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Kelleher AC, Pearson TD, Ramsey J, Zhao W, O'Conor KA, Bakhoda A, Stodden T, Guo M, Eisenberg SM, Shah SV, Freaney ML, Kim W, Kang Y, Tomasi D, Johnson C, Fang CA, Volkow ND, Kim SW. Investigation of [ 11C]carfentanil for mu opioid receptor quantification in the rat brain. Sci Rep 2024; 14:16250. [PMID: 39009645 PMCID: PMC11250808 DOI: 10.1038/s41598-024-66144-4] [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: 03/24/2024] [Accepted: 06/27/2024] [Indexed: 07/17/2024] Open
Abstract
[11C]Carfentanil ([11C]CFN) is the only selective carbon-11 labeled radiotracer currently available for positron emission tomography (PET) imaging of mu opioid receptors (MORs). Though used extensively in clinical research, [11C]CFN has not been thoroughly characterized as a tool for preclinical PET imaging. As we were occasionally observing severe vital sign instability in rat [11C]CFN studies, we set out to investigate physiological effects of CFN mass and to explore its influence on MOR quantification. In anesthetized rats (n = 15), significant dose-dependent PCO2 increases and heart rate decreases were observed at a conventional tracer dose range (IV, > 100 ng/kg). Next, we conducted baseline and retest [11C]CFN PET scans over a wide range of molar activities. Baseline [11C]CFN PET studies (n = 27) found that nondisplaceable binding potential (BPND) in the thalamus was positively correlated to CFN injected mass, demonstrating increase of MOR availability at higher injected CFN mass. Consistently, when CFN injected mass was constrained < 40 ng/kg (~ 10% MOR occupancy in rats), baseline MOR availability was significantly decreased. For test-retest variability (TRTV), better reproducibility was achieved by controlling CFN injected mass to limit the difference between scans. Taken together, we report significant cardiorespiratory depression and a paradoxical influence on baseline MOR availability at conventional tracer doses in rats. Our findings might reflect changes in cerebral blood flow, changes in receptor affinity, or receptor internalization, and merits further mechanistic investigation. In conclusion, rat [11C]CFN PET requires stringent quality assurance of radiotracer synthesis and mass injected to avoid pharmacological effects and limit potential influences on MOR quantification and reproducibility.
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Affiliation(s)
- Andrew C Kelleher
- Laboratory of Neuroimaging, National Institute On Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Torben D Pearson
- Laboratory of Neuroimaging, National Institute On Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Joseph Ramsey
- Laboratory of Neuroimaging, National Institute On Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Wenjing Zhao
- Laboratory of Neuroimaging, National Institute On Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Kelly A O'Conor
- Laboratory of Neuroimaging, National Institute On Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Abolghasem Bakhoda
- Laboratory of Neuroimaging, National Institute On Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Tyler Stodden
- Laboratory of Neuroimaging, National Institute On Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Min Guo
- Laboratory of Neuroimaging, National Institute On Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Seth M Eisenberg
- Laboratory of Neuroimaging, National Institute On Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Sarthak V Shah
- Laboratory of Neuroimaging, National Institute On Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Michael L Freaney
- Laboratory of Neuroimaging, National Institute On Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Woochan Kim
- Laboratory of Neuroimaging, National Institute On Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Yeona Kang
- Laboratory of Neuroimaging, National Institute On Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
- Department of Mathematics, Howard University, Washington, DC, 20059, USA
| | - Dardo Tomasi
- Laboratory of Neuroimaging, National Institute On Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Christopher Johnson
- Molecular Imaging Branch, National Institute of Mental Health, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Chung-An Fang
- Laboratory of Neuroimaging, National Institute On Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Nora D Volkow
- Laboratory of Neuroimaging, National Institute On Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA.
| | - Sung Won Kim
- Laboratory of Neuroimaging, National Institute On Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892, USA.
