S. The 14A+S significantly reduced the glucose peak, the insulin peak time and the glycemic variability following the lunch, also the 24-h glycemic variability compared with the 14S. The insulin sensitivity was significantly improved in the 12A+S, compared with that of the 12S. In conclusion, the present study found that an extra 2-h inter-meal fasting before and after lunch resulted in elevated glycemic response in both macronutrient-balanced meal and high-fat meal in healthy subjects. The negative impact of a late lunch could be partly reversed by the apple preload, without a trade-off of insulin secretion.
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Affiliation(s)
- Xuejiao Lu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Zhihong Fan
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing 100083, China
- Correspondence: ; Tel.: +86-10-62737717
| | - Anshu Liu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Rui Liu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Xinling Lou
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
| | - Jiahui Hu
- College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
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14
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Eating architecture in adults at increased risk of type 2 diabetes: associations with body fat and glycaemic control. Br J Nutr 2022; 128:324-333. [PMID: 34348822 DOI: 10.1017/s0007114521002944] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Eating architecture is a term that describes meal frequency, meal timing and meal size and the daily variation in each of these. The aim of this study was to determine the relationship between components of eating architecture on body fat and markers of glycaemic control in healthy adults at increased risk of type 2 diabetes (T2DM). Participants (n 73, 39 males, age 58·8 (8·1) years, BMI 33·4 (4·4) kg/m2) recorded food intake and wore accelerometers and continuous glucose monitors (CGM) for 7-14 d under free-living conditions. Body fat and glycated Hb (HbA1c) were also measured. The mean and day-to-day variation (calculated as the standard deviation during the monitoring period) of each component of eating architecture were calculated. Multivariable linear regression models were constructed for three separate outcome variables (body fat mass, mean CGM glucose and HbA1c) for each component of eating architecture before and after adjustment for confounders. Higher variability in the time of first meal consumption was associated with increased body fat mass after adjusting for confounders (β = 0·227, 95 % CI: 0·019, 0·434, P = 0·033). Increased variability in the time lag from waking to first meal consumption was also positively associated with increased HbA1c after adjustment (β = 0·285, 95 % CI: 0·040, 0·530, P = 0·023). Low day-to-day variability in first meal consumption was associated with lower body fat and improved glucose control in adults at increased risk of T2DM. Routine consumption of meals may optimise temporal regulation to anticipate and respond appropriately to a glucose challenge.
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15
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Mattes RD, Rowe SB, Ohlhorst SD, Brown AW, Hoffman DJ, Liska DJ, Feskens EJM, Dhillon J, Tucker KL, Epstein LH, Neufeld LM, Kelley M, Fukagawa NK, Sunde RA, Zeisel SH, Basile AJ, Borth LE, Jackson E. Valuing the Diversity of Research Methods to Advance Nutrition Science. Adv Nutr 2022; 13:1324-1393. [PMID: 35802522 PMCID: PMC9340992 DOI: 10.1093/advances/nmac043] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 04/08/2022] [Indexed: 12/13/2022] Open
Abstract
The ASN Board of Directors appointed the Nutrition Research Task Force to develop a report on scientific methods used in nutrition science to advance discovery, interpretation, and application of knowledge in the field. The genesis of this report was growing concern about the tone of discourse among nutrition professionals and the implications of acrimony on the productive study and translation of nutrition science. Too often, honest differences of opinion are cast as conflicts instead of areas of needed collaboration. Recognition of the value (and limitations) of contributions from well-executed nutrition science derived from the various approaches used in the discipline, as well as appreciation of how their layering will yield the strongest evidence base, will provide a basis for greater productivity and impact. Greater collaborative efforts within the field of nutrition science will require an understanding that each method or approach has a place and function that should be valued and used together to create the nutrition evidence base. Precision nutrition was identified as an important emerging nutrition topic by the preponderance of task force members, and this theme was adopted for the report because it lent itself to integration of many approaches in nutrition science. Although the primary audience for this report is nutrition researchers and other nutrition professionals, a secondary aim is to develop a document useful for the various audiences that translate nutrition research, including journalists, clinicians, and policymakers. The intent is to promote accurate, transparent, verifiable evidence-based communication about nutrition science. This will facilitate reasoned interpretation and application of emerging findings and, thereby, improve understanding and trust in nutrition science and appropriate characterization, development, and adoption of recommendations.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Leonard H Epstein
- University at Buffalo Jacobs School of Medicine and Biomedical Sciences, Buffalo, NY, USA
| | | | - Michael Kelley
- Michael Kelley Nutrition Science Consulting, Wauwatosa, WI, USA
| | - Naomi K Fukagawa
- USDA Beltsville Human Nutrition Research Center, Beltsville, MD, USA
| | | | - Steven H Zeisel
- University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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16
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Candidate Phyla Radiation, an Underappreciated Division of the Human Microbiome, and Its Impact on Health and Disease. Clin Microbiol Rev 2022; 35:e0014021. [PMID: 35658516 DOI: 10.1128/cmr.00140-21] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Candidate phyla radiation (CPR) is an emerging division of the bacterial domain within the human microbiota. Still poorly known, these microorganisms were first described in the environment in 1981 as "ultramicrobacteria" with a cell volume under 0.1 μm3 and were first associated with the human oral microbiota in 2007. The evolution of technology has been paramount for the study of CPR within the human microbiota. In fact, since these ultramicrobacteria have yet to be axenically cultured despite ongoing efforts, progress in imaging technology has allowed their observation and morphological description. Although their genomic abilities and taxonomy are still being studied, great strides have been made regarding their taxonomic classification, as well as their lifestyle. In addition, advancements in next-generation sequencing and the continued development of bioinformatics tools have allowed their detection as commensals in different human habitats, including the oral cavity and gastrointestinal and genital tracts, thus highlighting CPR as a nonnegligible part of the human microbiota with an impact on physiological settings. Conversely, several pathologies present dysbiosis affecting CPR levels, including inflammatory, mucosal, and infectious diseases. In this exhaustive review of the literature, we provide a historical perspective on the study of CPR, an overview of the methods available to study these organisms and a description of their taxonomy and lifestyle. In addition, their distribution in the human microbiome is presented in both homeostatic and dysbiotic settings. Future efforts should focus on developing cocultures and, if possible, axenic cultures to obtain isolates and therefore genomes that would provide a better understanding of these ultramicrobacteria, the importance of which in the human microbiome is undeniable.
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17
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Ratiner K, Shapiro H, Goldenberg K, Elinav E. Time-limited diets and the gut microbiota in cardiometabolic disease. J Diabetes 2022; 14:377-393. [PMID: 35698246 PMCID: PMC9366560 DOI: 10.1111/1753-0407.13288] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 05/11/2022] [Accepted: 05/26/2022] [Indexed: 12/12/2022] Open
Abstract
In recent years, intermittent fasting (IF), including periodic fasting and time-restricted feeding (TRF), has been increasingly suggested to constitute a promising treatment for cardiometabolic diseases (CMD). A deliberate daily pause in food consumption influences the gut microbiome and the host circadian clock, resulting in improved cardiometabolic health. Understanding the molecular mechanisms by which circadian host-microbiome interactions affect host metabolism and immunity may add a potentially important dimension to effective implementation of IF diets. In this review, we discuss emerging evidence potentially linking compositional and functional alterations of the gut microbiome with IF impacts on mammalian metabolism and risk of development of hypertension, type 2 diabetes (T2D), obesity, and their long-term micro- and macrovascular complications. We highlight the challenges and unknowns in causally linking diurnal bacterial signals with dietary cues and downstream metabolic consequences and means of harnessing these signals toward future microbiome integration into precision medicine.
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Affiliation(s)
- Karina Ratiner
- Systems Immunology DepartmentWeizmann Institute of ScienceRehovotIsrael
| | - Hagit Shapiro
- Systems Immunology DepartmentWeizmann Institute of ScienceRehovotIsrael
| | - Kim Goldenberg
- Systems Immunology DepartmentWeizmann Institute of ScienceRehovotIsrael
| | - Eran Elinav
- Systems Immunology DepartmentWeizmann Institute of ScienceRehovotIsrael
- Microbiome & Cancer Division, DKFZHeidelbergGermany
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18
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Garcia-Rios A, Ordovas JM. Chronodisruption and cardiovascular disease. CLINICA E INVESTIGACION EN ARTERIOSCLEROSIS : PUBLICACION OFICIAL DE LA SOCIEDAD ESPANOLA DE ARTERIOSCLEROSIS 2022; 34 Suppl 1:S32-S37. [PMID: 35125247 DOI: 10.1016/j.arteri.2021.12.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 12/28/2021] [Indexed: 06/14/2023]
Abstract
Cardiovascular disease (CVD) is an important challenge for clinicians, researchers and governments to reduce the impact on the global health burden and socioeconomic costs. Moreover, far from diminishing, cardiometabolic risk factors leading to CVD development are on the rise. In order to stop the CVD pandemic, it is not enough to merely attempt to control traditional risk factors. In this regard, chronobiology, the science that studies biological rhythms, has become an important field in research in the last years. Circadian disruption or chronodisruption, defined as a relevant disturbance of the internal temporal order of physiological circadian rhythms significantly increases the risk of CVD. In this article we review some of the evidence that has made chronobiology one of the most emerging scenarios to take into account in routine clinical practice in which a translation of all this evidence should be mandatory.
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Affiliation(s)
- Antonio Garcia-Rios
- Lipids and Atherosclerosis Unit, Maimonides Institute for Biomedical Research in Cordoba (IMIBIC), Reina Sofia University Hospital, University of Córdoba, 14004 Córdoba, Spain; CIBEROBN (CIBER in Physiopathology of Obesity and Nutrition), Instituto de Salud Carlos III, 28029 Madrid, Spain.
| | - Jose M Ordovas
- CIBEROBN (CIBER in Physiopathology of Obesity and Nutrition), Instituto de Salud Carlos III, 28029 Madrid, Spain; Nutrition and Genomics Laboratory, J.M, US Department of Agriculture Human Nutrition Research Center on Aging, Tufts University, Boston, MA, USA; Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain; IMDEA Food Institute, CEI UAM+CSIC, Madrid, Spain
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19
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Rijo-Ferreira F, Takahashi JS. Circadian rhythms in infectious diseases and symbiosis. Semin Cell Dev Biol 2022; 126:37-44. [PMID: 34625370 PMCID: PMC9183220 DOI: 10.1016/j.semcdb.2021.09.004] [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: 05/20/2021] [Revised: 09/01/2021] [Accepted: 09/07/2021] [Indexed: 10/20/2022]
Abstract
Timing is everything. Many organisms across the tree of life have evolved timekeeping mechanisms that regulate numerous of their cellular functions to optimize timing by anticipating changes in the environment. The specific environmental changes that are sensed depends on the organism. For animals, plants, and free-living microbes, environmental cues include light/dark cycles, daily temperature fluctuations, among others. In contrast, for a microbe that is never free-living, its rhythmic environment is its host's rhythmic biology. Here, we describe recent research on the interactions between hosts and microbes, from the perspective both of symbiosis as well as infections. In addition to describing the biology of the microbes, we focus specifically on how circadian clocks modulate these host-microbe interactions.
