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Voigt RM, Ouyang B, Keshavarzian A. Outdoor nighttime light exposure (light pollution) is associated with Alzheimer's disease. Front Neurosci 2024; 18:1378498. [PMID: 39308948 PMCID: PMC11412842 DOI: 10.3389/fnins.2024.1378498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Accepted: 07/09/2024] [Indexed: 09/25/2024] Open
Abstract
Introduction Alzheimer's disease (AD) prevalence has increased in the last century which can be attributed to increased lifespan, but environment is also important. Exposure to artificial light at night is one environmental factor that may influence AD. Methods This study evaluated the relationship between outdoor nighttime light exposure and AD prevalence in the United States using satellite acquired outdoor nighttime light intensity and Medicare data. Results Higher outdoor nighttime light was associated with higher prevalence of AD. While atrial fibrillation, diabetes, hyperlipidemia, hypertension, and stroke were associated more strongly with AD prevalence than nighttime light intensity, nighttime light was more strongly associated with AD prevalence than alcohol abuse, chronic kidney disease, depression, heart failure, and obesity. Startlingly, nighttime light exposure more strongly associated with AD prevalence in those under the age of 65 than any other disease factor examined. Discussion These data suggest light exposure at night may influence AD, but additional studies are needed.
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Affiliation(s)
- Robin M. Voigt
- Rush Medical College, Rush Center for Integrated Microbiome and Chronobiology Research, Rush University Medical Center, Chicago, IL, United States
- Department of Internal Medicine, Rush University Medical Center, Chicago, IL, United States
- Department of Anatomy and Cell Biology, Rush University Medical Center, Chicago, IL, United States
| | - Bichun Ouyang
- Department of Neurological Sciences, Rush University Medical Center, Chicago, IL, United States
| | - Ali Keshavarzian
- Rush Medical College, Rush Center for Integrated Microbiome and Chronobiology Research, Rush University Medical Center, Chicago, IL, United States
- Department of Internal Medicine, Rush University Medical Center, Chicago, IL, United States
- Department of Anatomy and Cell Biology, Rush University Medical Center, Chicago, IL, United States
- Department of Physiology, Rush University Medical Center, Chicago, IL, United States
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Kumar D, Khan B, Okcay Y, Sis ÇÖ, Abdallah A, Murray F, Sharma A, Uemura M, Taliyan R, Heinbockel T, Rahman S, Goyal R. Dynamic endocannabinoid-mediated neuromodulation of retinal circadian circuitry. Ageing Res Rev 2024; 99:102401. [PMID: 38964508 DOI: 10.1016/j.arr.2024.102401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 06/05/2024] [Accepted: 06/28/2024] [Indexed: 07/06/2024]
Abstract
Circadian rhythms are biological rhythms that originate from the "master circadian clock," called the suprachiasmatic nucleus (SCN). SCN orchestrates the circadian rhythms using light as a chief zeitgeber, enabling humans to synchronize their daily physio-behavioral activities with the Earth's light-dark cycle. However, chronic/ irregular photic disturbances from the retina via the retinohypothalamic tract (RHT) can disrupt the amplitude and the expression of clock genes, such as the period circadian clock 2, causing circadian rhythm disruption (CRd) and associated neuropathologies. The present review discusses neuromodulation across the RHT originating from retinal photic inputs and modulation offered by endocannabinoids as a function of mitigation of the CRd and associated neuro-dysfunction. Literature indicates that cannabinoid agonists alleviate the SCN's ability to get entrained to light by modulating the activity of its chief neurotransmitter, i.e., γ-aminobutyric acid, thus preventing light-induced disruption of activity rhythms in laboratory animals. In the retina, endocannabinoid signaling modulates the overall gain of the retinal ganglion cells by regulating the membrane currents (Ca2+, K+, and Cl- channels) and glutamatergic neurotransmission of photoreceptors and bipolar cells. Additionally, endocannabinoids signalling also regulate the high-voltage-activated Ca2+ channels to mitigate the retinal ganglion cells and intrinsically photosensitive retinal ganglion cells-mediated glutamate release in the SCN, thus regulating the RHT-mediated light stimulation of SCN neurons to prevent excitotoxicity. As per the literature, cannabinoid receptors 1 and 2 are becoming newer targets in drug discovery paradigms, and the involvement of endocannabinoids in light-induced CRd through the RHT may possibly mitigate severe neuropathologies.
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Affiliation(s)
- Deepak Kumar
- Department of Neuropharmacology, School of Pharmaceutical Sciences, Shoolini University of Biotechnology and Management Sciences, Solan, HP 173229, India.
| | - Bareera Khan
- Faculty of Applied Sciences and Biotechnology, Shoolini University of Biotechnology and Management Sciences, Solan, HP 173229, India
| | - Yagmur Okcay
- University of Health Sciences Gulhane Faculty of Pharmacy Department of Pharmacology, Turkey.
| | - Çağıl Önal Sis
- University of Health Sciences Gulhane Faculty of Pharmacy Department of Pharmacology, Turkey.
| | - Aya Abdallah
- Institute of Medical Science, University of Aberdeen, Aberdeen, Scotland.
| | - Fiona Murray
- Institute of Medical Science, University of Aberdeen, Aberdeen, Scotland.
| | - Ashish Sharma
- School of Medicine, Washington University, St. Louis, USA
| | - Maiko Uemura
- Department of Neurology, Kyoto University Graduate School of Medicine, Kyoto, Japan.
| | - Rajeev Taliyan
- Department of Pharmacy, Birla Institute of Technology Science, Pilani, Rajasthan 333301, India.
| | - Thomas Heinbockel
- Howard University College of Medicine, Department of Anatomy, Washington, DC 20059, USA
| | - Shafiqur Rahman
- Department of Pharmaceutical Sciences, College of Pharmacy South Dakota State University, Brookings, SD, USA.
| | - Rohit Goyal
- Department of Neuropharmacology, School of Pharmaceutical Sciences, Shoolini University of Biotechnology and Management Sciences, Solan, HP 173229, India.
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Campbell KJ, Jiang P, Olker C, Lin X, Kim SY, Lee CJ, Song EJ, Turek FW, Vitaterna MH. The impacts of sex and the 5xFAD model of Alzheimer's disease on the sleep and spatial learning responses to feeding time. Front Neurol 2024; 15:1430989. [PMID: 39144714 PMCID: PMC11322461 DOI: 10.3389/fneur.2024.1430989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Accepted: 07/16/2024] [Indexed: 08/16/2024] Open
Abstract
Introduction The relationships between the feeding rhythm, sleep and cognition in Alzheimer's disease (AD) are incompletely understood, but meal time could provide an easy-to-implement method of curtailing disease-associated disruptions in sleep and cognition. Furthermore, known sex differences in AD incidence could relate to sex differences in circadian rhythm/sleep/cognition interactions. Methods The 5xFAD transgenic mouse model of AD and non-transgenic wild-type controls were studied. Both female and male mice were used. Food access was restricted each day to either the 12-h light phase (light-fed groups) or the 12-h dark phase (dark-fed groups). Sleep (electroencephalographic/electromyographic) recording and cognitive behavior measures were collected. Results The 5xFAD genotype reduces NREM and REM as well as the number of sleep spindles. In wild-type mice, light-fed groups had disrupted vigilance state amounts, characteristics, and rhythms relative to dark-fed groups. These feeding time differences were reduced in 5xFAD mice. Sex modulates these effects. 5xFAD mice display poorer spatial memory that, in female mice, is curtailed by dark phase feeding. Similarly, female 5xFAD mice have decreased anxiety-associated behavior. These emotional and cognitive measures are correlated with REM amount. Discussion Our study demonstrates that the timing of feeding can alter many aspects of wake, NREM and REM. Unexpectedly, 5xFAD mice are less sensitive to these feeding time effects. 5xFAD mice demonstrate deficits in cognition which are correlated with REM, suggesting that this circadian-timed aspect of sleep may link feeding time and cognition. Sex plays an important role in regulating the impact of feeding time on sleep and cognition in both wild-type and 5xFAD mice, with females showing a greater cognitive response to feeding time than males.
