Article
Oncology
Xuekai Xiong, Hongbo Gao, Yayu Lin, Vijay Yechoor, Ke Ma
Summary: The deficiency of Rev-erb alpha in mdx mice promotes regenerative myogenic response, ameliorates muscle damage, and enhances the regenerative capacity of dystrophic muscle.
EXPERIMENTAL CELL RESEARCH
(2021)
Article
Cardiac & Cardiovascular Systems
Jianfeng Shi, Renyang Tong, Meng Zhou, Yu Gao, Yichao Zhao, Yifan Chen, Wenhua Liu, Gaoxiang Li, Dong Lu, Guofeng Meng, Liuhua Hu, Ancai Yuan, Xiyuan Lu, Jun Pu
Summary: The study revealed that the circadian protein Rev-erb alpha is functionally expressed in platelets and enhances platelet activation and thrombus formation. This suggests that Rev-erb alpha could be a promising therapeutic target for managing thrombosis-related cardiovascular diseases.
EUROPEAN HEART JOURNAL
(2022)
Article
Pharmacology & Pharmacy
Mingyue Sheng, Xun Chen, Yan Yu, Qi Wu, Junping Kou, Gangling Chen
Summary: This study demonstrates that SR9009 can activate the Rev-erb alpha gene and provides protection against ischemic stroke damage, partly through the Nrf2 pathway.
FRONTIERS IN PHARMACOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Akihiko Sakamoto, Yusuke Terui, Takeshi Uemura, Kazuei Igarashi, Keiko Kashiwagi
Summary: Polyamines stimulate the synthesis of specific proteins at the level of translation, impacting the circadian rhythm. When polyamines are reduced, the circadian period lengthens and the synthesis of BMAL1 and REV-ERB alpha is significantly reduced. By enhancing ribosomal shunting, polyamines promote the synthesis of these proteins within the circadian clock.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Cell Biology
Matthew R. Brown, Damien Laouteouet, Morgane Delobel, Orianne Villard, Christophe Broca, Gyslaine Bertrand, Anne Wojtusciszyn, Stephane Dalle, Magalie A. Ravier, Aleksey Matveyenko, Safia Costes
Summary: This study reveals a previously unexplored causative relationship between REV-ERB alpha expression, inhibition of autophagy, and beta-cell failure in type 2 diabetes mellitus.
CELL DEATH & DISEASE
(2022)
Article
Cell Biology
Maayan Dadon-Freiberg, Nava Chapnik, Oren Froy
Summary: This study demonstrates that leucine inhibits liver mTORC1 pathway leading to dampened circadian rhythms, while REV-ERB alpha activates the mTORC1 pathway, resulting in phosphorylation of the clock protein BMAL1.
MOLECULAR AND CELLULAR ENDOCRINOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Yasmine Al-Sabagh, Hayley Thorpe, Bryan Jenkins, Shahnaza Hamidullah, Malik Talhat, Cara Suggett, Cristine Reitz, Mina Rasouli, Tami Martino, Jibran Khokhar
Summary: Alcohol misuse contributes to approximately 3 million premature deaths annually. Disruption of circadian rhythms is a risk factor for alcohol misuse, but this relationship is poorly understood. This study suggests that genetic variation in REV-ERB alpha may be involved in differences in alcohol drinking.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Biochemistry & Molecular Biology
Feng Li, Luomin Lin, Yiting He, Guanghui Sun, Dong Dong, Baojian Wu
Summary: The study found that the central clock gene Bmal1 plays a role in acne-associated inflammation. Bmal1 disruption or jet lag led to exacerbated P. acnes-induced skin inflammation, while Bmal1 restricted P. acnes-induced inflammation by regulating the NF-kappa B/NLRP3 axis. These findings enhance our understanding of the pathogenesis of acne and suggest that targeting circadian rhythms may be an effective approach for managing acne.