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Affiliation(s)
- Filipa Rijo-Ferreira
- Department of Neuroscience, Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX, United States.
| | - Joseph S Takahashi
- Department of Neuroscience, Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, TX, United States; Howard Hughes Medical Institute, University of Texas Southwestern Medical Center, Dallas, TX, United States.
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20
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Lommi S, Manzoor M, Engberg E, Agrawal N, Lakka TA, Leinonen J, Kolho KL, Viljakainen H. The Composition and Functional Capacities of Saliva Microbiota Differ Between Children With Low and High Sweet Treat Consumption. Front Nutr 2022; 9:864687. [PMID: 35558746 PMCID: PMC9085455 DOI: 10.3389/fnut.2022.864687] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 03/04/2022] [Indexed: 01/17/2023] Open
Abstract
Excess sugar consumption—common in youth—is associated with poor health. Evidence on the relationship between sugar consumption and the oral microbiome, however, remains scarce and inconclusive. We explored whether the diversity, composition, and functional capacities of saliva microbiota differ based on the consumption of select sugary foods and drinks (“sweet treats”). Using 16S rRNA gene sequencing, we characterized saliva microbiota from 11 to 13-year-old children who participated in the Finnish Health in Teens (Fin-HIT) cohort study. The sample comprised children in the lowest (n = 227) and highest (n = 226) tertiles of sweet treat consumption. We compared differences in the alpha diversity (Shannon, inverse Simpson, and Chao1 indices), beta diversity (principal coordinates analysis based on Bray–Curtis dissimilarity), and abundance (differentially abundant operational taxonomic units (OTUs) at the genus level) between these low and high consumption groups. We performed PICRUSt2 to predict the metabolic pathways of microbial communities. No differences emerged in the alpha diversity between low and high sweet treat consumption, whereas the beta diversity differed between groups (p = 0.001). The abundance of several genera such as Streptococcus, Prevotella, Veillonella, and Selenomonas was higher in the high consumption group compared with the low consumption group following false discovery rate correction (p < 0.05). Children with high sweet treat consumption exhibited higher proportions of nitrate reduction IV and gondoate biosynthesis pathways compared with the low consumption group (p < 0.05). To conclude, sweet treat consumption shapes saliva microbiota. Children who consume a high level of sweet treats exhibited different compositions and metabolic pathways compared with children who consume low levels of sweet treats. Our findings reveal novel insights into the relationship between sugary diets and oral microbiota.
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Affiliation(s)
- Sohvi Lommi
- Department of Public Health, University of Helsinki, Helsinki, Finland.,Folkhälsan Research Center, Helsinki, Finland
| | - Muhammed Manzoor
- Department of Oral and Maxillofacial Diseases, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Elina Engberg
- Folkhälsan Research Center, Helsinki, Finland.,Department of Psychology and Logopedics, Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Nitin Agrawal
- Folkhälsan Research Center, Helsinki, Finland.,Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Timo A Lakka
- Institute of Biomedicine, School of Medicine, University of Eastern Finland, Kuopio, Finland.,Department of Clinical Physiology and Nuclear Medicine, Kuopio University Hospital, Kuopio, Finland.,Foundation for Research in Health Exercise and Nutrition, Kuopio Research Institute of Exercise Medicine, Kuopio, Finland
| | - Jukka Leinonen
- Department of Clinical Dentistry, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway
| | - Kaija-Leena Kolho
- Children's Hospital, University of Helsinki and Helsinki University Hospital (HUS), Helsinki, Finland.,Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
| | - Heli Viljakainen
- Folkhälsan Research Center, Helsinki, Finland.,Faculty of Medicine, University of Helsinki, Helsinki, Finland
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21
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Chellappa SL, Engen PA, Naqib A, Qian J, Vujovic N, Rahman N, Green SJ, Garaulet M, Keshavarzian A, Scheer FAJL. Proof-of-principle demonstration of endogenous circadian system and circadian misalignment effects on human oral microbiota. FASEB J 2021; 36:e22043. [PMID: 34861073 DOI: 10.1096/fj.202101153r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 10/17/2021] [Accepted: 11/01/2021] [Indexed: 12/31/2022]
Abstract
Circadian misalignment-the misalignment between the central circadian "clock" and behavioral and environmental cycles (including sleep/wake, fasting/eating, dark/light)-results in adverse cardiovascular and metabolic effects. Potential underlying mechanisms for these adverse effects include alterations in the orogastrointestinal microbiota. However, it remains unknown whether human oral microbiota has endogenous circadian rhythms (i.e., independent of sleep/wake, fasting/eating, and dark/light cycles) and whether circadian misalignment influences oral microbiota community composition. Healthy young individuals [27.3 ± 2.3 years (18-35 years), 4 men and 2 women, body-mass index range: 18-28 kg/m2 ] were enrolled in a stringently controlled 14-day circadian laboratory protocol. This included a 32-h constant routine (CR) protocol (endogenous circadian baseline assessment), a forced desynchrony protocol with four 28-h "days" under ~3 lx to induce circadian misalignment, and a post-misalignment 40-h CR protocol. Microbiota assessments were performed on saliva samples collected every 4 h throughout both CR protocols. Total DNA was extracted and processed using high-throughput 16S ribosomal RNA gene amplicon sequencing. The relative abundance of specific oral microbiota populations, i.e., one of the five dominant phyla, and three of the fourteen dominant genera, exhibited significant endogenous circadian rhythms. Importantly, circadian misalignment dramatically altered the oral microbiota landscape, such that four of the five dominant phyla and eight of the fourteen dominant genera exhibited significant circadian misalignment effects. Moreover, circadian misalignment significantly affected the metagenome functional content of oral microbiota (inferred gene content analysis), as indicated by changes in specific functional pathways associated with metabolic control and immunity. Collectively, our proof-of-concept study provides evidence for endogenous circadian rhythms in human oral microbiota and show that even relatively short-term experimental circadian misalignment can dramatically affect microbiota community composition and functional pathways involved in metabolism and immune function. These proof-of-principle findings have translational relevance to individuals typically exposed to circadian misalignment, including night shift workers and frequent flyers.
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Affiliation(s)
- Sarah L Chellappa
- Medical Chronobiology Program, Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women's Hospital, Boston, Massachusetts, USA.,Division of Sleep Medicine, Harvard Medical School, Boston, Massachusetts, USA.,Department of Nuclear Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
| | - Phillip A Engen
- Rush Medical College, Rush Center for Integrated Microbiome and Chronobiology Research, Rush University Medical Center, Chicago, Illinois, USA
| | - Ankur Naqib
- Rush Medical College, Rush Center for Integrated Microbiome and Chronobiology Research, Rush University Medical Center, Chicago, Illinois, USA
| | - Jingyi Qian
- Medical Chronobiology Program, Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women's Hospital, Boston, Massachusetts, USA.,Division of Sleep Medicine, Harvard Medical School, Boston, Massachusetts, USA
| | - Nina Vujovic
- Medical Chronobiology Program, Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women's Hospital, Boston, Massachusetts, USA.,Division of Sleep Medicine, Harvard Medical School, Boston, Massachusetts, USA
| | - Nishath Rahman
- Medical Chronobiology Program, Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Stefan J Green
- Genomics and Microbiome Core Facility, Rush University Medical Center, Chicago, Illinois, USA
| | - Marta Garaulet
- Department of Physiology, Regional Campus of International Excellence, University of Murcia, Murcia, Spain.,Biomedical Research Institute of Murcia, IMIB-Arrixaca-UMU, University Clinical Hospital, Murcia, Spain
| | - Ali Keshavarzian
- Rush Medical College, Rush Center for Integrated Microbiome and Chronobiology Research, Rush University Medical Center, Chicago, Illinois, USA.,Department of Physiology, Rush University Medical Center, Chicago, Illinois, USA.,Department of Medicine, Rush University Medical Center, Chicago, Illinois, USA
| | - Frank A J L Scheer
- Medical Chronobiology Program, Division of Sleep and Circadian Disorders, Departments of Medicine and Neurology, Brigham and Women's Hospital, Boston, Massachusetts, USA.,Division of Sleep Medicine, Harvard Medical School, Boston, Massachusetts, USA
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22
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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: 10] [Impact Index Per Article: 3.3] [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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23
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Carasso S, Fishman B, Lask LS, Shochat T, Geva-Zatorsky N, Tauber E. Metagenomic analysis reveals the signature of gut microbiota associated with human chronotypes. FASEB J 2021; 35:e22011. [PMID: 34695305 DOI: 10.1096/fj.202100857rr] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 10/06/2021] [Accepted: 10/11/2021] [Indexed: 01/20/2023]
Abstract
Patterns of diurnal activity differ substantially between individuals, with early risers and late sleepers being examples of opposite chronotypes. Growing evidence suggests that the late chronotype significantly impacts the risk of developing mood disorders, obesity, diabetes, and other chronic diseases. Despite the vast potential of utilizing chronotype information for precision medicine, those factors that shape chronotypes remain poorly understood. Here, we assessed whether the various chronotypes are associated with different gut microbiome compositions. Using metagenomic sequencing analysis, we established a distinct signature associated with chronotype based on two bacterial genera, Alistipes (elevated in "larks") and Lachnospira (elevated in "owls"). We identified three metabolic pathways associated with the early chronotype, and linked distinct dietary patterns with different chronotypes. Our work demonstrates an association between the gut microbiome and chronotype and may represent the first step towards developing dietary interventions aimed at ameliorating the deleterious health correlates of the late chronotype.
