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Begemann K, Heyde I, Witt P, Inderhees J, Leinweber B, Koch CE, Jöhren O, Oelkrug R, Liskiewicz A, Müller TD, Oster H. Rest phase snacking increases energy resorption and weight gain in male mice. Mol Metab 2023; 69:101691. [PMID: 36746332 PMCID: PMC9950950 DOI: 10.1016/j.molmet.2023.101691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023] Open
Abstract
OBJECTIVE Snacking, i.e., the intake of small amounts of palatable food items, is a common behavior in modern societies, promoting overeating and obesity. Shifting food intake into the daily rest phase disrupts circadian rhythms and is also known to stimulate weight gain. We therefore hypothesized that chronic snacking in the inactive phase may promote body weight gain and that this effect is based on disruption of circadian clocks. METHODS Male mice were fed a daily chocolate snack either during their rest or their active phase and body weight development and metabolic parameters were investigated. Snacking experiments were repeated in constant darkness and in clock-deficient mutant mice to examine the role of external and internal time cues in mediating the metabolic effects of snacking. RESULTS Chronic snacking in the rest phase increased body weight gain and disrupted metabolic circadian rhythms in energy expenditure, body temperature, and locomotor activity. Additionally, these rest phase snacking mice assimilated more energy during the inactive phase. Body weight remained increased in rest phase snacking wildtype mice in constant darkness as well as in clock-deficient mutant mice under a regular light-dark cycle compared to mice snacking in the active phase. Weight gain effects were abolished in clock-deficient mice in constant darkness. CONCLUSIONS Our data suggest that mistimed snacking increases energy resorption and promotes body weight gain. This effect requires a functional circadian clock at least under constant darkness conditions.
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Affiliation(s)
- Kimberly Begemann
- Institute of Neurobiology, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany; Center of Brain, Behavior, and Metabolism, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany.
| | - Isabel Heyde
- Institute of Neurobiology, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany,Center of Brain, Behavior, and Metabolism, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany
| | - Pia Witt
- Institute of Neurobiology, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany,Center of Brain, Behavior, and Metabolism, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany
| | - Julica Inderhees
- Center of Brain, Behavior, and Metabolism, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany,Bioanalytic Core Facility, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany
| | - Brinja Leinweber
- Institute of Neurobiology, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany,Center of Brain, Behavior, and Metabolism, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany
| | - Christiane E. Koch
- Institute of Neurobiology, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany,Center of Brain, Behavior, and Metabolism, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany
| | - Olaf Jöhren
- Center of Brain, Behavior, and Metabolism, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany,Bioanalytic Core Facility, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany
| | - Rebecca Oelkrug
- Center of Brain, Behavior, and Metabolism, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany,Institute for Endocrinology and Diabetes, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany
| | - Arkadiusz Liskiewicz
- Institute for Diabetes and Obesity, Helmholtz Diabetes Center, Helmholtz Zentrum München, Neuherberg, Germany,Department of Physiology, Faculty of Medical Sciences in Katowice, Medical University of Silesia, Katowice 40-752, Poland
| | - Timo D. Müller
- Institute for Diabetes and Obesity, Helmholtz Diabetes Center, Helmholtz Zentrum München, Neuherberg, Germany,German Center for Diabetes Research (DZD), Neuherberg, Germany
| | - Henrik Oster
- Institute of Neurobiology, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany; Center of Brain, Behavior, and Metabolism, University of Lübeck, Ratzeburger Allee 160, 23562 Lübeck, Germany.
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Trzeciak JR, Steele AD. Studying food entrainment: Models, methods, and musings. Front Nutr 2022; 9:998331. [PMID: 36211505 PMCID: PMC9532691 DOI: 10.3389/fnut.2022.998331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 08/24/2022] [Indexed: 11/28/2022] Open
Abstract
The ability to tell time relative to predictable feeding opportunities has a long history of research, going back more than 100 years with behavioral observations of honeybees and rats. Animals that have access to food at a particular time of day exhibit “food anticipatory activity” (FAA), which is a preprandial increase in activity and arousal thought to be driven by food entrained circadian oscillator(s). However, the mechanisms behind adaptation of behavior to timed feeding continue to elude our grasp. Methods used to study circadian entrainment by food vary depending on the model system and the laboratory conducting the experiments. Most studies have relied on rodent model systems due to neuroanatomical tools and genetic tractability, but even among studies of laboratory mice, methods vary considerably. A lack of consistency within the field in experimental design, reporting, and definition of food entrainment, or even FAA, makes it difficult to compare results across studies or even within the same mutant mouse strain, hindering interpretation of replication studies. Here we examine the conditions used to study food as a time cue and make recommendations for study design and reporting.
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3
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Cornejo MP, Barrile F, Cassano D, Aguggia JP, García Romero G, Reynaldo M, Andreoli MF, De Francesco PN, Perello M. Growth hormone secretagogue receptor in dopamine neurons controls appetitive and consummatory behaviors towards high-fat diet in ad-libitum fed mice. Psychoneuroendocrinology 2020; 119:104718. [PMID: 32535402 DOI: 10.1016/j.psyneuen.2020.104718] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 05/11/2020] [Accepted: 05/12/2020] [Indexed: 01/10/2023]
Abstract
Growth hormone secretagogue receptor (GHSR), the receptor for ghrelin, is expressed in key brain nuclei that regulate food intake. The dopamine (DA) pathways have long been recognized to play key roles mediating GHSR effects on feeding behaviors. Here, we aimed to determine the role of GHSR in DA neurons controlling appetitive and consummatory behaviors towards high fat (HF) diet. For this purpose, we crossed reactivable GHSR-deficient mice with DA transporter (DAT)-Cre mice, which express Cre recombinase under the DAT promoter that is active exclusively in DA neurons, to generate mice with GHSR expression limited to DA neurons (DAT-GHSR mice). We found that DAT-GHSR mice show an increase of c-Fos levels in brain areas containing DA neurons after ghrelin treatment, in a similar fashion as seen in wild-type mice; however, they did not increase food intake or locomotor activity in response to systemically- or centrally-administered ghrelin. In addition, we found that satiated DAT-GHSR mice displayed both anticipatory activity to scheduled HF diet exposure and HF intake in a binge-like eating protocol similar to those in wild-type mice, whereas GHSR-deficient mice displayed impaired responses. We conclude that GHSR expression in DA neurons is sufficient to both mediate increased anticipatory activity to a scheduled HF diet exposure and fully orchestrate binge-like HF intake, but it is insufficient to restore the acute orexigenic or locomotor effects of ghrelin treatment. Thus, GHSR in DA neurons affects appetitive and consummatory behaviors towards HF diet that take place in the absence of caloric needs.