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Sun L, Malén T, Tuisku J, Kaasinen V, Hietala JA, Rinne J, Nuutila P, Nummenmaa L. Seasonal variation in D2/3 dopamine receptor availability in the human brain. Eur J Nucl Med Mol Imaging 2024:10.1007/s00259-024-06715-9. [PMID: 38730083 DOI: 10.1007/s00259-024-06715-9] [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: 01/04/2024] [Accepted: 04/14/2024] [Indexed: 05/12/2024]
Abstract
PURPOSE Brain functional and physiological plasticity is essential to combat dynamic environmental challenges. The rhythmic dopamine signaling pathway, which regulates emotion, reward and learning, shows seasonal patterns with higher capacity of dopamine synthesis and lower number of dopamine transporters during dark seasons. However, seasonal variation of the dopamine receptor signaling remains to be characterized. METHODS Based on a historical database of healthy human brain [11C]raclopride PET scans (n = 291, 224 males and 67 females), we investigated the seasonal patterns of D2/3 dopamine receptor signaling. Daylength at the time of scanning was used as a predictor for brain regional non-displaceable binding of the radiotracer, while controlling for age and sex. RESULTS Daylength was negatively correlated with availability of D2/3 dopamine receptors in the striatum. The largest effect was found in the left caudate, and based on the primary sample, every 4.26 h (i.e., one standard deviation) increase of daylength was associated with a mean 2.8% drop (95% CI -0.042 to -0.014) of the receptor availability. CONCLUSIONS Seasonally varying D2/3 receptor signaling may also underlie the seasonality of mood, feeding, and motivational processes. Our finding suggests that in future studies of brain dopamine signaling, especially in high-latitude regions, the effect of seasonality should be considered.
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Affiliation(s)
- Lihua Sun
- Huashan Institute of Medicine, Huashan Hospital, Fudan University, Shanghai, China.
- Turku PET Centre, University of Turku, Turku, Finland.
- Turku PET Centre, Turku University Hospital, Turku, Finland.
| | - Tuulia Malén
- Turku PET Centre, University of Turku, Turku, Finland
- Turku PET Centre, Turku University Hospital, Turku, Finland
| | - Jouni Tuisku
- Turku PET Centre, University of Turku, Turku, Finland
- Turku PET Centre, Turku University Hospital, Turku, Finland
| | - Valtteri Kaasinen
- Clinical Neurosciences, University of Turku, Turku, Finland
- Turku University Hospital, Neurocenter, Turku, Finland
| | - Jarmo A Hietala
- Turku PET Centre, University of Turku, Turku, Finland
- Turku PET Centre, Turku University Hospital, Turku, Finland
- Department of Psychiatry, University of Turku, Turku University Hospital, Turku, Finland
| | - Juha Rinne
- Turku PET Centre, University of Turku, Turku, Finland
- Turku PET Centre, Turku University Hospital, Turku, Finland
| | - Pirjo Nuutila
- Turku PET Centre, University of Turku, Turku, Finland
- Turku PET Centre, Turku University Hospital, Turku, Finland
- Department of Endocrinology, Turku University Hospital, Turku, Finland
| | - Lauri Nummenmaa
- Turku PET Centre, University of Turku, Turku, Finland
- Turku PET Centre, Turku University Hospital, Turku, Finland
- Department of Psychology, University of Turku, Turku, Finland
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Ibrahim W, An J, Yang Y, Cosgrove KP, Matuskey D. Does seasonal variation affect the neuroimmune system? A retrospective [ 11C]PBR28 PET study in healthy individuals. Neurosci Lett 2024; 828:137766. [PMID: 38583505 PMCID: PMC11073647 DOI: 10.1016/j.neulet.2024.137766] [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: 12/14/2023] [Revised: 03/31/2024] [Accepted: 04/04/2024] [Indexed: 04/09/2024]
Abstract
INTRODUCTION The neuroimmune system performs a wide range of functions in the brain and the central nervous system. The microglial translocator protein (TSPO) has an established role as a cell marker in identification of the neuroimmune system. Previously, human studies have shown TSPO differences in neuropsychiatric disorders. Seasonal variability has also been demonstrated in multiple systems of healthy individuals. Therefore, in this study, we attempt to understand whether seasonal changes affect brain TSPO levels using [11C]PBR28 positron emission tomography (PET) imaging. METHODS 46 healthy subjects (mean age ± SD = 32.5 ± 10); sex (M/F) = 32/14)) underwent PET imaging with [11C]PBR28 in a retrospectively conducted analysis. All PET scans were performed on the HRRT scanner. Volume of distribution (VT) values were generated for cortical and subcortical regions and the cerebellum. Spring/summer months were defined as March to August while fall/winter months were defined as September to February and were compared through 2-tailed t-tests (SciPy library v.1.10.1 and Pinguoin library on Python v.3.8.8). Average daylight hours and temperature in New Haven, CT were obtained online (www.wunderground.com) and compared to VT with Spearman's correlations. RESULTS There were no significant differences observed between the TSPO levels of spring/summer and fall/winter months in the brain (t = 0.52, p = 0.61). Additional analysis on all individual brain regions also indicated non-significance. Likewise, no significant correlations were found between TSPO levels in the whole brain and brain regions against daylight hours (ρ= 0.05, p = 0.74), temperature (ρ = 0.04, p = 0.81), or month (ρ = 0.08, p = 0.60). Controlling TSPO gene polymorphisms and other variables had no significant effect on the outcome. CONCLUSION To the best of our knowledge, this is the first human study to investigate seasonal changes in TSPO expression. Our results can be interpreted as the lack of seasonal variability in the neuroimmune system, but important limitations include high interindividual variability, test-retest variability, specificity of the tracer, and a limited sample size. Limitations notwithstanding, our results conclude that TSPO levels in the brain are not impacted by light and temperature changes in different seasons.
