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The eye is an immune-protected organ, which is driven by factors such as cytokines, chemicals, light, and mechanical stimuli. The circadian clock is an intrinsic timing mechanism that influences the immune activities, such as immune cell count and activity, as well as inflammatory responses. Recent studies have demonstrated that the eye also possesses an intrinsic circadian rhythm, and this rhythmic regulation participates in ocular immune modulation. In this review, we discuss the immunoregulatory mechanisms of the circadian clock within the eye, and reveal new perspectives for the prevention and treatment of ocular diseases.
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http://dx.doi.org/10.1080/07420528.2025.2460675 | DOI Listing |
Cell Metab
March 2025
Department of Cardiovascular Medicine, Center for Circadian Metabolism and Cardiovascular Disease, Southwest Hospital, Army Medical University, Chongqing 400038, China; Ministry of Education Key Laboratory of Geriatric Cardiovascular and Cerebrovascular Disease, Chongqing 400038, China. Electronic address:
Feeding rhythms regulate exercise performance and muscle energy metabolism. However, the mechanisms regulating adipocyte functions remain unclear. Here, using multi-omics analyses, involving (phospho-)proteomics and lipidomics, we found that day-restricted feeding (DRF) regulates diurnal rhythms of the mitochondrial proteome, neutral lipidome, and nutrient-sensing pathways in mouse gonadal white adipose tissue (GWAT).
View Article and Find Full Text PDFComp Biochem Physiol C Toxicol Pharmacol
March 2025
College of Public Health, Gansu University of Chinese Medicine, Lanzhou 730000, China; Key Laboratory of Dunhuang Medicine, Ministry of Education, Lanzhou 730000, China. Electronic address:
The atmospheric oxygen concentration is significantly reduced in highland regions compared to lowland areas. The first entering the plateau can induce sleep disorders in individuals, primarily attributed to insufficient oxygen supply. This study used Drosophila melanogaster as a model organism to better understand the molecular mechanism of acute hypoxia-induced sleep disorders.
View Article and Find Full Text PDFFront Cell Neurosci
February 2025
Faculty of Medicine, Institute of Anatomy II, Heinrich Heine University, Düsseldorf, Germany.
Introduction: Glutamate represents the dominant neurotransmitter that conveys the light information to the brain, including the suprachiasmatic nucleus (SCN), the central pacemaker for the circadian system. The neuronal and astrocytic glutamate transporters are crucial for maintaining efficient glutamatergic signaling. In the SCN, glutamatergic nerve terminals from the retina terminate on vasoactive intestinal polypeptide (VIP) neurons, which are essential for circadian functions.
View Article and Find Full Text PDFEur J Neurosci
March 2025
Department of Neurosciences, Case Western Reserve University School of Medicine, Cleveland, Ohio, USA.
Circadian rhythms influence various physiological and behavioral processes such as sleep-wake cycles, hormone secretion, and metabolism. In Drosophila, an important set of circadian output neurons is called pars intercerebralis (PI) neurons, which receive input from specific clock neurons called DN1. These DN1 neurons can further be subdivided into functionally and anatomically distinctive anterior (DN1a) and posterior (DN1p) clusters.
View Article and Find Full Text PDFBackground: The biological reproductive process requires the precise coordination of annual and daily signals to adapt to environmental shifts. Humans and animals have developed shared neuroendocrine systems that have adapted to process daily and seasonal light signals within the hypothalamic-pituitary -gonadal axis. However, the stability of circadian and seasonal biological processes is at risk due to industrialization and contemporary round-the-clock lifestyles.
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