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Affiliation(s)
- María Paula Cornejo
- Laboratory of Neurophysiology of the Multidisciplinary Institute of Cell Biology [IMBICE, Argentine Research Council (CONICET) and Scientific Research Commission, Province of Buenos Aires (CIC-PBA), National University of La Plata], 1900 La Plata, Buenos Aires, Argentina
| | - Franco Barrile
- Laboratory of Neurophysiology of the Multidisciplinary Institute of Cell Biology [IMBICE, Argentine Research Council (CONICET) and Scientific Research Commission, Province of Buenos Aires (CIC-PBA), National University of La Plata], 1900 La Plata, Buenos Aires, Argentina
| | - Daniela Cassano
- Laboratory of Neurophysiology of the Multidisciplinary Institute of Cell Biology [IMBICE, Argentine Research Council (CONICET) and Scientific Research Commission, Province of Buenos Aires (CIC-PBA), National University of La Plata], 1900 La Plata, Buenos Aires, Argentina
| | - Julieta Paola Aguggia
- Laboratory of Neurophysiology of the Multidisciplinary Institute of Cell Biology [IMBICE, Argentine Research Council (CONICET) and Scientific Research Commission, Province of Buenos Aires (CIC-PBA), National University of La Plata], 1900 La Plata, Buenos Aires, Argentina
| | - Guadalupe García Romero
- Laboratory of Neurophysiology of the Multidisciplinary Institute of Cell Biology [IMBICE, Argentine Research Council (CONICET) and Scientific Research Commission, Province of Buenos Aires (CIC-PBA), National University of La Plata], 1900 La Plata, Buenos Aires, Argentina
| | - Mirta Reynaldo
- Laboratory of Neurophysiology of the Multidisciplinary Institute of Cell Biology [IMBICE, Argentine Research Council (CONICET) and Scientific Research Commission, Province of Buenos Aires (CIC-PBA), National University of La Plata], 1900 La Plata, Buenos Aires, Argentina
| | - María Florencia Andreoli
- Laboratory of Experimental Neurodevelopment, Institute of Development and Pediatric Research (IDIP), La Plata Children's Hospital and Scientific Research Commission, Province of Buenos Aires (CIC-PBA)], La Plata, Buenos Aires, Argentina
| | - Pablo Nicolás De Francesco
- Laboratory of Neurophysiology of the Multidisciplinary Institute of Cell Biology [IMBICE, Argentine Research Council (CONICET) and Scientific Research Commission, Province of Buenos Aires (CIC-PBA), National University of La Plata], 1900 La Plata, Buenos Aires, Argentina
| | - Mario Perello
- Laboratory of Neurophysiology of the Multidisciplinary Institute of Cell Biology [IMBICE, Argentine Research Council (CONICET) and Scientific Research Commission, Province of Buenos Aires (CIC-PBA), National University of La Plata], 1900 La Plata, Buenos Aires, Argentina.
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4
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Escobar C, Espitia-Bautista E, Guzmán-Ruiz MA, Guerrero-Vargas NN, Hernández-Navarrete MÁ, Ángeles-Castellanos M, Morales-Pérez B, Buijs RM. Chocolate for breakfast prevents circadian desynchrony in experimental models of jet-lag and shift-work. Sci Rep 2020; 10:6243. [PMID: 32277140 PMCID: PMC7148329 DOI: 10.1038/s41598-020-63227-w] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 03/18/2020] [Indexed: 12/27/2022] Open
Abstract
Night-workers, transcontinental travelers and individuals that regularly shift their sleep timing, suffer from circadian desynchrony and are at risk to develop metabolic disease, cancer, and mood disorders, among others. Experimental and clinical studies provide evidence that food intake restricted to the normal activity phase is a potent synchronizer for the circadian system and can prevent the detrimental metabolic effects associated with circadian disruption. As an alternative, we hypothesized that a timed piece of chocolate scheduled to the onset of the activity phase may be sufficient stimulus to synchronize circadian rhythms under conditions of shift-work or jet-lag. In Wistar rats, a daily piece of chocolate coupled to the onset of the active phase (breakfast) accelerated re-entrainment in a jet-lag model by setting the activity of the suprachiasmatic nucleus (SCN) to the new cycle. Furthermore, in a rat model of shift-work, a piece of chocolate for breakfast prevented circadian desynchrony, by increasing the amplitude of the day-night c-Fos activation in the SCN. Contrasting, chocolate for dinner prevented re-entrainment in the jet-lag condition and favored circadian desynchrony in the shift-work models. Moreover, chocolate for breakfast resulted in low body weight gain while chocolate for dinner boosted up body weight. Present data evidence the relevance of the timing of a highly caloric and palatable meal for circadian synchrony and metabolic function.
