Carlos C. Flores, Nickolas A. Pasetto, Hongyang Wang, Alexander G. Dimitrov, Jon F. Davis, Zhihua Jiang, Christopher J. Davis, Jason R. Gerstner
{"title":"Sleep and diurnal alternative polyadenylation sites associated with human APA-linked brain disorders","authors":"Carlos C. Flores, Nickolas A. Pasetto, Hongyang Wang, Alexander G. Dimitrov, Jon F. Davis, Zhihua Jiang, Christopher J. Davis, Jason R. Gerstner","doi":"10.1038/s44323-024-00012-2","DOIUrl":"10.1038/s44323-024-00012-2","url":null,"abstract":"Disruption of sleep and circadian rhythms are a comorbid feature of many pathologies, and can negatively influence many health conditions, including neurodegenerative disease, metabolic illness, cancer, and various neurological disorders. Genetic association studies linking sleep and circadian disturbances with disease susceptibility have mainly focused on changes in gene expression due to mutations, such as single-nucleotide polymorphisms. The interaction between sleep and/or circadian rhythms with the use of Alternative Polyadenylation (APA) has been largely undescribed, particularly in the context of other disorders. APA generates transcript isoforms by utilizing various polyadenylation sites (PASs) from the same gene affecting its mRNA translation, stability, localization, and subsequent function. Here we identified unique APAs expressed in rat brain over time-of-day, immediately following sleep deprivation, and the subsequent recovery period. From these data, we performed a secondary analysis of these sleep- or time-of-day associated PASs with recently described APA-linked human brain disorder susceptibility genes.","PeriodicalId":501704,"journal":{"name":"npj Biological Timing and Sleep","volume":" ","pages":"1-12"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44323-024-00012-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142566005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Malena Mul Fedele, Leandro P. Casiraghi, Santiago A. Plano, Giannina Bellone, Diego A. Golombek, Daniel E. Vigo
{"title":"Bridging the gap: examining circadian biology and fatigue alongside work schedules","authors":"Malena Mul Fedele, Leandro P. Casiraghi, Santiago A. Plano, Giannina Bellone, Diego A. Golombek, Daniel E. Vigo","doi":"10.1038/s44323-024-00011-3","DOIUrl":"10.1038/s44323-024-00011-3","url":null,"abstract":"We compared three different work schedules in a large oil company: 1) two days of 12 h of daytime shifts followed by two consecutive 12 h night shifts, followed by four work-free days (“2 x 2 x 4”), 2) four consecutive 12 h daytime shifts and four consecutive 12 h night shifts, flanked by four work-free days (“4 x 4 x 4”), 3) a non-rotating schedule involving continuous 12 h daytime shifts during 40 days (“fixed 12 h”). We measured wrist-actigraphy, peripheral temperature rhythms, and subjective self-reports regarding fatigue, somnolence, and psycho-affective features. Sleep duration on the resting period was significantly less than the recommended 7 h. The “2 x 2 x 4” schedule resulted in decreased sleep regularity and increased circadian disruption, higher levels of insomnia, increased fatigue impact, lower alertness levels, and heightened symptoms of depression associated with more nocturnal sleep time after diurnal work. Our findings indicate that health and safety vary depending on the type of schedule employed.","PeriodicalId":501704,"journal":{"name":"npj Biological Timing and Sleep","volume":" ","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44323-024-00011-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142566008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Viviane Akemi Kakazu, Marcia Assis, Andrea Bacelar, Andréia Gomes Bezerra, Giovanna Lira Rosa Ciutti, Silvia Gonçalves Conway, José Carlos Fernandes Galduróz, Luciano F. Drager, Mariana Pery Khoury, Ingrid Porto Araújo Leite, Ygor de Matos Luciano, Dalva Poyares, Sergio Tufik, Gabriel Natan Pires
