IONIZING RADIATION AND RADIOBIOLOGICAL EFFECTS IN THE HUMAN BODY DOI Open Access
Patrycja Zuziak, Agnieszka Bielaska,

Aleksandra Mikołajczak

et al.

Postępy Biologii Komórki, Journal Year: 2022, Volume and Issue: 49(3), P. 207 - 218

Published: Jan. 1, 2022

Modern medicine cannot exist without diagnostic and therapeutic methods that are based on ionizing radiation. Therefore it is necessary to understand interactions between this form of energy living matter make a full use progress in radiobiology. Ionizing radiation widely used for relatively long time, how known, disproportionately huge doses particularly harmful organisms including humans. However low useless modern medicine. Broadening knowledge radiobiology can be crucial healthcare professionals.

Language: Английский

Exploiting the unique interaction characteristics of fast neutrons for improved cancer therapy: A radiobiological perspective DOI Creative Commons
Festo Kiragga,

Konstantin Brazovskiy

Radiation Medicine and Protection, Journal Year: 2024, Volume and Issue: 5(1), P. 24 - 29

Published: Jan. 1, 2024

Fast neutrons have sufficient energy to liberate recoil protons, alpha particles, and other products when they interact with the nuclei of target material through scattering absorption processes. Physical interactions biological tissues occur mainly hydrogen as protons in tissues, create dense ionization chains along their tracks thus depositing energy. neutron therapy was pioneered by Robert Stone 1938 a few years after discovery neutron. Its main advantage is limited sensitivity hypoxia treatment slow-growing tumors hence better local control. This where photon has yet much success. Energy deposition fast living higher than conventional radiotherapy using mega voltage (MV) beams. gives relative effectiveness (RBE) dealing certain tumors. also linear transfer (LET) can reach deep-sited therapy. The challenge been extreme toxicity late-reacting tissues. Overall, holds potential for leveraging unique interaction characteristics review therefore intends bring this uniqueness light enhance understanding radiobiological properties advantages associated its

Language: Английский

Citations

1

Exploring Extravasation in Cancer Patients DOI Open Access
Tuan D. Pham, Taichiro Tsunoyama

Published: May 13, 2024

Extravasation, the unintended leakage of intravenously administered substances, poses significant challenges in cancer treatment, particularly during chemotherapy and radiotherapy. This comprehensive review explores pathophysiology, incidence, risk factors, clinical presentation, diagnosis, prevention strategies, management approaches, complications, long-term effects extravasation patients. It also outlines future directions research opportunities, including identifying gaps current knowledge proposing areas for further investigation management. Emerging technologies therapies with potential to improve both radiotherapy are highlighted. Such innovations include advanced vein visualization technologies, smart catheters, targeted drug delivery systems, novel topical treatments, artificial intelligence-based image analysis. By addressing these aspects, this not only provides healthcare professionals insights enhance patient safety optimize practice but underscores importance ongoing innovation improving outcomes patients experiencing events.

Language: Английский

Citations

1

Comparative effectiveness of kilo- and megavoltage energies in low-dose radiotherapy for painful degenerative musculoskeletal diseases: a systematic review and meta-analysis DOI Creative Commons
Aram Kim,

Jeanny Kwon,

JY Kim

et al.

Strahlentherapie und Onkologie, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 4, 2024

Abstract Purpose This study aimed to assess the impact of different energy levels on effectiveness low-dose radiotherapy (LDRT) for treating painful degenerative musculoskeletal diseases, as comparative efficacy data are currently lacking. Methods A systematic review was conducted in PubMed, Embase, and Cochrane Library databases identify studies with response information used (kilovoltage [kV] vs. megavoltage [MV]). The primary endpoint overall rate (ORR), secondary complete (CRR). Exploratory subgroup analyses included treatment site, period, design, country, dose per fraction. Results total 33 involving 12,143 patients were analyzed. Short-term follow-up (up 6 months) showed a pooled ORR 64% (95% CI 46–78%) kV 62% 54–70%) MV. Long-term (at least 12 revealed 85% 65–95%) 69% 62–75%) Subgroup analysis indicated no significant differences level stratified by site other factors. Regarding fraction (0.5 Gy 1.0 Gy), comparable ORRs demonstrated between two energies. No clinical side effects noted. Conclusion meta-analysis suggests that known LDRT disease may not depend used. Additional using standardized evaluation methods warranted establish consistency enhance comprehensiveness research. Further research is also needed explore modality selection considering disease-specific biology.