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Affiliation(s)
- Carolina Escobar
- Departamento de Anatomía, Facultad de Medicina, UNAM, Mexico City, Mexico.
| | | | - Mara A Guzmán-Ruiz
- Departamento de Fisiología, Facultad de Medicina, UNAM, Mexico City, Mexico
| | | | | | | | | | - Ruud M Buijs
- Instituto de Investigaciones Biomédicas, UNAM, Mexico City, Mexico
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5
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Ahloy-Dallaire J, Klein JD, Davis JK, Garner JP. Automated monitoring of mouse feeding and body weight for continuous health assessment. Lab Anim 2018; 53:342-351. [PMID: 30286683 DOI: 10.1177/0023677218797974] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Routine health assessment of laboratory rodents can be improved using automated home cage monitoring. Continuous, non-stressful, objective assessment of rodents unaware that they are being watched, including during their active dark period, reveals behavioural and physiological changes otherwise invisible to human caretakers. We developed an automated feeder that tracks feed intake, body weight, and physical appearance of individual radio frequency identification-tagged mice in social home cages. Here, we experimentally induce illness via lipopolysaccharide challenge and show that this automated tracking apparatus reveals sickness behaviour (reduced food intake) as early as 2-4 hours after lipopolysaccharide injection, whereas human observers conducting routine health checks fail to detect a significant difference between sick mice and saline-injected controls. Continuous automated monitoring additionally reveals pronounced circadian rhythms in both feed intake and body weight. Automated home cage monitoring is a non-invasive, reliable mode of health surveillance allowing caretakers to more efficiently detect and respond to early signs of illness in laboratory rodent populations.
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Affiliation(s)
| | - Jon D Klein
- 2 Department of Animal Sciences, Purdue University, United States
| | - Jerry K Davis
- 3 Department of Comparative Pathobiology, Purdue University, United States
| | - Joseph P Garner
- 1 Department of Comparative Medicine, Stanford University, United States.,4 Department of Psychiatry and Behavioral Sciences, Stanford University, United States
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6
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Crew RC, Waddell BJ, Maloney SK, Mark PJ. Diet-induced obesity reduces core body temperature across the estrous cycle and pregnancy in the rat. Chronobiol Int 2018; 35:1077-1087. [PMID: 29659304 DOI: 10.1080/07420528.2018.1458035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Obesity during pregnancy causes adverse maternal and fetal health outcomes and programs offspring for adult-onset diseases, including cardiovascular disease. Obesity also disrupts core body temperature (Tc) regulation in nonpregnant rodents; however, it is unknown whether obesity alters normal maternal Tc adaptations to pregnancy. Since Tc is influenced by the circadian system, and both obesity and pregnancy alter circadian biology, it was hypothesized that obesity disrupts the normal rhythmic patterns of Tc before and during gestation. Obesity was induced by cafeteria (CAF) feeding in female Wistar rats for 8 weeks prior to and during gestation, whereas control (CON) animals had free access to chow. Intraperitoneal temperature loggers measured daily Tc profiles throughout the study, while maternal body composition and leptin levels were assessed near term. Daily temperature profiles were examined for rhythmic features (mesor, amplitude and acrophase) by cosine regression analysis. CAF animals exhibited increased fat mass (93%) and associated hyperleptinemia (3.2-fold increase) compared to CON animals. CAF consumption reduced the average Tc (by up to 0.29°C) across the estrous cycle and most of pregnancy; however, Tc for CAF and CON animals converged toward the end of gestation. Obesity reduced the amplitude of Tc rhythms at estrus and proestrus and on day 8 of pregnancy, but increased the amplitude at day 20 of pregnancy. Photoperiod analysis revealed that obesity reduced Tc exclusively in the light period during pre-pregnancy but only during the dark period in late gestation. In conclusion, obesity alters rhythmic Tc profiles and reduces the magnitude of the Tc decline late in rat gestation, which may have implications for maternal health and fetal development.
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Affiliation(s)
- Rachael C Crew
- a School of Human Sciences , The University of Western Australia , Perth , Australia
| | - Brendan J Waddell
- a School of Human Sciences , The University of Western Australia , Perth , Australia
| | - Shane K Maloney
- a School of Human Sciences , The University of Western Australia , Perth , Australia
| | - Peter J Mark
- a School of Human Sciences , The University of Western Australia , Perth , Australia
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Brain Activity during Methamphetamine Anticipation in a Non-Invasive Self-Administration Paradigm in Mice. eNeuro 2018; 5:eN-NWR-0433-17. [PMID: 29632871 PMCID: PMC5889482 DOI: 10.1523/eneuro.0433-17.2018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 02/14/2018] [Accepted: 02/21/2018] [Indexed: 12/13/2022] Open
Abstract
The ability to sense time and anticipate events is critical for survival. Learned responses that allow anticipation of the availability of food or water have been intensively studied. While anticipatory behaviors also occur prior to availability of regularly available rewards, there has been relatively little work on anticipation of drugs of abuse, specifically methamphetamine (MA). In the present study, we used a protocol that avoided possible CNS effects of stresses of handling or surgery by testing anticipation of MA availability in animals living in their home cages, with daily voluntary access to the drug at a fixed time of day. Anticipation was operationalized as the amount of wheel running prior to MA availability. Mice were divided into four groups given access to either nebulized MA or water, in early or late day. Animals with access to MA, but not water controls, showed anticipatory activity, with more anticipation in early compared to late day and significant interaction effects. Next, we explored the neural basis of the MA anticipation, using c-FOS expression, in animals euthanized at the usual time of nebulization access. In the dorsomedial hypothalamus (DMH) and orbitofrontal cortex (OFC), the pattern of c-FOS expression paralleled that of anticipatory behavior, with significant main and interaction effects of treatment and time of day. The results for the lateral septum (LS) were significant for main effects and marginally significant for interaction effects. These studies suggest that anticipation of MA is associated with activation of brain regions important in circadian timing, emotional regulation, and decision making.