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Affiliation(s)
- Shaqed Carasso
- Department of Cell Biology and Cancer Science, Rappaport Faculty of Medicine, Rappaport Technion Integrated Cancer Center (TICC), Haifa, Israel
| | - Bettina Fishman
- Department of Evolutionary and Environmental Biology and Institute of Evolution, University of Haifa, Haifa, Israel
| | - Liel Stelmach Lask
- Cheryl Spencer Department of Nursing, Faculty of Social Welfare and Health Sciences, University of Haifa, Haifa, Israel
| | - Tamar Shochat
- Cheryl Spencer Department of Nursing, Faculty of Social Welfare and Health Sciences, University of Haifa, Haifa, Israel
| | - Naama Geva-Zatorsky
- Department of Cell Biology and Cancer Science, Rappaport Faculty of Medicine, Rappaport Technion Integrated Cancer Center (TICC), Haifa, Israel.,Canadian Institute for Advanced Research (CIFAR), MaRS Centre, Toronto, Ontario, Canada
| | - Eran Tauber
- Department of Evolutionary and Environmental Biology and Institute of Evolution, University of Haifa, Haifa, Israel
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24
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Hui Y, Wang X, Yu Z, Feng H, Li C, Mao L, Fan X, Lin L, Cui B, Chen X, Sun L, Wang B, Sun C. Relationship Between Sleep-Wake Disturbance and Risk of Malnutrition in Hospitalized Patients With Cirrhosis. Front Nutr 2021; 8:719176. [PMID: 34532336 PMCID: PMC8439378 DOI: 10.3389/fnut.2021.719176] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 08/09/2021] [Indexed: 01/05/2023] Open
Abstract
Both sleep-wake disturbance and malnutrition are common in cirrhosis and might be associated with similar adverse outcomes, such as impaired health-related quality of life, hepatic encephalopathy, and sarcopenia, but there is no study investigating the relationship between these two. We aimed to explore the relationship between sleep-wake disturbance [estimated by the Pittsburgh Sleep Quality Index (PSQI)] and malnutrition risk [estimated by the Royal Free Hospital-Nutritional Prioritizing Tool (RFH-NPT)]. About 150 patients with cirrhosis were prospectively recruited. The nutritional risk is classified as low (0 points), moderate (1 point), and high (2-7 points) according to the RFH-NPT score. A global PSQI >5 indicated poor sleepers. Furthermore, multivariate linear regression analyses were performed to determine the relationship between sleep-wake disturbance and malnutrition. The median PSQI was seven, and RFH-NPT was two in the entire cohort, with 60.67 and 56.67% rated as poor sleep quality and high malnutrition risk, respectively. Patients with cirrhosis with poor sleep quality had significantly higher RFH-NPT score (3 vs. 1, P = 0.007). Our multivariate analyses indicated that male patients (β = 0.279, P < 0.001), ascites (β = 0.210, P = 0.016), and PSQI (β = 0.262, P = 0.001) were independent predictors of malnutrition. In addition, the differences regarding PSQI score were more significant in male patients, as well as those >65 years or with Child-Turcotte-Pugh class A/B (CTP-A/B) or the median model for end-stage liver disease (MELD) <15. Taken together, the sleep-wake disturbance is strongly correlated with high malnutrition risk in patients with cirrhosis. Given sleep-wake disturbance is remediable, it is tempting to incorporate therapies to reverse poor sleep quality for improving nutritional status in patients with cirrhosis.
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Affiliation(s)
- Yangyang Hui
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin, China.,Tianjin Medical University General Hospital, Tianjin Institute of Digestive Disease, Tianjin, China
| | - Xiaoyu Wang
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin, China.,Tianjin Medical University General Hospital, Tianjin Institute of Digestive Disease, Tianjin, China
| | - Zihan Yu
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin, China.,Tianjin Medical University General Hospital, Tianjin Institute of Digestive Disease, Tianjin, China
| | - Hongjuan Feng
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin, China.,Department of Nutriology, Tianjin Third Central Hospital, Tianjin, China
| | - Chaoqun Li
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin, China.,Department of Internal Medicine, Tianjin Hexi Hospital, Tianjin, China
| | - Lihong Mao
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin, China.,Tianjin Medical University General Hospital, Tianjin Institute of Digestive Disease, Tianjin, China
| | - Xiaofei Fan
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin, China.,Tianjin Medical University General Hospital, Tianjin Institute of Digestive Disease, Tianjin, China
| | - Lin Lin
- Department of Gastroenterology, Tianjin Medical University General Hospital Airport Hospital, Tianjin, China
| | - Binxin Cui
- Department of Gastroenterology, Tianjin Medical University General Hospital Airport Hospital, Tianjin, China
| | - Xin Chen
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin, China.,Tianjin Medical University General Hospital, Tianjin Institute of Digestive Disease, Tianjin, China
| | - Longhao Sun
- Department of General Surgery, Tianjin Medical University General Hospital, Tianjin, China
| | - Bangmao Wang
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin, China.,Tianjin Medical University General Hospital, Tianjin Institute of Digestive Disease, Tianjin, China
| | - Chao Sun
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin, China.,Tianjin Medical University General Hospital, Tianjin Institute of Digestive Disease, Tianjin, China.,Department of Gastroenterology, Tianjin Medical University General Hospital Airport Hospital, Tianjin, China
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25
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Hernández-González T, González-Barrio R, Escobar C, Madrid JA, Periago MJ, Collado MC, Scheer FAJL, Garaulet M. Timing of chocolate intake affects hunger, substrate oxidation, and microbiota: A randomized controlled trial. FASEB J 2021; 35:e21649. [PMID: 34164846 DOI: 10.1096/fj.202002770rr] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Revised: 04/20/2021] [Accepted: 04/21/2021] [Indexed: 11/11/2022]
Abstract
Eating chocolate in the morning or in the evening/at night, may differentially affect energy balance and impact body weight due to changes in energy intake, substrate oxidation, microbiota (composition/function), and circadian-related variables. In a randomized controlled trial, postmenopausal females (n = 19) had 100 g of chocolate in the morning (MC), in the evening/at night (EC), or no chocolate (N) for 2 weeks and ate any other food ad libitum. Our results show that 14 days of chocolate intake did not increase body weight. Chocolate consumption decreased hunger and desire for sweets (P < .005), and reduced ad libitum energy intake by ~300 kcal/day during MC and ~150 kcal/day during EC (P = .01), but did not fully compensate for the extra energy contribution of chocolate (542 kcal/day). EC increased physical activity by +6.9%, heat dissipation after meals +1.3%, and carbohydrate oxidation by +35.3% (P < .05). MC reduced fasting glucose (4.4%) and waist circumference (-1.7%) and increased lipid oxidation (+25.6%). Principal component analyses showed that both timings of chocolate intake resulted in differential microbiota profiles and function (P < .05). Heat map of wrist temperature and sleep records showed that EC induced more regular timing of sleep episodes with lower variability of sleep onset among days than MC (60 min vs 78 min; P = .028). In conclusion, having chocolate in the morning or in the evening/night results in differential effects on hunger and appetite, substrate oxidation, fasting glucose, microbiota (composition and function), and sleep and temperature rhythms. Results highlight that the "when" we eat is a relevant factor to consider in energy balance and metabolism.
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Affiliation(s)
- Teresa Hernández-González
- Department of Physiology, Regional Campus of International Excellence, University of Murcia, Murcia, Spain.,Biomedical Research Institute of Murcia, IMIB-Arrixaca-UMU, University Clinical Hospital, Murcia, Spain
| | - Rocío González-Barrio
- Biomedical Research Institute of Murcia, IMIB-Arrixaca-UMU, University Clinical Hospital, Murcia, Spain.,Department of Food Technology, Food Science and Nutrition, Faculty of Veterinary Sciences, Regional Campus of Internacional Excellence, University of Murcia, Murcia, Spain
| | - Carolina Escobar
- Department of Anatomy, Faculty of Medicine, National Autonomous University of Mexico, Mexico City, Mexico
| | - Juan Antonio Madrid
- Department of Physiology, Regional Campus of International Excellence, University of Murcia, Murcia, Spain.,Biomedical Research Institute of Murcia, IMIB-Arrixaca-UMU, University Clinical Hospital, Murcia, Spain
| | - Maria Jesús Periago
- Biomedical Research Institute of Murcia, IMIB-Arrixaca-UMU, University Clinical Hospital, Murcia, Spain.,Department of Food Technology, Food Science and Nutrition, Faculty of Veterinary Sciences, Regional Campus of Internacional Excellence, University of Murcia, Murcia, Spain
| | - Maria Carmen Collado
- Institute of Agrochemistry and Food Technology-National Research Council (IATA-CSIC), Paterna, Spain
| | - Frank A J L Scheer
- Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, and Division of Sleep Medicine, Harvard Medical School, Boston, MA, USA
| | - Marta Garaulet
- Department of Physiology, Regional Campus of International Excellence, University of Murcia, Murcia, Spain.,Biomedical Research Institute of Murcia, IMIB-Arrixaca-UMU, University Clinical Hospital, Murcia, Spain.,Division of Sleep and Circadian Disorders, Brigham and Women's Hospital, and Division of Sleep Medicine, Harvard Medical School, Boston, MA, USA
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26
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Rajput S, Paliwal D, Naithani M, Kothari A, Meena K, Rana S. COVID-19 and Gut Microbiota: A Potential Connection. Indian J Clin Biochem 2021; 36:266-277. [PMID: 33495676 PMCID: PMC7818076 DOI: 10.1007/s12291-020-00948-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 12/10/2020] [Indexed: 02/06/2023]
Abstract
Currently, world is facing a global outbreak causing a pandemic threat known as COVID-19. This infectious disease is triggered by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). Gut microbiota harbours multi species community with a strong impact on host immune homeostasis. However, our knowledge about this gut microbiota and its symbiotic relationship with immune activation in association with SARS-CoV-2 is limited. Unbalanced bacterial flora with too many opportunistic infections can shift immune system towards a cascade of inflammatory responses leading to multi organ damage. This review will highlight immune-regulation via various mechanisms in SARS-CoV-2 infection. Diet has an unbelievable influence on gut microbiome that allows a new state of homeostasis to be reached through timing, frequency and duration of intake. This review article focuses on gut, lung microbiota and immunomodulation with specific attention on immune activation by gut microbiota.