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Affiliation(s)
- Katrina J. Campbell
- Center for Sleep and Circadian Biology, Northwestern University, Evanston, IL, United States
- Department of Neurobiology, Weinberg College of Arts and Sciences, Northwestern University, Evanston, IL, United States
| | - Peng Jiang
- Center for Sleep and Circadian Biology, Northwestern University, Evanston, IL, United States
- Department of Neurobiology, Weinberg College of Arts and Sciences, Northwestern University, Evanston, IL, United States
| | - Christopher Olker
- Center for Sleep and Circadian Biology, Northwestern University, Evanston, IL, United States
- Department of Neurobiology, Weinberg College of Arts and Sciences, Northwestern University, Evanston, IL, United States
| | - Xuanyi Lin
- Center for Sleep and Circadian Biology, Northwestern University, Evanston, IL, United States
- Department of Neurobiology, Weinberg College of Arts and Sciences, Northwestern University, Evanston, IL, United States
| | - Sarah Y. Kim
- Center for Sleep and Circadian Biology, Northwestern University, Evanston, IL, United States
- Department of Neurobiology, Weinberg College of Arts and Sciences, Northwestern University, Evanston, IL, United States
| | - Christopher J. Lee
- Center for Sleep and Circadian Biology, Northwestern University, Evanston, IL, United States
- Department of Neurobiology, Weinberg College of Arts and Sciences, Northwestern University, Evanston, IL, United States
| | - Eun Joo Song
- Center for Sleep and Circadian Biology, Northwestern University, Evanston, IL, United States
- Department of Neurobiology, Weinberg College of Arts and Sciences, Northwestern University, Evanston, IL, United States
| | - Fred W. Turek
- Center for Sleep and Circadian Biology, Northwestern University, Evanston, IL, United States
- Department of Neurobiology, Weinberg College of Arts and Sciences, Northwestern University, Evanston, IL, United States
| | - Martha Hotz Vitaterna
- Center for Sleep and Circadian Biology, Northwestern University, Evanston, IL, United States
- Department of Neurobiology, Weinberg College of Arts and Sciences, Northwestern University, Evanston, IL, United States
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Voigt RM, Ouyang B, Keshavarzian A. Outdoor Nighttime Light Exposure (Light Pollution) is Associated with Alzheimer's Disease. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2024:2024.02.14.24302831. [PMID: 38405987 PMCID: PMC10889016 DOI: 10.1101/2024.02.14.24302831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
Alzheimer's disease (AD) prevalence has increased in the last century which can be attributed to increased lifespan, but environment is also important. This study evaluated the relationship between outdoor nighttime light exposure and AD prevalence in the United States. Higher outdoor nighttime light was associated with higher prevalence of AD. While atrial fibrillation, diabetes, hyperlipidemia, hypertension, and stroke were associated more strongly with AD prevalence than nighttime light intensity, nighttime light was more strongly associated with AD prevalence than alcohol abuse, chronic kidney disease, depression, heart failure, and obesity. Startlingly, nighttime light exposure more strongly associated with AD prevalence in those under the age of 65 than any other disease factor examined. These data indicate a need to investigate how nighttime light exposure influences AD pathogenesis.
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Affiliation(s)
- Robin M Voigt
- Rush Medical College, Rush Center for Integrated Microbiome and Chronobiology Research, Rush University Medical Center; Chicago, IL, USA
- Department of Internal Medicine, Rush University Medical Center; Chicago, IL, USA
- Department of Anatomy & Cell Biology, Rush University Medical Center; Chicago, IL, USA
| | - Bichun Ouyang
- Department of Neurological Sciences, Rush University Medical Center, Chicago, IL, USA
| | - Ali Keshavarzian
- Rush Medical College, Rush Center for Integrated Microbiome and Chronobiology Research, Rush University Medical Center; Chicago, IL, USA
- Department of Internal Medicine, Rush University Medical Center; Chicago, IL, USA
- Department of Anatomy & Cell Biology, Rush University Medical Center; Chicago, IL, USA
- Department of Physiology, Rush University Medical Center, Chicago, IL, USA
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Lei T, Hua H, Du H, Xia J, Xu D, Liu W, Wang Y, Yang T. Molecular mechanisms of artificial light at night affecting circadian rhythm disturbance. Arch Toxicol 2024; 98:395-408. [PMID: 38103071 DOI: 10.1007/s00204-023-03647-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 11/16/2023] [Indexed: 12/17/2023]
Abstract
Artificial light at night (ALAN) pollution has been regarded as a global environmental concern. More than 80% of the global population is exposed to light pollution. Exacerbating this issue, artificially lit outdoor areas are growing by 2.2% per year, while continuously lit areas have brightened by 2.2% each year due to rapid population growth and expanding urbanization. Furthermore, the increasing prevalence of night shift work and smart device usage contributes to the inescapable influence of ALAN. Studies have shown that ALAN can disrupt endogenous biological clocks, resulting in a disturbance of the circadian rhythm, which ultimately affects various physiological functions. Up until now, scholars have studied various disease mechanisms caused by ALAN that may be related to the response of the circadian system to light. This review outlines the molecular mechanisms by which ALAN causes circadian rhythm abnormalities in sleep disorders, endocrine diseases, cardiovascular disease, cancer, immune impairment, depression, anxiety and cognitive impairments.
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Affiliation(s)
- Ting Lei
- Key Laboratory of Environmental Stress and Chronic Disease Control and Prevention (China Medical University), Ministry of Education, Shenyang, 110122, Liaoning, China
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, 110122, Liaoning, China
| | - Hui Hua
- Department of Nutrition, School of Public Health, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, China
- Jiangsu Engineering Research Center of Biological Data Mining and Healthcare Transformation, Xuzhou Medical University, Xuzhou, Jiangsu, 221004, China
| | - Huiying Du
- Key Laboratory of Environmental Stress and Chronic Disease Control and Prevention (China Medical University), Ministry of Education, Shenyang, 110122, Liaoning, China
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, 110122, Liaoning, China
| | - Jie Xia
- Key Laboratory of Environmental Stress and Chronic Disease Control and Prevention (China Medical University), Ministry of Education, Shenyang, 110122, Liaoning, China
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, 110122, Liaoning, China
| | - Dandan Xu
- Key Laboratory of Environmental Stress and Chronic Disease Control and Prevention (China Medical University), Ministry of Education, Shenyang, 110122, Liaoning, China
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, 110122, Liaoning, China
| | - Wei Liu
- Key Laboratory of Environmental Stress and Chronic Disease Control and Prevention (China Medical University), Ministry of Education, Shenyang, 110122, Liaoning, China
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, 110122, Liaoning, China
| | - Yutong Wang
- Department of Oncology, Shengjing Hospital of China Medical University, Shenyang, 110004, Liaoning, China.
| | - Tianyao Yang
- Key Laboratory of Environmental Stress and Chronic Disease Control and Prevention (China Medical University), Ministry of Education, Shenyang, 110122, Liaoning, China.
