Computed tomography-based pulmonary vasculature analysis of decreased lung perfusion after thoracic radiotherapy in patients with lung cancer
This study aimed to quantitatively assess changes in lung perfusion after thoracic radiotherapy in lung cancer patients.
Isolation and characterization of gamma rays induced mutants for improved agro-morphological performance and harder grain texture in wheat ( L.)
Kernel texture plays a principal role in determining technological flour properties and end-use quality of wheat products. Hence, a multi-year mutation induction programme was conducted to isolate advanced wheat mutant lines with agro-morphologically superior performance, higher disease resistance and harder grain texture.
IEPA, a novel radiation countermeasure, alleviates acute radiation syndrome in rodents
Repurposing therapeutic agents with existing clinical data is a common strategy for developing radiation countermeasures. IEPA (imidazolyl ethanamide pentandioic acid) is an orally bioavailable small molecule pseudopeptide with myeloprotective properties, a good clinical safety profile, and stable chemical characteristics facilitating stockpiling. Here, we evaluated IEPA's radiomitigative efficacy in the hematopoietic subsyndrome of acute radiation syndrome (H-ARS) using total-body irradiation (TBI) models in C57BL/6J mice and WAG/RijCmcr rats, applying various posology schemes and introducing syringe feeding of the IEPA formulation in the pudding. Additionally, we assessed IEPA in the delayed effects of acute radiation exposure (DEARE) model after partial-body irradiation (PBI) in WAG/RijCmcr rats. Endpoints included survival, body weight, hematology, and pulmonary parameters, depending on the model. Results from mouse and rat TBI models demonstrated survival improvements with repeated IEPA dosing at 10 mg/kg, with the largest benefits observed in the bi-daily (BID) treatment over the 30-day ARS phase in female rats. Survival across PBI-DEARE subsyndromes was comparable between IEPA and vehicle groups, though IEPA improved pulmonary parameters in female rats during the lung-DEARE phase. Sex-related differences in response to irradiation and IEPA were noted, with females showing a survival advantage. IEPA treatment is compatible with Neulasta® (Pegfilgrastim; PEG-G-CSF); adequately powered studies are needed to confirm the trend toward improved survival over standard care alone. IEPA is a promising development candidate as a medical countermeasure against the effects of acute radiation syndrome. Further confirmatory studies in small and large animal models should validate the robustness and translatability of preliminary rodent data on IEPA's radiomitigative efficacy.
γ-Radiations induced phytoconstituents variability in the grains of cultivated buckwheat species of Himalayan region
Buckwheat is a major traditional crop of hilly regions, capable of growing in adverse climatic conditions. During the survey, it was reported that prolonged consumption of buckwheat leads to digestive problems and numbness. The present study was conducted to study the effect of γ-irradiations on buckwheat to make them suitable for daily consumption.
Trichostatin A mitigates acute and late effects of radiation in intestine by regulation of DNA damage repair and Wnt/TGFβ/Smad signaling
Radiation accidents and misuse of nuclear weapons elevate the risk of development of acute life-threatening injuries as well as their late effects are noted in survivors. Currently, no countermeasure agents are available for the management of radiation-induced GI injury (RIGI) in humans. In the present study, the radiomitigative potential of Trichostatin A (TSA) was evaluated against acute and late RIGI.
Advantages of single high-dose radiation therapy compared with conventional fractionated radiation therapy in overcoming radioresistance
Radioresistance is a major clinical challenge in cancer treatment, as it reduces the effectiveness of radiation therapy (RT). While advances in radiation delivery have enabled the clinical use of high-dose hypofractionated RT, its impact on radioresistant tumors remains unclear. This study aimed to compare the effects of single high-dose RT with conventional fractionated RT on radioresistant breast cancer cells and explore the underlying mechanisms.
Technetium-99m radiolabeling of graphene quantum dots (GQDs) as a new probe for glioblastoma tumor imaging
Cancer diagnosis involves a multi-step process. Accurate identification of the tumor, staging and development of cancer cells is crucial for selecting optimal treatments to minimize disease recurrence. Quantum dots (QDs) represent an exciting class of fluorescent nanoprobes in molecular detection and targeted tumor imaging.
Radiation research trends by young scientists and the future tasks in Northern Japan: report on 'the 10th educational symposium on radiation and health (ESRAH) by young scientists in 2023'
Since 2014, an educational activity on radiation and health in northern Japan has been carried out by young scientists, the so-called 'Educational Symposium on Radiation and Health (ESRAH)'. Close cooperation has been continued in preparing for any possible emergency response to radiation accidents because several facilities, e.g., the Tomari Nuclear Power Plant in Hokkaido and the Low-Level Radioactive Waste Disposal Facility in Aomori prefecture. The ESRAH meeting has provided informational exchange and discussion forum on a broad range of subjects in various. In 2023, the 10th Memorial ESRAH meeting took place to boost scientific understanding and multidisciplinary collaborations for young scientists. Herein, we report on the ESRAH2023 symposium and analyze the research categories of young scientists from the past 10-year presentations.
Combining clinostating and proton irradiation for modeling the space environment: a case study with a Chernobyl accession of
The study of mechanisms of plant responses to extreme conditions, particularly, microgravity and ionizing radiation, is crucial for space exploration. Modern space biology of plants focuses on increasing plant tolerance to harsh conditions of space environment. Given the limited access to the International Space Station, we designed and assembled the 3D clinostat for mimicking microgravity, which, in combination with proton irradiation, allows simulating space conditions. As a case study for testing the device, we studied the effect of clinostating on accession originating from the Chernobyl exclusion zone.