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Affiliation(s)
- Swati Rajput
- Department of Biochemistry, AIIMS Rishikesh, Uttarakhand, 249203 India
| | - Deepanshu Paliwal
- Department of Biochemistry, AIIMS Rishikesh, Uttarakhand, 249203 India
| | - Manisha Naithani
- Department of Biochemistry, AIIMS Rishikesh, Uttarakhand, 249203 India
| | - Aashish Kothari
- Department of Microbiology, All India Institute of Medical Sciences, Rishikesh, Uttarakhand India
| | - Kiran Meena
- Department of Biochemistry, AIIMS Rishikesh, Uttarakhand, 249203 India
| | - Satyavati Rana
- Department of Biochemistry, AIIMS Rishikesh, Uttarakhand, 249203 India
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27
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Katz-Agranov N, Zandman-Goddard G. Autoimmunity and COVID-19 - The microbiotal connection. Autoimmun Rev 2021; 20:102865. [PMID: 34118455 PMCID: PMC8189735 DOI: 10.1016/j.autrev.2021.102865] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2021] [Accepted: 03/28/2021] [Indexed: 02/07/2023]
Abstract
Background and aims The novel SARS-CoV-2 has been rattling the world since its outbreak in December 2019, leading to the COVID-19 pandemic. The learning curve of this new virus has been steep, with a global scientific community desperate to learn how the virus is transmitted, how it replicates, why it causes such a wide spectrum of disease manifestations, resulting in none or few symptoms in some. Others are burdened by an intense immune response that resembles the cytokine storm syndrome (CSS), which leads to severe disease manifestations, often complicated by fatal acute respiratory distress syndrome and death. Research efforts have been focusing on finding effective cures and vaccinations for this virus. The presence of SARS-CoV-2 in the gastrointestinal (GI) tract, represented by several GI manifestations, has led to its investigation as a target for the virus and as an indicator of disease severity. The response of the microbiome (which is heavily linked to immunity) to the novel SARS-CoV-2 virus, and its role in igniting the exaggerated immune response has therefore become a focus of interest. The objective of our study was to gather the data connecting between the microbiome, the GI tract and COVID-19 and to investigate whether these reported alterations in the gut microbiome bear any resemblance to those seen in lupus, the prototypical autoimmune disease. Confirming such changes may become the steppingstone to potential therapies that may prevent transmission, progression and immune related manifestations of COVID-19, via manipulation of the gut microbiota. Methods We performed an extensive literature review, utilizing the Pubmed search engine and Google Scholar for studies evaluating the microbiome in COVID-19 patients and compared results with studies evaluating the microbiome in lupus. We searched for the terms: microbiome, dysbiosis, COVID-19, SARS-CoV-2, gastrointestinal as well as lupus and autoimmune. While there were hundreds of articles which referred to gastrointestinal manifestations in COVID-19, to date only 4 studies investigated the gastrointestinal microbiome in this setting. We compared the similarities between microbiome of COVID-19 patients and lupus patients. Results We found that there are several similar processes of immune dysregulation in patients with COVID-19 and in those with lupus, with several other alterations seen in other pathological states. Some of these similarities include loss of microbiota biodiversity, increased representation of pathobionts, which are microbes associated with inflammation and disease (i.e Proteobacteria) and a relative decrease of symbionts, which are protective microbes, associated with anti-inflammatory properties (i.e Lactobacillus). Compromise to the intestinal barrier has also been reported in both. Conclusions We conclude that the gastrointestinal tract contributes to the disease manifestations in COVID-19. Whether gastrointestinal dysbiosis is the cause or effect of gastrointestinal manifestations and several severe systemic manifestations, which may be the response to an increased pro-inflammatory environment, is still debatable and warrants further investigation. Given the resemblance of the microbiome in COVID-19 patients to that seen in lupus patients, it becomes clearer why several therapies used in autoimmune conditions are currently under investigation for the treatment of COVID-19 patients. Moreover, these findings should promote further investigating the utility of manipulation of the microbiome, via nutritional supplementation or even fecal transplantations, interventions that may alter the course of the disease, and potentially prevent disease transmission at low cost and low risk.
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Affiliation(s)
- Nurit Katz-Agranov
- Department of Medicine, Saint Elizabeth's Medical Center, Boston, MA, USA; Tufts University School of Medicine, Boston, MA, USA.
| | - Gisele Zandman-Goddard
- Department of Medicine C, Wolfson Medical Center, Holon, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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28
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Oral Microbiota of Children Is Conserved across Han, Tibetan and Hui Groups and Is Correlated with Diet and Gut Microbiota. Microorganisms 2021; 9:microorganisms9051030. [PMID: 34064692 PMCID: PMC8151815 DOI: 10.3390/microorganisms9051030] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 05/05/2021] [Accepted: 05/06/2021] [Indexed: 01/12/2023] Open
Abstract
The oral microbiota can be affected by several factors; however, little is known about the relationship between diet, ethnicity and commensal oral microbiota among school children living in close geographic proximity. In addition, the relationship between the oral and gut microbiota remains unclear. We collected saliva from 60 school children from the Tibetan, Han and Hui ethnicities for a 16S rRNA gene sequencing analysis and comparison with previously collected fecal samples. The study revealed that Bacteroidetes and Proteobacteria were the dominant phyla in the oral microbiota. The Shannon diversity was lowest in the Tibetan group. A PCA showed a substantial overlap in the distribution of the taxa, indicating a high degree of conservation among the oral microbiota across ethnic groups while the enrichment of a few specific taxa was observed across different ethnic groups. The consumption of seafood, poultry, sweets and vegetables was significantly correlated with multiple oral microbiotas. Furthermore, 123 oral genera were significantly associated with 191 gut genera. A principal coordinate analysis revealed that the oral microbiota clustered separately from the gut microbiota. This work extends the findings of previous studies comparing microbiota from human populations and provides a basis for the exploration of the interactions governing the tri-partite relationship between diet, oral microbiota and gut microbiota.
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29
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Daily Timing of Meals and Weight Loss After Bariatric Surgery: a Systematic Review. Obes Surg 2021; 31:2268-2277. [PMID: 33604863 DOI: 10.1007/s11695-021-05278-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 01/27/2021] [Accepted: 02/08/2021] [Indexed: 10/22/2022]
Abstract
The timing of food intake throughout the day can alter circadian clocks and metabolism to modulate the course of obesity. We conducted a systematic literature review to determine whether the timing of meals could alter the change in body weight after bariatric surgery in adults. Twelve cohort studies examined the association between meal timing and changes in body weight after bariatric surgery. Eight studies suggested an association between meal timing and weight loss. All studies examined simple exposure variables such as frequency of breakfast or dinner consumption and overnight meals. Overall, the low-quality evidence that food consumption at the end of the day is associated with lower weight loss after bariatric surgery in adults warrants further research.
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30
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Sarkar A, Kuehl MN, Alman AC, Burkhardt BR. Linking the oral microbiome and salivary cytokine abundance to circadian oscillations. Sci Rep 2021; 11:2658. [PMID: 33514800 PMCID: PMC7846843 DOI: 10.1038/s41598-021-81420-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 01/06/2021] [Indexed: 12/17/2022] Open
Abstract
Saliva has immense potential as a diagnostic fluid for identification and monitoring of several systemic diseases. Composition of the microbiome and inflammation has been associated and reflective of oral and overall health. In addition, the relative ease of collection of saliva further strengthens large-scale diagnostic purposes. However, the future clinical utility of saliva cannot be fully determined without a detailed examination of daily fluctuations that may occur within the oral microbiome and inflammation due to circadian rhythm. In this study, we explored the association between the salivary microbiome and the concentration of IL-1β, IL-6 and IL-8 in the saliva of 12 healthy adults over a period of 24 h by studying the 16S rRNA gene followed by negative binomial mixed model regression analysis. To determine the periodicity and oscillation patterns of both the oral microbiome and inflammation (represented by the cytokine levels), two of the twelve subjects were studied for three consecutive days. Our results indicate that the Operational Taxonomic Units (OTUs) belonging to Prevotella, SR1 and Ruminococcaceae are significantly associated to IL-1β while Prevotella and Granulicatella were associated with IL-8. Our findings have also revealed a periodicity of both the oral microbiome (OTUs) and inflammation (cytokine levels) with identifiable patterns between IL-1β and Prevotella, and IL-6 with Prevotella, Neisseria and Porphyromonas. We believe that this study represents the first measure and demonstration of simultaneous periodic fluctuations of cytokine levels and specific populations of the oral microbiome.
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Affiliation(s)
- Anujit Sarkar
- College of Public Health, University of South Florida, Tampa, FL, 33612, USA
| | - Melanie N Kuehl
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, Tampa, FL, 33620, USA.
- IPS Labs, 1 Harvard Way, Hillsborough Township, NJ, 08844, USA.
| | - Amy C Alman
- College of Public Health, University of South Florida, Tampa, FL, 33612, USA
| | - Brant R Burkhardt
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, Tampa, FL, 33620, USA.
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31
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Frazier K, Frith M, Harris D, Leone VA. Mediators of Host–Microbe Circadian Rhythms in Immunity and Metabolism. BIOLOGY 2020; 9:biology9120417. [PMID: 33255707 PMCID: PMC7761326 DOI: 10.3390/biology9120417] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 11/20/2020] [Indexed: 12/27/2022]
Abstract
Simple Summary Circadian rhythms serve as the body’s internal metronome, driving responses to environmental cues over a 24-h period. Essential to nearly all life forms, the core circadian clock gene network drives physiological outputs associated with metabolic and immune responses. Modern-day disruptions to host circadian rhythms, such as shift work and jet lag, result in aberrant metabolic responses and development of complex diseases, including obesity and Type 2 Diabetes. These complex diseases are also impacted by interactions between gut microbes and the host immune system, driving a chronic low-grade inflammatory response. Gut microbes exhibit circadian dynamics that are closely tied to host circadian networks and disrupting microbial rhythmicity contributes to metabolic diseases. The underlying mediators that drive communication between host metabolism, the immune system, gut microbes, and circadian networks remain unknown, particularly in humans. Here, we explore the current state of knowledge regarding the transkingdom control of circadian networks and discuss gaps and challenges to overcome to push the field forward from the preclinical to clinical setting. Abstract Circadian rhythms are essential for nearly all life forms, mediated by a core molecular gene network that drives downstream molecular processes involved in immune function and metabolic regulation. These biological rhythms serve as the body’s metronome in response to the 24-h light:dark cycle and other timed stimuli. Disrupted circadian rhythms due to drastic lifestyle and environmental shifts appear to contribute to the pathogenesis of metabolic diseases, although the mechanisms remain elusive. Gut microbiota membership and function are also key mediators of metabolism and are highly sensitive to environmental perturbations. Recent evidence suggests rhythmicity of gut microbes is essential for host metabolic health. The key molecular mediators that transmit rhythmic signals between microbes and host metabolic networks remain unclear, but studies suggest the host immune system may serve as a conduit between these two systems, providing homeostatic signals to maintain overall metabolic health. Despite this knowledge, the precise mechanism and communication modalities that drive these rhythms remain unclear, especially in humans. Here, we review the current literature examining circadian dynamics of gut microbes, the immune system, and metabolism in the context of metabolic dysregulation and provide insights into gaps and challenges that remain.