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, 110122, Liaoning, China.
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Karska J, Kowalski S, Gładka A, Brzecka A, Sochocka M, Kurpas D, Beszłej JA, Leszek J. Artificial light and neurodegeneration: does light pollution impact the development of Alzheimer's disease? GeroScience 2024; 46:87-97. [PMID: 37733222 PMCID: PMC10828315 DOI: 10.1007/s11357-023-00932-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 09/04/2023] [Indexed: 09/22/2023] Open
Abstract
Two multidimensional problems of recent times - Alzheimer's disease and light pollution - seem to be more interrelated than previously expected. A series of studies in years explore the pathogenesis and the course of Alzheimer's disease, yet the mechanisms underlying this pathology remain not fully discovered and understood. Artificial lights which accompany civilization on a daily basis appear to have more detrimental effects on both environment and human health than previously anticipated. Circadian rhythm is affected by inappropriate lighting conditions in particular. The consequences are dysregulation of the sleep-wake cycle, gene expression, neuronal restructuring, brain's electricity, blood flow, metabolites' turnover, and gut microbiota as well. All these phenomena may contribute to neurodegeneration and consequently Alzheimer's disease. There is an increasing number of research underlining the complexity of the correlation between light pollution and Alzheimer's disease; however, additional studies to enhance the key tenets are required for a better understanding of this relationship.
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Affiliation(s)
- Julia Karska
- Department of Psychiatry, Wrocław Medical University, Pasteura 10, 50-367, Wrocław, Poland.
| | - Szymon Kowalski
- Faculty of Medicine, Wrocław Medical University, Pasteura 1, 50-367, Wrocław, Poland
| | - Anna Gładka
- Department of Psychiatry, Wrocław Medical University, Pasteura 10, 50-367, Wrocław, Poland
| | - Anna Brzecka
- Department of Pulmonology and Lung Oncology, Wrocław Medical University, Grabiszyńska 105, 53-439, Wrocław, Poland
| | - Marta Sochocka
- Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Rudolfa Weigla 12, 53-114, Wroclaw, Poland
| | - Donata Kurpas
- Health Sciences Faculty, Wroclaw Medical University, Bartla 5, 50-996, Wrocław, Poland
| | - Jan Aleksander Beszłej
- Department of Psychiatry, Wrocław Medical University, Pasteura 10, 50-367, Wrocław, Poland
| | - Jerzy Leszek
- Department of Psychiatry, Wrocław Medical University, Pasteura 10, 50-367, Wrocław, Poland
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Mazzoleni E, Vinceti M, Costanzini S, Garuti C, Adani G, Vinceti G, Zamboni G, Tondelli M, Galli C, Salemme S, Teggi S, Chiari A, Filippini T. Outdoor artificial light at night and risk of early-onset dementia: A case-control study in the Modena population, Northern Italy. Heliyon 2023; 9:e17837. [PMID: 37455959 PMCID: PMC10339013 DOI: 10.1016/j.heliyon.2023.e17837] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 05/15/2023] [Accepted: 06/28/2023] [Indexed: 07/18/2023] Open
Abstract
Background Dementia is a neurological syndrome characterized by severe cognitive impairment with functional impact on everyday life. It can be classified as young onset dementia (EOD) in case of symptom onset before 65, and late onset dementia (LOD). The purpose of this study is to assess the risk of dementia due to light pollution, and specifically outdoor artificial light at night (LAN). Methods Using a case-control design, we enrolled dementia patients newly-diagnosed in the province of Modena in the period 2017-2019 and a referent population from their caregivers. We geo-referenced the address of residence on the date of recruitment, provided it was stable for the previous five years. We assessed LAN exposure through 2015 nighttime luminance satellite images from the Visible Infrared Imaging Radiometer Suite (VIIRS). Using a logistic regression model adjusted for age, sex, and education, we calculated the risk of dementia associated with increasing LAN exposure, namely using <10 nW/cm2/sr as reference and considering ≥10-<40 nW/cm2/sr intermediate and ≥40 nW/cm2/sr high exposure, respectively We also implemented non-linear assessment using a spline regression model. Results We recruited 58 EOD cases, 34 LOD cases and 54 controls. Average LAN exposure levels overlapped for EOD cases and controls, while LOD cases showed higher levels. Compared with the lowest exposure, the risk of EOD associated with LAN was higher in the intermediate exposure (OR = 1.36, 95% CI 0.54-3.39), but not in the high exposure category (OR = 1.04, 95% CI 0.32-3.34). In contrast, the risk of LOD was positively associated with LAN exposure, with ORs of 2.58 (95% CI 0.26-25.97) and 3.50 (95% CI 0.32-38.87) in the intermediate and high exposure categories, respectively. The spline regression analysis showed substantial lack of association between LAN and EOD, while almost linear although highly imprecise association emerged for LOD. Conclusions Although the precision of the estimates was affected by the limited sample size and the study design did not allow us to exclude the presence of residual confounding, these results suggest a possible role of LAN in the etiology of dementia, particularly of its late-onset form.
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Affiliation(s)
- Elena Mazzoleni
- Environmental, Genetic and Nutritional Epidemiology Research Center (CREAGEN), Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Marco Vinceti
- Environmental, Genetic and Nutritional Epidemiology Research Center (CREAGEN), Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
- Department of Epidemiology, Boston University School of Public Health, Boston, MA, USA
| | - Sofia Costanzini
- DIEF Department of Engineering “Enzo Ferrari”, University of Modena and Reggio Emilia, Modena, Italy
| | - Caterina Garuti
- Environmental, Genetic and Nutritional Epidemiology Research Center (CREAGEN), Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
- Department of Medical and Surgical Sciences for Mothers, Children and Adults, Post Graduate School of Pediatrics, University of Modena and Reggio Emilia, Modena, Italy
| | - Giorgia Adani
- Environmental, Genetic and Nutritional Epidemiology Research Center (CREAGEN), Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Giulia Vinceti
- Department Center for Neurosciences and Neurotechnology, Department of Biomedical, Metabolic, and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
- Neurology Unit, Modena Policlinico-University Hospital, Modena, Italy
| | - Giovanna Zamboni
- Department Center for Neurosciences and Neurotechnology, Department of Biomedical, Metabolic, and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
- Neurology Unit, Modena Policlinico-University Hospital, Modena, Italy
| | - Manuela Tondelli
- Neurology Unit, Modena Policlinico-University Hospital, Modena, Italy
- Primary Care Department, Modena Local Health Authority, Modena, Italy
| | - Chiara Galli
- Neurology Unit, Modena Policlinico-University Hospital, Modena, Italy
- Primary Care Department, Modena Local Health Authority, Modena, Italy
- Department of Neuroscience, Psychology, Pharmacology and Child Health (NeuroFARBA), University of Florence, Florence, Italy
| | - Simone Salemme
- Department Center for Neurosciences and Neurotechnology, Department of Biomedical, Metabolic, and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
- Neurology Unit, Modena Policlinico-University Hospital, Modena, Italy
| | - Sergio Teggi
- DIEF Department of Engineering “Enzo Ferrari”, University of Modena and Reggio Emilia, Modena, Italy
| | - Annalisa Chiari
- Neurology Unit, Modena Policlinico-University Hospital, Modena, Italy
| | - Tommaso Filippini
- Environmental, Genetic and Nutritional Epidemiology Research Center (CREAGEN), Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
- School of Public Health, University of California Berkeley, Berkeley, CA, USA
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Cao M, Xu T, Yin D. Understanding light pollution: Recent advances on its health threats and regulations. J Environ Sci (China) 2023; 127:589-602. [PMID: 36522088 DOI: 10.1016/j.jes.2022.06.020] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 06/13/2022] [Accepted: 06/13/2022] [Indexed: 06/17/2023]
Abstract
The prevalence of artificial lights not only improves the lighting conditions for modern society, but also poses kinds of health threats to human health. Although there are regulations and standards concerning light pollution, few of them are based on the potential contribution of improper lighting to diseases. Therefore, a better understanding of the health threats induced by light pollution may promote risk assessment and better regulation of artificial lights, thereby a healthy lighting environment. This review is based on a careful collection of the latest papers from 2018 to 2022 about the health threats of light pollution, both epidemiologically and experimentally. In addition to summing up the novel associations of light pollution with obesity, mental disorders, cancer, etc., we highlight the toxicological mechanism of light pollution via circadian disruption, since light pollution directly interferes with the natural light-dark cycles, and damages the circadian photoentrainment of organisms. And by reviewing the alternations of clock genes and disturbance of melatonin homeostasis induced by artificial lights, we aim to excavate the profound impacts of light pollution based on accumulating studies, thus providing perspectives for future research and guiding relevant regulations and standards.