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Affiliation(s)
- Waleed Ibrahim
- Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, Connecticut
| | - Jeonghyun An
- Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, Connecticut
| | - Yanghong Yang
- Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, Connecticut
| | - Kelly P. Cosgrove
- Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, Connecticut
- Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut
| | - David Matuskey
- Department of Radiology and Biomedical Imaging, Yale University School of Medicine, New Haven, Connecticut
- Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut
- Department of Neurology, Yale University School of Medicine, New Haven, Connecticut
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Pettrey C, Kerr PL, Dickey TO. Physical Exercise as an Intervention for Depression: Evidence for Efficacy and Mu-Opioid Receptors as a Mechanism of Action. ADVANCES IN NEUROBIOLOGY 2024; 35:221-239. [PMID: 38874725 DOI: 10.1007/978-3-031-45493-6_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
Physical exercise is often cited as an important part of an intervention for depression, and there is empirical evidence to support this. However, the mechanism of action through which any potential antidepressant effects are produced is not widely understood. Recent evidence points toward the involvement of endogenous opioids, and especially the mu-opioid system, as a partial mediator of these effects. In this chapter, we discuss the current level of empirical support for physical exercise as either an adjunctive or standalone intervention for depression. We then review the extant evidence for involvement of endogenous opioids in the proposed antidepressant effects of exercise, with a focus specifically on evidence for mu-opioid system involvement.
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Affiliation(s)
| | - Patrick L Kerr
- Behavioral Medicine & Psychiatry, WVU School of Medicine, Charleston, WV, USA
| | - T O Dickey
- West Virginia University School of Medicine-Charleston, Charleston, WV, USA
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Hohm I, Wormley AS, Schaller M, Varnum MEW. Homo temporus: Seasonal Cycles as a Fundamental Source of Variation in Human Psychology. PERSPECTIVES ON PSYCHOLOGICAL SCIENCE 2024; 19:151-172. [PMID: 37428561 PMCID: PMC10790523 DOI: 10.1177/17456916231178695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
Abstract
Many animal species exhibit seasonal changes in their physiology and behavior. Yet despite ample evidence that humans are also responsive to seasons, the impact of seasonal changes on human psychology is underappreciated relative to other sources of variation (e.g., personality, culture, development). This is unfortunate because seasonal variation has potentially profound conceptual, empirical, methodological, and practical implications. Here, we encourage a more systematic and comprehensive collective effort to document and understand the many ways in which seasons influence human psychology. We provide an illustrative summary of empirical evidence showing that seasons impact a wide range of affective, cognitive, and behavioral phenomena. We then articulate a conceptual framework that outlines a set of causal mechanisms through which seasons can influence human psychology-mechanisms that reflect seasonal changes not only in meteorological variables but also in ecological and sociocultural variables. This framework may be useful for integrating many different seasonal effects that have already been empirically documented and for generating new hypotheses about additional seasonal effects that have not yet received empirical attention. The article closes with a section that provides practical suggestions to facilitate greater appreciation for, and systematic study of, seasons as a fundamental source of variation in human psychology.