Defining the role of Tip60 in the DNA damage response of glioma cell lines
Glioblastomas are resistant to conventional therapies, including radiotherapy. Our previous study proved that epigenetic regulation influences the radiation response of glioma cells. This study evaluated the role of the acetyltransferase Tip60 on the radiation response.
Mutation profiling through whole genome sequencing of electron beam-induced black gram ( L. Hepper) mutant
Black gram ( [L.] Hepper) is an important annual legume with great economic, nutritional and ecological significance. Novel variations through induced mutagenesis can accelerate narrow genetic base-impeded black gram improvement. This is a first study on characterization of genome-wide mutation spectrum induced by electron beam (EB).
Identification and analysis of gamma-irradiation-induced Stemphylium blight tolerant lentil () mutant
In the short-season winter environment of India and Bangladesh, lentil growth and seed yield are significantly hindered by foliar blight caused by . As the international germplasm pool lacks a resistance source, the study aims to develop a mutant population to identify a high-yielding mutant resistance against the pathogen. A gamma-irradiated population was developed based on its GR50 dose of 248.8 Gy. The screening of almost 130,000 M2 plants identified a tolerant lentil mutant, MM216. The multi-location trials revealed that MM216 showed an impressive and robust resistance; the selected mutant line could be recommended as a donor in the lentil breeding program against the pathogen globally. A 100 g seed was exposed to a GR50 dose to develop the M1 population. At maturity, at least 100 M2 seeds of each 1300 M1 plant were harvested individually. So, almost 130,000 M2 plants were screened in the disease hot spot. The selected mutants were advanced to M7 by screening in the field and challenged in controlled conditions with the pure pathogen isolate. A resistance mutant, MM216, with a per cent disease index (PDI) of <10, was identified where the mean of the check varieties, WBL 77, was >55. The resistance ability was confirmed further in controlled conditions. The fungal and plant DNA ratio was almost negligible in the tolerant mutant, whereas it was 0.17 in WBL77 at 196 h post-inoculation. The selected mutant did not display any yield penalty, but there was a delay in flowering by a week compared to WBL77.
Efficacy and safety of Boron Neutron Capture Therapy: a systematic review
Boron Neutron Capture Therapy (BNCT) is an innovative radiation therapy with significant potential in cancer treatment. This systematic review aimed to comprehensively evaluate the efficacy, safety, and applicability of BNCT across various cancer types.
Clinical results of helical tomotherapy for high-grade gliomas
Radiotherapy-related damage of normal tissue inevitably influences the treatment outcomes in the context of high-grade gliomas (HGGs) treatment. We reported the survival outcomes and toxicities of patients with HGG treated with helical tomotherapy (HT) and the prognostic factors were analyzed.
Studies on the role of moderate doses of ionizing radiation-induced cellular senescence in mouse lung tissue
To investigate the role of moderate doses of ionizing radiation-induced cellular senescence in mouse lung tissue and whole-body inflammation levels.
Determination of RBE of 450 MeV/nucleon carbon ions using the micronucleus test and survival of mice after irradiation in different regions of the Bragg curve
Determination of the value of relative biological effectiveness (RBE) of heavy charged ions in vivo is an important task for their optimal use in particle radiotherapy. The aim of this study was to determine the RBE value of a beam of carbon ions with an energy of 450 MeV/nucleon in different regions of the Bragg curve in irradiation of mice at low, medium, and high doses in comparison with X-ray radiation.
Gamma ray irradiation on Swiss cheese estates (): growth, development, and variation
Swiss Cheese () is an ornamental plant valued for its exotic leaves with openings and for the variety of colors. The technique of controlled exposure to gamma radiation was investigated to induce variegation (color change) in the leaves of this plant.
Adaptation to mountain γ-background: bacteria speciation
To study the adaptation of bacteria to the natural γ-background of mountains and anthropogenic emissions from nuclear power plants; to establish the main factors of variability and speciation of bacteria.
Valproic acid alleviates total-body irradiation-induced small intestinal mucositis in mice
Gastrointestinal (GI) injury is one of the serious problems of total-body irradiation (TBI). However, no fundamental treatment for TBI and other radiation-induced GI injury has yet been established. Valproic acid (VPA) administration reduces mortality in mice subjected to total-body irradiation (TBI) with X-rays. This study aimed to evaluate the effects of VPA on GI injury induced by TBI in mice.
Personalized dosimetry assessment of [Lu]Lu-PSMA-617 radioligand therapy in the management of metastatic castration-resistant prostate cancer
Prostate-specific membrane antigen (PSMA)-targeted radioligand therapy (RLT) is revolutionizing the treatment landscape for metastatic castration-resistant prostate cancer (mCRPC) patients. This study aimed to establish patient-specific radiation dosimetry for [Lu]Lu-PSMA-617 RLT in Iranian patients with mCRPC.
The very (radio)active life of Pierre C.C
In this short tale, we describe a year of Pierre Chris Curry's ionizing radiation (IR) exposure, assessing and summarizing how much he has been exposed to over a year of his fictive life, cumulating the different types of exposures (either due to natural radiation, occupational and medical exposure), while staying reasonably credible. We have limited ourselves to IR exposure. As a recognized specialist in interventional cardiac surgery, Pierre provides lectures at international conferences requiring overseas flights. When not traveling, Pierre lives in Brittany in an area where there is high natural background radiation, owing to significant concentrations of radon, a radioactive gas produced from the natural radioactive decay of uranium found in rocks, granite in this case.