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Affiliation(s)
- Katya Frazier
- Department of Medicine, University of Chicago, Chicago, IL 60637, USA; (K.F.); (M.F.); (D.H.)
| | - Mary Frith
- Department of Medicine, University of Chicago, Chicago, IL 60637, USA; (K.F.); (M.F.); (D.H.)
- Medical Scientist Training Program, University of Chicago, Chicago, IL 60637, USA
| | - Dylan Harris
- Department of Medicine, University of Chicago, Chicago, IL 60637, USA; (K.F.); (M.F.); (D.H.)
| | - Vanessa A. Leone
- Department of Medicine, University of Chicago, Chicago, IL 60637, USA; (K.F.); (M.F.); (D.H.)
- Department of Animal and Dairy Sciences, University of Wisconsin-Madison, Madison, WI 53706, USA
- Correspondence: ; Tel.: +1-608-262-5551
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Papadopoulou RT, Theodorou MR, Ieong CS, Ballantyne K, Marshall D, Verney A, Roig M, Nichols B, Gerasimidis K. The Acute Effect of Meal Timing on the Gut Microbiome and the Cardiometabolic Health of the Host: A Crossover Randomized Control Trial. ANNALS OF NUTRITION AND METABOLISM 2020; 76:322-333. [PMID: 33075782 DOI: 10.1159/000510646] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Accepted: 07/27/2020] [Indexed: 11/19/2022]
Abstract
PURPOSE The interaction of diet with gut microbiome has been implicated in the onset of cardiovascular disease. The gut microbiome displays diurnal rhythms, which may be influenced by meal timing. OBJECTIVE This study aimed to investigate the effect of the timing of main meal consumption on the microbiome and cardiometabolic biomarkers of the host. METHODS Seventeen healthy adults randomly consumed an isocaloric diet for 7 days, twice, by alternating lunch with dinner meals, and with a 2-week washout in-between. Sixty percent of the participants' daily energy requirements was consumed either as lunch or dinner, respectively. Meals were provided free to the participants. All fecal samples produced the last 3 days of each intervention were collected and analyzed for microbial profiling (16S rRNA gene amplicon sequencing), quantitative estimation of representative bacterial groups (qPCR) of the gut microbiome, and the output of short-chain fatty acids (SCFA) in feces. Fasted blood samples were analyzed for low-grade inflammatory biomarkers, blood lipids, insulin, and glucose levels. Cumulative energy loss in feces was measured over the collection period using bomb calorimetry. RESULTS Meal timing had no significant effects on fecal SCFA output, energy loss in feces, microbial community profiling, and bacterial species relative abundance. The absolute concentration of Escherichia coli was significantly higher after the large lunch intervention (p = 0.02). No effects on blood biomarkers of cardiometabolic health were observed. CONCLUSIONS In a well-controlled study, main meal timing displayed minimal acute effects on the gut microbiome composition, its diet-related function, and blood biomarkers of cardiometabolic health.
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Affiliation(s)
- Rodanthi Thalia Papadopoulou
- Human Nutrition, School of Medicine, Dentistry and Nursing, University of Glasgow, New Lister Building, Glasgow, United Kingdom
| | - Maria Rafailia Theodorou
- Human Nutrition, School of Medicine, Dentistry and Nursing, University of Glasgow, New Lister Building, Glasgow, United Kingdom
| | - Chi San Ieong
- Human Nutrition, School of Medicine, Dentistry and Nursing, University of Glasgow, New Lister Building, Glasgow, United Kingdom
| | - Katrina Ballantyne
- Human Nutrition, School of Medicine, Dentistry and Nursing, University of Glasgow, New Lister Building, Glasgow, United Kingdom
| | - Danae Marshall
- Human Nutrition, School of Medicine, Dentistry and Nursing, University of Glasgow, New Lister Building, Glasgow, United Kingdom
| | - Anais Verney
- Human Nutrition, School of Medicine, Dentistry and Nursing, University of Glasgow, New Lister Building, Glasgow, United Kingdom
| | - Marine Roig
- Human Nutrition, School of Medicine, Dentistry and Nursing, University of Glasgow, New Lister Building, Glasgow, United Kingdom
| | - Ben Nichols
- Human Nutrition, School of Medicine, Dentistry and Nursing, University of Glasgow, New Lister Building, Glasgow, United Kingdom
| | - Konstantinos Gerasimidis
- Human Nutrition, School of Medicine, Dentistry and Nursing, University of Glasgow, New Lister Building, Glasgow, United Kingdom,
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Omori M, Kato-Kogoe N, Sakaguchi S, Fukui N, Yamamoto K, Nakajima Y, Inoue K, Nakano H, Motooka D, Nakano T, Nakamura S, Ueno T. Comparative evaluation of microbial profiles of oral samples obtained at different collection time points and using different methods. Clin Oral Investig 2020; 25:2779-2789. [PMID: 32975702 DOI: 10.1007/s00784-020-03592-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Accepted: 09/15/2020] [Indexed: 01/05/2023]
Abstract
OBJECTIVES Recently, the oral microbiome has been found to be associated with oral and general health status. Although various oral sample collection protocols are available, the potential differences between the results yielded by these protocols remain unclear. In this study, we aimed to determine the effects of different time points and methods of oral sample collection on the outcomes of microbiome analysis. MATERIALS AND METHODS Oral samples were collected from eight healthy individuals at four different time points: 2 h after eating, immediately after teeth brushing, immediately after waking up, and 2 h after eating on the subsequent day. Four methods of saliva collection were evaluated: spitting, gum chewing, cotton swab, and oral rinse. Oral microbiomes of these samples were compared by analyzing the bacterial 16S rRNA gene sequence data. RESULTS The oral microbial composition at the genus level was similar among all sample collection time points and methods. Alpha diversity was not significantly different among the groups, whereas beta diversity was different between the spitting and cotton swab methods. Compared with the between-subject variations, the weighted UniFrac distances between the groups were not minor. CONCLUSIONS Although the oral microbiome profiles obtained at different collection time points and using different methods were similar, some differences were detected. CLINICAL RELEVANCE The results of the present study suggest that although all the described protocols are useful, comparisons among microbiomes of samples collected by different methods are not appropriate. Researchers must be aware of the issues regarding the impact of saliva collection methods.
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Affiliation(s)
- Michi Omori
- Department of Dentistry and Oral Surgery, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki City, Osaka, 569-8686, Japan
| | - Nahoko Kato-Kogoe
- Department of Dentistry and Oral Surgery, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki City, Osaka, 569-8686, Japan.
| | - Shoichi Sakaguchi
- Department of Microbiology and Infection Control, Osaka Medical College, Takatsuki, Osaka, Japan
| | - Nozomu Fukui
- Department of Dentistry and Oral Surgery, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki City, Osaka, 569-8686, Japan
| | - Kayoko Yamamoto
- Department of Dentistry and Oral Surgery, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki City, Osaka, 569-8686, Japan
| | - Yoichiro Nakajima
- Department of Dentistry and Oral Surgery, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki City, Osaka, 569-8686, Japan
| | - Kazuya Inoue
- Department of Dentistry and Oral Surgery, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki City, Osaka, 569-8686, Japan
| | - Hiroyuki Nakano
- Department of Dentistry and Oral Surgery, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki City, Osaka, 569-8686, Japan
| | - Daisuke Motooka
- Department of Infection Metagenomics, Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
| | - Takashi Nakano
- Department of Microbiology and Infection Control, Osaka Medical College, Takatsuki, Osaka, Japan
| | - Shota Nakamura
- Department of Infection Metagenomics, Genome Information Research Center, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
| | - Takaaki Ueno
- Department of Dentistry and Oral Surgery, Osaka Medical College, 2-7 Daigaku-machi, Takatsuki City, Osaka, 569-8686, Japan
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Abstract
Gut microbes exhibit diurnal rhythmicity, and disruptions in this rhythmicity potentially impact host health. In this issue of Cell Host & Microbe, Reitmeier et al. (2020) employ timestamped gut microbiome sequencing data from human subjects coupled with machine learning to identify microbial rhythmicity patterns that predict Type 2 Diabetes incidence.
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Affiliation(s)
- Katya Frazier
- Department of Medicine, The University of Chicago, Chicago, IL 60637, USA
| | - Vanessa A Leone
- Department of Animal & Dairy Sciences, University of Wisconsin-Madison, Madison, WI 53706, USA.
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Guo JH, Ma XH, Ma H, Zhang Y, Tian ZQ, Wang X, Shao YC. Circadian misalignment on submarines and other non-24-h environments - from research to application. Mil Med Res 2020; 7:39. [PMID: 32814592 PMCID: PMC7437048 DOI: 10.1186/s40779-020-00268-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Accepted: 08/10/2020] [Indexed: 11/10/2022] Open
Abstract
Circadian clocks have important physiological and behavioral functions in humans and other organisms, which enable organisms to anticipate and respond to periodic environmental changes. Disturbances in circadian rhythms impair sleep, metabolism, and behavior. People with jet lag, night workers and shift workers are vulnerable to circadian misalignment. In addition, non-24-h cycles influence circadian rhythms and cause misalignment and disorders in different species, since these periods are beyond the entrainment ranges. In certain special conditions, e.g., on submarines and commercial ships, non-24-h watch schedules are often employed, which have also been demonstrated to be deleterious to circadian rhythms. Personnel working under such conditions suffer from circadian misalignment with their on-watch hours, leading to increased health risks and decreased cognitive performance. In this review, we summarize the research progress and knowledge concerning circadian rhythms on submarines and other environments in which non-24-h watch schedules are employed.