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Affiliation(s)
- Miao Cao
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Ting Xu
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
| | - Daqiang Yin
- Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
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Lu Y, Yin P, Wang J, Yang Y, Li F, Yuan H, Li S, Long Z, Zhou M. Light at night and cause-specific mortality risk in Mainland China: a nationwide observational study. BMC Med 2023; 21:95. [PMID: 36927443 PMCID: PMC10022237 DOI: 10.1186/s12916-023-02822-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 03/08/2023] [Indexed: 03/18/2023] Open
Abstract
BACKGROUND While epidemiological studies have found correlations between light at night (LAN) and health effects, none has so far investigated the impacts of LAN on population mortality yet. We aimed to estimate the relative risk for mortality from exposure to LAN in Mainland China. METHODS This time-stratified case-crossover nationwide study used NPP-VIIRS to obtain daily LAN data of Mainland China between 2015 and 2019. The daily mortality data were obtained from the Disease Surveillance Point System in China. Conditional Poisson regression models were applied to examine the relative risk (RR) for mortality along daily LAN in each county, then meta-analysis was performed to combine the county-specific estimates at the national or regional level. RESULTS A total of 579 counties with an average daily LAN of 4.39 (range: 1.02-35.46) were included in the main analysis. The overall RRs per 100 nW/cm2/sr increases in daily LAN were 1.08 (95%CI: 1.05-1.11) for all-cause mortality and 1.08 (95%CI: 1.05-1.11) for natural-cause mortality. A positive association between LAN and all natural cause-specific mortality was observed, of which the strongest effect was observed on mortality caused by neuron system disease (RR = 1.32, 95%CI: 1.14-1.52). The results were robust in both younger and old, as well as in males and females. The more pronounced effect of LAN was observed in median LAN-level regions. Combined with an exposure-response curve, our study suggests a non-linear association between LAN and mortality in China. CONCLUSIONS Our study shows LAN is associated with mortality in China, particularly for neuron system disease-related mortality. These findings have important implications for public health policy establishment to minimize the health consequences of light pollution.
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Affiliation(s)
- Yao Lu
- Clinical Research Center, the Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Peng Yin
- National Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Xicheng District, Beijing, 100050, China
| | - Jie Wang
- Department of Cardiology, The Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Yiping Yang
- Clinical Research Center, the Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Fei Li
- Department of Cardiology, The Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Hong Yuan
- Clinical Research Center, the Third Xiangya Hospital, Central South University, Changsha, 410013, China
| | - Shenxin Li
- Department of Surveying and Remote Sensing Science, School of Geosciences and Info-Physics, Central South University, Changsha, 410083, China
| | - Zheng Long
- National Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Xicheng District, Beijing, 100050, China
| | - Maigeng Zhou
- National Center for Chronic and Noncommunicable Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Xicheng District, Beijing, 100050, China.
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Neba Ambe GNN, Breda C, Bhambra AS, Arroo RRJ. Effect of the Citrus Flavone Nobiletin on Circadian Rhythms and Metabolic Syndrome. Molecules 2022; 27:molecules27227727. [PMID: 36431828 PMCID: PMC9695244 DOI: 10.3390/molecules27227727] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/06/2022] [Accepted: 11/07/2022] [Indexed: 11/11/2022] Open
Abstract
The importance of the circadian clock in maintaining human health is now widely acknowledged. Dysregulated and dampened clocks may be a common cause of age-related diseases and metabolic syndrome Thus, circadian clocks should be considered as therapeutic targets to mitigate disease symptoms. This review highlights a number of dietary compounds that positively affect the maintenance of the circadian clock. Notably the polymethoxyflavone nobiletin has shown some encouraging results in pre-clinical experiments. Although many more experiments are needed to fully elucidate its exact mechanism of action, it is a promising candidate with potential as a chronotherapeutic agent.
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Affiliation(s)
- Gael N. N. Neba Ambe
- Leicester School of Pharmacy, De Montfort University, The Gateway, Leicester LE1 9BH, UK
| | - Carlo Breda
- School of Allied Health Sciences, De Montfort University, The Gateway, Leicester LE1 9BH, UK
| | - Avninder Singh Bhambra
- School of Allied Health Sciences, De Montfort University, The Gateway, Leicester LE1 9BH, UK
| | - Randolph R. J. Arroo
- Leicester School of Pharmacy, De Montfort University, The Gateway, Leicester LE1 9BH, UK
- Correspondence:
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11
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Zhu B, Parsons T, Stensen W, Mjøen Svendsen JS, Fugelli A, Hodge JJL. DYRK1a Inhibitor Mediated Rescue of Drosophila Models of Alzheimer’s Disease-Down Syndrome Phenotypes. Front Pharmacol 2022; 13:881385. [PMID: 35928283 PMCID: PMC9345315 DOI: 10.3389/fphar.2022.881385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 06/23/2022] [Indexed: 11/13/2022] Open
Abstract
Alzheimer’s disease (AD) is the most common neurodegenerative disease which is becoming increasingly prevalent due to ageing populations resulting in huge social, economic, and health costs to the community. Despite the pathological processing of genes such as Amyloid Precursor Protein (APP) into Amyloid-β and Microtubule Associated Protein Tau (MAPT) gene, into hyperphosphorylated Tau tangles being known for decades, there remains no treatments to halt disease progression. One population with increased risk of AD are people with Down syndrome (DS), who have a 90% lifetime incidence of AD, due to trisomy of human chromosome 21 (HSA21) resulting in three copies of APP and other AD-associated genes, such as DYRK1A (Dual specificity tyrosine-phosphorylation-regulated kinase 1A) overexpression. This suggests that blocking DYRK1A might have therapeutic potential. However, it is still not clear to what extent DYRK1A overexpression by itself leads to AD-like phenotypes and how these compare to Tau and Amyloid-β mediated pathology. Likewise, it is still not known how effective a DYRK1A antagonist may be at preventing or improving any Tau, Amyloid-β and DYRK1a mediated phenotype. To address these outstanding questions, we characterised Drosophila models with targeted overexpression of human Tau, human Amyloid-β or the fly orthologue of DYRK1A, called minibrain (mnb). We found targeted overexpression of these AD-associated genes caused degeneration of photoreceptor neurons, shortened lifespan, as well as causing loss of locomotor performance, sleep, and memory. Treatment with the experimental DYRK1A inhibitor PST-001 decreased pathological phosphorylation of human Tau [at serine (S) 262]. PST-001 reduced degeneration caused by human Tau, Amyloid-β or mnb lengthening lifespan as well as improving locomotion, sleep and memory loss caused by expression of these AD and DS genes. This demonstrated PST-001 effectiveness as a potential new therapeutic targeting AD and DS pathology.