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8
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Neural Mechanisms of Circadian Regulation of Natural and Drug Reward. Neural Plast 2017; 2017:5720842. [PMID: 29359051 PMCID: PMC5735684 DOI: 10.1155/2017/5720842] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 09/07/2017] [Accepted: 10/11/2017] [Indexed: 01/26/2023] Open
Abstract
Circadian rhythms are endogenously generated near 24-hour variations of physiological and behavioral functions. In humans, disruptions to the circadian system are associated with negative health outcomes, including metabolic, immune, and psychiatric diseases, such as addiction. Animal models suggest bidirectional relationships between the circadian system and drugs of abuse, whereby desynchrony, misalignment, or disruption may promote vulnerability to drug use and the transition to addiction, while exposure to drugs of abuse may entrain, disrupt, or perturb the circadian timing system. Recent evidence suggests natural (i.e., food) and drug rewards may influence overlapping neural circuitry, and the circadian system may modulate the physiological and behavioral responses to these stimuli. Environmental disruptions, such as shifting schedules or shorter/longer days, influence food and drug intake, and certain mutations of circadian genes that control cellular rhythms are associated with altered behavioral reward. We highlight the more recent findings associating circadian rhythms to reward function, linking environmental and genetic evidence to natural and drug reward and related neural circuitry.
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9
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Rosa DF, Sarandy MM, Novaes RD, da Matta SLP, Gonçalves RV. Effect of a high-fat diet and alcohol on cutaneous repair: A systematic review of murine experimental models. PLoS One 2017; 12:e0176240. [PMID: 28493875 PMCID: PMC5426595 DOI: 10.1371/journal.pone.0176240] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 03/07/2017] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND AND PURPOSE Chronic alcohol intake associated with an inappropriate diet can cause lesions in multiple organs and tissues and complicate the tissue repair process. In a systematic review, we analyzed the relevance of alcohol and high fat consumption to cutaneous and repair, compared the main methodologies used and the most important parameters tested. Preclinical investigations with murine models were assessed to analyze whether the current evidence support clinical trials. METHODS The studies were selected from MEDLINE/PubMed and Scopus databases, according to Fig 1. All 15 identified articles had their data extracted. The reporting bias was investigated according to the ARRIVE (Animal Research: Reporting of in Vivo Experiments) strategy. RESULTS In general, animals offered a high-fat diet and alcohol showed decreased cutaneous wound closure, delayed skin contraction, chronic inflammation and incomplete re-epithelialization. CONCLUSION In further studies, standardized experimental design is needed to establish comparable study groups and advance the overall knowledge background, facilitating data translatability from animal models to human clinical conditions.
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Affiliation(s)
- Daiane Figueiredo Rosa
- Department of General Biology, Federal University of Viçosa, Viçosa, Minas Gerais, Brazil
| | | | - Rômulo Dias Novaes
- Department of Cell, Tissue and Developmental Biology, Federal University of Alfenas, Alfenas, Minas Gerais, Brazil
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Blancas-Velazquez A, Mendoza J, Garcia AN, la Fleur SE. Diet-Induced Obesity and Circadian Disruption of Feeding Behavior. Front Neurosci 2017; 11:23. [PMID: 28223912 PMCID: PMC5293780 DOI: 10.3389/fnins.2017.00023] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 01/12/2017] [Indexed: 12/13/2022] Open
Abstract
Feeding behavior shows a rhythmic daily pattern, which in nocturnal rodents is observed mainly during the dark period. This rhythmicity is under the influence of the hypothalamic suprachiasmatic nucleus (SCN), the main biological clock. Nevertheless, various studies have shown that in rodent models of obesity, using high-energy diets, the general locomotor activity and feeding rhythms can be disrupted. Here, we review the data on the effects of diet-induced obesity (DIO) on locomotor activity and feeding patterns, as well as the effect on the brain sites within the neural circuitry involved in metabolic and rewarding feeding behavior. In general, DIO may alter locomotor activity by decreasing total activity. On the other hand, DIO largely alters eating patterns, producing increased overall ingestion and number of eating bouts that can extend to the resting period. Furthermore, within the hypothalamic areas, little effect has been reported on the molecular circadian mechanism in DIO animals with ad libitum hypercaloric diets and little or no data exist so far on its effects on the reward system areas. We further discuss the possibility of an uncoupling of metabolic and reward systems in DIO and highlight a gap of circadian and metabolic research that may help to better understand the implications of obesity.
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Affiliation(s)
- Aurea Blancas-Velazquez
- Institute of Cellular and Integrative Neurosciences, Centre National de la Recherche Scientifique UPR-3212, University of StrasbourgStrasbourg, France; Department of Endocrinology and Metabolism, Academic Medical Center, University of AmsterdamAmsterdam, Netherlands; Metabolism and Reward Group, Netherlands Institute for NeuroscienceAmsterdam, Netherlands
| | - Jorge Mendoza
- Institute of Cellular and Integrative Neurosciences, Centre National de la Recherche Scientifique UPR-3212, University of Strasbourg Strasbourg, France
| | - Alexandra N Garcia
- Department of Endocrinology and Metabolism, Academic Medical Center, University of AmsterdamAmsterdam, Netherlands; Metabolism and Reward Group, Netherlands Institute for NeuroscienceAmsterdam, Netherlands
| | - Susanne E la Fleur
- Department of Endocrinology and Metabolism, Academic Medical Center, University of AmsterdamAmsterdam, Netherlands; Metabolism and Reward Group, Netherlands Institute for NeuroscienceAmsterdam, Netherlands
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11
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Hume C, Jachs B, Menzies J. Homeostatic responses to palatable food consumption in satiated rats. Obesity (Silver Spring) 2016; 24:2126-32. [PMID: 27543760 PMCID: PMC5096006 DOI: 10.1002/oby.21606] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Revised: 06/20/2016] [Accepted: 06/20/2016] [Indexed: 12/23/2022]
Abstract
OBJECTIVE Energy intake is regulated by overlapping homeostatic and hedonic systems. Consumption of palatable foods has been implicated in weight gain, but this assumes that homeostatic control systems do not accurately detect this hedonically driven energy intake. This study tested this assumption, hypothesizing that satiated rats would reduce their voluntary food intake and maintain a stable body weight after consuming a palatable food. METHODS Lean rats or rats previously exposed to an obesogenic diet were schedule-fed with fixed or varying amounts of palatable sweetened condensed milk (SCM) daily, and their voluntary energy intake and body weight were monitored. RESULTS During scheduled feeding of SCM, rats voluntarily reduced bland food consumption and maintained a stable body weight. This behavior was also seen in rats with access to an obesogenic diet and was independent of the predictability of SCM access. However, lean rats offered large amounts of SCM showed an increase in total energy intake. To test whether a nutrient deficiency drove this under-compensatory behavior, SCM was enriched with protein. However, no effect was seen on voluntary energy intake. CONCLUSIONS In schedule-fed rats, compensatory reductions in voluntary energy intake were seen, but under-compensation was observed if large amounts of SCM were consumed.