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Affiliation(s)
- Jin-Hu Guo
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510006, China.
| | - Xiao-Hong Ma
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Huan Ma
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Yin Zhang
- Key Laboratory of Gene Engineering of the Ministry of Education, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510006, China
| | - Zhi-Qiang Tian
- China Institute of Marine Technology and Economy, Beijing, 100081, China
| | - Xin Wang
- China Institute of Marine Technology and Economy, Beijing, 100081, China
| | - Yong-Cong Shao
- School of Psychology, Beijing Sport University, Beijing, 100084, China
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Arrhythmic Gut Microbiome Signatures Predict Risk of Type 2 Diabetes. Cell Host Microbe 2020; 28:258-272.e6. [PMID: 32619440 DOI: 10.1016/j.chom.2020.06.004] [Citation(s) in RCA: 124] [Impact Index Per Article: 31.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 05/08/2020] [Accepted: 06/08/2020] [Indexed: 12/13/2022]
Abstract
Lifestyle, obesity, and the gut microbiome are important risk factors for metabolic disorders. We demonstrate in 1,976 subjects of a German population cohort (KORA) that specific microbiota members show 24-h oscillations in their relative abundance and identified 13 taxa with disrupted rhythmicity in type 2 diabetes (T2D). Cross-validated prediction models based on this signature similarly classified T2D. In an independent cohort (FoCus), disruption of microbial oscillation and the model for T2D classification was confirmed in 1,363 subjects. This arrhythmic risk signature was able to predict T2D in 699 KORA subjects 5 years after initial sampling, being most effective in combination with BMI. Shotgun metagenomic analysis functionally linked 26 metabolic pathways to the diurnal oscillation of gut bacteria. Thus, a cohort-specific risk pattern of arrhythmic taxa enables classification and prediction of T2D, suggesting a functional link between circadian rhythms and the microbiome in metabolic diseases.
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Kohn JN, Kosciolek T, Marotz C, Aleti G, Guay-Ross RN, Hong SH, Hansen S, Swafford A, Knight R, Hong S. Differing salivary microbiome diversity, community and diurnal rhythmicity in association with affective state and peripheral inflammation in adults. Brain Behav Immun 2020; 87:591-602. [PMID: 32061904 DOI: 10.1016/j.bbi.2020.02.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 02/04/2020] [Accepted: 02/09/2020] [Indexed: 12/14/2022] Open
Affiliation(s)
| | - Tomasz Kosciolek
- Department of Pediatrics, United States; Current affiliation: Małopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
| | | | | | | | | | | | | | - Rob Knight
- Department of Pediatrics, United States; Center for Microbiome Innovation, United States; Department of Computer Science and Engineering, United States; Department of Bioengineering, United States
| | - Suzi Hong
- Department of Psychiatry, United States; Center for Microbiome Innovation, United States; Department of Family Medicine and Public Health, University of California, San Diego, United States.
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Alvarez Y, Glotfelty LG, Blank N, Dohnalová L, Thaiss CA. The Microbiome as a Circadian Coordinator of Metabolism. Endocrinology 2020; 161:bqaa059. [PMID: 32291454 PMCID: PMC7899566 DOI: 10.1210/endocr/bqaa059] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2020] [Accepted: 04/13/2020] [Indexed: 12/15/2022]
Abstract
The microbiome is critically involved in the regulation of systemic metabolism. An important but poorly understood facet of this regulation is the diurnal activity of the microbiome. Herein, we summarize recent developments in our understanding of the diurnal properties of the microbiome and their integration into the circadian regulation of organismal metabolism. The microbiome may be involved in the detrimental consequences of circadian disruption for host metabolism and the development of metabolic disease. At the same time, the mechanisms by which microbiome diurnal activity is integrated into host physiology reveal several translational opportunities by which the time of day can be harnessed to optimize microbiome-based therapies. The study of circadian microbiome properties may thus provide a new avenue for treating disorders associated with circadian disruption from the gut.
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Affiliation(s)
- Yelina Alvarez
- Microbiology Department, Institute for Immunology, and Institute for Diabetes, Obesity & Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Department of Gastroenterology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Lila G Glotfelty
- Microbiology Department, Institute for Immunology, and Institute for Diabetes, Obesity & Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Department of Gastroenterology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Niklas Blank
- Microbiology Department, Institute for Immunology, and Institute for Diabetes, Obesity & Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
- Department of Chemistry, University of Konstanz, Konstanz, Germany
| | - Lenka Dohnalová
- Microbiology Department, Institute for Immunology, and Institute for Diabetes, Obesity & Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Christoph A Thaiss
- Microbiology Department, Institute for Immunology, and Institute for Diabetes, Obesity & Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
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Zheng D, Ratiner K, Elinav E. Circadian Influences of Diet on the Microbiome and Immunity. Trends Immunol 2020; 41:512-530. [DOI: 10.1016/j.it.2020.04.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 04/05/2020] [Accepted: 04/06/2020] [Indexed: 02/08/2023]
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Saran AR, Dave S, Zarrinpar A. Circadian Rhythms in the Pathogenesis and Treatment of Fatty Liver Disease. Gastroenterology 2020; 158:1948-1966.e1. [PMID: 32061597 PMCID: PMC7279714 DOI: 10.1053/j.gastro.2020.01.050] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Revised: 01/27/2020] [Accepted: 01/29/2020] [Indexed: 12/13/2022]
Abstract
Circadian clock proteins are endogenous timing mechanisms that control the transcription of hundreds of genes. Their integral role in coordinating metabolism has led to their scrutiny in a number of diseases, including nonalcoholic fatty liver disease (NAFLD). Discoordination between central and peripheral circadian rhythms is a core feature of nearly every genetic, dietary, or environmental model of metabolic syndrome and NAFLD. Restricting feeding to a defined daily interval (time-restricted feeding) can synchronize the central and peripheral circadian rhythms, which in turn can prevent or even treat the metabolic syndrome and hepatic steatosis. Importantly, a number of proteins currently under study as drug targets in NAFLD (sterol regulatory element-binding protein [SREBP], acetyl-CoA carboxylase [ACC], peroxisome proliferator-activator receptors [PPARs], and incretins) are modulated by circadian proteins. Thus, the clock can be used to maximize the benefits and minimize the adverse effects of pharmaceutical agents for NAFLD. The circadian clock itself has the potential for use as a target for the treatment of NAFLD.
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Affiliation(s)
- Anand R. Saran
- Division of Gastroenterology, University of California, San Diego, La Jolla, CA
| | - Shravan Dave
- Division of Gastroenterology, University of California, San Diego, La Jolla, CA
| | - Amir Zarrinpar
- Division of Gastroenterology, University of California, San Diego, La Jolla, California; Veterans Affairs Health Sciences San Diego, La Jolla, California; Institute of Diabetes and Metabolic Health, University of California, San Diego, La Jolla, California; Center for Microbiome Innovation, University of California, San Diego, La Jolla, California.
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Viljakainen J, Raju SC, Viljakainen H, Figueiredo RADO, Roos E, Weiderpass E, Rounge TB. Meal Regularity Plays a Role in Shaping the Saliva Microbiota. Front Microbiol 2020; 11:757. [PMID: 32390990 PMCID: PMC7194025 DOI: 10.3389/fmicb.2020.00757] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 03/30/2020] [Indexed: 01/14/2023] Open
Abstract
BACKGROUND Diet may influence health directly or indirectly via the human microbiota, emphasizing the need to unravel these complex relationships for future health benefits. Associations between eating habits and gut microbiota have been shown, but less is known about the association between eating habits and saliva microbiota. OBJECTIVE The aim of this study was to investigate if eating habits and meal patterns are associated with the saliva microbiota. METHODS In total, 842 adolescents, aged 11-14 years, from the Finnish Health in Teens (Fin-HIT) study cohort were included in this study. Eating habits and breakfast and dinner patterns were derived from a web-based questionnaire answered in school. Three major eating habit groups were identified: fruit and vegetable avoiders (FV avoiders), healthy and unhealthy. Microbiota profiles were produced from 16S rRNA gene (V3-V4) sequencing of DNA from the saliva samples. Statistical models were adjusted for gender, age, parental language, body mass index (BMI) categories, and sequencing depth. RESULTS Regular breakfast eaters had a higher alpha diversity (Shannon index with mean (standard error of means) 2.27 (0.03) vs. 2.22 (0.03), p = 0.06, inverse Simpson's index with 6.27 (0.17) vs. 5.80 (0.02), p = 0.01), and slight differences in bacterial composition (PERMANOVA: p = 0.001) compared with irregular breakfast eaters. A similar trend in alpha diversity was observed between regular and irregular dinner eaters (Shannon index with 2.27 (0.03) vs. 2.22 (0.03), p = 0.054, inverse Simpson's index with 6.23 (0.17) vs. 6.04 (0.22), p = 0.28), while no difference was found in composition (PERMANOVA: p = 0.08). No differences were identified between eating habit groups and saliva microbiota diversity (Shannon index p = 0.77, inverse Simpson's index p = 0.94) or composition (PERMANOVA: p = 0.13). FV avoiders, irregular breakfast eaters and irregular dinner eaters had high abundances of Prevotella. CONCLUSION Regularity of eating, especially breakfast eating, was associated with more diverse saliva microbiota and different composition compared with irregular eaters. However, the dissimilarities in composition were small between regular and irregular breakfast eaters. Our results suggest that Prevotella abundances in saliva were common in FV avoiders and meal skippers. However, the clinical implications of these findings need to be evaluated in future studies.
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Affiliation(s)
- Jannina Viljakainen
- Folkhälsan Research Center, Helsinki, Finland
- Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Sajan C. Raju
- Folkhälsan Research Center, Helsinki, Finland
- Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | - Heli Viljakainen
- Folkhälsan Research Center, Helsinki, Finland
- Department of Food and Nutrition, University of Helsinki, Helsinki, Finland
| | | | - Eva Roos
- Folkhälsan Research Center, Helsinki, Finland
- Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Department of Food and Nutrition, University of Helsinki, Helsinki, Finland
| | - Elisabete Weiderpass
- International Agency for Research on Cancer – World Health Organization, Lyon, France
| | - Trine B. Rounge
- Folkhälsan Research Center, Helsinki, Finland
- Faculty of Medicine, University of Helsinki, Helsinki, Finland
- Department of Research, Cancer Registry of Norway, Oslo, Norway
- Department of Informatics, University of Oslo, Oslo, Norway
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Lewis P, Oster H, Korf HW, Foster RG, Erren TC. Food as a circadian time cue - evidence from human studies. Nat Rev Endocrinol 2020; 16:213-223. [PMID: 32055029 DOI: 10.1038/s41574-020-0318-z] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/06/2020] [Indexed: 12/28/2022]
Abstract
Meal timing and composition are frequently reported in the literature as zeitgebers (that is, time cues) for the circadian system of humans and animal models, albeit secondary to light. Although widely assumed to be true, evidence for food zeitgeber effects specific to humans is notably scarce. Fostering zeitgeber hygiene in the general population as the development and practice of healthy use of zeitgebers could potentially reduce chronobiological strain, which is defined as disruption or misalignment within the circadian system. Such chronobiological strain is associated with modern 24/7 lifestyles (for example, shift work) and several negative health outcomes. Adjustments to meal timing and composition are an attractive strategy to synchronize circadian rhythms and develop zeitgeber hygiene. Thus, clarifying the actual effect of meal timing and composition on the human circadian system is a crucial piece of the human chronobiology puzzle. This Review weighs the evidence from human studies pertaining to the hypothesis that food is a circadian zeitgeber by comparing findings against formal zeitgeber criteria put forward by Jürgen Aschoff in the 1950s.
