The adverse effects of aging of other organs (ovaries at menopause) on the skeleton are well known, but ironically little is known of skeletal aging itself. Evidence indicates that age-related changes, such as oxidative stress, are fundamental mechanisms of the decline of bone mass and strength. Unlike the short-lived osteoclasts and osteoblasts, osteocytes--former osteoblasts entombed in the mineralized matrix--live as long as 50 years, and their death is dependent on skeletal age. Osteocyte death is a major contributor to the decline of bone strength with age, and the likely mechanisms are oxidative stress, autophagy failure and nuclear pore "leakiness". Unraveling these mechanisms should improve understanding of the age-related increase in fractures and suggest novel targets for its prevention.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2880220 | PMC |
| http://dx.doi.org/10.1016/j.tem.2010.01.010 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Stem Cell Therapy Modulates Molecular Cues of Vasogenic Edema Following Ischemic Stroke: Role of Sirtuin-1 in Regulating Aquaporin-4 Expression.
Stem Cell Rev Rep
January 2025
Department of Pharmacology and Toxicology, National Institute of Pharmaceutical Education and Research (NIPER), Ahmedabad, Gandhinagar, Gujarat, India.
Background: Conventional post-stroke edema management strategies are limitedly successful as in multiple cases of hemorrhagic transformation is being reported. Clinically, acute-ischemic-stroke (AIS) intervention by endovascular mesenchymal stem cells (MSCs) have shown benefits by altering various signaling pathways. Our previous studies have reported that intra-arterial administration of 1*10 MSCs (IA-MSCs) were beneficial in alleviating post-stroke edema by modulating PKCδ/MMP9/AQP4 axis and helpful in preserving the integrity of blood-brain-barrier (BBB).
View Article and Find Full Text PDFIn silico analysis of non-conventional gene targets for genetic interventions to enhance fatty acid production: a review.
Mol Biol Rep
January 2025
Department of Biological Sciences, Sunandan Divatia School of Science, NMIMS Deemed to be University, Vile Parle (West), Mumbai, 400056, India.
Since the 1990s, fatty acids (FA) have drawn significant industrial attention due to their diverse applications creating a demand for biological systems capable of producing high FA titers. While various strategies have been explored to achieve this, many of the conventional approaches rely on extensive genetic manipulations, which often result in strain instability, thus limiting its potential to yield better FA titers. Moreover, stresses such as pH, osmotic, and oxidative imbalances generated during FA production aggravate these challenges, further limiting FA titers.
View Article and Find Full Text PDFPhotoperiod and Light Spectrum Modulate Daily Rhythms and Expression of Genes Involved in Cell Proliferation, DNA Repair, Apoptosis and Oxidative Stress in a Seabream Embryonic Stem Cell Line.
Mar Biotechnol (NY)
January 2025
Departamento de Biología, Facultad de Ciencias del Mar y Ambientales, Universidad de Cádiz, 11510, Puerto Real (Cádiz), Spain.
The use of cell lines as alternative models for environmental physiology studies opens a new window of possibilities and is becoming an increasingly used tool in marine research to fulfil the 3R's rule. In this study, an embryonic monoclonal stem cell line obtained from a marine teleost (gilthead seabream, Sparus aurata) was employed to assess the effects of photoperiod (light/dark cycles vs constant dark) and light spectrum (white, blue, green, blue/green and red lights) on gene expression and rhythms of cellular markers of proliferation, DNA repair, apoptosis and cellular/oxidative stress by RT-qPCR and cosinor analyses. The results obtained revealed the optimal performance of cells under blue light (LDB), with all the genes analysed showing their highest RNA expression levels and most robust daily variations/rhythms in this condition.
View Article and Find Full Text PDFFrom smog to scarred hearts: unmasking the detrimental impact of air pollution on myocardial ischemia-reperfusion injury.
Cell Mol Life Sci
January 2025
Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand.
Air pollution is a global environmental health hazard associated with elevated cardiovascular morbidity and mortality. Emerging evidence suggests that exposure to various air pollutants, specifically particulate matter (PM), ultrafine particulate matter (UFPM), and diesel exhaust particles, may exacerbate myocardial ischemia-reperfusion (I/R) injury. PM exposure can directly impair cardiomyocyte survival under ischemic conditions by inducing inflammation, oxidative stress, apoptosis, and dysregulation of non-coding RNAs.
View Article and Find Full Text PDFPomegranate as a natural remedy for gastric ulcers prevention: a review of its gastroprotective mechanisms and pharmacological benefits.
Naunyn Schmiedebergs Arch Pharmacol
January 2025
School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, 1988873554, Iran.
Gastric ulcers (GUs) represent a common gastrointestinal disorder characterized by mucosal damage and inflammation, often precipitated by factors such as Helicobacter pylori infection and the consumption of COX inhibitors. This comprehensive review investigates the role of oxidative stress and inflammation in the pathogenesis of GUs and assesses the potential therapeutic effects of Punica granatum (pomegranate, Pg) supplementation. Utilizing a series of experimental models, including indomethacin, aspirin, and alcohol-induced ulcers, we demonstrate that Pg extracts possess significant gastroprotective properties.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!