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Joshi A, Viswanathan SH, Jaiswal AK, Sadeghi K, Bartels L, Jain RM, Pathikonda G, Vanos JK, Middel A, Rykaczewski K. Characterization of human extreme heat exposure using an outdoor thermal manikin. Sci Total Environ 2024; 923:171525. [PMID: 38458460 DOI: 10.1016/j.scitotenv.2024.171525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 02/08/2024] [Accepted: 03/04/2024] [Indexed: 03/10/2024]
Abstract
Extreme heat is a current and growing global health concern. Current heat exposure models include meteorological and human factors that dictate heat stress, comfort, and risk of illness. However, radiation models simplify the human body to a cylinder, while convection ones provide conflicting predictions. To address these issues, we introduce a new method to characterize human exposure to extreme heat with unprecedented detail. We measure heat loads on 35 body surface zones using an outdoor thermal manikin ("ANDI") alongside an ultrasonic anemometer array and integral radiation measurements (IRM). We show that regardless of body orientation, IRM and ANDI agree even under high solar conditions. Further, body parts can be treated as cylinders, even in highly turbulent flow. This geometry-rooted insight yields a whole-body convection correlation that resolves prior conflicts and is valid for diverse indoor and outdoor wind flows. Results will inform decision-making around heat protection, adaptation, and mitigation.
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Affiliation(s)
- Ankit Joshi
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA; Julie Ann Wrigley Global Futures Laboratory, Arizona State University, Tempe, AZ, USA
| | - Shri H Viswanathan
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA
| | - Ankush K Jaiswal
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA; Julie Ann Wrigley Global Futures Laboratory, Arizona State University, Tempe, AZ, USA
| | - Kambiz Sadeghi
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA; Julie Ann Wrigley Global Futures Laboratory, Arizona State University, Tempe, AZ, USA
| | - Lyle Bartels
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA
| | - Rajan M Jain
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA
| | - Gokul Pathikonda
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA
| | - Jennifer K Vanos
- Julie Ann Wrigley Global Futures Laboratory, Arizona State University, Tempe, AZ, USA; School of Sustainability, Arizona State University, Tempe, AZ, USA
| | - Ariane Middel
- Julie Ann Wrigley Global Futures Laboratory, Arizona State University, Tempe, AZ, USA; School of Arts, Media and Engineering, Arizona State University, Tempe, AZ, USA; School of Computing and Augmented Intelligence, Arizona State University, Tempe, AZ, USA
| | - Konrad Rykaczewski
- School for Engineering of Matter, Transport and Energy, Arizona State University, Tempe, AZ, USA; Julie Ann Wrigley Global Futures Laboratory, Arizona State University, Tempe, AZ, USA.
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Wang S, Zuo Z, Ouyang Z, Liu X, Wang J, Shan Y, Meng R, Zhao Z, Liu X, Liu X, Jin Y, Li Z, Zhang H, Wang L, Cong Y. Sequential administration of delta-tocotrienol ameliorates radiation-induced myelosuppression in mice and non-human primates through inducing G-CSF production. Biochem Biophys Res Commun 2024; 704:149661. [PMID: 38417343 DOI: 10.1016/j.bbrc.2024.149661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Revised: 01/23/2024] [Accepted: 02/07/2024] [Indexed: 03/01/2024]
Abstract
To date only four recombinant growth factors, including Filgrastim (rhG-CSF), have been approved by FDA as radiomitigators to ameliorate hematopoietic acute radiation syndrome (H-ARS). These approved agents are not stable under room-temperature, needing to be stored at 2-8 °C, and would not be feasible in a mass casualty scenario where rapid and cost-effective intervention is crucial. Delta-tocotrienol (δ-T3H), the most potent G-CSF-inducing agent among vitamin E isoforms, exhibited efficiency and selectivity on G-CSF production in comparison with TLR and STING agonists in mice. Five-dose δ-T3H was utilized as the optimal therapeutic regimen due to long-term G-CSF production and the best peripheral blood (PB) recovery of irradiated mice. Comparable with rhG-CSF, sequential administration of δ-T3H post-irradiation improved hematologic recovery and accelerated the regeneration of hematopoietic stem cells (HSCs) and hematopoietic progenitor cells (HPCs) in the bone marrow (BM) and spleen of 6.5Gy irradiated mice; and consistently enhanced repopulation of BM-HSCs. In 4.0Gy irradiated nonhuman primates, δ-T3H exhibited comparable efficacy as rhG-CSF to promote PB recovery and colony-formation of BM-HPCs. Altogether, we demonstrated that sequential administration of delta-tocotrienol ameliorates radiation-induced myelosuppression in mice and non-human primates through inducing G-CSF production, indicated δ-T3H as a promising radiomitigator for the management of H-ARS, particularly in a mass casualty scenario.
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Affiliation(s)
- Shaozheng Wang
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, No.27 Taiping Road, Haidian District, 100850, Beijing, China
| | - Zongchao Zuo
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, No.27 Taiping Road, Haidian District, 100850, Beijing, China; Faculty of Environment and Life, Beijing University of Technology, No.100, Pingleyuan, Chaoyang, 100124, Beijing, China
| | - Zhangyi Ouyang
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, No.27 Taiping Road, Haidian District, 100850, Beijing, China
| | - Xinyu Liu
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, No.27 Taiping Road, Haidian District, 100850, Beijing, China; College of Life Sciences, Hebei University, No.180 Wusi East Road, 071000, Baoding, China
| | - Junke Wang
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, No.27 Taiping Road, Haidian District, 100850, Beijing, China
| | - Yajun Shan
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, No.27 Taiping Road, Haidian District, 100850, Beijing, China
| | - Ruoxi Meng
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, No.27 Taiping Road, Haidian District, 100850, Beijing, China
| | - Zhenhu Zhao
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, No.27 Taiping Road, Haidian District, 100850, Beijing, China
| | - Xiaolan Liu
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, No.27 Taiping Road, Haidian District, 100850, Beijing, China
| | - Xiaoyan Liu
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, No.27 Taiping Road, Haidian District, 100850, Beijing, China
| | - Yiguang Jin
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, No.27 Taiping Road, Haidian District, 100850, Beijing, China
| | - Zhongtang Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, No.38 Xueyuan Road, Haidian District, 100191, Beijing, China
| | - Hong Zhang
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, No.27 Taiping Road, Haidian District, 100850, Beijing, China.
| | - Limei Wang
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, No.27 Taiping Road, Haidian District, 100850, Beijing, China.
| | - Yuwen Cong
- Beijing Key Laboratory for Radiobiology, Department of Experimental Hematology and Biochemistry, Beijing Institute of Radiation Medicine, No.27 Taiping Road, Haidian District, 100850, Beijing, China.
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Kruse S, Rajapaksha H, LaVerne J, Mason S, Forbes T. Radiation-Induced Defects in Uranyl Trinitrate Solids. Chemistry 2024:e202400956. [PMID: 38619503 DOI: 10.1002/chem.202400956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 04/11/2024] [Accepted: 04/12/2024] [Indexed: 04/16/2024]
Abstract
Actinides are inherently radioactive; thus, ionizing radiation is emitted by these elements can have profound effects on its surrounding chemical environment through the formation of free radical species. While previous work has noted that the presence of free radicals in the system impacts the redox state of the actinides, there is little atomistic understanding of how these metal cations interact with free radicals. Herein, we explore the effects of radiation (UV and γ) on three U(VI) trinitrate complexes, M[UO2(NO3)3] (where M = K+, Rb+, Cs+), and their respective nitrate salts in the solid state via electron paramagnetic resonance (EPR) and Raman spectroscopy paired with Density Functional Theory (DFT) methods. We find that the alkali salts form nitrate radicals under UV and γ irradiation, but also note the presence of additional degradation products. M[UO2(NO3)3] solids also form nitrate radicals and additional DFT calculations indicate the species corresponds to a change from the bidentate bound nitrate anion into a monodentate NO3• radical. Computational studies also highlight the need to include the second sphere coordination environment around the [UO2(NO3)3]0,1 species to gain agreement between the experimental and predicted EPR signatures.
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Affiliation(s)
- Samantha Kruse
- The University of Iowa, Chemistry, 230 N Madison St, 52240, Iowa City, UNITED STATES
| | | | - Jay LaVerne
- University of Notre Dame, Physics and Astronomy, UNITED STATES
| | - Sara Mason
- Brookhaven National Laboratory, Center for Functional Nanomaterials, UNITED STATES
| | - Tori Forbes
- University of Iowa, Department of Chemistry, Chemistry Building W374, 52242, Iowa City, UNITED STATES
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Bontrager HL, Hinton TG, Okuda K, Beasley JC. The impact of sampling scale: A comparison of methods for estimating external contaminant exposure in free-ranging wildlife. Sci Total Environ 2024; 921:171012. [PMID: 38369157 DOI: 10.1016/j.scitotenv.2024.171012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 02/08/2024] [Accepted: 02/14/2024] [Indexed: 02/20/2024]
Abstract
The impacts of contaminants on wildlife are dose dependent, and thus being able to track or predict exposure following contamination events is important for monitoring ecosystem health. However, the ability to track exposure in free-ranging wildlife is often severely limited. Consequently, researchers have predominantly relied on simple methods for estimating contaminant exposures in wildlife with little regard for spatial contaminant heterogeneity or an animal's use of diverse habitats. We evaluated the influence sampling scale (i.e., how finely contaminant distribution and organism's spatial use of the landscape is mapped) has on (1) realism and (2) conservativeness of exposure estimates. To do this, we monitored the actual exposure of wild boar (Sus scrofa) in Fukushima, Japan to radioactive contamination using GPS-coupled contaminant monitors placed on individual animals. We compared empirical exposures to estimates generated by combining varying amounts of information about an individual boar's location and/or movement, with the distribution of contamination on the landscape. We found that the most realistic exposure estimates were produced when finer-scale contaminant distribution surveys (e.g., airborne surveys) were combined with more accurate estimates of an individual's space use (e.g., home ranges or core areas). Importantly, estimates of exposure based on single point surveys at a trap site (a simple method commonly used in the literature), did not correlate with actual exposure rates, suggesting dose-effects studies using this method may result in spurious conclusions. These results suggest that researchers seeking realistic estimates of exposure, such as in dose-effect studies, should ensure they have adequately accounted for fine-scale contaminant distribution patterns and areas of higher use by study organisms. However, conservative estimates of exposure (i.e., intentionally over-predicting exposure as is done in initial tiers of ecological risk analyses) were not as scale sensitive and could be achieved with a single known location and coarse contaminant distribution maps.
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Affiliation(s)
- Helen L Bontrager
- Savannah River Ecology Laboratory, Warnell School of Forestry and Natural Resources, University of Georgia, Aiken, SC 29808, USA
| | - Thomas G Hinton
- Centre of Excellence in Environmental Radioactivity (CERAD), Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, P.O. Box 5003, N-1433 Ås, Norway; Institute of Environmental Radioactivity, 1 Kanayagawa, Fukushima City, Fukushima 960-1296, Japan
| | - Kei Okuda
- Faculty of Human Environmental Sciences, Hiroshima Shudo University, Hiroshima 731-3195, Japan
| | - James C Beasley
- Savannah River Ecology Laboratory, Warnell School of Forestry and Natural Resources, University of Georgia, Aiken, SC 29808, USA.
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5
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Başpınar O, Kervancıoğlu M, Kılınç M, Şahin DA, Temel MT. Evaluation of the reduction of radiation dose received by pediatric patients in new-generation biplane angiocardiography: Randomized controlled study. Heliyon 2024; 10:e28138. [PMID: 38590841 PMCID: PMC10999867 DOI: 10.1016/j.heliyon.2024.e28138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 02/23/2024] [Accepted: 03/12/2024] [Indexed: 04/10/2024] Open
Abstract
Objective We aimed to evaluate the safety and efficacy of radiation dose reduction with a new-generation biplane angiocardiography system in patients undergoing transcatheter isolated patent ductus arteriosus (PDA) closure. Materials and methods Fifty pediatric patients who underwent transcatheter PDA closure were randomly divided into two groups as normal radiation dose and low dose. Patients who required additional procedures other than PDA closure were excluded. PDA closure was performed according to the angiographic measurement of the defect. After the procedure, age, weight, sex, PDA measurements, and radiation measurements such as dose-area product (DAP, Gy.cm2) and air kerma (AK, mGy) were compared between the groups. Results There was no statistically significant difference between the groups in age, sex, weight, PDA diameter, PDA type, device used, and device diameter (p > 0.05). While there was no statistically significant difference between the groups in terms of cine recording, number of recorded images, and fluoroscopy time (p > 0.05), there was a statistically significant difference between the total DAP, cine and fluoroscopy DAP, total AK, frontal and lateral tube AK, and DAP/kg (mGy.m2/kg) measurements (p < 0.05). Conclusion Transcatheter PDA closure with a low radiation dose is as effective as that with a normal radiation dose. The radiation dose received by the patient during the procedure was significantly reduced. With the vision provided by this study, it seems possible to work with a low radiation dose in other groups of patients.
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Affiliation(s)
- Osman Başpınar
- Gaziantep University, Faculty of Medicine, Department of Pediatric Cardiology, Turkey
| | - Mehmet Kervancıoğlu
- Gaziantep University, Faculty of Medicine, Department of Pediatric Cardiology, Turkey
| | - Metin Kılınç
- Gaziantep University, Faculty of Medicine, Department of Pediatric Cardiology, Turkey
| | - Derya Aydın Şahin
- Gaziantep University, Faculty of Medicine, Department of Pediatric Cardiology, Turkey
| | - Münevver Tuğba Temel
- Gaziantep University, Faculty of Medicine, Department of Pediatric Cardiology, Turkey
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Xu Y, Men W, Yu Y, Wang F. Assessment of radiation in fishes derived from radiocesium in the port of Fukushima Daiichi nuclear power plant. Mar Pollut Bull 2024; 202:116301. [PMID: 38608429 DOI: 10.1016/j.marpolbul.2024.116301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Revised: 03/23/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024]
Abstract
This study established specialized radiation dose models to evaluate the internal radiation doses derived from 137Cs and 134Cs in fishes in the port of the Fukushima Daiichi Nuclear Power Plant from 2012 to 2023. By August 2018, the activities of 134Cs and 137Cs in fishes decreased at the T1/2 of 176 d and 191 d, respectively. The corresponding mass concentrations were far lower than 1 mg/kg and the chemical toxicity can be negligible. Regarding radiotoxicity, 18,000 Bq/kgfresh weight of 134Cs and 137Cs in grouper Sebastes schlegelii produced 276 μGy/h of radiation dose, which was below the no-effect-dose-rate benchmarks (400 μGy/h). 740,000 Bq/kgfresh weight of 134Cs and 137Cs in greenling Hexagrammos otakii produced 12,600 μGy/h of radiation dose, which was much higher than 400 μGy/h, indicating the possibility of radiation effects. If a person eats these two reported fishes, the resulting committed effective doses for humans are 7.7 μSv and 6.31 mSv, respectively.
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Affiliation(s)
- Yaoyao Xu
- School of Marine Sciences, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Wu Men
- School of Marine Sciences, Nanjing University of Information Science and Technology, Nanjing 210044, China.
| | - Yue Yu
- School of Marine Sciences, Nanjing University of Information Science and Technology, Nanjing 210044, China
| | - Fenfen Wang
- The Laboratory of Marine Ecological and Environmental Early Warning and Monitoring, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen 361005, China.
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Esmaeilzadeh M, Bronzlik P, Solmaz H, Polemikos M, Heissler HE, Raab P, Lanfermann H, Krauss JK. Reducing radiation exposure and costs: CT body scout views with an enhanced protocol versus conventional radiography after shunt surgery. Clin Neurol Neurosurg 2024; 240:108281. [PMID: 38604085 DOI: 10.1016/j.clineuro.2024.108281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 04/01/2024] [Accepted: 04/07/2024] [Indexed: 04/13/2024]
Abstract
OBJECTIVE Ventriculoperitoneal shunt implantation has become standard treatment for cerebrospinal fluid diversion, besides endoscopic third ventriculostomy for certain indications. Postoperative X-ray radiography series of skull, chest and abdomen combined with cranial CT are obtained routinely in many institutions to document the shunt position and valve settings in adult patients. Measures to reduce postoperative radiation exposure are needed, however, there is only limited experience with such efforts. Here, we aim to compare routine postoperative cranial CT plus conventional radiography series (retrospective arm) with cranial CT and body scout views only (prospective arm) concerning both diagnostic quality and radiation exposure. PATIENTS AND METHODS After introduction of an enhanced CT imaging protocol, routine skull and abdomen radiography was no longer obtained after VP shunt surgery. The image studies of 25 patients with routine postoperative cranial CT and conventional radiography (retrospective arm of study) were then compared to 25 patients with postoperative cranial CT and CT body scout views (prospective arm of study). Patient demographics such as age, sex and primary diagnosis were collected. The image quality of conventional radiographic images and computed tomography scout views images were independently analyzed by one neurosurgeon and one neuroradiologist. RESULTS There were no differences in quality assessments according to three different factors determined by two independent investigators for both groups. There was a statistically significant difference, however, between the conventional radiography series group and the CT body scout view imaging group with regard to radiation exposure. The effective dose estimation calculation yielded a difference of 0.05 mSv (two-tailed t-test, p = 0.044) in favor of CT body scout view imaging. Furthermore, the new enhanced protocol resulted in a reduction of cost and the use of human resources. CONCLUSION CT body scout view imaging provides sufficient imaging quality to determine shunt positioning and valve settings. With regard to radiation exposure and costs, we suggest that conventional postoperative shunt series may be abandoned.