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Affiliation(s)
- Bangfu Zhu
- School of Physiology, Pharmacology and Neuroscience, Faculty of Life Science, University of Bristol, Bristol, United Kingdom
| | - Tom Parsons
- School of Physiology, Pharmacology and Neuroscience, Faculty of Life Science, University of Bristol, Bristol, United Kingdom
| | - Wenche Stensen
- Department of Chemistry, The Arctic University of Norway, Tromsø, Norway
- Pharmasum Therapeutics AS, ShareLab, Forskningsparken i Oslo, Oslo, Norway
| | - John S. Mjøen Svendsen
- Department of Chemistry, The Arctic University of Norway, Tromsø, Norway
- Pharmasum Therapeutics AS, ShareLab, Forskningsparken i Oslo, Oslo, Norway
| | - Anders Fugelli
- Pharmasum Therapeutics AS, ShareLab, Forskningsparken i Oslo, Oslo, Norway
| | - James J. L. Hodge
- School of Physiology, Pharmacology and Neuroscience, Faculty of Life Science, University of Bristol, Bristol, United Kingdom
- *Correspondence: James J. L. Hodge,
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12
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Dim Blue Light at Night Induces Spatial Memory Impairment in Mice by Hippocampal Neuroinflammation and Oxidative Stress. Antioxidants (Basel) 2022; 11:antiox11071218. [PMID: 35883709 PMCID: PMC9311634 DOI: 10.3390/antiox11071218] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/12/2022] [Accepted: 06/17/2022] [Indexed: 12/04/2022] Open
Abstract
Light pollution is one of the most serious public problems, especially the night light. However, the effect of dim blue light at night (dLAN-BL) on cognitive function is unclear. In this study, we evaluated the effects of exposure to dLAN-BL in C57BL/6J mice for 4 consecutive weeks. Our results showed dLAN-BL significantly impaired spatial learning and memory and increased plasma corticosterone level in mice. Consistent with these changes, we observed dLAN-BL significantly increased the numbers and activation of microglia and the levels of oxidative stress product MDA in the hippocampus, decreased the levels of antioxidant enzymes Glutathione peroxidase (GSH-Px), Superoxide dismutase (SOD), Gluathione reductase (Gsr), total antioxidants (T-AOC) and the number of neurons in the hippocampus, up-regulated the mRNA expression levels of IL6, TNF-α and the protein expression levels of iNOS, COX2, TLR4, p-p65, Cleaved-Caspase3 and BAX, and down-regulated the mRNA expression levels of IL4, IL10, Psd95, Snap25, Sirt1, Dcx and the protein expression level of BCL2. In vitro results further showed corticosterone (10uM)-induced BV2 cell activation and up-regulated content of IL6, TNF-α in the cell supernatant and the protein expression levels of iNOS, COX2, p-p65 in BV2 cells. Our findings suggested dLAN-BL up-regulated plasma corticosterone level and hippocampal microglia activation, which in turn caused oxidative stress and neuroinflammation, leading to neuronal loss and synaptic dysfunction, ultimately leading to spatial learning and memory dysfunction in mice.
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13
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Park H, Lee K. Prediction of suicidal ideation in shift workers compared to non-shift workers using machine learning techniques. J Affect Disord 2022; 307:125-132. [PMID: 35390350 DOI: 10.1016/j.jad.2022.03.076] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/26/2022] [Accepted: 03/31/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND Shift work can affect sleep and increase the risk of suicide. This study attempted to predict suicidal ideation according to shift work by using machine learning techniques. METHODS We analyzed a total of 43,095 data conducted by using the 10-year Korean National Health and Nutrition Examination Survey (KHANES). Shift workers and daytime workers were categorized and analyzed using random forest (RF) and decision tree (DT) techniques of machine learning techniques. RESULTS Shift workers were more than twice as likely to have suicidal ideation as daytime workers. The RF model showed an accuracy of 91.6% for shift workers and 98% for daytime workers. In the DT technique, the rate of suicidal ideation was the highest among shift workers (82.7%) when they were depressed and had an EuroQol-5 Dimension (EQ-5D) score of less than 0.71. LIMITATIONS Shift work type was evaluated questionnaire and based on screening data, it was not possible to reflect recent changes in the work type and we evaluated for only suicidal ideation for suicide risk factors. CONCLUSION The variables influencing the suicide risk of shift workers and daytime workers differ. In the case of shift workers, negative factors such as depression and low quality of life are risk factors for suicide. Efforts are needed to reduce risk factors through administrative and policy interventions to manage workers' health by early screening.
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Affiliation(s)
- Hwanjin Park
- Department of Occupational & Environmental Medicine, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Kounseok Lee
- Department of Psychiatry, Hanyang University Medical Center, Seoul, Republic of Korea.
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14
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Prakash P, Pradhan AK, Sheeba V. Hsp40 overexpression in pacemaker neurons delays circadian dysfunction in a Drosophila model of Huntington's disease. Dis Model Mech 2022; 15:275556. [PMID: 35645202 PMCID: PMC9254228 DOI: 10.1242/dmm.049447] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 05/24/2022] [Indexed: 12/13/2022] Open
Abstract
Circadian disturbances are early features of neurodegenerative diseases, including Huntington's disease (HD). Emerging evidence suggests that circadian decline feeds into neurodegenerative symptoms, exacerbating them. Therefore, we asked whether known neurotoxic modifiers can suppress circadian dysfunction. We performed a screen of neurotoxicity-modifier genes to suppress circadian behavioural arrhythmicity in a Drosophila circadian HD model. The molecular chaperones Hsp40 and HSP70 emerged as significant suppressors in the circadian context, with Hsp40 being the more potent mitigator. Upon Hsp40 overexpression in the Drosophila circadian ventrolateral neurons (LNv), the behavioural rescue was associated with neuronal rescue of loss of circadian proteins from small LNv soma. Specifically, there was a restoration of the molecular clock protein Period and its oscillations in young flies and a long-lasting rescue of the output neuropeptide Pigment dispersing factor. Significantly, there was a reduction in the expanded Huntingtin inclusion load, concomitant with the appearance of a spot-like Huntingtin form. Thus, we provide evidence implicating the neuroprotective chaperone Hsp40 in circadian rehabilitation. The involvement of molecular chaperones in circadian maintenance has broader therapeutic implications for neurodegenerative diseases. This article has an associated First Person interview with the first author of the paper. Summary: This study shows, for the first time, a neuroprotective role of chaperone Hsp40 in suppressing circadian dysfunction associated with Huntington's disease in a Drosophila model.
