npj Biological Timing and Sleep最新文献_第2页

Insect circadian plasticity as a proposed target for the expression of parasite extended phenotypes. 昆虫昼夜节律可塑性作为寄生虫扩展表型表达的拟议目标。

npj Biological Timing and Sleep Pub Date : 2025-01-01 Epub Date: 2025-08-01 DOI: 10.1038/s44323-025-00046-0

Joana Dopp, Charissa de Bekker

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Social jetlag alters markers of exercise-induced mitochondrial adaptations in the heart. 社交时差改变了心脏中运动诱导的线粒体适应的标记。

npj Biological Timing and Sleep Pub Date : 2025-01-01 Epub Date: 2025-01-25 DOI: 10.1038/s44323-024-00019-9

Michael B Dial, Elias M Malek, Austin R Cooper, Greco A Neblina, Nikoleta I Vasileva, Graham R McGinnis

{"title":"Social jetlag alters markers of exercise-induced mitochondrial adaptations in the heart.","authors":"Michael B Dial, Elias M Malek, Austin R Cooper, Greco A Neblina, Nikoleta I Vasileva, Graham R McGinnis","doi":"10.1038/s44323-024-00019-9","DOIUrl":"https://doi.org/10.1038/s44323-024-00019-9","url":null,"abstract":"<p><p>Social jetlag (SJL) represents the behavioral misalignment of sleep and wake times on work days and free days, and potently disrupts the circadian rhythm. SJL affects up to 70% of the population worldwide and is associated with increased risk for many cardiometabolic diseases. Animal models of acute SJL have shown disruption in locomotor activity and expression of clock genes in select tissues, its impact on the heart remains unclear. The purpose of this study was to investigate the effects of prolonged SJL (6 weeks), on activity rhythms, and the impact on exercise-induced adaptations in the heart. Male mice (n = 40, C57BL6) were assigned to a control light:dark (LD) cycle or SJL schedule (4-hour shift on weekends) for 6 weeks. Mice in each condition were further divided into voluntary exercise (EX) or sedentary (SED) groups. SJL resulted in significant shifts in the onset of physical activity in both sedentary (SJL-SED) and exercised (SJL-EX) mice on weekends, and exercise accelerated the speed of re-entrainment to the weekday schedule. Exercise induced myocardial hypertrophy in both CON-EX and SJL-EX groups. While there were no changes in mitochondrial content, SJL decreased expression of mitochondrial fusion proteins MFN1 and OPA1, and inhibited exercise-induced increases in MFN2. Taken together, these findings suggest that exercise hastens re-entrainment to the weekday schedule under SJL, but that SJL disrupts exercise-induced alterations to mitochondrial fusion/fission dynamics in the heart. Further investigation of cardiovascular function is warranted and will enable the development of strategies to prevent the effects of SJL on the heart.</p>","PeriodicalId":501704,"journal":{"name":"npj Biological Timing and Sleep","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12363985/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144985209","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}

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Reassessing the involvement of the CREB pathway in the circadian clock of Drosophila melanogaster 重新评估CREB通路在黑腹果蝇生物钟中的作用

npj Biological Timing and Sleep Pub Date : 2024-12-04 DOI: 10.1038/s44323-024-00015-z

Anna Katharina Eick, Maite Ogueta, Ralf Stanewsky

{"title":"Reassessing the involvement of the CREB pathway in the circadian clock of Drosophila melanogaster","authors":"Anna Katharina Eick, Maite Ogueta, Ralf Stanewsky","doi":"10.1038/s44323-024-00015-z","DOIUrl":"10.1038/s44323-024-00015-z","url":null,"abstract":"Circadian clocks are ubiquitous in almost all organisms on Earth and many key genes are highly conserved among species. In the mammalian suprachiasmatic nucleus, the cAMP response element binding protein (CREB) pathway is known to play a crucial role in conveying light-input to the transcription of clock genes. The fruit fly Drosophila melanogaster also expresses two Creb proteins, CrebA and CrebB, which have been associated with the circadian clock. For example, Drosophila Creb has been suggested to constitute a molecular link between neuronal excitability and clock gene transcription. In this study we subjected flies with clock cell specific CrebA or CrebB mutations to circadian behavioral and bioluminescence assays. Surprisingly, we found that neither loss of CrebA or CrebB did affect free-running locomotor behavior, rhythmic period oscillations in clock neurons, or light-dependent synchronization. In conclusion our findings question the conserved circadian role of the Creb pathway in Drosophila and encourage further studies to elucidate its potential function within insect circadian clocks.","PeriodicalId":501704,"journal":{"name":"npj Biological Timing and Sleep","volume":" ","pages":"1-11"},"PeriodicalIF":0.0,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s44323-024-00015-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142762903","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}

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Light exposure differs by sex in the US, with females receiving less bright light 在美国，不同性别的人接受的光照不同，女性接受的光照较少

npj Biological Timing and Sleep Pub Date : 2024-12-04 DOI: 10.1038/s44323-024-00016-y

Danielle A. Wallace

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Sleep and diurnal alternative polyadenylation sites associated with human APA-linked brain disorders 与人类 APA 相关脑部疾病有关的睡眠和昼夜替代多聚腺苷酸位点

npj Biological Timing and Sleep Pub Date : 2024-11-01 DOI: 10.1038/s44323-024-00012-2

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}

引用次数: 0

Melatonin’s role in the timing of sleep onset is conserved in nocturnal mice 褪黑激素在夜行性小鼠睡眠开始时间中的作用是一致的

npj Biological Timing and Sleep Pub Date : 2024-11-01 DOI: 10.1038/s44323-024-00013-1

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}

引用次数: 0

How stepping out helped us tune in: finding space and time to think as an early career researcher 走出如何帮助我们调整：作为一名早期职业研究人员，寻找思考的空间和时间

npj Biological Timing and Sleep Pub Date : 2024-10-01 DOI: 10.1038/s44323-024-00010-4

Manuel Spitschan, Laura Kervezee, Renske Lok, Elise McGlashan, Raymond P. Najjar

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AAV8-P301L tau expression confers age-related disruptions in sleep quantity and timing AAV8-P301L tau表达会导致与年龄有关的睡眠数量和时间紊乱

npj Biological Timing and Sleep Pub Date : 2024-10-01 DOI: 10.1038/s44323-024-00009-x

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}

引用次数: 0

Prior-night sleep predicts next-day symptoms over ten days among military personnel with sleep problems 前一晚的睡眠可预测有睡眠问题的军人在十天内第二天出现的症状

npj Biological Timing and Sleep Pub Date : 2024-10-01 DOI: 10.1038/s44323-024-00008-y

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

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Chronobiotic and cytoprotective activity of melatonin in the cardiovascular system. Doses matter 褪黑素在心血管系统中的慢性生物和细胞保护活性。剂量问题

npj Biological Timing and Sleep Pub Date : 2024-09-09 DOI: 10.1038/s44323-024-00007-z

Daniel P. Cardinali, Daniel E. Vigo

{"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}

引用次数: 0