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Affiliation(s)
| | - Paul Bronzlik
- Institute for Diagnostic and Interventional Neuroradiology, Hannover Medical School, Hannover, Germany
| | - Hüseyin Solmaz
- Department of Neurosurgery, Hannover Medical School, Hannover, Germany
| | - Manolis Polemikos
- Department of Neurosurgery, Hannover Medical School, Hannover, Germany
| | - Hans E Heissler
- Department of Neurosurgery, Hannover Medical School, Hannover, Germany
| | - Peter Raab
- Institute for Diagnostic and Interventional Neuroradiology, Hannover Medical School, Hannover, Germany
| | - Heinrich Lanfermann
- Institute for Diagnostic and Interventional Neuroradiology, Hannover Medical School, Hannover, Germany
| | - Joachim K Krauss
- Department of Neurosurgery, Hannover Medical School, Hannover, Germany
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Guitart C, Bobillo-Perez S, Rodríguez-Fanjul J, Carrasco JL, Brotons P, López-Ramos MG, Cambra FJ, Balaguer M, Jordan I. Lung ultrasound and procalcitonin, improving antibiotic management and avoiding radiation exposure in pediatric critical patients with bacterial pneumonia: a randomized clinical trial. Eur J Med Res 2024; 29:222. [PMID: 38581075 PMCID: PMC10998368 DOI: 10.1186/s40001-024-01712-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 02/03/2024] [Indexed: 04/07/2024] Open
Abstract
BACKGROUND Pneumonia is a major public health problem with an impact on morbidity and mortality. Its management still represents a challenge. The aim was to determine whether a new diagnostic algorithm combining lung ultrasound (LUS) and procalcitonin (PCT) improved pneumonia management regarding antibiotic use, radiation exposure, and associated costs, in critically ill pediatric patients with suspected bacterial pneumonia (BP). METHODS Randomized, blinded, comparative effectiveness clinical trial. Children < 18y with suspected BP admitted to the PICU from September 2017 to December 2019, were included. PCT was determined at admission. Patients were randomized into the experimental group (EG) and control group (CG) if LUS or chest X-ray (CXR) were done as the first image test, respectively. Patients were classified: 1.LUS/CXR not suggestive of BP and PCT < 1 ng/mL, no antibiotics were recommended; 2.LUS/CXR suggestive of BP, regardless of the PCT value, antibiotics were recommended; 3.LUS/CXR not suggestive of BP and PCT > 1 ng/mL, antibiotics were recommended. RESULTS 194 children were enrolled, 113 (58.2%) females, median age of 134 (IQR 39-554) days. 96 randomized into EG and 98 into CG. 1. In 75/194 patients the image test was not suggestive of BP with PCT < 1 ng/ml; 29/52 in the EG and 11/23 in the CG did not receive antibiotics. 2. In 101 patients, the image was suggestive of BP; 34/34 in the EG and 57/67 in the CG received antibiotics. Statistically significant differences between groups were observed when PCT resulted < 1 ng/ml (p = 0.01). 3. In 18 patients the image test was not suggestive of BP but PCT resulted > 1 ng/ml, all of them received antibiotics. A total of 0.035 mSv radiation/patient was eluded. A reduction of 77% CXR/patient was observed. LUS did not significantly increase costs. CONCLUSIONS Combination of LUS and PCT showed no risk of mistreating BP, avoided radiation and did not increase costs. The algorithm could be a reliable tool for improving pneumonia management. CLINICAL TRIAL REGISTRATION NCT04217980.
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Affiliation(s)
- Carmina Guitart
- Paediatric Intensive Care Unit, Hospital Sant Joan de Déu, University of Barcelona, Passeig de Sant Joan de Déu, 2, 08950, Esplugues de Llobregat, Barcelona, Spain
- Immunological and Respiratory Disorders in the Pediatric Critical Patient Research Group, Institut de Recerca Sant Joan de Déu, University of Barcelona, Barcelona, Spain
- Pediatric Infectious Diseases Research Group, Institut de Recerca Sant Joan de Déu, Santa Rosa 39-57, 08950, Esplugues de Llogregat, Spain
| | - Sara Bobillo-Perez
- Paediatric Intensive Care Unit, Hospital Sant Joan de Déu, University of Barcelona, Passeig de Sant Joan de Déu, 2, 08950, Esplugues de Llobregat, Barcelona, Spain
- Immunological and Respiratory Disorders in the Pediatric Critical Patient Research Group, Institut de Recerca Sant Joan de Déu, University of Barcelona, Barcelona, Spain
- Pediatric Infectious Diseases Research Group, Institut de Recerca Sant Joan de Déu, Santa Rosa 39-57, 08950, Esplugues de Llogregat, Spain
| | - Javier Rodríguez-Fanjul
- Neonatal Intensive Care Unit, Department of Pediatrics, Hospital Germans Trias i Pujol, Autonomous University of Barcelona, Badalona, Spain
| | - José Luis Carrasco
- Department of Basic Clinical Practice, University of Barcelona, Barcelona, Spain
| | - Pedro Brotons
- Consorcio de Investigación Biomédica en Red de Epidemiología y Salud (CIBERESP), Madrid, Spain
- School of Medicine and Health Sciences, Universitat Internacional de Catalunya, Barcelona, Spain
| | | | - Francisco José Cambra
- Paediatric Intensive Care Unit, Hospital Sant Joan de Déu, University of Barcelona, Passeig de Sant Joan de Déu, 2, 08950, Esplugues de Llobregat, Barcelona, Spain
| | - Mònica Balaguer
- Paediatric Intensive Care Unit, Hospital Sant Joan de Déu, University of Barcelona, Passeig de Sant Joan de Déu, 2, 08950, Esplugues de Llobregat, Barcelona, Spain.
- Immunological and Respiratory Disorders in the Pediatric Critical Patient Research Group, Institut de Recerca Sant Joan de Déu, University of Barcelona, Barcelona, Spain.
- Pediatric Infectious Diseases Research Group, Institut de Recerca Sant Joan de Déu, Santa Rosa 39-57, 08950, Esplugues de Llogregat, Spain.
| | - Iolanda Jordan
- Paediatric Intensive Care Unit, Hospital Sant Joan de Déu, University of Barcelona, Passeig de Sant Joan de Déu, 2, 08950, Esplugues de Llobregat, Barcelona, Spain
- Immunological and Respiratory Disorders in the Pediatric Critical Patient Research Group, Institut de Recerca Sant Joan de Déu, University of Barcelona, Barcelona, Spain
- Pediatric Infectious Diseases Research Group, Institut de Recerca Sant Joan de Déu, Santa Rosa 39-57, 08950, Esplugues de Llogregat, Spain
- Consorcio de Investigación Biomédica en Red de Epidemiología y Salud (CIBERESP), Madrid, Spain
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Calabrese EJ, Selby PB. Muller and mutations: mouse study of George Snell (a postdoc of Muller) fails to confirm Muller's fruit fly findings, and Muller fails to cite Snell's findings. Arch Toxicol 2024:10.1007/s00204-024-03718-1. [PMID: 38573337 DOI: 10.1007/s00204-024-03718-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 02/28/2024] [Indexed: 04/05/2024]
Abstract
In 1931, Hermann J. Muller's postdoctoral student, George D. Snell (Nobel Prize recipient--1980) initiated research to replicate with mice Muller's X-ray-induced mutational findings with fruit flies. Snell failed to induce the two types of mutations of interest, based on fly data (sex-linked lethals/recessive visible mutations) even though the study was well designed, used large doses of X-rays, and was published in Genetics. These findings were never cited by Muller, and the Snell paper (Snell, Genetics 20:545-567, 1935) did not cite the 1927 Muller paper (Muller, Science 66:84, 1927). This situation raises questions concerning how Snell wrote the paper (e.g., ignoring the significance of not providing support for Muller's findings in a mammal). The question may be raised whether professional pressures were placed upon Snell to downplay the significance of his findings, which could have negatively impacted the career of Muller and the LNT theory. While Muller would receive worldwide attention, and receive the Nobel Prize in 1946 "for the discovery that mutations can be induced by X-rays," Snell's negative mutation data were almost entirely ignored by his contemporary and subsequent radiation genetics/mutation researchers. This raises questions concerning how the apparent lack of interest in Snell's negative findings helped Muller professionally, including his success in using his fruit fly data to influence hereditary and cancer risk assessment and to obtain the Nobel Prize.
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Affiliation(s)
- Edward J Calabrese
- Toxicology, School of Public Health and Health Sciences, Department of Environmental Health Sciences, Morrill I, N344, University of Massachusetts, Amherst, MA, 01003, USA.
| | - Paul B Selby
- Retired from Oak Ridge National Laboratory at Oak Ridge, TN, 4088 Notting Hill Gate Road, Upper Arlington, OH, 43220, USA
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10
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Strohm AO, Johnston C, Hernady E, Marples B, O'Banion MK, Majewska AK. Cranial ir radiation disrupts homeostatic microglial dynamic behavior. J Neuroinflammation 2024; 21:82. [PMID: 38570852 PMCID: PMC10993621 DOI: 10.1186/s12974-024-03073-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 03/22/2024] [Indexed: 04/05/2024] Open
Abstract
Cranial irradiation causes cognitive deficits that are in part mediated by microglia, the resident immune cells of the brain. Microglia are highly reactive, exhibiting changes in shape and morphology depending on the function they are performing. Additionally, microglia processes make dynamic, physical contacts with different components of their environment to monitor the functional state of the brain and promote plasticity. Though evidence suggests radiation perturbs homeostatic microglia functions, it is unknown how cranial irradiation impacts the dynamic behavior of microglia over time. Here, we paired in vivo two-photon microscopy with a transgenic mouse model that labels cortical microglia to follow these cells and determine how they change over time in cranial irradiated mice and their control littermates. We show that a single dose of 10 Gy cranial irradiation disrupts homeostatic cortical microglia dynamics during a 1-month time course. We found a lasting loss of microglial cells following cranial irradiation, coupled with a modest dysregulation of microglial soma displacement at earlier timepoints. The homogeneous distribution of microglia was maintained, suggesting microglia rearrange themselves to account for cell loss and maintain territorial organization following cranial irradiation. Furthermore, we found cranial irradiation reduced microglia coverage of the parenchyma and their surveillance capacity, without overtly changing morphology. Our results demonstrate that a single dose of radiation can induce changes in microglial behavior and function that could influence neurological health. These results set the foundation for future work examining how cranial irradiation impacts complex cellular dynamics in the brain which could contribute to the manifestation of cognitive deficits.
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Affiliation(s)
- Alexandra O Strohm
- Department of Environmental Medicine, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - Carl Johnston
- Department of Pediatrics, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - Eric Hernady
- Department of Radiation Oncology, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - Brian Marples
- Department of Radiation Oncology, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - M Kerry O'Banion
- Department of Neuroscience, University of Rochester Medical Center, Rochester, NY, 14642, USA
- Del Monte Institute for Neuroscience, University of Rochester Medical Center, Rochester, NY, 14642, USA
| | - Ania K Majewska
- Department of Neuroscience, University of Rochester Medical Center, Rochester, NY, 14642, USA.
- Del Monte Institute for Neuroscience, University of Rochester Medical Center, Rochester, NY, 14642, USA.
- Center for Visual Science, University of Rochester Medical Center, Rochester, NY, 14642, USA.
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11
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Elbahi A, Thomas O, Dungey M, Randall C, Menon DK. Factors associated with increased radiation exposure in the fixation of proximal femoral fractures. Ann R Coll Surg Engl 2024. [PMID: 38563063 DOI: 10.1308/rcsann.2023.0092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024] Open
Abstract
INTRODUCTION When using radiation intraoperatively, a surgeon should aim to keep the radiation dose as low as is reasonably achievable to obtain the therapeutic goal. We aimed to investigate factors associated with increased radiation exposure in fixation of proximal femur fractures. METHODS We assessed 369 neck of femur fractures over a 1-year period in a district general hospital. All hip fracture subtypes that had undergone surgical fixation were included. We assessed the relationship between type of fracture, implants used and surgeon level of experience with the dose-area product (DAP; cGy/cm2) and screening time (dS). We also looked at the quality of reduction and fixation and its effect on the radiation exposure. RESULTS A total of 184 patients were included in our analysis; 185 patients who were treated with hip arthroplasty were excluded. There was a significant association between higher DAP and fracture subtype (p = 0.001), fracture complexity (p < 0.001), if an additional implant was used (p = 0.001), if fixation was satisfactory (p = 0.002) and operative time (p < 0.001). DAP was higher with a proximal femoral nail than with a dynamic hip screw, especially when a long nail was used. There was some evidence of an association between the surgeon's level of experience and DAP exposure, although this was not statistically significant (p = 0.069). CONCLUSIONS Increased radiation in proximal femur fractures is seen in the fixation of complex fractures, some subtypes, with certain types of implants used and if an additional implant was required. Surgeon seniority did not result in less radiation exposure, which is in contrast to other published studies.
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Affiliation(s)
- A Elbahi
- Dartford and Gravesham NHS Trust, UK
| | - O Thomas
- Kettering General Hospital NHS Foundation Trust, UK
| | - M Dungey
- Kettering General Hospital NHS Foundation Trust, UK
| | - C Randall
- University Hospitals of Leicester NHS Trust, UK
| | - D K Menon
- Kettering General Hospital NHS Foundation Trust, UK
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12
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Dagan O, Perlow A, Shoffel-Havakuk H, Biadsee A, Moore A, Ritter A, Gilat H, Popovtzer A, Alkan U. Effect of Radiological Tumor Thickness on Prognosis of Early Glottic-Squamous Cell Carcinoma Treated With Radiation. J Voice 2024:S0892-1997(24)00056-0. [PMID: 38570226 DOI: 10.1016/j.jvoice.2024.02.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/18/2024] [Accepted: 02/19/2024] [Indexed: 04/05/2024]
Abstract
OBJECTIVES Tumor depth of invasion is a known prognostic factor in several head and neck cancers, but data on early laryngeal squamous cell carcinoma (SCC) are sparse. In this study, we aim to determine whether radiological tumor thickness serves as a prognostic factor in early SCC of the glottis treated with radiation. METHODS One hundred thirty-two adult patients (age >18 years) underwent pretreatment computed tomography (CT) and were treated with radiation for pathologically proven early stage (T1 or T2) glottic SCC. Thirty-eight were excluded because the tumor could not be correctly identified on the CT scan, and an additional three patients because of insufficient data. RESULTS The final cohort consisted of 91 patients, 84 (90.3%) men and 7 (9.7%) women aged 39.86-86.53 (mean 65.55 ± 12.76) years. Mean tumor thickness was 0.59 ± 0.19 cm in patients with T1 tumors and 0.79 ± 0.21 cm in patients with T2 tumors. The optimal cutoff value for 5-year disease-free survival (DFS), using the Youden index (sensitivity: 81.2%, specificity 65.3%), was 0.7 cm. A significant advantage in 5-year overall survival (OAS) and 5-year DFS for tumor thickness of <0.7 cm (P = 0.01 and P < 0.01, respectively) was found, these findings were consistent also when each stage was examined separately (T1 vs T2). CONCLUSION Radiological tumor thickness appears to significantly predict OAS and DFS in early glottic SCC patients. IMPLICATION FOR PRACTICE Tumor thickness may be considered as an auxiliary aid in deciding follow-up time and frequency, proper treatment, and determining prognosis.
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Affiliation(s)
- Or Dagan
- Department of Dermatology and Venereology, Soroka Medical Center, Be'er Sheva, Israel
| | - Alain Perlow
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Department of Radiology, Rabin Medical Center - Beilinson Hospital, Petah Tikva, Israel
| | - Hagit Shoffel-Havakuk
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Department of Otorhinolaryngology-Head and Neck Surgery, Rabin Medical Center - Beilinson Hospital, Petah Tikva, Israel
| | - Ameen Biadsee
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Department of Otorhinolaryngology-Head and Neck Surgery, Meir Medical Center, Kfar Saba, Israel
| | - Assaf Moore
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Rabin Medical Center, Davidoff Cancer Center, Petah Tikva, Israel
| | - Amit Ritter
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Department of Otorhinolaryngology-Head and Neck Surgery, Rabin Medical Center - Beilinson Hospital, Petah Tikva, Israel
| | - Hanna Gilat
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Department of Otorhinolaryngology-Head and Neck Surgery, Rabin Medical Center - Beilinson Hospital, Petah Tikva, Israel
| | - Aron Popovtzer
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Rabin Medical Center, Davidoff Cancer Center, Petah Tikva, Israel
| | - Uri Alkan
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Department of Otorhinolaryngology-Head and Neck Surgery, Rabin Medical Center - Beilinson Hospital, Petah Tikva, Israel.
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13
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Hashmi SK, Powles RC, Ma D, Muhsen IN, Aljurf M, Niederwieser D, Weisdorf DJ, Koh MBC, Greinix H. Radiation hazards of the Ukraine nuclear power plants: how can international blood and marrow stem cell transplant societies help? Ann Hematol 2024; 103:1121-1129. [PMID: 37280449 DOI: 10.1007/s00277-023-05191-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Accepted: 12/18/2022] [Indexed: 06/08/2023]
Abstract
Any conflict in countries that process nuclear power plants raises concerns of the potential radiation injuries to the people in that region and beyond such as the current conflict in Ukraine. International healthcare organizations and societies should prepare for the potential scenarios of nuclear incidents. The Worldwide Network for Blood and Marrow Transplantation (WBMT) and its members, have recent experience preparing for this type of events such as the Fukushima incident in 2011. In this article, we discuss the risks of radiation exposure, current guidelines, and scientific evidence on hematopoietic support, including the role of hematopoietic stem cell transplant (HCT) for those exposed to nuclear radiation, and the role that the WBMT and other global BMT societies can play in triaging and managing people suffering from radiation injuries.
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Affiliation(s)
- Shahrukh K Hashmi
- Division of Hematology, Department of Medicine, Mayo Clinic, Rochester, MN, USA.
- Department of Medicine, Sheikh Shakbout Medical City, Abu Dhabi, UAE.