Language: Английский

Citations

1

Preliminary Study on Lutetium-177 and Gold Nanoparticles: Apoptosis and Radiation Enhancement in Hepatic Cancer Cell Line DOI Creative Commons
Maria Anthi Kouri,

A. P. Georgopoulos,

G. Manios

et al.

Current Issues in Molecular Biology, Journal Year: 2024, Volume and Issue: 46(11), P. 12244 - 12259

Published: Oct. 30, 2024

This study investigates a novel approach toward enhancing the efficacy of Lutetium-177 (Lu-177) radiopharmaceutical therapy by combining it with gold nanoparticles (AuNPs) in HepG2 hepatic cancer cell line. Lu-177, known for its effective β radiation, also emits gamma rays at energies (113 keV and 208 keV) near photoelectric absorption range, suggesting potential targeted localized radiation enhancement when used conjunction AuNPs. Thus, cells were treated two different activity levels (74 MBq 148 MBq), Lu-177 alone, combination AuNPs sizes (10 nm 50 nm), while some received no treatment. Treatment was assessed quantifying ratio (RER) apoptosis levels. The results reveal that significantly increases death compared to 10 demonstrating superior effectiveness. Additionally, varying influenced treatment outcomes, higher further augmenting therapeutic impact combined therapy. These findings underscore utilizing Lu-177's beta, but gamma, emissions, traditionally considered non-therapeutic, strategy leverages as an internal irradiator exploit advantage without requiring nanoparticle functionalization. provides promising improving radionuclide sets stage future research aimed optimizing treatments through use

Language: Английский

Citations

0

Protective Effect of Biochanin A on Gamma Radiation‐Induced Oxidative Stress, Antioxidant Status, Apoptotic, and DNA Repairing Molecules in Swiss Albino Mice DOI
Yang Yang,

Wei Yang,

Tianpeng Hu

et al.

Cell Biochemistry and Function, Journal Year: 2024, Volume and Issue: 42(8)

Published: Nov. 5, 2024

ABSTRACT Radiation therapy is indispensable in medical practice but often causes adverse effects on healthy tissues, necessitating the search for natural radioprotectors. This study investigates protective effect of Biochanin A (BCA) against gamma radiation‐induced oxidative stress and DNA damage Swiss albino mice. Gamma radiation, a potent ionizing source, generates reactive oxygen species (ROS) that cellular biomolecules, including DNA. Antioxidants play crucial role neutralizing ROS preventing damage. mice were divided into control, BCA control (10 mg/kg body weight), radiation alone (7 Gy), radiation+ pretreatment groups. BCA, isoflavone with known antioxidant cytoprotective properties, was administered intraperitoneally before exposure. After irradiation, lipid peroxidation levels, enzyme activities/level (superoxide dismutase, catalase, glutathione peroxidase reduced glutathione), expression levels repair genes (P53, P21, GADD45α), apoptotic markers (Bax, Bcl‐2, Caspase‐3, ‐9 Cytochrome‐C), inflammatory marker (NF‐κB) analyzed small intestine tissue. Our findings indicate significantly elevated altered activities, indicating stress. However, mitigated these by bolstering defences, reducing Additionally, markers, NF‐κB expression, promoting cell survival mechanisms. At molecular level, upregulated key repairing maintaining genomic stability. These results underscore potential as radioprotector, suggesting its efficacy mitigating preserving integrity. In conclusion, demonstrates promising radioprotective properties attenuating stress, enhancing modulating pathways, mechanisms following Further research necessary to elucidate precise action explore therapeutic applications oncology environmental radioprotection.

Language: Английский

Citations

0

Astatine-211 and Actinium-225: two promising nuclides in targeted alpha therapy DOI Creative Commons

Dashan Zuo,

Hui Wang, Boyi Yu

et al.

