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Evolving role of biomaterials in diagnostic and therapeutic radiation oncology.

Radiation therapy to treat cancer has evolved significantly since the discovery of x-rays. Yet, radiation therapy still has room for improvement in reducing side effects and improving control of cancer. Safer and more effective delivery of radiation has led us to novel techniques and use of biomaterials. Biomaterials in combination with radiation and chemotherapy have started to appear in pre-clinical explorations and clinical applications, with many more on the horizon. Biomaterials have revolutionized the field of diagnostic imaging, and now are being cultivated into the field of theranostic

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… Alpha particles comparatively, are made of neutrons and protons, which make it difficult for them to penetrate tissue. Alpha particles are the least ionizing in terms of radiation in an environmental sense. … Additionally, radiation from light, neutrons, ultrasound and X-rays can be used to control drug delivery through biomaterials including liposomes and other nanoparticles [ 107 ]. …

Functionalized Folic Acid-Conjugated Amphiphilic Alternating Copolymer Actively Targets 3D Multicellular Tumour Spheroids and Delivers the Hydrophobic Drug to the Inner Core.

Engineering of a "smart" drug delivery system to specifically target tumour cells has been at the forefront of cancer research, having been engineered for safer, more efficient and effective use of chemotherapy for the treatment of cancer. However, selective targeting and choosing the right cancer surface biomarker are critical for a targeted treatment to work. Currently, the available delivery systems use a two-dimensional monolayer of cancer cells to test the efficacy of the drug delivery system, but designing a "smart" drug delivery system to be specific for a tumour in vivo and to penetrat

The Eighth Liquid Matter Conference.

The Eighth Liquid Matter Conference (LMC8) was held at the Universität Wien from 6-10 September 2011. Initiated in 1990, the conferences of this series cover a broad range of highly interdisciplinary topics, ranging from simple liquids to soft matter and biophysical systems. The vast spectrum of scientific subjects presented and discussed at the LMC8 is reflected in the themes of the ten symposia: Ionic and quantum liquids, liquid metals Water, solutions and reaction dynamics Liquid crystals Polymers, polyelectrolytes, biopolymers Colloids Films, foams, surfactants, emulsions, aerosols Confine

The Role of the CREB Protein Family Members and the Related Transcription Factors in Radioresistance Mechanisms.

In the framework of space flight, the risk of radiation carcinogenesis is considered a "red" risk due to the high likelihood of occurrence as well as the high potential impact on the quality of life in terms of disease-free survival after space missions. The cyclic AMP response element-binding protein (CREB) is overexpressed both in haematological malignancies and solid tumours and its expression and function are modulated following irradiation. The CREB protein is a transcription factor and member of the CREB/activating transcription factor (ATF) family. As such, it has an essential role in a

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… The exposure to GCR in the form of high-energy (HZE) ions, secondary protons, and neutrons has high linear energy transfer values that evoke complex DNA and other cellular damage [ 2 ]. … Ionising Radiation: Radioresistance and Radiosensitivity When atoms disintegrate, energy is released in the form of ionising radiation, which includes electromagnetic waves (e.g., gamma rays, X-rays) and particles (neutrons, alpha and beta particles). …

Essential and toxic metal concentrations in biological samples of multiple sclerosis patients: A systematic review and meta-analysis.

The role of trace elements and toxic metals on human health has been extensively discussed concerning disease pathogenesis and risk factors of diseases. In this systematic review and meta-analysis, we aimed to investigate arsenic (As), cadmium (Cd), lead (Pb), iron (Fe), zinc (Zn), and magnesium (Mg) levels in individuals with multiple sclerosis (MS) and healthy controls. We searched different databases/search engines for this systematic review and meta-analysis, including Web of Science, PubMed, Scopus, and Google Scholar, until June 27, 2024. Out of 5466 studies identified, 65 met our eligib

Renaissance of Traditional Mineral Drugs in Cancer: Advanced Delivery Strategies and Bioengineering Approaches.

Traditional mineral drugs represent an underexploited reservoir of natural antitumor agents; however, their clinical translation has historically been hindered by poor bioavailability, non-specific biodistribution, and dose-limiting toxicity. This review comprehensively examines the pharmacological mechanisms and modern formulation strategies driving the renaissance of mineral-based oncology therapeutics. We highlight how mineral drugs exert potent anticancer effects through interconnected pathways, including regulated cell death (e.g., apoptosis, ferroptosis), cell-cycle arrest, and immunomod

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… A representative example is boron neutron capture therapy, which exploits nuclear reactions between boron-10 and thermal neutrons to generate high-energy particles with extremely short path lengths, thereby inducing localized damage to DNA and mitochondria and enabling highly selective tumor cell killing …

Rare Diseases of the Nose, the Paranasal Sinuses, and the Anterior Skull Base.