- College of Medicine & Health Sciences, Khalifa University, Abu Dhabi, UAE.
| | - Ray C Powles
- Cancer Centre London, 49 Parkside, Wimbledon, London, SW19 5NB, UK
| | - David Ma
- Department of Haematology, St Vincent's Hospital, Darlinghurst, NSW, Australia
| | - Ibrahim N Muhsen
- Section of Hematology and Oncology, Department of Medicine, Baylor College of Medicine, Houston, TX, USA
| | - Mahmoud Aljurf
- Oncology Center, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Dietger Niederwieser
- University of Leipzig, Leipzig, Germany
- Aichi Medical University, Nagakute, Japan
| | - Daniel J Weisdorf
- Division of Hematology, Oncology and Transplantation, University of Minnesota, Minneapolis, MN, USA
| | - Mickey B C Koh
- Infection and Immunity Clinical Academic Group, St George's University of London, London, UK
- Department of Haematology, St George's University Hospitals, London, UK
- Cell Therapy Programme, Health Sciences Authority, Outram, Singapore
| | - Hildegard Greinix
- Division of Hematology, Department of Internal Medicine, Medical University of Graz, Graz, Austria
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14
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Zhang B, Zhang M, Tian J, Zhang X, Zhang D, Li J, Yang L. Advances in the regulation of radiation-induced apoptosis by polysaccharides: A review. Int J Biol Macromol 2024; 263:130173. [PMID: 38360238 DOI: 10.1016/j.ijbiomac.2024.130173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Revised: 02/03/2024] [Accepted: 02/12/2024] [Indexed: 02/17/2024]
Abstract
Polysaccharides are biomolecules composed of monosaccharides that are widely found in animals, plants and microorganisms and are of interest for their various health benefits. Cumulative studies have shown that the modulation of radiation-induced apoptosis by polysaccharides can be effective in preventing and treating a wide range of radiation injuries with safety and few side effects. Therefore, this paper summarizes the monosaccharide compositions, molecular weights, and structure-activity relationships of natural polysaccharides that regulate radiation-induced apoptosis, and also reviews the molecular mechanisms by which these polysaccharides modulate radiation-induced apoptosis, primarily focusing on promoting cancer cell apoptosis to enhance radiotherapy efficacy, reducing radiation damage to normal tissues, and inhibiting apoptosis in normal cells. Additionally, the role of gut microbiota in mediating the interaction between polysaccharides and radiation is discussed, providing innovative ideas for various radiation injuries, including hematopoiesis, immunity, and organ damage. This review will contribute to a better understanding of the value of natural polysaccharides in the field of radiation and provide guidance for the development of natural radioprotective agents and radiosensitizers.
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Affiliation(s)
- Beibei Zhang
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning 110122, China; Department of Nutrition, General Hospital of Northern Theater Command, Shenyang, Liaoning 110016, China
| | - Mingyu Zhang
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning 110122, China; Department of Nutrition, General Hospital of Northern Theater Command, Shenyang, Liaoning 110016, China
| | - Jinlong Tian
- College of Food Science, Shenyang Agricultural University, Shenyang, Liaoning 110866, China
| | - Xi Zhang
- Department of Nutrition, General Hospital of Northern Theater Command, Shenyang, Liaoning 110016, China
| | - Dan Zhang
- Department of Nutrition, General Hospital of Northern Theater Command, Shenyang, Liaoning 110016, China
| | - Jiabao Li
- Department of Nutrition, General Hospital of Northern Theater Command, Shenyang, Liaoning 110016, China
| | - Lei Yang
- Department of Environmental Health, School of Public Health, China Medical University, Shenyang, Liaoning 110122, China; Department of Nutrition, General Hospital of Northern Theater Command, Shenyang, Liaoning 110016, China.
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15
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Abstract
Improving human healthspan in our rapidly aging population has never been more imperative. Telomeres, protective "caps" at the ends of linear chromosomes, are essential for maintaining genome stability of eukaryotic genomes. Due to their physical location and the "end-replication problem" first envisioned by Dr. Alexey Olovnikov, telomeres shorten with cell division, the implications of which are remarkably profound. Telomeres are hallmarks and molecular drivers of aging, as well as fundamental integrating components of the cumulative effects of genetic, lifestyle, and environmental factors that erode telomere length over time. Ongoing telomere attrition and the resulting limit to replicative potential imposed by cellular senescence serves a powerful tumor suppressor function, and also underlies aging and a spectrum of age-related degenerative pathologies, including reduced fertility, dementias, cardiovascular disease and cancer. However, very little data exists regarding the extraordinary stressors and exposures associated with long-duration space exploration and eventual habitation of other planets, nor how such missions will influence telomeres, reproduction, health, disease risk, and aging. Here, we briefly review our current understanding, which has advanced significantly in recent years as a result of the NASA Twins Study, the most comprehensive evaluation of human health effects associated with spaceflight ever conducted. Thus, the Twins Study is at the forefront of personalized space medicine approaches for astronauts and sets the stage for subsequent missions. We also extrapolate from current understanding to future missions, highlighting potential biological and biochemical strategies that may enable human survival, and consider the prospect of longevity in the extreme environment of space.
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Affiliation(s)
- Christopher E Mason
- Department of Physiology and Biophysics, Weill Cornell Medicine, New York, NY, USA
- The HRH Prince Alwaleed Bin Talal Bin Abdulaziz Alsaud Institute for Computational Biomedicine and WorldQuant Initiative for Quantitative Prediction, Weill Cornell Medicine, New York, NY, USA
| | - Maria A Sierra
- The HRH Prince Alwaleed Bin Talal Bin Abdulaziz Alsaud Institute for Computational Biomedicine and WorldQuant Initiative for Quantitative Prediction, Weill Cornell Medicine, New York, NY, USA
- Tri-Institutional Computational Biology & Medicine Program, Weill Cornell Medicine, New York, NY, USA
| | - Henry J Feng
- Department of Biological Sciences, Columbia University, New York, NY, USA
- Faculty of Medicine and Health, Sydney Medical School, University of Sydney, Sydney, Australia
| | - Susan M Bailey
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA.
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16
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Lee K, Kim TH, Jo SH, Yu S. Adsorption effects of electron scavengers and inorganic ions on catalysts for catalytic oxidation of sulfamethoxazole in radiation treatment. Chemosphere 2024; 354:141675. [PMID: 38484989 DOI: 10.1016/j.chemosphere.2024.141675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 03/07/2024] [Accepted: 03/08/2024] [Indexed: 03/19/2024]
Abstract
This study aimed to investigate adsorption effects of electron scavengers (H2O2 and S2O82-) on oxidation performance for mineralization of sulfamethoxazole (SMX) in radiation treatment using catalysts (Al2O3, TiO2). Hydrogen peroxide (H2O2, 1 mM) as an electron scavenger showed weak adsorption onto catalysts (0.012 mmol g-1-Al2O3 and 0.004 mmol g-1-TiO2, respectively), leading to an increase in TOC removal efficiency of SMX within the absorbed dose of 30 kGy by 12.3% with Al2O3 and by 8.0% with TiO2. The weak adsorption of H2O2 onto the catalyst allowed it to act as an electron scavenger, promoting indirect decomposition reactions. However, high adsorption of S2O82- (1 mM) onto Al2O3 (0.266 mmol g-1-Al2O3) showed a decrease in TOC removal efficiency of SMX from 76.2% to 30.2% within the absorbed dose of 30 kGy. The high adsorption of S2O82- onto the catalyst inhibited direct decomposition reaction by reducing adsorption of SMX on catalysts. TOC removal efficiency for Al2O3 without electron scavengers in an acidic condition was higher than that in a neutral or alkaline condition. However, TOC removal efficiency for Al2O3 with S2O82- was higher in a neutral condition than in other pH conditions. This indicates that the pH of a solution plays a critical role in the catalytic oxidation performance by determining surface charges of catalysts and yield of reactive radicals produced from water radiolysis. In the radiocatalytic system, H2O2 enhances the oxidation performance of catalysts (Al2O3 and TiO2) over a wide pH range (3-11). Meanwhile, S2O82- is not suitable with Al2O3 in acidic conditions because of its strong adsorption onto Al2O3 in this study.
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Affiliation(s)
- Kang Lee
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea; Korea University, Seoul, 02841, Republic of Korea.
| | - Tae-Hun Kim
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea.
| | - Sang-Hee Jo
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea.
| | - Seungho Yu
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup-si, Jeollabuk-do, 56212, Republic of Korea.
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17
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Lim H, Im M, Seo ES, Cho HW, Ju HY, Yoo KH, Cho SY, Kim JW, Lim DH, Sung KW, Lee JW. Tandem High-Dose Chemotherapy Increases the Risk of Secondary Malignant Neoplasm in Pediatric Solid Tumors. Cancer Res Treat 2024; 56:642-651. [PMID: 37997325 DOI: 10.4143/crt.2023.999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 11/23/2023] [Indexed: 11/25/2023] Open
Abstract
PURPOSE This study aimed to investigate the incidence and risk factors for secondary malignant neoplasms (SMN) in pediatric solid tumors, focusing on the effects of tandem high-dose chemotherapy (HDCT). MATERIALS AND METHODS Patients (aged < 19 years) diagnosed with or treated for pediatric solid tumors between 1994 and 2014 were retrospectively analyzed. The cumulative incidence of SMN was estimated using competing risk methods by considering death as a competing risk. RESULTS A total of 1,435 patients (413 with brain tumors and 1,022 with extracranial solid tumors) were enrolled. Seventy-one patients developed 74 SMNs, with a 10-year and 20-year cumulative incidence of 2.680±0.002% and 10.193±0.024%, respectively. The types of SMN included carcinoma in 28 (37.8%), sarcoma in 24 (32.4%), and hematologic malignancy in 15 (20.3%) cases. Osteosarcoma and thyroid carcinoma were the most frequently diagnosed tumors. Multivariate analysis showed that radiotherapy (RT) > 2, 340 cGy, and tandem HDCT were significant risk factors for SMN development. The SMN types varied according to the primary tumor type; carcinoma was the most frequent SMN in brain tumors and neuroblastoma, whereas hematologic malignancy and sarcomas developed more frequently in patients with sarcoma and retinoblastoma, respectively. CONCLUSION The cumulative incidence of SMN in pediatric patients with solid tumors was considerably high, especially in patients who underwent tandem HDCT or in those who received RT > 2,340 cGy. Therefore, the treatment intensity should be optimized based on individual risk assessment and the long-term follow-up of pediatric cancer survivors.
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Affiliation(s)
- Hana Lim
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Minji Im
- Department of Pediatrics, CHA Gangnam Medical Center, CHA University School of Medicine, Seoul, Korea
| | - Eun Seop Seo
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hee Won Cho
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hee Young Ju
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Keon Hee Yoo
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Sung Yoon Cho
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jong-Won Kim
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Do Hoon Lim
- Department of Radiation Oncology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Ki Woong Sung
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Ji Won Lee
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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18
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Grosinger AJ, Alcorn SR. An Update on the Management of Bone Metastases. Curr Oncol Rep 2024; 26:400-408. [PMID: 38539021 DOI: 10.1007/s11912-024-01515-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/04/2024] [Indexed: 04/17/2024]
Abstract
PURPOSE OF REVIEW Increasing life expectancy among patients with advanced cancer has placed a greater emphasis on optimizing pain control and quality of life. Concurrently, significant advancements in radiotherapy for bone metastases have permitted for dose escalation strategies such as stereotactic radiotherapy. This review aims to provide updated information on the management of bone metastases in light of these developments. RECENT FINDINGS We reviewed recent studies regarding the role and details of external beam radiotherapy for bone metastases, with emphasis on differences by treatment site as well as intention (palliative versus ablative for oligometastases). Conventional palliative radiotherapy remains a mainstay of management. While stereotactic radiotherapy may augment durability of pain relief and even survival time, there are significant questions remaining regarding optimal dosing and patient selection. Radiotherapy for bone metastases continues to evolve, particularly with increasing use of stereotactic radiotherapy. Future studies are needed to clarify optimal dose, fractionation, modality, and patient selection criteria among different radiotherapy approaches.
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Affiliation(s)
- Alexander J Grosinger
- Department of Radiation Oncology, University of Minnesota Medical School, Mail Code 494, 420 Delaware St. SE, Minneapolis, MN, 55455-0110, USA
| | - Sara R Alcorn
- Department of Radiation Oncology, University of Minnesota Medical School, Mail Code 494, 420 Delaware St. SE, Minneapolis, MN, 55455-0110, USA.
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19
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Sanders AP, Swerdlow NJ, Jabbour G, Schermerhorn ML. The effect of Fiber Optic RealShape technology on the reduction of radiation during complex endovascular surgery. J Vasc Surg 2024; 79:954-961. [PMID: 37931886 PMCID: PMC10960673 DOI: 10.1016/j.jvs.2023.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 10/28/2023] [Accepted: 11/01/2023] [Indexed: 11/08/2023]
Abstract
OBJECTIVE Despite the advantages that fenestrated endovascular aortic repair has over open repair, it is accompanied by the consequence of radiation exposure, which can result in long-term complications for both the patient and surgical staff. Fiber Optic RealShape (FORS) technology is a novel advancement that uses emitted light from a fiber optic wire and enables the surgeon to cannulate vessels in real time without live fluoroscopy. This technology has been implemented at select centers to study its effectiveness for cannulation of target vessels and its impact on procedural radiation. METHODS We collected prospective data on physician-modified endograft (PMEG) cases before and after the introduction of FORS technology. FORS PMEGs were matched with up to three conventional fluoroscopy cases by number of target vessels, inclusion of a bifurcated device below, aneurysm extent, and patient body mass index. The procedural radiation parameters were compared between these cohorts. Within the FORS cohort, we analyzed the rate of successful target vessel cannulation for all cases done with this technology (including cases other than PMEGs), and we compared the radiation between the cannulations using only FORS with those that abandoned FORS for conventional fluoroscopy. RESULTS Nineteen FORS PMEGs were able to be matched to 45 conventional fluoroscopy cases. Procedures that used FORS technology had significantly reduced total air kerma (527 mGy vs 964 mGy), dose area product (121 Gy∗cm2 vs 186 Gy∗cm2), fluoroscopy dose (72.1 Gy∗cm2 vs 132.5 Gy∗cm2), and fluoroscopy time (45 minutes vs 72 minutes). There was no difference in procedure length, total contrast, or digital subtraction angiography. Within FORS cases, 66% of cannulations were completed using only FORS. Cannulations using only FORS had significant reduction of navigation air kerma (5.0 mGy vs 26.5 mGy), dose area product (1.2 Gy∗cm2 vs 5.1 Gy∗cm2), and fluoroscopy time (0.6 minutes vs 2.3 minutes) compared with cannulations abandoning FORS for conventional fluoroscopy. CONCLUSIONS This study demonstrates the advantages of FORS for total procedural radiation as well as during individual cannulation tasks. The implementation of FORS for target vessel catheterization has the potential to decrease the total degree of radiation exposure for the patient and surgical staff during complex endovascular aortic surgeries.
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Affiliation(s)
- Andrew P Sanders
- Department of Surgery, Division of Vascular and Endovascular Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Nicholas J Swerdlow
- Department of Surgery, Division of Vascular and Endovascular Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA; Department of Surgery, Division of Vascular and Endovascular Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Gabriel Jabbour
- Department of Surgery, Division of Vascular and Endovascular Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Marc L Schermerhorn
- Department of Surgery, Division of Vascular and Endovascular Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA.
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20
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Klaassen J, Hazenberg CEVB, Bloemert-Tuin T, Wulms SCA, Teraa M, van Herwaarden JA. Editor's Choice - Radiation Dose Reduction During Contralateral Limb Cannulation Using Fiber Optic RealShape Technology in Endovascular Aneurysm Repair. Eur J Vasc Endovasc Surg 2024; 67:594-600. [PMID: 37925100 DOI: 10.1016/j.ejvs.2023.10.041] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 10/13/2023] [Accepted: 10/31/2023] [Indexed: 11/06/2023]
Abstract
OBJECTIVE The increasing number of endovascular procedures has resulted in an increasing radiation burden, particularly for the treatment team. Fiber Optic RealShape (FORS) technology uses laser light instead of fluoroscopy to visualise the endovascular guidewire and catheters. These devices can be used during the navigational part of procedures, such as cannulation of the contralateral limb (CL) in endovascular aneurysm repair (EVAR). The aim of this study was to describe the effect of using FORS on radiation dose during CL cannulation in standard EVAR. METHODS This was a non-randomised, retrospective comparison study of prospectively collected, single centre data from FORS guided EVAR compared with a conventional fluoroscopy only guided EVAR cohort. A total of 27 FORS guided cases were matched 1:1 based on sex, age, and body mass index (BMI) with 27 regular (fluoroscopy only) EVARs. This study primarily focused on (1) technical success of FORS and (2) navigation time and radiation dose (cumulative air kerma [CAK], air kerma area product [KAP], and fluoroscopy time [FT]) during cannulation of the CL. In addition, overall procedure time and radiation dose of the complete EVAR procedure were studied. RESULTS In 22 (81%) of the 27 FORS guided cases the CL was successfully cannulated using FORS. All radiation dose parameters were significantly lower in the FORS group (CAK, p < .001; KAP, p = .009; and FT, p < .001) for an equal navigation time (p = .95). No significant differences were found when comparing outcomes of the complete procedure. CONCLUSION Use of FORS technology significantly reduces radiation doses during cannulation of the CL in standard EVAR.