INTERNATIONAL JOURNAL OF BIOLOGICAL SCIENCES
(2022)
Article
Endocrinology & Metabolism
Yinhua Ni, Yufeng Zhao, Lingyan Ma, Zhe Wang, Liyang Ni, Luting Hu, Zhengwei Fu
Summary: The study found that Rev-erb alpha decreased in the intestines of mice with high cholesterol, high fat diet-induced NASH, and by activating autophagy and reducing apoptotic signaling of epithelial cells, it protected against increased intestinal permeability. This led to improvements in hepatic lipid accumulation, insulin resistance, inflammation, and fibrosis in mice with NASH.
METABOLISM-CLINICAL AND EXPERIMENTAL
(2021)
Article
Medicine, Research & Experimental
Zhihong Yang, Rana V. Smalling, Yi Huang, Yanchao Jiang, Praveen Kusumanchi, Will Bogaert, Li Wang, Don A. Delker, Nicholas J. Skill, Sen Han, Ting Zhang, Jing Ma, Nazmul Huda, Suthat Liangpunsakul
Summary: This study identified a role for the SHP/REV-ERB alpha/CYP4A axis in the pathogenesis of ALD, highlighting REV-ERB alpha or CYP4A as potential therapeutic targets for ALD.
Article
Medicine, Research & Experimental
Qixin Wang, Isaac K. Sundar, Joseph H. Lucas, Thivanka Muthumalage, Irfan Rahman
Summary: This study investigated the role of REV-ERBα in circadian dysfunction and EMT alteration induced by cigarette smoke. The results showed that REV-ERBα agonist could alleviate CS-induced inflammation and abnormal EMT in the lungs, suggesting activation of REV-ERBα as a potential novel therapeutic approach for smoking-induced chronic inflammatory lung diseases.
Article
Medicine, General & Internal
Ruyue Shao, Yongqiang Yang, Kerui Fan, Xicheng Wu, Rong Jiang, Li Tang, Longjiang Li, Yi Shen, Gang Liu, Li Zhang
Summary: The study demonstrates the potential significance of REV-ERB alpha in Fas-induced acute liver injury, with the use of GSK4112 showing promise in alleviating liver damage and improving survival rates in mice.
INTERNATIONAL JOURNAL OF MEDICAL SCIENCES
(2021)
Article
Multidisciplinary Sciences
Amandine Verlande, Sung Kook Chun, Maggie O. Goodson, Bridget M. Fortin, Hosung Bae, Cholsoon Jang, Selma Masri
Summary: The study revealed that lung adenocarcinoma patients may experience cachexia due to inflammatory responses, and the activation of PKA by elevated glucagon levels destabilizes REV-ERB alpha, leading to increased hepatic glucose production.
Article
Endocrinology & Metabolism
Stefano Rizza, Alessio Luzi, Maria Mavilio, Marta Ballanti, Arianna Massimi, Ottavia Porzio, Andrea Magrini, Juliane Hannemann, Rossella Menghini, Michael Lehrke, Bart Staels, Peter J. Grant, Rainer H. Boger, Nikolaus Marx, Massimo Federici
Summary: The study found subclinical abnormalities in premature gluco-metabolic defects and changes in peripheral clock gene expression among night shift workers. The Pittsburgh Sleep Quality Index and working status were identified as independent determinants of higher HbA1c levels.
ACTA DIABETOLOGICA
(2021)
Article
Immunology
Ruizhuo Chen, Brandy N. Routh, Jillian E. Straetker, Cecily R. Gibson, Aidan S. Weitzner, Kiersten S. Bell, Andrew D. Gaudet, Laura K. Fonken
Summary: The circadian system regulates various physiological processes, and disruption of the circadian clock gene Rev-erb alpha can lead to behavioral changes and neuroinflammation. This study demonstrates that microglia depletion can ameliorate behavioral abnormalities in RKO mice and that male and female RKO mice show different alterations in the neuroimmune system.
