Total-body exposure to ionizing radiation (TBI) results in life-threatening acute radiation syndrome (ARS), which encompasses hematopoietic and gastrointestinal (GI) injuries and results in dose-dependent morbidity and mortality. Management of ARS warrants the deployment of effective medical countermeasure agents (MCM) that protect against and/or mitigate lethal radiation injury. The polyphenolic acetate (PA) 7,8-diacetoxy-4-methylthiocoumarin (DAMTC) has been identified as a potential MCM against ARS by virtue of it mitigating the lethal effects of TBI in C57BL/6 mice. Herein, we describe current evidence, including mechanistic aspects, for the use of PAs as MCMs against ARS and provide perspectives for their further development as approved drugs for the mitigation of ARS.
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http://dx.doi.org/10.1016/j.drudis.2020.02.004 | DOI Listing |
Oncol Res
January 2025
Imaging Department, Tongji Hospital, Tongji University School of Medicine, Shanghai, 200065, China.
Background: Sunitinib resistance is a major challenge in advanced renal cell carcinoma (RCC). Clinically, elucidating the underlying mechanisms and developing practical countermeasures for sunitinib resistance in RCC is desirable. In previous studies, we found that circAGAP1 expression was significantly upregulated in clear cell RCC (ccRCC) and was strongly associated with poor prognosis.
View Article and Find Full Text PDFLangmuir
January 2025
Aiiso Yufeng Li Family Department of Chemical and Nano Engineering, Shu and K. C. Chien and Peter Farrell Collaboratory, University of California San Diego, La Jolla, California 92093, United States.
Poisoning by organophosphate (OP) nerve agents remains a pressing global threat due to their extensive use in chemical warfare agents and pesticides, potentially causing high morbidity and mortality worldwide. This urgent need for effective countermeasures has driven considerable interest in innovative detoxification approaches. Among these, nanoparticle technology stands out for its multifunctional potential and wide-ranging applications.
View Article and Find Full Text PDFViruses
December 2024
ANSES Animal Health Laboratory, PhEED Unit, 14430 Goustranville, France.
Equine infectious anemia virus (EIAV) is the simplest described within the family, related to the human immunodeficiency viruses (HIV-1 and HIV-2). There is an important interplay between host cells and viruses. Viruses need to hijack cellular proteins for their viral cycle completion and some cellular proteins are antiviral agents interfering with viral replication.
View Article and Find Full Text PDFChem Biol Interact
January 2025
Department of Toxicology and Military Pharmacy, Military Faculty of Medicine, University of Defence, Trebesska 1575, 500 01, Hradec Kralove, Czech Republic; Biomedical Research Center, University Hospital Hradec Kralove, Sokolska 581, Hradec Kralove, Czech Republic. Electronic address:
The current pharmacological pretreatment and medical treatment of nerve agent poisoning is an insufficiently addressed medical task. The prophylactic efficacy of a novel compound acting dually as an acetylcholinesterase inhibitor and NMDA receptor antagonist (K1959) and the therapeutic efficacy of a novel NMDA receptor antagonist (K2060) were evaluated in the NMRI mice model of nerve agent poisoning by tabun, soman and sarin. Their added value to the standard antidotal treatment (a combination of oxime reactivator and atropine) was also analyzed.
View Article and Find Full Text PDFRadiat Res
December 2024
Division of Radioprotectants, Department of Pharmacology and Molecular Therapeutics, F. Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, Maryland.
BBT-059 is a long-acting PEGylated interleukin-11 analog that has been shown to have hematopoiesis-promoting and anti-apoptotic attributes, and is being studied as a radiation countermeasure for the hematopoietic acute radiation syndrome (H-ARS). This potential countermeasure has been demonstrated to enhance survival in irradiated mice. To investigate the toxicity and safety profile of this agent, 14 nonhuman primates (NHPs, rhesus macaques) were administered two different doses of BBT-059 subcutaneously 24 h after 4 Gy total-body irradiation and were monitored for the next 60 days postirradiation.
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