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Affiliation(s)
- Jurre Klaassen
- Department of Vascular Surgery, University Medical Centre Utrecht, Utrecht, the Netherlands.
| | | | - Trijntje Bloemert-Tuin
- Department of Vascular Surgery, University Medical Centre Utrecht, Utrecht, the Netherlands
| | - Suzan C A Wulms
- Department of Vascular Surgery, University Medical Centre Utrecht, Utrecht, the Netherlands; Technical Medicine, University of Twente, Enschede, the Netherlands
| | - Martin Teraa
- Department of Vascular Surgery, University Medical Centre Utrecht, Utrecht, the Netherlands
| | - Joost A van Herwaarden
- Department of Vascular Surgery, University Medical Centre Utrecht, Utrecht, the Netherlands
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21
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Wang S, Hu J, Wang J. Enhanced uranium removal from aqueous solution by core-shell Fe 0@Fe 3O 4: Insight into the synergistic effect of Fe 0 and Fe 3O 4. Chemosphere 2024; 354:141730. [PMID: 38492682 DOI: 10.1016/j.chemosphere.2024.141730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 03/08/2024] [Accepted: 03/14/2024] [Indexed: 03/18/2024]
Abstract
In this study, Fe0@Fe3O4 was synthesized and used to remove U(VI) from groundwater. Different experimental conditions and cycling experiments were used to investigate the performance of Fe0@Fe3O4 in the U(VI) removal, and the XRD, TEM, XPS and XANES techniques were employed to characterize the Fe0@Fe3O4. The results showed that the U(VI) removal efficiency of Fe0@Fe3O4 was 48.5 mg/g that was higher than the sum of removal efficiency of Fe0 and Fe3O4. The uranium on the surface of Fe0@Fe3O4 mainly existed as U(IV), followed by U(VI) and U(V). The Fe0 content decreased after reaction, while the Fe3O4 content increased. Based on the results of experiments and characterization, the enhanced removal efficiency of Fe0@Fe3O4 was attributed to the synergistic effect of Fe0 and Fe3O4 in which Fe3O4 accelerated the Fe0 corrosion that promoted the progressively formation of Fe(II) that promoted the reduction of adsorbed U(VI) to U(IV) and incorporated U(VI) to U(V). The performance of Fe0@Fe3O4 at near-neutrality condition was better than at acidic and alkalic conditions. The chloride ions, sulfate ions and nitrate ions showed minor effect on the Fe0@Fe3O4 performance, while carbonate ions exhibited significant inhibition. The metal cations showed different effect on the Fe0@Fe3O4 performance. The removal efficiency of Fe0@Fe3O4 decreased with the number of cycling experiment. Ionizing radiation could regenerate the used Fe0@Fe3O4. This study provides insight into the U(VI) removal by Fe0@Fe3O4 in aqueous solution.
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Affiliation(s)
- Shizong Wang
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing, 100084, PR China
| | - Jun Hu
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing, 100084, PR China
| | - Jianlong Wang
- Laboratory of Environmental Technology, INET, Tsinghua University, Beijing, 100084, PR China; Beijing Key Laboratory of Radioactive Wastes Treatment, Tsinghua University, Beijing, 100084, PR China.
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22
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Fotopoulou C, Eriksson AG, Planchamp F, Morice P, Taylor A, Sturdza A, Florin Coza O, Halaska MJ, Martinelli F, Armbrust R, Chargari C. European Society of Gynaecological Oncology expanded quality indicators and accreditation for cervical cancer management. Int J Gynecol Cancer 2024; 34:480-489. [PMID: 38395448 DOI: 10.1136/ijgc-2024-005293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2024] Open
Affiliation(s)
| | - Ane Gerda Eriksson
- Department of Gynecologic Oncology, Norwegian Radium Hospital, Oslo, Norway
- The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
| | | | - Philippe Morice
- Surgery, Gustave Roussy, Villejuif, Île-de-France, France
- Paris-South University/Paris Saclay, Paris, Île-de-France, France
| | | | - Alina Sturdza
- Department of Radiation Oncology, Comprehensive Cancer Center, Christian Doppler Laboratory for Medical Radiation Research for Radiation Oncology, Medical University of Vienna, Vienna, Austria
| | - Ovidiu Florin Coza
- Iuliu Hagieganu University of Medicine and Pharmacy Faculty of Medicine, Cluj Napoca, Romania
- Oncology Institute "Prof. Dr.I.Chiricuta", Cluj Napoca, Romania
| | - Michael J Halaska
- Dept. of Obstetrics and Gynaecology, 3rd Medical Faculty, Charles University, Prague, Czech Republic
| | | | - Robert Armbrust
- Dept. of Gynecology, Charite University Hospital Berlin, Berlin, Germany
| | - Cyrus Chargari
- Hôpital Universitaire Pitié Salpêtrière, Paris, Île-de-France, France
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Surís X, Rodríguez C, Llargués E, Pueyo-Sánchez MJ, Larrosa M. Trend and Seasonality of Hip Fractures in Catalonia, Spain: Exploring the Influence of Climate. Calcif Tissue Int 2024; 114:326-339. [PMID: 38340169 PMCID: PMC10957628 DOI: 10.1007/s00223-024-01182-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 12/30/2023] [Indexed: 02/12/2024]
Abstract
To describe the secular trend and seasonality of the incidence of hip fracture (HF) and its relationship with climatic variables during the period 2010-2019 in Catalonia in people aged ≥ 65 years. The results were analyzed by sex, age groups (65-74, 75-84, and ≥ 85), and types of fracture (extracapsular and intracapsular). Data on sex, age, type of fracture, year, and month of hospitalization of patients admitted with a diagnosis of HF between January 1, 2010 and December 31, 2019 were collected. Crude and standardized HF incidence (HFi) rates were obtained. Data on the monthly mean of climatological variables (temperature, insolation, icy days, rain, relative humidity, atmospheric pressure, and wind force) were obtained from the network of meteorological stations in Catalonia. Time series analytical statistics were used to identify trends and seasonality. Linear regression and a seasonal autoregressive integrated moving average (ARIMA) were used to analyze the relationship of each climatic parameter with fracture rates. In addition, generalized additive models were used to ascertain the best predictive model. The total number of HF episodes was 90,149 (74.1% in women and 25.9% in men). The total number of HFs increased by 6.4% between 2010 and 2019. The median age (SD) was 84.5 (7.14) and 54% of patients were ≥ 85 years of age. Extracapsular fractures were the most common (55%). The standardized incidence rates decreased from 728.1/100,000 (95% CI 738.6-769.3) to 624.5/100,000 (95% CI 648.7-677.0), which represents a decrease of 14.2% (p < 0.05). The decline was greater at older ages. There were seasonal variations, with higher incidences in autumn (27.2%) and winter (25.7%) and lower rates in summer (23.5%) and spring (23.6%). Seasonality was more pronounced in elderly people and men. In the bivariate regression analysis, high temperatures and greater insolation were negatively associated with the HF rate, while the number of icy days, rainy days, and high relative humidity were associated with a higher incidence of fractures in all age groups and sexes. In the regression analysis using the seasonal ARIMA model, only insolation had a consistently significant association with overall HFi, after adjusting by trend and other climatic parameters. While the global number of HFs grew in Catalonia due to increases in the elderly population, the standardized HF rate decreased during the years 2010-2019. There was a seasonal trend, with predominance in the cold months and correlations with climatic parameters, especially with insolation.
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Affiliation(s)
- Xavier Surís
- Master Plan of Musculoskeletal Diseases, Department of Health, C/Travessera de les Corts, 131-159, 08028, Barcelona, Catalonia, Spain.
- Rheumatology Department, Hospital General de Granollers, Granollers, Spain.
- School of Medicine and Health Sciences, Universitat Internacional de Catalunya, Sant Cugat del Valles, Spain.
| | - Clara Rodríguez
- Fundació Institut Universitari per a la Recerca a l'Atenció Primària de Salut Jordi Gol i Gurina (IDIAPJGol), Barcelona, Spain
- Facultat de Biologia, Universitat de Barcelona, Barcelona, Spain
| | - Esteve Llargués
- School of Medicine and Health Sciences, Universitat Internacional de Catalunya, Sant Cugat del Valles, Spain
- Internal Medicine Department, Hospital General de Granollers, Granollers, Spain
| | - Maria J Pueyo-Sánchez
- Assistance and Participation Area. La Unió, Association of Health and Social Entities, Barcelona, Spain
| | - Marta Larrosa
- Master Plan of Musculoskeletal Diseases, Department of Health, C/Travessera de les Corts, 131-159, 08028, Barcelona, Catalonia, Spain
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Lee C, Yoon SY, Hwang JH, Park SH, Kwon M, Yoon C, Lee K, Hahm MH, Park KS. External border zone may be correlated with radiation necrosis after radiosurgery in metastatic brain tumor. World Neurosurg 2024:S1878-8750(24)00532-1. [PMID: 38561029 DOI: 10.1016/j.wneu.2024.03.146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Accepted: 03/25/2024] [Indexed: 04/04/2024]
Abstract
BACKGROUND Radiation necrosis (RN) after stereotactic radiosurgery (SRS) in brain metastases has been extensively evaluated, and RN is correlated with various risk factors. However, no study comprehensively analyzed the correlation between RN and the border zones of the brain that are vulnerable to ischemia. We hypothesized that patients with tumors in the border zone are at high risk of RN. Hence, the current study aimed to assess the correlation between border zone lesions and RN, with consideration of other predetermined factors. METHODS This retrospective study included 117 patients with 290 lesions who underwent Gamma Knife® stereotactic radiosurgery (SRS). Radiological and clinical analyses were performed to identify factors possibly correlated with RN. Notably, the lesion location was classified into two groups (border zone and non-border zone) based on the blood supply. RESULTS In total, 22 (18.8%) patients with 22 (7.5%) lesions developed RN. Univariate analysis revealed a significant correlation between RN and external border zone lesions, second course of SRS administered at the same site of the previous SRS, prescribed dose, and tumor volume. Multivariate analysis showed that border zone lesions, second course of SRS at the same site of the previous SRS, and tumor volume were significantly correlated with RN. CONCLUSIONS Patients with tumors in the border zone are at high risk of RN. The potential risks of RN can be attributed hypothetically to hypoperfusion. Hence, the association between RN and border zone lesions seems reasonable.
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Affiliation(s)
- Chaejin Lee
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Sang-Youl Yoon
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Jeong-Hyun Hwang
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Seong-Hyun Park
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Minjae Kwon
- School of Medicine, Kyungpook National University, Daegu, Korea
| | - Chaemin Yoon
- School of Medicine, Kyungpook National University, Daegu, Korea
| | - Kyungyoung Lee
- School of Medicine, Kyungpook National University, Daegu, Korea
| | | | - Ki-Su Park
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu, Korea.
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25
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Liu M, Wang X, Wang Y. Interactions between aerosols and surface ozone in arid and semi-arid regions of China. Environ Monit Assess 2024; 196:390. [PMID: 38517576 DOI: 10.1007/s10661-024-12555-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Accepted: 03/16/2024] [Indexed: 03/24/2024]
Abstract
Atmospheric aerosols affect surface ozone concentrations by influencing radiation, but the mechanism and dominant factors are unclear. Therefore, this paper analyses the changes in aerosol-radiative-surface ozone in China's arid and semi-arid regions with the help of the Atmospheric Radiative Transfer (SBDART) model. The results suggest that Aerosol Optical Depth (AOD) and coarse Particulate Matter (PM10) have the same trend, with high values in spring and winter and low values in summer and autumn. Surface ozone is high in spring and summer and low in autumn and winter. Surface ozone is higher in spring and summer and lower in autumn and winter. In winter, mainly secondary pollutants are dominated by high pollution levels. In the rest of the seasons, a mixture of dust, motor vehicle exhaust, and soot is dominated by low pollution levels. Surface ozone is positively correlated with fine particles and negatively correlated with coarse particles. Temperature is positively correlated with surface ozone in all seasons and negatively correlated with PM10 in summer, autumn, and winter. Precipitation negatively correlates with PM10 each season and surface ozone in winter and spring. Analysis of surface ozone and PM10 sources in the more polluted city of Hohhot based on the back-line trajectory model showed that airflow trajectories mainly transported surface ozone and PM10 pollution from northwestern Inner Mongolia and western Mongolia. During dusty solid weather, the decrease in radiation reaching the Earth's surface and the cooling effect of aerosols lead to lower temperatures, which slows down the rate of chemical reactions of precursors of surface ozone, resulting in lower ozone concentrations at the surface. This study can provide a theoretical reference for aerosol and surface ozone control in arid and semi-arid areas of China.
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Affiliation(s)
- Minxia Liu
- College of Geography and Environmental Science, Northwest Normal University, Lanzhou, 730070, China.
| | - Xiaowen Wang
- College of Geography and Environmental Science, Northwest Normal University, Lanzhou, 730070, China
| | - Yang Wang
- College of Geography and Environmental Science, Northwest Normal University, Lanzhou, 730070, China
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26
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Huang K, Yan C, Abdelghany L, Zhang X, Jingu K, Li TS. Nicaraven attenuates the acquired radioresistance of established tumors in mouse models via PARP inhibition. Mol Cell Biochem 2024:10.1007/s11010-024-04958-6. [PMID: 38466467 DOI: 10.1007/s11010-024-04958-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 02/03/2024] [Indexed: 03/13/2024]
Abstract
Nicaraven has been reported to inhibit the activity of poly (ADP-ribose) polymerase (PARP). In this study, we investigated the probable ability of nicaraven to attenuate cancer radioresistance during fractionated radiotherapy. Tumor models were established in C57BL/6 mice and BALB/c nude mice by subcutaneous injection of Lewis mouse lung carcinoma cancer cells and A549 human lung cancer cells, respectively. When the tumors had grown to approximately 100 mm3, we initiated fractionated radiotherapy. Nicaraven or saline was administered immediately after each irradiation exposure. Compared to saline treatment, nicaraven administration significantly induced gamma-H2AX foci formation and cell apoptosis in tumors at 1 or 3 days after an additional challenge exposure to 10 Gy and inhibited tumor growth during the short-term follow-up period, suggesting increased radiosensitivity of cancer cells. Moreover, the expression of PARP in tumor tissue was decreased by nicaraven administration. Our data suggest that nicaraven likely attenuates the acquired radioresistance of cancers through PARP inhibition.
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Affiliation(s)
- Kai Huang
- Department of Stem Cell Biology, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan
- Department of Stem Cell Biology, Nagasaki University Graduate School of Biomedical Sciences, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan
| | - Chen Yan
- Department of Stem Cell Biology, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan
| | - Lina Abdelghany
- Department of Stem Cell Biology, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan
- Department of Stem Cell Biology, Nagasaki University Graduate School of Biomedical Sciences, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan
| | - Xu Zhang
- Department of Stem Cell Biology, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan
- Department of Stem Cell Biology, Nagasaki University Graduate School of Biomedical Sciences, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan
| | - Keiichi Jingu
- Department of Radiation Oncology, Graduate School of Medicine, Tohoku University, 2-1 Seiryomachi, Aoba Ward, Sendai, Miyagi, 980-0872, Japan
| | - Tao-Sheng Li
- Department of Stem Cell Biology, Atomic Bomb Disease Institute, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan.
- Department of Stem Cell Biology, Nagasaki University Graduate School of Biomedical Sciences, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan.
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27
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Shen Y, Connolly E, Aiello M, Zhou C, Chappa P, Song H, Tippitak P, Clark T, Cardenas M, Prokhnevska N, Mariniello A, Pagadala MS, Dhere VR, Rafiq S, Kesarwala AH, Orthwein A, Thomas SN, Khan MK, Brandon Dixon J, Lesinski GB, Lowe MC, Kissick H, Yu DS, Paulos CM, Schmitt NC, Buchwald ZS. Radiation and anti-PD-L1 synergize by stimulating a stem-like T cell population in the tumor-draining lymph node. Res Sq 2024:rs.3.rs-3921977. [PMID: 38496632 PMCID: PMC10942568 DOI: 10.21203/rs.3.rs-3921977/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2024]
Abstract
Radiotherapy (RT) and anti-PD-L1 synergize to enhance local and distant (abscopal) tumor control. However, clinical results in humans have been variable. With the goal of improving clinical outcomes, we investigated the underlying synergistic mechanism focusing on a CD8+ PD-1+ Tcf-1+ stem-like T cell subset in the tumor-draining lymph node (TdLN). Using murine melanoma models, we found that RT + anti-PD-L1 induces a novel differentiation program in the TdLN stem-like population which leads to their expansion and differentiation into effector cells within the tumor. Our data indicate that optimal synergy between RT + anti-PD-L1 is dependent on the TdLN stem-like T cell population as either blockade of TdLN egress or specific stem-like T cell depletion reduced tumor control. Together, these data demonstrate a multistep stimulation of stem-like T cells following combination therapy which is initiated in the TdLN and completed in the tumor.