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Affiliation(s)
- Ian Hohm
- Department of Psychology, University of British Columbia
| | | | - Mark Schaller
- Department of Psychology, University of British Columbia
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Bodnar RJ. Endogenous opiates and behavior: 2021. Peptides 2023; 164:171004. [PMID: 36990387 DOI: 10.1016/j.peptides.2023.171004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 03/23/2023] [Accepted: 03/23/2023] [Indexed: 03/29/2023]
Abstract
This paper is the forty-fourth consecutive installment of the annual anthological review of research concerning the endogenous opioid system, summarizing articles published during 2021 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides and receptors as well as effects of opioid/opiate agonizts and antagonists. The review is subdivided into the following specific topics: molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors (1), the roles of these opioid peptides and receptors in pain and analgesia in animals (2) and humans (3), opioid-sensitive and opioid-insensitive effects of nonopioid analgesics (4), opioid peptide and receptor involvement in tolerance and dependence (5), stress and social status (6), learning and memory (7), eating and drinking (8), drug abuse and alcohol (9), sexual activity and hormones, pregnancy, development and endocrinology (10), mental illness and mood (11), seizures and neurologic disorders (12), electrical-related activity and neurophysiology (13), general activity and locomotion (14), gastrointestinal, renal and hepatic functions (15), cardiovascular responses (16), respiration and thermoregulation (17), and immunological responses (18).
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Affiliation(s)
- Richard J Bodnar
- Department of Psychology and Neuropsychology Doctoral Sub-Program, Queens College, City University of New York, CUNY, 65-30 Kissena Blvd., Flushing, NY 11367, USA.
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7
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Hidalgo S, Anguiano M, Tabuloc CA, Chiu JC. Seasonal cues act through the circadian clock and pigment-dispersing factor to control EYES ABSENT and downstream physiological changes. Curr Biol 2023; 33:675-687.e5. [PMID: 36708710 PMCID: PMC9992282 DOI: 10.1016/j.cub.2023.01.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 12/05/2022] [Accepted: 01/05/2023] [Indexed: 01/28/2023]
Abstract
Organisms adapt to seasonal changes in photoperiod and temperature to survive; however, the mechanisms by which these signals are integrated in the brain to alter seasonal biology are poorly understood. We previously reported that EYES ABSENT (EYA) shows higher levels in cold temperature or short photoperiod and promotes winter physiology in Drosophila. Nevertheless, how EYA senses seasonal cues is unclear. Pigment-dispersing factor (PDF) is a neuropeptide important for regulating circadian output rhythms. Interestingly, PDF has also been shown to regulate seasonality, suggesting that it may mediate the function of the circadian clock in modulating seasonal physiology. In this study, we investigated the role of EYA in mediating the function of PDF on seasonal biology. We observed that PDF abundance is lower on cold and short days as compared with warm and long days, contrary to what was previously observed for EYA. We observed that manipulating PDF signaling in eya+ fly brain neurons, where EYA and PDF receptor are co-expressed, modulates seasonal adaptations in daily activity rhythm and ovary development via EYA-dependent and EYA-independent mechanisms. At the molecular level, altering PDF signaling impacted EYA protein abundance. Specifically, we showed that protein kinase A (PKA), an effector of PDF signaling, phosphorylates EYA promoting its degradation, thus explaining the opposite responses of PDF and EYA abundance to changes in seasonal cues. In summary, our results support a model in which PDF signaling negatively modulates EYA levels to regulate seasonal physiology, linking the circadian clock to the modulation of seasonal adaptations.
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Affiliation(s)
- Sergio Hidalgo
- Department of Entomology and Nematology, College of Agricultural and Environmental Sciences, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA
| | - Maribel Anguiano
- Department of Entomology and Nematology, College of Agricultural and Environmental Sciences, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA
| | - Christine A Tabuloc
- Department of Entomology and Nematology, College of Agricultural and Environmental Sciences, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA
| | - Joanna C Chiu
- Department of Entomology and Nematology, College of Agricultural and Environmental Sciences, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA.