{"title":"Insomnia and its treatments—trend analysis and publication profile of randomized clinical trials","authors":"Viviane Akemi Kakazu, Marcia Assis, Andrea Bacelar, Andréia Gomes Bezerra, Giovanna Lira Rosa Ciutti, Silvia Gonçalves Conway, José Carlos Fernandes Galduróz, Luciano F. Drager, Mariana Pery Khoury, Ingrid Porto Araújo Leite, Ygor de Matos Luciano, Dalva Poyares, Sergio Tufik, Gabriel Natan Pires","doi":"10.1038/s44323-024-00014-0","DOIUrl":"10.1038/s44323-024-00014-0","url":null,"abstract":"This study aimed to describe the publication profile of randomized controlled trials (RCTs) for insomnia. A systematic review of RCTs regarding interventions for non-comorbid insomnia in adults retrieved 132 RCTs: 58 related to pharmacological treatments, 71 to non-pharmacological treatments, and 3 to both interventions. The treatments with the biggest publication profile were digital CBT-I (dCBT-I) (n = 35), in-person CBT-I (n = 28) and zolpidem (n = 22). Regarding dCBT-I, the median publication year is 2019, with 1.13 ± 1.91 RCTs published per year. Regarding zolpidem, the median publication year is 2008, with 0.71 ± 0.97 RCTs per year. Regarding in-person CBT-I, the median publication year is 2018, with 0.90 ± 1.14 RCTs per year. The majority of the available RCTs are on non-pharmacological interventions, particularly CBT-I (mostly in the 2000s) and dCBT-I (mostly in the last decade), although presenting a reduced methodological quality in comparison to pharmacological interventions. These data suggest an increasing focus on non-pharmacological interventions for insomnia.","PeriodicalId":501704,"journal":{"name":"npj Biological Timing and Sleep","volume":" ","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44323-024-00014-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142566013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pureum Kim, Nicholas Garner, Annaleis Tatkovic, Rex Parsons, Prasad Chunduri, Jana Vukovic, Michael Piper, Martina Pfeffer, Marco Weiergräber, Henrik Oster, Oliver Rawashdeh
{"title":"Melatonin’s role in the timing of sleep onset is conserved in nocturnal mice","authors":"Pureum Kim, Nicholas Garner, Annaleis Tatkovic, Rex Parsons, Prasad Chunduri, Jana Vukovic, Michael Piper, Martina Pfeffer, Marco Weiergräber, Henrik Oster, Oliver Rawashdeh","doi":"10.1038/s44323-024-00013-1","DOIUrl":"10.1038/s44323-024-00013-1","url":null,"abstract":"Melatonin supplementation strengthens non‐restorative sleep rhythms and its temporal alignment in both humans and night-active rodents. Of note, although the sleep cycle is reversed in day-active and night-active (nocturnal) mammals, both, produce melatonin at night under the control of the circadian clock. The effects of exogenous melatonin on sleep and sleepiness are relatively clear, but its endogenous role in sleep, particularly, in timing sleep onset (SO), remains poorly understood. We show in nocturnal mice that the increases in mid-nighttime sleep episodes, and the mid-nighttime decline in activity, are coupled to nighttime melatonin signaling. Furthermore, we show that endogenous melatonin modulates SO by reducing the threshold for wake-to-sleep transitioning. Such link between melatonin and SO timing may explain phenomena such as increased sleep propensity in circadian rhythm sleep disorders and chronic insomnia in patients with severely reduced nocturnal melatonin levels. Our findings demonstrate that melatonin’s role in sleep is evolutionarily conserved, effectively challenging the argument that melatonin cannot play a major role in sleep regulation in nocturnal mammals, where the main activity phase coincides with high melatonin levels.","PeriodicalId":501704,"journal":{"name":"npj Biological Timing and Sleep","volume":" ","pages":"1-13"},"PeriodicalIF":0.0,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44323-024-00013-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142566009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Manuel Spitschan, Laura Kervezee, Renske Lok, Elise McGlashan, Raymond P. Najjar
{"title":"How stepping out helped us tune in: finding space and time to think as an early career researcher","authors":"Manuel Spitschan, Laura Kervezee, Renske Lok, Elise McGlashan, Raymond P. Najjar","doi":"10.1038/s44323-024-00010-4","DOIUrl":"10.1038/s44323-024-00010-4","url":null,"abstract":"The transition from postdoc to junior faculty is exciting and uniquely challenging. On one hand, it allows for increased creative freedom and the opportunity to grow into an independent scientist. On the other hand, it comes with increasing administrative responsibilities, feelings of isolation, and high pressure to perform. The result is an environment that can leave very limited time for creative thinking and reflection. Here, we describe how participating in a program that allowed us to step out of our routine and work together helped us become more independent—and regain time to think.","PeriodicalId":501704,"journal":{"name":"npj Biological Timing and Sleep","volume":" ","pages":"1-2"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44323-024-00010-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142360086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bryan R. Alava, Andrew R. Morris, Andrew C. Liu, Jose F. Abisambra, Karyn A. Esser