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Affiliation(s)
- Yang Shen
- Department of Radiation Oncology and Winship Cancer Institute, Emory University, Atlanta, GA, USA
- These authors contributed equally
| | - Erin Connolly
- Bioinformatics Graduate Program, Georgia Institute of Technology, Atlanta, GA, USA
- These authors contributed equally
| | - Meili Aiello
- Department of Radiation Oncology and Winship Cancer Institute, Emory University, Atlanta, GA, USA
| | - Chengjing Zhou
- Department of Radiation Oncology and Winship Cancer Institute, Emory University, Atlanta, GA, USA
| | - Prasanthi Chappa
- Department of Radiation Oncology and Winship Cancer Institute, Emory University, Atlanta, GA, USA
| | - Haorui Song
- Department of Radiation Oncology and Winship Cancer Institute, Emory University, Atlanta, GA, USA
| | - Patan Tippitak
- Department of Radiation Oncology and Winship Cancer Institute, Emory University, Atlanta, GA, USA
| | - Tarralyn Clark
- Department of Radiation Oncology and Winship Cancer Institute, Emory University, Atlanta, GA, USA
| | - Maria Cardenas
- Department of Urology and Winship Cancer Institute, Emory University, Atlanta, GA, USA
| | - Nataliya Prokhnevska
- Marc and Jennifer Lipschultz Precision Immunology Institute, Icahn School of Medicine at Mount Sinai (ICMMS), New York City, NY, USA
| | - Annapaola Mariniello
- Department of Pathology and Immunology, University of Geneva, Geneva, Switzerland
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA, USA
| | - Meghana S. Pagadala
- Medical Scientist Training Program, University of California San Diego, La Jolla, CA USA
| | - Vishal R. Dhere
- Department of Radiation Oncology and Winship Cancer Institute, Emory University, Atlanta, GA, USA
| | - Sarwish Rafiq
- Department of Hematology and Medical Oncology and Winship Cancer Institute, Emory University, Atlanta, GA, USA
| | - Aparna H. Kesarwala
- Department of Radiation Oncology and Winship Cancer Institute, Emory University, Atlanta, GA, USA
| | - Alexandre Orthwein
- Department of Radiation Oncology and Winship Cancer Institute, Emory University, Atlanta, GA, USA
| | - Susan N. Thomas
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - Mohammad K. Khan
- Department of Radiation Oncology and Winship Cancer Institute, Emory University, Atlanta, GA, USA
| | - J. Brandon Dixon
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
- Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA, USA
| | - Gregory B. Lesinski
- Department of Hematology and Medical Oncology and Winship Cancer Institute, Emory University, Atlanta, GA, USA
| | - Michael C. Lowe
- Department of Surgery and Winship Cancer Institute of Emory University, Atlanta, GA, USA
| | - Haydn Kissick
- Department of Urology and Winship Cancer Institute, Emory University, Atlanta, GA, USA
| | - David S. Yu
- Department of Radiation Oncology and Winship Cancer Institute, Emory University, Atlanta, GA, USA
| | - Chrystal M. Paulos
- Department of Surgery and Winship Cancer Institute of Emory University, Atlanta, GA, USA
| | - Nicole C. Schmitt
- Department of Otolaryngology - Head and Neck Surgery and Winship Cancer Institute, Emory University, Atlanta, GA, USA
| | - Zachary S. Buchwald
- Department of Radiation Oncology and Winship Cancer Institute, Emory University, Atlanta, GA, USA
- Lead contact
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Ahmed SF, Bakr MA. Will Nigella sativa oil protect parotid glands of rats against cranium gamma ir radiation? Histological and immunohistochemical evaluation. BMC Complement Med Ther 2024; 24:111. [PMID: 38448931 PMCID: PMC10916243 DOI: 10.1186/s12906-024-04410-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 02/21/2024] [Indexed: 03/08/2024] Open
Abstract
BACKGROUND Radiation plays an essential role in treating malignancies. Radiation exposure of salivary glands often results in permanent loss of their functions; therefore, their protection against radiation is crucial. Nigella sativa oil (NSO) is a useful antioxidant against free radicals. The purpose of this study was to investigate the radio-protective effect of NSO on oxidative injury of parotid glands of gamma-irradiated rats. METHODS Twenty-eight male albino rats were divided into four groups (n = 7): Group 1: Neither NSO nor radiation, Group 2: Rats received NSO 400 mg/kg, Group 3: Rats received 15 Gy cranium gamma irradiation & Group 4: Rats received gamma irradiation and NSO. Rats were sacrificed two weeks after the last NSO dose. Histological sections of parotid glands were stained with H&E, Masson's trichrome and anti-TGF-β antibodies. Area percentage of Masson's trichrome and TGF-β expression was morphometrically examined. RESULTS Parotid glands of control and NSO groups revealed normal morphology. Gamma-irradiated glands showed loss of normal acinar architecture and slight acinar shrinkage. NSO treatment of gamma-irradiated glands preserved acinar outline and architecture. Masson's trichrome stained samples revealed trace amounts of collagen fibers in control and NSO groups, and excessive amounts of collagen fibers in gamma-irradiated group, in addition to few collagen fibers for gamma-irradiated glands treated with NSO. Additionally, control and NSO groups showed negative TGF-β expression. Gamma-irradiated group showed high TGF-β expression, while NSO treated gamma-irradiated group showed moderate TGF-β expression. CONCLUSIONS Gamma-irradiation adversely affected parotid glands, and in contrast, NSO seemed to positively counteract this adverse effect.
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Affiliation(s)
- Salwa Farid Ahmed
- Health Radiation Research Dept., National Center for Radiation Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt.
| | - Mostafa A Bakr
- Health Radiation Research Dept., National Center for Radiation Research and Technology, Egyptian Atomic Energy Authority, Cairo, Egypt
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29
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Ruan F, Fang H, Chen F, Xie X, He M, Wang R, Lu J, Wu Z, Liu J, Guo F, Sun W, Shao D. Leveraging Radiation-triggered Metal Prodrug Activation Through Nanosurface Energy Transfer for Directed Radio-chemo-immunotherapy. Angew Chem Int Ed Engl 2024; 63:e202317943. [PMID: 38078895 DOI: 10.1002/anie.202317943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Indexed: 12/30/2023]
Abstract
Metal-based drugs currently dominate the field of chemotherapeutic agents; however, achieving the controlled activation of metal prodrugs remains a substantial challenge. Here, we propose a universal strategy for the radiation-triggered activation of metal prodrugs via nanosurface energy transfer (NSET). The core-shell nanoplatform (Ru-GNC) is composed of gold nanoclusters (GNC) and ruthenium (Ru)-containing organic-inorganic hybrid coatings. Upon X-ray irradiation, chemotherapeutic Ru (II) complexes were released in a controlled manner through a unique NSET process involving the transfer of photoelectron energy from the radiation-excited Ru-GNCs to the Ru-containing hybrid layer. In contrast to the traditional radiation-triggered activation of prodrugs, such an NSET-based system ensures that the reactive species in the tumor microenvironment are present in sufficient quantity and are not easily quenched. Additionally, ultrasmall Ru-GNCs preferably target mitochondria and profoundly disrupt the respiratory chain upon irradiation, leading to radiosensitization by generating abundant reactive oxygen species. Consequently, Ru-GNC-directed radiochemotherapy induces immunogenic cell death, resulting in significant therapeutic outcomes when combined with the programmed cell death-ligand 1 (PD-L1) checkpoint blockade. This NSET strategy represents a breakthrough in designing radiation-triggered nanoplatforms for metal-prodrug-mediated cancer treatment in an efficient and controllable manner.
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Affiliation(s)
- Feixia Ruan
- School of Medicine, South China University of Technology, Guangzhou, Guangdong, 510006, China
| | - Hui Fang
- School of Biomedical Sciences and Engineering, Guangzhou International Campus, South China University of Technology, Guangzhou, Guangdong, 511442, China
| | - Fangman Chen
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, Guangdong, 510006, China
| | - Xiaochun Xie
- School of Medicine, South China University of Technology, Guangzhou, Guangdong, 510006, China
| | - Maomao He
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Ran Wang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Junna Lu
- School of Biomedical Sciences and Engineering, Guangzhou International Campus, South China University of Technology, Guangzhou, Guangdong, 511442, China
| | - Ziping Wu
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, Guangdong, 510006, China
| | - Jiali Liu
- School of Biomedical Sciences and Engineering, Guangzhou International Campus, South China University of Technology, Guangzhou, Guangdong, 511442, China
| | - Feng Guo
- School of Biomedical Sciences and Engineering, Guangzhou International Campus, South China University of Technology, Guangzhou, Guangdong, 511442, China
| | - Wen Sun
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Dan Shao
- School of Medicine, South China University of Technology, Guangzhou, Guangdong, 510006, China
- School of Biomedical Sciences and Engineering, Guangzhou International Campus, South China University of Technology, Guangzhou, Guangdong, 511442, China
- National Engineering Research Center for Tissue Restoration and Reconstruction, South China University of Technology, Guangzhou, Guangdong, 510006, China
- Guangdong Provincial Key Laboratory of Biomedical Engineering, Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education, South China University of Technology, Guangzhou, 510006, China
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Keogh RJ, Harvey H, Brady C, Hassett E, Costelloe SJ, O'Sullivan MJ, Twomey M, O'Leary MJ, Cahill MR, O'Riordan A, Joyce CM, Moloney G, Flavin A, M Bambury R, Murray D, Bennett K, Mullooly M, O'Reilly S. Dealing with digital paralysis: Surviving a cyberattack in a National Cancer center. J Cancer Policy 2024; 39:100466. [PMID: 38176467 DOI: 10.1016/j.jcpo.2023.100466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2023] [Revised: 11/26/2023] [Accepted: 12/21/2023] [Indexed: 01/06/2024]
Abstract
INTRODUCTION Cyberattacks represent a growing threat for healthcare delivery globally. We assess the impact and implications of a cyberattack on a cancer center in Ireland. METHODS On May 14th 2021 (day 0) Cork University Hospital (CUH) Cancer Center was involved in the first national healthcare ransomware attack in Ireland. Contingency plans were only present in laboratory services who had previously experienced information technology (IT) failures. No hospital cyberattack emergency plan was in place. Departmental logs of activity for 120 days after the attack were reviewed and compared with historical activity records. Daily sample deficits (routine daily number of samples analyzed - number of samples analyzed during cyberattack) were calculated. Categorical variables are reported as median and range. Qualitative data were collected via reflective essays and interviews with key stakeholders from affected departments in CUH. RESULTS On day 0, all IT systems were shut down. Radiotherapy (RT) treatment and cancer surgeries stopped, outpatient activity fell by 50%. hematology, biochemistry and radiology capacity fell by 90% (daily sample deficit (DSD) 2700 samples), 75% (DSD 2250 samples), and 90% (100% mammography/PET scan) respectively. Histopathology reporting times doubled (7 to 15 days). Radiotherapy (RT) was interrupted for 113 patients in CUH. The median treatment gap duration was six days for category 1 patients and 10 for the remaining patients. Partner organizations paused all IT links with CUH. Outsourcing of radiology and radiotherapy commenced, alternative communication networks and national conference calls in RT and Clinical Trials were established. By day 28 Email communication was restored. By day 210 reporting and data storage backlogs were cleared and over 2000 computers were checked/replaced. CONCLUSION Cyberattacks have rapid, profound and protracted impacts. While laboratory and diagnostic deficits were readily quantified, the impact of disrupted/delayed care on patient outcomes is less readily quantifiable. Cyberawareness and cyberattack plans need to be embedded in healthcare. POLICY SUMMARY Cyberattacks pose significant challenges for healthcare systems, impacting patient care, clinical outcomes, and staff wellbeing. This study provides a comprehensive review of the impact of the Conti ransomware attack on cancer services in Cork University Hospital (CUH), the first cyberattack on a national health service. Our study highlights the widespread disruption caused by a cyberattack including shutdown of information technology (IT) services, marked reduction in outpatient activity, temporary cessation of essential services such as radiation therapy. We provide a framework for other institutions for mitigating the impact of a cyberattack, underscoring the need for a cyberpreparedness plan similar to those made for natural disasters and the profound legacy of a cyberattack on patient care.
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Affiliation(s)
- Rachel J Keogh
- Department of Medical Oncology, Cork University Hospital, Wilton, Cork, Ireland; Cancer Research @UCC, College of Medicine and Health, University College Cork, Ireland.
| | - Harry Harvey
- Department of Medical Oncology, Cork University Hospital, Wilton, Cork, Ireland
| | - Claire Brady
- Department of Medical Oncology, Cork University Hospital, Wilton, Cork, Ireland; Cancer Research @UCC, College of Medicine and Health, University College Cork, Ireland; Cancer Trials Cork, Cork University Hospital, Ireland
| | - Edel Hassett
- Cancer Research @UCC, College of Medicine and Health, University College Cork, Ireland; Cancer Trials Cork, Cork University Hospital, Ireland
| | - Seán J Costelloe
- Department of Clinical Biochemistry, Cork University Hospital, Wilton, Cork, Ireland
| | - Martin J O'Sullivan
- Department of Breast Surgery, Cork University Hospital, Ireland; University College Cork, College Road, University College Cork, Ireland
| | - Maria Twomey
- Department of Radiology, Cork University Hospital, Ireland
| | - Mary Jane O'Leary
- Palliative Medicine, Marymount University Hospital and Hospice, Cork, Ireland; Palliative Medicine, Cork University Hospital, Ireland
| | - Mary R Cahill
- Department of Haematology, Cork University Hospital, Ireland
| | | | - Caroline M Joyce
- Department of Clinical Biochemistry, Cork University Hospital, Wilton, Cork, Ireland; INFANT Centre, University College Cork, Ireland; Pregnancy Loss Research Group, Department of Obstetrics & Gynaecology, University College Cork, University College Cork, Ireland
| | - Ger Moloney
- Information and Communication Technology (ICT) Department, Cork University Hospital, Ireland
| | - Aileen Flavin
- Bon Secours Radiotherapy Cork in Partnership with UPMC Hillman Cancer Centre, Cork, Ireland
| | - Richard M Bambury
- Department of Medical Oncology, Cork University Hospital, Wilton, Cork, Ireland; Cancer Research @UCC, College of Medicine and Health, University College Cork, Ireland; Cancer Trials Cork, Cork University Hospital, Ireland; Cancer Research @UCC, University College Cork, Cork, Ireland
| | | | - Kathleen Bennett
- School of Population Health, RCSI University of Medicine and Health Sciences Dublin, Ireland
| | - Maeve Mullooly
- School of Population Health, RCSI University of Medicine and Health Sciences Dublin, Ireland
| | - Seamus O'Reilly
- Department of Medical Oncology, Cork University Hospital, Wilton, Cork, Ireland; Cancer Research @UCC, College of Medicine and Health, University College Cork, Ireland; Cancer Trials Cork, Cork University Hospital, Ireland; Cancer Research @UCC, University College Cork, Cork, Ireland
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Maslyuk VT, Zavilopulo AN, Svatiuk NI, Bandurin YA. Peculiarities of Glucose Molecules Destruction under Ir radiation at the M-30 Microtron (12.5 MeV): Mass Spectrometric Studies. Cell Biochem Biophys 2024; 82:203-211. [PMID: 37966623 DOI: 10.1007/s12013-023-01195-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 10/27/2023] [Indexed: 11/16/2023]
Abstract
The method of mass spectrometric studies was used to study the fragmentation of glucose in the gas phase upon collision with low-energy electrons (20-70 eV) before and after irradiation at the M-30 microtron (12.5 MeV) with doses of 14 and 164 kGy. The dose dependence of the transformation of glucose mass spectra was established. The results indicate the dominance in mass spectra of symmetric fission channels of the molecule itself and its fragments formed under the action of M-30 microtron radiation. The same ways of fragmentation of glucose one can expect under chemical, thermal, and biological processes at the cellular level. The dominant channels of fragmentizing the glucose molecule without and considering its radiation treatment are explained within the framework of the method of structural combinations. The obtained results are essential for understanding the processes of cellular biochemistry and biophysics involving glucose, the hierarchy of its fragmentation channels under the influence of terrestrial radiation factors, and metabolic processes.
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Affiliation(s)
- V T Maslyuk
- Institute of Electron Physics, National Academy of Sciences, Universitetska 21, Uzhhorod, 88017, Zakarpattia, Ukraine.
| | - A N Zavilopulo
- Institute of Electron Physics, National Academy of Sciences, Universitetska 21, Uzhhorod, 88017, Zakarpattia, Ukraine
| | - N I Svatiuk
- Institute of Electron Physics, National Academy of Sciences, Universitetska 21, Uzhhorod, 88017, Zakarpattia, Ukraine
| | - Y A Bandurin
- Institute of Electron Physics, National Academy of Sciences, Universitetska 21, Uzhhorod, 88017, Zakarpattia, Ukraine
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Blitzer GC, Paz C, Glassey A, Ganz OR, Giri J, Pennati A, Meyers RO, Bates AM, Nickel KP, Weiss M, Morris ZS, Mattison RJ, McDowell KA, Croxford E, Chappell RJ, Glazer TA, Rogus-Pulia NM, Galipeau J, Kimple RJ. Functionality of bone marrow mesenchymal stromal cells derived from head and neck cancer patients - A FDA-IND enabling study regarding MSC-based treatments for radiation-induced xerostomia. Radiother Oncol 2024; 192:110093. [PMID: 38224919 PMCID: PMC10922976 DOI: 10.1016/j.radonc.2024.110093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 01/09/2024] [Accepted: 01/10/2024] [Indexed: 01/17/2024]
Abstract
PURPOSE Salivary dysfunction is a significant side effect of radiation therapy for head and neck cancer (HNC). Preliminary data suggests that mesenchymal stromal cells (MSCs) can improve salivary function. Whether MSCs from HNC patients who have completed chemoradiation are functionally similar to those from healthy patients is unknown. We performed a pilot clinical study to determine whether bone marrow-derived MSCs [MSC(M)] from HNC patients could be used for the treatment of RT-induced salivary dysfunction. METHODS An IRB-approved pilot clinical study was undertaken on HNC patients with xerostomia who had completed treatment two or more years prior. Patients underwent iliac crest bone marrow aspirate and MSC(M) were isolated and cultured. Culture-expanded MSC(M) were stimulated with IFNγ and cryopreserved prior to reanimation and profiling for functional markers by flow cytometry and ELISA. MSC(M) were additionally injected into mice with radiation-induced xerostomia and the changes in salivary gland histology and salivary production were examined. RESULTS A total of six subjects were enrolled. MSC(M) from all subjects were culture expanded to > 20 million cells in a median of 15.5 days (range 8-20 days). Flow cytometry confirmed that cultured cells from HNC patients were MSC(M). Functional flow cytometry demonstrated that these IFNγ-stimulated MSC(M) acquired an immunosuppressive phenotype. IFNγ-stimulated MSC(M) from HNC patients were found to express GDNF, WNT1, and R-spondin 1 as well as pro-angiogenesis and immunomodulatory cytokines. In mice, IFNγ-stimulated MSC(M) injection after radiation decreased the loss of acinar cells, decreased the formation of fibrosis, and increased salivary production. CONCLUSIONS MSC (M) from previously treated HNC patients can be expanded for auto-transplantation and are functionally active. Furthermore IFNγ-stimulated MSC(M) express proteins implicated in salivary gland regeneration. This study provides preliminary data supporting the feasibility of using autologous MSC(M) from HNC patients to treat RT-induced salivary dysfunction.