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Affiliation(s)
- Pavitra Prakash
- Evolutionary and Integrative Biology Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore 560064, India
| | - Arpit Kumar Pradhan
- Neuroscience Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore 560064, India
| | - Vasu Sheeba
- Evolutionary and Integrative Biology Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore 560064, India.,Neuroscience Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Bangalore 560064, India
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15
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Zhang MY, Lear BC, Allada R. The microtubule associated protein tau suppresses the axonal distribution of PDF neuropeptide and mitochondria in circadian clock neurons. Hum Mol Genet 2021; 31:1141-1150. [PMID: 34750631 DOI: 10.1093/hmg/ddab303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 09/27/2021] [Accepted: 10/13/2021] [Indexed: 11/12/2022] Open
Abstract
Disrupted circadian rhythms is a prominent feature of multiple neurodegenerative diseases. Yet mechanisms linking Tau to rhythmic behavior remain unclear. Here we find that expression of a phosphomimetic human Tau mutant (TauE14) in Drosophila circadian pacemaker neurons disrupts free-running rhythmicity. While cell number and oscillations of the core clock protein PERIOD are unaffected in the small LNv (sLNv) neurons important for free running rhythms, we observe a near complete loss of the major LNv neuropeptide pigment dispersing factor (PDF) in the dorsal axonal projections of the sLNvs. This was accompanied by a ~ 50% reduction in the area of the dorsal terminals and a modest decrease in cell body PDF levels. Expression of wild-type Tau also reduced axonal PDF levels but to a lesser extent than TauE14. TauE14 also induces a complete loss of mitochondria from these sLNv projections. However, mitochondria were increased in sLNv cell bodies in TauE14 flies. These results suggest that TauE14 disrupts axonal transport of neuropeptides and mitochondria in circadian pacemaker neurons, providing a mechanism by which Tau can disrupt circadian behavior prior to cell loss.
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Affiliation(s)
- Melanie Y Zhang
- Department of Neurobiology, Northwestern University, Evanston, IL, 60208, USA
| | - Bridget C Lear
- Department of Neurobiology, Northwestern University, Evanston, IL, 60208, USA
| | - Ravi Allada
- Department of Neurobiology, Northwestern University, Evanston, IL, 60208, USA
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16
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Giong HK, Subramanian M, Yu K, Lee JS. Non-Rodent Genetic Animal Models for Studying Tauopathy: Review of Drosophila, Zebrafish, and C. elegans Models. Int J Mol Sci 2021; 22:8465. [PMID: 34445171 PMCID: PMC8395099 DOI: 10.3390/ijms22168465] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/03/2021] [Accepted: 08/04/2021] [Indexed: 12/12/2022] Open
Abstract
Tauopathy refers to a group of progressive neurodegenerative diseases, including frontotemporal lobar degeneration and Alzheimer's disease, which correlate with the malfunction of microtubule-associated protein Tau (MAPT) due to abnormal hyperphosphorylation, leading to the formation of intracellular aggregates in the brain. Despite extensive efforts to understand tauopathy and develop an efficient therapy, our knowledge is still far from complete. To find a solution for this group of devastating diseases, several animal models that mimic diverse disease phenotypes of tauopathy have been developed. Rodents are the dominating tauopathy models because of their similarity to humans and established disease lines, as well as experimental approaches. However, powerful genetic animal models using Drosophila, zebrafish, and C. elegans have also been developed for modeling tauopathy and have contributed to understanding the pathophysiology of tauopathy. The success of these models stems from the short lifespans, versatile genetic tools, real-time in-vivo imaging, low maintenance costs, and the capability for high-throughput screening. In this review, we summarize the main findings on mechanisms of tauopathy and discuss the current tauopathy models of these non-rodent genetic animals, highlighting their key advantages and limitations in tauopathy research.
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Affiliation(s)
- Hoi-Khoanh Giong
- Disease Target Structure Research Center, KRIBB, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea; (H.-K.G.); (M.S.)
- KRIBB School, University of Science and Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea
- Dementia DTC R&D Convergence Program, KIST, Hwarang-ro 14 gil 5, Seongbuk-gu, Seoul 02792, Korea
| | - Manivannan Subramanian
- Disease Target Structure Research Center, KRIBB, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea; (H.-K.G.); (M.S.)
- Dementia DTC R&D Convergence Program, KIST, Hwarang-ro 14 gil 5, Seongbuk-gu, Seoul 02792, Korea
| | - Kweon Yu
- Disease Target Structure Research Center, KRIBB, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea; (H.-K.G.); (M.S.)
- KRIBB School, University of Science and Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea
- Dementia DTC R&D Convergence Program, KIST, Hwarang-ro 14 gil 5, Seongbuk-gu, Seoul 02792, Korea
| | - Jeong-Soo Lee
- Disease Target Structure Research Center, KRIBB, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea; (H.-K.G.); (M.S.)
- KRIBB School, University of Science and Technology, 125 Gwahak-ro, Yuseong-gu, Daejeon 34141, Korea
- Dementia DTC R&D Convergence Program, KIST, Hwarang-ro 14 gil 5, Seongbuk-gu, Seoul 02792, Korea
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17
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Goh GH, Blache D, Mark PJ, Kennington WJ, Maloney SK. Daily temperature cycles prolong lifespan and have sex-specific effects on peripheral clock gene expression in Drosophila melanogaster. J Exp Biol 2021; 224:237805. [PMID: 33758022 DOI: 10.1242/jeb.233213] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 03/17/2021] [Indexed: 12/14/2022]
Abstract
Circadian rhythms optimize health by coordinating the timing of physiological processes to match predictable daily environmental challenges. The circadian rhythm of body temperature is thought to be an important modulator of molecular clocks in peripheral tissues, but how daily temperature cycles affect physiological function is unclear. Here, we examined the effect of constant temperature (Tcon, 25°C) and cycling temperature (Tcyc, 28°C:22°C during light:dark) paradigms on lifespan of Drosophila melanogaster, and the expression of clock genes, heat shock protein 83 (Hsp83), Frost (Fst) and senescence marker protein-30 (smp-30). Male and female D. melanogaster housed at Tcyc had longer median lifespans than those housed at Tcon. Tcyc induced robust Hsp83 rhythms and rescued the age-related decrease in smp-30 expression that was observed in flies at Tcon, potentially indicating an increased capacity to cope with age-related cellular stress. Ageing under Tcon led to a decrease in the amplitude of expression of all clock genes in the bodies of male flies, except for cyc, which was non-rhythmic, and for per and cry in female flies. Strikingly, housing under Tcyc conditions rescued the age-related decrease in amplitude of all clock genes, and generated rhythmicity in cyc expression, in the male flies, but not the female flies. The results suggest that ambient temperature rhythms modulate D. melanogaster lifespan, and that the amplitude of clock gene expression in peripheral body clocks may be a potential link between temperature rhythms and longevity in male D. melanogaster. Longevity due to Tcyc appeared predominantly independent of clock gene amplitude in female D. melanogaster.