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Zhang R, Volkow ND. Seasonality of brain function: role in psychiatric disorders. Transl Psychiatry 2023; 13:65. [PMID: 36813773 PMCID: PMC9947162 DOI: 10.1038/s41398-023-02365-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 02/07/2023] [Accepted: 02/09/2023] [Indexed: 02/24/2023] Open
Abstract
Seasonality patterns are reported in various psychiatric disorders. The current paper summarizes findings on brain adaptations associated with seasonal changes, factors that contribute to individual differences and their implications for psychiatric disorders. Changes in circadian rhythms are likely to prominently mediate these seasonal effects since light strongly entrains the internal clock modifying brain function. Inability of circadian rhythms to accommodate to seasonal changes might increase the risk for mood and behavior problems as well as worse clinical outcomes in psychiatric disorders. Understanding the mechanisms that account for inter-individual variations in seasonality is relevant to the development of individualized prevention and treatment for psychiatric disorders. Despite promising findings, seasonal effects are still understudied and only controlled as a covariate in most brain research. Rigorous neuroimaging studies with thoughtful experimental designs, powered sample sizes and high temporal resolution alongside deep characterization of the environment are needed to better understand the seasonal adaptions of the human brain as a function of age, sex, and geographic latitude and to investigate the mechanisms underlying the alterations in seasonal adaptation in psychiatric disorders.
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Affiliation(s)
- Rui Zhang
- Laboratory of Neuroimaging, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20892-1013, USA.
| | - Nora D. Volkow
- grid.94365.3d0000 0001 2297 5165Laboratory of Neuroimaging, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892-1013 USA
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Sun L, Aarnio R, Herre EA, Kärnä S, Palani S, Virtanen H, Liljenbäck H, Virta J, Honkaniemi A, Oikonen V, Han C, Laurila S, Bucci M, Helin S, Yatkin E, Nummenmaa L, Nuutila P, Tang J, Roivainen A. [ 11C]carfentanil PET imaging for studying the peripheral opioid system in vivo: effect of photoperiod on mu-opioid receptor availability in brown adipose tissue. Eur J Nucl Med Mol Imaging 2023; 50:266-274. [PMID: 36166079 PMCID: PMC9816189 DOI: 10.1007/s00259-022-05969-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 09/15/2022] [Indexed: 01/11/2023]
Abstract
PURPOSE Photoperiod determines the metabolic activity of brown adipose tissue (BAT) and affects the food intake and body mass of mammals. Sympathetic innervation of the BAT controls thermogenesis and facilitates physiological adaption to seasonal changes, but the exact mechanism remains elusive. Previous studies have shown that central opioid signaling regulates BAT thermogenesis, and that the expression of the brain mu-opioid receptor (MOR) varies seasonally. Therefore, it is important to know whether MOR expression in BAT shows seasonal variation. METHODS We determined the effect of photoperiod on BAT MOR availability using [11C]carfentanil positron emission tomography (PET). Adult rats (n = 9) were repeatedly imaged under various photoperiods in order to simulate seasonal changes. RESULTS Long photoperiod was associated with low MOR expression in BAT (β = - 0.04, 95% confidence interval: - 0.07, - 0.01), but not in muscles. We confirmed the expression of MOR in BAT and muscle using immunofluorescence staining. CONCLUSION Photoperiod affects MOR availability in BAT. Sympathetic innervation of BAT may influence thermogenesis via the peripheral MOR system. The present study supports the utility of [11C]carfentanil PET to study the peripheral MOR system.
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Affiliation(s)
- Lihua Sun
- Department of Nuclear Medicine, Huashan Hospital, Fudan University, Shanghai, China.
- Turku PET Centre, University of Turku and Turku University Hospital, 20520, Turku, Finland.