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Affiliation(s)
- Grace C Blitzer
- Department of Human Oncology, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA
| | - Cristina Paz
- Department of Human Oncology, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA
| | - Annemarie Glassey
- Department of Human Oncology, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA
| | - Olga R Ganz
- Department of Medicine, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA
| | - Jayeeta Giri
- Department of Medicine, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA
| | - Andrea Pennati
- Department of Medicine, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA; UW Carbone Cancer Center, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA
| | - Ross O Meyers
- Department of Human Oncology, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA; Department of Medicine, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA
| | - Amber M Bates
- Department of Human Oncology, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA
| | - Kwangok P Nickel
- Department of Human Oncology, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA
| | - Marissa Weiss
- Department of Human Oncology, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA
| | - Zachary S Morris
- Department of Human Oncology, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA
| | - Ryan J Mattison
- Department of Medicine, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA; UW Carbone Cancer Center, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA
| | - Kimberly A McDowell
- Department of Medicine, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA
| | - Emma Croxford
- Department of Biostatistics and Medical Informatics, 610 Walnut Street, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53726 USA
| | - Richard J Chappell
- Department of Biostatistics and Medical Informatics, 610 Walnut Street, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53726 USA; UW Carbone Cancer Center, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA
| | - Tiffany A Glazer
- Department of Surgery, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA
| | - Nicole M Rogus-Pulia
- Department of Medicine, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA; UW Carbone Cancer Center, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA; Geriatric Research Education and Clinical Center, 2500 Overlook Terrace, William S. Middleton Memorial Veterans Hospital, Madison, WI 53705 USA
| | - Jacques Galipeau
- Department of Medicine, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA; UW Carbone Cancer Center, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA
| | - Randall J Kimple
- Department of Human Oncology, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA; UW Carbone Cancer Center, 600 Highland Ave, University of Wisconsin, School of Medicine and Public Health, Madison, WI 53705 USA.
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AboZaid OAR, Abdel-Maksoud MA, Saleh IA, El-Tayeb MA, El-Sonbaty SM, Shoker FE, Salem MA, Emad AM, Mani S, Deva Magendhra Rao AK, Mamdouh MA, Kotob MH, Aufy M, Kodous AS. Targeting the NF-κB p65/Bcl-2 signaling pathway in hepatic cellular carcinoma using radiation assisted synthesis of zinc nanoparticles coated with naturally isolated gallic acid. Biomed Pharmacother 2024; 172:116274. [PMID: 38364738 DOI: 10.1016/j.biopha.2024.116274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 02/01/2024] [Accepted: 02/13/2024] [Indexed: 02/18/2024] Open
Abstract
PURPOSE Oral diethylnitrosamine (DEN) is a known hepatocarcinogen that damages the liver and causes cancer. DEN damages the liver through reactive oxygen species-mediated inflammation and biological process regulation. MATERIALS AND METHODS Gallic acid-coated zinc oxide nanoparticles (Zn-GANPs) were made from zinc oxide (ZnO) synthesized by irradiation dose of 50 kGy utilizing a Co-60 γ-ray source chamber with a dose rate of 0.83 kGy/h and gallic acid from pomegranate peel. UV-visible (UV) spectrophotometry verified Zn-GANP synthesis. TEM, DLS, and FTIR were utilized to investigate ZnO-NPs' characteristics. Rats were orally exposed to DEN for 8 weeks at 20 mg/kg five times per week, followed by intraperitoneal injection of Zn-GANPs at 20 mg/kg for 5 weeks. Using oxidative stress, anti-inflammatory, liver function, histologic, apoptotic, and cell cycle parameters for evaluating Zn-GANPs treatment. RESULTS DEN exposure elevated inflammatory markers (AFP and NF-κB p65), transaminases (AST, ALT), γ-GT, globulin, and total bilirubin, with reduced protein and albumin levels. It also increased MDA levels, oxidative liver cell damage, and Bcl-2, while decreasing caspase-3 and antioxidants like GSH, and CAT. Zn-GANPs significantly mitigated these effects and lowered lipid peroxidation, AST, ALT, and γ-GT levels, significantly increased CAT and GSH levels (p<0.05). Zn-GANPs caused S and G2/M cell cycle arrest and G0/G1 apoptosis. These results were associated with higher caspase-3 levels and lower Bcl-2 and TGF-β1 levels. Zn-GANPs enhance and restore the histology and ultrastructure of the liver in DEN-induced rats. CONCLUSION The data imply that Zn-GANPs may prevent and treat DEN-induced liver damage and carcinogenesis.
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Affiliation(s)
- Omayma A R AboZaid
- Department of Biochemistry, Faculty of Veterinary Medicine, Moshtohor, Benha University, Egypt
| | | | | | - Mohamed A El-Tayeb
- Botany and Microbiology department- College of Science- King Saud University, Saudi Arabia
| | - Sawsan M El-Sonbaty
- Radiation Microbiology Department, National Center for Radiation Research & Technology (NCRRT), Egyptian Atomic-Energy Authority (EAEA), Egypt
| | - Faten E Shoker
- Department of Biochemistry, Faculty of Veterinary Medicine, Moshtohor, Benha University, Egypt
| | - Maha A Salem
- Pharmacology and Toxicology Department, Faculty of Pharmacy, Modern University for Technology and Information, Egypt
| | - Ayat M Emad
- Pharmacognosy Department, Faculty of Pharmacy, October 6 University, Sixth of October City, Giza 12585, Egypt
| | - Samson Mani
- Department of Research, Rajiv Gandhi Cancer Institute, and Research Centre, Sector 5, Rohini, Delhi 110085, India; Department of Molecular Oncology, Cancer Institute (WIA), 38, Sardar Patel Road, P.O. Box 600036, Chennai, Tamilnadu, India
| | | | - Mohamed A Mamdouh
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, October 6 University, 6th of October City, Giza 12585, Egypt
| | - Mohamed H Kotob
- Department of Pharmaceutical Sciences, Division of Pharmacology and Toxicology, University of Vienna, Vienna, Austria; Department of Pathology, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt
| | - Mohammed Aufy
- Department of Pharmaceutical Sciences, Division of Pharmacology and Toxicology, University of Vienna, Vienna, Austria.
| | - Ahmad S Kodous
- Department of Molecular Oncology, Cancer Institute (WIA), 38, Sardar Patel Road, P.O. Box 600036, Chennai, Tamilnadu, India; Radiation Biology department, National Center for Radiation Research & Technology (NCRRT), Egyptian Atomic-Energy Authority (EAEA), Egypt.
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Tubridy EA, Taunk NK, Ko EM. Treatment of node-positive endometrial cancer: chemotherapy, radiation, immunotherapy, and targeted therapy. Curr Treat Options Oncol 2024; 25:330-345. [PMID: 38270800 PMCID: PMC10894756 DOI: 10.1007/s11864-023-01169-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/13/2023] [Indexed: 01/26/2024]
Abstract
OPINION STATEMENT The standard of treatment for node-positive endometrial cancer (FIGO Stage IIIC) in North America has been systemic therapy with or without additional external beam radiation therapy (RT) given as pelvic or extended field RT. However, this treatment paradigm is rapidly evolving with improvements in systemic chemotherapy, the emergence of targeted therapies, and improved molecular characterization of these tumors. The biggest question facing providers regarding management of stage IIIC endometrial cancer at this time is: what is the best management strategy to use with regard to combinations of cytotoxic chemotherapy, immunotherapy, other targeted therapeutics, and radiation that will maximize clinical benefit and minimize toxicities for the best patient outcomes? While clinicians await the results of ongoing clinical trials regarding combined immunotherapy/RT as well as management based on molecular classification, we must make decisions regarding the best treatment combinations for our patients. Based on the available literature, we are offering stage IIIC patients without measurable disease postoperatively both adjuvant chemotherapy and IMRT with carboplatin, paclitaxel, and with or without pembrolizumab/dostarlimab as primary adjuvant therapy. Patients with measurable disease post operatively, high risk histologies, or stage IV disease receive chemoimmunotherapy, and vaginal brachytherapy is added for those with uterine risk factors for vaginal recurrence. In the setting of endometrioid EC recurrence more than 6 months after treatment, patients with pelvic nodal and vaginal recurrence are offered IMRT and brachytherapy without chemotherapy. For measurable recurrence not suitable for pelvic radiation alone, chemoimmunotherapy is preferred as standard of care.
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Affiliation(s)
- Elizabeth A Tubridy
- Division of Gynecologic Oncology, Department of Obstetrics & Gynecology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, 19104, USA.
| | - Neil K Taunk
- Department of Radiation Oncology, Perelman Center for Advanced Medicine, Philadelphia, PA, 19104, USA
| | - Emily M Ko
- Division of Gynecologic Oncology, Department of Obstetrics & Gynecology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, 19104, USA
- Leonard Davis Institute of Health Economics, University of Pennsylvania Health Systems, Philadelphia, PA, USA
- Penn Center for Cancer Care Innovation, Abramson Cancer Center, University of Pennsylvania Health Systems, Philadelphia, PA, USA
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Masuda T, Takei Y, Arao S. Is the use of gonad protection protectors necessary during infants chest radiography? Radiologia (Engl Ed) 2024; 66:107-113. [PMID: 38614527 DOI: 10.1016/j.rxeng.2022.08.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 08/21/2022] [Indexed: 04/15/2024]
Abstract
INTRODUCTION AND OBJECTIVES To compare gonad doses with and without a gonad protector and to optimize the use of gonadal protectors in infants thorax radiography. MATERIALS AND METHODS Two pediatric anthropomorphic phantoms are used: an X-ray system for KXO-50SS/DRX-3724HD, and a digital radiography system for CALNEO Smart C12, with and without a gonad protector during infants thorax radiography. A real time skin dosimeter is placed on the X-ray system, and a real time skin dosimeter is inserted on the front side of the mammary gland, the front and back sides of the true pelvis level, and on the ovaries and testes. The X-ray system is irradiated 15 times using phantoms with and without a gonad protector. The measured entrance patient doses values of for the real time skin dosimeter are compared for each phantom, with and without the gonad protector. RESULTS The medium of measured entrance patient doses values for front side dose of the true pelvis level with and without the protector are 10.00 and 5.00 μGy at newborn, and 10.00 and 0.00μGy at one year, respectively. The medium of measured entrance patient doses values for the back side dose of the true pelvis level with and without the protector are 0.00 and 0.00 μGy at both newborn one year, respectively. The measured entrance patient doses cannot be detected in the ovaries and testes with or without the protector. No significant differences are observed in the measured entrance patient doses values for the front and back side doses of the pelvis, ovaries, and testes at newborn and one year, with and without the protector (p>0.05). CONCLUSIONS No significant difference was observed in gonad dose measurements with and without the gonad protector during infants chest radiography. We believe that gonadal protector wearing is not necessary.
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Affiliation(s)
- T Masuda
- Departamento de Tecnología Radiológica, Facultad de Ciencia y Tecnología de la Salud, Universidad de Bienestar Médico de Kawasaki, Kurashiki, Okayama, Japan.
| | - Y Takei
- Departamento de Tecnología Radiológica, Facultad de Ciencia y Tecnología de la Salud, Universidad de Bienestar Médico de Kawasaki, Kurashiki, Okayama, Japan
| | - S Arao
- Departamento de Tecnología Radiológica, Facultad de Ciencia y Tecnología de la Salud, Universidad de Bienestar Médico de Kawasaki, Kurashiki, Okayama, Japan
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36
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Cooley LF, Srivastava A, Shore ND. Updates on Management of Biochemical Recurrent Prostate Cancer. Curr Treat Options Oncol 2024; 25:284-292. [PMID: 38286895 DOI: 10.1007/s11864-023-01164-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/10/2023] [Indexed: 01/31/2024]
Abstract
OPINION STATEMENT Patients with biochemical recurrent prostate cancer (BCR) are a heterogeneous group, whereby a personalized approach to management is critical. Patients with high-risk features such as PSA doubling time (PSADT) ≤ 9-12 months warrant earlier imaging for metastasis detection and consideration for intensified therapy (beyond intermittent androgen deprivation alone) during this phase of BCR-only disease. The BCR phase represents a unique opportunity to impact disease survival and delay metastasis progression. There is compelling evidence from the EMBARK trial that ADT monotherapy is no longer the optimal consideration for high-risk BCR patients.
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Affiliation(s)
- Lauren Folgosa Cooley
- Atlantic Urology Clinics, Myrtle Beach, SC, USA
- Carolina Urologic Research Center, Myrtle Beach, SC, USA
| | - Abhishek Srivastava
- Atlantic Urology Clinics, Myrtle Beach, SC, USA
- Carolina Urologic Research Center, Myrtle Beach, SC, USA
| | - Neal D Shore
- Atlantic Urology Clinics, Myrtle Beach, SC, USA.
- Carolina Urologic Research Center, Myrtle Beach, SC, USA.
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Wali AR, Pathuri S, Brandel MG, Sindewald RW, Hirshman BR, Bravo JA, Steinberg JA, Olson SE, Pannell JS, Khalessi A, Santiago-Dieppa D. Reducing frame rate and pulse rate for routine diagnostic cerebral angiography: ALARA principles in practice. J Cerebrovasc Endovasc Neurosurg 2024; 26:46-50. [PMID: 38092365 PMCID: PMC10995471 DOI: 10.7461/jcen.2023.e2023.01.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 08/21/2023] [Accepted: 09/16/2023] [Indexed: 04/06/2024] Open
Abstract
OBJECTIVE Diagnostic cerebral angiograms (DCAs) are widely used in neurosurgery due to their high sensitivity and specificity to diagnose and characterize pathology using ionizing radiation. Eliminating unnecessary radiation is critical to reduce risk to patients, providers, and health care staff. We investigated if reducing pulse and frame rates during routine DCAs would decrease radiation burden without compromising image quality. METHODS We performed a retrospective review of prospectively acquired data after implementing a quality improvement protocol in which pulse rate and frame rate were reduced from 15 p/s to 7.5 p/s and 7.5 f/s to 4.0 f/s respectively. Radiation doses and exposures were calculated. Two endovascular neurosurgeons reviewed randomly selected angiograms of both doses and blindly assessed their quality. RESULTS A total of 40 consecutive angiograms were retrospectively analyzed, 20 prior to the protocol change and 20 after. After the intervention, radiation dose, radiation per run, total exposure, and exposure per run were all significantly decreased even after adjustment for BMI (all p<0.05). On multivariable analysis, we identified a 46% decrease in total radiation dose and 39% decrease in exposure without compromising image quality or procedure time. CONCLUSIONS We demonstrated that for routine DCAs, pulse rate of 7.5 with a frame rate of 4.0 is sufficient to obtain diagnostic information without compromising image quality or elongating procedure time. In the interest of patient, provider, and health care staff safety, we strongly encourage all interventionalists to be cognizant of radiation usage to avoid unnecessary radiation exposure and consequential health risks.
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Affiliation(s)
- Arvin R. Wali
- Department of Neurosurgery, University of California San Diego, CA, USA
| | - Sarath Pathuri
- Long School of Medicine, University of Texas Health Sciences Center at San Antonio, TX, USA
| | | | - Ryan W. Sindewald
- Department of Neurosurgery, University of California San Diego, CA, USA
| | - Brian R. Hirshman
- Department of Neurosurgery, University of California San Diego, CA, USA
| | - Javier A. Bravo
- Department of General Surgery, University of California San Diego, CA, USA
| | | | - Scott E. Olson
- Department of Neurosurgery, University of California San Diego, CA, USA
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Rudolf AM, Hood WR. Mitochondrial stress in the spaceflight environment. Mitochondrion 2024; 76:101855. [PMID: 38403094 DOI: 10.1016/j.mito.2024.101855] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Revised: 02/12/2024] [Accepted: 02/22/2024] [Indexed: 02/27/2024]
Abstract
Space is a challenging environment that deregulates individual homeostasis. The main external hazards associated with spaceflight include ionizing space radiation, microgravity, isolation and confinement, distance from Earth, and hostile environment. Characterizing the biological responses to spaceflight environment is essential to validate the health risks, and to develop effective protection strategies. Mitochondria energetics is a key mechanism underpinning many physiological, ecological and evolutionary processes. Moreover, mitochondrial stress can be considered one of the fundamental features of space travel. So, we attempt to synthesize key information regarding the extensive effects of spaceflight on mitochondria. In summary, mitochondria are affected by all of the five main hazards of spaceflight at multiple levels, including their morphology, respiratory function, protein, and genetics, in various tissues and organ systems. We emphasize that investigating mitochondrial biology in spaceflight conditions should become the central focus of research on the impacts of spaceflight on human health, as this approach will help resolve numerous challenges of space health and combat several health disorders associated with mitochondrial dysfunction.
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Affiliation(s)
- Agata M Rudolf
- Department of Biological Sciences, Auburn University, Auburn, AL, USA; Space Technology Centre, AGH University of Science and Technology, Krakow, Poland.
| | - Wendy R Hood
- Department of Biological Sciences, Auburn University, Auburn, AL, USA
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Li R, Zhang S, Li F, Lin X, Luo M, Wang S, Yang L, Zhao X. Impact of time-lagging and time-preceding environmental variables on top layer soil moisture in semiarid grasslands. Sci Total Environ 2024; 912:169406. [PMID: 38114037 DOI: 10.1016/j.scitotenv.2023.169406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 12/08/2023] [Accepted: 12/13/2023] [Indexed: 12/21/2023]
Abstract
Top soil moisture (SM) is an important medium connecting the exchange of matter and energy between the ground and the atmosphere. Previous studies of the relationship between SM and environmental factors, especially aerodynamics, have lacked analysis of the variability in the timing of effects. In this study, we analyzed how environmental factors affect SM, as well as soil moisture memory, by observing precipitation, radiation, and wind speed during the 2019 to 2021 growing seasons in grazing prohibited and grazed areas of a semiarid grassland. The results show that there is a clear threshold (7 mm) for the effect of precipitation on SM, that changes in SM across time scales were influenced by preceding precipitation and net radiation in addition to lagging vegetation greening characteristics (NDVI) and wind speed, and that the role of albedo was related to grazing management. The inhibitory effect of albedo on SM and the depletion of SM by NDVI were more pronounced in comparison to other meteorological factors. Wind speed, precipitation, and radiation directly or indirectly influenced SM duration, and these relationships varied with grazing management and annual variation. These results help to clarify the influence of environmental factors on SM, and provide insight for minimizing the degradation of grassland ecosystems in the process of climate change.
