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Sex differences in the metabolism of glucose and fatty acids by adipose tissue and skeletal muscle in humans.
Physiol Rev
January 2025
Metabolism, Obesity, and Nutrition Lab, School of Health, Concordia University, Montréal, Québec, Canada.
Adult males and females have markedly different body composition, energy expenditure, and have different degrees of risk for metabolic diseases. A major aspect of metabolic regulation involves the appropriate storage and disposal of glucose and fatty acids. The use of sophisticated calorimetry, tracer, and imaging techniques have provided insight into the complex metabolism of these substrates showing that the regulation of these processes varies tremendously throughout the day, from the overnight fasting condition to meal ingestion, to the effects of physical activity.
View Article and Find Full Text PDFCharacterization of the putative yeast mitochondrial triacylglycerol lipase Tgl2.
J Biol Chem
January 2025
Interfaculty Institute of Biochemistry, University of Tübingen, Tübingen, Germany. Electronic address:
Mitochondria derive the majority of their lipids from other organelles through contact sites. These lipids, primarily phosphoglycerolipids, are the main components of mitochondrial membranes. In the cell, neutral lipids like triacylglycerides (TAGs) are stored in lipid droplets, playing an important role in maintaining cellular health.
View Article and Find Full Text PDFKetogenesis nutritionally supports brain during bacterial infection in Drosophila.
Brain Behav Immun
January 2025
University of South Bohemia, Faculty of Science, Department of Molecular Biology and Genetics, Ceske Budejovice, Czech Republic. Electronic address:
Mounting an immune response is a nutritionally demanding process that requires the systemic redistribution of energy stores towards the immune system. This is facilitated by cytokine-induced insulin resistance, which simultaneously promotes the mobilization of lipids and carbohydrates while limiting their consumption in immune-unrelated processes, such as development, growth, and reproduction. However, this adaptation also restricts the availability of nutrients to vital organs, which must then be sustained by alternative fuels.
View Article and Find Full Text PDFSilica-Activated Redox Signaling Confers Rice with Enhanced Drought Resilience and Grain Yield.
ACS Nano
January 2025
State Key Laboratory of Pollution Control and Resource Reuse, School of Environment, Nanjing University, Nanjing 210023, China.
Under a changing climate, enhancing the drought resilience of crops is critical to maintaining agricultural production and reducing food insecurity. Here, we demonstrate that seed priming with amorphous silica (SiO) nanoparticles (NPs) (20 mg/L) accelerated seed germination speed, increased seedlings vigor, and promoted seedling growth of rice under polyethylene glycol (PEG)-mimicking drought conditions. An orthogonal approach was used to uncover the mechanisms of accelerated seed germination and enhanced drought tolerance, including electron paramagnetic resonance, Fourier transform infrared spectroscopy (FTIR), metabolomics, and transcriptomics.
View Article and Find Full Text PDFVitamin A deficiency and male-specific effects on heart function in mice.
Biochem Biophys Res Commun
January 2025
Center for Molecular Medicine, Maine Health Institute for Research, 81 Research Drive, Scarborough, ME, USA.
Hepatic stores of Vitamin A (retinol) are mobilized and metabolized in the heart following myocardial infarction. The physiological consequences of this mobilization are poorly understood. Here we used dietary depletion in a lecithin retinol acyltransferase mutant mouse line to induce Vitamin A deficiency and investigate the effects on cardiac function and recovery from myocardial infarction.
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