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Affiliation(s)
- Catherine Hume
- Centre for Integrative Physiology, School of Biomedical Sciences, University of Edinburgh, Edinburgh, UK
| | - Barbara Jachs
- Centre for Integrative Physiology, School of Biomedical Sciences, University of Edinburgh, Edinburgh, UK
| | - John Menzies
- Centre for Integrative Physiology, School of Biomedical Sciences, University of Edinburgh, Edinburgh, UK.
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12
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Namvar S, Gyte A, Denn M, Leighton B, Piggins HD. Dietary fat and corticosterone levels are contributing factors to meal anticipation. Am J Physiol Regul Integr Comp Physiol 2016; 310:R711-23. [PMID: 26818054 PMCID: PMC4867411 DOI: 10.1152/ajpregu.00308.2015] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Accepted: 01/22/2016] [Indexed: 11/22/2022]
Abstract
Daily restricted access to food leads to the development of food anticipatory activity and metabolism, which depends upon an as yet unidentified food-entrainable oscillator(s). A premeal anticipatory peak in circulating hormones, including corticosterone is also elicited by daily restricted feeding. High-fat feeding is associated with elevated levels of corticosterone with disrupted circadian rhythms and a failure to develop robust meal anticipation. It is not clear whether the disrupted corticosterone rhythm, resulting from high-fat feeding contributes to attenuated meal anticipation in high-fat fed rats. Our aim was to better characterize meal anticipation in rats fed a low- or high-fat diet, and to better understand the role of corticosterone in this process. To this end, we utilized behavioral observations, hypothalamic c-Fos expression, and indirect calorimetry to assess meal entrainment. We also used the glucocorticoid receptor antagonist, RU486, to dissect out the role of corticosterone in meal anticipation in rats given daily access to a meal with different fat content. Restricted access to a low-fat diet led to robust meal anticipation, as well as entrainment of hypothalamic c-Fos expression, metabolism, and circulating corticosterone. These measures were significantly attenuated in response to a high-fat diet, and animals on this diet exhibited a postanticipatory rise in corticosterone. Interestingly, antagonism of glucocorticoid activity using RU486 attenuated meal anticipation in low-fat fed rats, but promoted meal anticipation in high-fat-fed rats. These findings suggest an important role for corticosterone in the regulation of meal anticipation in a manner dependent upon dietary fat content.
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Affiliation(s)
- Sara Namvar
- Faculty of Life Sciences, University of Manchester, Manchester, United Kingdom; and
| | - Amy Gyte
- AstraZeneca Research and Development, Mereside, Alderley Park, Macclesfield, United Kingdom
| | - Mark Denn
- AstraZeneca Research and Development, Mereside, Alderley Park, Macclesfield, United Kingdom
| | - Brendan Leighton
- AstraZeneca Research and Development, Mereside, Alderley Park, Macclesfield, United Kingdom
| | - Hugh D Piggins
- Faculty of Life Sciences, University of Manchester, Manchester, United Kingdom; and
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Li Z, Wang Y, Sun KK, Wang K, Sun ZS, Zhao M, Wang J. Sex-related difference in food-anticipatory activity of mice. Horm Behav 2015; 70:38-46. [PMID: 25736535 DOI: 10.1016/j.yhbeh.2015.02.004] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 02/13/2015] [Accepted: 02/18/2015] [Indexed: 12/30/2022]
Abstract
The expression of food-anticipatory activity (FAA) is induced by restricted feeding (RF), and its entrainment requires food-entrainable oscillators, the neuroanatomical basis of which is currently unclear. Although RF impacts various hormones, sex-related differences in FAA are unclear. 'Here, we report significantly more food-anticipatory wheel-running activity in male than in female mice during RF. In parallel with the sex-related difference in FAA, male and female mice display different food intake and body weight in response to RF. Since gonadal hormones could be involved in the sex-specific difference in FAA, we compared sham and gonadectomized male and female wild-type mice. In gonadectomized mice, the sex difference in FAA was abolished, indicating a role for gonadal hormones in FAA. Further, plasma concentrations of the hormone ghrelin were higher in female than in male mice during ad libitum (AL) feeding, and RF induced a temporal advance in its peak in both sexes. RF also shifted the expression peak of the circadian gene mPer1 in the hippocampus and liver, although no sex difference was found in either the level or the cyclic phase of its expression. Per1(Brdm1) mutant mice were still sexually dimorphic for FAA, but diminished FAA was noted in both male and female Per2(Brdm1) mutant mice. In summary, our results imply that gonadal hormones contribute to the sex difference in FAA, possibly through modulating ghrelin activity.