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Affiliation(s)
- Ruishen Li
- College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Shengwei Zhang
- College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China; Key Laboratory of Water Resources Protection and Utilization of Inner Mongolia Autonomous Region, Hohhot 010018, China; Autonomous Region Collaborative Innovation Center for Integrated Management of Water Resources and Water Environment in the Inner Mongolia Reaches of the Yellow River, Hohhot 010018, China.
| | - Fengming Li
- Inner Mongolia Autonomous Region Management Center of Sanshenggong Hydro-junction in the Yellow River, Bayannur 015200, China
| | - Xi Lin
- College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Meng Luo
- College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Shuai Wang
- College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Lin Yang
- College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
| | - Xingyu Zhao
- College of Water Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
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Faanu A, Tettey-Larbi L, Akuo-ko EO, Kwabena Gyekye P, Kpeglo DO, Lawluvi H, Kansaana C, Adjei-Kyereme S, Efa AO, Tóth-Bodrogi E, Kovács T, Shahrokhi A. Radiological landscape of natural resources and mining: Unveiling the environmental impact of naturally occurring radioactive materials in Ghana's mining areas. Heliyon 2024; 10:e24959. [PMID: 38317974 PMCID: PMC10838772 DOI: 10.1016/j.heliyon.2024.e24959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 01/08/2024] [Accepted: 01/17/2024] [Indexed: 02/07/2024] Open
Abstract
This study provides a general observation of the status of naturally occurring radioactive materials (NORMs) distribution in mining and industrial areas of Ghana in order to establish regional and national data on NORMs. The study includes data on radioactivity concentrations of U-238, Th-232, and K-40 in soils and for water concentrations of Ra-226, Th-228, and K-40 from various mining, oil, and gas communities, as well as water sources used for crop farming and farmlands. The average activity concentrations of U-238, Th-232, and K-40 in the soil samples were found to be 59 ± 16 Bq/kg, 48 ± 15 Bq/kg, and 286 ± 57 Bq/kg, respectively. The average concentration of Ra-226, Th-228, and K-40 in the water samples were found to be 1.62 ± 0.33 Bq/L, 2.08 ± 0.53 Bq/L, and 22.36 ± 3.44 Bq/L, respectively. The estimated average annual effective doses from external and internal exposure pathways in soil and water samples were 0.09 mSv/y and 0.54 mSv/y, respectively. The total annual effective dose resulting from both exposure pathways was calculated to be 0.63 mSv/y, which is below the 1 mSv/y dose limit recommended by the International Commission on Radiological Protection (ICRP) for controlling public radiation exposure. Based on the radiological hazard indices, the majority of the soil samples were found to be suitable as building materials as their respective indices were below the limits except for two sample locations and the sludge and scale samples. The average Excess Lifetime Cancer Risk (ELCR) value of the water samples was 1.6 times greater than the recommended value of 1.16 × 10-3, presenting a relatively higher risk to the public of developing cancer. No significant regional differences in the levels of radioactive elements. The regression models demonstrate strong interrelationships between the studied elements, with high R-squared values suggesting a predictable nature of one element's concentration based on others.
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Affiliation(s)
- Augustine Faanu
- Radiological and Non-ionizing Installations Directorate, Nuclear Regulatory Authority, Ghana
| | - Lordford Tettey-Larbi
- Radiological and Non-ionizing Installations Directorate, Nuclear Regulatory Authority, Ghana
- Research Centre for Biochemical, Environmental and Chemical Engineering, University of Pannonia, 8200, Veszprém, Hungary
| | - Esther Osei Akuo-ko
- Research Centre for Biochemical, Environmental and Chemical Engineering, University of Pannonia, 8200, Veszprém, Hungary
| | - Prince Kwabena Gyekye
- Radiological and Non-ionizing Installations Directorate, Nuclear Regulatory Authority, Ghana
| | - David Okoh Kpeglo
- Radiation Protection Institute, Ghana Atomic Energy Commission, Ghana
| | - Henry Lawluvi
- Radiological and Non-ionizing Installations Directorate, Nuclear Regulatory Authority, Ghana
| | - Charles Kansaana
- Radiological and Non-ionizing Installations Directorate, Nuclear Regulatory Authority, Ghana
| | - Serwaa Adjei-Kyereme
- Radiological and Non-ionizing Installations Directorate, Nuclear Regulatory Authority, Ghana
| | - Alexander Opoku Efa
- Radiological and Non-ionizing Installations Directorate, Nuclear Regulatory Authority, Ghana
| | - Edit Tóth-Bodrogi
- Research Centre for Biochemical, Environmental and Chemical Engineering, University of Pannonia, 8200, Veszprém, Hungary
| | - Tibor Kovács
- Research Centre for Biochemical, Environmental and Chemical Engineering, University of Pannonia, 8200, Veszprém, Hungary
| | - Amin Shahrokhi
- Research Centre for Biochemical, Environmental and Chemical Engineering, University of Pannonia, 8200, Veszprém, Hungary
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Peiliang Wang MD, Yikun Li MM, Mengyu Zhao MM, Jinming Yu MD, Feifei Teng MD. Distinguishing immune checkpoint inhibitor-related pneumonitis from radiation pneumonitis by CT radiomics features in non-small cell lung cancer. Int Immunopharmacol 2024; 128:111489. [PMID: 38266450 DOI: 10.1016/j.intimp.2024.111489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 12/26/2023] [Accepted: 01/02/2024] [Indexed: 01/26/2024]
Abstract
PURPOSE To develop a CT-based model to classify pneumonitis etiology in patients with non-small cell lung cancer(NSCLC) after radiotherapy(RT) and Immune checkpoint inhibitors(ICIs). METHODS We retrospectively identified 130 NSCLC patients who developed pneumonitis after receipt of ICIs only (n = 50), thoracic RT only (n = 50) (ICIs only + thoracic RT only, the training cohort, n = 100), and RT + ICIs (the test cohort, n = 30). Clinical and CT radiomics features were described and compared between different groups. We constructed a random forest (RF) classifier and a linear discriminant analysis (LDA) classifier by CT radiomics to discern pneumonitis etiology. RESULTS The patients in RT + ICIs group have more high grade (grade 3-4) pneumonitis compared to patients in ICIs only or RT only group (p < 0.05). Pneumonitis after the combined therapy was not a simple superposition mode of RT-related pneumonitis(RP) and ICI-related pneumonitis(CIP), resulting in the distinct characteristics of both RT and ICIs-related pneumonitis. The RF classifier showed favorable discrimination between RP and CIP with an area under the receiver operating curve (AUC) of 0.859 (95 %CI: 0.788-0.929) in the training cohort and 0.851 (95 % CI: 0.700-1) in the test cohort. The LDA classifier achieved an AUC of 0.881 (95 %CI: 0.815-0.947) in the training cohort and 0.842 (95 %CI: 0.686-0.997) in the test cohort. Our analysis revealed four principal CT-based features shared across both models:original_glrlm_LongRunLowGrayLevelEmphasis, wavelet-HLL_firstorder_Median, wavelet-LLL_ngtdm_Busyness, and wavelet-LLL_glcm_JointAverage. CONCLUSION CT radiomics-based classifiers could provide a noninvasive method to identify the predominant etiology in NSCLC patients who developed pneumonitis after RT alone, ICIs alone or RT + ICIs.
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Affiliation(s)
- M D Peiliang Wang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, China; Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Cheeloo College of Medicine, Shandong University, Jinan 250117, China
| | - M M Yikun Li
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, China
| | - M M Mengyu Zhao
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, China
| | - M D Jinming Yu
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, China; Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Cheeloo College of Medicine, Shandong University, Jinan 250117, China
| | - M D Feifei Teng
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan 250117, China; Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Cheeloo College of Medicine, Shandong University, Jinan 250117, China.
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Li W, Huang Z, Chen Z, Jiang Y, Zhou C, Zhang X, Fan W, Zhao Y, Zhang L, Wan L, Yang Y, Zheng H, Liang D, Hu Z. Learning CT-free attenuation-corrected total-body PET images through deep learning. Eur Radiol 2024:10.1007/s00330-024-10647-1. [PMID: 38355987 DOI: 10.1007/s00330-024-10647-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 11/30/2023] [Accepted: 01/08/2024] [Indexed: 02/16/2024]
Abstract
OBJECTIVES Total-body PET/CT scanners with long axial fields of view have enabled unprecedented image quality and quantitative accuracy. However, the ionizing radiation from CT is a major issue in PET imaging, which is more evident with reduced radiopharmaceutical doses in total-body PET/CT. Therefore, we attempted to generate CT-free attenuation-corrected (CTF-AC) total-body PET images through deep learning. METHODS Based on total-body PET data from 122 subjects (29 females and 93 males), a well-established cycle-consistent generative adversarial network (Cycle-GAN) was employed to generate CTF-AC total-body PET images directly while introducing site structures as prior information. Statistical analyses, including Pearson correlation coefficient (PCC) and t-tests, were utilized for the correlation measurements. RESULTS The generated CTF-AC total-body PET images closely resembled real AC PET images, showing reduced noise and good contrast in different tissue structures. The obtained peak signal-to-noise ratio and structural similarity index measure values were 36.92 ± 5.49 dB (p < 0.01) and 0.980 ± 0.041 (p < 0.01), respectively. Furthermore, the standardized uptake value (SUV) distribution was consistent with that of real AC PET images. CONCLUSION Our approach could directly generate CTF-AC total-body PET images, greatly reducing the radiation risk to patients from redundant anatomical examinations. Moreover, the model was validated based on a multidose-level NAC-AC PET dataset, demonstrating the potential of our method for low-dose PET attenuation correction. In future work, we will attempt to validate the proposed method with total-body PET/CT systems in more clinical practices. CLINICAL RELEVANCE STATEMENT The ionizing radiation from CT is a major issue in PET imaging, which is more evident with reduced radiopharmaceutical doses in total-body PET/CT. Our CT-free PET attenuation correction method would be beneficial for a wide range of patient populations, especially for pediatric examinations and patients who need multiple scans or who require long-term follow-up. KEY POINTS • CT is the main source of radiation in PET/CT imaging, especially for total-body PET/CT devices, and reduced radiopharmaceutical doses make the radiation burden from CT more obvious. • The CT-free PET attenuation correction method would be beneficial for patients who need multiple scans or long-term follow-up by reducing additional radiation from redundant anatomical examinations. • The proposed method could directly generate CT-free attenuation-corrected (CTF-AC) total-body PET images, which is beneficial for PET/MRI or PET-only devices lacking CT image poses.
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Affiliation(s)
- Wenbo Li
- Lauterbur Research Center for Biomedical Imaging, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- Shenzhen College of Advanced Technology, University of Chinese Academy of Sciences, Beijing, 101408, China
| | - Zhenxing Huang
- Lauterbur Research Center for Biomedical Imaging, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Zixiang Chen
- Lauterbur Research Center for Biomedical Imaging, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- Shenzhen College of Advanced Technology, University of Chinese Academy of Sciences, Beijing, 101408, China
| | - Yongluo Jiang
- Department of Nuclear Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Chao Zhou
- Department of Nuclear Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Xu Zhang
- Department of Nuclear Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Wei Fan
- Department of Nuclear Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Yumo Zhao
- Central Research Institute, United Imaging Healthcare Group, Shanghai, 201807, China
| | - Lulu Zhang
- Lauterbur Research Center for Biomedical Imaging, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Liwen Wan
- Lauterbur Research Center for Biomedical Imaging, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Yongfeng Yang
- Lauterbur Research Center for Biomedical Imaging, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- Key Laboratory of Biomedical Imaging Science and System, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Hairong Zheng
- Lauterbur Research Center for Biomedical Imaging, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- Key Laboratory of Biomedical Imaging Science and System, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Dong Liang
- Lauterbur Research Center for Biomedical Imaging, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
- Key Laboratory of Biomedical Imaging Science and System, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Zhanli Hu
- Lauterbur Research Center for Biomedical Imaging, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China.
- Key Laboratory of Biomedical Imaging Science and System, Chinese Academy of Sciences, Shenzhen, 518055, China.
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Ikeda H, Takai M, Tsujiuchi T. Lysophosphatidic acid (LPA) receptor-mediated signaling and cellular responses to anticancer drugs and radiation of cancer cells. Adv Biol Regul 2024; 92:101029. [PMID: 38377635 DOI: 10.1016/j.jbior.2024.101029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Revised: 01/30/2024] [Accepted: 02/08/2024] [Indexed: 02/22/2024]
Abstract
Lysophosphatidic acid (LPA) is a simple physiological lipid and structurally consists of a fatty, a phosphate and a glycerol. LPA binds to G protein-coupled LPA receptors (LPA1 to LPA6). LPA receptor-mediated signaling mediates a variety of biological responses, such as cell growth, migration, morphogenesis, differentiation and protection from apoptosis. It is considered that LPA receptor-mediated signaling plays an important role in the pathogenesis of human malignancies. So far, genetic and epigenetic alterations of LPA receptors have been found in several cancer cells as well as abnormal LPA production. In addition, LPA receptor-mediated signaling regulates the promotion of malignant behaviors, including chemo- and/or radiation-resistance. Chemotherapy and radiotherapy are the common approaches to the treatments of cancers. However, resistance to anticancer drugs and irradiation is the most critical limitation for chemotherapy and radiotherapy. In this review, we provide the roles of LPA receptor-mediated signaling in the regulation of cellular responses induced by chemotherapeutic agents and irradiation and its biological utility as a possible molecular target for improving cancer cell responses to chemotherapy and radiotherapy.
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Affiliation(s)
- Hiroko Ikeda
- Division of Molecular Oncology, Department of Life Science, Faculty of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Miwa Takai
- Division of Molecular Oncology, Department of Life Science, Faculty of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan
| | - Toshifumi Tsujiuchi
- Division of Molecular Oncology, Department of Life Science, Faculty of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashiosaka, Osaka 577-8502, Japan.
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Hitchcock KE, Miller ED, Shi Q, Dixon JG, Gholami S, White SB, Wu C, Goulet CC, George M, Jee KW, Wright CL, Yaeger R, Shergill A, Hong TS, George TJ, O'Reilly EM, Meyerhardt JA, Romesser PB. Alliance for clinical trials in Oncology (Alliance) trial A022101/NRG-GI009: a pragmatic randomized phase III trial evaluating total ablative therapy for patients with limited metastatic colorectal cancer: evaluating radiation, ablation, and surgery (ERASur). BMC Cancer 2024; 24:201. [PMID: 38350888 PMCID: PMC10863118 DOI: 10.1186/s12885-024-11899-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 01/19/2024] [Indexed: 02/15/2024] Open
Abstract
BACKGROUND For patients with liver-confined metastatic colorectal cancer (mCRC), local therapy of isolated metastases has been associated with long-term progression-free and overall survival (OS). However, for patients with more advanced mCRC, including those with extrahepatic disease, the efficacy of local therapy is less clear although increasingly being used in clinical practice. Prospective studies to clarify the role of metastatic-directed therapies in patients with mCRC are needed. METHODS The Evaluating Radiation, Ablation, and Surgery (ERASur) A022101/NRG-GI009 trial is a randomized, National Cancer Institute-sponsored phase III study evaluating if the addition of metastatic-directed therapy to standard of care systemic therapy improves OS in patients with newly diagnosed limited mCRC. Eligible patients require a pathologic diagnosis of CRC, have BRAF wild-type and microsatellite stable disease, and have 4 or fewer sites of metastatic disease identified on baseline imaging. Liver-only metastatic disease is not permitted. All metastatic lesions must be amenable to total ablative therapy (TAT), which includes surgical resection, microwave ablation, and/or stereotactic ablative body radiotherapy (SABR) with SABR required for at least one lesion. Patients without overt disease progression after 16-26 weeks of first-line systemic therapy will be randomized 1:1 to continuation of systemic therapy with or without TAT. The trial activated through the Cancer Trials Support Unit on January 10, 2023. The primary endpoint is OS. Secondary endpoints include event-free survival, adverse events profile, and time to local recurrence with exploratory biomarker analyses. This study requires a total of 346 evaluable patients to provide 80% power with a one-sided alpha of 0.05 to detect an improvement in OS from a median of 26 months in the control arm to 37 months in the experimental arm with a hazard ratio of 0.7. The trial uses a group sequential design with two interim analyses for futility. DISCUSSION The ERASur trial employs a pragmatic interventional design to test the efficacy and safety of adding multimodality TAT to standard of care systemic therapy in patients with limited mCRC. TRIAL REGISTRATION ClinicalTrials.gov: NCT05673148, registered December 21, 2022.
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Affiliation(s)
| | | | - Qian Shi
- Alliance Statistics and Data Management Center, Mayo Clinic, Rochester, MN, USA
| | - Jesse G Dixon
- Alliance Statistics and Data Management Center, Mayo Clinic, Rochester, MN, USA
| | | | | | | | | | - Manju George
- COLONTOWN/PALTOWN Development Foundation, Crownsville, MD, USA
| | | | | | - Rona Yaeger
- Memorial Sloan Kettering Cancer Center, 1275 York Avenue, Box #22, 10065, New York, NY, USA
| | - Ardaman Shergill
- Alliance Protocol Operations Office, University of Chicago, Chicago, IL, USA
| | | | | | - Eileen M O'Reilly
- Memorial Sloan Kettering Cancer Center, 1275 York Avenue, Box #22, 10065, New York, NY, USA
| | | | - Paul B Romesser
- Memorial Sloan Kettering Cancer Center, 1275 York Avenue, Box #22, 10065, New York, NY, USA.
