Published survival data of V79 cells irradiated by 0.5-5.0 MeV (7-40 keV/microm) protons have been analyzed with a detailed radiobiological model to estimate the per-track yields of lethal lesions. Their correlations with distribution patterns of deposited energy, radical concentrations and with the yields of specific classes of DNA damage have been studied. The observed correlations indicate a potential interpretation of DNA damage lethal for the cell and the initial physical and chemical processes leading to such damage.
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http://dx.doi.org/10.1016/j.apradiso.2008.06.035 | DOI Listing |
Cell Biochem Biophys
January 2025
Department of Maxillofacial Radiology, Field of Oncology, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, 890-8544, Japan.
Synephrine, a protoalkaloid found in Citrus aurantium (CA) peels, exerts lipolytic, anti-inflammatory, and vasoconstrictive effects; however, its antioxidant activity remains unclear. In this study, electron spin resonance spectroscopy revealed that synephrine scavenged both hydroxyl and superoxide anion radicals. Several external stimuli, such as HO, X-rays, and ultraviolet (UV) radiation, cause stress-induced premature senescence (SIPS).
View Article and Find Full Text PDFPurposeThe concept of dual-state hyper-energy metabolism characterized by elevated glycolysis and OxPhos has gained considerable attention during tumor growth and metastasis in different malignancies. However, it is largely unknown how such metabolic phenotypes influence the radiation response in aggressive cancers. Therefore, the present study aimed to investigate the impact of hyper-energy metabolism (increased glycolysis and OxPhos) on the radiation response of a human glioma cell line.
View Article and Find Full Text PDFMicrobiol Spectr
January 2025
Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Hengyang Medical College, Institute of Pathogenic Biology, University of South China, Hengyang, China.
(Mp), a unique pathogen devoid of a cell wall, is naturally impervious to penicillin antibiotics. This bacterium is the causative agent of pneumonia, an acute pulmonary affliction marked by interstitial lung damage. Non-macrolide medications may have potential adverse effects on the developmental trajectory of children, thereby establishing macrolides as the preferred treatment for in pediatric patients.
View Article and Find Full Text PDFBackground: Several studies evaluated peripheral and cerebrospinal fluid (CSF) mtDNA as a putative biomarker in neurodegenerative diseases, often yielding inconsistent findings. We systematically reviewed the current evidence assessing blood and CSF mtDNA levels and variant burden in Parkinson's disease (PD), Alzheimer's disease (AD) and amyotrophic lateral sclerosis (ALS). Multiple sclerosis (MS) was also included as a paradigm of chronic neuroinflammation-driven neurodegeneration.
View Article and Find Full Text PDFFront Microbiol
January 2025
Department of Bioengineering, College of Engineering, Hanyang University, Seoul, Republic of Korea.
The YhaJ transcription factor responds to dinitrophenol (DNT) and its metabolic products. The YhaJ-involving cells have been exploited for whole-cell biosensors of soil-buried landmines. Such biosensors would decrease the damage to personnel who approach landmine fields.
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