{"title":"AAV8-P301L tau expression confers age-related disruptions in sleep quantity and timing","authors":"Bryan R. Alava, Andrew R. Morris, Andrew C. Liu, Jose F. Abisambra, Karyn A. Esser","doi":"10.1038/s44323-024-00009-x","DOIUrl":"10.1038/s44323-024-00009-x","url":null,"abstract":"Sleep timing and quantity disturbances persist in tauopathy patients. This has been studied in transgenic models of primary tau neuropathology using traditional electroencephalograms (EEGs) and more recently, the PiezoSleep Mouse Behavioral Tracking System. Here, we generated a primary tauopathy model using an intracerebroventricular injection of human mutant hSyn-P301L-tau, using adeno-associated virus of serotype 8 (AAV8). We discovered distinctions in sleep architecture with altered quantity and timing in AAV8-P301L tau expressing mice of both sexes using the noninvasive PiezoSleep System. The AAV8-P301L tau mice exhibit striking age-related increases in sleep duration specifically at the active phase onset, suggesting a critical and sensitive time-of-day for tauopathy related sleep disturbances to occur. Since our findings show sleep behavior changes at specific transitional periods of the day, tau neuropathology may impact normal diurnal variation in biological processes, which should be explored using the AAV8-P301L tauopathy model.","PeriodicalId":501704,"journal":{"name":"npj Biological Timing and Sleep","volume":" ","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44323-024-00009-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142360083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Emerson M. Wickwire, Jacob Collen, Vincent F. Capaldi II, Zhiwei Zhao, Scott G. Williams, Connie L. Thomas, Samson Z. Assefa, Jennifer S. Albrecht, Shuo Chen
{"title":"Prior-night sleep predicts next-day symptoms over ten days among military personnel with sleep problems","authors":"Emerson M. Wickwire, Jacob Collen, Vincent F. Capaldi II, Zhiwei Zhao, Scott G. Williams, Connie L. Thomas, Samson Z. Assefa, Jennifer S. Albrecht, Shuo Chen","doi":"10.1038/s44323-024-00008-y","DOIUrl":"10.1038/s44323-024-00008-y","url":null,"abstract":"This study employed remote monitoring/ecological momentary assessment methods to test the hypothesis that prior-night sleep is associated with next-day symptoms. Military personnel with sleep problems (N = 270) completed daily sleep diaries and twice-daily symptom surveys via smartphone and wore a commercial wearable for ten days. In lagged analyses controlling for age and sex, prior-night sleep was robustly associated with next-day symptoms. Findings support remote approaches to assess sleep and next-day symptoms.","PeriodicalId":501704,"journal":{"name":"npj Biological Timing and Sleep","volume":" ","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44323-024-00008-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142360084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Chronobiotic and cytoprotective activity of melatonin in the cardiovascular system. Doses matter","authors":"Daniel P. Cardinali, Daniel E. Vigo","doi":"10.1038/s44323-024-00007-z","DOIUrl":"10.1038/s44323-024-00007-z","url":null,"abstract":"A circadian disruption, manifested by disturbed sleep and low-grade inflammation, is commonly seen in cardiovascular diseases (CVDs). The decline in plasma melatonin, which is a conserved phylogenetic molecule across all known aerobic creatures, is also a common feature in CVDs. The daily evening pineal melatonin surge synchronizes both the central pacemaker located in the hypothalamic suprachiasmatic nuclei and myriads of cellular clocks in the periphery (“chronobiotic effect”). Melatonin also has cytoprotective properties, acting primarily not only as an antioxidant by buffering free radicals