| | - Richard Aarnio
- Turku PET Centre, University of Turku and Turku University Hospital, 20520, Turku, Finland
| | - Erika Atencio Herre
- Turku PET Centre, University of Turku and Turku University Hospital, 20520, Turku, Finland
| | - Salli Kärnä
- Turku PET Centre, University of Turku and Turku University Hospital, 20520, Turku, Finland
| | - Senthil Palani
- Turku PET Centre, University of Turku and Turku University Hospital, 20520, Turku, Finland
| | - Helena Virtanen
- Turku PET Centre, University of Turku and Turku University Hospital, 20520, Turku, Finland
| | - Heidi Liljenbäck
- Turku PET Centre, University of Turku and Turku University Hospital, 20520, Turku, Finland
- Turku Center for Disease Modeling, University of Turku, 20520, Turku, Finland
| | - Jenni Virta
- Turku PET Centre, University of Turku and Turku University Hospital, 20520, Turku, Finland
| | - Aake Honkaniemi
- Turku PET Centre, University of Turku and Turku University Hospital, 20520, Turku, Finland
| | - Vesa Oikonen
- Turku PET Centre, University of Turku and Turku University Hospital, 20520, Turku, Finland
| | - Chunlei Han
- Turku PET Centre, University of Turku and Turku University Hospital, 20520, Turku, Finland
| | - Sanna Laurila
- Turku PET Centre, University of Turku and Turku University Hospital, 20520, Turku, Finland
- Heart Center, Turku University Hospital, 20520, Turku, Finland
| | - Marco Bucci
- Turku PET Centre, University of Turku and Turku University Hospital, 20520, Turku, Finland
- Division of Clinical Geriatrics, Center for Alzheimer Research, Department of Neurobiology, Care Sciences and Society, Karolinska Institute, 17177, Stockholm, Sweden
- Theme Inflammation and Aging, Karolinska University Hospital, 14186, Stockholm, Sweden
- Turku PET Centre, Åbo Akademi University, Turku, Finland
| | - Semi Helin
- Turku PET Centre, University of Turku and Turku University Hospital, 20520, Turku, Finland
| | - Emrah Yatkin
- Central Animal Laboratory, University of Turku, 20520, Turku, Finland
| | - Lauri Nummenmaa
- Turku PET Centre, University of Turku and Turku University Hospital, 20520, Turku, Finland
- Department of Psychology, University of Turku, 20520, Turku, Finland
| | - Pirjo Nuutila
- Turku PET Centre, University of Turku and Turku University Hospital, 20520, Turku, Finland
- Department of Endocrinology, Turku University Hospital, 20520, Turku, Finland
- InFLAMES Research Flagship Center, University of Turku, 20520, Turku, Finland
| | - Jing Tang
- Research Program in Systems Oncology, Faculty of Medicine, University of Helsinki, 00014, Helsinki, Finland
| | - Anne Roivainen
- Turku PET Centre, University of Turku and Turku University Hospital, 20520, Turku, Finland
- Turku Center for Disease Modeling, University of Turku, 20520, Turku, Finland
- InFLAMES Research Flagship Center, University of Turku, 20520, Turku, Finland
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Scholkmann F, Zohdi H, Wolf M, Wolf U. Infradian Rhythms in Cerebrovascular Oxygenation and Blood Volume in Humans at Rest: A 5-Year Study. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1438:37-44. [PMID: 37845437 DOI: 10.1007/978-3-031-42003-0_7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Abstract
BACKGROUND All parameters of human physiology show chronobiological variability. While circadian (cycle length ~ 24 h) rhythms of the neuronal, hemodynamic and metabolic aspects of human brain activity are increasingly being explored, infradian (cycle length > 24 h) rhythms are largely unexplored. AIM We investigated if cerebrovascular oxygen saturation (StO2) and blood volume ([tHb]) values measured over many years in many subjects during resting show infradian rhythmicity. SUBJECTS AND METHODS Absolute StO2 and [tHb] values (median over a 5 min resting-phase while sitting) were measured in 220 healthy subjects (age: 24.7 ± 3.6 years, 87 males, 133 females) 2-4 times on different days over the right and left frontal lobe (FL) and occipital lobe (OL) by employing frequency-domain NIRS as part of different systemic physiology augmented functional near-infrared spectroscopy, SPA-fNIRS, studies. The data set consisted of 708 single measurements performed over a timespan of 5 years (2017-2021). General additive models (GAM) and cosinor modelling were used to analyze the data. RESULTS The GAM analysis revealed (i) a non-linear trend in the StO2 and [tHb] values over the 5-year span, (ii) a circannual (cycle length ~ 12 months) rhythm in StO2 at the FL (amplitude (A): 3.4%, acrophase (φ): June) and OL (A: 1.5%, φ: May) as well as in [tHb] at the OL (A: 1.2 μM, bathyphase (θ): June), and (iii) a circasemiannual (cycle length ~ 6 months) rhythm in [tHb] at the FL (A: 2.7 μM, φ: March and September, respectively). Furthermore, the circannual oscillations of StO2 (at the FL) and [tHb] (at the OL) were statistically significantly correlated with the day length, outdoor temperature, humidity and air pressure. DISCUSSION AND CONCLUSION We conclude that absolute values of StO2 and [tHb] show chronobiological variability on the group-level with a long-term nonlinear trend as well as circannual/circasemiannual rhythmicity. These rhythms need to be taken into account when defining reference values for StO2 and [tHb] and may correlate with the variability of cerebrovascular disease incidents over the year.