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Affiliation(s)
- Zhigang Li
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Medicine, Shanxi Agricultural University, Taigu 030801, China; Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing 100101, China
| | - Yan Wang
- Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing 100101, China
| | | | - Kangli Wang
- Institute of Genomic Medicine, Wenzhou Medical College, Wenzhou 325000, China
| | - Zhong Sheng Sun
- Beijing Institutes of Life Science, Chinese Academy of Sciences, Beijing 100101, China; Institute of Genomic Medicine, Wenzhou Medical College, Wenzhou 325000, China.
| | - Mei Zhao
- Institute of Psychology, Chinese Academy of Sciences, Beijing 100101, China.
| | - Jundong Wang
- Shanxi Key Laboratory of Ecological Animal Science and Environmental Medicine, Shanxi Agricultural University, Taigu 030801, China.
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14
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Blancas A, González-García S, Rodríguez K, Escobar C. Progressive anticipation in behavior and brain activation of rats exposed to scheduled daily palatable food. Neuroscience 2014; 281:44-53. [DOI: 10.1016/j.neuroscience.2014.09.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Revised: 09/11/2014] [Accepted: 09/12/2014] [Indexed: 01/09/2023]
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15
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Gallardo CM, Darvas M, Oviatt M, Chang CH, Michalik M, Huddy TF, Meyer EE, Shuster SA, Aguayo A, Hill EM, Kiani K, Ikpeazu J, Martinez JS, Purpura M, Smit AN, Patton DF, Mistlberger RE, Palmiter RD, Steele AD. Dopamine receptor 1 neurons in the dorsal striatum regulate food anticipatory circadian activity rhythms in mice. eLife 2014; 3:e03781. [PMID: 25217530 PMCID: PMC4196120 DOI: 10.7554/elife.03781] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Accepted: 09/10/2014] [Indexed: 12/23/2022] Open
Abstract
Daily rhythms of food anticipatory activity (FAA) are regulated independently of the suprachiasmatic nucleus, which mediates entrainment of rhythms to light, but the neural circuits that establish FAA remain elusive. In this study, we show that mice lacking the dopamine D1 receptor (D1R KO mice) manifest greatly reduced FAA, whereas mice lacking the dopamine D2 receptor have normal FAA. To determine where dopamine exerts its effect, we limited expression of dopamine signaling to the dorsal striatum of dopamine-deficient mice; these mice developed FAA. Within the dorsal striatum, the daily rhythm of clock gene period2 expression was markedly suppressed in D1R KO mice. Pharmacological activation of D1R at the same time daily was sufficient to establish anticipatory activity in wild-type mice. These results demonstrate that dopamine signaling to D1R-expressing neurons in the dorsal striatum plays an important role in manifestation of FAA, possibly by synchronizing circadian oscillators that modulate motivational processes and behavioral output.
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Affiliation(s)
- Christian M Gallardo
- Division of Biology, California Institute of Technology, Pasadena, United States
| | - Martin Darvas
- Department of Pathology, University of Washington, Seattle, United States
| | - Mia Oviatt
- Division of Biology, California Institute of Technology, Pasadena, United States
| | - Chris H Chang
- W M Keck Science Department, Claremont McKenna, Pitzer and Scripps Colleges, Claremont, United States
| | - Mateusz Michalik
- Department of Psychology, Simon Fraser University, Burnaby, Canada
| | - Timothy F Huddy
- Biological Sciences Department, California State Polytechnic University Pomona, Pomona, United States
| | - Emily E Meyer
- W M Keck Science Department, Claremont McKenna, Pitzer and Scripps Colleges, Claremont, United States
| | - Scott A Shuster
- Division of Biology, California Institute of Technology, Pasadena, United States
| | - Antonio Aguayo
- Biological Sciences Department, California State Polytechnic University Pomona, Pomona, United States
| | - Elizabeth M Hill
- Biological Sciences Department, California State Polytechnic University Pomona, Pomona, United States
| | - Karun Kiani
- W M Keck Science Department, Claremont McKenna, Pitzer and Scripps Colleges, Claremont, United States
| | - Jonathan Ikpeazu
- Division of Biology, California Institute of Technology, Pasadena, United States
| | - Johan S Martinez
- Division of Biology, California Institute of Technology, Pasadena, United States
| | - Mari Purpura
- W M Keck Science Department, Claremont McKenna, Pitzer and Scripps Colleges, Claremont, United States
| | - Andrea N Smit
- Department of Psychology, Simon Fraser University, Burnaby, Canada
| | - Danica F Patton
- Department of Psychology, Simon Fraser University, Burnaby, Canada
| | | | - Richard D Palmiter
- Department of Biochemistry, Howard Hughes Medical Institute, University of Washington, Seattle, United States
| | - Andrew D Steele
- Division of Biology, California Institute of Technology, Pasadena, United States
- Biological Sciences Department, California State Polytechnic University Pomona, Pomona, United States
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16
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Bake T, Murphy M, Morgan DGA, Mercer JG. Large, binge-type meals of high fat diet change feeding behaviour and entrain food anticipatory activity in mice. Appetite 2014; 77:60-71. [PMID: 24631639 PMCID: PMC4152876 DOI: 10.1016/j.appet.2014.02.020] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Revised: 02/26/2014] [Accepted: 02/28/2014] [Indexed: 11/06/2022]
Abstract
Male C57BL/6 mice fed ad libitum on control diet but allowed access to a palatable high fat diet (HFD) for 2 h a day during the mid-dark phase rapidly adapt their feeding behaviour and can consume nearly 80% of their daily caloric intake during this 2 h-scheduled feed. We assessed food intake microstructure and meal pattern, and locomotor activity and rearing as markers of food anticipatory activity (FAA). Schedule fed mice reduced their caloric intake from control diet during the first hours of the dark phase but not during the 3-h period immediately preceding the scheduled feed. Large meal/binge-like eating behaviour during the 2-h scheduled feed was characterised by increases in both meal number and meal size. Rearing was increased during the 2-h period running up to scheduled feeding while locomotor activity started to increase 1 h before, indicating that schedule-fed mice display FAA. Meal number and physical activity changes were sustained when HFD was withheld during the anticipated scheduled feeding period, and mice immediately binged when HFD was represented after a week of this "withdrawal" period. These findings provide important context to our previous studies suggesting that energy balance systems in the hypothalamus are not responsible for driving these large, binge-type meals. Evidence of FAA in HFD dark phase schedule-fed mice implicates anticipatory processes in binge eating that do not involve immediately preceding hypophagia or regulatory homeostatic signalling.