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Geinitz H, Silberberger E, Spiegl K, Feichtinger J, Wagner H, Hermann P, Bräutigam E, Track C, Weis EM, Venhoda C, Huppert R, Spindelbalker-Renner B, Zauner-Babor G, Nyiri DV, Karasek N, Erdei M, Gheju R, Gruber G, Egger M, Dieplinger B. SARS-CoV-2 vaccination willingness and humoral vaccination response in radiation oncology patients. Vaccine 2024; 42:945-959. [PMID: 38246842 DOI: 10.1016/j.vaccine.2024.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 11/27/2023] [Accepted: 01/02/2024] [Indexed: 01/23/2024]
Abstract
BACKGROUND SARS-CoV-2 infection has been and, in some parts, still is a threat to oncologic patients, making it crucial to understand perception of vaccination and immunologic responses in this vulnerable patient segment. SARS-CoV-2 vaccines in relation to malignant disease characteristics and therapies have so far not been studied consecutively in larger oncologic patient populations. This study captures SARS-CoV-2 vaccination willingness and humoral immune response in a large consecutive oncologic patient collective at the beginning of 2021. METHODS 1142 patients were consecutively recruited over 5.5 months at a tertiary department for radiation oncology and were assessed for vaccination willingness via a standardized interview. In already vaccinated patients total SARS-CoV-2 S antibody titres against the spike protein (Anti-SARS-CoV-2 S) and were evaluated 35 days or later after the first dose of SARS-CoV-2 vaccine. RESULTS Vaccination willingness was high with a rate of 90 %. The most frequent reasons for rejection were: undecided/potential vaccination after therapy, distrust in the vaccine and fear of interaction with comorbidities. Factors associated with lower vaccination willingness were: worse general condition, lower age and female sex. 80 % of the participants had been previously vaccinated, 8 % reported previous infection and 16 % received vaccination during antineoplastic therapy. In 97.5 % of the vaccinated patients Anti-SARS-CoV-2 S was detected. In a univariable analysis parameters associated with non-conversion were: lower performance status, spread to the local lymphatics (N + ), hematologic disease and diffuse metastases. All patients with oligometastatic disease achieved positive Anti-SARS-CoV-2 S titres. For patients with two vaccinations several risk factors were identified, that were associated with low antibody concentrations. CONCLUSIONS SARS-CoV-2 vaccination willingness among oncologic patients was high in the first months after its availability, and most patients had already received one or two doses. Over 97 % of vaccinated patients had measurable anti-SARS-CoV-2 S titres. Our data supports early identification of low humoral responders after vaccination and could facilitate the design of future oncologic vaccine trials (clinicaltrials.gov Identifier: NCT04918888).
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Affiliation(s)
- Hans Geinitz
- Department of Radiation Oncology, Ordensklinikum Linz GmbH, Barmherzige Schwestern, Seilerstätte 4, 4010 Linz, Austria; Johannes Kepler Universität Linz, Medizinische Fakultät, Krankenhausstraße 5, A-4020 Linz, Austria.
| | - Elisabeth Silberberger
- Department of Radiation Oncology, Ordensklinikum Linz GmbH, Barmherzige Schwestern, Seilerstätte 4, 4010 Linz, Austria
| | - Kurt Spiegl
- Department of Radiation Oncology, Ordensklinikum Linz GmbH, Barmherzige Schwestern, Seilerstätte 4, 4010 Linz, Austria
| | - Johann Feichtinger
- Department of Radiation Oncology, Ordensklinikum Linz GmbH, Barmherzige Schwestern, Seilerstätte 4, 4010 Linz, Austria
| | - Helga Wagner
- Kompetenzzentrum für Klinische Studien (KKS Linz) am Zentrum für Klinische Forschung (ZKF), Johannes Kepler Universität Linz, Medizinische Fakultät, Med Campus I, Gebäude ADM, 8.OG, Krankenhausstraße 5, A-4020 Linz, Austria
| | - Philipp Hermann
- Kompetenzzentrum für Klinische Studien (KKS Linz) am Zentrum für Klinische Forschung (ZKF), Johannes Kepler Universität Linz, Medizinische Fakultät, Med Campus I, Gebäude ADM, 8.OG, Krankenhausstraße 5, A-4020 Linz, Austria
| | - Elisabeth Bräutigam
- Department of Radiation Oncology, Ordensklinikum Linz GmbH, Barmherzige Schwestern, Seilerstätte 4, 4010 Linz, Austria
| | - Christine Track
- Department of Radiation Oncology, Ordensklinikum Linz GmbH, Barmherzige Schwestern, Seilerstätte 4, 4010 Linz, Austria
| | - Eva Maria Weis
- Department of Radiation Oncology, Ordensklinikum Linz GmbH, Barmherzige Schwestern, Seilerstätte 4, 4010 Linz, Austria
| | - Clemens Venhoda
- Department of Radiation Oncology, Ordensklinikum Linz GmbH, Barmherzige Schwestern, Seilerstätte 4, 4010 Linz, Austria
| | - Roswitha Huppert
- Department of Radiation Oncology, Ordensklinikum Linz GmbH, Barmherzige Schwestern, Seilerstätte 4, 4010 Linz, Austria
| | - Barbara Spindelbalker-Renner
- Department of Radiation Oncology, Ordensklinikum Linz GmbH, Barmherzige Schwestern, Seilerstätte 4, 4010 Linz, Austria
| | - Georgine Zauner-Babor
- Department of Radiation Oncology, Ordensklinikum Linz GmbH, Barmherzige Schwestern, Seilerstätte 4, 4010 Linz, Austria
| | - Dalma Viktoria Nyiri
- Department of Radiation Oncology, Ordensklinikum Linz GmbH, Barmherzige Schwestern, Seilerstätte 4, 4010 Linz, Austria
| | - Nicola Karasek
- Department of Radiation Oncology, Ordensklinikum Linz GmbH, Barmherzige Schwestern, Seilerstätte 4, 4010 Linz, Austria
| | - Mercedesz Erdei
- Department of Radiation Oncology, Ordensklinikum Linz GmbH, Barmherzige Schwestern, Seilerstätte 4, 4010 Linz, Austria
| | - Ruben Gheju
- Department of Radiation Oncology, Ordensklinikum Linz GmbH, Barmherzige Schwestern, Seilerstätte 4, 4010 Linz, Austria
| | - Georg Gruber
- Department of Radiation Oncology, Ordensklinikum Linz GmbH, Barmherzige Schwestern, Seilerstätte 4, 4010 Linz, Austria
| | - Margot Egger
- Department of Laboratory Medicine, Konventhospital Barmherzige Brueder Linz and Ordensklinikum Linz, Linz, Austria
| | - Benjamin Dieplinger
- Department of Laboratory Medicine, Konventhospital Barmherzige Brueder Linz and Ordensklinikum Linz, Linz, Austria
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Mortazavi SMJ, Rafiepour P, Mortazavi SAR, Razavi Toosi SMT, Shomal PR, Sihver L. Radium deposition in human brain tissue: A Geant4-DNA Monte Carlo toolkit study. Z Med Phys 2024; 34:166-174. [PMID: 38420703 PMCID: PMC10919964 DOI: 10.1016/j.zemedi.2023.09.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 09/09/2023] [Accepted: 09/28/2023] [Indexed: 03/02/2024]
Abstract
NASA has encouraged studies on 226Ra deposition in the human brain to investigate the effects of exposure to alpha particles with high linear energy transfer, which could mimic some of the exposure astronauts face during space travel. However, this approach was criticized, noting that radium is a bone-seeker and accumulates in the skull, which means that the radiation dose from alpha particles emitted by 226Ra would be heavily concentrated in areas close to cranial bones rather than uniformly distributed throughout the brain. In the high background radiation areas of Ramsar, Iran, extremely high levels of 226Ra in soil contribute to a large proportion of the inhabitants' radiation exposure. A prospective study on Ramsar residents with a calcium-rich diet was conducted to improve the dose uniformity due to 226Ra throughout the cerebral and cerebellar parenchyma. The study found that exposure of the human brain to alpha particles did not significantly affect working memory but was significantly associated with increased reaction times. This finding is crucial because astronauts on deep space missions may face similar cognitive impairments due to exposure to high charge and energy particles. The current study was aimed to evaluate the validity of the terrestrial model using the Geant4 Monte Carlo toolkit to simulate the interactions of alpha particles and representative cosmic ray particles, acknowledging that these radiation types are only a subset of the complete space radiation environment.
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Affiliation(s)
- S M J Mortazavi
- Ionizing and Non-Ionizing Radiation Protection Research Center (INIRPRC), Shiraz University of Medical Sciences, Shiraz, Iran
| | - Payman Rafiepour
- Department of Nuclear Engineering, School of Mechanical Engineering, Shiraz University, Shiraz, Iran
| | - S A R Mortazavi
- MVLS College, The University of Glasgow, Glasgow Scotland, UK
| | - S M T Razavi Toosi
- Physiology Department, School of Medicine, Guilan University of Medical Sciences, Guilan, Iran
| | - Parya Roshan Shomal
- Physiology Department, School of Medicine, Guilan University of Medical Sciences, Guilan, Iran
| | - Lembit Sihver
- Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Prague, Czechia; Technische Universität Wien, Atominstitut, Vienna, Austria.
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Katubi KM, Alsulami RA, Albarqi MM, Alrowaili ZA, Kebaili I, Singh VP, Al-Buriahi MS. Radiation Shielding efficiency of lead-tungsten-boron glasses with Sb, Al, and Bi against gamma, neutron and charge particles. Appl Radiat Isot 2024; 204:111139. [PMID: 38104471 DOI: 10.1016/j.apradiso.2023.111139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Revised: 12/01/2023] [Accepted: 12/02/2023] [Indexed: 12/19/2023]
Abstract
We report on newly developed nuclear shielding glass system based on lead-tungsten-boron (PWB) for radiation applications against photon, neutron and charge particles. This newly developed system contains also different additions, in low concentrations, such as Sb, Al and Bi. The gamma/photon shielding performance was tested by using FLUKA Monte Carlo. Moreover, the shielding efficiency of the present system is examined against charged particles (light and heavy ones) and neutrons. The highest gamma/photons attenuation is observed in the lowest incident energy and this is at the region of the photoelectric absorption. We also observe that the values of effective atomic number (Zeff) show a peak at 100 keV incident energy. The reduction of these values is higher for photon energy range 0.1-1 MeV than below 80 keV energies. The lowest half value layer (d1/2), reflecting the best shielding efficiency, is recorded for the PWB-Bi system. The PWB-Bi system demonstrates promising performance better than many of commercial and standard systems and heavy concretes.
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Affiliation(s)
- Khadijah Mohammedsaleh Katubi
- Department of Chemistry, College of Science, Princess Nourah bint Abdulrahman University, P .O. Box 84428, Riyadh, 11671, Saudi Arabia
| | - Raed A Alsulami
- Nuclear Technologies Institute (NTI), King Abdulaziz City for Science & Technology (KACST), P.O. Box 6086, Riyadh, 11442, Saudi Arabia
| | - Mubarak M Albarqi
- Nuclear Technologies Institute (NTI), King Abdulaziz City for Science & Technology (KACST), P.O. Box 6086, Riyadh, 11442, Saudi Arabia
| | - Z A Alrowaili
- Department of Physics, College of Science, Jouf University, P.O.Box:2014, Sakaka, Saudi Arabia
| | - Imen Kebaili
- Department of Physics, Faculty of Science, King Khalid University, P.O. Box 9004, Abha, Saudi Arabia
| | - V P Singh
- Department of Physics, Karnatak University, Dharwad, 580003, India
| | - M S Al-Buriahi
- Department of Physics, Sakarya University, Sakarya, Turkey
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McKenna DP, McMonagle MP. Plain film of the abdomen remains a low sensitivity test in A&E. Ir J Med Sci 2024; 193:341-343. [PMID: 37340226 PMCID: PMC10808235 DOI: 10.1007/s11845-023-03427-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Accepted: 06/07/2023] [Indexed: 06/22/2023]
Abstract
BACKGROUND Plain film abdomens (PFA) are frequently used in the emergency department to help guide the management of patients presenting with abdominal symptoms. A plain film abdomen contributes minimally to clinical scenarios due to low sensitivity and specificity. Is a PFA useful in the emergency setting or does it serve to further complicate decision making? AIM We hypothesise that PFAs in the emergency department are over utilised to falsely reassure clinicians and patients alike. METHODS A search of the National Integrated Medical Imaging System (NIMIS) database in an Irish tertiary referral hospital was conducted. All plain film abdominal radiographs requested by the emergency department between 01/01/2022 and 31/08/2022 were identified. Requests where there was suspicion of foreign body were excluded. A retrospective search of the NIMIS database identified subjects who underwent subsequent imaging. RESULTS A total of 619 abdominal films were deemed suitable for inclusion. These comprised of 338 male and 282 female subjects. Subjects had an average age of 64 years. Fifty-seven per cent of PFAs detected no abnormality. Forty-two per cent of subjects had subsequent imaging. The plain film findings correlated with further imaging in only 15% of cases. One case of ruptured aortic aneurysm and 11 perforations were detected on computerised tomography, none of these cases were evident on abdominal X-ray. CONCLUSION Plain film abdomen requests are over utilised in the emergency department. PFAs are not sensitive for detecting acute pathology and should not be used to decide if a patient requires further imaging or a full clinical assessment.
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Affiliation(s)
- Daniel P McKenna
- Department of Surgery, University Hospital Waterford, Dunmore Road, Waterford, X91 ER8E, UK.
| | - Morgan P McMonagle
- Department of Surgery, University Hospital Waterford, Dunmore Road, Waterford, X91 ER8E, UK
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49
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Dai Y, Yu Y, Nie J, Gu K, Pei H. X-ray-downregulated nucleophosmin induces abnormal polarization by anchoring to G-actin. Life Sci Space Res (Amst) 2024; 40:81-88. [PMID: 38245352 DOI: 10.1016/j.lssr.2023.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 09/02/2023] [Accepted: 09/04/2023] [Indexed: 01/22/2024]
Abstract
Ionizing radiation poses significant risks to astronauts during deep space exploration. This study investigates the impact of radiation on nucleophosmin (NPM), a protein involved in DNA repair, cell cycle regulation, and proliferation. Using X-rays, a common space radiation, we found that radiation suppresses NPM expression. Knockdown of NPM increases DNA damage after irradiation, disrupts cell cycle distribution and enhances cellular radiosensitivity. Additionally, NPM interacts with globular actin (G-actin), affecting its translocation and centrosome binding during mitosis. These findings provide insights into the role of NPM in cellular processes in responding to radiation. This article enhances our comprehension of radiation-induced genomic instability and provides a foundational platform for prospective investigations within the realm of space radiation and its implications for cancer therapy.
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Affiliation(s)
- Yingchu Dai
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Suzhou Medical College of Soochow University, Suzhou, 215123, China.
| | - Yongduo Yu
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Suzhou Medical College of Soochow University, Suzhou, 215123, China
| | - Jing Nie
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Suzhou Medical College of Soochow University, Suzhou, 215123, China; Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou, 215123, China
| | - Ke Gu
- Department of Radiotherapy and Oncology, The Affiliated Hospital of Jiangnan University, Wuxi, Jiangsu, China
| | - Hailong Pei
- State Key Laboratory of Radiation Medicine and Protection, School of Radiation Medicine and Protection, Suzhou Medical College of Soochow University, Suzhou, 215123, China; Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou, 215123, China.
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50
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Vijayakumar G, Tang A, Vance D, Yoon RS, Sweeney K, Blank AT. Does Perioperative Radiation Affect Implant Survivorship of Primary Total Hip Arthroplasty in the Setting of Metastatic Bone Disease? Arthroplast Today 2024; 25:101296. [PMID: 38292148 PMCID: PMC10826139 DOI: 10.1016/j.artd.2023.101296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 09/30/2023] [Accepted: 11/05/2023] [Indexed: 02/01/2024] Open
Abstract
Background Metastatic bone disease (MBD) commonly affects the hip and surgical intervention including total hip arthroplasty (THA) is often indicated to treat the joint and improve function. Patients with metastatic cancer often receive radiotherapy, and orthopaedic oncologists must consider surgical risks with operating on irradiated bone and soft tissue. We evaluated surgical outcomes and implant survival (IS) of titanium acetabular components and femoral components in patients treated for MBD in the setting of perioperative radiation. Methods This was a retrospective review of patients who underwent THA for MBD at 3 institutions between 2017 and 2021. Outcomes included rates of reoperation, complications, IS, and overall survival. Results Forty-six patients who received primary THA for MBD were included in the study. Twenty patients (43.5%) received perioperative radiation for MBD. Six postoperative complications including one superficial wound infection, 2 dislocations, 2 pathologic fractures, and one aseptic acetabular component loosening led to 5 reoperations. There were no significant differences in postoperative outcomes, reoperation after THA, and IS based on radiotherapy status. Conclusions To our knowledge, this is the first paper evaluating primary THA outcomes and IS between patients who receive perioperative radiation for MBD to the hip and those who do not. As surgical management is a crucial part of the treatment in alleviating pain and disability in patients with MBD, we continue to recommend THA for patients who received radiation at the operative site.
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Affiliation(s)
- Gayathri Vijayakumar
- Department of Orthopedic Surgery, Section of Orthopedic Oncology, Rush University Medical Center, Chicago, IL, USA
| | - Alex Tang
- Divison of Orthopaedic Trauma & Adult Reconstruction, Department of Orthopaedic Surgery, Cooperman Barnabas Medical Center/Jersey City Medical Center - RWJBarnabas Health, Livingston, Jersey City, NJ, USA
| | - Dylan Vance
- Department of Orthopedic Surgery, University of Kansas Medical Center, Kansas City, KS, USA
| | - Richard S. Yoon
- Divison of Orthopaedic Trauma & Adult Reconstruction, Department of Orthopaedic Surgery, Cooperman Barnabas Medical Center/Jersey City Medical Center - RWJBarnabas Health, Livingston, Jersey City, NJ, USA
| | - Kyle Sweeney
- Department of Orthopedic Surgery, University of Kansas Medical Center, Kansas City, KS, USA
| | - Alan T. Blank
- Department of Orthopedic Surgery, Section of Orthopedic Oncology, Rush University Medical Center, Chicago, IL, USA
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