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Affiliation(s)
- Felix Scholkmann
- Institute of Complementary and Integrative Medicine, University of Bern, Bern, Switzerland.
- Biomedical Optics Research Laboratory, Department of Neonatology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
| | - Hamoon Zohdi
- Institute of Complementary and Integrative Medicine, University of Bern, Bern, Switzerland
- Biomedical Optics Research Laboratory, Department of Neonatology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Martin Wolf
- Biomedical Optics Research Laboratory, Department of Neonatology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Ursula Wolf
- Institute of Complementary and Integrative Medicine, University of Bern, Bern, Switzerland
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11
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Han B, Compton WM, Einstein EB, Cotto J, Hobin JA, Stein JB, Volkow ND. Intentional Drug Overdose Deaths in the United States. Am J Psychiatry 2022; 179:163-165. [PMID: 35105166 DOI: 10.1176/appi.ajp.2021.21060604] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Beth Han
- National Institute on Drug Abuse, National Institutes of Health, Bethesda, Md
| | - Wilson M Compton
- National Institute on Drug Abuse, National Institutes of Health, Bethesda, Md
| | - Emily B Einstein
- National Institute on Drug Abuse, National Institutes of Health, Bethesda, Md
| | - Jessica Cotto
- National Institute on Drug Abuse, National Institutes of Health, Bethesda, Md
| | - Jennifer A Hobin
- National Institute on Drug Abuse, National Institutes of Health, Bethesda, Md
| | - Jack B Stein
- National Institute on Drug Abuse, National Institutes of Health, Bethesda, Md
| | - Nora D Volkow
- National Institute on Drug Abuse, National Institutes of Health, Bethesda, Md
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12
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Abstract
We live in a world that changes on many timescales. To learn and make decisions appropriately, the human brain has evolved to integrate various types of information, such as sensory evidence and reward feedback, on multiple timescales. This is reflected in cortical hierarchies of timescales consisting of heterogeneous neuronal activities and expression of genes related to neurotransmitters critical for learning. We review the recent findings on how timescales of sensory and reward integration are affected by the temporal properties of sensory and reward signals in the environment. Despite existing evidence linking behavioral and neuronal timescales, future studies must examine how neural computations at multiple timescales are adjusted and combined to influence behavior flexibly.
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Affiliation(s)
- Alireza Soltani
- Department of Psychological and Brain Sciences, Dartmouth College, Moore Hall, 3 Maynard St, Hanover, NH 03755
| | - John D. Murray
- Department of Psychiatry, Yale School of Medicine, 300 George Street, New Haven, CT 06511
| | - Hyojung Seo
- Department of Psychiatry, Yale School of Medicine, 300 George Street, New Haven, CT 06511
| | - Daeyeol Lee
- The Zanvyl Krieger Mind/Brain Institute, Department of Neuroscience, Department of Psychological Sciences, Kavli Neuroscience Discovery Institute, Johns Hopkins University, 3400 North Charles Street, Baltimore, MD 21218
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13
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Khan SR, Heller DA, Latty LL, LaSure M, Brown TV. A Retrospective Study of Psychotropic Drug Use and Prescription Opioid Initiation Among Older Adults. Popul Health Manag 2021; 25:126-133. [PMID: 34402688 DOI: 10.1089/pop.2021.0129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Individuals with mental health problems may be more vulnerable to using prescription opioids than their counterparts. Therefore, the main objective of this study was to assess the initiation of prescription opioids in older adults who used psychotropic drugs compared with those who did not. The authors used a retrospective cohort design and included a sample of older adults enrolled in Pennsylvania's Pharmaceutical Assistance Contract for the Elderly program who did not use prescription opioids in 2013. Using pharmacy claims, patients who used anxiolytics/sedatives/hypnotics (n = 13,512) or antidepressants (n = 17,492) between October and December 2013 were identified and compared with those who did not use anxiolytics/sedatives/hypnotics (n = 114,091) or antidepressants (n = 110,111) during that period, to determine the incidence of prescription opioid use in 2014. Chi-square tests and multivariate logistic regressions were performed for analyses. Compared with patients who did not use anxiolytics/sedatives/hypnotics, those who used were more likely to initiate prescription opioids (15.0% versus 22.0%, P < .0001). Similarly, compared with patients who did not use antidepressants, those who used were more likely to initiate prescription opioids (14.7% versus 21.9%, P < .0001). Multivariate logistic regression indicated that the odds of prescription opioid initiation increased with anxiolytic/sedative/hypnotic use by 44% (AOR = 1.44; P < .0001) and antidepressant use by 48% (AOR = 1.48; P < .0001) among older adults after adjusting for potential confounding variables. Results showed that prescription opioid initiation is associated with prior anxiolytic/sedative/hypnotic or antidepressant use among older adults. Patients with mental health problems should also be queried about pain experiences for effective treatment.