Due to their low incidence and thus resulting limited diagnostic criteria as well as therapeutic options, rare diseases of the nose, the paranasal sinuses, and the anterior skull base are a significant challenge. The value as of which a disease has to be considered as rare amounts to a maximum of 5 patients per 10 000 people. Within these diseases, however, there are extreme differences. Some rare or orphan diseases like for example the inverted papilloma belong to regularly diagnosed and treated diseases of larger departments of oto-rhino-laryngology whereas other rare diseases and malformati

Radioprotectors & mitigators in radiation therapy: Harnessing diverse pathways for optimizing clinical outcomes.

Radioprotectors are agents that protect normal tissues from the harmful effects of radiation during cancer treatment. Combining these protective agents with advanced radiotherapy techniques such as stereotactic body radiotherapy (SBRT) and proton therapy offers a promising strategy to enhance therapeutic efficacy while minimizing normal tissue toxicity. However, despite extensive research and the identification of numerous potential radioprotectors, only a few have made it into clinical practice. It is primarily because the transition from laboratory research to clinical application faces sign

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… Ionizing radiation (X, α, β, γ rays, neutrons, heavy ions) generates lipid peroxides, ceramides, and ROS, damaging DNA, membranes, and mitochondria, leading to cytochrome C-mediated apoptosis. Growth stimulating hormones (GSH) and antioxidants detoxify ROS. … cells | DMF: Not known | 51 Radiation Mitigators Captopril | Mice, Göttingen minipigs, rats, cell lines, in vitro | Oral ( e.g. , 0.96 mg/kg twice daily for 12 days in minipigs); high-dose for 30 days in mice; various in vitro doses | Total body irradiation ( e.g. , 60Co, 1.79 Gy/min), X-ray, fast neutrons …

Cell-based immunotherapy of glioblastoma multiforme.

Glioblastoma multiforme (GBM) is the most aggressive and lethal primary glial brain tumor. It has an unfavorable prognosis and relatively ineffective treatment protocols, with the median survival of patients being ~15 months. Tumor resistance to treatment is associated with its cancer stem cells (CSCs). At present, there is no medication or technologies that have the ability to completely eradicate CSCs, and immunotherapy (IT) is only able to prolong the patient's life. The present review aimed to investigate systemic solutions for issues associated with immunosuppression, such as ineffective

Коррозионное поведение Incoloy_800H, Hasteloy ¶G35> и 316L бесшовной стали в смеси фтористых молотков FLINAK и ее паров

Данная статья рассматривает результаты эксперимента по коррозии, который исследует переходную зону между нижней и верхней областями образца. В этом эксперименте нижняя половина поверхности образца подвергается воздействию расплавленной соли, а верхняя половина поверхности образца подвергается воздействию паров, генерируемых расплавленной солью FLiNak. Для коррозионного эксперимента были выбраны сплавы Incoloy®800H и Hastelloy®G35® и нержавеющая сталь 316L на основе их содержания хрома. Эксперимент был проведен при температуре 600 °C в течение 100 часов. Результаты эксперимента показывают, что

India's Growing Nuclear Medicine Infrastructure and Emergence of Radiotheranostics in Cancer Care: Associated Challenges and the Opportunities to Collaborate.

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Learn from antibody-drug conjugates: consideration in the future construction of peptide-drug conjugates for cancer therapy.

Cancer is one of the leading causes of death worldwide due to high heterogeneity. Although chemotherapy remains the mainstay of cancer therapy, non-selective toxicity and drug resistance of mono-chemotherapy incur broad criticisms. Subsequently, various combination strategies have been developed to improve clinical efficacy, also known as cocktail therapy. However, conventional "cocktail administration" is just passable, due to the potential toxicities to normal tissues and unsatisfactory synergistic effects, especially for the combined drugs with different pharmacokinetic properties. The drug

Targeted Alpha Therapy: Progress in Radionuclide Production, Radiochemistry, and Applications.

This review outlines the accomplishments and potential developments of targeted alpha (α) particle therapy (TAT). It discusses the therapeutic advantages of the short and highly ionizing path of α-particle emissions; the ability of TAT to complement and provide superior efficacy over existing forms of radiotherapy; the physical decay properties and radiochemistry of common α-emitters, including 225Ac, 213Bi, 224Ra, 212Pb, 227Th, 223Ra, 211At, and 149Tb; the production techniques and proper handling of α-emitters in a radiopharmacy; recent preclinical developments; ongoing and completed clinica

Overcoming temozolomide resistance in glioma: recent advances and mechanistic insights.