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Affiliation(s)
- T Bake
- University of Aberdeen, Rowett Institute of Nutrition and Health, Ingestive Behaviour Group, Bucksburn, Aberdeen, UK
| | - M Murphy
- University of Aberdeen, Rowett Institute of Nutrition and Health, Ingestive Behaviour Group, Bucksburn, Aberdeen, UK
| | - D G A Morgan
- AstraZeneca, Mereside, Alderley Park, Macclesfield, UK
| | - J G Mercer
- University of Aberdeen, Rowett Institute of Nutrition and Health, Ingestive Behaviour Group, Bucksburn, Aberdeen, UK.
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17
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Gallardo CM, Hsu CT, Gunapala KM, Parfyonov M, Chang CH, Mistlberger RE, Steele AD. Behavioral and neural correlates of acute and scheduled hunger in C57BL/6 mice. PLoS One 2014; 9:e95990. [PMID: 24806659 PMCID: PMC4012955 DOI: 10.1371/journal.pone.0095990] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Accepted: 04/01/2014] [Indexed: 01/11/2023] Open
Abstract
In rodents, daily feeding schedules induce food anticipatory activity (FAA) rhythms with formal properties suggesting mediation by food-entrained circadian oscillators (FEOs). The search for the neuronal substrate of FEOs responsible for FAA is an active area of research, but studies spanning several decades have yet to identify unequivocally a brain region required for FAA. Variability of results across studies leads to questions about underlying biology versus methodology. Here we describe in C57BL/6 male mice the effects of varying the ‘dose’ of caloric restriction (0%, 60%, 80%, 110%) on the expression of FAA as measured by a video-based analysis system, and on the induction of c-Fos in brain regions that have been implicated in FAA. We determined that more severe caloric restriction (60%) leads to a faster onset of FAA with increased magnitude. Using the 60% caloric restriction, we found little evidence for unique signatures of neuronal activation in the brains of mice anticipating a daily mealtime compared to mice that were fasted acutely or fed ad-libitum–even in regions such as the dorsomedial and ventrolateral hypothalamus, nucleus accumbens, and cerebellum that have previously been implicated in FAA. These results underscore the importance of feeding schedule parameters in determining quantitative features of FAA in mice, and demonstrate dissociations between behavioral FAA and neural activity in brain areas thought to harbor FEOs or participate in their entrainment or output.
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Affiliation(s)
- Christian M. Gallardo
- Division of Biology, California Institute of Technology, Pasadena, California, United States of America
| | - Cynthia T. Hsu
- Division of Biology, California Institute of Technology, Pasadena, California, United States of America
| | - Keith M. Gunapala
- Division of Biology, California Institute of Technology, Pasadena, California, United States of America
| | - Maksim Parfyonov
- Department of Psychology, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Chris H. Chang
- W.M. Keck Science Department, Claremont McKenna College, Pitzer College, Scripps College, Claremont, California, United States of America
| | - Ralph E. Mistlberger
- Department of Psychology, Simon Fraser University, Burnaby, British Columbia, Canada
| | - Andrew D. Steele
- Division of Biology, California Institute of Technology, Pasadena, California, United States of America
- Biological Sciences Department, California State Polytechnic University Pomona, Pomona, California, United States of America
- * E-mail:
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18
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Smith CM, Chua BE, Zhang C, Walker AW, Haidar M, Hawkes D, Shabanpoor F, Hossain MA, Wade JD, Rosengren KJ, Gundlach AL. Central injection of relaxin-3 receptor (RXFP3) antagonist peptides reduces motivated food seeking and consumption in C57BL/6J mice. Behav Brain Res 2014; 268:117-26. [PMID: 24681162 DOI: 10.1016/j.bbr.2014.03.037] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2014] [Revised: 03/17/2014] [Accepted: 03/18/2014] [Indexed: 01/10/2023]
Abstract
Behavioural arousal in mammals is regulated by various interacting central monoamine- and peptide-neurotransmitter/receptor systems, which function to maintain awake, alert and active states required for performance of goal-directed activities essential for survival, including food seeking. Existing anatomical and functional evidence suggests the highly-conserved neuropeptide, relaxin-3, which signals via its cognate Gi/o-protein coupled receptor, RXFP3, contributes to behavioural arousal and feeding behaviour in rodents. In studies to investigate this possibility further, adult male C57BL/6J mice were treated with the selective RXFP3 antagonist peptides, R3(B1-22)R/I5(A) and R3(B1-22)R, and motivated food seeking and consumption was assessed as a reflective output of behavioural arousal. Compared to vehicle treatment, intracerebroventricular (icv) injection of RXFP3 antagonists reduced: (i) food anticipatory activity before meal time during food restriction; (ii) consumption of highly palatable food; (iii) consumption of regular chow during the initial dark phase, and; (iv) consumption of regular chow after mild (∼4-h) food deprivation. Effects were not due to sedation and appeared to be specifically mediated via antagonism of relaxin-3/RXFP3 signalling, as RXFP3 antagonist treatment did not alter locomotor activity in wild-type mice or reduce palatable food intake in relaxin-3 deficient (knock-out) mice. Notably, in contrast to similar studies in the rat, icv injection of RXFP3 agonists and infusion into the paraventricular hypothalamic nucleus did not increase food consumption in mice, suggesting species differences in relaxin-3/RXFP3-related signalling networks. Together, our data provide evidence that endogenous relaxin-3/RXFP3 signalling promotes motivated food seeking and consumption, and in light of the established biological and translational importance of other arousal systems, relaxin-3/RXFP3 networks warrant further experimental investigation.
