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Ethnicity-specific patterns of epigenetic age acceleration in rheumatoid arthritis.
Geroscience
January 2025
Institute of Inflammation and Ageing, University of Birmingham, Birmingham, UK.
Rheumatoid arthritis (RA) is an age-related chronic inflammatory disease which may include accelerated biological ageing processes in its pathogenesis. To determine if increased biological age is associated with risk of RA and/or is present once disease is established. We used DNA methylation to compare biological age (epigenetic age) of immune cells in adults at risk of RA and those with confirmed RA, including twins discordant for RA.
View Article and Find Full Text PDFUrolithin A Modulates PER2 Degradation via SIRT1 and Enhances the Amplitude of Circadian Clocks in Human Senescent Cells.
Nutrients
December 2024
Department of Neurobiology & Behavior, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki 852-8523, Japan.
Background/objectives: Circadian clocks are endogenous systems that regulate numerous biological, physiological, and behavioral events in living organisms. Aging attenuates the precision and robustness of circadian clocks, leading to prolonged and dampened circadian gene oscillation rhythms and amplitudes. This study investigated the effects of food-derived polyphenols such as ellagic acid and its metabolites (urolithin A, B, and C) on the aging clock at the cellular level using senescent human fibroblast cells, TIG-3 cells.
View Article and Find Full Text PDFCircadian- and Light-Driven Rhythmicity of Interconnected Gene Networks in Olive Tree.
Int J Mol Sci
January 2025
Research Centre for Olive, Fruit and Citrus Crops, Council for Agricultural Research and Economics (CREA), Via Settimio Severo 83, 87036 Rende, CS, Italy.
A circadian clock (CC) has evolved in plants that synchronizes their growth and development with daily and seasonal cycles. A properly functioning circadian clock contributes to increasing plant growth, reproduction, and competitiveness. In plants, continuous light treatment has been a successful approach for obtaining novel knowledge about the circadian clock.
View Article and Find Full Text PDFTH301 Emerges as a Novel Anti-Oncogenic Agent for Human Pancreatic Cancer Cells: The Dispensable Roles of p53, CRY2 and BMAL1 in TH301-Induced /p21 Upregulation.
Int J Mol Sci
December 2024
Laboratory of Chronobiology, Institute of Biosciences and Applications (IBA), National Centre for Scientific Research (NCSR) "Demokritos", 153 41 Aghia Paraskevi, Greece.
: Pancreatic Ductal Adeno-Carcinoma (PDAC) is a highly aggressive cancer, with limited treatment options. Disruption of the circadian clock, which regulates key cellular processes, has been implicated in PDAC initiation and progression. Hence, targeting circadian clock components may offer new therapeutic opportunities for the disease.
View Article and Find Full Text PDFChronic Dexamethasone Disturbs the Circadian Rhythm of Melatonin and Clock Genes in Goats.
Animals (Basel)
January 2025
Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing 210095, China.
Article Synopsis
- Dex, a drug used for its immunosuppressive and anti-inflammatory effects, disrupts melatonin secretion and biological clock gene expression in goats.
- After 21 days of Dex treatment, goats showed significantly lower melatonin levels in both plasma and colon, as well as decreased expression of AANAT, a key enzyme for melatonin synthesis.
- The circadian rhythms of several clock genes were disrupted in the Dex group, along with notable changes in CLOCK and BMAL1 protein levels, indicating that chronic Dex exposure affects biological rhythm regulation.
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