BRAIN BEHAVIOR AND IMMUNITY
(2023)
Article
Biochemistry & Molecular Biology
Marianne Ibrahim, Thierry Wasselin, Etienne Challet, Alain Van Dorsselaer, Yvon Le Maho, Thierry Raclot, Fabrice Bertile
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2020)
Review
Behavioral Sciences
Pawan Kumar Jha, Hanan Bouaouda, Andries Kalsbeek, Etienne Challet
Summary: The master clock in the SCN uses environmental light to synchronize circadian rhythms, while behavioral arousal disrupts the circadian system and alters molecular functions of pacemaker cells, affecting nocturnal and diurnal animals differently. Further research is needed to understand circadian impairments associated with shift work and trans-meridian travel in both nocturnal and diurnal animal models.
NEUROSCIENCE AND BIOBEHAVIORAL REVIEWS
(2021)
Article
Neurosciences
Ibtissam Chakir, Benjamin B. Tournier, Hanane Touati, Vincent-Joseph Poirel, Etienne Challet, Paul Pevet, Ali Ouarour, Patrick Vuillez
Summary: The duration of photoperiod controls reproduction in seasonal mammals, affecting the sexual activity and gonadal atrophy of Syrian hamsters. Changes in Clock gene expression are influenced by photoperiodic conditions and hormonal levels, with melatonin and testosterone playing a role in regulating Clock expression. Daily variations in Clock levels in the suprachiasmatic nuclei are independent of melatonin and testosterone during the photorefractory period, but both hormones provide positive feedback on average levels of Clock expression.
EUROPEAN JOURNAL OF NEUROSCIENCE
(2021)
Article
Neurosciences
Fabrics Bertile, Marine Plumel, Pauline Maes, Aurelie Hirschler, Etienne Challet
Summary: The study identified day-night variations in the cerebellar proteome of mice fed during daytime or nighttime, showing changes in proteins related to heat-shock proteins, enzymes, and neuronal activity in daytime food-restricted mice. Additionally, a significant feeding x time-of-day interaction was found for changes in the intensity of 20 spots.
FRONTIERS IN MOLECULAR NEUROSCIENCE
(2021)
Article
Neurosciences
Geraldine Maier, Julien Delezie, Pal O. Westermark, Gesa Santos, Danilo Ritz, Christoph Handschin
Summary: The study found that exercising in the early daytime can trigger energy provisioning and tissue regeneration, while early nighttime exercise activates stress-related and catabolic pathways. Scheduled training has limited effects on the muscle and liver circadian clocks, but exercising at different times of day results in vastly different activation of signaling pathways.
JOURNAL OF PHYSIOLOGY-LONDON
(2022)
Article
Biology
Hicham Farsi, Driss Harti, Mohamed Rachid Achaaban, Mohammed Piro, Mohammed Ouassat, Etienne Challet, Paul Pevet, Khalid El Allali
Summary: The dromedary camel exhibits a clear 24-hour locomotor activity rhythm throughout the four seasons, with intense activity during daytime and little or no activity during nighttime. Daytime total activity is significantly higher in summer compared to winter, and the active phase coincides with photophase and thermophase. The diurnal pattern remains consistent across seasons, with onset and offset of activity synchronized with sunrise and sunset. Abnormal nocturnal activity is observed during periods of rain, suggesting that the camel's activity is primarily driven by changes in light intensity at dawn and dusk.
CHRONOBIOLOGY INTERNATIONAL
(2022)
Article
Behavioral Sciences
Marine Parker, Etienne Challet, Bertrand Deputte, Brunilde Ract-Madoux, Marie Faustin, Jessica Serra
Summary: The study reveals that natural seasonal daylight fluctuations modulate the locomotor and feeding rhythms of indoor cats, while the eating pattern is less affected by seasonal variations.
JOURNAL OF VETERINARY BEHAVIOR-CLINICAL APPLICATIONS AND RESEARCH
(2022)
Article
Biochemistry & Molecular Biology
Rosanna Caputo, Vincent-Joseph Poirel, Etienne Challet, Johanna H. Meijer, Sylvie Raison
Summary: This study investigates the functioning of the serotonin system in diurnal rodents. The results show that the synthesis of serotonin in these animals is rhythmic and correlates with their behavioral phenotype.
