Oxidative stress arises from an imbalance between generation and elimination of reactive oxygen species, often leading to cell death. Genomic tools are expanding our understanding of the antioxidant defenses aerobes have evolved and the recently discovered role(s) of reactive oxygen species in signaling.
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http://dx.doi.org/10.1186/gb-2002-3-7-reviews1019 | DOI Listing |
Acta Neurol Belg
January 2025
Department of Pharmaceutical Sciences, Maharshi Dayanand University, Rohtak, 124001, Haryana, India.
Insulin resistance is a condition characterized by the attenuated biological response in the presence of normal or elevated insulin level and therefore is characterized by the impaired sensitivity to insulin and impaired glucose disposal and utilization. Insulin resistance in brain/Brain insulin resistance (BIR) is accompanied by the various manifestations including alteration in glucose sensing by hypothalamic neurons, impaired sympathetic outflow in response to hypoglycemia, increased ROS production, impaired mitochondrial oxygen consumption in the brain, cognitive deficits and neuronal cell damage. It has been reported that the disrupted insulin signaling is accompanied by the reduced expression of insulin receptor (IR)/insulin receptor substrate 1 (IRS1)/PI3K/AKT and IGF-1 receptor (IGF-1R)/IRS2/PI3K pathways.
View Article and Find Full Text PDFCommun Biol
January 2025
Georgia Cancer Center, Augusta University, Augusta, GA, 30912, USA.
The transsulfuration (TSS) pathway is an alternative source of cysteine for glutathione synthesis. Little of the TSS pathway in antioxidant capacity in sickle cell disease (SCD) is known. Here, we evaluate the effects of TSS pathway activation through cystathionine beta-synthase (CBS) to attenuate reactive oxygen species (ROS) and ferroptosis stresses in SCD.
View Article and Find Full Text PDFInflamm Res
January 2025
Department of Urology, The First Affiliated Hospital of Guangxi Medical University, Guangxi Zhuang Autonomous Region, Nanning, Guangxi, China.
Background: Mitochondrial dysfunction and damage can result in the release of mitochondrial DNA (mtDNA) into the cytoplasm, which subsequently activates the cGAS-STING pathway, promoting the onset of inflammatory diseases. Various factors, such as oxidative stress, viral infection, and drug toxicity, have been identified as inducers of mitochondrial damage. This study aims to investigate the role of mtDNA as a critical inflammatory mediator in the pathogenesis of ketamine (KET)-induced cystitis (KC) through the cGAS-STING pathway.
View Article and Find Full Text PDFSci Rep
January 2025
Medical Biochemistry Department, National Research Centre, Giza, 12622, Egypt.
Being the second leading cause of death globally, cancer has been a long-standing and rapidly evolving focus of biomedical research and practice in the world. Recently, there has been growing interest in cyanobacteria. This focus is particularly evident in developing innovative anticancer treatments to reduce reliance on traditional chemotherapy.
View Article and Find Full Text PDFNat Commun
January 2025
Lab of Low-Dimensional Materials Chemistry, Key Laboratory for Ultrafine Materials of Ministry of Education, Frontier Science Center of the Materials Biology and Dynamic Chemistry, Shanghai Engineering Research Center of Hierarchical Nanomaterials, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, China.
Reactive oxygen species (ROS) is promising in cancer therapy by accelerating tumor cell death, whose therapeutic efficacy, however, is greatly limited by the hypoxia in the tumor microenvironment (TME) and the antioxidant defense. Amplification of oxidative stress has been successfully employed for tumor therapy, but the interactions between cancer cells and the other factors of TME usually lead to inadequate tumor treatments. To tackle this issue, we develop a pH/redox dual-responsive nanomedicine based on the remodeling of cancer-associated fibroblasts (CAFs) for multi-pronged amplification of ROS (ZnPP@FQOS).
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