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Affiliation(s)
- Grace H Goh
- School of Human Sciences, University of Western Australia, Crawley, WA 6009, Australia
| | - Dominique Blache
- School of Agriculture and Environment, University of Western Australia, Crawley, WA 6009, Australia
| | - Peter J Mark
- School of Human Sciences, University of Western Australia, Crawley, WA 6009, Australia
| | - W Jason Kennington
- School of Biological Sciences, University of Western Australia, Crawley, WA 6009, Australia
| | - Shane K Maloney
- School of Human Sciences, University of Western Australia, Crawley, WA 6009, Australia
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18
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Abstract
The circadian clock controls daily rhythms in animal physiology, metabolism, and behavior, such as the sleep‐wake cycle. Disruption of circadian rhythms has been revealed in many diseases including neurodegenerative disorders. Interestingly, patients with many neurodegenerative diseases often show problems with circadian clocks even years before other symptoms develop. Here we review the recent studies identifying the association between circadian rhythms and several major neurodegenerative disorders. Early intervention of circadian rhythms may benefit the treatment of neurodegeneration.
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Affiliation(s)
| | - Yong Zhang
- Department of Biology, University of Nevada Reno, 1664 N Virginia St, Reno, NV 89557, U.S.A
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19
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Yan R, Ho C, Zhang X. Interaction between Tea Polyphenols and Intestinal Microbiota in Host Metabolic Diseases from the Perspective of the Gut–Brain Axis. Mol Nutr Food Res 2020; 64:e2000187. [DOI: 10.1002/mnfr.202000187] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 05/29/2020] [Indexed: 12/17/2022]
Affiliation(s)
- Ruonan Yan
- Department of Food Science and EngineeringNingbo University Ningbo 315211 P. R. China
| | - Chi‐Tang Ho
- Department of Food ScienceRutgers University New Brunswick NJ 08901 USA
| | - Xin Zhang
- Department of Food Science and EngineeringNingbo University Ningbo 315211 P. R. China
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20
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Xu F, Kula-Eversole E, Iwanaszko M, Hutchison AL, Dinner A, Allada R. Circadian Clocks Function in Concert with Heat Shock Organizing Protein to Modulate Mutant Huntingtin Aggregation and Toxicity. Cell Rep 2020; 27:59-70.e4. [PMID: 30943415 PMCID: PMC7237104 DOI: 10.1016/j.celrep.2019.03.015] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 01/24/2019] [Accepted: 03/02/2019] [Indexed: 01/08/2023] Open
Abstract
Neurodegenerative diseases commonly involve the disruption of circadian rhythms. Studies indicate that mutant Huntingtin (mHtt), the cause of Huntington’s disease (HD), disrupts circadian rhythms often before motor symptoms are evident. Yet little is known about the molecular mechanisms by which mHtt impairs circadian rhythmicity and whether circadian clocks can modulate HD pathogenesis. To address this question, we used a Drosophila HD model. We found that both environmental and genetic perturbations of the circadian clock alter mHtt-mediated neurodegeneration. To identify potential genetic pathways that mediate these effects, we applied a behavioral platform to screen for clock-regulated HD suppressors, identifying a role for Heat Shock Protein 70/90 Organizing Protein (Hop). Hop knockdown paradoxically reduces mHtt aggregation and toxicity. These studies demonstrate a role for the circadian clock in a neurodegenerative disease model and reveal a clock-regulated molecular and cellular pathway that links clock function to neurodegenerative disease. Disruption of circadian rhythms is frequently observed across a range of neurodegenerative diseases. Here, Xu et al. demonstrate that perturbation of circadian clocks alters the toxicity of the mutant Huntingtin protein, the cause of Huntington’s disease (HD). Moreover, they reveal a key mechanistic link between the clock and HD.
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Affiliation(s)
- Fangke Xu
- Department of Neurobiology, Northwestern University, Evanston, IL, USA
| | | | - Marta Iwanaszko
- Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Alan L Hutchison
- Medical Scientist Training Program, University of Chicago, Chicago, IL, USA
| | - Aaron Dinner
- James Franck Institute, University of Chicago, Chicago, IL, USA
| | - Ravi Allada
- Department of Neurobiology, Northwestern University, Evanston, IL, USA.
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21
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Bolus H, Crocker K, Boekhoff-Falk G, Chtarbanova S. Modeling Neurodegenerative Disorders in Drosophila melanogaster. Int J Mol Sci 2020; 21:E3055. [PMID: 32357532 PMCID: PMC7246467 DOI: 10.3390/ijms21093055] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/14/2020] [Accepted: 04/21/2020] [Indexed: 12/12/2022] Open
Abstract
Drosophila melanogaster provides a powerful genetic model system in which to investigate the molecular mechanisms underlying neurodegenerative diseases. In this review, we discuss recent progress in Drosophila modeling Alzheimer's Disease, Parkinson's Disease, Amyotrophic Lateral Sclerosis (ALS), Huntington's Disease, Ataxia Telangiectasia, and neurodegeneration related to mitochondrial dysfunction or traumatic brain injury. We close by discussing recent progress using Drosophila models of neural regeneration and how these are likely to provide critical insights into future treatments for neurodegenerative disorders.
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Affiliation(s)
- Harris Bolus
- Department of Biological Sciences, University of Alabama, Tuscaloosa, AL 35487, USA;
| | - Kassi Crocker
- Genetics Graduate Training Program, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI 53705, USA;
- Department of Cell and Regenerative Biology, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI 53705, USA
| | - Grace Boekhoff-Falk
- Department of Cell and Regenerative Biology, School of Medicine and Public Health, University of Wisconsin–Madison, Madison, WI 53705, USA
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22
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Li H, Zhang L, Qin C. Current state of research on non-human primate models of Alzheimer's disease. Animal Model Exp Med 2019; 2:227-238. [PMID: 31942555 PMCID: PMC6930996 DOI: 10.1002/ame2.12092] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Revised: 11/11/2019] [Accepted: 11/12/2019] [Indexed: 12/12/2022] Open
Abstract
With the increasingly serious aging of the global population, dementia has already become a severe clinical challenge on a global scale. Dementia caused by Alzheimer's disease (AD) is the most common form of dementia observed in the elderly, but its pathogenetic mechanism has still not been fully elucidated. Furthermore, no effective treatment strategy has been developed to date, despite considerable efforts. This can be mainly attributed to the paucity of animal models of AD that are sufficiently similar to humans. Among the presently established animal models, non-human primates share the closest relationship with humans, and their neural anatomy and neurobiology share highly similar characteristics with those of humans. Thus, there is no doubt that these play an irreplaceable role in AD research. Considering this, the present literature on non-human primate models of AD was reviewed to provide a theoretical basis for future research.