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Affiliation(s)
- Philip Lewis
- Institute and Policlinic for Occupational Medicine, Environmental Medicine and Prevention Research, University Hospital of Cologne, University of Cologne, Cologne, Germany.
| | - Henrik Oster
- Institute of Neurobiology, University of Lübeck, Lübeck, Germany
| | - Horst W Korf
- Institute of Anatomy I, Medical Faculty, University of Düsseldorf, Düsseldorf, Germany
| | - Russell G Foster
- Sleep and Circadian Neuroscience Institute, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, UK
| | - Thomas C Erren
- Institute and Policlinic for Occupational Medicine, Environmental Medicine and Prevention Research, University Hospital of Cologne, University of Cologne, Cologne, Germany
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Mashaqi S, Gozal D. "Circadian misalignment and the gut microbiome. A bidirectional relationship triggering inflammation and metabolic disorders"- a literature review. Sleep Med 2020; 72:93-108. [PMID: 32559717 DOI: 10.1016/j.sleep.2020.03.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 10/17/2019] [Accepted: 03/16/2020] [Indexed: 02/06/2023]
Abstract
Over the last decade, emerging studies have related the gut microbiome and gut dysbiosis to sleep and sleep disorders. For example, intermittent hypoxia associated with obstructive sleep apnea was shown to reproducibly alter the gut microbiome. Circadian rhythm disorders (CRD) (eg, shift work disorders, delayed sleep phase syndrome, and advanced sleep phase syndrome) constitute another group of conditions that might be influenced by gut dysbiosis. Indeed, both central and peripheral clocks can affect and be affected by gut microbiota and their metabolites. In addition, the tight rhythmic regulation of almost all metabolic pathways involved in the anabolism and catabolism of carbohydrates, protein, and lipids in addition to detoxification processes that take place in specific cells could be ultimately linked to changes in the microbiota. Since there are no studies to date examining the impact of gut dysbiosis on delayed sleep phase and advanced sleep phase syndrome, and considering the ever-increasing number of people engaging in shift work, more accurate and informed delineation of the association between gut dysbiosis and shift work can provide guidance and opportunities for new avenues of treating circadian rhythm disorders and preventing the metabolic complications of shiftwork via restoration of gut dysbiosis. In this review, the potential bidirectional relationships between gut dysbiosis and circadian rhythm misalignment, their impact on different metabolic pathways, and the potential development of metabolic and systemic disorders, especially in shift work models are critically assessed.
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Affiliation(s)
- Saif Mashaqi
- Department of Pulmonary, Critical Care and Sleep Medicine, University of Arizona School of Medicine, Tucson, AZ, USA.
| | - David Gozal
- Department of Child Health and the Child Health Research Institute, University of Missouri School of Medicine, Columbia, MO, USA
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Tiuganji NM, Nehme P, Marqueze EC, Isherwood CM, Martins AJ, Vasconcelos S, Cipolla-Neto J, Lowden A, Skene DJ, Moreno CRC. Eating Behavior (Duration, Content, and Timing) Among Workers Living under Different Levels of Urbanization. Nutrients 2020; 12:E375. [PMID: 32023914 PMCID: PMC7071231 DOI: 10.3390/nu12020375] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/20/2020] [Accepted: 01/24/2020] [Indexed: 01/22/2023] Open
Abstract
Urbanization has contributed to extended wakefulness, which may in turn be associated with eating over a longer period. Here, we present a field study conducted in four groups with different work hours and places of living in order to investigate eating behavior (duration, content, and timing). Anthropometric measures were taken from the participants (rural (n = 22); town (n = 19); city-day workers (n = 11); city-night workers (n = 14)). In addition, a sociodemographic questionnaire was self-answered and 24-h food recalls were applied for three days. The 24-h food recalls revealed that fat intake varied according to the groups, with the highest consumption by the city-day workers. By contrast, city-day workers had the lowest intake of carbohydrate, whereas the rural group had the highest. In general, all groups had some degree of inadequacy in food consumption. Eating duration was negatively correlated with total energy intake, fat, and protein consumption in the rural and town groups. There was a positive correlation between body mass index and eating duration in both city groups. The rural group had the earliest start time of eating, and this was associated with a lower body mass index. This study suggested that food content and timing, as well as eating duration, differed according to place of living, which in turn may be linked to lifestyle.
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Affiliation(s)
- Natalia M. Tiuganji
- School of Public Health, University of São Paulo, 715 Av. Dr. Arnaldo, São Paulo SP 01246-904, Brazil; (N.M.T.); (P.N.); (E.C.M.); (A.J.M.)
| | - Patricia Nehme
- School of Public Health, University of São Paulo, 715 Av. Dr. Arnaldo, São Paulo SP 01246-904, Brazil; (N.M.T.); (P.N.); (E.C.M.); (A.J.M.)
| | - Elaine C. Marqueze
- School of Public Health, University of São Paulo, 715 Av. Dr. Arnaldo, São Paulo SP 01246-904, Brazil; (N.M.T.); (P.N.); (E.C.M.); (A.J.M.)
- Epidemiology, Public Health Graduate Program, Catholic University of Santos, 300 Av. Conselheiro Nébias, Santos SP 11045-003, Brazil
| | - Cheryl M. Isherwood
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UK (D.J.S.)
| | - Andressa J. Martins
- School of Public Health, University of São Paulo, 715 Av. Dr. Arnaldo, São Paulo SP 01246-904, Brazil; (N.M.T.); (P.N.); (E.C.M.); (A.J.M.)
| | - Suleima Vasconcelos
- Department of Health Science and Sports Center, Federal University of Acre, Rodovia BR 364, Km 04–Rio Branco–AC 69920-900, Brazil;
| | - José Cipolla-Neto
- Institute of Biomedical Sciences, University of São Paulo, 1524 Av. Prof. Lineu Prestes, São Paulo SP 05508-000, Brazil;
| | - Arne Lowden
- Stress Research Institute, Department of Psychology, University of Stockholm, SE-106 91 Stockholm, Sweden;
| | - Debra J. Skene
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UK (D.J.S.)
| | - Claudia R. C. Moreno
- School of Public Health, University of São Paulo, 715 Av. Dr. Arnaldo, São Paulo SP 01246-904, Brazil; (N.M.T.); (P.N.); (E.C.M.); (A.J.M.)
- Stress Research Institute, Department of Psychology, University of Stockholm, SE-106 91 Stockholm, Sweden;
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Kessler K, Hornemann S, Rudovich N, Weber D, Grune T, Kramer A, Pfeiffer AFH, Pivovarova-Ramich O. Saliva Samples as A Tool to Study the Effect of Meal Timing on Metabolic And Inflammatory Biomarkers. Nutrients 2020; 12:nu12020340. [PMID: 32013045 PMCID: PMC7071228 DOI: 10.3390/nu12020340] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 01/20/2020] [Accepted: 01/25/2020] [Indexed: 12/13/2022] Open
Abstract
Meal timing affects metabolic regulation in humans. Most studies use blood samples for their investigations. Saliva, although easily available and non-invasive, seems to be rarely used for chrononutritional studies. In this pilot study, we tested if saliva samples could be used to study the effect of timing of carbohydrate and fat intake on metabolic rhythms. In this cross-over trial, 29 nonobese men were randomized to two isocaloric 4-week diets: (1) carbohydrate-rich meals until 13:30 and high-fat meals between 16:30 and 22:00 or (2) the inverse order of meals. Stimulated saliva samples were collected every 4 h for 24 h at the end of each intervention, and levels of hormones and inflammatory biomarkers were assessed in saliva and blood. Cortisol, melatonin, resistin, adiponectin, interleukin-6 and MCP-1 demonstrated distinct diurnal variations, mirroring daytime reports in blood and showing significant correlations with blood levels. The rhythm patterns were similar for both diets, indicating that timing of carbohydrate and fat intake has a minimal effect on metabolic and inflammatory biomarkers in saliva. Our study revealed that saliva is a promising tool for the non-invasive assessment of metabolic rhythms in chrononutritional studies, but standardisation of sample collection is needed in out-of-lab studies.
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Affiliation(s)
- Katharina Kessler
- Department of Clinical Nutrition, German Institute of Human Nutrition Potsdam-Rehbruecke, 14558 Nuthetal, Germany; (K.K.); (S.H.); (N.R.); (A.F.H.P.)
- German Center for Diabetes Research (DZD), 85764 München-Neuherberg, Germany;
- Department of Endocrinology, Diabetes and Nutrition, Campus Benjamin Franklin, Charité University of Medicine, 12203 Berlin, Germany
- Biomineral Research Group, Department of Veterinary Medicine, University of Cambridge, Cambridge CB3 0ES, UK
| | - Silke Hornemann
- Department of Clinical Nutrition, German Institute of Human Nutrition Potsdam-Rehbruecke, 14558 Nuthetal, Germany; (K.K.); (S.H.); (N.R.); (A.F.H.P.)
- German Center for Diabetes Research (DZD), 85764 München-Neuherberg, Germany;
| | - Natalia Rudovich
- Department of Clinical Nutrition, German Institute of Human Nutrition Potsdam-Rehbruecke, 14558 Nuthetal, Germany; (K.K.); (S.H.); (N.R.); (A.F.H.P.)