Acta Biochimica et Biophysica Sinica, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 1, 2024

Nuclear medicine therapy offers a promising approach for tumor treatment, as the energy emitted during radionuclide decay causes irreparable damage to cells. Notably, α-decay exhibits an even more significant destructive potential. By conjugating α-nuclides with antibodies or small-molecule inhibitors, targeted alpha (TAT) can enhance destruction while minimizing toxic side effects, making TAT increasingly attractive antineoplastic strategy. Astatine-211 (

Language: Английский

Citations

0

Iron Deposition in the Bone Marrow and Spleen of Nonhuman Primates with Acute Radiation Syndrome DOI Open Access
Regina M. Day,

W. Bradley Rittase,

John E. Slaven

et al.

Radiation Research, Journal Year: 2023, Volume and Issue: 200(6)

Published: Nov. 16, 2023

The risk of exposure to high levels ionizing radiation from nuclear weapons or radiological accidents is an increasing world concern. Partial- total-body doses potentially lethal through the induction acute syndrome (ARS). Hematopoietic cells are sensitive exposure; white blood primarily undergo apoptosis while red (RBCs) hemolysis. Several laboratories demonstrated that rapid hemolysis RBCs results in release acellular iron into blood. We recently using a murine model ARS after irradiation (TBI) and loss RBCs, accumulated bone marrow spleen, notably between 4-21 days postirradiation. Here, we investigated accumulation spleens TBI nonhuman primates (NHPs) histological stains. observed trends increased intracellular extracellular brown pigmentation various radiation, especially 4-15 postirradiation, but these differences did not reach significance. significant increase Prussian blue-staining deposition spleen 13-15 5.8-8.5 Gy TBI. 30-60 with varying NHP confirms our earlier findings model, showing

Language: Английский

Citations

1

A radioactive CRISPR interference system using 89Zr-labeled LbCas12a DOI Creative Commons
Injoo Hwang,

Jun Young Lee,

Tae Hyun Kim

et al.

Journal of Controlled Release, Journal Year: 2023, Volume and Issue: 365, P. 703 - 715

Published: Dec. 7, 2023

Recently, CRISPR proteins have been recognized as promising candidates for drug development. However, there is still a lack of substances with the appropriate sensitivity and stability targeted delivery systems. 89Zr radioactive isotope that emits positrons, allowing real-time in vivo tracking proven safety. In this study, we confirmed labeling did not compromise functionality during behavioral imaging. Furthermore, demonstrated therapeutic efficacy interference system mouse model liver fibrosis, highlighting theragnostic potential isotope-labeled proteins. The findings research could contribute to various aspects ongoing clinical studies exploring applications

Language: Английский

Citations

1

Sustainable Maintenance of Conductors in Transmission/Distribution Networks Using Complex Magnetic Field Analysis DOI Open Access
Livia-Andreea Dina,

Viorica Voicu,

Ionel Dumbravă

et al.

Sustainability, Journal Year: 2024, Volume and Issue: 16(15), P. 6659 - 6659

Published: Aug. 3, 2024

This study presents issues related to electromagnetic pollution and the level of magnetic field radiation occurring around conductors used for electricity transmission distribution. The fact that modeling simulation are most efficient methods optimization, considering cost–benefit ratio, was premise this work. paper proposes performance a complex analysis, carried out in comparative manner, which includes physical tests simulations existing distribution cables transformer substations. In first stage, near conductor by an electric current tested (measured), virtual model then designed simulate conditions similar those test. results obtained from were analyzed comparison with testing. maximum permissible limits exposure field, regulated Government Decision HG 520/2016 20 July 2016 Directive 2013/35/EU European Parliament Council 26 June 2013, as reference formulate conclusions both situations considered. These comparisons intended determine fields places where transmission/distribution located. Energy sustainability exists due versatile properties conductors, energy network being functional regardless source production.

Language: Английский

Citations

0

Exploring the Viability of Desiccant Silica Gel Beads as A Novel Material for Radiation Dosimetry: A Preliminary Investigation DOI

S.N. Mat Nawi,

Mayeen Uddin Khandaker, S.F. Abdul Sani

et al.

Radiation Physics and Chemistry, Journal Year: 2024, Volume and Issue: 225, P. 112144 - 112144

Published: Aug. 22, 2024

Language: Английский

Citations

0