but also by regulating inflammation. In CVDs, exogenous melatonin administration decreases nocturnal hypertension, improves systolic and diastolic blood pressure, reduces the pulsatility index in the internal carotid artery, decreases platelet aggregation, and reduces serum catecholamine levels. Melatonin evokes an increase in parasympathetic activity in the heart. Allometric calculations based on animal research show that melatonin’s cytoprotective benefits in CVDs may require high doses to be fully manifested (in the 100–200 mg/day range). If melatonin is expected to improve health in CVDs, the low doses currently used in clinical trials (i.e., 2–10 mg) are presumably insufficient.","PeriodicalId":501704,"journal":{"name":"npj Biological Timing and Sleep","volume":" ","pages":"1-18"},"PeriodicalIF":0.0,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44323-024-00007-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142160304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Olivia J. P. Fraser, Samantha J. Cargill, Steven H. Spoel, Gerben van Ooijen
{"title":"Crosstalk between salicylic acid signalling and the circadian clock promotes an effective immune response in plants","authors":"Olivia J. P. Fraser, Samantha J. Cargill, Steven H. Spoel, Gerben van Ooijen","doi":"10.1038/s44323-024-00006-0","DOIUrl":"10.1038/s44323-024-00006-0","url":null,"abstract":"The rotation of Earth creates a cycle of day and night, leading to predictable changes in environmental conditions. The circadian clock synchronizes an organism with these environmental changes and alters their physiology in anticipation. Prediction of the probable timing of pathogen infection enables plants to prime their immune system without wasting resources or sacrificing growth. Here, we explore the relationship between the immune hormone salicylic acid (SA), and the circadian clock in Arabidopsis. We found that SA altered circadian rhythmicity through the SA receptor and master transcriptional coactivator, NPR1. Reciprocally, the circadian clock gates SA-induced transcript levels of NPR1-dependent immune genes. Furthermore, the clock gene CCA1 is essential for SA-induced immunity to the major bacterial plant pathogen Pseudomonas syringae. These results build upon existing studies of the relationship between the circadian clock and SA signalling and how interactions between these systems produce an effective immune response. Understanding how and why the immune response in plants is linked to the circadian clock is crucial in working towards improved crop productivity.","PeriodicalId":501704,"journal":{"name":"npj Biological Timing and Sleep","volume":" ","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44323-024-00006-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142117954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bokai Zhu, Silvia Liu, Natalie L. David, William Dion, Nandini K. Doshi, Lauren B. Siegel, Tânia Amorim, Rosemary E. Andrews, G. V. Naveen Kumar, Hanwen Li, Saad Irfan, Tristan Pesaresi, Ankit X. Sharma, Michelle Sun, Pouneh K. Fazeli, Matthew L. Steinhauser
{"title":"Evidence for ~12-h ultradian gene programs in humans","authors":"Bokai Zhu, Silvia Liu, Natalie L. David, William Dion, Nandini K. Doshi, Lauren B. Siegel, Tânia Amorim, Rosemary E. Andrews, G. V. Naveen Kumar, Hanwen Li, Saad Irfan, Tristan Pesaresi, Ankit X. Sharma, Michelle Sun, Pouneh K. Fazeli, Matthew L. Steinhauser","doi":"10.1038/s44323-024-00005-1","DOIUrl":"10.1038/s44323-024-00005-1","url":null,"abstract":"Mice and many marine organisms exhibit ~12-h ultradian rhythms, however, direct evidence of ~12-h ultradian rhythms in humans is lacking. Here, we performed prospective, temporal transcriptome profiling of peripheral white blood cells from three healthy humans. All three participants independently exhibited robust ~12-h transcriptional rhythms in molecular programs involved in RNA and protein metabolism, with strong homology to circatidal gene programs previously identified in Cnidarian marine species.","PeriodicalId":501704,"journal":{"name":"npj Biological Timing and Sleep","volume":" ","pages":"1-10"},"PeriodicalIF":0.0,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44323-024-00005-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141922888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}