- German Center for Diabetes Research (DZD), 85764 München-Neuherberg, Germany;
- Department of Endocrinology, Diabetes and Nutrition, Campus Benjamin Franklin, Charité University of Medicine, 12203 Berlin, Germany
- Division of Endocrinology and Diabetes, Department of Internal Medicine, Spital Bülach, 8180 Bülach, Switzerland
| | - Daniela Weber
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558 Nuthetal, Germany;
- NutriAct-Competence Cluster Nutrition Research Berlin-Potsdam, 14558 Nuthetal, Germany
| | - Tilman Grune
- German Center for Diabetes Research (DZD), 85764 München-Neuherberg, Germany;
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558 Nuthetal, Germany;
- NutriAct-Competence Cluster Nutrition Research Berlin-Potsdam, 14558 Nuthetal, Germany
- German Center for Cardiovascular Research (DZHK), 10785 Berlin, Germany
- Institute of Nutrition, University of Potsdam, 14558 Nuthetal, Germany
| | - Achim Kramer
- Laboratory of Chronobiology, Institute for Medical Immunology, Charité University of Medicine, 10117 Berlin, Germany;
| | - Andreas F. H. Pfeiffer
- Department of Clinical Nutrition, German Institute of Human Nutrition Potsdam-Rehbruecke, 14558 Nuthetal, Germany; (K.K.); (S.H.); (N.R.); (A.F.H.P.)
- German Center for Diabetes Research (DZD), 85764 München-Neuherberg, Germany;
- Department of Endocrinology, Diabetes and Nutrition, Campus Benjamin Franklin, Charité University of Medicine, 12203 Berlin, Germany
| | - Olga Pivovarova-Ramich
- Department of Clinical Nutrition, German Institute of Human Nutrition Potsdam-Rehbruecke, 14558 Nuthetal, Germany; (K.K.); (S.H.); (N.R.); (A.F.H.P.)
- German Center for Diabetes Research (DZD), 85764 München-Neuherberg, Germany;
- Department of Endocrinology, Diabetes and Nutrition, Campus Benjamin Franklin, Charité University of Medicine, 12203 Berlin, Germany
- Reseach Group Molecular Nutritional Medicine, Dept. of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke, 14558 Nuthetal, Germany
- Correspondence:
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Frazier K, Chang EB. Intersection of the Gut Microbiome and Circadian Rhythms in Metabolism. Trends Endocrinol Metab 2020; 31:25-36. [PMID: 31677970 PMCID: PMC7308175 DOI: 10.1016/j.tem.2019.08.013] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 08/27/2019] [Accepted: 08/27/2019] [Indexed: 02/06/2023]
Abstract
The gut microbiome and circadian rhythms (CRs) both exhibit unique influence on mammalian hosts and have been implicated in the context of many diseases, particularly metabolic disorders. It has become increasingly apparent that these systems also interact closely to alter host physiology and metabolism. However, the mechanisms that underlie these observations remain largely unknown. Recent findings have implicated microbially derived mediators as potential signals between the gut microbiome and host circadian clocks; two specific mediators are discussed in this review: short-chain fatty acids (SCFAs) and bile acids (BAs). Key gaps in knowledge and major challenges that remain in the circadian and microbiome fields are also discussed, including animal versus human models and the need for precise timed sample collection.
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Affiliation(s)
- Katya Frazier
- Department of Medicine, University of Chicago, Chicago, IL 60637, USA.
| | - Eugene B Chang
- Department of Medicine, University of Chicago, Chicago, IL 60637, USA
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Effect of Diet on the Gut Microbiota: Rethinking Intervention Duration. Nutrients 2019; 11:nu11122862. [PMID: 31766592 PMCID: PMC6950569 DOI: 10.3390/nu11122862] [Citation(s) in RCA: 346] [Impact Index Per Article: 69.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 11/18/2019] [Accepted: 11/20/2019] [Indexed: 12/12/2022] Open
Abstract
The human gut is inhabited by trillions of microorganisms composing a dynamic ecosystem implicated in health and disease. The composition of the gut microbiota is unique to each individual and tends to remain relatively stable throughout life, yet daily transient fluctuations are observed. Diet is a key modifiable factor influencing the composition of the gut microbiota, indicating the potential for therapeutic dietary strategies to manipulate microbial diversity, composition, and stability. While diet can induce a shift in the gut microbiota, these changes appear to be temporary. Whether prolonged dietary changes can induce permanent alterations in the gut microbiota is unknown, mainly due to a lack of long-term human dietary interventions, or long-term follow-ups of short-term dietary interventions. It is possible that habitual diets have a greater influence on the gut microbiota than acute dietary strategies. This review presents the current knowledge around the response of the gut microbiota to short-term and long-term dietary interventions and identifies major factors that contribute to microbiota response to diet. Overall, further research on long-term diets that include health and microbiome measures is required before clinical recommendations can be made for dietary modulation of the gut microbiota for health.
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48
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Lopez-Minguez J, Gómez-Abellán P, Garaulet M. Timing of Breakfast, Lunch, and Dinner. Effects on Obesity and Metabolic Risk. Nutrients 2019; 11:E2624. [PMID: 31684003 PMCID: PMC6893547 DOI: 10.3390/nu11112624] [Citation(s) in RCA: 94] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 10/22/2019] [Accepted: 10/28/2019] [Indexed: 02/06/2023] Open
Abstract
(1) Background: Eating is fundamental to survival. Animals choose when to eat depending on food availability. The timing of eating can synchronize different organs and tissues that are related to food digestion, absorption, or metabolism, such as the stomach, gut, liver, pancreas, or adipose tissue. Studies performed in experimental animal models suggest that food intake is a major external synchronizer of peripheral clocks. Therefore, the timing of eating may be decisive in fat accumulation and mobilization and affect the effectiveness of weight loss treatments. (2) Results: We will review multiple studies about the timing of the three main meals of the day, breakfast, lunch and dinner, and its potential impact on metabolism, glucose tolerance, and obesity-related factors. We will also delve into several mechanisms that may be implicated in the obesogenic effect of eating late. Conclusion: Unusual eating time can produce a disruption in the circadian system that might lead to unhealthy consequences.
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Affiliation(s)
- Jesus Lopez-Minguez
- Department of Physiology, University of Murcia, 30100 Murcia; Spain.
- IMIB-Arrixaca, 30120 Murcia, Spain.
| | | | - Marta Garaulet
- Department of Physiology, University of Murcia, 30100 Murcia; Spain.
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Shaw E, Leung GKW, Jong J, Coates AM, Davis R, Blair M, Huggins CE, Dorrian J, Banks S, Kellow NJ, Bonham MP. The Impact of Time of Day on Energy Expenditure: Implications for Long-Term Energy Balance. Nutrients 2019; 11:E2383. [PMID: 31590425 PMCID: PMC6835928 DOI: 10.3390/nu11102383] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 09/27/2019] [Accepted: 09/28/2019] [Indexed: 12/12/2022] Open
Abstract
There is evidence to indicate that the central biological clock (i.e., our endogenous circadian system) plays a role in physiological processes in the body that impact energy regulation and metabolism. Cross-sectional data suggest that energy consumption later in the day and during the night is associated with weight gain. These findings have led to speculation that when, as well as what, we eat may be important for maintaining energy balance. Emerging literature suggests that prioritising energy intake to earlier during the day may help with body weight maintenance. Evidence from tightly controlled acute experimental studies indicates a disparity in the body's ability to utilise (expend) energy equally across the day and night. Energy expenditure both at rest (resting metabolic rate) and after eating (thermic effect of food) is typically more efficient earlier during the day. In this review, we discuss the key evidence for a circadian pattern in energy utilisation and balance, which depends on meal timing. Whilst there is limited evidence that simply prioritising energy intake to earlier in the day is an effective strategy for weight loss, we highlight the potential benefits of considering the role of meal timing for improving metabolic health and energy balance. This review demonstrates that to advance our understanding of the contribution of the endogenous circadian system toward energy balance, targeted studies that utilise appropriate methodologies are required that focus on meal timing and frequency.
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Affiliation(s)
- Emma Shaw
- Department of Nutrition, Dietetics and Food, Monash University, Melbourne, VIC 3168 Australia.
| | - Gloria K W Leung
- Department of Nutrition, Dietetics and Food, Monash University, Melbourne, VIC 3168 Australia.
| | - Jessica Jong
- Department of Nutrition, Dietetics and Food, Monash University, Melbourne, VIC 3168 Australia.
| | - Alison M Coates
- Alliance for Research in Exercise, Nutrition and Activity (ARENA), School of Health Sciences, University of South Australia, Adelaide, SA 5001, Australia.
- Behaviour-Brain-Body Research Centre, School of Psychology, Social Work and Social Policy, University of South Australia, Adelaide, SA 5072, Australia.
| | - Rochelle Davis
- Department of Nutrition, Dietetics and Food, Monash University, Melbourne, VIC 3168 Australia.
| | - Merran Blair
- Department of Nutrition, Dietetics and Food, Monash University, Melbourne, VIC 3168 Australia.
| | - Catherine E Huggins
- Department of Nutrition, Dietetics and Food, Monash University, Melbourne, VIC 3168 Australia.
| | - Jillian Dorrian
- Behaviour-Brain-Body Research Centre, School of Psychology, Social Work and Social Policy, University of South Australia, Adelaide, SA 5072, Australia.
| | - Siobhan Banks
- Behaviour-Brain-Body Research Centre, School of Psychology, Social Work and Social Policy, University of South Australia, Adelaide, SA 5072, Australia.
| | - Nicole J Kellow
- Department of Nutrition, Dietetics and Food, Monash University, Melbourne, VIC 3168 Australia.
| | - Maxine P Bonham
- Department of Nutrition, Dietetics and Food, Monash University, Melbourne, VIC 3168 Australia.
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50
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Weger BD, Rawashdeh O, Gachon F. At the Intersection of Microbiota and Circadian Clock: Are Sexual Dimorphism and Growth Hormones the Missing Link to Pathology? Bioessays 2019; 41:e1900059. [DOI: 10.1002/bies.201900059] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 06/28/2019] [Indexed: 12/15/2022]
Affiliation(s)
- Benjamin D. Weger
- Institute of Bioengineering, School of Life SciencesEcole Polytechnique Fédérale de LausanneLausanne CH‐1015 Switzerland
| | - Oliver Rawashdeh
- School of Biomedical Science, Faculty of MedicineThe University of QueenslandSt. Lucia QLD‐4072 Australia
| | - Frédéric Gachon
- Institute for Molecular BioscienceThe University of QueenslandSt. Lucia QLD‐4072 Australia
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