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Affiliation(s)
- Craig M Smith
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia; Florey Department of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia
| | - Berenice E Chua
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia
| | - Cary Zhang
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia; Florey Department of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia
| | - Andrew W Walker
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia; Florey Department of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia
| | - Mouna Haidar
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia; Florey Department of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia
| | - David Hawkes
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia
| | - Fazel Shabanpoor
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia
| | - Mohammad Akhter Hossain
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia; Florey Department of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia; School of Chemistry, The University of Melbourne, Melbourne, VIC, Australia
| | - John D Wade
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia; Florey Department of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia; School of Chemistry, The University of Melbourne, Melbourne, VIC, Australia
| | - K Johan Rosengren
- School of Biomedical Sciences, The University of Queensland, Brisbane, QLD, Australia
| | - Andrew L Gundlach
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia; Florey Department of Neuroscience and Mental Health, The University of Melbourne, Melbourne, VIC, Australia; Department of Anatomy and Neuroscience, The University of Melbourne, Melbourne, VIC, Australia.
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19
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Tahara Y, Shibata S. Chrono-biology, chrono-pharmacology, and chrono-nutrition. J Pharmacol Sci 2014; 124:320-35. [PMID: 24572815 DOI: 10.1254/jphs.13r06cr] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The circadian clock system in mammals drives many physiological processes including the daily rhythms of sleep-wake behavior, hormonal secretion, and metabolism. This system responds to daily environmental changes, such as the light-dark cycle, food intake, and drug administration. In this review, we focus on the central and peripheral circadian clock systems in response to drugs, food, and nutrition. We also discuss the adaptation and anticipation mechanisms of our body with regard to clock system regulation of various kinetic and dynamic pathways, including absorption, distribution, metabolism, and excretion of drugs and nutrients. "Chrono-pharmacology" and "chrono-nutrition" are likely to become important research fields in chrono-biological studies.
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Affiliation(s)
- Yu Tahara
- Laboratory of Physiology and Pharmacology, School of Advanced Science and Engineering, Waseda University, Japan
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20
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Tsushima H, Yamada K, Miyazawa D, Mori M, Hashimoto Y, Ohkubo T, Hibino H, Okuyama H. Long-term High-Soybean Oil Feeding Alters Regulation of Body Temperature in Rats. Biol Pharm Bull 2014; 37:1003-13. [DOI: 10.1248/bpb.b13-00977] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Hiromi Tsushima
- Laboratory of Pharmacology, Kinjo Gakuin University College of Pharmacy
| | - Kazuyo Yamada
- Open Research Center, Kinjo Gakuin University College of Pharmacy
| | - Daisuke Miyazawa
- Open Research Center, Kinjo Gakuin University College of Pharmacy
| | - Mayumi Mori
- Department of Pharmacology, Nagoya City University Graduate School of Medical Science
| | - Yoko Hashimoto
- Department of Biochemistry, School of Dentistry, Aichi-Gakuin University
| | | | | | - Harumi Okuyama
- Open Research Center, Kinjo Gakuin University College of Pharmacy
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21
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Krizo JA, Mintz EM. Sex differences in behavioral circadian rhythms in laboratory rodents. Front Endocrinol (Lausanne) 2014; 5:234. [PMID: 25620955 PMCID: PMC4288375 DOI: 10.3389/fendo.2014.00234] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 12/18/2014] [Indexed: 11/15/2022] Open
Abstract
There is a strong bias in basic research on circadian rhythms toward the use of only male animals in studies. Furthermore, of the studies that use female subjects, many use only females and do not compare results between males and females. This review focuses on behavioral aspects of circadian rhythms that differ between the sexes. Differences exist in the timing of daily onset of activity, responses to both photic and non-photic stimuli, and in changes across the lifespan. These differences may reflect biologically important traits that are ecologically relevant and impact on a variety of responses to behavioral and physiological challenges. Overall, more work needs to be done to investigate differences between males and females as well as differences that are the result of hormonal changes across the lifespan.
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Affiliation(s)
- Jessica A Krizo
- Department of Biological Sciences, Kent State University , Kent, OH , USA
| | - Eric M Mintz
- Department of Biological Sciences, Kent State University , Kent, OH , USA ; School of Biomedical Sciences, Kent State University , Kent, OH , USA
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22
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Tahara Y, Shibata S. Chronobiology and nutrition. Neuroscience 2013; 253:78-88. [PMID: 24007937 DOI: 10.1016/j.neuroscience.2013.08.049] [Citation(s) in RCA: 124] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 08/21/2013] [Accepted: 08/24/2013] [Indexed: 12/15/2022]
Abstract
Numerous long-term studies have investigated the circadian clock system in mammals, which organizes physiological functions, including metabolism, digestion, and absorption of food, and energy expenditure. Food or nutrition can be a synchronizer for the circadian clock systems, as potent as the external light-dark signal can be. Recent studies have investigated different kinds of food, frequency of consumption, and time of consumption for optimizing body clock and ensuring healthy habits. In this review, we discuss recent studies investigating chronobiology and nutrition, and then summarize available information as "Chrono-nutrition" for the development of a new standardized research strategy.
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Affiliation(s)
- Y Tahara
- Laboratory of Physiology and Pharmacology, School of Advanced Science and Engineering, Waseda University, Tokyo, Japan
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