Temozolomide (TMZ) remains the cornerstone chemotherapy for glioma, yet intrinsic and acquired resistance mechanisms significantly limit its clinical effectiveness. This review summarizes the multifaceted molecular pathways contributing to TMZ resistance, including enhanced DNA repair mechanisms such as O6-methylguanine-DNA methyltransferase (MGMT), mismatch repair (MMR), and base excision repair (BER). Additional resistance factors include genetic mutations that affect the drug response, dysregulated non-coding RNAs (miRNAs, lncRNAs, and circRNAs), glioma stem cells (GSCs), cytoprotective aut

'Nelfinavir sensitizes a clinically relevant chemo-radioresistant cervical cancer in-vitro model by targeting the AKT-USP15/USP11-HPV16 E6/E7 axis.

Resistance to standard therapies is a major challenge in managing cervical cancer, often leading to systemic relapse. This study aimed to develop an in-vitro model of chemo-radioresistant cervical cancer that mimics clinical conditions and also explore the therapeutic potential of the repurposed drug nelfinavir, an HIV protease inhibitor. HPV16-positive SiHa cervical cancer cells were subjected to concurrent cisplatin and ionizing radiation, to simulate the clinical treatment regimen for locally advanced cervical cancer. The resulting chemo-radioresistant subline exhibited increased IC50-value

Samarium-153-ethylene diamine tetramethylene phosphonate, a beta-emitting bone-targeted radiopharmaceutical, useful for patients with osteoblastic bone metastases.

Bone metastases are prevalent among cancer patients and frequently cause significant morbidity. Oncology providers must mitigate complications associated with bone metastases while limiting therapy-related adverse effects and their impact on quality of life. Multiple treatment modalities, including chemotherapy, surgery, external beam radiation therapy, and radioisotopes, among others, have been recommended and utilized for palliative treatment of bone metastases. Radioisotopes such as samarium-153 are commonly used in the setting of multifocal bone metastases due to their systemic distributio

Модификация РНК не позволяет расширить кодон-антикодонное взаимодействие облегчить +1 Смена рамы.

Закон о внесении изменений после записи в РНК путем стабилизации функционального соответствия РНК. Хотя их роль в декодировании генератора РНК (mRNA) хорошо установлена, менее ясно, как перенос изменений РНК (tRNA) за пределы антикодона способствует стабильности tRNA и точному синтезу белка. Отсутствие таких изменений приводит к ошибкам в переводе, в том числе к смене mRNA. Интегрировав передачу энергии одним молекулярного флуоресцентного резонанса и криогенную электронную микроскопию, мы продемонстрируем, что N1-methylguanosine (м1G) модификация в положении 37 Эшеричиа коли tRNAProL необходим

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… Liebschner D Macromolecular structure determination using X-rays, neutrons and electrons: recent developments in Phenix Acta Crystallogr. D. Struct. Biol. 2019 75 861 877 31588918 10.1107/S2059798319011471 PMC6778852 Liebschner, D. et al. … Macromolecular structure determination using X-rays, neutrons and electrons: recent developments in Phenix. Acta Crystallogr. D. Struct. Biol. 75 , 861–877 (2019). 31588918 10.1107/S2059798319011471 PMC6778852 88. …

Advances in Radionuclides and Radiolabelled Peptides for Cancer Therapeutics.

Radiopharmaceutical therapy, which can detect and treat tumours simultaneously, was introduced more than 80 years ago, and it has changed medical strategies with respect to cancer. Many radioactive radionuclides have been developed, and functional, molecularly modified radiolabelled peptides have been used to produce biomolecules and therapeutics that are vastly utilised in the field of radio medicine. Since the 1990s, they have smoothly transitioned into clinical application, and as of today, a wide variety of radiolabelled radionuclide derivatives have been examined and evaluated in various

Trying to Solve the Puzzle of the Interaction of Ascorbic Acid and Iron: Redox, Chelation and Therapeutic Implications.

Iron and ascorbic acid (vitamin C) are essential nutrients for the normal growth and development of humans, and their deficiency can result in serious diseases. Their interaction is of nutritional, physiological, pharmacological and toxicological interest, with major implications in health and disease. Millions of people are using pharmaceutical and nutraceutical preparations of these two nutrients, including ferrous ascorbate for the treatment of iron deficiency anaemia and ascorbate combination with deferoxamine for increasing iron excretion in iron overload. The main function and use of vit

15th Report on Carcinogens.

BACKGROUND: The Report on Carcinogens (RoC) is a congressionally mandated, science-based public health document that the National Toxicology … ; Mineral Oils: Untreated and Mildly Treated; Mirex; Mustard Gas. N: Naphthalene; 2-Naphthylamine; Neutrons (see Ionizing Radiation); Nickel Compounds (see Nickel Compounds and Metallic Nickel); Nickel, Metallic (see Nickel Compounds and Metallic Nickel); Nitrilotriacetic Acid; o-Nitroanisole; Nitrobenzene; 6-Nitrochrysene (see Nitroarenes [Selected]); Ni …