Giulivi Cecilia, Kotz Richard
Department of Molecular Biosciences, School of Veterinary Medicine, University of California, Davis, CA, 95616, USA.
University of California Medical Investigations of Neurodevelopmental Disorders (M.I.N.D.) Institute, Sacramento, CA, USA.
FEBS Open Bio. 2025 Sep;15(9):1459-1470. doi: 10.1002/2211-5463.70062. Epub 2025 Jun 13.
Mitochondria are central to cellular energy production and the regulation of oxidative stress. Traditional methods for assessing mitochondrial ATP and reactive oxygen species (ROS) rely on metal probes, which unintentionally ground the system, confounding results. To investigate the impact of grounding on mitochondrial function, we utilized fluorescence-based experiments to assess these mitochondrial outcomes under three conditions: wired (grounded), sham, and naïve. Mitochondria under grounded conditions produced significantly more ATP (by 5-11%), reduced ROS production (by 22-33%), and decreased mitochondrial membrane potential (by 5-6%) than sham and naïve. These findings indicate that grounding improves mitochondrial bioenergetics by reducing oxidative stress. Future research should explore the broader implications of grounding over time on mitochondrial health and its potential therapeutic applications.
线粒体对于细胞能量产生和氧化应激调节至关重要。传统评估线粒体ATP和活性氧(ROS)的方法依赖金属探针,这会意外地使系统接地,从而混淆结果。为了研究接地对线粒体功能的影响,我们利用基于荧光的实验在三种条件下评估这些线粒体结果:有线(接地)、假手术和未处理。与假手术和未处理组相比,接地条件下的线粒体产生的ATP显著更多(增加5 - 11%),ROS产生减少(减少22 - 33%),线粒体膜电位降低(降低5 - 6%)。这些发现表明,接地通过减少氧化应激来改善线粒体生物能量学。未来的研究应探索随着时间推移接地对线粒体健康的更广泛影响及其潜在的治疗应用。