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Affiliation(s)
- Shivani R Khan
- Magellan Rx Management/PACE, Harrisburg, Pennsylvania, USA
| | - Debra A Heller
- Magellan Rx Management/PACE, Harrisburg, Pennsylvania, USA
| | - Leroy L Latty
- Magellan Rx Management/PACE, Harrisburg, Pennsylvania, USA
| | | | - Theresa V Brown
- Pennsylvania Department of Aging, Bureau of Pharmaceutical Assistance, Harrisburg, Pennsylvania, USA
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14
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Červená K, Spišská V, Kolář D, Evansová K, Skálová K, Dostal J, Vybíral S, Bendová Z. Diurnal and seasonal differences in cardiopulmonary response to exercise in morning and evening chronotypes. Chronobiol Int 2021; 38:1661-1672. [PMID: 34128445 DOI: 10.1080/07420528.2021.1938598] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Circadian clocks regulate multiple physiological domains from molecular to behavioral levels and adjust bodily physiology to seasonal changes in day length. Circadian regulation of cellular bioenergy and immunity in the cardiovascular and muscle systems may underpin the individual diurnal differences in performance capacity during exercise. Several studies have shown diurnal differences in cardiopulmonary parameters at maximal and submaximal workloads in morning and evening circadian human phenotypes. However, the effect of seasons on these changes was not elucidated. In this study, we recruited subjects with Morningness-Eveningness Questionnaire scores corresponding to morning and evening types. Subjects underwent morning (7:00-9:00) and evening (20:00-22:00) maximal workload spiroergometry in both winter and summer seasons. We analyzed their performance time, anaerobic threshold, heart rate, and respiratory parameters. Our results suggest that evening types manifest diurnal variations in physical performance, particularly in winter. They also have slower heart rate recovery than morning types, irrespective of the time of day or season. Compared to winter, the chronotype effect on the magnitude of morning-evening differences in performance time, maximal heart rate, and anaerobic threshold onset was more significant in summer. Our data are in concordance with previous observations and confirm the difference between morning and evening types in the timing of maximum performance capacity.
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Affiliation(s)
- Kateřina Červená
- Department of Physiology, Faculty of Science, Charles University, Prague, Czech Republic.,Department of Sleep Medicine and Chronobiology, National Institute of Mental Health, Klecany, Czech Republic
| | - Veronika Spišská
- Department of Physiology, Faculty of Science, Charles University, Prague, Czech Republic
| | - David Kolář
- Department of Sleep Medicine and Chronobiology, National Institute of Mental Health, Klecany, Czech Republic
| | - Katarína Evansová
- Department of Sleep Medicine and Chronobiology, National Institute of Mental Health, Klecany, Czech Republic.,Third Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Kateřina Skálová
- Department of Physiology, Faculty of Science, Charles University, Prague, Czech Republic.,Department of Sleep Medicine and Chronobiology, National Institute of Mental Health, Klecany, Czech Republic
| | - Jiří Dostal
- 1st Department of Internal Medicine, Faculty of Medicine in Hradec Kralove, Charles University, Hradec Kralove, Czech Republic
| | - Stanislav Vybíral
- Department of Physiology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Zdeňka Bendová
- Department of Physiology, Faculty of Science, Charles University, Prague, Czech Republic.,Department of Sleep Medicine and Chronobiology, National Institute of Mental Health, Klecany, Czech Republic
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