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Affiliation(s)
- Hong‐Wei Li
- NHC Key Laboratory of Human Disease Comparative MedicinePeking Union Medical College (PUMC)BeijingChina
- Key Laboratory of Human Diseases Animal ModelState Administration of Traditional Chinese MedicinePeking Union Medical College (PUMC)BeijingChina
- The Institute of Laboratory Animal SciencesChinese Academy of Medical Sciences (CAMS)Peking Union Medical College (PUMC)BeijingChina
- Ministry of HealthComparative Medicine CenterPeking Union Medical College (PUMC)BeijingChina
| | - Ling Zhang
- NHC Key Laboratory of Human Disease Comparative MedicinePeking Union Medical College (PUMC)BeijingChina
- Key Laboratory of Human Diseases Animal ModelState Administration of Traditional Chinese MedicinePeking Union Medical College (PUMC)BeijingChina
- The Institute of Laboratory Animal SciencesChinese Academy of Medical Sciences (CAMS)Peking Union Medical College (PUMC)BeijingChina
- Ministry of HealthComparative Medicine CenterPeking Union Medical College (PUMC)BeijingChina
| | - Chuan Qin
- NHC Key Laboratory of Human Disease Comparative MedicinePeking Union Medical College (PUMC)BeijingChina
- Key Laboratory of Human Diseases Animal ModelState Administration of Traditional Chinese MedicinePeking Union Medical College (PUMC)BeijingChina
- The Institute of Laboratory Animal SciencesChinese Academy of Medical Sciences (CAMS)Peking Union Medical College (PUMC)BeijingChina
- Ministry of HealthComparative Medicine CenterPeking Union Medical College (PUMC)BeijingChina
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23
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Shen J, Tower J. Effects of light on aging and longevity. Ageing Res Rev 2019; 53:100913. [PMID: 31154014 DOI: 10.1016/j.arr.2019.100913] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Revised: 05/17/2019] [Accepted: 05/29/2019] [Indexed: 12/11/2022]
Abstract
Increasing evidence suggests an important role for light in regulation of aging and longevity. UV radiation is a mutagen that can promote aging and decrease longevity. In contrast, NIR light has shown protective effects in animal disease models. In invertebrates, visible light can shorten or extend lifespan, depending on the intensity and wavelength composition. Visible light also impacts human health, including retina function, sleep, cancer and psychiatric disorders. Possible mechanisms of visible light include: controlling circadian rhythms, inducing oxidative stress, and acting through the retina to affect neuronal circuits and systems. Changes in artificial lighting (e.g., LEDs) may have implications for human health. It will be important to further explore the mechanisms of how light affects aging and longevity, and how light affects human health.
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24
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Xie Y, Tang Q, Chen G, Xie M, Yu S, Zhao J, Chen L. New Insights Into the Circadian Rhythm and Its Related Diseases. Front Physiol 2019; 10:682. [PMID: 31293431 PMCID: PMC6603140 DOI: 10.3389/fphys.2019.00682] [Citation(s) in RCA: 140] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 05/13/2019] [Indexed: 12/18/2022] Open
Abstract
Circadian rhythms (CR) are a series of endogenous autonomous oscillators generated by the molecular circadian clock which acting on coordinating internal time with the external environment in a 24-h daily cycle. The circadian clock system is a major regulatory factor for nearly all physiological activities and its disorder has severe consequences on human health. CR disruption is a common issue in modern society, and researches about people with jet lag or shift works have revealed that CR disruption can cause cognitive impairment, psychiatric illness, metabolic syndrome, dysplasia, and cancer. In this review, we summarized the synchronizers and the synchronization methods used in experimental research, and introduced CR monitoring and detection methods. Moreover, we evaluated conventional CR databases, and analyzed experiments that characterized the underlying causes of CR disorder. Finally, we further discussed the latest developments in understanding of CR disruption, and how it may be relevant to health and disease. Briefly, this review aimed to synthesize previous studies to aid in future studies of CR and CR-related diseases.
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Affiliation(s)
- Yanling Xie
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qingming Tang
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Guangjin Chen
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Mengru Xie
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shaoling Yu
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jiajia Zhao
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lili Chen
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Abbott SM, Malkani RG, Zee PC. Circadian disruption and human health: A bidirectional relationship. Eur J Neurosci 2019; 51:567-583. [PMID: 30549337 DOI: 10.1111/ejn.14298] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 11/09/2018] [Accepted: 11/19/2018] [Indexed: 12/22/2022]
Abstract
Circadian rhythm disorders have been classically associated with disorders of abnormal timing of the sleep-wake cycle, however circadian dysfunction can play a role in a wide range of pathology, ranging from the increased risk for cardiometabolic disease and malignancy in shift workers, prompting the need for a new field focused on the larger concept of circadian medicine. The relationship between circadian disruption and human health is bidirectional, with changes in circadian amplitude often preceding the classical symptoms of neurodegenerative disorders. As our understanding of the importance of circadian dysfunction in disease grows, we need to develop better clinical techniques for identifying circadian rhythms and also develop circadian based strategies for disease management. Overall this review highlights the need to bring the concept of time to all aspects of medicine, emphasizing circadian medicine as a prime example of both personalized and precision medicine.
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Affiliation(s)
- Sabra M Abbott
- Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Roneil G Malkani
- Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Phyllis C Zee
- Department of Neurology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
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Solovev IA, Shaposhnikov MV, Moskalev AA. Genetic mechanisms of the influence of light and phototransduction on Drosophila melanogaster lifespan. Vavilovskii Zhurnal Genet Selektsii 2018. [DOI: 10.18699/vj18.429] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The light of the visible spectrum (with wavelengths of 380-780 nm) is one of the fundamental abiotic factors to which organisms have been adapting since the start of biological evolution on the Earth. Numerous literature sources establish a connection between the duration of exposure to daylight, carcinogenesis and longevity, convincingly showing a significant reduction in the incidence of cancer in blind people, as well as in animal models. On the other hand, the stimulating nature of the effect of continuous illumination on reproductive function was noted, in particular, the effects of increasing the fecundity of females of various species are known. Increase in motor activity and, as a result, in metabolic rate and thermogenesis during permanent exposure to light also reduces the body's energy reserves and lifespan. In principle, in the context of aging, not only the exposure time, but also the age at the onset of exposure to constant illumination matter, the reverse effects are valid for the maintenance of experimental animals in the constant darkness. Over the long period of the evolution of light signal transduction systems, many mechanisms have emerged that allow to form an adequate response of the organism to illumination, modulating the highly conservative signaling cascades, including those associated with aging and lifespan (FOXO, SIRT1, NF-kB, mTOR/S6k, PPARa, etc). In this review, we consider the relationship between lifespan, photoregimens, and also the expression of the genes encoding the phototransduction cascade and the circadian oscillator elements of animal cells. In the present paper, basic transducers of light and other signals, such as the family of TRP receptors, G proteins, phospholipase C, and others, are considered in the context of aging and longevity. A relationship between the mechanisms of thermoreception, the temperature synchronization of the circadian oscillator and the life span is established in the review. Analysis of experimental data obtained from the Drosophila melano-gaster model allowed us to formulate the hypothesis of age-dependent photoresistance - a gradual decrease in the expression of genes associated with phototransduction and circadian oscillators, leading to deterioration in the ability to adapt to the photoregimen and to the increase in the rate of aging.
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Affiliation(s)
- I. A. Solovev
- Institute of Biology of Komi Scientific Center, UrB RAS; Pitirim Sorokin Syktyvkar State University, Department of Ecology, Institute of Natural Sciences
| | | | - A. A. Moskalev
- Institute of Biology of Komi Scientific Center, UrB RAS; Pitirim Sorokin Syktyvkar State University, Department of Ecology, Institute of Natural Sciences; Moscow Institute of Physics and Technology; Engelhardt Institute of Molecular Biology, RAS; Vavilov Institute of General Genetics, RAS
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