Article
Clinical Neurology
Khalid El Allali, Younes Beniaich, Hicham Farsi, Mohammed El Mehdi M'hani, Mohamed Sobhi Jabal, Mohammed Piro, Mohamed Rachid Achaaban, Mohammed Ouassat, Etienne Challet, Mireille Besson, Jamal Mounach, Paul Pevet, Amal Satte
Summary: This study investigates sleep patterns in camels by combining behavioral and polysomnography (PSG) methods. The results show that camels have a polyphasic sleep pattern at night, with REM sleep primarily occurring in the head lying-down posture.
Article
Biology
Hanane Touati, Saliha Ouali-Hassenaoui, Aicha Dekar-Madoui, Nadir Benhafri, Lydia Boumansour, Etienne Challet, Paul Pevet, Patrick Vuillez
Summary: This study investigates the effect of high energy feeding on the clock functioning in the supraoptic nuclei (SON) of Psammomys obesus. The results show that high energy feeding leads to impairment of daily AVP and CLOCK cycling in the SON, indicating an alteration in the SON clockwork.
BIOLOGICAL RHYTHM RESEARCH
(2023)
Article
Agriculture, Dairy & Animal Science
Marine Parker, Jessica Serra, Bertrand L. Deputte, Brunilde Ract-Madoux, Marie Faustin, Etienne Challet
Summary: Domestic cats living in different housing conditions exhibit differences in daily activity and feeding patterns, with outdoor cats being more active and consuming more food, while indoor cats are more affected by human interactions.
Article
Neurosciences
Rosanna Caputo, Vincent-Joseph Poirel, Isabel Paiva, Anne-Laurence Boutillier, Etienne Challet, Johanna H. Meijer, Sylvie Raison
Summary: In this study, the researchers investigated the effect of circadian rhythm on NA synthesis in nocturnal rat and diurnal rodent Arvicanthis. The results showed that the tyrosine hydroxylase gene th displayed a 24-hour rhythmic expression in both species. Furthermore, the expression of clock genes showed a phase opposition between the rat and Arvicanthis. These findings suggest that the circadian rhythm of NA may be related to the rhythmic expression of the th gene and differs between nocturnal and diurnal rodents.
NEUROSCIENCE LETTERS
(2023)
Article
Multidisciplinary Sciences
Anne-Sophie Delbes, Mar Quinones, Cedric Gobet, Julien Castel, Raphael G. P. Denis, Jeremy Berthelet, Benjamin D. Weger, Etienne Challet, Aline Charpagne, Sylviane Metairon, Julie Piccand, Marine Kraus, Bettina H. Rohde, John Bial, Elizabeth M. Wilson, Lise-Lotte Vedin, Mirko E. Minniti, Matteo Pedrelli, Paolo Parini, Frederic Gachon, Serge Luquet
Summary: Peripheral organ circadian clocks, such as the liver clock, can affect the central pacemaker and the overall circadian physiology, offering potential insights into disorders related to altered circadian rhythms.
Review
Biology
Emma Grosjean, Valerie Simonneaux, Etienne Challet
Summary: Our daily life follows 24-hour cycles in various biological functions, such as sleep-wake and feeding/fasting cycles. These rhythms are regulated by endogenous clocks that are synchronized by environmental cues. Circadian disruption, such as exposure to bright light at night or nocturnal meals, can have detrimental effects on energy balance in humans, leading to increased metabolic risks. Chrononutritional strategies, considering factors such as regularity of daily meals and eating periods, can help improve daily rhythmicity and maintain appropriate energy balance.
Article
Multidisciplinary Sciences
Hicham Farsi, Mohamed R. Achaaban, Mohammed Piro, Beatrice Bothorel, Mohammed Ouassat, Etienne Challet, Paul Pevet, Khalid El Allali
SCIENTIFIC REPORTS
(2020)